From addbb0edd29c948ffebfc7f1636b975c0e39b6e7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sandro=20J=C3=A4ckel?= <sandro.jaeckel@gmail.com>
Date: Mon, 26 Aug 2024 00:09:02 +0200
Subject: [PATCH 001/107] python312Packages.llama-index-core: use nltk-data
 from nix package

This also doesn't fetch the tip of branch which is not reproducible
---
 .../llama-index-core/default.nix              | 20 ++++---------------
 1 file changed, 4 insertions(+), 16 deletions(-)

diff --git a/pkgs/development/python-modules/llama-index-core/default.nix b/pkgs/development/python-modules/llama-index-core/default.nix
index f6dab9b1f0fb..85ad5d57d8f6 100644
--- a/pkgs/development/python-modules/llama-index-core/default.nix
+++ b/pkgs/development/python-modules/llama-index-core/default.nix
@@ -6,13 +6,13 @@
   deprecated,
   dirtyjson,
   fetchFromGitHub,
-  fetchzip,
   fsspec,
   jsonpath-ng,
   llamaindex-py-client,
   nest-asyncio,
   networkx,
   nltk,
+  nltk-data,
   numpy,
   openai,
   pandas,
@@ -33,18 +33,6 @@
   typing-inspect,
 }:
 
-let
-  stopwords = fetchzip {
-    url = "https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/stopwords.zip";
-    hash = "sha256-tX1CMxSvFjr0nnLxbbycaX/IBnzHFxljMZceX5zElPY=";
-  };
-
-  punkt = fetchzip {
-    url = "https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/tokenizers/punkt.zip";
-    hash = "sha256-SKZu26K17qMUg7iCFZey0GTECUZ+sTTrF/pqeEgJCos=";
-  };
-in
-
 buildPythonPackage rec {
   pname = "llama-index-core";
   version = "0.10.60";
@@ -67,12 +55,12 @@ buildPythonPackage rec {
   # Setting `NLTK_DATA` to a writable path can also solve this problem, but it needs to be done in
   # every package that depends on `llama-index-core` for `pythonImportsCheck` not to fail, so this
   # solution seems more elegant.
-  patchPhase = ''
+  postPatch = ''
     mkdir -p llama_index/core/_static/nltk_cache/corpora/stopwords/
-    cp -r ${stopwords}/* llama_index/core/_static/nltk_cache/corpora/stopwords/
+    cp -r ${nltk-data.stopwords}/corpora/stopwords/* llama_index/core/_static/nltk_cache/corpora/stopwords/
 
     mkdir -p llama_index/core/_static/nltk_cache/tokenizers/punkt/
-    cp -r ${punkt}/* llama_index/core/_static/nltk_cache/tokenizers/punkt/
+    cp -r ${nltk-data.punkt}/tokenizers/punkt/* llama_index/core/_static/nltk_cache/tokenizers/punkt/
   '';
 
   build-system = [ poetry-core ];

From 83bd47a835f90e8488c7ef1234ae1d876789abcb Mon Sep 17 00:00:00 2001
From: Matthew Kenigsberg <matthew@floxdev.com>
Date: Tue, 10 Sep 2024 13:50:08 -0600
Subject: [PATCH 002/107] jupyter: respect JUPYTER_PATH

JUPYTER_PATH can be used to provide additional plugins for jupyter to
use. Currently, JUPYTER_PATH is being unconditionally overridden, so
extensions are not found, e.g:

```
$ JUPYTER_PATH="path to dir with labextensions/@jupyter-widgets" jupyter labextension list 2>&1 | grep widgets
```

Instead of setting JUPYTER_PATH, prepend to it, so JUPYTER_PATH will be
respected:

```
$ JUPYTER_PATH="path to dir with labextensions/@jupyter-widgets" jupyter labextension list 2>&1 | grep widgets
        @jupyter-widgets/jupyterlab-manager v5.0.13 enabled OK (python, jupyterlab_widgets)
```
---
 pkgs/applications/editors/jupyter/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/applications/editors/jupyter/default.nix b/pkgs/applications/editors/jupyter/default.nix
index 57122d173a44..08c33982364d 100644
--- a/pkgs/applications/editors/jupyter/default.nix
+++ b/pkgs/applications/editors/jupyter/default.nix
@@ -9,7 +9,7 @@ let
   jupyterPath = (jupyter-kernel.create { inherit definitions; });
   jupyter-notebook = (python3.buildEnv.override {
     extraLibs = [ python3.pkgs.notebook ];
-    makeWrapperArgs = ["--set JUPYTER_PATH ${jupyterPath}"];
+    makeWrapperArgs = ["--prefix JUPYTER_PATH : ${jupyterPath}"];
   }).overrideAttrs(oldAttrs: {
     meta = oldAttrs.meta // { mainProgram = "jupyter-notebook"; };
   });

From a43a90895abfdc780a3543b1c5e968f49566ead7 Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Fri, 13 Sep 2024 20:38:15 +0200
Subject: [PATCH 003/107] python312Packages.ml-dtypes: 0.4.0 -> 0.5.0

Diff:
https://github.com/jax-ml/ml_dtypes/compare/refs/tags/v0.4.0...v0.5.0

Changelog: https://github.com/jax-ml/ml_dtypes/releases/tag/v0.5.0
---
 .../python-modules/ml-dtypes/default.nix      | 34 +++++++++----------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/pkgs/development/python-modules/ml-dtypes/default.nix b/pkgs/development/python-modules/ml-dtypes/default.nix
index 0fd14edd7b21..b23ca450327c 100644
--- a/pkgs/development/python-modules/ml-dtypes/default.nix
+++ b/pkgs/development/python-modules/ml-dtypes/default.nix
@@ -1,26 +1,29 @@
 {
   lib,
   buildPythonPackage,
-  pythonOlder,
   fetchFromGitHub,
+
+  # build-system
   setuptools,
+
+  # dependencies
   numpy,
-  pytestCheckHook,
+
+  # tests
   absl-py,
+  pytestCheckHook,
 }:
 
 buildPythonPackage rec {
   pname = "ml-dtypes";
-  version = "0.4.0";
+  version = "0.5.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.9";
-
   src = fetchFromGitHub {
     owner = "jax-ml";
     repo = "ml_dtypes";
     rev = "refs/tags/v${version}";
-    hash = "sha256-3qZ1lS1IdSXNLRNE9tyuO9qauVBDlECZvmmwaOffD30=";
+    hash = "sha256-+6job9fEHVguh9JBE/NUv+QezwQohuKPO8DlhbaawZ4=";
     # Since this upstream patch (https://github.com/jax-ml/ml_dtypes/commit/1bfd097e794413b0d465fa34f2eff0f3828ff521),
     # the attempts to use the nixpkgs packaged eigen dependency have failed.
     # Hence, we rely on the bundled eigen library.
@@ -29,20 +32,17 @@ buildPythonPackage rec {
 
   postPatch = ''
     substituteInPlace pyproject.toml \
-      --replace "numpy~=1.21.2" "numpy" \
-      --replace "numpy~=1.23.3" "numpy" \
-      --replace "numpy~=1.26.0" "numpy" \
-      --replace "numpy==2.0.0rc1" "numpy" \
-      --replace "setuptools~=68.1.0" "setuptools"
+      --replace-fail "numpy~=2.0" "numpy" \
+      --replace-fail "setuptools~=73.0.1" "setuptools"
   '';
 
-  nativeBuildInputs = [ setuptools ];
+  build-system = [ setuptools ];
 
-  propagatedBuildInputs = [ numpy ];
+  dependencies = [ numpy ];
 
   nativeCheckInputs = [
-    pytestCheckHook
     absl-py
+    pytestCheckHook
   ];
 
   preCheck = ''
@@ -53,12 +53,12 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "ml_dtypes" ];
 
-  meta = with lib; {
+  meta = {
     description = "Stand-alone implementation of several NumPy dtype extensions used in machine learning libraries";
     homepage = "https://github.com/jax-ml/ml_dtypes";
     changelog = "https://github.com/jax-ml/ml_dtypes/releases/tag/v${version}";
-    license = licenses.asl20;
-    maintainers = with maintainers; [
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [
       GaetanLepage
       samuela
     ];

From 3c884af75c45b9099f51e42ef57326235733a272 Mon Sep 17 00:00:00 2001
From: OPNA2608 <opna2608@protonmail.com>
Date: Sat, 14 Sep 2024 15:46:40 +0200
Subject: [PATCH 004/107] vulkan-memory-allocator: Apply fix to allow
 specifying version constraints on CMake module

---
 pkgs/by-name/vu/vulkan-memory-allocator/package.nix | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/pkgs/by-name/vu/vulkan-memory-allocator/package.nix b/pkgs/by-name/vu/vulkan-memory-allocator/package.nix
index 4ed32516210f..41489f3b9458 100644
--- a/pkgs/by-name/vu/vulkan-memory-allocator/package.nix
+++ b/pkgs/by-name/vu/vulkan-memory-allocator/package.nix
@@ -1,6 +1,7 @@
 { lib
 , stdenvNoCC
 , fetchFromGitHub
+, fetchpatch
 , cmake
 }:
 
@@ -15,6 +16,16 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     hash = "sha256-j0Z9OEwQx3RB2cni9eK3gYfwkhOc2ST213b6VseaVzg=";
   };
 
+  patches = [
+    # Allows specifying version constraints on the CMake module
+    # Remove when version > 3.1.0
+    (fetchpatch {
+      name = "0001-vulkan-memory-allocator-add-cmake-package-version-file.patch";
+      url = "https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator/commit/257138b8f5686ae84491a3df9f90a77d5660c3bd.patch";
+      hash = "sha256-qbQhIJho/WQqzAwB2zzWgGKx4QK9zKmbaGisbNOV8mg=";
+    })
+  ];
+
   # A compiler is only required for the samples. This lets us use stdenvNoCC.
   postPatch = ''
     substituteInPlace CMakeLists.txt \

From be13e1b4043e79649cadfb58540fed3806c6506f Mon Sep 17 00:00:00 2001
From: Artturin <Artturin@artturin.com>
Date: Thu, 12 Sep 2024 07:58:28 +0300
Subject: [PATCH 005/107] expand-response-params: Fix windows build and add
 `mainProgram`

---
 pkgs/build-support/expand-response-params/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/build-support/expand-response-params/default.nix b/pkgs/build-support/expand-response-params/default.nix
index 6868ab97d896..83972f6ed97a 100644
--- a/pkgs/build-support/expand-response-params/default.nix
+++ b/pkgs/build-support/expand-response-params/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
   '';
   installPhase = ''
     mkdir -p $prefix/bin
-    mv expand-response-params $prefix/bin/
+    mv expand-response-params${stdenv.hostPlatform.extensions.executable} $prefix/bin/
   '';
 
   meta = {
@@ -38,5 +38,6 @@ stdenv.mkDerivation {
     '';
     license = lib.licenses.mit;
     platforms = lib.platforms.all;
+    mainProgram = "expand-response-params${stdenv.hostPlatform.extensions.executable}";
   };
 }

From 8dd43e731ef83b8a65b063c2b78aed224a5b312d Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Sun, 15 Sep 2024 21:35:37 +0200
Subject: [PATCH 006/107] veryl: init at 0.13.0

---
 pkgs/by-name/ve/veryl/package.nix | 70 +++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 pkgs/by-name/ve/veryl/package.nix

diff --git a/pkgs/by-name/ve/veryl/package.nix b/pkgs/by-name/ve/veryl/package.nix
new file mode 100644
index 000000000000..0702a9d11438
--- /dev/null
+++ b/pkgs/by-name/ve/veryl/package.nix
@@ -0,0 +1,70 @@
+{
+  lib,
+  rustPlatform,
+  fetchFromGitHub,
+  pkg-config,
+  dbus,
+  stdenv,
+  darwin,
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "veryl";
+  version = "0.13.0";
+
+  src = fetchFromGitHub {
+    owner = "veryl-lang";
+    repo = "veryl";
+    rev = "v${version}";
+    hash = "sha256-U4ikR2jRmHUwRycAL/t2XJtvHQniKu6skRKWn8XDIgM=";
+    fetchSubmodules = true;
+  };
+
+  cargoHash = "sha256-t2q3rbY84+0ayxt7a/TCD0exCm7KEs+8UbQjCtqZPoE=";
+
+  nativeBuildInputs = [
+    pkg-config
+  ];
+
+  buildInputs =
+    [
+      dbus
+    ]
+    ++ lib.optionals stdenv.isDarwin [
+      darwin.apple_sdk.frameworks.CoreFoundation
+      darwin.apple_sdk.frameworks.CoreServices
+      darwin.apple_sdk.frameworks.Security
+      darwin.apple_sdk.frameworks.SystemConfiguration
+    ];
+
+  checkFlags = [
+    # takes over an hour
+    "--skip=tests::progress"
+    # tempfile::tempdir().unwrap() -> "No such file or directory"
+    "--skip=tests::bump_version"
+    "--skip=tests::bump_version_with_commit"
+    "--skip=tests::check"
+    "--skip=tests::load"
+    "--skip=tests::lockfile"
+    "--skip=tests::publish"
+    "--skip=tests::publish_with_commit"
+    # "Permission Denied", while making its cache dir?
+    "--skip=analyzer::test_25_dependency"
+    "--skip=analyzer::test_68_std"
+    "--skip=emitter::test_25_dependency"
+    "--skip=emitter::test_68_std"
+
+  ];
+
+  meta = {
+    description = "Modern Hardware Description Language";
+    homepage = "https://veryl-lang.org/";
+    changelog = "https://github.com/veryl-lang/veryl/blob/${src.rev}/CHANGELOG.md";
+    license = with lib.licenses; [
+      mit
+      asl20
+    ];
+    maintainers = with lib.maintainers; [ pbsds ];
+    mainProgram = "veryl";
+  };
+}

From c998f87904b718a4be63400c6916f4e2c41e41ed Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Mon, 16 Sep 2024 22:19:14 +0200
Subject: [PATCH 007/107] octoscan: 0-unstable-2024-08-25 -> 0.1.0

Diff: https://github.com/synacktiv/octoscan/compare/refs/tags/v0-unstable-2024-08-25...v0.1.0
---
 pkgs/by-name/oc/octoscan/package.nix | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/pkgs/by-name/oc/octoscan/package.nix b/pkgs/by-name/oc/octoscan/package.nix
index c3a6e4d50b96..2844d3cedebb 100644
--- a/pkgs/by-name/oc/octoscan/package.nix
+++ b/pkgs/by-name/oc/octoscan/package.nix
@@ -6,14 +6,13 @@
 
 buildGoModule rec {
   pname = "octoscan";
-  version = "0-unstable-2024-08-25";
+  version = "0.1.0";
 
   src = fetchFromGitHub {
     owner = "synacktiv";
     repo = "octoscan";
-    # https://github.com/synacktiv/octoscan/issues/7
-    rev = "69f0761fe4d31f7fe4050fde5fd807364155fde4";
-    hash = "sha256-2aCjqjBDXqGbu94o22JRpJ5nUv8U46JGRcrBJCINflQ=";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-TUQz5/ktOUP7h9uDBUbluh5yM4Msqj6mJmUOexR765o=";
   };
 
   vendorHash = "sha256-9IT8qTFzn8otWGTBP7ODcT8iBckIJ/3+jkbF1dq6aDw=";

From 0436ec6bafaaf50c1233bb688b307f67e6281e9b Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Mon, 16 Sep 2024 22:20:49 +0200
Subject: [PATCH 008/107] octoscan: add changelog to meta

---
 pkgs/by-name/oc/octoscan/package.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/by-name/oc/octoscan/package.nix b/pkgs/by-name/oc/octoscan/package.nix
index 2844d3cedebb..01e7fd7d2777 100644
--- a/pkgs/by-name/oc/octoscan/package.nix
+++ b/pkgs/by-name/oc/octoscan/package.nix
@@ -25,6 +25,7 @@ buildGoModule rec {
   meta = {
     description = "Static vulnerability scanner for GitHub action workflows";
     homepage = "https://github.com/synacktiv/octoscan";
+    changelog = "https://github.com/synacktiv/octoscan/releases/tag/v${version}";
     license = lib.licenses.gpl3Only;
     maintainers = with lib.maintainers; [ fab ];
     mainProgram = "octoscan";

From 387b6266f1182247f123d3ea6060f878fb20b62f Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 17 Sep 2024 17:41:02 +0000
Subject: [PATCH 009/107] platformsh: 5.0.19 -> 5.0.20

---
 pkgs/by-name/pl/platformsh/versions.json | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/pkgs/by-name/pl/platformsh/versions.json b/pkgs/by-name/pl/platformsh/versions.json
index 9fcf18623798..5eda0b98d796 100644
--- a/pkgs/by-name/pl/platformsh/versions.json
+++ b/pkgs/by-name/pl/platformsh/versions.json
@@ -1,19 +1,19 @@
 {
-  "version": "5.0.19",
+  "version": "5.0.20",
   "darwin-amd64": {
-    "hash": "sha256-PGld4gvUnB5I++vPQjEFWp7XRowi4fRfLL6wSzdyaAY=",
-    "url": "https://github.com/platformsh/cli/releases/download/5.0.19/platform_5.0.19_darwin_all.tar.gz"
+    "hash": "sha256-KFkJDzfs5+CsxuHc5y/wEygzAGQDMyAYXOvlNqzSvUQ=",
+    "url": "https://github.com/platformsh/cli/releases/download/5.0.20/platform_5.0.20_darwin_all.tar.gz"
   },
   "darwin-arm64": {
-    "hash": "sha256-PGld4gvUnB5I++vPQjEFWp7XRowi4fRfLL6wSzdyaAY=",
-    "url": "https://github.com/platformsh/cli/releases/download/5.0.19/platform_5.0.19_darwin_all.tar.gz"
+    "hash": "sha256-KFkJDzfs5+CsxuHc5y/wEygzAGQDMyAYXOvlNqzSvUQ=",
+    "url": "https://github.com/platformsh/cli/releases/download/5.0.20/platform_5.0.20_darwin_all.tar.gz"
   },
   "linux-amd64": {
-    "hash": "sha256-UtyN/0UolohIVtrxGcKieHZfoRDJhjRApq+Mm44LjSo=",
-    "url": "https://github.com/platformsh/cli/releases/download/5.0.19/platform_5.0.19_linux_amd64.tar.gz"
+    "hash": "sha256-oPcy1yvAMTalr+FBynK0cq5Dgc1se/Tf1FZiwCqawIs=",
+    "url": "https://github.com/platformsh/cli/releases/download/5.0.20/platform_5.0.20_linux_amd64.tar.gz"
   },
   "linux-arm64": {
-    "hash": "sha256-upMEN/c3hxuFlocelC1hX/Nia02Jeg3+VWPsA48kjhs=",
-    "url": "https://github.com/platformsh/cli/releases/download/5.0.19/platform_5.0.19_linux_arm64.tar.gz"
+    "hash": "sha256-U2cM3b3MYHSOpgX6VO1mo90ClYDYy2g4QpiB6vkX6Uc=",
+    "url": "https://github.com/platformsh/cli/releases/download/5.0.20/platform_5.0.20_linux_arm64.tar.gz"
   }
 }

From 83954c7034aaa83a73030df48c7d61c09a218164 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Wed, 18 Sep 2024 14:38:15 +0000
Subject: [PATCH 010/107] protonmail-bridge: 3.12.0 -> 3.13.0

---
 pkgs/applications/networking/protonmail-bridge/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/applications/networking/protonmail-bridge/default.nix b/pkgs/applications/networking/protonmail-bridge/default.nix
index edb42aa79e9b..16c2bcf66cef 100644
--- a/pkgs/applications/networking/protonmail-bridge/default.nix
+++ b/pkgs/applications/networking/protonmail-bridge/default.nix
@@ -2,16 +2,16 @@
 
 buildGoModule rec {
   pname = "protonmail-bridge";
-  version = "3.12.0";
+  version = "3.13.0";
 
   src = fetchFromGitHub {
     owner = "ProtonMail";
     repo = "proton-bridge";
     rev = "v${version}";
-    hash = "sha256-3nEf9maHDd2LmRpgRqvFOub2DQNvjP3iEBRUlpvo8yg=";
+    hash = "sha256-rwESt2s/TCAFNkf+JwMa7sfYpRvMT8FoIii4EzR/Z6U=";
   };
 
-  vendorHash = "sha256-c8KNdENF0wRQ0Ssv6mgnZkY4BOcEoY7r80/hd7XJ5yo=";
+  vendorHash = "sha256-jmXh53KwzPvmu7RP1F1Ein9/EfJ5m/GGVAqjJVcEVsE=";
 
   nativeBuildInputs = [ pkg-config ];
 

From c488f494232da5a80bc2b2a7fff679e941af0aa7 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Wed, 18 Sep 2024 18:11:25 +0000
Subject: [PATCH 011/107] novelwriter: 2.5.1 -> 2.5.2

---
 pkgs/by-name/no/novelwriter/package.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/by-name/no/novelwriter/package.nix b/pkgs/by-name/no/novelwriter/package.nix
index 101783ee607d..9bf21b216aa0 100644
--- a/pkgs/by-name/no/novelwriter/package.nix
+++ b/pkgs/by-name/no/novelwriter/package.nix
@@ -7,7 +7,7 @@
   nix-update-script,
 }:
 let
-  version = "2.5.1";
+  version = "2.5.2";
 in
 python3.pkgs.buildPythonApplication {
   pname = "novelwriter";
@@ -18,7 +18,7 @@ python3.pkgs.buildPythonApplication {
     owner = "vkbo";
     repo = "novelWriter";
     rev = "v${version}";
-    hash = "sha256-DgeDAPE5IkZtzi+Xq2BpGfpgTRonzNjaa1NTcwnqdNo=";
+    hash = "sha256-xRSq6lBZ6jHtNve027uF2uNs3/40s0YdFN9F9O7m5VU=";
   };
 
   nativeBuildInputs = [ qt5.wrapQtAppsHook ];

From 94b8def8b108e66fef93a771e21cd5a6d8b4e202 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robert=20Sch=C3=BCtz?= <mail@dotlambda.de>
Date: Wed, 18 Sep 2024 14:26:39 -0700
Subject: [PATCH 012/107] esptool: 4.7.0 -> 4.8.0

Diff: https://github.com/espressif/esptool/compare/v4.7.0...v4.8.0

Changelog: https://github.com/espressif/esptool/blob/v4.8.0/CHANGELOG.md
---
 pkgs/tools/misc/esptool/default.nix | 32 ++++++++++++++++++-----------
 1 file changed, 20 insertions(+), 12 deletions(-)

diff --git a/pkgs/tools/misc/esptool/default.nix b/pkgs/tools/misc/esptool/default.nix
index 67eaacddaf6f..fa59cb10191d 100644
--- a/pkgs/tools/misc/esptool/default.nix
+++ b/pkgs/tools/misc/esptool/default.nix
@@ -1,30 +1,34 @@
 { lib
 , fetchFromGitHub
-, python3
+, python3Packages
 , softhsm
 }:
 
-python3.pkgs.buildPythonApplication rec {
+python3Packages.buildPythonApplication rec {
   pname = "esptool";
-  version = "4.7.0";
-
-  format = "setuptools";
+  version = "4.8.0";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "espressif";
     repo = "esptool";
-    rev = "v${version}";
-    hash = "sha256-yrEwCg0e+8jZorL6jcqeuKUCFoV0oP9HVFh1n/ezjPg=";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-BjoeJxtJ2cin6do82MCBjgAaTF0t7zy6JbzhBqnKAw8=";
   };
 
   postPatch = ''
     patchShebangs ci
 
     substituteInPlace test/test_espsecure_hsm.py \
-      --replace "/usr/lib/softhsm" "${lib.getLib softhsm}/lib/softhsm"
+      --replace-fail "/usr/lib/softhsm" "${lib.getLib softhsm}/lib/softhsm"
   '';
 
-  propagatedBuildInputs = with python3.pkgs; [
+  build-system = with python3Packages; [
+    setuptools
+  ];
+
+  dependencies = with python3Packages; [
+    argcomplete
     bitstring
     cryptography
     ecdsa
@@ -32,14 +36,17 @@ python3.pkgs.buildPythonApplication rec {
     pyserial
     reedsolo
     pyyaml
-    python-pkcs11
   ];
 
-  nativeCheckInputs = with python3.pkgs; [
+  optional-dependencies = with python3Packages; {
+    hsm = [ python-pkcs11 ];
+  };
+
+  nativeCheckInputs = with python3Packages; [
     pyelftools
     pytestCheckHook
     softhsm
-  ];
+  ] ++ lib.flatten (lib.attrValues optional-dependencies);
 
   # tests mentioned in `.github/workflows/test_esptool.yml`
   checkPhase = ''
@@ -60,6 +67,7 @@ python3.pkgs.buildPythonApplication rec {
   '';
 
   meta = with lib; {
+    changelog = "https://github.com/espressif/esptool/blob/${src.rev}/CHANGELOG.md";
     description = "ESP8266 and ESP32 serial bootloader utility";
     homepage = "https://github.com/espressif/esptool";
     license = licenses.gpl2Plus;

From 09fb2fef88f987f7e5a3972b80ecaae7d82d4c7b Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Thu, 19 Sep 2024 02:11:31 +0000
Subject: [PATCH 013/107] murex: 6.2.4000 -> 6.3.4225

---
 pkgs/shells/murex/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/shells/murex/default.nix b/pkgs/shells/murex/default.nix
index 871b07bc6e03..44c6c4f48c0d 100644
--- a/pkgs/shells/murex/default.nix
+++ b/pkgs/shells/murex/default.nix
@@ -5,16 +5,16 @@
 
 buildGoModule rec {
   pname = "murex";
-  version = "6.2.4000";
+  version = "6.3.4225";
 
   src = fetchFromGitHub {
     owner = "lmorg";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-CgbbbFFsY6zBwS4GeZk5DuHWibRIewvQ1CnvuvTFaSU=";
+    sha256 = "sha256-y+7tRp4JNlefsKnMgU9d3b9pzgBJbSKGI98CzkcOjq8=";
   };
 
-  vendorHash = "sha256-/qK7Zgdz48vmz+tIMZmo1M5Glr842fOCinMoLAeQasg=";
+  vendorHash = "sha256-NIhg8D8snCNxpb3i2JG5tLcZteYBCGN4QbOowG/vgJE=";
 
   subPackages = [ "." ];
 

From db4adb16e92ed3d95c77ccf67130187b948d3de8 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Thu, 19 Sep 2024 02:55:11 +0000
Subject: [PATCH 014/107] tunwg: 24.01.15+9f04d73 -> 24.09.18+760ee81

---
 pkgs/tools/networking/tunwg/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/tools/networking/tunwg/default.nix b/pkgs/tools/networking/tunwg/default.nix
index 1b36709baa48..ab43b9e5a419 100644
--- a/pkgs/tools/networking/tunwg/default.nix
+++ b/pkgs/tools/networking/tunwg/default.nix
@@ -5,16 +5,16 @@
 
 buildGoModule rec {
   pname = "tunwg";
-  version = "24.01.15+9f04d73";
+  version = "24.09.18+760ee81";
 
   src = fetchFromGitHub {
     owner = "ntnj";
     repo = "tunwg";
     rev = "v${version}";
-    hash = "sha256-M7iMl80uxw0hKg4sK8Tv6U5+nMOK8eTfb9SGn+U2+8E=";
+    hash = "sha256-+vgl7saHp1Co35nkxQ+IhqYr6GdGd0JIFEFrezQd5Yo=";
   };
 
-  vendorHash = "sha256-VlH41hOWC5QBCYZxiKCUZRmw2vHRbbPyzToRMU6kDO8=";
+  vendorHash = "sha256-5BJFAnsmx6lbGQTx/6dIdcsETsllCr6C3wPbB2Gvj5Y=";
 
   ldflags = [ "-s" "-w" ];
 

From de59208b3bf57015166f716023493b5d546955ac Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robert=20Sch=C3=BCtz?= <mail@dotlambda.de>
Date: Wed, 18 Sep 2024 20:29:29 -0700
Subject: [PATCH 015/107] python312Packages.shiboken2: use
 python.pkgs.distutils

---
 .../python-modules/shiboken2/default.nix      | 34 +++++--------------
 1 file changed, 9 insertions(+), 25 deletions(-)

diff --git a/pkgs/development/python-modules/shiboken2/default.nix b/pkgs/development/python-modules/shiboken2/default.nix
index e35ca8ff6f02..88f59fc86ebb 100644
--- a/pkgs/development/python-modules/shiboken2/default.nix
+++ b/pkgs/development/python-modules/shiboken2/default.nix
@@ -1,6 +1,5 @@
 {
   python,
-  pythonAtLeast,
   lib,
   stdenv,
   pyside2,
@@ -15,35 +14,20 @@ stdenv.mkDerivation {
 
   inherit (pyside2) version src patches;
 
-  postPatch =
-    (lib.optionalString (pythonAtLeast "3.12") ''
-      substituteInPlace \
-        ez_setup.py \
-        build_scripts/main.py \
-        build_scripts/options.py \
-        build_scripts/utils.py \
-        build_scripts/wheel_override.py \
-        build_scripts/wheel_utils.py \
-        sources/shiboken2/CMakeLists.txt \
-        sources/shiboken2/data/shiboken_helpers.cmake \
-        --replace-fail "from distutils" "import setuptools; from distutils"
-      substituteInPlace \
-        build_scripts/config.py \
-        build_scripts/main.py \
-        build_scripts/options.py \
-        build_scripts/setup_runner.py \
-        build_scripts/utils.py \
-        --replace-fail "import distutils" "import setuptools; import distutils"
-    '')
-    + ''
-      cd sources/shiboken2
-    '';
+  postPatch = ''
+    cd sources/shiboken2
+  '';
 
   CLANG_INSTALL_DIR = llvmPackages_15.libclang.out;
 
   nativeBuildInputs = [
     cmake
-    (python.withPackages (ps: with ps; [ setuptools ]))
+    (python.withPackages (
+      ps: with ps; [
+        distutils
+        setuptools
+      ]
+    ))
   ];
 
   buildInputs =

From abd8708ccc945c1c6c2d6fbd20f4cb07f8124097 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robert=20Sch=C3=BCtz?= <mail@dotlambda.de>
Date: Wed, 18 Sep 2024 20:30:13 -0700
Subject: [PATCH 016/107] python312Packages.pyside2: use python.pkgs.distutils

---
 .../python-modules/pyside2/default.nix        | 34 +++++--------------
 1 file changed, 9 insertions(+), 25 deletions(-)

diff --git a/pkgs/development/python-modules/pyside2/default.nix b/pkgs/development/python-modules/pyside2/default.nix
index d66ef9a52257..d228e3fde29f 100644
--- a/pkgs/development/python-modules/pyside2/default.nix
+++ b/pkgs/development/python-modules/pyside2/default.nix
@@ -1,6 +1,5 @@
 {
   python,
-  pythonAtLeast,
   fetchurl,
   lib,
   stdenv,
@@ -35,28 +34,9 @@ stdenv.mkDerivation rec {
     ./Modify-sendCommand-signatures.patch
   ];
 
-  postPatch =
-    (lib.optionalString (pythonAtLeast "3.12") ''
-      substituteInPlace \
-        ez_setup.py \
-        build_scripts/main.py \
-        build_scripts/options.py \
-        build_scripts/utils.py \
-        build_scripts/wheel_override.py \
-        build_scripts/wheel_utils.py \
-        sources/pyside2/CMakeLists.txt \
-        --replace-fail "from distutils" "import setuptools; from distutils"
-      substituteInPlace \
-        build_scripts/config.py \
-        build_scripts/main.py \
-        build_scripts/options.py \
-        build_scripts/setup_runner.py \
-        build_scripts/utils.py \
-        --replace-fail "import distutils" "import setuptools; import distutils"
-    '')
-    + ''
-      cd sources/pyside2
-    '';
+  postPatch = ''
+    cd sources/pyside2
+  '';
 
   cmakeFlags = [
     "-DBUILD_TESTS=OFF"
@@ -69,8 +49,12 @@ stdenv.mkDerivation rec {
     cmake
     ninja
     qt5.qmake
-    python
-    python.pkgs.setuptools
+    (python.withPackages (
+      ps: with ps; [
+        distutils
+        setuptools
+      ]
+    ))
   ];
 
   buildInputs =

From 6a3cf885c013c9aa1d52c00fc14379076bb7827f Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Thu, 19 Sep 2024 05:24:14 +0000
Subject: [PATCH 017/107] i3bar-river: 0.1.10 -> 1.0.0

---
 pkgs/by-name/i3/i3bar-river/package.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/by-name/i3/i3bar-river/package.nix b/pkgs/by-name/i3/i3bar-river/package.nix
index 8b9c4b6ad183..0cd000a97e72 100644
--- a/pkgs/by-name/i3/i3bar-river/package.nix
+++ b/pkgs/by-name/i3/i3bar-river/package.nix
@@ -7,16 +7,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "i3bar-river";
-  version = "0.1.10";
+  version = "1.0.0";
 
   src = fetchFromGitHub {
     owner = "MaxVerevkin";
     repo = "i3bar-river";
     rev = "v${version}";
-    hash = "sha256-CZdulSe4qPb9ZOyH26dMVCiv/Y2T/u8fLohK8VeS1Ao=";
+    hash = "sha256-Xa/9xDfVadwFEelxoXVjvPgOojNtol6XeDoBbDLbdS0=";
   };
 
-  cargoHash = "sha256-K+fDdAWrAKLQSMIMtEavhk7gIHINmL2eJLBhDLc1Jtg=";
+  cargoHash = "sha256-k4bWJjcOkYKh3WOnTM1+otWLw4C7sVzF6IVkYmpiNeQ=";
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ pango ];

From bf8188532bf3dc09cea0ebbc57d63fa79e693750 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Thu, 19 Sep 2024 06:04:10 +0000
Subject: [PATCH 018/107] rqlite: 8.30.0 -> 8.30.3

---
 pkgs/servers/sql/rqlite/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/servers/sql/rqlite/default.nix b/pkgs/servers/sql/rqlite/default.nix
index 37cce9c42ee4..81f35a20b5e4 100644
--- a/pkgs/servers/sql/rqlite/default.nix
+++ b/pkgs/servers/sql/rqlite/default.nix
@@ -5,16 +5,16 @@
 
 buildGoModule rec {
   pname = "rqlite";
-  version = "8.30.0";
+  version = "8.30.3";
 
   src = fetchFromGitHub {
     owner = "rqlite";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-Q0Gt75SUhyezqikhBoDeLY4fw6utkhe1lJHsmBRFNWY=";
+    sha256 = "sha256-W5/e22Qc/qHHHAtsTD9isUkdZ1j4Wk0g56uuAGbE4cU=";
   };
 
-  vendorHash = "sha256-waAhhbg02xyWRtj+hvzN9M0DLzz2NlkCmhmOLd3O2Sc=";
+  vendorHash = "sha256-P8v0vqxOfN9JjwsdoM6JmqGujGP5V68OAUc3KB/YU+k=";
 
   subPackages = [ "cmd/rqlite" "cmd/rqlited" "cmd/rqbench" ];
 

From 4a0793d075b79ef32456070c790aa37e689bbe80 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Thu, 19 Sep 2024 14:23:43 +0000
Subject: [PATCH 019/107] kokkos: 4.4.00 -> 4.4.01

---
 pkgs/by-name/ko/kokkos/package.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/by-name/ko/kokkos/package.nix b/pkgs/by-name/ko/kokkos/package.nix
index eb94813071cf..e32738d89197 100644
--- a/pkgs/by-name/ko/kokkos/package.nix
+++ b/pkgs/by-name/ko/kokkos/package.nix
@@ -8,13 +8,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "kokkos";
-  version = "4.4.00";
+  version = "4.4.01";
 
   src = fetchFromGitHub {
     owner = "kokkos";
     repo = "kokkos";
     rev = finalAttrs.version;
-    hash = "sha256-cEHGFmnYp5tPQ9BzRKopS78kAEBH+nNMRGJuWmpoHc0=";
+    hash = "sha256-VpUbvSQ6PQhhm9ovj97U9XEdbfro9K+LSmeSiNpqHuI=";
   };
 
   nativeBuildInputs = [

From 8250da44e4d4b578131bc1e44daf10bcb4a4036b Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Thu, 19 Sep 2024 16:16:10 +0000
Subject: [PATCH 020/107] simple-dftd3: 1.1.0 -> 1.1.1

---
 .../libraries/science/chemistry/simple-dftd3/default.nix      | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/science/chemistry/simple-dftd3/default.nix b/pkgs/development/libraries/science/chemistry/simple-dftd3/default.nix
index 08f303581c99..ebc853c369b5 100644
--- a/pkgs/development/libraries/science/chemistry/simple-dftd3/default.nix
+++ b/pkgs/development/libraries/science/chemistry/simple-dftd3/default.nix
@@ -15,13 +15,13 @@ assert !blas.isILP64;
 
 stdenv.mkDerivation rec {
   pname = "simple-dftd3";
-  version = "1.1.0";
+  version = "1.1.1";
 
   src = fetchFromGitHub {
     owner = "dftd3";
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-XeLf5v/GraDGcTsVIEBnS4AL8tMeO11YTuPHlNt5Ap8=";
+    hash = "sha256-gN8uBc/Fk5U7wlBX1tkAWdxN9UW1Dv11GvaIBkEyBJw=";
   };
 
   nativeBuildInputs = [ gfortran meson ninja pkg-config ];

From e5b4bd06190770b3d8393601323c96e4b878634c Mon Sep 17 00:00:00 2001
From: Samuel Tardieu <sam@rfc1149.net>
Date: Thu, 19 Sep 2024 18:18:51 +0200
Subject: [PATCH 021/107] =?UTF-8?q?rtz:=200.7.0=20=E2=86=92=200.7.1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

No change in `rtz` code. This is a patch release done to vendor
`utoipa-swagger-ui` and let us remove the patch made in
4478f423e35b72c4450f00f418b618c92fd48896.
---
 pkgs/tools/misc/rtz/Cargo.lock  | 13 ++++++++++---
 pkgs/tools/misc/rtz/default.nix | 20 ++------------------
 2 files changed, 12 insertions(+), 21 deletions(-)

diff --git a/pkgs/tools/misc/rtz/Cargo.lock b/pkgs/tools/misc/rtz/Cargo.lock
index a84b6ab4315f..3211e669bf95 100644
--- a/pkgs/tools/misc/rtz/Cargo.lock
+++ b/pkgs/tools/misc/rtz/Cargo.lock
@@ -524,9 +524,9 @@ dependencies = [
 
 [[package]]
 name = "cities-json"
-version = "0.4.0"
+version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d4720186a8069da0585af9ec1e2f9e815d7d1bbe47dc817b8597e31a609f898f"
+checksum = "b182994ec23e201f9bd45d2e4f6756dc176f9fc12aa957842bf01348725d1e66"
 dependencies = [
  "lazy_static",
  "rand 0.8.5",
@@ -2470,7 +2470,7 @@ dependencies = [
 
 [[package]]
 name = "rtz"
-version = "0.7.0"
+version = "0.7.1"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -3568,9 +3568,16 @@ dependencies = [
  "serde_json",
  "url",
  "utoipa",
+ "utoipa-swagger-ui-vendored",
  "zip 1.1.4",
 ]
 
+[[package]]
+name = "utoipa-swagger-ui-vendored"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c20d6689d3a5693eec4d21f6b9d7c54f37468b856da8e98a7bb316f7b32df6e3"
+
 [[package]]
 name = "uuid"
 version = "1.4.1"
diff --git a/pkgs/tools/misc/rtz/default.nix b/pkgs/tools/misc/rtz/default.nix
index 3d7670991a5b..61bf79379ee5 100644
--- a/pkgs/tools/misc/rtz/default.nix
+++ b/pkgs/tools/misc/rtz/default.nix
@@ -12,13 +12,13 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "rtz";
-  version = "0.7.0";
+  version = "0.7.1";
 
   src = fetchFromGitHub {
     owner = "twitchax";
     repo = "rtz";
     rev = "v${version}";
-    hash = "sha256-Wfb3FEZHjWYUtRI4Qn3QNunIXuzW1AIEZkIvtVrjBPs=";
+    hash = "sha256-V7N9NFIc/WWxLaahkjdS47Qj8sc3HRdKSkrBqi1ngA8=";
   };
 
   cargoLock = {
@@ -28,11 +28,6 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
-  swagger-ui = fetchurl {
-    url = "https://github.com/juhaku/utoipa/raw/master/utoipa-swagger-ui-vendored/res/v5.17.12.zip";
-    hash = "sha256-HK4z/JI+1yq8BTBJveYXv9bpN/sXru7bn/8g5mf2B/I=";
-  };
-
   nativeBuildInputs = [
     pkg-config
   ];
@@ -48,17 +43,6 @@ rustPlatform.buildRustPackage rec {
 
   buildFeatures = [ "web" ];
 
-  # ${swagger-ui} is read-only and the copy made by the build script
-  # is as well. Remove it so that checks can copy it again.
-  preCheck = ''
-    find target -name $(basename ${swagger-ui}) -delete
-  '';
-
-  env = {
-    # use local data file instead of requiring network access
-    SWAGGER_UI_DOWNLOAD_URL = "file://${swagger-ui}";
-  };
-
   meta = with lib; {
     description = "Tool to easily work with timezone lookups via a binary, a library, or a server";
     homepage = "https://github.com/twitchax/rtz";

From 922260030165b119e39eb281953ebeb2f2d63536 Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Thu, 19 Sep 2024 23:39:12 +0200
Subject: [PATCH 022/107] gapcast: init at 1.0.3

802.11 broadcast analyzer & injector

https://github.com/ANDRVV/gapcast
---
 pkgs/by-name/ga/gapcast/package.nix | 42 +++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 pkgs/by-name/ga/gapcast/package.nix

diff --git a/pkgs/by-name/ga/gapcast/package.nix b/pkgs/by-name/ga/gapcast/package.nix
new file mode 100644
index 000000000000..c68e19f64022
--- /dev/null
+++ b/pkgs/by-name/ga/gapcast/package.nix
@@ -0,0 +1,42 @@
+{
+  lib,
+  stdenv,
+  buildGoModule,
+  fetchFromGitHub,
+  libpcap,
+  xorg,
+}:
+
+buildGoModule rec {
+  pname = "gapcast";
+  version = "1.0.3";
+
+  src = fetchFromGitHub {
+    owner = "ANDRVV";
+    repo = "gapcast";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-Ei5XfcnbUoegB8lNEEQ3PrCzNJGaVeVd2lfrMWYoODw=";
+  };
+
+  vendorHash = "sha256-jn0zTorp/rkd91+ZGDbsNVcTxEndFMMrsb+/dGrZcy4=";
+
+  buildInputs = [
+    libpcap
+    xorg.libX11
+  ];
+
+  ldflags = [
+    "-s"
+    "-w"
+  ];
+
+  meta = {
+    description = "802.11 broadcast analyzer & injector";
+    homepage = "https://github.com/ANDRVV/gapcast";
+    changelog = "https://github.com/ANDRVV/gapcast/releases/tag/v${version}";
+    license = lib.licenses.gpl2Only;
+    maintainers = with lib.maintainers; [ fab ];
+    mainProgram = "gapcast";
+    broken = stdenv.isDarwin;
+  };
+}

From e9359ec5f8cd856973b2e56ddc9ca6e1def40980 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Thu, 19 Sep 2024 23:15:47 +0000
Subject: [PATCH 023/107] sbt-extras: 2024-07-10 -> 2024-09-13

---
 .../development/tools/build-managers/sbt-extras/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/tools/build-managers/sbt-extras/default.nix b/pkgs/development/tools/build-managers/sbt-extras/default.nix
index 7c44671a3b44..3241ea2aee8e 100644
--- a/pkgs/development/tools/build-managers/sbt-extras/default.nix
+++ b/pkgs/development/tools/build-managers/sbt-extras/default.nix
@@ -4,14 +4,14 @@
 
 stdenv.mkDerivation rec {
   pname = "sbt-extras";
-  rev = "ed4bce34420650fbc06cc161f1960b539f19289d";
-  version = "2024-07-10";
+  rev = "0b24c960935ffefc0ac7340137f81f0a7ed4d623";
+  version = "2024-09-13";
 
   src = fetchFromGitHub {
     owner = "paulp";
     repo = "sbt-extras";
     inherit rev;
-    sha256 = "lsYFupTSZQe2id0wuy+E7lszG4IT3R6fuo+Yql91MkM=";
+    sha256 = "4jYlpBq7l5vypbm/6kHHxAWXyJTuZ2n9/ij59yy9CNQ=";
   };
 
   dontBuild = true;

From 7b89ad82bec383ecaf6e063216793d031be0aa75 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Fri, 20 Sep 2024 01:39:30 +0000
Subject: [PATCH 024/107] devspace: 6.3.12 -> 6.3.13

---
 pkgs/development/tools/misc/devspace/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/tools/misc/devspace/default.nix b/pkgs/development/tools/misc/devspace/default.nix
index a6bed0257440..33e37cb77e73 100644
--- a/pkgs/development/tools/misc/devspace/default.nix
+++ b/pkgs/development/tools/misc/devspace/default.nix
@@ -7,13 +7,13 @@
 
 buildGoModule rec {
   pname = "devspace";
-  version = "6.3.12";
+  version = "6.3.13";
 
   src = fetchFromGitHub {
     owner = "devspace-sh";
     repo = "devspace";
     rev = "v${version}";
-    hash = "sha256-tnkMXB0BWavSZF3HEdvtCE42zgcHNRGI5CdK3RDvv9c=";
+    hash = "sha256-MWFDAyr4oHBe1K9ag5mC3iJAyJgs3ePa6W9//6T2G9A=";
   };
 
   vendorHash = null;

From 5312ad970c947865c9b92391dca13876896000e3 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Fri, 20 Sep 2024 02:57:35 +0000
Subject: [PATCH 025/107] git-quick-stats: 2.5.6 -> 2.5.7

---
 .../version-management/git-quick-stats/default.nix            | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/applications/version-management/git-quick-stats/default.nix b/pkgs/applications/version-management/git-quick-stats/default.nix
index 99be76387bd8..113388c48cd3 100644
--- a/pkgs/applications/version-management/git-quick-stats/default.nix
+++ b/pkgs/applications/version-management/git-quick-stats/default.nix
@@ -11,13 +11,13 @@
 
 stdenv.mkDerivation rec {
   pname = "git-quick-stats";
-  version = "2.5.6";
+  version = "2.5.7";
 
   src = fetchFromGitHub {
     repo = "git-quick-stats";
     owner = "arzzen";
     rev = version;
-    sha256 = "sha256-xd/ItpngreR77QTsSHLCgZfyvUZXBfOVPJaVtBZ2iTc=";
+    sha256 = "sha256-TGwoW4jpXbFdxk9HAZJTDhXIHhR1QEcDRCjspBv2KdQ=";
   };
 
   nativeBuildInputs = [ makeWrapper ];

From d359326c5877da2bcdfcb3f661600113fed81e0b Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Fri, 20 Sep 2024 10:45:44 +0000
Subject: [PATCH 026/107] vwsfriend: 0.24.5 -> 0.24.7

---
 pkgs/by-name/vw/vwsfriend/package.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/by-name/vw/vwsfriend/package.nix b/pkgs/by-name/vw/vwsfriend/package.nix
index 63c7ff143401..60a4995a1305 100644
--- a/pkgs/by-name/vw/vwsfriend/package.nix
+++ b/pkgs/by-name/vw/vwsfriend/package.nix
@@ -6,14 +6,14 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "vwsfriend";
-  version = "0.24.5";
+  version = "0.24.7";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "tillsteinbach";
     repo = "VWsFriend";
     rev = "refs/tags/v${version}";
-    hash = "sha256-bKL0ExHV/wz3qwB5pMgZDkASr93sCUb01uTipkE5iJU=";
+    hash = "sha256-ZGH7rcGSAYDBSjv1jZjT/uGJIrFL71RYK6vX71RHz8E=";
   };
 
   sourceRoot = "${src.name}/vwsfriend";

From a60418cc6612fcbcd7e51f89fb4ff46641eb4326 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Fri, 20 Sep 2024 12:20:37 +0000
Subject: [PATCH 027/107] drawterm: 0-unstable-2024-09-08 ->
 0-unstable-2024-09-09

---
 pkgs/tools/admin/drawterm/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/tools/admin/drawterm/default.nix b/pkgs/tools/admin/drawterm/default.nix
index 6ba8bbedd76f..33df51866028 100644
--- a/pkgs/tools/admin/drawterm/default.nix
+++ b/pkgs/tools/admin/drawterm/default.nix
@@ -19,13 +19,13 @@
 
 stdenv.mkDerivation {
   pname = "drawterm";
-  version = "0-unstable-2024-09-08";
+  version = "0-unstable-2024-09-09";
 
   src = fetchFrom9Front {
     owner = "plan9front";
     repo = "drawterm";
-    rev = "877bce095a192ead0e9b6e0d5ce3071482cf0f6e";
-    hash = "sha256-s1l7IyWRzaBTtoj71W+Ubmcigw4w7Ypf1Yg44vxN2Qg=";
+    rev = "789b8fe40e156ad0252230b13dd4ada96f3eed8b";
+    hash = "sha256-M/kTV13MCcWycpJ2+jhXBTIoQuXakqO2llEL3PEjI/g=";
   };
 
   enableParallelBuilding = true;

From b4b96bec9dea7feb253c591bae0e0ae4295cb109 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Fri, 20 Sep 2024 12:32:51 +0000
Subject: [PATCH 028/107] praat: 6.4.19 -> 6.4.20

---
 pkgs/applications/audio/praat/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/applications/audio/praat/default.nix b/pkgs/applications/audio/praat/default.nix
index 505a3eee4da1..16f928328298 100644
--- a/pkgs/applications/audio/praat/default.nix
+++ b/pkgs/applications/audio/praat/default.nix
@@ -11,13 +11,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "praat";
-  version = "6.4.19";
+  version = "6.4.20";
 
   src = fetchFromGitHub {
     owner = "praat";
     repo = "praat";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-dK1rCfyTIASMGWEWQomdbazpI6faBvlrRpyGDuSoW5g=";
+    hash = "sha256-qal7eIKht0XkRDEsAfNkNDwmDYrr/cLQV4pMMWE+kFk=";
   };
 
   nativeBuildInputs = [

From 80539ddd5065c8aeaed0f2005fe690f5559d1d80 Mon Sep 17 00:00:00 2001
From: Alexander Kiselyov <aleksandr.kiselyov@gmail.com>
Date: Fri, 20 Sep 2024 15:58:45 +0300
Subject: [PATCH 029/107] python3Packages.assay: 2022-01-19 -> 2024-05-09

---
 pkgs/development/python-modules/assay/default.nix | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/python-modules/assay/default.nix b/pkgs/development/python-modules/assay/default.nix
index 25108a26d404..4e6a4cb6b946 100644
--- a/pkgs/development/python-modules/assay/default.nix
+++ b/pkgs/development/python-modules/assay/default.nix
@@ -7,14 +7,14 @@
 
 buildPythonPackage rec {
   pname = "assay";
-  version = "unstable-2022-01-19";
+  version = "unstable-2024-05-09";
   format = "setuptools";
 
   src = fetchFromGitHub {
     owner = "brandon-rhodes";
     repo = pname;
-    rev = "bb62d1f7d51d798b05a88045fff3a2ff92c299c3";
-    hash = "sha256-FuAD74mFJ9F9AMgB3vPmODAlZKgPR7FQ4yn7HEBS5Rw=";
+    rev = "74617d70e77afa09f58b3169cf496679ac5d5621";
+    hash = "sha256-zYpLtcXZ16EJWKSCqxFkSz/G9PwIZEQGBrYiJKuqnc4=";
   };
 
   pythonImportsCheck = [ "assay" ];
@@ -24,6 +24,5 @@ buildPythonPackage rec {
     description = "Attempt to write a Python testing framework I can actually stand";
     license = licenses.mit;
     maintainers = with maintainers; [ zane ];
-    broken = pythonAtLeast "3.11";
   };
 }

From c9b35b9a1867ada44880bff1627c0a296b48ab66 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Fri, 20 Sep 2024 16:24:30 +0000
Subject: [PATCH 030/107] argo: 3.5.10 -> 3.5.11

---
 pkgs/applications/networking/cluster/argo/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/applications/networking/cluster/argo/default.nix b/pkgs/applications/networking/cluster/argo/default.nix
index 0d004cbb94ad..815ac16a8573 100644
--- a/pkgs/applications/networking/cluster/argo/default.nix
+++ b/pkgs/applications/networking/cluster/argo/default.nix
@@ -34,16 +34,16 @@ let
 in
 buildGoModule rec {
   pname = "argo";
-  version = "3.5.10";
+  version = "3.5.11";
 
   src = fetchFromGitHub {
     owner = "argoproj";
     repo = "argo";
     rev = "refs/tags/v${version}";
-    hash = "sha256-35Hp5lISQuFNsbSOKsLRcD695ZRCgQue+H8rKEPma5M=";
+    hash = "sha256-Yw61BCcMLl/zkmPm79SI0AdT6Nj2bxQkt6IKRBu0FmQ=";
   };
 
-  vendorHash = "sha256-dGDXDpjf1kWcqBhCMKLXGXax6ApOL9eIiiem86CxdGs=";
+  vendorHash = "sha256-QwQasJMSEnHvBxyxCjLuinPt47XAhERch3j60KXGxa4=";
 
   doCheck = false;
 

From 91fc27ded9173103a0b910aaf9fae7722b624dba Mon Sep 17 00:00:00 2001
From: Anderson Torres <torres.anderson.85@protonmail.com>
Date: Fri, 20 Sep 2024 18:07:31 -0300
Subject: [PATCH 031/107] emacs28-gtk2: remove

Hey, is this the only code that touches GTK2 here?
---
 pkgs/applications/editors/emacs/default.nix    |  4 ----
 pkgs/applications/editors/emacs/make-emacs.nix | 13 ++-----------
 pkgs/top-level/aliases.nix                     |  1 +
 pkgs/top-level/all-packages.nix                |  1 -
 4 files changed, 3 insertions(+), 16 deletions(-)

diff --git a/pkgs/applications/editors/emacs/default.nix b/pkgs/applications/editors/emacs/default.nix
index df04ceaf2c75..faf06ca843c7 100644
--- a/pkgs/applications/editors/emacs/default.nix
+++ b/pkgs/applications/editors/emacs/default.nix
@@ -20,10 +20,6 @@ lib.makeScope pkgs.newScope (self:
 
     emacs28 = callPackage (self.sources.emacs28) inheritedArgs;
 
-    emacs28-gtk2 = self.emacs28.override {
-      withGTK2 = true;
-    };
-
     emacs28-gtk3 = self.emacs28.override {
       withGTK3 = true;
     };
diff --git a/pkgs/applications/editors/emacs/make-emacs.nix b/pkgs/applications/editors/emacs/make-emacs.nix
index ced468858760..cbcd022c3d35 100644
--- a/pkgs/applications/editors/emacs/make-emacs.nix
+++ b/pkgs/applications/editors/emacs/make-emacs.nix
@@ -22,7 +22,6 @@
 , gnutls
 , gpm
 , gsettings-desktop-schemas
-, gtk2-x11
 , gtk3
 , gtk3-x11
 , harfbuzz
@@ -69,7 +68,6 @@
 , withAthena ? false
 , withCsrc ? true
 , withDbus ? stdenv.isLinux
-, withGTK2 ? false
 , withGTK3 ? withPgtk && !noGui
 , withGlibNetworking ? withPgtk || withGTK3 || (withX && withXwidgets)
 , withGpm ? stdenv.isLinux
@@ -95,8 +93,7 @@
 # Options
 , siteStart ? ./site-start.el
 , toolkit ? (
-  if withGTK2 then "gtk2"
-  else if withGTK3 then "gtk3"
+  if withGTK3 then "gtk3"
   else if withMotif then "motif"
   else if withAthena then "athena"
   else "lucid")
@@ -117,14 +114,11 @@
 , WebKit
 }:
 
-assert (withGTK2 && !withNS && variant != "macport") -> withX;
 assert (withGTK3 && !withNS && variant != "macport") -> withX || withPgtk;
 
-assert noGui -> !(withX || withGTK2 || withGTK3 || withNS || variant == "macport");
+assert noGui -> !(withX || withGTK3 || withNS || variant == "macport");
 assert withAcl -> stdenv.isLinux;
 assert withAlsaLib -> stdenv.isLinux;
-assert withGTK2 -> !(withGTK3 || withPgtk);
-assert withGTK3 -> !withGTK2 || withPgtk;
 assert withGpm -> stdenv.isLinux;
 assert withNS -> stdenv.isDarwin && !(withX || variant == "macport");
 assert withPgtk -> withGTK3 && !withX;
@@ -148,7 +142,6 @@ mkDerivation (finalAttrs: {
              else if variant == "macport" then "-macport"
              else if withPgtk then "-pgtk"
              else if withGTK3 then "-gtk3"
-             else if withGTK2 then "-gtk2"
              else "");
   inherit version;
 
@@ -241,8 +234,6 @@ mkDerivation (finalAttrs: {
   ] ++ lib.optionals (stdenv.isLinux && withX) [
     libotf
     m17n_lib
-  ] ++ lib.optionals (withX && withGTK2) [
-    gtk2-x11
   ] ++ lib.optionals (withX && withGTK3) [
     gtk3-x11
   ] ++ lib.optionals (withX && withMotif) [
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index f56074aae5a3..9e4f1d06e000 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -413,6 +413,7 @@ mapAliases ({
   elixir_ls = elixir-ls; # Added 2023-03-20
 
   # Emacs
+  emacs28-gtk2 = throw "emacs28-gtk2 was removed because GTK2 is EOL; migrate to emacs28{,-gtk3,-nox} or to more recent versions of Emacs."; # Added 2024-09-20
   emacs28NativeComp = emacs28; # Added 2022-06-08
   emacs28Packages = emacs28.pkgs; # Added 2021-10-04
   emacs28WithPackages = emacs28.pkgs.withPackages; # Added 2021-10-04
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index c874ee7429e3..0f4bbb3a4518 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -29212,7 +29212,6 @@ with pkgs;
 
   inherit (recurseIntoAttrs (callPackage ../applications/editors/emacs { }))
     emacs28
-    emacs28-gtk2
     emacs28-gtk3
     emacs28-nox
 

From f5061b9fb6e8188f279da0ca7841cb2775adaf8b Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Fri, 20 Sep 2024 22:45:55 +0000
Subject: [PATCH 032/107] wasmtime: 24.0.0 -> 25.0.0

---
 pkgs/development/interpreters/wasmtime/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/interpreters/wasmtime/default.nix b/pkgs/development/interpreters/wasmtime/default.nix
index 8bcb83677b38..19b309208bc7 100644
--- a/pkgs/development/interpreters/wasmtime/default.nix
+++ b/pkgs/development/interpreters/wasmtime/default.nix
@@ -2,19 +2,19 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "wasmtime";
-  version = "24.0.0";
+  version = "25.0.0";
 
   src = fetchFromGitHub {
     owner = "bytecodealliance";
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-pR6yjJf0szjB73+vqXT4d8P9WD+SIOkEOe4Wl6EgIqQ=";
+    hash = "sha256-3SircJsg/SFyPfIYLHiwXqkQAHXocnUyPYsMRnGaxsA=";
     fetchSubmodules = true;
   };
 
   # Disable cargo-auditable until https://github.com/rust-secure-code/cargo-auditable/issues/124 is solved.
   auditable = false;
-  cargoHash = "sha256-bZtBEmzmu63wNlGhYvN0gYKkLPxzBHZ1iO16BMPD3tE=";
+  cargoHash = "sha256-CvHrZYZVAY2ff3fSBDMeucOru6NkRRQPILBAC/YjfTA=";
   cargoBuildFlags = [ "--package" "wasmtime-cli" "--package" "wasmtime-c-api" ];
 
   outputs = [ "out" "dev" ];

From 62c5d3fd0f0b7c1992c41be132ccc47f869f73a6 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Sat, 21 Sep 2024 02:33:34 +0000
Subject: [PATCH 033/107] python312Packages.watermark: 2.4.0 -> 2.5.0

---
 pkgs/development/python-modules/watermark/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/watermark/default.nix b/pkgs/development/python-modules/watermark/default.nix
index b6f9eeeb90a8..3af49dd8d38d 100644
--- a/pkgs/development/python-modules/watermark/default.nix
+++ b/pkgs/development/python-modules/watermark/default.nix
@@ -12,7 +12,7 @@
 
 buildPythonPackage rec {
   pname = "watermark";
-  version = "2.4.0";
+  version = "2.5.0";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     owner = "rasbt";
     repo = "watermark";
     rev = "refs/tags/v${version}";
-    hash = "sha256-4/1Y7cdh1tF33jgPrqdxCGPcRnnxx+Wf8lyztF54Ck0=";
+    hash = "sha256-UR4kV6UoZ/JLO19on+qEH+M05QIsT0SXvXJtTMCKuZM=";
   };
 
   nativeBuildInputs = [ setuptools ];

From 523e5df5147e15dd63262506aca6698466758bc7 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Sat, 21 Sep 2024 23:28:17 +0000
Subject: [PATCH 034/107] storj-uplink: 1.111.4 -> 1.113.4

---
 pkgs/applications/networking/sync/storj-uplink/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/applications/networking/sync/storj-uplink/default.nix b/pkgs/applications/networking/sync/storj-uplink/default.nix
index f25fcb8786d2..07548fbe6631 100644
--- a/pkgs/applications/networking/sync/storj-uplink/default.nix
+++ b/pkgs/applications/networking/sync/storj-uplink/default.nix
@@ -5,18 +5,18 @@
 
 buildGoModule rec {
   pname = "storj-uplink";
-  version = "1.111.4";
+  version = "1.113.4";
 
   src = fetchFromGitHub {
     owner = "storj";
     repo = "storj";
     rev = "v${version}";
-    hash = "sha256-WwqB0la3JBJ5074Y0erOIC60++pLLbFF3LhekbRBUWA=";
+    hash = "sha256-nf2fNnkY6Z0T5dfSRUmqYpstV5yP+dJiZqB/AF3NR94=";
   };
 
   subPackages = [ "cmd/uplink" ];
 
-  vendorHash = "sha256-dA/XMBnFRDBqBlYz3j0Q6E7asmrixG71Vv52F9WX8ew=";
+  vendorHash = "sha256-NnFCs64xUoFFHFQs/3YtdJkUurd3TxNieZJ96VqnJaU=";
 
   ldflags = [ "-s" "-w" ];
 

From 3f954af976afb25fc22fd41299b5a198a5d4803d Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Sun, 22 Sep 2024 00:44:07 +0000
Subject: [PATCH 035/107] dpp: 10.0.30 -> 10.0.31

---
 pkgs/by-name/dp/dpp/package.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/by-name/dp/dpp/package.nix b/pkgs/by-name/dp/dpp/package.nix
index 7e639cc021d0..bd93b48262d4 100644
--- a/pkgs/by-name/dp/dpp/package.nix
+++ b/pkgs/by-name/dp/dpp/package.nix
@@ -10,13 +10,13 @@
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "dpp";
-  version = "10.0.30";
+  version = "10.0.31";
 
   src = fetchFromGitHub {
     owner = "brainboxdotcc";
     repo = "DPP";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-FW1DKbVwPPlvLtv8XzpqaAZjS1y5hasq3Rhh2u08Sz0=";
+    hash = "sha256-IsgYGfPcqiJBQ1MM97jI7ksvc49ZcCn3i6/yMe8zLjY=";
   };
 
   nativeBuildInputs = [

From 82978a85c6731eb072a916cbfb8d6d807dd88fcb Mon Sep 17 00:00:00 2001
From: Geoffrey Thomas <geofft@ldpreload.com>
Date: Sun, 22 Sep 2024 14:44:10 -0400
Subject: [PATCH 036/107] Revert "nixos/profiles/base: install vim w/nix-syntax
 plugin"

Adding custom plugins causes the `vim` command to be a wrapper script
running `vim -u ...`, which makes it not load the default ~/.vimrc.
(This is analogous to #177375 about neovim.)

As of Vim 9, the syntax-highlighting portion of the nix plugin is
upstream; the full plugin is only needed for indentation etc. (see also
e261eb152ba8aa72a139a15e9856495ba348f8af). So, using regular pkgs.vim
works around this behavior/bug and causes any ~/.vimrc to get loaded,
without regressing the syntax highlighting support that motivated the
change being reverted here.

This reverts commit 0b5a0cbc69f18f2a123bf4ae0751ee718ef04e53.
---
 nixos/modules/profiles/base.nix | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/nixos/modules/profiles/base.nix b/nixos/modules/profiles/base.nix
index be79bd205cb3..943f9d8e3106 100644
--- a/nixos/modules/profiles/base.nix
+++ b/nixos/modules/profiles/base.nix
@@ -19,13 +19,7 @@
     pkgs.cryptsetup # needed for dm-crypt volumes
 
     # Some text editors.
-    (pkgs.vim.customize {
-      name = "vim";
-      vimrcConfig.packages.default = {
-        start = [ pkgs.vimPlugins.vim-nix ];
-      };
-      vimrcConfig.customRC = "syntax on";
-    })
+    pkgs.vim
 
     # Some networking tools.
     pkgs.fuse

From 9a85a7e2ceda61219b1c84df691ce573baa34699 Mon Sep 17 00:00:00 2001
From: Martin Weinelt <hexa@darmstadt.ccc.de>
Date: Mon, 23 Sep 2024 16:53:59 +0200
Subject: [PATCH 037/107] nixos/pretix: enable log rotation

This limits the amount of logs we store by default to 3 months.
---
 nixos/modules/services/web-apps/pretix.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/nixos/modules/services/web-apps/pretix.nix b/nixos/modules/services/web-apps/pretix.nix
index bcd59ce40ae7..f521c49668c8 100644
--- a/nixos/modules/services/web-apps/pretix.nix
+++ b/nixos/modules/services/web-apps/pretix.nix
@@ -403,6 +403,15 @@ in
       '')
     ];
 
+    services.logrotate.settings.pretix = {
+      files = "${cfg.settings.pretix.logdir}/*.log";
+      su = "${cfg.user} ${cfg.group}";
+      frequency = "weekly";
+      rotate = "12";
+      copytruncate = true;
+      compress = true;
+    };
+
     services = {
       nginx = mkIf cfg.nginx.enable {
         enable = true;

From 1d8c946fdbd247e39531a28c7287027e83478ba3 Mon Sep 17 00:00:00 2001
From: Martin Weinelt <hexa@darmstadt.ccc.de>
Date: Mon, 23 Sep 2024 16:58:52 +0200
Subject: [PATCH 038/107] nixos/pretalx: enable log rotation

This limits the amount of logs we store by default to 3 months.
---
 nixos/modules/services/web-apps/pretalx.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/nixos/modules/services/web-apps/pretalx.nix b/nixos/modules/services/web-apps/pretalx.nix
index 2280d9165b40..35af8c26482c 100644
--- a/nixos/modules/services/web-apps/pretalx.nix
+++ b/nixos/modules/services/web-apps/pretalx.nix
@@ -294,6 +294,15 @@ in
       '')
     ];
 
+    services.logrotate.settings.pretalx = {
+      files = "${cfg.settings.filesystem.logs}/*.log";
+      su = "${cfg.user} ${cfg.group}";
+      frequency = "weekly";
+      rotate = "12";
+      copytruncate = true;
+      compress = true;
+    };
+
     services = {
       nginx = lib.mkIf cfg.nginx.enable {
         enable = true;

From 4337d63f1fae717d87efa089a96b1a2052255195 Mon Sep 17 00:00:00 2001
From: cfhammill <christopher.hammill@unityhealth.to>
Date: Mon, 23 Sep 2024 12:05:57 -0400
Subject: [PATCH 039/107] python3Packages.mamba-ssm: init at 2.2.2

---
 .../python-modules/causal-conv1d/default.nix  | 69 +++++++++++++++++
 .../python-modules/mamba-ssm/default.nix      | 77 +++++++++++++++++++
 pkgs/top-level/python-packages.nix            |  4 +
 3 files changed, 150 insertions(+)
 create mode 100644 pkgs/development/python-modules/causal-conv1d/default.nix
 create mode 100644 pkgs/development/python-modules/mamba-ssm/default.nix

diff --git a/pkgs/development/python-modules/causal-conv1d/default.nix b/pkgs/development/python-modules/causal-conv1d/default.nix
new file mode 100644
index 000000000000..0653959ed6da
--- /dev/null
+++ b/pkgs/development/python-modules/causal-conv1d/default.nix
@@ -0,0 +1,69 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  ninja,
+  setuptools,
+  torch,
+  cudaPackages,
+  rocmPackages,
+  config,
+  cudaSupport ? config.cudaSupport,
+  which,
+}:
+
+buildPythonPackage rec {
+  pname = "causal-conv1d";
+  version = "1.4.0";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "Dao-AILab";
+    repo = "causal-conv1d";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-p5x5u3zEmEMN3mWd88o3jmcpKUnovTvn7I9jIOj/ie0=";
+  };
+
+  build-system = [
+    ninja
+    setuptools
+    torch
+  ];
+
+  nativeBuildInputs = [ which ];
+
+  buildInputs = (
+    lib.optionals cudaSupport (
+      with cudaPackages;
+      [
+        cuda_cudart # cuda_runtime.h, -lcudart
+        cuda_cccl
+        libcusparse # cusparse.h
+        libcusolver # cusolverDn.h
+        cuda_nvcc
+        libcublas
+      ]
+    )
+  );
+
+  dependencies = [
+    torch
+  ];
+
+  # pytest tests not enabled due to nvidia GPU dependency
+  pythonImportsCheck = [ "causal_conv1d" ];
+
+  env = {
+    CAUSAL_CONV1D_FORCE_BUILD = "TRUE";
+  } // lib.optionalAttrs cudaSupport { CUDA_HOME = "${lib.getDev cudaPackages.cuda_nvcc}"; };
+
+  meta = with lib; {
+    description = "Causal depthwise conv1d in CUDA with a PyTorch interface";
+    homepage = "https://github.com/Dao-AILab/causal-conv1d";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ cfhammill ];
+    # The package requires CUDA or ROCm, the ROCm build hasn't
+    # been completed or tested, so broken if not using cuda.
+    broken = !cudaSupport;
+  };
+}
diff --git a/pkgs/development/python-modules/mamba-ssm/default.nix b/pkgs/development/python-modules/mamba-ssm/default.nix
new file mode 100644
index 000000000000..11ac68c1e19d
--- /dev/null
+++ b/pkgs/development/python-modules/mamba-ssm/default.nix
@@ -0,0 +1,77 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  causal-conv1d,
+  einops,
+  ninja,
+  setuptools,
+  torch,
+  transformers,
+  triton,
+  cudaPackages,
+  rocmPackages,
+  config,
+  cudaSupport ? config.cudaSupport,
+  which,
+}:
+
+buildPythonPackage rec {
+  pname = "mamba";
+  version = "2.2.2";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "state-spaces";
+    repo = "mamba";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-R702JjM3AGk7upN7GkNK8u1q4ekMK9fYQkpO6Re45Ng=";
+  };
+
+  build-system = [
+    ninja
+    setuptools
+    torch
+  ];
+
+  nativeBuildInputs = [ which ];
+
+  buildInputs = (
+    lib.optionals cudaSupport (
+      with cudaPackages;
+      [
+        cuda_cudart # cuda_runtime.h, -lcudart
+        cuda_cccl
+        libcusparse # cusparse.h
+        libcusolver # cusolverDn.h
+        cuda_nvcc
+        libcublas
+      ]
+    )
+  );
+
+  dependencies = [
+    causal-conv1d
+    einops
+    torch
+    transformers
+    triton
+  ];
+
+  env = {
+    MAMBA_FORCE_BUILD = "TRUE";
+  } // lib.optionalAttrs cudaSupport { CUDA_HOME = "${lib.getDev cudaPackages.cuda_nvcc}"; };
+
+  # pytest tests not enabled due to nvidia GPU dependency
+  pythonImportsCheck = [ "mamba_ssm" ];
+
+  meta = with lib; {
+    description = "Linear-Time Sequence Modeling with Selective State Spaces";
+    homepage = "https://github.com/state-spaces/mamba";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ cfhammill ];
+    # The package requires CUDA or ROCm, the ROCm build hasn't
+    # been completed or tested, so broken if not using cuda.
+    broken = !cudaSupport;
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 091be094c5b2..8ae4f18ef7e7 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2050,6 +2050,8 @@ self: super: with self; {
 
   cattrs = callPackage ../development/python-modules/cattrs { };
 
+  causal-conv1d = callPackage ../development/python-modules/causal-conv1d { };
+
   cbor2 = callPackage ../development/python-modules/cbor2 { };
 
   cbor = callPackage ../development/python-modules/cbor { };
@@ -7539,6 +7541,8 @@ self: super: with self; {
 
   malduck = callPackage ../development/python-modules/malduck { };
 
+  mamba-ssm = callPackage ../development/python-modules/mamba-ssm { };
+
   managesieve = callPackage ../development/python-modules/managesieve { };
 
   mando = callPackage ../development/python-modules/mando { };

From a237288e6818111b14acf2a1f60533953e186b3f Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Mon, 23 Sep 2024 21:01:05 +0200
Subject: [PATCH 040/107] python312Packages.python-motionmount: 2.1.0 -> 2.2.0

Diff: https://github.com/vogelsproducts/python-MotionMount/compare/refs/tags/2.1.0...2.2.0
---
 .../development/python-modules/python-motionmount/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/python-motionmount/default.nix b/pkgs/development/python-modules/python-motionmount/default.nix
index 6335a612a545..a97d7be87769 100644
--- a/pkgs/development/python-modules/python-motionmount/default.nix
+++ b/pkgs/development/python-modules/python-motionmount/default.nix
@@ -8,7 +8,7 @@
 
 buildPythonPackage rec {
   pname = "python-motionmount";
-  version = "2.1.0";
+  version = "2.2.0";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
@@ -17,7 +17,7 @@ buildPythonPackage rec {
     owner = "vogelsproducts";
     repo = "python-MotionMount";
     rev = "refs/tags/${version}";
-    hash = "sha256-BOzv0IuEXK0uzJuO1F1k8baL8KmzV/KFWcKJPSHORsU=";
+    hash = "sha256-07wTlyfUSt44dBwOXjkXADA+HDy8531KYxJAKqBWKeQ=";
   };
 
   build-system = [ setuptools ];

From 8cfeed1ecf8669258ff2f3c44f32e7913e5695e4 Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Mon, 23 Sep 2024 23:45:30 +0200
Subject: [PATCH 041/107] python312Packages.types-aiobotocore: 2.15.0 -> 2.15.1

---
 pkgs/development/python-modules/types-aiobotocore/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/types-aiobotocore/default.nix b/pkgs/development/python-modules/types-aiobotocore/default.nix
index 17f41b1164cd..a91d608c77fc 100644
--- a/pkgs/development/python-modules/types-aiobotocore/default.nix
+++ b/pkgs/development/python-modules/types-aiobotocore/default.nix
@@ -364,13 +364,13 @@
 
 buildPythonPackage rec {
   pname = "types-aiobotocore";
-  version = "2.15.0";
+  version = "2.15.1";
   pyproject = true;
 
   src = fetchPypi {
     pname = "types_aiobotocore";
     inherit version;
-    hash = "sha256-65wheAyrOIe6rwrjygLF/gq3uYj0qaXEPnr/L4lNfKc=";
+    hash = "sha256-DW7QyEVvvlnew0WqFCgA2wg3uYvKHtX2jPbvbVITd0U=";
   };
 
   build-system = [ setuptools ];

From 82e147d9f6013bc21d97e7d21126b3a30e831c7d Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Mon, 23 Sep 2024 23:54:46 +0200
Subject: [PATCH 042/107] python312Packages.types-aiobotocore-*: adjust update
 script

---
 .../python-modules/types-aiobotocore/update.sh       | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/pkgs/development/python-modules/types-aiobotocore/update.sh b/pkgs/development/python-modules/types-aiobotocore/update.sh
index f98f653a7278..ea5b05fdaacd 100755
--- a/pkgs/development/python-modules/types-aiobotocore/update.sh
+++ b/pkgs/development/python-modules/types-aiobotocore/update.sh
@@ -5,14 +5,14 @@ set -eu -o pipefail
 
 source_file=pkgs/development/python-modules/types-aiobotocore-packages/default.nix
 
-#nix-update python312Packages.types-aiobotocore --commit --build
+nix-update python312Packages.types-aiobotocore --commit --build
 
 packages=(
   types-aiobotocore-accessanalyzer
   types-aiobotocore-account
   types-aiobotocore-acm
   types-aiobotocore-acm-pca
-  types-aiobotocore-alexaforbusiness
+  # types-aiobotocore-alexaforbusiness  Obsolete, will be removed soon
   types-aiobotocore-amp
   types-aiobotocore-amplify
   types-aiobotocore-amplifybackend
@@ -39,7 +39,7 @@ packages=(
   types-aiobotocore-autoscaling-plans
   types-aiobotocore-backup
   types-aiobotocore-backup-gateway
-  types-aiobotocore-backupstorage
+  # types-aiobotocore-backupstorage  Obsolete, will be removed soon
   types-aiobotocore-batch
   types-aiobotocore-billingconductor
   types-aiobotocore-braket
@@ -73,7 +73,7 @@ packages=(
   types-aiobotocore-codeguru-security
   types-aiobotocore-codeguruprofiler
   types-aiobotocore-codepipeline
-  types-aiobotocore-codestar
+  # types-aiobotocore-codestar  Obsolete, will be removed soon
   types-aiobotocore-codestar-connections
   types-aiobotocore-codestar-notifications
   types-aiobotocore-cognito-identity
@@ -151,7 +151,7 @@ packages=(
   types-aiobotocore-guardduty
   types-aiobotocore-health
   types-aiobotocore-healthlake
-  types-aiobotocore-honeycode
+  # types-aiobotocore-honeycode  Obsolete, will be removed soon
   types-aiobotocore-iam
   types-aiobotocore-identitystore
   types-aiobotocore-imagebuilder
@@ -235,7 +235,7 @@ packages=(
   types-aiobotocore-migrationhub-config
   types-aiobotocore-migrationhuborchestrator
   types-aiobotocore-migrationhubstrategy
-  types-aiobotocore-mobile
+  # types-aiobotocore-mobile  Obsolete, will be removed soon
   types-aiobotocore-mq
   types-aiobotocore-mturk
   types-aiobotocore-mwaa

From 3756dd83dd4c419e04e4a528773587f9cb21f1eb Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 04:55:13 +0000
Subject: [PATCH 043/107] ansible-lint: 24.9.0 -> 24.9.2

---
 pkgs/tools/admin/ansible/lint.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/tools/admin/ansible/lint.nix b/pkgs/tools/admin/ansible/lint.nix
index f161f75c1d3a..0e2757d548e8 100644
--- a/pkgs/tools/admin/ansible/lint.nix
+++ b/pkgs/tools/admin/ansible/lint.nix
@@ -6,13 +6,13 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "ansible-lint";
-  version = "24.9.0";
+  version = "24.9.2";
   format = "pyproject";
 
   src = fetchPypi {
     inherit version;
     pname = "ansible_lint";
-    hash = "sha256-uMnJTGw7xotDvPewZ+KG+CAeNBdyx9Pb2wNk7KsrOUQ=";
+    hash = "sha256-fP9sWvEO+Za3xgEMvUjJFZJ2SuCY8rBUCHJomaEGan8=";
   };
 
   postPatch = ''

From bedf6f94ca7e408d277e45e8127ea0ac50885d58 Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Tue, 24 Sep 2024 08:27:48 +0200
Subject: [PATCH 044/107] python312Packages.types-aiobotocore-*: 2.15.0 ->
 2.15.1

---
 .../types-aiobotocore-packages/default.nix    | 1380 ++++++++---------
 1 file changed, 690 insertions(+), 690 deletions(-)

diff --git a/pkgs/development/python-modules/types-aiobotocore-packages/default.nix b/pkgs/development/python-modules/types-aiobotocore-packages/default.nix
index c9c354d5dd84..230615d276d0 100644
--- a/pkgs/development/python-modules/types-aiobotocore-packages/default.nix
+++ b/pkgs/development/python-modules/types-aiobotocore-packages/default.nix
@@ -60,1414 +60,1414 @@ let
 in
 rec {
   types-aiobotocore-accessanalyzer =
-    buildTypesAiobotocorePackage "accessanalyzer" "2.15.0"
-      "sha256-aXiUguHjVb9uw4bM1jpJLEFDSJGPEwPVBXUOSylrJUU=";
+    buildTypesAiobotocorePackage "accessanalyzer" "2.15.1"
+      "sha256-DALSwzPriQHPReCA4DxiqDE4egt1d0kVadDLqXSEV6k=";
 
   types-aiobotocore-account =
-    buildTypesAiobotocorePackage "account" "2.15.0"
-      "sha256-frvRCAYh+zn8k1AXzGQuH84QnhXyIiUR7BZBZfH5Vao=";
+    buildTypesAiobotocorePackage "account" "2.15.1"
+      "sha256-7VNgcslaFFeprI+G9Owfj24o8CFmGxqct4QWSGgxwI8=";
 
   types-aiobotocore-acm =
-    buildTypesAiobotocorePackage "acm" "2.15.0"
-      "sha256-au29Nkw94QcHk1c+CCsaNBM+6bkOPPr17yj5naKlFJI=";
+    buildTypesAiobotocorePackage "acm" "2.15.1"
+      "sha256-ItdsLbXVs92zb9JDwuHHvYVKArUAAeDUdt6tPxNikV0=";
 
   types-aiobotocore-acm-pca =
-    buildTypesAiobotocorePackage "acm-pca" "2.15.0"
-      "sha256-xLhR9zReaQ4O2ka8SJh6KOEvcoWm/fs+gC7PtRNQtTw=";
+    buildTypesAiobotocorePackage "acm-pca" "2.15.1"
+      "sha256-JSvY8qqA91SUMXs7ajfVQ6wZFNHc2XisO2haiygJg8o=";
 
   types-aiobotocore-alexaforbusiness =
     buildTypesAiobotocorePackage "alexaforbusiness" "2.13.0"
       "sha256-+w/InoQR2aZ5prieGhgEEp7auBiSSghG5zIIHY5Kyao=";
 
   types-aiobotocore-amp =
-    buildTypesAiobotocorePackage "amp" "2.15.0"
-      "sha256-nMLt8ZITr0zwrnG6v12XgpKtuvggXbhCaozMzF6Ng9c=";
+    buildTypesAiobotocorePackage "amp" "2.15.1"
+      "sha256-RJKzIa6b/ov0xpayGBgDVW2DUjIo0xNfDDh2hAvK918=";
 
   types-aiobotocore-amplify =
-    buildTypesAiobotocorePackage "amplify" "2.15.0"
-      "sha256-L4P4YRaKsIJkhDT1aOjEs5NxnnXyZoRSPZbIVI0iCfE=";
+    buildTypesAiobotocorePackage "amplify" "2.15.1"
+      "sha256-TNhrmgAjuJLBLXU2dlp+Ri8pJ+swgjXu1lJFGUnLEfQ=";
 
   types-aiobotocore-amplifybackend =
-    buildTypesAiobotocorePackage "amplifybackend" "2.15.0"
-      "sha256-bgOAbDajiuw3GQ15XRK6QJoSc+RwjQY1sZt+lLhGONA=";
+    buildTypesAiobotocorePackage "amplifybackend" "2.15.1"
+      "sha256-T2mqIUobrEepz6vS/VLWq8OpUZTYRMme0SgWv+UtxmQ=";
 
   types-aiobotocore-amplifyuibuilder =
-    buildTypesAiobotocorePackage "amplifyuibuilder" "2.15.0"
-      "sha256-N4OTBb2LW3JFJLzE6OeDPAzpjUcSlwPEVezaVelE++o=";
+    buildTypesAiobotocorePackage "amplifyuibuilder" "2.15.1"
+      "sha256-oFgte9lbXb9IM3Ezn0Jmd5djrLwgJLqeDePdBb5OZrI=";
 
   types-aiobotocore-apigateway =
-    buildTypesAiobotocorePackage "apigateway" "2.15.0"
-      "sha256-B+QNyR9jyv1+SKTj0fq6qlq1vwQ5yxhf9yvkIjc+AWA=";
+    buildTypesAiobotocorePackage "apigateway" "2.15.1"
+      "sha256-3gDSD6Z28yicogEeDv2i/rcmh7X9nRWrwxRL0YFZIpc=";
 
   types-aiobotocore-apigatewaymanagementapi =
-    buildTypesAiobotocorePackage "apigatewaymanagementapi" "2.15.0"
-      "sha256-cNIPbJvmZltZ089CfkfxenyTtJUC/+ETCyEDDlzwLOg=";
+    buildTypesAiobotocorePackage "apigatewaymanagementapi" "2.15.1"
+      "sha256-3NC66/pp4F8GsH40z0mBoaLqIKyPHGpgEAGgOnOOAGI=";
 
   types-aiobotocore-apigatewayv2 =
-    buildTypesAiobotocorePackage "apigatewayv2" "2.15.0"
-      "sha256-PfwYm2wklpMZdH/DXKOMlOmozwl8PWY/dnGKZ+vDHVM=";
+    buildTypesAiobotocorePackage "apigatewayv2" "2.15.1"
+      "sha256-qsiFXNECUVFDrreYOi2MLa655WAECXuPqi11z8liVN4=";
 
   types-aiobotocore-appconfig =
-    buildTypesAiobotocorePackage "appconfig" "2.15.0"
-      "sha256-jhXyfuEWN+hc9R3K2zU5DeiIPuz7Gl9GxQBs1VecCZo=";
+    buildTypesAiobotocorePackage "appconfig" "2.15.1"
+      "sha256-QPhmF5urmZBb+e7KAIJihDujuDAopgQqrBspAxD6YJ4=";
 
   types-aiobotocore-appconfigdata =
-    buildTypesAiobotocorePackage "appconfigdata" "2.15.0"
-      "sha256-rLhZ4JpFtHlBfWgaRl1Y1BkGdy3L0pIK52zni/Jd1UU=";
+    buildTypesAiobotocorePackage "appconfigdata" "2.15.1"
+      "sha256-1rQCSuTShglGMwqcxiVULSbmgzpUZmubTgqlum5EeqE=";
 
   types-aiobotocore-appfabric =
-    buildTypesAiobotocorePackage "appfabric" "2.15.0"
-      "sha256-PtAaUmLoCVRs2UFarVzJSdMjftYrRz4pjb7nraMIAys=";
+    buildTypesAiobotocorePackage "appfabric" "2.15.1"
+      "sha256-l/dJepTAEpsV3eJWzMbw43SrqgWuL1I3IVlVQQzZPSM=";
 
   types-aiobotocore-appflow =
-    buildTypesAiobotocorePackage "appflow" "2.15.0"
-      "sha256-Yz7cnhD8peXaYwC4sLbAcjsQFDWWnq4VZKTAOJ3M5YA=";
+    buildTypesAiobotocorePackage "appflow" "2.15.1"
+      "sha256-v30RZvCTHOMxsypX+Id5W7VEPC4QFYvRklPu9zaJ9x4=";
 
   types-aiobotocore-appintegrations =
-    buildTypesAiobotocorePackage "appintegrations" "2.15.0"
-      "sha256-azLPzqojFnj11d8Hw45c+VuZgG/J3KGUhOYD+R7ZwK8=";
+    buildTypesAiobotocorePackage "appintegrations" "2.15.1"
+      "sha256-ceiFklxI0RK06gj2ZQcvpGyW903SOxXA654MzRy3A7U=";
 
   types-aiobotocore-application-autoscaling =
-    buildTypesAiobotocorePackage "application-autoscaling" "2.15.0"
-      "sha256-NvY9zOt9xDFh0XgUSyAQ1obzttIj8BXOa8qBWjJ/VLs=";
+    buildTypesAiobotocorePackage "application-autoscaling" "2.15.1"
+      "sha256-P9XULdNPREbu2xksZXIIxZUEggYlU3j0Jo7RzFKMawk=";
 
   types-aiobotocore-application-insights =
-    buildTypesAiobotocorePackage "application-insights" "2.15.0"
-      "sha256-g4NHKgSExk9Xb6xmNm8kTdrWP473KN+AHs1vw9l6yL0=";
+    buildTypesAiobotocorePackage "application-insights" "2.15.1"
+      "sha256-nvNJsUkMwJd41vlj7pKEn37f1Ab4l4WAJbYGqfxCmZw=";
 
   types-aiobotocore-applicationcostprofiler =
-    buildTypesAiobotocorePackage "applicationcostprofiler" "2.15.0"
-      "sha256-AZG2e70N6u+tYQF9rsxG/kCO/fCJiBtvmdaSQvEwLLo=";
+    buildTypesAiobotocorePackage "applicationcostprofiler" "2.15.1"
+      "sha256-/rMS/1K9dGzW89Rzd6sg9o/L56kNAO0bkDUTNKsKxxI=";
 
   types-aiobotocore-appmesh =
-    buildTypesAiobotocorePackage "appmesh" "2.15.0"
-      "sha256-Qn/Nw8OnHixSWzjJPxN2T7B8mzscpDdBNgjNrefOgmM=";
+    buildTypesAiobotocorePackage "appmesh" "2.15.1"
+      "sha256-yPEPmU3CVzddnsFd2CQp+eAji1+/bH/Vvhv6D2JbjvM=";
 
   types-aiobotocore-apprunner =
-    buildTypesAiobotocorePackage "apprunner" "2.15.0"
-      "sha256-rjBxiphEQxs5/OZVEPDM45YIivDCrjVkkK4bLbUgvDM=";
+    buildTypesAiobotocorePackage "apprunner" "2.15.1"
+      "sha256-gzzXHrMC0MF9RykwGmZiUtgufuRPrmGekVicXzdlFw8=";
 
   types-aiobotocore-appstream =
-    buildTypesAiobotocorePackage "appstream" "2.15.0"
-      "sha256-tlmIQ+6d7lNhZiDtSiF6SodUtwLTJJkJSofMb5YUW1Q=";
+    buildTypesAiobotocorePackage "appstream" "2.15.1"
+      "sha256-qbiOK2G95NdBTt1AmrQsDJbz885ugrdRBXMb9ZQcssE=";
 
   types-aiobotocore-appsync =
-    buildTypesAiobotocorePackage "appsync" "2.15.0"
-      "sha256-kR3BQccO7l3TixcVmDOVu41t5gJPBpFedgk5uPLuDxU=";
+    buildTypesAiobotocorePackage "appsync" "2.15.1"
+      "sha256-WYgJ2GLOxy/Va+ZY7DwwX7pBFF4zv1iQ8rptFoOlFsA=";
 
   types-aiobotocore-arc-zonal-shift =
-    buildTypesAiobotocorePackage "arc-zonal-shift" "2.15.0"
-      "sha256-o9pDedTVsRr98GZwtFbfFwKZwOA0e4zseGSFtlBEsLQ=";
+    buildTypesAiobotocorePackage "arc-zonal-shift" "2.15.1"
+      "sha256-9lToTikNN5kH9TCGSeQDnm6g2iM+1OGbtSpN4f6M7FM=";
 
   types-aiobotocore-athena =
-    buildTypesAiobotocorePackage "athena" "2.15.0"
-      "sha256-AgWHakNCla5JY6zz0rWLwkorVESJCvQG6jhT1OFRNUY=";
+    buildTypesAiobotocorePackage "athena" "2.15.1"
+      "sha256-8NEZDefM/mP11YPnOCn11QfbWAMaCB5Yh2R9zQRtPpw=";
 
   types-aiobotocore-auditmanager =
-    buildTypesAiobotocorePackage "auditmanager" "2.15.0"
-      "sha256-U5ir/tSKwIAIF2TVJ66L1utVyh9cscc7z2VyrcsrGoI=";
+    buildTypesAiobotocorePackage "auditmanager" "2.15.1"
+      "sha256-JU7s8pqfJQptll0Kh3KPDeFULM2cga0nYZSvhLk2ul4=";
 
   types-aiobotocore-autoscaling =
-    buildTypesAiobotocorePackage "autoscaling" "2.15.0"
-      "sha256-7ZKRN/IlUrNvFgeuGbo242Di4eyIDr9/5tJsHrgcspg=";
+    buildTypesAiobotocorePackage "autoscaling" "2.15.1"
+      "sha256-PddQSNJ9KNGL8LQDD82+IeD4cVCR7huBkSWTqbYQfUk=";
 
   types-aiobotocore-autoscaling-plans =
-    buildTypesAiobotocorePackage "autoscaling-plans" "2.15.0"
-      "sha256-Va74FcUxerO1nEtm6AiWbaw8zVHDkrdsfq3fBlznM7k=";
+    buildTypesAiobotocorePackage "autoscaling-plans" "2.15.1"
+      "sha256-hUEFUNC1WdPpdu+9AQFWLvFhvBrmy3Xg7Xl4LlB4z6k=";
 
   types-aiobotocore-backup =
-    buildTypesAiobotocorePackage "backup" "2.15.0"
-      "sha256-9k/3D58OtYwyGl/B9wepaNbj6vgxzqc9E96Tp5+qSVU=";
+    buildTypesAiobotocorePackage "backup" "2.15.1"
+      "sha256-E8LmUYpLqVF0WooWUXtqv4nhst1o050tx3/sRDBhd+w=";
 
   types-aiobotocore-backup-gateway =
-    buildTypesAiobotocorePackage "backup-gateway" "2.15.0"
-      "sha256-pp75wX3UeV4U7UChs3EyanPom1UD6RCYdYfVmN21MjM=";
+    buildTypesAiobotocorePackage "backup-gateway" "2.15.1"
+      "sha256-Yx/e2UIEzn47L4mQ61S0PkHBuDbz7uqc5yIw/6XrBkI=";
 
   types-aiobotocore-backupstorage =
     buildTypesAiobotocorePackage "backupstorage" "2.13.0"
       "sha256-YUKtBdBrdwL2yqDqOovvzDPbcv/sD8JLRnKz3Oh7iSU=";
 
   types-aiobotocore-batch =
-    buildTypesAiobotocorePackage "batch" "2.15.0"
-      "sha256-vbZk1mR45gdhLVtdZTi0ZG6I72ttUwHqFAuXc4TW8o8=";
+    buildTypesAiobotocorePackage "batch" "2.15.1"
+      "sha256-vZJddKOLsljDKP4WrUDZrc4hkk01FtN3wL8MXKpfuII=";
 
   types-aiobotocore-billingconductor =
-    buildTypesAiobotocorePackage "billingconductor" "2.15.0"
-      "sha256-mtbJipKOB82AHWrRAfNFUgHTwNtqiU/NSn9F6eLcqok=";
+    buildTypesAiobotocorePackage "billingconductor" "2.15.1"
+      "sha256-sbgwQEs21yd+xl2AuEiYEzc0Lgx7Uo/Ctibd2SEHY0c=";
 
   types-aiobotocore-braket =
-    buildTypesAiobotocorePackage "braket" "2.15.0"
-      "sha256-Hu8DNQCusy3HR5NNptB4Rwuhu3m9lcqTgR7HnZMjtwA=";
+    buildTypesAiobotocorePackage "braket" "2.15.1"
+      "sha256-CThsP2a03VbAIFr4x2x0L2fLgIxvqFV1MuMLp1eoo6A=";
 
   types-aiobotocore-budgets =
-    buildTypesAiobotocorePackage "budgets" "2.15.0"
-      "sha256-E8f8+ONZep2G/BoOSinere9SIMetZHNK+FpmfJZtXxY=";
+    buildTypesAiobotocorePackage "budgets" "2.15.1"
+      "sha256-b1M6ZdlrG/AM3h5iM/mMAW7SrwrjApF/K0kgbFpAM14=";
 
   types-aiobotocore-ce =
-    buildTypesAiobotocorePackage "ce" "2.15.0"
-      "sha256-8FK+wf201DspWWW338aad19mh84tEqI84GqKE9zclyA=";
+    buildTypesAiobotocorePackage "ce" "2.15.1"
+      "sha256-MV6dma7+hf1ITv3HJ4cJZyfpimMT5MBuspTCEjMix7I=";
 
   types-aiobotocore-chime =
-    buildTypesAiobotocorePackage "chime" "2.15.0"
-      "sha256-mAgx2hqP0zIvMIdAlyqD6A9HVZ0l/CKDj1lAvsDP/60=";
+    buildTypesAiobotocorePackage "chime" "2.15.1"
+      "sha256-24ukZo0shYVOz0HlrIj0g/xsfKz48fZHlUqcuTFvSoE=";
 
   types-aiobotocore-chime-sdk-identity =
-    buildTypesAiobotocorePackage "chime-sdk-identity" "2.15.0"
-      "sha256-aY7LS0tEdBVxPwUIrR10ukCybglu1iQIyohNkMHrD4I=";
+    buildTypesAiobotocorePackage "chime-sdk-identity" "2.15.1"
+      "sha256-/R22nTYf7XQBH9u8R10jHqHA4+s2iliX5+pFUyWdaG0=";
 
   types-aiobotocore-chime-sdk-media-pipelines =
-    buildTypesAiobotocorePackage "chime-sdk-media-pipelines" "2.15.0"
-      "sha256-34bU9wxdytAbTYBGM4/sfAn1tYtYLEc2dpUN+t4RtP4=";
+    buildTypesAiobotocorePackage "chime-sdk-media-pipelines" "2.15.1"
+      "sha256-UGogN6rRabJuNokJPeQUol9DOMBbc/pkPL+lRg5GYk0=";
 
   types-aiobotocore-chime-sdk-meetings =
-    buildTypesAiobotocorePackage "chime-sdk-meetings" "2.15.0"
-      "sha256-X6YpdEVXPHsvDjptcowPEs71b6iVHO5s80VmO8yEG0o=";
+    buildTypesAiobotocorePackage "chime-sdk-meetings" "2.15.1"
+      "sha256-EDQ5H7R5U9AQnLy2rkRzSSAkFVzfZiWCqlLqP24wv2g=";
 
   types-aiobotocore-chime-sdk-messaging =
-    buildTypesAiobotocorePackage "chime-sdk-messaging" "2.15.0"
-      "sha256-6CI5unJa7Ba1agD41zvcg7hi76D5j34NF5WlPAzkZiY=";
+    buildTypesAiobotocorePackage "chime-sdk-messaging" "2.15.1"
+      "sha256-7iJ+npfPI64WtlKYPLQUkJsJvhjSKCDbYBWWrv5dHwo=";
 
   types-aiobotocore-chime-sdk-voice =
-    buildTypesAiobotocorePackage "chime-sdk-voice" "2.15.0"
-      "sha256-Qz3MHsRX3k9pxSZAltP3CrwFB3jcdNQkVok3jAUbXa8=";
+    buildTypesAiobotocorePackage "chime-sdk-voice" "2.15.1"
+      "sha256-BCj6/x6lnNdUx/FjP8mLzv7zLukjwDQw2/tWrFSuU0A=";
 
   types-aiobotocore-cleanrooms =
-    buildTypesAiobotocorePackage "cleanrooms" "2.15.0"
-      "sha256-d+cISH+Wz1tnTh3hl1V0VLmHAirfi5puzLE1llIb6SY=";
+    buildTypesAiobotocorePackage "cleanrooms" "2.15.1"
+      "sha256-GbRu1vn7S1bILtKKf75+bR4y7OYQ6WnlUVt0HQqr/8s=";
 
   types-aiobotocore-cloud9 =
-    buildTypesAiobotocorePackage "cloud9" "2.15.0"
-      "sha256-4+/5CcjgXH4O2LXpOUbDNXC2xMnVzU9e4eY0n6tA39I=";
+    buildTypesAiobotocorePackage "cloud9" "2.15.1"
+      "sha256-7r/W5Hbv4J58aqpedt3ehe3E99U74sFiMHo5YnIPvh8=";
 
   types-aiobotocore-cloudcontrol =
-    buildTypesAiobotocorePackage "cloudcontrol" "2.15.0"
-      "sha256-5yjSbImILBpPJrwJUabP/z37yocdAtASsS0sSfJq69Q=";
+    buildTypesAiobotocorePackage "cloudcontrol" "2.15.1"
+      "sha256-TwBEzvuYmKyL5Bx2VCZwK0przb4MWhDVqOfl1RF3uog=";
 
   types-aiobotocore-clouddirectory =
-    buildTypesAiobotocorePackage "clouddirectory" "2.15.0"
-      "sha256-0+bbLpb+IIfgPFd2mltYjgDhV94hmD9nBHu+kOFPRbs=";
+    buildTypesAiobotocorePackage "clouddirectory" "2.15.1"
+      "sha256-ApxmZb2xwj0Leynjqi5YC4stEt0qcWQoSq3HffbvL3k=";
 
   types-aiobotocore-cloudformation =
-    buildTypesAiobotocorePackage "cloudformation" "2.15.0"
-      "sha256-KV6YLm057AqItUSfZmlMro41bvzyWitf64KXh/S78BM=";
+    buildTypesAiobotocorePackage "cloudformation" "2.15.1"
+      "sha256-ngI/9VlHFOpAjcXi04JX+MVEdjs1cxC2UT+9MQTblGo=";
 
   types-aiobotocore-cloudfront =
-    buildTypesAiobotocorePackage "cloudfront" "2.15.0"
-      "sha256-G1vjQh+/51KC5GLbqu8id0vIMcllM6e249ibRWIc+50=";
+    buildTypesAiobotocorePackage "cloudfront" "2.15.1"
+      "sha256-+y931CL0UdxZd5dnkSkNBAOmyuXqSb9XdIwQUKoXDTQ=";
 
   types-aiobotocore-cloudhsm =
-    buildTypesAiobotocorePackage "cloudhsm" "2.15.0"
-      "sha256-zFlLFb3Kg+n4aK0laLFxbyqBh5ljI9q38Hh+tK/9o3Q=";
+    buildTypesAiobotocorePackage "cloudhsm" "2.15.1"
+      "sha256-Mv6fm2JLK4QVL1dTlVCIM1TaehUSlXTBATHvXHO26uM=";
 
   types-aiobotocore-cloudhsmv2 =
-    buildTypesAiobotocorePackage "cloudhsmv2" "2.15.0"
-      "sha256-VkQmIJDWE+9VksOnEyLtktWOfNgRRw76zqr8xM7TM40=";
+    buildTypesAiobotocorePackage "cloudhsmv2" "2.15.1"
+      "sha256-9koftVpoxrFkg/WWYoLZPEf1nnWxqwEeAzeMIJB+n8A=";
 
   types-aiobotocore-cloudsearch =
-    buildTypesAiobotocorePackage "cloudsearch" "2.15.0"
-      "sha256-56M9O04QpzTvwBM6kTBlq/xlKulSye55n2yTqjibAhM=";
+    buildTypesAiobotocorePackage "cloudsearch" "2.15.1"
+      "sha256-1s+EM9O5Hfsa0qKK+HFrif2dH+C7+V51MkqvuKeYwyw=";
 
   types-aiobotocore-cloudsearchdomain =
-    buildTypesAiobotocorePackage "cloudsearchdomain" "2.15.0"
-      "sha256-c2MkpaPyF+fpbQMMC2UvP8HvWOxXz1zoKlmy8mWihKg=";
+    buildTypesAiobotocorePackage "cloudsearchdomain" "2.15.1"
+      "sha256-lDC8Za+QGc622FVrsNKPCuitYzU521BC20g7ZGUZMAI=";
 
   types-aiobotocore-cloudtrail =
-    buildTypesAiobotocorePackage "cloudtrail" "2.15.0"
-      "sha256-3oPEyW12otLcBEs3PM4ySpx8REN1XbOveu/H3/tMlyk=";
+    buildTypesAiobotocorePackage "cloudtrail" "2.15.1"
+      "sha256-911ynsQTCCv9kd4TgeWR5Hv8ulz/kCnYxnw9PWk41IY=";
 
   types-aiobotocore-cloudtrail-data =
-    buildTypesAiobotocorePackage "cloudtrail-data" "2.15.0"
-      "sha256-jwYk+AdycgvN5G26/e4E6xTvXqhSau5uXHOdn8QOz4A=";
+    buildTypesAiobotocorePackage "cloudtrail-data" "2.15.1"
+      "sha256-dh/wbIJ6VTU8++QGXa/IDUCcGpdzBB4jfaizyn9jfyo=";
 
   types-aiobotocore-cloudwatch =
-    buildTypesAiobotocorePackage "cloudwatch" "2.15.0"
-      "sha256-tSEIoJJZ3Qkta6R7urcY6o0Zmh/inayk9TFmWDtBxrI=";
+    buildTypesAiobotocorePackage "cloudwatch" "2.15.1"
+      "sha256-nnyLWvv9esKWKlyZs9j+hUHTCBs55qC8PX5st0OHBxg=";
 
   types-aiobotocore-codeartifact =
-    buildTypesAiobotocorePackage "codeartifact" "2.15.0"
-      "sha256-Uh628mId25sRK5C1RiFFUhnm3gwoAOn1qBiYFEZawiQ=";
+    buildTypesAiobotocorePackage "codeartifact" "2.15.1"
+      "sha256-f8xrPRkEOrw1fFI/q0U//LjzDCymhPOBpqrGPas5te4=";
 
   types-aiobotocore-codebuild =
-    buildTypesAiobotocorePackage "codebuild" "2.15.0"
-      "sha256-Vpmwx9NLkvW8//lwYbuNn4oCuTGlOzW6ALQvkNw3zjk=";
+    buildTypesAiobotocorePackage "codebuild" "2.15.1"
+      "sha256-9lTVbw1mtKgIiDsI7pc2Lmd7W/1OjMBZtvWTL1mNqxM=";
 
   types-aiobotocore-codecatalyst =
-    buildTypesAiobotocorePackage "codecatalyst" "2.15.0"
-      "sha256-hLZYCwF1SvMp2Pmhg14E/I0QmkFHdBivYL4zwbeozAc=";
+    buildTypesAiobotocorePackage "codecatalyst" "2.15.1"
+      "sha256-hEASqSTOFl8Pc+qBZ0Xqf36JivPVgHbZ2yZszo5Z9Uo=";
 
   types-aiobotocore-codecommit =
-    buildTypesAiobotocorePackage "codecommit" "2.15.0"
-      "sha256-ChHQF79gsoOzTA8Gzg3e7U4DRW24PsP2joi7haolI5U=";
+    buildTypesAiobotocorePackage "codecommit" "2.15.1"
+      "sha256-1L7UGZNkl89ULZV5LiajDZxQmLpelTsjNSvUzUzwk+I=";
 
   types-aiobotocore-codedeploy =
-    buildTypesAiobotocorePackage "codedeploy" "2.15.0"
-      "sha256-CldfAcuTTh8Xf1alyNDfEaJb+7wOLhQKg+S4GrnhPT4=";
+    buildTypesAiobotocorePackage "codedeploy" "2.15.1"
+      "sha256-HaO/GSX14cKdKlwYmowzgWPfTDrUXyiyNlhz23lPyT8=";
 
   types-aiobotocore-codeguru-reviewer =
-    buildTypesAiobotocorePackage "codeguru-reviewer" "2.15.0"
-      "sha256-I2WeTiUX7skEx1Ow8VQjsyBFk0ibYVqjM0SQwd+Djok=";
+    buildTypesAiobotocorePackage "codeguru-reviewer" "2.15.1"
+      "sha256-0vNZTr6RNUv2TjQJ9GZIwe6jTFJH1KgJW82fVERSFIw=";
 
   types-aiobotocore-codeguru-security =
-    buildTypesAiobotocorePackage "codeguru-security" "2.15.0"
-      "sha256-yF6I+I+KPEVXogQ4kON3OUq+G+DmxaIwykJm521Lw1I=";
+    buildTypesAiobotocorePackage "codeguru-security" "2.15.1"
+      "sha256-Mk5xbw1OhHcBDhohKu7emIz7c4BkxFA+LRtHrLL/LoQ=";
 
   types-aiobotocore-codeguruprofiler =
-    buildTypesAiobotocorePackage "codeguruprofiler" "2.15.0"
-      "sha256-/eRwr2fqu4i17bt9mG7Ffwh/QKBt8cx4T1IehPZNbc4=";
+    buildTypesAiobotocorePackage "codeguruprofiler" "2.15.1"
+      "sha256-i/a6O3B69uPMsJsjW2hxMdLm/q2nvRwTlcpvqg0zcnQ=";
 
   types-aiobotocore-codepipeline =
-    buildTypesAiobotocorePackage "codepipeline" "2.15.0"
-      "sha256-i1HlE4mnLkBcbH9BlEUiMswVoDvdFqkA2db/ONYTs9o=";
+    buildTypesAiobotocorePackage "codepipeline" "2.15.1"
+      "sha256-2i5cZ7cCy0zt71bTmAZHPCKR8GVutVR2TXeGJIlTQ54=";
 
   types-aiobotocore-codestar =
     buildTypesAiobotocorePackage "codestar" "2.13.3"
       "sha256-Z1ewx2RjmxbOQZ7wXaN54PVOuRs6LP3rMpsrVTacwjo=";
 
   types-aiobotocore-codestar-connections =
-    buildTypesAiobotocorePackage "codestar-connections" "2.15.0"
-      "sha256-ksiIt34O0vVOmlaSZjfPugnYUQDzUj9go5hIOknyvHM=";
+    buildTypesAiobotocorePackage "codestar-connections" "2.15.1"
+      "sha256-Qcz4JHpT34WKY0+/CRDavwiI99GCwxA/SBftb6Wi9J0=";
 
   types-aiobotocore-codestar-notifications =
-    buildTypesAiobotocorePackage "codestar-notifications" "2.15.0"
-      "sha256-vbNr4u4HAHEUaXyUruJtNRk1urlJ6W7yUJrS6ULE+2s=";
+    buildTypesAiobotocorePackage "codestar-notifications" "2.15.1"
+      "sha256-qdVJ+6ELs5YKqIV/26Ar2FW4KC3DGofHJ/+xo5xzT3M=";
 
   types-aiobotocore-cognito-identity =
-    buildTypesAiobotocorePackage "cognito-identity" "2.15.0"
-      "sha256-uFRD5fzIN11WLtR6KQ10IKxWpzf/Lr2q5VHHdC++h5U=";
+    buildTypesAiobotocorePackage "cognito-identity" "2.15.1"
+      "sha256-wlpdAHtWZd1l8jYduPT0Dc0LIWxOiiA05uXTpL8fQWo=";
 
   types-aiobotocore-cognito-idp =
-    buildTypesAiobotocorePackage "cognito-idp" "2.15.0"
-      "sha256-Yz1fDkWhQCsDN0I/KE8mkmKsVG+pzRMbyOighcdE+68=";
+    buildTypesAiobotocorePackage "cognito-idp" "2.15.1"
+      "sha256-zpuLoNTgcbYQJ0DF52qoPVm7nspMiITQczoREaCtlCI=";
 
   types-aiobotocore-cognito-sync =
-    buildTypesAiobotocorePackage "cognito-sync" "2.15.0"
-      "sha256-IAbAdXXV/qBLu4g4sxbk8PAlJ61fL1788sKrOCAPoyA=";
+    buildTypesAiobotocorePackage "cognito-sync" "2.15.1"
+      "sha256-XYPt1jgk+BEjDpNH2XHNf0hoOwzewoxqxy+2qjv2dMw=";
 
   types-aiobotocore-comprehend =
-    buildTypesAiobotocorePackage "comprehend" "2.15.0"
-      "sha256-o78Qq1eZTT/+3oSdpDMFGT3VcRr3BUgTHIEv9U6zsaw=";
+    buildTypesAiobotocorePackage "comprehend" "2.15.1"
+      "sha256-XbQ3BYHXGNb4aKFo+WegaZ8613FiVRdthZ0zU7borjQ=";
 
   types-aiobotocore-comprehendmedical =
-    buildTypesAiobotocorePackage "comprehendmedical" "2.15.0"
-      "sha256-cdmbnC12r0nzgqHt9MZsB8z34Gh1wLr7pressaGNdok=";
+    buildTypesAiobotocorePackage "comprehendmedical" "2.15.1"
+      "sha256-3cifXhAhIxxZVRdE0Pt3SmaWwoj75iIpp6ThnLeL+BM=";
 
   types-aiobotocore-compute-optimizer =
-    buildTypesAiobotocorePackage "compute-optimizer" "2.15.0"
-      "sha256-OiZkYLcHvGfgrAAG/g2DI7OfTXuowz9U9vgYnUnQ5LY=";
+    buildTypesAiobotocorePackage "compute-optimizer" "2.15.1"
+      "sha256-8awRuy2iD9mYSuLaMrbpu0bZ1HlY9kIrF4/ZY7kECbQ=";
 
   types-aiobotocore-config =
-    buildTypesAiobotocorePackage "config" "2.15.0"
-      "sha256-t4TXmT50janvS0/t4x7a1Kugx+spLVtdhYXk0tbW7IA=";
+    buildTypesAiobotocorePackage "config" "2.15.1"
+      "sha256-n8RP98EO8AB0a3zqKlc7TZBttT7bHRV2EFYBy999q4g=";
 
   types-aiobotocore-connect =
-    buildTypesAiobotocorePackage "connect" "2.15.0"
-      "sha256-sqLlspZPLtilYBBOQtHV5YT3IZ2BJCenD2r8D8JUva0=";
+    buildTypesAiobotocorePackage "connect" "2.15.1"
+      "sha256-9AfqyTav6mIPiBrMGP6Rh+ytAS92LdLg/4VdTaSKB6I=";
 
   types-aiobotocore-connect-contact-lens =
-    buildTypesAiobotocorePackage "connect-contact-lens" "2.15.0"
-      "sha256-B2MqOOHJs3cHIuPKPJPdGsw/htwbTdqhF3vX2ErhSUs=";
+    buildTypesAiobotocorePackage "connect-contact-lens" "2.15.1"
+      "sha256-qTq+tsvlPDq9LDTNgZuwa1zva17PDm1zBMnDX5nLR1g=";
 
   types-aiobotocore-connectcampaigns =
-    buildTypesAiobotocorePackage "connectcampaigns" "2.15.0"
-      "sha256-ILLDJbAD7jQdyUop5NzZA5YOzCvDLS5DwjRaPqiHFZc=";
+    buildTypesAiobotocorePackage "connectcampaigns" "2.15.1"
+      "sha256-kIF+sS4RpsmhiuttzwFViHaOLZ5B69O//hwEYGrMfr8=";
 
   types-aiobotocore-connectcases =
-    buildTypesAiobotocorePackage "connectcases" "2.15.0"
-      "sha256-XM58yx4FP5mfVcdXpGOCXk3HrYbhiPbKhFLYMjKJfjE=";
+    buildTypesAiobotocorePackage "connectcases" "2.15.1"
+      "sha256-hTUDhtsv5KWOiM9jYrT4/IW+GmnCmWnhMZpoQIClQ3k=";
 
   types-aiobotocore-connectparticipant =
-    buildTypesAiobotocorePackage "connectparticipant" "2.15.0"
-      "sha256-nEouxJuZHsnNuIXSFpW1r5eWp7wiM525jaqkrHKy27o=";
+    buildTypesAiobotocorePackage "connectparticipant" "2.15.1"
+      "sha256-ffSs8Z/TQatJDUKmjdclI5DYMf5/EI/uEi8r4EnKFds=";
 
   types-aiobotocore-controltower =
-    buildTypesAiobotocorePackage "controltower" "2.15.0"
-      "sha256-pI3tNm75uKX9qYGq0wdINP/ikm1Q11Y2Y+buuSUhMqU=";
+    buildTypesAiobotocorePackage "controltower" "2.15.1"
+      "sha256-5Sa+K+DTpM2YwTfhlufD9MxTk4pv+K1wE9PYKM1zAxw=";
 
   types-aiobotocore-cur =
-    buildTypesAiobotocorePackage "cur" "2.15.0"
-      "sha256-YE6vdELZULQU8zYRFd97IEWw+guKLJM24VhxRjbCHNk=";
+    buildTypesAiobotocorePackage "cur" "2.15.1"
+      "sha256-NfY/cGT+ft8bWitgYHbySblXNdYj/c/4p5jr2yOs5+c=";
 
   types-aiobotocore-customer-profiles =
-    buildTypesAiobotocorePackage "customer-profiles" "2.15.0"
-      "sha256-Gq+W7nn4AaMd51nYd0uzDfDNWqMsqwYTBR8JA63NCtI=";
+    buildTypesAiobotocorePackage "customer-profiles" "2.15.1"
+      "sha256-fQONh48vGKkr+ICjI3EqKW+jNXH/DSm0a96pTf4JQmk=";
 
   types-aiobotocore-databrew =
-    buildTypesAiobotocorePackage "databrew" "2.15.0"
-      "sha256-cKk8cRR2XcMCIbBeg9g2Zgwun5/RRNQaiAKoIv8WvEk=";
+    buildTypesAiobotocorePackage "databrew" "2.15.1"
+      "sha256-DNayl61Eorza7nIjjbxbFzs+lIN3oUwpDIImJEMHX7Y=";
 
   types-aiobotocore-dataexchange =
-    buildTypesAiobotocorePackage "dataexchange" "2.15.0"
-      "sha256-0ZZcNnUh2X/K7t65yy0CJS7JDNqn//a/CEn/ujyBpjU=";
+    buildTypesAiobotocorePackage "dataexchange" "2.15.1"
+      "sha256-v9bq7ub+8q2NrZtaqWqQh2MSKoGfDBdTVW1qKTSooug=";
 
   types-aiobotocore-datapipeline =
-    buildTypesAiobotocorePackage "datapipeline" "2.15.0"
-      "sha256-DeudpMd35JzfAn2Oi9J8IQdLzoL82YqUAP1sfJV2Mes=";
+    buildTypesAiobotocorePackage "datapipeline" "2.15.1"
+      "sha256-9hBxeCltGrxtMGuTKTwVp/aHHccnfDKuI0QXv50uKNA=";
 
   types-aiobotocore-datasync =
-    buildTypesAiobotocorePackage "datasync" "2.15.0"
-      "sha256-E3SzICSZSRfKzcyUs1pXzg+jrAC6YX6S4FVUp6bqjqI=";
+    buildTypesAiobotocorePackage "datasync" "2.15.1"
+      "sha256-z7t65Ioz0NtiToPkTIbYcBjWlJg1rcTIj0u/qmPkhMA=";
 
   types-aiobotocore-dax =
-    buildTypesAiobotocorePackage "dax" "2.15.0"
-      "sha256-CShLLvZXv9Wl2ipx7Yo/9EZgFd8xC51rTn+3s5IQtJs=";
+    buildTypesAiobotocorePackage "dax" "2.15.1"
+      "sha256-/NyvlFx8/nOWClB3ZPqTt67yGN2ssYojWukw0S3v274=";
 
   types-aiobotocore-detective =
-    buildTypesAiobotocorePackage "detective" "2.15.0"
-      "sha256-1JpQFNtq/ER6zmTYo1glMgxKVz4ctYwQa3cm69otc14=";
+    buildTypesAiobotocorePackage "detective" "2.15.1"
+      "sha256-DWf6HTvFyMYRiOLQrawp5GwhXniNS9mhwPNyprCYrt0=";
 
   types-aiobotocore-devicefarm =
-    buildTypesAiobotocorePackage "devicefarm" "2.15.0"
-      "sha256-tRLyH18/lVx4skaoAk73cd2lE6sBJ+d8DMUaHxXIVkg=";
+    buildTypesAiobotocorePackage "devicefarm" "2.15.1"
+      "sha256-05IkwZCPZvQGkRya7TdN1huFpMxuR1zxB+b8JSFI/oM=";
 
   types-aiobotocore-devops-guru =
-    buildTypesAiobotocorePackage "devops-guru" "2.15.0"
-      "sha256-2Bv8N9q/i0WFB+F8Xu8BQZ7ws+7yJa7qgjaE7X1dQB0=";
+    buildTypesAiobotocorePackage "devops-guru" "2.15.1"
+      "sha256-n62US1ENdO1MFljx5zeLx+LblbiJyxefhN2+nlxu2GA=";
 
   types-aiobotocore-directconnect =
-    buildTypesAiobotocorePackage "directconnect" "2.15.0"
-      "sha256-hY2hLmFtlsggdE6gyQ9lwjTjfkgfaGvWudSPcTy18NU=";
+    buildTypesAiobotocorePackage "directconnect" "2.15.1"
+      "sha256-knhkLyC1uPX4KjiFcgFf9ys2hCz38++q55nbnUM3n/Q=";
 
   types-aiobotocore-discovery =
-    buildTypesAiobotocorePackage "discovery" "2.15.0"
-      "sha256-RnQoddR4qXiAItydDAFBTOkEsBg+DHolqqdHyfCTqXM=";
+    buildTypesAiobotocorePackage "discovery" "2.15.1"
+      "sha256-JG/1ZQ9cSCMzqF6CVTIu7EIm0ORbLn3gM8gcCCSRhsQ=";
 
   types-aiobotocore-dlm =
-    buildTypesAiobotocorePackage "dlm" "2.15.0"
-      "sha256-/lzVDT2qoK+6PrUozdrSyN7QTcygA7IyUGl7E1K0t4Y=";
+    buildTypesAiobotocorePackage "dlm" "2.15.1"
+      "sha256-Pyi45ZWBuEsb3GoumJkX+c8QnX3J6HobLFqwkm7I0ng=";
 
   types-aiobotocore-dms =
-    buildTypesAiobotocorePackage "dms" "2.15.0"
-      "sha256-9JKz+NHAudWbLGVL5L8fZwoTcom3o7JNFioRNYoVQ0Q=";
+    buildTypesAiobotocorePackage "dms" "2.15.1"
+      "sha256-wius84bAUyldt84o8qUeBSzajkY8mLco85rI4NAIQcc=";
 
   types-aiobotocore-docdb =
-    buildTypesAiobotocorePackage "docdb" "2.15.0"
-      "sha256-ZEdJM8Z7ngpa7LIMyL9+jRi0EL2IRcoG12O+cr2roYU=";
+    buildTypesAiobotocorePackage "docdb" "2.15.1"
+      "sha256-MF8CGeObwgB5LW1o1ynwahm9GZHTvxjlgNXDyFRjpWM=";
 
   types-aiobotocore-docdb-elastic =
-    buildTypesAiobotocorePackage "docdb-elastic" "2.15.0"
-      "sha256-kKf2pjIGoGuO/V/LjIDBPF+Kv0rhEO0kSCLsJe1npc8=";
+    buildTypesAiobotocorePackage "docdb-elastic" "2.15.1"
+      "sha256-+gyO2dno529rxF5Uj1pyQ0+fH1CJK7LJs/U4WIpRIX4=";
 
   types-aiobotocore-drs =
-    buildTypesAiobotocorePackage "drs" "2.15.0"
-      "sha256-HxY54FJDM6VQuSAB7Qy1PNT9EhPF5z8NXn+m1ICe+aI=";
+    buildTypesAiobotocorePackage "drs" "2.15.1"
+      "sha256-qtMwQ17MpJ0K7zbKr4dyAGWEfHqfM+wXQe22raG/i1E=";
 
   types-aiobotocore-ds =
-    buildTypesAiobotocorePackage "ds" "2.15.0"
-      "sha256-iAq4ovzPUAjfH6DE94F5IJoOXMtLr3MF6b+ITByTE2c=";
+    buildTypesAiobotocorePackage "ds" "2.15.1"
+      "sha256-qU+5PMZqxbskuB/ubXeigzS5t+A5m0WW0e4NVQjFLO4=";
 
   types-aiobotocore-dynamodb =
-    buildTypesAiobotocorePackage "dynamodb" "2.15.0"
-      "sha256-TBiXxLLpyYHslMBCGjPVEOke+7/kj2YcBSMMNpe/d3s=";
+    buildTypesAiobotocorePackage "dynamodb" "2.15.1"
+      "sha256-hQt2Htye+VubSHw+2Iz5E8IgzHGwAwmyYEkNI0br7eU=";
 
   types-aiobotocore-dynamodbstreams =
-    buildTypesAiobotocorePackage "dynamodbstreams" "2.15.0"
-      "sha256-RRg/aabmM+Vl4b3HwafJVrIc/khRLhgVN9uflG8IGi4=";
+    buildTypesAiobotocorePackage "dynamodbstreams" "2.15.1"
+      "sha256-n2NZxFSH9ymucBLagUAaWDgAN4kDsfKqB2W2ir6aEC8=";
 
   types-aiobotocore-ebs =
-    buildTypesAiobotocorePackage "ebs" "2.15.0"
-      "sha256-FGLzilsbA3iCnJLkdeBSYNUPsyzz4N6aNX26MUwGKLE=";
+    buildTypesAiobotocorePackage "ebs" "2.15.1"
+      "sha256-nzm7mnREUd6MEHan4cTc0MaorGo/X+eKbGH1/giG16w=";
 
   types-aiobotocore-ec2 =
-    buildTypesAiobotocorePackage "ec2" "2.15.0"
-      "sha256-FnDRizmCPp39EhGU+c9UKJIFz2ZAMlTOaebcLhLBmlY=";
+    buildTypesAiobotocorePackage "ec2" "2.15.1"
+      "sha256-QzPGQirl2zA5m2yqqXjUC8MIsUDbOg1yl252KJU+Ipc=";
 
   types-aiobotocore-ec2-instance-connect =
-    buildTypesAiobotocorePackage "ec2-instance-connect" "2.15.0"
-      "sha256-3KxMgKPAqCHVxv6a/70ykkJPAc/wFUIe+MxlOURCaHY=";
+    buildTypesAiobotocorePackage "ec2-instance-connect" "2.15.1"
+      "sha256-A5OdqOTax+3/v6GG3IzU771A4l3OXQhqlowknE0DnNU=";
 
   types-aiobotocore-ecr =
-    buildTypesAiobotocorePackage "ecr" "2.15.0"
-      "sha256-+bAe56VT/aSJERPDE7/PuBelT5vJubs2j7mJB0pb5rA=";
+    buildTypesAiobotocorePackage "ecr" "2.15.1"
+      "sha256-3b5SI5qHhvVIa8hqLp/YZu9b3DDpZm5ogRv0I0NuI0Y=";
 
   types-aiobotocore-ecr-public =
-    buildTypesAiobotocorePackage "ecr-public" "2.15.0"
-      "sha256-5WJz1uIp+dbP3qqTCieXJBM9TCOWHPOfVQck1G8BkpY=";
+    buildTypesAiobotocorePackage "ecr-public" "2.15.1"
+      "sha256-enLMc0Vg+RwO3SBzvDd/nKQvNbCllMJMS4BBKGUNWuQ=";
 
   types-aiobotocore-ecs =
-    buildTypesAiobotocorePackage "ecs" "2.15.0"
-      "sha256-KEE+rLoBBqNtP6AtFT33Xx4TzQydrvyUxKpamHe50jE=";
+    buildTypesAiobotocorePackage "ecs" "2.15.1"
+      "sha256-GOUkXglekGMNDlWdz9dyGvZpgSTfnZAh3e80CMvzumA=";
 
   types-aiobotocore-efs =
-    buildTypesAiobotocorePackage "efs" "2.15.0"
-      "sha256-3DZJT/rjzuxNi1oAc51AJguCXN9zI57cYp7Y3wTvtZs=";
+    buildTypesAiobotocorePackage "efs" "2.15.1"
+      "sha256-+KZQnRFKF+0nmOqec1jHa0ewAcfLBoW9mrMVNZn6q78=";
 
   types-aiobotocore-eks =
-    buildTypesAiobotocorePackage "eks" "2.15.0"
-      "sha256-KEl1qvE3QAnhScIbH9/WkwRDyIHDGNsCnNBom1nkdRg=";
+    buildTypesAiobotocorePackage "eks" "2.15.1"
+      "sha256-4d/rL6L/W2zfZ1naceSfH/E1y2DUNMcQ2tJaaKsRjLw=";
 
   types-aiobotocore-elastic-inference =
-    buildTypesAiobotocorePackage "elastic-inference" "2.15.0"
-      "sha256-65/pni/wL4lR1hzu0C7xfVeiT4kzl980hGr/pWJAwvU=";
+    buildTypesAiobotocorePackage "elastic-inference" "2.15.1"
+      "sha256-AOhrrWLtKq5Wr79TcFNa+A3/MhHMnAPMIPEgcum2/ZA=";
 
   types-aiobotocore-elasticache =
-    buildTypesAiobotocorePackage "elasticache" "2.15.0"
-      "sha256-GlAHYrfqx+VSBuXdwiRY4lUDqcfsmaxVXLwph6d6HCc=";
+    buildTypesAiobotocorePackage "elasticache" "2.15.1"
+      "sha256-Psxy6JILUzvwmUj9QP2wTeIgt/nbtpbG3LUozN9ltek=";
 
   types-aiobotocore-elasticbeanstalk =
-    buildTypesAiobotocorePackage "elasticbeanstalk" "2.15.0"
-      "sha256-Cd16ST0rbvq+NOYAOQgwU2UZWDiKfUTQ4vdxQlP3+Bs=";
+    buildTypesAiobotocorePackage "elasticbeanstalk" "2.15.1"
+      "sha256-3Jt67THyNfn92g6L/GZwPi0HLb6bpLuoDAkuXKPZu1Y=";
 
   types-aiobotocore-elastictranscoder =
-    buildTypesAiobotocorePackage "elastictranscoder" "2.15.0"
-      "sha256-3dGv1gPdU/0o0LBYMjzH+uoSMVzhd2dHwZNxt4jdE6U=";
+    buildTypesAiobotocorePackage "elastictranscoder" "2.15.1"
+      "sha256-mGNHO2T129nPrODffC8Y9+R+XKjVVUnFrw1yDkJ0g/A=";
 
   types-aiobotocore-elb =
-    buildTypesAiobotocorePackage "elb" "2.15.0"
-      "sha256-Y6J2/ChKP8JnrZEW8StlYONrAfRecKWJbf07I7zxIGI=";
+    buildTypesAiobotocorePackage "elb" "2.15.1"
+      "sha256-wceBAH30EypOqb4GqTP6aL6Ribm4l6b082+vB4sRDMs=";
 
   types-aiobotocore-elbv2 =
-    buildTypesAiobotocorePackage "elbv2" "2.15.0"
-      "sha256-7m97yZfyrNFCI3zQYdHJ4SJ5oTACcJ+cfzMzX0MSdN8=";
+    buildTypesAiobotocorePackage "elbv2" "2.15.1"
+      "sha256-4si+dqz/nPdXAF+eUkTICZQ8JaT+DcxEbmrxKZcF5G0=";
 
   types-aiobotocore-emr =
-    buildTypesAiobotocorePackage "emr" "2.15.0"
-      "sha256-4GNDh92LYUWxXjvgiYrOsY2joFbHalolgAWtnd79AJQ=";
+    buildTypesAiobotocorePackage "emr" "2.15.1"
+      "sha256-4Ak5F+RnUlOnMvEhVTXrHXkQQzWSo7iRIojrwYifMnA=";
 
   types-aiobotocore-emr-containers =
-    buildTypesAiobotocorePackage "emr-containers" "2.15.0"
-      "sha256-TnEfypfapADarPuVOfl0SzNnJSFJUQmxmeoDZ869fIk=";
+    buildTypesAiobotocorePackage "emr-containers" "2.15.1"
+      "sha256-Q1ZGZfpub4fceqFyBTLxj5G27ByHYPRH8KvEMyFZWyQ=";
 
   types-aiobotocore-emr-serverless =
-    buildTypesAiobotocorePackage "emr-serverless" "2.15.0"
-      "sha256-bjW88670lzwRWbIp5dHEJIf4EfJSOkQl7CIG2G/wpsQ=";
+    buildTypesAiobotocorePackage "emr-serverless" "2.15.1"
+      "sha256-lHSPS5/HAW2NFg6zCKXARznJ1UjTWIn/YDR9XlMa1ag=";
 
   types-aiobotocore-entityresolution =
-    buildTypesAiobotocorePackage "entityresolution" "2.15.0"
-      "sha256-9x6SSolu1CVMjQitu4/8QBxxhdk6G65onKE0EW4oGi0=";
+    buildTypesAiobotocorePackage "entityresolution" "2.15.1"
+      "sha256-QXAAHqiq1ThUvS5Y59SXA0OKQza0IrxPUyGwpZ1Ft1U=";
 
   types-aiobotocore-es =
-    buildTypesAiobotocorePackage "es" "2.15.0"
-      "sha256-s8lgcAKVZH3rxzogSj74xJ98thChBIvePIvJmHKrApc=";
+    buildTypesAiobotocorePackage "es" "2.15.1"
+      "sha256-lHKKWM984zvnbcO2ord+XkbFm91y2OAJlddm3dongo8=";
 
   types-aiobotocore-events =
-    buildTypesAiobotocorePackage "events" "2.15.0"
-      "sha256-bgdyFuggcdUfDxEtDjgbmCIc88z4wGbdKQrYmIiZKjs=";
+    buildTypesAiobotocorePackage "events" "2.15.1"
+      "sha256-3XQ9EjRu2qfpvHAWbM7XHodvMCR5PXOzM5ttes7ggEM=";
 
   types-aiobotocore-evidently =
-    buildTypesAiobotocorePackage "evidently" "2.15.0"
-      "sha256-ZNKyeP1THt85PeKqrof84e3glJ4x1TwT0ziqaCXKedk=";
+    buildTypesAiobotocorePackage "evidently" "2.15.1"
+      "sha256-DR+GYAUdE7Nfn0X0sp3IshbfKjcrtFVCk3KObFlQbdM=";
 
   types-aiobotocore-finspace =
-    buildTypesAiobotocorePackage "finspace" "2.15.0"
-      "sha256-gvwDgITwyGZFVndTMKIkD0svxPF3Ur09De7rtP1N57A=";
+    buildTypesAiobotocorePackage "finspace" "2.15.1"
+      "sha256-kIg535sFaySMannjaMHmVEZqx7Lh1OnGpBc/CxMqWzY=";
 
   types-aiobotocore-finspace-data =
-    buildTypesAiobotocorePackage "finspace-data" "2.15.0"
-      "sha256-+NpGar24GvTd3+3umx0axL2vNJQ0RtDKZzuKvNJu2RY=";
+    buildTypesAiobotocorePackage "finspace-data" "2.15.1"
+      "sha256-rGvEfMJt7mmrned4uLGaN58ZGgFJzNPwxFCRu3SghWg=";
 
   types-aiobotocore-firehose =
-    buildTypesAiobotocorePackage "firehose" "2.15.0"
-      "sha256-BD2gBxbEGlAolHT7xHBj58i4zVHXy3o0xGpIprcCA1I=";
+    buildTypesAiobotocorePackage "firehose" "2.15.1"
+      "sha256-gkBhNs6Cpy7dL4o/SyOxwF7eCwlnHaGxbSjO0FvPxpM=";
 
   types-aiobotocore-fis =
-    buildTypesAiobotocorePackage "fis" "2.15.0"
-      "sha256-qRkkIDm1n3z41pVntjSLypDnM3UVQlXuh5A+sWipFGY=";
+    buildTypesAiobotocorePackage "fis" "2.15.1"
+      "sha256-BKyTNVhRzYjQDXwhTpo9rblgEonzPubmJIOrCnwaEus=";
 
   types-aiobotocore-fms =
-    buildTypesAiobotocorePackage "fms" "2.15.0"
-      "sha256-i2wfly+9R4KyK1rsRIwKbK3P6OnXpfCxWC8ZV1Fx1M4=";
+    buildTypesAiobotocorePackage "fms" "2.15.1"
+      "sha256-9v2x/BYM6tiPWPC/c7ZNJufl5EStBRq7dSW9S3jaWTc=";
 
   types-aiobotocore-forecast =
-    buildTypesAiobotocorePackage "forecast" "2.15.0"
-      "sha256-SC0rCCOVa47auM4pasWds3nOzO19anbT5jL1UVIUKXo=";
+    buildTypesAiobotocorePackage "forecast" "2.15.1"
+      "sha256-7B24s2z0hwaXZzj/ryhfIqbiFPaiFuC8GOn5MaYsB0U=";
 
   types-aiobotocore-forecastquery =
-    buildTypesAiobotocorePackage "forecastquery" "2.15.0"
-      "sha256-3+z4Ef85r9aOPdkLXV8L/+9MBvQpLNkFIElRBlQLsRo=";
+    buildTypesAiobotocorePackage "forecastquery" "2.15.1"
+      "sha256-Z/Ul3IhUDhYjijXU9fFCOsG2r927wvl3pOWP+SxZ7rE=";
 
   types-aiobotocore-frauddetector =
-    buildTypesAiobotocorePackage "frauddetector" "2.15.0"
-      "sha256-UroaCR4B1cgLe4l2+RKdUa9/Q6LLpglmohhYDROSdnU=";
+    buildTypesAiobotocorePackage "frauddetector" "2.15.1"
+      "sha256-ZNnWPccp4nnNAUk6tsAfV6xYS0U98rh17bTXG9+NjBY=";
 
   types-aiobotocore-fsx =
-    buildTypesAiobotocorePackage "fsx" "2.15.0"
-      "sha256-9iYbsEG4J4HeXBuCiQQtzOLVBzlkkcg404TbQGg+E7E=";
+    buildTypesAiobotocorePackage "fsx" "2.15.1"
+      "sha256-72IyOCvtGPR2JNpIIy0rgiACfmDfxKlV/wo5AvzTdf4=";
 
   types-aiobotocore-gamelift =
-    buildTypesAiobotocorePackage "gamelift" "2.15.0"
-      "sha256-x9KREjqQw/DMOD3cbdw19mH4zOxvqKcMIRe/doGGn0s=";
+    buildTypesAiobotocorePackage "gamelift" "2.15.1"
+      "sha256-jFgO3ks0u/1YMjeQXHvMYoa4O35+VrvpeXWIAeJRj2I=";
 
   types-aiobotocore-gamesparks =
     buildTypesAiobotocorePackage "gamesparks" "2.7.0"
       "sha256-oVbKtuLMPpCQcZYx/cH1Dqjv/t6/uXsveflfFVqfN+8=";
 
   types-aiobotocore-glacier =
-    buildTypesAiobotocorePackage "glacier" "2.15.0"
-      "sha256-k/oPZr4TznL4ygQND0EuXCsSZNgVouBTm8Pih3m3j6k=";
+    buildTypesAiobotocorePackage "glacier" "2.15.1"
+      "sha256-5BewcGF6cDdPnTqyKLHlJIYuiv5N4GSuIlouRCEMeAQ=";
 
   types-aiobotocore-globalaccelerator =
-    buildTypesAiobotocorePackage "globalaccelerator" "2.15.0"
-      "sha256-e6bP28zUjuyGn9Y+IWJyYkcRNTQ8odpK6vlZUuxSIHg=";
+    buildTypesAiobotocorePackage "globalaccelerator" "2.15.1"
+      "sha256-fh2RP530haUdEOM7noDiBmiHf5Cv+YvF8S4Xoh84K20=";
 
   types-aiobotocore-glue =
-    buildTypesAiobotocorePackage "glue" "2.15.0"
-      "sha256-iEi6pPUnJ1VRFXpdFhNVDf8fQ94kByVZEUzLC4SPYIQ=";
+    buildTypesAiobotocorePackage "glue" "2.15.1"
+      "sha256-z4fe7DbzI2AIkCa4qBS4kGyPcgti1d/CPJCqe82OuR4=";
 
   types-aiobotocore-grafana =
-    buildTypesAiobotocorePackage "grafana" "2.15.0"
-      "sha256-vQJJB10LNbGNvQTj+xHVneRChhxaFZkHXel5DRg7RSs=";
+    buildTypesAiobotocorePackage "grafana" "2.15.1"
+      "sha256-V6uqUzVntsISmOUH9Mjy5DjLxiYkPN9k6BtQFwer4wM=";
 
   types-aiobotocore-greengrass =
-    buildTypesAiobotocorePackage "greengrass" "2.15.0"
-      "sha256-RDhbq/ucOitxsOeElmNV5kXGlVTHv/g2d5sxAaBzLlI=";
+    buildTypesAiobotocorePackage "greengrass" "2.15.1"
+      "sha256-C/W6eBJauG9QI8MMc7hFzkN4A21RRMH6kSU5Wq/qXus=";
 
   types-aiobotocore-greengrassv2 =
-    buildTypesAiobotocorePackage "greengrassv2" "2.15.0"
-      "sha256-47eFTzMPom+q4Ha6HRjPOQCMbn9X5OtEbpScbH+JrpA=";
+    buildTypesAiobotocorePackage "greengrassv2" "2.15.1"
+      "sha256-00hMhRWJ4W91I6cG5IXyyNqjyxPFrwmbHp69EWIIkMg=";
 
   types-aiobotocore-groundstation =
-    buildTypesAiobotocorePackage "groundstation" "2.15.0"
-      "sha256-6+KjFU7B46BL2wsXpMawQT/3DTjdVfcir/XVq1mYS0c=";
+    buildTypesAiobotocorePackage "groundstation" "2.15.1"
+      "sha256-++YYod+5UlCzknDJ/0l3hwPNukO9o2M0CoZR0lyOTnA=";
 
   types-aiobotocore-guardduty =
-    buildTypesAiobotocorePackage "guardduty" "2.15.0"
-      "sha256-IBiDqyfJYhKyqt3v3hd8y72UXawwUed3BILsswrWkmg=";
+    buildTypesAiobotocorePackage "guardduty" "2.15.1"
+      "sha256-+fJrH77TQKCBoio2R3LEJLmUOtSXd9oaf+PaN0YyEdA=";
 
   types-aiobotocore-health =
-    buildTypesAiobotocorePackage "health" "2.15.0"
-      "sha256-WMgJb50/QiojGKgh6s81aKjFrewlh3bx6YWroTIZabA=";
+    buildTypesAiobotocorePackage "health" "2.15.1"
+      "sha256-KNaHkgFc1W6cK7nwt7ZibmeL3zMmO2/6O1OlRkrUERY=";
 
   types-aiobotocore-healthlake =
-    buildTypesAiobotocorePackage "healthlake" "2.15.0"
-      "sha256-qy++uEn9Ph2Ek6Rzpth6j3x1NMK1AqoF50HFcVZBbIU=";
+    buildTypesAiobotocorePackage "healthlake" "2.15.1"
+      "sha256-JtP47qVkcTMtafPT/YbEu/CFOh4yp1VLICTVzB2LeV4=";
 
   types-aiobotocore-honeycode =
     buildTypesAiobotocorePackage "honeycode" "2.13.0"
       "sha256-DeeheoQeFEcDH21DSNs2kSR1rjnPLtTgz0yNCFnE+Io=";
 
   types-aiobotocore-iam =
-    buildTypesAiobotocorePackage "iam" "2.15.0"
-      "sha256-HcCuedSOhN7B4xwCH2zQz7RxrVdz6y+L7ZfNoCWG8RE=";
+    buildTypesAiobotocorePackage "iam" "2.15.1"
+      "sha256-CKNmGY362fvOEdm9+UvElI9U3dZhjY4sTDnuzBaPJyw=";
 
   types-aiobotocore-identitystore =
-    buildTypesAiobotocorePackage "identitystore" "2.15.0"
-      "sha256-etmeEUkNyB/I760pSt3VEqbzqKnk44Evi1zqUc1SxFI=";
+    buildTypesAiobotocorePackage "identitystore" "2.15.1"
+      "sha256-LIEyxMseTo/G44R9gUeWFOoR/k1aZ1a6nLA8uuoti70=";
 
   types-aiobotocore-imagebuilder =
-    buildTypesAiobotocorePackage "imagebuilder" "2.15.0"
-      "sha256-0jIUpv7Njy5h6vzRxnKqr0kIIiHBUkOZh+NEW1s6tLw=";
+    buildTypesAiobotocorePackage "imagebuilder" "2.15.1"
+      "sha256-YromFw8hMXBV3v9rAfmAFg/1MWMSsBR8jCjgnN3Qjdc=";
 
   types-aiobotocore-importexport =
-    buildTypesAiobotocorePackage "importexport" "2.15.0"
-      "sha256-v0gErsdr3Ljiyil8Ct7iNGqf61VenoExZOUhH760SPA=";
+    buildTypesAiobotocorePackage "importexport" "2.15.1"
+      "sha256-UvwCZclRwoDaAMhY6CdhCADFs0m258Z34FVTH95CrZ8=";
 
   types-aiobotocore-inspector =
-    buildTypesAiobotocorePackage "inspector" "2.15.0"
-      "sha256-HInhkpxGJ886jRhspnQDWJkRF3jmo5J1PetVNrzuS7Q=";
+    buildTypesAiobotocorePackage "inspector" "2.15.1"
+      "sha256-5vgqzDYe/y3vHvKFuYfhArZfmLHRPDuhGaSBRHWUiis=";
 
   types-aiobotocore-inspector2 =
-    buildTypesAiobotocorePackage "inspector2" "2.15.0"
-      "sha256-hvFzgJO69n+Jr5trZLv85PuActzWRXrLfRW0Iqdn9jk=";
+    buildTypesAiobotocorePackage "inspector2" "2.15.1"
+      "sha256-2CPWpQt1jylh05MtxFIoig4DVoSBkHYVKEl0j/2s1v0=";
 
   types-aiobotocore-internetmonitor =
-    buildTypesAiobotocorePackage "internetmonitor" "2.15.0"
-      "sha256-qgg/j2d763Q4e4axjkhXC3I+BnlJ24j4sZ4hxbvpgYA=";
+    buildTypesAiobotocorePackage "internetmonitor" "2.15.1"
+      "sha256-aXAhRpaoJC0BR/KqG/0FF139mLFBTaqQdr0m5B8vz/k=";
 
   types-aiobotocore-iot =
-    buildTypesAiobotocorePackage "iot" "2.15.0"
-      "sha256-/KgXN3dWVw/ITZ51SOtJRvlUqc1kPxalRa7l7Rb6gSk=";
+    buildTypesAiobotocorePackage "iot" "2.15.1"
+      "sha256-iVdmdRpw4/gj6Lsy6gP8C6HwvIKhKmKHpvR5HoB4jE8=";
 
   types-aiobotocore-iot-data =
-    buildTypesAiobotocorePackage "iot-data" "2.15.0"
-      "sha256-7q+IBCltYgU5i8QuLlHm0ZFdZcDVDPLmw+tkrBSHeQQ=";
+    buildTypesAiobotocorePackage "iot-data" "2.15.1"
+      "sha256-WVcWtkcrV0jTqCuygnDi6CZFVt/xuReFy6ji+BAjylQ=";
 
   types-aiobotocore-iot-jobs-data =
-    buildTypesAiobotocorePackage "iot-jobs-data" "2.15.0"
-      "sha256-aKQepzdWJBZQ+f633DVLErPldqrjyrkkAYMZt4Bi3gY=";
+    buildTypesAiobotocorePackage "iot-jobs-data" "2.15.1"
+      "sha256-Ym5Pxg3N++/QRdLNzHAOZQmObdroyhgO6tPHLmGfCPY=";
 
   types-aiobotocore-iot-roborunner =
     buildTypesAiobotocorePackage "iot-roborunner" "2.12.2"
       "sha256-O/nGvYfUibI4EvHgONtkYHFv/dZSpHCehXjietPiMJo=";
 
   types-aiobotocore-iot1click-devices =
-    buildTypesAiobotocorePackage "iot1click-devices" "2.15.0"
-      "sha256-c81lJVCAx4haFwRtRfzab8A6YKVspaUSwI9i/nd7jw8=";
+    buildTypesAiobotocorePackage "iot1click-devices" "2.15.1"
+      "sha256-OJmSfZaKAfiq7UImpgF/wKTzYaqxlhqrkOAbk7OchrM=";
 
   types-aiobotocore-iot1click-projects =
-    buildTypesAiobotocorePackage "iot1click-projects" "2.15.0"
-      "sha256-Bb9ze8VK6lRT0Ts1PhQ6jrOrjcMzYYrThqVCN4COdRw=";
+    buildTypesAiobotocorePackage "iot1click-projects" "2.15.1"
+      "sha256-8Q6P8K87YIs+UsR5Vyyx9IMBW0fLAMqCu/LkqkUQYEU=";
 
   types-aiobotocore-iotanalytics =
-    buildTypesAiobotocorePackage "iotanalytics" "2.15.0"
-      "sha256-eOuQ4Bead3AQ4zD7Ibc/J7BO1bT3FxY0hlUB8qLz390=";
+    buildTypesAiobotocorePackage "iotanalytics" "2.15.1"
+      "sha256-HkzZSHFbEWv67uQRIH6W/CsAFI1HpsFeNLvbqjQEJsQ=";
 
   types-aiobotocore-iotdeviceadvisor =
-    buildTypesAiobotocorePackage "iotdeviceadvisor" "2.15.0"
-      "sha256-vrCjbqXz1DGStxCJXwQgrQHzI7BIxGee5zolY/pU6JI=";
+    buildTypesAiobotocorePackage "iotdeviceadvisor" "2.15.1"
+      "sha256-SMNXQLSk9rFAXgEKXk23cjWRRvhnUcskkQyeSetngcE=";
 
   types-aiobotocore-iotevents =
-    buildTypesAiobotocorePackage "iotevents" "2.15.0"
-      "sha256-3YScaOGMmSYRY+ObPUMWMsCJuUy6dhOYP9LNzluZnhk=";
+    buildTypesAiobotocorePackage "iotevents" "2.15.1"
+      "sha256-vRnjkeGogwcdtRFybEuqB4FjR89N0KR8pdDWs4caa8I=";
 
   types-aiobotocore-iotevents-data =
-    buildTypesAiobotocorePackage "iotevents-data" "2.15.0"
-      "sha256-Q/i0S+Y/tbnM5buFT838rLwBKJenYcPmfwBq7pJ6pyQ=";
+    buildTypesAiobotocorePackage "iotevents-data" "2.15.1"
+      "sha256-j9yAFJUVBUtViPCO3DBCo1tC9AcLO2Uy4I2lfThBV+I=";
 
   types-aiobotocore-iotfleethub =
-    buildTypesAiobotocorePackage "iotfleethub" "2.15.0"
-      "sha256-EvUSF8PXk7Vb3+ic6ZtSdHJ63w2SmS0pp7QytP/tQss=";
+    buildTypesAiobotocorePackage "iotfleethub" "2.15.1"
+      "sha256-k7D8o7sxTlyjmlCBmt2uY/FKC6KUWmx9LL9k2zedszU=";
 
   types-aiobotocore-iotfleetwise =
-    buildTypesAiobotocorePackage "iotfleetwise" "2.15.0"
-      "sha256-ZEWme0qNdJpQqTKit2wqMbsCa+1E+8+TaqVz/NwolSQ=";
+    buildTypesAiobotocorePackage "iotfleetwise" "2.15.1"
+      "sha256-lozZuY4r9CkPi+SD9p/T35HyjiHVMmJ33GKNEZ/htPc=";
 
   types-aiobotocore-iotsecuretunneling =
-    buildTypesAiobotocorePackage "iotsecuretunneling" "2.15.0"
-      "sha256-O48C/03s2bPB8DhN00BuwoW4gIqUnQG6Dm2I+Vs3waU=";
+    buildTypesAiobotocorePackage "iotsecuretunneling" "2.15.1"
+      "sha256-3Bw3N2aIUzKNLyMGnHsxQB8bofonIcqJANariAKqXsI=";
 
   types-aiobotocore-iotsitewise =
-    buildTypesAiobotocorePackage "iotsitewise" "2.15.0"
-      "sha256-smId9Cxm0QJ7YiORYp3FdzRNt96kFIlpnWBMbSldtYE=";
+    buildTypesAiobotocorePackage "iotsitewise" "2.15.1"
+      "sha256-WZqYRDV21kkgBMb5z+6KKTlGxDJKXmMl1u3RlTPavl4=";
 
   types-aiobotocore-iotthingsgraph =
-    buildTypesAiobotocorePackage "iotthingsgraph" "2.15.0"
-      "sha256-cyjMATxGhhu4oYoa3l076VdgKJ2HHcrqrkGOYvAYMnE=";
+    buildTypesAiobotocorePackage "iotthingsgraph" "2.15.1"
+      "sha256-/ArOj+prhHoDPRymOW4NN8IXNkWuE/wZJuRAXMVmzpg=";
 
   types-aiobotocore-iottwinmaker =
-    buildTypesAiobotocorePackage "iottwinmaker" "2.15.0"
-      "sha256-xOmpDzfMY28x5eebi6P9pzPeM0bOdaj5yYeIaMnaI9E=";
+    buildTypesAiobotocorePackage "iottwinmaker" "2.15.1"
+      "sha256-gE3/juMs0BFJZEq291UGWAh41NCRHWHmZY+KcZ9IFJE=";
 
   types-aiobotocore-iotwireless =
-    buildTypesAiobotocorePackage "iotwireless" "2.15.0"
-      "sha256-d4Vxj2CQVXYTIPkPMF7hAi6TK3RTebuelZ+LfVCyIb8=";
+    buildTypesAiobotocorePackage "iotwireless" "2.15.1"
+      "sha256-PRORLAzdQ0QmYSPYWrQaPSwW8JaeTyzg8Z+N8/Hqjz8=";
 
   types-aiobotocore-ivs =
-    buildTypesAiobotocorePackage "ivs" "2.15.0"
-      "sha256-EefoDS/gNX1VkN5/5lRf4lOTHTmU0h1uZWFPiQERzvE=";
+    buildTypesAiobotocorePackage "ivs" "2.15.1"
+      "sha256-OIvBSFt9S+SmZIjdw/zcC/FC/3d9Huce5jQXgj5D+ik=";
 
   types-aiobotocore-ivs-realtime =
-    buildTypesAiobotocorePackage "ivs-realtime" "2.15.0"
-      "sha256-GBan8Ln1n/ESWDNfbRlapLI5hgyamHTKQZdroasPpxo=";
+    buildTypesAiobotocorePackage "ivs-realtime" "2.15.1"
+      "sha256-Eh5fuYJawPwAFuQl0/wLq+gTJ02C5wFZsETDsOSi3LU=";
 
   types-aiobotocore-ivschat =
-    buildTypesAiobotocorePackage "ivschat" "2.15.0"
-      "sha256-SE0wPCcmri42ZHBqw1zA07JHA29Zq40QAfeuGKb5cis=";
+    buildTypesAiobotocorePackage "ivschat" "2.15.1"
+      "sha256-jk6zZ3zX94kIfld9oXd6zW7ILhaa01XOt7c+/5pn8kk=";
 
   types-aiobotocore-kafka =
-    buildTypesAiobotocorePackage "kafka" "2.15.0"
-      "sha256-eCQIXF+idvdZZa29cdQQbNWqDCl7YRBiL6oYooS82Xw=";
+    buildTypesAiobotocorePackage "kafka" "2.15.1"
+      "sha256-NJv1QF3qBn5LJ7yhKcSmy6W3OJ8kenfzQ4RkSRx8iTo=";
 
   types-aiobotocore-kafkaconnect =
-    buildTypesAiobotocorePackage "kafkaconnect" "2.15.0"
-      "sha256-a9/2yUk/rq0npsCyrgK/2dNWVE5qP8tqF7qpSsyT40I=";
+    buildTypesAiobotocorePackage "kafkaconnect" "2.15.1"
+      "sha256-7EDrF3TxDgLeAnbUeLQj7SpFPLB+uMjqc/sQxWaXYlU=";
 
   types-aiobotocore-kendra =
-    buildTypesAiobotocorePackage "kendra" "2.15.0"
-      "sha256-4xHwrD35jq9gbPR7X0TJx60GxystcHdMCuTxSZKckhw=";
+    buildTypesAiobotocorePackage "kendra" "2.15.1"
+      "sha256-8k/FEmIfl2dKDt4JrCWdrLskYuj+A2VEHm0jqHWfUp8=";
 
   types-aiobotocore-kendra-ranking =
-    buildTypesAiobotocorePackage "kendra-ranking" "2.15.0"
-      "sha256-6MoK7C3eEhaty4jn6/Jc4o/WsZRTxDQ0FATrpSodTME=";
+    buildTypesAiobotocorePackage "kendra-ranking" "2.15.1"
+      "sha256-ZaDBuYlm35DRaiKv+xV2L+e/E5x1rGN59UTL2U5bRp8=";
 
   types-aiobotocore-keyspaces =
-    buildTypesAiobotocorePackage "keyspaces" "2.15.0"
-      "sha256-aIjdGRxpS6bbiarTM425jE8B2xbVYKaTaiJhVSQ/4JM=";
+    buildTypesAiobotocorePackage "keyspaces" "2.15.1"
+      "sha256-UgzrxIq3vh8dfw80VCue7gf8l19TqRUmRuAS/cW/G1M=";
 
   types-aiobotocore-kinesis =
-    buildTypesAiobotocorePackage "kinesis" "2.15.0"
-      "sha256-hzKV9+gFBwkIbNhlUdDrRyVFU3/VasZfyTjaZNGA0MI=";
+    buildTypesAiobotocorePackage "kinesis" "2.15.1"
+      "sha256-MF7n5Z70BFUAXaFuTDWIzFuiZ3u1fpYoZrBfRQR97Qw=";
 
   types-aiobotocore-kinesis-video-archived-media =
-    buildTypesAiobotocorePackage "kinesis-video-archived-media" "2.15.0"
-      "sha256-w2b8fP8AEH3bh3iWPym7zAmX0eyXy4hobqYXwAOs3zg=";
+    buildTypesAiobotocorePackage "kinesis-video-archived-media" "2.15.1"
+      "sha256-bEZV3TDr3l6Ogn49kFW/3IcFi/4NjQQnaC1LrDChlcI=";
 
   types-aiobotocore-kinesis-video-media =
-    buildTypesAiobotocorePackage "kinesis-video-media" "2.15.0"
-      "sha256-OkF8NwJTK9doelF0LCoKivpX8IQL0gJT+WgDEi1ZhkY=";
+    buildTypesAiobotocorePackage "kinesis-video-media" "2.15.1"
+      "sha256-PPT89cO2FukHtnXQHgcNZie3vPCDBmbrfRDiZCZaJ1E=";
 
   types-aiobotocore-kinesis-video-signaling =
-    buildTypesAiobotocorePackage "kinesis-video-signaling" "2.15.0"
-      "sha256-/1eZFJLoCnBbvQlSSBgwbEZRCfFdZIUbNIimTVfnxAE=";
+    buildTypesAiobotocorePackage "kinesis-video-signaling" "2.15.1"
+      "sha256-Fez2At/MFggTu7ZtfKLWCm7iELH6gumBhn3t7KdJzVA=";
 
   types-aiobotocore-kinesis-video-webrtc-storage =
-    buildTypesAiobotocorePackage "kinesis-video-webrtc-storage" "2.15.0"
-      "sha256-++LfFLQ6NkCs6NwMkJzZYUFvEw1iJA24NV0nq+9eMnY=";
+    buildTypesAiobotocorePackage "kinesis-video-webrtc-storage" "2.15.1"
+      "sha256-5h9x9Rgb1Sb8wIQwRcjkonc2070QahwPkKXfQ/lFFI8=";
 
   types-aiobotocore-kinesisanalytics =
-    buildTypesAiobotocorePackage "kinesisanalytics" "2.15.0"
-      "sha256-QaWFDq5DZiaqHZDOt9uat0d+YFsJymd+J+dJ8FBnsJ0=";
+    buildTypesAiobotocorePackage "kinesisanalytics" "2.15.1"
+      "sha256-JEye+bOxLrRJDToMs5jQZ2wcHy1K/2C5oPFUIRrtO5g=";
 
   types-aiobotocore-kinesisanalyticsv2 =
-    buildTypesAiobotocorePackage "kinesisanalyticsv2" "2.15.0"
-      "sha256-qoGXnmE2xrttERNdlD0vcgGvusymNo43Qmke53Cu9O0=";
+    buildTypesAiobotocorePackage "kinesisanalyticsv2" "2.15.1"
+      "sha256-j2gcnHFfWTVD3NatfJXsp3hRVEsy4930OclgR5IPbDM=";
 
   types-aiobotocore-kinesisvideo =
-    buildTypesAiobotocorePackage "kinesisvideo" "2.15.0"
-      "sha256-i5itjd7OC0MIzdV4cXYk/jKnL/fi7PqfcjBqEBxOGpU=";
+    buildTypesAiobotocorePackage "kinesisvideo" "2.15.1"
+      "sha256-mnKzF2lgYtHTNEwecoqs4qt9hQ5m2xLo79/kZHFyF5I=";
 
   types-aiobotocore-kms =
-    buildTypesAiobotocorePackage "kms" "2.15.0"
-      "sha256-tNrJ8m8e1yvBxcnAFbwDPr6mLQSEYCuip/6cnIfnkYw=";
+    buildTypesAiobotocorePackage "kms" "2.15.1"
+      "sha256-CCyhwWkjtI7wp5CN1MCK0M//bOu4ZGttbHJSUcidjUA=";
 
   types-aiobotocore-lakeformation =
-    buildTypesAiobotocorePackage "lakeformation" "2.15.0"
-      "sha256-db+t78Wdjp9Q0Yelq00j4uGO3COAq9wAQMiS04OHCDM=";
+    buildTypesAiobotocorePackage "lakeformation" "2.15.1"
+      "sha256-+BlDjTPv+fmKmUInm6FpOQFt5H5atz7BWKhrt56A3Co=";
 
   types-aiobotocore-lambda =
-    buildTypesAiobotocorePackage "lambda" "2.15.0"
-      "sha256-+zVb3jcfhxcwdZInmNgI5XD8kYg+cOztM5+vKw0NQig=";
+    buildTypesAiobotocorePackage "lambda" "2.15.1"
+      "sha256-hCTL2KBMt5p51YwnOYNcpGvzG2wvZjt23kK3FX4Qp5U=";
 
   types-aiobotocore-lex-models =
-    buildTypesAiobotocorePackage "lex-models" "2.15.0"
-      "sha256-CTBYSHSjk140r5/ntNrbhCW9qHyJkHKnuzDGy/VnvkA=";
+    buildTypesAiobotocorePackage "lex-models" "2.15.1"
+      "sha256-A8BAADavGEB7sa+fh9SRahoqN3mne7ABZjcnZI9YfBk=";
 
   types-aiobotocore-lex-runtime =
-    buildTypesAiobotocorePackage "lex-runtime" "2.15.0"
-      "sha256-HTMVi8/mDsMfLYxbOa1JoOqfFGyG87k5PDy6QBCWmFo=";
+    buildTypesAiobotocorePackage "lex-runtime" "2.15.1"
+      "sha256-QVYHr4fbnZPozVghHOZVsyChTuP2S0Ys+876slONaEc=";
 
   types-aiobotocore-lexv2-models =
-    buildTypesAiobotocorePackage "lexv2-models" "2.15.0"
-      "sha256-n+YKYwgx6LK4biiy7R0jroAniQH5eyJAZNCwt3bmd5U=";
+    buildTypesAiobotocorePackage "lexv2-models" "2.15.1"
+      "sha256-uqZrNG/mOCnfYjNF5FQofjSUeXhnidunT1754yame7E=";
 
   types-aiobotocore-lexv2-runtime =
-    buildTypesAiobotocorePackage "lexv2-runtime" "2.15.0"
-      "sha256-dsNybSvDpCf8WcCyLmsoNmvGyAYjOPMpaZEuT1Uon6w=";
+    buildTypesAiobotocorePackage "lexv2-runtime" "2.15.1"
+      "sha256-hQGTDbhJNiJc5dORzg7XJ4p+ZatNcI0qoT70qtMHzHc=";
 
   types-aiobotocore-license-manager =
-    buildTypesAiobotocorePackage "license-manager" "2.15.0"
-      "sha256-A/uBBx6+WR/QfyVSRoQ5QvxgJBoKYKomaV4Fy9bpdXs=";
+    buildTypesAiobotocorePackage "license-manager" "2.15.1"
+      "sha256-4whyQ2X/R2eMdQ7DOygNQFqMgLA+w+6ydyN8s7yxgB4=";
 
   types-aiobotocore-license-manager-linux-subscriptions =
-    buildTypesAiobotocorePackage "license-manager-linux-subscriptions" "2.15.0"
-      "sha256-Fsr3RTvMDVSagXHnZj2NMoqLjcVIYBGWKT5WsnIWebg=";
+    buildTypesAiobotocorePackage "license-manager-linux-subscriptions" "2.15.1"
+      "sha256-uD/N/ueijWNwibOrivY0r2HiQjYOuHQUONcW3iRCVUY=";
 
   types-aiobotocore-license-manager-user-subscriptions =
-    buildTypesAiobotocorePackage "license-manager-user-subscriptions" "2.15.0"
-      "sha256-UDxwOQm+n6wABPchWLmTFE0K1CjPiQwISmLl+7Za9w4=";
+    buildTypesAiobotocorePackage "license-manager-user-subscriptions" "2.15.1"
+      "sha256-wWghsiPCvWY7VX5XV0ad65nnG9bI5F+E5xEUzOGDdnY=";
 
   types-aiobotocore-lightsail =
-    buildTypesAiobotocorePackage "lightsail" "2.15.0"
-      "sha256-iIDdWLBhFNNxtMSardWyzHL8JcvgHJIaudJ+05PXL7Q=";
+    buildTypesAiobotocorePackage "lightsail" "2.15.1"
+      "sha256-dcGUPUxGvD/ZEyoo193VVOhSJhoFkgwSjpOV1kX/vMM=";
 
   types-aiobotocore-location =
-    buildTypesAiobotocorePackage "location" "2.15.0"
-      "sha256-fodpQvoIPV1oTNgnSfW+3zM4AMLwe3pHVtYwZYB2kaA=";
+    buildTypesAiobotocorePackage "location" "2.15.1"
+      "sha256-4rTqmcRB3HjskWJZLbQaPDyNQGHXmVVJqb5LK+EPH6Y=";
 
   types-aiobotocore-logs =
-    buildTypesAiobotocorePackage "logs" "2.15.0"
-      "sha256-ZhbzssEml+X1laF9Cs2MegVLZ4EJCV3E4ZxLW12vEKU=";
+    buildTypesAiobotocorePackage "logs" "2.15.1"
+      "sha256-CRluCc0/byuRlGr3uQyWg/MfCpPnoiS5inNLiYkhwCY=";
 
   types-aiobotocore-lookoutequipment =
-    buildTypesAiobotocorePackage "lookoutequipment" "2.15.0"
-      "sha256-H2iedaGVN7uM7BLlzcnhdSbDQI96paStbohcijsRBUk=";
+    buildTypesAiobotocorePackage "lookoutequipment" "2.15.1"
+      "sha256-q5ExCn4HAdAGISDIRckrnlmQ+J1RDNgBa5hmYSJHtVc=";
 
   types-aiobotocore-lookoutmetrics =
-    buildTypesAiobotocorePackage "lookoutmetrics" "2.15.0"
-      "sha256-VqVU6ziEvRtSQ60jPw2/XZo7dZTyAaLNUZ+6W9V8x+g=";
+    buildTypesAiobotocorePackage "lookoutmetrics" "2.15.1"
+      "sha256-SvJor9naL/MzyTtHjOn2QMNnLYXnmHYH11DuWg0+y/U=";
 
   types-aiobotocore-lookoutvision =
-    buildTypesAiobotocorePackage "lookoutvision" "2.15.0"
-      "sha256-7NoKEpbYPGMaaE2l8fzvE7wymcHOGy7La7sPzTWZzn8=";
+    buildTypesAiobotocorePackage "lookoutvision" "2.15.1"
+      "sha256-68PGFV+fSjjwAq4SoiOAaJXw1jKdQegFgz2UeHV9iL8=";
 
   types-aiobotocore-m2 =
-    buildTypesAiobotocorePackage "m2" "2.15.0"
-      "sha256-oR4biBouqRzHpLi8t62eicIBAC6uDxKhHCFJXcw98VA=";
+    buildTypesAiobotocorePackage "m2" "2.15.1"
+      "sha256-TrP432QWYmAmnka3CiWklZh3g/xrLhGJVw8iWLR5f8E=";
 
   types-aiobotocore-machinelearning =
-    buildTypesAiobotocorePackage "machinelearning" "2.15.0"
-      "sha256-/7OUplbaSrqFCX6FM5It2M0einbHeKdPuhlPuW1oAf0=";
+    buildTypesAiobotocorePackage "machinelearning" "2.15.1"
+      "sha256-0+nIbuZeuKIhQiC2+kSaDztMLOUe9rZ+guDROGM+YI4=";
 
   types-aiobotocore-macie =
     buildTypesAiobotocorePackage "macie" "2.7.0"
       "sha256-hJJtGsK2b56nKX1ZhiarC+ffyjHYWRiC8II4oyDZWWw=";
 
   types-aiobotocore-macie2 =
-    buildTypesAiobotocorePackage "macie2" "2.15.0"
-      "sha256-sZbckbmw1LfBLDiRjtfk2ogZe45H35vViBvr/z/syY8=";
+    buildTypesAiobotocorePackage "macie2" "2.15.1"
+      "sha256-lJq53Sxg+RpZSeQKG+nu0EhRQEEUSPoWqiORJUcoqEI=";
 
   types-aiobotocore-managedblockchain =
-    buildTypesAiobotocorePackage "managedblockchain" "2.15.0"
-      "sha256-rCmVEy/oDykR2eiEZ8K1rP+M9hvie8Fr/aVXGX/mnng=";
+    buildTypesAiobotocorePackage "managedblockchain" "2.15.1"
+      "sha256-RZUktF80I0PXhIPEZJav1i1a4FyFSyHODTeUsIcDHGE=";
 
   types-aiobotocore-managedblockchain-query =
-    buildTypesAiobotocorePackage "managedblockchain-query" "2.15.0"
-      "sha256-234BPfns0M64IQL6zLw2YXrEm6Gv9dr8jFZ6W9kiIFc=";
+    buildTypesAiobotocorePackage "managedblockchain-query" "2.15.1"
+      "sha256-xmPCGjlO0EThkhUWy+VlHLplAx7f7+zXKzr5hb/1e6A=";
 
   types-aiobotocore-marketplace-catalog =
-    buildTypesAiobotocorePackage "marketplace-catalog" "2.15.0"
-      "sha256-xt9u8d4mUUzkieGKwsh/682O1EFplNOCvf/5RuEL9iA=";
+    buildTypesAiobotocorePackage "marketplace-catalog" "2.15.1"
+      "sha256-OJeNrERgHfCYfgpn+DMmo7ZgUujg5G3bQpedipAxbX4=";
 
   types-aiobotocore-marketplace-entitlement =
-    buildTypesAiobotocorePackage "marketplace-entitlement" "2.15.0"
-      "sha256-ZQOMPaczJfEeHHPv4GWKKrQUOBDZLBIqol4fhriAhzA=";
+    buildTypesAiobotocorePackage "marketplace-entitlement" "2.15.1"
+      "sha256-0tSQ1wnz7R7KaRVsoNGeUcbmf4cRBrUMArCEEDJRrtc=";
 
   types-aiobotocore-marketplacecommerceanalytics =
-    buildTypesAiobotocorePackage "marketplacecommerceanalytics" "2.15.0"
-      "sha256-ykZADFdCQ78IlBanzIQuWiHV5p7DuI4QPYwle1H63Bw=";
+    buildTypesAiobotocorePackage "marketplacecommerceanalytics" "2.15.1"
+      "sha256-gq//bvGswyJgLHypO0vC0rUruMvr5DH0TQPgxb6Xkrc=";
 
   types-aiobotocore-mediaconnect =
-    buildTypesAiobotocorePackage "mediaconnect" "2.15.0"
-      "sha256-Glz572WmmAhDL7s2sBNACPwSZhB3c0JzvycEZGLIMoc=";
+    buildTypesAiobotocorePackage "mediaconnect" "2.15.1"
+      "sha256-E0hjBGm+mIW0wG8kdLAhXc4BzMzJK4gESiyS2xVIEpU=";
 
   types-aiobotocore-mediaconvert =
-    buildTypesAiobotocorePackage "mediaconvert" "2.15.0"
-      "sha256-T2S8GaUePcH/bnCOFbt1Tu9Fudhv+xoBEhJX6giF2a0=";
+    buildTypesAiobotocorePackage "mediaconvert" "2.15.1"
+      "sha256-bHWlDRHqZ6vYcsM01peSdcQ5oqvSGiG/UHWlOinT1QQ=";
 
   types-aiobotocore-medialive =
-    buildTypesAiobotocorePackage "medialive" "2.15.0"
-      "sha256-1pBMtaFdCzCWv2OXdP36NaeoLInFqlLTG46cSbWHihg=";
+    buildTypesAiobotocorePackage "medialive" "2.15.1"
+      "sha256-PrQPNUQI065kb8+ihArJOroydrAbOhFdS2yzq55nTKw=";
 
   types-aiobotocore-mediapackage =
-    buildTypesAiobotocorePackage "mediapackage" "2.15.0"
-      "sha256-3AQtWf67flmSz6pJ4HMzClD4qyuQUFafpGB74D8KJTA=";
+    buildTypesAiobotocorePackage "mediapackage" "2.15.1"
+      "sha256-2/pUMsZsuW44TpNCdtciCJ9z+Z7aREyBMBIFdV80lgU=";
 
   types-aiobotocore-mediapackage-vod =
-    buildTypesAiobotocorePackage "mediapackage-vod" "2.15.0"
-      "sha256-BPQwsGw/xXEP5SeDhIQRu376UQ9AiP7M7hy+B5j56tw=";
+    buildTypesAiobotocorePackage "mediapackage-vod" "2.15.1"
+      "sha256-QIaQ06qrpPa4nb7PgOyhbYH1Oz1KL1dwwy6/D60tgKk=";
 
   types-aiobotocore-mediapackagev2 =
-    buildTypesAiobotocorePackage "mediapackagev2" "2.15.0"
-      "sha256-Yjr+/QxMF6E7c5jsYzjptKMzMSezcSE/u5rVqBu2nGw=";
+    buildTypesAiobotocorePackage "mediapackagev2" "2.15.1"
+      "sha256-+YxeyUt3GqsliHI/T8ZMxfweAhnAXWHLxBZSNbmPVDg=";
 
   types-aiobotocore-mediastore =
-    buildTypesAiobotocorePackage "mediastore" "2.15.0"
-      "sha256-YsgTZ0j3i3nlEERkF4fLqVn5M9pkzguFqthx5XSVn1E=";
+    buildTypesAiobotocorePackage "mediastore" "2.15.1"
+      "sha256-09o+YQysUdNGoNT+IXaPIOCSHUxYFXezjxTvqPPWBNo=";
 
   types-aiobotocore-mediastore-data =
-    buildTypesAiobotocorePackage "mediastore-data" "2.15.0"
-      "sha256-ZnYZPMBhRC7e8kot/7RXCbXYGS5cU0NRfXiAdWgXVAA=";
+    buildTypesAiobotocorePackage "mediastore-data" "2.15.1"
+      "sha256-yDovPCnikCe4qHPCyZPZEu7UlIHLW59EySO3xValmgw=";
 
   types-aiobotocore-mediatailor =
-    buildTypesAiobotocorePackage "mediatailor" "2.15.0"
-      "sha256-FjHfv8tfQVFk0iBD8np1KCQFX+BuprkIiEAUJCEDPn0=";
+    buildTypesAiobotocorePackage "mediatailor" "2.15.1"
+      "sha256-BnrpdnphOkjk9D3MuhMEEBFL08NZE140o4+VR1Rp4O4=";
 
   types-aiobotocore-medical-imaging =
-    buildTypesAiobotocorePackage "medical-imaging" "2.15.0"
-      "sha256-sxbmmX7Y7NoyZzOPq3+vQFU57JrBStsWHMZig3E2ZUc=";
+    buildTypesAiobotocorePackage "medical-imaging" "2.15.1"
+      "sha256-6ona+KE489SPJSlokzwpiqERuBgWjqIYofh1rUmeKwo=";
 
   types-aiobotocore-memorydb =
-    buildTypesAiobotocorePackage "memorydb" "2.15.0"
-      "sha256-C6dAMsCasQw2+bPFnBJVUZHdKUodT1zLKYVGizI0UiA=";
+    buildTypesAiobotocorePackage "memorydb" "2.15.1"
+      "sha256-lYBb737JcKQa5cKm94O1C/psjuRNFFNftn3dctUeOnQ=";
 
   types-aiobotocore-meteringmarketplace =
-    buildTypesAiobotocorePackage "meteringmarketplace" "2.15.0"
-      "sha256-UG5Wy/1Fb3JwSL9cbzegHIj/UmVDyBIW0PhovEMMtZs=";
+    buildTypesAiobotocorePackage "meteringmarketplace" "2.15.1"
+      "sha256-9Z5s03sTVEzzXO43CTuf+YICuXisAZ/OGFyH44KOuF8=";
 
   types-aiobotocore-mgh =
-    buildTypesAiobotocorePackage "mgh" "2.15.0"
-      "sha256-YGh12HkugOCGThtFOM/YGTGSsAqhkdyLXwe/DUo06JE=";
+    buildTypesAiobotocorePackage "mgh" "2.15.1"
+      "sha256-Oqi4SM+L1FQLs0jfyWXILG/XHs5X5K+5jvGcIr76OeY=";
 
   types-aiobotocore-mgn =
-    buildTypesAiobotocorePackage "mgn" "2.15.0"
-      "sha256-pt+o3fHfEZ+i0nTtA3aL9N5835Z2fJPDTI27ct1Q6ts=";
+    buildTypesAiobotocorePackage "mgn" "2.15.1"
+      "sha256-RqvU6K50yGzVQBSzS90htrFOScpondnyceN3ISshYlI=";
 
   types-aiobotocore-migration-hub-refactor-spaces =
-    buildTypesAiobotocorePackage "migration-hub-refactor-spaces" "2.15.0"
-      "sha256-UVbGGevpTSsk/5u4ZM4ssbupT4NNJOXRS1j6Ar6NTvg=";
+    buildTypesAiobotocorePackage "migration-hub-refactor-spaces" "2.15.1"
+      "sha256-j4LVmlaI8tuJxjkweiZRWgnYlR5p/M2u8JSkMg3Yufs=";
 
   types-aiobotocore-migrationhub-config =
-    buildTypesAiobotocorePackage "migrationhub-config" "2.15.0"
-      "sha256-isZ/J3BH52c3kADs3QV6NCaN4U1W0SLH+2vx5FBUfYM=";
+    buildTypesAiobotocorePackage "migrationhub-config" "2.15.1"
+      "sha256-yQDw0I8jlsVpL8MSerOV66yRdCE5ik7R/v+rkBAzKrk=";
 
   types-aiobotocore-migrationhuborchestrator =
-    buildTypesAiobotocorePackage "migrationhuborchestrator" "2.15.0"
-      "sha256-21q8uRwtbfsX03ayhHNFecq8ZC/VTYZENmpWauk1oL0=";
+    buildTypesAiobotocorePackage "migrationhuborchestrator" "2.15.1"
+      "sha256-2XxADXGruMbzM50bElDkwlKQZ/r+6HPhMOjj8InGOlM=";
 
   types-aiobotocore-migrationhubstrategy =
-    buildTypesAiobotocorePackage "migrationhubstrategy" "2.15.0"
-      "sha256-xXmi5qhzx4ZNTwXxAwOkPHHuMVevdjgm6ER0V/zaDf4=";
+    buildTypesAiobotocorePackage "migrationhubstrategy" "2.15.1"
+      "sha256-+VYnuMVf16mrgMJ5DMqdy6CPLGavuA0gUW1kv9Uu9rs=";
 
   types-aiobotocore-mobile =
     buildTypesAiobotocorePackage "mobile" "2.13.2"
       "sha256-OxB91BCAmYnY72JBWZaBlEkpAxN2Q5aY4i1Pt3eD9hc=";
 
   types-aiobotocore-mq =
-    buildTypesAiobotocorePackage "mq" "2.15.0"
-      "sha256-c/m/RAQabQHFWArEYuvEWjekBSyh+gPTHYlwNnpQ7r0=";
+    buildTypesAiobotocorePackage "mq" "2.15.1"
+      "sha256-2WEJoWXSfDmFl9liWtIaviLnAHgRA5dAamQx1YfXgzE=";
 
   types-aiobotocore-mturk =
-    buildTypesAiobotocorePackage "mturk" "2.15.0"
-      "sha256-vtZK0eYARSRbn9RpRK4yrKz0erx75YoFCPjuGBV2ztM=";
+    buildTypesAiobotocorePackage "mturk" "2.15.1"
+      "sha256-TK9wWp3GEHhn4jypBdQEeJZp31IvKFFTuSLKxqxZoNU=";
 
   types-aiobotocore-mwaa =
-    buildTypesAiobotocorePackage "mwaa" "2.15.0"
-      "sha256-uI+uv/D25J/bkTAS3koq7rOgGimhDhHTW2ChCk9mTP0=";
+    buildTypesAiobotocorePackage "mwaa" "2.15.1"
+      "sha256-E1sWcLfHIlFelP3vb0yfhRpcyboyIutPrF3ByCNJITQ=";
 
   types-aiobotocore-neptune =
-    buildTypesAiobotocorePackage "neptune" "2.15.0"
-      "sha256-MiH4jhgesSLxaeFzzEJfuorkAC60ncXGRfg1EFvT/Qg=";
+    buildTypesAiobotocorePackage "neptune" "2.15.1"
+      "sha256-EtmxI6j5SlZZcv+YYsDki6VcMdRhZWEoJVT5VDFV/0g=";
 
   types-aiobotocore-network-firewall =
-    buildTypesAiobotocorePackage "network-firewall" "2.15.0"
-      "sha256-NLBghjcr8XbHnSaZVGxUj3jCinFZkmxagLlDMjQFCbM=";
+    buildTypesAiobotocorePackage "network-firewall" "2.15.1"
+      "sha256-xiDYqvt2e7MiAe8nCQR51q5Ov8B94eYJhQgN+lvFDuA=";
 
   types-aiobotocore-networkmanager =
-    buildTypesAiobotocorePackage "networkmanager" "2.15.0"
-      "sha256-fA1CFdV5G+3BeJFqGb/61Mh4fDgUCIHZEHb3+Po1d70=";
+    buildTypesAiobotocorePackage "networkmanager" "2.15.1"
+      "sha256-0SFOWAIckxRoWupRztC50CkOKqtUuxdNnM44SnPLYwQ=";
 
   types-aiobotocore-nimble =
-    buildTypesAiobotocorePackage "nimble" "2.15.0"
-      "sha256-0Fp0TZK21QeaKPUQ9prOE7IaDirSGBVEgH8yv8KKy20=";
+    buildTypesAiobotocorePackage "nimble" "2.15.1"
+      "sha256-Hz6tsIdCcx5vzwD0PDmPKSpjqYEYENAiZz7WuZC9Ago=";
 
   types-aiobotocore-oam =
-    buildTypesAiobotocorePackage "oam" "2.15.0"
-      "sha256-1EU1ZCtMoCQaCWnSXlrayKKaC9l82y4Edc2kc2Rm/EQ=";
+    buildTypesAiobotocorePackage "oam" "2.15.1"
+      "sha256-abqiY/pGLnV7UzoojcX5aaUtKC//y5UFYG8XoS9hJgM=";
 
   types-aiobotocore-omics =
-    buildTypesAiobotocorePackage "omics" "2.15.0"
-      "sha256-cHrKEgGV79ea9FBdDV4fltKzEDPRsiavuSszM1z7Utw=";
+    buildTypesAiobotocorePackage "omics" "2.15.1"
+      "sha256-5k0LPHH0qUlEEAV6ASredhR65Phs0133c37N+YB+tcY=";
 
   types-aiobotocore-opensearch =
-    buildTypesAiobotocorePackage "opensearch" "2.15.0"
-      "sha256-6S42q0i4SULwjyUEx1YCg5i1kgwz0oXC4tTFdMiG+Po=";
+    buildTypesAiobotocorePackage "opensearch" "2.15.1"
+      "sha256-4VqaoYwKkNckmb4BZDbWPLeEVa7tCxBD8g6pGQrr0Ng=";
 
   types-aiobotocore-opensearchserverless =
-    buildTypesAiobotocorePackage "opensearchserverless" "2.15.0"
-      "sha256-o6QHCkyNfjil/O28CCYgflU6E3pUkLZ/flGYcRoIWWE=";
+    buildTypesAiobotocorePackage "opensearchserverless" "2.15.1"
+      "sha256-80E81Kv3FzkgGQvpVHxmYqnNIRtureOvIDmKdnUo7z4=";
 
   types-aiobotocore-opsworks =
-    buildTypesAiobotocorePackage "opsworks" "2.15.0"
-      "sha256-Jg9u7P2vapI3Pwx4DFeWMTy7HriNlro0UctPhSt9TgA=";
+    buildTypesAiobotocorePackage "opsworks" "2.15.1"
+      "sha256-bAAgU0b33CNXVK0Q9ynyPGbL5KBiQq6sT/mL1pWJpD0=";
 
   types-aiobotocore-opsworkscm =
-    buildTypesAiobotocorePackage "opsworkscm" "2.15.0"
-      "sha256-34frDYBm3pH4/YYpKey/uG0Rv6DbNCXytSV3PnR3QHw=";
+    buildTypesAiobotocorePackage "opsworkscm" "2.15.1"
+      "sha256-nVywDMlzkITUEW7K6FWoYz953wAqCiUemT0tu48yO6M=";
 
   types-aiobotocore-organizations =
-    buildTypesAiobotocorePackage "organizations" "2.15.0"
-      "sha256-ZnjLqwh2+1N9Zb4nIkcysr+TGnUHBNxqy0vJABIQjuA=";
+    buildTypesAiobotocorePackage "organizations" "2.15.1"
+      "sha256-N7VzNLh+LCFrfdgmO982cau3B/d5uGoGO43vMMpTNBs=";
 
   types-aiobotocore-osis =
-    buildTypesAiobotocorePackage "osis" "2.15.0"
-      "sha256-HH7HaxV6bMywkwTsMXP3QZWc+lyWDzxtHmrZMIY/JOk=";
+    buildTypesAiobotocorePackage "osis" "2.15.1"
+      "sha256-NpjX3LpbF1CajlqY9ow4GqCVjlrTBVT1U/Gn3wHSQTE=";
 
   types-aiobotocore-outposts =
-    buildTypesAiobotocorePackage "outposts" "2.15.0"
-      "sha256-kGs9VO15CkvHdSZNA0d7OGUx5Mb/nzJK0kCna9qtRIA=";
+    buildTypesAiobotocorePackage "outposts" "2.15.1"
+      "sha256-lFRMsg9LhjizD8NsSyK209h+xtvYgTmJf5lc3OQyqdY=";
 
   types-aiobotocore-panorama =
-    buildTypesAiobotocorePackage "panorama" "2.15.0"
-      "sha256-JtO0nR0IhaCN8HNFt7YObk0ytdeirfGyXG6EFDguOxk=";
+    buildTypesAiobotocorePackage "panorama" "2.15.1"
+      "sha256-mdhrS+4Cg2VgH5AWroB2i5Pe6LEFfn9J9rEe+UQovxQ=";
 
   types-aiobotocore-payment-cryptography =
-    buildTypesAiobotocorePackage "payment-cryptography" "2.15.0"
-      "sha256-bqRMxwiGGbMqRFZqkQnsmNq4JWuXZOvLbX51IGeUz/Q=";
+    buildTypesAiobotocorePackage "payment-cryptography" "2.15.1"
+      "sha256-Lddnm936PSivXBygA44rgyd5wyPoPDns5XIYbQfQ91g=";
 
   types-aiobotocore-payment-cryptography-data =
-    buildTypesAiobotocorePackage "payment-cryptography-data" "2.15.0"
-      "sha256-+o4Q5VmzkR9+eGUow5dlS+IyD0ukR//EQ+pbEL1v5QQ=";
+    buildTypesAiobotocorePackage "payment-cryptography-data" "2.15.1"
+      "sha256-jTgsyYOLrTYNEfyhotGbbTrlQkTKqmd/0uKOMvmm06U=";
 
   types-aiobotocore-personalize =
-    buildTypesAiobotocorePackage "personalize" "2.15.0"
-      "sha256-jH5M7kLBNUQAsct741zqKB5OsZyIOMLbzKi96Wem4OY=";
+    buildTypesAiobotocorePackage "personalize" "2.15.1"
+      "sha256-RULc20Hv5VUT+MO1/hj+LlsdL88c1KuChWjzYY150Xs=";
 
   types-aiobotocore-personalize-events =
-    buildTypesAiobotocorePackage "personalize-events" "2.15.0"
-      "sha256-KBsvNpf8J53cucgF/auehCMsMCnVxixaGMIiW9YeSvM=";
+    buildTypesAiobotocorePackage "personalize-events" "2.15.1"
+      "sha256-3gl7NVGwfh1jy8VewE76+Pe/cPKQitdnC3JAau1S9dE=";
 
   types-aiobotocore-personalize-runtime =
-    buildTypesAiobotocorePackage "personalize-runtime" "2.15.0"
-      "sha256-Yf6yWHC2UqVHsxXc8ei6o6GPx8aAuhfMCkf7H/MoHzI=";
+    buildTypesAiobotocorePackage "personalize-runtime" "2.15.1"
+      "sha256-XnuLw62YOZN+EwJ6b1ZQCOwhIqzE8ntkrgmuqTY62vw=";
 
   types-aiobotocore-pi =
-    buildTypesAiobotocorePackage "pi" "2.15.0"
-      "sha256-Bc0f8YGFQmCybeec+SnhpWYTbGQFyt7P4WtUMc4hIuY=";
+    buildTypesAiobotocorePackage "pi" "2.15.1"
+      "sha256-g8pzgnV5puJSLogXJrQn1zhYiOB7446R4xkxOQCwqSY=";
 
   types-aiobotocore-pinpoint =
-    buildTypesAiobotocorePackage "pinpoint" "2.15.0"
-      "sha256-dHJY2ErvI8iJOdoGV+7f8hlHFtcr756fNiX8MTsXhUE=";
+    buildTypesAiobotocorePackage "pinpoint" "2.15.1"
+      "sha256-gZJM4c3tSilImlxeKWU3szTmpnXxpS6kAvF/zKXglFQ=";
 
   types-aiobotocore-pinpoint-email =
-    buildTypesAiobotocorePackage "pinpoint-email" "2.15.0"
-      "sha256-Dpdpfga05sbxoEiwmMwa9bYaclrrOK4HpOmqERoAYJw=";
+    buildTypesAiobotocorePackage "pinpoint-email" "2.15.1"
+      "sha256-eXcDiAQjLAObgX3gfGtlVL6BNK8fq81f70tPNNcKJJ8=";
 
   types-aiobotocore-pinpoint-sms-voice =
-    buildTypesAiobotocorePackage "pinpoint-sms-voice" "2.15.0"
-      "sha256-HAZyyUB+jpMcTwlUEJwmOxv6pTiyhWYdpbWnShVux2k=";
+    buildTypesAiobotocorePackage "pinpoint-sms-voice" "2.15.1"
+      "sha256-OPJiALIiUDioRjXkeLtksPBMlmsUpIRsZtuoTESnKpU=";
 
   types-aiobotocore-pinpoint-sms-voice-v2 =
-    buildTypesAiobotocorePackage "pinpoint-sms-voice-v2" "2.15.0"
-      "sha256-pI+ICkq+DyuutwMHngQYxprvQqdExaL0Fx8pDHDQ4MU=";
+    buildTypesAiobotocorePackage "pinpoint-sms-voice-v2" "2.15.1"
+      "sha256-SN3dXMpqcuJcWnpeUi4Jwtat9erU0KdSjfEbyf8pHXc=";
 
   types-aiobotocore-pipes =
-    buildTypesAiobotocorePackage "pipes" "2.15.0"
-      "sha256-MIBeZQBCCfmi6iehHD29uWX2ArGlyWA3wlTgVhBie2s=";
+    buildTypesAiobotocorePackage "pipes" "2.15.1"
+      "sha256-Ru3j6tm6I+wtpKzkxBSFCfAleI52WnOSqgvlCIla9fE=";
 
   types-aiobotocore-polly =
-    buildTypesAiobotocorePackage "polly" "2.15.0"
-      "sha256-g/MJiOG6PulfS5KpWxZqRS7eGNr83O6Q1wyoZvidXrA=";
+    buildTypesAiobotocorePackage "polly" "2.15.1"
+      "sha256-U9FwTzLVdE0UbAMTjMjrIMlRVlkuQRzKiIEd7ZepOWA=";
 
   types-aiobotocore-pricing =
-    buildTypesAiobotocorePackage "pricing" "2.15.0"
-      "sha256-egYnlcrzy8pZcIALNJSsW5AFfQ5O/2vQYTupGDBvNKE=";
+    buildTypesAiobotocorePackage "pricing" "2.15.1"
+      "sha256-FEzR+YjEGFKWbihsat2gaDp87fdIPDCmeRv79U08fFo=";
 
   types-aiobotocore-privatenetworks =
-    buildTypesAiobotocorePackage "privatenetworks" "2.15.0"
-      "sha256-fPrRL1QyMOvF2sg5axx6Czoa1Ad5kNs/j8MLqEh6dDE=";
+    buildTypesAiobotocorePackage "privatenetworks" "2.15.1"
+      "sha256-7OB4PIbZDsnXqLp+9cXd5ER5QIkUpjtJk+A+jT0286Y=";
 
   types-aiobotocore-proton =
-    buildTypesAiobotocorePackage "proton" "2.15.0"
-      "sha256-iJTcz8fTcBy3aw97Rn7J4m7Ha5kURK1EZvgiipqz64M=";
+    buildTypesAiobotocorePackage "proton" "2.15.1"
+      "sha256-MBUaIQIThP+JZHbVAU5r0yCHQs13wLAU87y1gRECFHU=";
 
   types-aiobotocore-qldb =
-    buildTypesAiobotocorePackage "qldb" "2.15.0"
-      "sha256-TZkL/IKBAUWR0meMUTkXqCa49ea8N32Ml67y4xjUA94=";
+    buildTypesAiobotocorePackage "qldb" "2.15.1"
+      "sha256-yES1WELzrI3Xz0F4S7y3NajtNTQO10S3hi+pQsZ4KVE=";
 
   types-aiobotocore-qldb-session =
-    buildTypesAiobotocorePackage "qldb-session" "2.15.0"
-      "sha256-uLNMZgaWk9tUwYkG3vZogqyPiTbDmLcJm8GQqT3vqI4=";
+    buildTypesAiobotocorePackage "qldb-session" "2.15.1"
+      "sha256-ISAoyu08TEXIr2VONRLIvRDaAOazDPEtPp66/CnmHv8=";
 
   types-aiobotocore-quicksight =
-    buildTypesAiobotocorePackage "quicksight" "2.15.0"
-      "sha256-QWXeYC6ZVd6tBDfOWtA1zUU7z2L0GOTeSuJiOvF2nZw=";
+    buildTypesAiobotocorePackage "quicksight" "2.15.1"
+      "sha256-eruqWUL7Yje7OJlV1arhKInqnXChEmI49nq75j4ZOrg=";
 
   types-aiobotocore-ram =
-    buildTypesAiobotocorePackage "ram" "2.15.0"
-      "sha256-BwuU/43NqfuZt99u0BtLjOye61pyLyFm55SbGR+mcEM=";
+    buildTypesAiobotocorePackage "ram" "2.15.1"
+      "sha256-/7+C/b51gkVW8QXyXg/5b1vzvTtZXS5ts9K6PWXAZU4=";
 
   types-aiobotocore-rbin =
-    buildTypesAiobotocorePackage "rbin" "2.15.0"
-      "sha256-0TrXf6db1xP42f9eJTBnzWr7w2su8Y0ExFTWmqV73fw=";
+    buildTypesAiobotocorePackage "rbin" "2.15.1"
+      "sha256-/joJicKfFNQhy24zZp6vM/EmGZGBTwPTQ8w8KHv6CF0=";
 
   types-aiobotocore-rds =
-    buildTypesAiobotocorePackage "rds" "2.15.0"
-      "sha256-X2fN3CYSDbqk6ImaaE4oVxOZbpN/UQzp1wMAFuOq7uY=";
+    buildTypesAiobotocorePackage "rds" "2.15.1"
+      "sha256-btYigxx5bnWll5u0IHDVpciY4ZV9dOxPDKReEv1i0AM=";
 
   types-aiobotocore-rds-data =
-    buildTypesAiobotocorePackage "rds-data" "2.15.0"
-      "sha256-vyi+0YaxujcmWQfm/vQaWY/iozoFTNHRkJsCqBDSby4=";
+    buildTypesAiobotocorePackage "rds-data" "2.15.1"
+      "sha256-Kn4uM9F1UkiWGshjX62WD5qROnnTw6TgG4bPv9EWz4A=";
 
   types-aiobotocore-redshift =
-    buildTypesAiobotocorePackage "redshift" "2.15.0"
-      "sha256-wavvzMsczE/TJJEqcCLVm7t2QHscZuv8TS6Qsuuu990=";
+    buildTypesAiobotocorePackage "redshift" "2.15.1"
+      "sha256-cOu5LEVvs1VdXyfgtM7PYzIUsNN1l//gHTiY0ArmFf0=";
 
   types-aiobotocore-redshift-data =
-    buildTypesAiobotocorePackage "redshift-data" "2.15.0"
-      "sha256-JK3ZCluyF9pReeLHZy4AjgRIJTzmabb4vYakuHIracs=";
+    buildTypesAiobotocorePackage "redshift-data" "2.15.1"
+      "sha256-9A4p2lohJEhOcL868mMJcmmjYSS8Gd/5ShbkvTunDQs=";
 
   types-aiobotocore-redshift-serverless =
-    buildTypesAiobotocorePackage "redshift-serverless" "2.15.0"
-      "sha256-aw/ubbtRU1rGRnYr1j2a/WQTohYjJhBmNJ8nP9Kxk4Y=";
+    buildTypesAiobotocorePackage "redshift-serverless" "2.15.1"
+      "sha256-s+maghPzS18nSG+ozOp/hKQJRHZHwPhsASqUXaOs6Pk=";
 
   types-aiobotocore-rekognition =
-    buildTypesAiobotocorePackage "rekognition" "2.15.0"
-      "sha256-Ptv7sgRHVfbtRIEQM/M0Di0UPIVZC79Td15H2SHyTsE=";
+    buildTypesAiobotocorePackage "rekognition" "2.15.1"
+      "sha256-aLCYGd8+LIgHxsR8Qr+rrruL5JERkn1etCL3o/A8sZw=";
 
   types-aiobotocore-resiliencehub =
-    buildTypesAiobotocorePackage "resiliencehub" "2.15.0"
-      "sha256-/tJDFZQCnSvww/Mp8xL0AGhJxTmCCeI68fkvC4TSbjU=";
+    buildTypesAiobotocorePackage "resiliencehub" "2.15.1"
+      "sha256-e8WN5g/vbWaYSNMZS43GOkdx6AFL15cPUvZn0Ufsvqk=";
 
   types-aiobotocore-resource-explorer-2 =
-    buildTypesAiobotocorePackage "resource-explorer-2" "2.15.0"
-      "sha256-yF8QaebGjKkuqZKU0kkgSjXBmVpVnGdhuGG8jYi8UP0=";
+    buildTypesAiobotocorePackage "resource-explorer-2" "2.15.1"
+      "sha256-/WiO9zp/YK8+2p97cbY5GwQcb1XB5i86QBlXERTDxk8=";
 
   types-aiobotocore-resource-groups =
-    buildTypesAiobotocorePackage "resource-groups" "2.15.0"
-      "sha256-mxFaUb2cLNLaq9+pdUbfumO096kr2Ic2qGdKirR41LE=";
+    buildTypesAiobotocorePackage "resource-groups" "2.15.1"
+      "sha256-hGUdTC5ksWqneEqIROSc3XqYANVrtL2caM+OqTVnlcw=";
 
   types-aiobotocore-resourcegroupstaggingapi =
-    buildTypesAiobotocorePackage "resourcegroupstaggingapi" "2.15.0"
-      "sha256-4ISZza2xs+0qJ61oLDRI+a8PIS2Dw5ybWjmWpMzW4UQ=";
+    buildTypesAiobotocorePackage "resourcegroupstaggingapi" "2.15.1"
+      "sha256-zJvPU3lXoxxw1LF0HkPTfO7d62Q0mTCuqGKQT/8LbPQ=";
 
   types-aiobotocore-robomaker =
-    buildTypesAiobotocorePackage "robomaker" "2.15.0"
-      "sha256-8R7Sy54+dC+PlgBmZ60vI0ZC31IqPbqv6x0kM4oomlE=";
+    buildTypesAiobotocorePackage "robomaker" "2.15.1"
+      "sha256-X1hQ7pzhlsD9AcD2JdM/1u9W8PGRFnJaWhArHhZLPrk=";
 
   types-aiobotocore-rolesanywhere =
-    buildTypesAiobotocorePackage "rolesanywhere" "2.15.0"
-      "sha256-8iyTLdJAWs9ptCUoeh9BkPQ50uCMRoT/NnKrQ8OajDc=";
+    buildTypesAiobotocorePackage "rolesanywhere" "2.15.1"
+      "sha256-VjjHrGv8GuQ+4Fd8meBih98YxFpVChvusBZDKJ7jvAA=";
 
   types-aiobotocore-route53 =
-    buildTypesAiobotocorePackage "route53" "2.15.0"
-      "sha256-UgH+fKQ+qsstCcPyvFUsG3ToMtJJCY4qlCkhMsfQfIM=";
+    buildTypesAiobotocorePackage "route53" "2.15.1"
+      "sha256-p1N0+9s+QDRoSkgiRtsmyGrxmse405CDwuPW10r2TFY=";
 
   types-aiobotocore-route53-recovery-cluster =
-    buildTypesAiobotocorePackage "route53-recovery-cluster" "2.15.0"
-      "sha256-4Zt9w4r3OxoXOQH0o8nmamEWWwA36yBaAFNeX0trDk0=";
+    buildTypesAiobotocorePackage "route53-recovery-cluster" "2.15.1"
+      "sha256-L27J6hqxLMwxm8r2DK3xc7LrtNOgt5HSBE/YsjqH9c8=";
 
   types-aiobotocore-route53-recovery-control-config =
-    buildTypesAiobotocorePackage "route53-recovery-control-config" "2.15.0"
-      "sha256-z5WITGBPD7P+k33UL9rD5VLavtyXV3LAZcv0FpgC6/w=";
+    buildTypesAiobotocorePackage "route53-recovery-control-config" "2.15.1"
+      "sha256-njXhqJ+7xnxabYnNqknXA67I2J88jxHk9oErziic1FU=";
 
   types-aiobotocore-route53-recovery-readiness =
-    buildTypesAiobotocorePackage "route53-recovery-readiness" "2.15.0"
-      "sha256-Wc1AnMZa92WjRuc+rVePRadTSdcZfEAYOnmOyEpMaHs=";
+    buildTypesAiobotocorePackage "route53-recovery-readiness" "2.15.1"
+      "sha256-U0jzrXqfz/X/Dg1S03/is/xkQwIO9ICwg5s/YYImBf4=";
 
   types-aiobotocore-route53domains =
-    buildTypesAiobotocorePackage "route53domains" "2.15.0"
-      "sha256-jUSEzlaMkj8Wj7VGXpIRwYHFl6n9Ei8dSgMIROtXsPo=";
+    buildTypesAiobotocorePackage "route53domains" "2.15.1"
+      "sha256-PL1oQYboRsEDlCACZ/f+WORfaj/3pv05XyyZf118cl0=";
 
   types-aiobotocore-route53resolver =
-    buildTypesAiobotocorePackage "route53resolver" "2.15.0"
-      "sha256-CUJK2fsYrzHtm/XOXIFY2XYflI7XS7V9p2LyLxb6Cus=";
+    buildTypesAiobotocorePackage "route53resolver" "2.15.1"
+      "sha256-P4Iq5h9zo7y0UIcwLml8cCjjP5wKgtxP2EX3KTVPobw=";
 
   types-aiobotocore-rum =
-    buildTypesAiobotocorePackage "rum" "2.15.0"
-      "sha256-qke+xaXPd7UjBq0C1eEjw8zwjd2hpuQ/XP3FJNULKgY=";
+    buildTypesAiobotocorePackage "rum" "2.15.1"
+      "sha256-3WO3zTqIDqRR+bkAdsEg8KxruV43uUKGV86c+7jAKgw=";
 
   types-aiobotocore-s3 =
-    buildTypesAiobotocorePackage "s3" "2.15.0"
-      "sha256-S3ZBfYlpZqBkUNgWNirNYkwlshwEDdEJVlJ+61Gdz/c=";
+    buildTypesAiobotocorePackage "s3" "2.15.1"
+      "sha256-nm1iUImUWba9BNV0JUKC1uYWxiFTKLCw3vUBsuqd188=";
 
   types-aiobotocore-s3control =
-    buildTypesAiobotocorePackage "s3control" "2.15.0"
-      "sha256-L9YP3AIR4wn4m+eG8mHrK8M+IzrVlSC1j/NMeWTLXDU=";
+    buildTypesAiobotocorePackage "s3control" "2.15.1"
+      "sha256-VDIAA8d4/zv5pI1frk6tFZJ9qWtC29b9rZdIYN0YYLA=";
 
   types-aiobotocore-s3outposts =
-    buildTypesAiobotocorePackage "s3outposts" "2.15.0"
-      "sha256-CFXrxd2HOtz0Z8sz9aIXLRKRYd9louiLBfixa68l5AU=";
+    buildTypesAiobotocorePackage "s3outposts" "2.15.1"
+      "sha256-3IyAJHmya+ycc0do6H4NZnhn3Duhj/ITiW+b90x7d8o=";
 
   types-aiobotocore-sagemaker =
-    buildTypesAiobotocorePackage "sagemaker" "2.15.0"
-      "sha256-hVy9kRYhnec8Q1wJDqZiSek5Ww5QmahwJRJX0V+PjmU=";
+    buildTypesAiobotocorePackage "sagemaker" "2.15.1"
+      "sha256-kwB5VOix83ehKTJ6cXvR5aHO5ogYQvg3+CAnWEFll1k=";
 
   types-aiobotocore-sagemaker-a2i-runtime =
-    buildTypesAiobotocorePackage "sagemaker-a2i-runtime" "2.15.0"
-      "sha256-3jd5E8DSxushqXkIfkS9zm2s2p+iLlJfFBqCJz9STz0=";
+    buildTypesAiobotocorePackage "sagemaker-a2i-runtime" "2.15.1"
+      "sha256-qGMnLC7fZA+OEwZNbfCQMJFiwO0mf/1chvMFi0CpIco=";
 
   types-aiobotocore-sagemaker-edge =
-    buildTypesAiobotocorePackage "sagemaker-edge" "2.15.0"
-      "sha256-uydOAL5VEfRTL0QLl0aKIdCEjw2RYRp/RRSVMOKKsHs=";
+    buildTypesAiobotocorePackage "sagemaker-edge" "2.15.1"
+      "sha256-oDvjSp0rQFBDclkyLifawL/hobIcT3RuNXS3IuJmG+4=";
 
   types-aiobotocore-sagemaker-featurestore-runtime =
-    buildTypesAiobotocorePackage "sagemaker-featurestore-runtime" "2.15.0"
-      "sha256-QiOGTUpL0R68Ns+Y3losMUVskv5YHf8/MnrmqeJqgmo=";
+    buildTypesAiobotocorePackage "sagemaker-featurestore-runtime" "2.15.1"
+      "sha256-ynKSN7dB42JJw6DQOpLjwZXSrNvIgqfYrlEaXKE+agw=";
 
   types-aiobotocore-sagemaker-geospatial =
-    buildTypesAiobotocorePackage "sagemaker-geospatial" "2.15.0"
-      "sha256-oQRTnA2lbRkd1Tv7g44GdKuVuq9BZ2PXLTNWUyABKfg=";
+    buildTypesAiobotocorePackage "sagemaker-geospatial" "2.15.1"
+      "sha256-GW0b2GWrahRsWM9p/sS896CLotC4NlHC+Tyya4AbANs=";
 
   types-aiobotocore-sagemaker-metrics =
-    buildTypesAiobotocorePackage "sagemaker-metrics" "2.15.0"
-      "sha256-jzwn2HDRNL9QmSEy6V2tNTL6gcHyBXPEQnuBVISy8xY=";
+    buildTypesAiobotocorePackage "sagemaker-metrics" "2.15.1"
+      "sha256-xT0K4NB2r9ajVEDgTr8tAPtUQLVwZj4/q/9lFxNoRy4=";
 
   types-aiobotocore-sagemaker-runtime =
-    buildTypesAiobotocorePackage "sagemaker-runtime" "2.15.0"
-      "sha256-RtVl6fH1znkuNWPZ4Ndhb+qplLfDq1n1YzQ9p9Wk6G0=";
+    buildTypesAiobotocorePackage "sagemaker-runtime" "2.15.1"
+      "sha256-EKfd1G+A7T5A/7h+ZfWm+feD7VCEUU+RohAM8804Th8=";
 
   types-aiobotocore-savingsplans =
-    buildTypesAiobotocorePackage "savingsplans" "2.15.0"
-      "sha256-uLmimcAk1vZO+2QlWlpV5LxTSxooYdQNsYET8CJ+tg0=";
+    buildTypesAiobotocorePackage "savingsplans" "2.15.1"
+      "sha256-fpMpgVdydbNYhse3LemZWeu6pvLuXWYy7Nt3+CSedl0=";
 
   types-aiobotocore-scheduler =
-    buildTypesAiobotocorePackage "scheduler" "2.15.0"
-      "sha256-0/WvqWSd8VGISlqrTx8ef6B839PkYzDte2JYRTXwUeM=";
+    buildTypesAiobotocorePackage "scheduler" "2.15.1"
+      "sha256-786gr8xrz39LVOuU0EYtyBhUxDbo3YEH5UXzmY4+xSo=";
 
   types-aiobotocore-schemas =
-    buildTypesAiobotocorePackage "schemas" "2.15.0"
-      "sha256-+RA7DzmObfY/lbo1CCQUDMFacw/mwQGzXG8L44/y5z8=";
+    buildTypesAiobotocorePackage "schemas" "2.15.1"
+      "sha256-JUC3Sa94XRotK9rTelvMVG4TUQyrnVQ9Mdd+byd4A3w=";
 
   types-aiobotocore-sdb =
-    buildTypesAiobotocorePackage "sdb" "2.15.0"
-      "sha256-ImfIS00D5p0FYZW43C6ZMz8dvSowWDavlauuTYRIBZg=";
+    buildTypesAiobotocorePackage "sdb" "2.15.1"
+      "sha256-EV0eNjxdjT/JNuTip75SuCVDZfvQz71UbIgUHWfbakc=";
 
   types-aiobotocore-secretsmanager =
-    buildTypesAiobotocorePackage "secretsmanager" "2.15.0"
-      "sha256-w/ngCgJP9V1i11LDIVB1mqaDc3mKhALCpHHpMjoWnL4=";
+    buildTypesAiobotocorePackage "secretsmanager" "2.15.1"
+      "sha256-GW4y+JyGelERL39KPMOcF/7+pwGBuPwKhNwecBi5BBg=";
 
   types-aiobotocore-securityhub =
-    buildTypesAiobotocorePackage "securityhub" "2.15.0"
-      "sha256-EM+0L25N202Y3jLmcDz9EzfCr913N+ttbO36s0B2Cjg=";
+    buildTypesAiobotocorePackage "securityhub" "2.15.1"
+      "sha256-ONJsSG+d2fSaoPyrchl+oosIeVSjwoN5d0BPolDhhbk=";
 
   types-aiobotocore-securitylake =
-    buildTypesAiobotocorePackage "securitylake" "2.15.0"
-      "sha256-grQYAC3rSiuW8JoqJr9ESuRx0OrwukhAHZuLBdTYMoc=";
+    buildTypesAiobotocorePackage "securitylake" "2.15.1"
+      "sha256-ggAfufDDaW+LdNindZoAR1xeWr+hQKr1ImTl+nGE0B8=";
 
   types-aiobotocore-serverlessrepo =
-    buildTypesAiobotocorePackage "serverlessrepo" "2.15.0"
-      "sha256-Vvt7f6trMwQWDIC8jOs0HrkG5UB7OyDZB8QKztYPusM=";
+    buildTypesAiobotocorePackage "serverlessrepo" "2.15.1"
+      "sha256-zUBoLdhvpvI/tTza9abj//Hkc59gMe70kqEF1SEW+FE=";
 
   types-aiobotocore-service-quotas =
-    buildTypesAiobotocorePackage "service-quotas" "2.15.0"
-      "sha256-NVUuGzwoRUyJu5rZVkJod0BIzIt6flp7egiuM9SzXIo=";
+    buildTypesAiobotocorePackage "service-quotas" "2.15.1"
+      "sha256-M1elV0BE1RyFOo2XlKVIt5gH1M4bIU7rld77+cGCptg=";
 
   types-aiobotocore-servicecatalog =
-    buildTypesAiobotocorePackage "servicecatalog" "2.15.0"
-      "sha256-pEUUNvG0GF73VL5o3djXl6bz5UsdUV6Jlz7itavgdqc=";
+    buildTypesAiobotocorePackage "servicecatalog" "2.15.1"
+      "sha256-fgFgmDsx68FgZHOXTrJEB6OqVOlaVWgSer29dKwiBJo=";
 
   types-aiobotocore-servicecatalog-appregistry =
-    buildTypesAiobotocorePackage "servicecatalog-appregistry" "2.15.0"
-      "sha256-/8dE7iiNcJ5ExvzorCG1rpbvOp6HNhw3hibymr+Y+z0=";
+    buildTypesAiobotocorePackage "servicecatalog-appregistry" "2.15.1"
+      "sha256-NG2E4XxicGVtpLqi8n/j2C+BsxdMyWb554XX/HlnExI=";
 
   types-aiobotocore-servicediscovery =
-    buildTypesAiobotocorePackage "servicediscovery" "2.15.0"
-      "sha256-0GNZgK445MrP84a8ZlOyfhbx24EOVWcwJMlK8G0Rjqo=";
+    buildTypesAiobotocorePackage "servicediscovery" "2.15.1"
+      "sha256-/6OTsZUTgwYXFzTf1G8hkngaN32L8dPJzgdNMSXisfo=";
 
   types-aiobotocore-ses =
-    buildTypesAiobotocorePackage "ses" "2.15.0"
-      "sha256-df/+KPwhP26hZIHj+kB8TT0SEmzvA1sSXEAyXOOu/oQ=";
+    buildTypesAiobotocorePackage "ses" "2.15.1"
+      "sha256-H3mZA65etYo+frlSNEMs/lT8G86oWbNjlkPefoIc6AA=";
 
   types-aiobotocore-sesv2 =
-    buildTypesAiobotocorePackage "sesv2" "2.15.0"
-      "sha256-17EmuWlNJZA+zIZChhHFkPRC+doE/n+ebPqVk73VtNs=";
+    buildTypesAiobotocorePackage "sesv2" "2.15.1"
+      "sha256-diE7lw1LMxiy4gRam1zymw98VJGKaEWwQ5FudCma9ZU=";
 
   types-aiobotocore-shield =
-    buildTypesAiobotocorePackage "shield" "2.15.0"
-      "sha256-LVdaqwMmqHeBlU++Npje5zo/y9lHkyeNFNNGaETypNk=";
+    buildTypesAiobotocorePackage "shield" "2.15.1"
+      "sha256-jeklWyR6ArvO9/i/2Iji+YbAsv2rnNLqKoSTBL5VDSQ=";
 
   types-aiobotocore-signer =
-    buildTypesAiobotocorePackage "signer" "2.15.0"
-      "sha256-K0R9aAS2jacez/U5l9QIiPsBUwMDlW/bb8blBVkoolY=";
+    buildTypesAiobotocorePackage "signer" "2.15.1"
+      "sha256-I+Cfmn14B9W1O/LBNWZZ9384H0DexJav2bkc4+2zV58=";
 
   types-aiobotocore-simspaceweaver =
-    buildTypesAiobotocorePackage "simspaceweaver" "2.15.0"
-      "sha256-Ilus9YxPmEpqLwuwh1GPZeDl/C7wVOUAaVi9xXRLT9E=";
+    buildTypesAiobotocorePackage "simspaceweaver" "2.15.1"
+      "sha256-1B4R4cjzz3fnevwRsT4o3mzlzw4tXbO1kENgWOWbU7w=";
 
   types-aiobotocore-sms =
-    buildTypesAiobotocorePackage "sms" "2.15.0"
-      "sha256-BniFLeuZataAM/NYyOK6iB4b2a/sWtgNRpVfgHsqYiY=";
+    buildTypesAiobotocorePackage "sms" "2.15.1"
+      "sha256-w2iD7ZpVIIDRuTWikJAp3j7j7jBfcpPnKXfTm6KWq10=";
 
   types-aiobotocore-sms-voice =
-    buildTypesAiobotocorePackage "sms-voice" "2.15.0"
-      "sha256-9MCKNyOtMOcEl/JpDNd4d9UmdJQFuxOSYVQFoRg3CL4=";
+    buildTypesAiobotocorePackage "sms-voice" "2.15.1"
+      "sha256-+SZAFFyf+UTytFecjCv/MH9VykOCxFxXJEen1DZdljs=";
 
   types-aiobotocore-snow-device-management =
-    buildTypesAiobotocorePackage "snow-device-management" "2.15.0"
-      "sha256-ZEz4+4y7ebhBOyeYxGUrwSDeqiU2/JDMJM/3i1jqJYU=";
+    buildTypesAiobotocorePackage "snow-device-management" "2.15.1"
+      "sha256-kaiXmu24wDGIzDtXJ2pT87Wdr3zzRioLVU5TjaNVsRo=";
 
   types-aiobotocore-snowball =
-    buildTypesAiobotocorePackage "snowball" "2.15.0"
-      "sha256-WL3OEnSX9SnfAZeNzknAwCiFTxnS49M8vg4Do+qa7Es=";
+    buildTypesAiobotocorePackage "snowball" "2.15.1"
+      "sha256-YvZxBJGNtRVSsJAtv46Nq9xliVvXShiI2exeir+bp8U=";
 
   types-aiobotocore-sns =
-    buildTypesAiobotocorePackage "sns" "2.15.0"
-      "sha256-zoLt5UlcGqxQZY3LYzL3urQeryT/KQqmlMlMOx5UD9k=";
+    buildTypesAiobotocorePackage "sns" "2.15.1"
+      "sha256-U/VvZwz7qMrnPjgQUL0NMnNS6e5X4PgW/rjwBi65iAU=";
 
   types-aiobotocore-sqs =
-    buildTypesAiobotocorePackage "sqs" "2.15.0"
-      "sha256-pYlp0b+AowToQQsrIcOS/dA/1a49WwNbojMsWXXroxs=";
+    buildTypesAiobotocorePackage "sqs" "2.15.1"
+      "sha256-CI9nNt+zfztYT6DwgjAe9RNtebegPAAsSl692FBF7hA=";
 
   types-aiobotocore-ssm =
-    buildTypesAiobotocorePackage "ssm" "2.15.0"
-      "sha256-LGuL7mGhe7XVBetPFKrwqswpyMwLO3aXuWRwuWV1n4g=";
+    buildTypesAiobotocorePackage "ssm" "2.15.1"
+      "sha256-x/b1hpCTHqZcTJTzwQc+pYjdOYCiyQdsLw1vBpuPQyc=";
 
   types-aiobotocore-ssm-contacts =
-    buildTypesAiobotocorePackage "ssm-contacts" "2.15.0"
-      "sha256-lycHVp5nrD6z0dXwqN5KTs7OGQwAZaAZCM5Gezqj+rQ=";
+    buildTypesAiobotocorePackage "ssm-contacts" "2.15.1"
+      "sha256-3N8kaI67M6xKuTsESi/x4FVXy2Lsdoc9RRGIo7bKAok=";
 
   types-aiobotocore-ssm-incidents =
-    buildTypesAiobotocorePackage "ssm-incidents" "2.15.0"
-      "sha256-CeSG0L3z5T+tlgrAa/dKU6knE6qKsA6B6+nJXDcgXqg=";
+    buildTypesAiobotocorePackage "ssm-incidents" "2.15.1"
+      "sha256-Fkl8ZgS3DD3hRYWQHl1cM2RCNHi8tWk9a1fyCQa+/KM=";
 
   types-aiobotocore-ssm-sap =
-    buildTypesAiobotocorePackage "ssm-sap" "2.15.0"
-      "sha256-0Dmwb0nOp3g3HY4gjxXKVRDFl/tjC1ppyzzrftgBkZU=";
+    buildTypesAiobotocorePackage "ssm-sap" "2.15.1"
+      "sha256-23gDeTpYf9sNK2ARSPwZTkNSlGIze8ybLymQ+X0cf74=";
 
   types-aiobotocore-sso =
-    buildTypesAiobotocorePackage "sso" "2.15.0"
-      "sha256-a9sxXz66olmSe2+PP27DFTcE9FK+ZFi7mNl3pdcOh8Q=";
+    buildTypesAiobotocorePackage "sso" "2.15.1"
+      "sha256-7uJXGduh2yrj0nLWgTyELxdB6ZaU7TX35GywXTECU64=";
 
   types-aiobotocore-sso-admin =
-    buildTypesAiobotocorePackage "sso-admin" "2.15.0"
-      "sha256-v+Co+P2VVLLF4HPES1x4gXFfq+m3EnreuD4iequsGis=";
+    buildTypesAiobotocorePackage "sso-admin" "2.15.1"
+      "sha256-qTAoxjZnze1ffC/QdVnCRy37H4Tzc1AkAERvvtVxkik=";
 
   types-aiobotocore-sso-oidc =
-    buildTypesAiobotocorePackage "sso-oidc" "2.15.0"
-      "sha256-qZ0w9T/NYTvLfOQ4CwZUoNtwVFmrAH6Ow6r5Lru1Vsk=";
+    buildTypesAiobotocorePackage "sso-oidc" "2.15.1"
+      "sha256-+MsbvjZLLdY/JOr/yWBvrfHQ3SEWvUtzvaImsYNX0YI=";
 
   types-aiobotocore-stepfunctions =
-    buildTypesAiobotocorePackage "stepfunctions" "2.15.0"
-      "sha256-bZPSrZ+hzxPrBYeE7PT8OGaM3V8T6950gxacsifLr0Y=";
+    buildTypesAiobotocorePackage "stepfunctions" "2.15.1"
+      "sha256-4YKcuhem2grrKP2I0y+fayyQ4beVhKQJ7KAC70TgN14=";
 
   types-aiobotocore-storagegateway =
-    buildTypesAiobotocorePackage "storagegateway" "2.15.0"
-      "sha256-THc96oaV0Bh7x9H+xSsV7LD1QwJKMT8t3z2H0Qzq3lw=";
+    buildTypesAiobotocorePackage "storagegateway" "2.15.1"
+      "sha256-DDxzE4KcnC4sjVgBMt2cldFgm2JIeA7pRR7lqocvXN8=";
 
   types-aiobotocore-sts =
-    buildTypesAiobotocorePackage "sts" "2.15.0"
-      "sha256-ElXjKUWdOuR3xOBF59/FjWol+4v16Z5KzaGsuNL//Ng=";
+    buildTypesAiobotocorePackage "sts" "2.15.1"
+      "sha256-LMs2iAbogup0JrXFBIJhpgn8oFuhH3jGnb/Xh60xsMg=";
 
   types-aiobotocore-support =
-    buildTypesAiobotocorePackage "support" "2.15.0"
-      "sha256-263KZcvknzGUEJYl1FX2iwqz/3OWDnE3twBwZepzFaY=";
+    buildTypesAiobotocorePackage "support" "2.15.1"
+      "sha256-fpQ5fan2CkWJrnir65tBHyXAqSa1CVQXt/Q1h7NiyjU=";
 
   types-aiobotocore-support-app =
-    buildTypesAiobotocorePackage "support-app" "2.15.0"
-      "sha256-5YPHOgKZJADFOcefgIBg5NwolDQxDqruE3rtv3SaqJo=";
+    buildTypesAiobotocorePackage "support-app" "2.15.1"
+      "sha256-W/uBm0i+eNsPdSpZ+WvxSRJpZTzRdnt4snregNIeghQ=";
 
   types-aiobotocore-swf =
-    buildTypesAiobotocorePackage "swf" "2.15.0"
-      "sha256-7HH2Pe87MmL1huAN2G9zNf7LfdWMWMgX6zIBAxap7NU=";
+    buildTypesAiobotocorePackage "swf" "2.15.1"
+      "sha256-ijmqVcESbAfQLCgWhIEqq1+V8fChp1Pq0IfeBjmPtPM=";
 
   types-aiobotocore-synthetics =
-    buildTypesAiobotocorePackage "synthetics" "2.15.0"
-      "sha256-98S15J1C+jOv6eTO/EPEYN4qj8eWKLotMMjgpPUA5k0=";
+    buildTypesAiobotocorePackage "synthetics" "2.15.1"
+      "sha256-mDvgYxDjVc2Z+IGCiaNR3xOYuht1LHJPW1lViQsfsfQ=";
 
   types-aiobotocore-textract =
-    buildTypesAiobotocorePackage "textract" "2.15.0"
-      "sha256-YwmAG8BMUrluE1oLDRVQ5CwfThaDnQahl2ENauOlhxw=";
+    buildTypesAiobotocorePackage "textract" "2.15.1"
+      "sha256-HLjYbm4OK2gvKMKBkNZytKlChMW43y8g2k0CMVVvcGY=";
 
   types-aiobotocore-timestream-query =
-    buildTypesAiobotocorePackage "timestream-query" "2.15.0"
-      "sha256-1RG3Y9yOkZh6/rySlvRzH32F5jDsw+o4UrCyiaRJZt0=";
+    buildTypesAiobotocorePackage "timestream-query" "2.15.1"
+      "sha256-Jx3U+EzIZzTntyq5YxlSJkHQaGX3JkKqCOlHtGqO7vY=";
 
   types-aiobotocore-timestream-write =
-    buildTypesAiobotocorePackage "timestream-write" "2.15.0"
-      "sha256-94yxaeKblMoFpN9UgZqR3+x65my8UHg8002tVNnWB18=";
+    buildTypesAiobotocorePackage "timestream-write" "2.15.1"
+      "sha256-h1eonOUwVXsybJ25UfQwZtZWuhDh1v8M10ZT9JM1NVo=";
 
   types-aiobotocore-tnb =
-    buildTypesAiobotocorePackage "tnb" "2.15.0"
-      "sha256-+5m/DzJB5y1eucLfqj3j7FyVRW4vgGxIJOfqLCs24qM=";
+    buildTypesAiobotocorePackage "tnb" "2.15.1"
+      "sha256-6b9c2UdaNHM3/GAiGWFnZVR7sUP+cUy9Z5W3Ig+7fSM=";
 
   types-aiobotocore-transcribe =
-    buildTypesAiobotocorePackage "transcribe" "2.15.0"
-      "sha256-HIFmwpEuWcvQVKHvQ9pbqrLk76J7IpH7Hd8qbm/Aopc=";
+    buildTypesAiobotocorePackage "transcribe" "2.15.1"
+      "sha256-bLQrTDUhbYOTYY+KvUxMwiHgPFHrAJxB8Yjy3TUAMCc=";
 
   types-aiobotocore-transfer =
-    buildTypesAiobotocorePackage "transfer" "2.15.0"
-      "sha256-7Hz2zgr87h5xVhkf1+UzJN+O13rPqohVN4qZ2/E8ir4=";
+    buildTypesAiobotocorePackage "transfer" "2.15.1"
+      "sha256-+cSgukEugB7RSrkWsEgbiMS6tvjAJDPwVP+rVEsAMJE=";
 
   types-aiobotocore-translate =
-    buildTypesAiobotocorePackage "translate" "2.15.0"
-      "sha256-eauTD0hzFk83sn41EnlJxrz3V1teKYQsD7ci9AhiFYc=";
+    buildTypesAiobotocorePackage "translate" "2.15.1"
+      "sha256-Hf46I5GHQyLAN6IXL0X0VN6Mr3CsMhhPFKqx/fDrHv8=";
 
   types-aiobotocore-verifiedpermissions =
-    buildTypesAiobotocorePackage "verifiedpermissions" "2.15.0"
-      "sha256-0MmY0RefjXcu/2cZjhR+DoLSBETiqTHO4p+O7/CsQSY=";
+    buildTypesAiobotocorePackage "verifiedpermissions" "2.15.1"
+      "sha256-yxamVPkF/RexBvdBpjUi8rYzEy5jOf15otKqi64gnOc=";
 
   types-aiobotocore-voice-id =
-    buildTypesAiobotocorePackage "voice-id" "2.15.0"
-      "sha256-5tsvPjGjtoXQZdYQ+NjoXcCU2F8IY/EQgEOUow+EIME=";
+    buildTypesAiobotocorePackage "voice-id" "2.15.1"
+      "sha256-B7Q0TAT7rMWVZf4wSE6qGxMalHwvV7hPrcnCw3vcQkw=";
 
   types-aiobotocore-vpc-lattice =
-    buildTypesAiobotocorePackage "vpc-lattice" "2.15.0"
-      "sha256-Lw4kqT/JIrzK4cVsm6c1hUTTE1t6etVHfuzskO6kMyY=";
+    buildTypesAiobotocorePackage "vpc-lattice" "2.15.1"
+      "sha256-ybBzzhKX3NClXHnYR7GBpQZGsF+xPprHrbHgOjeR+9U=";
 
   types-aiobotocore-waf =
-    buildTypesAiobotocorePackage "waf" "2.15.0"
-      "sha256-syx0otSKJ896wcitfxqsJafFxf/4nokZ7pUQGiEEYTg=";
+    buildTypesAiobotocorePackage "waf" "2.15.1"
+      "sha256-YPYrL6RRL0UhABcDZXpJQ8RQWDvPkD+y/qDQ1PbLCuU=";
 
   types-aiobotocore-waf-regional =
-    buildTypesAiobotocorePackage "waf-regional" "2.15.0"
-      "sha256-9qIuIhKCDE6W09Ue2RFTrmKzFjK+73l6MA5X2zhoo3U=";
+    buildTypesAiobotocorePackage "waf-regional" "2.15.1"
+      "sha256-fkKB2Cmg0i/OOJKkHmLzU0UWkUDXVAjXYmBWpal6pg4=";
 
   types-aiobotocore-wafv2 =
-    buildTypesAiobotocorePackage "wafv2" "2.15.0"
-      "sha256-yeQPntqK7MRxLVqW54sihvcQ4t1MU3+sEz76N+wE0DI=";
+    buildTypesAiobotocorePackage "wafv2" "2.15.1"
+      "sha256-f5xAh/57zMcvjJHeqDDSrlSx3u/J3e78oQmGVSyD4Vc=";
 
   types-aiobotocore-wellarchitected =
-    buildTypesAiobotocorePackage "wellarchitected" "2.15.0"
-      "sha256-ac5AzHfMlUq9x511Dfv4abQAjMc9LFvnmfSN7neAgdM=";
+    buildTypesAiobotocorePackage "wellarchitected" "2.15.1"
+      "sha256-j1yGNqM32RKzz5xmL52+cwS9JIj1DUIJQatHz7ZjZrg=";
 
   types-aiobotocore-wisdom =
-    buildTypesAiobotocorePackage "wisdom" "2.15.0"
-      "sha256-HYeQ/YnZYWyIs12disXzm9LM2ZA8K1KSCGyI2oPwfjA=";
+    buildTypesAiobotocorePackage "wisdom" "2.15.1"
+      "sha256-0rngVEUa9yBIeoMC2dKVVDty4DAiesQZJRm73C4PAhg=";
 
   types-aiobotocore-workdocs =
-    buildTypesAiobotocorePackage "workdocs" "2.15.0"
-      "sha256-hue/UsRvpngLHlgFFmTIPbCXzbtFB1vCkhEkiB7TNrA=";
+    buildTypesAiobotocorePackage "workdocs" "2.15.1"
+      "sha256-Jypse/lhsvGWfu8551dngM+Jp8BdIp2T1WRfqdV02ug=";
 
   types-aiobotocore-worklink =
-    buildTypesAiobotocorePackage "worklink" "2.15.0"
-      "sha256-m4lbQZhG7UjtgSnsPyH37K51YxohcdfRwe0jPZGqQUs=";
+    buildTypesAiobotocorePackage "worklink" "2.15.1"
+      "sha256-VvuxiybvGaehPqyVUYGO1bbVSQ0OYgk6LbzgoKLHF2c=";
 
   types-aiobotocore-workmail =
-    buildTypesAiobotocorePackage "workmail" "2.15.0"
-      "sha256-vQRAXpFV6RG4HWKRHLgLOQHr++Mqly20MsTlIn2M/yA=";
+    buildTypesAiobotocorePackage "workmail" "2.15.1"
+      "sha256-o2n4u7wgJPSS02LLZe+PLsxdwm5r+0j3VzDFVnR7bGc=";
 
   types-aiobotocore-workmailmessageflow =
-    buildTypesAiobotocorePackage "workmailmessageflow" "2.15.0"
-      "sha256-7iMPW/8tdqfAmcCNCcTppvzaa4zo/8NCQMIuByJVB44=";
+    buildTypesAiobotocorePackage "workmailmessageflow" "2.15.1"
+      "sha256-PQQLKPZYaCqIVTXS8PWAjrYjp4ZTMl1XDuvz27s10sY=";
 
   types-aiobotocore-workspaces =
-    buildTypesAiobotocorePackage "workspaces" "2.15.0"
-      "sha256-wN9Jx2vAtKsDJ9YJBJOVguEJY0OLu8OUxY/K9bRqymM=";
+    buildTypesAiobotocorePackage "workspaces" "2.15.1"
+      "sha256-eU+8eBZ52BEAqpvHWJ4aVr2kuz6/6fMu7yu4bA9f/TQ=";
 
   types-aiobotocore-workspaces-web =
-    buildTypesAiobotocorePackage "workspaces-web" "2.15.0"
-      "sha256-ikKQGGpRu04WF1cix4RysjNSSl0sbA6QdPP2b2amz0E=";
+    buildTypesAiobotocorePackage "workspaces-web" "2.15.1"
+      "sha256-+lUuiVz/wqkuH59QzB8ZIv+bvNGeNZvBDzUctYd6LAg=";
 
   types-aiobotocore-xray =
-    buildTypesAiobotocorePackage "xray" "2.15.0"
-      "sha256-6axavJjQY10qnYlFnxXQvj44Dg9hmqYbpAHmTeOHoUU=";
+    buildTypesAiobotocorePackage "xray" "2.15.1"
+      "sha256-+MKFgYPnSmSLjE9YP8fDjAo91o+mYkN2T4FbOMVSmnw=";
 }

From d2a4d36fae8a591de32b00848414f3c1def99819 Mon Sep 17 00:00:00 2001
From: Alistair Grant <alistairgrant@fastmail.com.au>
Date: Tue, 24 Sep 2024 08:51:43 +0200
Subject: [PATCH 045/107] glamoroustoolkit: 1.1.0 -> 1.1.2

---
 pkgs/development/tools/glamoroustoolkit/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/tools/glamoroustoolkit/default.nix b/pkgs/development/tools/glamoroustoolkit/default.nix
index e2f5ed297fc2..9f44b7493318 100644
--- a/pkgs/development/tools/glamoroustoolkit/default.nix
+++ b/pkgs/development/tools/glamoroustoolkit/default.nix
@@ -28,12 +28,12 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "glamoroustoolkit";
-  version = "1.1.0";
+  version = "1.1.2";
 
   src = fetchzip {
     url = "https://github.com/feenkcom/gtoolkit-vm/releases/download/v${finalAttrs.version}/GlamorousToolkit-x86_64-unknown-linux-gnu.zip";
     stripRoot = false;
-    hash = "sha256-863xmWC9AuNFTmmBTZVDSchgbqXuk14t1r6B6MeLU74=";
+    hash = "sha256-C48zAKkkOIHe7ggjtjBVLbfCVRdY6BJGqdvTI/rCfns=";
   };
 
   nativeBuildInputs = [

From 8459d1146fdf854492e1e89aff207d20cf5d0a5c Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Tue, 24 Sep 2024 11:00:41 +0200
Subject: [PATCH 046/107] python312Packages.weatherflow4py: 1.0.6 -> 1.2.0

Diff: jeeftor/weatherflow4py@refs/tags/v1.0.6...v1.2.0

Changelog: https://github.com/jeeftor/weatherflow4py/releases/tag/v1.2.0
---
 pkgs/development/python-modules/weatherflow4py/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/python-modules/weatherflow4py/default.nix b/pkgs/development/python-modules/weatherflow4py/default.nix
index 5ffcffcbcff9..d4417374d491 100644
--- a/pkgs/development/python-modules/weatherflow4py/default.nix
+++ b/pkgs/development/python-modules/weatherflow4py/default.nix
@@ -15,16 +15,16 @@
 
 buildPythonPackage rec {
   pname = "weatherflow4py";
-  version = "1.0.6";
+  version = "1.2.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.11";
+  disabled = pythonOlder "3.12";
 
   src = fetchFromGitHub {
     owner = "jeeftor";
     repo = "weatherflow4py";
     rev = "refs/tags/v${version}";
-    hash = "sha256-NazRT/gSaxat90eA66ajjVPvN9UFNEX4y1hfOtu9UoE=";
+    hash = "sha256-NOruMysLm0Pu2fsaA/qCNdeCTacomvJ51oqI8V2WFWI=";
   };
 
   build-system = [ poetry-core ];

From a09d8e9cda4f325e1be2e57ecd074dd96a474aea Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 09:09:09 +0000
Subject: [PATCH 047/107] nelua: 0-unstable-2024-08-04 -> 0-unstable-2024-09-22

---
 pkgs/development/interpreters/nelua/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/interpreters/nelua/default.nix b/pkgs/development/interpreters/nelua/default.nix
index 2022141daf37..bde0104e6c1b 100644
--- a/pkgs/development/interpreters/nelua/default.nix
+++ b/pkgs/development/interpreters/nelua/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "nelua";
-  version = "0-unstable-2024-08-04";
+  version = "0-unstable-2024-09-22";
 
   src = fetchFromGitHub {
     owner = "edubart";
     repo = "nelua-lang";
-    rev = "38c2d9ca14c992ddcd73f4067af8c6f37c550979";
-    hash = "sha256-mpKGD9YP+D+1ySq+8lyRjXwptWL+uBG/p37bHDBoTJ8=";
+    rev = "ff7a42c275239933f6e615b2ad2e6a8d507afe7b";
+    hash = "sha256-SQg7Z9Ag+UwIhrjgobAEiVEGu/GgFZKw3lquu4/4rHI=";
   };
 
   postPatch = ''

From 4ad5c9d942bdb77c456b428555993395cbef367d Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 09:31:40 +0000
Subject: [PATCH 048/107] zoom-us: 6.1.11.1545 -> 6.2.0.1855

---
 pkgs/by-name/zo/zoom-us/package.nix | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/pkgs/by-name/zo/zoom-us/package.nix b/pkgs/by-name/zo/zoom-us/package.nix
index 230825c93564..45e0effb8f35 100644
--- a/pkgs/by-name/zo/zoom-us/package.nix
+++ b/pkgs/by-name/zo/zoom-us/package.nix
@@ -48,23 +48,23 @@ let
   # and often with different versions.  We write them on three lines
   # like this (rather than using {}) so that the updater script can
   # find where to edit them.
-  versions.aarch64-darwin = "6.1.11.39163";
-  versions.x86_64-darwin = "6.1.11.39163";
-  versions.x86_64-linux = "6.1.11.1545";
+  versions.aarch64-darwin = "6.2.0.40111";
+  versions.x86_64-darwin = "6.2.0.40111";
+  versions.x86_64-linux = "6.2.0.1855";
 
   srcs = {
     aarch64-darwin = fetchurl {
       url = "https://zoom.us/client/${versions.aarch64-darwin}/zoomusInstallerFull.pkg?archType=arm64";
       name = "zoomusInstallerFull.pkg";
-      hash = "sha256-xWeCiDhYPfTAJttXG5bCwhLu+bmHlcFF/s3+EACeph4=";
+      hash = "sha256-/oi10pi9Xykmfo0UA1cDPzlB4xUQxAr8rkEoUpp1fQM=";
     };
     x86_64-darwin = fetchurl {
       url = "https://zoom.us/client/${versions.x86_64-darwin}/zoomusInstallerFull.pkg";
-      hash = "sha256-AB+QXx6r3raymVU7rEJ9dO4CqJI9tnRF3l61vuGnqpI=";
+      hash = "sha256-CZm0lrBYGHkPpdLu0sE/V+ADwglk/btSNvdzPRaeysI=";
     };
     x86_64-linux = fetchurl {
       url = "https://zoom.us/client/${versions.x86_64-linux}/zoom_x86_64.pkg.tar.xz";
-      hash = "sha256-wkG/fYbn3EdbVJwZQI8EcRPmHFX+4zggmfM4sHUjD8I=";
+      hash = "sha256-Ej8BRySQso62VE7e4XjXFGsvlB9cEVceha/WVhTBG4E=";
     };
   };
 

From b2b5981284c418b757d79a04ad4bf172fe4d1d2a Mon Sep 17 00:00:00 2001
From: John Titor <50095635+JohnRTitor@users.noreply.github.com>
Date: Tue, 24 Sep 2024 15:47:23 +0530
Subject: [PATCH 049/107] zed-editor: change pname to zed-editor

There are like three different packages with zed
---
 pkgs/by-name/ze/zed-editor/package.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/by-name/ze/zed-editor/package.nix b/pkgs/by-name/ze/zed-editor/package.nix
index cdc08c9ce90c..ab630cd1edc7 100644
--- a/pkgs/by-name/ze/zed-editor/package.nix
+++ b/pkgs/by-name/ze/zed-editor/package.nix
@@ -84,7 +84,7 @@ let
     };
 in
 rustPlatform.buildRustPackage rec {
-  pname = "zed";
+  pname = "zed-editor";
   version = "0.153.6";
 
   src = fetchFromGitHub {

From c1502f2434f0084b07c5ad34a421c84e29f3c7c3 Mon Sep 17 00:00:00 2001
From: Alexander Kiselyov <aleksandr.kiselyov@gmail.com>
Date: Fri, 20 Sep 2024 16:00:30 +0300
Subject: [PATCH 050/107] python3Packages.skyfield: 1.45 -> 1.49

---
 pkgs/development/python-modules/assay/default.nix    | 2 +-
 pkgs/development/python-modules/skyfield/default.nix | 8 +++-----
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/pkgs/development/python-modules/assay/default.nix b/pkgs/development/python-modules/assay/default.nix
index 4e6a4cb6b946..b71a3b9be090 100644
--- a/pkgs/development/python-modules/assay/default.nix
+++ b/pkgs/development/python-modules/assay/default.nix
@@ -7,7 +7,7 @@
 
 buildPythonPackage rec {
   pname = "assay";
-  version = "unstable-2024-05-09";
+  version = "0-unstable-2024-05-09";
   format = "setuptools";
 
   src = fetchFromGitHub {
diff --git a/pkgs/development/python-modules/skyfield/default.nix b/pkgs/development/python-modules/skyfield/default.nix
index d4d6fa3f1b96..8fe675eb5bed 100644
--- a/pkgs/development/python-modules/skyfield/default.nix
+++ b/pkgs/development/python-modules/skyfield/default.nix
@@ -16,14 +16,14 @@
 
 buildPythonPackage rec {
   pname = "skyfield";
-  version = "1.45";
+  version = "1.49";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "skyfielders";
     repo = "python-skyfield";
     rev = version;
-    hash = "sha256-kZrXNVE+JGPGiVsd6CTwOqfciYLsD2A4pTS3FpqO+Dk=";
+    hash = "sha256-PZ63sohdfpop3nYQr2RIMjPbrL9jdfincEhw5D8NZ+Y=";
   };
 
   # Fix broken tests on "exotic" platforms.
@@ -49,9 +49,7 @@ buildPythonPackage rec {
     assay
   ];
 
-  # assay is broken on Python >= 3.11
-  # https://github.com/brandon-rhodes/assay/issues/15
-  doCheck = pythonOlder "3.11";
+  doCheck = true;
 
   checkPhase = ''
     runHook preCheck

From a28f1df81f349fc74dfcc11633b600a4ad4b647d Mon Sep 17 00:00:00 2001
From: John Titor <50095635+JohnRTitor@users.noreply.github.com>
Date: Tue, 24 Sep 2024 16:22:36 +0530
Subject: [PATCH 051/107] zed-editor: rename zed binary to zeditor

At least three packages provide a "zed" binary including `zfs`, `spicedb-zed`, and `zed` binary which can lead to conflicts.

Renaming the `cli` binary to `zeditor` is even recommmeded in zed-editor official packaging instructions.

https://github.com/zed-industries/zed/blob/main/docs/src/development/linux.md#other-things-to-note
Signed-off-by: John Titor <50095635+JohnRTitor@users.noreply.github.com>
---
 pkgs/by-name/ze/zed-editor/package.nix | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/pkgs/by-name/ze/zed-editor/package.nix b/pkgs/by-name/ze/zed-editor/package.nix
index ab630cd1edc7..2088a1ac98f5 100644
--- a/pkgs/by-name/ze/zed-editor/package.nix
+++ b/pkgs/by-name/ze/zed-editor/package.nix
@@ -38,7 +38,7 @@
 assert withGLES -> stdenv.isLinux;
 
 let
-  executableName = "zed";
+  executableName = "zeditor";
   # Based on vscode.fhs
   # Zed allows for users to download and use extensions
   # which often include the usage of pre-built binaries.
@@ -218,7 +218,7 @@ rustPlatform.buildRustPackage rec {
 
     mkdir -p $out/bin $out/libexec
     cp target/${stdenv.hostPlatform.rust.cargoShortTarget}/release/zed $out/libexec/zed-editor
-    cp target/${stdenv.hostPlatform.rust.cargoShortTarget}/release/cli $out/bin/zed
+    cp target/${stdenv.hostPlatform.rust.cargoShortTarget}/release/cli $out/bin/zeditor
 
     install -D ${src}/crates/zed/resources/app-icon@2x.png $out/share/icons/hicolor/1024x1024@2x/apps/zed.png
     install -D ${src}/crates/zed/resources/app-icon.png $out/share/icons/hicolor/512x512/apps/zed.png
@@ -227,7 +227,7 @@ rustPlatform.buildRustPackage rec {
     # and https://github.com/zed-industries/zed/blob/v0.141.2/script/install.sh (final desktop file name)
     (
       export DO_STARTUP_NOTIFY="true"
-      export APP_CLI="zed"
+      export APP_CLI="zeditor"
       export APP_ICON="zed"
       export APP_NAME="Zed"
       export APP_ARGS="%U"
@@ -262,7 +262,7 @@ rustPlatform.buildRustPackage rec {
       GaetanLepage
       niklaskorz
     ];
-    mainProgram = "zed";
+    mainProgram = "zeditor";
     platforms = lib.platforms.all;
     # Currently broken on darwin: https://github.com/NixOS/nixpkgs/pull/303233#issuecomment-2048650618
     broken = stdenv.isDarwin;

From c6ecc28531aa4b37655c60982e2c68c5ce8b313d Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 11:55:38 +0000
Subject: [PATCH 052/107] nwg-panel: 0.9.38 -> 0.9.39

---
 pkgs/by-name/nw/nwg-panel/package.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/by-name/nw/nwg-panel/package.nix b/pkgs/by-name/nw/nwg-panel/package.nix
index 359d57cda5b0..bcd112b55cce 100644
--- a/pkgs/by-name/nw/nwg-panel/package.nix
+++ b/pkgs/by-name/nw/nwg-panel/package.nix
@@ -16,13 +16,13 @@
 
 python3Packages.buildPythonApplication rec {
   pname = "nwg-panel";
-  version = "0.9.38";
+  version = "0.9.39";
 
   src = fetchFromGitHub {
     owner = "nwg-piotr";
     repo = "nwg-panel";
     rev = "refs/tags/v${version}";
-    hash = "sha256-5vq/5QovvoDUDu9IiAeI9c06g0iy9YLi7CdpEhXbLqI=";
+    hash = "sha256-uXhhtE91BqYdTQjavOU5p0JoprFZTGCcxQr66iJixu4=";
   };
 
   # No tests

From 9823a84b091ab86e77fe71dc4224b1ae81454120 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 12:31:05 +0000
Subject: [PATCH 053/107] lxgw-neoxihei: 1.205 -> 1.206

---
 pkgs/by-name/lx/lxgw-neoxihei/package.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/by-name/lx/lxgw-neoxihei/package.nix b/pkgs/by-name/lx/lxgw-neoxihei/package.nix
index ecbbc032c1ec..f21511d10386 100644
--- a/pkgs/by-name/lx/lxgw-neoxihei/package.nix
+++ b/pkgs/by-name/lx/lxgw-neoxihei/package.nix
@@ -5,11 +5,11 @@
 
 stdenvNoCC.mkDerivation rec {
   pname = "lxgw-neoxihei";
-  version = "1.205";
+  version = "1.206";
 
   src = fetchurl {
     url = "https://github.com/lxgw/LxgwNeoXiHei/releases/download/v${version}/LXGWNeoXiHei.ttf";
-    hash = "sha256-86EengjzmhmEVm7yOovRF/oG7i8nlhzLL44N8j/nf9w=";
+    hash = "sha256-jsLQLD5dfzguFkk7Q3oHe5Jd6h+XA/Qkg9MqyqHQ8v4=";
   };
 
   dontUnpack = true;

From e948462c1d5749037002f87dbec1f9dd2808c2ac Mon Sep 17 00:00:00 2001
From: Arseniy Zorin <me@wrbbz.com>
Date: Tue, 24 Sep 2024 15:32:27 +0300
Subject: [PATCH 054/107] pulumi-bin: 3.133.0 -> 3.134.0

---
 pkgs/tools/admin/pulumi-bin/data.nix | 258 +++++++++++++--------------
 1 file changed, 129 insertions(+), 129 deletions(-)

diff --git a/pkgs/tools/admin/pulumi-bin/data.nix b/pkgs/tools/admin/pulumi-bin/data.nix
index b9ee4437d430..d7c88c80b03a 100644
--- a/pkgs/tools/admin/pulumi-bin/data.nix
+++ b/pkgs/tools/admin/pulumi-bin/data.nix
@@ -1,16 +1,16 @@
 # DO NOT EDIT! This file is generated automatically by update.sh
 { }:
 {
-  version = "3.133.0";
+  version = "3.134.0";
   pulumiPkgs = {
     x86_64-linux = [
       {
-        url = "https://get.pulumi.com/releases/sdk/pulumi-v3.133.0-linux-x64.tar.gz";
-        sha256 = "0yxlgy48i3b80f8y8nbgvq93i1qcz43ya2la6z5wfhj4cxc900rc";
+        url = "https://get.pulumi.com/releases/sdk/pulumi-v3.134.0-linux-x64.tar.gz";
+        sha256 = "0mrx8kkr09a90clhpc1km72w2xggf32ql6b48hyz2qxd8p83yi0r";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-aiven-v6.23.1-linux-amd64.tar.gz";
-        sha256 = "1dd5s4d07qlcikcc7m4yh41085diciq25md4g2m1n6wfy629sllv";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-aiven-v6.24.0-linux-amd64.tar.gz";
+        sha256 = "0fm7qx0jn7c60wpf5gar18xycwykl77lyma90mpiwcd0jiv9n7lc";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-akamai-v7.4.0-linux-amd64.tar.gz";
@@ -21,8 +21,8 @@
         sha256 = "1pq2xl59ady3id356gxp08ml7jdlzk4hm0rlq6dk9cn7v9nvj973";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-artifactory-v7.9.1-linux-amd64.tar.gz";
-        sha256 = "0pv5cl6wvgwvz17r2q4i4d0bmkxyvqn3yhid91bvxx1n11i0rb2y";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-artifactory-v8.0.0-linux-amd64.tar.gz";
+        sha256 = "0qmfv8avmbvkh2jva2wlghc5x3gi750jwcav88492lisk9ld8mhs";
       }
       {
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@@ -33,20 +33,20 @@
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-        sha256 = "0yzv3xyijma1sxvilf1bgqcc3d0hdcx6pfpzw2s0fix7pi25qszn";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azuread-v5.53.4-linux-amd64.tar.gz";
+        sha256 = "10ci5gj7abcp8rw6nkx1d3gj1f21j67h5g73ly5p3k83ki4ay3wm";
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         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azuredevops-v3.3.0-linux-amd64.tar.gz";
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-        sha256 = "1l7qibcbak0zmrzfrldqrhkfdvmankb8yflv6ak17y8434dfcrfa";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azure-v6.0.0-linux-amd64.tar.gz";
+        sha256 = "0rz7ksgn1z152kcsjlqapapv4ywy48vmqi31bnbgfkg9w4z92v75";
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-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-cloudflare-v5.38.0-linux-amd64.tar.gz";
-        sha256 = "1gn7m1wyx7qlvv8q2i64cybpzms92dbydnv4dw3gvdxq4l217w94";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-cloudflare-v5.39.0-linux-amd64.tar.gz";
+        sha256 = "0c8x02aw6zsrq6blkqc440fb0ngc5n0xpip87yr0xlc7axafys85";
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         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-consul-v3.12.1-linux-amd64.tar.gz";
@@ -73,32 +73,32 @@
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-        sha256 = "1rq8njkjzajwjbj7kgm1n12fblyvxj4ar04cb883si0d48015l1p";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gcp-v8.2.0-linux-amd64.tar.gz";
+        sha256 = "1vq4v3cf53zi8xw4k9ycnsj4hasx5jsc7n0334hh15kdz6rd9snr";
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-        sha256 = "0c454vzi55b272rbhpwy9bwrdlyip16fa5775rdlnp6zrwqxwzfs";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gitlab-v8.4.0-linux-amd64.tar.gz";
+        sha256 = "0fizv7mh652n0778446ly9hvb7zvpd79krhidmf6l5wz0aa1gr95";
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         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-google-native-v0.32.0-linux-amd64.tar.gz";
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-        sha256 = "1cr2rwv1k4myd4gdyb88v4vyqrlxkl2br4jrvnari7sklpb4kjz9";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-hcloud-v1.20.2-linux-amd64.tar.gz";
+        sha256 = "1fw9wa0qj44c3c3iankmzj46v4mvyjbynnq5h25irhxvzfvdkrii";
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       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-kubernetes-v4.18.1-linux-amd64.tar.gz";
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-        sha256 = "0paqwfdqjdd5cymrjfmx8qq8j26hgcjmy2zlgjp516psfvf645vp";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-linode-v4.27.1-linux-amd64.tar.gz";
+        sha256 = "0gq1mdlysvpv11xqjn3zxwk9av8bcyljjfbzf15hyrn9mx6ymrbq";
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         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-mailgun-v3.5.5-linux-amd64.tar.gz";
@@ -121,20 +121,20 @@
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-        sha256 = "0i9668mimdhm0aw0hjmg2ca2qycwilngz30mp2hjjlb2rv4mfgbk";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-snowflake-v0.59.0-linux-amd64.tar.gz";
+        sha256 = "1v317rlj7gmcdb74zlnmz668qn4d1ivl7dx81gw0lmqba73i1pdn";
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-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-spotinst-v3.91.0-linux-amd64.tar.gz";
-        sha256 = "1974ysq788i3g4xzgx16azwn71flypbpb378j0dpaz7z2phwa021";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-spotinst-v3.94.0-linux-amd64.tar.gz";
+        sha256 = "12livvv61dcj8ylkrff2mggc55hh7pc60raqzpx3bslr6x5h8ln9";
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-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-sumologic-v0.23.3-linux-amd64.tar.gz";
-        sha256 = "10d34620hkdqmflb24gs8hapf5apb45ribw695xz9pdwkhqrd3wp";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-sumologic-v0.23.4-linux-amd64.tar.gz";
+        sha256 = "02l5xxzsdjwxacrylviavlr7myspz46b3wvyar24vdqjm572ccjw";
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-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-tailscale-v0.17.0-linux-amd64.tar.gz";
-        sha256 = "13imgiw2lys6d4wdriqrzmgsszkkam8lg7c01nz6xcqr2lccf2xy";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-tailscale-v0.17.1-linux-amd64.tar.gz";
+        sha256 = "1i1g4sacapzq2mr9nivydjyagk03g6k42khsrm2mzziw91mwmjbm";
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         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-tls-v5.0.6-linux-amd64.tar.gz";
@@ -149,12 +149,12 @@
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-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-vsphere-v4.11.1-linux-amd64.tar.gz";
-        sha256 = "05xc1bm0bzqfwpakw9yrlh6dwm0zy3sq0vdhp4bnwrl2cmkwxp26";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-vsphere-v4.11.2-linux-amd64.tar.gz";
+        sha256 = "1dknp93vk8am0ghhpsa9pjymd6vkysnq3lfkcwzdq3i7n52lf36c";
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-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-wavefront-v3.1.3-linux-amd64.tar.gz";
-        sha256 = "1ng6z1bl5z362p4sc9mn1skrz40d05csbch7dpd2cqhi0n5kkkf8";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-wavefront-v3.1.4-linux-amd64.tar.gz";
+        sha256 = "0qz3vzgc9g4lwb7c0sdm075lcwjahqz6indnnma3ljbvpq3r92bq";
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       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-yandex-v0.13.0-linux-amd64.tar.gz";
@@ -163,12 +163,12 @@
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-        url = "https://get.pulumi.com/releases/sdk/pulumi-v3.133.0-darwin-x64.tar.gz";
-        sha256 = "1823lpgdn3q98nls7d967hfqsddkaawldcqcwiqw809qsr7786hq";
+        url = "https://get.pulumi.com/releases/sdk/pulumi-v3.134.0-darwin-x64.tar.gz";
+        sha256 = "1wqa9y1msnf8hdy7hi81b5g2jxyg3zifvnv9rrj00v39b3mj59b1";
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-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-aiven-v6.23.1-darwin-amd64.tar.gz";
-        sha256 = "0338m5b1c2lffg6xx6zv1dnawwyq3vqvgfmm43c2pklrwwka89v6";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-aiven-v6.24.0-darwin-amd64.tar.gz";
+        sha256 = "1zs9c6jrxkq11198mh3bc9q1vrcg0wbr12pz0yyhk6xmm3hjzq90";
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         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-akamai-v7.4.0-darwin-amd64.tar.gz";
@@ -179,8 +179,8 @@
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-        sha256 = "1nw8g4svrm2x26nxndfhk5rj0jjdjz02s6rgkvy364l517xfd84k";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-artifactory-v8.0.0-darwin-amd64.tar.gz";
+        sha256 = "0fnklssab01bl6i6khl1l7pbsswka7sa8cjnbkjclgbk4an6z4i2";
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         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-auth0-v3.7.1-darwin-amd64.tar.gz";
@@ -191,20 +191,20 @@
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-        sha256 = "16vkx1cnfzwyzsk7f9f794p6mg1ny8g5qxiy0825gd0prf8dzdm5";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azuread-v5.53.4-darwin-amd64.tar.gz";
+        sha256 = "13sii3q13rm56rp1bgpfc4w852h5zncx0cbs9j9hpb2ihayp28kf";
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         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azuredevops-v3.3.0-darwin-amd64.tar.gz";
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-        sha256 = "02czk2wwf03sswlqj4hrj83i2i53h4nclqrb3nlgzjgaal82ijv9";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azure-v6.0.0-darwin-amd64.tar.gz";
+        sha256 = "19sp73a7kfa89y37zf31m6by6qi8jh7zbrvv3b49nrhs38yxy02z";
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-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-cloudflare-v5.38.0-darwin-amd64.tar.gz";
-        sha256 = "0rnj0nvqazsmvb3wwkgiwnpcimzv86df6bw8ln5h7rjiqpb23mvk";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-cloudflare-v5.39.0-darwin-amd64.tar.gz";
+        sha256 = "0xv5225v5kpy68g6ff7qy7pvxhn8gih2jivlcf7xqnp8w2lpkg40";
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@@ -231,32 +231,32 @@
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-        sha256 = "03mkrnkqgqyy1d2mharbbd37kg98yd8jxl55rymcgdk12a515ayn";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gcp-v8.2.0-darwin-amd64.tar.gz";
+        sha256 = "032hbmgcw87x9dkzi6mq08gsnxs3hycf54mjs0gb2dqgvdzdch06";
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         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-github-v6.3.0-darwin-amd64.tar.gz";
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-        sha256 = "1f4wspm6h1a7qwy8wf0akbjvjj7di9a38my4ni9x4dw4hv87bmyq";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gitlab-v8.4.0-darwin-amd64.tar.gz";
+        sha256 = "1isidas89q439fc0s214khq73rr4q2pgv8dcy5rdvznpsircbgpr";
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         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-google-native-v0.32.0-darwin-amd64.tar.gz";
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-        sha256 = "0lkbzgp8kycnd2285zb90w6l0q5iigmjamxh4zrak86vrk4lnyz7";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-hcloud-v1.20.2-darwin-amd64.tar.gz";
+        sha256 = "0skgrgidd3ykdsr1rwblgv043p8c79spg9f3iq7dmsbsylrqi45b";
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         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-kubernetes-v4.18.1-darwin-amd64.tar.gz";
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-        sha256 = "03q47z5kprj6adsk7fshc7jclah6rwcw3jzlvkvy2hbr6li43364";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-linode-v4.27.1-darwin-amd64.tar.gz";
+        sha256 = "1wk7braq3c0bi0fzbc9734avmvcr9m81g1v0i2w691xdgavfdl8h";
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@@ -279,20 +279,20 @@
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-        sha256 = "0jnbcq4649mn52qmq52h1sndad9jch07rh9b3ahjm8b6lakviq87";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-snowflake-v0.59.0-darwin-amd64.tar.gz";
+        sha256 = "0azl4v8lrj62855lzjf9js7hgvirwsy9821vabwdfmd9pzl3x5bn";
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-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-spotinst-v3.91.0-darwin-amd64.tar.gz";
-        sha256 = "0jbl5avzhqs4phnfrwp8n0lq1m4lmvlzvyhjpcsrx4nb33740rhz";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-spotinst-v3.94.0-darwin-amd64.tar.gz";
+        sha256 = "07xcvfp02q3l0snf1cdx1a6r2jbqfa0c5nv9pwmq8vk9fsnjdh54";
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-        sha256 = "0791x9j63kq8cbh2gmgsmbaim6067df3i164kiwpm4y1l38f8yf6";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-sumologic-v0.23.4-darwin-amd64.tar.gz";
+        sha256 = "1yyyrkqy492ny1g7r588lwlj2v59ry0l0gbr3pwa465a3achx06s";
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-        sha256 = "0vbqwwqrx6s87m8ikngbhqwi207p6hs6ckapq9bivhjr2hl0vc8f";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-tailscale-v0.17.1-darwin-amd64.tar.gz";
+        sha256 = "19wla9irh7c9lfzfh97i15nz0p5m4fvr8cgzaz4q5rh39s6991kw";
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@@ -307,12 +307,12 @@
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-        sha256 = "1wj5zz7gc9c8f1yk1aycb55v6pdpdkm97x4yq7ig3gy1j0zx90pg";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-vsphere-v4.11.2-darwin-amd64.tar.gz";
+        sha256 = "0gnv7qqirx2h8090pk3b50i801aivwrb767aj45zvqprkw1cb7ni";
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-        sha256 = "0cxp9vabn3b5b50j46qx1m246k2w7f3cknkh8x308sbfg9lkgv98";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-wavefront-v3.1.4-darwin-amd64.tar.gz";
+        sha256 = "0h1ay2zpq8yll6w1myk3pjg2vvkhscsiqsjh1gwq2vp3xvd3m9j8";
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@@ -321,12 +321,12 @@
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-        sha256 = "1fn37w2ad5bla6lpzvk2f8rbm9wcpfmf6nrdgbwm3lfyml0sijcq";
+        url = "https://get.pulumi.com/releases/sdk/pulumi-v3.134.0-linux-arm64.tar.gz";
+        sha256 = "1sxn8dazy00k4bdrkm4nry39vy37x83brvsc4vp43iwxzr871r69";
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-        sha256 = "1hzxmw420rzlka6wvr9b7gljyxdngbff4bcpdsaj6672isl2zy5v";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-aiven-v6.24.0-linux-arm64.tar.gz";
+        sha256 = "04v62zajw402d4x37y6056w84vy3flv0svh3ds0riq4h5rj6kzfx";
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@@ -337,8 +337,8 @@
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-        sha256 = "1wwmbg6zi5w6625pjmpbqvlw8kjj02vd1fxldl56hdwq8l0qlc71";
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@@ -349,20 +349,20 @@
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       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azuread-v5.53.3-linux-arm64.tar.gz";
-        sha256 = "0p16833m7igpz7b6p05clcf6qk5jj10iqrdm8wkdj7zv9q1v60hk";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azuread-v5.53.4-linux-arm64.tar.gz";
+        sha256 = "0ry0jqhisgg5cqyl3051fd32zm0dnpjhkbnyizfkb01m1clh185q";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azuredevops-v3.3.0-linux-arm64.tar.gz";
         sha256 = "08hd9b9vbbcx15bpb7vlrsjkw9ak7sjarqlxv4sx1fzys682nwra";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azure-v5.89.0-linux-arm64.tar.gz";
-        sha256 = "0ciadynvqc0pkmy9w7zj65zbc7w6rbsnz5b6iaszlyqp9rzwahg2";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azure-v6.0.0-linux-arm64.tar.gz";
+        sha256 = "0wkyy8zm38sh4mybyix4ncwn1qbv03szgc4iqw17qfc4xmi867bz";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-cloudflare-v5.38.0-linux-arm64.tar.gz";
-        sha256 = "0pv5av9471mlgv18k9pz977awnrc86zfm86bb1hkgbsgnpzxnxjd";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-cloudflare-v5.39.0-linux-arm64.tar.gz";
+        sha256 = "1hgnvnq5s2raqjhwyhp8d42nk9avbjik7g1pgxa7zik5l0aix24c";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-consul-v3.12.1-linux-arm64.tar.gz";
@@ -389,32 +389,32 @@
         sha256 = "0gafajkj6zskxghjsbskyqlnyy70y7z22vkihn00h7lh0i71q97g";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gcp-v8.1.0-linux-arm64.tar.gz";
-        sha256 = "1wjpp49xwhz45xwim67hfgbifvxr29mghv7zvxss24lfyps3f9k4";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gcp-v8.2.0-linux-arm64.tar.gz";
+        sha256 = "0wp38q4bpn1qsd7ppkvz58cfvl20467csbx8f1xy1msw7y4dfphz";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-github-v6.3.0-linux-arm64.tar.gz";
         sha256 = "14jsk2s02idmfi8m832l62gx34g466zvw78z3g9pabnn4igr9ixz";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gitlab-v8.3.1-linux-arm64.tar.gz";
-        sha256 = "1vrnss7x1bcvx5f4mirvhqvi15dw3w0bylbgpk7imsaazv6ylfyz";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gitlab-v8.4.0-linux-arm64.tar.gz";
+        sha256 = "060bmnd8c2xzkhd8g4l4rc0dmzc3p168wzx67pfzymvac7knkynf";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-google-native-v0.32.0-linux-arm64.tar.gz";
         sha256 = "0d8m2krbzxjhfm82dgf8p4vm3kk9gk98l798q4ayjrddqqb4mxq4";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-hcloud-v1.20.1-linux-arm64.tar.gz";
-        sha256 = "00ip2mi0hizfcvrmhq609ppghxpw50nihq0gaxl6lw9a7983ai97";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-hcloud-v1.20.2-linux-arm64.tar.gz";
+        sha256 = "0fznaaas1a5849pizql7r2xw5jsagc1j97hg3i7cy6y8jrbvvp37";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-kubernetes-v4.18.1-linux-arm64.tar.gz";
         sha256 = "04vxicmfwi72irkl5rp3jvj4qpxxz49z5fhgnfirhj5kksb6cggz";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-linode-v4.27.0-linux-arm64.tar.gz";
-        sha256 = "1xxg7d3rzp6gd56qd3zggyq6yjq460iipz9c28s3r34p4s1mr4sx";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-linode-v4.27.1-linux-arm64.tar.gz";
+        sha256 = "1zs0v7206hxs8h1vd5f9bzlk7vz0v91sgwdsj9jir1gwd1six0km";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-mailgun-v3.5.5-linux-arm64.tar.gz";
@@ -437,20 +437,20 @@
         sha256 = "0a1r87a9vp1sm4q7bxhgisrypyfi1p7hvh3c15yx22ylrmgwd83n";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-snowflake-v0.58.0-linux-arm64.tar.gz";
-        sha256 = "11racnb583bfsi3id7mqf8bjnwxl83a252y1lxbz3wy4bpqdzz4b";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-snowflake-v0.59.0-linux-arm64.tar.gz";
+        sha256 = "033jmnkp92bid7jiwy1jzn6l18qg5lncmsrpjdnwwxlqb2mr7ml6";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-spotinst-v3.91.0-linux-arm64.tar.gz";
-        sha256 = "11sf43q4djd1yk0cf7ypv5ypcjc62dibhb8g1p5dg2qcbdlkc551";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-spotinst-v3.94.0-linux-arm64.tar.gz";
+        sha256 = "04f0ndwchrznq0a9vw7jvll46a69mkk2p9snlqlqsl29n89awdfm";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-sumologic-v0.23.3-linux-arm64.tar.gz";
-        sha256 = "14hsny87inyvays04khhan9kg0a0kfi2x085yrqs6cy8pnshx29w";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-sumologic-v0.23.4-linux-arm64.tar.gz";
+        sha256 = "0lsbqgi5v4wpd0h9d73x9fx2xyrllvm1gfam3ks17pf2w1lkdd15";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-tailscale-v0.17.0-linux-arm64.tar.gz";
-        sha256 = "1qbqqg8dhc3hs1rmf0gwzvys0izqbmfwhjr85qbydar5ydwapwx8";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-tailscale-v0.17.1-linux-arm64.tar.gz";
+        sha256 = "1v9bw8zxlzg6zsqncbl0kl4xqph41940s61lp1fnsksa9jylbs3d";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-tls-v5.0.6-linux-arm64.tar.gz";
@@ -465,12 +465,12 @@
         sha256 = "11rcd6whkn8d21h1y37h15ih4wpdjmbyp2kf8x4150wq8s7cxgrc";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-vsphere-v4.11.1-linux-arm64.tar.gz";
-        sha256 = "11yb5bv4ra9a28g4ns4pmzmf0ax280j6hxwh2p2nrkxxd3p8a6ai";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-vsphere-v4.11.2-linux-arm64.tar.gz";
+        sha256 = "03kbh0807pmwkiz558sw704gv2grba51vdjy3i8wpn6viani9n7r";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-wavefront-v3.1.3-linux-arm64.tar.gz";
-        sha256 = "1hfyy6fm2vr10qrbawr3c7jb4fd1k3a0y55iff4f2dkpm23gsg9s";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-wavefront-v3.1.4-linux-arm64.tar.gz";
+        sha256 = "0nj8k7x0kbsqd5mc83wsb3q0b0v91zsakpr49h6p7cjjwkcxmchi";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-yandex-v0.13.0-linux-arm64.tar.gz";
@@ -479,12 +479,12 @@
     ];
     aarch64-darwin = [
       {
-        url = "https://get.pulumi.com/releases/sdk/pulumi-v3.133.0-darwin-arm64.tar.gz";
-        sha256 = "1y8jm0vi1f0rjmj2vx345a64szx752nj80kn8nxsk4k48ywx0ggi";
+        url = "https://get.pulumi.com/releases/sdk/pulumi-v3.134.0-darwin-arm64.tar.gz";
+        sha256 = "1np5vqzjrb5namcbr69j3gry53gsvd6wz0l94wzy6mldhygrc9g5";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-aiven-v6.23.1-darwin-arm64.tar.gz";
-        sha256 = "1jms955rhkw8babbbdkniic3qqc1g7jsddp322c5di2x4863qs2x";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-aiven-v6.24.0-darwin-arm64.tar.gz";
+        sha256 = "1mxa1sdvb6dp7lk27jbi8alvnai9psg24vdxxc2cwbgqsml9fw9s";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-akamai-v7.4.0-darwin-arm64.tar.gz";
@@ -495,8 +495,8 @@
         sha256 = "108qc3nm58sp43b39xzg1nz6vglpcyyjvqxy489pj42grk0w1lw4";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-artifactory-v7.9.1-darwin-arm64.tar.gz";
-        sha256 = "0sfwvz38202fxk6qvai7jnd3bq183cvhsh1kgw4a88anaqis640k";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-artifactory-v8.0.0-darwin-arm64.tar.gz";
+        sha256 = "1sk3bjw4g788gpqqzl3rqdf5i6r7pqj7bfq5kf9ksk03rvrgfsss";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-auth0-v3.7.1-darwin-arm64.tar.gz";
@@ -507,20 +507,20 @@
         sha256 = "13d33lvlhka2900acq7aksqnyvcyfhcb9cazj4dllrs71kj1smx3";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azuread-v5.53.3-darwin-arm64.tar.gz";
-        sha256 = "13r7yzgj4lbsvsw9y1fxc5n6dhral0763ny8mahxhj3cl6mmxvi7";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azuread-v5.53.4-darwin-arm64.tar.gz";
+        sha256 = "1zbvcfplwrbxr0jmwrl8sqz31q5j05x5ss6v2j04zzjb3qmj0b94";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azuredevops-v3.3.0-darwin-arm64.tar.gz";
         sha256 = "1f9zy9rl8vmnc40p6cvcz3d5wrf52y5a798ljp87kmjmra0mglg3";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azure-v5.89.0-darwin-arm64.tar.gz";
-        sha256 = "1vs8xhy7iqfadfi2397jwfnz099pqyz5js4g4mx7kw1v47bsbvdq";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-azure-v6.0.0-darwin-arm64.tar.gz";
+        sha256 = "0fyzahxqgzmb9v0qvikdak38qhwsbzmv1mrrvd8s611a2f2xw2zp";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-cloudflare-v5.38.0-darwin-arm64.tar.gz";
-        sha256 = "1b833d49z3h4cnf35qgill4rnixh6mfswk0g70qzv83jm9gvw9gz";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-cloudflare-v5.39.0-darwin-arm64.tar.gz";
+        sha256 = "1xpv6mg0vbg6h91sg14qjn3ngl3l3dan2j31lqc5pmbhn16crs2z";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-consul-v3.12.1-darwin-arm64.tar.gz";
@@ -547,32 +547,32 @@
         sha256 = "1pm7vggaqsb8yrpk2swzpn6bm9jsqddf7cmx26sw0vd73shhmkd0";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gcp-v8.1.0-darwin-arm64.tar.gz";
-        sha256 = "1bgh5bym2f2l1s0pvvvs5fpf1qcvdvsnxf8d81346cfnk7qjw5jx";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gcp-v8.2.0-darwin-arm64.tar.gz";
+        sha256 = "109jpb4j34dm39wvwarggz832hs2zvnmbnakrql8rqgi5rwql2i7";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-github-v6.3.0-darwin-arm64.tar.gz";
         sha256 = "0jmdqpajx5c1nnc01qwyjp8gil71wp3k2ddj7ac2vh4m75341ki9";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gitlab-v8.3.1-darwin-arm64.tar.gz";
-        sha256 = "0r4j9mvzqv62b6cf40hh4w5mgpkqq82khsmjzij8djjcd86gn7i0";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-gitlab-v8.4.0-darwin-arm64.tar.gz";
+        sha256 = "0q53mglqhpnr5qc4hj21n3nh3kyjfbnqs5n8k5xkam1lfvpmmcw6";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-google-native-v0.32.0-darwin-arm64.tar.gz";
         sha256 = "0caz4kgnnrmdr7n571xc7yqscac9jnjwwpjzbnvx4ib6a91wvsdn";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-hcloud-v1.20.1-darwin-arm64.tar.gz";
-        sha256 = "19shjz66ybjkcij72bhknsnxgpg8acnv6vp1lkmxd39s5g87ajv0";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-hcloud-v1.20.2-darwin-arm64.tar.gz";
+        sha256 = "0jb0kixyv3cnkz1v1dhgn62qjy4pyvg2bl7hxirj1kxi7q3xdi78";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-kubernetes-v4.18.1-darwin-arm64.tar.gz";
         sha256 = "1gndidz869h2i6ig47a42nvqvzhsj8zzq9qlmb9z87gn2hxqfg69";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-linode-v4.27.0-darwin-arm64.tar.gz";
-        sha256 = "194h7v4wrpmqk3494n75yn9y042ayg5xffghixqgq3h6pf1d2y9g";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-linode-v4.27.1-darwin-arm64.tar.gz";
+        sha256 = "1hn7hhylnjw80gkqnxxdy9addypspk2fdb6rnq7y9zzjyk3ykycc";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-mailgun-v3.5.5-darwin-arm64.tar.gz";
@@ -595,20 +595,20 @@
         sha256 = "0nsgv18wdkyjrr9wq6qdd07bcjy9jr5206ncz84xhar47iaw1m16";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-snowflake-v0.58.0-darwin-arm64.tar.gz";
-        sha256 = "0p9lcg7wjjsgj8slg5vxd6jdjdwk36pdfdk87w450zm7k0ymfzq1";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-snowflake-v0.59.0-darwin-arm64.tar.gz";
+        sha256 = "1iidb02qq295xhwy48ya07xxdhhfb28ddppxvl88xxk03mfc03f4";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-spotinst-v3.91.0-darwin-arm64.tar.gz";
-        sha256 = "02fqsg8vvfl1xcb7s5waa9ysfl57i6307wzgwsw2y156jdbl2xkn";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-spotinst-v3.94.0-darwin-arm64.tar.gz";
+        sha256 = "1vhlfgsfd3h79w992r9i2pqxfra93q386wcg73x0xhbx4xsrfqf6";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-sumologic-v0.23.3-darwin-arm64.tar.gz";
-        sha256 = "0ij18wxlhy84hwjwh0h0yf0jl3zpky66a15v6y0gh9w9sn5ng47f";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-sumologic-v0.23.4-darwin-arm64.tar.gz";
+        sha256 = "0hfak60820z50xhw3kfdvm0shcwxi7y9xxp6iid5r1gk2a0vhaxk";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-tailscale-v0.17.0-darwin-arm64.tar.gz";
-        sha256 = "1vpbar4a93fn6kbms0nahqgj256x97cvn9kyv48v8hs4cxa7n0qr";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-tailscale-v0.17.1-darwin-arm64.tar.gz";
+        sha256 = "0zwv4v9kv9s3kfqhzvdfr9qjn5mw1yaswa2zjandr45pfyz50abg";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-tls-v5.0.6-darwin-arm64.tar.gz";
@@ -623,12 +623,12 @@
         sha256 = "103jidsyp9px082yg00cf57jps1iz96cjy7p9a5hrwvjf17m75mz";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-vsphere-v4.11.1-darwin-arm64.tar.gz";
-        sha256 = "1329dc2jqwqdxlfrx214jmxji01kzny3rj5hh137yipkvfkrfzkf";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-vsphere-v4.11.2-darwin-arm64.tar.gz";
+        sha256 = "0b4jl4sn0ymwb304czlp7rqw1dkmhjqf6fn2b4n3sk4l9frgzbyn";
       }
       {
-        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-wavefront-v3.1.3-darwin-arm64.tar.gz";
-        sha256 = "160cif97xqh3va114kqwsz6666rspwwhk965c1k0ab4kxdhiwjdm";
+        url = "https://api.pulumi.com/releases/plugins/pulumi-resource-wavefront-v3.1.4-darwin-arm64.tar.gz";
+        sha256 = "0wr64m509ayhbh7877zj3i3dmry4bf1625cfzq7f35qip3yczarx";
       }
       {
         url = "https://api.pulumi.com/releases/plugins/pulumi-resource-yandex-v0.13.0-darwin-arm64.tar.gz";

From 2aea8cf19d4cd49c54bcb147c4a9c60cb20d89c8 Mon Sep 17 00:00:00 2001
From: eymeric <eymericdechelette@gmail.com>
Date: Tue, 24 Sep 2024 14:35:13 +0200
Subject: [PATCH 055/107] insomnia: 9.0.0 -> 10.0.0

---
 pkgs/development/web/insomnia/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/web/insomnia/default.nix b/pkgs/development/web/insomnia/default.nix
index 9317dbe8f4e9..e40ae3c9ba34 100644
--- a/pkgs/development/web/insomnia/default.nix
+++ b/pkgs/development/web/insomnia/default.nix
@@ -6,16 +6,16 @@
 }:
 let
   pname = "insomnia";
-  version = "9.0.0";
+  version = "10.0.0";
 
   src = fetchurl {
     x86_64-darwin = {
       url = "https://github.com/Kong/insomnia/releases/download/core%40${version}/Insomnia.Core-${version}.dmg";
-      hash = "sha256-QIArPdThQcNTUgrXpWP8JHaZfrZ/6ztekIvzFdoWjsY=";
+      hash = "sha256-HYEZzLDV2T4ugCjIeskS5SkrQlu5nQt1S0RG9R/rlcs=";
     };
     x86_64-linux = {
       url = "https://github.com/Kong/insomnia/releases/download/core%40${version}/Insomnia.Core-${version}.AppImage";
-      hash = "sha256-2UiqopYmNxnDcIqQMn/H89ugvOtTWkHH4LrmKkQErSs=";
+      hash = "sha256-hElisKB1C1By8lCCgNqNr6bIOMKqMG3UyBQ6jYu8yNg=";
     };
   }.${stdenv.system} or (throw "Unsupported system: ${stdenv.system}");
 

From 4f973917c76c64dc723bedaeae4dea79b0a0e810 Mon Sep 17 00:00:00 2001
From: Phillip Seeber <phillip.seeber@uni-jena.de>
Date: Tue, 24 Sep 2024 11:49:47 +0200
Subject: [PATCH 056/107] wxmacmolplt: add wrapGAppsHook for non GTK desktops

---
 pkgs/applications/science/chemistry/wxmacmolplt/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/science/chemistry/wxmacmolplt/default.nix b/pkgs/applications/science/chemistry/wxmacmolplt/default.nix
index ae6c0df87905..0ec45053bf67 100644
--- a/pkgs/applications/science/chemistry/wxmacmolplt/default.nix
+++ b/pkgs/applications/science/chemistry/wxmacmolplt/default.nix
@@ -7,6 +7,7 @@
 , pkg-config
 , xorg
 , autoreconfHook
+, wrapGAppsHook4
 }:
 
 stdenv.mkDerivation rec {
@@ -20,7 +21,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-gFGstyq9bMmBaIS4QE6N3EIC9GxRvyJYUr8DUvwRQBc=";
   };
 
-  nativeBuildInputs = [ pkg-config autoreconfHook ];
+  nativeBuildInputs = [ pkg-config autoreconfHook wrapGAppsHook4 ];
   buildInputs = [
     wxGTK32
     libGL

From 34c68eb443b7559ca318dfafa84f9f06d938d21f Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 14:28:56 +0000
Subject: [PATCH 057/107] markdownlint-cli: 0.41.0 -> 0.42.0

---
 pkgs/tools/text/markdownlint-cli/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/tools/text/markdownlint-cli/default.nix b/pkgs/tools/text/markdownlint-cli/default.nix
index 12b19d3a7165..c0371f186675 100644
--- a/pkgs/tools/text/markdownlint-cli/default.nix
+++ b/pkgs/tools/text/markdownlint-cli/default.nix
@@ -5,16 +5,16 @@
 
 buildNpmPackage rec {
   pname = "markdownlint-cli";
-  version = "0.41.0";
+  version = "0.42.0";
 
   src = fetchFromGitHub {
     owner = "igorshubovych";
     repo = "markdownlint-cli";
     rev = "v${version}";
-    hash = "sha256-qRbfOxMCm5pUAi0KHookOOnKaTShBUkTkrqZX4QGezk=";
+    hash = "sha256-bT/6bRzpXa86e6T0bJSUm624dbRAux4qgmCc+lOtl3c=";
   };
 
-  npmDepsHash = "sha256-UwyjaEKYA81J0DR2yFqYVp4e7l3Jol/R8hgaijNpBaU=";
+  npmDepsHash = "sha256-g2+kieF+cq8olfQ5rElNNvp5NYJcg+eTNWnMxSXqlKk=";
 
   dontNpmBuild = true;
 

From f06db00ca46f8a0fdda6d54688d9d787f7b4443c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christina=20S=C3=B8rensen?= <christina@cafkafk.com>
Date: Tue, 24 Sep 2024 16:37:50 +0200
Subject: [PATCH 058/107] usb-modeswitch: set `mainProgram`
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Christina Sørensen <christina@cafkafk.com>
---
 pkgs/development/tools/misc/usb-modeswitch/default.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/tools/misc/usb-modeswitch/default.nix b/pkgs/development/tools/misc/usb-modeswitch/default.nix
index 0befa7aac9d6..474de7100486 100644
--- a/pkgs/development/tools/misc/usb-modeswitch/default.nix
+++ b/pkgs/development/tools/misc/usb-modeswitch/default.nix
@@ -45,5 +45,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2;
     maintainers = with maintainers; [ marcweber peterhoeg ];
     platforms = platforms.linux;
+    mainProgram = "usb_modeswitch";
   };
 }

From 471b57a2549fdc79d14b9fa6ebb53f2f42027479 Mon Sep 17 00:00:00 2001
From: Alex Jackson <contact@ajaxbits.com>
Date: Sun, 22 Sep 2024 17:47:13 -0500
Subject: [PATCH 059/107] python3Packages.confusable-homoglyphs: init at 3.3.1

---
 .../confusable-homoglyphs/default.nix         | 54 +++++++++++++++++++
 pkgs/top-level/python-packages.nix            |  2 +
 2 files changed, 56 insertions(+)
 create mode 100644 pkgs/development/python-modules/confusable-homoglyphs/default.nix

diff --git a/pkgs/development/python-modules/confusable-homoglyphs/default.nix b/pkgs/development/python-modules/confusable-homoglyphs/default.nix
new file mode 100644
index 000000000000..109bf574c11e
--- /dev/null
+++ b/pkgs/development/python-modules/confusable-homoglyphs/default.nix
@@ -0,0 +1,54 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchPypi,
+  pytestCheckHook,
+  pythonOlder,
+  setuptools,
+  click,
+}:
+
+let
+  libName = "confusable-homoglyphs";
+  snakeLibName = builtins.replaceStrings [ "-" ] [ "_" ] libName;
+in
+buildPythonPackage rec {
+  pname = libName;
+  version = "3.3.1";
+  pyproject = true;
+
+  src = fetchPypi {
+    inherit version;
+    pname = snakeLibName;
+    hash = "sha256-uZUAHJsuG0zqDPXzhAp8eRiKjLutBT1pNXK9jBwexGA=";
+  };
+
+  build-system = [ setuptools ];
+
+  disabled = pythonOlder "3.7";
+
+  optional-dependencies = {
+    cli = [ click ];
+  };
+
+  pythonImportsCheck = [ snakeLibName ];
+
+  nativeCheckInputs = [ pytestCheckHook ] ++ optional-dependencies.cli;
+
+  disabledTests = [
+    "test_generate_categories" # touches network
+    "test_generate_confusables" # touches network
+  ];
+
+  meta =
+    let
+      inherit (lib) licenses maintainers;
+    in
+    {
+      description = "Detect confusable usage of unicode homoglyphs, prevent homograph attacks";
+      homepage = "https://sr.ht/~valhalla/confusable_homoglyphs/";
+      changelog = "https://confusable-homoglyphs.readthedocs.io/en/latest/history.html";
+      license = licenses.mit;
+      maintainers = with maintainers; [ ajaxbits ];
+    };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 6b165d64e4eb..737e85890e3a 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2475,6 +2475,8 @@ self: super: with self; {
 
   confuse = callPackage ../development/python-modules/confuse { };
 
+  confusable-homoglyphs = callPackage ../development/python-modules/confusable-homoglyphs { };
+
   confight = callPackage ../development/python-modules/confight { };
 
   connexion = callPackage ../development/python-modules/connexion { };

From 653f60bca3504e79b7aa43db498baea8b96d09a2 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 15:25:36 +0000
Subject: [PATCH 060/107] python312Packages.easyocr: 1.7.1 -> 1.7.2

---
 pkgs/development/python-modules/easyocr/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/easyocr/default.nix b/pkgs/development/python-modules/easyocr/default.nix
index 170ff96c35c8..a1ff17f2b360 100644
--- a/pkgs/development/python-modules/easyocr/default.nix
+++ b/pkgs/development/python-modules/easyocr/default.nix
@@ -20,7 +20,7 @@
 
 buildPythonPackage rec {
   pname = "easyocr";
-  version = "1.7.1";
+  version = "1.7.2";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -29,7 +29,7 @@ buildPythonPackage rec {
     owner = "JaidedAI";
     repo = "EasyOCR";
     rev = "refs/tags/v${version}";
-    hash = "sha256-EiiJ2LJ3uYIvgPd2y25MraV5kTa47JalDR7SLbkM9UI=";
+    hash = "sha256-9mrAxt2lphYtLW81lGO5SYHsnMnSA/VpHiY2NffD/Js=";
   };
 
   postPatch = ''

From 194b237e428dbaf06240c12ab1d3b060faac45ca Mon Sep 17 00:00:00 2001
From: Adam Stephens <adam@valkor.net>
Date: Tue, 24 Sep 2024 11:43:54 -0400
Subject: [PATCH 061/107] ollama: fix rocm build

upstream added this extra cp, but it fails because it has already copied over the required symlinks. since we provide our own runtime anyway, i'm not sure what value this has regardless.

+ for dep in $(ldd "${BUILD_DIR}/bin/ollama_llama_server" | grep "=>" | cut -f2 -d= | cut -f2 -d' ' | grep -v "${GOARCH}/rocm${ROCM_VARIANT}" | grep -e rocm -e amdgpu -e libtinfo -e libnuma -e libelf)
+ cp -a /nix/store/d7wl4hnydqbqc2j1qg29sybpc614wkz8-rocm-path/lib/libhipblas.so.2 /nix/store/d7wl4hnydqbqc2j1qg29sybpc614wkz8-rocm-path/lib/libhipblas.so.2.0 ../../dist/linux-amd64//../linux-amd64-rocm/lib/ollama
++ readlink -f /nix/store/d7wl4hnydqbqc2j1qg29sybpc614wkz8-rocm-path/lib/libhipblas.so.2
+ '[' /nix/store/2c04lrnax0x0jcdrdins3wykm1lb1360-hipblas-6.0.2/lib/libhipblas.so.2.0 '!=' /nix/store/d7wl4hnydqbqc2j1qg29sybpc614wkz8-rocm-path/lib/libhipblas.so.2 ']'
++ readlink -f /nix/store/d7wl4hnydqbqc2j1qg29sybpc614wkz8-rocm-path/lib/libhipblas.so.2
+ cp /nix/store/2c04lrnax0x0jcdrdins3wykm1lb1360-hipblas-6.0.2/lib/libhipblas.so.2.0 ../../dist/linux-amd64//../linux-amd64-rocm/lib/ollama
cp: '/nix/store/2c04lrnax0x0jcdrdins3wykm1lb1360-hipblas-6.0.2/lib/libhipblas.so.2.0' and '../../dist/linux-amd64//../linux-amd64-rocm/lib/ollama/libhipblas.so.2.0' are the same file
---
 pkgs/by-name/ol/ollama/package.nix        |  3 +++
 pkgs/by-name/ol/ollama/skip-rocm-cp.patch | 14 ++++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 pkgs/by-name/ol/ollama/skip-rocm-cp.patch

diff --git a/pkgs/by-name/ol/ollama/package.nix b/pkgs/by-name/ol/ollama/package.nix
index f16103382494..0bffd4684ca2 100644
--- a/pkgs/by-name/ol/ollama/package.nix
+++ b/pkgs/by-name/ol/ollama/package.nix
@@ -157,6 +157,9 @@ goBuild {
     # this also disables necessary patches contained in `ollama/llm/patches/`
     # those patches are applied in `postPatch`
     ./disable-git.patch
+
+    # we provide our own deps at runtime
+    ./skip-rocm-cp.patch
   ];
 
   postPatch = ''
diff --git a/pkgs/by-name/ol/ollama/skip-rocm-cp.patch b/pkgs/by-name/ol/ollama/skip-rocm-cp.patch
new file mode 100644
index 000000000000..672b3f24b497
--- /dev/null
+++ b/pkgs/by-name/ol/ollama/skip-rocm-cp.patch
@@ -0,0 +1,14 @@
+diff --git a/llm/generate/gen_linux.sh b/llm/generate/gen_linux.sh
+index 48d08fd0..e50f7b36 100755
+--- a/llm/generate/gen_linux.sh
++++ b/llm/generate/gen_linux.sh
+@@ -284,9 +284,6 @@ if [ -z "${OLLAMA_SKIP_ROCM_GENERATE}" -a -d "${ROCM_PATH}" ]; then
+     mkdir -p "${ROCM_DIST_DIR}"
+     for dep in $(ldd "${BUILD_DIR}/bin/ollama_llama_server" | grep "=>" | cut -f2 -d= | cut -f2 -d' ' | grep -v "${GOARCH}/rocm${ROCM_VARIANT}" | grep -e rocm -e amdgpu -e libtinfo -e libnuma -e libelf ); do
+         cp -a "${dep}"* "${ROCM_DIST_DIR}"
+-        if [ $(readlink -f "${dep}") != "${dep}" ] ; then
+-            cp $(readlink -f "${dep}") "${ROCM_DIST_DIR}"
+-        fi
+     done
+     install
+     dist

From 20e6612a76919b3d8e8b164c9d0c6c69355cb29b Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 15:57:34 +0000
Subject: [PATCH 062/107] python312Packages.myst-nb: 1.1.1 -> 1.1.2

---
 pkgs/development/python-modules/myst-nb/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/myst-nb/default.nix b/pkgs/development/python-modules/myst-nb/default.nix
index 97628a5e3e87..520919e7fa46 100644
--- a/pkgs/development/python-modules/myst-nb/default.nix
+++ b/pkgs/development/python-modules/myst-nb/default.nix
@@ -19,7 +19,7 @@
 
 buildPythonPackage rec {
   pname = "myst-nb";
-  version = "1.1.1";
+  version = "1.1.2";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -27,7 +27,7 @@ buildPythonPackage rec {
   src = fetchPypi {
     inherit version;
     pname = "myst_nb";
-    hash = "sha256-dCJ8EfdtA0lPQ7d4hlmxYblPTe3vIwopEkEryMPJ5VM=";
+    hash = "sha256-lhtABWVwKcqJiSpMde2/CFbFTOr2FyNotGv3Z2wfdwA=";
   };
 
   nativeBuildInputs = [ flit-core ];

From 48d6e1118b3c88bfba83664274bb12e55c29159f Mon Sep 17 00:00:00 2001
From: Philip Taron <philip.taron@gmail.com>
Date: Tue, 24 Sep 2024 09:08:43 -0700
Subject: [PATCH 063/107] nixos/services.snapserver: fix regression introduced
 in #339099 by renaming local function

---
 nixos/modules/services/audio/snapserver.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/nixos/modules/services/audio/snapserver.nix b/nixos/modules/services/audio/snapserver.nix
index 6c60fc2d4875..20186016afd7 100644
--- a/nixos/modules/services/audio/snapserver.nix
+++ b/nixos/modules/services/audio/snapserver.nix
@@ -30,12 +30,12 @@ let
         lib.optionalString (val != null) "${val}";
       os' = prefix: val:
         lib.optionalString (val != null) (prefix + "${val}");
-      flatten = key: value:
+      toQueryString = key: value:
         "&${key}=${value}";
     in
       "--stream.stream=\"${opt.type}://" + os opt.location + "?" + os' "name=" name
         + os' "&sampleformat=" opt.sampleFormat + os' "&codec=" opt.codec
-        + lib.concatStrings (lib.mapAttrsToList lib.flatten opt.query) + "\"";
+        + lib.concatStrings (lib.mapAttrsToList toQueryString opt.query) + "\"";
 
   optionalNull = val: ret:
     lib.optional (val != null) ret;

From 4df98489375638b8e367bcd5962ae6c8accb4d9b Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 16:13:37 +0000
Subject: [PATCH 064/107] python312Packages.asyncinotify: 4.0.9 -> 4.1.0

---
 pkgs/development/python-modules/asyncinotify/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/asyncinotify/default.nix b/pkgs/development/python-modules/asyncinotify/default.nix
index 24837d824d6c..c144b7da381f 100644
--- a/pkgs/development/python-modules/asyncinotify/default.nix
+++ b/pkgs/development/python-modules/asyncinotify/default.nix
@@ -9,7 +9,7 @@
 
 buildPythonPackage rec {
   pname = "asyncinotify";
-  version = "4.0.9";
+  version = "4.1.0";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
@@ -18,7 +18,7 @@ buildPythonPackage rec {
     owner = "absperf";
     repo = "asyncinotify";
     rev = "refs/tags/v${version}";
-    hash = "sha256-Pmv1BXmKUNjFE5h99GR0GmjYKYmTi8ECKAUCKwIAMzc=";
+    hash = "sha256-SzsPYVA5fBXVcv7vE3FB4jFkIRr6NBlTeHrPxf5d8Ks=";
   };
 
   build-system = [ flit-core ];

From 1c2b86c22e1604aeab082969ecaed7456c9eca30 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 16:44:24 +0000
Subject: [PATCH 065/107] python312Packages.bloodyad: 2.0.6 -> 2.0.7

---
 pkgs/development/python-modules/bloodyad/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/bloodyad/default.nix b/pkgs/development/python-modules/bloodyad/default.nix
index 394589c86f42..6e986b20840f 100644
--- a/pkgs/development/python-modules/bloodyad/default.nix
+++ b/pkgs/development/python-modules/bloodyad/default.nix
@@ -17,7 +17,7 @@
 
 buildPythonPackage rec {
   pname = "bloodyad";
-  version = "2.0.6";
+  version = "2.0.7";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -26,7 +26,7 @@ buildPythonPackage rec {
     owner = "CravateRouge";
     repo = "bloodyAD";
     rev = "refs/tags/v${version}";
-    hash = "sha256-o035D6GYG1Uf59tFAAMsMF9kiY3yE15EDOCkg4V4tr4=";
+    hash = "sha256-FfEOpu23dSanWQLw1c5TbYiD2oNT0voqJV0QvW2wksQ=";
   };
 
   build-system = [ hatchling ];

From d6b5ca51d17400f767000f66f0a1880ddcb3ed0d Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 17:26:58 +0000
Subject: [PATCH 066/107] python312Packages.iminuit: 2.29.1 -> 2.30.0

---
 pkgs/development/python-modules/iminuit/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/iminuit/default.nix b/pkgs/development/python-modules/iminuit/default.nix
index 477e6f06a124..17fa94212c77 100644
--- a/pkgs/development/python-modules/iminuit/default.nix
+++ b/pkgs/development/python-modules/iminuit/default.nix
@@ -21,14 +21,14 @@
 
 buildPythonPackage rec {
   pname = "iminuit";
-  version = "2.29.1";
+  version = "2.30.0";
   format = "pyproject";
 
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-R00Q6y+SS5Mg9vcJPkwUnQo4wSTQQZwSoHo+ypQt4CU=";
+    hash = "sha256-jeC4K7azOBFls46VdhoCcBiaAIPNuS4VTfFlfsZRmkA=";
   };
 
   nativeBuildInputs = [

From 52208da9abe9feebb53a0d0d7a95c5f3ada956a2 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 17:39:49 +0000
Subject: [PATCH 067/107] raspberrypifw: 1.20240902 -> 1.20240924

---
 pkgs/os-specific/linux/firmware/raspberrypi/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/os-specific/linux/firmware/raspberrypi/default.nix b/pkgs/os-specific/linux/firmware/raspberrypi/default.nix
index 5dede06d9269..4a64c2afb160 100644
--- a/pkgs/os-specific/linux/firmware/raspberrypi/default.nix
+++ b/pkgs/os-specific/linux/firmware/raspberrypi/default.nix
@@ -3,13 +3,13 @@
 stdenvNoCC.mkDerivation rec {
   # NOTE: this should be updated with linux_rpi
   pname = "raspberrypi-firmware";
-  version = "1.20240902";
+  version = "1.20240924";
 
   src = fetchFromGitHub {
     owner = "raspberrypi";
     repo = "firmware";
     rev = version;
-    hash = "sha256-DN+NlesZ8YfuVwLKQSHckvpNZxqsbKRflOcS3ShO3Ss=";
+    hash = "sha256-r6kte+rZQliLEQMNMT1ZqbvE0oCWjkCYk8NfVHl5lQY=";
   };
 
   installPhase = ''

From 347eeaa07b623623000e9d9b0e0500bce6369ff4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Th=C3=A9o=20Bori?= <theo1.bori@epitech.eu>
Date: Sun, 22 Sep 2024 22:56:02 +0200
Subject: [PATCH 068/107] python3Packages.salib: init at 1.5.1

---
 .../python-modules/salib/default.nix          | 64 +++++++++++++++++++
 pkgs/top-level/python-packages.nix            |  2 +
 2 files changed, 66 insertions(+)
 create mode 100644 pkgs/development/python-modules/salib/default.nix

diff --git a/pkgs/development/python-modules/salib/default.nix b/pkgs/development/python-modules/salib/default.nix
new file mode 100644
index 000000000000..9b1f1ccd799b
--- /dev/null
+++ b/pkgs/development/python-modules/salib/default.nix
@@ -0,0 +1,64 @@
+{
+  lib,
+  fetchPypi,
+  buildPythonPackage,
+  hatchling,
+  hatch-vcs,
+  numpy,
+  scipy,
+  matplotlib,
+  pandas,
+  multiprocess,
+  pathos,
+}:
+let
+  finalAttrs = {
+    pname = "salib";
+    version = "1.5.1";
+    pyproject = true;
+
+    src = fetchPypi {
+      inherit (finalAttrs) pname version;
+      hash = "sha256-5KnDGbjdAplajcmD9XxFLLflttvUPnt4VskMtqMyu18=";
+    };
+
+    build-system = [
+      hatchling
+      hatch-vcs
+    ];
+
+    dependencies = [
+      numpy
+      scipy
+      matplotlib
+      pandas
+      multiprocess
+    ];
+
+    optional-dependencies = {
+      distributed = [ pathos ];
+    };
+
+    # There are no tests in the pypi package
+    doCheck = false;
+
+    pythonImportsCheck = [
+      "SALib"
+      "SALib.analyze"
+      "SALib.plotting"
+      "SALib.sample"
+      "SALib.test_functions"
+      "SALib.util"
+    ];
+
+    meta = {
+      changelog = "https://github.com/SALib/SALib/releases";
+      description = "Python implementations of commonly used sensitivity analysis methods, useful in systems modeling to calculate the effects of model inputs or exogenous factors on outputs of interest";
+      homepage = "https://github.com/SALib/SALib";
+      license = lib.licenses.mit;
+      maintainers = with lib.maintainers; [ theobori ];
+      mainProgram = "salib";
+    };
+  };
+in
+buildPythonPackage finalAttrs
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index a9231aecd6e8..265fe56c03aa 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -13861,6 +13861,8 @@ self: super: with self; {
 
   sagemaker = callPackage ../development/python-modules/sagemaker { };
 
+  salib = callPackage ../development/python-modules/salib { };
+
   salmon-mail = callPackage ../development/python-modules/salmon-mail { };
 
   sane = callPackage ../development/python-modules/sane {

From 857db009bc4a0c13e0ece3ff8d515926f42b0e3f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Th=C3=A9o=20Bori?= <theo1.bori@epitech.eu>
Date: Mon, 23 Sep 2024 20:37:01 +0200
Subject: [PATCH 069/107] python3Packages.loompy: init at 3.0.7

---
 .../python-modules/loompy/default.nix         | 56 +++++++++++++++++++
 pkgs/top-level/python-packages.nix            |  2 +
 2 files changed, 58 insertions(+)
 create mode 100644 pkgs/development/python-modules/loompy/default.nix

diff --git a/pkgs/development/python-modules/loompy/default.nix b/pkgs/development/python-modules/loompy/default.nix
new file mode 100644
index 000000000000..1240a01be03a
--- /dev/null
+++ b/pkgs/development/python-modules/loompy/default.nix
@@ -0,0 +1,56 @@
+{
+  lib,
+  fetchPypi,
+  buildPythonPackage,
+  h5py,
+  numpy,
+  scipy,
+  numba,
+  click,
+  numpy-groupies,
+  setuptools,
+  pytestCheckHook,
+}:
+let
+  finalAttrs = {
+    pname = "loompy";
+    version = "3.0.7";
+    pyproject = true;
+
+    src = fetchPypi {
+      inherit (finalAttrs) pname version;
+      hash = "sha256-tc33tUc0xr7ToYHRGUevcK8sbg3K3AL9Docd8jL6qPQ=";
+    };
+
+    build-system = [ setuptools ];
+
+    dependencies = [
+      h5py
+      numpy
+      scipy
+      numba
+      click
+      numpy-groupies
+    ];
+
+    nativeCheckInputs = [ pytestCheckHook ];
+
+    # Deprecated numpy attributes access
+    disabledTests = [
+      "test_scan_with_default_ordering"
+      "test_get"
+    ];
+
+    pythonImportsCheck = [ "loompy" ];
+
+    meta = {
+      changelog = "https://github.com/linnarsson-lab/loompy/releases";
+      description = "Python implementation of the Loom file format";
+      homepage = "https://github.com/linnarsson-lab/loompy";
+      license = lib.licenses.bsd2;
+      maintainers = with lib.maintainers; [ theobori ];
+      mainProgram = "loompy";
+    };
+  };
+in
+buildPythonPackage finalAttrs
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 091be094c5b2..6829c74770f3 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7407,6 +7407,8 @@ self: super: with self; {
 
   lomond = callPackage ../development/python-modules/lomond { };
 
+  loompy = callPackage ../development/python-modules/loompy { };
+
   loopy = callPackage ../development/python-modules/loopy { };
 
   looseversion = callPackage ../development/python-modules/looseversion { };

From a33a7c7e860a04ccf3fa2d4076d273df1d89111d Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 17:57:52 +0000
Subject: [PATCH 070/107] python312Packages.msgraph-core: 1.1.3 -> 1.1.4

---
 pkgs/development/python-modules/msgraph-core/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/msgraph-core/default.nix b/pkgs/development/python-modules/msgraph-core/default.nix
index 411b434bbac7..b7bddc916ab8 100644
--- a/pkgs/development/python-modules/msgraph-core/default.nix
+++ b/pkgs/development/python-modules/msgraph-core/default.nix
@@ -17,7 +17,7 @@
 
 buildPythonPackage rec {
   pname = "msgraph-core";
-  version = "1.1.3";
+  version = "1.1.4";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -26,7 +26,7 @@ buildPythonPackage rec {
     owner = "microsoftgraph";
     repo = "msgraph-sdk-python-core";
     rev = "refs/tags/v${version}";
-    hash = "sha256-n0mAMuTRNEN+bCOvKoDFwL7nlv2mboO65nn6fDCITk4=";
+    hash = "sha256-r8awjj4yo8BXQ0vZiJW+ky1sTvC04FzcViJY725/P6k=";
   };
 
   build-system = [ setuptools ];

From e2757d6722631b5b7b698b66e33f703150932244 Mon Sep 17 00:00:00 2001
From: Malo Bourgon <mbourgon@gmail.com>
Date: Tue, 24 Sep 2024 12:01:41 -0700
Subject: [PATCH 071/107] python312Packages.guidance: disable flaky test

---
 pkgs/development/python-modules/guidance/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/python-modules/guidance/default.nix b/pkgs/development/python-modules/guidance/default.nix
index f930e4ddd4e7..754d7109c692 100644
--- a/pkgs/development/python-modules/guidance/default.nix
+++ b/pkgs/development/python-modules/guidance/default.nix
@@ -79,6 +79,9 @@ buildPythonPackage rec {
     "test_recursion_error"
     "test_openai_class_detection"
     "test_openai_chat_without_roles"
+
+    # flaky tests
+    "test_remote_mock_gen" # frequently fails when building packages in parallel
   ];
 
   disabledTestPaths = [

From ac35e3b0e0d81c433012534bc213d4cf44da4fd7 Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Sat, 7 Sep 2024 14:01:03 +0200
Subject: [PATCH 072/107] forecast: init at 0-unstable-2024-09-23

---
 pkgs/by-name/fo/forecast/Cargo.lock  | 7017 ++++++++++++++++++++++++++
 pkgs/by-name/fo/forecast/package.nix |  105 +
 2 files changed, 7122 insertions(+)
 create mode 100644 pkgs/by-name/fo/forecast/Cargo.lock
 create mode 100644 pkgs/by-name/fo/forecast/package.nix

diff --git a/pkgs/by-name/fo/forecast/Cargo.lock b/pkgs/by-name/fo/forecast/Cargo.lock
new file mode 100644
index 000000000000..49a40caae702
--- /dev/null
+++ b/pkgs/by-name/fo/forecast/Cargo.lock
@@ -0,0 +1,7017 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "ab_glyph"
+version = "0.2.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e08104bebc65a46f8bc7aa733d39ea6874bfa7156f41a46b805785e3af1587d"
+dependencies = [
+ "ab_glyph_rasterizer",
+ "owned_ttf_parser",
+]
+
+[[package]]
+name = "ab_glyph_rasterizer"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c71b1793ee61086797f5c80b6efa2b8ffa6d5dd703f118545808a7f2e27f7046"
+
+[[package]]
+name = "accesskit"
+version = "0.12.2"
+source = "git+https://github.com/wash2/accesskit.git?branch=winit-0.29#26f729169cd849970af02be62289606c63572d2d"
+
+[[package]]
+name = "accesskit_consumer"
+version = "0.17.0"
+source = "git+https://github.com/wash2/accesskit.git?branch=winit-0.29#26f729169cd849970af02be62289606c63572d2d"
+dependencies = [
+ "accesskit",
+]
+
+[[package]]
+name = "accesskit_macos"
+version = "0.11.0"
+source = "git+https://github.com/wash2/accesskit.git?branch=winit-0.29#26f729169cd849970af02be62289606c63572d2d"
+dependencies = [
+ "accesskit",
+ "accesskit_consumer",
+ "icrate 0.1.2",
+ "objc2 0.5.0",
+ "once_cell",
+]
+
+[[package]]
+name = "accesskit_unix"
+version = "0.7.1"
+source = "git+https://github.com/wash2/accesskit.git?branch=winit-0.29#26f729169cd849970af02be62289606c63572d2d"
+dependencies = [
+ "accesskit",
+ "accesskit_consumer",
+ "async-channel",
+ "async-executor",
+ "async-task",
+ "atspi",
+ "futures-lite 1.13.0",
+ "futures-util",
+ "once_cell",
+ "serde",
+ "tokio",
+ "tokio-stream",
+ "zbus 3.15.2",
+]
+
+[[package]]
+name = "accesskit_windows"
+version = "0.16.0"
+source = "git+https://github.com/wash2/accesskit.git?branch=winit-0.29#26f729169cd849970af02be62289606c63572d2d"
+dependencies = [
+ "accesskit",
+ "accesskit_consumer",
+ "once_cell",
+ "paste",
+ "static_assertions",
+ "windows 0.48.0",
+]
+
+[[package]]
+name = "accesskit_winit"
+version = "0.18.1"
+source = "git+https://github.com/wash2/accesskit.git?branch=winit-0.29#26f729169cd849970af02be62289606c63572d2d"
+dependencies = [
+ "accesskit",
+ "accesskit_macos",
+ "accesskit_unix",
+ "accesskit_windows",
+ "raw-window-handle",
+ "winit",
+]
+
+[[package]]
+name = "addr2line"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a30b2e23b9e17a9f90641c7ab1549cd9b44f296d3ccbf309d2863cfe398a0cb"
+dependencies = [
+ "gimli",
+]
+
+[[package]]
+name = "adler"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
+
+[[package]]
+name = "ahash"
+version = "0.8.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e89da841a80418a9b391ebaea17f5c112ffaaa96f621d2c285b5174da76b9011"
+dependencies = [
+ "cfg-if",
+ "getrandom",
+ "once_cell",
+ "version_check",
+ "zerocopy",
+]
+
+[[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "aliasable"
+version = "0.1.3"
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+checksum = "250f629c0161ad8107cf89319e990051fae62832fd343083bea452d93e2205fd"
+
+[[package]]
+name = "aligned-vec"
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+
+[[package]]
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+checksum = "0942ffc6dcaadf03badf6e6a2d0228460359d5e34b57ccdc720b7382dfbd5ec5"
+
+[[package]]
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+
+[[package]]
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+checksum = "ee91c0c2905bae44f84bfa4e044536541df26b7703fd0888deeb9060fcc44289"
+dependencies = [
+ "android-properties",
+ "bitflags 2.5.0",
+ "cc",
+ "cesu8",
+ "jni",
+ "jni-sys",
+ "libc",
+ "log",
+ "ndk",
+ "ndk-context",
+ "ndk-sys",
+ "num_enum",
+ "thiserror",
+]
+
+[[package]]
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+
+[[package]]
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+ "zbus 4.3.0",
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+
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+ "futures-core",
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+ "concurrent-queue",
+ "event-listener 5.3.0",
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+]
+
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+ "tokio",
+]
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+ "concurrent-queue",
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+ "log",
+ "parking",
+ "polling 2.8.0",
+ "rustix 0.37.27",
+ "slab",
+ "socket2 0.4.10",
+ "waker-fn",
+]
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+ "polling 3.6.0",
+ "rustix 0.38.32",
+ "slab",
+ "tracing",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
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+ "event-listener 2.5.3",
+]
+
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+dependencies = [
+ "event-listener 4.0.3",
+ "event-listener-strategy 0.4.0",
+ "pin-project-lite",
+]
+
+[[package]]
+name = "async-net"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b948000fad4873c1c9339d60f2623323a0cfd3816e5181033c6a5cb68b2accf7"
+dependencies = [
+ "async-io 2.3.2",
+ "blocking",
+ "futures-lite 2.3.0",
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+ "async-lock 2.8.0",
+ "async-signal",
+ "blocking",
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+ "as-raw-xcb-connection",
+ "gethostname",
+ "libc",
+ "libloading 0.8.3",
+ "once_cell",
+ "rustix 0.38.32",
+ "x11rb-protocol",
+]
+
+[[package]]
+name = "x11rb-protocol"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec107c4503ea0b4a98ef47356329af139c0a4f7750e621cf2973cd3385ebcb3d"
+
+[[package]]
+name = "xcursor"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a0ccd7b4a5345edfcd0c3535718a4e9ff7798ffc536bb5b5a0e26ff84732911"
+
+[[package]]
+name = "xdg"
+version = "2.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "213b7324336b53d2414b2db8537e56544d981803139155afa84f76eeebb7a546"
+
+[[package]]
+name = "xdg-home"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21e5a325c3cb8398ad6cf859c1135b25dd29e186679cf2da7581d9679f63b38e"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "xkbcommon"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13867d259930edc7091a6c41b4ce6eee464328c6ff9659b7e4c668ca20d4c91e"
+dependencies = [
+ "libc",
+ "memmap2 0.8.0",
+ "xkeysym",
+]
+
+[[package]]
+name = "xkbcommon-dl"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d039de8032a9a8856a6be89cea3e5d12fdd82306ab7c94d74e6deab2460651c5"
+dependencies = [
+ "bitflags 2.5.0",
+ "dlib",
+ "log",
+ "once_cell",
+ "xkeysym",
+]
+
+[[package]]
+name = "xkeysym"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "054a8e68b76250b253f671d1268cb7f1ae089ec35e195b2efb2a4e9a836d0621"
+dependencies = [
+ "bytemuck",
+]
+
+[[package]]
+name = "xml-rs"
+version = "0.8.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "791978798f0597cfc70478424c2b4fdc2b7a8024aaff78497ef00f24ef674193"
+
+[[package]]
+name = "xmlwriter"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec7a2a501ed189703dba8b08142f057e887dfc4b2cc4db2d343ac6376ba3e0b9"
+
+[[package]]
+name = "xxhash-rust"
+version = "0.8.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "927da81e25be1e1a2901d59b81b37dd2efd1fc9c9345a55007f09bf5a2d3ee03"
+
+[[package]]
+name = "yazi"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c94451ac9513335b5e23d7a8a2b61a7102398b8cca5160829d313e84c9d98be1"
+
+[[package]]
+name = "zbus"
+version = "3.15.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "675d170b632a6ad49804c8cf2105d7c31eddd3312555cffd4b740e08e97c25e6"
+dependencies = [
+ "async-broadcast 0.5.1",
+ "async-executor",
+ "async-fs 1.6.0",
+ "async-io 1.13.0",
+ "async-lock 2.8.0",
+ "async-process 1.8.1",
+ "async-recursion",
+ "async-task",
+ "async-trait",
+ "blocking",
+ "byteorder",
+ "derivative",
+ "enumflags2",
+ "event-listener 2.5.3",
+ "futures-core",
+ "futures-sink",
+ "futures-util",
+ "hex",
+ "nix 0.26.4",
+ "once_cell",
+ "ordered-stream",
+ "rand",
+ "serde",
+ "serde_repr",
+ "sha1",
+ "static_assertions",
+ "tokio",
+ "tracing",
+ "uds_windows",
+ "winapi",
+ "xdg-home",
+ "zbus_macros 3.15.2",
+ "zbus_names 2.6.1",
+ "zvariant 3.15.2",
+]
+
+[[package]]
+name = "zbus"
+version = "4.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23915fcb26e7a9a9dc05fd93a9870d336d6d032cd7e8cebf1c5c37666489fdd5"
+dependencies = [
+ "async-broadcast 0.7.1",
+ "async-executor",
+ "async-fs 2.1.2",
+ "async-io 2.3.2",
+ "async-lock 3.3.0",
+ "async-process 2.2.3",
+ "async-recursion",
+ "async-task",
+ "async-trait",
+ "blocking",
+ "enumflags2",
+ "event-listener 5.3.0",
+ "futures-core",
+ "futures-sink",
+ "futures-util",
+ "hex",
+ "nix 0.28.0",
+ "ordered-stream",
+ "rand",
+ "serde",
+ "serde_repr",
+ "sha1",
+ "static_assertions",
+ "tokio",
+ "tracing",
+ "uds_windows",
+ "windows-sys 0.52.0",
+ "xdg-home",
+ "zbus_macros 4.3.0",
+ "zbus_names 3.0.0",
+ "zvariant 4.1.2",
+]
+
+[[package]]
+name = "zbus_macros"
+version = "3.15.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7131497b0f887e8061b430c530240063d33bf9455fa34438f388a245da69e0a5"
+dependencies = [
+ "proc-macro-crate 1.3.1",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "syn 1.0.109",
+ "zvariant_utils 1.0.1",
+]
+
+[[package]]
+name = "zbus_macros"
+version = "4.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02bcca0b586d2f8589da32347b4784ba424c4891ed86aa5b50d5e88f6b2c4f5d"
+dependencies = [
+ "proc-macro-crate 3.1.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.71",
+ "zvariant_utils 2.0.0",
+]
+
+[[package]]
+name = "zbus_names"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "437d738d3750bed6ca9b8d423ccc7a8eb284f6b1d6d4e225a0e4e6258d864c8d"
+dependencies = [
+ "serde",
+ "static_assertions",
+ "zvariant 3.15.2",
+]
+
+[[package]]
+name = "zbus_names"
+version = "3.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4b9b1fef7d021261cc16cba64c351d291b715febe0fa10dc3a443ac5a5022e6c"
+dependencies = [
+ "serde",
+ "static_assertions",
+ "zvariant 4.1.2",
+]
+
+[[package]]
+name = "zeno"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd15f8e0dbb966fd9245e7498c7e9e5055d9e5c8b676b95bd67091cd11a1e697"
+
+[[package]]
+name = "zerocopy"
+version = "0.7.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74d4d3961e53fa4c9a25a8637fc2bfaf2595b3d3ae34875568a5cf64787716be"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.7.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ce1b18ccd8e73a9321186f97e46f9f04b778851177567b1975109d26a08d2a6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.71",
+]
+
+[[package]]
+name = "zune-core"
+version = "0.4.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f423a2c17029964870cfaabb1f13dfab7d092a62a29a89264f4d36990ca414a"
+
+[[package]]
+name = "zune-inflate"
+version = "0.2.54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73ab332fe2f6680068f3582b16a24f90ad7096d5d39b974d1c0aff0125116f02"
+dependencies = [
+ "simd-adler32",
+]
+
+[[package]]
+name = "zune-jpeg"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16099418600b4d8f028622f73ff6e3deaabdff330fb9a2a131dea781ee8b0768"
+dependencies = [
+ "zune-core",
+]
+
+[[package]]
+name = "zvariant"
+version = "3.15.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4eef2be88ba09b358d3b58aca6e41cd853631d44787f319a1383ca83424fb2db"
+dependencies = [
+ "byteorder",
+ "enumflags2",
+ "libc",
+ "serde",
+ "static_assertions",
+ "zvariant_derive 3.15.2",
+]
+
+[[package]]
+name = "zvariant"
+version = "4.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1724a2b330760dc7d2a8402d841119dc869ef120b139d29862d6980e9c75bfc9"
+dependencies = [
+ "endi",
+ "enumflags2",
+ "serde",
+ "static_assertions",
+ "url",
+ "zvariant_derive 4.1.2",
+]
+
+[[package]]
+name = "zvariant_derive"
+version = "3.15.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37c24dc0bed72f5f90d1f8bb5b07228cbf63b3c6e9f82d82559d4bae666e7ed9"
+dependencies = [
+ "proc-macro-crate 1.3.1",
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+ "zvariant_utils 1.0.1",
+]
+
+[[package]]
+name = "zvariant_derive"
+version = "4.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55025a7a518ad14518fb243559c058a2e5b848b015e31f1d90414f36e3317859"
+dependencies = [
+ "proc-macro-crate 3.1.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.71",
+ "zvariant_utils 2.0.0",
+]
+
+[[package]]
+name = "zvariant_utils"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7234f0d811589db492d16893e3f21e8e2fd282e6d01b0cddee310322062cc200"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
+[[package]]
+name = "zvariant_utils"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc242db087efc22bd9ade7aa7809e4ba828132edc312871584a6b4391bdf8786"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.71",
+]
diff --git a/pkgs/by-name/fo/forecast/package.nix b/pkgs/by-name/fo/forecast/package.nix
new file mode 100644
index 000000000000..9caca19cafdb
--- /dev/null
+++ b/pkgs/by-name/fo/forecast/package.nix
@@ -0,0 +1,105 @@
+{
+  lib,
+  stdenv,
+  rustPlatform,
+  fetchFromGitHub,
+
+  # nativeBuildInputs
+  autoPatchelfHook,
+  just,
+  pkg-config,
+  wrapGAppsHook3,
+
+  # buildInputs
+  libxkbcommon,
+  openssl,
+  vulkan-loader,
+  wayland,
+  nix-update-script,
+
+  cosmic-icons,
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "forecast";
+  version = "0-unstable-2024-09-23";
+
+  src = fetchFromGitHub {
+    owner = "cosmic-utils";
+    repo = "forecast";
+    rev = "d3c274932847aa101fb7aacf1d01ded265b6fad4";
+    hash = "sha256-6hlh9T0h1Yi8io2sMU/r8uMtP6isH6JJxE5LvZrj9Cs=";
+  };
+
+  cargoLock = {
+    lockFile = ./Cargo.lock;
+    outputHashes = {
+      "accesskit-0.12.2" = "sha256-1UwgRyUe0PQrZrpS7574oNLi13fg5HpgILtZGW6JNtQ=";
+      "atomicwrites-0.4.2" = "sha256-QZSuGPrJXh+svMeFWqAXoqZQxLq/WfIiamqvjJNVhxA=";
+      "clipboard_macos-0.1.0" = "sha256-cG5vnkiyDlQnbEfV2sPbmBYKv1hd3pjJrymfZb8ziKk=";
+      "cosmic-config-0.1.0" = "sha256-zamYPvxmIqh4IT4G+aqceP1mXNNBA1TAcJwAtjlbYAU=";
+      "cosmic-text-0.12.1" = "sha256-5Gk220HTiHuxDvyqwz1Dwr+BaLvH/6X7M14IirQzcsE=";
+      "d3d12-0.19.0" = "sha256-usrxQXWLGJDjmIdw1LBXtBvX+CchZDvE8fHC0LjvhD4=";
+      "glyphon-0.5.0" = "sha256-j1HrbEpUBqazWqNfJhpyjWuxYAxkvbXzRKeSouUoPWg=";
+      "smithay-clipboard-0.8.0" = "sha256-4InFXm0ahrqFrtNLeqIuE3yeOpxKZJZx+Bc0yQDtv34=";
+      "softbuffer-0.4.1" = "sha256-a0bUFz6O8CWRweNt/OxTvflnPYwO5nm6vsyc/WcXyNg=";
+      "taffy-0.3.11" = "sha256-SCx9GEIJjWdoNVyq+RZAGn0N71qraKZxf9ZWhvyzLaI=";
+      "winit-0.29.10" = "sha256-ScTII2AzK3SC8MVeASZ9jhVWsEaGrSQ2BnApTxgfxK4=";
+    };
+  };
+
+  nativeBuildInputs = [
+    autoPatchelfHook
+    just
+    pkg-config
+    wrapGAppsHook3
+  ];
+
+  dontUseJustBuild = true;
+  dontUseJustCheck = true;
+
+  buildInputs = [
+    libxkbcommon
+    openssl
+    vulkan-loader
+    wayland
+  ];
+
+  env = {
+    # COSMIC applications now uses vergen for the About page
+    VERGEN_GIT_COMMIT_DATE = "1970-01-01";
+    VERGEN_GIT_SHA = src.rev;
+  };
+
+  runtimeDependencies = [
+    libxkbcommon
+    wayland
+  ];
+
+  postFixup = ''
+    wrapProgram $out/bin/cosmic-ext-forecast \
+      --suffix XDG_DATA_DIRS : "${cosmic-icons}/share"
+  '';
+
+  justFlags = [
+    "--set"
+    "prefix"
+    (placeholder "out")
+    "--set"
+    "bin-src"
+    "target/${stdenv.hostPlatform.rust.cargoShortTarget}/release/cosmic-ext-forecast"
+  ];
+
+  passthru = {
+    updateScript = nix-update-script { };
+  };
+
+  meta = {
+    description = "Weather app written in rust and libcosmic";
+    homepage = "https://github.com/cosmic-utils/forecast";
+    license = lib.licenses.gpl3Only;
+    maintainers = with lib.maintainers; [ GaetanLepage ];
+    platforms = lib.platforms.linux;
+    mainProgram = "cosmic-ext-forecast";
+  };
+}

From fb52378cb1ab7983e8fac168452cbf73fbe88ba7 Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 19:54:35 +0000
Subject: [PATCH 073/107] syft: 1.12.2 -> 1.13.0

---
 pkgs/by-name/sy/syft/package.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/by-name/sy/syft/package.nix b/pkgs/by-name/sy/syft/package.nix
index cea6518823fb..d22a28341aa0 100644
--- a/pkgs/by-name/sy/syft/package.nix
+++ b/pkgs/by-name/sy/syft/package.nix
@@ -7,13 +7,13 @@
 
 buildGoModule rec {
   pname = "syft";
-  version = "1.12.2";
+  version = "1.13.0";
 
   src = fetchFromGitHub {
     owner = "anchore";
     repo = "syft";
     rev = "refs/tags/v${version}";
-    hash = "sha256-SLNNaEF4Ep9fxYAsO+Qu+yKm+3CHs5kD//mgD8P4FxQ=";
+    hash = "sha256-4uANrPYqzyiPoqhTvrpbi0plkbJ3b8HzyYaBmj/hi58=";
     # populate values that require us to use git. By doing this in postFetch we
     # can delete .git afterwards and maintain better reproducibility of the src.
     leaveDotGit = true;
@@ -28,7 +28,7 @@ buildGoModule rec {
   # hash mismatch with darwin
   proxyVendor = true;
 
-  vendorHash = "sha256-RVU6vr9ri+lx+PvFve/86cuQCnPnxA+z/lo2Hj4jnbg=";
+  vendorHash = "sha256-YM3DgkdappyEg3suV39gbikm/XJ7JqvEYbTF8+no7Qo=";
 
   nativeBuildInputs = [ installShellFiles ];
 

From 48a314372cd075f0b7c337c846be7c6bdc4f39cf Mon Sep 17 00:00:00 2001
From: "R. Ryantm" <ryantm-bot@ryantm.com>
Date: Tue, 24 Sep 2024 20:07:22 +0000
Subject: [PATCH 074/107] python312Packages.python-linkplay: 0.0.10 -> 0.0.11

---
 pkgs/development/python-modules/python-linkplay/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/python-linkplay/default.nix b/pkgs/development/python-modules/python-linkplay/default.nix
index 0b66eb44f892..cc7671ebc3f1 100644
--- a/pkgs/development/python-modules/python-linkplay/default.nix
+++ b/pkgs/development/python-modules/python-linkplay/default.nix
@@ -15,14 +15,14 @@
 
 buildPythonPackage rec {
   pname = "python-linkplay";
-  version = "0.0.10";
+  version = "0.0.11";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "Velleman";
     repo = "python-linkplay";
     rev = "refs/tags/v${version}";
-    hash = "sha256-uenFr86WXSFzo3PlDz/KyMgG06QDzm69z0TM59UP6pg=";
+    hash = "sha256-IFDVIUBB/8FZMn6CKmZBbOEB3ghzer7Fe6YLhwtjJSU=";
   };
 
   build-system = [ setuptools ];

From 2c6cd713f23d0f79142c0086bf0e284ffc0c1bac Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Wed, 4 Sep 2024 23:50:21 +0200
Subject: [PATCH 075/107] python312Packages.torch: 2.4.0 -> 2.4.1

Diff: https://github.com/pytorch/pytorch/compare/refs/tags/v2.4.0...v2.4.1

Changelog: https://github.com/pytorch/pytorch/releases/tag/v2.4.1
---
 pkgs/development/python-modules/torch/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/torch/default.nix b/pkgs/development/python-modules/torch/default.nix
index bd6b1b262837..32b4525b60e8 100644
--- a/pkgs/development/python-modules/torch/default.nix
+++ b/pkgs/development/python-modules/torch/default.nix
@@ -214,7 +214,7 @@ in
 buildPythonPackage rec {
   pname = "torch";
   # Don't forget to update torch-bin to the same version.
-  version = "2.4.0";
+  version = "2.4.1";
   pyproject = true;
 
   disabled = pythonOlder "3.8.0";
@@ -232,7 +232,7 @@ buildPythonPackage rec {
     repo = "pytorch";
     rev = "refs/tags/v${version}";
     fetchSubmodules = true;
-    hash = "sha256-s49rtarGNNFpnNG+kfJtZLE8ND53Ma201I0cOjeFSts=";
+    hash = "sha256-x/zM/57syr46CP1TfGaefSjzvNm4jJbWFZGVGyzPMg8=";
   };
 
   patches =

From 252b4e6e86792a26e01209128fc4ba21fe40f928 Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Wed, 4 Sep 2024 23:59:35 +0200
Subject: [PATCH 076/107] python312Packages.torch-bin: sort inputs correctly

---
 pkgs/development/python-modules/torch/bin.nix | 41 +++++++++++--------
 1 file changed, 24 insertions(+), 17 deletions(-)

diff --git a/pkgs/development/python-modules/torch/bin.nix b/pkgs/development/python-modules/torch/bin.nix
index 4ecaac16be18..216bde861e76 100644
--- a/pkgs/development/python-modules/torch/bin.nix
+++ b/pkgs/development/python-modules/torch/bin.nix
@@ -1,27 +1,34 @@
 {
   lib,
   stdenv,
-  buildPythonPackage,
-  autoAddDriverRunpath,
-  fetchurl,
   python,
-  pythonAtLeast,
+  buildPythonPackage,
   pythonOlder,
+  pythonAtLeast,
+  fetchurl,
+
+  # nativeBuildInputs
   addDriverRunpath,
-  callPackage,
-  cudaPackages,
-  future,
-  numpy,
+  autoAddDriverRunpath,
   autoPatchelfHook,
+
+  # buildInputs
+  cudaPackages,
+
+  # dependencies
+  filelock,
+  future,
+  jinja2,
+  networkx,
+  numpy,
   pyyaml,
   requests,
   setuptools,
-  typing-extensions,
   sympy,
-  jinja2,
-  networkx,
-  filelock,
+  typing-extensions,
   triton,
+
+  callPackage,
 }:
 
 let
@@ -44,8 +51,8 @@ buildPythonPackage {
 
   nativeBuildInputs = lib.optionals stdenv.isLinux [
     addDriverRunpath
-    autoPatchelfHook
     autoAddDriverRunpath
+    autoPatchelfHook
   ];
 
   buildInputs = lib.optionals stdenv.isLinux (
@@ -77,16 +84,16 @@ buildPythonPackage {
   ];
 
   dependencies = [
+    filelock
     future
+    jinja2
+    networkx
     numpy
     pyyaml
     requests
     setuptools
-    typing-extensions
     sympy
-    jinja2
-    networkx
-    filelock
+    typing-extensions
   ] ++ lib.optionals (stdenv.isLinux && stdenv.isx86_64) [ triton ];
 
   postInstall = ''

From 9964965a4363e64cca02f64db17657f99061663e Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Thu, 5 Sep 2024 00:02:15 +0200
Subject: [PATCH 077/107] python312Packages.torch-bin: 2.4.0 -> 2.4.1

Diff:
https://github.com/pytorch/pytorch/compare/refs/tags/v2.4.0...v2.4.1

Changelog: https://github.com/pytorch/pytorch/releases/tag/v2.4.1
---
 pkgs/development/python-modules/torch/bin.nix |  2 +-
 .../python-modules/torch/binary-hashes.nix    | 92 +++++++++----------
 2 files changed, 47 insertions(+), 47 deletions(-)

diff --git a/pkgs/development/python-modules/torch/bin.nix b/pkgs/development/python-modules/torch/bin.nix
index 216bde861e76..a31fb394cfdf 100644
--- a/pkgs/development/python-modules/torch/bin.nix
+++ b/pkgs/development/python-modules/torch/bin.nix
@@ -35,7 +35,7 @@ let
   pyVerNoDot = builtins.replaceStrings [ "." ] [ "" ] python.pythonVersion;
   srcs = import ./binary-hashes.nix version;
   unsupported = throw "Unsupported system";
-  version = "2.4.0";
+  version = "2.4.1";
 in
 buildPythonPackage {
   inherit version;
diff --git a/pkgs/development/python-modules/torch/binary-hashes.nix b/pkgs/development/python-modules/torch/binary-hashes.nix
index 8a2cbc2ffa9c..1db23d136ba4 100644
--- a/pkgs/development/python-modules/torch/binary-hashes.nix
+++ b/pkgs/development/python-modules/torch/binary-hashes.nix
@@ -7,81 +7,81 @@
 
 version:
 builtins.getAttr version {
-  "2.4.0" = {
+  "2.4.1" = {
     x86_64-linux-38 = {
-      name = "torch-2.4.0-cp38-cp38-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torch-2.4.0%2Bcu121-cp38-cp38-linux_x86_64.whl";
-      hash = "sha256-ikebcXQK+SpOG5kEW+qDHz2nMYfIw+PSErHm/jkxWyE=";
+      name = "torch-2.4.1-cp38-cp38-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torch-2.4.1%2Bcu121-cp38-cp38-linux_x86_64.whl";
+      hash = "sha256-y09QL5ELR+HjZsz3sjHawpZ9LvtH1LjLM/xjtLxe7tg=";
     };
     x86_64-linux-39 = {
-      name = "torch-2.4.0-cp39-cp39-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torch-2.4.0%2Bcu121-cp39-cp39-linux_x86_64.whl";
-      hash = "sha256-iIObriuWfdOFeaqwu6lRDpKxHau8Th3V5jDF/WVfXac=";
+      name = "torch-2.4.1-cp39-cp39-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torch-2.4.1%2Bcu121-cp39-cp39-linux_x86_64.whl";
+      hash = "sha256-mYatNVXd//Vekl2CmPiytJEGp9xg+BGiB2pEX+RFjis=";
     };
     x86_64-linux-310 = {
-      name = "torch-2.4.0-cp310-cp310-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torch-2.4.0%2Bcu121-cp310-cp310-linux_x86_64.whl";
-      hash = "sha256-KL+6CE3KUqBsRl160PPMNyw1/FA/PquIHMF6X9gpFOc=";
+      name = "torch-2.4.1-cp310-cp310-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torch-2.4.1%2Bcu121-cp310-cp310-linux_x86_64.whl";
+      hash = "sha256-ml8LEDz+hAs1aEFqpQZ/bnuf7GfZxWWf1DsSB0UP6XU=";
     };
     x86_64-linux-311 = {
-      name = "torch-2.4.0-cp311-cp311-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torch-2.4.0%2Bcu121-cp311-cp311-linux_x86_64.whl";
-      hash = "sha256-qf/zLTZeDHS2kJSAVIsuKRMUogStsptrtvLG0z+L4mw=";
+      name = "torch-2.4.1-cp311-cp311-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torch-2.4.1%2Bcu121-cp311-cp311-linux_x86_64.whl";
+      hash = "sha256-kU0Sjlq8u+ecobnrUxGxhURPGy1xF99VX+QYSH7PuJQ=";
     };
     x86_64-linux-312 = {
-      name = "torch-2.4.0-cp312-cp312-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torch-2.4.0%2Bcu121-cp312-cp312-linux_x86_64.whl";
-      hash = "sha256-SaxVpkl93W0M3VG16ifY6+IMknMHeFXpyW6w3CifB8M=";
+      name = "torch-2.4.1-cp312-cp312-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torch-2.4.1%2Bcu121-cp312-cp312-linux_x86_64.whl";
+      hash = "sha256-q0kWELFVUeCNp0urKdCTPmvxC6tE+31LEyjx6EXAWlM=";
     };
     aarch64-darwin-38 = {
-      name = "torch-2.4.0-cp38-none-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torch-2.4.0-cp38-none-macosx_11_0_arm64.whl";
-      hash = "sha256-OvTeKmGPsGXnhATEuieoGKe3lX6u/yjGxmzn+1BLaLg=";
+      name = "torch-2.4.1-cp38-none-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torch-2.4.1-cp38-none-macosx_11_0_arm64.whl";
+      hash = "sha256-X8HU1+0mXvhTV5yvJyaG0e2Hzr3NBPKkmPgA/8U9q3E=";
     };
     aarch64-darwin-39 = {
-      name = "torch-2.4.0-cp39-none-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torch-2.4.0-cp39-none-macosx_11_0_arm64.whl";
-      hash = "sha256-iUD8i5ekxh/bXUajaPIfSjpWKheHnpMutRpexiMQyzE=";
+      name = "torch-2.4.1-cp39-none-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torch-2.4.1-cp39-none-macosx_11_0_arm64.whl";
+      hash = "sha256-o43igD7mBQMJqsAyZ2U2w9O2qYBCSFN+OOCY0OFIF+w=";
     };
     aarch64-darwin-310 = {
-      name = "torch-2.4.0-cp310-none-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torch-2.4.0-cp310-none-macosx_11_0_arm64.whl";
-      hash = "sha256-aFQYq5NzDvvucVKIIf9UAFWWlw3Ul78DyJIE+34/cd4=";
+      name = "torch-2.4.1-cp310-none-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torch-2.4.1-cp310-none-macosx_11_0_arm64.whl";
+      hash = "sha256-02qO8QD1v/Ppw86pNLng1+onfLghDHFS00qabFgw6t0=";
     };
     aarch64-darwin-311 = {
-      name = "torch-2.4.0-cp311-none-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torch-2.4.0-cp311-none-macosx_11_0_arm64.whl";
-      hash = "sha256-8Wm06m3JOzozMZYR/MR9wUBuTdU5hE3L0t7EwbluFm0=";
+      name = "torch-2.4.1-cp311-none-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torch-2.4.1-cp311-none-macosx_11_0_arm64.whl";
+      hash = "sha256-3d29iwZudDk0pCALPVQmekbbAhBodtIc8x99p6lvmOo=";
     };
     aarch64-darwin-312 = {
-      name = "torch-2.4.0-cp312-none-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torch-2.4.0-cp312-none-macosx_11_0_arm64.whl";
-      hash = "sha256-karwC/4f+kTcW1KAnZqVEp/KECEuyjrCZCDrEXJ8Yog=";
+      name = "torch-2.4.1-cp312-none-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torch-2.4.1-cp312-none-macosx_11_0_arm64.whl";
+      hash = "sha256-crSE1bbOwac1vz+locSIPQF0hpjF6c/b60/6t8eYfg0=";
     };
     aarch64-linux-38 = {
-      name = "torch-2.4.0-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torch-2.4.0-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
-      hash = "sha256-nrqD+Kj5hUL5F+OQAMkD8VRlWs9jdcBzz81DBqFU64A=";
+      name = "torch-2.4.1-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torch-2.4.1-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
+      hash = "sha256-Vq0qdgt6eIJyWh7r9WV6u7O1FE6ya8tHtSBZNXRjxUg=";
     };
     aarch64-linux-39 = {
-      name = "torch-2.4.0-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torch-2.4.0-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
-      hash = "sha256-J4akfI2N7BdvxnnSqrmm9UnCVFJRC0llCrE0E1JmujM=";
+      name = "torch-2.4.1-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torch-2.4.1-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
+      hash = "sha256-FJUTLzD3Iq8aCRlQCIuuo4P+OZA9sGsg5pNv2ZQCgD4=";
     };
     aarch64-linux-310 = {
-      name = "torch-2.4.0-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torch-2.4.0-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
-      hash = "sha256-fBWeidTs8IQD+dE3PVVEIiQLmxFGoKGRKQadw1enKys=";
+      name = "torch-2.4.1-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torch-2.4.1-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
+      hash = "sha256-+iewSNMhmM2m6c/wv3aOhoPZh0OQO35dKx9QmN7R00M=";
     };
     aarch64-linux-311 = {
-      name = "torch-2.4.0-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torch-2.4.0-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
-      hash = "sha256-OBacsPHmcnw9rI2si5pI0HKkn2Q7kIqZFV7x2Bthves=";
+      name = "torch-2.4.1-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torch-2.4.1-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
+      hash = "sha256-ML4oRNDJORYaEQc7+69kXxx8tD9i9GzG5N8cEZ+yp5g=";
     };
     aarch64-linux-312 = {
-      name = "torch-2.4.0-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torch-2.4.0-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
-      hash = "sha256-7IY1E1C716vqNDb6b0Iws7C793oibkS6RhhA4gT8zXE=";
+      name = "torch-2.4.1-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torch-2.4.1-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl";
+      hash = "sha256-NhCUMrEL1xY8mzDOiW88LMobhrl2X5VqFZTw/0MJHio=";
     };
   };
 }

From 21a547a1e885bb53b018c577f1b8430a1f7398f1 Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Thu, 5 Sep 2024 00:05:16 +0200
Subject: [PATCH 078/107] python312Packages.torchvision: 0.19.0 -> 0.19.1

Diff: https://github.com/pytorch/vision/compare/refs/tags/v0.19.0...v0.19.1

Changelog: https://github.com/pytorch/vision/releases/tag/v0.19.1
---
 .../python-modules/torchvision/default.nix    | 22 +++++++++++++------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/pkgs/development/python-modules/torchvision/default.nix b/pkgs/development/python-modules/torchvision/default.nix
index b25fdc2c4281..e00846c824a9 100644
--- a/pkgs/development/python-modules/torchvision/default.nix
+++ b/pkgs/development/python-modules/torchvision/default.nix
@@ -1,16 +1,24 @@
 {
+  lib,
+  torch,
   buildPythonPackage,
   fetchFromGitHub,
-  lib,
-  libjpeg_turbo,
+
+  # nativeBuildInputs
   libpng,
   ninja,
+  which,
+
+  # buildInputs
+  libjpeg_turbo,
+
+  # dependencies
   numpy,
   pillow,
-  pytest,
   scipy,
-  torch,
-  which,
+
+  # tests
+  pytest,
 }:
 
 let
@@ -18,7 +26,7 @@ let
   inherit (cudaPackages) backendStdenv;
 
   pname = "torchvision";
-  version = "0.19.0";
+  version = "0.19.1";
 in
 buildPythonPackage {
   inherit pname version;
@@ -27,7 +35,7 @@ buildPythonPackage {
     owner = "pytorch";
     repo = "vision";
     rev = "refs/tags/v${version}";
-    hash = "sha256-OVwdEqKEoZR1jtcg4ODyvIZvP9UQPodPv8qnTqbA/pc=";
+    hash = "sha256-UMBFR/Vw13A+bBfr0p3rRwpCRVMq+ihdlG3C/iuOC30=";
   };
 
   nativeBuildInputs = [

From 34b8dc4efb8e01a62c0770e33dda552fdfad2ebd Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Thu, 5 Sep 2024 00:15:13 +0200
Subject: [PATCH 079/107] python312Packages.torchvision-bin: 0.19.0 -> 0.19.1

Diff:
https://github.com/pytorch/vision/compare/refs/tags/v0.19.0...v0.19.1

Changelog: https://github.com/pytorch/vision/releases/tag/v0.19.1
---
 .../python-modules/torchvision/bin.nix        | 22 +++--
 .../torchvision/binary-hashes.nix             | 92 +++++++++----------
 2 files changed, 60 insertions(+), 54 deletions(-)

diff --git a/pkgs/development/python-modules/torchvision/bin.nix b/pkgs/development/python-modules/torchvision/bin.nix
index 27dd914d7700..69a573b777d1 100644
--- a/pkgs/development/python-modules/torchvision/bin.nix
+++ b/pkgs/development/python-modules/torchvision/bin.nix
@@ -1,15 +1,21 @@
 {
   lib,
   stdenv,
+  python,
+  buildPythonPackage,
+  fetchurl,
+  pythonOlder,
+  pythonAtLeast,
+
+  # buildInputs
+  cudaPackages,
+
+  # nativeBuildInputs
   addDriverRunpath,
   autoPatchelfHook,
-  buildPythonPackage,
-  cudaPackages,
-  fetchurl,
-  pythonAtLeast,
-  pythonOlder,
+
+  # dependencies
   pillow,
-  python,
   torch-bin,
 }:
 
@@ -17,7 +23,7 @@ let
   pyVerNoDot = builtins.replaceStrings [ "." ] [ "" ] python.pythonVersion;
   srcs = import ./binary-hashes.nix version;
   unsupported = throw "Unsupported system";
-  version = "0.19.0";
+  version = "0.19.1";
 in
 buildPythonPackage {
   inherit version;
@@ -40,8 +46,8 @@ buildPythonPackage {
     ];
 
   nativeBuildInputs = lib.optionals stdenv.isLinux [
-    autoPatchelfHook
     addDriverRunpath
+    autoPatchelfHook
   ];
 
   dependencies = [
diff --git a/pkgs/development/python-modules/torchvision/binary-hashes.nix b/pkgs/development/python-modules/torchvision/binary-hashes.nix
index 177a3ae30a99..43ab9f1790ba 100644
--- a/pkgs/development/python-modules/torchvision/binary-hashes.nix
+++ b/pkgs/development/python-modules/torchvision/binary-hashes.nix
@@ -7,81 +7,81 @@
 
 version:
 builtins.getAttr version {
-  "0.19.0" = {
+  "0.19.1" = {
     x86_64-linux-38 = {
-      name = "torchvision-0.19.0-cp38-cp38-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torchvision-0.19.0%2Bcu121-cp38-cp38-linux_x86_64.whl";
-      hash = "sha256-5GynSUL5Of12jXr29wqhfAciLKj6abBXtAi05u29bys=";
+      name = "torchvision-0.19.1-cp38-cp38-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torchvision-0.19.1%2Bcu121-cp38-cp38-linux_x86_64.whl";
+      hash = "sha256-MFL5ci3Dn9fwJrRKb73vk6so95UgBwEs6E0xPWeWQBE=";
     };
     x86_64-linux-39 = {
-      name = "torchvision-0.19.0-cp39-cp39-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torchvision-0.19.0%2Bcu121-cp39-cp39-linux_x86_64.whl";
-      hash = "sha256-R2KGR72zWQyauWXvtwhTMA1eHGh1lRHumUpvH5fywSM=";
+      name = "torchvision-0.19.1-cp39-cp39-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torchvision-0.19.1%2Bcu121-cp39-cp39-linux_x86_64.whl";
+      hash = "sha256-FFMN7gzEx8BgJPC9zJV/d94NK5DptyIZ3NYh+ilSXQA=";
     };
     x86_64-linux-310 = {
-      name = "torchvision-0.19.0-cp310-cp310-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torchvision-0.19.0%2Bcu121-cp310-cp310-linux_x86_64.whl";
-      hash = "sha256-XuEDx+tH+LCIN+DkixePfsyR12nSthJAuQy1qi0Gznc=";
+      name = "torchvision-0.19.1-cp310-cp310-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torchvision-0.19.1%2Bcu121-cp310-cp310-linux_x86_64.whl";
+      hash = "sha256-uMxL84G3VSKZW2AeB6G0M7X9kl3D40p/ps0i9EnWU3k=";
     };
     x86_64-linux-311 = {
-      name = "torchvision-0.19.0-cp311-cp311-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torchvision-0.19.0%2Bcu121-cp311-cp311-linux_x86_64.whl";
-      hash = "sha256-NpTVJ7SPribGrEpDWWC4tXk9YcXxQgtr77lLM8mm/Ng=";
+      name = "torchvision-0.19.1-cp311-cp311-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torchvision-0.19.1%2Bcu121-cp311-cp311-linux_x86_64.whl";
+      hash = "sha256-U2QXNAaUspzFTDCFB9CYsAy9zB/oaAcqNLVTvtc9nTA=";
     };
     x86_64-linux-312 = {
-      name = "torchvision-0.19.0-cp312-cp312-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torchvision-0.19.0%2Bcu121-cp312-cp312-linux_x86_64.whl";
-      hash = "sha256-9M7FuSc1N6VG5V6eCI++01kM+2kn+IFX1K/s7iPBJek=";
+      name = "torchvision-0.19.1-cp312-cp312-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torchvision-0.19.1%2Bcu121-cp312-cp312-linux_x86_64.whl";
+      hash = "sha256-+wzQYi40nfhK1zutjrvqaxx08DPa3YTZqAz0opGSfq4=";
     };
     aarch64-darwin-38 = {
-      name = "torchvision-0.19.0-cp38-cp38-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.0-cp38-cp38-macosx_11_0_arm64.whl";
-      hash = "sha256-hU6WehapQJ6UG1u+WqNXsj9xWLzLneNa4g/UlF8F7NE=";
+      name = "torchvision-0.19.1-cp38-cp38-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.1-cp38-cp38-macosx_11_0_arm64.whl";
+      hash = "sha256-TE5PWyTqawh7Au1JKrHiG7ozUsRXfi3vFCSM/GBzIzg=";
     };
     aarch64-darwin-39 = {
-      name = "torchvision-0.19.0-cp39-cp39-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.0-cp39-cp39-macosx_11_0_arm64.whl";
-      hash = "sha256-3RJ5Vx1LaNWlPZt6Na7fkcTLHgsICZ9qHv+nsluMlec=";
+      name = "torchvision-0.19.1-cp39-cp39-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.1-cp39-cp39-macosx_11_0_arm64.whl";
+      hash = "sha256-cx9DTZFYZ2niVbXXDtGkRX4KE5SpX0qs8OHn4h+AwJg=";
     };
     aarch64-darwin-310 = {
-      name = "torchvision-0.19.0-cp310-cp310-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.0-cp310-cp310-macosx_11_0_arm64.whl";
-      hash = "sha256-7IdO+F3LJMaeYA9uJ2r4ksgM3j/9rrcnXv2kYyQrwqg=";
+      name = "torchvision-0.19.1-cp310-cp310-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.1-cp310-cp310-macosx_11_0_arm64.whl";
+      hash = "sha256-VOhRMJnm9YY1bHD4CdNPORr3GtGC/gccwyiiivLEBgg=";
     };
     aarch64-darwin-311 = {
-      name = "torchvision-0.19.0-cp311-cp311-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.0-cp311-cp311-macosx_11_0_arm64.whl";
-      hash = "sha256-2/OqcaOJkkT8iEMD7TxGBKFggk/vrHfoIxelRj78HZs=";
+      name = "torchvision-0.19.1-cp311-cp311-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.1-cp311-cp311-macosx_11_0_arm64.whl";
+      hash = "sha256-QFFCgrSJbWJ2W44m1wkcMuF8NYF9AOxL4jYuo7o9F4c=";
     };
     aarch64-darwin-312 = {
-      name = "torchvision-0.19.0-cp312-cp312-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.0-cp312-cp312-macosx_11_0_arm64.whl";
-      hash = "sha256-wJ747RhPqHf2JRtiAibnT2grjx1rNBRWQo1JVbjZxnA=";
+      name = "torchvision-0.19.1-cp312-cp312-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.1-cp312-cp312-macosx_11_0_arm64.whl";
+      hash = "sha256-J+zid/8PbNx/7QYnJ5xjLcsuWBh9p3HsoksPvPP4WQ0=";
     };
     aarch64-linux-38 = {
-      name = "torchvision-0.19.0-cp38-cp38-linux_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.0-cp38-cp38-linux_aarch64.whl";
-      hash = "sha256-B5ppbgsstS5L4wr6jps9fSgPAqK1/+3X6CH6Hv0aWo0=";
+      name = "torchvision-0.19.1-cp38-cp38-linux_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.1-cp38-cp38-linux_aarch64.whl";
+      hash = "sha256-TRC8kIPE1frdft17cpcAp75I2rT2InjfO8c/pI5IoVU=";
     };
     aarch64-linux-39 = {
-      name = "torchvision-0.19.0-cp39-cp39-linux_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.0-cp39-cp39-linux_aarch64.whl";
-      hash = "sha256-X5pZjc+CvfyORDbOdHY7OHfavsOzP5RhO5Tt4T4+Te4=";
+      name = "torchvision-0.19.1-cp39-cp39-linux_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.1-cp39-cp39-linux_aarch64.whl";
+      hash = "sha256-4ygwm4ZwouiJsv52ocJ0SgmcEcmE2pqCI1e9nevWmaU=";
     };
     aarch64-linux-310 = {
-      name = "torchvision-0.19.0-cp310-cp310-linux_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.0-cp310-cp310-linux_aarch64.whl";
-      hash = "sha256-1GfUNABf0Foieiunr0xZG7Z+bUqXu9Bu2o2oP0Pp/Qc=";
+      name = "torchvision-0.19.1-cp310-cp310-linux_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.1-cp310-cp310-linux_aarch64.whl";
+      hash = "sha256-ewYxFhZL5S/G3rR2Lef4yQv6OmX41crxf44tWq3HWgQ=";
     };
     aarch64-linux-311 = {
-      name = "torchvision-0.19.0-cp311-cp311-linux_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.0-cp311-cp311-linux_aarch64.whl";
-      hash = "sha256-Tmqk+j8Lw1mfoHHBSeZRo+a91nyRYXlEePn5FHHEBqI=";
+      name = "torchvision-0.19.1-cp311-cp311-linux_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.1-cp311-cp311-linux_aarch64.whl";
+      hash = "sha256-1xpqb+OlKByjSH1MVq1KrSD/cPgvHXx5vLbnsMKvAMg=";
     };
     aarch64-linux-312 = {
-      name = "torchvision-0.19.0-cp312-cp312-linux_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.0-cp312-cp312-linux_aarch64.whl";
-      hash = "sha256-vg8noouOnyrpijGvNKS90qW/FU2SvXOleXyNIVb7OrY=";
+      name = "torchvision-0.19.1-cp312-cp312-linux_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchvision-0.19.1-cp312-cp312-linux_aarch64.whl";
+      hash = "sha256-wHv0PCoUXXkuzZ0FA9bHNXcUfs5QjUVgDYqsd+TN/Pk=";
     };
   };
 }

From 04ca50fb7fdb45fd1a2758bc30d39657b56660ab Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Thu, 5 Sep 2024 00:15:25 +0200
Subject: [PATCH 080/107] python312Packages.torchaudio: 2.4.0 -> 2.4.1

Diff: https://github.com/pytorch/audio/compare/refs/tags/v2.4.0...v2.4.1

Changelog: https://github.com/pytorch/audio/releases/tag/v2.4.1
---
 .../python-modules/torchaudio/default.nix            | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/python-modules/torchaudio/default.nix b/pkgs/development/python-modules/torchaudio/default.nix
index f736036b1350..760ea740b9f8 100644
--- a/pkgs/development/python-modules/torchaudio/default.nix
+++ b/pkgs/development/python-modules/torchaudio/default.nix
@@ -1,12 +1,16 @@
 {
   lib,
+  symlinkJoin,
   buildPythonPackage,
   fetchFromGitHub,
+
+  # nativeBuildInputs
   cmake,
-  symlinkJoin,
-  ffmpeg-full,
   pkg-config,
   ninja,
+
+  # buildInputs
+  ffmpeg-full,
   pybind11,
   sox,
   torch,
@@ -72,14 +76,14 @@ let
 in
 buildPythonPackage rec {
   pname = "torchaudio";
-  version = "2.4.0";
+  version = "2.4.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "pytorch";
     repo = "audio";
     rev = "refs/tags/v${version}";
-    hash = "sha256-ltBPoFDA7GS9XRHyWeTRn1YTVqdaE/38KnkG4fp7Th8=";
+    hash = "sha256-zQqIIzOW9vboP5XQSOUWB0edz6XJvz06RqbcYPO9K24=";
   };
 
   patches = [ ./0001-setup.py-propagate-cmakeFlags.patch ];

From a48052a5f74720d5e16ebfd8670d031f85dfb83b Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Thu, 5 Sep 2024 00:21:41 +0200
Subject: [PATCH 081/107] python312Packages.torchaudio-bin: 2.4.0 -> 2.4.1

Diff: https://github.com/pytorch/audio/compare/refs/tags/v2.4.0...v2.4.1

Changelog: https://github.com/pytorch/audio/releases/tag/v2.4.1
---
 .../python-modules/torchaudio/bin.nix         | 20 ++--
 .../torchaudio/binary-hashes.nix              | 92 +++++++++----------
 2 files changed, 59 insertions(+), 53 deletions(-)

diff --git a/pkgs/development/python-modules/torchaudio/bin.nix b/pkgs/development/python-modules/torchaudio/bin.nix
index 31b119a26406..60b84d339ce2 100644
--- a/pkgs/development/python-modules/torchaudio/bin.nix
+++ b/pkgs/development/python-modules/torchaudio/bin.nix
@@ -1,22 +1,28 @@
 {
   lib,
   stdenv,
-  addDriverRunpath,
-  autoPatchelfHook,
   buildPythonPackage,
-  cudaPackages,
+  python,
   fetchurl,
+  pythonOlder,
+  pythonAtLeast,
+
+  # buildInputs
+  cudaPackages,
   ffmpeg_6,
   sox,
-  pythonAtLeast,
-  pythonOlder,
-  python,
+
+  # nativeBuildInputs
+  addDriverRunpath,
+  autoPatchelfHook,
+
+  # dependencies
   torch-bin,
 }:
 
 buildPythonPackage rec {
   pname = "torchaudio";
-  version = "2.4.0";
+  version = "2.4.1";
   format = "wheel";
 
   src =
diff --git a/pkgs/development/python-modules/torchaudio/binary-hashes.nix b/pkgs/development/python-modules/torchaudio/binary-hashes.nix
index 53004bc2c0b9..ea62ccc724f5 100644
--- a/pkgs/development/python-modules/torchaudio/binary-hashes.nix
+++ b/pkgs/development/python-modules/torchaudio/binary-hashes.nix
@@ -7,81 +7,81 @@
 
 version:
 builtins.getAttr version {
-  "2.4.0" = {
+  "2.4.1" = {
     x86_64-linux-38 = {
-      name = "torchaudio-2.4.0-cp38-cp38-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torchaudio-2.4.0%2Bcu121-cp38-cp38-linux_x86_64.whl";
-      hash = "sha256-HbbFZ4nETaygQRxSMYg6d3Omqxbx6uSrXrUzRt71RTw=";
+      name = "torchaudio-2.4.1-cp38-cp38-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torchaudio-2.4.1%2Bcu121-cp38-cp38-linux_x86_64.whl";
+      hash = "sha256-/PvxFpkpX2WwRYHNBDcv4CojmAbrfSXaJ0bzXeD10tk=";
     };
     x86_64-linux-39 = {
-      name = "torchaudio-2.4.0-cp39-cp39-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torchaudio-2.4.0%2Bcu121-cp39-cp39-linux_x86_64.whl";
-      hash = "sha256-5wG1xXOR9ApLTdWQtt8eGt+83GwT6zfEW+Kay4pz5vQ=";
+      name = "torchaudio-2.4.1-cp39-cp39-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torchaudio-2.4.1%2Bcu121-cp39-cp39-linux_x86_64.whl";
+      hash = "sha256-cbuwbBAYeZ2zoLzAlN0IuAvCi7e18nq4sOLziwFLEcY=";
     };
     x86_64-linux-310 = {
-      name = "torchaudio-2.4.0-cp310-cp310-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torchaudio-2.4.0%2Bcu121-cp310-cp310-linux_x86_64.whl";
-      hash = "sha256-R+F2Pr3UEID6Otlv9OTyKHgxz6jd51IzrRMpxhOr2lA=";
+      name = "torchaudio-2.4.1-cp310-cp310-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torchaudio-2.4.1%2Bcu121-cp310-cp310-linux_x86_64.whl";
+      hash = "sha256-2oyHyAocE3akjcM+7zCwO73x3yWgW9KxxiC4gRx7Gb4=";
     };
     x86_64-linux-311 = {
-      name = "torchaudio-2.4.0-cp311-cp311-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torchaudio-2.4.0%2Bcu121-cp311-cp311-linux_x86_64.whl";
-      hash = "sha256-KcjEOkm0MDZnvyDNhcP26borSg+0tqrsLgKzstbMbOo=";
+      name = "torchaudio-2.4.1-cp311-cp311-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torchaudio-2.4.1%2Bcu121-cp311-cp311-linux_x86_64.whl";
+      hash = "sha256-AbBO25E1p9YPoBAPwB/7QKCFgBD1ma5kGPQOCeiOaBs=";
     };
     x86_64-linux-312 = {
-      name = "torchaudio-2.4.0-cp312-cp312-linux_x86_64.whl";
-      url = "https://download.pytorch.org/whl/cu121/torchaudio-2.4.0%2Bcu121-cp312-cp312-linux_x86_64.whl";
-      hash = "sha256-gTwbojelvYBZo0BOav9xtc09SXmtCV3PreFZJoCFUDE=";
+      name = "torchaudio-2.4.1-cp312-cp312-linux_x86_64.whl";
+      url = "https://download.pytorch.org/whl/cu121/torchaudio-2.4.1%2Bcu121-cp312-cp312-linux_x86_64.whl";
+      hash = "sha256-a3TXBquoHbX4OMpBTwPT9lmOqIC3IQYGXbycXTwGP+E=";
     };
     aarch64-darwin-38 = {
-      name = "torchaudio-2.4.0-cp38-cp38-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.0-cp38-cp38-macosx_11_0_arm64.whl";
-      hash = "sha256-/D+OzW8Lv8ZU07xSdWp8o1nx2ItPoCkOHNt2OjExt7k=";
+      name = "torchaudio-2.4.1-cp38-cp38-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.1-cp38-cp38-macosx_11_0_arm64.whl";
+      hash = "sha256-TqD9ABQv55XHW8wgowOYG1byMnx/fTIbQqj+8deKr6k=";
     };
     aarch64-darwin-39 = {
-      name = "torchaudio-2.4.0-cp39-cp39-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.0-cp39-cp39-macosx_11_0_arm64.whl";
-      hash = "sha256-H9ZwyAjjIsEBlXoHZR4pk1+G7DiSQ8DEOiTt16GFSEE=";
+      name = "torchaudio-2.4.1-cp39-cp39-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.1-cp39-cp39-macosx_11_0_arm64.whl";
+      hash = "sha256-OtzlUIUJArmqbNI3jM1yCsnsjPMeLrqXQ8zIT/y+dtY=";
     };
     aarch64-darwin-310 = {
-      name = "torchaudio-2.4.0-cp310-cp310-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.0-cp310-cp310-macosx_11_0_arm64.whl";
-      hash = "sha256-cz6dhZuI2r7+rwCOOrK4x4hbKUZgaLS3mkJ2a+RhnkY=";
+      name = "torchaudio-2.4.1-cp310-cp310-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.1-cp310-cp310-macosx_11_0_arm64.whl";
+      hash = "sha256-ZhkJdRkJNAsk9jdBDf7AKoiIZ4FsPbGe1PQQKuEFJEo=";
     };
     aarch64-darwin-311 = {
-      name = "torchaudio-2.4.0-cp311-cp311-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.0-cp311-cp311-macosx_11_0_arm64.whl";
-      hash = "sha256-rLz5Ep/8/OgIJU4sv/EDNjxQXOBu1MQjGz9DahBnnU0=";
+      name = "torchaudio-2.4.1-cp311-cp311-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.1-cp311-cp311-macosx_11_0_arm64.whl";
+      hash = "sha256-YK8VMYFdImWeVBLqQBvtVSoWw4mTjElmTkRuTP1d3AY=";
     };
     aarch64-darwin-312 = {
-      name = "torchaudio-2.4.0-cp312-cp312-macosx_11_0_arm64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.0-cp312-cp312-macosx_11_0_arm64.whl";
-      hash = "sha256-rhOpXvb6vK2w7/NthfUEjXBHSi6XBPqchumQPLzsDUo=";
+      name = "torchaudio-2.4.1-cp312-cp312-macosx_11_0_arm64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.1-cp312-cp312-macosx_11_0_arm64.whl";
+      hash = "sha256-lTlGz2EP/Ve7P90ijv+iES+lHF3+NqlmEe/8kHSj074=";
     };
     aarch64-linux-38 = {
-      name = "torchaudio-2.4.0-cp38-cp38-manylinux2014_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.0-cp38-cp38-linux_aarch64.whl";
-      hash = "sha256-1/6efy/oJQ/eB7IDVsRNdw1fqjyid6vc2jr31IQEj7o=";
+      name = "torchaudio-2.4.1-cp38-cp38-manylinux2014_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.1-cp38-cp38-linux_aarch64.whl";
+      hash = "sha256-dNGc+co9rTlK/Ku35vftmrn1nyVA1QKCbH7D4zmFJR0=";
     };
     aarch64-linux-39 = {
-      name = "torchaudio-2.4.0-cp39-cp39-manylinux2014_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.0-cp39-cp39-linux_aarch64.whl";
-      hash = "sha256-yECJTeEqbdPqV8uw0AhhI6qkgAG6Otme9xT+AJ6ujrk=";
+      name = "torchaudio-2.4.1-cp39-cp39-manylinux2014_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.1-cp39-cp39-linux_aarch64.whl";
+      hash = "sha256-NsfnvGs1jL9Ct2nIAgZ4D6FJfRQamFxrPndo3kRSTpo=";
     };
     aarch64-linux-310 = {
-      name = "torchaudio-2.4.0-cp310-cp310-manylinux2014_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.0-cp310-cp310-linux_aarch64.whl";
-      hash = "sha256-F8tz1DNncdRVzY3ai0iRMHpTRriQpOax1Lc9VlJY/uE=";
+      name = "torchaudio-2.4.1-cp310-cp310-manylinux2014_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.1-cp310-cp310-linux_aarch64.whl";
+      hash = "sha256-VEMRedmpzPP+6umKrOB9ifrp/XKOK8hlbvvXDn7cxvg=";
     };
     aarch64-linux-311 = {
-      name = "torchaudio-2.4.0-cp311-cp311-manylinux2014_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.0-cp311-cp311-linux_aarch64.whl";
-      hash = "sha256-vpacCUZts14Nebiwnf9myu27lWm0LJA6LV4Nsq92Djw=";
+      name = "torchaudio-2.4.1-cp311-cp311-manylinux2014_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.1-cp311-cp311-linux_aarch64.whl";
+      hash = "sha256-dkCq/7IFbhLykGGHsDoiIooJCMh9ApX930sLkjNKKQs=";
     };
     aarch64-linux-312 = {
-      name = "torchaudio-2.4.0-cp312-cp312-manylinux2014_aarch64.whl";
-      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.0-cp312-cp312-linux_aarch64.whl";
-      hash = "sha256-U00ZB7slLs0rqeHWHP9yIP1mCQ5j33s8EJzqd6GdTLg=";
+      name = "torchaudio-2.4.1-cp312-cp312-manylinux2014_aarch64.whl";
+      url = "https://download.pytorch.org/whl/cpu/torchaudio-2.4.1-cp312-cp312-linux_aarch64.whl";
+      hash = "sha256-W2L8exbtcIsMB9Q5MTd5fpL2P8O9VwVgfZe6app88/A=";
     };
   };
 }

From 949f861430d15dcb3eea3049687a61937d0e88d9 Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Mon, 16 Sep 2024 23:41:22 +0200
Subject: [PATCH 082/107] python312Packages.tensordict: skip test_functional
 which requires dynamo

---
 pkgs/development/python-modules/tensordict/default.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/python-modules/tensordict/default.nix b/pkgs/development/python-modules/tensordict/default.nix
index fff726f5beeb..697a8b29b956 100644
--- a/pkgs/development/python-modules/tensordict/default.nix
+++ b/pkgs/development/python-modules/tensordict/default.nix
@@ -73,6 +73,7 @@ buildPythonPackage rec {
       # torch._dynamo.exc.BackendCompilerFailed
       # Requires a more recent version of triton
       # Re-enable when https://github.com/NixOS/nixpkgs/pull/328247 is merged
+      "test_functional"
       "test_linear"
       "test_seq"
       "test_seq_lmbda"

From b883a06aae44c501197a60669c38ce930dcec128 Mon Sep 17 00:00:00 2001
From: Gaetan Lepage <gaetan@glepage.com>
Date: Tue, 24 Sep 2024 17:14:20 +0200
Subject: [PATCH 083/107] python312Packages.coffea: 2024.8.3 -> 2024.9.0

Diff: https://github.com/CoffeaTeam/coffea/compare/refs/tags/v2024.8.3...v2024.9.0

Changelog: https://github.com/CoffeaTeam/coffea/releases/tag/v2024.9.0
---
 pkgs/development/python-modules/coffea/default.nix | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/pkgs/development/python-modules/coffea/default.nix b/pkgs/development/python-modules/coffea/default.nix
index 91e270c7046d..cd97bc6cbd1a 100644
--- a/pkgs/development/python-modules/coffea/default.nix
+++ b/pkgs/development/python-modules/coffea/default.nix
@@ -1,7 +1,6 @@
 {
   lib,
   buildPythonPackage,
-  pythonOlder,
   fetchFromGitHub,
 
   # build-system
@@ -43,16 +42,14 @@
 
 buildPythonPackage rec {
   pname = "coffea";
-  version = "2024.8.3";
+  version = "2024.9.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.8";
-
   src = fetchFromGitHub {
     owner = "CoffeaTeam";
     repo = "coffea";
     rev = "refs/tags/v${version}";
-    hash = "sha256-aOe1U0IWQIgTJgUAs6WZWQmYnOTzdS+hRlK9QgU3qqk=";
+    hash = "sha256-IX9c1EhQfFF2Gsn8atxngJ4gpgrwX5SnolUQ3nphhUY=";
   };
 
   build-system = [

From e0464e47880a69896f0fb1810f00e0de469f770a Mon Sep 17 00:00:00 2001
From: Artturin <Artturin@artturin.com>
Date: Tue, 24 Sep 2024 18:50:49 +0300
Subject: [PATCH 084/107] treewide: replace `stdenv.is` with
 `stdenv.hostPlatform.is`

In preparation for the deprecation of `stdenv.isX`.

These shorthands are not conducive to cross-compilation because they
hide the platforms.

Darwin might get cross-compilation for which the continued usage of `stdenv.isDarwin` will get in the way

One example of why this is bad and especially affects compiler packages
https://www.github.com/NixOS/nixpkgs/pull/343059

There are too many files to go through manually but a treewide should
get users thinking when they see a `hostPlatform.isX` in a place where it
doesn't make sense.

```
fd --type f "\.nix" | xargs sd --fixed-strings "stdenv.is" "stdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "stdenv'.is" "stdenv'.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "clangStdenv.is" "clangStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "gccStdenv.is" "gccStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "stdenvNoCC.is" "stdenvNoCC.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "inherit (stdenv) is" "inherit (stdenv.hostPlatform) is"
fd --type f "\.nix" | xargs sd --fixed-strings "buildStdenv.is" "buildStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "effectiveStdenv.is" "effectiveStdenv.hostPlatform.is"
fd --type f "\.nix" | xargs sd --fixed-strings "originalStdenv.is" "originalStdenv.hostPlatform.is"
```
---
 flake.nix                                     |   2 +-
 lib/tests/test-with-nix.nix                   |   2 +-
 .../convert-to-import-cargo-lock/shell.nix    |   2 +-
 nixos/modules/config/fonts/fontconfig.nix     |   2 +-
 nixos/modules/config/ldso.nix                 |   4 +-
 nixos/modules/config/pulseaudio.nix           |   2 +-
 nixos/modules/config/stub-ld.nix              |   2 +-
 nixos/modules/hardware/graphics.nix           |   4 +-
 nixos/modules/profiles/all-hardware.nix       |   4 +-
 nixos/modules/services/audio/jack.nix         |   2 +-
 .../services/desktops/pipewire/pipewire.nix   |   2 +-
 nixos/modules/services/logging/promtail.nix   |   2 +-
 nixos/modules/services/misc/mame.nix          |   2 +-
 nixos/modules/services/misc/tabby.nix         |   2 +-
 nixos/modules/services/networking/cjdns.nix   |   2 +-
 nixos/modules/services/networking/nsd.nix     |   4 +-
 nixos/modules/services/video/frigate.nix      |   2 +-
 nixos/modules/system/boot/stage-1.nix         |   2 +-
 nixos/modules/system/boot/systemd.nix         |   2 +-
 nixos/modules/tasks/network-interfaces.nix    |   2 +-
 nixos/modules/virtualisation/docker.nix       |   2 +-
 nixos/modules/virtualisation/xen-dom0.nix     |   2 +-
 nixos/tests/filesender.nix                    |   2 +-
 nixos/tests/freetube.nix                      |   2 +-
 nixos/tests/installed-tests/gdk-pixbuf.nix    |   2 +-
 nixos/tests/k3s/multi-node.nix                |   2 +-
 nixos/tests/libvirtd.nix                      |   2 +-
 nixos/tests/pulseaudio.nix                    |   4 +-
 nixos/tests/stub-ld.nix                       |   2 +-
 nixos/tests/sunshine.nix                      |   2 +-
 nixos/tests/wine.nix                          |   2 +-
 pkgs/applications/audio/ario/default.nix      |   2 +-
 pkgs/applications/audio/ashuffle/default.nix  |   2 +-
 pkgs/applications/audio/aucatctl/default.nix  |   4 +-
 pkgs/applications/audio/audacity/default.nix  |  14 +-
 pkgs/applications/audio/cardinal/default.nix  |   2 +-
 pkgs/applications/audio/cd-discid/default.nix |   2 +-
 .../applications/audio/cdparanoia/default.nix |   4 +-
 pkgs/applications/audio/chuck/default.nix     |   8 +-
 pkgs/applications/audio/cmus/default.nix      |   8 +-
 pkgs/applications/audio/cmusfm/default.nix    |   2 +-
 pkgs/applications/audio/csound/default.nix    |   8 +-
 pkgs/applications/audio/eartag/default.nix    |   2 +-
 .../audio/easyaudiosync/default.nix           |   6 +-
 pkgs/applications/audio/eq10q/default.nix     |   2 +-
 pkgs/applications/audio/espeak-ng/default.nix |   6 +-
 .../applications/audio/fluidsynth/default.nix |   4 +-
 pkgs/applications/audio/ft2-clone/default.nix |   4 +-
 .../applications/audio/glicol-cli/default.nix |   4 +-
 .../audio/gnome-podcasts/default.nix          |   2 +-
 .../audio/go-musicfox/default.nix             |   2 +-
 .../applications/audio/grandorgue/default.nix |   8 +-
 pkgs/applications/audio/gst123/default.nix    |   2 +-
 .../audio/hivelytracker/default.nix           |   2 +-
 pkgs/applications/audio/jamesdsp/default.nix  |   2 +-
 pkgs/applications/audio/jellycli/default.nix  |   2 +-
 pkgs/applications/audio/librespot/default.nix |   4 +-
 .../audio/listenbrainz-mpd/default.nix        |   4 +-
 .../audio/littlegptracker/default.nix         |  14 +-
 pkgs/applications/audio/master_me/default.nix |   6 +-
 .../audio/mellowplayer/default.nix            |   2 +-
 .../audio/midivisualizer/default.nix          |   6 +-
 .../audio/miniaudicle/default.nix             |   2 +-
 pkgs/applications/audio/minidsp/default.nix   |   6 +-
 pkgs/applications/audio/mixxx/default.nix     |   2 +-
 pkgs/applications/audio/moc/default.nix       |   4 +-
 pkgs/applications/audio/mopidy/mopidy.nix     |   2 +-
 .../applications/audio/mp3blaster/default.nix |   2 +-
 pkgs/applications/audio/mpc/default.nix       |   2 +-
 pkgs/applications/audio/musescore/default.nix |  22 +-
 pkgs/applications/audio/muso/default.nix      |   4 +-
 pkgs/applications/audio/ncspot/default.nix    |   6 +-
 .../audio/open-music-kontrollers/generic.nix  |   2 +-
 pkgs/applications/audio/openutau/default.nix  |   8 +-
 pkgs/applications/audio/opustags/default.nix  |   4 +-
 pkgs/applications/audio/parrot/default.nix    |   2 +-
 .../audio/pd-plugins/helmholtz/default.nix    |   2 +-
 pkgs/applications/audio/pithos/default.nix    |   2 +-
 .../audio/plugin-torture/default.nix          |   2 +-
 pkgs/applications/audio/polyphone/default.nix |   2 +-
 pkgs/applications/audio/pt2-clone/default.nix |   2 +-
 pkgs/applications/audio/puredata/default.nix  |   8 +-
 .../applications/audio/quadrafuzz/default.nix |   2 +-
 .../audio/radiotray-ng/default.nix            |   2 +-
 pkgs/applications/audio/reaper/default.nix    |  20 +-
 pkgs/applications/audio/rkrlv2/default.nix    |   2 +-
 .../audio/schismtracker/default.nix           |   8 +-
 pkgs/applications/audio/scream/default.nix    |   4 +-
 pkgs/applications/audio/sfxr/default.nix      |   2 +-
 pkgs/applications/audio/snapcast/default.nix  |   6 +-
 pkgs/applications/audio/snd/default.nix       |   4 +-
 pkgs/applications/audio/sonobus/default.nix   |   6 +-
 pkgs/applications/audio/sorcer/default.nix    |   2 +-
 .../audio/soundtracker/default.nix            |   2 +-
 .../audio/speech-denoiser/default.nix         |   2 +-
 .../audio/spotify-player/default.nix          |  10 +-
 .../applications/audio/spotify-qt/default.nix |   2 +-
 pkgs/applications/audio/spotify/darwin.nix    |   2 +-
 pkgs/applications/audio/spotify/default.nix   |   2 +-
 .../audio/stone-phaser/default.nix            |   2 +-
 .../applications/audio/strawberry/default.nix |   4 +-
 pkgs/applications/audio/tauon/default.nix     |   2 +-
 pkgs/applications/audio/tenacity/default.nix  |   4 +-
 pkgs/applications/audio/termusic/default.nix  |   4 +-
 .../audio/virtual-ans/default.nix             |  10 +-
 .../audio/vorbis-tools/default.nix            |   2 +-
 pkgs/applications/audio/wavegain/default.nix  |   2 +-
 .../audio/x42-avldrums/default.nix            |   2 +-
 .../audio/x42-gmsynth/default.nix             |   2 +-
 pkgs/applications/audio/xmp/default.nix       |   4 +-
 .../audio/youtube-music/default.nix           |  12 +-
 pkgs/applications/audio/zrythm/default.nix    |   2 +-
 .../audio/zynaddsubfx/default.nix             |   8 +-
 pkgs/applications/backup/vorta/default.nix    |   2 +-
 .../blockchains/alfis/default.nix             |  10 +-
 .../applications/blockchains/besu/default.nix |   4 +-
 .../blockchains/bitcoin-abc/default.nix       |   2 +-
 .../blockchains/bitcoin-knots/default.nix     |   8 +-
 .../blockchains/bitcoin/default.nix           |  10 +-
 .../blockchains/clightning/default.nix        |   6 +-
 .../blockchains/electrs/default.nix           |   2 +-
 .../blockchains/elements/default.nix          |   8 +-
 .../blockchains/groestlcoin/default.nix       |   8 +-
 .../blockchains/haven-cli/default.nix         |   4 +-
 .../blockchains/lighthouse/default.nix        |   4 +-
 .../blockchains/litecoin/default.nix          |   4 +-
 .../blockchains/miniscript/default.nix        |   2 +-
 .../blockchains/monero-cli/default.nix        |   6 +-
 .../blockchains/monero-gui/default.nix        |   4 +-
 .../blockchains/optimism/geth.nix             |   2 +-
 .../blockchains/particl-core/default.nix      |   2 +-
 .../blockchains/polkadot/default.nix          |   4 +-
 .../blockchains/snarkos/default.nix           |   6 +-
 .../blockchains/solana-validator/default.nix  |   6 +-
 .../applications/blockchains/teos/default.nix |   4 +-
 pkgs/applications/blockchains/ton/default.nix |   2 +-
 .../blockchains/wownero/default.nix           |   2 +-
 .../blockchains/zcash/default.nix             |   4 +-
 .../display-managers/emptty/default.nix       |   2 +-
 .../editors/codeblocks/default.nix            |   6 +-
 pkgs/applications/editors/dit/default.nix     |   2 +-
 .../emacs/elisp-packages/melpa-packages.nix   |   6 +-
 .../applications/editors/emacs/make-emacs.nix |  30 +--
 pkgs/applications/editors/gedit/default.nix   |   2 +-
 pkgs/applications/editors/heh/default.nix     |   2 +-
 .../editors/jetbrains/default.nix             |  30 +--
 .../jetbrains/plugins/specialPlugins.nix      |   2 +-
 pkgs/applications/editors/lapce/default.nix   |  10 +-
 .../editors/libresprite/default.nix           |   6 +-
 pkgs/applications/editors/lite-xl/default.nix |   2 +-
 .../editors/mindforger/default.nix            |   2 +-
 pkgs/applications/editors/nedit/default.nix   |   2 +-
 .../editors/neovim/gnvim/wrapper.nix          |   2 +-
 pkgs/applications/editors/neovim/wrapper.nix  |   2 +-
 .../editors/notepad-next/default.nix          |   4 +-
 pkgs/applications/editors/nvi/default.nix     |   2 +-
 .../applications/editors/qxmledit/default.nix |   2 +-
 pkgs/applications/editors/rehex/default.nix   |   8 +-
 pkgs/applications/editors/rstudio/default.nix |   2 +-
 .../editors/sublime/2/default.nix             |   2 +-
 .../applications/editors/sublime/3/common.nix |   6 +-
 .../applications/editors/sublime/4/common.nix |   2 +-
 pkgs/applications/editors/texmacs/default.nix |   8 +-
 .../editors/texstudio/default.nix             |   4 +-
 .../applications/editors/texworks/default.nix |   2 +-
 pkgs/applications/editors/tijolo/default.nix  |   2 +-
 pkgs/applications/editors/vim/full.nix        |   8 +-
 .../vim/plugins/avante-nvim/default.nix       |   2 +-
 .../editors/vim/plugins/overrides.nix         |  18 +-
 .../editors/vim/plugins/vim-clap/default.nix  |   2 +-
 pkgs/applications/editors/vim/vimacs.nix      |   2 +-
 .../chenglou92.rescript-vscode/default.nix    |   4 +-
 .../editors/vscode/extensions/default.nix     |   4 +-
 .../ms-dotnettools.csdevkit/default.nix       |   2 +-
 .../ms-dotnettools.csharp/default.nix         |   2 +-
 .../rust-lang.rust-analyzer/default.nix       |   2 +-
 .../extensions/sourcery.sourcery/default.nix  |   4 +-
 .../vadimcn.vscode-lldb/default.nix           |  12 +-
 pkgs/applications/editors/vscode/generic.nix  |  16 +-
 pkgs/applications/editors/vscode/vscode.nix   |   8 +-
 pkgs/applications/editors/vscode/vscodium.nix |   6 +-
 .../editors/vscode/with-extensions.nix        |   2 +-
 .../editors/wxhexeditor/default.nix           |   2 +-
 pkgs/applications/editors/xedit/default.nix   |   4 +-
 .../editors/xmlcopyeditor/default.nix         |   2 +-
 pkgs/applications/editors/zee/default.nix     |   2 +-
 pkgs/applications/emulators/86box/default.nix |  12 +-
 .../emulators/bsnes/ares/default.nix          |  14 +-
 .../emulators/bsnes/bsnes-hd/default.nix      |  16 +-
 .../emulators/bsnes/higan/default.nix         |  20 +-
 .../emulators/dolphin-emu/default.nix         |  10 +-
 .../emulators/dolphin-emu/primehack.nix       |  14 +-
 .../applications/emulators/dosbox/default.nix |   2 +-
 .../emulators/goldberg-emu/default.nix        |   2 +-
 pkgs/applications/emulators/mame/default.nix  |   6 +-
 .../emulators/retroarch/cores.nix             |   2 +-
 .../emulators/retroarch/default.nix           |  12 +-
 pkgs/applications/emulators/ripes/default.nix |   4 +-
 .../applications/emulators/ruffle/default.nix |  12 +-
 .../emulators/tamatool/default.nix            |   2 +-
 pkgs/applications/emulators/wine/base.nix     |  18 +-
 pkgs/applications/emulators/wine/default.nix  |   2 +-
 pkgs/applications/emulators/wine/staging.nix  |   2 +-
 .../applications/file-managers/lf/default.nix |   2 +-
 .../applications/file-managers/mc/default.nix |   4 +-
 .../file-managers/projectable/default.nix     |   2 +-
 pkgs/applications/gis/gmt/default.nix         |   2 +-
 pkgs/applications/gis/grass/default.nix       |   8 +-
 .../gis/spatialite-gui/default.nix            |   6 +-
 pkgs/applications/gis/udig/default.nix        |   2 +-
 .../gis/whitebox-tools/default.nix            |   2 +-
 .../applications/graphics/ImageMagick/6.x.nix |   2 +-
 .../graphics/ImageMagick/default.nix          |   2 +-
 .../graphics/antimony/default.nix             |   2 +-
 pkgs/applications/graphics/artem/default.nix  |   2 +-
 .../graphics/autotrace/default.nix            |   2 +-
 .../graphics/azpainter/default.nix            |   2 +-
 pkgs/applications/graphics/c3d/default.nix    |   4 +-
 .../applications/graphics/comical/default.nix |   2 +-
 pkgs/applications/graphics/curv/default.nix   |   4 +-
 pkgs/applications/graphics/dia/default.nix    |   2 +-
 pkgs/applications/graphics/djview/default.nix |   6 +-
 pkgs/applications/graphics/drawio/default.nix |  14 +-
 .../graphics/drawpile/default.nix             |   2 +-
 pkgs/applications/graphics/emblem/default.nix |   4 +-
 .../graphics/emulsion/default.nix             |   6 +-
 pkgs/applications/graphics/epick/default.nix  |   8 +-
 .../graphics/evilpixie/default.nix            |   4 +-
 pkgs/applications/graphics/f3d/default.nix    |   4 +-
 pkgs/applications/graphics/feh/default.nix    |   2 +-
 pkgs/applications/graphics/fstl/default.nix   |   2 +-
 pkgs/applications/graphics/gimp/default.nix   |   8 +-
 .../graphics/gnome-obfuscate/default.nix      |   4 +-
 .../graphics/icon-library/default.nix         |   4 +-
 pkgs/applications/graphics/imagej/default.nix |   4 +-
 pkgs/applications/graphics/imv/default.nix    |   2 +-
 .../graphics/inkscape/default.nix             |   8 +-
 pkgs/applications/graphics/lorien/default.nix |   4 +-
 .../applications/graphics/menyoki/default.nix |   6 +-
 .../graphics/oculante/default.nix             |   6 +-
 .../graphics/openscad/default.nix             |   8 +-
 pkgs/applications/graphics/ovito/default.nix  |   4 +-
 .../graphics/panotools/default.nix            |   2 +-
 pkgs/applications/graphics/qosmic/default.nix |   4 +-
 pkgs/applications/graphics/qvge/default.nix   |   2 +-
 .../graphics/rawtherapee/default.nix          |  10 +-
 pkgs/applications/graphics/rx/default.nix     |   4 +-
 .../sane/backends/brscan4/default.nix         |   4 +-
 .../sane/backends/brscan5/default.nix         |   2 +-
 .../graphics/sane/backends/default.nix        |   2 +-
 .../graphics/symbolic-preview/default.nix     |   2 +-
 .../graphics/synfigstudio/default.nix         |   2 +-
 .../graphics/tesseract/tesseract5.nix         |   2 +-
 pkgs/applications/graphics/tev/default.nix    |   2 +-
 .../graphics/vengi-tools/default.nix          |  12 +-
 .../graphics/vimiv-qt/default.nix             |   2 +-
 pkgs/applications/graphics/vpv/default.nix    |   2 +-
 pkgs/applications/graphics/weylus/default.nix |  10 +-
 .../graphics/xournalpp/default.nix            |   2 +-
 pkgs/applications/kde/falkon.nix              |   2 +-
 .../misc/1password-gui/default.nix            |   4 +-
 pkgs/applications/misc/1password/default.nix  |   8 +-
 pkgs/applications/misc/anup/default.nix       |   2 +-
 pkgs/applications/misc/audio/sox/default.nix  |   6 +-
 .../misc/bambu-studio/default.nix             |   2 +-
 pkgs/applications/misc/bb/default.nix         |   6 +-
 pkgs/applications/misc/binocle/default.nix    |   4 +-
 pkgs/applications/misc/blender/default.nix    |  30 +--
 pkgs/applications/misc/boatswain/default.nix  |   2 +-
 pkgs/applications/misc/calibre/default.nix    |   2 +-
 pkgs/applications/misc/cardpeek/default.nix   |   6 +-
 pkgs/applications/misc/citations/default.nix  |   2 +-
 pkgs/applications/misc/clipqr/default.nix     |   2 +-
 pkgs/applications/misc/cloak/default.nix      |   2 +-
 pkgs/applications/misc/cobalt/default.nix     |   2 +-
 pkgs/applications/misc/collision/default.nix  |   2 +-
 pkgs/applications/misc/conceal/default.nix    |   2 +-
 pkgs/applications/misc/coolreader/default.nix |   2 +-
 pkgs/applications/misc/cotp/default.nix       |   4 +-
 .../misc/cubiomes-viewer/default.nix          |   2 +-
 pkgs/applications/misc/diebahn/default.nix    |   4 +-
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 .../misc/qsyncthingtray/default.nix           |   6 +-
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 .../misc/rust-traverse/default.nix            |   2 +-
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 pkgs/applications/misc/sioyek/default.nix     |   6 +-
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 .../misc/syncthingtray/default.nix            |  14 +-
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 .../misc/terminal-typeracer/default.nix       |   2 +-
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 .../applications/misc/tui-journal/default.nix |   2 +-
 pkgs/applications/misc/ubpm/default.nix       |   2 +-
 pkgs/applications/misc/udict/default.nix      |   2 +-
 pkgs/applications/misc/usb-reset/default.nix  |   2 +-
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 pkgs/applications/misc/viking/default.nix     |   4 +-
 pkgs/applications/misc/visidata/default.nix   |   2 +-
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 pkgs/applications/misc/workrave/default.nix   |   2 +-
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 pkgs/applications/misc/xmrig/default.nix      |   2 +-
 pkgs/applications/misc/xmrig/proxy.nix        |   2 +-
 pkgs/applications/misc/xpdf/default.nix       |   4 +-
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 .../misc/zathura/core/default.nix             |   4 +-
 .../misc/zathura/pdf-mupdf/default.nix        |   2 +-
 pkgs/applications/misc/zine/default.nix       |   2 +-
 .../networking/adguardian/default.nix         |   2 +-
 .../networking/avalanchego/default.nix        |   2 +-
 .../networking/browsers/asuka/default.nix     |   2 +-
 .../networking/browsers/brave/default.nix     |   4 +-
 .../networking/browsers/brave/make-brave.nix  |   4 +-
 .../networking/browsers/chromium/default.nix  |   2 +-
 .../networking/browsers/elinks/default.nix    |   4 +-
 .../networking/browsers/firefox/common.nix    |  22 +-
 .../networking/browsers/firefox/wrapper.nix   |   2 +-
 .../networking/browsers/kristall/default.nix  |   2 +-
 .../networking/browsers/ladybird/default.nix  |  12 +-
 .../networking/browsers/lagrange/default.nix  |   4 +-
 .../networking/browsers/links2/default.nix    |   6 +-
 .../networking/browsers/netsurf/browser.nix   |   2 +-
 .../browsers/qutebrowser/default.nix          |   4 +-
 .../networking/browsers/vivaldi/default.nix   |   4 +-
 .../networking/browsers/w3m/default.nix       |   6 +-
 .../networking/cloudflared/default.nix        |   2 +-
 .../networking/cluster/click/default.nix      |   6 +-
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 .../networking/cluster/hadoop/default.nix     |  10 +-
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 .../networking/cluster/k9s/default.nix        |   2 +-
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 .../kubectl-view-allocations/default.nix      |   2 +-
 .../networking/cluster/lens/default.nix       |   2 +-
 .../networking/cluster/minikube/default.nix   |   6 +-
 .../cluster/node-problem-detector/default.nix |   8 +-
 .../networking/cluster/ocm/default.nix        |   2 +-
 .../networking/cluster/rke2/builder.nix       |   2 +-
 .../cluster/temporal-cli/default.nix          |   2 +-
 .../networking/compactor/default.nix          |   2 +-
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 .../networking/dyndns/dyndnsc/default.nix     |   2 +-
 .../feedreaders/newsboat/default.nix          |   8 +-
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 .../networking/feedreaders/russ/default.nix   |   2 +-
 .../feedreaders/tuifeed/default.nix           |   2 +-
 .../networking/ftp/filezilla/default.nix      |   4 +-
 .../networking/gdrive3/default.nix            |   2 +-
 .../networking/gopher/phetch/default.nix      |   2 +-
 .../networking/gopher/sacc/default.nix        |   2 +-
 .../networking/ids/suricata/default.nix       |   2 +-
 .../networking/ids/zeek/broker/default.nix    |   4 +-
 .../networking/ids/zeek/default.nix           |   8 +-
 .../caprine-bin/default.nix                   |   2 +-
 .../chatterino2/default.nix                   |   4 +-
 .../instant-messengers/dino/default.nix       |   4 +-
 .../instant-messengers/discord/default.nix    |  10 +-
 .../element/element-desktop.nix               |   4 +-
 .../element/keytar/default.nix                |   6 +-
 .../element/seshat/default.nix                |   2 +-
 .../instant-messengers/freetalk/default.nix   |   4 +-
 .../instant-messengers/go-neb/default.nix     |   2 +-
 .../instant-messengers/gomuks/default.nix     |   2 +-
 .../instant-messengers/gurk-rs/default.nix    |   4 +-
 .../instant-messengers/iamb/default.nix       |   2 +-
 .../instant-messengers/jami/default.nix       |   2 +-
 .../jitsi-meet-electron/default.nix           |  10 +-
 .../instant-messengers/mikutter/default.nix   |   8 +-
 .../instant-messengers/nchat/default.nix      |   2 +-
 .../pantalaimon/default.nix                   |   2 +-
 .../instant-messengers/pidgin/default.nix     |  12 +-
 .../pidgin-plugins/tdlib-purple/default.nix   |   2 +-
 .../instant-messengers/qtox/default.nix       |   6 +-
 .../instant-messengers/quaternion/default.nix |   2 +-
 .../instant-messengers/signal-cli/default.nix |   6 +-
 .../signalbackup-tools/default.nix            |   6 +-
 .../instant-messengers/slack/default.nix      |   2 +-
 .../instant-messengers/teamspeak/server.nix   |   4 +-
 .../telegram/kotatogram-desktop/default.nix   |  22 +-
 .../telegram/kotatogram-desktop/tg_owt.nix    |   6 +-
 .../telegram/telegram-desktop/default.nix     |  20 +-
 .../telegram/tg/default.nix                   |   2 +-
 .../telepathy/logger/default.nix              |   2 +-
 .../telepathy/mission-control/default.nix     |   2 +-
 .../instant-messengers/tensor/default.nix     |   2 +-
 .../instant-messengers/twitch-tui/default.nix |   2 +-
 .../vk-messenger/default.nix                  |   2 +-
 .../wire-desktop/default.nix                  |   2 +-
 .../networking/irc/communi/default.nix        |   6 +-
 .../networking/irc/convos/default.nix         |   4 +-
 .../networking/irc/epic5/default.nix          |   2 +-
 .../networking/irc/thelounge/default.nix      |   2 +-
 .../networking/irc/tiny/default.nix           |  10 +-
 .../networking/irc/weechat/default.nix        |  12 +-
 .../scripts/weechat-matrix-bridge/default.nix |   2 +-
 .../networking/irc/wraith/default.nix         |   2 +-
 pkgs/applications/networking/iroh/default.nix |   2 +-
 .../kubo-migrator/all-migrations.nix          |   2 +-
 .../mailreaders/claws-mail/default.nix        |   2 +-
 .../networking/mailreaders/mmh/default.nix    |   2 +-
 .../mailreaders/sylpheed/default.nix          |   4 +-
 .../applications/networking/mhost/default.nix |   2 +-
 .../networking/mkchromecast/default.nix       |   6 +-
 pkgs/applications/networking/mpop/default.nix |   4 +-
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 .../networking/mujmap/default.nix             |   2 +-
 .../networking/mullvad/openvpn.nix            |   4 +-
 .../applications/networking/nload/default.nix |   2 +-
 pkgs/applications/networking/nym/default.nix  |   2 +-
 .../networking/offrss/default.nix             |   4 +-
 .../networking/omping/default.nix             |   2 +-
 .../networking/onionshare/default.nix         |   4 +-
 .../networking/p2p/eiskaltdcpp/default.nix    |   2 +-
 .../p2p/enhanced-ctorrent/default.nix         |   2 +-
 .../networking/p2p/mldonkey/default.nix       |   2 +-
 .../networking/p2p/pyrosimple/default.nix     |   2 +-
 .../networking/p2p/qbittorrent/default.nix    |   6 +-
 .../networking/p2p/synapse-bt/default.nix     |   2 +-
 .../networking/p2p/transmission/4.nix         |   8 +-
 .../networking/p2p/tremc/default.nix          |   4 +-
 .../applications/networking/pjsip/default.nix |   8 +-
 .../networking/qv2ray/default.nix             |   4 +-
 .../remote/citrix-workspace/generic.nix       |   2 +-
 .../remote/citrix-workspace/sources.nix       |   6 +-
 .../networking/remote/freerdp/3.nix           |  10 +-
 .../networking/remote/freerdp/default.nix     |  10 +-
 .../networking/remote/putty/default.nix       |   2 +-
 .../networking/remote/rdesktop/default.nix    |   4 +-
 .../networking/remote/remmina/default.nix     |  14 +-
 .../networking/rymdport/default.nix           |   2 +-
 .../sniffers/qtwirediff/default.nix           |   6 +-
 .../networking/sniffers/wireshark/default.nix |  12 +-
 .../networking/sniffnet/default.nix           |   6 +-
 .../networking/sync/celeste/default.nix       |   4 +-
 .../networking/sync/lsyncd/default.nix        |   2 +-
 .../networking/sync/rclone/default.nix        |   6 +-
 .../networking/syncplay/default.nix           |   4 +-
 .../networking/syncthing/default.nix          |   6 +-
 .../synology-drive-client/default.nix         |   2 +-
 .../networking/umurmur/default.nix            |   2 +-
 pkgs/applications/networking/warp/default.nix |   4 +-
 pkgs/applications/networking/yaup/default.nix |   2 +-
 pkgs/applications/office/PageEdit/default.nix |   2 +-
 pkgs/applications/office/appflowy/default.nix |  12 +-
 .../office/beamerpresenter/default.nix        |   2 +-
 pkgs/applications/office/espanso/default.nix  |  22 +-
 pkgs/applications/office/jameica/default.nix  |   6 +-
 pkgs/applications/office/kitsas/default.nix   |   4 +-
 .../office/libreoffice/wrapper.nix            |   2 +-
 pkgs/applications/office/micropad/default.nix |   2 +-
 pkgs/applications/office/mmex/default.nix     |  10 +-
 .../office/paperless-ngx/default.nix          |   6 +-
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 pkgs/applications/office/qnotero/default.nix  |   2 +-
 .../applications/office/qownnotes/default.nix |   8 +-
 .../office/roam-research/default.nix          |   2 +-
 pkgs/applications/office/scribus/default.nix  |   2 +-
 .../office/treesheets/default.nix             |   4 +-
 pkgs/applications/office/trilium/desktop.nix  |   2 +-
 .../office/wordgrinder/default.nix            |   8 +-
 pkgs/applications/office/zim/default.nix      |   2 +-
 pkgs/applications/printing/pappl/default.nix  |   2 +-
 pkgs/applications/radio/airspy/default.nix    |   2 +-
 pkgs/applications/radio/csdr/default.nix      |   4 +-
 pkgs/applications/radio/cubicsdr/default.nix  |   4 +-
 pkgs/applications/radio/direwolf/default.nix  |   4 +-
 pkgs/applications/radio/dump1090/default.nix  |   2 +-
 pkgs/applications/radio/fldigi/default.nix    |   2 +-
 pkgs/applications/radio/flex-ndax/default.nix |   2 +-
 pkgs/applications/radio/freedv/default.nix    |  12 +-
 pkgs/applications/radio/gnuradio/3.8.nix      |   4 +-
 pkgs/applications/radio/gnuradio/default.nix  |   4 +-
 pkgs/applications/radio/gnuradio/shared.nix   |   4 +-
 pkgs/applications/radio/gnuradio/wrapper.nix  |   4 +-
 pkgs/applications/radio/limesuite/default.nix |   2 +-
 .../radio/m17-cxx-demod/default.nix           |   2 +-
 .../radio/multimon-ng/default.nix             |   2 +-
 pkgs/applications/radio/pat/default.nix       |   4 +-
 pkgs/applications/radio/qdmr/default.nix      |   2 +-
 pkgs/applications/radio/qlog/default.nix      |   2 +-
 pkgs/applications/radio/rtl-sdr/default.nix   |   2 +-
 pkgs/applications/radio/sdrplay/default.nix   |   6 +-
 pkgs/applications/radio/sdrpp/default.nix     |   6 +-
 .../radio/soapyairspy/default.nix             |   2 +-
 .../applications/radio/soapyaudio/default.nix |   4 +-
 .../radio/soapybladerf/default.nix            |   2 +-
 .../radio/soapyhackrf/default.nix             |   2 +-
 .../radio/soapyremote/default.nix             |   2 +-
 .../radio/soapyrtlsdr/default.nix             |   2 +-
 pkgs/applications/radio/soapyuhd/default.nix  |   2 +-
 pkgs/applications/radio/splat/default.nix     |   2 +-
 pkgs/applications/radio/ubertooth/default.nix |   2 +-
 pkgs/applications/radio/uhd/default.nix       |   4 +-
 .../science/astronomy/gildas/default.nix      |   8 +-
 .../science/astronomy/gravit/default.nix      |   2 +-
 .../science/astronomy/stellarium/default.nix  |  10 +-
 .../science/biology/ants/default.nix          |   2 +-
 .../science/biology/blast/bin.nix             |   4 +-
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 .../science/biology/bwa-mem2/default.nix      |   2 +-
 .../science/biology/cmtk/default.nix          |   2 +-
 .../science/biology/delly/default.nix         |   2 +-
 .../science/biology/iqtree/default.nix        |   2 +-
 .../science/biology/iv/default.nix            |   2 +-
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 .../science/biology/obitools/obitools3.nix    |   2 +-
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 .../chemistry/autodock-vina/default.nix       |   2 +-
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 .../timeloop/default.nix                      |   6 +-
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 .../hal-hardware-analyzer/default.nix         |   4 +-
 .../science/electronics/kicad/base.nix        |   2 +-
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 .../electronics/nanovna-saver/default.nix     |   2 +-
 .../electronics/openboardview/default.nix     |   6 +-
 .../science/electronics/pulseview/default.nix |   4 +-
 .../science/electronics/sv-lang/default.nix   |   2 +-
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 .../science/logic/nuXmv/default.nix           |   8 +-
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 .../finalfrontier/default.nix                 |   2 +-
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 pkgs/applications/science/math/R/default.nix  |   6 +-
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 .../science/math/geogebra/geogebra6.nix       |   2 +-
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 pkgs/tools/networking/bore-cli/default.nix    |   2 +-
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 pkgs/tools/networking/boringtun/default.nix   |   2 +-
 pkgs/tools/networking/cfspeedtest/default.nix |   2 +-
 pkgs/tools/networking/chrony/default.nix      |   4 +-
 pkgs/tools/networking/cjdns/default.nix       |   4 +-
 pkgs/tools/networking/cntlm/default.nix       |   2 +-
 pkgs/tools/networking/cocom/default.nix       |   2 +-
 .../networking/croc/test-local-relay.nix      |   2 +-
 .../curl-impersonate/chrome/default.nix       |   4 +-
 .../curl-impersonate/firefox/default.nix      |   4 +-
 pkgs/tools/networking/curl/default.nix        |  16 +-
 pkgs/tools/networking/davix/default.nix       |   4 +-
 pkgs/tools/networking/dcap/default.nix        |   2 +-
 .../networking/dd-agent/datadog-agent.nix     |   2 +-
 pkgs/tools/networking/dhcpcd/default.nix      |   6 +-
 pkgs/tools/networking/dnsmasq/default.nix     |  12 +-
 pkgs/tools/networking/dnsmonster/default.nix  |   2 +-
 pkgs/tools/networking/dnstracer/default.nix   |   4 +-
 pkgs/tools/networking/dogdns/default.nix      |   6 +-
 pkgs/tools/networking/drill/default.nix       |   6 +-
 pkgs/tools/networking/edgedb/default.nix      |   2 +-
 pkgs/tools/networking/fast-ssh/default.nix    |   2 +-
 pkgs/tools/networking/fastd/default.nix       |   2 +-
 pkgs/tools/networking/findomain/default.nix   |   2 +-
 pkgs/tools/networking/ghostunnel/default.nix  |   2 +-
 pkgs/tools/networking/godspeed/default.nix    |   2 +-
 pkgs/tools/networking/gp-saml-gui/default.nix |   4 +-
 pkgs/tools/networking/gping/default.nix       |   4 +-
 pkgs/tools/networking/grpc_cli/default.nix    |   2 +-
 pkgs/tools/networking/haproxy/default.nix     |   8 +-
 pkgs/tools/networking/hping/default.nix       |   2 +-
 pkgs/tools/networking/httplz/default.nix      |   2 +-
 .../networking/ifstat-legacy/default.nix      |   2 +-
 pkgs/tools/networking/iftop/default.nix       |   2 +-
 pkgs/tools/networking/ifwifi/default.nix      |   6 +-
 pkgs/tools/networking/inetutils/default.nix   |   4 +-
 pkgs/tools/networking/innernet/default.nix    |   4 +-
 pkgs/tools/networking/iperf/3.nix             |   2 +-
 pkgs/tools/networking/isync/default.nix       |   2 +-
 pkgs/tools/networking/jwhois/default.nix      |   2 +-
 pkgs/tools/networking/lftp/default.nix        |   4 +-
 pkgs/tools/networking/libreswan/default.nix   |   2 +-
 pkgs/tools/networking/lychee/default.nix      |   2 +-
 .../networking/magic-wormhole-rs/default.nix  |   2 +-
 pkgs/tools/networking/mailutils/default.nix   |   4 +-
 pkgs/tools/networking/miniupnpc/default.nix   |   2 +-
 pkgs/tools/networking/mole/default.nix        |   2 +-
 pkgs/tools/networking/mosh/default.nix        |   2 +-
 pkgs/tools/networking/mozwire/default.nix     |   2 +-
 pkgs/tools/networking/mtr/default.nix         |   2 +-
 pkgs/tools/networking/narrowlink/default.nix  |   2 +-
 pkgs/tools/networking/nbd/default.nix         |   4 +-
 pkgs/tools/networking/ncftp/default.nix       |   2 +-
 pkgs/tools/networking/ndjbdns/default.nix     |   2 +-
 pkgs/tools/networking/netbird/default.nix     |   6 +-
 .../networking/netcat-openbsd/default.nix     |   2 +-
 pkgs/tools/networking/notemap/default.nix     |   2 +-
 pkgs/tools/networking/ntp/default.nix         |   4 +-
 pkgs/tools/networking/ockam/default.nix       |   2 +-
 pkgs/tools/networking/oha/default.nix         |   6 +-
 pkgs/tools/networking/onetun/default.nix      |   2 +-
 pkgs/tools/networking/openconnect/common.nix  |   6 +-
 .../tools/networking/openfortivpn/default.nix |   2 +-
 pkgs/tools/networking/openssh/common.nix      |   6 +-
 pkgs/tools/networking/openvpn/default.nix     |   4 +-
 pkgs/tools/networking/p2p/amule/default.nix   |   2 +-
 pkgs/tools/networking/pdnsd/default.nix       |   2 +-
 .../tools/networking/phantomsocks/default.nix |   4 +-
 pkgs/tools/networking/phodav/default.nix      |   2 +-
 .../networking/pritunl-client/default.nix     |  10 +-
 pkgs/tools/networking/quicktun/default.nix    |   2 +-
 pkgs/tools/networking/restish/default.nix     |   4 +-
 pkgs/tools/networking/rewrk/default.nix       |   2 +-
 pkgs/tools/networking/rustcat/default.nix     |   2 +-
 pkgs/tools/networking/s3rs/default.nix        |   2 +-
 .../networking/shadowsocks-rust/default.nix   |   6 +-
 pkgs/tools/networking/siege/default.nix       |   2 +-
 pkgs/tools/networking/slowlorust/default.nix  |   2 +-
 pkgs/tools/networking/sockperf/default.nix    |   2 +-
 .../tools/networking/speedtest-rs/default.nix |   4 +-
 pkgs/tools/networking/srelay/default.nix      |   2 +-
 pkgs/tools/networking/strongswan/default.nix  |  12 +-
 pkgs/tools/networking/suckit/default.nix      |   2 +-
 pkgs/tools/networking/termscp/default.nix     |   4 +-
 pkgs/tools/networking/tgt/default.nix         |   2 +-
 pkgs/tools/networking/toxvpn/default.nix      |   4 +-
 .../networking/transmission-rss/default.nix   |   2 +-
 pkgs/tools/networking/trurl/default.nix       |   2 +-
 pkgs/tools/networking/tuic/default.nix        |   2 +-
 pkgs/tools/networking/tunnelto/default.nix    |   6 +-
 pkgs/tools/networking/tuntox/default.nix      |   8 +-
 pkgs/tools/networking/uwimap/default.nix      |   8 +-
 pkgs/tools/networking/veilid/default.nix      |   2 +-
 pkgs/tools/networking/vpn-slice/default.nix   |   4 +-
 .../tools/networking/vpnc-scripts/default.nix |   4 +-
 pkgs/tools/networking/wakeonlan/default.nix   |   4 +-
 .../networking/wg-netmanager/default.nix      |   2 +-
 pkgs/tools/networking/wget/default.nix        |   8 +-
 pkgs/tools/networking/wget2/default.nix       |   2 +-
 .../networking/wireguard-tools/default.nix    |   4 +-
 .../wireguard-vanity-address/default.nix      |   2 +-
 pkgs/tools/networking/wrk2/default.nix        |   2 +-
 pkgs/tools/networking/xh/default.nix          |   2 +-
 pkgs/tools/networking/xrootd/default.nix      |  12 +-
 pkgs/tools/nix/fh/default.nix                 |   4 +-
 pkgs/tools/nix/gridlock/default.nix           |   2 +-
 pkgs/tools/nix/info/default.nix               |   4 +-
 pkgs/tools/nix/nix-init/default.nix           |   4 +-
 pkgs/tools/nix/nixci/default.nix              |   4 +-
 pkgs/tools/nix/nixdoc/default.nix             |   2 +-
 pkgs/tools/nix/npins/default.nix              |   2 +-
 pkgs/tools/nix/statix/default.nix             |   2 +-
 .../package-management/akku/overrides.nix     |   4 +-
 .../disnix/dysnomia/default.nix               |   4 +-
 .../tools/package-management/dpkg/default.nix |   8 +-
 pkgs/tools/package-management/lix/common.nix  |  20 +-
 .../mynewt-newt/default.nix                   |   2 +-
 .../package-management/nix-doc/default.nix    |   2 +-
 .../package-management/nix-du/default.nix     |   2 +-
 .../package-management/nix-index/default.nix  |   2 +-
 .../nix-template/default.nix                  |   2 +-
 pkgs/tools/package-management/nix/common.nix  |  26 +-
 pkgs/tools/package-management/nix/default.nix |   6 +-
 .../tools/package-management/nix/nix-perl.nix |   4 +-
 pkgs/tools/package-management/pkg/default.nix |   2 +-
 .../package-management/poetry/unwrapped.nix   |   8 +-
 pkgs/tools/package-management/rpm/default.nix |   4 +-
 pkgs/tools/security/acsccid/default.nix       |   2 +-
 pkgs/tools/security/adreaper/default.nix      |   2 +-
 .../security/age-plugin-ledger/default.nix    |   2 +-
 .../security/age-plugin-yubikey/default.nix   |   4 +-
 pkgs/tools/security/amber/default.nix         |   2 +-
 pkgs/tools/security/arti/default.nix          |   6 +-
 pkgs/tools/security/authoscope/default.nix    |   2 +-
 pkgs/tools/security/bettercap/default.nix     |   2 +-
 pkgs/tools/security/boofuzz/default.nix       |   2 +-
 pkgs/tools/security/browserpass/default.nix   |   2 +-
 pkgs/tools/security/bws/default.nix           |   6 +-
 pkgs/tools/security/cdk-go/default.nix        |   2 +-
 pkgs/tools/security/cdxgen/default.nix        |   2 +-
 pkgs/tools/security/certdump/default.nix      |   2 +-
 pkgs/tools/security/certinfo/default.nix      |   6 +-
 pkgs/tools/security/chainsaw/default.nix      |   2 +-
 pkgs/tools/security/cherrybomb/default.nix    |   2 +-
 pkgs/tools/security/chipsec/default.nix       |   2 +-
 pkgs/tools/security/clamav/default.nix        |   4 +-
 pkgs/tools/security/cosign/default.nix        |   4 +-
 pkgs/tools/security/echidna/default.nix       |   2 +-
 pkgs/tools/security/feroxbuster/default.nix   |   2 +-
 .../security/firefox_decrypt/default.nix      |   2 +-
 pkgs/tools/security/freeze/default.nix        |   2 +-
 pkgs/tools/security/genpass/default.nix       |   2 +-
 pkgs/tools/security/gfshare/default.nix       |   2 +-
 pkgs/tools/security/ghidra/build.nix          |   4 +-
 pkgs/tools/security/ghidra/default.nix        |   2 +-
 pkgs/tools/security/gitjacker/default.nix     |   2 +-
 pkgs/tools/security/gnupg/22.nix              |   6 +-
 pkgs/tools/security/gnupg/24.nix              |   8 +-
 pkgs/tools/security/go365/default.nix         |   2 +-
 pkgs/tools/security/gopass/default.nix        |   2 +-
 pkgs/tools/security/gpg-tui/default.nix       |   2 +-
 pkgs/tools/security/ibm-sw-tpm2/default.nix   |   2 +-
 pkgs/tools/security/jwt-cli/default.nix       |   2 +-
 pkgs/tools/security/kbs2/default.nix          |   8 +-
 pkgs/tools/security/keepwn/default.nix        |   2 +-
 pkgs/tools/security/kepler/default.nix        |   2 +-
 pkgs/tools/security/keybase/default.nix       |   2 +-
 pkgs/tools/security/keyscope/default.nix      |   2 +-
 pkgs/tools/security/kpcli/default.nix         |   2 +-
 pkgs/tools/security/kubeclarity/default.nix   |   2 +-
 pkgs/tools/security/lethe/default.nix         |   2 +-
 pkgs/tools/security/libacr38u/default.nix     |   2 +-
 pkgs/tools/security/maigret/default.nix       |   2 +-
 pkgs/tools/security/masscan/default.nix       |   2 +-
 pkgs/tools/security/mkp224o/default.nix       |   2 +-
 pkgs/tools/security/monsoon/default.nix       |   2 +-
 pkgs/tools/security/mpw/default.nix           |   2 +-
 pkgs/tools/security/nbtscanner/default.nix    |   2 +-
 pkgs/tools/security/netexec/default.nix       |   2 +-
 pkgs/tools/security/nitrokey-app2/default.nix |   2 +-
 pkgs/tools/security/oath-toolkit/default.nix  |   4 +-
 pkgs/tools/security/onioncircuits/default.nix |   2 +-
 pkgs/tools/security/onlykey/onlykey.nix       |   2 +-
 pkgs/tools/security/opensc/default.nix        |   4 +-
 pkgs/tools/security/pass/default.nix          |   8 +-
 .../pass/extensions/audit/default.nix         |   2 +-
 pkgs/tools/security/pcsc-tools/default.nix    |   4 +-
 pkgs/tools/security/pcsclite/default.nix      |   4 +-
 pkgs/tools/security/quill/default.nix         |   2 +-
 pkgs/tools/security/rblake2sum/default.nix    |   2 +-
 pkgs/tools/security/rblake3sum/default.nix    |   2 +-
 pkgs/tools/security/rbw/default.nix           |   6 +-
 pkgs/tools/security/ripasso/cursive.nix       |   2 +-
 pkgs/tools/security/rucredstash/default.nix   |   2 +-
 pkgs/tools/security/rustscan/default.nix      |   2 +-
 pkgs/tools/security/saml2aws/default.nix      |   2 +-
 pkgs/tools/security/schleuder/default.nix     |   2 +-
 pkgs/tools/security/scrypt/default.nix        |   2 +-
 .../sequoia-chameleon-gnupg/default.nix       |   2 +-
 pkgs/tools/security/sheesy-cli/default.nix    |   2 +-
 pkgs/tools/security/snowcrash/default.nix     |   2 +-
 pkgs/tools/security/softhsm/default.nix       |   2 +-
 pkgs/tools/security/solo2-cli/default.nix     |   4 +-
 pkgs/tools/security/spectre-cli/default.nix   |   2 +-
 pkgs/tools/security/ssdeep/default.nix        |   2 +-
 pkgs/tools/security/ssh-mitm/default.nix      |   2 +-
 pkgs/tools/security/sshuttle/default.nix      |   2 +-
 pkgs/tools/security/step-ca/default.nix       |   4 +-
 .../security/step-kms-plugin/default.nix      |   2 +-
 pkgs/tools/security/swtpm/default.nix         |   4 +-
 pkgs/tools/security/tcpcrypt/default.nix      |   4 +-
 pkgs/tools/security/thc-hydra/default.nix     |   2 +-
 pkgs/tools/security/tor/default.nix           |   6 +-
 pkgs/tools/security/tor/torsocks.nix          |   2 +-
 pkgs/tools/security/vault/default.nix         |   2 +-
 pkgs/tools/security/vault/vault-bin.nix       |   2 +-
 pkgs/tools/security/vaultwarden/default.nix   |   2 +-
 pkgs/tools/security/yubihsm-shell/default.nix |   8 +-
 pkgs/tools/security/yubikey-agent/default.nix |  10 +-
 pkgs/tools/security/zmap/default.nix          |   2 +-
 pkgs/tools/system/bfs/default.nix             |   2 +-
 pkgs/tools/system/btop/default.nix            |   2 +-
 pkgs/tools/system/clinfo/default.nix          |   4 +-
 pkgs/tools/system/collectd/default.nix        |   2 +-
 pkgs/tools/system/collectd/plugins.nix        |  26 +-
 pkgs/tools/system/fakeroot/default.nix        |   4 +-
 pkgs/tools/system/fio/default.nix             |   2 +-
 pkgs/tools/system/foremost/default.nix        |   2 +-
 pkgs/tools/system/gdu/default.nix             |   2 +-
 pkgs/tools/system/gotop/default.nix           |   2 +-
 pkgs/tools/system/gptfdisk/default.nix        |   4 +-
 pkgs/tools/system/gptman/default.nix          |   2 +-
 pkgs/tools/system/htop/default.nix            |  12 +-
 .../system/java-service-wrapper/default.nix   |   2 +-
 pkgs/tools/system/kanata/default.nix          |   4 +-
 pkgs/tools/system/netdata/default.nix         |  16 +-
 pkgs/tools/system/nsc/default.nix             |   2 +-
 pkgs/tools/system/plan9port/default.nix       |   4 +-
 pkgs/tools/system/rowhammer-test/default.nix  |   2 +-
 pkgs/tools/system/runit/default.nix           |   4 +-
 pkgs/tools/system/s-tui/default.nix           |   2 +-
 pkgs/tools/system/smartmontools/default.nix   |   4 +-
 pkgs/tools/system/stress-ng/default.nix       |   2 +-
 pkgs/tools/system/testdisk/default.nix        |   4 +-
 pkgs/tools/system/tree/default.nix            |   6 +-
 pkgs/tools/system/zenith/default.nix          |   4 +-
 pkgs/tools/text/amber/default.nix             |   2 +-
 pkgs/tools/text/autocorrect/default.nix       |   2 +-
 pkgs/tools/text/chars/default.nix             |   2 +-
 pkgs/tools/text/clima/default.nix             |   2 +-
 pkgs/tools/text/cmigemo/default.nix           |   4 +-
 pkgs/tools/text/coloursum/default.nix         |   2 +-
 pkgs/tools/text/dcs/default.nix               |   4 +-
 pkgs/tools/text/diffr/default.nix             |   2 +-
 pkgs/tools/text/discount/default.nix          |   2 +-
 pkgs/tools/text/fastmod/default.nix           |   2 +-
 pkgs/tools/text/fst/default.nix               |   2 +-
 pkgs/tools/text/gawk/default.nix              |  16 +-
 pkgs/tools/text/gawk/gawkextlib.nix           |   4 +-
 pkgs/tools/text/glogg/default.nix             |   4 +-
 pkgs/tools/text/gnugrep/default.nix           |   2 +-
 pkgs/tools/text/highlight/default.nix         |  10 +-
 pkgs/tools/text/html2text/default.nix         |   2 +-
 pkgs/tools/text/hyx/default.nix               |   2 +-
 pkgs/tools/text/igrep/default.nix             |   2 +-
 pkgs/tools/text/ispell/default.nix            |   2 +-
 pkgs/tools/text/jen/default.nix               |   2 +-
 pkgs/tools/text/jumanpp/default.nix           |   2 +-
 pkgs/tools/text/kakasi/default.nix            |   2 +-
 pkgs/tools/text/kdiff3/default.nix            |   2 +-
 pkgs/tools/text/languagetool-rust/default.nix |   2 +-
 pkgs/tools/text/mdbook-admonish/default.nix   |   2 +-
 pkgs/tools/text/mdbook-emojicodes/default.nix |   2 +-
 pkgs/tools/text/mdbook-epub/default.nix       |   2 +-
 pkgs/tools/text/mdbook-footnote/default.nix   |   2 +-
 pkgs/tools/text/mdbook-graphviz/default.nix   |   2 +-
 pkgs/tools/text/mdbook-katex/default.nix      |   2 +-
 .../mdbook-kroki-preprocessor/default.nix     |   2 +-
 pkgs/tools/text/mdbook-linkcheck/default.nix  |   4 +-
 pkgs/tools/text/mdbook-mermaid/default.nix    |   2 +-
 pkgs/tools/text/mdbook-pdf/default.nix        |   2 +-
 pkgs/tools/text/mdbook-plantuml/default.nix   |   2 +-
 pkgs/tools/text/mdbook-toc/default.nix        |   2 +-
 pkgs/tools/text/mdcat/default.nix             |   2 +-
 pkgs/tools/text/pinyin-tool/default.nix       |   2 +-
 pkgs/tools/text/poedit/default.nix            |   2 +-
 pkgs/tools/text/rare-regex/default.nix        |   2 +-
 pkgs/tools/text/ripgrep-all/default.nix       |   2 +-
 pkgs/tools/text/ripgrep/default.nix           |   2 +-
 pkgs/tools/text/rosie/default.nix             |   2 +-
 pkgs/tools/text/runiq/default.nix             |   2 +-
 pkgs/tools/text/ruplacer/default.nix          |   2 +-
 pkgs/tools/text/sd/default.nix                |   2 +-
 pkgs/tools/text/sgml/opensp/default.nix       |   4 +-
 pkgs/tools/text/silver-searcher/default.nix   |   2 +-
 pkgs/tools/text/tab/default.nix               |   2 +-
 pkgs/tools/text/teip/default.nix              |   2 +-
 pkgs/tools/text/termbook/default.nix          |   2 +-
 pkgs/tools/text/xml/basex/default.nix         |   2 +-
 pkgs/tools/text/xsv/default.nix               |   2 +-
 pkgs/tools/typesetting/biber-ms/default.nix   |   4 +-
 pkgs/tools/typesetting/biber/default.nix      |   4 +-
 pkgs/tools/typesetting/htmldoc/default.nix    |   2 +-
 pkgs/tools/typesetting/lowdown/default.nix    |   8 +-
 pkgs/tools/typesetting/sile/default.nix       |  10 +-
 pkgs/tools/typesetting/tectonic/default.nix   |   4 +-
 pkgs/tools/typesetting/ted/default.nix        |   2 +-
 .../typesetting/tex/blahtexml/default.nix     |   4 +-
 pkgs/tools/typesetting/tex/tetex/default.nix  |   6 +-
 .../typesetting/tex/texpresso/default.nix     |   2 +-
 pkgs/tools/video/atomicparsley/default.nix    |   2 +-
 pkgs/tools/video/bento4/default.nix           |   4 +-
 pkgs/tools/video/rtmpdump/default.nix         |   2 +-
 pkgs/tools/video/swfmill/default.nix          |   2 +-
 pkgs/tools/video/tsduck/default.nix           |   2 +-
 pkgs/tools/video/yaydl/default.nix            |   2 +-
 .../virtualization/distrobuilder/default.nix  |   2 +-
 pkgs/tools/virtualization/ovftool/default.nix |  22 +-
 pkgs/tools/wayland/wob/default.nix            |   4 +-
 pkgs/top-level/aliases.nix                    |   2 +-
 pkgs/top-level/all-packages.nix               | 216 +++++++--------
 pkgs/top-level/emscripten-packages.nix        |   6 +-
 pkgs/top-level/java-packages.nix              |   8 +-
 pkgs/top-level/lua-packages.nix               |   6 +-
 pkgs/top-level/perl-packages.nix              | 254 +++++++++---------
 pkgs/top-level/php-packages.nix               |  18 +-
 pkgs/top-level/python-packages.nix            |   4 +-
 pkgs/top-level/qt5-packages.nix               |   6 +-
 pkgs/top-level/stage.nix                      |   2 +-
 pkgs/top-level/wine-packages.nix              |  28 +-
 4283 files changed, 8137 insertions(+), 8137 deletions(-)

diff --git a/flake.nix b/flake.nix
index b09b6a5a4a0b..3e07aa1cd469 100644
--- a/flake.nix
+++ b/flake.nix
@@ -47,7 +47,7 @@
       checks = forAllSystems (system: {
         tarball = jobs.${system}.tarball;
         # Exclude power64 due to "libressl is not available on the requested hostPlatform" with hostPlatform being power64
-      } // lib.optionalAttrs (self.legacyPackages.${system}.stdenv.isLinux && !self.legacyPackages.${system}.targetPlatform.isPower64) {
+      } // lib.optionalAttrs (self.legacyPackages.${system}.stdenv.hostPlatform.isLinux && !self.legacyPackages.${system}.targetPlatform.isPower64) {
         # Test that ensures that the nixosSystem function can accept a lib argument
         # Note: prefer not to extend or modify `lib`, especially if you want to share reusable modules
         #       alternatives include: `import` a file, or put a custom library in an option or in `_module.args.<libname>`
diff --git a/lib/tests/test-with-nix.nix b/lib/tests/test-with-nix.nix
index 1316aaa49b88..a6aee9859428 100644
--- a/lib/tests/test-with-nix.nix
+++ b/lib/tests/test-with-nix.nix
@@ -33,7 +33,7 @@ pkgs.runCommand "nixpkgs-lib-tests-nix-${nix.version}" {
   nativeBuildInputs = [
     nix
     pkgs.gitMinimal
-  ] ++ lib.optional pkgs.stdenv.isLinux pkgs.inotify-tools;
+  ] ++ lib.optional pkgs.stdenv.hostPlatform.isLinux pkgs.inotify-tools;
   strictDeps = true;
 } ''
   datadir="${nix}/share"
diff --git a/maintainers/scripts/convert-to-import-cargo-lock/shell.nix b/maintainers/scripts/convert-to-import-cargo-lock/shell.nix
index fc2e2348309d..2938cf2d0c0b 100644
--- a/maintainers/scripts/convert-to-import-cargo-lock/shell.nix
+++ b/maintainers/scripts/convert-to-import-cargo-lock/shell.nix
@@ -13,5 +13,5 @@ mkShell {
       clippy
       rustfmt
     ]
-    ++ lib.optional stdenv.isDarwin pkgs.libiconv;
+    ++ lib.optional stdenv.hostPlatform.isDarwin pkgs.libiconv;
 }
diff --git a/nixos/modules/config/fonts/fontconfig.nix b/nixos/modules/config/fonts/fontconfig.nix
index 7b58d3adc22b..205fd1fa7b96 100644
--- a/nixos/modules/config/fonts/fontconfig.nix
+++ b/nixos/modules/config/fonts/fontconfig.nix
@@ -52,7 +52,7 @@ let
         ${lib.optionalString (pkgs.stdenv.hostPlatform == pkgs.stdenv.buildPlatform) ''
         <!-- Pre-generated font caches -->
         <cachedir>${cache}</cachedir>
-        ${lib.optionalString (pkgs.stdenv.isx86_64 && cfg.cache32Bit) ''
+        ${lib.optionalString (pkgs.stdenv.hostPlatform.isx86_64 && cfg.cache32Bit) ''
           <cachedir>${cache32}</cachedir>
         ''}
         ''}
diff --git a/nixos/modules/config/ldso.nix b/nixos/modules/config/ldso.nix
index 60156dd04098..f8d89db0220e 100644
--- a/nixos/modules/config/ldso.nix
+++ b/nixos/modules/config/ldso.nix
@@ -32,7 +32,7 @@ in {
 
   config = {
     assertions = [
-      { assertion = isNull config.environment.ldso32 || pkgs.stdenv.isx86_64;
+      { assertion = isNull config.environment.ldso32 || pkgs.stdenv.hostPlatform.isx86_64;
         message = "Option environment.ldso32 currently only works on x86_64.";
       }
     ];
@@ -44,7 +44,7 @@ in {
         "d /${libDir} 0755 root root - -"
         "L+ /${libDir}/${ldsoBasename} - - - - ${config.environment.ldso}"
       ]
-    ) ++ optionals pkgs.stdenv.isx86_64 (
+    ) ++ optionals pkgs.stdenv.hostPlatform.isx86_64 (
       if isNull config.environment.ldso32 then [
         "r /${libDir32}/${ldsoBasename32} - - - - -"
       ] else [
diff --git a/nixos/modules/config/pulseaudio.nix b/nixos/modules/config/pulseaudio.nix
index 6a6aeaab6541..6e6e577e6e20 100644
--- a/nixos/modules/config/pulseaudio.nix
+++ b/nixos/modules/config/pulseaudio.nix
@@ -12,7 +12,7 @@ let
 
   # Forces 32bit pulseaudio and alsa-plugins to be built/supported for apps
   # using 32bit alsa on 64bit linux.
-  enable32BitAlsaPlugins = cfg.support32Bit && pkgs.stdenv.isx86_64 && (pkgs.pkgsi686Linux.alsa-lib != null && pkgs.pkgsi686Linux.libpulseaudio != null);
+  enable32BitAlsaPlugins = cfg.support32Bit && pkgs.stdenv.hostPlatform.isx86_64 && (pkgs.pkgsi686Linux.alsa-lib != null && pkgs.pkgsi686Linux.libpulseaudio != null);
 
 
   myConfigFile =
diff --git a/nixos/modules/config/stub-ld.nix b/nixos/modules/config/stub-ld.nix
index 87b7bdf07a2d..05945852ee45 100644
--- a/nixos/modules/config/stub-ld.nix
+++ b/nixos/modules/config/stub-ld.nix
@@ -49,7 +49,7 @@ in {
 
   config = mkIf cfg.enable {
     environment.ldso = mkDefault stub-ld;
-    environment.ldso32 = mkIf pkgs.stdenv.isx86_64 (mkDefault stub-ld32);
+    environment.ldso32 = mkIf pkgs.stdenv.hostPlatform.isx86_64 (mkDefault stub-ld32);
   };
 
   meta.maintainers = with lib.maintainers; [ tejing ];
diff --git a/nixos/modules/hardware/graphics.nix b/nixos/modules/hardware/graphics.nix
index 99c122f75c2a..170ca85a99a2 100644
--- a/nixos/modules/hardware/graphics.nix
+++ b/nixos/modules/hardware/graphics.nix
@@ -100,7 +100,7 @@ in
   config = lib.mkIf cfg.enable {
     assertions = [
       {
-        assertion = cfg.enable32Bit -> pkgs.stdenv.isx86_64;
+        assertion = cfg.enable32Bit -> pkgs.stdenv.hostPlatform.isx86_64;
         message = "`hardware.graphics.enable32Bit` only makes sense on a 64-bit system.";
       }
       {
@@ -112,7 +112,7 @@ in
     systemd.tmpfiles.settings.graphics-driver = {
       "/run/opengl-driver"."L+".argument = toString driversEnv;
       "/run/opengl-driver-32" =
-        if pkgs.stdenv.isi686 then
+        if pkgs.stdenv.hostPlatform.isi686 then
           { "L+".argument = "opengl-driver"; }
         else if cfg.enable32Bit then
           { "L+".argument = toString driversEnv32; }
diff --git a/nixos/modules/profiles/all-hardware.nix b/nixos/modules/profiles/all-hardware.nix
index 249b767593f2..970b76cfbfdf 100644
--- a/nixos/modules/profiles/all-hardware.nix
+++ b/nixos/modules/profiles/all-hardware.nix
@@ -52,7 +52,7 @@ in
       # VMware support.
       "mptspi" "vmxnet3" "vsock"
     ] ++ lib.optional platform.isx86 "vmw_balloon"
-    ++ lib.optionals (pkgs.stdenv.isi686 || pkgs.stdenv.isx86_64) [
+    ++ lib.optionals (pkgs.stdenv.hostPlatform.isi686 || pkgs.stdenv.hostPlatform.isx86_64) [
       "vmw_vmci" "vmwgfx" "vmw_vsock_vmci_transport"
 
       # Hyper-V support.
@@ -68,7 +68,7 @@ in
 
       # Broadcom
       "vc4"
-    ] ++ lib.optionals pkgs.stdenv.isAarch64 [
+    ] ++ lib.optionals pkgs.stdenv.hostPlatform.isAarch64 [
       # Most of the following falls into two categories:
       #  - early KMS / early display
       #  - early storage (e.g. USB) support
diff --git a/nixos/modules/services/audio/jack.nix b/nixos/modules/services/audio/jack.nix
index a5cb0da29592..7344fdf4a218 100644
--- a/nixos/modules/services/audio/jack.nix
+++ b/nixos/modules/services/audio/jack.nix
@@ -8,7 +8,7 @@ let
   pcmPlugin = cfg.jackd.enable && cfg.alsa.enable;
   loopback = cfg.jackd.enable && cfg.loopback.enable;
 
-  enable32BitAlsaPlugins = cfg.alsa.support32Bit && pkgs.stdenv.isx86_64 && pkgs.pkgsi686Linux.alsa-lib != null;
+  enable32BitAlsaPlugins = cfg.alsa.support32Bit && pkgs.stdenv.hostPlatform.isx86_64 && pkgs.pkgsi686Linux.alsa-lib != null;
 
   umaskNeeded = versionOlder cfg.jackd.package.version "1.9.12";
   bridgeNeeded = versionAtLeast cfg.jackd.package.version "1.9.12";
diff --git a/nixos/modules/services/desktops/pipewire/pipewire.nix b/nixos/modules/services/desktops/pipewire/pipewire.nix
index bf57d1255774..532c64c0f424 100644
--- a/nixos/modules/services/desktops/pipewire/pipewire.nix
+++ b/nixos/modules/services/desktops/pipewire/pipewire.nix
@@ -19,7 +19,7 @@ let
   '';
   cfg = config.services.pipewire;
   enable32BitAlsaPlugins = cfg.alsa.support32Bit
-                           && pkgs.stdenv.isx86_64
+                           && pkgs.stdenv.hostPlatform.isx86_64
                            && pkgs.pkgsi686Linux.pipewire != null;
 
   # The package doesn't output to $out/lib/pipewire directly so that the
diff --git a/nixos/modules/services/logging/promtail.nix b/nixos/modules/services/logging/promtail.nix
index 9eccd34cef23..644a93214516 100644
--- a/nixos/modules/services/logging/promtail.nix
+++ b/nixos/modules/services/logging/promtail.nix
@@ -80,7 +80,7 @@ in {
         PrivateUsers = true;
 
         SupplementaryGroups = lib.optional (allowSystemdJournal) "systemd-journal";
-      } // (optionalAttrs (!pkgs.stdenv.isAarch64) { # FIXME: figure out why this breaks on aarch64
+      } // (optionalAttrs (!pkgs.stdenv.hostPlatform.isAarch64) { # FIXME: figure out why this breaks on aarch64
         SystemCallFilter = "@system-service";
       });
     };
diff --git a/nixos/modules/services/misc/mame.nix b/nixos/modules/services/misc/mame.nix
index 054a7803b9c4..ed98ef3ed8a6 100644
--- a/nixos/modules/services/misc/mame.nix
+++ b/nixos/modules/services/misc/mame.nix
@@ -1,7 +1,7 @@
 { config, lib, pkgs, ... }:
 let
   cfg = config.services.mame;
-  mame = "mame${lib.optionalString pkgs.stdenv.is64bit "64"}";
+  mame = "mame${lib.optionalString pkgs.stdenv.hostPlatform.is64bit "64"}";
 in
 {
   options = {
diff --git a/nixos/modules/services/misc/tabby.nix b/nixos/modules/services/misc/tabby.nix
index d63a6b24ae3d..8fabd10d90fa 100644
--- a/nixos/modules/services/misc/tabby.nix
+++ b/nixos/modules/services/misc/tabby.nix
@@ -71,7 +71,7 @@ in
 
           - nixpkgs.config.cudaSupport
           - nixpkgs.config.rocmSupport
-          - if stdenv.isDarwin && stdenv.isAarch64
+          - if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64
 
           IFF multiple acceleration methods are found to be enabled or if you
           haven't set either `cudaSupport or rocmSupport` you will have to
diff --git a/nixos/modules/services/networking/cjdns.nix b/nixos/modules/services/networking/cjdns.nix
index a7f39b379181..6aaaf6295068 100644
--- a/nixos/modules/services/networking/cjdns.nix
+++ b/nixos/modules/services/networking/cjdns.nix
@@ -274,7 +274,7 @@ in
         CapabilityBoundingSet = "CAP_NET_ADMIN CAP_NET_RAW CAP_SETUID";
         ProtectSystem = true;
         # Doesn't work on i686, causing service to fail
-        MemoryDenyWriteExecute = !pkgs.stdenv.isi686;
+        MemoryDenyWriteExecute = !pkgs.stdenv.hostPlatform.isi686;
         ProtectHome = true;
         PrivateTmp = true;
       };
diff --git a/nixos/modules/services/networking/nsd.nix b/nixos/modules/services/networking/nsd.nix
index b17416c1e3d3..fe878ddbe05f 100644
--- a/nixos/modules/services/networking/nsd.nix
+++ b/nixos/modules/services/networking/nsd.nix
@@ -603,8 +603,8 @@ in
 
     reuseport = mkOption {
       type = types.bool;
-      default = pkgs.stdenv.isLinux;
-      defaultText = literalExpression "pkgs.stdenv.isLinux";
+      default = pkgs.stdenv.hostPlatform.isLinux;
+      defaultText = literalExpression "pkgs.stdenv.hostPlatform.isLinux";
       description = ''
         Whether to enable SO_REUSEPORT on all used sockets. This lets multiple
         processes bind to the same port. This speeds up operation especially
diff --git a/nixos/modules/services/video/frigate.nix b/nixos/modules/services/video/frigate.nix
index 5c259b7fa14d..b3f38eba6642 100644
--- a/nixos/modules/services/video/frigate.nix
+++ b/nixos/modules/services/video/frigate.nix
@@ -518,7 +518,7 @@ in
         libva-utils
         procps
         radeontop
-      ] ++ lib.optionals (!stdenv.isAarch64) [
+      ] ++ lib.optionals (!stdenv.hostPlatform.isAarch64) [
         # not available on aarch64-linux
         intel-gpu-tools
       ];
diff --git a/nixos/modules/system/boot/stage-1.nix b/nixos/modules/system/boot/stage-1.nix
index 082380216d2a..b3237aa7f04e 100644
--- a/nixos/modules/system/boot/stage-1.nix
+++ b/nixos/modules/system/boot/stage-1.nix
@@ -327,7 +327,7 @@ let
 
     setHostId = optionalString (config.networking.hostId != null) ''
       hi="${config.networking.hostId}"
-      ${if pkgs.stdenv.isBigEndian then ''
+      ${if pkgs.stdenv.hostPlatform.isBigEndian then ''
         echo -ne "\x''${hi:0:2}\x''${hi:2:2}\x''${hi:4:2}\x''${hi:6:2}" > /etc/hostid
       '' else ''
         echo -ne "\x''${hi:6:2}\x''${hi:4:2}\x''${hi:2:2}\x''${hi:0:2}" > /etc/hostid
diff --git a/nixos/modules/system/boot/systemd.nix b/nixos/modules/system/boot/systemd.nix
index bb6fcc1d38ce..c7f3e5845f54 100644
--- a/nixos/modules/system/boot/systemd.nix
+++ b/nixos/modules/system/boot/systemd.nix
@@ -679,7 +679,7 @@ in
 
     # Increase numeric PID range (set directly instead of copying a one-line file from systemd)
     # https://github.com/systemd/systemd/pull/12226
-    boot.kernel.sysctl."kernel.pid_max" = mkIf pkgs.stdenv.is64bit (lib.mkDefault 4194304);
+    boot.kernel.sysctl."kernel.pid_max" = mkIf pkgs.stdenv.hostPlatform.is64bit (lib.mkDefault 4194304);
 
     services.logrotate.settings = {
       "/var/log/btmp" = mapAttrs (_: mkDefault) {
diff --git a/nixos/modules/tasks/network-interfaces.nix b/nixos/modules/tasks/network-interfaces.nix
index 7e3e24c727b2..c9ea31a85bee 100644
--- a/nixos/modules/tasks/network-interfaces.nix
+++ b/nixos/modules/tasks/network-interfaces.nix
@@ -438,7 +438,7 @@ let
 
   hostidFile = pkgs.runCommand "gen-hostid" { preferLocalBuild = true; } ''
       hi="${cfg.hostId}"
-      ${if pkgs.stdenv.isBigEndian then ''
+      ${if pkgs.stdenv.hostPlatform.isBigEndian then ''
         echo -ne "\x''${hi:0:2}\x''${hi:2:2}\x''${hi:4:2}\x''${hi:6:2}" > $out
       '' else ''
         echo -ne "\x''${hi:6:2}\x''${hi:4:2}\x''${hi:2:2}\x''${hi:0:2}" > $out
diff --git a/nixos/modules/virtualisation/docker.nix b/nixos/modules/virtualisation/docker.nix
index d6d775998119..4f38bc0b94d6 100644
--- a/nixos/modules/virtualisation/docker.nix
+++ b/nixos/modules/virtualisation/docker.nix
@@ -244,7 +244,7 @@ in
       };
 
       assertions = [
-        { assertion = cfg.enableNvidia && pkgs.stdenv.isx86_64 -> config.hardware.graphics.enable32Bit or false;
+        { assertion = cfg.enableNvidia && pkgs.stdenv.hostPlatform.isx86_64 -> config.hardware.graphics.enable32Bit or false;
           message = "Option enableNvidia on x86_64 requires 32-bit support libraries";
         }];
 
diff --git a/nixos/modules/virtualisation/xen-dom0.nix b/nixos/modules/virtualisation/xen-dom0.nix
index fa2cf2b2c6d5..2cc82c910110 100644
--- a/nixos/modules/virtualisation/xen-dom0.nix
+++ b/nixos/modules/virtualisation/xen-dom0.nix
@@ -605,7 +605,7 @@ in
   config = lib.modules.mkIf cfg.enable {
     assertions = [
       {
-        assertion = pkgs.stdenv.isx86_64;
+        assertion = pkgs.stdenv.hostPlatform.isx86_64;
         message = "Xen is currently not supported on ${pkgs.stdenv.hostPlatform.system}.";
       }
       {
diff --git a/nixos/tests/filesender.nix b/nixos/tests/filesender.nix
index 9274ddbf7e90..346e315956fb 100644
--- a/nixos/tests/filesender.nix
+++ b/nixos/tests/filesender.nix
@@ -2,7 +2,7 @@ import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "filesender";
   meta = {
     maintainers = with lib.maintainers; [ nhnn ];
-    broken = pkgs.stdenv.isAarch64; # selenium.common.exceptions.WebDriverException: Message: Unsupported platform/architecture combination: linux/aarch64
+    broken = pkgs.stdenv.hostPlatform.isAarch64; # selenium.common.exceptions.WebDriverException: Message: Unsupported platform/architecture combination: linux/aarch64
   };
 
   nodes.filesender = { ... }: let
diff --git a/nixos/tests/freetube.nix b/nixos/tests/freetube.nix
index c0beeeaae61f..4b5b2ed343f1 100644
--- a/nixos/tests/freetube.nix
+++ b/nixos/tests/freetube.nix
@@ -24,7 +24,7 @@ let
       nodes = { "${name}" = machine; };
       meta.maintainers = with pkgs.lib.maintainers; [ kirillrdy ];
       # time-out on ofborg
-      meta.broken = pkgs.stdenv.isAarch64;
+      meta.broken = pkgs.stdenv.hostPlatform.isAarch64;
       enableOCR = true;
 
       testScript = ''
diff --git a/nixos/tests/installed-tests/gdk-pixbuf.nix b/nixos/tests/installed-tests/gdk-pixbuf.nix
index 110efdbf710f..a86c20b0fbeb 100644
--- a/nixos/tests/installed-tests/gdk-pixbuf.nix
+++ b/nixos/tests/installed-tests/gdk-pixbuf.nix
@@ -6,7 +6,7 @@ makeInstalledTest {
   testConfig = {
     # Tests allocate a lot of memory trying to exploit a CVE
     # but qemu-system-i386 has a 2047M memory limit
-    virtualisation.memorySize = if pkgs.stdenv.isi686 then 2047 else 4096;
+    virtualisation.memorySize = if pkgs.stdenv.hostPlatform.isi686 then 2047 else 4096;
   };
 
   testRunnerFlags = [ "--timeout" "1800" ];
diff --git a/nixos/tests/k3s/multi-node.nix b/nixos/tests/k3s/multi-node.nix
index bc06ad858d8c..58b98b2a1853 100644
--- a/nixos/tests/k3s/multi-node.nix
+++ b/nixos/tests/k3s/multi-node.nix
@@ -189,7 +189,7 @@ import ../make-test-python.nix (
           m.start()
           m.wait_for_unit("k3s")
 
-      is_aarch64 = "${toString pkgs.stdenv.isAarch64}" == "1"
+      is_aarch64 = "${toString pkgs.stdenv.hostPlatform.isAarch64}" == "1"
 
       # wait for the agent to show up
       server.wait_until_succeeds("k3s kubectl get node agent")
diff --git a/nixos/tests/libvirtd.nix b/nixos/tests/libvirtd.nix
index 27ffaac3e62d..0b068d5a2f08 100644
--- a/nixos/tests/libvirtd.nix
+++ b/nixos/tests/libvirtd.nix
@@ -30,7 +30,7 @@ import ./make-test-python.nix ({ pkgs, ... }: {
 
   testScript = let
     nixosInstallISO = (import ../release.nix {}).iso_minimal.${pkgs.stdenv.hostPlatform.system};
-    virshShutdownCmd = if pkgs.stdenv.isx86_64 then "shutdown" else "destroy";
+    virshShutdownCmd = if pkgs.stdenv.hostPlatform.isx86_64 then "shutdown" else "destroy";
   in ''
     start_all()
 
diff --git a/nixos/tests/pulseaudio.nix b/nixos/tests/pulseaudio.nix
index dc8e33ccd559..ccc33f28bc6d 100644
--- a/nixos/tests/pulseaudio.nix
+++ b/nixos/tests/pulseaudio.nix
@@ -40,7 +40,7 @@ let
             };
 
             environment.systemPackages = [ testers.testPlay pkgs.pavucontrol ]
-              ++ lib.optional pkgs.stdenv.isx86_64 testers.testPlay32;
+              ++ lib.optional pkgs.stdenv.hostPlatform.isx86_64 testers.testPlay32;
           } // lib.optionalAttrs systemWide {
             users.users.alice.extraGroups = [ "pulse-access" ];
             systemd.services.pulseaudio.wantedBy = [ "multi-user.target" ];
@@ -54,7 +54,7 @@ let
 
           machine.send_chars("testPlay \n")
           machine.wait_for_file("/tmp/testPlay_success")
-          ${lib.optionalString pkgs.stdenv.isx86_64 ''
+          ${lib.optionalString pkgs.stdenv.hostPlatform.isx86_64 ''
             machine.send_chars("testPlay32 \n")
             machine.wait_for_file("/tmp/testPlay32_success")
           ''}
diff --git a/nixos/tests/stub-ld.nix b/nixos/tests/stub-ld.nix
index 72b0aebf3e6c..f34e082cfd22 100644
--- a/nixos/tests/stub-ld.nix
+++ b/nixos/tests/stub-ld.nix
@@ -18,7 +18,7 @@ import ./make-test-python.nix ({ lib, pkgs, ... }: {
     libDir = pkgs.stdenv.hostPlatform.libDir;
     ldsoBasename = lib.last (lib.splitString "/" pkgs.stdenv.cc.bintools.dynamicLinker);
 
-    check32 = pkgs.stdenv.isx86_64;
+    check32 = pkgs.stdenv.hostPlatform.isx86_64;
     pkgs32 = pkgs.pkgsi686Linux;
 
     libDir32 = pkgs32.stdenv.hostPlatform.libDir;
diff --git a/nixos/tests/sunshine.nix b/nixos/tests/sunshine.nix
index 7c7e86de203a..a1207bfa49f7 100644
--- a/nixos/tests/sunshine.nix
+++ b/nixos/tests/sunshine.nix
@@ -2,7 +2,7 @@ import ./make-test-python.nix ({ pkgs, lib, ... }: {
   name = "sunshine";
   meta = {
     # test is flaky on aarch64
-    broken = pkgs.stdenv.isAarch64;
+    broken = pkgs.stdenv.hostPlatform.isAarch64;
     maintainers = [ lib.maintainers.devusb ];
   };
 
diff --git a/nixos/tests/wine.nix b/nixos/tests/wine.nix
index 7cbe7ac94f1e..7fc98c23c042 100644
--- a/nixos/tests/wine.nix
+++ b/nixos/tests/wine.nix
@@ -43,7 +43,7 @@ let
 in
 listToAttrs (
   map (makeWineTest "winePackages" [ hello32 ]) variants
-  ++ optionals pkgs.stdenv.is64bit
+  ++ optionals pkgs.stdenv.hostPlatform.is64bit
     (map (makeWineTest "wineWowPackages" [ hello32 hello64 ])
          # This wayland combination times out after spending many hours.
          # https://hydra.nixos.org/job/nixos/trunk-combined/nixos.tests.wine.wineWowPackages-wayland.x86_64-linux
diff --git a/pkgs/applications/audio/ario/default.nix b/pkgs/applications/audio/ario/default.nix
index f34ff19ea04c..2231031d0481 100644
--- a/pkgs/applications/audio/ario/default.nix
+++ b/pkgs/applications/audio/ario/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
     taglib
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     for file in $out/lib/ario/plugins/*.dylib; do
       ln -s $file $out/lib/ario/plugins/$(basename $file .dylib).so
     done
diff --git a/pkgs/applications/audio/ashuffle/default.nix b/pkgs/applications/audio/ashuffle/default.nix
index 8318a4936ed9..45daafa88d79 100644
--- a/pkgs/applications/audio/ashuffle/default.nix
+++ b/pkgs/applications/audio/ashuffle/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   dontUseCmakeConfigure = true;
   nativeBuildInputs = [ cmake pkg-config meson ninja ];
   buildInputs = [ libmpdclient yaml-cpp ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.CoreFoundation ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreFoundation ];
 
   mesonFlags = [ "-Dunsupported_use_system_yamlcpp=true" ];
 
diff --git a/pkgs/applications/audio/aucatctl/default.nix b/pkgs/applications/audio/aucatctl/default.nix
index b5d52dce1856..051a1494fd9f 100644
--- a/pkgs/applications/audio/aucatctl/default.nix
+++ b/pkgs/applications/audio/aucatctl/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   buildInputs = [ sndio ]
-    ++ lib.optional (!stdenv.isDarwin && !stdenv.hostPlatform.isBSD)
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isBSD)
     libbsd;
 
   outputs = [ "out" "man" ];
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
   preBuild = ''
     makeFlagsArray+=("PREFIX=$out")
   '' + lib.optionalString
-    (!stdenv.isDarwin && !stdenv.hostPlatform.isBSD) ''
+    (!stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isBSD) ''
       makeFlagsArray+=(LDADD="-lsndio -lbsd")
 
       # Fix warning about implicit declaration of function 'strlcpy'
diff --git a/pkgs/applications/audio/audacity/default.nix b/pkgs/applications/audio/audacity/default.nix
index d7f515007d92..85ceb93f48fe 100644
--- a/pkgs/applications/audio/audacity/default.nix
+++ b/pkgs/applications/audio/audacity/default.nix
@@ -75,10 +75,10 @@ stdenv.mkDerivation rec {
     mkdir src/private
     substituteInPlace scripts/build/macOS/fix_bundle.py \
       --replace "path.startswith('/usr/lib/')" "path.startswith('${builtins.storeDir}')"
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace libraries/lib-files/FileNames.cpp \
       --replace /usr/include/linux/magic.h ${linuxHeaders}/include/linux/magic.h
-  '' + lib.optionalString (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11.0") ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11.0") ''
     sed -z -i "s/NSAppearanceName.*systemAppearance//" src/AudacityApp.mm
   '';
 
@@ -89,7 +89,7 @@ stdenv.mkDerivation rec {
     python3
     makeWrapper
     wrapGAppsHook3
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     linuxHeaders
   ];
 
@@ -125,7 +125,7 @@ stdenv.mkDerivation rec {
     portaudio
     wavpack
     wxGTK32
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib # for portaudio
     at-spi2-core
     dbus
@@ -138,7 +138,7 @@ stdenv.mkDerivation rec {
     libsepol
     libuuid
     util-linux
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     CoreAudioKit # for portaudio
     libpng
@@ -176,13 +176,13 @@ stdenv.mkDerivation rec {
   # Replace audacity's wrapper, to:
   # - put it in the right place, it shouldn't be in "$out/audacity"
   # - Add the ffmpeg dynamic dependency
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram "$out/bin/audacity" \
       "''${gappsWrapperArgs[@]}" \
       --prefix LD_LIBRARY_PATH : "$out/lib/audacity":${lib.makeLibraryPath [ ffmpeg_7 ]} \
       --suffix AUDACITY_MODULES_PATH : "$out/lib/audacity/modules" \
       --suffix AUDACITY_PATH : "$out/share/audacity"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications,bin}
     mv $out/Audacity.app $out/Applications/
     makeWrapper $out/Applications/Audacity.app/Contents/MacOS/Audacity $out/bin/audacity
diff --git a/pkgs/applications/audio/cardinal/default.nix b/pkgs/applications/audio/cardinal/default.nix
index 654d22233a3b..9c318e916a45 100644
--- a/pkgs/applications/audio/cardinal/default.nix
+++ b/pkgs/applications/audio/cardinal/default.nix
@@ -89,6 +89,6 @@ stdenv.mkDerivation rec {
     mainProgram = "Cardinal";
     platforms = lib.platforms.all;
     # never built on aarch64-darwin, x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/audio/cd-discid/default.nix b/pkgs/applications/audio/cd-discid/default.nix
index e13a64e4bd83..a30ebc8fbe39 100644
--- a/pkgs/applications/audio/cd-discid/default.nix
+++ b/pkgs/applications/audio/cd-discid/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   installFlags = [ "PREFIX=$(out)" "INSTALL=install" ];
 
   buildInputs = []
-    ++ lib.optional stdenv.isDarwin IOKit;
+    ++ lib.optional stdenv.hostPlatform.isDarwin IOKit;
 
   meta = with lib; {
     homepage = "http://linukz.org/cd-discid.shtml";
diff --git a/pkgs/applications/audio/cdparanoia/default.nix b/pkgs/applications/audio/cdparanoia/default.nix
index 4c861a177846..bdeb8eec896d 100644
--- a/pkgs/applications/audio/cdparanoia/default.nix
+++ b/pkgs/applications/audio/cdparanoia/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
     sha256 = "1pv4zrajm46za0f6lv162iqffih57a8ly4pc69f7y0gfyigb8p80";
   };
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     (fetchpatch {
       url = "https://trac.macports.org/export/70964/trunk/dports/audio/cdparanoia/files/osx_interface.patch";
       sha256 = "0hq3lvfr0h1m3p0r33jij0s1aspiqlpy533rwv19zrfllb39qvr8";
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
     autoreconfHook
   ];
 
-  propagatedBuildInputs = lib.optionals stdenv.isDarwin [
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Carbon
     IOKit
   ];
diff --git a/pkgs/applications/audio/chuck/default.nix b/pkgs/applications/audio/chuck/default.nix
index 6b975b3c6b95..db42e60730ea 100644
--- a/pkgs/applications/audio/chuck/default.nix
+++ b/pkgs/applications/audio/chuck/default.nix
@@ -12,16 +12,16 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ flex bison which ]
-    ++ lib.optionals stdenv.isDarwin [ DarwinTools xcbuild ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools xcbuild ];
 
   buildInputs = [ libsndfile ]
-    ++ lib.optional (!stdenv.isDarwin) alsa-lib
-    ++ lib.optionals stdenv.isDarwin [ AppKit Carbon CoreAudio CoreMIDI CoreServices Kernel MultitouchSupport ];
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) alsa-lib
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit Carbon CoreAudio CoreMIDI CoreServices Kernel MultitouchSupport ];
 
   patches = [ ./darwin-limits.patch ];
 
   makeFlags = [ "-C src" "DESTDIR=$(out)/bin" ];
-  buildFlags = [ (if stdenv.isDarwin then "mac" else "linux-alsa") ];
+  buildFlags = [ (if stdenv.hostPlatform.isDarwin then "mac" else "linux-alsa") ];
 
   meta = with lib; {
     description = "Programming language for real-time sound synthesis and music creation";
diff --git a/pkgs/applications/audio/cmus/default.nix b/pkgs/applications/audio/cmus/default.nix
index db32f8548517..bef7d46a53e4 100644
--- a/pkgs/applications/audio/cmus/default.nix
+++ b/pkgs/applications/audio/cmus/default.nix
@@ -1,15 +1,15 @@
 { config, lib, stdenv, fetchFromGitHub, ncurses, pkg-config
 , libiconv, CoreAudio, AudioUnit, VideoToolbox
 
-, alsaSupport ? stdenv.isLinux, alsa-lib ? null
+, alsaSupport ? stdenv.hostPlatform.isLinux, alsa-lib ? null
 # simple fallback for everyone else
-, aoSupport ? !stdenv.isLinux, libao ? null
+, aoSupport ? !stdenv.hostPlatform.isLinux, libao ? null
 , jackSupport ? false, libjack ? null
 , samplerateSupport ? jackSupport, libsamplerate ? null
 , ossSupport ? false, alsa-oss ? null
 , pulseaudioSupport ? config.pulseaudio or false, libpulseaudio ? null
 , sndioSupport ? false, sndio ? null
-, mprisSupport ? stdenv.isLinux, systemd ? null
+, mprisSupport ? stdenv.hostPlatform.isLinux, systemd ? null
 
 # TODO: add these
 #, artsSupport
@@ -103,7 +103,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ ncurses ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv CoreAudio AudioUnit VideoToolbox ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv CoreAudio AudioUnit VideoToolbox ]
     ++ lib.flatten (lib.concatMap (a: a.deps) opts);
 
   prefixKey = "prefix=";
diff --git a/pkgs/applications/audio/cmusfm/default.nix b/pkgs/applications/audio/cmusfm/default.nix
index 5d3a62bd2a56..117356bf948e 100644
--- a/pkgs/applications/audio/cmusfm/default.nix
+++ b/pkgs/applications/audio/cmusfm/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config, curl, libnotify
-, gdk-pixbuf, libnotifySupport ? stdenv.isLinux, debug ? false }:
+, gdk-pixbuf, libnotifySupport ? stdenv.hostPlatform.isLinux, debug ? false }:
 
 stdenv.mkDerivation rec {
   pname = "cmusfm";
diff --git a/pkgs/applications/audio/csound/default.nix b/pkgs/applications/audio/csound/default.nix
index ccaacf189fae..c6359103593f 100644
--- a/pkgs/applications/audio/csound/default.nix
+++ b/pkgs/applications/audio/csound/default.nix
@@ -31,21 +31,21 @@ stdenv.mkDerivation rec {
   };
 
   cmakeFlags = [ "-DBUILD_CSOUND_AC=0" ] # fails to find Score.hpp
-    ++ lib.optional stdenv.isDarwin "-DCS_FRAMEWORK_DEST=${placeholder "out"}/lib"
+    ++ lib.optional stdenv.hostPlatform.isDarwin "-DCS_FRAMEWORK_DEST=${placeholder "out"}/lib"
     # Ignore gettext in CMAKE_PREFIX_PATH on cross to prevent find_program picking up the wrong gettext
     ++ lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) "-DCMAKE_IGNORE_PATH=${lib.getBin gettext}/bin";
 
   nativeBuildInputs = [ cmake flex bison gettext ];
   buildInputs = [ libsndfile libsamplerate boost ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       Accelerate AudioUnit CoreAudio CoreMIDI portaudio
-    ] ++ lib.optionals stdenv.isLinux (builtins.filter (optional: optional != null) [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux (builtins.filter (optional: optional != null) [
       alsa-lib libpulseaudio libjack2
       liblo ladspa-sdk fluidsynth eigen
       curl tcltk fltk
     ]);
 
-  postInstall = lib.optional stdenv.isDarwin ''
+  postInstall = lib.optional stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Library/Frameworks
     ln -s $out/lib/CsoundLib64.framework $out/Library/Frameworks
   '';
diff --git a/pkgs/applications/audio/eartag/default.nix b/pkgs/applications/audio/eartag/default.nix
index 11bd27953f12..d3df0295802c 100644
--- a/pkgs/applications/audio/eartag/default.nix
+++ b/pkgs/applications/audio/eartag/default.nix
@@ -50,7 +50,7 @@ python3Packages.buildPythonApplication rec {
     gobject-introspection
     wrapGAppsHook4
     blueprint-compiler
-  ] ++ lib.optional stdenv.isDarwin gtk4; # for gtk4-update-icon-cache
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin gtk4; # for gtk4-update-icon-cache
 
   buildInputs = [
     librsvg
diff --git a/pkgs/applications/audio/easyaudiosync/default.nix b/pkgs/applications/audio/easyaudiosync/default.nix
index 0b910dfb573b..38fe6b15d937 100644
--- a/pkgs/applications/audio/easyaudiosync/default.nix
+++ b/pkgs/applications/audio/easyaudiosync/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
     cmake
     pkg-config
     wrapQtAppsHook
-  ] ++ lib.optional stdenv.isLinux copyDesktopItems;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux copyDesktopItems;
 
   buildInputs = [
     qtbase
@@ -48,11 +48,11 @@ stdenv.mkDerivation rec {
   installPhase =
     ''
       runHook preInstall
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/Applications
       mv "easyaudiosync.app" "Easy Audio Sync.app"
       cp -r "Easy Audio Sync.app" $out/Applications
-    '' + lib.optionalString stdenv.isLinux ''
+    '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       install -Dm755 easyaudiosync $out/bin/easyaudiosync
 
       for RES in 48 64 128 256; do
diff --git a/pkgs/applications/audio/eq10q/default.nix b/pkgs/applications/audio/eq10q/default.nix
index 84c8333d1857..5be159434354 100644
--- a/pkgs/applications/audio/eq10q/default.nix
+++ b/pkgs/applications/audio/eq10q/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "LV2 EQ plugins and more, with 64 bit processing";
     longDescription = ''
       Up to 10-Bands parametric equalizer with mono and stereo versions.
diff --git a/pkgs/applications/audio/espeak-ng/default.nix b/pkgs/applications/audio/espeak-ng/default.nix
index f0aebf4e4a32..7eabadec04c2 100644
--- a/pkgs/applications/audio/espeak-ng/default.nix
+++ b/pkgs/applications/audio/espeak-ng/default.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
   buildInputs = lib.optional mbrolaSupport mbrola
     ++ lib.optional pcaudiolibSupport pcaudiolib
     ++ lib.optional sonicSupport sonic
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreAudio
     AudioToolbox
     AudioUnit
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
 
   # touch ChangeLog to avoid below error on darwin:
   # Makefile.am: error: required file './ChangeLog.md' not found
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     touch ChangeLog
   '' + ''
     ./autogen.sh
@@ -79,7 +79,7 @@ stdenv.mkDerivation rec {
       --replace '../src/espeak-ng --compile' "${lib.getExe buildPackages.espeak-ng} --compile"
   '';
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --set-rpath "$(patchelf --print-rpath $out/bin/espeak-ng)" $out/bin/speak-ng
     wrapProgram $out/bin/espeak-ng \
       --set ALSA_PLUGIN_DIR ${alsa-plugins}/lib/alsa-lib
diff --git a/pkgs/applications/audio/fluidsynth/default.nix b/pkgs/applications/audio/fluidsynth/default.nix
index ff81d7689227..d02f87642f3f 100644
--- a/pkgs/applications/audio/fluidsynth/default.nix
+++ b/pkgs/applications/audio/fluidsynth/default.nix
@@ -19,8 +19,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ buildPackages.stdenv.cc pkg-config cmake ];
 
   buildInputs = [ glib libsndfile libjack2 ]
-    ++ lib.optionals stdenv.isLinux [ alsa-lib libpulseaudio ]
-    ++ lib.optionals stdenv.isDarwin [ AppKit AudioUnit CoreAudio CoreMIDI CoreServices ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib libpulseaudio ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit AudioUnit CoreAudio CoreMIDI CoreServices ];
 
   cmakeFlags = [
     "-Denable-framework=off"
diff --git a/pkgs/applications/audio/ft2-clone/default.nix b/pkgs/applications/audio/ft2-clone/default.nix
index 072c038e144a..84de0229497d 100644
--- a/pkgs/applications/audio/ft2-clone/default.nix
+++ b/pkgs/applications/audio/ft2-clone/default.nix
@@ -24,8 +24,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ SDL2 ]
-    ++ lib.optional stdenv.isLinux alsa-lib
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optional stdenv.hostPlatform.isLinux alsa-lib
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
          libiconv
          CoreAudio
          CoreMIDI
diff --git a/pkgs/applications/audio/glicol-cli/default.nix b/pkgs/applications/audio/glicol-cli/default.nix
index b549b6ac4fbe..8279bfc6b30d 100644
--- a/pkgs/applications/audio/glicol-cli/default.nix
+++ b/pkgs/applications/audio/glicol-cli/default.nix
@@ -25,9 +25,9 @@ rustPlatform.buildRustPackage rec {
     rustPlatform.bindgenHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AudioUnit
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
   ];
 
diff --git a/pkgs/applications/audio/gnome-podcasts/default.nix b/pkgs/applications/audio/gnome-podcasts/default.nix
index de7301e5020c..5625f15e3a23 100644
--- a/pkgs/applications/audio/gnome-podcasts/default.nix
+++ b/pkgs/applications/audio/gnome-podcasts/default.nix
@@ -75,6 +75,6 @@ stdenv.mkDerivation rec {
     license = lib.licenses.gpl3Plus;
     maintainers = lib.teams.gnome.members;
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/gnome-podcasts.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/gnome-podcasts.x86_64-darwin
   };
 }
diff --git a/pkgs/applications/audio/go-musicfox/default.nix b/pkgs/applications/audio/go-musicfox/default.nix
index 243fa8fa1a2a..d0da4ce048b1 100644
--- a/pkgs/applications/audio/go-musicfox/default.nix
+++ b/pkgs/applications/audio/go-musicfox/default.nix
@@ -37,7 +37,7 @@ buildGoModule rec {
 
   buildInputs = [
     flac
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
   ];
 
diff --git a/pkgs/applications/audio/grandorgue/default.nix b/pkgs/applications/audio/grandorgue/default.nix
index 4aa93b5f7090..771bef276221 100644
--- a/pkgs/applications/audio/grandorgue/default.nix
+++ b/pkgs/applications/audio/grandorgue/default.nix
@@ -41,8 +41,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config imagemagick libicns makeWrapper ];
 
   buildInputs = [ fftwFloat zlib wavpack wxGTK32 yaml-cpp ]
-    ++ lib.optionals stdenv.isLinux [ alsa-lib udev ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib udev ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ]
     ++ lib.optional jackaudioSupport libjack2;
 
   cmakeFlags = lib.optionals (!jackaudioSupport) [
@@ -52,9 +52,9 @@ stdenv.mkDerivation rec {
     "-DINSTALL_DEPEND=OFF"
   ] ++ lib.optional (!includeDemo) "-DINSTALL_DEMO=OFF";
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-DTARGET_OS_IPHONE=0";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-DTARGET_OS_IPHONE=0";
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications,bin,lib}
     mv $out/GrandOrgue.app $out/Applications/
     for lib in $out/Applications/GrandOrgue.app/Contents/Frameworks/lib*; do
diff --git a/pkgs/applications/audio/gst123/default.nix b/pkgs/applications/audio/gst123/default.nix
index 65d925342be2..d988983dcae5 100644
--- a/pkgs/applications/audio/gst123/default.nix
+++ b/pkgs/applications/audio/gst123/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation (finalAttrs: {
   enableParallelBuilding = true;
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "GStreamer based command line media player";
     homepage = "https://space.twc.de/~stefan/gst123.php";
     license = lib.licenses.lgpl2Plus;
diff --git a/pkgs/applications/audio/hivelytracker/default.nix b/pkgs/applications/audio/hivelytracker/default.nix
index 8ad62eb81a5a..49cd0a78ed75 100644
--- a/pkgs/applications/audio/hivelytracker/default.nix
+++ b/pkgs/applications/audio/hivelytracker/default.nix
@@ -66,6 +66,6 @@ stdenv.mkDerivation (finalAttrs: {
     platforms = platforms.all;
     mainProgram = "hivelytracker";
     maintainers = with maintainers; [ fgaz ];
-    broken = stdenv.isDarwin; # TODO: try to use xcbuild
+    broken = stdenv.hostPlatform.isDarwin; # TODO: try to use xcbuild
   };
 })
diff --git a/pkgs/applications/audio/jamesdsp/default.nix b/pkgs/applications/audio/jamesdsp/default.nix
index 11fb94dc0815..20c40d5d9d9b 100644
--- a/pkgs/applications/audio/jamesdsp/default.nix
+++ b/pkgs/applications/audio/jamesdsp/default.nix
@@ -80,7 +80,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   meta = {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Audio effect processor for PipeWire clients";
     mainProgram = "jamesdsp";
     homepage = "https://github.com/Audio4Linux/JDSP4Linux";
diff --git a/pkgs/applications/audio/jellycli/default.nix b/pkgs/applications/audio/jellycli/default.nix
index ddaa6721dfb7..15d69211e1ef 100644
--- a/pkgs/applications/audio/jellycli/default.nix
+++ b/pkgs/applications/audio/jellycli/default.nix
@@ -21,7 +21,7 @@ buildGoModule rec {
   buildInputs = [ alsa-lib ];
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Jellyfin terminal client";
     longDescription = ''
       Terminal music player, works with Jellyfin (>= 10.6) , Emby (>= 4.4), and
diff --git a/pkgs/applications/audio/librespot/default.nix b/pkgs/applications/audio/librespot/default.nix
index 46ece80638f6..c6c274f60da1 100644
--- a/pkgs/applications/audio/librespot/default.nix
+++ b/pkgs/applications/audio/librespot/default.nix
@@ -5,7 +5,7 @@
 , pkg-config
 , stdenv
 , openssl
-, withALSA ? stdenv.isLinux
+, withALSA ? stdenv.hostPlatform.isLinux
 , alsa-lib
 , alsa-plugins
 , withPortAudio ? false
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-tbDlWP0sUIa0W9HhdYNOvo9cGeqFemclhA7quh7f/Rw=";
 
-  nativeBuildInputs = [ pkg-config makeWrapper ] ++ lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = [ pkg-config makeWrapper ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     rustPlatform.bindgenHook
   ];
 
diff --git a/pkgs/applications/audio/listenbrainz-mpd/default.nix b/pkgs/applications/audio/listenbrainz-mpd/default.nix
index 0c7ea944a8bf..900839081e71 100644
--- a/pkgs/applications/audio/listenbrainz-mpd/default.nix
+++ b/pkgs/applications/audio/listenbrainz-mpd/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config installShellFiles asciidoctor ];
 
-  buildInputs = [ sqlite ] ++ (if stdenv.isDarwin then [
+  buildInputs = [ sqlite ] ++ (if stdenv.hostPlatform.isDarwin then [
     libiconv
     Security
     SystemConfiguration
@@ -39,7 +39,7 @@ rustPlatform.buildRustPackage rec {
 
   buildFeatures = [
     "shell_completion"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "systemd"
   ];
 
diff --git a/pkgs/applications/audio/littlegptracker/default.nix b/pkgs/applications/audio/littlegptracker/default.nix
index fad1d3f15cac..754bf7865f77 100644
--- a/pkgs/applications/audio/littlegptracker/default.nix
+++ b/pkgs/applications/audio/littlegptracker/default.nix
@@ -20,8 +20,8 @@ stdenv.mkDerivation {
   buildInputs = [
     SDL
   ]
-  ++ lib.optional stdenv.isDarwin Foundation
-  ++ lib.optional stdenv.isLinux jack2;
+  ++ lib.optional stdenv.hostPlatform.isDarwin Foundation
+  ++ lib.optional stdenv.hostPlatform.isLinux jack2;
 
   patches = [
     # Remove outdated (pre-64bit) checks that would fail on modern platforms
@@ -32,15 +32,15 @@ stdenv.mkDerivation {
   preBuild = "cd projects";
 
   makeFlags = [ "CXX=${stdenv.cc.targetPrefix}c++" ]
-    ++ lib.optionals stdenv.isLinux  [ "PLATFORM=DEB" ]
-    ++ lib.optionals stdenv.isDarwin [ "PLATFORM=OSX" ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux  [ "PLATFORM=DEB" ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "PLATFORM=OSX" ];
 
   env.NIX_CFLAGS_COMPILE = toString ([ "-fpermissive" ] ++
     lib.optional stdenv.hostPlatform.isAarch64 "-Wno-error=narrowing");
 
-  NIX_LDFLAGS = lib.optional stdenv.isDarwin "-framework Foundation";
+  NIX_LDFLAGS = lib.optional stdenv.hostPlatform.isDarwin "-framework Foundation";
 
-  installPhase = let extension = if stdenv.isDarwin then "app" else "deb-exe";
+  installPhase = let extension = if stdenv.hostPlatform.isDarwin then "app" else "deb-exe";
     in "install -Dm555 lgpt.${extension} $out/bin/lgpt";
 
   passthru.updateScript = unstableGitUpdater {
@@ -69,7 +69,7 @@ stdenv.mkDerivation {
     maintainers = with maintainers; [ fgaz ];
     platforms = platforms.all;
     # https://github.com/NixOS/nixpkgs/pull/91766#issuecomment-688751821
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "lgpt";
   };
 }
diff --git a/pkgs/applications/audio/master_me/default.nix b/pkgs/applications/audio/master_me/default.nix
index 6ed4a2efef60..4d8a35588e7e 100644
--- a/pkgs/applications/audio/master_me/default.nix
+++ b/pkgs/applications/audio/master_me/default.nix
@@ -23,8 +23,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libGL python3 ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa ]
-    ++ lib.optionals stdenv.isLinux [ libX11 libXext libXrandr ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libX11 libXext libXrandr ];
 
   enableParallelBuilding = true;
 
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     description = "automatic mastering plugin for live streaming, podcasts and internet radio";
     maintainers = with maintainers; [ magnetophon ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # error: no type or protocol named 'NSPasteboardType'
+    broken = stdenv.hostPlatform.isDarwin; # error: no type or protocol named 'NSPasteboardType'
     license = licenses.gpl3Plus;
     mainProgram = "master_me";
   };
diff --git a/pkgs/applications/audio/mellowplayer/default.nix b/pkgs/applications/audio/mellowplayer/default.nix
index 9551e0dda3b2..2bffd43b7b95 100644
--- a/pkgs/applications/audio/mellowplayer/default.nix
+++ b/pkgs/applications/audio/mellowplayer/default.nix
@@ -62,7 +62,7 @@ mkDerivation rec {
 
   meta = with lib; {
     inherit (qtbase.meta) platforms;
-    broken = stdenv.isDarwin; # test build fails, but the project is not maintained anymore
+    broken = stdenv.hostPlatform.isDarwin; # test build fails, but the project is not maintained anymore
 
     description = "Cloud music integration for your desktop";
     mainProgram = "MellowPlayer";
diff --git a/pkgs/applications/audio/midivisualizer/default.nix b/pkgs/applications/audio/midivisualizer/default.nix
index 10a2a5de6a09..54f13d3e628a 100644
--- a/pkgs/applications/audio/midivisualizer/default.nix
+++ b/pkgs/applications/audio/midivisualizer/default.nix
@@ -36,13 +36,13 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     glfw
     ffmpeg-full
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libX11
     libXrandr
     libXinerama
     libXcursor
     gtk3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Carbon
     Cocoa
@@ -52,7 +52,7 @@ stdenv.mkDerivation (finalAttrs: {
     Kernel
   ];
 
-  installPhase = if stdenv.isDarwin then ''
+  installPhase = if stdenv.hostPlatform.isDarwin then ''
     mkdir -p $out/Applications $out/bin
     cp -r MIDIVisualizer.app $out/Applications/
     ln -s ../Applications/MIDIVisualizer.app/Contents/MacOS/MIDIVisualizer $out/bin/
diff --git a/pkgs/applications/audio/miniaudicle/default.nix b/pkgs/applications/audio/miniaudicle/default.nix
index f3cd335b47be..25ab4f7c6b71 100644
--- a/pkgs/applications/audio/miniaudicle/default.nix
+++ b/pkgs/applications/audio/miniaudicle/default.nix
@@ -59,6 +59,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ fgaz ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # not attempted
+    broken = stdenv.hostPlatform.isDarwin; # not attempted
   };
 })
diff --git a/pkgs/applications/audio/minidsp/default.nix b/pkgs/applications/audio/minidsp/default.nix
index 1ba98f003481..6691d3e9507e 100644
--- a/pkgs/applications/audio/minidsp/default.nix
+++ b/pkgs/applications/audio/minidsp/default.nix
@@ -25,10 +25,10 @@ rustPlatform.buildRustPackage rec {
   cargoBuildFlags = ["-p minidsp -p minidsp-daemon"];
 
   buildInputs =
-    lib.optionals stdenv.isLinux [libusb1]
-    ++ lib.optionals stdenv.isDarwin [AppKit IOKit];
+    lib.optionals stdenv.hostPlatform.isLinux [libusb1]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [AppKit IOKit];
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [pkg-config];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [pkg-config];
 
   meta = with lib; {
     description = "Control interface for some MiniDSP products";
diff --git a/pkgs/applications/audio/mixxx/default.nix b/pkgs/applications/audio/mixxx/default.nix
index 8ef52e90f790..90bc03610318 100644
--- a/pkgs/applications/audio/mixxx/default.nix
+++ b/pkgs/applications/audio/mixxx/default.nix
@@ -132,7 +132,7 @@ mkDerivation rec {
     "-DINSTALL_USER_UDEV_RULES=OFF"
   ];
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     rules="$src/res/linux/mixxx-usb-uaccess.rules"
     if [ ! -f "$rules" ]; then
         echo "$rules is missing, must update the Nix file."
diff --git a/pkgs/applications/audio/moc/default.nix b/pkgs/applications/audio/moc/default.nix
index a7ad6590aa6b..6039654d76dc 100644
--- a/pkgs/applications/audio/moc/default.nix
+++ b/pkgs/applications/audio/moc/default.nix
@@ -3,7 +3,7 @@
 , ncurses, db , popt, libtool
 , libiconv, CoreServices
 # Sound sub-systems
-, alsaSupport ? (!stdenv.isDarwin), alsa-lib
+, alsaSupport ? (!stdenv.hostPlatform.isDarwin), alsa-lib
 , pulseSupport ? true, libpulseaudio
 , jackSupport ? true, libjack2
 , ossSupport ? true
@@ -80,7 +80,7 @@ stdenv.mkDerivation {
     # Misc
     ++ lib.optional curlSupport curl
     ++ lib.optional samplerateSupport libsamplerate
-    ++ lib.optionals stdenv.isDarwin [ libiconv CoreServices ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv CoreServices ];
 
   configureFlags = [
     # Sound sub-systems
diff --git a/pkgs/applications/audio/mopidy/mopidy.nix b/pkgs/applications/audio/mopidy/mopidy.nix
index ef604a6b4150..12eab45c52a2 100644
--- a/pkgs/applications/audio/mopidy/mopidy.nix
+++ b/pkgs/applications/audio/mopidy/mopidy.nix
@@ -33,7 +33,7 @@ pythonPackages.buildPythonApplication rec {
       requests
       setuptools
       tornado
-    ] ++ lib.optional (!stdenv.isDarwin) dbus-python
+    ] ++ lib.optional (!stdenv.hostPlatform.isDarwin) dbus-python
   );
 
   propagatedNativeBuildInputs = [
diff --git a/pkgs/applications/audio/mp3blaster/default.nix b/pkgs/applications/audio/mp3blaster/default.nix
index 1faeddb4d8e0..02711ab4e131 100644
--- a/pkgs/applications/audio/mp3blaster/default.nix
+++ b/pkgs/applications/audio/mp3blaster/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     ncurses
     libvorbis
-  ] ++ lib.optional stdenv.isDarwin SDL;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin SDL;
 
   env.NIX_CFLAGS_COMPILE = toString ([
     "-Wno-narrowing"
diff --git a/pkgs/applications/audio/mpc/default.nix b/pkgs/applications/audio/mpc/default.nix
index b0dcbfa18c59..c58c6831edf4 100644
--- a/pkgs/applications/audio/mpc/default.nix
+++ b/pkgs/applications/audio/mpc/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     libmpdclient
   ]
-  ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   nativeBuildInputs = [
     installShellFiles
diff --git a/pkgs/applications/audio/musescore/default.nix b/pkgs/applications/audio/musescore/default.nix
index f7f44b690242..6f28bf98a1b1 100644
--- a/pkgs/applications/audio/musescore/default.nix
+++ b/pkgs/applications/audio/musescore/default.nix
@@ -35,10 +35,10 @@
 }:
 
 let
-  stdenv' = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   # portaudio propagates Darwin frameworks. Rebuild it using the 11.0 stdenv
   # from Qt and the 11.0 SDK frameworks.
-  portaudio' = if stdenv.isDarwin then portaudio.override {
+  portaudio' = if stdenv.hostPlatform.isDarwin then portaudio.override {
     stdenv = stdenv';
     inherit (darwin.apple_sdk_11_0.frameworks)
       AudioUnit
@@ -94,10 +94,10 @@ in stdenv'.mkDerivation (finalAttrs: {
 
   qtWrapperArgs = [
     # MuseScore JACK backend loads libjack at runtime.
-    "--prefix ${lib.optionalString stdenv.isDarwin "DY"}LD_LIBRARY_PATH : ${lib.makeLibraryPath [ libjack2 ]}"
-  ] ++ lib.optionals (stdenv.isLinux) [
+    "--prefix ${lib.optionalString stdenv.hostPlatform.isDarwin "DY"}LD_LIBRARY_PATH : ${lib.makeLibraryPath [ libjack2 ]}"
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux) [
     "--set ALSA_PLUGIN_DIR ${alsa-plugins}/lib/alsa-lib"
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     # There are some issues with using the wayland backend, see:
     # https://musescore.org/en/node/321936
     "--set-default QT_QPA_PLATFORM xcb"
@@ -115,7 +115,7 @@ in stdenv'.mkDerivation (finalAttrs: {
     qttools
     pkg-config
     ninja
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     # Since https://github.com/musescore/MuseScore/pull/13847/commits/685ac998
     # GTK3 is needed for file dialogs. Fixes crash with No GSettings schemas error.
     wrapGAppsHook3
@@ -141,17 +141,17 @@ in stdenv'.mkDerivation (finalAttrs: {
     qtsvg
     qtscxml
     qtnetworkauth
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     qtwayland
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Cocoa
   ];
 
   postInstall = ''
     # Remove unneeded bundled libraries and headers
     rm -r $out/{include,lib}
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p "$out/Applications"
     mv "$out/mscore.app" "$out/Applications/mscore.app"
     mkdir -p $out/bin
@@ -174,8 +174,8 @@ in stdenv'.mkDerivation (finalAttrs: {
   # so we disable it and explicitly use makeQtWrapper.
   #
   # TODO: check if something like this is also needed for macOS.
-  dontWrapQtApps = stdenv.isLinux;
-  postFixup = lib.optionalString stdenv.isLinux ''
+  dontWrapQtApps = stdenv.hostPlatform.isLinux;
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     mkdir -p $out/libexec
     mv $out/bin/mscore $out/libexec
     makeQtWrapper $out/libexec/mscore $out/bin/mscore
diff --git a/pkgs/applications/audio/muso/default.nix b/pkgs/applications/audio/muso/default.nix
index ba235b5157a5..97d897d5fcb3 100644
--- a/pkgs/applications/audio/muso/default.nix
+++ b/pkgs/applications/audio/muso/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   nativeBuildInputs = [ pkg-config wrapGAppsHook3 ];
-  buildInputs = lib.optional stdenv.isDarwin CoreServices;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin CoreServices;
 
   preConfigure = ''
     substituteInPlace lib/utils.rs \
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-+UVUejKCfjC6zdW315wmu7f3A5GmnoQ3rIk8SK6LIRI=";
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Automatic music sorter (based on ID3 tags)";
     mainProgram = "muso";
     homepage = "https://github.com/quebin31/muso";
diff --git a/pkgs/applications/audio/ncspot/default.nix b/pkgs/applications/audio/ncspot/default.nix
index 4053a1a88f6b..d2d428963bad 100644
--- a/pkgs/applications/audio/ncspot/default.nix
+++ b/pkgs/applications/audio/ncspot/default.nix
@@ -35,16 +35,16 @@ rustPlatform.buildRustPackage rec {
     ++ lib.optional withClipboard python3;
 
   buildInputs = [ ncurses ]
-    ++ lib.optional stdenv.isLinux openssl
+    ++ lib.optional stdenv.hostPlatform.isLinux openssl
     ++ lib.optional withALSA alsa-lib
     ++ lib.optional withClipboard libxcb
     ++ lib.optional withCover ueberzug
     ++ lib.optional withPulseAudio libpulseaudio
     ++ lib.optional withPortAudio portaudio
     ++ lib.optional (withMPRIS || withNotify) dbus
-    ++ lib.optional stdenv.isDarwin Cocoa;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-DNCURSES_UNCTRL_H_incl";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-DNCURSES_UNCTRL_H_incl";
 
   buildNoDefaultFeatures = true;
 
diff --git a/pkgs/applications/audio/open-music-kontrollers/generic.nix b/pkgs/applications/audio/open-music-kontrollers/generic.nix
index 5c48f08dcd7c..4c4211e49f0a 100644
--- a/pkgs/applications/audio/open-music-kontrollers/generic.nix
+++ b/pkgs/applications/audio/open-music-kontrollers/generic.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation {
   ] ++ additionalBuildInputs;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = description;
     homepage = "https://open-music-kontrollers.ch/lv2/${pname}:";
     license = licenses.artistic2;
diff --git a/pkgs/applications/audio/openutau/default.nix b/pkgs/applications/audio/openutau/default.nix
index d0e840b1516f..df53f4a49644 100644
--- a/pkgs/applications/audio/openutau/default.nix
+++ b/pkgs/applications/audio/openutau/default.nix
@@ -39,7 +39,7 @@ buildDotnetModule rec {
   dotnetInstallFlags = [ "-p:PublishReadyToRun=false" ];
 
   # socket cannot bind to localhost on darwin for tests
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   # net7.0 replacement needed until upstream bumps to dotnet 7
   postPatch = ''
@@ -54,9 +54,9 @@ buildDotnetModule rec {
 
   # need to make sure proprietary worldline resampler is copied
   postInstall = let
-    runtime = if (stdenv.isLinux && stdenv.isx86_64) then "linux-x64"
-         else if (stdenv.isLinux && stdenv.isAarch64) then "linux-arm64"
-         else if stdenv.isDarwin then "osx"
+    runtime = if (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64) then "linux-x64"
+         else if (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) then "linux-arm64"
+         else if stdenv.hostPlatform.isDarwin then "osx"
          else null;
   in lib.optionalString (runtime != null) ''
     cp runtimes/${runtime}/native/libworldline${stdenv.hostPlatform.extensions.sharedLibrary} $out/lib/OpenUtau/
diff --git a/pkgs/applications/audio/opustags/default.nix b/pkgs/applications/audio/opustags/default.nix
index 9bafacc2e30e..9f306a3de1b4 100644
--- a/pkgs/applications/audio/opustags/default.nix
+++ b/pkgs/applications/audio/opustags/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
 
 
   nativeBuildInputs = [ cmake pkg-config ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   buildInputs = [ libogg ];
 
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/fmang/opustags";
     description = "Ogg Opus tags editor";
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ kmein ];
     license = licenses.bsd3;
     mainProgram = "opustags";
diff --git a/pkgs/applications/audio/parrot/default.nix b/pkgs/applications/audio/parrot/default.nix
index a0b2972ca037..d7da9213bce8 100644
--- a/pkgs/applications/audio/parrot/default.nix
+++ b/pkgs/applications/audio/parrot/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage {
   nativeBuildInputs = [ cmake makeBinaryWrapper pkg-config ];
 
   buildInputs = [ libopus openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   postInstall = ''
     wrapProgram $out/bin/parrot \
diff --git a/pkgs/applications/audio/pd-plugins/helmholtz/default.nix b/pkgs/applications/audio/pd-plugins/helmholtz/default.nix
index 50455328f3a4..a82007c375bd 100644
--- a/pkgs/applications/audio/pd-plugins/helmholtz/default.nix
+++ b/pkgs/applications/audio/pd-plugins/helmholtz/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Time domain pitch tracker for Pure Data";
     homepage = "http://www.katjaas.nl/helmholtz/helmholtz.html";
     license = lib.licenses.bsd3;
diff --git a/pkgs/applications/audio/pithos/default.nix b/pkgs/applications/audio/pithos/default.nix
index dbcc99d7de56..a9ea4096859c 100644
--- a/pkgs/applications/audio/pithos/default.nix
+++ b/pkgs/applications/audio/pithos/default.nix
@@ -30,7 +30,7 @@ pythonPackages.buildPythonApplication rec {
     (with pythonPackages; [ pygobject3 pylast ]);
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Pandora Internet Radio player for GNOME";
     mainProgram = "pithos";
     homepage = "https://pithos.github.io/";
diff --git a/pkgs/applications/audio/plugin-torture/default.nix b/pkgs/applications/audio/plugin-torture/default.nix
index b3f671adc4b2..4b5f0c4acd2f 100644
--- a/pkgs/applications/audio/plugin-torture/default.nix
+++ b/pkgs/applications/audio/plugin-torture/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     homepage = "https://github.com/cth103/plugin-torture";
     description = "Tool to test LADSPA and LV2 plugins";
     license = licenses.gpl2;
diff --git a/pkgs/applications/audio/polyphone/default.nix b/pkgs/applications/audio/polyphone/default.nix
index 11feb31ff1c9..2a38222949f6 100644
--- a/pkgs/applications/audio/polyphone/default.nix
+++ b/pkgs/applications/audio/polyphone/default.nix
@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Soundfont editor for creating musical instruments";
     mainProgram = "polyphone";
     homepage = "https://www.polyphone-soundfonts.com/";
diff --git a/pkgs/applications/audio/pt2-clone/default.nix b/pkgs/applications/audio/pt2-clone/default.nix
index d00a0e841ba6..0cbb64e6dcad 100644
--- a/pkgs/applications/audio/pt2-clone/default.nix
+++ b/pkgs/applications/audio/pt2-clone/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ SDL2 ] ++ lib.optional stdenv.isLinux alsa-lib;
+  buildInputs = [ SDL2 ] ++ lib.optional stdenv.hostPlatform.isLinux alsa-lib;
 
   postInstall = ''
     install -Dm444 "$src/release/other/Freedesktop.org Resources/ProTracker 2 clone.desktop" \
diff --git a/pkgs/applications/audio/puredata/default.nix b/pkgs/applications/audio/puredata/default.nix
index a335dabf4abc..5d1b11c4ef29 100644
--- a/pkgs/applications/audio/puredata/default.nix
+++ b/pkgs/applications/audio/puredata/default.nix
@@ -25,9 +25,9 @@ stdenv.mkDerivation rec {
   buildInputs = [
     fftw
     libjack2
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     portaudio
   ];
 
@@ -35,9 +35,9 @@ stdenv.mkDerivation rec {
     "--enable-universal"
     "--enable-fftw"
     "--enable-jack"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "--enable-alsa"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--enable-portaudio"
     "--without-local-portaudio"
     "--disable-jack-framework"
diff --git a/pkgs/applications/audio/quadrafuzz/default.nix b/pkgs/applications/audio/quadrafuzz/default.nix
index 4f0ea946832e..e2156b391007 100644
--- a/pkgs/applications/audio/quadrafuzz/default.nix
+++ b/pkgs/applications/audio/quadrafuzz/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     homepage = "https://github.com/jpcima/quadrafuzz";
     description = "Multi-band fuzz distortion plugin";
     maintainers = [ maintainers.magnetophon ];
diff --git a/pkgs/applications/audio/radiotray-ng/default.nix b/pkgs/applications/audio/radiotray-ng/default.nix
index ee994b56efb0..6577f33baba0 100644
--- a/pkgs/applications/audio/radiotray-ng/default.nix
+++ b/pkgs/applications/audio/radiotray-ng/default.nix
@@ -94,7 +94,7 @@ stdenv.mkDerivation rec {
   env.NIX_CFLAGS_COMPILE = "-Wno-error=deprecated-declarations";
 
   nativeCheckInputs = [ gtest ];
-  doCheck = !stdenv.isAarch64; # single failure that I can't explain
+  doCheck = !stdenv.hostPlatform.isAarch64; # single failure that I can't explain
 
   preFixup = ''
     gappsWrapperArgs+=(--suffix PATH : ${lib.makeBinPath [ dbus ]})
diff --git a/pkgs/applications/audio/reaper/default.nix b/pkgs/applications/audio/reaper/default.nix
index da26c1570567..ff8d32b90780 100644
--- a/pkgs/applications/audio/reaper/default.nix
+++ b/pkgs/applications/audio/reaper/default.nix
@@ -15,14 +15,14 @@
 , xdotool
 , which
 
-, jackSupport ? stdenv.isLinux
+, jackSupport ? stdenv.hostPlatform.isLinux
 , jackLibrary
-, pulseaudioSupport ? config.pulseaudio or stdenv.isLinux
+, pulseaudioSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux
 , libpulseaudio
 }:
 
 let
-  url_for_platform = version: arch: if stdenv.isDarwin
+  url_for_platform = version: arch: if stdenv.hostPlatform.isDarwin
     then "https://www.reaper.fm/files/${lib.versions.major version}.x/reaper${builtins.replaceStrings ["."] [""] version}_universal.dmg"
     else "https://www.reaper.fm/files/${lib.versions.major version}.x/reaper${builtins.replaceStrings ["."] [""] version}_linux_${arch}.tar.xz";
 in
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = url_for_platform version stdenv.hostPlatform.qemuArch;
-    hash = if stdenv.isDarwin then "sha256-dIRZCUIfqnGTxBaLzczwzD6hA/PyAxPqfa+FfCRKdu0=" else {
+    hash = if stdenv.hostPlatform.isDarwin then "sha256-dIRZCUIfqnGTxBaLzczwzD6hA/PyAxPqfa+FfCRKdu0=" else {
       x86_64-linux = "sha256-aa2KcL8yZYG+Dki7J6U473E2BQgdACAIzRLtD9zuHV0=";
       aarch64-linux = "sha256-NECEEUKtTQajl0MZK8/NsbhcuyihHOo0Q5Y5UpAAgrM=";
     }.${stdenv.hostPlatform.system};
@@ -40,24 +40,24 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     makeWrapper
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     which
     autoPatchelfHook
     xdg-utils # Required for desktop integration
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     undmg
   ];
 
-  sourceRoot = lib.optionalString stdenv.isDarwin "Reaper.app";
+  sourceRoot = lib.optionalString stdenv.hostPlatform.isDarwin "Reaper.app";
 
   buildInputs = [
     stdenv.cc.cc.lib # reaper and libSwell need libstdc++.so.6
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     gtk3
     alsa-lib
   ];
 
-  runtimeDependencies = lib.optionals stdenv.isLinux [
+  runtimeDependencies = lib.optionals stdenv.hostPlatform.isLinux [
     gtk3 # libSwell needs libgdk-3.so.0
   ]
   ++ lib.optional jackSupport jackLibrary
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
 
   dontBuild = true;
 
-  installPhase = if stdenv.isDarwin then ''
+  installPhase = if stdenv.hostPlatform.isDarwin then ''
     runHook preInstall
     mkdir -p "$out/Applications/Reaper.app"
     cp -r * "$out/Applications/Reaper.app/"
diff --git a/pkgs/applications/audio/rkrlv2/default.nix b/pkgs/applications/audio/rkrlv2/default.nix
index 19fca6af988d..fa62fcfa47ac 100644
--- a/pkgs/applications/audio/rkrlv2/default.nix
+++ b/pkgs/applications/audio/rkrlv2/default.nix
@@ -21,6 +21,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2Only;
     maintainers = [ maintainers.joelmo ];
     platforms = platforms.unix;
-    broken = stdenv.isAarch64; # g++: error: unrecognized command line option '-mfpmath=sse'
+    broken = stdenv.hostPlatform.isAarch64; # g++: error: unrecognized command line option '-mfpmath=sse'
   };
 }
diff --git a/pkgs/applications/audio/schismtracker/default.nix b/pkgs/applications/audio/schismtracker/default.nix
index bc6a406ba2f5..6147973f1493 100644
--- a/pkgs/applications/audio/schismtracker/default.nix
+++ b/pkgs/applications/audio/schismtracker/default.nix
@@ -21,18 +21,18 @@ stdenv.mkDerivation rec {
   };
 
   configureFlags = [ "--enable-dependency-tracking" ]
-    ++ lib.optional stdenv.isDarwin "--disable-sdltest";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "--disable-sdltest";
 
   nativeBuildInputs = [ autoreconfHook python3 ];
 
   buildInputs = [ SDL2 ]
-    ++ lib.optionals stdenv.isLinux [ alsa-lib libXext ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib libXext ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   enableParallelBuilding = true;
 
   # Our Darwin SDL2 doesn't have a SDL2main to link against
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure.ac \
       --replace '-lSDL2main' '-lSDL2'
   '';
diff --git a/pkgs/applications/audio/scream/default.nix b/pkgs/applications/audio/scream/default.nix
index 3c0b83d46c19..cc09b2187535 100644
--- a/pkgs/applications/audio/scream/default.nix
+++ b/pkgs/applications/audio/scream/default.nix
@@ -1,6 +1,6 @@
 { stdenv, lib, config, fetchFromGitHub, cmake, pkg-config
-, alsaSupport ? stdenv.isLinux, alsa-lib
-, pulseSupport ? config.pulseaudio or stdenv.isLinux, libpulseaudio
+, alsaSupport ? stdenv.hostPlatform.isLinux, alsa-lib
+, pulseSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux, libpulseaudio
 , jackSupport ? false, libjack2, soxr
 , pcapSupport ? false, libpcap
 }:
diff --git a/pkgs/applications/audio/sfxr/default.nix b/pkgs/applications/audio/sfxr/default.nix
index d3314facb692..03813ff35248 100644
--- a/pkgs/applications/audio/sfxr/default.nix
+++ b/pkgs/applications/audio/sfxr/default.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation (finalAttrs: {
   makeFlags = [ "DESTDIR=$(out)" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "http://www.drpetter.se/project_sfxr.html";
     description = "Videogame sound effect generator";
     mainProgram = "sfxr";
diff --git a/pkgs/applications/audio/snapcast/default.nix b/pkgs/applications/audio/snapcast/default.nix
index ff58b64cee64..821cda32e977 100644
--- a/pkgs/applications/audio/snapcast/default.nix
+++ b/pkgs/applications/audio/snapcast/default.nix
@@ -24,10 +24,10 @@ stdenv.mkDerivation rec {
     asio avahi flac libogg libvorbis libopus
     aixlog popl soxr
   ] ++ lib.optional pulseaudioSupport libpulseaudio
-  ++ lib.optional stdenv.isLinux alsa-lib
-  ++ lib.optionals stdenv.isDarwin [ IOKit AudioToolbox ];
+  ++ lib.optional stdenv.hostPlatform.isLinux alsa-lib
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit AudioToolbox ];
 
-  TARGET=lib.optionalString stdenv.isDarwin "MACOS";
+  TARGET=lib.optionalString stdenv.hostPlatform.isDarwin "MACOS";
 
   # Upstream systemd unit files are pretty awful, so we provide our own in a
   # NixOS module. It might make sense to get that upstreamed...
diff --git a/pkgs/applications/audio/snd/default.nix b/pkgs/applications/audio/snd/default.nix
index ad935b09ed16..8bb0bf1387e2 100644
--- a/pkgs/applications/audio/snd/default.nix
+++ b/pkgs/applications/audio/snd/default.nix
@@ -15,8 +15,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ fftw gsl motif ]
-    ++ lib.optionals stdenv.isLinux [ alsa-lib ]
-    ++ lib.optionals stdenv.isDarwin [ CoreServices CoreMIDI ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices CoreMIDI ]
     ++ (with xorg; [ libXext libXft libXpm libXt ]);
 
   configureFlags = [ "--with-motif" ];
diff --git a/pkgs/applications/audio/sonobus/default.nix b/pkgs/applications/audio/sonobus/default.nix
index fc0c5977360f..d8a69ecd9a0b 100644
--- a/pkgs/applications/audio/sonobus/default.nix
+++ b/pkgs/applications/audio/sonobus/default.nix
@@ -59,7 +59,7 @@ stdenv.mkDerivation (finalAttrs: {
   env.NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isLinux "-rpath ${lib.makeLibraryPath (finalAttrs.runtimeDependencies)}";
   dontPatchELF = true; # needed or nix will try to optimize the binary by removing "useless" rpath
 
-  postPatch = lib.optionalString (stdenv.isLinux) ''
+  postPatch = lib.optionalString (stdenv.hostPlatform.isLinux) ''
     # needs special setup on Linux, dunno if it can work on Darwin
     # Also, I get issues with linking without that, not sure why
     sed -i -e '/juce::juce_recommended_lto_flags/d' CMakeLists.txt
@@ -67,7 +67,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   # The program does not provide any CMake install instructions
-  installPhase = lib.optionalString (stdenv.isLinux) ''
+  installPhase = lib.optionalString (stdenv.hostPlatform.isLinux) ''
     runHook preInstall
     cd ../linux
     ./install.sh "$out"
@@ -80,7 +80,7 @@ stdenv.mkDerivation (finalAttrs: {
     license = with licenses; [ gpl3Plus ];
     maintainers = with maintainers; [ PowerUser64 ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "sonobus";
   };
 })
diff --git a/pkgs/applications/audio/sorcer/default.nix b/pkgs/applications/audio/sorcer/default.nix
index 6c28d540458f..bcca16089a27 100644
--- a/pkgs/applications/audio/sorcer/default.nix
+++ b/pkgs/applications/audio/sorcer/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     homepage = "http://openavproductions.com/sorcer/";
     description = "Wavetable LV2 plugin synth, targeted at the electronic / dubstep genre";
     license = licenses.gpl3Plus;
diff --git a/pkgs/applications/audio/soundtracker/default.nix b/pkgs/applications/audio/soundtracker/default.nix
index 02c4813e0370..36f90e67a639 100644
--- a/pkgs/applications/audio/soundtracker/default.nix
+++ b/pkgs/applications/audio/soundtracker/default.nix
@@ -59,7 +59,7 @@ stdenv.mkDerivation (finalAttrs: {
     goocanvas
     libxml2
     libsndfile
-  ] ++ lib.optional stdenv.isLinux alsa-lib;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux alsa-lib;
 
   meta = with lib; {
     description = "Music tracking tool similar in design to the DOS program FastTracker and the Amiga legend ProTracker";
diff --git a/pkgs/applications/audio/speech-denoiser/default.nix b/pkgs/applications/audio/speech-denoiser/default.nix
index 415bf352cae9..a0c3d2d25706 100644
--- a/pkgs/applications/audio/speech-denoiser/default.nix
+++ b/pkgs/applications/audio/speech-denoiser/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation  {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Speech denoise lv2 plugin based on RNNoise library";
     homepage = "https://github.com/lucianodato/speech-denoiser";
     license = licenses.lgpl3;
diff --git a/pkgs/applications/audio/spotify-player/default.nix b/pkgs/applications/audio/spotify-player/default.nix
index dcce24d173ce..a3c51cfaaba2 100644
--- a/pkgs/applications/audio/spotify-player/default.nix
+++ b/pkgs/applications/audio/spotify-player/default.nix
@@ -49,7 +49,7 @@ rustPlatform.buildRustPackage rec {
     pkg-config
     cmake
     rustPlatform.bindgenHook
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     makeBinaryWrapper
   ];
 
@@ -61,14 +61,14 @@ rustPlatform.buildRustPackage rec {
     ++ lib.optionals withSixel [ libsixel ]
     ++ lib.optionals (withAudioBackend == "alsa") [ alsa-lib ]
     ++ lib.optionals (withAudioBackend == "pulseaudio") [ libpulseaudio ]
-    ++ lib.optionals (withAudioBackend == "rodio" && stdenv.isLinux) [ alsa-lib ]
+    ++ lib.optionals (withAudioBackend == "rodio" && stdenv.hostPlatform.isLinux) [ alsa-lib ]
     ++ lib.optionals (withAudioBackend == "portaudio") [ portaudio ]
     ++ lib.optionals (withAudioBackend == "jackaudio") [ libjack2 ]
     ++ lib.optionals (withAudioBackend == "rodiojack") [ alsa-lib libjack2 ]
     ++ lib.optionals (withAudioBackend == "sdl") [ SDL2 ]
     ++ lib.optionals (withAudioBackend == "gstreamer") [ gst_all_1.gstreamer gst_all_1.gst-devtools gst_all_1.gst-plugins-base gst_all_1.gst-plugins-good ]
-    ++ lib.optionals (stdenv.isDarwin && withMediaControl) [ darwin.apple_sdk.frameworks.MediaPlayer ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && withMediaControl) [ darwin.apple_sdk.frameworks.MediaPlayer ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
       AppKit
       AudioUnit
       Cocoa
@@ -88,7 +88,7 @@ rustPlatform.buildRustPackage rec {
     ++ lib.optionals withFuzzy [ "fzf" ];
 
   # sixel-sys is dynamically linked to libsixel
-  postInstall = lib.optionals (stdenv.isDarwin && withSixel) ''
+  postInstall = lib.optionals (stdenv.hostPlatform.isDarwin && withSixel) ''
     wrapProgram $out/bin/spotify_player \
       --prefix DYLD_LIBRARY_PATH : "${lib.makeLibraryPath [libsixel]}"
   '';
diff --git a/pkgs/applications/audio/spotify-qt/default.nix b/pkgs/applications/audio/spotify-qt/default.nix
index 0fbf7c943842..cbe252bc2b94 100644
--- a/pkgs/applications/audio/spotify-qt/default.nix
+++ b/pkgs/applications/audio/spotify-qt/default.nix
@@ -27,7 +27,7 @@ mkDerivation rec {
 
    installFlags = [ "DESTDIR=$(out)" ];
 
-   postInstall = lib.optionalString stdenvNoCC.isDarwin ''
+   postInstall = lib.optionalString stdenvNoCC.hostPlatform.isDarwin ''
      mkdir -p $out/Applications
      mv $out/bin/spotify-qt.app $out/Applications
      ln $out/Applications/spotify-qt.app/Contents/MacOS/spotify-qt $out/bin/spotify-qt
diff --git a/pkgs/applications/audio/spotify/darwin.nix b/pkgs/applications/audio/spotify/darwin.nix
index 8304bdf3a15d..bc643d4f1b6e 100644
--- a/pkgs/applications/audio/spotify/darwin.nix
+++ b/pkgs/applications/audio/spotify/darwin.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation {
 
   version = "1.2.40.599.g606b7f29";
 
-  src = if stdenv.isAarch64 then (
+  src = if stdenv.hostPlatform.isAarch64 then (
     fetchurl {
       url = "https://web.archive.org/web/20240622065234/https://download.scdn.co/SpotifyARM64.dmg";
       hash = "sha256-mmjxKYmsX0rFlIU19JOfPbNgOhlcZs5slLUhDhlON1c=";
diff --git a/pkgs/applications/audio/spotify/default.nix b/pkgs/applications/audio/spotify/default.nix
index df6d762c65ef..fe49e680908f 100644
--- a/pkgs/applications/audio/spotify/default.nix
+++ b/pkgs/applications/audio/spotify/default.nix
@@ -18,6 +18,6 @@ let
     mainProgram = "spotify";
   };
 
-in if stdenv.isDarwin
+in if stdenv.hostPlatform.isDarwin
 then callPackage ./darwin.nix (extraArgs // { inherit pname meta; })
 else callPackage ./linux.nix (extraArgs // { inherit pname meta; })
diff --git a/pkgs/applications/audio/stone-phaser/default.nix b/pkgs/applications/audio/stone-phaser/default.nix
index 6bef356172cd..f581ae1b1cb6 100644
--- a/pkgs/applications/audio/stone-phaser/default.nix
+++ b/pkgs/applications/audio/stone-phaser/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   installFlags = [ "PREFIX=$(out)" ];
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     homepage = "https://github.com/jpcima/stone-phaser";
     description = "Classic analog phaser effect, made with DPF and Faust";
     maintainers = [ maintainers.magnetophon ];
diff --git a/pkgs/applications/audio/strawberry/default.nix b/pkgs/applications/audio/strawberry/default.nix
index 9179ecccef07..7fedaf3c2fd8 100644
--- a/pkgs/applications/audio/strawberry/default.nix
+++ b/pkgs/applications/audio/strawberry/default.nix
@@ -79,7 +79,7 @@ stdenv.mkDerivation rec {
     taglib
     qtbase
     qtx11extras
-  ] ++ optionals stdenv.isLinux [
+  ] ++ optionals stdenv.hostPlatform.isLinux [
     libgpod
     libpulseaudio
     libselinux
@@ -101,7 +101,7 @@ stdenv.mkDerivation rec {
     pkg-config
     qttools
     wrapQtAppsHook
-  ] ++ optionals stdenv.isLinux [
+  ] ++ optionals stdenv.hostPlatform.isLinux [
     util-linux
   ];
 
diff --git a/pkgs/applications/audio/tauon/default.nix b/pkgs/applications/audio/tauon/default.nix
index 12a62f1afc18..3ed875b668ba 100644
--- a/pkgs/applications/audio/tauon/default.nix
+++ b/pkgs/applications/audio/tauon/default.nix
@@ -112,7 +112,7 @@ stdenv.mkDerivation (finalAttrs: {
       setproctitle
     ]
     ++ lib.optional withDiscordRPC pypresence
-    ++ lib.optional stdenv.isLinux pulsectl;
+    ++ lib.optional stdenv.hostPlatform.isLinux pulsectl;
 
   makeWrapperArgs = [
     "--prefix PATH : ${lib.makeBinPath [ ffmpeg ]}"
diff --git a/pkgs/applications/audio/tenacity/default.nix b/pkgs/applications/audio/tenacity/default.nix
index 160a032fd648..0ef4ed73787b 100644
--- a/pkgs/applications/audio/tenacity/default.nix
+++ b/pkgs/applications/audio/tenacity/default.nix
@@ -97,7 +97,7 @@ stdenv.mkDerivation rec {
     makeWrapper
     pkg-config
     python3
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     linuxHeaders
   ];
 
@@ -129,7 +129,7 @@ stdenv.mkDerivation rec {
     twolame
     wxGTK32
     gtk3
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     at-spi2-core
     dbus
     libepoxy
diff --git a/pkgs/applications/audio/termusic/default.nix b/pkgs/applications/audio/termusic/default.nix
index c6048ed1e7fe..c4a42aa3837c 100644
--- a/pkgs/applications/audio/termusic/default.nix
+++ b/pkgs/applications/audio/termusic/default.nix
@@ -74,7 +74,7 @@ rustPlatform.buildRustPackage rec {
     mpv-unwrapped
     openssl
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     CoreAudio
     CoreGraphics
@@ -82,7 +82,7 @@ rustPlatform.buildRustPackage rec {
     IOKit
     MediaPlayer
     Security
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
   ];
 
diff --git a/pkgs/applications/audio/virtual-ans/default.nix b/pkgs/applications/audio/virtual-ans/default.nix
index 4bec1952e03e..22e18502866a 100644
--- a/pkgs/applications/audio/virtual-ans/default.nix
+++ b/pkgs/applications/audio/virtual-ans/default.nix
@@ -43,13 +43,13 @@ stdenv.mkDerivation rec {
     ln -s $out/${startScript} $out/bin/virtual-ans
   '';
 
-  startScript = if stdenv.isx86_32 then "START_LINUX_X86"
-    else        if stdenv.isx86_64 then "START_LINUX_X86_64"
-    #else        if stdenv.isDarwin then "START_MACOS.app" # disabled because I cannot test on Darwin
+  startScript = if stdenv.hostPlatform.isx86_32 then "START_LINUX_X86"
+    else        if stdenv.hostPlatform.isx86_64 then "START_LINUX_X86_64"
+    #else        if stdenv.hostPlatform.isDarwin then "START_MACOS.app" # disabled because I cannot test on Darwin
     else abort "Unsupported platform: ${stdenv.hostPlatform.linuxArch}.";
 
-  linuxExecutable = if stdenv.isx86_32 then "pixilang_linux_x86"
-    else            if stdenv.isx86_64 then "pixilang_linux_x86_64"
+  linuxExecutable = if stdenv.hostPlatform.isx86_32 then "pixilang_linux_x86"
+    else            if stdenv.hostPlatform.isx86_64 then "pixilang_linux_x86_64"
     else                                    "";
 
   meta = with lib; {
diff --git a/pkgs/applications/audio/vorbis-tools/default.nix b/pkgs/applications/audio/vorbis-tools/default.nix
index 877f670d6861..4325d934e84b 100644
--- a/pkgs/applications/audio/vorbis-tools/default.nix
+++ b/pkgs/applications/audio/vorbis-tools/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ libogg libvorbis libao curl speex flac ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   meta = with lib; {
     description = "Extra tools for Ogg-Vorbis audio codec";
diff --git a/pkgs/applications/audio/wavegain/default.nix b/pkgs/applications/audio/wavegain/default.nix
index 93dd7bf6fb23..49c66b07a91c 100644
--- a/pkgs/applications/audio/wavegain/default.nix
+++ b/pkgs/applications/audio/wavegain/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "ReplayGain for wave files";
     homepage = "https://github.com/MestreLion/wavegain";
     license = lib.licenses.lgpl21;
diff --git a/pkgs/applications/audio/x42-avldrums/default.nix b/pkgs/applications/audio/x42-avldrums/default.nix
index 3234a719e3c0..4a802a324e8a 100644
--- a/pkgs/applications/audio/x42-avldrums/default.nix
+++ b/pkgs/applications/audio/x42-avldrums/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Drum sample player LV2 plugin dedicated to Glen MacArthur's AVLdrums";
     homepage = "https://x42-plugins.com/x42/x42-avldrums";
     maintainers = with maintainers; [ magnetophon orivej ];
diff --git a/pkgs/applications/audio/x42-gmsynth/default.nix b/pkgs/applications/audio/x42-gmsynth/default.nix
index 8f83263d0a00..1d31211ec80d 100644
--- a/pkgs/applications/audio/x42-gmsynth/default.nix
+++ b/pkgs/applications/audio/x42-gmsynth/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Chris Colins' General User soundfont player LV2 plugin";
     homepage = "https://x42-plugins.com/x42/x42-gmsynth";
     maintainers = with maintainers; [ orivej ];
diff --git a/pkgs/applications/audio/xmp/default.nix b/pkgs/applications/audio/xmp/default.nix
index efd5fb9caa60..8abce73aff1f 100644
--- a/pkgs/applications/audio/xmp/default.nix
+++ b/pkgs/applications/audio/xmp/default.nix
@@ -13,8 +13,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ libxmp ]
-    ++ lib.optionals stdenv.isLinux [ alsa-lib ]
-    ++ lib.optionals stdenv.isDarwin [ AudioUnit CoreAudio ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AudioUnit CoreAudio ];
 
   meta = with lib; {
     description = "Extended module player";
diff --git a/pkgs/applications/audio/youtube-music/default.nix b/pkgs/applications/audio/youtube-music/default.nix
index 59d33a00511b..046203416a03 100644
--- a/pkgs/applications/audio/youtube-music/default.nix
+++ b/pkgs/applications/audio/youtube-music/default.nix
@@ -27,30 +27,30 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   nativeBuildInputs = [ makeWrapper python3 nodejs pnpm.configHook ]
-    ++ lib.optionals (!stdenv.isDarwin) [ copyDesktopItems ];
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ copyDesktopItems ];
 
 
   ELECTRON_SKIP_BINARY_DOWNLOAD = 1;
 
-  postBuild = lib.optionalString stdenv.isDarwin ''
+  postBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     cp -R ${electron.dist}/Electron.app Electron.app
     chmod -R u+w Electron.app
   '' + ''
     pnpm build
     ./node_modules/.bin/electron-builder \
       --dir \
-      -c.electronDist=${if stdenv.isDarwin then "." else electron.dist} \
+      -c.electronDist=${if stdenv.hostPlatform.isDarwin then "." else electron.dist} \
       -c.electronVersion=${electron.version}
   '';
 
   installPhase = ''
     runHook preInstall
 
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications,bin}
     mv pack/mac*/YouTube\ Music.app $out/Applications
     makeWrapper $out/Applications/YouTube\ Music.app/Contents/MacOS/YouTube\ Music $out/bin/youtube-music
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mkdir -p "$out/share/lib/youtube-music"
     cp -r pack/*-unpacked/{locales,resources{,.pak}} "$out/share/lib/youtube-music"
 
@@ -64,7 +64,7 @@ stdenv.mkDerivation (finalAttrs: {
     runHook postInstall
   '';
 
-  postFixup = lib.optionalString (!stdenv.isDarwin) ''
+  postFixup = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     makeWrapper ${electron}/bin/electron $out/bin/youtube-music \
       --add-flags $out/share/lib/youtube-music/resources/app.asar \
       --add-flags "\''${NIXOS_OZONE_WL:+\''${WAYLAND_DISPLAY:+--ozone-platform-hint=auto --enable-features=WaylandWindowDecorations}}" \
diff --git a/pkgs/applications/audio/zrythm/default.nix b/pkgs/applications/audio/zrythm/default.nix
index e99ef4225cc8..28315b0a3701 100644
--- a/pkgs/applications/audio/zrythm/default.nix
+++ b/pkgs/applications/audio/zrythm/default.nix
@@ -206,7 +206,7 @@ stdenv.mkDerivation (finalAttrs: {
     description = "Automated and intuitive digital audio workstation";
     maintainers = with maintainers; [ tshaynik magnetophon yuu astavie PowerUser64 ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     license = licenses.agpl3Plus;
   };
 })
diff --git a/pkgs/applications/audio/zynaddsubfx/default.nix b/pkgs/applications/audio/zynaddsubfx/default.nix
index 6f5512d4fa33..59f0310263a4 100644
--- a/pkgs/applications/audio/zynaddsubfx/default.nix
+++ b/pkgs/applications/audio/zynaddsubfx/default.nix
@@ -16,7 +16,7 @@
 , zlib
 
   # Optional dependencies
-, alsaSupport ? stdenv.isLinux
+, alsaSupport ? stdenv.hostPlatform.isLinux
 , alsa-lib
 , dssiSupport ? false
 , dssi
@@ -28,7 +28,7 @@
 , ossSupport ? true
 , portaudioSupport ? true
 , portaudio
-, sndioSupport ? stdenv.isOpenBSD
+, sndioSupport ? stdenv.hostPlatform.isOpenBSD
 , sndio
 
   # Optional GUI dependencies
@@ -122,7 +122,7 @@ in stdenv.mkDerivation rec {
       lib.optionals lashSupport [ "PortChecker" ]
 
       # Tests fail on aarch64
-      ++ lib.optionals stdenv.isAarch64 [ "MessageTest" "UnisonTest" ];
+      ++ lib.optionals stdenv.hostPlatform.isAarch64 [ "MessageTest" "UnisonTest" ];
   in ''
     runHook preCheck
     ctest --output-on-failure -E '^${lib.concatStringsSep "|" disabledTests}$'
@@ -168,6 +168,6 @@ in stdenv.mkDerivation rec {
     # - ZynAddSubFX LV2 & VST plugin fail to compile (not setup to use ObjC version of pugl)
     # - TTL generation crashes (`pointer being freed was not allocated`) for all VST plugins using AbstractFX
     # - Zest UI fails to start on pulg_setup: Could not open display, aborting.
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/backup/vorta/default.nix b/pkgs/applications/backup/vorta/default.nix
index b620459f3c73..8bc6e719718a 100644
--- a/pkgs/applications/backup/vorta/default.nix
+++ b/pkgs/applications/backup/vorta/default.nix
@@ -26,7 +26,7 @@ python3Packages.buildPythonApplication rec {
     wrapQtAppsHook
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
   ];
 
diff --git a/pkgs/applications/blockchains/alfis/default.nix b/pkgs/applications/blockchains/alfis/default.nix
index 776aa155a2fe..ad40bbef75c9 100644
--- a/pkgs/applications/blockchains/alfis/default.nix
+++ b/pkgs/applications/blockchains/alfis/default.nix
@@ -38,9 +38,9 @@ rustPlatform.buildRustPackage rec {
     makeWrapper
   ];
   buildInputs =
-    lib.optional stdenv.isDarwin Security
-    ++ lib.optional (withGui && stdenv.isLinux) webkitgtk
-    ++ lib.optionals (withGui && stdenv.isDarwin) [
+    lib.optional stdenv.hostPlatform.isDarwin Security
+    ++ lib.optional (withGui && stdenv.hostPlatform.isLinux) webkitgtk
+    ++ lib.optionals (withGui && stdenv.hostPlatform.isDarwin) [
       Cocoa
       WebKit
     ];
@@ -54,7 +54,7 @@ rustPlatform.buildRustPackage rec {
     "--skip=dns::client::tests::test_udp_client"
   ];
 
-  postInstall = lib.optionalString (withGui && stdenv.isLinux) ''
+  postInstall = lib.optionalString (withGui && stdenv.hostPlatform.isLinux) ''
     wrapProgram $out/bin/alfis \
       --prefix PATH : ${lib.makeBinPath [ zenity ]}
   '';
@@ -66,6 +66,6 @@ rustPlatform.buildRustPackage rec {
     maintainers = with lib.maintainers; [ misuzu ];
     platforms = lib.platforms.unix;
     mainProgram = "alfis";
-    broken = withGui && stdenv.isDarwin;
+    broken = withGui && stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/blockchains/besu/default.nix b/pkgs/applications/blockchains/besu/default.nix
index ef985a2806b7..3c48f930a625 100644
--- a/pkgs/applications/blockchains/besu/default.nix
+++ b/pkgs/applications/blockchains/besu/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation (finalAttrs: rec {
     sha256 = "sha256-CC24z0+2dSeqDddX5dJUs7SX9QJ8Iyh/nAp0pqdDvwg=";
   };
 
-  buildInputs = lib.optionals stdenv.isLinux [ jemalloc ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ jemalloc ];
   nativeBuildInputs = [ makeWrapper ];
 
   installPhase = ''
@@ -19,7 +19,7 @@ stdenv.mkDerivation (finalAttrs: rec {
     cp -r lib $out/
     wrapProgram $out/bin/${pname} \
       --set JAVA_HOME "${jre}" \
-      --suffix ${if stdenv.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH"} : ${lib.makeLibraryPath buildInputs}
+      --suffix ${if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH"} : ${lib.makeLibraryPath buildInputs}
   '';
 
   passthru.tests = {
diff --git a/pkgs/applications/blockchains/bitcoin-abc/default.nix b/pkgs/applications/blockchains/bitcoin-abc/default.nix
index 8ead5982b855..75c782a7f45e 100644
--- a/pkgs/applications/blockchains/bitcoin-abc/default.nix
+++ b/pkgs/applications/blockchains/bitcoin-abc/default.nix
@@ -81,7 +81,7 @@ mkDerivation rec {
     homepage = "https://bitcoinabc.org/";
     maintainers = with maintainers; [ lassulus ];
     license = licenses.mit;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     platforms = platforms.unix;
     mainProgram = "bitcoin-cli";
   };
diff --git a/pkgs/applications/blockchains/bitcoin-knots/default.nix b/pkgs/applications/blockchains/bitcoin-knots/default.nix
index c6838e0a0f65..5c41ba65a695 100644
--- a/pkgs/applications/blockchains/bitcoin-knots/default.nix
+++ b/pkgs/applications/blockchains/bitcoin-knots/default.nix
@@ -42,14 +42,14 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs =
     [ autoreconfHook pkg-config ]
-    ++ lib.optionals stdenv.isLinux [ util-linux ]
-    ++ lib.optionals stdenv.isDarwin [ hexdump ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ autoSignDarwinBinariesHook ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ util-linux ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ hexdump ]
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ autoSignDarwinBinariesHook ]
     ++ lib.optionals withGui [ wrapQtAppsHook ];
 
   buildInputs = [ boost libevent miniupnpc zeromq zlib ]
     ++ lib.optionals withWallet [ sqlite ]
-    ++ lib.optionals (withWallet && !stdenv.isDarwin) [ db48 ]
+    ++ lib.optionals (withWallet && !stdenv.hostPlatform.isDarwin) [ db48 ]
     ++ lib.optionals withGui [ qrencode qtbase qttools ];
 
   configureFlags = [
diff --git a/pkgs/applications/blockchains/bitcoin/default.nix b/pkgs/applications/blockchains/bitcoin/default.nix
index 960ccf418306..e3eb1cf3bc31 100644
--- a/pkgs/applications/blockchains/bitcoin/default.nix
+++ b/pkgs/applications/blockchains/bitcoin/default.nix
@@ -54,15 +54,15 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs =
     [ autoreconfHook pkg-config installShellFiles ]
-    ++ lib.optionals stdenv.isLinux [ util-linux ]
-    ++ lib.optionals stdenv.isDarwin [ hexdump ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ autoSignDarwinBinariesHook ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ util-linux ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ hexdump ]
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ autoSignDarwinBinariesHook ]
     ++ lib.optionals withGui [ wrapQtAppsHook ];
 
   buildInputs = [ boost libevent miniupnpc zeromq zlib ]
     ++ lib.optionals withWallet [ sqlite ]
     # building with db48 (for legacy descriptor wallet support) is broken on Darwin
-    ++ lib.optionals (withWallet && !stdenv.isDarwin) [ db48 ]
+    ++ lib.optionals (withWallet && !stdenv.hostPlatform.isDarwin) [ db48 ]
     ++ lib.optionals withGui [ qrencode qtbase qttools ];
 
   postInstall = ''
@@ -83,7 +83,7 @@ stdenv.mkDerivation rec {
     install -Dm644 share/pixmaps/bitcoin256.png $out/share/pixmaps/bitcoin.png
   '';
 
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export MACOSX_DEPLOYMENT_TARGET=10.13
   '';
 
diff --git a/pkgs/applications/blockchains/clightning/default.nix b/pkgs/applications/blockchains/clightning/default.nix
index ff049b69d7bc..9f84685e8c10 100644
--- a/pkgs/applications/blockchains/clightning/default.nix
+++ b/pkgs/applications/blockchains/clightning/default.nix
@@ -35,13 +35,13 @@ stdenv.mkDerivation rec {
   # as libwally-core detects the host as darwin and tries to add the -static
   # option to libtool, also we have to add the modified gsed package.
   nativeBuildInputs = [ autoconf autogen automake gettext libtool lowdown protobuf py3 unzip which ]
-    ++ lib.optionals stdenv.isDarwin [ cctools darwin.autoSignDarwinBinariesHook ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools darwin.autoSignDarwinBinariesHook ];
 
   buildInputs = [ gmp libsodium sqlite zlib jq ];
 
   # this causes some python trouble on a darwin host so we skip this step.
   # also we have to tell libwally-core to use sed instead of gsed.
-  postPatch = if !stdenv.isDarwin then ''
+  postPatch = if !stdenv.hostPlatform.isDarwin then ''
     patchShebangs \
       tools/generate-wire.py \
       tools/update-mocks.sh \
@@ -62,7 +62,7 @@ stdenv.mkDerivation rec {
   # workaround for build issue, happens only x86_64-darwin, not aarch64-darwin
   # ccan/ccan/fdpass/fdpass.c:16:8: error: variable length array folded to constant array as an extension [-Werror,-Wgnu-folding-constant]
   #                 char buf[CMSG_SPACE(sizeof(fd))];
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) "-Wno-error=gnu-folding-constant";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) "-Wno-error=gnu-folding-constant";
 
   # The `clnrest` plugin requires a Python environment to run
   postInstall = ''
diff --git a/pkgs/applications/blockchains/electrs/default.nix b/pkgs/applications/blockchains/electrs/default.nix
index f89b34097794..a31982666ab0 100644
--- a/pkgs/applications/blockchains/electrs/default.nix
+++ b/pkgs/applications/blockchains/electrs/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
   ROCKSDB_INCLUDE_DIR = "${rocksdb}/include";
   ROCKSDB_LIB_DIR = "${rocksdb}/lib";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   passthru.updateScript = ./update.sh;
 
diff --git a/pkgs/applications/blockchains/elements/default.nix b/pkgs/applications/blockchains/elements/default.nix
index 90bc9195f9b5..01abe7c2974e 100644
--- a/pkgs/applications/blockchains/elements/default.nix
+++ b/pkgs/applications/blockchains/elements/default.nix
@@ -44,9 +44,9 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs =
     [ autoreconfHook pkg-config ]
-    ++ lib.optionals stdenv.isLinux [ util-linux ]
-    ++ lib.optionals stdenv.isDarwin [ hexdump ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ autoSignDarwinBinariesHook ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ util-linux ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ hexdump ]
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ autoSignDarwinBinariesHook ]
     ++ lib.optionals withGui [ wrapQtAppsHook ];
 
   buildInputs = [ boost libevent miniupnpc zeromq zlib ]
@@ -68,7 +68,7 @@ stdenv.mkDerivation rec {
 
   # fix "Killed: 9  test/test_bitcoin"
   # https://github.com/NixOS/nixpkgs/issues/179474
-  hardeningDisable = lib.optionals (stdenv.isAarch64 && stdenv.isDarwin) [ "fortify" "stackprotector" ];
+  hardeningDisable = lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin) [ "fortify" "stackprotector" ];
 
   nativeCheckInputs = [ python3 ];
 
diff --git a/pkgs/applications/blockchains/groestlcoin/default.nix b/pkgs/applications/blockchains/groestlcoin/default.nix
index e3acd14a5a9e..18861f021431 100644
--- a/pkgs/applications/blockchains/groestlcoin/default.nix
+++ b/pkgs/applications/blockchains/groestlcoin/default.nix
@@ -51,9 +51,9 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ autoreconfHook pkg-config installShellFiles ]
-    ++ lib.optionals stdenv.isLinux [ util-linux ]
-    ++ lib.optionals stdenv.isDarwin [ hexdump ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ autoSignDarwinBinariesHook ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ util-linux ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ hexdump ]
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ autoSignDarwinBinariesHook ]
     ++ lib.optionals withGui [ wrapQtAppsHook ];
 
   buildInputs = [ boost libevent miniupnpc zeromq zlib ]
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
     install -Dm644 share/pixmaps/groestlcoin256.png $out/share/pixmaps/groestlcoin.png
   '';
 
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export MACOSX_DEPLOYMENT_TARGET=10.13
   '';
 
diff --git a/pkgs/applications/blockchains/haven-cli/default.nix b/pkgs/applications/blockchains/haven-cli/default.nix
index 2147f7cfc7de..e433aa562cf6 100644
--- a/pkgs/applications/blockchains/haven-cli/default.nix
+++ b/pkgs/applications/blockchains/haven-cli/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
     zeromq pcsclite readline
     libsodium hidapi randomx rapidjson
     protobuf readline easyloggingpp
-  ] ++ lib.optionals stdenv.isDarwin [ IOKit CoreData PCSC ]
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit CoreData PCSC ]
     ++ lib.optionals trezorSupport [ libusb1 protobuf python3 ];
 
   cmakeFlags = [
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
     "-DReadline_ROOT_DIR=${readline.dev}"
     "-DReadline_INCLUDE_DIR=${readline.dev}/include/readline"
     "-DRandomX_ROOT_DIR=${randomx}"
-  ] ++ lib.optional stdenv.isDarwin "-DBoost_USE_MULTITHREADED=OFF"
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "-DBoost_USE_MULTITHREADED=OFF"
     ++ lib.optional (!trezorSupport) "-DUSE_DEVICE_TREZOR=OFF";
 
   outputs = [ "out" "source" ];
diff --git a/pkgs/applications/blockchains/lighthouse/default.nix b/pkgs/applications/blockchains/lighthouse/default.nix
index 83dd93effb15..4d1a81d5da1a 100644
--- a/pkgs/applications/blockchains/lighthouse/default.nix
+++ b/pkgs/applications/blockchains/lighthouse/default.nix
@@ -65,7 +65,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     rust-jemalloc-sys
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
     Security
     SystemConfiguration
@@ -121,7 +121,7 @@ rustPlatform.buildRustPackage rec {
     "--skip persist::test_persist_caches"
     "--skip service::tests::tests::test_dht_persistence"
     "--skip time::test::test_reinsertion_updates_timeout"
-  ] ++ lib.optionals (stdenv.isAarch64 && stdenv.isDarwin) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin) [
     "--skip subnet_service::tests::attestation_service::test_subscribe_same_subnet_several_slots_apart"
     "--skip subnet_service::tests::sync_committee_service::same_subscription_with_lower_until_epoch"
     "--skip subnet_service::tests::sync_committee_service::subscribe_and_unsubscribe"
diff --git a/pkgs/applications/blockchains/litecoin/default.nix b/pkgs/applications/blockchains/litecoin/default.nix
index 8a3c6a2657aa..0f923fb8f6b8 100644
--- a/pkgs/applications/blockchains/litecoin/default.nix
+++ b/pkgs/applications/blockchains/litecoin/default.nix
@@ -46,7 +46,7 @@ mkDerivation rec {
   nativeBuildInputs = [ pkg-config autoreconfHook ];
   buildInputs = [ openssl db48 boost zlib zeromq fmt
                   miniupnpc glib protobuf util-linux libevent ]
-                  ++ lib.optionals stdenv.isDarwin [ AppKit ]
+                  ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ]
                   ++ lib.optionals withGui [ qtbase qttools qrencode ];
 
   configureFlags = [ "--with-boost-libdir=${boost.out}/lib" ]
@@ -62,7 +62,7 @@ mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
     description = "Lite version of Bitcoin using scrypt as a proof-of-work algorithm";
     longDescription= ''
       Litecoin is a peer-to-peer Internet currency that enables instant payments
diff --git a/pkgs/applications/blockchains/miniscript/default.nix b/pkgs/applications/blockchains/miniscript/default.nix
index 8a842d507b0c..0c3ad55ab440 100644
--- a/pkgs/applications/blockchains/miniscript/default.nix
+++ b/pkgs/applications/blockchains/miniscript/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-qkYDzsl2Y4WEDDXs9cE/jIXm01jclkYUQbDGe1S0wYs=";
   };
 
-    postPatch = lib.optionalString stdenv.isDarwin ''
+    postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Replace hardcoded g++ with c++ so clang can be used
     # on darwin
     substituteInPlace Makefile \
diff --git a/pkgs/applications/blockchains/monero-cli/default.nix b/pkgs/applications/blockchains/monero-cli/default.nix
index 7cb476ce4edf..7e87695e78c8 100644
--- a/pkgs/applications/blockchains/monero-cli/default.nix
+++ b/pkgs/applications/blockchains/monero-cli/default.nix
@@ -82,7 +82,7 @@ stdenv.mkDerivation rec {
       unbound
       zeromq
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       IOKit
       CoreData
     ]
@@ -92,7 +92,7 @@ stdenv.mkDerivation rec {
       libusb1
       protobuf_21
     ]
-    ++ lib.optionals (trezorSupport && stdenv.isLinux) [
+    ++ lib.optionals (trezorSupport && stdenv.hostPlatform.isLinux) [
       udev
     ];
 
@@ -104,7 +104,7 @@ stdenv.mkDerivation rec {
       "-DBUILD_GUI_DEPS=ON"
       "-DReadline_ROOT_DIR=${readline.dev}"
     ]
-    ++ lib.optional stdenv.isDarwin "-DBoost_USE_MULTITHREADED=OFF"
+    ++ lib.optional stdenv.hostPlatform.isDarwin "-DBoost_USE_MULTITHREADED=OFF"
     ++ lib.optional trezorSupport [
       "-DUSE_DEVICE_TREZOR=ON"
       # fix build on recent gcc versions
diff --git a/pkgs/applications/blockchains/monero-gui/default.nix b/pkgs/applications/blockchains/monero-gui/default.nix
index 7a8f5d4c26cb..7e8a5fe73dcd 100644
--- a/pkgs/applications/blockchains/monero-gui/default.nix
+++ b/pkgs/applications/blockchains/monero-gui/default.nix
@@ -73,14 +73,14 @@ stdenv.mkDerivation rec {
       unbound
       zeromq
     ]
-    ++ lib.optionals stdenv.isDarwin [ qtmacextras ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ qtmacextras ]
     ++ lib.optionals trezorSupport [
       hidapi
       libusb1
       protobuf_21
       python3
     ]
-    ++ lib.optionals (trezorSupport && stdenv.isLinux) [
+    ++ lib.optionals (trezorSupport && stdenv.hostPlatform.isLinux) [
       udev
     ];
 
diff --git a/pkgs/applications/blockchains/optimism/geth.nix b/pkgs/applications/blockchains/optimism/geth.nix
index 722402e704d3..473ee254d08f 100644
--- a/pkgs/applications/blockchains/optimism/geth.nix
+++ b/pkgs/applications/blockchains/optimism/geth.nix
@@ -37,7 +37,7 @@ buildGoModule rec {
 
   # Fix for usb-related segmentation faults on darwin
   propagatedBuildInputs =
-    lib.optionals stdenv.isDarwin [ libobjc IOKit ];
+    lib.optionals stdenv.hostPlatform.isDarwin [ libobjc IOKit ];
 
   ldflags = [ "-s" "-w" ];
 
diff --git a/pkgs/applications/blockchains/particl-core/default.nix b/pkgs/applications/blockchains/particl-core/default.nix
index cacb8f5f4619..12e86358c954 100644
--- a/pkgs/applications/blockchains/particl-core/default.nix
+++ b/pkgs/applications/blockchains/particl-core/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Privacy-Focused Marketplace & Decentralized Application Platform";
     longDescription = ''
       An open source, decentralized privacy platform built for global person to person eCommerce.
diff --git a/pkgs/applications/blockchains/polkadot/default.nix b/pkgs/applications/blockchains/polkadot/default.nix
index 546348d3c433..65e945d77d30 100644
--- a/pkgs/applications/blockchains/polkadot/default.nix
+++ b/pkgs/applications/blockchains/polkadot/default.nix
@@ -69,8 +69,8 @@ rustPlatform.buildRustPackage rec {
 
   # NOTE: jemalloc is used by default on Linux with unprefixed enabled
   buildInputs = [ openssl ] ++
-    lib.optionals stdenv.isLinux [ rust-jemalloc-sys-unprefixed ] ++
-    lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+    lib.optionals stdenv.hostPlatform.isLinux [ rust-jemalloc-sys-unprefixed ] ++
+    lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
   # NOTE: disable building `core`/`std` in wasm environment since rust-src isn't
   # available for `rustc-wasm32`
diff --git a/pkgs/applications/blockchains/snarkos/default.nix b/pkgs/applications/blockchains/snarkos/default.nix
index e4dc85f3c4d5..0cebbecc0309 100644
--- a/pkgs/applications/blockchains/snarkos/default.nix
+++ b/pkgs/applications/blockchains/snarkos/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   # buildAndTestSubdir = "cli";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config rustPlatform.bindgenHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config rustPlatform.bindgenHook ];
 
   # Needed to get openssl-sys to use pkg-config.
   OPENSSL_NO_VENDOR = 1;
@@ -35,11 +35,11 @@ rustPlatform.buildRustPackage rec {
   # ROCKSDB_INCLUDE_DIR="${rocksdb}/include";
   # ROCKSDB_LIB_DIR="${rocksdb}/lib";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security curl ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security curl ];
 
   # some tests are flaky and some need network access
   # TODO finish filtering the tests to enable them
-  doCheck = !stdenv.isLinux;
+  doCheck = !stdenv.hostPlatform.isLinux;
   # checkFlags = [
   #   # tries to make a network access
   #   "--skip=rpc::rpc::tests::test_send_transaction_large"
diff --git a/pkgs/applications/blockchains/solana-validator/default.nix b/pkgs/applications/blockchains/solana-validator/default.nix
index 0d664374efa0..5b18f5fc4cc4 100644
--- a/pkgs/applications/blockchains/solana-validator/default.nix
+++ b/pkgs/applications/blockchains/solana-validator/default.nix
@@ -75,8 +75,8 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config protobuf rustfmt perl rustPlatform.bindgenHook ];
   buildInputs =
-    [ openssl zlib libclang hidapi ] ++ (lib.optionals stdenv.isLinux [ udev ])
-    ++ lib.optionals stdenv.isDarwin [ Security System Libsystem libcxx ];
+    [ openssl zlib libclang hidapi ] ++ (lib.optionals stdenv.hostPlatform.isLinux [ udev ])
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security System Libsystem libcxx ];
   strictDeps = true;
 
   doCheck = false;
@@ -88,7 +88,7 @@ rustPlatform.buildRustPackage rec {
 
     # If set, always finds OpenSSL in the system, even if the vendored feature is enabled.
     OPENSSL_NO_VENDOR = "1";
-  } // lib.optionalAttrs stdenv.isDarwin {
+  } // lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     # Require this on darwin otherwise the compiler starts rambling about missing
     # cmath functions
     CPPFLAGS = "-isystem ${lib.getDev libcxx}/include/c++/v1";
diff --git a/pkgs/applications/blockchains/teos/default.nix b/pkgs/applications/blockchains/teos/default.nix
index c2e4fb01384d..61299621e0fb 100644
--- a/pkgs/applications/blockchains/teos/default.nix
+++ b/pkgs/applications/blockchains/teos/default.nix
@@ -40,7 +40,7 @@ in
       rustfmt
     ];
 
-    buildInputs = lib.optionals stdenv.isDarwin [
+    buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
     ];
 
@@ -69,7 +69,7 @@ in
 
     buildInputs = [
       openssl
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.SystemConfiguration
     ];
 
diff --git a/pkgs/applications/blockchains/ton/default.nix b/pkgs/applications/blockchains/ton/default.nix
index 517e18ff941e..3a9db76def4e 100644
--- a/pkgs/applications/blockchains/ton/default.nix
+++ b/pkgs/applications/blockchains/ton/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     # The build fails on darwin as:
     #   error: aligned allocation function of type 'void *(std::size_t, std::align_val_t)' is only available on macOS 10.13 or newer
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Fully decentralized layer-1 blockchain designed by Telegram";
     homepage = "https://ton.org/";
     changelog = "https://github.com/ton-blockchain/ton/blob/v${version}/Changelog.md";
diff --git a/pkgs/applications/blockchains/wownero/default.nix b/pkgs/applications/blockchains/wownero/default.nix
index 836532c00bad..7ec9f8d83ed8 100644
--- a/pkgs/applications/blockchains/wownero/default.nix
+++ b/pkgs/applications/blockchains/wownero/default.nix
@@ -67,7 +67,7 @@ stdenv.mkDerivation rec {
     readline
     unbound
     zeromq
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.IOKit
   ];
 
diff --git a/pkgs/applications/blockchains/zcash/default.nix b/pkgs/applications/blockchains/zcash/default.nix
index dbada09c1b6e..35a3bdb91e8a 100644
--- a/pkgs/applications/blockchains/zcash/default.nix
+++ b/pkgs/applications/blockchains/zcash/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage.override { inherit stdenv; } rec {
     hash = "sha256-XGq/cYUo43FcpmRDO2YiNLCuEQLsTFLBFC4M1wM29l8=";
   };
 
-  prePatch = lib.optionalString stdenv.isAarch64 ''
+  prePatch = lib.optionalString stdenv.hostPlatform.isAarch64 ''
     substituteInPlace .cargo/config.offline \
       --replace "[target.aarch64-unknown-linux-gnu]" "" \
       --replace "linker = \"aarch64-linux-gnu-gcc\"" ""
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage.override { inherit stdenv; } rec {
     tl-expected
     utf8cpp
     zeromq
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/applications/display-managers/emptty/default.nix b/pkgs/applications/display-managers/emptty/default.nix
index de14859c983f..b4a55ece7675 100644
--- a/pkgs/applications/display-managers/emptty/default.nix
+++ b/pkgs/applications/display-managers/emptty/default.nix
@@ -27,7 +27,7 @@ buildGoModule rec {
     license = licenses.mit;
     maintainers = with maintainers; [ urandom ];
     # many undefined functions
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "emptty";
   };
 }
diff --git a/pkgs/applications/editors/codeblocks/default.nix b/pkgs/applications/editors/codeblocks/default.nix
index f22cafbbcec7..80fbe5674635 100644
--- a/pkgs/applications/editors/codeblocks/default.nix
+++ b/pkgs/applications/editors/codeblocks/default.nix
@@ -117,12 +117,12 @@ stdenv.mkDerivation rec {
     })
   ];
   preConfigure = "substituteInPlace ./configure --replace /usr/bin/file ${file}/bin/file";
-  postConfigure = lib.optionalString stdenv.isLinux "substituteInPlace libtool --replace ldconfig ${stdenv.cc.libc.bin}/bin/ldconfig";
+  postConfigure = lib.optionalString stdenv.hostPlatform.isLinux "substituteInPlace libtool --replace ldconfig ${stdenv.cc.libc.bin}/bin/ldconfig";
   configureFlags = [ "--enable-pch=no" ] ++ lib.optionals contribPlugins [
-    ("--with-contrib-plugins=all,-FileManager" + lib.optionalString stdenv.isDarwin ",-NassiShneiderman")
+    ("--with-contrib-plugins=all,-FileManager" + lib.optionalString stdenv.hostPlatform.isDarwin ",-NassiShneiderman")
     "--with-boost-libdir=${boost}/lib"
   ];
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     ln -s $out/lib/codeblocks/plugins $out/share/codeblocks/plugins
   '';
 
diff --git a/pkgs/applications/editors/dit/default.nix b/pkgs/applications/editors/dit/default.nix
index d0ded7ae72bd..d809348b3f52 100644
--- a/pkgs/applications/editors/dit/default.nix
+++ b/pkgs/applications/editors/dit/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [ ncurses lua ]
-    ++ lib.optional stdenv.isDarwin libiconv;
+    ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   # fix paths
   prePatch = ''
diff --git a/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix b/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix
index d61d83bb5aaa..e680e1f7e63e 100644
--- a/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix
+++ b/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix
@@ -253,7 +253,7 @@ let
                   pkgs.zlib.dev
                   pkgs.cairo.dev
                 ]
-                ++ lib.optional pkgs.stdenv.isLinux pkgs.stdenv.cc.libc.dev
+                ++ lib.optional pkgs.stdenv.hostPlatform.isLinux pkgs.stdenv.cc.libc.dev
               )
             )} server/epdfinfo
           '';
@@ -303,7 +303,7 @@ let
             rm -rf $out/share/emacs/site-lisp/elpa/*/server
           '';
           dontUseCmakeBuildDir = true;
-          doCheck = pkgs.stdenv.isLinux;
+          doCheck = pkgs.stdenv.hostPlatform.isLinux;
           buildInputs = old.buildInputs ++ [ pkgs.llvmPackages.libclang ];
           nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.cmake pkgs.llvmPackages.llvm ];
         });
@@ -702,7 +702,7 @@ let
 
         # Build a helper executable that interacts with the macOS Dictionary.app
         osx-dictionary =
-          if pkgs.stdenv.isDarwin
+          if pkgs.stdenv.hostPlatform.isDarwin
           then super.osx-dictionary.overrideAttrs (old: {
             buildInputs =
               old.buildInputs ++
diff --git a/pkgs/applications/editors/emacs/make-emacs.nix b/pkgs/applications/editors/emacs/make-emacs.nix
index cbcd022c3d35..bdd80f8922a3 100644
--- a/pkgs/applications/editors/emacs/make-emacs.nix
+++ b/pkgs/applications/editors/emacs/make-emacs.nix
@@ -67,26 +67,26 @@
 , withAlsaLib ? false
 , withAthena ? false
 , withCsrc ? true
-, withDbus ? stdenv.isLinux
+, withDbus ? stdenv.hostPlatform.isLinux
 , withGTK3 ? withPgtk && !noGui
 , withGlibNetworking ? withPgtk || withGTK3 || (withX && withXwidgets)
-, withGpm ? stdenv.isLinux
+, withGpm ? stdenv.hostPlatform.isLinux
 , withImageMagick ? lib.versionOlder version "27" && (withX || withNS)
 # Emacs 30+ has native JSON support
 , withJansson ? lib.versionOlder version "30"
 , withMailutils ? true
 , withMotif ? false
-, withNS ? stdenv.isDarwin && !(variant == "macport" || noGui)
+, withNS ? stdenv.hostPlatform.isDarwin && !(variant == "macport" || noGui)
 , withPgtk ? false
-, withSelinux ? stdenv.isLinux
+, withSelinux ? stdenv.hostPlatform.isLinux
 , withSQLite3 ? lib.versionAtLeast version "29"
 , withSystemd ? lib.meta.availableOn stdenv.hostPlatform systemd
 , withToolkitScrollBars ? true
 , withTreeSitter ? lib.versionAtLeast version "29"
 , withWebP ? lib.versionAtLeast version "29"
-, withX ? !(stdenv.isDarwin || noGui || withPgtk)
+, withX ? !(stdenv.hostPlatform.isDarwin || noGui || withPgtk)
 , withXinput2 ? withX && lib.versionAtLeast version "29"
-, withXwidgets ? !stdenv.isDarwin && !noGui && (withGTK3 || withPgtk)
+, withXwidgets ? !stdenv.hostPlatform.isDarwin && !noGui && (withGTK3 || withPgtk)
 , withSmallJaDic ? false
 , withCompressInstall ? true
 
@@ -117,10 +117,10 @@
 assert (withGTK3 && !withNS && variant != "macport") -> withX || withPgtk;
 
 assert noGui -> !(withX || withGTK3 || withNS || variant == "macport");
-assert withAcl -> stdenv.isLinux;
-assert withAlsaLib -> stdenv.isLinux;
-assert withGpm -> stdenv.isLinux;
-assert withNS -> stdenv.isDarwin && !(withX || variant == "macport");
+assert withAcl -> stdenv.hostPlatform.isLinux;
+assert withAlsaLib -> stdenv.hostPlatform.isLinux;
+assert withGpm -> stdenv.hostPlatform.isLinux;
+assert withNS -> stdenv.hostPlatform.isDarwin && !(withX || variant == "macport");
 assert withPgtk -> withGTK3 && !withX;
 assert withXwidgets -> !noGui && (withGTK3 || withPgtk);
 
@@ -229,9 +229,9 @@ mkDerivation (finalAttrs: {
     dbus
   ] ++ lib.optionals withSelinux [
     libselinux
-  ] ++ lib.optionals (!stdenv.isDarwin && withGTK3) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin && withGTK3) [
     gsettings-desktop-schemas
-  ] ++ lib.optionals (stdenv.isLinux && withX) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && withX) [
     libotf
     m17n_lib
   ] ++ lib.optionals (withX && withGTK3) [
@@ -275,7 +275,7 @@ mkDerivation (finalAttrs: {
     libXi
   ] ++ lib.optionals withXwidgets [
     webkitgtk
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     sigtool
   ] ++ lib.optionals withNS [
     librsvg
@@ -332,7 +332,7 @@ mkDerivation (finalAttrs: {
     (lib.withFeature true "mac")
     (lib.withFeature true "xml2")
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     (lib.withFeature withNS "ns")
   ]
   ++ [
@@ -399,7 +399,7 @@ mkDerivation (finalAttrs: {
       -f batch-native-compile $out/share/emacs/site-lisp/site-start.el
   '';
 
-  postFixup = lib.optionalString (stdenv.isLinux && withX && toolkit == "lucid") ''
+  postFixup = lib.optionalString (stdenv.hostPlatform.isLinux && withX && toolkit == "lucid") ''
       patchelf --add-rpath ${lib.makeLibraryPath [ libXcursor ]} $out/bin/emacs
       patchelf --add-needed "libXcursor.so.1" "$out/bin/emacs"
   '';
diff --git a/pkgs/applications/editors/gedit/default.nix b/pkgs/applications/editors/gedit/default.nix
index 7a7d05df52e8..7a1edc7294b1 100644
--- a/pkgs/applications/editors/gedit/default.nix
+++ b/pkgs/applications/editors/gedit/default.nix
@@ -71,7 +71,7 @@ stdenv.mkDerivation rec {
     libgedit-gtksourceview
     libgedit-tepl
     libpeas
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     gtk-mac-integration
   ];
 
diff --git a/pkgs/applications/editors/heh/default.nix b/pkgs/applications/editors/heh/default.nix
index bd7907f7682c..f89ee5a76a0a 100644
--- a/pkgs/applications/editors/heh/default.nix
+++ b/pkgs/applications/editors/heh/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-eqWBTylvXqGhWdSGHdTM1ZURSD5pkUBoBOvBJ5zmJ7w=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     AppKit
   ]);
 
diff --git a/pkgs/applications/editors/jetbrains/default.nix b/pkgs/applications/editors/jetbrains/default.nix
index 8188a82c2c80..0e3241a0397c 100644
--- a/pkgs/applications/editors/jetbrains/default.nix
+++ b/pkgs/applications/editors/jetbrains/default.nix
@@ -39,7 +39,7 @@ let
 
   products = versions.${system} or (throw "Unsupported system: ${system}");
 
-  package = if stdenv.isDarwin then ./bin/darwin.nix else ./bin/linux.nix;
+  package = if stdenv.hostPlatform.isDarwin then ./bin/darwin.nix else ./bin/linux.nix;
   mkJetBrainsProductCore = callPackage package { inherit vmopts; };
   mkMeta = meta: fromSource: {
     inherit (meta) homepage longDescription;
@@ -47,7 +47,7 @@ let
     maintainers = map (x: lib.maintainers."${x}") meta.maintainers;
     license = if meta.isOpenSource then lib.licenses.asl20 else lib.licenses.unfree;
     sourceProvenance = if fromSource then [ lib.sourceTypes.fromSource ] else
-      (if stdenv.isDarwin then [ lib.sourceTypes.binaryNativeCode ] else [ lib.sourceTypes.binaryBytecode ]);
+      (if stdenv.hostPlatform.isDarwin then [ lib.sourceTypes.binaryNativeCode ] else [ lib.sourceTypes.binaryBytecode ]);
   };
 
   mkJetBrainsProduct =
@@ -85,7 +85,7 @@ let
     });
 
   buildPycharm = args:
-    (mkJetBrainsProduct args).overrideAttrs (finalAttrs: previousAttrs: lib.optionalAttrs stdenv.isLinux {
+    (mkJetBrainsProduct args).overrideAttrs (finalAttrs: previousAttrs: lib.optionalAttrs stdenv.hostPlatform.isLinux {
       buildInputs = with python3.pkgs; (previousAttrs.buildInputs or []) ++ [ python3 setuptools ];
       preInstall = ''
         echo "compiling cython debug speedups"
@@ -106,7 +106,7 @@ rec {
 
   clion = (mkJetBrainsProduct {
     pname = "clion";
-    extraBuildInputs = lib.optionals (stdenv.isLinux) [
+    extraBuildInputs = lib.optionals (stdenv.hostPlatform.isLinux) [
       fontconfig
       python3
       stdenv.cc.cc
@@ -114,13 +114,13 @@ rec {
       libxcrypt-legacy
       lttng-ust_2_12
       musl
-    ] ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    ] ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       expat
       libxml2
       xz
     ];
   }).overrideAttrs (attrs: {
-    postInstall = (attrs.postInstall or "") + lib.optionalString (stdenv.isLinux) ''
+    postInstall = (attrs.postInstall or "") + lib.optionalString (stdenv.hostPlatform.isLinux) ''
       (
         cd $out/clion
 
@@ -131,7 +131,7 @@ rec {
       )
     '';
 
-    postFixup = (attrs.postFixup or "") + lib.optionalString (stdenv.isLinux) ''
+    postFixup = (attrs.postFixup or "") + lib.optionalString (stdenv.hostPlatform.isLinux) ''
       (
         cd $out/clion
 
@@ -175,7 +175,7 @@ rec {
     extraBuildInputs = [ libgcc stdenv.cc.cc ];
   }).overrideAttrs
     (attrs: {
-      postFixup = (attrs.postFixup or "") + lib.optionalString stdenv.isLinux ''
+      postFixup = (attrs.postFixup or "") + lib.optionalString stdenv.hostPlatform.isLinux ''
         interp="$(cat $NIX_CC/nix-support/dynamic-linker)"
         patchelf --set-interpreter $interp $out/goland/plugins/go-plugin/lib/dlv/linux/dlv
         chmod +x $out/goland/plugins/go-plugin/lib/dlv/linux/dlv
@@ -186,7 +186,7 @@ rec {
 
   idea-community-src = buildIdea { pname = "idea-community"; extraBuildInputs = [ stdenv.cc.cc ]; fromSource = true; };
 
-  idea-community = if stdenv.isDarwin || stdenv.isAarch64 then idea-community-bin else idea-community-src;
+  idea-community = if stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isAarch64 then idea-community-bin else idea-community-src;
 
   idea-ultimate = buildIdea { pname = "idea-ultimate"; extraBuildInputs = [ stdenv.cc.cc lldb musl ]; };
 
@@ -198,7 +198,7 @@ rec {
 
   pycharm-community-src = buildPycharm { pname = "pycharm-community"; fromSource = true; };
 
-  pycharm-community = if stdenv.isDarwin then pycharm-community-bin else pycharm-community-src;
+  pycharm-community = if stdenv.hostPlatform.isDarwin then pycharm-community-bin else pycharm-community-src;
 
   pycharm-professional = buildPycharm { pname = "pycharm-professional"; extraBuildInputs = [ musl ]; };
 
@@ -211,14 +211,14 @@ rec {
         libxcrypt
         lttng-ust_2_12
         musl
-      ]++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+      ]++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
         expat
         libxml2
         xz
       ];
 
     }).overrideAttrs (attrs: {
-      postInstall = (attrs.postInstall or "") + lib.optionalString (stdenv.isLinux) ''
+      postInstall = (attrs.postInstall or "") + lib.optionalString (stdenv.hostPlatform.isLinux) ''
         (
           cd $out/rider
 
@@ -240,20 +240,20 @@ rec {
 
   rust-rover = (mkJetBrainsProduct {
     pname = "rust-rover";
-    extraBuildInputs = lib.optionals (stdenv.isLinux) [
+    extraBuildInputs = lib.optionals (stdenv.hostPlatform.isLinux) [
       python3
       openssl
       libxcrypt-legacy
       fontconfig
       xorg.libX11
       libGL
-    ] ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    ] ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       expat
       libxml2
       xz
     ];
   }).overrideAttrs (attrs: {
-    postFixup = (attrs.postFixup or "") + lib.optionalString (stdenv.isLinux) ''
+    postFixup = (attrs.postFixup or "") + lib.optionalString (stdenv.hostPlatform.isLinux) ''
       (
         cd $out/rust-rover
 
diff --git a/pkgs/applications/editors/jetbrains/plugins/specialPlugins.nix b/pkgs/applications/editors/jetbrains/plugins/specialPlugins.nix
index dcd6554c791d..574938eef0d3 100644
--- a/pkgs/applications/editors/jetbrains/plugins/specialPlugins.nix
+++ b/pkgs/applications/editors/jetbrains/plugins/specialPlugins.nix
@@ -27,7 +27,7 @@
     buildInputs = [ delve ];
     buildPhase =
       let
-        arch = (if stdenv.isLinux then "linux" else "mac") + (if stdenv.isAarch64 then "arm" else "");
+        arch = (if stdenv.hostPlatform.isLinux then "linux" else "mac") + (if stdenv.hostPlatform.isAarch64 then "arm" else "");
       in ''
         runHook preBuild
         ln -sf ${delve}/bin/dlv lib/dlv/${arch}/dlv
diff --git a/pkgs/applications/editors/lapce/default.nix b/pkgs/applications/editors/lapce/default.nix
index 8de4d1882bc5..68ff13a0212a 100644
--- a/pkgs/applications/editors/lapce/default.nix
+++ b/pkgs/applications/editors/lapce/default.nix
@@ -25,7 +25,7 @@
 , xorg
 }:
 let
-  rpathLibs = lib.optionals stdenv.isLinux [
+  rpathLibs = lib.optionals stdenv.hostPlatform.isLinux [
     libGL
     libxkbcommon
     xorg.libX11
@@ -89,9 +89,9 @@ rustPlatform.buildRustPackage rec {
     glib
     gtk3
     openssl
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     fontconfig
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libobjc
     Security
     CoreServices
@@ -100,7 +100,7 @@ rustPlatform.buildRustPackage rec {
     AppKit
   ];
 
-  postInstall = if stdenv.isLinux then ''
+  postInstall = if stdenv.hostPlatform.isLinux then ''
     install -Dm0644 $src/extra/images/logo.svg $out/share/icons/hicolor/scalable/apps/dev.lapce.lapce.svg
     install -Dm0644 $src/extra/linux/dev.lapce.lapce.desktop $out/share/applications/lapce.desktop
 
@@ -125,6 +125,6 @@ rustPlatform.buildRustPackage rec {
     maintainers = with maintainers; [ elliot ];
     mainProgram = "lapce";
     # Undefined symbols for architecture x86_64: "_NSPasteboardTypeFileURL"
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 }
diff --git a/pkgs/applications/editors/libresprite/default.nix b/pkgs/applications/editors/libresprite/default.nix
index 02e225a5ffe0..5d4031b064ec 100644
--- a/pkgs/applications/editors/libresprite/default.nix
+++ b/pkgs/applications/editors/libresprite/default.nix
@@ -69,7 +69,7 @@ stdenv.mkDerivation (finalAttrs: {
     SDL2_image
     lua
     # no v8 due to missing libplatform and libbase
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Cocoa
     Foundation
@@ -80,7 +80,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-DWITH_WEBP_SUPPORT=ON"
   ];
 
-  hardeningDisable = lib.optional stdenv.isDarwin "format";
+  hardeningDisable = lib.optional stdenv.hostPlatform.isDarwin "format";
 
   # Install mime icons. Note that the mimetype is still "x-aseprite"
   postInstall = ''
@@ -116,6 +116,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with maintainers; [ fgaz ];
     platforms = platforms.all;
     # https://github.com/LibreSprite/LibreSprite/issues/308
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/applications/editors/lite-xl/default.nix b/pkgs/applications/editors/lite-xl/default.nix
index 55fce51ac9f7..ac13fc3bf566 100644
--- a/pkgs/applications/editors/lite-xl/default.nix
+++ b/pkgs/applications/editors/lite-xl/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     lua5_4
     pcre2
     SDL2
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Foundation
   ];
 
diff --git a/pkgs/applications/editors/mindforger/default.nix b/pkgs/applications/editors/mindforger/default.nix
index bd8a4b0c648e..db4d65de7959 100644
--- a/pkgs/applications/editors/mindforger/default.nix
+++ b/pkgs/applications/editors/mindforger/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     "CONFIG+=mfwebengine"
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir "$out"/Applications
     mv app/mindforger.app "$out"/Applications/
   '';
diff --git a/pkgs/applications/editors/nedit/default.nix b/pkgs/applications/editors/nedit/default.nix
index 374c5ee28c84..d329220409c3 100644
--- a/pkgs/applications/editors/nedit/default.nix
+++ b/pkgs/applications/editors/nedit/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ motif libXpm libXt ];
 
   # the linux config works fine on darwin too!
-  buildFlags = lib.optional (stdenv.isLinux || stdenv.isDarwin) "linux";
+  buildFlags = lib.optional (stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isDarwin) "linux";
 
   env.NIX_CFLAGS_COMPILE = "-DBUILD_UNTESTED_NEDIT -L${motif}/lib";
 
diff --git a/pkgs/applications/editors/neovim/gnvim/wrapper.nix b/pkgs/applications/editors/neovim/gnvim/wrapper.nix
index 1cf02746f9ae..7869885d1b74 100644
--- a/pkgs/applications/editors/neovim/gnvim/wrapper.nix
+++ b/pkgs/applications/editors/neovim/gnvim/wrapper.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
     makeWrapper '${gnvim-unwrapped}/bin/gnvim' "$out/bin/gnvim" \
       --prefix PATH : "${neovim}/bin" \
       --set GNVIM_RUNTIME_PATH "${gnvim-unwrapped}/share/gnvim/runtime"
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mkdir -p "$out/share"
     ln -s '${gnvim-unwrapped}/share/icons' "$out/share/icons"
 
diff --git a/pkgs/applications/editors/neovim/wrapper.nix b/pkgs/applications/editors/neovim/wrapper.nix
index 8b31ed0a2a38..8bcd1b5ebbd6 100644
--- a/pkgs/applications/editors/neovim/wrapper.nix
+++ b/pkgs/applications/editors/neovim/wrapper.nix
@@ -105,7 +105,7 @@ let
       luaRcContent = rcContent;
       # Remove the symlinks created by symlinkJoin which we need to perform
       # extra actions upon
-      postBuild = lib.optionalString stdenv.isLinux ''
+      postBuild = lib.optionalString stdenv.hostPlatform.isLinux ''
         rm $out/share/applications/nvim.desktop
         substitute ${neovim-unwrapped}/share/applications/nvim.desktop $out/share/applications/nvim.desktop \
           --replace-warn 'Name=Neovim' 'Name=Neovim wrapper'
diff --git a/pkgs/applications/editors/notepad-next/default.nix b/pkgs/applications/editors/notepad-next/default.nix
index 45004d470281..2a20691351d1 100644
--- a/pkgs/applications/editors/notepad-next/default.nix
+++ b/pkgs/applications/editors/notepad-next/default.nix
@@ -27,7 +27,7 @@ mkDerivation rec {
       --replace '$$[QT_INSTALL_TRANSLATIONS]/qt_zh_CN.qm' ""
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mv $out/bin $out/Applications
     rm -fr $out/share
   '';
@@ -38,7 +38,7 @@ mkDerivation rec {
     license = licenses.gpl3Plus;
     platforms = platforms.unix;
     maintainers = [ maintainers.sebtm ];
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
     mainProgram = "NotepadNext";
   };
 }
diff --git a/pkgs/applications/editors/nvi/default.nix b/pkgs/applications/editors/nvi/default.nix
index 2001ba2497d1..c5ef872bffff 100644
--- a/pkgs/applications/editors/nvi/default.nix
+++ b/pkgs/applications/editors/nvi/default.nix
@@ -35,6 +35,6 @@ stdenv.mkDerivation rec {
     description = "Berkeley Vi Editor";
     license = licenses.free;
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/nvi.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/nvi.x86_64-darwin
   };
 }
diff --git a/pkgs/applications/editors/qxmledit/default.nix b/pkgs/applications/editors/qxmledit/default.nix
index 1991b2a7bc77..946a56917d63 100644
--- a/pkgs/applications/editors/qxmledit/default.nix
+++ b/pkgs/applications/editors/qxmledit/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   dontWrapQtApps = true;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Simple XML editor based on qt libraries";
     homepage = "https://sourceforge.net/projects/qxmledit";
     license = licenses.lgpl2;
diff --git a/pkgs/applications/editors/rehex/default.nix b/pkgs/applications/editors/rehex/default.nix
index 55e737a78039..f6f1bf2b28b1 100644
--- a/pkgs/applications/editors/rehex/default.nix
+++ b/pkgs/applications/editors/rehex/default.nix
@@ -30,19 +30,19 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ pkg-config which zip ]
-    ++ lib.optionals stdenv.isDarwin [ libicns ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libicns ];
 
   buildInputs = [ botan3 capstone jansson libunistring wxGTK32 ]
     ++ (with lua53Packages; [ lua busted ])
     ++ (with perlPackages; [ perl TemplateToolkit ])
-    ++ lib.optionals stdenv.isLinux [ gtk3 ]
-    ++ lib.optionals stdenv.isDarwin [ Carbon Cocoa IOKit ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ gtk3 ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon Cocoa IOKit ];
 
   makeFlags = [
     "prefix=${placeholder "out"}"
     "BOTAN_PKG=botan-3"
     "CXXSTD=-std=c++20"
-  ] ++ lib.optionals stdenv.isDarwin [ "-f Makefile.osx" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "-f Makefile.osx" ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/applications/editors/rstudio/default.nix b/pkgs/applications/editors/rstudio/default.nix
index 4d606904e2f6..55998bcbe3c9 100644
--- a/pkgs/applications/editors/rstudio/default.nix
+++ b/pkgs/applications/editors/rstudio/default.nix
@@ -212,7 +212,7 @@ in
     '';
 
     meta = {
-      broken = (stdenv.isLinux && stdenv.isAarch64);
+      broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
       inherit description;
       homepage = "https://www.rstudio.com/";
       license = lib.licenses.agpl3Only;
diff --git a/pkgs/applications/editors/sublime/2/default.nix b/pkgs/applications/editors/sublime/2/default.nix
index 6c9a43779f76..a57fc8d7de90 100644
--- a/pkgs/applications/editors/sublime/2/default.nix
+++ b/pkgs/applications/editors/sublime/2/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     echo ${libPath}
     patchelf \
       --interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
-      --set-rpath ${libPath}:${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.is64bit "64"} \
+      --set-rpath ${libPath}:${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.hostPlatform.is64bit "64"} \
       $out/sublime/sublime_text
 
     mkdir -p $out/share/icons
diff --git a/pkgs/applications/editors/sublime/3/common.nix b/pkgs/applications/editors/sublime/3/common.nix
index ad89c80fc8e4..7eff7d9bf4df 100644
--- a/pkgs/applications/editors/sublime/3/common.nix
+++ b/pkgs/applications/editors/sublime/3/common.nix
@@ -65,7 +65,7 @@ let
       for binary in ${ builtins.concatStringsSep " " binaries }; do
         patchelf \
           --interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
-          --set-rpath ${libPath}:${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.is64bit "64"} \
+          --set-rpath ${libPath}:${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.hostPlatform.is64bit "64"} \
           $binary
       done
 
@@ -92,7 +92,7 @@ let
 
     postFixup = ''
       wrapProgram $out/sublime_bash \
-        --set LD_PRELOAD "${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.is64bit "64"}/libgcc_s.so.1"
+        --set LD_PRELOAD "${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.hostPlatform.is64bit "64"}/libgcc_s.so.1"
 
       wrapProgram $out/${primaryBinary} \
         --set LD_PRELOAD "${libredirect}/lib/libredirect.so" \
@@ -101,7 +101,7 @@ let
         "''${gappsWrapperArgs[@]}"
 
       # Without this, plugin_host crashes, even though it has the rpath
-      wrapProgram $out/plugin_host --prefix LD_PRELOAD : ${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.is64bit "64"}/libgcc_s.so.1:${lib.getLib openssl}/lib/libssl.so:${bzip2.out}/lib/libbz2.so
+      wrapProgram $out/plugin_host --prefix LD_PRELOAD : ${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.hostPlatform.is64bit "64"}/libgcc_s.so.1:${lib.getLib openssl}/lib/libssl.so:${bzip2.out}/lib/libbz2.so
     '';
   };
 in stdenv.mkDerivation (rec {
diff --git a/pkgs/applications/editors/sublime/4/common.nix b/pkgs/applications/editors/sublime/4/common.nix
index 730f9c10b8f5..b594633ea3cb 100644
--- a/pkgs/applications/editors/sublime/4/common.nix
+++ b/pkgs/applications/editors/sublime/4/common.nix
@@ -88,7 +88,7 @@ let
       for binary in ${builtins.concatStringsSep " " binaries}; do
         patchelf \
           --interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
-          --set-rpath ${lib.makeLibraryPath neededLibraries}:${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.is64bit "64"} \
+          --set-rpath ${lib.makeLibraryPath neededLibraries}:${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.hostPlatform.is64bit "64"} \
           $binary
       done
 
diff --git a/pkgs/applications/editors/texmacs/default.nix b/pkgs/applications/editors/texmacs/default.nix
index ce8939dfc34d..92d162cdc300 100644
--- a/pkgs/applications/editors/texmacs/default.nix
+++ b/pkgs/applications/editors/texmacs/default.nix
@@ -58,18 +58,18 @@ stdenv.mkDerivation {
     sqlite
     git
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     qtmacextras
   ];
 
-  cmakeFlags = lib.optionals stdenv.isDarwin [
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     (lib.cmakeFeature "TEXMACS_GUI" "Qt")
     (lib.cmakeFeature "CMAKE_INSTALL_PREFIX" "./TeXmacs.app/Contents/Resources")
   ];
 
   env.NIX_LDFLAGS = "-lz";
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications,bin}
     mv TeXmacs.app $out/Applications/
     makeWrapper $out/Applications/TeXmacs.app/Contents/MacOS/TeXmacs $out/bin/texmacs
@@ -87,7 +87,7 @@ stdenv.mkDerivation {
     ])
   ];
 
-  postFixup = lib.optionalString (!stdenv.isDarwin) ''
+  postFixup = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     wrapQtApp $out/bin/texmacs
   '';
 
diff --git a/pkgs/applications/editors/texstudio/default.nix b/pkgs/applications/editors/texstudio/default.nix
index f0bed0eb3863..728ff5525e98 100644
--- a/pkgs/applications/editors/texstudio/default.nix
+++ b/pkgs/applications/editors/texstudio/default.nix
@@ -28,11 +28,11 @@ stdenv.mkDerivation (finalAttrs: {
     qttools
     quazip
     zlib
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p "$out/Applications"
     mv "$out/bin/texstudio.app" "$out/Applications"
     rm -d "$out/bin"
diff --git a/pkgs/applications/editors/texworks/default.nix b/pkgs/applications/editors/texworks/default.nix
index 4ddd4c9cb6c1..a20bc426b3ca 100644
--- a/pkgs/applications/editors/texworks/default.nix
+++ b/pkgs/applications/editors/texworks/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     qttools
   ] ++ lib.optional withLua lua
     ++ lib.optional withPython python3
-    ++ lib.optional stdenv.isLinux qtwayland;
+    ++ lib.optional stdenv.hostPlatform.isLinux qtwayland;
 
   cmakeFlags = [
     "-DQT_DEFAULT_MAJOR_VERSION=6"
diff --git a/pkgs/applications/editors/tijolo/default.nix b/pkgs/applications/editors/tijolo/default.nix
index 060c30a171a6..54f0f154ab37 100644
--- a/pkgs/applications/editors/tijolo/default.nix
+++ b/pkgs/applications/editors/tijolo/default.nix
@@ -38,7 +38,7 @@ crystal.buildCrystalPackage rec {
   '';
 
   nativeBuildInputs = [ wrapGAppsHook4 gobject-introspection ]
-    ++ lib.optionals stdenv.isDarwin [ desktopToDarwinBundle ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ desktopToDarwinBundle ];
   buildInputs = [ gtk4 libadwaita vte-gtk4 libgit2 gtksourceview5 editorconfig-core-c ];
 
   buildTargets = [ "all" ];
diff --git a/pkgs/applications/editors/vim/full.nix b/pkgs/applications/editors/vim/full.nix
index 663dc5b688c7..5183ee5d39f2 100644
--- a/pkgs/applications/editors/vim/full.nix
+++ b/pkgs/applications/editors/vim/full.nix
@@ -11,7 +11,7 @@
 
 , features          ? "huge" # One of tiny, small, normal, big or huge
 , wrapPythonDrv     ? false
-, guiSupport        ? config.vim.gui or (if stdenv.isDarwin then "gtk2" else "gtk3")
+, guiSupport        ? config.vim.gui or (if stdenv.hostPlatform.isDarwin then "gtk2" else "gtk3")
 , luaSupport        ? config.vim.lua or true
 , perlSupport       ? config.vim.perl or false      # Perl interpreter
 , pythonSupport     ? config.vim.python or true     # Python interpreter
@@ -104,7 +104,7 @@ in stdenv.mkDerivation {
     "vim_cv_memmove_handles_overlap=yes"
   ]
     ++ lib.optional (guiSupport == "gtk2" || guiSupport == "gtk3") "--enable-gui=${guiSupport}"
-  ++ lib.optional stdenv.isDarwin
+  ++ lib.optional stdenv.hostPlatform.isDarwin
      (if darwinSupport then "--enable-darwin" else "--disable-darwin")
   ++ lib.optionals luaSupport [
     "--with-lua-prefix=${lua}"
@@ -163,7 +163,7 @@ in stdenv.mkDerivation {
     ++ lib.optional sodiumSupport libsodium;
 
   # error: '__declspec' attributes are not enabled; use '-fdeclspec' or '-fms-extensions' to enable support for __declspec attributes
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-fdeclspec";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-fdeclspec";
 
   preConfigure = lib.optionalString ftNixSupport ''
       cp ${vimPlugins.vim-nix.src}/ftplugin/nix.vim runtime/ftplugin/nix.vim
@@ -176,7 +176,7 @@ in stdenv.mkDerivation {
 
   postInstall = ''
     ln -s $out/bin/vim $out/bin/vi
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     ln -sfn '${nixosRuntimepath}' "$out"/share/vim/vimrc
   '';
 
diff --git a/pkgs/applications/editors/vim/plugins/avante-nvim/default.nix b/pkgs/applications/editors/vim/plugins/avante-nvim/default.nix
index 0572977f207b..f3218a0f2ea4 100644
--- a/pkgs/applications/editors/vim/plugins/avante-nvim/default.nix
+++ b/pkgs/applications/editors/vim/plugins/avante-nvim/default.nix
@@ -47,7 +47,7 @@ let
       [
         openssl
       ]
-      ++ lib.optionals stdenv.isDarwin [
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [
         darwin.apple_sdk.frameworks.Security
       ];
 
diff --git a/pkgs/applications/editors/vim/plugins/overrides.nix b/pkgs/applications/editors/vim/plugins/overrides.nix
index 24876a338736..3d2d9f05881a 100644
--- a/pkgs/applications/editors/vim/plugins/overrides.nix
+++ b/pkgs/applications/editors/vim/plugins/overrides.nix
@@ -478,7 +478,7 @@ in
 
         buildInputs = [
           libuv.dev
-        ] ++ lib.optionals stdenv.isDarwin [
+        ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
           darwin.apple_sdk.frameworks.AppKit
         ];
       };
@@ -492,7 +492,7 @@ in
       # Note: the destination should be generator.so, even on darwin
       # https://github.com/mistricky/codesnap.nvim/blob/main/scripts/build_generator.sh
       postInstall = let
-        extension = if stdenv.isDarwin then "dylib" else "so";
+        extension = if stdenv.hostPlatform.isDarwin then "dylib" else "so";
       in ''
         rm -r $out/lua/*.so
         cp ${codesnap-lib}/lib/libgenerator.${extension} $out/lua/generator.so
@@ -597,7 +597,7 @@ in
         rev = "cd97c25320fb0a672b11bcd95d8332bb3088ecce";
         hash = "sha256-66NtKteM1mvHP5wAU4e9JbsF+bq91lmCDcTh/6RPhoo=";
       };
-      extension = if stdenv.isDarwin then "dylib" else "so";
+      extension = if stdenv.hostPlatform.isDarwin then "dylib" else "so";
       rustPackage = rustPlatform.buildRustPackage {
         pname = "cord.nvim-rust";
         inherit version src;
@@ -1003,11 +1003,11 @@ in
         src = LanguageClient-neovim-src;
 
         cargoHash = "sha256-H34UqJ6JOwuSABdOup5yKeIwFrGc83TUnw1ggJEx9o4=";
-        buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+        buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
         # FIXME: Use impure version of CoreFoundation because of missing symbols.
         #   Undefined symbols for architecture x86_64: "_CFURLResourceIsReachable"
-        preConfigure = lib.optionalString stdenv.isDarwin ''
+        preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
           export NIX_LDFLAGS="-F${CoreFoundation}/Library/Frameworks -framework CoreFoundation $NIX_LDFLAGS"
         '';
       };
@@ -1541,7 +1541,7 @@ in
 
         buildInputs =
           [ openssl ]
-          ++ lib.optionals stdenv.isDarwin [
+          ++ lib.optionals stdenv.hostPlatform.isDarwin [
             darwin.apple_sdk.frameworks.Security
             darwin.apple_sdk.frameworks.SystemConfiguration
           ];
@@ -1593,7 +1593,7 @@ in
         pname = "sniprun-bin";
         inherit version src;
 
-        buildInputs = lib.optionals stdenv.isDarwin [
+        buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
           darwin.apple_sdk.frameworks.Security
         ];
 
@@ -1895,7 +1895,7 @@ in
   };
 
   vim-addon-manager = super.vim-addon-manager.overrideAttrs {
-    buildInputs = lib.optional stdenv.isDarwin Cocoa;
+    buildInputs = lib.optional stdenv.hostPlatform.isDarwin Cocoa;
   };
 
   vim-addon-mru = super.vim-addon-mru.overrideAttrs {
@@ -1956,7 +1956,7 @@ in
     src = old.src.overrideAttrs (srcOld: {
       postFetch =
         (srcOld.postFetch or "")
-        + lib.optionalString (!stdenv.isDarwin) ''
+        + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
           rm $out/colors/darkBlue.vim
         '';
     });
diff --git a/pkgs/applications/editors/vim/plugins/vim-clap/default.nix b/pkgs/applications/editors/vim/plugins/vim-clap/default.nix
index 84a906b9e882..391370c54efd 100644
--- a/pkgs/applications/editors/vim/plugins/vim-clap/default.nix
+++ b/pkgs/applications/editors/vim/plugins/vim-clap/default.nix
@@ -49,7 +49,7 @@ let
     buildInputs = [
       libgit2
       zlib
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.AppKit
       darwin.apple_sdk.frameworks.CoreServices
       darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/applications/editors/vim/vimacs.nix b/pkgs/applications/editors/vim/vimacs.nix
index e65439df5236..e54ac39b2ae4 100644
--- a/pkgs/applications/editors/vim/vimacs.nix
+++ b/pkgs/applications/editors/vim/vimacs.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, config, vim-full, macvim, vimPlugins
-, useMacvim ? stdenv.isDarwin && (config.vimacs.macvim or true)
+, useMacvim ? stdenv.hostPlatform.isDarwin && (config.vimacs.macvim or true)
 , vimacsExtraArgs ? "" }:
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/applications/editors/vscode/extensions/chenglou92.rescript-vscode/default.nix b/pkgs/applications/editors/vscode/extensions/chenglou92.rescript-vscode/default.nix
index d0b27457b68a..686ff8652a45 100644
--- a/pkgs/applications/editors/vscode/extensions/chenglou92.rescript-vscode/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/chenglou92.rescript-vscode/default.nix
@@ -8,9 +8,9 @@ let
   version = "1.54.0";
   rescript-editor-analysis = callPackage ./rescript-editor-analysis.nix { inherit version; };
   arch =
-    if stdenv.isLinux then
+    if stdenv.hostPlatform.isLinux then
       "linux"
-    else if stdenv.isDarwin then
+    else if stdenv.hostPlatform.isDarwin then
       "darwin"
     else
       throw "Unsupported system: ${stdenv.system}";
diff --git a/pkgs/applications/editors/vscode/extensions/default.nix b/pkgs/applications/editors/vscode/extensions/default.nix
index cade496d6b53..7a6c1e0417b8 100644
--- a/pkgs/applications/editors/vscode/extensions/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/default.nix
@@ -1069,7 +1069,7 @@ let
             version = "0.8.44";
           }
           // sources.${stdenv.system};
-        nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+        nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
         buildInputs = [ stdenv.cc.cc.lib ];
         meta = {
           description = "Open-source autopilot for software development - bring the power of ChatGPT to your IDE";
@@ -3223,7 +3223,7 @@ let
             version = "2.1.11";
           }
           // sources.${stdenv.system};
-        nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+        nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
         buildInputs = [
           stdenv.cc.cc.lib
           zlib
diff --git a/pkgs/applications/editors/vscode/extensions/ms-dotnettools.csdevkit/default.nix b/pkgs/applications/editors/vscode/extensions/ms-dotnettools.csdevkit/default.nix
index 8d665025bba2..68a3673134ce 100644
--- a/pkgs/applications/editors/vscode/extensions/ms-dotnettools.csdevkit/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/ms-dotnettools.csdevkit/default.nix
@@ -106,7 +106,7 @@ buildVscodeMarketplaceExtension {
         chmod +x "${bin}"
       '') extInfo.binaries
     ))
-    + lib.optionalString stdenv.isLinux (
+    + lib.optionalString stdenv.hostPlatform.isLinux (
       lib.concatStringsSep "\n" (
         map (bin: ''
           patchelf_common "${bin}"
diff --git a/pkgs/applications/editors/vscode/extensions/ms-dotnettools.csharp/default.nix b/pkgs/applications/editors/vscode/extensions/ms-dotnettools.csharp/default.nix
index 9c26f92ca961..3e988c627219 100644
--- a/pkgs/applications/editors/vscode/extensions/ms-dotnettools.csharp/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/ms-dotnettools.csharp/default.nix
@@ -99,7 +99,7 @@ buildVscodeMarketplaceExtension {
         chmod +x "${bin}"
       '') extInfo.binaries
     ))
-    + lib.optionalString stdenv.isLinux (
+    + lib.optionalString stdenv.hostPlatform.isLinux (
       lib.concatStringsSep "\n" (
         map (bin: ''
           patchelf_common "${bin}"
diff --git a/pkgs/applications/editors/vscode/extensions/rust-lang.rust-analyzer/default.nix b/pkgs/applications/editors/vscode/extensions/rust-lang.rust-analyzer/default.nix
index a53fc7b8ca5b..e937da9c44b3 100644
--- a/pkgs/applications/editors/vscode/extensions/rust-lang.rust-analyzer/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/rust-lang.rust-analyzer/default.nix
@@ -52,7 +52,7 @@ let
         pkg-config
         libsecret
       ]
-      ++ lib.optionals stdenv.isDarwin [
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [
         darwin.apple_sdk.frameworks.AppKit
         darwin.apple_sdk.frameworks.Security
       ];
diff --git a/pkgs/applications/editors/vscode/extensions/sourcery.sourcery/default.nix b/pkgs/applications/editors/vscode/extensions/sourcery.sourcery/default.nix
index d9c3ee2358e2..0e61678a8f4b 100644
--- a/pkgs/applications/editors/vscode/extensions/sourcery.sourcery/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/sourcery.sourcery/default.nix
@@ -16,11 +16,11 @@ vscode-utils.buildVscodeMarketplaceExtension {
 
   postPatch = ''
     pushd sourcery_binaries/install
-    rm -r win ${if stdenv.isLinux then "mac" else "linux"}
+    rm -r win ${if stdenv.hostPlatform.isLinux then "mac" else "linux"}
     popd
   '';
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   buildInputs = [
     stdenv.cc.cc.lib
diff --git a/pkgs/applications/editors/vscode/extensions/vadimcn.vscode-lldb/default.nix b/pkgs/applications/editors/vscode/extensions/vadimcn.vscode-lldb/default.nix
index 0d55381e6597..20b81c3c70cd 100644
--- a/pkgs/applications/editors/vscode/extensions/vadimcn.vscode-lldb/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/vadimcn.vscode-lldb/default.nix
@@ -41,11 +41,11 @@ let
 
     cargoHash = "sha256-e/Jki/4pCs0qzaBVR4iiUhdBFmWlTZYREQkuFSoWYFo=";
 
-    buildInputs = lib.optionals stdenv.isDarwin [ lldb ];
+    buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ lldb ];
 
     nativeBuildInputs = [ makeWrapper ];
 
-    env = lib.optionalAttrs stdenv.isDarwin { NIX_LDFLAGS = "-llldb -lc++abi"; };
+    env = lib.optionalAttrs stdenv.hostPlatform.isDarwin { NIX_LDFLAGS = "-llldb -lc++abi"; };
 
     buildAndTestSubdir = "adapter";
 
@@ -90,7 +90,7 @@ let
 
     buildInputs =
       [ libsecret ]
-      ++ lib.optionals stdenv.isDarwin (
+      ++ lib.optionals stdenv.hostPlatform.isDarwin (
         with darwin.apple_sdk.frameworks;
         [
           Security
@@ -114,7 +114,7 @@ let
   # entitlement which nixpkgs' lldb-server does not yet provide; see
   # <https://github.com/NixOS/nixpkgs/pull/38624> for details
   lldbServer =
-    if stdenv.isDarwin then
+    if stdenv.hostPlatform.isDarwin then
       "/Applications/Xcode.app/Contents/SharedFrameworks/LLDB.framework/Versions/A/Resources/debugserver"
     else
       "${lldb.out}/bin/lldb-server";
@@ -150,7 +150,7 @@ stdenv.mkDerivation {
     ''
       cp -r ${nodeDeps}/lib/node_modules .
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       export HOME="$TMPDIR/home"
       mkdir $HOME
     '';
@@ -161,7 +161,7 @@ stdenv.mkDerivation {
   ];
   makeFlags = [ "vsix_bootstrap" ];
 
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export HOME=$TMPDIR
   '';
 
diff --git a/pkgs/applications/editors/vscode/generic.nix b/pkgs/applications/editors/vscode/generic.nix
index f2807a1b592d..defae3cf9617 100644
--- a/pkgs/applications/editors/vscode/generic.nix
+++ b/pkgs/applications/editors/vscode/generic.nix
@@ -157,12 +157,12 @@ in
   ];
 
   buildInputs = [ libsecret libXScrnSaver libxshmfence ]
-    ++ lib.optionals (!stdenv.isDarwin) [ alsa-lib at-spi2-atk libkrb5 mesa nss nspr systemd xorg.libxkbfile ];
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ alsa-lib at-spi2-atk libkrb5 mesa nss nspr systemd xorg.libxkbfile ];
 
-  runtimeDependencies = lib.optionals stdenv.isLinux [ (lib.getLib systemd) fontconfig.lib libdbusmenu wayland libsecret ];
+  runtimeDependencies = lib.optionals stdenv.hostPlatform.isLinux [ (lib.getLib systemd) fontconfig.lib libdbusmenu wayland libsecret ];
 
   nativeBuildInputs = [ unzip ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
     autoPatchelfHook
     asar
     copyDesktopItems
@@ -176,7 +176,7 @@ in
 
   installPhase = ''
     runHook preInstall
-  '' + (if stdenv.isDarwin then ''
+  '' + (if stdenv.hostPlatform.isDarwin then ''
     mkdir -p "$out/Applications/${longName}.app" "$out/bin"
     cp -r ./* "$out/Applications/${longName}.app"
     ln -s "$out/Applications/${longName}.app/Contents/Resources/app/bin/${sourceExecutableName}" "$out/bin/${executableName}"
@@ -205,7 +205,7 @@ in
   preFixup = ''
     gappsWrapperArgs+=(
         ${ # we cannot use runtimeDependencies otherwise libdbusmenu do not work on kde
-          lib.optionalString stdenv.isLinux
+          lib.optionalString stdenv.hostPlatform.isLinux
           "--prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [ libdbusmenu ]}"}
       # Add gio to PATH so that moving files to the trash works when not using a desktop environment
       --prefix PATH : ${glib.bin}/bin
@@ -216,7 +216,7 @@ in
 
   # See https://github.com/NixOS/nixpkgs/issues/49643#issuecomment-873853897
   # linux only because of https://github.com/NixOS/nixpkgs/issues/138729
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     # this is a fix for "save as root" functionality
     packed="resources/app/node_modules.asar"
     unpacked="resources/app/node_modules"
@@ -234,7 +234,7 @@ in
   '' + (
     let
       vscodeRipgrep =
-        if stdenv.isDarwin then
+        if stdenv.hostPlatform.isDarwin then
           "Contents/Resources/app/node_modules.asar.unpacked/@vscode/ripgrep/bin/rg"
         else
           "resources/app/node_modules/@vscode/ripgrep/bin/rg";
@@ -247,7 +247,7 @@ in
     ''
   );
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf \
       --add-needed ${libglvnd}/lib/libGLESv2.so.2 \
       --add-needed ${libglvnd}/lib/libGL.so.1 \
diff --git a/pkgs/applications/editors/vscode/vscode.nix b/pkgs/applications/editors/vscode/vscode.nix
index 3a2528cde7fd..35f6601d60be 100644
--- a/pkgs/applications/editors/vscode/vscode.nix
+++ b/pkgs/applications/editors/vscode/vscode.nix
@@ -10,9 +10,9 @@
 # documented in https://wiki.nixos.org/wiki/Visual_Studio_Code#Insiders_Build
 # On MacOS the insider binary is still called code instead of code-insiders as
 # of 2023-08-06.
-, sourceExecutableName ? "code" + lib.optionalString (isInsiders && stdenv.isLinux) "-insiders"
+, sourceExecutableName ? "code" + lib.optionalString (isInsiders && stdenv.hostPlatform.isLinux) "-insiders"
 , commandLineArgs ? ""
-, useVSCodeRipgrep ? stdenv.isDarwin
+, useVSCodeRipgrep ? stdenv.hostPlatform.isDarwin
 }:
 
 let
@@ -27,7 +27,7 @@ let
     armv7l-linux = "linux-armhf";
   }.${system} or throwSystem;
 
-  archive_fmt = if stdenv.isDarwin then "zip" else "tar.gz";
+  archive_fmt = if stdenv.hostPlatform.isDarwin then "zip" else "tar.gz";
 
   sha256 = {
     x86_64-linux = "0475kwa3ym14l9ggaf2hg4lcrc0lpi9vchzj4sgj4c3606l9i1aa";
@@ -79,7 +79,7 @@ in
     # Editing the `code` binary within the app bundle causes the bundle's signature
     # to be invalidated, which prevents launching starting with macOS Ventura, because VS Code is notarized.
     # See https://eclecticlight.co/2022/06/17/app-security-changes-coming-in-ventura/ for more information.
-    dontFixup = stdenv.isDarwin;
+    dontFixup = stdenv.hostPlatform.isDarwin;
 
     meta = with lib; {
       description = ''
diff --git a/pkgs/applications/editors/vscode/vscodium.nix b/pkgs/applications/editors/vscode/vscodium.nix
index 312e49e8d02b..54a1a98ad7c6 100644
--- a/pkgs/applications/editors/vscode/vscodium.nix
+++ b/pkgs/applications/editors/vscode/vscodium.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, callPackage, fetchurl, nixosTests, commandLineArgs ? "", useVSCodeRipgrep ? stdenv.isDarwin }:
+{ lib, stdenv, callPackage, fetchurl, nixosTests, commandLineArgs ? "", useVSCodeRipgrep ? stdenv.hostPlatform.isDarwin }:
 
 let
   inherit (stdenv.hostPlatform) system;
@@ -12,7 +12,7 @@ let
     armv7l-linux = "linux-armhf";
   }.${system} or throwSystem;
 
-  archive_fmt = if stdenv.isDarwin then "zip" else "tar.gz";
+  archive_fmt = if stdenv.hostPlatform.isDarwin then "zip" else "tar.gz";
 
   sha256 = {
     x86_64-linux = "14pqi5l7zbkhpsl8hd7mqss4xkqnxf0f0h5bs710iadpcscgpndf";
@@ -22,7 +22,7 @@ let
     armv7l-linux = "1rjv5c85ffy5szxhf71kjmvxiahyyvx2dl6183v5q7apv9pa64hj";
   }.${system} or throwSystem;
 
-  sourceRoot = lib.optionalString (!stdenv.isDarwin) ".";
+  sourceRoot = lib.optionalString (!stdenv.hostPlatform.isDarwin) ".";
 in
   callPackage ./generic.nix rec {
     inherit sourceRoot commandLineArgs useVSCodeRipgrep;
diff --git a/pkgs/applications/editors/vscode/with-extensions.nix b/pkgs/applications/editors/vscode/with-extensions.nix
index bbe5fec19d91..25c97f52d765 100644
--- a/pkgs/applications/editors/vscode/with-extensions.nix
+++ b/pkgs/applications/editors/vscode/with-extensions.nix
@@ -68,7 +68,7 @@ runCommand "${wrappedPkgName}-with-extensions-${wrappedPkgVersion}" {
   dontPatchELF = true;
   dontStrip = true;
   meta = vscode.meta;
-} (if stdenv.isDarwin then ''
+} (if stdenv.hostPlatform.isDarwin then ''
   mkdir -p $out/bin/
   mkdir -p "$out/Applications/${longName}.app/Contents/MacOS"
 
diff --git a/pkgs/applications/editors/wxhexeditor/default.nix b/pkgs/applications/editors/wxhexeditor/default.nix
index 23ef7a0ef567..eee370d174e0 100644
--- a/pkgs/applications/editors/wxhexeditor/default.nix
+++ b/pkgs/applications/editors/wxhexeditor/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = lib.optionals stdenv.cc.isClang [
     openmp
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ];
 
diff --git a/pkgs/applications/editors/xedit/default.nix b/pkgs/applications/editors/xedit/default.nix
index 6fa4a67dfd6b..eb8f2ee92592 100644
--- a/pkgs/applications/editors/xedit/default.nix
+++ b/pkgs/applications/editors/xedit/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   };
 
   # ./lisp/mathimp.c:493:10: error: implicitly declaring library function 'finite' with type 'int (double)'
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     for i in $(find . -type f -name "*.c"); do
       substituteInPlace $i --replace "finite" "isfinite"
     done
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ shamilton ];
     platforms = platforms.unix;
     # never built on aarch64-darwin, x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "xedit";
   };
 }
diff --git a/pkgs/applications/editors/xmlcopyeditor/default.nix b/pkgs/applications/editors/xmlcopyeditor/default.nix
index fe3a12a37c20..0c58d35042ae 100644
--- a/pkgs/applications/editors/xmlcopyeditor/default.nix
+++ b/pkgs/applications/editors/xmlcopyeditor/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
     pcre2
     wxGTK32
     xercesc
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ];
 
diff --git a/pkgs/applications/editors/zee/default.nix b/pkgs/applications/editors/zee/default.nix
index 38ca48ee4056..cea97686072c 100644
--- a/pkgs/applications/editors/zee/default.nix
+++ b/pkgs/applications/editors/zee/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optional stdenv.isDarwin Security;
+  buildInputs = [ openssl ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # disable downloading and building the tree-sitter grammars at build time
   # grammars can be configured in a config file and installed with `zee --build`
diff --git a/pkgs/applications/emulators/86box/default.nix b/pkgs/applications/emulators/86box/default.nix
index f4e1827c8e62..ac306cf5cdec 100644
--- a/pkgs/applications/emulators/86box/default.nix
+++ b/pkgs/applications/emulators/86box/default.nix
@@ -33,7 +33,7 @@
   enableDynarec ? with stdenv.hostPlatform; isx86 || isAarch,
   enableNewDynarec ? enableDynarec && stdenv.hostPlatform.isAarch,
   enableVncRenderer ? false,
-  enableWayland ? stdenv.isLinux,
+  enableWayland ? stdenv.hostPlatform.isLinux,
   unfreeEnableDiscord ? false,
   unfreeEnableRoms ? false,
 }:
@@ -88,20 +88,20 @@ stdenv.mkDerivation (finalAttrs: {
       libopus.dev
       libmpg123.dev
     ]
-    ++ lib.optional stdenv.isLinux alsa-lib
+    ++ lib.optional stdenv.hostPlatform.isLinux alsa-lib
     ++ lib.optional enableWayland wayland
     ++ lib.optional enableVncRenderer libvncserver
-    ++ lib.optional stdenv.isDarwin darwin.apple_sdk_11_0.libs.xpc;
+    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk_11_0.libs.xpc;
 
   cmakeFlags =
-    lib.optional stdenv.isDarwin "-DCMAKE_MACOSX_BUNDLE=OFF"
+    lib.optional stdenv.hostPlatform.isDarwin "-DCMAKE_MACOSX_BUNDLE=OFF"
     ++ lib.optional enableNewDynarec "-DNEW_DYNAREC=ON"
     ++ lib.optional enableVncRenderer "-DVNC=ON"
     ++ lib.optional (!enableDynarec) "-DDYNAREC=OFF"
     ++ lib.optional (!unfreeEnableDiscord) "-DDISCORD=OFF";
 
   postInstall =
-    lib.optionalString stdenv.isLinux ''
+    lib.optionalString stdenv.hostPlatform.isLinux ''
       install -Dm644 -t $out/share/applications $src/src/unix/assets/net.86box.86Box.desktop
 
       for size in 48 64 72 96 128 192 256 512; do
@@ -129,7 +129,7 @@ stdenv.mkDerivation (finalAttrs: {
   preFixup =
     let
       libPath = lib.makeLibraryPath ([ libpcap ] ++ lib.optional unfreeEnableDiscord discord-gamesdk);
-      libPathVar = if stdenv.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
+      libPathVar = if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
     in
     ''
       makeWrapperArgs+=(--prefix ${libPathVar} : "${libPath}")
diff --git a/pkgs/applications/emulators/bsnes/ares/default.nix b/pkgs/applications/emulators/bsnes/ares/default.nix
index f7fd332c7a33..df08235529e5 100644
--- a/pkgs/applications/emulators/bsnes/ares/default.nix
+++ b/pkgs/applications/emulators/bsnes/ares/default.nix
@@ -44,14 +44,14 @@ stdenv.mkDerivation (finalAttrs: {
     pkg-config
     which
     wrapGAppsHook3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libicns
   ];
 
   buildInputs = [
     SDL2
     libao
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     gtk3
     gtksourceview3
@@ -62,7 +62,7 @@ stdenv.mkDerivation (finalAttrs: {
     libpulseaudio
     openal
     udev
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Cocoa
     darwin.apple_sdk_11_0.frameworks.OpenAL
   ];
@@ -71,9 +71,9 @@ stdenv.mkDerivation (finalAttrs: {
 
   enableParallelBuilding = true;
 
-  makeFlags = lib.optionals stdenv.isLinux [
+  makeFlags = lib.optionals stdenv.hostPlatform.isLinux [
     "hiro=gtk3"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "hiro=cocoa"
     "lto=false"
     "vulkan=false"
@@ -83,7 +83,7 @@ stdenv.mkDerivation (finalAttrs: {
     "prefix=$(out)"
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-mmacosx-version-min=10.14";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-mmacosx-version-min=10.14";
 
   meta = {
     homepage = "https://ares-emu.net";
@@ -92,7 +92,7 @@ stdenv.mkDerivation (finalAttrs: {
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ Madouura AndersonTorres ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
 # TODO: select between Qt and GTK3
diff --git a/pkgs/applications/emulators/bsnes/bsnes-hd/default.nix b/pkgs/applications/emulators/bsnes/bsnes-hd/default.nix
index 354437e7c7b0..046192df920f 100644
--- a/pkgs/applications/emulators/bsnes/bsnes-hd/default.nix
+++ b/pkgs/applications/emulators/bsnes/bsnes-hd/default.nix
@@ -47,26 +47,26 @@ stdenv.mkDerivation {
   ];
 
   nativeBuildInputs = [ pkg-config ]
-    ++ lib.optionals stdenv.isLinux [ wrapGAppsHook3 ]
-    ++ lib.optionals stdenv.isDarwin [ libicns makeWrapper ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ wrapGAppsHook3 ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libicns makeWrapper ];
 
   buildInputs = [ SDL2 libao ]
-    ++ lib.optionals stdenv.isLinux [ libX11 libXv udev gtk3 gtksourceview3 alsa-lib openal libpulseaudio ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa OpenAL ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libX11 libXv udev gtk3 gtksourceview3 alsa-lib openal libpulseaudio ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa OpenAL ];
 
   enableParallelBuilding = true;
 
   makeFlags = [ "-C" "bsnes" "prefix=$(out)" ]
-    ++ lib.optionals stdenv.isLinux [ "hiro=gtk3" ]
-    ++ lib.optionals stdenv.isDarwin [ "hiro=cocoa" ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ "hiro=gtk3" ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "hiro=cocoa" ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/bin
     makeWrapper $out/{Applications/bsnes.app/Contents/MacOS,bin}/bsnes
   '';
 
   # https://github.com/bsnes-emu/bsnes/issues/107
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     gappsWrapperArgs+=(
       --prefix GDK_BACKEND : x11
     )
diff --git a/pkgs/applications/emulators/bsnes/higan/default.nix b/pkgs/applications/emulators/bsnes/higan/default.nix
index 17700859ca3a..3eb9a9a310ec 100644
--- a/pkgs/applications/emulators/bsnes/higan/default.nix
+++ b/pkgs/applications/emulators/bsnes/higan/default.nix
@@ -33,14 +33,14 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [
     pkg-config
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libicns
   ];
 
   buildInputs = [
     SDL2
     libao
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     gtk3
     gtksourceview3
@@ -52,7 +52,7 @@ stdenv.mkDerivation (finalAttrs: {
     openal
     udev
   ]
-  ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     Carbon
     Cocoa
     OpenAL
@@ -72,13 +72,13 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildPhase = let
     platform =
-      if stdenv.isLinux
+      if stdenv.hostPlatform.isLinux
       then "linux"
-      else if stdenv.isDarwin
+      else if stdenv.hostPlatform.isDarwin
       then "macos"
-      else if stdenv.isBSD
+      else if stdenv.hostPlatform.isBSD
       then "bsd"
-      else if stdenv.isWindows
+      else if stdenv.hostPlatform.isWindows
       then "windows"
       else throw "Unknown platform for higan: ${stdenv.hostPlatform.system}";
   in ''
@@ -105,7 +105,7 @@ stdenv.mkDerivation (finalAttrs: {
   installPhase = ''
     runHook preInstall
 
-  '' + (if stdenv.isDarwin then ''
+  '' + (if stdenv.hostPlatform.isDarwin then ''
     mkdir ${placeholder "out"}
     mv higan/out/higan.app ${placeholder "out"}/
     mv icarus/out/icarus.app ${placeholder "out"}/
@@ -134,7 +134,7 @@ stdenv.mkDerivation (finalAttrs: {
     # we create a first-run script to populate
     # $HOME with all the stuff needed at runtime
     let
-      dest = if stdenv.isDarwin
+      dest = if stdenv.hostPlatform.isDarwin
            then "\\$HOME/Library/Application Support/higan"
            else "\\$HOME/higan";
     in ''
@@ -171,7 +171,7 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ AndersonTorres ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
 # TODO: select between Qt and GTK3
diff --git a/pkgs/applications/emulators/dolphin-emu/default.nix b/pkgs/applications/emulators/dolphin-emu/default.nix
index 123ca313ec85..91ad4b876eb9 100644
--- a/pkgs/applications/emulators/dolphin-emu/default.nix
+++ b/pkgs/applications/emulators/dolphin-emu/default.nix
@@ -71,7 +71,7 @@ stdenv.mkDerivation (finalAttrs: {
     cmake
     pkg-config
     wrapQtAppsHook
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     xcbuild # for plutil
   ];
 
@@ -104,7 +104,7 @@ stdenv.mkDerivation (finalAttrs: {
     xz
     # Causes linker errors with minizip-ng, prefer vendored. Possible reason why: https://github.com/dolphin-emu/dolphin/pull/12070#issuecomment-1677311838
     #zlib-ng
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     bluez
     libevdev
@@ -115,7 +115,7 @@ stdenv.mkDerivation (finalAttrs: {
     #mgba # Derivation doesn't support Darwin
     udev
     vulkan-loader
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreBluetooth
     ForceFeedback
     IOBluetooth
@@ -130,7 +130,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-DDOLPHIN_WC_REVISION=${finalAttrs.src.rev}"
     "-DDOLPHIN_WC_DESCRIBE=${finalAttrs.version}"
     "-DDOLPHIN_WC_BRANCH=master"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DOSX_USE_DEFAULT_SEARCH_PATH=True"
     "-DUSE_BUNDLED_MOLTENVK=OFF"
     "-DMACOS_CODE_SIGNING=OFF"
@@ -141,7 +141,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-DENABLE_AUTOUPDATE=OFF"
   ];
 
-  qtWrapperArgs = lib.optionals stdenv.isLinux [
+  qtWrapperArgs = lib.optionals stdenv.hostPlatform.isLinux [
     "--prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [ vulkan-loader ]}"
     # https://bugs.dolphin-emu.org/issues/11807
     # The .desktop file should already set this, but Dolphin may be launched in other ways
diff --git a/pkgs/applications/emulators/dolphin-emu/primehack.nix b/pkgs/applications/emulators/dolphin-emu/primehack.nix
index 6a2727478389..c35700856b60 100644
--- a/pkgs/applications/emulators/dolphin-emu/primehack.nix
+++ b/pkgs/applications/emulators/dolphin-emu/primehack.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     pkg-config
     cmake
-  ] ++ lib.optional stdenv.isLinux wrapQtAppsHook;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux wrapQtAppsHook;
 
   buildInputs = [
     curl
@@ -93,13 +93,13 @@ stdenv.mkDerivation rec {
     fmt
     xz
     qtbase
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     bluez
     udev
     libevdev
     alsa-lib
     vulkan-loader
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreBluetooth
     OpenGL
     ForceFeedback
@@ -109,11 +109,11 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-DUSE_SHARED_ENET=ON"
     "-DENABLE_LTO=ON"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DOSX_USE_DEFAULT_SEARCH_PATH=True"
   ];
 
-  qtWrapperArgs = lib.optionals stdenv.isLinux [
+  qtWrapperArgs = lib.optionals stdenv.hostPlatform.isLinux [
     "--prefix LD_LIBRARY_PATH : ${vulkan-loader}/lib"
     # https://bugs.dolphin-emu.org/issues/11807
     # The .desktop file should already set this, but Dolphin may be launched in other ways
@@ -123,7 +123,7 @@ stdenv.mkDerivation rec {
   # - Allow Dolphin to use nix-provided libraries instead of building them
   postPatch = ''
     substituteInPlace CMakeLists.txt --replace 'DISTRIBUTOR "None"' 'DISTRIBUTOR "NixOS"'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace CMakeLists.txt --replace 'if(NOT APPLE)' 'if(true)'
     substituteInPlace CMakeLists.txt --replace 'if(LIBUSB_FOUND AND NOT APPLE)' 'if(LIBUSB_FOUND)'
   '';
@@ -144,7 +144,7 @@ stdenv.mkDerivation rec {
     description = "Gamecube/Wii/Triforce emulator for x86_64 and ARMv8";
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ Madouura ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     platforms = platforms.unix;
   };
 }
diff --git a/pkgs/applications/emulators/dosbox/default.nix b/pkgs/applications/emulators/dosbox/default.nix
index 2a1171ccf3b7..50805ae20dbb 100644
--- a/pkgs/applications/emulators/dosbox/default.nix
+++ b/pkgs/applications/emulators/dosbox/default.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
 
   hardeningDisable = [ "format" ];
 
-  configureFlags = lib.optional stdenv.isDarwin "--disable-sdltest";
+  configureFlags = lib.optional stdenv.hostPlatform.isDarwin "--disable-sdltest";
 
   desktopItems = [
     (makeDesktopItem {
diff --git a/pkgs/applications/emulators/goldberg-emu/default.nix b/pkgs/applications/emulators/goldberg-emu/default.nix
index 8b1e92b5963a..e165a36b317b 100644
--- a/pkgs/applications/emulators/goldberg-emu/default.nix
+++ b/pkgs/applications/emulators/goldberg-emu/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://gitlab.com/Mr_Goldberg/goldberg_emulator";
     changelog = "https://gitlab.com/Mr_Goldberg/goldberg_emulator/-/releases";
     description = "Program that emulates steam online features";
diff --git a/pkgs/applications/emulators/mame/default.nix b/pkgs/applications/emulators/mame/default.nix
index fae7a0d3fcf9..25018c56aa66 100644
--- a/pkgs/applications/emulators/mame/default.nix
+++ b/pkgs/applications/emulators/mame/default.nix
@@ -90,8 +90,8 @@ stdenv.mkDerivation rec {
     sqlite
     qtbase
   ]
-  ++ lib.optionals stdenv.isLinux [ alsa-lib libpulseaudio libXinerama libXi fontconfig ]
-  ++ lib.optionals stdenv.isDarwin [ libpcap CoreAudioKit ForceFeedback ];
+  ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib libpulseaudio libXinerama libXi fontconfig ]
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ libpcap CoreAudioKit ForceFeedback ];
 
   nativeBuildInputs = [
     copyDesktopItems
@@ -195,7 +195,7 @@ stdenv.mkDerivation rec {
     license = with licenses; [ bsd3 gpl2Plus ];
     maintainers = with maintainers; [ thiagokokada ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "mame";
   };
 }
diff --git a/pkgs/applications/emulators/retroarch/cores.nix b/pkgs/applications/emulators/retroarch/cores.nix
index 532109eefa6d..18c510b8465b 100644
--- a/pkgs/applications/emulators/retroarch/cores.nix
+++ b/pkgs/applications/emulators/retroarch/cores.nix
@@ -267,7 +267,7 @@ in
       let
         # linux = bsd
         # https://github.com/DerKoun/bsnes-hd/blob/f0b6cf34e9780d53516977ed2de64137a8bcc3c5/bsnes/GNUmakefile#L37
-        platform = if stdenv.isDarwin then "macos" else "linux";
+        platform = if stdenv.hostPlatform.isDarwin then "macos" else "linux";
       in
       [
         "-C"
diff --git a/pkgs/applications/emulators/retroarch/default.nix b/pkgs/applications/emulators/retroarch/default.nix
index 83cb0b2bbc63..b23a5e3c9bb3 100644
--- a/pkgs/applications/emulators/retroarch/default.nix
+++ b/pkgs/applications/emulators/retroarch/default.nix
@@ -2,9 +2,9 @@
 , stdenv
 , nixosTests
 , enableNvidiaCgToolkit ? false
-, withGamemode ? stdenv.isLinux
-, withVulkan ? stdenv.isLinux
-, withWayland ? stdenv.isLinux
+, withGamemode ? stdenv.hostPlatform.isLinux
+, withVulkan ? stdenv.hostPlatform.isLinux
+, withWayland ? stdenv.hostPlatform.isLinux
 , alsa-lib
 , dbus
 , fetchFromGitHub
@@ -77,7 +77,7 @@ stdenv.mkDerivation rec {
   lib.optional enableNvidiaCgToolkit nvidia_cg_toolkit ++
   lib.optional withVulkan vulkan-loader ++
   lib.optional withWayland wayland ++
-  lib.optionals stdenv.isLinux [
+  lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     dbus
     libX11
@@ -103,7 +103,7 @@ stdenv.mkDerivation rec {
     "--disable-update_assets"
     "--disable-update_core_info"
   ] ++
-  lib.optionals stdenv.isLinux [
+  lib.optionals stdenv.hostPlatform.isLinux [
     "--enable-dbus"
     "--enable-egl"
     "--enable-kms"
@@ -142,6 +142,6 @@ stdenv.mkDerivation rec {
     # https://docs.libretro.com/development/retroarch/compilation/osx/
     # and
     # https://github.com/libretro/RetroArch/blob/71eb74d256cb4dc5b8b43991aec74980547c5069/.gitlab-ci.yml#L330
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/emulators/ripes/default.nix b/pkgs/applications/emulators/ripes/default.nix
index 92b7aca0a144..312c25a02007 100644
--- a/pkgs/applications/emulators/ripes/default.nix
+++ b/pkgs/applications/emulators/ripes/default.nix
@@ -39,11 +39,11 @@ stdenv.mkDerivation rec {
 
   installPhase = ''
     runHook preInstall
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     cp -r Ripes.app $out/Applications/
     makeBinaryWrapper $out/Applications/Ripes.app/Contents/MacOS/Ripes $out/bin/Ripes
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     install -D Ripes $out/bin/Ripes
   '' + ''
     cp -r ${src}/appdir/usr/share $out/share
diff --git a/pkgs/applications/emulators/ruffle/default.nix b/pkgs/applications/emulators/ruffle/default.nix
index 481b5ec86654..55b2ce67fc9b 100644
--- a/pkgs/applications/emulators/ruffle/default.nix
+++ b/pkgs/applications/emulators/ruffle/default.nix
@@ -38,7 +38,7 @@ rustPlatform.buildRustPackage {
 
   nativeBuildInputs =
     [ jre_minimal ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       glib
       gsettings-desktop-schemas
       makeWrapper
@@ -46,10 +46,10 @@ rustPlatform.buildRustPackage {
       python3
       wrapGAppsHook3
     ]
-    ++ lib.optionals stdenv.isDarwin [ rustPlatform.bindgenHook ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ rustPlatform.bindgenHook ];
 
   buildInputs =
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       alsa-lib
       cairo
       gtk3
@@ -64,11 +64,11 @@ rustPlatform.buildRustPackage {
       vulkan-loader
       udev
     ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.AppKit ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.AppKit ];
 
   dontWrapGApps = true;
 
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf $out/bin/ruffle_desktop \
       --add-needed libxkbcommon-x11.so \
       --add-needed libwayland-client.so \
@@ -80,7 +80,7 @@ rustPlatform.buildRustPackage {
       # This name is too generic
       mv $out/bin/exporter $out/bin/ruffle_exporter
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       vulkanWrapperArgs+=(
         --prefix LD_LIBRARY_PATH ':' ${vulkan-loader}/lib
       )
diff --git a/pkgs/applications/emulators/tamatool/default.nix b/pkgs/applications/emulators/tamatool/default.nix
index 04e5452bf72d..82cd8e9a2528 100644
--- a/pkgs/applications/emulators/tamatool/default.nix
+++ b/pkgs/applications/emulators/tamatool/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation (finalAttrs: {
     libpng
     SDL2
     SDL2_image
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
   ];
 
diff --git a/pkgs/applications/emulators/wine/base.nix b/pkgs/applications/emulators/wine/base.nix
index dccf67a7a9bb..cff069a2e75c 100644
--- a/pkgs/applications/emulators/wine/base.nix
+++ b/pkgs/applications/emulators/wine/base.nix
@@ -23,7 +23,7 @@ let
     };
   } ./setup-hook-darwin.sh;
 
-  darwinFrameworks = lib.optionals stdenv.isDarwin (
+  darwinFrameworks = lib.optionals stdenv.hostPlatform.isDarwin (
     toBuildInputs pkgArches (pkgs: with pkgs.buildPackages.darwin.apple_sdk.frameworks; [
       CoreServices Foundation ForceFeedback AppKit OpenGL IOKit DiskArbitration PCSC Security
       ApplicationServices AudioToolbox CoreAudio AudioUnit CoreMIDI OpenCL Cocoa Carbon
@@ -40,7 +40,7 @@ let
 in
 stdenv.mkDerivation (finalAttrs:
 lib.optionalAttrs (buildScript != null) { builder = buildScript; }
-// lib.optionalAttrs stdenv.isDarwin {
+// lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     postBuild = ''
       # The Wine preloader must _not_ be linked to any system libraries, but `NIX_LDFLAGS` will link
       # to libintl, libiconv, and CoreFoundation no matter what. Delete the one that was built and
@@ -68,12 +68,12 @@ lib.optionalAttrs (buildScript != null) { builder = buildScript; }
     pkg-config
   ]
   ++ lib.optionals supportFlags.mingwSupport (mingwGccs
-    ++ lib.optional stdenv.isDarwin setupHookDarwin);
+    ++ lib.optional stdenv.hostPlatform.isDarwin setupHookDarwin);
 
   buildInputs = toBuildInputs pkgArches (with supportFlags; (pkgs:
   [ pkgs.freetype pkgs.perl pkgs.libunwind ]
-  ++ lib.optional stdenv.isLinux         pkgs.libcap
-  ++ lib.optional stdenv.isDarwin        pkgs.libinotify-kqueue
+  ++ lib.optional stdenv.hostPlatform.isLinux         pkgs.libcap
+  ++ lib.optional stdenv.hostPlatform.isDarwin        pkgs.libinotify-kqueue
   ++ lib.optional cupsSupport            pkgs.cups
   ++ lib.optional gettextSupport         pkgs.gettext
   ++ lib.optional dbusSupport            pkgs.dbus
@@ -92,7 +92,7 @@ lib.optionalAttrs (buildScript != null) { builder = buildScript; }
   ++ lib.optional pulseaudioSupport      pkgs.libpulseaudio
   ++ lib.optional (xineramaSupport && x11Support) pkgs.xorg.libXinerama
   ++ lib.optional udevSupport            pkgs.udev
-  ++ lib.optional vulkanSupport          (if stdenv.isDarwin then moltenvk else pkgs.vulkan-loader)
+  ++ lib.optional vulkanSupport          (if stdenv.hostPlatform.isDarwin then moltenvk else pkgs.vulkan-loader)
   ++ lib.optional sdlSupport             pkgs.SDL2
   ++ lib.optional usbSupport             pkgs.libusb1
   ++ lib.optionals gstreamerSupport      (with pkgs.gst_all_1;
@@ -100,8 +100,8 @@ lib.optionalAttrs (buildScript != null) { builder = buildScript; }
   ++ lib.optionals gtkSupport    [ pkgs.gtk3 pkgs.glib ]
   ++ lib.optionals openclSupport [ pkgs.opencl-headers pkgs.ocl-icd ]
   ++ lib.optionals tlsSupport    [ pkgs.openssl pkgs.gnutls ]
-  ++ lib.optionals (openglSupport && !stdenv.isDarwin) [ pkgs.libGLU pkgs.libGL pkgs.mesa.osmesa pkgs.libdrm ]
-  ++ lib.optionals stdenv.isDarwin darwinFrameworks
+  ++ lib.optionals (openglSupport && !stdenv.hostPlatform.isDarwin) [ pkgs.libGLU pkgs.libGL pkgs.mesa.osmesa pkgs.libdrm ]
+  ++ lib.optionals stdenv.hostPlatform.isDarwin darwinFrameworks
   ++ lib.optionals (x11Support) (with pkgs.xorg; [
     libX11 libXcomposite libXcursor libXext libXfixes libXi libXrandr libXrender libXxf86vm
   ])
@@ -115,7 +115,7 @@ lib.optionalAttrs (buildScript != null) { builder = buildScript; }
   configureFlags = prevConfigFlags
     ++ lib.optionals supportFlags.waylandSupport [ "--with-wayland" ]
     ++ lib.optionals supportFlags.vulkanSupport [ "--with-vulkan" ]
-    ++ lib.optionals ((stdenv.isDarwin && !supportFlags.xineramaSupport) || !supportFlags.x11Support) [ "--without-x" ];
+    ++ lib.optionals ((stdenv.hostPlatform.isDarwin && !supportFlags.xineramaSupport) || !supportFlags.x11Support) [ "--without-x" ];
 
   # Wine locates a lot of libraries dynamically through dlopen().  Add
   # them to the RPATH so that the user doesn't have to set them in
diff --git a/pkgs/applications/emulators/wine/default.nix b/pkgs/applications/emulators/wine/default.nix
index 2c73ab48ad71..8c8ebdea5878 100644
--- a/pkgs/applications/emulators/wine/default.nix
+++ b/pkgs/applications/emulators/wine/default.nix
@@ -35,7 +35,7 @@
   vulkanSupport ? false,
   sdlSupport ? false,
   usbSupport ? false,
-  mingwSupport ? stdenv.isDarwin,
+  mingwSupport ? stdenv.hostPlatform.isDarwin,
   waylandSupport ? false,
   x11Support ? false,
   embedInstallers ? false, # The Mono and Gecko MSI installers
diff --git a/pkgs/applications/emulators/wine/staging.nix b/pkgs/applications/emulators/wine/staging.nix
index 4a9bfb6c3204..634964fb7533 100644
--- a/pkgs/applications/emulators/wine/staging.nix
+++ b/pkgs/applications/emulators/wine/staging.nix
@@ -8,7 +8,7 @@ let patch = (callPackage ./sources.nix {}).staging;
 in assert lib.versions.majorMinor wineUnstable.version == lib.versions.majorMinor patch.version;
 
 (wineUnstable.override { wineRelease = "staging"; }).overrideAttrs (self: {
-  buildInputs = build-inputs ([ "perl" "autoconf" "gitMinimal" ] ++ lib.optional stdenv.isLinux "util-linux") self.buildInputs;
+  buildInputs = build-inputs ([ "perl" "autoconf" "gitMinimal" ] ++ lib.optional stdenv.hostPlatform.isLinux "util-linux") self.buildInputs;
   nativeBuildInputs = [ autoconf hexdump perl python3 gitMinimal ] ++ self.nativeBuildInputs;
 
   prePatch = self.prePatch or "" + ''
diff --git a/pkgs/applications/file-managers/lf/default.nix b/pkgs/applications/file-managers/lf/default.nix
index 5e6c09b89c89..9bbe32fd298e 100644
--- a/pkgs/applications/file-managers/lf/default.nix
+++ b/pkgs/applications/file-managers/lf/default.nix
@@ -24,7 +24,7 @@ buildGoModule rec {
 
   # Force the use of the pure-go implementation of the os/user library.
   # Relevant issue: https://github.com/gokcehan/lf/issues/191
-  tags = lib.optionals (!stdenv.isDarwin) [ "osusergo" ];
+  tags = lib.optionals (!stdenv.hostPlatform.isDarwin) [ "osusergo" ];
 
   postInstall = ''
     install -D --mode=444 lf.desktop $out/share/applications/lf.desktop
diff --git a/pkgs/applications/file-managers/mc/default.nix b/pkgs/applications/file-managers/mc/default.nix
index fdc60a309313..1644da02ed2f 100644
--- a/pkgs/applications/file-managers/mc/default.nix
+++ b/pkgs/applications/file-managers/mc/default.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
     slang
     zip
   ] ++ lib.optionals x11Support [ libX11 ]
-    ++ lib.optionals (!stdenv.isDarwin) [ e2fsprogs gpm ];
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ e2fsprogs gpm ];
 
   enableParallelBuilding = true;
 
@@ -68,7 +68,7 @@ stdenv.mkDerivation rec {
       --replace /bin/rm ${coreutils}/bin/rm
   '';
 
-  postFixup = lib.optionalString ((!stdenv.isDarwin) && x11Support) ''
+  postFixup = lib.optionalString ((!stdenv.hostPlatform.isDarwin) && x11Support) ''
     # libX11.so is loaded dynamically so autopatch doesn't detect it
     patchelf \
       --add-needed ${libX11}/lib/libX11.so \
diff --git a/pkgs/applications/file-managers/projectable/default.nix b/pkgs/applications/file-managers/projectable/default.nix
index 207ea0d0ba0a..b296e6a7ff1c 100644
--- a/pkgs/applications/file-managers/projectable/default.nix
+++ b/pkgs/applications/file-managers/projectable/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
     libgit2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/applications/gis/gmt/default.nix b/pkgs/applications/gis/gmt/default.nix
index 3cc04e374440..092d1cb431d6 100644
--- a/pkgs/applications/gis/gmt/default.nix
+++ b/pkgs/applications/gis/gmt/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
 
   buildInputs = [ curl gdal netcdf pcre dcw-gmt gshhg-gmt ]
-    ++ (if stdenv.isDarwin then [
+    ++ (if stdenv.hostPlatform.isDarwin then [
       Accelerate
       CoreGraphics
       CoreVideo
diff --git a/pkgs/applications/gis/grass/default.nix b/pkgs/applications/gis/grass/default.nix
index 2e02c1d2da6a..68bbcb46b526 100644
--- a/pkgs/applications/gis/grass/default.nix
+++ b/pkgs/applications/gis/grass/default.nix
@@ -5,7 +5,7 @@
 , makeWrapper
 , wrapGAppsHook3
 
-, withOpenGL ? !stdenv.isDarwin
+, withOpenGL ? !stdenv.hostPlatform.isDarwin
 
 , bison
 , blas
@@ -87,7 +87,7 @@ stdenv.mkDerivation (finalAttrs: {
     zlib
     zstd
   ] ++ lib.optionals withOpenGL [ libGLU ]
-  ++ lib.optionals stdenv.isDarwin [ libiconv ]
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ]
   ++ lib.optionals stdenv.cc.isClang [ llvmPackages.openmp ];
 
   strictDeps = true;
@@ -117,14 +117,14 @@ stdenv.mkDerivation (finalAttrs: {
     "--without-odbc"
   ] ++ lib.optionals (! withOpenGL) [
     "--without-opengl"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--without-cairo"
     "--without-freetype"
     "--without-x"
   ];
 
   # Otherwise a very confusing "Can't load GDAL library" error
-  makeFlags = lib.optional stdenv.isDarwin "GDAL_DYNAMIC=";
+  makeFlags = lib.optional stdenv.hostPlatform.isDarwin "GDAL_DYNAMIC=";
 
   /* Ensures that the python script run at build time are actually executable;
    * otherwise, patchShebangs ignores them.  */
diff --git a/pkgs/applications/gis/spatialite-gui/default.nix b/pkgs/applications/gis/spatialite-gui/default.nix
index b33818e35486..a8bdedabaa37 100644
--- a/pkgs/applications/gis/spatialite-gui/default.nix
+++ b/pkgs/applications/gis/spatialite-gui/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ pkg-config ]
-    ++ lib.optional stdenv.isDarwin desktopToDarwinBundle;
+    ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   buildInputs = [
     curl
@@ -59,11 +59,11 @@ stdenv.mkDerivation rec {
     wxGTK
     xz
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [ Carbon Cocoa IOKit ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon Cocoa IOKit ];
 
   enableParallelBuilding = true;
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     rm -fr $out/share
   '';
 
diff --git a/pkgs/applications/gis/udig/default.nix b/pkgs/applications/gis/udig/default.nix
index 264445336cd3..04740f55b065 100644
--- a/pkgs/applications/gis/udig/default.nix
+++ b/pkgs/applications/gis/udig/default.nix
@@ -63,6 +63,6 @@ let
     '';
   };
 in
-if stdenv.isDarwin
+if stdenv.hostPlatform.isDarwin
 then darwin
 else linux
diff --git a/pkgs/applications/gis/whitebox-tools/default.nix b/pkgs/applications/gis/whitebox-tools/default.nix
index df2343d8813e..199595a65838 100644
--- a/pkgs/applications/gis/whitebox-tools/default.nix
+++ b/pkgs/applications/gis/whitebox-tools/default.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
     glib
     gtk3
     openssl
-  ] ++ lib.optional stdenv.isDarwin Security;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   nativeBuildInputs = [
     cmake
diff --git a/pkgs/applications/graphics/ImageMagick/6.x.nix b/pkgs/applications/graphics/ImageMagick/6.x.nix
index dac185e3d3d0..e0834055e716 100644
--- a/pkgs/applications/graphics/ImageMagick/6.x.nix
+++ b/pkgs/applications/graphics/ImageMagick/6.x.nix
@@ -78,7 +78,7 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optional openexrSupport openexr
     ++ lib.optional librsvgSupport librsvg
     ++ lib.optional openjpegSupport openjpeg
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       ApplicationServices
       Foundation
     ];
diff --git a/pkgs/applications/graphics/ImageMagick/default.nix b/pkgs/applications/graphics/ImageMagick/default.nix
index cd998be7019f..27abada54119 100644
--- a/pkgs/applications/graphics/ImageMagick/default.nix
+++ b/pkgs/applications/graphics/ImageMagick/default.nix
@@ -101,7 +101,7 @@ stdenv.mkDerivation (finalAttrs: {
       pango
     ]
     ++ lib.optional openjpegSupport openjpeg
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       ApplicationServices
       Foundation
     ];
diff --git a/pkgs/applications/graphics/antimony/default.nix b/pkgs/applications/graphics/antimony/default.nix
index d39961da9077..b55e6a8a5bb0 100644
--- a/pkgs/applications/graphics/antimony/default.nix
+++ b/pkgs/applications/graphics/antimony/default.nix
@@ -28,7 +28,7 @@ in
        sed -i "s,python3,${python3.executable}," CMakeLists.txt
     '';
 
-    postInstall = lib.optionalString stdenv.isLinux ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
       install -Dm644 $src/deploy/icon.svg $out/share/icons/hicolor/scalable/apps/antimony.svg
       install -Dm644 ${./mimetype.xml} $out/share/mime/packages/antimony.xml
     '';
diff --git a/pkgs/applications/graphics/artem/default.nix b/pkgs/applications/graphics/artem/default.nix
index 8b391f104d83..8f6d27b176a3 100644
--- a/pkgs/applications/graphics/artem/default.nix
+++ b/pkgs/applications/graphics/artem/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
     installShellFiles
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/applications/graphics/autotrace/default.nix b/pkgs/applications/graphics/autotrace/default.nix
index 30cf116fed14..82bba3c3fc53 100644
--- a/pkgs/applications/graphics/autotrace/default.nix
+++ b/pkgs/applications/graphics/autotrace/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     imagemagick
     libpng
     pstoedit
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/applications/graphics/azpainter/default.nix b/pkgs/applications/graphics/azpainter/default.nix
index 111e37711ef3..b1493b94ce67 100644
--- a/pkgs/applications/graphics/azpainter/default.nix
+++ b/pkgs/applications/graphics/azpainter/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
     freetype fontconfig
     libjpeg libpng libtiff libwebp
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   preBuild = ''
     cd build
diff --git a/pkgs/applications/graphics/c3d/default.nix b/pkgs/applications/graphics/c3d/default.nix
index cce015802302..dac235b9995e 100644
--- a/pkgs/applications/graphics/c3d/default.nix
+++ b/pkgs/applications/graphics/c3d/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ itk ] ++ lib.optional stdenv.isDarwin Cocoa;
+  buildInputs = [ itk ] ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 
   cmakeFlags = [ "-DCONVERT3D_USE_ITK_REMOTE_MODULES=OFF" ];
 
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
     license = licenses.gpl3;
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
     # /build/source/itkextras/OneDimensionalInPlaceAccumulateFilter.txx:312:10: fatal error: xmmintrin.h: No such file or directory
   };
 }
diff --git a/pkgs/applications/graphics/comical/default.nix b/pkgs/applications/graphics/comical/default.nix
index d8e869316619..f25259e5ebf4 100644
--- a/pkgs/applications/graphics/comical/default.nix
+++ b/pkgs/applications/graphics/comical/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     wxGTK32
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ];
 
diff --git a/pkgs/applications/graphics/curv/default.nix b/pkgs/applications/graphics/curv/default.nix
index 7113437245a3..f1f66784aa51 100644
--- a/pkgs/applications/graphics/curv/default.nix
+++ b/pkgs/applications/graphics/curv/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     xorg.libXi
     xorg.libXinerama
     xorg.libXrandr
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ilmbase
     llvmPackages.openmp
   ];
@@ -62,7 +62,7 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/curv3d/curv";
     license = licenses.asl20;
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ pbsds ];
     mainProgram = "curv";
   };
diff --git a/pkgs/applications/graphics/dia/default.nix b/pkgs/applications/graphics/dia/default.nix
index 534d1f5884b9..9977224dd761 100644
--- a/pkgs/applications/graphics/dia/default.nix
+++ b/pkgs/applications/graphics/dia/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation {
   lib.optionals withDocs [
     libxslt
   ] ++
-  lib.optionals stdenv.isDarwin [
+  lib.optionals stdenv.hostPlatform.isDarwin [
     gtk-mac-integration-gtk3
   ];
 
diff --git a/pkgs/applications/graphics/djview/default.nix b/pkgs/applications/graphics/djview/default.nix
index 3678b9760c81..99af85a12b8d 100644
--- a/pkgs/applications/graphics/djview/default.nix
+++ b/pkgs/applications/graphics/djview/default.nix
@@ -37,7 +37,7 @@ mkDerivation rec {
     qtbase
     xorg.libXt
     libtiff
-  ] ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.AGL;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.AGL;
 
   preConfigure = ''
     NOCONFIGURE=1 ./autogen.sh
@@ -49,10 +49,10 @@ mkDerivation rec {
     "--with-x"
     "--with-tiff"
     "--disable-nsdejavu" # 2023-11-14: modern browsers have dropped support for NPAPI
-  ] ++ lib.optional stdenv.isDarwin "--enable-mac";
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "--enable-mac";
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Portable DjVu viewer (Qt5) and browser (nsdejavu) plugin";
     mainProgram = "djview";
     homepage = "https://djvu.sourceforge.net/djview4.html";
diff --git a/pkgs/applications/graphics/drawio/default.nix b/pkgs/applications/graphics/drawio/default.nix
index 47ee1ebd43e4..d6b6bb8e9e60 100644
--- a/pkgs/applications/graphics/drawio/default.nix
+++ b/pkgs/applications/graphics/drawio/default.nix
@@ -39,9 +39,9 @@ stdenv.mkDerivation rec {
     makeWrapper
     nodejs
     yarn
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     copyDesktopItems
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     autoSignDarwinBinariesHook
   ];
 
@@ -62,15 +62,15 @@ stdenv.mkDerivation rec {
   buildPhase = ''
     runHook preBuild
 
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     cp -R ${electron.dist}/Electron.app Electron.app
     chmod -R u+w Electron.app
     export CSC_IDENTITY_AUTO_DISCOVERY=false
     sed -i "/afterSign/d" electron-builder-linux-mac.json
   '' + ''
     yarn --offline run electron-builder --dir \
-      ${lib.optionalString stdenv.isDarwin "--config electron-builder-linux-mac.json"} \
-      -c.electronDist=${if stdenv.isDarwin then "." else electron.dist} \
+      ${lib.optionalString stdenv.hostPlatform.isDarwin "--config electron-builder-linux-mac.json"} \
+      -c.electronDist=${if stdenv.hostPlatform.isDarwin then "." else electron.dist} \
       -c.electronVersion=${electron.version}
 
     runHook postBuild
@@ -79,13 +79,13 @@ stdenv.mkDerivation rec {
   installPhase = ''
     runHook preInstall
 
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications,bin}
     mv dist/mac*/draw.io.app $out/Applications
 
     # Symlinking `draw.io` doesn't work; seems to look for files in the wrong place.
     makeWrapper $out/Applications/draw.io.app/Contents/MacOS/draw.io $out/bin/drawio
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mkdir -p "$out/share/lib/drawio"
     cp -r dist/*-unpacked/{locales,resources{,.pak}} "$out/share/lib/drawio"
 
diff --git a/pkgs/applications/graphics/drawpile/default.nix b/pkgs/applications/graphics/drawpile/default.nix
index 3bdb37900de0..ad76e0e92b7c 100644
--- a/pkgs/applications/graphics/drawpile/default.nix
+++ b/pkgs/applications/graphics/drawpile/default.nix
@@ -107,7 +107,7 @@ in mkDerivation rec {
     license = lib.licenses.gpl3Plus;
     maintainers = with lib.maintainers; [ fgaz ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   } // lib.optionalAttrs buildServer {
     mainProgram = "drawpile-srv";
   } // lib.optionalAttrs buildClient {
diff --git a/pkgs/applications/graphics/emblem/default.nix b/pkgs/applications/graphics/emblem/default.nix
index 2b249d7e294e..c0f9046fa9c8 100644
--- a/pkgs/applications/graphics/emblem/default.nix
+++ b/pkgs/applications/graphics/emblem/default.nix
@@ -49,11 +49,11 @@ stdenv.mkDerivation rec {
   buildInputs = [
     libadwaita
     libxml2
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-Wno-error=incompatible-function-pointer-types"
   ]);
 
diff --git a/pkgs/applications/graphics/emulsion/default.nix b/pkgs/applications/graphics/emulsion/default.nix
index a57a33e11b51..0db2a75721ec 100644
--- a/pkgs/applications/graphics/emulsion/default.nix
+++ b/pkgs/applications/graphics/emulsion/default.nix
@@ -30,7 +30,7 @@ let
     libXrandr
     libXxf86vm
     libxcb
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libxkbcommon
     wayland
   ];
@@ -55,7 +55,7 @@ rustPlatform.buildRustPackage rec {
     python3
   ];
 
-  buildInputs = rpathLibs ++ lib.optionals stdenv.isDarwin [
+  buildInputs = rpathLibs ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     CoreGraphics
     CoreServices
@@ -63,7 +63,7 @@ rustPlatform.buildRustPackage rec {
     OpenGL
   ];
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --set-rpath "${lib.makeLibraryPath rpathLibs}" $out/bin/emulsion
   '';
 
diff --git a/pkgs/applications/graphics/epick/default.nix b/pkgs/applications/graphics/epick/default.nix
index ca93a5f579c9..939232197eeb 100644
--- a/pkgs/applications/graphics/epick/default.nix
+++ b/pkgs/applications/graphics/epick/default.nix
@@ -24,11 +24,11 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-OQZPOiMTpoWabxHa3TJG8L3zq8WxMeFttw8xggSXsMA=";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     expat
     fontconfig
     freetype
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
     xorg.libXcursor
     xorg.libXi
     xorg.libXrandr
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
   ];
 
@@ -46,7 +46,7 @@ rustPlatform.buildRustPackage rec {
     install -Dm444 assets/icon.png $out/share/icons/hicolor/48x48/apps/epick.png
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf $out/bin/epick --add-rpath ${lib.makeLibraryPath [ libGL ]}
   '';
 
diff --git a/pkgs/applications/graphics/evilpixie/default.nix b/pkgs/applications/graphics/evilpixie/default.nix
index fb397239849b..9c5c7e81c3a7 100644
--- a/pkgs/applications/graphics/evilpixie/default.nix
+++ b/pkgs/applications/graphics/evilpixie/default.nix
@@ -48,8 +48,8 @@ stdenv.mkDerivation (finalAttrs: {
     platforms = platforms.all;
     # Undefined symbols for architecture x86_64:
     # "_bundle_path", referenced from: App::SetupPaths() in src_app.cpp.o
-    broken = stdenv.isDarwin ||
+    broken = stdenv.hostPlatform.isDarwin ||
     # https://github.com/bcampbell/evilpixie/issues/28
-      stdenv.isAarch64;
+      stdenv.hostPlatform.isAarch64;
   };
 })
diff --git a/pkgs/applications/graphics/f3d/default.nix b/pkgs/applications/graphics/f3d/default.nix
index 5daaf0e10ef1..3ce409516249 100644
--- a/pkgs/applications/graphics/f3d/default.nix
+++ b/pkgs/applications/graphics/f3d/default.nix
@@ -15,7 +15,7 @@
 , opencascade-occt
 , assimp
 , fontconfig
-, withManual ? !stdenv.isDarwin
+, withManual ? !stdenv.hostPlatform.isDarwin
 , withPythonBinding ? false
 }:
 
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
     opencascade-occt
     assimp
     fontconfig
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
     OpenGL
   ] ++ lib.optionals withPythonBinding [
diff --git a/pkgs/applications/graphics/feh/default.nix b/pkgs/applications/graphics/feh/default.nix
index 56f4936ceff1..e7d144579afd 100644
--- a/pkgs/applications/graphics/feh/default.nix
+++ b/pkgs/applications/graphics/feh/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation (finalAttrs: {
   makeFlags = [
     "PREFIX=${placeholder "out"}"
     "exif=1"
-  ] ++ lib.optional stdenv.isDarwin "verscmp=0"
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "verscmp=0"
   ++ lib.optional enableAutoreload "inotify=1";
 
   installTargets = [ "install" ];
diff --git a/pkgs/applications/graphics/fstl/default.nix b/pkgs/applications/graphics/fstl/default.nix
index c3d1f5eb655e..f902776fb58b 100644
--- a/pkgs/applications/graphics/fstl/default.nix
+++ b/pkgs/applications/graphics/fstl/default.nix
@@ -6,7 +6,7 @@ mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  installPhase = lib.optionalString stdenv.isDarwin ''
+  installPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     runHook preInstall
 
     mkdir -p $out/Applications
diff --git a/pkgs/applications/graphics/gimp/default.nix b/pkgs/applications/graphics/gimp/default.nix
index 8faf717a147e..5270b708486d 100644
--- a/pkgs/applications/graphics/gimp/default.nix
+++ b/pkgs/applications/graphics/gimp/default.nix
@@ -95,7 +95,7 @@ in stdenv.mkDerivation (finalAttrs: {
     makeWrapper
     gtk-doc
     libxslt
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     desktopToDarwinBundle
   ];
 
@@ -135,11 +135,11 @@ in stdenv.mkDerivation (finalAttrs: {
     glib-networking
     libmypaint
     mypaint-brushes1
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Cocoa
     gtk-mac-integration-gtk2
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libgudev
   ] ++ lib.optionals withPython [
     python
@@ -168,7 +168,7 @@ in stdenv.mkDerivation (finalAttrs: {
   doCheck = true;
 
   env = {
-    NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-DGDK_OSX_BIG_SUR=16";
+    NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-DGDK_OSX_BIG_SUR=16";
 
     # Check if librsvg was built with --disable-pixbuf-loader.
     PKG_CONFIG_GDK_PIXBUF_2_0_GDK_PIXBUF_MODULEDIR = "${librsvg}/${gdk-pixbuf.moduleDir}";
diff --git a/pkgs/applications/graphics/gnome-obfuscate/default.nix b/pkgs/applications/graphics/gnome-obfuscate/default.nix
index 6d0a8a8436f3..db173f58b54e 100644
--- a/pkgs/applications/graphics/gnome-obfuscate/default.nix
+++ b/pkgs/applications/graphics/gnome-obfuscate/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-9lrxK2psdIPGsOC6p8T+3AGPrX6PjrK9mFirdJqBSMM=";
   };
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     # Set the location to gettext to ensure the nixpkgs one on Darwin instead of the vendored one.
     # The vendored gettext does not build with clang 16.
     GETTEXT_BIN_DIR = "${lib.getBin buildPackages.gettext}/bin";
@@ -63,7 +63,7 @@ stdenv.mkDerivation (finalAttrs: {
     gtk4
     gdk-pixbuf
     libadwaita
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Foundation
   ];
 
diff --git a/pkgs/applications/graphics/icon-library/default.nix b/pkgs/applications/graphics/icon-library/default.nix
index 8b2347f43818..2b2c3e19825a 100644
--- a/pkgs/applications/graphics/icon-library/default.nix
+++ b/pkgs/applications/graphics/icon-library/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-nWGTYoSa0/fxnD0Mb2132LkeB1oa/gj/oIXBbI+FDw8=";
   };
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     # Set the location to gettext to ensure the nixpkgs one on Darwin instead of the vendored one.
     # The vendored gettext does not build with clang 16.
     GETTEXT_BIN_DIR = "${lib.getBin buildPackages.gettext}/bin";
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
     gtk4
     gtksourceview5
     libadwaita
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/applications/graphics/imagej/default.nix b/pkgs/applications/graphics/imagej/default.nix
index 2398a61f2134..37fed43765ea 100644
--- a/pkgs/applications/graphics/imagej/default.nix
+++ b/pkgs/applications/graphics/imagej/default.nix
@@ -27,7 +27,7 @@ in stdenv.mkDerivation rec {
   buildInputs = [ glib ];
   dontWrapGApps = true;
 
-  desktopItems = lib.optionals stdenv.isLinux [
+  desktopItems = lib.optionals stdenv.hostPlatform.isLinux [
     (makeDesktopItem {
       name = "ImageJ";
       desktopName = "ImageJ";
@@ -56,7 +56,7 @@ in stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     makeWrapper ${jre}/bin/java $out/bin/imagej \
       ''${gappsWrapperArgs[@]} \
       --add-flags "-jar $out/share/java/ij.jar -ijpath $out/share"
diff --git a/pkgs/applications/graphics/imv/default.nix b/pkgs/applications/graphics/imv/default.nix
index 9c60f309e12a..178bdfcae3fb 100644
--- a/pkgs/applications/graphics/imv/default.nix
+++ b/pkgs/applications/graphics/imv/default.nix
@@ -32,7 +32,7 @@ let
   # default value of withWindowSystem
   withWindowSystem' =
          if withWindowSystem != null then withWindowSystem
-    else if stdenv.isLinux then "all"
+    else if stdenv.hostPlatform.isLinux then "all"
     else "x11";
 
   windowSystems = {
diff --git a/pkgs/applications/graphics/inkscape/default.nix b/pkgs/applications/graphics/inkscape/default.nix
index 81cd91ebb6b0..62f485ff916e 100644
--- a/pkgs/applications/graphics/inkscape/default.nix
+++ b/pkgs/applications/graphics/inkscape/default.nix
@@ -134,7 +134,7 @@ stdenv.mkDerivation rec {
   ] ++ (with perlPackages; [
     perl
     XMLParser
-  ]) ++ lib.optionals stdenv.isDarwin [
+  ]) ++ lib.optionals stdenv.hostPlatform.isDarwin [
     desktopToDarwinBundle
   ];
 
@@ -168,15 +168,15 @@ stdenv.mkDerivation rec {
     python3Env
     zlib
     libepoxy
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     gspell
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cairo
     gtk-mac-integration
   ];
 
   # Make sure PyXML modules can be found at run-time.
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     for f in $out/lib/inkscape/*.dylib; do
       ln -s $f $out/lib/$(basename $f)
     done
diff --git a/pkgs/applications/graphics/lorien/default.nix b/pkgs/applications/graphics/lorien/default.nix
index 8105e3682b59..1f86c6dd2ed0 100644
--- a/pkgs/applications/graphics/lorien/default.nix
+++ b/pkgs/applications/graphics/lorien/default.nix
@@ -27,8 +27,8 @@
 
 let
   preset =
-    if stdenv.isLinux then "Linux/X11"
-    else if stdenv.isDarwin then "Mac OSX"
+    if stdenv.hostPlatform.isLinux then "Linux/X11"
+    else if stdenv.hostPlatform.isDarwin then "Mac OSX"
     else throw "unsupported platform";
 in
 stdenv.mkDerivation rec {
diff --git a/pkgs/applications/graphics/menyoki/default.nix b/pkgs/applications/graphics/menyoki/default.nix
index 8d965fe7b129..e8ae4e7f2555 100644
--- a/pkgs/applications/graphics/menyoki/default.nix
+++ b/pkgs/applications/graphics/menyoki/default.nix
@@ -25,11 +25,11 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-NtXjlGkX8AzSw98xHPymzdnTipMIunyDbpSr4eVowa0=";
 
   nativeBuildInputs = [ installShellFiles ]
-    ++ lib.optional stdenv.isLinux pkg-config;
+    ++ lib.optional stdenv.hostPlatform.isLinux pkg-config;
 
   buildInputs = lib.optional withSixel libsixel
-    ++ lib.optionals stdenv.isLinux (with xorg; [ libX11 libXrandr ])
-    ++ lib.optional stdenv.isDarwin AppKit;
+    ++ lib.optionals stdenv.hostPlatform.isLinux (with xorg; [ libX11 libXrandr ])
+    ++ lib.optional stdenv.hostPlatform.isDarwin AppKit;
 
   buildNoDefaultFeatures = !withSki;
   buildFeatures = lib.optional withSixel "sixel";
diff --git a/pkgs/applications/graphics/oculante/default.nix b/pkgs/applications/graphics/oculante/default.nix
index c6f2b188770c..f2c7aa843dbc 100644
--- a/pkgs/applications/graphics/oculante/default.nix
+++ b/pkgs/applications/graphics/oculante/default.nix
@@ -44,7 +44,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
     fontconfig
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libGL
     libX11
     libXcursor
@@ -54,7 +54,7 @@ rustPlatform.buildRustPackage rec {
 
     libxkbcommon
     wayland
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.libobjc
   ];
 
@@ -71,7 +71,7 @@ rustPlatform.buildRustPackage rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Minimalistic crossplatform image viewer written in Rust";
     homepage = "https://github.com/woelper/oculante";
     changelog = "https://github.com/woelper/oculante/blob/${version}/CHANGELOG.md";
diff --git a/pkgs/applications/graphics/openscad/default.nix b/pkgs/applications/graphics/openscad/default.nix
index 9b29f6ddc94d..26e19eec33f8 100644
--- a/pkgs/applications/graphics/openscad/default.nix
+++ b/pkgs/applications/graphics/openscad/default.nix
@@ -26,7 +26,7 @@
 , mkDerivation
 , qtmacextras
 , qmake
-, spacenavSupport ? stdenv.isLinux, libspnav
+, spacenavSupport ? stdenv.hostPlatform.isLinux, libspnav
 , wayland
 , wayland-protocols
 , wrapGAppsHook3
@@ -66,8 +66,8 @@ mkDerivation rec {
     eigen boost glew opencsg cgal_4 mpfr gmp glib
     harfbuzz lib3mf libzip double-conversion freetype fontconfig
     qtbase qtmultimedia qscintilla cairo
-  ] ++ lib.optionals stdenv.isLinux [ libGLU libGL wayland wayland-protocols qtwayland ]
-    ++ lib.optional stdenv.isDarwin qtmacextras
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ libGLU libGL wayland wayland-protocols qtwayland ]
+    ++ lib.optional stdenv.hostPlatform.isDarwin qtmacextras
     ++ lib.optional spacenavSupport libspnav
   ;
 
@@ -88,7 +88,7 @@ mkDerivation rec {
     make objects/parser.cxx
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/Applications
     mv $out/bin/*.app $out/Applications
     rmdir $out/bin || true
diff --git a/pkgs/applications/graphics/ovito/default.nix b/pkgs/applications/graphics/ovito/default.nix
index 3af9566c375f..710460054586 100644
--- a/pkgs/applications/graphics/ovito/default.nix
+++ b/pkgs/applications/graphics/ovito/default.nix
@@ -48,7 +48,7 @@ mkDerivation rec {
     qtbase
     qtsvg
     qttools
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     VideoDecodeAcceleration
   ];
 
@@ -58,6 +58,6 @@ mkDerivation rec {
     homepage = "https://ovito.org";
     license = with licenses;  [ gpl3Only mit ];
     maintainers = with maintainers; [ twhitehead ];
-    broken = stdenv.isDarwin; # clang-11: error: no such file or directory: '$-DOVITO_COPYRIGHT_NOTICE=...
+    broken = stdenv.hostPlatform.isDarwin; # clang-11: error: no such file or directory: '$-DOVITO_COPYRIGHT_NOTICE=...
   };
 }
diff --git a/pkgs/applications/graphics/panotools/default.nix b/pkgs/applications/graphics/panotools/default.nix
index c7e7b7d07f5e..494fd093ac4a 100644
--- a/pkgs/applications/graphics/panotools/default.nix
+++ b/pkgs/applications/graphics/panotools/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation (finalAttrs: {
     libjpeg
     libpng
     libtiff
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Carbon
   ];
 
diff --git a/pkgs/applications/graphics/qosmic/default.nix b/pkgs/applications/graphics/qosmic/default.nix
index ebee900cf9d6..eab80b018ccc 100644
--- a/pkgs/applications/graphics/qosmic/default.nix
+++ b/pkgs/applications/graphics/qosmic/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace qosmic.pro \
       --replace "/share" "/Applications/qosmic.app/Contents/Resources" \
       --replace "/qosmic/scripts" "/scripts" \
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
     "CONFIG+=link_pkgconfig"
   ];
 
-  preInstall = lib.optionalString stdenv.isDarwin ''
+  preInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv qosmic.app $out/Applications
   '';
diff --git a/pkgs/applications/graphics/qvge/default.nix b/pkgs/applications/graphics/qvge/default.nix
index e7c6def43b91..ef4e17fcce81 100644
--- a/pkgs/applications/graphics/qvge/default.nix
+++ b/pkgs/applications/graphics/qvge/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ wrapQtAppsHook qmake ];
 
-  buildInputs = if stdenv.isDarwin then [ qtsvg ] else [ qtx11extras ];
+  buildInputs = if stdenv.hostPlatform.isDarwin then [ qtsvg ] else [ qtx11extras ];
 
   meta = with lib; {
     description = "Qt Visual Graph Editor";
diff --git a/pkgs/applications/graphics/rawtherapee/default.nix b/pkgs/applications/graphics/rawtherapee/default.nix
index aa7c9c84ac16..deb45b06d19f 100644
--- a/pkgs/applications/graphics/rawtherapee/default.nix
+++ b/pkgs/applications/graphics/rawtherapee/default.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation rec {
     cmake
     pkg-config
     wrapGAppsHook3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     makeWrapper
   ];
 
@@ -88,9 +88,9 @@ stdenv.mkDerivation rec {
     exiv2
     libraw
     libjxl
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libcanberra-gtk3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     gtk-mac-integration
   ];
 
@@ -99,7 +99,7 @@ stdenv.mkDerivation rec {
     "-DCACHE_NAME_SUFFIX=\"\""
     "-DWITH_SYSTEM_LIBRAW=\"ON\""
     "-DWITH_JXL=\"ON\""
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=${stdenv.hostPlatform.darwinMinVersion}"
   ];
 
@@ -110,7 +110,7 @@ stdenv.mkDerivation rec {
   ];
   env.CXXFLAGS = "-include cstdint"; # needed at least with gcc13 on aarch64-linux
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications/RawTherapee.app $out/bin
     cp -R Release $out/Applications/RawTherapee.app/Contents
     for f in $out/Applications/RawTherapee.app/Contents/MacOS/*; do
diff --git a/pkgs/applications/graphics/rx/default.nix b/pkgs/applications/graphics/rx/default.nix
index 5b7162299952..943f46fab649 100644
--- a/pkgs/applications/graphics/rx/default.nix
+++ b/pkgs/applications/graphics/rx/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ cmake pkg-config makeWrapper ];
 
-  buildInputs = lib.optionals stdenv.isLinux
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux
   (with xorg; [
     # glfw-sys dependencies:
     libX11 libXrandr libXinerama libXcursor libXi libXext
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
   # FIXME: GLFW (X11) requires DISPLAY env variable for all tests
   doCheck = false;
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     mkdir -p $out/share/applications
     cp $src/rx.desktop $out/share/applications
     wrapProgram $out/bin/rx --prefix LD_LIBRARY_PATH : ${libGL}/lib
diff --git a/pkgs/applications/graphics/sane/backends/brscan4/default.nix b/pkgs/applications/graphics/sane/backends/brscan4/default.nix
index ece80ef18a5b..f4c516ef5698 100644
--- a/pkgs/applications/graphics/sane/backends/brscan4/default.nix
+++ b/pkgs/applications/graphics/sane/backends/brscan4/default.nix
@@ -2,7 +2,7 @@
 let
   myPatchElf = file: ''
     patchelf --set-interpreter \
-      ${stdenv.cc.libc}/lib/ld-linux${lib.optionalString stdenv.is64bit "-x86-64"}.so.2 \
+      ${stdenv.cc.libc}/lib/ld-linux${lib.optionalString stdenv.hostPlatform.is64bit "-x86-64"}.so.2 \
       ${file}
   '';
 
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     mkdir -p $out/$PATH_TO_BRSCAN4
     cp -rp $PATH_TO_BRSCAN4/* $out/$PATH_TO_BRSCAN4
     mkdir -p $out/lib/sane
-    cp -rp usr/lib${lib.optionalString stdenv.is64bit "64"}/sane/* $out/lib/sane
+    cp -rp usr/lib${lib.optionalString stdenv.hostPlatform.is64bit "64"}/sane/* $out/lib/sane
 
     # Symbolic links were absolute. Fix them so that they point to $out.
     pushd "$out/lib/sane" > /dev/null
diff --git a/pkgs/applications/graphics/sane/backends/brscan5/default.nix b/pkgs/applications/graphics/sane/backends/brscan5/default.nix
index b816eb71d27c..91be20f3abbc 100644
--- a/pkgs/applications/graphics/sane/backends/brscan5/default.nix
+++ b/pkgs/applications/graphics/sane/backends/brscan5/default.nix
@@ -2,7 +2,7 @@
 let
   myPatchElf = file: ''
     patchelf --set-interpreter \
-      ${stdenv.cc.libc}/lib/ld-linux${lib.optionalString stdenv.is64bit "-x86-64"}.so.2 \
+      ${stdenv.cc.libc}/lib/ld-linux${lib.optionalString stdenv.hostPlatform.is64bit "-x86-64"}.so.2 \
       ${file}
   '';
   system = stdenv.hostPlatform.system;
diff --git a/pkgs/applications/graphics/sane/backends/default.nix b/pkgs/applications/graphics/sane/backends/default.nix
index 1581b2f5b7b2..55fbc9a3616a 100644
--- a/pkgs/applications/graphics/sane/backends/default.nix
+++ b/pkgs/applications/graphics/sane/backends/default.nix
@@ -99,7 +99,7 @@ stdenv.mkDerivation rec {
     libxml2
     poppler
     gawk
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libieee1284
     libv4l
     net-snmp
diff --git a/pkgs/applications/graphics/symbolic-preview/default.nix b/pkgs/applications/graphics/symbolic-preview/default.nix
index 5d8ef439f013..46f654b95600 100644
--- a/pkgs/applications/graphics/symbolic-preview/default.nix
+++ b/pkgs/applications/graphics/symbolic-preview/default.nix
@@ -25,6 +25,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Plus;
     platforms = platforms.unix;
     # never built on aarch64-darwin, x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/graphics/synfigstudio/default.nix b/pkgs/applications/graphics/synfigstudio/default.nix
index 3c83be511976..e19da3fa15fe 100644
--- a/pkgs/applications/graphics/synfigstudio/default.nix
+++ b/pkgs/applications/graphics/synfigstudio/default.nix
@@ -99,7 +99,7 @@ let
       fribidi
       openexr
       fftw
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Foundation
     ];
   };
diff --git a/pkgs/applications/graphics/tesseract/tesseract5.nix b/pkgs/applications/graphics/tesseract/tesseract5.nix
index 16899aea978b..a8563a09e4c0 100644
--- a/pkgs/applications/graphics/tesseract/tesseract5.nix
+++ b/pkgs/applications/graphics/tesseract/tesseract5.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
     icu
     pango
     opencl-headers
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Accelerate
     CoreGraphics
     CoreVideo
diff --git a/pkgs/applications/graphics/tev/default.nix b/pkgs/applications/graphics/tev/default.nix
index 6ab953020c60..e026db40e8ed 100644
--- a/pkgs/applications/graphics/tev/default.nix
+++ b/pkgs/applications/graphics/tev/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
     changelog = "https://github.com/Tom94/tev/releases/tag/v${version}";
     license = licenses.bsd3;
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # needs apple frameworks + SDK fix? see #205247
+    broken = stdenv.hostPlatform.isDarwin; # needs apple frameworks + SDK fix? see #205247
     maintainers = [ ];
   };
 }
diff --git a/pkgs/applications/graphics/vengi-tools/default.nix b/pkgs/applications/graphics/vengi-tools/default.nix
index 4470ccfec421..be14ad6c63e9 100644
--- a/pkgs/applications/graphics/vengi-tools/default.nix
+++ b/pkgs/applications/graphics/vengi-tools/default.nix
@@ -67,12 +67,12 @@ stdenv.mkDerivation (finalAttrs: {
     lzfse
     SDL2
     SDL2_mixer
-  ] ++ lib.optional stdenv.isLinux wayland-protocols
-    ++ lib.optionals stdenv.isDarwin [ Carbon CoreServices OpenCL ]
-    ++ lib.optional (!stdenv.isDarwin) opencl-headers;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux wayland-protocols
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon CoreServices OpenCL ]
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) opencl-headers;
 
   cmakeFlags =
-    lib.optional stdenv.isDarwin "-DCORESERVICES_LIB=${CoreServices}";
+    lib.optional stdenv.hostPlatform.isDarwin "-DCORESERVICES_LIB=${CoreServices}";
 
   # error: "The plain signature for target_link_libraries has already been used"
   doCheck = false;
@@ -86,7 +86,7 @@ stdenv.mkDerivation (finalAttrs: {
   # one.
   # This is not needed on darwin, since on that platform data files are saved
   # in *.app/Contents/Resources/ too, and are picked up automatically.
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     for prog in $out/bin/*; do
       wrapProgram "$prog" \
         --set CORE_PATH $out/share/$(basename "$prog")/
@@ -113,6 +113,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = [ licenses.mit licenses.cc-by-sa-30 ];
     maintainers = with maintainers; [ fgaz ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/applications/graphics/vimiv-qt/default.nix b/pkgs/applications/graphics/vimiv-qt/default.nix
index 83bbbecdc65b..75a0b88fba4e 100644
--- a/pkgs/applications/graphics/vimiv-qt/default.nix
+++ b/pkgs/applications/graphics/vimiv-qt/default.nix
@@ -21,7 +21,7 @@ python3.pkgs.buildPythonApplication rec {
 
   propagatedBuildInputs = with python3.pkgs; [ pyqt5 py3exiv2 ];
 
-  buildInputs = [ qt5.qtsvg ] ++ lib.optionals stdenv.isLinux [ qt5.qtwayland ];
+  buildInputs = [ qt5.qtsvg ] ++ lib.optionals stdenv.hostPlatform.isLinux [ qt5.qtwayland ];
 
   postInstall = ''
     install -Dm644 misc/vimiv.desktop $out/share/applications/vimiv.desktop
diff --git a/pkgs/applications/graphics/vpv/default.nix b/pkgs/applications/graphics/vpv/default.nix
index 1bbdbd4a35e7..7f80ff24a3ce 100644
--- a/pkgs/applications/graphics/vpv/default.nix
+++ b/pkgs/applications/graphics/vpv/default.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation (finalAttrs: {
     description = "Image viewer for image processing experts";
     maintainers = [ lib.maintainers.kidanger ];
     license = lib.licenses.gpl3;
-    broken = stdenv.isDarwin; # the CMake expects the SDL2::SDL2main target for darwin
+    broken = stdenv.hostPlatform.isDarwin; # the CMake expects the SDL2::SDL2main target for darwin
     mainProgram = "vpv";
   };
 })
diff --git a/pkgs/applications/graphics/weylus/default.nix b/pkgs/applications/graphics/weylus/default.nix
index 36647a62aef2..61b40006b386 100644
--- a/pkgs/applications/graphics/weylus/default.nix
+++ b/pkgs/applications/graphics/weylus/default.nix
@@ -38,12 +38,12 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     ffmpeg
     x264
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ApplicationServices
     Carbon
     Cocoa
     VideoToolbox
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     dbus
     libva
     gst_all_1.gst-plugins-base
@@ -67,7 +67,7 @@ rustPlatform.buildRustPackage rec {
     git
     typescript
     makeWrapper
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     pkg-config
     autoconf
     libtool
@@ -88,7 +88,7 @@ rustPlatform.buildRustPackage rec {
       gst_all_1.gst-plugins-base
       pipewire
     ];
-  in lib.optionalString stdenv.isLinux ''
+  in lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/weylus --prefix GST_PLUGIN_PATH : ${GST_PLUGIN_PATH}
   '';
 
@@ -97,7 +97,7 @@ rustPlatform.buildRustPackage rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Use your tablet as graphic tablet/touch screen on your computer";
     mainProgram = "weylus";
     homepage = "https://github.com/H-M-H/Weylus";
diff --git a/pkgs/applications/graphics/xournalpp/default.nix b/pkgs/applications/graphics/xournalpp/default.nix
index 3527f96bf5b9..921fef456289 100644
--- a/pkgs/applications/graphics/xournalpp/default.nix
+++ b/pkgs/applications/graphics/xournalpp/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake gettext pkg-config wrapGAppsHook3 ];
 
   buildInputs =
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       alsa-lib
     ] ++ [
       glib
diff --git a/pkgs/applications/kde/falkon.nix b/pkgs/applications/kde/falkon.nix
index b24375e75005..85c4d113fb13 100644
--- a/pkgs/applications/kde/falkon.nix
+++ b/pkgs/applications/kde/falkon.nix
@@ -20,7 +20,7 @@ mkDerivation rec {
     libpthreadstubs libxcb libXdmcp
     qtsvg qttools qtwebengine qtx11extras
     kwallet kpurpose karchive kio
-  ] ++ lib.optionals stdenv.isLinux [ qtwayland ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ qtwayland ];
 
   nativeBuildInputs = [
     cmake
diff --git a/pkgs/applications/misc/1password-gui/default.nix b/pkgs/applications/misc/1password-gui/default.nix
index f95d5d9a94d8..cecb229ce13f 100644
--- a/pkgs/applications/misc/1password-gui/default.nix
+++ b/pkgs/applications/misc/1password-gui/default.nix
@@ -61,7 +61,7 @@ let
 
   meta = {
     # Requires to be installed in "/Application" which is not possible for now (https://github.com/NixOS/nixpkgs/issues/254944)
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Multi-platform password manager";
     homepage = "https://1password.com/";
     sourceProvenance = with lib.sourceTypes; [ binaryNativeCode ];
@@ -76,7 +76,7 @@ let
   };
 
 in
-if stdenv.isDarwin then
+if stdenv.hostPlatform.isDarwin then
   callPackage ./darwin.nix {
     inherit
       pname
diff --git a/pkgs/applications/misc/1password/default.nix b/pkgs/applications/misc/1password/default.nix
index 9ecc38a9abbb..cbc05d27b878 100644
--- a/pkgs/applications/misc/1password/default.nix
+++ b/pkgs/applications/misc/1password/default.nix
@@ -32,11 +32,11 @@ stdenv.mkDerivation {
     else
       throw "Source for ${pname} is not available for ${system}";
 
-  nativeBuildInputs = [ installShellFiles ] ++ lib.optional stdenv.isLinux autoPatchelfHook;
+  nativeBuildInputs = [ installShellFiles ] ++ lib.optional stdenv.hostPlatform.isLinux autoPatchelfHook;
 
-  buildInputs = lib.optionals stdenv.isDarwin [ xar cpio ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ xar cpio ];
 
-  unpackPhase = lib.optionalString stdenv.isDarwin ''
+  unpackPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     xar -xf $src
     zcat op.pkg/Payload | cpio -i
   '';
@@ -55,7 +55,7 @@ stdenv.mkDerivation {
       --zsh <($out/bin/${mainProgram} completion zsh)
   '';
 
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   doInstallCheck = true;
 
diff --git a/pkgs/applications/misc/anup/default.nix b/pkgs/applications/misc/anup/default.nix
index 91cf5c9540a5..a72ba17eb6b4 100644
--- a/pkgs/applications/misc/anup/default.nix
+++ b/pkgs/applications/misc/anup/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     sqlite
     xdg-utils
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/applications/misc/audio/sox/default.nix b/pkgs/applications/misc/audio/sox/default.nix
index 44e1f0992ad7..621fca6feb2d 100644
--- a/pkgs/applications/misc/audio/sox/default.nix
+++ b/pkgs/applications/misc/audio/sox/default.nix
@@ -31,7 +31,7 @@
 , enableAMR ? false
 , amrnb
 , amrwb
-, enableLibpulseaudio ? stdenv.isLinux && lib.meta.availableOn stdenv.hostPlatform libpulseaudio
+, enableLibpulseaudio ? stdenv.hostPlatform.isLinux && lib.meta.availableOn stdenv.hostPlatform libpulseaudio
 , libpulseaudio
 }:
 
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
   patches = [ ./0001-musl-rewind-pipe-workaround.patch ];
 
   buildInputs =
-    lib.optional (enableAlsa && stdenv.isLinux) alsa-lib
+    lib.optional (enableAlsa && stdenv.hostPlatform.isLinux) alsa-lib
     ++ lib.optional enableLibao libao
     ++ lib.optional enableLame lame
     ++ lib.optional enableLibmad libmad
@@ -77,7 +77,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional enableWavpack wavpack
     ++ lib.optionals enableAMR [ amrnb amrwb ]
     ++ lib.optional enableLibpulseaudio libpulseaudio
-    ++ lib.optional stdenv.isDarwin CoreAudio;
+    ++ lib.optional stdenv.hostPlatform.isDarwin CoreAudio;
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/applications/misc/bambu-studio/default.nix b/pkgs/applications/misc/bambu-studio/default.nix
index 70812441d348..b1ff6eb0a2f5 100644
--- a/pkgs/applications/misc/bambu-studio/default.nix
+++ b/pkgs/applications/misc/bambu-studio/default.nix
@@ -42,7 +42,7 @@
   webkitgtk,
   wxGTK31,
   xorg,
-  withSystemd ? stdenv.isLinux,
+  withSystemd ? stdenv.hostPlatform.isLinux,
 }:
 let
   opencascade-occt = opencascade-occt_7_6;
diff --git a/pkgs/applications/misc/bb/default.nix b/pkgs/applications/misc/bb/default.nix
index 89a0d75fc2b5..16f4c0bd2d6f 100644
--- a/pkgs/applications/misc/bb/default.nix
+++ b/pkgs/applications/misc/bb/default.nix
@@ -12,14 +12,14 @@ stdenv.mkDerivation rec {
   buildInputs = [
     aalib ncurses libmikmod
     xorg.libXau xorg.libXdmcp xorg.libX11
-  ] ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.CoreAudio;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.CoreAudio;
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i -e '/^#include <malloc.h>$/d' *.c
   '';
 
   # error: 'regparm' is not valid on this platform
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64)
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)
     "-D__STRICT_ANSI__";
 
   meta = with lib; {
diff --git a/pkgs/applications/misc/binocle/default.nix b/pkgs/applications/misc/binocle/default.nix
index 92ccc4112993..da77d6c693df 100644
--- a/pkgs/applications/misc/binocle/default.nix
+++ b/pkgs/applications/misc/binocle/default.nix
@@ -31,11 +31,11 @@ rustPlatform.buildRustPackage rec {
     makeWrapper
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit CoreFoundation CoreGraphics CoreVideo Foundation Metal QuartzCore
   ];
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     wrapProgram $out/bin/binocle \
       --suffix LD_LIBRARY_PATH : ${lib.makeLibraryPath (with xorg; [ libX11 libXcursor libXi libXrandr ] ++ [ vulkan-loader ])}
   '';
diff --git a/pkgs/applications/misc/blender/default.nix b/pkgs/applications/misc/blender/default.nix
index 503e739a74bd..369a874896b1 100644
--- a/pkgs/applications/misc/blender/default.nix
+++ b/pkgs/applications/misc/blender/default.nix
@@ -71,22 +71,22 @@
   python3Packages, # must use instead of python3.pkgs, see https://github.com/NixOS/nixpkgs/issues/211340
   rocmPackages, # comes with a significantly larger closure size
   runCommand,
-  spaceNavSupport ? stdenv.isLinux,
+  spaceNavSupport ? stdenv.hostPlatform.isLinux,
   sse2neon,
   stdenv,
   tbb,
   wayland,
   wayland-protocols,
   wayland-scanner,
-  waylandSupport ? stdenv.isLinux,
+  waylandSupport ? stdenv.hostPlatform.isLinux,
   zlib,
   zstd,
 }:
 
 let
-  embreeSupport = (!stdenv.isAarch64 && stdenv.isLinux) || stdenv.isDarwin;
-  openImageDenoiseSupport = (!stdenv.isAarch64 && stdenv.isLinux) || stdenv.isDarwin;
-  openUsdSupport = !stdenv.isDarwin;
+  embreeSupport = (!stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) || stdenv.hostPlatform.isDarwin;
+  openImageDenoiseSupport = (!stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) || stdenv.hostPlatform.isDarwin;
+  openUsdSupport = !stdenv.hostPlatform.isDarwin;
 
   python3 = python3Packages.python;
   pyPkgsOpenusd = python3Packages.openusd.override { withOsl = false; };
@@ -130,10 +130,10 @@ stdenv.mkDerivation (finalAttrs: {
 
   sourceRoot = "source";
 
-  patches = [ ./draco.patch ] ++ lib.optional stdenv.isDarwin ./darwin.patch;
+  patches = [ ./draco.patch ] ++ lib.optional stdenv.hostPlatform.isDarwin ./darwin.patch;
 
   postPatch =
-    (lib.optionalString stdenv.isDarwin ''
+    (lib.optionalString stdenv.hostPlatform.isDarwin ''
       : > build_files/cmake/platform/platform_apple_xcode.cmake
       substituteInPlace source/creator/CMakeLists.txt \
         --replace-fail '${"$"}{LIBDIR}/python' \
@@ -200,7 +200,7 @@ stdenv.mkDerivation (finalAttrs: {
       "-DWITH_GHOST_WAYLAND_DYNLOAD=OFF"
       "-DWITH_GHOST_WAYLAND_LIBDECOR=ON"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "-DLIBDIR=/does-not-exist"
       "-DSSE2NEON_INCLUDE_DIR=${sse2neon}/lib"
     ]
@@ -275,7 +275,7 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optional embreeSupport embree
     ++ lib.optional openImageDenoiseSupport (openimagedenoise.override { inherit cudaSupport; })
     ++ (
-      if (!stdenv.isDarwin) then
+      if (!stdenv.hostPlatform.isDarwin) then
         [
           libGL
           libGLU
@@ -328,14 +328,14 @@ stdenv.mkDerivation (finalAttrs: {
 
   blenderExecutable =
     placeholder "out"
-    + (if stdenv.isDarwin then "/Applications/Blender.app/Contents/MacOS/Blender" else "/bin/blender");
+    + (if stdenv.hostPlatform.isDarwin then "/Applications/Blender.app/Contents/MacOS/Blender" else "/bin/blender");
 
   postInstall =
-    lib.optionalString stdenv.isDarwin ''
+    lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir $out/Applications
       mv $out/Blender.app $out/Applications
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       mv $out/share/blender/${lib.versions.majorMinor finalAttrs.version}/python{,-ext}
     ''
     + ''
@@ -355,7 +355,7 @@ stdenv.mkDerivation (finalAttrs: {
         addDriverRunpath "$program"
       done
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       makeWrapper $out/Applications/Blender.app/Contents/MacOS/Blender $out/bin/blender
     '';
 
@@ -377,7 +377,7 @@ stdenv.mkDerivation (finalAttrs: {
         import bpy
         bpy.context.scene.eevee.taa_render_samples = 32
         bpy.context.scene.cycles.samples = 32
-        if ${if (stdenv.isAarch64 && stdenv.isLinux) then "True" else "False"}:
+        if ${if (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) then "True" else "False"}:
             bpy.context.scene.cycles.use_denoising = False
         bpy.context.scene.render.resolution_x = 100
         bpy.context.scene.render.resolution_y = 100
@@ -433,7 +433,7 @@ stdenv.mkDerivation (finalAttrs: {
       "x86_64-linux"
       "aarch64-darwin"
     ];
-    broken = stdenv.isDarwin; # fails due to too-old SDK, using newer SDK fails to compile
+    broken = stdenv.hostPlatform.isDarwin; # fails due to too-old SDK, using newer SDK fails to compile
     maintainers = with lib.maintainers; [
       amarshall
       veprbl
diff --git a/pkgs/applications/misc/boatswain/default.nix b/pkgs/applications/misc/boatswain/default.nix
index 5d2b1540aebe..fc2842ebe52f 100644
--- a/pkgs/applications/misc/boatswain/default.nix
+++ b/pkgs/applications/misc/boatswain/default.nix
@@ -62,6 +62,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Plus;
     platforms = platforms.unix;
     maintainers = with maintainers; [ _0xMRTT ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/misc/calibre/default.nix b/pkgs/applications/misc/calibre/default.nix
index 10bbeefd03f1..b5e8c469b408 100644
--- a/pkgs/applications/misc/calibre/default.nix
+++ b/pkgs/applications/misc/calibre/default.nix
@@ -224,6 +224,6 @@ stdenv.mkDerivation (finalAttrs: {
               else lib.licenses.gpl3Plus;
     maintainers = with lib.maintainers; [ pSub ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/applications/misc/cardpeek/default.nix b/pkgs/applications/misc/cardpeek/default.nix
index 833ad9202b9f..6122607bc4dc 100644
--- a/pkgs/applications/misc/cardpeek/default.nix
+++ b/pkgs/applications/misc/cardpeek/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation {
     sha256 = "1ighpl7nvcvwnsd6r5h5n9p95kclwrq99hq7bry7s53yr57l6588";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # replace xcode check and hard-coded PCSC framework path
     substituteInPlace configure.ac \
       --replace 'if test ! -e "/Applications/Xcode.app/"; then' 'if test yes != yes; then' \
@@ -34,8 +34,8 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ pkg-config autoreconfHook ];
   buildInputs = [ glib gtk3 lua5_2 curl readline ]
-    ++ lib.optional stdenv.isDarwin PCSC
-    ++ lib.optional stdenv.isLinux pcsclite;
+    ++ lib.optional stdenv.hostPlatform.isDarwin PCSC
+    ++ lib.optional stdenv.hostPlatform.isLinux pcsclite;
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/applications/misc/citations/default.nix b/pkgs/applications/misc/citations/default.nix
index ae3964355a48..178a0e25cbf6 100644
--- a/pkgs/applications/misc/citations/default.nix
+++ b/pkgs/applications/misc/citations/default.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation (finalAttrs: {
     gtksourceview5
     libadwaita
     poppler
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/applications/misc/clipqr/default.nix b/pkgs/applications/misc/clipqr/default.nix
index 18b276f2646f..90d4e0b66b52 100644
--- a/pkgs/applications/misc/clipqr/default.nix
+++ b/pkgs/applications/misc/clipqr/default.nix
@@ -69,7 +69,7 @@ buildGoModule rec {
     license = licenses.mit;
     maintainers = with maintainers; [ MatthieuBarthel ];
     homepage = "https://gitlab.com/imatt-foss/clipqr";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "clipqr";
   };
 }
diff --git a/pkgs/applications/misc/cloak/default.nix b/pkgs/applications/misc/cloak/default.nix
index bf3dd3c4a081..61f307edd555 100644
--- a/pkgs/applications/misc/cloak/default.nix
+++ b/pkgs/applications/misc/cloak/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-m11A5fcJzWoDZglrr2Es1V5ZJNepEkGeIRVhexJ7jws=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     homepage = "https://github.com/evansmurithi/cloak";
diff --git a/pkgs/applications/misc/cobalt/default.nix b/pkgs/applications/misc/cobalt/default.nix
index 82276b73c4d1..a5dd6a8d9ef4 100644
--- a/pkgs/applications/misc/cobalt/default.nix
+++ b/pkgs/applications/misc/cobalt/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-g25Pw3BlRbuaGjsQav6mU9zVyS1mVUKkgKDOILm8R6U=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   meta = with lib; {
     description = "Static site generator written in Rust";
diff --git a/pkgs/applications/misc/collision/default.nix b/pkgs/applications/misc/collision/default.nix
index 96f19b47968a..392bf98af62f 100644
--- a/pkgs/applications/misc/collision/default.nix
+++ b/pkgs/applications/misc/collision/default.nix
@@ -48,7 +48,7 @@ crystal.buildCrystalPackage rec {
   # Shortly, adding pkg-config to buildInputs along with openssl fixes the issue.
 
   nativeBuildInputs = [ wrapGAppsHook4 pkg-config gobject-introspection ]
-    ++ lib.optionals stdenv.isDarwin [ desktopToDarwinBundle ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ desktopToDarwinBundle ];
 
   buildInputs = [
     libadwaita
diff --git a/pkgs/applications/misc/conceal/default.nix b/pkgs/applications/misc/conceal/default.nix
index 94a4d427e84b..5ce8d147fbbf 100644
--- a/pkgs/applications/misc/conceal/default.nix
+++ b/pkgs/applications/misc/conceal/default.nix
@@ -35,6 +35,6 @@ rustPlatform.buildRustPackage rec {
     homepage = "https://github.com/TD-Sky/conceal";
     license = licenses.mit;
     maintainers = with maintainers; [ jedsek kashw2 ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/misc/coolreader/default.nix b/pkgs/applications/misc/coolreader/default.nix
index d75cdd4843fa..22e9906db561 100644
--- a/pkgs/applications/misc/coolreader/default.nix
+++ b/pkgs/applications/misc/coolreader/default.nix
@@ -17,7 +17,7 @@ mkDerivation rec {
   buildInputs = [ qttools fribidi libunibreak ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/buggins/coolreader";
     description = "Cross platform open source e-book reader";
     mainProgram = "cr3";
diff --git a/pkgs/applications/misc/cotp/default.nix b/pkgs/applications/misc/cotp/default.nix
index 3b8d737dc1ee..e2f5cffdfbad 100644
--- a/pkgs/applications/misc/cotp/default.nix
+++ b/pkgs/applications/misc/cotp/default.nix
@@ -19,8 +19,8 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-o9LRXbx77EXXO7rEmpBrx2nommJgG0ikw1YzdeB0Gug=";
 
-  buildInputs = lib.optionals stdenv.isLinux [ libxcb ]
-    ++ lib.optionals stdenv.isDarwin [ AppKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libxcb ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ];
 
   meta = with lib; {
     homepage = "https://github.com/replydev/cotp";
diff --git a/pkgs/applications/misc/cubiomes-viewer/default.nix b/pkgs/applications/misc/cubiomes-viewer/default.nix
index 0d29b7921a66..f75ddf0c108d 100644
--- a/pkgs/applications/misc/cubiomes-viewer/default.nix
+++ b/pkgs/applications/misc/cubiomes-viewer/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/Cubitect/cubiomes-viewer";
     description = "Graphical Minecraft seed finder and map viewer";
     mainProgram = "cubiomes-viewer";
diff --git a/pkgs/applications/misc/diebahn/default.nix b/pkgs/applications/misc/diebahn/default.nix
index 502c247ce2d2..0212547a75a6 100644
--- a/pkgs/applications/misc/diebahn/default.nix
+++ b/pkgs/applications/misc/diebahn/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
     gtk4
     libadwaita
     pango
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     CoreFoundation
     Foundation
     Security
@@ -62,7 +62,7 @@ stdenv.mkDerivation rec {
 
   # Darwin needs to link against gettext from nixpkgs instead of the one vendored by gettext-sys
   # because the vendored copy does not build with newer versions of clang.
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     GETTEXT_BIN_DIR = "${lib.getBin gettext}/bin";
     GETTEXT_INCLUDE_DIR = "${lib.getDev gettext}/include";
     GETTEXT_LIB_DIR = "${lib.getLib gettext}/lib";
diff --git a/pkgs/applications/misc/diff-pdf/default.nix b/pkgs/applications/misc/diff-pdf/default.nix
index 1d54b57c9b2f..d64d8f6ab9be 100644
--- a/pkgs/applications/misc/diff-pdf/default.nix
+++ b/pkgs/applications/misc/diff-pdf/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoconf automake pkg-config ];
   buildInputs = [ cairo poppler wxGTK ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   preConfigure = "./bootstrap";
 
diff --git a/pkgs/applications/misc/dmenu-rs/default.nix b/pkgs/applications/misc/dmenu-rs/default.nix
index 87d484c2e9bf..4b15eae9e614 100644
--- a/pkgs/applications/misc/dmenu-rs/default.nix
+++ b/pkgs/applications/misc/dmenu-rs/default.nix
@@ -71,6 +71,6 @@ stdenv.mkDerivation rec {
     license = with licenses; [ gpl3Only ];
     maintainers = with maintainers; [ benjaminedwardwebb ];
     platforms = platforms.linux;
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   };
 }
diff --git a/pkgs/applications/misc/doctave/default.nix b/pkgs/applications/misc/doctave/default.nix
index 6b54636488e9..8ddbe3a126e1 100644
--- a/pkgs/applications/misc/doctave/default.nix
+++ b/pkgs/applications/misc/doctave/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-keLcNttdM9JUnn3qi/bWkcObIHl3MRACDHKPSZuScOc=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
   ];
 
diff --git a/pkgs/applications/misc/done/default.nix b/pkgs/applications/misc/done/default.nix
index 47238cd9cb9c..095d77b1ee83 100644
--- a/pkgs/applications/misc/done/default.nix
+++ b/pkgs/applications/misc/done/default.nix
@@ -54,11 +54,11 @@ stdenv.mkDerivation rec {
     libsecret
     openssl
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
   ];
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     GETTEXT_DIR = gettext;
   };
 
diff --git a/pkgs/applications/misc/dupeguru/default.nix b/pkgs/applications/misc/dupeguru/default.nix
index c514c2177369..8ec9dfc35033 100644
--- a/pkgs/applications/misc/dupeguru/default.nix
+++ b/pkgs/applications/misc/dupeguru/default.nix
@@ -60,7 +60,7 @@ python3Packages.buildPythonApplication rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "GUI tool to find duplicate files in a system";
     homepage = "https://github.com/arsenetar/dupeguru";
     license = licenses.bsd3;
diff --git a/pkgs/applications/misc/electron-cash/default.nix b/pkgs/applications/misc/electron-cash/default.nix
index 910e21528eb5..e9854ac3ef94 100644
--- a/pkgs/applications/misc/electron-cash/default.nix
+++ b/pkgs/applications/misc/electron-cash/default.nix
@@ -51,7 +51,7 @@ python3Packages.buildPythonApplication rec {
 
   nativeBuildInputs = [ wrapQtAppsHook ];
 
-  buildInputs = [ ] ++ lib.optional stdenv.isLinux qtwayland;
+  buildInputs = [ ] ++ lib.optional stdenv.hostPlatform.isLinux qtwayland;
 
   postPatch = ''
     substituteInPlace contrib/requirements/requirements.txt \
@@ -61,7 +61,7 @@ python3Packages.buildPythonApplication rec {
       --replace "(share_dir" "(\"share\""
   '';
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace $out/share/applications/electron-cash.desktop \
       --replace "Exec=electron-cash" "Exec=$out/bin/electron-cash"
   '';
diff --git a/pkgs/applications/misc/electrum/default.nix b/pkgs/applications/misc/electrum/default.nix
index 859d7bb42b00..0faaf369125d 100644
--- a/pkgs/applications/misc/electrum/default.nix
+++ b/pkgs/applications/misc/electrum/default.nix
@@ -32,13 +32,13 @@ let
   };
 
   libsecp256k1_name =
-    if stdenv.isLinux then "libsecp256k1.so.{v}"
-    else if stdenv.isDarwin then "libsecp256k1.{v}.dylib"
+    if stdenv.hostPlatform.isLinux then "libsecp256k1.so.{v}"
+    else if stdenv.hostPlatform.isDarwin then "libsecp256k1.{v}.dylib"
     else "libsecp256k1${stdenv.hostPlatform.extensions.sharedLibrary}";
 
   libzbar_name =
-    if stdenv.isLinux then "libzbar.so.0"
-    else if stdenv.isDarwin then "libzbar.0.dylib"
+    if stdenv.hostPlatform.isLinux then "libzbar.so.0"
+    else if stdenv.hostPlatform.isDarwin then "libzbar.0.dylib"
     else "libzbar${stdenv.hostPlatform.extensions.sharedLibrary}";
 
   # Not provided in official source releases, which are what upstream signs.
@@ -71,7 +71,7 @@ python.pkgs.buildPythonApplication {
   '';
 
   nativeBuildInputs = lib.optionals enableQt [ wrapQtAppsHook ];
-  buildInputs = lib.optional (stdenv.isLinux && enableQt) qtwayland;
+  buildInputs = lib.optional (stdenv.hostPlatform.isLinux && enableQt) qtwayland;
 
   propagatedBuildInputs = with python.pkgs; [
     aiohttp
@@ -124,7 +124,7 @@ python.pkgs.buildPythonApplication {
     sed -i '/qdarkstyle/d' contrib/requirements/requirements.txt
   '');
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace $out/share/applications/electrum.desktop \
       --replace 'Exec=sh -c "PATH=\"\\$HOME/.local/bin:\\$PATH\"; electrum %u"' \
                 "Exec=$out/bin/electrum %u" \
diff --git a/pkgs/applications/misc/electrum/grs.nix b/pkgs/applications/misc/electrum/grs.nix
index 9d71a5886be6..cd0b89f94f05 100644
--- a/pkgs/applications/misc/electrum/grs.nix
+++ b/pkgs/applications/misc/electrum/grs.nix
@@ -13,13 +13,13 @@ let
   version = "4.5.4";
 
   libsecp256k1_name =
-    if stdenv.isLinux then "libsecp256k1.so.{v}"
-    else if stdenv.isDarwin then "libsecp256k1.{v}.dylib"
+    if stdenv.hostPlatform.isLinux then "libsecp256k1.so.{v}"
+    else if stdenv.hostPlatform.isDarwin then "libsecp256k1.{v}.dylib"
     else "libsecp256k1${stdenv.hostPlatform.extensions.sharedLibrary}";
 
   libzbar_name =
-    if stdenv.isLinux then "libzbar.so.0"
-    else if stdenv.isDarwin then "libzbar.0.dylib"
+    if stdenv.hostPlatform.isLinux then "libzbar.so.0"
+    else if stdenv.hostPlatform.isDarwin then "libzbar.0.dylib"
     else "libzbar${stdenv.hostPlatform.extensions.sharedLibrary}";
 
 in
@@ -36,7 +36,7 @@ python3.pkgs.buildPythonApplication {
   };
 
   nativeBuildInputs = lib.optionals enableQt [ wrapQtAppsHook ];
-  buildInputs = lib.optional (stdenv.isLinux && enableQt) qtwayland;
+  buildInputs = lib.optional (stdenv.hostPlatform.isLinux && enableQt) qtwayland;
 
   propagatedBuildInputs = with python3.pkgs; [
     aiohttp
@@ -90,7 +90,7 @@ python3.pkgs.buildPythonApplication {
     sed -i '/qdarkstyle/d' contrib/requirements/requirements.txt
   '');
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace $out/share/applications/electrum-grs.desktop \
       --replace 'Exec=sh -c "PATH=\"\\$HOME/.local/bin:\\$PATH\"; electrum-grs %u"' \
                 "Exec=$out/bin/electrum-grs %u" \
diff --git a/pkgs/applications/misc/electrum/ltc.nix b/pkgs/applications/misc/electrum/ltc.nix
index 110a17aeeac9..e0aaf139cd65 100644
--- a/pkgs/applications/misc/electrum/ltc.nix
+++ b/pkgs/applications/misc/electrum/ltc.nix
@@ -14,13 +14,13 @@ let
   version = "4.2.2.1";
 
   libsecp256k1_name =
-    if stdenv.isLinux then "libsecp256k1.so.0"
-    else if stdenv.isDarwin then "libsecp256k1.0.dylib"
+    if stdenv.hostPlatform.isLinux then "libsecp256k1.so.0"
+    else if stdenv.hostPlatform.isDarwin then "libsecp256k1.0.dylib"
     else "libsecp256k1${stdenv.hostPlatform.extensions.sharedLibrary}";
 
   libzbar_name =
-    if stdenv.isLinux then "libzbar.so.0"
-    else if stdenv.isDarwin then "libzbar.0.dylib"
+    if stdenv.hostPlatform.isLinux then "libzbar.so.0"
+    else if stdenv.hostPlatform.isDarwin then "libzbar.0.dylib"
     else "libzbar${stdenv.hostPlatform.extensions.sharedLibrary}";
 
   # Not provided in official source releases, which are what upstream signs.
@@ -112,7 +112,7 @@ python3.pkgs.buildPythonApplication {
     sed -i '/qdarkstyle/d' contrib/requirements/requirements.txt
   '');
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     # Despite setting usr_share above, these files are installed under
     # $out/nix ...
     mv $out/${python3.sitePackages}/nix/store"/"*/share $out
@@ -131,7 +131,7 @@ python3.pkgs.buildPythonApplication {
   '';
 
   nativeCheckInputs = with python3.pkgs; [ pytestCheckHook pyaes pycryptodomex ];
-  buildInputs = lib.optional stdenv.isLinux qtwayland;
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux qtwayland;
 
   pytestFlagsArray = [ "electrum_ltc/tests" ];
 
diff --git a/pkgs/applications/misc/etesync-dav/default.nix b/pkgs/applications/misc/etesync-dav/default.nix
index 6b68334f20f4..1758dde546ea 100644
--- a/pkgs/applications/misc/etesync-dav/default.nix
+++ b/pkgs/applications/misc/etesync-dav/default.nix
@@ -42,6 +42,6 @@ python3.pkgs.buildPythonApplication {
     mainProgram = "etesync-dav";
     license = licenses.gpl3;
     maintainers = with maintainers; [ thyol valodim ];
-    broken = stdenv.isDarwin; # pyobjc-framework-Cocoa is missing
+    broken = stdenv.hostPlatform.isDarwin; # pyobjc-framework-Cocoa is missing
   };
 }
diff --git a/pkgs/applications/misc/eureka-ideas/default.nix b/pkgs/applications/misc/eureka-ideas/default.nix
index f8f24fa63569..f9a911a1c119 100644
--- a/pkgs/applications/misc/eureka-ideas/default.nix
+++ b/pkgs/applications/misc/eureka-ideas/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     libgit2
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/applications/misc/faircamp/default.nix b/pkgs/applications/misc/faircamp/default.nix
index 9f8a507fdce4..0f9155fe1b89 100644
--- a/pkgs/applications/misc/faircamp/default.nix
+++ b/pkgs/applications/misc/faircamp/default.nix
@@ -53,7 +53,7 @@ rustPlatform.buildRustPackage rec {
     glib
     libopus
     vips
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/applications/misc/far2l/default.nix b/pkgs/applications/misc/far2l/default.nix
index f35df6a049f2..7508bc53e657 100644
--- a/pkgs/applications/misc/far2l/default.nix
+++ b/pkgs/applications/misc/far2l/default.nix
@@ -31,9 +31,9 @@ stdenv.mkDerivation rec {
     ++ lib.optionals withColorer [ spdlog xercesc ]
     ++ lib.optionals withMultiArc [ libarchive pcre ]
     ++ lib.optionals withNetRocks [ openssl libssh libnfs neon ]
-    ++ lib.optional (withNetRocks && !stdenv.isDarwin) samba # broken on darwin
+    ++ lib.optional (withNetRocks && !stdenv.hostPlatform.isDarwin) samba # broken on darwin
     ++ lib.optionals withPython (with python3Packages; [ python cffi debugpy pcpp ])
-    ++ lib.optionals stdenv.isDarwin [ IOKit Carbon Cocoa AudioToolbox OpenGL System ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit Carbon Cocoa AudioToolbox OpenGL System ];
 
   postPatch = ''
     patchShebangs python/src/prebuild.sh
diff --git a/pkgs/applications/misc/firestarter/default.nix b/pkgs/applications/misc/firestarter/default.nix
index 8eb001e9c93b..55e1700c5c85 100644
--- a/pkgs/applications/misc/firestarter/default.nix
+++ b/pkgs/applications/misc/firestarter/default.nix
@@ -99,7 +99,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     homepage = "https://tu-dresden.de/zih/forschung/projekte/firestarter";
     description = "Processor Stress Test Utility";
     platforms = platforms.linux;
diff --git a/pkgs/applications/misc/flavours/default.nix b/pkgs/applications/misc/flavours/default.nix
index 98146e6bfdf3..c2cb20ef5b74 100644
--- a/pkgs/applications/misc/flavours/default.nix
+++ b/pkgs/applications/misc/flavours/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-SOsHvcfDdUpb0x5VZ1vZJnGaIiWWOPgnAwKYNXzfUfI=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   cargoHash = "sha256-aimPeGIE5jP0pdrqwnzUzBqW0jz9+kcfpLdCN0r30xU=";
 
diff --git a/pkgs/applications/misc/gcal/default.nix b/pkgs/applications/misc/gcal/default.nix
index 8f345f39b534..f07a18c0edae 100644
--- a/pkgs/applications/misc/gcal/default.nix
+++ b/pkgs/applications/misc/gcal/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  buildInputs = [ ncurses ] ++ lib.optional stdenv.isDarwin gettext;
+  buildInputs = [ ncurses ] ++ lib.optional stdenv.hostPlatform.isDarwin gettext;
 
   meta = {
     description = "Program for calculating and printing calendars";
diff --git a/pkgs/applications/misc/gcalcli/default.nix b/pkgs/applications/misc/gcalcli/default.nix
index da456226b1a7..c9c29cd8e007 100644
--- a/pkgs/applications/misc/gcalcli/default.nix
+++ b/pkgs/applications/misc/gcalcli/default.nix
@@ -27,7 +27,7 @@ python3Packages.buildPythonApplication rec {
         --replace-fail "\"types-requests\"," "" \
         --replace-fail "\"types-vobject\"," ""
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       substituteInPlace gcalcli/argparsers.py \
         --replace-fail "'notify-send" "'${lib.getExe libnotify}"
     '';
diff --git a/pkgs/applications/misc/gcfflasher/default.nix b/pkgs/applications/misc/gcfflasher/default.nix
index b9a49e172329..01a071dc68f4 100644
--- a/pkgs/applications/misc/gcfflasher/default.nix
+++ b/pkgs/applications/misc/gcfflasher/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
     cmake
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     libgpiod
   ];
 
diff --git a/pkgs/applications/misc/get_iplayer/default.nix b/pkgs/applications/misc/get_iplayer/default.nix
index 4f455d901c2d..c807438aaa43 100644
--- a/pkgs/applications/misc/get_iplayer/default.nix
+++ b/pkgs/applications/misc/get_iplayer/default.nix
@@ -20,7 +20,7 @@ perlPackages.buildPerlPackage rec {
     hash = "sha256-fqzrgmtqy7dlmGEaTXAqpdt9HqZCVooJ0Vf6/JUKihw=";
   };
 
-  nativeBuildInputs = [ makeWrapper ] ++ lib.optional stdenv.isDarwin shortenPerlShebang;
+  nativeBuildInputs = [ makeWrapper ] ++ lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
   buildInputs = [ perl ];
   propagatedBuildInputs = with perlPackages; [
     LWP LWPProtocolHttps XMLLibXML Mojolicious
@@ -40,7 +40,7 @@ perlPackages.buildPerlPackage rec {
     runHook postInstall
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/.get_iplayer-wrapped
   '';
 
diff --git a/pkgs/applications/misc/gimoji/default.nix b/pkgs/applications/misc/gimoji/default.nix
index 71582e3acc39..802c03489b11 100644
--- a/pkgs/applications/misc/gimoji/default.nix
+++ b/pkgs/applications/misc/gimoji/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-pKHhYWEF9L0UX9hc2Ga3WOUWzISA8ONwn3rcI9u2/n0=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
   ];
 
diff --git a/pkgs/applications/misc/girara/default.nix b/pkgs/applications/misc/girara/default.nix
index d33560c4f16a..37f12a266c68 100644
--- a/pkgs/applications/misc/girara/default.nix
+++ b/pkgs/applications/misc/girara/default.nix
@@ -55,11 +55,11 @@ stdenv.mkDerivation rec {
     xvfb-run
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   mesonFlags = [
     "-Ddocs=disabled" # docs do not seem to be installed
-    (lib.mesonEnable "tests" ((stdenv.buildPlatform.canExecute stdenv.hostPlatform) && (!stdenv.isDarwin)))
+    (lib.mesonEnable "tests" ((stdenv.buildPlatform.canExecute stdenv.hostPlatform) && (!stdenv.hostPlatform.isDarwin)))
   ];
 
   checkPhase = ''
diff --git a/pkgs/applications/misc/gkrellm/default.nix b/pkgs/applications/misc/gkrellm/default.nix
index 218110f6d17d..e6d8dfc31f5a 100644
--- a/pkgs/applications/misc/gkrellm/default.nix
+++ b/pkgs/applications/misc/gkrellm/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ copyDesktopItems pkg-config which wrapGAppsHook3 ];
   buildInputs = [ gettext glib gtk2 libX11 libSM libICE ]
-    ++ lib.optionals stdenv.isDarwin [ IOKit ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit ];
 
   hardeningDisable = [ "format" ];
 
diff --git a/pkgs/applications/misc/golden-cheetah-bin/default.nix b/pkgs/applications/misc/golden-cheetah-bin/default.nix
index 3fcd77f8f4b7..c37e7dc72fff 100644
--- a/pkgs/applications/misc/golden-cheetah-bin/default.nix
+++ b/pkgs/applications/misc/golden-cheetah-bin/default.nix
@@ -29,7 +29,7 @@ appimageTools.wrapType2 {
   meta = {
     description = "Performance software for cyclists, runners and triathletes. This version includes the API Tokens for e.g. Strava";
     platforms = lib.platforms.linux;
-    broken = !stdenv.isx86_64;
+    broken = !stdenv.hostPlatform.isx86_64;
     maintainers = with lib.maintainers; [ gador adamcstephens ];
     license = lib.licenses.gpl2Plus;
     sourceProvenance = with lib.sourceTypes; [ binaryNativeCode ];
diff --git a/pkgs/applications/misc/goldendict/default.nix b/pkgs/applications/misc/goldendict/default.nix
index 6b1865509b72..9c8edf3c774e 100644
--- a/pkgs/applications/misc/goldendict/default.nix
+++ b/pkgs/applications/misc/goldendict/default.nix
@@ -36,8 +36,8 @@ stdenv.mkDerivation rec {
   buildInputs = [
     qtbase qtsvg qtwebkit qttools
     libvorbis hunspell xz lzo
-  ] ++ lib.optionals stdenv.isLinux [ qtx11extras libXtst ]
-    ++ lib.optionals stdenv.isDarwin [ bzip2 libiconv ]
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ qtx11extras libXtst ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ bzip2 libiconv ]
     ++ lib.optional withCC opencc
     ++ lib.optional withEpwing libeb
     ++ lib.optional withExtraTiff libtiff
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
     (lib.optional withZim "CONFIG+=zim_support")
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv GoldenDict.app $out/Applications
   '';
diff --git a/pkgs/applications/misc/gpsbabel/default.nix b/pkgs/applications/misc/gpsbabel/default.nix
index fbacfb6984c6..e1cfb556891a 100644
--- a/pkgs/applications/misc/gpsbabel/default.nix
+++ b/pkgs/applications/misc/gpsbabel/default.nix
@@ -2,7 +2,7 @@
 , qmake, qttools, wrapQtAppsHook
 , libusb1, shapelib, zlib
 , withGUI ? false, qtserialport
-, withMapPreview ? (!stdenv.isDarwin), qtwebengine
+, withMapPreview ? (!stdenv.hostPlatform.isDarwin), qtwebengine
 , withDoc ? false, docbook_xml_dtd_45, docbook_xsl, expat, fop, libxml2, libxslt, perl
 }:
 
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
 
   # Floating point behavior on i686 causes nmea.test failures. Preventing
   # extended precision fixes this problem.
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isi686 "-ffloat-store";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isi686 "-ffloat-store";
 
   doCheck = true;
 
@@ -69,7 +69,7 @@ stdenv.mkDerivation rec {
 
   installPhase = ''
     install -Dm755 gpsbabel -t $out/bin
-  '' + lib.optionalString withGUI (if stdenv.isDarwin then ''
+  '' + lib.optionalString withGUI (if stdenv.hostPlatform.isDarwin then ''
     mkdir -p $out/Applications
     mv gui/GPSBabelFE.app $out/Applications
     install -Dm644 gui/*.qm gui/coretool/*.qm -t $out/Applications/GPSBabelFE.app/Contents/Resources/translations
@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
     cp -r html $doc/share/doc/gpsbabel
   '';
 
-  postFixup = lib.optionalString withGUI (if stdenv.isDarwin then ''
+  postFixup = lib.optionalString withGUI (if stdenv.hostPlatform.isDarwin then ''
     wrapQtApp "$out/Applications/GPSBabelFE.app/Contents/MacOS/GPSBabelFE"
   '' else ''
     wrapQtApp "$out/bin/gpsbabelfe"
diff --git a/pkgs/applications/misc/gpxlab/default.nix b/pkgs/applications/misc/gpxlab/default.nix
index 18c31afef6b5..c3002104256c 100644
--- a/pkgs/applications/misc/gpxlab/default.nix
+++ b/pkgs/applications/misc/gpxlab/default.nix
@@ -19,7 +19,7 @@ mkDerivation rec {
     lrelease GPXLab/locale/*.ts
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv GPXLab/GPXLab.app $out/Applications
   '';
diff --git a/pkgs/applications/misc/gpxsee/default.nix b/pkgs/applications/misc/gpxsee/default.nix
index add7ea7a789c..60bc8b579237 100644
--- a/pkgs/applications/misc/gpxsee/default.nix
+++ b/pkgs/applications/misc/gpxsee/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation (finalAttrs: {
     lrelease gpxsee.pro
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv GPXSee.app $out/Applications
     mkdir -p $out/bin
@@ -58,7 +58,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   meta = {
-    broken = isQt6 && stdenv.isDarwin;
+    broken = isQt6 && stdenv.hostPlatform.isDarwin;
     changelog = "https://build.opensuse.org/package/view_file/home:tumic:GPXSee/gpxsee/gpxsee.changes";
     description = "GPS log file viewer and analyzer";
     mainProgram = "gpxsee";
diff --git a/pkgs/applications/misc/gsctl/default.nix b/pkgs/applications/misc/gsctl/default.nix
index b2b9c7b67b06..bb30f7d1b632 100644
--- a/pkgs/applications/misc/gsctl/default.nix
+++ b/pkgs/applications/misc/gsctl/default.nix
@@ -31,7 +31,7 @@ buildGoModule rec {
     kubectl
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Giant Swarm command line interface";
diff --git a/pkgs/applications/misc/gv/default.nix b/pkgs/applications/misc/gv/default.nix
index ca12e3bc77a9..b812e5607380 100644
--- a/pkgs/applications/misc/gv/default.nix
+++ b/pkgs/applications/misc/gv/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "0q8s43z14vxm41pfa8s5h9kyyzk1fkwjhkiwbf2x70alm6rv6qi1";
   };
 
-  configureFlags = lib.optionals stdenv.isDarwin [
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "--enable-SIGCHLD-fallback"
   ];
 
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     Xaw3d
     ghostscriptX
     perl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ];
 
diff --git a/pkgs/applications/misc/health/default.nix b/pkgs/applications/misc/health/default.nix
index 8a2972e99a3a..8ff79b36a515 100644
--- a/pkgs/applications/misc/health/default.nix
+++ b/pkgs/applications/misc/health/default.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
     libadwaita
     libsecret
     tracker
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.Foundation
   ];
diff --git a/pkgs/applications/misc/inherd-quake/default.nix b/pkgs/applications/misc/inherd-quake/default.nix
index 4f9c748730e5..c71dae3b27e1 100644
--- a/pkgs/applications/misc/inherd-quake/default.nix
+++ b/pkgs/applications/misc/inherd-quake/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     Security
   ];
diff --git a/pkgs/applications/misc/inlyne/default.nix b/pkgs/applications/misc/inlyne/default.nix
index 661f537d8bef..9f1013604229 100644
--- a/pkgs/applications/misc/inlyne/default.nix
+++ b/pkgs/applications/misc/inlyne/default.nix
@@ -28,11 +28,11 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [
     installShellFiles
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     fontconfig
     xorg.libXcursor
     xorg.libXi
@@ -41,11 +41,11 @@ rustPlatform.buildRustPackage rec {
     wayland
     libxkbcommon
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.AppKit
   ];
 
-  checkFlags = lib.optionals stdenv.isDarwin [
+  checkFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     # time out on darwin
     "--skip=interpreter::tests::centered_image_with_size_align_and_link"
     "--skip=watcher::tests::the_gauntlet"
@@ -58,7 +58,7 @@ rustPlatform.buildRustPackage rec {
       --zsh completions/_inlyne
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf $out/bin/inlyne \
       --add-rpath ${lib.makeLibraryPath [ libGL xorg.libX11 ]}
   '';
diff --git a/pkgs/applications/misc/inochi2d/default.nix b/pkgs/applications/misc/inochi2d/default.nix
index 44a98ee40339..a88c58d38555 100644
--- a/pkgs/applications/misc/inochi2d/default.nix
+++ b/pkgs/applications/misc/inochi2d/default.nix
@@ -45,7 +45,7 @@ in
 
     meta = {
       # darwin has slightly different build steps
-      broken = stdenv.isDarwin;
+      broken = stdenv.hostPlatform.isDarwin;
       changelog = "https://github.com/Inochi2D/inochi-creator/releases/tag/${src.rev}";
       description = "An open source editor for the Inochi2D puppet format";
     };
@@ -73,7 +73,7 @@ in
 
     meta = {
       # darwin has slightly different build steps, aarch fails to build because of some lua related error
-      broken = stdenv.isDarwin || stdenv.isAarch64;
+      broken = stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isAarch64;
       changelog = "https://github.com/Inochi2D/inochi-session/releases/tag/${src.rev}";
       description = "An application that allows streaming with Inochi2D puppets";
     };
diff --git a/pkgs/applications/misc/joplin-desktop/default.nix b/pkgs/applications/misc/joplin-desktop/default.nix
index 6a1a9423b5eb..bd7bcebd0228 100644
--- a/pkgs/applications/misc/joplin-desktop/default.nix
+++ b/pkgs/applications/misc/joplin-desktop/default.nix
@@ -74,6 +74,6 @@ let
     '';
   };
 in
-if stdenv.isDarwin
+if stdenv.hostPlatform.isDarwin
 then darwin
 else linux
diff --git a/pkgs/applications/misc/jp2a/default.nix b/pkgs/applications/misc/jp2a/default.nix
index 770246876816..f55b435a4b61 100644
--- a/pkgs/applications/misc/jp2a/default.nix
+++ b/pkgs/applications/misc/jp2a/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   installFlags = [ "bashcompdir=\${out}/share/bash-completion/completions" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://csl.name/jp2a/";
     description = "Small utility that converts JPG images to ASCII";
     license = licenses.gpl2Only;
diff --git a/pkgs/applications/misc/kbt/default.nix b/pkgs/applications/misc/kbt/default.nix
index c59b5e62c433..8a7e91ba3c7d 100644
--- a/pkgs/applications/misc/kbt/default.nix
+++ b/pkgs/applications/misc/kbt/default.nix
@@ -20,13 +20,13 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-6zD9WRPWEt0ubppaMRTOusy0zm3z6SGB/5/kMxcJ/Ag=";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     xorg.libX11
   ];
 
diff --git a/pkgs/applications/misc/keepassxc/default.nix b/pkgs/applications/misc/keepassxc/default.nix
index 8e9035c101d1..914884a9aa2b 100644
--- a/pkgs/applications/misc/keepassxc/default.nix
+++ b/pkgs/applications/misc/keepassxc/default.nix
@@ -54,10 +54,10 @@ stdenv.mkDerivation rec {
   env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang (toString [
     "-Wno-old-style-cast"
     "-Wno-error"
-    "-D__BIG_ENDIAN__=${if stdenv.isBigEndian then "1" else "0"}"
+    "-D__BIG_ENDIAN__=${if stdenv.hostPlatform.isBigEndian then "1" else "0"}"
   ]);
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-rpath ${libargon2}/lib";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-rpath ${libargon2}/lib";
 
   patches = [
     ./darwin.patch
@@ -69,8 +69,8 @@ stdenv.mkDerivation rec {
     "-DWITH_XC_UPDATECHECK=OFF"
   ]
   ++ (lib.optional (!withKeePassX11) "-DWITH_XC_X11=OFF")
-  ++ (lib.optional (withKeePassFDOSecrets && stdenv.isLinux) "-DWITH_XC_FDOSECRETS=ON")
-  ++ (lib.optional (withKeePassYubiKey && stdenv.isLinux) "-DWITH_XC_YUBIKEY=ON")
+  ++ (lib.optional (withKeePassFDOSecrets && stdenv.hostPlatform.isLinux) "-DWITH_XC_FDOSECRETS=ON")
+  ++ (lib.optional (withKeePassYubiKey && stdenv.hostPlatform.isLinux) "-DWITH_XC_YUBIKEY=ON")
   ++ (lib.optional withKeePassBrowser "-DWITH_XC_BROWSER=ON")
   ++ (lib.optional withKeePassBrowserPasskeys "-DWITH_XC_BROWSER_PASSKEYS=ON")
   ++ (lib.optional withKeePassKeeShare "-DWITH_XC_KEESHARE=ON")
@@ -86,7 +86,7 @@ stdenv.mkDerivation rec {
     export QT_PLUGIN_PATH="${qtbase.bin}/${qtbase.qtPluginPrefix}"
     # testcli, testgui and testkdbx4 are flaky - skip them all
     # testautotype on darwin throws "QWidget: Cannot create a QWidget without QApplication"
-    make test ARGS+="-E 'testcli|testgui${lib.optionalString stdenv.isDarwin "|testautotype|testkdbx4"}' --output-on-failure"
+    make test ARGS+="-E 'testcli|testgui${lib.optionalString stdenv.hostPlatform.isDarwin "|testautotype|testkdbx4"}' --output-on-failure"
 
     runHook postCheck
   '';
@@ -98,12 +98,12 @@ stdenv.mkDerivation rec {
     qttools
     pkg-config
   ]
-  ++ lib.optional (!stdenv.isDarwin) wrapGAppsHook3;
+  ++ lib.optional (!stdenv.hostPlatform.isDarwin) wrapGAppsHook3;
 
   dontWrapGApps = true;
   preFixup = ''
     qtWrapperArgs+=("''${gappsWrapperArgs[@]}")
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     wrapQtApp "$out/Applications/KeePassXC.app/Contents/MacOS/KeePassXC"
   '';
 
@@ -128,9 +128,9 @@ stdenv.mkDerivation rec {
     readline
     zlib
   ]
-  ++ lib.optional (stdenv.isDarwin && withKeePassTouchID) LocalAuthentication
-  ++ lib.optional stdenv.isDarwin qtmacextras
-  ++ lib.optional stdenv.isLinux libusb1
+  ++ lib.optional (stdenv.hostPlatform.isDarwin && withKeePassTouchID) LocalAuthentication
+  ++ lib.optional stdenv.hostPlatform.isDarwin qtmacextras
+  ++ lib.optional stdenv.hostPlatform.isLinux libusb1
   ++ lib.optional withKeePassX11 qtx11extras;
 
   passthru.tests = nixosTests.keepassxc;
diff --git a/pkgs/applications/misc/kemai/default.nix b/pkgs/applications/misc/kemai/default.nix
index 70941045ce36..7ad3afc16ce5 100644
--- a/pkgs/applications/misc/kemai/default.nix
+++ b/pkgs/applications/misc/kemai/default.nix
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     maintainers = with maintainers; [ poelzi ];
     platforms   = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "Kemai";
   };
 }
diff --git a/pkgs/applications/misc/khal/default.nix b/pkgs/applications/misc/khal/default.nix
index 83de3e517d78..32c307af6025 100644
--- a/pkgs/applications/misc/khal/default.nix
+++ b/pkgs/applications/misc/khal/default.nix
@@ -69,7 +69,7 @@ python3.pkgs.buildPythonApplication rec {
     install -Dm755 misc/khal.desktop -t $out/share/applications
   '';
 
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
 
   LC_ALL = "en_US.UTF-8";
 
diff --git a/pkgs/applications/misc/klipper-estimator/default.nix b/pkgs/applications/misc/klipper-estimator/default.nix
index 136ad6115d78..e7a511769a8e 100644
--- a/pkgs/applications/misc/klipper-estimator/default.nix
+++ b/pkgs/applications/misc/klipper-estimator/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ libgit2 Security SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libgit2 Security SystemConfiguration ];
 
   nativeBuildInputs = [ pkg-config ];
 
diff --git a/pkgs/applications/misc/kord/default.nix b/pkgs/applications/misc/kord/default.nix
index 65337780469a..4cbd5f38e19a 100644
--- a/pkgs/applications/misc/kord/default.nix
+++ b/pkgs/applications/misc/kord/default.nix
@@ -40,11 +40,11 @@ rustPlatform.buildRustPackage rec {
     })
   ];
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config ]
-    ++ lib.optionals stdenv.isDarwin [ rustPlatform.bindgenHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ rustPlatform.bindgenHook ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ alsa-lib ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.AudioUnit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.AudioUnit ];
 
   meta = with lib; {
     description = "Music theory binary and library for Rust";
diff --git a/pkgs/applications/misc/leetcode-cli/default.nix b/pkgs/applications/misc/leetcode-cli/default.nix
index 3cca48b24c61..24d7faf40722 100644
--- a/pkgs/applications/misc/leetcode-cli/default.nix
+++ b/pkgs/applications/misc/leetcode-cli/default.nix
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage rec {
     openssl
     dbus
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
     installShellCompletion --cmd leetcode \
diff --git a/pkgs/applications/misc/lenmus/default.nix b/pkgs/applications/misc/lenmus/default.nix
index 7dc018e08714..c7a1ce9f5d2f 100644
--- a/pkgs/applications/misc/lenmus/default.nix
+++ b/pkgs/applications/misc/lenmus/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     cmake
     pkg-config
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     makeWrapper
   ];
 
@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
     wxsqlite3
     fluidsynth
     fontconfig
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ];
 
@@ -75,7 +75,7 @@ stdenv.mkDerivation rec {
     "-DMAN_INSTALL_DIR=${placeholder "out"}/share/man"
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications,bin}
     mv $out/lenmus.app $out/Applications
     mv $out/Resources $out/Applications/lenmus.app/Contents
diff --git a/pkgs/applications/misc/llpp/default.nix b/pkgs/applications/misc/llpp/default.nix
index db089796222c..ff5d34e8224a 100644
--- a/pkgs/applications/misc/llpp/default.nix
+++ b/pkgs/applications/misc/llpp/default.nix
@@ -43,8 +43,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ makeWrapper ocaml pkg-config ];
   buildInputs = [ mupdf libX11 freetype zlib gumbo jbig2dec openjpeg libjpeg lcms2 harfbuzz ]
-    ++ lib.optionals stdenv.isLinux [ libGLU libGL ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.OpenGL darwin.apple_sdk.frameworks.Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libGLU libGL ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.OpenGL darwin.apple_sdk.frameworks.Cocoa ];
 
   dontStrip = true;
 
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
     install build/llpp $out/bin
     install misc/llpp.inotify $out/bin/llpp.inotify
     install -Dm444 misc/llpp.desktop -t $out/share/applications
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/llpp \
         --prefix PATH ":" "${xclip}/bin"
 
diff --git a/pkgs/applications/misc/mdzk/default.nix b/pkgs/applications/misc/mdzk/default.nix
index e4093295df68..92498cc92612 100644
--- a/pkgs/applications/misc/mdzk/default.nix
+++ b/pkgs/applications/misc/mdzk/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-5zGUBvmf68tCk5jGrNn+ukgYbiKzrlmZvWrYgoJf2zk=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   meta = with lib; {
     description = "Plain text Zettelkasten based on mdBook";
diff --git a/pkgs/applications/misc/mob/default.nix b/pkgs/applications/misc/mob/default.nix
index 8a74624d616a..90c1683edeea 100644
--- a/pkgs/applications/misc/mob/default.nix
+++ b/pkgs/applications/misc/mob/default.nix
@@ -2,7 +2,7 @@
 , buildGoModule
 , fetchFromGitHub
 , stdenv
-, withSpeech ? !stdenv.isDarwin
+, withSpeech ? !stdenv.hostPlatform.isDarwin
 , makeWrapper
 , espeak-ng
 }:
diff --git a/pkgs/applications/misc/mupdf/default.nix b/pkgs/applications/misc/mupdf/default.nix
index b54d9dd86157..0a242d50e3e6 100644
--- a/pkgs/applications/misc/mupdf/default.nix
+++ b/pkgs/applications/misc/mupdf/default.nix
@@ -15,7 +15,7 @@
 , libjpeg
 , darwin
 , gumbo
-, enableX11 ? (!stdenv.isDarwin)
+, enableX11 ? (!stdenv.hostPlatform.isDarwin)
 , libX11
 , libXext
 , libXi
@@ -98,16 +98,16 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ]
     ++ lib.optional (enableGL || enableX11) copyDesktopItems
-    ++ lib.optional (stdenv.isDarwin && (enableGL || enableX11)) desktopToDarwinBundle
+    ++ lib.optional (stdenv.hostPlatform.isDarwin && (enableGL || enableX11)) desktopToDarwinBundle
     ++ lib.optionals (enableCxx || enablePython) [ python3 python3.pkgs.setuptools python3.pkgs.libclang ]
     ++ lib.optionals (enablePython) [ which swig ]
-    ++ lib.optionals stdenv.isDarwin [ fixDarwinDylibNames xcbuild ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ fixDarwinDylibNames xcbuild ];
 
   buildInputs = [ freetype harfbuzz openjpeg jbig2dec libjpeg gumbo ]
     ++ lib.optionals enableX11 [ libX11 libXext libXi libXrandr ]
     ++ lib.optionals enableCurl [ curl openssl ]
     ++ lib.optionals enableGL (
-      if stdenv.isDarwin then
+      if stdenv.hostPlatform.isDarwin then
         with darwin.apple_sdk.frameworks; [ GLUT OpenGL ]
       else
         [ freeglut-mupdf libGLU ]
@@ -167,7 +167,7 @@ stdenv.mkDerivation rec {
 
     moveToOutput "bin" "$bin"
     cp ./build/shared-release/libmupdf${stdenv.hostPlatform.extensions.sharedLibrary}* $out/lib
-  '' + (lib.optionalString (stdenv.isDarwin) ''
+  '' + (lib.optionalString (stdenv.hostPlatform.isDarwin) ''
     for exe in $bin/bin/*; do
       install_name_tool -change build/shared-release/libmupdf.dylib $out/lib/libmupdf.dylib "$exe"
     done
@@ -185,7 +185,7 @@ stdenv.mkDerivation rec {
     mkdir -p $out/${python3.sitePackages}/mupdf
     cp build/*/_mupdf.so $out/${python3.sitePackages}
     cp build/*/mupdf.py $out/${python3.sitePackages}/mupdf/__init__.py
-  '' + lib.optionalString (stdenv.isDarwin) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin) ''
     install_name_tool -add_rpath $out/lib $out/${python3.sitePackages}/_mupdf.so
   ''));
 
diff --git a/pkgs/applications/misc/mysql-workbench/default.nix b/pkgs/applications/misc/mysql-workbench/default.nix
index 5591fa9b4533..01df4df5d1c7 100644
--- a/pkgs/applications/misc/mysql-workbench/default.nix
+++ b/pkgs/applications/misc/mysql-workbench/default.nix
@@ -141,7 +141,7 @@ stdenv.mkDerivation (finalAttrs: {
   env.NIX_CFLAGS_COMPILE = toString ([
     # error: 'OGRErr OGRSpatialReference::importFromWkt(char**)' is deprecated
     "-Wno-error=deprecated-declarations"
-  ] ++ lib.optionals stdenv.isAarch64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isAarch64 [
     # error: narrowing conversion of '-1' from 'int' to 'char'
     "-Wno-error=narrowing"
   ] ++ lib.optionals (stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "12") [
diff --git a/pkgs/applications/misc/navi/default.nix b/pkgs/applications/misc/navi/default.nix
index 23abf6a3546e..2d634e99dd15 100644
--- a/pkgs/applications/misc/navi/default.nix
+++ b/pkgs/applications/misc/navi/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ makeWrapper ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   postInstall = ''
     wrapProgram $out/bin/navi \
diff --git a/pkgs/applications/misc/notesnook/default.nix b/pkgs/applications/misc/notesnook/default.nix
index 3753da39a02e..8f3cb528722d 100644
--- a/pkgs/applications/misc/notesnook/default.nix
+++ b/pkgs/applications/misc/notesnook/default.nix
@@ -74,6 +74,6 @@ let
     '';
   };
 in
-if stdenv.isDarwin
+if stdenv.hostPlatform.isDarwin
 then darwin
 else linux
diff --git a/pkgs/applications/misc/obsidian/default.nix b/pkgs/applications/misc/obsidian/default.nix
index 41ddd2cf8d94..e8ffe9f3b877 100644
--- a/pkgs/applications/misc/obsidian/default.nix
+++ b/pkgs/applications/misc/obsidian/default.nix
@@ -23,10 +23,10 @@ let
     maintainers = with maintainers; [ atila conradmearns zaninime qbit kashw2 w-lfchen ];
   };
 
-  filename = if stdenv.isDarwin then "Obsidian-${version}.dmg" else "obsidian-${version}.tar.gz";
+  filename = if stdenv.hostPlatform.isDarwin then "Obsidian-${version}.dmg" else "obsidian-${version}.tar.gz";
   src = fetchurl {
     url = "https://github.com/obsidianmd/obsidian-releases/releases/download/v${version}/${filename}";
-    hash = if stdenv.isDarwin then "sha256-rFXmhlxXlVz5nCrXMmfYGaxe4/wnBRdFxsfiwiIDHgw=" else "sha256-ok1fedN8+OXBisFpVXbKRW2OhE4o9MC9lJmtMMST6V8=";
+    hash = if stdenv.hostPlatform.isDarwin then "sha256-rFXmhlxXlVz5nCrXMmfYGaxe4/wnBRdFxsfiwiIDHgw=" else "sha256-ok1fedN8+OXBisFpVXbKRW2OhE4o9MC9lJmtMMST6V8=";
   };
 
   icon = fetchurl {
@@ -89,4 +89,4 @@ let
     '';
   };
 in
-if stdenv.isDarwin then darwin else linux
+if stdenv.hostPlatform.isDarwin then darwin else linux
diff --git a/pkgs/applications/misc/octoprint/default.nix b/pkgs/applications/misc/octoprint/default.nix
index 18369b8827b5..a241a109091e 100644
--- a/pkgs/applications/misc/octoprint/default.nix
+++ b/pkgs/applications/misc/octoprint/default.nix
@@ -181,8 +181,8 @@ let
               class-doc
               pydantic_1
             ]
-            ++ lib.optionals stdenv.isDarwin [ py.pkgs.appdirs ]
-            ++ lib.optionals (!stdenv.isDarwin) [ octoprint-pisupport ];
+            ++ lib.optionals stdenv.hostPlatform.isDarwin [ py.pkgs.appdirs ]
+            ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ octoprint-pisupport ];
 
           nativeCheckInputs = with self; [
             ddt
@@ -241,7 +241,7 @@ let
 
           disabledTests = [
             "test_check_setup" # Why should it be able to call pip?
-          ] ++ lib.optionals stdenv.isDarwin [ "test_set_external_modification" ];
+          ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_set_external_modification" ];
           disabledTestPaths = [
             "tests/test_octoprint_setuptools.py" # fails due to distutils and python3.12
           ];
diff --git a/pkgs/applications/misc/ola/default.nix b/pkgs/applications/misc/ola/default.nix
index 8d4d4df4ef75..b02a63301fee 100644
--- a/pkgs/applications/misc/ola/default.nix
+++ b/pkgs/applications/misc/ola/default.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Framework for controlling entertainment lighting equipment";
     homepage = "https://www.openlighting.org/ola/";
     maintainers = [ ];
diff --git a/pkgs/applications/misc/openbangla-keyboard/default.nix b/pkgs/applications/misc/openbangla-keyboard/default.nix
index a727bdac62ba..04a9fffcb083 100644
--- a/pkgs/applications/misc/openbangla-keyboard/default.nix
+++ b/pkgs/applications/misc/openbangla-keyboard/default.nix
@@ -86,6 +86,6 @@ stdenv.mkDerivation rec {
     maintainers = with lib.maintainers; [ hqurve ];
     platforms = lib.platforms.linux;
     # never built on aarch64-linux since first introduction in nixpkgs
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/applications/misc/openbox-menu/default.nix b/pkgs/applications/misc/openbox-menu/default.nix
index de3fc6cd0acc..7a9fd06cc295 100644
--- a/pkgs/applications/misc/openbox-menu/default.nix
+++ b/pkgs/applications/misc/openbox-menu/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   patches = [ ./000-enable-svg.patch ];
 
   # The strip options are not recognized by Darwin.
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i -e '/strip -s/d' Makefile
   '';
 
diff --git a/pkgs/applications/misc/opencpn/default.nix b/pkgs/applications/misc/opencpn/default.nix
index 380a88e6f2e0..479fe1bcb076 100644
--- a/pkgs/applications/misc/opencpn/default.nix
+++ b/pkgs/applications/misc/opencpn/default.nix
@@ -57,7 +57,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-axRI3sssj2Q6IBfIeyvOa494b0EgKFP+lFL/QrGIybQ=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i '/fixup_bundle/d; /NO_DEFAULT_PATH/d' CMakeLists.txt
   '';
 
@@ -65,9 +65,9 @@ stdenv.mkDerivation (finalAttrs: {
     cmake
     pkg-config
     gtest
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     lsb-release
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     DarwinTools
     makeWrapper
   ];
@@ -77,7 +77,7 @@ stdenv.mkDerivation (finalAttrs: {
     curl
     dbus
     flac
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     AppKit
   ] ++ [
     gtk3
@@ -105,7 +105,7 @@ stdenv.mkDerivation (finalAttrs: {
     sqlite
     tinyxml
     wxGTK32
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-utils
     libselinux
     libsepol
@@ -114,7 +114,7 @@ stdenv.mkDerivation (finalAttrs: {
     xorg.libXtst
   ] ++ lib.optionals (lib.meta.availableOn stdenv.hostPlatform elfutils) [
     elfutils
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     lame
   ];
 
@@ -124,7 +124,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-DSQUISH_USE_SSE=0"
   ]);
 
-  postInstall = lib.optionals stdenv.isDarwin ''
+  postInstall = lib.optionals stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv $out/bin/OpenCPN.app $out/Applications
     makeWrapper $out/Applications/OpenCPN.app/Contents/MacOS/OpenCPN $out/bin/opencpn
diff --git a/pkgs/applications/misc/oranda/default.nix b/pkgs/applications/misc/oranda/default.nix
index b1326dd592b4..0c5e55efe0ef 100644
--- a/pkgs/applications/misc/oranda/default.nix
+++ b/pkgs/applications/misc/oranda/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     oniguruma
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
@@ -42,7 +42,7 @@ rustPlatform.buildRustPackage rec {
   env = {
     RUSTONIG_SYSTEM_LIBONIG = true;
     ORANDA_USE_TAILWIND_BINARY = true;
-  } // lib.optionalAttrs stdenv.isDarwin {
+  } // lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     # without this, tailwindcss fails with OpenSSL configuration error
     OPENSSL_CONF = "";
   };
diff --git a/pkgs/applications/misc/organicmaps/default.nix b/pkgs/applications/misc/organicmaps/default.nix
index c95ccd139acf..b81f09e1c301 100644
--- a/pkgs/applications/misc/organicmaps/default.nix
+++ b/pkgs/applications/misc/organicmaps/default.nix
@@ -91,7 +91,7 @@ in stdenv.mkDerivation rec {
 
   meta = with lib; {
     # darwin: "invalid application of 'sizeof' to a function type"
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://organicmaps.app/";
     description = "Detailed Offline Maps for Travellers, Tourists, Hikers and Cyclists";
     license = licenses.asl20;
diff --git a/pkgs/applications/misc/p2pool/default.nix b/pkgs/applications/misc/p2pool/default.nix
index 3d537afc1d2b..b8ca97d298ac 100644
--- a/pkgs/applications/misc/p2pool/default.nix
+++ b/pkgs/applications/misc/p2pool/default.nix
@@ -31,11 +31,11 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ libuv zeromq libsodium gss hwloc openssl curl ]
-    ++ lib.optionals stdenv.isDarwin [ Foundation ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Foundation ];
 
   cmakeFlags = ["-DWITH_LTO=OFF"];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13") [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13") [
     "-faligned-allocation"
   ]);
 
diff --git a/pkgs/applications/misc/pastel/default.nix b/pkgs/applications/misc/pastel/default.nix
index e48c0bbcab7b..5164e294a89b 100644
--- a/pkgs/applications/misc/pastel/default.nix
+++ b/pkgs/applications/misc/pastel/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-+Cw/aAXkSbYLqc7TGWsMUJNo88v0s1Cq1m4V84j3gXE=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "Command-line tool to generate, analyze, convert and manipulate colors";
diff --git a/pkgs/applications/misc/pdfpc/default.nix b/pkgs/applications/misc/pdfpc/default.nix
index 2b6e7a0ed88c..cae71f785978 100644
--- a/pkgs/applications/misc/pdfpc/default.nix
+++ b/pkgs/applications/misc/pdfpc/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  cmakeFlags = lib.optional stdenv.isDarwin (lib.cmakeBool "MOVIES" false);
+  cmakeFlags = lib.optional stdenv.hostPlatform.isDarwin (lib.cmakeBool "MOVIES" false);
 
   meta = with lib; {
     description = "Presenter console with multi-monitor support for PDF files";
diff --git a/pkgs/applications/misc/pgmodeler/default.nix b/pkgs/applications/misc/pgmodeler/default.nix
index 6d91a499803c..35777a0b2563 100644
--- a/pkgs/applications/misc/pgmodeler/default.nix
+++ b/pkgs/applications/misc/pgmodeler/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ pkg-config qmake wrapQtAppsHook ];
-  qmakeFlags = [ "pgmodeler.pro" "CONFIG+=release" ] ++ lib.optionals stdenv.isDarwin [
+  qmakeFlags = [ "pgmodeler.pro" "CONFIG+=release" ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "PGSQL_INC=${lib.getDev postgresql}/include"
     "PGSQL_LIB=${lib.getLib postgresql}/lib/libpq.dylib"
     "XML_INC=${libxml2.dev}/include/libxml2"
@@ -33,10 +33,10 @@ stdenv.mkDerivation rec {
 
   # todo: libpq would suffice here. Unfortunately this won't work, if one uses only postgresql.lib here.
   buildInputs = [ postgresql qtsvg ]
-    ++ lib.optionals stdenv.isLinux [ qtwayland ]
-    ++ lib.optionals stdenv.isDarwin [ cups libxml2 ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ qtwayland ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ cups libxml2 ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/bin
     for item in pgmodeler pgmodeler-{cli,se,ch}
     do
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
     done
   '';
 
-  dontWrapQtApps = stdenv.isDarwin;
+  dontWrapQtApps = stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Database modeling tool for PostgreSQL";
diff --git a/pkgs/applications/misc/plover/default.nix b/pkgs/applications/misc/plover/default.nix
index 3f4e82d2e4d9..65161d713f29 100644
--- a/pkgs/applications/misc/plover/default.nix
+++ b/pkgs/applications/misc/plover/default.nix
@@ -8,7 +8,7 @@
     version = "4.0.0.dev10";
 
     meta = with lib; {
-      broken = stdenv.isDarwin;
+      broken = stdenv.hostPlatform.isDarwin;
       description = "OpenSteno Plover stenography software";
       maintainers = with maintainers; [ twey kovirobi ];
       license     = licenses.gpl2;
diff --git a/pkgs/applications/misc/pomodoro/default.nix b/pkgs/applications/misc/pomodoro/default.nix
index 77774b5343a5..d9f76a75451b 100644
--- a/pkgs/applications/misc/pomodoro/default.nix
+++ b/pkgs/applications/misc/pomodoro/default.nix
@@ -12,7 +12,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   cargoHash = "sha256-6ZhWStZebXSwrej36DXifrsrmR1SWW3PwGUX0hqPwE4=";
-  buildInputs = lib.optionals stdenv.isDarwin [ Foundation ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Foundation ];
 
   meta = with lib; {
     description = "Simple CLI pomodoro timer using desktop notifications written in Rust";
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
     license = licenses.mit;
     maintainers = with maintainers; [ annaaurora ];
     # error: redefinition of module 'ObjectiveC'
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "pomodoro";
   };
 }
diff --git a/pkgs/applications/misc/porsmo/default.nix b/pkgs/applications/misc/porsmo/default.nix
index f741ad2d6b48..6d9ed5ee2c98 100644
--- a/pkgs/applications/misc/porsmo/default.nix
+++ b/pkgs/applications/misc/porsmo/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     alsa-lib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreAudio
     darwin.apple_sdk.frameworks.CoreFoundation
   ];
diff --git a/pkgs/applications/misc/process-viewer/default.nix b/pkgs/applications/misc/process-viewer/default.nix
index ef2b9fec3adb..10f55aced9ea 100644
--- a/pkgs/applications/misc/process-viewer/default.nix
+++ b/pkgs/applications/misc/process-viewer/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ gtk4 ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ gtk4 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Foundation
   ];
 
diff --git a/pkgs/applications/misc/prusa-slicer/default.nix b/pkgs/applications/misc/prusa-slicer/default.nix
index 159b0e0aebc5..ecce3066ed5b 100644
--- a/pkgs/applications/misc/prusa-slicer/default.nix
+++ b/pkgs/applications/misc/prusa-slicer/default.nix
@@ -128,7 +128,7 @@ stdenv.mkDerivation (finalAttrs: {
     catch2
   ] ++ lib.optionals withSystemd [
     systemd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.CoreWLAN
   ];
 
@@ -210,7 +210,7 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.agpl3Plus;
     maintainers = with maintainers; [ moredread tweber tmarkus ];
     platforms = platforms.unix;
-  } // lib.optionalAttrs (stdenv.isDarwin) {
+  } // lib.optionalAttrs (stdenv.hostPlatform.isDarwin) {
     mainProgram = "PrusaSlicer";
   };
 })
diff --git a/pkgs/applications/misc/pueue/default.nix b/pkgs/applications/misc/pueue/default.nix
index 173323f58975..1eff0355412c 100644
--- a/pkgs/applications/misc/pueue/default.nix
+++ b/pkgs/applications/misc/pueue/default.nix
@@ -23,11 +23,11 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [
     installShellFiles
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     rustPlatform.bindgenHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Libsystem
     SystemConfiguration
     libiconv
diff --git a/pkgs/applications/misc/pwsafe/default.nix b/pkgs/applications/misc/pwsafe/default.nix
index dc2de8b0cd73..b2856cb7978e 100644
--- a/pkgs/applications/misc/pwsafe/default.nix
+++ b/pkgs/applications/misc/pwsafe/default.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
     openssl
     xercesc
     file
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libXext
     libXi
     libXt
@@ -63,14 +63,14 @@ stdenv.mkDerivation rec {
     libuuid
     libyubikey
     yubikey-personalization
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ];
 
   cmakeFlags = [
     "-DNO_GTEST=ON"
     "-DCMAKE_CXX_FLAGS=-I${yubikey-personalization}/include/ykpers-1"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DNO_YUBI=ON"
   ];
 
@@ -91,7 +91,7 @@ stdenv.mkDerivation rec {
     for f in $(grep -Rl /usr/bin/ .) ; do
       substituteInPlace $f --replace /usr/bin/ ""
     done
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/ui/cli/CMakeLists.txt --replace "uuid" ""
   '';
 
diff --git a/pkgs/applications/misc/qMasterPassword/default.nix b/pkgs/applications/misc/qMasterPassword/default.nix
index a28e8d588693..806d1df05fc4 100644
--- a/pkgs/applications/misc/qMasterPassword/default.nix
+++ b/pkgs/applications/misc/qMasterPassword/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
 
   # Upstream install is mostly defunct. It hardcodes target.path and doesn't
   # install anything but the binary.
-  installPhase = if stdenv.isDarwin then ''
+  installPhase = if stdenv.hostPlatform.isDarwin then ''
     mkdir -p "$out"/{Applications,bin}
     mv qMasterPassword.app "$out"/Applications/
     ln -s ../Applications/qMasterPassword.app/Contents/MacOS/qMasterPassword "$out"/bin/qMasterPassword
diff --git a/pkgs/applications/misc/qcad/default.nix b/pkgs/applications/misc/qcad/default.nix
index b94b8326dca3..6bffbda0a01b 100644
--- a/pkgs/applications/misc/qcad/default.nix
+++ b/pkgs/applications/misc/qcad/default.nix
@@ -57,7 +57,7 @@ mkDerivation rec {
     qtscript
     qtsvg
     qtxmlpatterns
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     qtmacextras
   ];
 
@@ -68,17 +68,17 @@ mkDerivation rec {
     "QMAKE_CXXFLAGS=-std=c++14"
   ];
 
-  qtWrapperArgs = lib.optionals stdenv.isLinux [
+  qtWrapperArgs = lib.optionals stdenv.hostPlatform.isLinux [
     "--prefix LD_LIBRARY_PATH : ${placeholder "out"}/lib"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--prefix DYLD_LIBRARY_PATH : ${placeholder "out"}/lib"
   ];
 
   installPhase = ''
     runHook preInstall
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     install -Dm555 release/qcad-bin $out/bin/qcad
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install -Dm555 release/QCAD.app/Contents/MacOS/QCAD $out/bin/qcad
     mkdir -p $out/lib
   '' + ''
diff --git a/pkgs/applications/misc/qelectrotech/default.nix b/pkgs/applications/misc/qelectrotech/default.nix
index b4d8bd3ab182..705618bd2f01 100644
--- a/pkgs/applications/misc/qelectrotech/default.nix
+++ b/pkgs/applications/misc/qelectrotech/default.nix
@@ -74,6 +74,6 @@ mkDerivation rec {
     license = licenses.gpl2;
     maintainers = with maintainers; [ yvesf ];
     platforms = qtbase.meta.platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/misc/qolibri/default.nix b/pkgs/applications/misc/qolibri/default.nix
index 0439e212d112..4b8213d46d60 100644
--- a/pkgs/applications/misc/qolibri/default.nix
+++ b/pkgs/applications/misc/qolibri/default.nix
@@ -59,7 +59,7 @@ stdenv.mkDerivation {
     license = licenses.gpl2;
     maintainers = with maintainers; [ azahi ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin && stdenv.isx86_64; # Looks like a libcxx version mismatch problem.
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64; # Looks like a libcxx version mismatch problem.
     mainProgram = "qolibri";
   };
 }
diff --git a/pkgs/applications/misc/qsyncthingtray/default.nix b/pkgs/applications/misc/qsyncthingtray/default.nix
index 2fa22cf73221..68baf5e08ebb 100644
--- a/pkgs/applications/misc/qsyncthingtray/default.nix
+++ b/pkgs/applications/misc/qsyncthingtray/default.nix
@@ -31,13 +31,13 @@ mkDerivation rec {
   }) ] ++ lib.optional (!preferQWebView && !preferNative) ./qsyncthingtray-0.5.8-qt-5.6.3.patch;
 
   postPatch = ''
-    ${lib.optionalString stdenv.isLinux ''
+    ${lib.optionalString stdenv.hostPlatform.isLinux ''
       substituteInPlace includes/platforms/linux/posixUtils.hpp \
         --replace '"/usr/local/bin/syncthing"'         '"${syncthing}/bin/syncthing"' \
         --replace '"pgrep -x'                          '"${procps}/bin/pgrep -x'
     ''}
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace includes/platforms/darwin/macUtils.hpp \
         --replace '"/usr/local/bin/syncthing"'         '"${syncthing}/bin/syncthing"'
     ''}
@@ -64,6 +64,6 @@ mkDerivation rec {
     license = licenses.lgpl3;
     maintainers = with maintainers; [ zraexy peterhoeg ];
     platforms = platforms.all;
-    broken = !preferNative || stdenv.isDarwin;
+    broken = !preferNative || stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/misc/reddsaver/default.nix b/pkgs/applications/misc/reddsaver/default.nix
index b737716ed5d3..c544dc44888f 100644
--- a/pkgs/applications/misc/reddsaver/default.nix
+++ b/pkgs/applications/misc/reddsaver/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ openssl ]
-    ++ lib.optional stdenv.isDarwin Security;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # package does not contain tests as of v0.3.3
   docCheck = false;
diff --git a/pkgs/applications/misc/redshift/default.nix b/pkgs/applications/misc/redshift/default.nix
index 41a21e8f49ed..6451fa2c7acf 100644
--- a/pkgs/applications/misc/redshift/default.nix
+++ b/pkgs/applications/misc/redshift/default.nix
@@ -3,15 +3,15 @@
 , libtool, pkg-config, wrapGAppsHook3, wrapPython, gobject-introspection, wayland-scanner
 , gtk3, python, pygobject3, pyxdg
 
-, withQuartz ? stdenv.isDarwin, ApplicationServices
-, withRandr ? stdenv.isLinux, libxcb
-, withDrm ? stdenv.isLinux, libdrm
-, withVidmode ? stdenv.isLinux, libXxf86vm
+, withQuartz ? stdenv.hostPlatform.isDarwin, ApplicationServices
+, withRandr ? stdenv.hostPlatform.isLinux, libxcb
+, withDrm ? stdenv.hostPlatform.isLinux, libdrm
+, withVidmode ? stdenv.hostPlatform.isLinux, libXxf86vm
 
 , withGeolocation ? true
-, withCoreLocation ? withGeolocation && stdenv.isDarwin, CoreLocation, Foundation, Cocoa
-, withGeoclue ? withGeolocation && stdenv.isLinux, geoclue
-, withAppIndicator ? stdenv.isLinux, libappindicator, libayatana-appindicator
+, withCoreLocation ? withGeolocation && stdenv.hostPlatform.isDarwin, CoreLocation, Foundation, Cocoa
+, withGeoclue ? withGeolocation && stdenv.hostPlatform.isLinux, geoclue
+, withAppIndicator ? stdenv.hostPlatform.isLinux, libappindicator, libayatana-appindicator
 }:
 
 let
diff --git a/pkgs/applications/misc/rtfm/default.nix b/pkgs/applications/misc/rtfm/default.nix
index 53ad4f9aea9e..655dd90fdb34 100644
--- a/pkgs/applications/misc/rtfm/default.nix
+++ b/pkgs/applications/misc/rtfm/default.nix
@@ -52,7 +52,7 @@ crystal.buildCrystalPackage rec {
   nativeBuildInputs = [
     wrapGAppsHook4
     gobject-introspection
-  ] ++ lib.optionals stdenv.isDarwin [ desktopToDarwinBundle ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ desktopToDarwinBundle ];
 
   buildInputs = [
     webkitgtk_6_0
diff --git a/pkgs/applications/misc/rust-traverse/default.nix b/pkgs/applications/misc/rust-traverse/default.nix
index 7d0e072ee36b..ffe101847105 100644
--- a/pkgs/applications/misc/rust-traverse/default.nix
+++ b/pkgs/applications/misc/rust-traverse/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     bzip2
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Foundation
   ];
 
diff --git a/pkgs/applications/misc/safecloset/default.nix b/pkgs/applications/misc/safecloset/default.nix
index ce774e5a668f..d173777bc3bc 100644
--- a/pkgs/applications/misc/safecloset/default.nix
+++ b/pkgs/applications/misc/safecloset/default.nix
@@ -19,9 +19,9 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-rxNp9dOvy/UTx6Q9pzZGccEKmIiWxzWVYyMxb+h5bqw=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     xorg.libxcb
   ];
 
diff --git a/pkgs/applications/misc/sampler/default.nix b/pkgs/applications/misc/sampler/default.nix
index a111142bbde4..7ee3d4573d9a 100644
--- a/pkgs/applications/misc/sampler/default.nix
+++ b/pkgs/applications/misc/sampler/default.nix
@@ -25,8 +25,8 @@ buildGoModule rec {
 
   subPackages = [ "." ];
 
-  buildInputs = lib.optional stdenv.isLinux alsa-lib
-    ++ lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux alsa-lib
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.OpenAL
   ];
 
diff --git a/pkgs/applications/misc/senv/default.nix b/pkgs/applications/misc/senv/default.nix
index b542966e828a..999b140c5fe2 100644
--- a/pkgs/applications/misc/senv/default.nix
+++ b/pkgs/applications/misc/senv/default.nix
@@ -20,7 +20,7 @@ buildGoModule rec {
     homepage = "https://github.com/SpectralOps/senv";
     license = licenses.mit;
     maintainers = with maintainers; [ SuperSandro2000 ];
-    broken = stdenv.isDarwin; # needs golang.org/x/sys bump
+    broken = stdenv.hostPlatform.isDarwin; # needs golang.org/x/sys bump
     mainProgram = "senv";
   };
 }
diff --git a/pkgs/applications/misc/sigal/default.nix b/pkgs/applications/misc/sigal/default.nix
index 1e82fce07898..d9b4c4cfd53b 100644
--- a/pkgs/applications/misc/sigal/default.nix
+++ b/pkgs/applications/misc/sigal/default.nix
@@ -41,7 +41,7 @@ python3.pkgs.buildPythonApplication rec {
     pytestCheckHook
   ]);
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     "test_nonmedia_files"
   ];
 
diff --git a/pkgs/applications/misc/sioyek/default.nix b/pkgs/applications/misc/sioyek/default.nix
index ab853d4dc1f4..64faccf6811c 100644
--- a/pkgs/applications/misc/sioyek/default.nix
+++ b/pkgs/applications/misc/sioyek/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation (finalAttrs: {
     qt3d
     qtbase
   ]
-  ++ lib.optionals stdenv.isDarwin [ freetype ];
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ freetype ];
 
   nativeBuildInputs = [
     installShellFiles
@@ -54,7 +54,7 @@ stdenv.mkDerivation (finalAttrs: {
     wrapQtAppsHook
   ];
 
-  qmakeFlags = lib.optionals stdenv.isDarwin [ "CONFIG+=non_portable" ];
+  qmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "CONFIG+=non_portable" ];
 
   postPatch = ''
     substituteInPlace pdf_viewer_build_config.pro \
@@ -65,7 +65,7 @@ stdenv.mkDerivation (finalAttrs: {
       --replace "/etc/sioyek" "$out/etc"
   '';
 
-  postInstall = if stdenv.isDarwin then ''
+  postInstall = if stdenv.hostPlatform.isDarwin then ''
     cp -r pdf_viewer/shaders sioyek.app/Contents/MacOS/shaders
     cp pdf_viewer/prefs.config sioyek.app/Contents/MacOS/
     cp pdf_viewer/prefs_user.config sioyek.app/Contents/MacOS/
diff --git a/pkgs/applications/misc/slippy/default.nix b/pkgs/applications/misc/slippy/default.nix
index cf5cd1ff0b3d..a7e6a75a7a7e 100644
--- a/pkgs/applications/misc/slippy/default.nix
+++ b/pkgs/applications/misc/slippy/default.nix
@@ -49,7 +49,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/applications/misc/snagboot/default.nix b/pkgs/applications/misc/snagboot/default.nix
index 11f49d8506b5..3a663443513c 100644
--- a/pkgs/applications/misc/snagboot/default.nix
+++ b/pkgs/applications/misc/snagboot/default.nix
@@ -39,7 +39,7 @@ python3.pkgs.buildPythonApplication rec {
     tftpy
   ];
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     rules="src/snagrecover/50-snagboot.rules"
     if [ ! -f "$rules" ]; then
         echo "$rules is missing, must update the Nix file."
diff --git a/pkgs/applications/misc/stork/default.nix b/pkgs/applications/misc/stork/default.nix
index 0de395549bdd..4441508e0be8 100644
--- a/pkgs/applications/misc/stork/default.nix
+++ b/pkgs/applications/misc/stork/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "Impossibly fast web search, made for static sites";
diff --git a/pkgs/applications/misc/stw/default.nix b/pkgs/applications/misc/stw/default.nix
index 689fc9e81ce7..5f36e1e1126c 100644
--- a/pkgs/applications/misc/stw/default.nix
+++ b/pkgs/applications/misc/stw/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     maintainers = with maintainers; [ somasis ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "stw";
   };
 }
diff --git a/pkgs/applications/misc/survex/default.nix b/pkgs/applications/misc/survex/default.nix
index 2bb4184b4353..bfb79fd10b93 100644
--- a/pkgs/applications/misc/survex/default.nix
+++ b/pkgs/applications/misc/survex/default.nix
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
   '';
 
   enableParallelBuilding = true;
-  doCheck = (!stdenv.isDarwin); # times out
+  doCheck = (!stdenv.hostPlatform.isDarwin); # times out
   enableParallelChecking = false;
 
   meta = with lib; {
diff --git a/pkgs/applications/misc/syncthingtray/default.nix b/pkgs/applications/misc/syncthingtray/default.nix
index a993a57deb40..3d0cbe7198c2 100644
--- a/pkgs/applications/misc/syncthingtray/default.nix
+++ b/pkgs/applications/misc/syncthingtray/default.nix
@@ -22,9 +22,9 @@
 , xdg-utils
 , webviewSupport ? true
 , jsSupport ? true
-, kioPluginSupport ? stdenv.isLinux
-, plasmoidSupport  ? stdenv.isLinux
-, systemdSupport ? stdenv.isLinux
+, kioPluginSupport ? stdenv.hostPlatform.isLinux
+, plasmoidSupport  ? stdenv.hostPlatform.isLinux
+, systemdSupport ? stdenv.hostPlatform.isLinux
 /* It is possible to set via this option an absolute exec path that will be
 written to the `~/.config/autostart/syncthingtray.desktop` file generated
 during runtime. Alternatively, one can edit the desktop file themselves after
@@ -52,8 +52,8 @@ stdenv.mkDerivation (finalAttrs: {
     qtutilities
     boost
     qtforkawesome
-  ] ++ lib.optionals stdenv.isDarwin [ iconv ]
-    ++ lib.optionals stdenv.isLinux [ qtwayland ]
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ iconv ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ qtwayland ]
     ++ lib.optionals webviewSupport [ qtwebengine ]
     ++ lib.optionals jsSupport [ qtdeclarative ]
     ++ lib.optionals kioPluginSupport [ kio ]
@@ -74,12 +74,12 @@ stdenv.mkDerivation (finalAttrs: {
   ;
 
   # syncthing server seems to hang on darwin, causing tests to fail.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   preCheck = ''
     export QT_QPA_PLATFORM=offscreen
     export QT_PLUGIN_PATH="${lib.getBin qtbase}/${qtbase.qtPluginPrefix}"
   '';
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # put the app bundle into the proper place /Applications instead of /bin
     mkdir -p $out/Applications
     mv $out/bin/syncthingtray.app $out/Applications
diff --git a/pkgs/applications/misc/synergy/default.nix b/pkgs/applications/misc/synergy/default.nix
index fe15ce3b98b0..7db338b16897 100644
--- a/pkgs/applications/misc/synergy/default.nix
+++ b/pkgs/applications/misc/synergy/default.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
   postPatch = ''
     substituteInPlace src/gui/src/SslCertificate.cpp \
       --replace 'kUnixOpenSslCommand[] = "openssl";' 'kUnixOpenSslCommand[] = "${openssl}/bin/openssl";'
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace src/lib/synergy/unix/AppUtilUnix.cpp \
       --replace "/usr/share/X11/xkb/rules/evdev.xml" "${xkeyboardconfig}/share/X11/xkb/rules/evdev.xml"
   '';
@@ -69,14 +69,14 @@ stdenv.mkDerivation rec {
     qttools # Used for translations even when not building the GUI
     openssl
     pcre
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ApplicationServices
     Carbon
     Cocoa
     CoreServices
     ScreenSaver
     UserNotifications
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     util-linux
     libselinux
     libsepol
@@ -95,17 +95,17 @@ stdenv.mkDerivation rec {
   ];
 
   # Silences many warnings
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-inconsistent-missing-override";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-inconsistent-missing-override";
 
   cmakeFlags = lib.optional (!withGUI) "-DSYNERGY_BUILD_LEGACY_GUI=OFF"
     # NSFilenamesPboardType is deprecated in 10.14+
-    ++ lib.optional stdenv.isDarwin "-DCMAKE_OSX_DEPLOYMENT_TARGET=${if stdenv.isAarch64 then "10.13" else stdenv.hostPlatform.darwinSdkVersion}";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "-DCMAKE_OSX_DEPLOYMENT_TARGET=${if stdenv.hostPlatform.isAarch64 then "10.13" else stdenv.hostPlatform.darwinSdkVersion}";
 
   doCheck = true;
 
   checkPhase = ''
     runHook preCheck
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # filter out tests failing with sandboxing on darwin
     export GTEST_FILTER=-ServerConfigTests.serverconfig_will_deem_equal_configs_with_same_cell_names:NetworkAddress.hostname_valid_parsing
   '' + ''
@@ -120,12 +120,12 @@ stdenv.mkDerivation rec {
     cp bin/{synergyc,synergys,synergyd,syntool} $out/bin/
   '' + lib.optionalString withGUI ''
     cp bin/synergy $out/bin/
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     mkdir -p $out/share/{applications,icons/hicolor/scalable/apps}
     cp ../res/synergy.svg $out/share/icons/hicolor/scalable/apps/
     substitute ../res/synergy.desktop $out/share/applications/synergy.desktop \
       --replace "/usr/bin" "$out/bin"
-  '' + lib.optionalString (stdenv.isDarwin && withGUI) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && withGUI) ''
     mkdir -p $out/Applications
     cp -r bundle/Synergy.app $out/Applications
     ln -s $out/bin $out/Applications/Synergy.app/Contents/MacOS
diff --git a/pkgs/applications/misc/taizen/default.nix b/pkgs/applications/misc/taizen/default.nix
index 903de3c05c1d..30bb445089f5 100644
--- a/pkgs/applications/misc/taizen/default.nix
+++ b/pkgs/applications/misc/taizen/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     ncurses
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/applications/misc/terminal-typeracer/default.nix b/pkgs/applications/misc/terminal-typeracer/default.nix
index 80ece5bded7a..ec2cda0c164c 100644
--- a/pkgs/applications/misc/terminal-typeracer/default.nix
+++ b/pkgs/applications/misc/terminal-typeracer/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ libgit2 openssl sqlite ] ++ lib.optionals stdenv.isDarwin [ libiconv Security ];
+  buildInputs = [ libgit2 openssl sqlite ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security ];
 
   OPENSSL_NO_VENDOR = 1;
   LIBGIT2_NO_VENDOR = 1;
diff --git a/pkgs/applications/misc/tickrs/default.nix b/pkgs/applications/misc/tickrs/default.nix
index f2cc437ab9b6..4e789f2f8ec7 100644
--- a/pkgs/applications/misc/tickrs/default.nix
+++ b/pkgs/applications/misc/tickrs/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/applications/misc/translatelocally/default.nix b/pkgs/applications/misc/translatelocally/default.nix
index 2749a7ec1566..d99579a5f2a6 100644
--- a/pkgs/applications/misc/translatelocally/default.nix
+++ b/pkgs/applications/misc/translatelocally/default.nix
@@ -28,7 +28,7 @@ in stdenv.mkDerivation (finalAttrs: {
   '';
 
   # https://github.com/XapaJIaMnu/translateLocally/blob/81ed8b9/.github/workflows/build.yml#L330
-  postConfigure = lib.optionalString stdenv.isAarch64 ''
+  postConfigure = lib.optionalString stdenv.hostPlatform.isAarch64 ''
     bash ../cmake/fix_ruy_build.sh .. .
   '';
 
diff --git a/pkgs/applications/misc/tthsum/default.nix b/pkgs/applications/misc/tthsum/default.nix
index 603ddeca4fd7..e2b9d2e57041 100644
--- a/pkgs/applications/misc/tthsum/default.nix
+++ b/pkgs/applications/misc/tthsum/default.nix
@@ -15,10 +15,10 @@ stdenv.mkDerivation rec {
     cp obj-unix/tthsum $out/bin
   '';
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Md5sum-alike program that works with Tiger/THEX hashes";
     longDescription = ''
       tthsum generates or checks TTH checksums (root of the THEX hash
diff --git a/pkgs/applications/misc/tui-journal/default.nix b/pkgs/applications/misc/tui-journal/default.nix
index 499cf576c314..a4305dbd1769 100644
--- a/pkgs/applications/misc/tui-journal/default.nix
+++ b/pkgs/applications/misc/tui-journal/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
     libgit2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/applications/misc/ubpm/default.nix b/pkgs/applications/misc/ubpm/default.nix
index f2c0a9aa02e8..883850f10b13 100644
--- a/pkgs/applications/misc/ubpm/default.nix
+++ b/pkgs/applications/misc/ubpm/default.nix
@@ -43,6 +43,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "ubpm";
     license = licenses.gpl3Only;
     maintainers = with maintainers; [ kurnevsky ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/applications/misc/udict/default.nix b/pkgs/applications/misc/udict/default.nix
index 24424c1017db..42f2585ec439 100644
--- a/pkgs/applications/misc/udict/default.nix
+++ b/pkgs/applications/misc/udict/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/applications/misc/usb-reset/default.nix b/pkgs/applications/misc/usb-reset/default.nix
index 0e924ba5ee67..a5bb2061ed50 100644
--- a/pkgs/applications/misc/usb-reset/default.nix
+++ b/pkgs/applications/misc/usb-reset/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Perform a bus reset on a USB device using its vendor and product ID";
     homepage = "https://github.com/ralight/usb-reset";
     changelog = "https://github.com/ralight/usb-reset/blob/master/ChangeLog.txt";
diff --git a/pkgs/applications/misc/vhs/default.nix b/pkgs/applications/misc/vhs/default.nix
index 368a8163657b..12e14f212f7d 100644
--- a/pkgs/applications/misc/vhs/default.nix
+++ b/pkgs/applications/misc/vhs/default.nix
@@ -18,7 +18,7 @@ buildGoModule rec {
   ldflags = [ "-s" "-w" "-X=main.Version=${version}" ];
 
   postInstall = ''
-    wrapProgram $out/bin/vhs --prefix PATH : ${lib.makeBinPath (lib.optionals stdenv.isLinux [ chromium ] ++ [ ffmpeg ttyd ])}
+    wrapProgram $out/bin/vhs --prefix PATH : ${lib.makeBinPath (lib.optionals stdenv.hostPlatform.isLinux [ chromium ] ++ [ ffmpeg ttyd ])}
     $out/bin/vhs man > vhs.1
     installManPage vhs.1
     installShellCompletion --cmd vhs \
diff --git a/pkgs/applications/misc/viking/default.nix b/pkgs/applications/misc/viking/default.nix
index 1335d950405f..cb3ab09e31bc 100644
--- a/pkgs/applications/misc/viking/default.nix
+++ b/pkgs/applications/misc/viking/default.nix
@@ -10,7 +10,7 @@
 , withMBTiles ? true, sqlite
 , withMd5Hash ? true, nettle
 , withOAuth ? true, liboauth
-, withRealtimeGPSTracking ? (!stdenv.isDarwin), gpsd
+, withRealtimeGPSTracking ? (!stdenv.hostPlatform.isDarwin), gpsd
 }:
 
 stdenv.mkDerivation rec {
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ docbook_xml_dtd_45 docbook_xsl intltool itstool libxslt pkg-config wrapGAppsHook3 yelp-tools ]
-    ++ lib.optional stdenv.isDarwin desktopToDarwinBundle;
+    ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   buildInputs = [ curl gdk-pixbuf gtk3 json-glib libxml2 ]
     ++ lib.optional withGeoClue geoclue2
diff --git a/pkgs/applications/misc/visidata/default.nix b/pkgs/applications/misc/visidata/default.nix
index cb6033fa4b62..d7a7c4d9f75f 100644
--- a/pkgs/applications/misc/visidata/default.nix
+++ b/pkgs/applications/misc/visidata/default.nix
@@ -40,7 +40,7 @@
 # other
 , git
 , withPcap ? true, dpkt, dnslib
-, withXclip ? stdenv.isLinux, xclip
+, withXclip ? stdenv.hostPlatform.isLinux, xclip
 , testers
 , visidata
 }:
diff --git a/pkgs/applications/misc/wordnet/default.nix b/pkgs/applications/misc/wordnet/default.nix
index fccd7585e41e..5ed42ab1fc29 100644
--- a/pkgs/applications/misc/wordnet/default.nix
+++ b/pkgs/applications/misc/wordnet/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ makeWrapper ];
   buildInputs = [ tcl tk ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   hardeningDisable = [ "format" ];
 
diff --git a/pkgs/applications/misc/workrave/default.nix b/pkgs/applications/misc/workrave/default.nix
index a0521d443937..869f7c63712c 100644
--- a/pkgs/applications/misc/workrave/default.nix
+++ b/pkgs/applications/misc/workrave/default.nix
@@ -85,7 +85,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Program to help prevent Repetitive Strain Injury";
     mainProgram = "workrave";
     longDescription = ''
diff --git a/pkgs/applications/misc/wthrr/default.nix b/pkgs/applications/misc/wthrr/default.nix
index 142d331be9f7..df95d41738e4 100644
--- a/pkgs/applications/misc/wthrr/default.nix
+++ b/pkgs/applications/misc/wthrr/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/applications/misc/xmrig/default.nix b/pkgs/applications/misc/xmrig/default.nix
index 2cea4d2dd45c..9b46c65b8003 100644
--- a/pkgs/applications/misc/xmrig/default.nix
+++ b/pkgs/applications/misc/xmrig/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
     libmicrohttpd
     openssl
     hwloc
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Carbon
     CoreServices
     OpenCL
diff --git a/pkgs/applications/misc/xmrig/proxy.nix b/pkgs/applications/misc/xmrig/proxy.nix
index fb69b92e8fe1..9efdbc700a64 100644
--- a/pkgs/applications/misc/xmrig/proxy.nix
+++ b/pkgs/applications/misc/xmrig/proxy.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
     libuv
     libmicrohttpd
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     IOKit
   ];
diff --git a/pkgs/applications/misc/xpdf/default.nix b/pkgs/applications/misc/xpdf/default.nix
index 2315810e03ff..13b4097f8cdf 100644
--- a/pkgs/applications/misc/xpdf/default.nix
+++ b/pkgs/applications/misc/xpdf/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   # Fix "No known features for CXX compiler", see
   # https://cmake.org/pipermail/cmake/2016-December/064733.html and the note at
   # https://cmake.org/cmake/help/v3.10/command/cmake_minimum_required.html
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace CMakeLists.txt --replace \
         'cmake_minimum_required(VERSION 2.8.12)' 'cmake_minimum_required(VERSION 3.1.0)'
     '';
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
     categories = [ "Office" ];
   };
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     install -Dm644 ${desktopItem}/share/applications/xpdf.desktop -t $out/share/applications
     install -Dm644 $src/xpdf-qt/xpdf-icon.svg $out/share/pixmaps/xpdf.svg
   '';
diff --git a/pkgs/applications/misc/xygrib/default.nix b/pkgs/applications/misc/xygrib/default.nix
index 4ce68f77e25b..32605747399a 100644
--- a/pkgs/applications/misc/xygrib/default.nix
+++ b/pkgs/applications/misc/xygrib/default.nix
@@ -14,10 +14,10 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake qttools wrapQtAppsHook ];
   buildInputs = [ bzip2 qtbase libnova proj_7 openjpeg libpng ];
   cmakeFlags = [ "-DOPENJPEG_INCLUDE_DIR=${openjpeg.dev}/include/openjpeg-${lib.versions.majorMinor openjpeg.version}" ]
-    ++ lib.optionals stdenv.isDarwin [ "-DLIBNOVA_LIBRARY=${libnova}/lib/libnova.dylib" ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "-DLIBNOVA_LIBRARY=${libnova}/lib/libnova.dylib" ];
 
   postInstall =
-    if stdenv.isDarwin then ''
+    if stdenv.hostPlatform.isDarwin then ''
       mkdir -p "$out/Applications" "$out/XyGrib/XyGrib.app/Contents/Resources"
       cp "../data/img/xyGrib.icns" "$out/XyGrib/XyGrib.app/Contents/Resources/xyGrib.icns"
       mv $out/XyGrib/XyGrib.app $out/Applications
diff --git a/pkgs/applications/misc/zathura/core/default.nix b/pkgs/applications/misc/zathura/core/default.nix
index c2a4abacb50e..4aff5303ee18 100644
--- a/pkgs/applications/misc/zathura/core/default.nix
+++ b/pkgs/applications/misc/zathura/core/default.nix
@@ -90,9 +90,9 @@ stdenv.mkDerivation (finalAttrs: {
     check
     json-glib
     texlive.bin.core
-  ] ++ lib.optional stdenv.isLinux libseccomp ++ lib.optional stdenv.isDarwin gtk-mac-integration;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux libseccomp ++ lib.optional stdenv.hostPlatform.isDarwin gtk-mac-integration;
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   passthru.updateScript = gitUpdater { };
 
diff --git a/pkgs/applications/misc/zathura/pdf-mupdf/default.nix b/pkgs/applications/misc/zathura/pdf-mupdf/default.nix
index b49371b24dea..f0fd28d4a444 100644
--- a/pkgs/applications/misc/zathura/pdf-mupdf/default.nix
+++ b/pkgs/applications/misc/zathura/pdf-mupdf/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation (finalAttrs: {
     tesseract
     leptonica
     mujs
-  ] ++ lib.optional stdenv.isDarwin gtk-mac-integration;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin gtk-mac-integration;
 
   env.PKG_CONFIG_ZATHURA_PLUGINDIR = "lib/zathura";
 
diff --git a/pkgs/applications/misc/zine/default.nix b/pkgs/applications/misc/zine/default.nix
index c7fb80e8318b..40d8b6160365 100644
--- a/pkgs/applications/misc/zine/default.nix
+++ b/pkgs/applications/misc/zine/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/applications/networking/adguardian/default.nix b/pkgs/applications/networking/adguardian/default.nix
index 21123d47e5d1..425974fee511 100644
--- a/pkgs/applications/networking/adguardian/default.nix
+++ b/pkgs/applications/networking/adguardian/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-IPkKiXuFN0KFlcrrSjLmML+O5zCrVRKEqdyV2xBsCsg=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/applications/networking/avalanchego/default.nix b/pkgs/applications/networking/avalanchego/default.nix
index a845bb2bfdd8..97bf552604d4 100644
--- a/pkgs/applications/networking/avalanchego/default.nix
+++ b/pkgs/applications/networking/avalanchego/default.nix
@@ -20,7 +20,7 @@ buildGoModule rec {
   # go mod vendor has a bug, see: https://github.com/golang/go/issues/57529
   proxyVendor = true;
 
-  buildInputs = lib.optionals stdenv.isDarwin [ IOKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ IOKit ];
 
   subPackages = [ "main" ];
 
diff --git a/pkgs/applications/networking/browsers/asuka/default.nix b/pkgs/applications/networking/browsers/asuka/default.nix
index 1451e4bbaabd..786f11d2d743 100644
--- a/pkgs/applications/networking/browsers/asuka/default.nix
+++ b/pkgs/applications/networking/browsers/asuka/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ ncurses openssl ]
-    ++ lib.optional stdenv.isDarwin Security;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "Gemini Project client written in Rust with NCurses";
diff --git a/pkgs/applications/networking/browsers/brave/default.nix b/pkgs/applications/networking/browsers/brave/default.nix
index 1dddb46519fc..af50ac1b7593 100644
--- a/pkgs/applications/networking/browsers/brave/default.nix
+++ b/pkgs/applications/networking/browsers/brave/default.nix
@@ -3,7 +3,7 @@
 
 callPackage ./make-brave.nix (removeAttrs args [ "callPackage" ])
   (
-    if stdenv.isAarch64 then
+    if stdenv.hostPlatform.isAarch64 then
       rec {
         pname = "brave";
         version = "1.70.117";
@@ -11,7 +11,7 @@ callPackage ./make-brave.nix (removeAttrs args [ "callPackage" ])
         hash = "sha256-FUomXWnIbuW8H0/r+fKEmMG8qO0vBAKUS9kijCbH5Mc=";
         platform = "aarch64-linux";
       }
-    else if stdenv.isx86_64 then
+    else if stdenv.hostPlatform.isx86_64 then
       rec {
         pname = "brave";
         version = "1.70.117";
diff --git a/pkgs/applications/networking/browsers/brave/make-brave.nix b/pkgs/applications/networking/browsers/brave/make-brave.nix
index 0a4345593bba..e94e1a93bf72 100644
--- a/pkgs/applications/networking/browsers/brave/make-brave.nix
+++ b/pkgs/applications/networking/browsers/brave/make-brave.nix
@@ -49,14 +49,14 @@
 , commandLineArgs ? ""
 
 # Necessary for USB audio devices.
-, pulseSupport ? stdenv.isLinux
+, pulseSupport ? stdenv.hostPlatform.isLinux
 , libpulseaudio
 
 # For GPU acceleration support on Wayland (without the lib it doesn't seem to work)
 , libGL
 
 # For video acceleration via VA-API (--enable-features=VaapiVideoDecoder,VaapiVideoEncoder)
-, libvaSupport ? stdenv.isLinux
+, libvaSupport ? stdenv.hostPlatform.isLinux
 , libva
 , enableVideoAcceleration ? libvaSupport
 
diff --git a/pkgs/applications/networking/browsers/chromium/default.nix b/pkgs/applications/networking/browsers/chromium/default.nix
index bebb279f1a66..484cc0e4f194 100644
--- a/pkgs/applications/networking/browsers/chromium/default.nix
+++ b/pkgs/applications/networking/browsers/chromium/default.nix
@@ -16,7 +16,7 @@
 , enableWideVine ? false
 , ungoogled ? false # Whether to build chromium or ungoogled-chromium
 , cupsSupport ? true
-, pulseSupport ? config.pulseaudio or stdenv.isLinux
+, pulseSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux
 , commandLineArgs ? ""
 , pkgsBuildBuild
 , pkgs
diff --git a/pkgs/applications/networking/browsers/elinks/default.nix b/pkgs/applications/networking/browsers/elinks/default.nix
index 8a129f2fdab8..3dd71ab810e7 100644
--- a/pkgs/applications/networking/browsers/elinks/default.nix
+++ b/pkgs/applications/networking/browsers/elinks/default.nix
@@ -4,7 +4,7 @@
 , # Incompatible licenses, LGPLv3 - GPLv2
   enableGuile        ? false,                                         guile ? null
 , enablePython       ? false,                                         python ? null
-, enablePerl         ? (!stdenv.isDarwin) && (stdenv.hostPlatform == stdenv.buildPlatform), perl ? null
+, enablePerl         ? (!stdenv.hostPlatform.isDarwin) && (stdenv.hostPlatform == stdenv.buildPlatform), perl ? null
 # re-add javascript support when upstream supports modern spidermonkey
 }:
 
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
     ncurses libX11 bzip2 zlib brotli zstd xz
     openssl libidn tre expat libev
   ]
-    ++ lib.optional stdenv.isLinux gpm
+    ++ lib.optional stdenv.hostPlatform.isLinux gpm
     ++ lib.optional enableGuile guile
     ++ lib.optional enablePython python
     ++ lib.optional enablePerl perl
diff --git a/pkgs/applications/networking/browsers/firefox/common.nix b/pkgs/applications/networking/browsers/firefox/common.nix
index 3787c618a6aa..77e020ff0cea 100644
--- a/pkgs/applications/networking/browsers/firefox/common.nix
+++ b/pkgs/applications/networking/browsers/firefox/common.nix
@@ -94,20 +94,20 @@ in
 , debugBuild ? false
 
 # On 32bit platforms, we disable adding "-g" for easier linking.
-, enableDebugSymbols ? !stdenv.is32bit
+, enableDebugSymbols ? !stdenv.hostPlatform.is32bit
 
 ## optional libraries
 
-, alsaSupport ? stdenv.isLinux, alsa-lib
+, alsaSupport ? stdenv.hostPlatform.isLinux, alsa-lib
 , ffmpegSupport ? true
 , gssSupport ? true, libkrb5
-, jackSupport ? stdenv.isLinux, libjack2
+, jackSupport ? stdenv.hostPlatform.isLinux, libjack2
 , jemallocSupport ? !stdenv.hostPlatform.isMusl, jemalloc
-, ltoSupport ? (stdenv.isLinux && stdenv.is64bit && !stdenv.hostPlatform.isRiscV), overrideCC, buildPackages
-, pgoSupport ? (stdenv.isLinux && stdenv.hostPlatform == stdenv.buildPlatform), xvfb-run
+, ltoSupport ? (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.is64bit && !stdenv.hostPlatform.isRiscV), overrideCC, buildPackages
+, pgoSupport ? (stdenv.hostPlatform.isLinux && stdenv.hostPlatform == stdenv.buildPlatform), xvfb-run
 , pipewireSupport ? waylandSupport && webrtcSupport
-, pulseaudioSupport ? stdenv.isLinux, libpulseaudio
-, sndioSupport ? stdenv.isLinux, sndio
+, pulseaudioSupport ? stdenv.hostPlatform.isLinux, libpulseaudio
+, sndioSupport ? stdenv.hostPlatform.isLinux, sndio
 , waylandSupport ? true, libxkbcommon, libdrm
 
 ## privacy-related options
@@ -363,7 +363,7 @@ buildStdenv.mkDerivation {
     # please get your own set of keys at https://location.services.mozilla.com/api.
     echo "dfd7836c-d458-4917-98bb-421c82d3c8a0" > $TMPDIR/mls-api-key
     configureFlagsArray+=("--with-mozilla-api-keyfile=$TMPDIR/mls-api-key")
-  '' + lib.optionalString (enableOfficialBranding && !stdenv.is32bit) ''
+  '' + lib.optionalString (enableOfficialBranding && !stdenv.hostPlatform.is32bit) ''
     export MOZILLA_OFFICIAL=1
   '' + lib.optionalString (!requireSigning) ''
     export MOZ_REQUIRE_SIGNING=
@@ -406,7 +406,7 @@ buildStdenv.mkDerivation {
   ]
   # elf-hack is broken when using clang+lld:
   # https://bugzilla.mozilla.org/show_bug.cgi?id=1482204
-  ++ lib.optional (ltoSupport && (buildStdenv.isAarch32 || buildStdenv.isi686 || buildStdenv.isx86_64)) "--disable-elf-hack"
+  ++ lib.optional (ltoSupport && (buildStdenv.hostPlatform.isAarch32 || buildStdenv.hostPlatform.isi686 || buildStdenv.hostPlatform.isx86_64)) "--disable-elf-hack"
   ++ lib.optional (!drmSupport) "--disable-eme"
   ++ lib.optional (allowAddonSideload) "--allow-addon-sideload"
   ++ [
@@ -424,7 +424,7 @@ buildStdenv.mkDerivation {
     (if debugBuild then "--enable-profiling" else "--enable-optimize")
     # --enable-release adds -ffunction-sections & LTO that require a big amount
     # of RAM, and the 32-bit memory space cannot handle that linking
-    (enableFeature (!debugBuild && !stdenv.is32bit) "release")
+    (enableFeature (!debugBuild && !stdenv.hostPlatform.is32bit) "release")
     (enableFeature enableDebugSymbols "debug-symbols")
   ]
   ++ lib.optionals enableDebugSymbols [ "--disable-strip" "--disable-install-strip" ]
@@ -540,7 +540,7 @@ buildStdenv.mkDerivation {
     install -Dvm644 ${distributionIni} $out/lib/${binaryName}/distribution/distribution.ini
     install -Dvm644 ${defaultPrefsFile} $out/lib/${binaryName}/browser/defaults/preferences/nixos-default-prefs.js
 
-  '' + lib.optionalString buildStdenv.isLinux ''
+  '' + lib.optionalString buildStdenv.hostPlatform.isLinux ''
     # Remove SDK cruft. FIXME: move to a separate output?
     rm -rf $out/share/idl $out/include $out/lib/${binaryName}-devel-*
 
diff --git a/pkgs/applications/networking/browsers/firefox/wrapper.nix b/pkgs/applications/networking/browsers/firefox/wrapper.nix
index bbc88581e1e5..6a34a531c7f1 100644
--- a/pkgs/applications/networking/browsers/firefox/wrapper.nix
+++ b/pkgs/applications/networking/browsers/firefox/wrapper.nix
@@ -86,7 +86,7 @@ let
                 else [])
        );
 
-      libs =   lib.optionals stdenv.isLinux [ udev libva mesa libnotify xorg.libXScrnSaver cups pciutils ]
+      libs =   lib.optionals stdenv.hostPlatform.isLinux [ udev libva mesa libnotify xorg.libXScrnSaver cups pciutils ]
             ++ lib.optional pipewireSupport pipewire
             ++ lib.optional ffmpegSupport ffmpeg
             ++ lib.optional gssSupport libkrb5
diff --git a/pkgs/applications/networking/browsers/kristall/default.nix b/pkgs/applications/networking/browsers/kristall/default.nix
index 3515f0e30e01..f228c9730684 100644
--- a/pkgs/applications/networking/browsers/kristall/default.nix
+++ b/pkgs/applications/networking/browsers/kristall/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   qmakeFlags = [ "src/kristall.pro" ];
 
-  installPhase = if stdenv.isDarwin then ''
+  installPhase = if stdenv.hostPlatform.isDarwin then ''
     mkdir -p $out/Applications
     mv kristall.app $out/Applications
   '' else ''
diff --git a/pkgs/applications/networking/browsers/ladybird/default.nix b/pkgs/applications/networking/browsers/ladybird/default.nix
index c77e70f01aa1..60157ca26282 100644
--- a/pkgs/applications/networking/browsers/ladybird/default.nix
+++ b/pkgs/applications/networking/browsers/ladybird/default.nix
@@ -145,9 +145,9 @@ stdenv.mkDerivation (finalAttrs: {
     simdutf
     skia
     woff2
-  ] ++ lib.optional stdenv.isLinux [
+  ] ++ lib.optional stdenv.hostPlatform.isLinux [
     qtwayland
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Cocoa
     Foundation
@@ -158,7 +158,7 @@ stdenv.mkDerivation (finalAttrs: {
     # Disable network operations
     "-DSERENITY_CACHE_DIR=Caches"
     "-DENABLE_NETWORK_DOWNLOADS=OFF"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-DCMAKE_INSTALL_LIBEXECDIR=libexec"
   ];
 
@@ -167,14 +167,14 @@ stdenv.mkDerivation (finalAttrs: {
 
   env.NIX_CFLAGS_COMPILE = "-Wno-error";
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications $out/bin
     mv $out/bundle/Ladybird.app $out/Applications
   '';
 
   # Only Ladybird and WebContent need wrapped, if Qt is enabled.
   # On linux we end up wraping some non-Qt apps, like headless-browser.
-  dontWrapQtApps = stdenv.isDarwin;
+  dontWrapQtApps = stdenv.hostPlatform.isDarwin;
 
   passthru.tests = {
     nixosTest = nixosTests.ladybird;
@@ -188,6 +188,6 @@ stdenv.mkDerivation (finalAttrs: {
     platforms = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
     mainProgram = "Ladybird";
     # use of undeclared identifier 'NSBezelStyleAccessoryBarAction'
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/applications/networking/browsers/lagrange/default.nix b/pkgs/applications/networking/browsers/lagrange/default.nix
index 7a486ec65fe9..d6770a85138e 100644
--- a/pkgs/applications/networking/browsers/lagrange/default.nix
+++ b/pkgs/applications/networking/browsers/lagrange/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [ the-foundation ]
     ++ lib.optionals (!enableTUI) [ fribidi harfbuzz libwebp mpg123 SDL2 ]
     ++ lib.optionals enableTUI [ ncurses sealcurses ]
-    ++ lib.optional stdenv.isDarwin AppKit;
+    ++ lib.optional stdenv.hostPlatform.isDarwin AppKit;
 
   cmakeFlags = lib.optionals enableTUI [
     "-DENABLE_TUI=YES"
@@ -44,7 +44,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-DCMAKE_INSTALL_DATADIR=${placeholder "out"}/share"
   ];
 
-  installPhase = lib.optionalString (stdenv.isDarwin && !enableTUI) ''
+  installPhase = lib.optionalString (stdenv.hostPlatform.isDarwin && !enableTUI) ''
     mkdir -p $out/Applications
     mv Lagrange.app $out/Applications
   '';
diff --git a/pkgs/applications/networking/browsers/links2/default.nix b/pkgs/applications/networking/browsers/links2/default.nix
index 9fe4fe7e37f2..12968f2f56cf 100644
--- a/pkgs/applications/networking/browsers/links2/default.nix
+++ b/pkgs/applications/networking/browsers/links2/default.nix
@@ -2,9 +2,9 @@
 , gpm, openssl, pkg-config, libev # Misc.
 , libpng, libjpeg, libtiff, librsvg, libavif # graphic formats
 , bzip2, zlib, xz # Transfer encodings
-, enableFB ? (!stdenv.isDarwin)
+, enableFB ? (!stdenv.hostPlatform.isDarwin)
 , enableDirectFB ? false, directfb
-, enableX11 ? (!stdenv.isDarwin), libX11, libXt, libXau # GUI support
+, enableX11 ? (!stdenv.hostPlatform.isDarwin), libX11, libXt, libXau # GUI support
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs =
     [ libev librsvg libpng libjpeg libtiff libavif openssl xz bzip2 zlib ]
-    ++ lib.optionals stdenv.isLinux [ gpm ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ gpm ]
     ++ lib.optionals enableX11 [ libX11 libXau libXt ]
     ++ lib.optionals enableDirectFB [ directfb ];
 
diff --git a/pkgs/applications/networking/browsers/netsurf/browser.nix b/pkgs/applications/networking/browsers/netsurf/browser.nix
index cd1b78fc2980..2397145a21c4 100644
--- a/pkgs/applications/networking/browsers/netsurf/browser.nix
+++ b/pkgs/applications/networking/browsers/netsurf/browser.nix
@@ -107,7 +107,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   env.NIX_CFLAGS_COMPILE = "-fcommon";
 
-  env.CFLAGS = lib.optionalString stdenv.isDarwin "-D_DARWIN_C_SOURCE";
+  env.CFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-D_DARWIN_C_SOURCE";
 
   patchPhase = lib.optionalString stdenv.cc.isClang ''
     runHook prePatch
diff --git a/pkgs/applications/networking/browsers/qutebrowser/default.nix b/pkgs/applications/networking/browsers/qutebrowser/default.nix
index 3f676ecd6cc0..64fee95385cc 100644
--- a/pkgs/applications/networking/browsers/qutebrowser/default.nix
+++ b/pkgs/applications/networking/browsers/qutebrowser/default.nix
@@ -3,7 +3,7 @@
 , asciidoc, docbook_xml_dtd_45, docbook_xsl, libxml2
 , libxslt
 , withPdfReader      ? true
-, pipewireSupport    ? stdenv.isLinux
+, pipewireSupport    ? stdenv.hostPlatform.isLinux
 , pipewire
 , qtwayland
 , qtbase
@@ -43,7 +43,7 @@ python3.pkgs.buildPythonApplication {
   buildInputs = [
     qtbase
     glib-networking
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
   ];
 
diff --git a/pkgs/applications/networking/browsers/vivaldi/default.nix b/pkgs/applications/networking/browsers/vivaldi/default.nix
index e9582cbdd985..6e6299fb556b 100644
--- a/pkgs/applications/networking/browsers/vivaldi/default.nix
+++ b/pkgs/applications/networking/browsers/vivaldi/default.nix
@@ -15,7 +15,7 @@
 , proprietaryCodecs ? false, vivaldi-ffmpeg-codecs ? null
 , enableWidevine ? false, widevine-cdm ? null
 , commandLineArgs ? ""
-, pulseSupport ? stdenv.isLinux, libpulseaudio
+, pulseSupport ? stdenv.hostPlatform.isLinux, libpulseaudio
 , kerberosSupport ? true, libkrb5
 }:
 
@@ -62,7 +62,7 @@ in stdenv.mkDerivation rec {
     ++ lib.optional kerberosSupport libkrb5;
 
   libPath = lib.makeLibraryPath buildInputs
-    + lib.optionalString (stdenv.is64bit)
+    + lib.optionalString (stdenv.hostPlatform.is64bit)
       (":" + lib.makeSearchPathOutput "lib" "lib64" buildInputs)
     + ":$out/opt/${vivaldiName}/lib";
 
diff --git a/pkgs/applications/networking/browsers/w3m/default.nix b/pkgs/applications/networking/browsers/w3m/default.nix
index 827202ae3818..8ea48ffbad99 100644
--- a/pkgs/applications/networking/browsers/w3m/default.nix
+++ b/pkgs/applications/networking/browsers/w3m/default.nix
@@ -1,9 +1,9 @@
 { lib, stdenv, fetchFromGitHub, fetchpatch
 , ncurses, boehmgc, gettext, zlib
 , sslSupport ? true, openssl
-, graphicsSupport ? !stdenv.isDarwin, imlib2
+, graphicsSupport ? !stdenv.hostPlatform.isDarwin, imlib2
 , x11Support ? graphicsSupport, libX11
-, mouseSupport ? !stdenv.isDarwin, gpm-ncurses
+, mouseSupport ? !stdenv.hostPlatform.isDarwin, gpm-ncurses
 , perl, man, pkg-config, buildPackages, w3m
 , testers, updateAutotoolsGnuConfigScriptsHook
 }:
@@ -29,7 +29,7 @@ in stdenv.mkDerivation rec {
     hash = "sha256-upb5lWqhC1jRegzTncIz5e21v4Pw912FyVn217HucFs=";
   };
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isSunOS "-lsocket -lnsl";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isSunOS "-lsocket -lnsl";
 
   # we must set these so that the generated files (e.g. w3mhelp.cgi) contain
   # the correct paths.
diff --git a/pkgs/applications/networking/cloudflared/default.nix b/pkgs/applications/networking/cloudflared/default.nix
index f2d841a419bc..5b297129c309 100644
--- a/pkgs/applications/networking/cloudflared/default.nix
+++ b/pkgs/applications/networking/cloudflared/default.nix
@@ -69,7 +69,7 @@ buildGoModule rec {
       --replace "TestManagerCtxDoneCloseSessions" "SkipManagerCtxDoneCloseSessions"
   '';
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   passthru = {
     tests.simple = callPackage ./tests.nix { inherit version; };
diff --git a/pkgs/applications/networking/cluster/click/default.nix b/pkgs/applications/networking/cluster/click/default.nix
index de8e4b38754c..a471c5827c76 100644
--- a/pkgs/applications/networking/cluster/click/default.nix
+++ b/pkgs/applications/networking/cluster/click/default.nix
@@ -13,10 +13,10 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-fcJTxZX9mdF4oFl/Cn1egczRy+yhWt2zLKsdLKz6Q+s=";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   meta = with lib; {
     description = ''The "Command Line Interactive Controller for Kubernetes"'';
diff --git a/pkgs/applications/networking/cluster/cmctl/default.nix b/pkgs/applications/networking/cluster/cmctl/default.nix
index 98fb309942ea..b103450942c7 100644
--- a/pkgs/applications/networking/cluster/cmctl/default.nix
+++ b/pkgs/applications/networking/cluster/cmctl/default.nix
@@ -35,7 +35,7 @@ buildGoModule rec {
   ];
 
   # Trusted by this computer: no: x509: “cert-manager” certificate is not trusted
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postInstall = ''
     mv $out/bin/ctl $out/bin/cmctl
diff --git a/pkgs/applications/networking/cluster/hadoop/default.nix b/pkgs/applications/networking/cluster/hadoop/default.nix
index 91727d4f5801..02acad93a315 100644
--- a/pkgs/applications/networking/cluster/hadoop/default.nix
+++ b/pkgs/applications/networking/cluster/hadoop/default.nix
@@ -31,26 +31,26 @@ let
       version = platformAttrs.${stdenv.system}.version or (throw "Unsupported system: ${stdenv.system}");
       src = fetchurl {
         url = "mirror://apache/hadoop/common/hadoop-${finalAttrs.version}/hadoop-${finalAttrs.version}"
-              + lib.optionalString stdenv.isAarch64 "-aarch64" + ".tar.gz";
+              + lib.optionalString stdenv.hostPlatform.isAarch64 "-aarch64" + ".tar.gz";
         inherit (platformAttrs.${stdenv.system} or (throw "Unsupported system: ${stdenv.system}")) hash;
       };
       doCheck = true;
 
       # Build the container executor binary from source
       # InstallPhase is not lazily evaluating containerExecutor for some reason
-      containerExecutor = if stdenv.isLinux then (callPackage ./containerExecutor.nix {
+      containerExecutor = if stdenv.hostPlatform.isLinux then (callPackage ./containerExecutor.nix {
         inherit (finalAttrs) version;
         inherit platformAttrs;
       }) else "";
 
       nativeBuildInputs = [ makeWrapper ]
-                          ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
-      buildInputs = lib.optionals stdenv.isLinux [ stdenv.cc.cc.lib openssl protobuf zlib snappy libtirpc ];
+                          ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
+      buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ stdenv.cc.cc.lib openssl protobuf zlib snappy libtirpc ];
 
       installPhase = ''
         mkdir $out
         mv * $out/
-      '' + lib.optionalString stdenv.isLinux ''
+      '' + lib.optionalString stdenv.hostPlatform.isLinux ''
         for n in $(find ${finalAttrs.containerExecutor}/bin -type f); do
           ln -sf "$n" $out/bin
         done
diff --git a/pkgs/applications/networking/cluster/jx/default.nix b/pkgs/applications/networking/cluster/jx/default.nix
index 8d8ad429cb2a..9bb95b36dad0 100644
--- a/pkgs/applications/networking/cluster/jx/default.nix
+++ b/pkgs/applications/networking/cluster/jx/default.nix
@@ -33,7 +33,7 @@ buildGoModule rec {
   passthru.updateScript = nix-update-script { };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Command line tool for installing and using Jenkins X";
     mainProgram = "jx";
     homepage = "https://jenkins-x.io";
diff --git a/pkgs/applications/networking/cluster/k3s/builder.nix b/pkgs/applications/networking/cluster/k3s/builder.nix
index 1fb10c82dcc1..8d66882a8a97 100644
--- a/pkgs/applications/networking/cluster/k3s/builder.nix
+++ b/pkgs/applications/networking/cluster/k3s/builder.nix
@@ -150,9 +150,9 @@ let
   # a shortcut that provides the images archive for the host platform. Currently only supports
   # aarch64 (arm64) and x86_64 (amd64), aborts on other architectures.
   airgapImages = fetchurl (
-    if stdenv.isAarch64 then
+    if stdenv.hostPlatform.isAarch64 then
       imagesVersions.${findImagesArchive "arm64"}
-    else if stdenv.isx86_64 then
+    else if stdenv.hostPlatform.isx86_64 then
       imagesVersions.${findImagesArchive "amd64"}
     else
       abort "k3s: airgap images cannot be found automatically for architecture ${stdenv.hostPlatform.linuxArch}, consider using an image archive with an explicit architecture."
diff --git a/pkgs/applications/networking/cluster/k9s/default.nix b/pkgs/applications/networking/cluster/k9s/default.nix
index 8e91f641a7a3..5bd085f2bb59 100644
--- a/pkgs/applications/networking/cluster/k9s/default.nix
+++ b/pkgs/applications/networking/cluster/k9s/default.nix
@@ -26,7 +26,7 @@ buildGoModule rec {
   vendorHash = "sha256-U/tIsYpoog3S8V2yQGGqaQ+Av7TfvCYt3zn74qWuQKs=";
 
   # TODO investigate why some config tests are failing
-  doCheck = !(stdenv.isDarwin && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64);
   # Required to workaround test check error:
   preCheck = "export HOME=$(mktemp -d)";
   # For arch != x86
diff --git a/pkgs/applications/networking/cluster/kpt/default.nix b/pkgs/applications/networking/cluster/kpt/default.nix
index d7aa86fd7d39..ccccec1c8562 100644
--- a/pkgs/applications/networking/cluster/kpt/default.nix
+++ b/pkgs/applications/networking/cluster/kpt/default.nix
@@ -23,6 +23,6 @@ buildGoModule rec {
     homepage = "https://googlecontainertools.github.io/kpt/";
     license = licenses.asl20;
     maintainers = with maintainers; [ mikefaille ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/networking/cluster/kubectl-view-allocations/default.nix b/pkgs/applications/networking/cluster/kubectl-view-allocations/default.nix
index 25e11043252b..8f912c267019 100644
--- a/pkgs/applications/networking/cluster/kubectl-view-allocations/default.nix
+++ b/pkgs/applications/networking/cluster/kubectl-view-allocations/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
     lockFile = ./Cargo.lock;
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "kubectl plugin to list allocations (cpu, memory, gpu,... X utilization, requested, limit, allocatable,...)";
diff --git a/pkgs/applications/networking/cluster/lens/default.nix b/pkgs/applications/networking/cluster/lens/default.nix
index 3e59a1fc23df..98c9ca2d1758 100644
--- a/pkgs/applications/networking/cluster/lens/default.nix
+++ b/pkgs/applications/networking/cluster/lens/default.nix
@@ -35,7 +35,7 @@ let
     platforms = builtins.attrNames sources;
   };
 
-in if stdenv.isDarwin then
+in if stdenv.hostPlatform.isDarwin then
   callPackage ./darwin.nix { inherit pname version src meta; }
 else
   callPackage ./linux.nix { inherit pname version src meta; }
diff --git a/pkgs/applications/networking/cluster/minikube/default.nix b/pkgs/applications/networking/cluster/minikube/default.nix
index ad018b0b5e61..a367c8bc3aab 100644
--- a/pkgs/applications/networking/cluster/minikube/default.nix
+++ b/pkgs/applications/networking/cluster/minikube/default.nix
@@ -29,14 +29,14 @@ buildGoModule rec {
   };
   postPatch =
     (
-      lib.optionalString (withQemu && stdenv.isDarwin) ''
+      lib.optionalString (withQemu && stdenv.hostPlatform.isDarwin) ''
         substituteInPlace \
           pkg/minikube/registry/drvs/qemu2/qemu2.go \
           --replace "/usr/local/opt/qemu/share/qemu" "${qemu}/share/qemu" \
           --replace "/opt/homebrew/opt/qemu/share/qemu" "${qemu}/share/qemu"
       ''
     ) + (
-      lib.optionalString (withQemu && stdenv.isLinux) ''
+      lib.optionalString (withQemu && stdenv.hostPlatform.isLinux) ''
         substituteInPlace \
           pkg/minikube/registry/drvs/qemu2/qemu2.go \
           --replace "/usr/share/OVMF/OVMF_CODE.fd" "${OVMF.firmware}" \
@@ -46,7 +46,7 @@ buildGoModule rec {
 
   nativeBuildInputs = [ installShellFiles pkg-config which makeWrapper ];
 
-  buildInputs = if stdenv.isDarwin then [ vmnet ] else if stdenv.isLinux then [ libvirt ] else null;
+  buildInputs = if stdenv.hostPlatform.isDarwin then [ vmnet ] else if stdenv.hostPlatform.isLinux then [ libvirt ] else null;
 
   buildPhase = ''
     make COMMIT=${src.rev}
diff --git a/pkgs/applications/networking/cluster/node-problem-detector/default.nix b/pkgs/applications/networking/cluster/node-problem-detector/default.nix
index 4daed56dd9d3..e30d89a9a34c 100644
--- a/pkgs/applications/networking/cluster/node-problem-detector/default.nix
+++ b/pkgs/applications/networking/cluster/node-problem-detector/default.nix
@@ -20,15 +20,15 @@ buildGoModule rec {
   # Linux-only feature. See 'ENABLE_JOURNALD' upstream:
   # https://github.com/kubernetes/node-problem-detector/blob/master/Makefile
   subPackages = [ "cmd/nodeproblemdetector" ] ++
-    lib.optionals stdenv.isLinux [ "cmd/logcounter" ];
+    lib.optionals stdenv.hostPlatform.isLinux [ "cmd/logcounter" ];
 
   preBuild = ''
-    export CGO_ENABLED=${if stdenv.isLinux then "1" else "0"}
+    export CGO_ENABLED=${if stdenv.hostPlatform.isLinux then "1" else "0"}
   '';
 
-  buildInputs = lib.optionals stdenv.isLinux [ systemd ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ systemd ];
 
-  tags = lib.optionals stdenv.isLinux [ "journald" ];
+  tags = lib.optionals stdenv.hostPlatform.isLinux [ "journald" ];
 
   ldflags = [
     "-X k8s.io/${pname}/pkg/version.version=v${version}"
diff --git a/pkgs/applications/networking/cluster/ocm/default.nix b/pkgs/applications/networking/cluster/ocm/default.nix
index f83347d0538e..1b2b5568cdd1 100644
--- a/pkgs/applications/networking/cluster/ocm/default.nix
+++ b/pkgs/applications/networking/cluster/ocm/default.nix
@@ -24,7 +24,7 @@ buildGoModule rec {
   '';
 
   # Tests fail in Darwin sandbox.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postInstall = ''
     installShellCompletion --cmd ocm \
diff --git a/pkgs/applications/networking/cluster/rke2/builder.nix b/pkgs/applications/networking/cluster/rke2/builder.nix
index 58a9d6c629ea..21941ad8ee0a 100644
--- a/pkgs/applications/networking/cluster/rke2/builder.nix
+++ b/pkgs/applications/networking/cluster/rke2/builder.nix
@@ -91,7 +91,7 @@ buildGoModule rec {
       package = rke2;
       version = "v${version}";
     };
-  } // lib.optionalAttrs stdenv.isLinux {
+  } // lib.optionalAttrs stdenv.hostPlatform.isLinux {
     inherit (nixosTests) rke2;
   };
 
diff --git a/pkgs/applications/networking/cluster/temporal-cli/default.nix b/pkgs/applications/networking/cluster/temporal-cli/default.nix
index 3e36eda8e6b2..101d3baa6c5d 100644
--- a/pkgs/applications/networking/cluster/temporal-cli/default.nix
+++ b/pkgs/applications/networking/cluster/temporal-cli/default.nix
@@ -41,7 +41,7 @@ let
     ];
 
     # Tests fail with x86 on macOS Rosetta 2
-    doCheck = !(stdenv.isDarwin && stdenv.hostPlatform.isx86_64);
+    doCheck = !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64);
 
     preCheck = ''
       export HOME="$(mktemp -d)"
diff --git a/pkgs/applications/networking/compactor/default.nix b/pkgs/applications/networking/compactor/default.nix
index 12e6f432c5bd..88f0b34fd27c 100644
--- a/pkgs/applications/networking/compactor/default.nix
+++ b/pkgs/applications/networking/compactor/default.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
   ];
   enableParallelBuilding = true;
 
-  doCheck = !stdenv.isDarwin; # check-dnstap.sh failing on Darwin
+  doCheck = !stdenv.hostPlatform.isDarwin; # check-dnstap.sh failing on Darwin
   nativeCheckInputs = [
     cbor-diag
     cddl
diff --git a/pkgs/applications/networking/diswall/default.nix b/pkgs/applications/networking/diswall/default.nix
index 76be6f3f75ce..356f8f622c35 100644
--- a/pkgs/applications/networking/diswall/default.nix
+++ b/pkgs/applications/networking/diswall/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
     sha256 = "sha256-iZln/cgYGSFYwXDvD1CkQdfwBDXj897X1il1m5HfFJs=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/applications/networking/dyndns/dyndnsc/default.nix b/pkgs/applications/networking/dyndns/dyndnsc/default.nix
index d9da9e48c7fb..a4c84ee7e76a 100644
--- a/pkgs/applications/networking/dyndns/dyndnsc/default.nix
+++ b/pkgs/applications/networking/dyndns/dyndnsc/default.nix
@@ -48,7 +48,7 @@ python3Packages.buildPythonApplication rec {
       # AssertionError
       "test_null_dummy"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # The tests that spawn a server using Bottle cannot be run on
       # macOS or Windows as the default multiprocessing start method
       # on those platforms is 'spawn', which requires the code to be
diff --git a/pkgs/applications/networking/feedreaders/newsboat/default.nix b/pkgs/applications/networking/feedreaders/newsboat/default.nix
index 43f3c565d244..144634d60d03 100644
--- a/pkgs/applications/networking/feedreaders/newsboat/default.nix
+++ b/pkgs/applications/networking/feedreaders/newsboat/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-0z3G8j0Qk0HEDUKA7fmjFfNW956rRtzKO+0ltNQR4es=";
 
   # TODO: Check if that's still needed
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Allow other ncurses versions on Darwin
     substituteInPlace config.sh \
       --replace "ncurses5.4" "ncurses"
@@ -25,10 +25,10 @@ rustPlatform.buildRustPackage rec {
     pkg-config
     asciidoctor
     gettext
-  ] ++ lib.optionals stdenv.isDarwin [ makeWrapper ncurses ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ makeWrapper ncurses ];
 
   buildInputs = [ stfl sqlite curl libxml2 json_c ncurses ]
-    ++ lib.optionals stdenv.isDarwin [ Security Foundation libiconv gettext ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security Foundation libiconv gettext ];
 
   postBuild = ''
     make -j $NIX_BUILD_CORES prefix="$out"
@@ -49,7 +49,7 @@ rustPlatform.buildRustPackage rec {
 
   postInstall = ''
     make -j $NIX_BUILD_CORES prefix="$out" install
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     for prog in $out/bin/*; do
       wrapProgram "$prog" --prefix DYLD_LIBRARY_PATH : "${stfl}/lib"
     done
diff --git a/pkgs/applications/networking/feedreaders/rsstail/default.nix b/pkgs/applications/networking/feedreaders/rsstail/default.nix
index 524e8d76b697..cecad11a4f63 100644
--- a/pkgs/applications/networking/feedreaders/rsstail/default.nix
+++ b/pkgs/applications/networking/feedreaders/rsstail/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation {
     sha256 = "12p69i3g1fwlw0bds9jqsdmzkid3k5a41w31d227i7vm12wcvjf6";
   };
 
-  buildInputs = [ libmrss ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = [ libmrss ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   postPatch = ''
     substituteInPlace Makefile --replace -liconv_hook ""
diff --git a/pkgs/applications/networking/feedreaders/russ/default.nix b/pkgs/applications/networking/feedreaders/russ/default.nix
index 832f888dcfaa..3fbaa2108d60 100644
--- a/pkgs/applications/networking/feedreaders/russ/default.nix
+++ b/pkgs/applications/networking/feedreaders/russ/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage {
   # tests are network based :(
   doCheck = false;
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     CoreServices
     AppKit
   ]);
diff --git a/pkgs/applications/networking/feedreaders/tuifeed/default.nix b/pkgs/applications/networking/feedreaders/tuifeed/default.nix
index 0465fc31cf64..16bb0324d07a 100644
--- a/pkgs/applications/networking/feedreaders/tuifeed/default.nix
+++ b/pkgs/applications/networking/feedreaders/tuifeed/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-QKSNbpVRtSKp2q1jVPYTS8XCMtQAyg3AWvD/6+OjI7Y=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   doCheck = false;
 
diff --git a/pkgs/applications/networking/ftp/filezilla/default.nix b/pkgs/applications/networking/ftp/filezilla/default.nix
index 10cf454dc659..e8a1f90fbfa8 100644
--- a/pkgs/applications/networking/ftp/filezilla/default.nix
+++ b/pkgs/applications/networking/ftp/filezilla/default.nix
@@ -50,9 +50,9 @@ stdenv.mkDerivation rec {
     wxGTK32
     gtk3
     xdg-utils
-  ] ++ lib.optionals stdenv.isDarwin [ CoreServices Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices Security ];
 
-  preBuild = lib.optionalString (stdenv.isDarwin) ''
+  preBuild = lib.optionalString (stdenv.hostPlatform.isDarwin) ''
     export MACOSX_DEPLOYMENT_TARGET=11.0
   '';
 
diff --git a/pkgs/applications/networking/gdrive3/default.nix b/pkgs/applications/networking/gdrive3/default.nix
index 4e7fea129654..3fc7af9b1417 100644
--- a/pkgs/applications/networking/gdrive3/default.nix
+++ b/pkgs/applications/networking/gdrive3/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/applications/networking/gopher/phetch/default.nix b/pkgs/applications/networking/gopher/phetch/default.nix
index 9f835c8535e2..a74f94eceb60 100644
--- a/pkgs/applications/networking/gopher/phetch/default.nix
+++ b/pkgs/applications/networking/gopher/phetch/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-y3Y5PnZ51Zc3LmVTijUGnb0KaGm28sWOSYxjuM3A1Zk=";
 
   nativeBuildInputs = [ installShellFiles pkg-config scdoc which ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   postInstall = ''
     make manual
diff --git a/pkgs/applications/networking/gopher/sacc/default.nix b/pkgs/applications/networking/gopher/sacc/default.nix
index dc4ed20d7204..92907d8a110d 100644
--- a/pkgs/applications/networking/gopher/sacc/default.nix
+++ b/pkgs/applications/networking/gopher/sacc/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ ncurses libressl ];
 
-  CFLAGS = lib.optionals stdenv.isDarwin [
+  CFLAGS = lib.optionals stdenv.hostPlatform.isDarwin [
     "-D_DARWIN_C_SOURCE"
   ];
 
diff --git a/pkgs/applications/networking/ids/suricata/default.nix b/pkgs/applications/networking/ids/suricata/default.nix
index 14dbdacd7210..f654a96cb75d 100644
--- a/pkgs/applications/networking/ids/suricata/default.nix
+++ b/pkgs/applications/networking/ids/suricata/default.nix
@@ -80,7 +80,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  patches = lib.optional stdenv.is64bit ./bpf_stubs_workaround.patch;
+  patches = lib.optional stdenv.hostPlatform.is64bit ./bpf_stubs_workaround.patch;
 
   postPatch = ''
     substituteInPlace ./configure \
diff --git a/pkgs/applications/networking/ids/zeek/broker/default.nix b/pkgs/applications/networking/ids/zeek/broker/default.nix
index 49a13cdb2623..0fcdd5048c0e 100644
--- a/pkgs/applications/networking/ids/zeek/broker/default.nix
+++ b/pkgs/applications/networking/ids/zeek/broker/default.nix
@@ -62,7 +62,7 @@ stdenv.mkDerivation rec {
     ./0001-Fix-include-path-in-exported-CMake-targets.patch
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace bindings/python/CMakeLists.txt --replace " -u -r" ""
   '';
 
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
     "-DPY_MOD_INSTALL_DIR=${placeholder "py"}/${python3.sitePackages}/"
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-faligned-allocation";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-faligned-allocation";
 
   meta = with lib; {
     description = "Zeek's Messaging Library";
diff --git a/pkgs/applications/networking/ids/zeek/default.nix b/pkgs/applications/networking/ids/zeek/default.nix
index e1ac462330c2..8286c46bcb48 100644
--- a/pkgs/applications/networking/ids/zeek/default.nix
+++ b/pkgs/applications/networking/ids/zeek/default.nix
@@ -58,9 +58,9 @@ stdenv.mkDerivation rec {
     openssl
     zlib
     python
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libkqueue
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     gettext
   ];
 
@@ -78,11 +78,11 @@ stdenv.mkDerivation rec {
     "-DZEEK_STATE_DIR=/var/lib/zeek"
     "-DZEEK_SPOOL_DIR=/var/spool/zeek"
     "-DDISABLE_JAVASCRIPT=ON"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-DLIBKQUEUE_ROOT_DIR=${libkqueue}"
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-faligned-allocation";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-faligned-allocation";
 
   postInstall = ''
     for file in $out/share/zeek/base/frameworks/notice/actions/pp-alarms.zeek $out/share/zeek/base/frameworks/notice/main.zeek; do
diff --git a/pkgs/applications/networking/instant-messengers/caprine-bin/default.nix b/pkgs/applications/networking/instant-messengers/caprine-bin/default.nix
index cadfe432b297..f82ae2ac4220 100644
--- a/pkgs/applications/networking/instant-messengers/caprine-bin/default.nix
+++ b/pkgs/applications/networking/instant-messengers/caprine-bin/default.nix
@@ -18,7 +18,7 @@ let
     sha256 = "sha256-WMT4yrLjDSMsI/lFbYODu3/0whcF+++4ShoChfMyLfQ=";
   };
 in
-(if stdenvNoCC.isDarwin then x86_64-dmg else x86_64-appimage).overrideAttrs (oldAttrs: {
+(if stdenvNoCC.hostPlatform.isDarwin then x86_64-dmg else x86_64-appimage).overrideAttrs (oldAttrs: {
   passthru = (oldAttrs.passthru or { }) // { inherit x86_64-appimage x86_64-dmg; };
   meta = oldAttrs.meta // {
     platforms = x86_64-appimage.meta.platforms ++ x86_64-dmg.meta.platforms;
diff --git a/pkgs/applications/networking/instant-messengers/chatterino2/default.nix b/pkgs/applications/networking/instant-messengers/chatterino2/default.nix
index ca8a163fd566..be7862611f19 100644
--- a/pkgs/applications/networking/instant-messengers/chatterino2/default.nix
+++ b/pkgs/applications/networking/instant-messengers/chatterino2/default.nix
@@ -20,11 +20,11 @@ stdenv.mkDerivation rec {
     boost
     openssl
     libsecret
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qt6.qtwayland
   ];
   cmakeFlags = [ "-DBUILD_WITH_QT6=ON" ];
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p "$out/Applications"
     mv bin/chatterino.app "$out/Applications/"
   '' + ''
diff --git a/pkgs/applications/networking/instant-messengers/dino/default.nix b/pkgs/applications/networking/instant-messengers/dino/default.nix
index b818baa89930..dd5f8f54c745 100644
--- a/pkgs/applications/networking/instant-messengers/dino/default.nix
+++ b/pkgs/applications/networking/instant-messengers/dino/default.nix
@@ -94,7 +94,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   # Undefined symbols for architecture arm64: "_gpg_strerror"
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-lgpg-error";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-lgpg-error";
 
   doCheck = true;
   checkPhase = ''
@@ -112,7 +112,7 @@ stdenv.mkDerivation (finalAttrs: {
   # will load
   #
   # See https://github.com/dino/dino/wiki/macOS
-  postFixup = lib.optionalString (stdenv.isDarwin) ''
+  postFixup = lib.optionalString (stdenv.hostPlatform.isDarwin) ''
     cd "$out/lib/dino/plugins/"
     for f in *.dylib; do
       mv "$f" "$(basename "$f" .dylib).so"
diff --git a/pkgs/applications/networking/instant-messengers/discord/default.nix b/pkgs/applications/networking/instant-messengers/discord/default.nix
index d095b53185f9..939716d9b52d 100644
--- a/pkgs/applications/networking/instant-messengers/discord/default.nix
+++ b/pkgs/applications/networking/instant-messengers/discord/default.nix
@@ -1,7 +1,7 @@
 { branch ? "stable", callPackage, fetchurl, lib, stdenv }:
 let
   versions =
-    if stdenv.isLinux then {
+    if stdenv.hostPlatform.isLinux then {
       stable = "0.0.67";
       ptb = "0.0.105";
       canary = "0.0.492";
@@ -65,7 +65,7 @@ let
     mainProgram = "discord";
   };
   package =
-    if stdenv.isLinux
+    if stdenv.hostPlatform.isLinux
     then ./linux.nix
     else ./darwin.nix;
 
@@ -85,17 +85,17 @@ let
         };
         ptb = rec {
           pname = "discord-ptb";
-          binaryName = if stdenv.isLinux then "DiscordPTB" else desktopName;
+          binaryName = if stdenv.hostPlatform.isLinux then "DiscordPTB" else desktopName;
           desktopName = "Discord PTB";
         };
         canary = rec {
           pname = "discord-canary";
-          binaryName = if stdenv.isLinux then "DiscordCanary" else desktopName;
+          binaryName = if stdenv.hostPlatform.isLinux then "DiscordCanary" else desktopName;
           desktopName = "Discord Canary";
         };
         development = rec {
           pname = "discord-development";
-          binaryName = if stdenv.isLinux then "DiscordDevelopment" else desktopName;
+          binaryName = if stdenv.hostPlatform.isLinux then "DiscordDevelopment" else desktopName;
           desktopName = "Discord Development";
         };
       }
diff --git a/pkgs/applications/networking/instant-messengers/element/element-desktop.nix b/pkgs/applications/networking/instant-messengers/element/element-desktop.nix
index 37393681224b..fc40e11dca16 100644
--- a/pkgs/applications/networking/instant-messengers/element/element-desktop.nix
+++ b/pkgs/applications/networking/instant-messengers/element/element-desktop.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation (finalAttrs: builtins.removeAttrs pinData [ "hashes" ] // {
   };
 
   nativeBuildInputs = [ yarn fixup-yarn-lock nodejs makeWrapper jq ]
-    ++ lib.optionals stdenv.isDarwin [ desktopToDarwinBundle ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ desktopToDarwinBundle ];
 
   inherit seshat;
 
@@ -125,7 +125,7 @@ stdenv.mkDerivation (finalAttrs: builtins.removeAttrs pinData [ "hashes" ] // {
     mimeTypes = [ "x-scheme-handler/element" ];
   };
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     cp build/icon.icns $out/Applications/Element.app/Contents/Resources/element.icns
   '';
 
diff --git a/pkgs/applications/networking/instant-messengers/element/keytar/default.nix b/pkgs/applications/networking/instant-messengers/element/keytar/default.nix
index 7d17d582762a..958a80fb4743 100644
--- a/pkgs/applications/networking/instant-messengers/element/keytar/default.nix
+++ b/pkgs/applications/networking/instant-messengers/element/keytar/default.nix
@@ -19,10 +19,10 @@ in stdenv.mkDerivation rec {
     nodejs python3 pkg-config
     npmHooks.npmConfigHook
   ]
-    ++ lib.optional  stdenv.isDarwin xcbuild;
+    ++ lib.optional  stdenv.hostPlatform.isDarwin xcbuild;
 
-  buildInputs = lib.optionals (!stdenv.isDarwin) [ libsecret ]
-    ++ lib.optionals stdenv.isDarwin [ Security AppKit ];
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ libsecret ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security AppKit ];
 
   npmDeps = fetchNpmDeps {
     inherit src;
diff --git a/pkgs/applications/networking/instant-messengers/element/seshat/default.nix b/pkgs/applications/networking/instant-messengers/element/seshat/default.nix
index bc163fb50a89..e8e88491c2cc 100644
--- a/pkgs/applications/networking/instant-messengers/element/seshat/default.nix
+++ b/pkgs/applications/networking/instant-messengers/element/seshat/default.nix
@@ -17,7 +17,7 @@ in rustPlatform.buildRustPackage rec {
   sourceRoot = "${src.name}/seshat-node/native";
 
   nativeBuildInputs = [ nodejs python3 yarn fixup-yarn-lock ];
-  buildInputs = [ sqlcipher ] ++ lib.optional stdenv.isDarwin CoreServices;
+  buildInputs = [ sqlcipher ] ++ lib.optional stdenv.hostPlatform.isDarwin CoreServices;
 
   npm_config_nodedir = nodejs;
 
diff --git a/pkgs/applications/networking/instant-messengers/freetalk/default.nix b/pkgs/applications/networking/instant-messengers/freetalk/default.nix
index e259c6b60f8d..b71395ad93bb 100644
--- a/pkgs/applications/networking/instant-messengers/freetalk/default.nix
+++ b/pkgs/applications/networking/instant-messengers/freetalk/default.nix
@@ -15,11 +15,11 @@ stdenv.mkDerivation rec {
   buildInputs = [
     guile glib loudmouth gmp libidn readline libtool
     libunwind ncurses curl jansson
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     argp-standalone
   ];
 
-  env.NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-largp";
+  env.NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-largp";
 
   meta = with lib; {
     description =  "Console XMPP client";
diff --git a/pkgs/applications/networking/instant-messengers/go-neb/default.nix b/pkgs/applications/networking/instant-messengers/go-neb/default.nix
index 82cfb3126c86..6b4528dfe289 100644
--- a/pkgs/applications/networking/instant-messengers/go-neb/default.nix
+++ b/pkgs/applications/networking/instant-messengers/go-neb/default.nix
@@ -21,7 +21,7 @@ buildGoModule {
   passthru.tests.go-neb = nixosTests.go-neb;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Extensible matrix bot written in Go";
     mainProgram = "go-neb";
     homepage = "https://github.com/matrix-org/go-neb";
diff --git a/pkgs/applications/networking/instant-messengers/gomuks/default.nix b/pkgs/applications/networking/instant-messengers/gomuks/default.nix
index 64b971b2353b..510f577a50e9 100644
--- a/pkgs/applications/networking/instant-messengers/gomuks/default.nix
+++ b/pkgs/applications/networking/instant-messengers/gomuks/default.nix
@@ -42,7 +42,7 @@ buildGoModule rec {
     }/* $out/
     substituteAllInPlace $out/share/applications/*
     wrapProgram $out/bin/gomuks \
-      --prefix PATH : "${lib.makeBinPath (lib.optionals stdenv.isLinux [ libnotify pulseaudio ])}" \
+      --prefix PATH : "${lib.makeBinPath (lib.optionals stdenv.hostPlatform.isLinux [ libnotify pulseaudio ])}" \
       --set-default GOMUKS_SOUND_NORMAL "${sound-theme-freedesktop}/share/sounds/freedesktop/stereo/message-new-instant.oga" \
       --set-default GOMUKS_SOUND_CRITICAL "${sound-theme-freedesktop}/share/sounds/freedesktop/stereo/complete.oga"
   '';
diff --git a/pkgs/applications/networking/instant-messengers/gurk-rs/default.nix b/pkgs/applications/networking/instant-messengers/gurk-rs/default.nix
index 7d934aabbc65..ae7001fe7bf9 100644
--- a/pkgs/applications/networking/instant-messengers/gurk-rs/default.nix
+++ b/pkgs/applications/networking/instant-messengers/gurk-rs/default.nix
@@ -38,9 +38,9 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ protobuf pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
-  NIX_LDFLAGS = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [ "-framework" "AppKit" ];
+  NIX_LDFLAGS = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [ "-framework" "AppKit" ];
 
   PROTOC = "${pkgsBuildHost.protobuf}/bin/protoc";
 
diff --git a/pkgs/applications/networking/instant-messengers/iamb/default.nix b/pkgs/applications/networking/instant-messengers/iamb/default.nix
index 655a20c12ac6..02a632a9f4b1 100644
--- a/pkgs/applications/networking/instant-messengers/iamb/default.nix
+++ b/pkgs/applications/networking/instant-messengers/iamb/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-a5y8nNFixOxJPNDOzvFFRqVrY2jsirCud2ZJJ8OvRhQ=";
 
   nativeBuildInputs = [ installShellFiles ];
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.Cocoa
   ];
diff --git a/pkgs/applications/networking/instant-messengers/jami/default.nix b/pkgs/applications/networking/instant-messengers/jami/default.nix
index 313d45a98239..a3df5958beb6 100644
--- a/pkgs/applications/networking/instant-messengers/jami/default.nix
+++ b/pkgs/applications/networking/instant-messengers/jami/default.nix
@@ -110,7 +110,7 @@ stdenv.mkDerivation rec {
       "--disable-resample"
       "--disable-libwebrtc"
       "--with-gnutls=yes"
-    ] ++ lib.optionals stdenv.isLinux [ "--enable-epoll" ];
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [ "--enable-epoll" ];
 
     buildInputs = old.buildInputs ++ [ gnutls ];
   });
diff --git a/pkgs/applications/networking/instant-messengers/jitsi-meet-electron/default.nix b/pkgs/applications/networking/instant-messengers/jitsi-meet-electron/default.nix
index 88b9baeacf26..619759df2f00 100644
--- a/pkgs/applications/networking/instant-messengers/jitsi-meet-electron/default.nix
+++ b/pkgs/applications/networking/instant-messengers/jitsi-meet-electron/default.nix
@@ -30,18 +30,18 @@ buildNpmPackage rec {
 
   nativeBuildInputs = [
     makeWrapper
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     copyDesktopItems
   ];
 
   # robotjs node-gyp dependencies
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     libpng
     libX11
     libXi
     libXtst
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Carbon
     CoreFoundation
     ApplicationServices
@@ -84,7 +84,7 @@ buildNpmPackage rec {
   installPhase = ''
     runHook preInstall
 
-    ${lib.optionalString stdenv.isLinux ''
+    ${lib.optionalString stdenv.hostPlatform.isLinux ''
       mkdir -p $out/share/jitsi-meet-electron
       cp -r dist/*-unpacked/{locales,resources{,.pak}} $out/share/jitsi-meet-electron
 
@@ -97,7 +97,7 @@ buildNpmPackage rec {
       install -Dm644 resources/icons/512x512.png $out/share/icons/hicolor/512x512/apps/jitsi-meet-electron.png
     ''}
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/Applications
       cp -r dist/mac*/"Jitsi Meet.app" $out/Applications
       makeWrapper "$out/Applications/Jitsi Meet.app/Contents/MacOS/Jitsi Meet" $out/bin/jitsi-meet-electron
diff --git a/pkgs/applications/networking/instant-messengers/mikutter/default.nix b/pkgs/applications/networking/instant-messengers/mikutter/default.nix
index 3938d03447f8..eeb5f582f25c 100644
--- a/pkgs/applications/networking/instant-messengers/mikutter/default.nix
+++ b/pkgs/applications/networking/instant-messengers/mikutter/default.nix
@@ -79,18 +79,18 @@ with mikutterPaths; stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ copyDesktopItems wrapGAppsHook3 gobject-introspection ]
-    ++ lib.optionals stdenv.isDarwin [ libicns ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libicns ];
   buildInputs = [
     atk
     gtk2
     libnotify
     which # some plugins use it at runtime
     wrappedRuby
-  ] ++ lib.optionals stdenv.isLinux [ alsa-utils ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-utils ];
 
   scriptPath = lib.makeBinPath (
     [ wrappedRuby libnotify which ]
-    ++ lib.optionals stdenv.isLinux [ alsa-utils ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-utils ]
   );
 
   postUnpack = ''
@@ -123,7 +123,7 @@ with mikutterPaths; stdenv.mkDerivation rec {
     let
       infoPlist = mkInfoPlist { inherit version; };
     in
-    lib.optionalString stdenv.isDarwin ''
+    lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p ${appBinDir} ${appResourceDir}
       install -Dm644 ${infoPlist} ${appPrefixDir}/Info.plist
       ln -s $out/bin/mikutter ${appBinDir}/mikutter
diff --git a/pkgs/applications/networking/instant-messengers/nchat/default.nix b/pkgs/applications/networking/instant-messengers/nchat/default.nix
index 0e3c7f6803fb..b9183b2d7645 100644
--- a/pkgs/applications/networking/instant-messengers/nchat/default.nix
+++ b/pkgs/applications/networking/instant-messengers/nchat/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     readline
     sqlite
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [ AppKit Cocoa Foundation ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit Cocoa Foundation ];
 
   cmakeFlags = [
     "-DHAS_WHATSAPP=OFF" # go module build required
diff --git a/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix b/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix
index 3255b99cf706..8a6391892ae4 100644
--- a/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix
+++ b/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix
@@ -71,7 +71,7 @@ python3Packages.buildPythonApplication rec {
   ];
 
   # darwin has difficulty communicating with server, fails some integration tests
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postInstall = ''
     installManPage docs/man/*.[1-9]
diff --git a/pkgs/applications/networking/instant-messengers/pidgin/default.nix b/pkgs/applications/networking/instant-messengers/pidgin/default.nix
index 9300a73b175d..c2c8f98251b6 100644
--- a/pkgs/applications/networking/instant-messengers/pidgin/default.nix
+++ b/pkgs/applications/networking/instant-messengers/pidgin/default.nix
@@ -79,14 +79,14 @@ let
     ]
     ++ lib.optional withOpenssl openssl
     ++ lib.optionals withGnutls [ gnutls libgcrypt ]
-    ++ lib.optionals stdenv.isLinux [ gtk2 gtkspell2 farstream ]
-    ++ lib.optional stdenv.isDarwin gtk2-x11;
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ gtk2 gtkspell2 farstream ]
+    ++ lib.optional stdenv.hostPlatform.isDarwin gtk2-x11;
 
 
     propagatedBuildInputs = [ pkg-config gettext ]
       ++ (with perlPackages; [ perl XMLParser ])
-      ++ lib.optional stdenv.isLinux gtk2
-      ++ lib.optional stdenv.isDarwin gtk2-x11;
+      ++ lib.optional stdenv.hostPlatform.isLinux gtk2
+      ++ lib.optional stdenv.hostPlatform.isDarwin gtk2-x11;
 
     patches = [
       ./add-search-path.patch
@@ -107,7 +107,7 @@ let
     ]
     ++ lib.optionals withCyrus_sasl [ "--enable-cyrus-sasl=yes" ]
     ++ lib.optionals withGnutls [ "--enable-gnutls=yes" "--enable-nss=no" ]
-    ++ lib.optionals stdenv.isDarwin [ "--disable-gtkspell" "--disable-vv" ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "--disable-gtkspell" "--disable-vv" ]
     ++ lib.optionals stdenv.cc.isClang [ "CFLAGS=-Wno-error=int-conversion" ];
 
     enableParallelBuilding = true;
@@ -121,7 +121,7 @@ let
     # In particular, this detects missing python imports in some of the tools.
     postFixup = let
       # TODO: python is a script, so it doesn't work as interpreter on darwin
-      binsToTest = lib.optionalString stdenv.isLinux "purple-remote," + "pidgin,finch";
+      binsToTest = lib.optionalString stdenv.hostPlatform.isLinux "purple-remote," + "pidgin,finch";
     in lib.optionalString doInstallCheck ''
       for f in "''${!outputBin}"/bin/{${binsToTest}}; do
         echo "Testing: $f --help"
diff --git a/pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/tdlib-purple/default.nix b/pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/tdlib-purple/default.nix
index 1a1fd3b409a6..26c67b070e5e 100644
--- a/pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/tdlib-purple/default.nix
+++ b/pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/tdlib-purple/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [ "-DNoVoip=True" ]; # libtgvoip required
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ "-U__ARM_NEON__" ]);
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ "-U__ARM_NEON__" ]);
 
   meta = with lib; {
     homepage = "https://github.com/ars3niy/tdlib-purple";
diff --git a/pkgs/applications/networking/instant-messengers/qtox/default.nix b/pkgs/applications/networking/instant-messengers/qtox/default.nix
index 09240ae4713b..84b24dab2de7 100644
--- a/pkgs/applications/networking/instant-messengers/qtox/default.nix
+++ b/pkgs/applications/networking/instant-messengers/qtox/default.nix
@@ -53,10 +53,10 @@ mkDerivation rec {
     pcre
     qrencode
     sqlcipher
-  ] ++ lib.optionals stdenv.isDarwin [ AVFoundation ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ AVFoundation ];
 
   nativeBuildInputs = [ cmake pkg-config qttools ]
-    ++ lib.optionals stdenv.isDarwin [ perl ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ perl ];
 
   cmakeFlags = [
     "-DGIT_DESCRIBE=v${version}"
@@ -67,7 +67,7 @@ mkDerivation rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Qt Tox client";
     mainProgram = "qtox";
     homepage = "https://tox.chat";
diff --git a/pkgs/applications/networking/instant-messengers/quaternion/default.nix b/pkgs/applications/networking/instant-messengers/quaternion/default.nix
index 2a0bfce75631..ef6bc08616c5 100644
--- a/pkgs/applications/networking/instant-messengers/quaternion/default.nix
+++ b/pkgs/applications/networking/instant-messengers/quaternion/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   postInstall =
-    if stdenv.isDarwin then ''
+    if stdenv.hostPlatform.isDarwin then ''
       mkdir -p $out/Applications
       mv $out/bin/quaternion.app $out/Applications
       rmdir $out/bin || :
diff --git a/pkgs/applications/networking/instant-messengers/signal-cli/default.nix b/pkgs/applications/networking/instant-messengers/signal-cli/default.nix
index 17aef03835bd..d20ef1f1817e 100644
--- a/pkgs/applications/networking/instant-messengers/signal-cli/default.nix
+++ b/pkgs/applications/networking/instant-messengers/signal-cli/default.nix
@@ -10,14 +10,14 @@ stdenv.mkDerivation rec {
     hash = "sha256-OTKXLcLktWiSdRhGe7ioL2ViJQQcCjR1+2LlGoMnSgE=";
   };
 
-  buildInputs = lib.optionals stdenv.isLinux [ libmatthew_java dbus dbus_java ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libmatthew_java dbus dbus_java ];
   nativeBuildInputs = [ makeWrapper ];
 
   installPhase = ''
     mkdir -p $out/bin
     cp -r lib $out/lib
     cp bin/signal-cli $out/bin/signal-cli
-  '' + (if stdenv.isLinux then ''
+  '' + (if stdenv.hostPlatform.isLinux then ''
     makeWrapper ${openjdk21_headless}/bin/java $out/bin/signal-cli \
       --set JAVA_HOME "${openjdk21_headless}" \
       --add-flags "-classpath '$out/lib/*:${libmatthew_java}/lib/jni'" \
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
   #         /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa: file system sandbox blocked stat()
   #         /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa: file system sandbox blocked stat()
   # /nix/store/in41dz8byyyz4c0w132l7mqi43liv4yr-stdenv-darwin/setup: line 1310:  2231 Abort trap: 6           signal-cli --version
-  doInstallCheck = stdenv.isLinux;
+  doInstallCheck = stdenv.hostPlatform.isLinux;
 
   installCheckPhase = ''
     export PATH=$PATH:$out/bin
diff --git a/pkgs/applications/networking/instant-messengers/signalbackup-tools/default.nix b/pkgs/applications/networking/instant-messengers/signalbackup-tools/default.nix
index 7e381c1205f5..a6a6fe89aadd 100644
--- a/pkgs/applications/networking/instant-messengers/signalbackup-tools/default.nix
+++ b/pkgs/applications/networking/instant-messengers/signalbackup-tools/default.nix
@@ -25,16 +25,16 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     cmake
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     pkg-config
   ];
 
   buildInputs = [
     openssl
     sqlite
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     dbus
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Security
   ];
 
diff --git a/pkgs/applications/networking/instant-messengers/slack/default.nix b/pkgs/applications/networking/instant-messengers/slack/default.nix
index 125691639586..9359480b0efb 100644
--- a/pkgs/applications/networking/instant-messengers/slack/default.nix
+++ b/pkgs/applications/networking/instant-messengers/slack/default.nix
@@ -207,6 +207,6 @@ let
     '';
   };
 in
-if stdenv.isDarwin
+if stdenv.hostPlatform.isDarwin
 then darwin
 else linux
diff --git a/pkgs/applications/networking/instant-messengers/teamspeak/server.nix b/pkgs/applications/networking/instant-messengers/teamspeak/server.nix
index 577589f6a40b..f77da2638c3d 100644
--- a/pkgs/applications/networking/instant-messengers/teamspeak/server.nix
+++ b/pkgs/applications/networking/instant-messengers/teamspeak/server.nix
@@ -1,14 +1,14 @@
 { lib, stdenv, fetchurl, postgresql, autoPatchelfHook, writeScript }:
 
 let
-  arch = if stdenv.is64bit then "amd64" else "x86";
+  arch = if stdenv.hostPlatform.is64bit then "amd64" else "x86";
 in stdenv.mkDerivation rec {
   pname = "teamspeak-server";
   version = "3.13.7";
 
   src = fetchurl {
     url = "https://files.teamspeak-services.com/releases/server/${version}/teamspeak3-server_linux_${arch}-${version}.tar.bz2";
-    sha256 = if stdenv.is64bit
+    sha256 = if stdenv.hostPlatform.is64bit
       then "sha256-d1pXMamAmAHkyPkGbNm8ViobNoVTE5wSSfKgdA1QBB4="
       else "sha256-aMEDOnvBeKfzG8lDFhU8I5DYgG53IsCDBMV2MUyJi2g=";
   };
diff --git a/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix b/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix
index b19e3efa8ac7..102500c1c41b 100644
--- a/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix
+++ b/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix
@@ -42,7 +42,7 @@ let
     inherit stdenv;
   };
 
-  mainProgram = if stdenv.isLinux then "kotatogram-desktop" else "Kotatogram";
+  mainProgram = if stdenv.hostPlatform.isLinux then "kotatogram-desktop" else "Kotatogram";
 in
 stdenv.mkDerivation rec {
   pname = "kotatogram-desktop";
@@ -61,20 +61,20 @@ stdenv.mkDerivation rec {
     ./macos-opengl.patch
   ];
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace Telegram/ThirdParty/libtgvoip/os/linux/AudioInputALSA.cpp \
       --replace-fail '"libasound.so.2"' '"${alsa-lib}/lib/libasound.so.2"'
     substituteInPlace Telegram/ThirdParty/libtgvoip/os/linux/AudioOutputALSA.cpp \
       --replace-fail '"libasound.so.2"' '"${alsa-lib}/lib/libasound.so.2"'
     substituteInPlace Telegram/ThirdParty/libtgvoip/os/linux/AudioPulse.cpp \
       --replace-fail '"libpulse.so.0"' '"${libpulseaudio}/lib/libpulse.so.0"'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Telegram/lib_webrtc/webrtc/platform/mac/webrtc_environment_mac.mm \
       --replace-fail kAudioObjectPropertyElementMain kAudioObjectPropertyElementMaster
   '';
 
   # Wrapping the inside of the app bundles, avoiding double-wrapping
-  dontWrapQtApps = stdenv.isDarwin;
+  dontWrapQtApps = stdenv.hostPlatform.isDarwin;
 
   nativeBuildInputs = [
     pkg-config
@@ -83,11 +83,11 @@ stdenv.mkDerivation rec {
     python3
     wrapQtAppsHook
     removeReferencesTo
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     # to build bundled libdispatch
     clang
     gobject-introspection
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     lld
   ];
 
@@ -107,7 +107,7 @@ stdenv.mkDerivation rec {
     tg_owt
     microsoft-gsl
     boost
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
     kcoreaddons
     alsa-lib
@@ -115,7 +115,7 @@ stdenv.mkDerivation rec {
     hunspell
     jemalloc
     wayland
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk_11_0.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk_11_0.frameworks; [
     Cocoa
     CoreFoundation
     CoreServices
@@ -152,7 +152,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     NIX_CFLAGS_LINK = "-fuse-ld=lld";
   };
 
@@ -160,7 +160,7 @@ stdenv.mkDerivation rec {
     "-DTDESKTOP_API_TEST=ON"
   ];
 
-  installPhase = lib.optionalString stdenv.isDarwin ''
+  installPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     cp -r ${mainProgram}.app $out/Applications
     ln -s $out/{Applications/${mainProgram}.app/Contents/MacOS,bin}
@@ -172,7 +172,7 @@ stdenv.mkDerivation rec {
     remove-references-to -t ${tg_owt.dev} $out/bin/${mainProgram}
   '';
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     wrapQtApp $out/Applications/${mainProgram}.app/Contents/MacOS/${mainProgram}
   '';
 
diff --git a/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix b/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix
index e2f3c4ba884e..c136d121aa86 100644
--- a/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix
+++ b/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation {
     fetchSubmodules = true;
   };
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace src/modules/desktop_capture/linux/wayland/egl_dmabuf.cc \
       --replace '"libEGL.so.1"' '"${libGL}/lib/libEGL.so.1"' \
       --replace '"libGL.so.1"' '"${libGL}/lib/libGL.so.1"' \
@@ -64,7 +64,7 @@ stdenv.mkDerivation {
     crc32c
     libvpx
     abseil-cpp
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libX11
     libXtst
     libXcomposite
@@ -78,7 +78,7 @@ stdenv.mkDerivation {
     mesa
     libdrm
     libGL
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     Cocoa
     AppKit
     IOKit
diff --git a/pkgs/applications/networking/instant-messengers/telegram/telegram-desktop/default.nix b/pkgs/applications/networking/instant-messengers/telegram/telegram-desktop/default.nix
index 6aefc520c7e9..e3e8a3b3f6eb 100644
--- a/pkgs/applications/networking/instant-messengers/telegram/telegram-desktop/default.nix
+++ b/pkgs/applications/networking/instant-messengers/telegram/telegram-desktop/default.nix
@@ -81,7 +81,7 @@ stdenv.mkDerivation (finalAttrs: {
     ./scheme.patch
   ];
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace Telegram/ThirdParty/libtgvoip/os/linux/AudioInputALSA.cpp \
       --replace-fail '"libasound.so.2"' '"${alsa-lib}/lib/libasound.so.2"'
     substituteInPlace Telegram/ThirdParty/libtgvoip/os/linux/AudioOutputALSA.cpp \
@@ -90,7 +90,7 @@ stdenv.mkDerivation (finalAttrs: {
       --replace-fail '"libpulse.so.0"' '"${libpulseaudio}/lib/libpulse.so.0"'
     substituteInPlace Telegram/lib_webview/webview/platform/linux/webview_linux_webkitgtk_library.cpp \
       --replace-fail '"libwebkitgtk-6.0.so.4"' '"${webkitgtk_6_0}/lib/libwebkitgtk-6.0.so.4"'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Telegram/lib_webrtc/webrtc/platform/mac/webrtc_environment_mac.mm \
       --replace-fail kAudioObjectPropertyElementMain kAudioObjectPropertyElementMaster
   '';
@@ -105,11 +105,11 @@ stdenv.mkDerivation (finalAttrs: {
     ninja
     python3
     wrapQtAppsHook
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     gobject-introspection
     wrapGAppsHook3
     extra-cmake-modules
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     lld
   ];
 
@@ -132,7 +132,7 @@ stdenv.mkDerivation (finalAttrs: {
     microsoft-gsl
     rlottie
     ada
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
     gtk3
     glib-networking
@@ -144,7 +144,7 @@ stdenv.mkDerivation (finalAttrs: {
     hunspell
     webkitgtk_6_0
     jemalloc
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk_11_0.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk_11_0.frameworks; [
     Cocoa
     CoreFoundation
     CoreServices
@@ -180,7 +180,7 @@ stdenv.mkDerivation (finalAttrs: {
     libicns
   ]);
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     NIX_CFLAGS_LINK = "-fuse-ld=lld";
   };
 
@@ -198,20 +198,20 @@ stdenv.mkDerivation (finalAttrs: {
     export GI_GIR_PATH="$XDG_DATA_DIRS"
   '';
 
-  installPhase = lib.optionalString stdenv.isDarwin ''
+  installPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     cp -r ${finalAttrs.meta.mainProgram}.app $out/Applications
     ln -s $out/{Applications/${finalAttrs.meta.mainProgram}.app/Contents/MacOS,bin}
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     # This is necessary to run Telegram in a pure environment.
     # We also use gappsWrapperArgs from wrapGAppsHook.
     wrapProgram $out/bin/${finalAttrs.meta.mainProgram} \
       "''${gappsWrapperArgs[@]}" \
       "''${qtWrapperArgs[@]}" \
       --suffix PATH : ${lib.makeBinPath [ xdg-utils ]}
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     wrapQtApp $out/Applications/${finalAttrs.meta.mainProgram}.app/Contents/MacOS/${finalAttrs.meta.mainProgram}
   '';
 
diff --git a/pkgs/applications/networking/instant-messengers/telegram/tg/default.nix b/pkgs/applications/networking/instant-messengers/telegram/tg/default.nix
index 7cdbda355d38..d23ee405efc2 100644
--- a/pkgs/applications/networking/instant-messengers/telegram/tg/default.nix
+++ b/pkgs/applications/networking/instant-messengers/telegram/tg/default.nix
@@ -30,7 +30,7 @@ buildPythonApplication rec {
   ];
 
   # Fix notifications on platforms other than darwin by providing notify-send
-  postPatch = lib.optionalString (!stdenv.isDarwin) ''
+  postPatch = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     sed -i 's|^NOTIFY_CMD = .*|NOTIFY_CMD = "${libnotify}/bin/notify-send {title} {message} -i {icon_path}"|' tg/config.py
   '';
 
diff --git a/pkgs/applications/networking/instant-messengers/telepathy/logger/default.nix b/pkgs/applications/networking/instant-messengers/telepathy/logger/default.nix
index 4054219850b4..70612f529434 100644
--- a/pkgs/applications/networking/instant-messengers/telepathy/logger/default.nix
+++ b/pkgs/applications/networking/instant-messengers/telepathy/logger/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     dbus-glib libxml2 sqlite telepathy-glib
     dbus
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.Foundation
   ];
diff --git a/pkgs/applications/networking/instant-messengers/telepathy/mission-control/default.nix b/pkgs/applications/networking/instant-messengers/telepathy/mission-control/default.nix
index 92daa59ae415..5d4bfc5eab4b 100644
--- a/pkgs/applications/networking/instant-messengers/telepathy/mission-control/default.nix
+++ b/pkgs/applications/networking/instant-messengers/telepathy/mission-control/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     pkg-config
     libxslt
     makeWrapper
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     autoreconfHook
     gtk-doc
   ];
diff --git a/pkgs/applications/networking/instant-messengers/tensor/default.nix b/pkgs/applications/networking/instant-messengers/tensor/default.nix
index e90b8b697130..2a42692e412c 100644
--- a/pkgs/applications/networking/instant-messengers/tensor/default.nix
+++ b/pkgs/applications/networking/instant-messengers/tensor/default.nix
@@ -37,7 +37,7 @@ mkDerivation rec {
     mimeTypes = [ "application/x-chat" ];
   };
 
-  installPhase = if stdenv.isDarwin then ''
+  installPhase = if stdenv.hostPlatform.isDarwin then ''
     runHook preInstall
 
     mkdir -p $out/Applications
diff --git a/pkgs/applications/networking/instant-messengers/twitch-tui/default.nix b/pkgs/applications/networking/instant-messengers/twitch-tui/default.nix
index 31ef96cf80c6..8d3b36071874 100644
--- a/pkgs/applications/networking/instant-messengers/twitch-tui/default.nix
+++ b/pkgs/applications/networking/instant-messengers/twitch-tui/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     Security
     SystemConfiguration
diff --git a/pkgs/applications/networking/instant-messengers/vk-messenger/default.nix b/pkgs/applications/networking/instant-messengers/vk-messenger/default.nix
index 50be0777ae4e..60ed9d60b1e1 100644
--- a/pkgs/applications/networking/instant-messengers/vk-messenger/default.nix
+++ b/pkgs/applications/networking/instant-messengers/vk-messenger/default.nix
@@ -71,4 +71,4 @@ let
       cp -r *.app $out/Applications
     '';
   };
-in if stdenv.isDarwin then darwin else linux
+in if stdenv.hostPlatform.isDarwin then darwin else linux
diff --git a/pkgs/applications/networking/instant-messengers/wire-desktop/default.nix b/pkgs/applications/networking/instant-messengers/wire-desktop/default.nix
index 9d41b0455a72..22bf7fb11e6c 100644
--- a/pkgs/applications/networking/instant-messengers/wire-desktop/default.nix
+++ b/pkgs/applications/networking/instant-messengers/wire-desktop/default.nix
@@ -187,6 +187,6 @@ let
   };
 
 in
-if stdenv.isDarwin
+if stdenv.hostPlatform.isDarwin
 then darwin
 else linux
diff --git a/pkgs/applications/networking/irc/communi/default.nix b/pkgs/applications/networking/irc/communi/default.nix
index 84940c288bed..9c25ece8556b 100644
--- a/pkgs/applications/networking/irc/communi/default.nix
+++ b/pkgs/applications/networking/irc/communi/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   # libCommuni.dylib is installed in $out/Applications/Communi.app/Contents/Frameworks/ on Darwin
   # Wrapper hook thinks it's a binary because it's in $out/Applications, wraps it with a shell script
   # So we manually call the wrapper script on just the binary
-  dontWrapQtApps = stdenv.isDarwin;
+  dontWrapQtApps = stdenv.hostPlatform.isDarwin;
 
   preConfigure = ''
     export QMAKEFEATURES=${libcommuni}/features
@@ -47,11 +47,11 @@ stdenv.mkDerivation rec {
     "COMMUNI_INSTALL_ICONS=${placeholder "out"}/share/icons/hicolor"
     "COMMUNI_INSTALL_DESKTOP=${placeholder "out"}/share/applications"
     "COMMUNI_INSTALL_THEMES=${placeholder "out"}/share/communi/themes"
-    "COMMUNI_INSTALL_BINS=${placeholder "out"}/${if stdenv.isDarwin then "Applications" else "bin"}"
+    "COMMUNI_INSTALL_BINS=${placeholder "out"}/${if stdenv.hostPlatform.isDarwin then "Applications" else "bin"}"
   ];
 
   postInstall =
-    if stdenv.isDarwin then ''
+    if stdenv.hostPlatform.isDarwin then ''
       # Nix qmake does not add the bundle rpath by default.
       install_name_tool \
         -add_rpath @executable_path/../Frameworks \
diff --git a/pkgs/applications/networking/irc/convos/default.nix b/pkgs/applications/networking/irc/convos/default.nix
index 2fc2e0585910..c456875d016b 100644
--- a/pkgs/applications/networking/irc/convos/default.nix
+++ b/pkgs/applications/networking/irc/convos/default.nix
@@ -14,7 +14,7 @@ perlPackages.buildPerlPackage rec {
   };
 
   nativeBuildInputs = [ makeWrapper ]
-    ++ lib.optionals stdenv.isDarwin [ shortenPerlShebang ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ shortenPerlShebang ];
 
   buildInputs = with perlPackages; [
     CryptPassphrase CryptPassphraseArgon2 CryptPassphraseBcrypt
@@ -79,7 +79,7 @@ perlPackages.buildPerlPackage rec {
     ln -s $AUTO_SHARE_PATH/public/assets $out/assets
     cp -vR templates $out/templates
     cp Makefile.PL $out/Makefile.PL
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/convos
   '' + ''
     wrapProgram $out/bin/convos --set MOJO_HOME $out
diff --git a/pkgs/applications/networking/irc/epic5/default.nix b/pkgs/applications/networking/irc/epic5/default.nix
index 2331eaa4596d..c3a10cc39e9d 100644
--- a/pkgs/applications/networking/irc/epic5/default.nix
+++ b/pkgs/applications/networking/irc/epic5/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   # Darwin needs libiconv, tcl; while Linux build don't
   buildInputs = [ openssl ncurses libxcrypt ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv tcl ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv tcl ];
 
   patches = [
     (fetchpatch {
diff --git a/pkgs/applications/networking/irc/thelounge/default.nix b/pkgs/applications/networking/irc/thelounge/default.nix
index 729afb831d57..0abeec15939f 100644
--- a/pkgs/applications/networking/irc/thelounge/default.nix
+++ b/pkgs/applications/networking/irc/thelounge/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-MM6SgVT7Pjdu96A4eWRucEzT7uNPxBqUDgHKl8mH2C0=";
   };
 
-  nativeBuildInputs = [ nodejs yarn fixup-yarn-lock python3 npmHooks.npmInstallHook ] ++ lib.optional stdenv.isDarwin cctools;
+  nativeBuildInputs = [ nodejs yarn fixup-yarn-lock python3 npmHooks.npmInstallHook ] ++ lib.optional stdenv.hostPlatform.isDarwin cctools;
   buildInputs = [ sqlite ];
 
   configurePhase = ''
diff --git a/pkgs/applications/networking/irc/tiny/default.nix b/pkgs/applications/networking/irc/tiny/default.nix
index 583723c0d147..fa8f3edf5ad6 100644
--- a/pkgs/applications/networking/irc/tiny/default.nix
+++ b/pkgs/applications/networking/irc/tiny/default.nix
@@ -4,10 +4,10 @@
 , fetchFromGitHub
 , pkg-config
 , Foundation
-, dbusSupport ? stdenv.isLinux, dbus
+, dbusSupport ? stdenv.hostPlatform.isLinux, dbus
 # rustls will be used for TLS if useOpenSSL=false
-, useOpenSSL ? stdenv.isLinux, openssl
-, notificationSupport ? stdenv.isLinux
+, useOpenSSL ? stdenv.hostPlatform.isLinux, openssl
+, notificationSupport ? stdenv.hostPlatform.isLinux
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -23,10 +23,10 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-AhQCfLCoJU7o8s+XL3hDOPmZi9QjOxXSA9uglA1KSuY=";
 
-  nativeBuildInputs = lib.optional stdenv.isLinux pkg-config;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isLinux pkg-config;
   buildInputs = lib.optionals dbusSupport [ dbus ]
                 ++ lib.optionals useOpenSSL [ openssl ]
-                ++ lib.optional stdenv.isDarwin Foundation;
+                ++ lib.optional stdenv.hostPlatform.isDarwin Foundation;
 
   buildFeatures = lib.optional notificationSupport "desktop-notifications";
 
diff --git a/pkgs/applications/networking/irc/weechat/default.nix b/pkgs/applications/networking/irc/weechat/default.nix
index 42090534bcc3..8ac356b9183b 100644
--- a/pkgs/applications/networking/irc/weechat/default.nix
+++ b/pkgs/applications/networking/irc/weechat/default.nix
@@ -3,14 +3,14 @@
 , zlib, curl, pkg-config, libgcrypt
 , cmake, libobjc, libresolv, libiconv
 , asciidoctor # manpages
-, enableTests ? !stdenv.isDarwin, cpputest
+, enableTests ? !stdenv.hostPlatform.isDarwin, cpputest
 , guileSupport ? true, guile
 , luaSupport ? true, lua5
 , perlSupport ? true, perl
 , pythonSupport ? true, python3Packages
 , rubySupport ? true, ruby
 , tclSupport ? true, tcl
-, phpSupport ? !stdenv.isDarwin, php, systemd, libxml2, pcre2, libargon2
+, phpSupport ? !stdenv.hostPlatform.isDarwin, php, systemd, libxml2, pcre2, libargon2
 , extraBuildInputs ? []
 }:
 
@@ -29,7 +29,7 @@ let
     { name = "python"; enabled = pythonSupport; cmakeFlag = "ENABLE_PYTHON3"; buildInputs = [ python ]; }
     { name = "php"; enabled = phpSupport; cmakeFlag = "ENABLE_PHP"; buildInputs = [
       php-embed.unwrapped.dev libxml2 pcre2 libargon2
-    ] ++ lib.optional stdenv.isLinux systemd; }
+    ] ++ lib.optional stdenv.hostPlatform.isLinux systemd; }
   ];
   enabledPlugins = builtins.filter (p: p.enabled) plugins;
 
@@ -57,19 +57,19 @@ let
         "-DENABLE_DOC_INCOMPLETE=ON"
         "-DENABLE_TESTS=${if enableTests then "ON" else "OFF"}"
       ]
-        ++ lib.optionals stdenv.isDarwin ["-DICONV_LIBRARY=${libiconv}/lib/libiconv.dylib"]
+        ++ lib.optionals stdenv.hostPlatform.isDarwin ["-DICONV_LIBRARY=${libiconv}/lib/libiconv.dylib"]
         ++ map (p: "-D${p.cmakeFlag}=" + (if p.enabled then "ON" else "OFF")) plugins
         ;
 
       nativeBuildInputs = [ cmake pkg-config asciidoctor ] ++ lib.optional enableTests cpputest;
       buildInputs = [ ncurses openssl aspell cjson gnutls gettext zlib curl libgcrypt ]
-        ++ lib.optionals stdenv.isDarwin [ libobjc libresolv ]
+        ++ lib.optionals stdenv.hostPlatform.isDarwin [ libobjc libresolv ]
         ++ lib.concatMap (p: p.buildInputs) enabledPlugins
         ++ extraBuildInputs;
 
       env.NIX_CFLAGS_COMPILE = "-I${python}/include/${python.libPrefix}"
         # Fix '_res_9_init: undefined symbol' error
-        + (lib.optionalString stdenv.isDarwin "-DBIND_8_COMPAT=1 -lresolv");
+        + (lib.optionalString stdenv.hostPlatform.isDarwin "-DBIND_8_COMPAT=1 -lresolv");
 
       postInstall = ''
         for p in ${lib.concatMapStringsSep " " (p: p.name) enabledPlugins}; do
diff --git a/pkgs/applications/networking/irc/weechat/scripts/weechat-matrix-bridge/default.nix b/pkgs/applications/networking/irc/weechat/scripts/weechat-matrix-bridge/default.nix
index e51e6f061b07..22eb0849cc4a 100644
--- a/pkgs/applications/networking/irc/weechat/scripts/weechat-matrix-bridge/default.nix
+++ b/pkgs/applications/networking/irc/weechat/scripts/weechat-matrix-bridge/default.nix
@@ -46,6 +46,6 @@ stdenv.mkDerivation {
 
     # As of 2019-06-30, all of the dependencies are available on macOS but the
     # package itself does not build.
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/networking/irc/wraith/default.nix b/pkgs/applications/networking/irc/wraith/default.nix
index c059babffe7b..c046a0c2d7f9 100644
--- a/pkgs/applications/networking/irc/wraith/default.nix
+++ b/pkgs/applications/networking/irc/wraith/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "IRC channel management bot written purely in C/C++";
     longDescription = ''
       Wraith is an IRC channel management bot written purely in C/C++. It has
diff --git a/pkgs/applications/networking/iroh/default.nix b/pkgs/applications/networking/iroh/default.nix
index e3cd1999d81b..ba87e0f29364 100644
--- a/pkgs/applications/networking/iroh/default.nix
+++ b/pkgs/applications/networking/iroh/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-t1re2vpxGZkC45n0jUytqe2SPAC/+fh4Itq1h9znYnM=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks; [
       Security
       SystemConfiguration
diff --git a/pkgs/applications/networking/kubo-migrator/all-migrations.nix b/pkgs/applications/networking/kubo-migrator/all-migrations.nix
index 54ae2551caa3..d44fafb3be9e 100644
--- a/pkgs/applications/networking/kubo-migrator/all-migrations.nix
+++ b/pkgs/applications/networking/kubo-migrator/all-migrations.nix
@@ -63,7 +63,7 @@ let
     fs-repo-9-to-10
     fs-repo-8-to-9
     fs-repo-7-to-8
-  ] ++ lib.optional (!stdenv.isDarwin) # I didn't manage to fix this on macOS:
+  ] ++ lib.optional (!stdenv.hostPlatform.isDarwin) # I didn't manage to fix this on macOS:
     fs-repo-6-to-7                     # gx/ipfs/QmSGRM5Udmy1jsFBr1Cawez7Lt7LZ3ZKA23GGVEsiEW6F3/eventfd/eventfd.go:27:32: undefined: syscall.SYS_EVENTFD2
   ++ [
     fs-repo-5-to-6
diff --git a/pkgs/applications/networking/mailreaders/claws-mail/default.nix b/pkgs/applications/networking/mailreaders/claws-mail/default.nix
index ddc47d1800c3..d0345f946600 100644
--- a/pkgs/applications/networking/mailreaders/claws-mail/default.nix
+++ b/pkgs/applications/networking/mailreaders/claws-mail/default.nix
@@ -18,7 +18,7 @@
 , enableLdap ? true, openldap
 , enableNetworkManager ? true, networkmanager
 , enableLibetpan ? true, libetpan
-, enableValgrind ? !stdenv.isDarwin && lib.meta.availableOn stdenv.hostPlatform valgrind, valgrind
+, enableValgrind ? !stdenv.hostPlatform.isDarwin && lib.meta.availableOn stdenv.hostPlatform valgrind, valgrind
 , enableSvg ? true, librsvg
 
 # Configure claws-mail's plugins
diff --git a/pkgs/applications/networking/mailreaders/mmh/default.nix b/pkgs/applications/networking/mailreaders/mmh/default.nix
index 95c101002e2b..edcc48386a11 100644
--- a/pkgs/applications/networking/mailreaders/mmh/default.nix
+++ b/pkgs/applications/networking/mailreaders/mmh/default.nix
@@ -23,7 +23,7 @@ in stdenv.mkDerivation rec {
     homepage = "http://marmaro.de/prog/mmh";
     license = licenses.bsd3;
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ kaction ];
   };
 }
diff --git a/pkgs/applications/networking/mailreaders/sylpheed/default.nix b/pkgs/applications/networking/mailreaders/sylpheed/default.nix
index 48d14d78d8e1..9e765743dd63 100644
--- a/pkgs/applications/networking/mailreaders/sylpheed/default.nix
+++ b/pkgs/applications/networking/mailreaders/sylpheed/default.nix
@@ -33,13 +33,13 @@ stdenv.mkDerivation rec {
   buildInputs = [ gtk2 ]
     ++ lib.optionals gpgSupport [ gpgme ]
     ++ lib.optionals sslSupport [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Foundation ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Foundation ];
 
   configureFlags = lib.optional gpgSupport "--enable-gpgme"
     ++ lib.optional sslSupport "--enable-ssl";
 
   # Undefined symbols for architecture arm64: "_OBJC_CLASS_$_NSAutoreleasePool"
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-framework Foundation";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-framework Foundation";
 
   meta = with lib; {
     homepage = "https://sylpheed.sraoss.jp/en/";
diff --git a/pkgs/applications/networking/mhost/default.nix b/pkgs/applications/networking/mhost/default.nix
index 435f58d06850..777ea44dc7bd 100644
--- a/pkgs/applications/networking/mhost/default.nix
+++ b/pkgs/applications/networking/mhost/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-d2JYT/eJaGm8pfmjsuSZiQxlzcsypFH53F/9joW0J6I=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     SystemConfiguration
   ];
diff --git a/pkgs/applications/networking/mkchromecast/default.nix b/pkgs/applications/networking/mkchromecast/default.nix
index f6364f5ba572..b0df1210b318 100644
--- a/pkgs/applications/networking/mkchromecast/default.nix
+++ b/pkgs/applications/networking/mkchromecast/default.nix
@@ -25,7 +25,7 @@ let packages = [
   nodejs
   ffmpeg
   youtube-dl
-] ++ lib.optionals stdenv.isLinux [ pulseaudio ];
+] ++ lib.optionals stdenv.hostPlatform.isLinux [ pulseaudio ];
 
 in
 python3Packages.buildPythonApplication {
@@ -39,7 +39,7 @@ python3Packages.buildPythonApplication {
     sha256 = "sha256-dxsIcBPrZaXlsfzOEXhYj2qoK5LRducJG2ggMrMMl9Y=";
   };
 
-  buildInputs = lib.optional stdenv.isLinux qtwayland;
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux qtwayland;
   propagatedBuildInputs = with python3Packages; ([
     pychromecast
     psutil
@@ -72,7 +72,7 @@ python3Packages.buildPythonApplication {
   postInstall = ''
     substituteInPlace $out/${python3Packages.python.sitePackages}/mkchromecast/video.py \
       --replace '/usr/share/mkchromecast/nodejs/' '${placeholder "out"}/share/mkchromecast/nodejs/'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install -Dm 755 -t $out/bin bin/audiodevice
     substituteInPlace $out/${python3Packages.python.sitePackages}/mkchromecast/audio_devices.py \
       --replace './bin/audiodevice' '${placeholder "out"}/bin/audiodevice'
diff --git a/pkgs/applications/networking/mpop/default.nix b/pkgs/applications/networking/mpop/default.nix
index 7370ddd6e201..5e41ef5d2a91 100644
--- a/pkgs/applications/networking/mpop/default.nix
+++ b/pkgs/applications/networking/mpop/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs =
-    lib.optional stdenv.isDarwin Security
+    lib.optional stdenv.hostPlatform.isDarwin Security
     ++ lib.optional gsaslSupport gsasl
     ++ lib.optional idnSupport libidn
     ++ lib.optional (sslLibrary == "gnutls") gnutls
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     (lib.withFeature idnSupport "idn")
     (lib.withFeature gsaslSupport "gsasl")
     "--with-tls=${sslLibrary}"
-  ] ++ lib.optional stdenv.isDarwin "--with-macosx-keyring";
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "--with-macosx-keyring";
 
   meta = with lib;{
     description = "POP3 mail retrieval agent";
diff --git a/pkgs/applications/networking/msmtp/default.nix b/pkgs/applications/networking/msmtp/default.nix
index 6bd0f38ba6f4..15cd369ae335 100644
--- a/pkgs/applications/networking/msmtp/default.nix
+++ b/pkgs/applications/networking/msmtp/default.nix
@@ -48,10 +48,10 @@ let
     inherit version src meta;
 
     configureFlags = [ "--sysconfdir=/etc" "--with-libgsasl" ]
-      ++ optionals stdenv.isDarwin [ "--with-macosx-keyring" ];
+      ++ optionals stdenv.hostPlatform.isDarwin [ "--with-macosx-keyring" ];
 
     buildInputs = [ gnutls gsasl libidn2 ]
-      ++ optionals stdenv.isDarwin [ Security ]
+      ++ optionals stdenv.hostPlatform.isDarwin [ Security ]
       ++ optionals withKeyring [ libsecret ];
 
     nativeBuildInputs = [ autoreconfHook pkg-config texinfo ];
diff --git a/pkgs/applications/networking/mujmap/default.nix b/pkgs/applications/networking/mujmap/default.nix
index d89c17355046..8ee04ef19607 100644
--- a/pkgs/applications/networking/mujmap/default.nix
+++ b/pkgs/applications/networking/mujmap/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     notmuch
-  ] ++ lib.optional stdenv.isDarwin Security;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "JMAP integration for notmuch mail";
diff --git a/pkgs/applications/networking/mullvad/openvpn.nix b/pkgs/applications/networking/mullvad/openvpn.nix
index 0dcfeaabf677..af2a2d2e494e 100644
--- a/pkgs/applications/networking/mullvad/openvpn.nix
+++ b/pkgs/applications/networking/mullvad/openvpn.nix
@@ -31,7 +31,7 @@ openvpn.overrideAttrs (oldAttrs:
     ];
 
     buildInputs = oldAttrs.buildInputs or [ ]
-       ++ optional stdenv.isLinux [ libnl.dev ];
+       ++ optional stdenv.hostPlatform.isLinux [ libnl.dev ];
 
     configureFlags = [
       # Assignement instead of appending to make sure to use exactly the flags required by mullvad
@@ -52,7 +52,7 @@ openvpn.overrideAttrs (oldAttrs:
       "--disable-lz4"
       "--enable-comp-stub"
     ]
-    ++ optional stdenv.isLinux [
+    ++ optional stdenv.hostPlatform.isLinux [
       # Flags are based on https://github.com/mullvad/mullvadvpn-app-binaries/blob/main/Makefile#L35
       "--enable-dco" # requires libnl
       "--disable-iproute2"
diff --git a/pkgs/applications/networking/nload/default.nix b/pkgs/applications/networking/nload/default.nix
index a2b2731b3b03..3f97981528f5 100644
--- a/pkgs/applications/networking/nload/default.nix
+++ b/pkgs/applications/networking/nload/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin autoreconfHook;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin autoreconfHook;
   buildInputs = [ ncurses ];
 
   meta = {
diff --git a/pkgs/applications/networking/nym/default.nix b/pkgs/applications/networking/nym/default.nix
index fc2095caaf21..41fe108b99f2 100644
--- a/pkgs/applications/networking/nym/default.nix
+++ b/pkgs/applications/networking/nym/default.nix
@@ -45,7 +45,7 @@ rustPlatform.buildRustPackage {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security CoreServices ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security CoreServices ];
 
   checkType = "debug";
 
diff --git a/pkgs/applications/networking/offrss/default.nix b/pkgs/applications/networking/offrss/default.nix
index 081f7d96c1aa..89853c8a088d 100644
--- a/pkgs/applications/networking/offrss/default.nix
+++ b/pkgs/applications/networking/offrss/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ curl libmrss ]
     ++ lib.optional (stdenv.hostPlatform == stdenv.buildPlatform) podofo
-    ++ lib.optional (!stdenv.isLinux) libiconv;
+    ++ lib.optional (!stdenv.hostPlatform.isLinux) libiconv;
 
   # Workaround build failure on -fno-common toolchains:
   #   ld: serve_pdf.o:offrss.h:75: multiple definition of `cgi_url_path';
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   configurePhase = ''
     substituteInPlace Makefile \
       --replace '$(CC) $(CFLAGS) $(LDFLAGS)' '$(CXX) $(CFLAGS) $(LDFLAGS)'
-  '' + lib.optionalString (!stdenv.isLinux) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isLinux) ''
     sed 's/#EXTRA/EXTRA/' -i Makefile
   '' + lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
     sed 's/^PDF/#PDF/' -i Makefile
diff --git a/pkgs/applications/networking/omping/default.nix b/pkgs/applications/networking/omping/default.nix
index 808df455a4f2..1efcd98b46f8 100644
--- a/pkgs/applications/networking/omping/default.nix
+++ b/pkgs/applications/networking/omping/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Open Multicast Ping (omping) is a tool for testing IPv4/IPv6 multicast connectivity on a LAN";
     license = licenses.mit;
     platforms = platforms.unix;
diff --git a/pkgs/applications/networking/onionshare/default.nix b/pkgs/applications/networking/onionshare/default.nix
index 18d791f53402..9e7152393a4d 100644
--- a/pkgs/applications/networking/onionshare/default.nix
+++ b/pkgs/applications/networking/onionshare/default.nix
@@ -102,9 +102,9 @@ rec {
       export HOME="$(mktemp -d)"
     '';
 
-    disabledTests = lib.optionals stdenv.isLinux [
+    disabledTests = lib.optionals stdenv.hostPlatform.isLinux [
       "test_get_tor_paths_linux"  # expects /usr instead of /nix/store
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # requires meek-client which is not packaged
       "test_get_tor_paths_darwin"
       # on darwin (and only on darwin) onionshare attempts to discover
diff --git a/pkgs/applications/networking/p2p/eiskaltdcpp/default.nix b/pkgs/applications/networking/p2p/eiskaltdcpp/default.nix
index 67dab32e113f..61501dbeb20e 100644
--- a/pkgs/applications/networking/p2p/eiskaltdcpp/default.nix
+++ b/pkgs/applications/networking/p2p/eiskaltdcpp/default.nix
@@ -26,7 +26,7 @@ mkDerivation rec {
       GetoptLong
       TermShellUI
     ])) ]
-    ++ lib.optional stdenv.isDarwin libiconv;
+    ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   cmakeFlags = [
     "-DDBUS_NOTIFY=ON"
diff --git a/pkgs/applications/networking/p2p/enhanced-ctorrent/default.nix b/pkgs/applications/networking/p2p/enhanced-ctorrent/default.nix
index e8432b4c5c24..507469022804 100644
--- a/pkgs/applications/networking/p2p/enhanced-ctorrent/default.nix
+++ b/pkgs/applications/networking/p2p/enhanced-ctorrent/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
   ];
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "BitTorrent client written in C++";
     mainProgram = "ctorrent";
     longDescription = ''
diff --git a/pkgs/applications/networking/p2p/mldonkey/default.nix b/pkgs/applications/networking/p2p/mldonkey/default.nix
index 81a625e5210f..d83a33833b0b 100644
--- a/pkgs/applications/networking/p2p/mldonkey/default.nix
+++ b/pkgs/applications/networking/p2p/mldonkey/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
   buildInputs = (with ocamlPackages; [ num ]) ++ [ zlib ];
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Client for many p2p networks, with multiple frontends";
     homepage = "https://github.com/ygrek/mldonkey";
     license = lib.licenses.gpl2Only;
diff --git a/pkgs/applications/networking/p2p/pyrosimple/default.nix b/pkgs/applications/networking/p2p/pyrosimple/default.nix
index 795f6969ff48..240dc4199801 100644
--- a/pkgs/applications/networking/p2p/pyrosimple/default.nix
+++ b/pkgs/applications/networking/p2p/pyrosimple/default.nix
@@ -5,7 +5,7 @@
 , pyrosimple
 , python3
 , testers
-, withInotify ? stdenv.isLinux
+, withInotify ? stdenv.hostPlatform.isLinux
 }:
 
 python3.pkgs.buildPythonApplication rec {
diff --git a/pkgs/applications/networking/p2p/qbittorrent/default.nix b/pkgs/applications/networking/p2p/qbittorrent/default.nix
index 1ec2cbac9ce4..54793401abbe 100644
--- a/pkgs/applications/networking/p2p/qbittorrent/default.nix
+++ b/pkgs/applications/networking/p2p/qbittorrent/default.nix
@@ -52,11 +52,11 @@ stdenv.mkDerivation rec {
     qtbase
     qtsvg
     qttools
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ] ++ lib.optionals guiSupport [
     dbus
-  ] ++ lib.optionals (guiSupport && stdenv.isLinux) [
+  ] ++ lib.optionals (guiSupport && stdenv.hostPlatform.isLinux) [
     qtwayland
   ] ++ lib.optionals trackerSearch [
     python3
@@ -78,7 +78,7 @@ stdenv.mkDerivation rec {
 
   dontWrapGApps = true;
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     APP_NAME=qbittorrent${lib.optionalString (!guiSupport) "-nox"}
     mkdir -p $out/{Applications,bin}
     cp -R $APP_NAME.app $out/Applications
diff --git a/pkgs/applications/networking/p2p/synapse-bt/default.nix b/pkgs/applications/networking/p2p/synapse-bt/default.nix
index 9ab60d5a18f4..120afed45de6 100644
--- a/pkgs/applications/networking/p2p/synapse-bt/default.nix
+++ b/pkgs/applications/networking/p2p/synapse-bt/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ CoreServices Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices Security ];
 
   cargoBuildFlags = [ "--all" ];
 
diff --git a/pkgs/applications/networking/p2p/transmission/4.nix b/pkgs/applications/networking/p2p/transmission/4.nix
index dd27a22168b4..25296efe6926 100644
--- a/pkgs/applications/networking/p2p/transmission/4.nix
+++ b/pkgs/applications/networking/p2p/transmission/4.nix
@@ -55,7 +55,7 @@ let
     zlib
   ]
   ++ optionals enableSystemd [ systemd ]
-  ++ optionals stdenv.isLinux [ inotify-tools ]);
+  ++ optionals stdenv.hostPlatform.isLinux [ inotify-tools ]);
 
 in
 stdenv.mkDerivation (finalAttrs: {
@@ -93,7 +93,7 @@ stdenv.mkDerivation (finalAttrs: {
     (cmakeBool "ENABLE_MAC" false) # requires xcodebuild
     (cmakeBool "ENABLE_QT" (enableQt5 || enableQt6))
     (cmakeBool "INSTALL_LIB" installLib)
-  ] ++ optionals stdenv.isDarwin [
+  ] ++ optionals stdenv.hostPlatform.isDarwin [
     # Transmission sets this to 10.13 if not explicitly specified, see https://github.com/transmission/transmission/blob/0be7091eb12f4eb55f6690f313ef70a66795ee72/CMakeLists.txt#L7-L16.
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=${stdenv.hostPlatform.darwinMinVersion}"
   ];
@@ -145,8 +145,8 @@ stdenv.mkDerivation (finalAttrs: {
   ++ optionals enableQt6 (with qt6Packages; [ qttools qtbase qtsvg ])
   ++ optionals enableGTK3 [ gtkmm3 xorg.libpthreadstubs ]
   ++ optionals enableSystemd [ systemd ]
-  ++ optionals stdenv.isLinux [ inotify-tools ]
-  ++ optionals stdenv.isDarwin [ libiconv Foundation ];
+  ++ optionals stdenv.hostPlatform.isLinux [ inotify-tools ]
+  ++ optionals stdenv.hostPlatform.isDarwin [ libiconv Foundation ];
 
   postInstall = ''
     mkdir $apparmor
diff --git a/pkgs/applications/networking/p2p/tremc/default.nix b/pkgs/applications/networking/p2p/tremc/default.nix
index 8f3b2c6e35ef..98ab36dac08a 100644
--- a/pkgs/applications/networking/p2p/tremc/default.nix
+++ b/pkgs/applications/networking/p2p/tremc/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, fetchFromGitHub, fetchpatch, python3Packages
-, x11Support ? !stdenv.isDarwin
+, x11Support ? !stdenv.hostPlatform.isDarwin
 , xclip ? null
 , pbcopy ? null
 , useGeoIP ? false # Require /var/lib/geoip-databases/GeoIP.dat
@@ -7,7 +7,7 @@
 let
   wrapperPath = lib.makeBinPath (
     lib.optional x11Support xclip ++
-    lib.optional stdenv.isDarwin pbcopy
+    lib.optional stdenv.hostPlatform.isDarwin pbcopy
   );
 in
 python3Packages.buildPythonApplication rec {
diff --git a/pkgs/applications/networking/pjsip/default.nix b/pkgs/applications/networking/pjsip/default.nix
index f27a57012366..3cdfe57c8a5f 100644
--- a/pkgs/applications/networking/pjsip/default.nix
+++ b/pkgs/applications/networking/pjsip/default.nix
@@ -50,8 +50,8 @@ stdenv.mkDerivation (finalAttrs: {
       openssl
       libsamplerate
     ]
-    ++ lib.optional stdenv.isLinux alsa-lib
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optional stdenv.hostPlatform.isLinux alsa-lib
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       AppKit
       CoreFoundation
       Security
@@ -59,7 +59,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   env =
     lib.optionalAttrs stdenv.cc.isClang { CXXFLAGS = "-std=c++11"; }
-    // lib.optionalAttrs stdenv.isDarwin { NIX_CFLAGS_LINK = "-headerpad_max_install_names"; };
+    // lib.optionalAttrs stdenv.hostPlatform.isDarwin { NIX_CFLAGS_LINK = "-headerpad_max_install_names"; };
 
   preConfigure = ''
     export LD=$CC
@@ -86,7 +86,7 @@ stdenv.mkDerivation (finalAttrs: {
           python -m installer --prefix $py dist/*.whl
       )
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # On MacOS relative paths are used to refer to libraries. All libraries use
       # a relative path like ../lib/*.dylib or ../../lib/*.dylib. We need to
       # rewrite these to use absolute ones.
diff --git a/pkgs/applications/networking/qv2ray/default.nix b/pkgs/applications/networking/qv2ray/default.nix
index 01e471c97de9..1105933a9afa 100644
--- a/pkgs/applications/networking/qv2ray/default.nix
+++ b/pkgs/applications/networking/qv2ray/default.nix
@@ -30,7 +30,7 @@ mkDerivation rec {
     fetchSubmodules = true;
   };
 
-  postPatch = lib.optionals stdenv.isDarwin ''
+  postPatch = lib.optionals stdenv.hostPlatform.isDarwin ''
     substituteInPlace cmake/platforms/macos.cmake \
       --replace \''${QV2RAY_QtX_DIR}/../../../bin/macdeployqt macdeployqt
   '';
@@ -76,7 +76,7 @@ mkDerivation rec {
     maintainers = with maintainers; [ poscat rewine ];
     platforms = platforms.all;
     # never built on aarch64-darwin, x86_64-darwin since update to unstable-2022-09-25
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "qv2ray";
   };
 }
diff --git a/pkgs/applications/networking/remote/citrix-workspace/generic.nix b/pkgs/applications/networking/remote/citrix-workspace/generic.nix
index 18c3da84c3bf..b59a82f720dc 100644
--- a/pkgs/applications/networking/remote/citrix-workspace/generic.nix
+++ b/pkgs/applications/networking/remote/citrix-workspace/generic.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
 
     message = ''
       In order to use Citrix Workspace, you need to comply with the Citrix EULA and download
-      the ${if stdenv.is64bit then "64-bit" else "32-bit"} binaries, .tar.gz from:
+      the ${if stdenv.hostPlatform.is64bit then "64-bit" else "32-bit"} binaries, .tar.gz from:
 
       ${homepage}
 
diff --git a/pkgs/applications/networking/remote/citrix-workspace/sources.nix b/pkgs/applications/networking/remote/citrix-workspace/sources.nix
index 1b0826c4d2bd..2b5d0e9d7b14 100644
--- a/pkgs/applications/networking/remote/citrix-workspace/sources.nix
+++ b/pkgs/applications/networking/remote/citrix-workspace/sources.nix
@@ -3,9 +3,9 @@
 let
   mkVersionInfo = _: { major, minor, patch, x64hash, x86hash, x64suffix, x86suffix, homepage }:
     { inherit homepage;
-      version = "${major}.${minor}.${patch}.${if stdenv.is64bit then x64suffix else x86suffix}";
-      prefix = "linuxx${if stdenv.is64bit then "64" else "86"}";
-      hash = if stdenv.is64bit then x64hash else x86hash;
+      version = "${major}.${minor}.${patch}.${if stdenv.hostPlatform.is64bit then x64suffix else x86suffix}";
+      prefix = "linuxx${if stdenv.hostPlatform.is64bit then "64" else "86"}";
+      hash = if stdenv.hostPlatform.is64bit then x64hash else x86hash;
     };
 
   # Attribute-set with all actively supported versions of the Citrix workspace app
diff --git a/pkgs/applications/networking/remote/freerdp/3.nix b/pkgs/applications/networking/remote/freerdp/3.nix
index 31d5b2beee44..49b412bf7663 100644
--- a/pkgs/applications/networking/remote/freerdp/3.nix
+++ b/pkgs/applications/networking/remote/freerdp/3.nix
@@ -152,13 +152,13 @@ stdenv.mkDerivation (finalAttrs: {
     SDL2_image
     uriparser
     zlib
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     fuse3
     systemd
     wayland
     wayland-scanner
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AudioToolbox
     AVFoundation
     Carbon
@@ -179,7 +179,7 @@ stdenv.mkDerivation (finalAttrs: {
     WITH_CUPS = cups != null;
     WITH_FAAC = withUnfree && faac != null;
     WITH_FAAD2 = faad2 != null;
-    WITH_FUSE = stdenv.isLinux && fuse3 != null;
+    WITH_FUSE = stdenv.hostPlatform.isLinux && fuse3 != null;
     WITH_JPEG = libjpeg_turbo != null;
     WITH_KRB5 = libkrb5 != null;
     WITH_OPENH264 = openh264 != null;
@@ -194,7 +194,7 @@ stdenv.mkDerivation (finalAttrs: {
     WITH_X11 = true;
   };
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-DTARGET_OS_IPHONE=0"
     "-DTARGET_OS_WATCH=0"
     "-include AudioToolbox/AudioToolbox.h"
@@ -202,7 +202,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-Wno-error=incompatible-function-pointer-types"
   ]);
 
-  env.NIX_LDFLAGS = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_LDFLAGS = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-framework AudioToolbox"
   ]);
 
diff --git a/pkgs/applications/networking/remote/freerdp/default.nix b/pkgs/applications/networking/remote/freerdp/default.nix
index 988986812e30..7490066c7327 100644
--- a/pkgs/applications/networking/remote/freerdp/default.nix
+++ b/pkgs/applications/networking/remote/freerdp/default.nix
@@ -64,7 +64,7 @@ let
       dir = "libfreerdp/crypto/test";
       file = "Test_x509_cert_info.c";
     }
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     {
       dir = "winpr/libwinpr/sysinfo/test";
       file = "TestGetComputerName.c";
@@ -140,11 +140,11 @@ stdenv.mkDerivation rec {
     pcre2
     pcsclite
     zlib
-  ] ++ optionals stdenv.isLinux [
+  ] ++ optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     systemd
     wayland
-  ] ++ optionals stdenv.isDarwin [
+  ] ++ optionals stdenv.hostPlatform.isDarwin [
     AudioToolbox
     AVFoundation
     Carbon
@@ -185,7 +185,7 @@ stdenv.mkDerivation rec {
     WITH_X11 = true;
   };
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-DTARGET_OS_IPHONE=0"
     "-DTARGET_OS_WATCH=0"
     "-include AudioToolbox/AudioToolbox.h"
@@ -193,7 +193,7 @@ stdenv.mkDerivation rec {
     "-Wno-error=incompatible-function-pointer-types"
   ]);
 
-  NIX_LDFLAGS = lib.optionals stdenv.isDarwin [
+  NIX_LDFLAGS = lib.optionals stdenv.hostPlatform.isDarwin [
     "-framework AudioToolbox"
   ];
 
diff --git a/pkgs/applications/networking/remote/putty/default.nix b/pkgs/applications/networking/remote/putty/default.nix
index 82f096699b20..585f48d3a5f8 100644
--- a/pkgs/applications/networking/remote/putty/default.nix
+++ b/pkgs/applications/networking/remote/putty/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake perl pkg-config copyDesktopItems ];
   buildInputs = lib.optionals stdenv.hostPlatform.isUnix [
     gtk3 ncurses
-  ] ++ lib.optional stdenv.isDarwin darwin.apple_sdk.libs.utmp;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.libs.utmp;
   enableParallelBuilding = true;
 
   desktopItems = [
diff --git a/pkgs/applications/networking/remote/rdesktop/default.nix b/pkgs/applications/networking/remote/rdesktop/default.nix
index a544984ee76b..b92822b17d3f 100644
--- a/pkgs/applications/networking/remote/rdesktop/default.nix
+++ b/pkgs/applications/networking/remote/rdesktop/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, fetchFromGitHub, openssl, libX11, krb5, libXcursor, libtasn1
 , nettle, gnutls, pkg-config, autoreconfHook, libiconv
-, enableCredssp ? (!stdenv.isDarwin)
+, enableCredssp ? (!stdenv.hostPlatform.isDarwin)
 } :
 
 stdenv.mkDerivation (rec {
@@ -17,7 +17,7 @@ stdenv.mkDerivation (rec {
   nativeBuildInputs = [pkg-config autoreconfHook];
   buildInputs = [openssl libX11 libXcursor libtasn1 nettle gnutls]
     ++ lib.optional enableCredssp krb5
-    ++ lib.optional stdenv.isDarwin libiconv;
+    ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   configureFlags = [
     "--with-ipv6"
diff --git a/pkgs/applications/networking/remote/remmina/default.nix b/pkgs/applications/networking/remote/remmina/default.nix
index c960d0b473b2..eb926ff1c066 100644
--- a/pkgs/applications/networking/remote/remmina/default.nix
+++ b/pkgs/applications/networking/remote/remmina/default.nix
@@ -10,8 +10,8 @@
 , wayland
 # The themes here are soft dependencies; only icons are missing without them.
 , adwaita-icon-theme
-, withKf5Wallet ? stdenv.isLinux, libsForQt5
-, withLibsecret ? stdenv.isLinux
+, withKf5Wallet ? stdenv.hostPlatform.isLinux, libsForQt5
+, withLibsecret ? stdenv.hostPlatform.isLinux
 , withWebkitGtk ? false, webkitgtk_4_1
 , withVte ? true, vte
 }:
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   nativeBuildInputs = [ cmake ninja pkg-config wrapGAppsHook3 ]
-    ++ lib.optionals stdenv.isDarwin [ desktopToDarwinBundle ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ desktopToDarwinBundle ];
 
   buildInputs = [
     curl
@@ -51,7 +51,7 @@ stdenv.mkDerivation (finalAttrs: {
     openssl adwaita-icon-theme json-glib libsodium
     harfbuzz python3
     wayland
-  ] ++ lib.optionals stdenv.isLinux [ fuse3 libappindicator-gtk3 libdbusmenu-gtk3 ]
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ fuse3 libappindicator-gtk3 libdbusmenu-gtk3 ]
     ++ lib.optionals withLibsecret [ libsecret ]
     ++ lib.optionals withKf5Wallet [ libsForQt5.kwallet ]
     ++ lib.optionals withWebkitGtk [ webkitgtk_4_1 ]
@@ -65,13 +65,13 @@ stdenv.mkDerivation (finalAttrs: {
     "-DWITH_KF5WALLET=${if withKf5Wallet then "ON" else "OFF"}"
     "-DWITH_LIBSECRET=${if withLibsecret then "ON" else "OFF"}"
     "-DWITH_WEBKIT2GTK=${if withWebkitGtk then "ON" else "OFF"}"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DHAVE_LIBAPPINDICATOR=OFF"
     "-DWITH_CUPS=OFF"
     "-DWITH_ICON_CACHE=OFF"
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin (toString [
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin (toString [
     "-DTARGET_OS_IPHONE=0"
     "-DTARGET_OS_WATCH=0"
   ]);
@@ -82,7 +82,7 @@ stdenv.mkDerivation (finalAttrs: {
     gappsWrapperArgs+=(
       --set-default SSL_CERT_DIR "/etc/ssl/certs/"
       --prefix LD_LIBRARY_PATH : "${libX11.out}/lib"
-      ${lib.optionalString stdenv.isDarwin ''
+      ${lib.optionalString stdenv.hostPlatform.isDarwin ''
         --prefix XDG_DATA_DIRS : "$XDG_ICON_DIRS"
       ''}
     )
diff --git a/pkgs/applications/networking/rymdport/default.nix b/pkgs/applications/networking/rymdport/default.nix
index 08c5243414da..70b446db8a5a 100644
--- a/pkgs/applications/networking/rymdport/default.nix
+++ b/pkgs/applications/networking/rymdport/default.nix
@@ -35,7 +35,7 @@ buildGoModule rec {
     libXinerama
     libXrandr
     libXxf86vm
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Carbon
     Cocoa
     IOKit
diff --git a/pkgs/applications/networking/sniffers/qtwirediff/default.nix b/pkgs/applications/networking/sniffers/qtwirediff/default.nix
index 7cadaee0e203..ad71c217dbb9 100644
--- a/pkgs/applications/networking/sniffers/qtwirediff/default.nix
+++ b/pkgs/applications/networking/sniffers/qtwirediff/default.nix
@@ -27,17 +27,17 @@ stdenv.mkDerivation {
 
   buildInputs = [
     qtbase
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
   ];
 
   installPhase = ''
     runHook preInstall
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     cp -r qtwirediff.app $out/Applications
     makeWrapper $out/{Applications/qtwirediff.app/Contents/MacOS,bin}/qtwirediff
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     install -Dm755 -T qtwirediff $out/bin/qtwirediff
     wrapProgram $out/bin/qtwirediff \
       --prefix PATH : "${lib.makeBinPath [ wireshark-cli ]}"
diff --git a/pkgs/applications/networking/sniffers/wireshark/default.nix b/pkgs/applications/networking/sniffers/wireshark/default.nix
index 191924ac7002..04f62befcc9b 100644
--- a/pkgs/applications/networking/sniffers/wireshark/default.nix
+++ b/pkgs/applications/networking/sniffers/wireshark/default.nix
@@ -51,7 +51,7 @@
 , qt6 ? null
 }:
 let
-  isAppBundle = withQt && stdenv.isDarwin;
+  isAppBundle = withQt && stdenv.hostPlatform.isDarwin;
 in
 assert withQt -> qt6 != null;
 
@@ -89,7 +89,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optionals withQt [
     qt6.wrapQtAppsHook
     wrapGAppsHook3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
 
@@ -126,13 +126,13 @@ stdenv.mkDerivation rec {
     qtmultimedia
     qtsvg
     qttools
-  ]) ++ lib.optionals (withQt && stdenv.isLinux) [
+  ]) ++ lib.optionals (withQt && stdenv.hostPlatform.isLinux) [
     qt6.qtwayland
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libcap
     libnl
     sbc
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ApplicationServices
     gmp
     SystemConfiguration
@@ -171,7 +171,7 @@ stdenv.mkDerivation rec {
   '' + lib.optionalString isAppBundle ''
     mkdir -p $out/Applications
     mv $out/bin/Wireshark.app $out/Applications/Wireshark.app
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     local flags=()
     for file in $out/lib/*.dylib; do
       flags+=(-change @rpath/"$(basename "$file")" "$file")
diff --git a/pkgs/applications/networking/sniffnet/default.nix b/pkgs/applications/networking/sniffnet/default.nix
index 79df10e20751..146c0941e850 100644
--- a/pkgs/applications/networking/sniffnet/default.nix
+++ b/pkgs/applications/networking/sniffnet/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     libpcap
     openssl
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     expat
     fontconfig
@@ -42,7 +42,7 @@ rustPlatform.buildRustPackage rec {
     xorg.libXcursor
     xorg.libXi
     xorg.libXrandr
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     rustPlatform.bindgenHook
   ];
@@ -62,7 +62,7 @@ rustPlatform.buildRustPackage rec {
       --replace 'Exec=/usr/bin/sniffnet' 'Exec=sniffnet'
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf $out/bin/sniffnet \
       --add-rpath ${lib.makeLibraryPath [ vulkan-loader xorg.libX11 libxkbcommon wayland ]}
   '';
diff --git a/pkgs/applications/networking/sync/celeste/default.nix b/pkgs/applications/networking/sync/celeste/default.nix
index fe2d7b07acc8..b1a946f244f9 100644
--- a/pkgs/applications/networking/sync/celeste/default.nix
+++ b/pkgs/applications/networking/sync/celeste/default.nix
@@ -66,12 +66,12 @@ rustPlatform.buildRustPackage rec {
     libadwaita
     librclone
     pango
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
     darwin.apple_sdk.frameworks.Security
   ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-Wno-error=incompatible-function-pointer-types"
   ]);
 
diff --git a/pkgs/applications/networking/sync/lsyncd/default.nix b/pkgs/applications/networking/sync/lsyncd/default.nix
index bdb1b69289fe..66fa5665ccaf 100644
--- a/pkgs/applications/networking/sync/lsyncd/default.nix
+++ b/pkgs/applications/networking/sync/lsyncd/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   # Special flags needed on Darwin:
   # https://github.com/axkibe/lsyncd/blob/42413cabbedca429d55a5378f6e830f191f3cc86/INSTALL#L51
-  cmakeFlags = lib.optionals stdenv.isDarwin [ "-DWITH_INOTIFY=OFF" "-DWITH_FSEVENTS=ON" "-DXNU_DIR=${xnu}/include" ];
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "-DWITH_INOTIFY=OFF" "-DWITH_FSEVENTS=ON" "-DXNU_DIR=${xnu}/include" ];
 
   dontUseCmakeBuildDir = true;
 
diff --git a/pkgs/applications/networking/sync/rclone/default.nix b/pkgs/applications/networking/sync/rclone/default.nix
index df4001e1d0b7..a76ad3ab4421 100644
--- a/pkgs/applications/networking/sync/rclone/default.nix
+++ b/pkgs/applications/networking/sync/rclone/default.nix
@@ -23,13 +23,13 @@ buildGoModule rec {
 
   nativeBuildInputs = [ installShellFiles makeWrapper ];
 
-  buildInputs = lib.optional enableCmount (if stdenv.isDarwin then macfuse-stubs else fuse);
+  buildInputs = lib.optional enableCmount (if stdenv.hostPlatform.isDarwin then macfuse-stubs else fuse);
 
   tags = lib.optionals enableCmount [ "cmount" ];
 
   ldflags = [ "-s" "-w" "-X github.com/rclone/rclone/fs.Version=${version}" ];
 
-  postConfigure = lib.optionalString (!stdenv.isDarwin) ''
+  postConfigure = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     substituteInPlace vendor/github.com/winfsp/cgofuse/fuse/host_cgo.go \
         --replace-fail '"libfuse.so.2"' '"${lib.getLib fuse}/lib/libfuse.so.2"'
   '';
@@ -51,7 +51,7 @@ buildGoModule rec {
       # filesystem helpers
       ln -s $out/bin/rclone $out/bin/rclonefs
       ln -s $out/bin/rclone $out/bin/mount.rclone
-    '' + lib.optionalString (enableCmount && !stdenv.isDarwin)
+    '' + lib.optionalString (enableCmount && !stdenv.hostPlatform.isDarwin)
       # use --suffix here to ensure we don't shadow /run/wrappers/bin/fusermount3,
       # as the setuid wrapper is required as non-root on NixOS.
       ''
diff --git a/pkgs/applications/networking/syncplay/default.nix b/pkgs/applications/networking/syncplay/default.nix
index 956dd598d4c3..f7d0fdeb5c36 100644
--- a/pkgs/applications/networking/syncplay/default.nix
+++ b/pkgs/applications/networking/syncplay/default.nix
@@ -28,11 +28,11 @@ buildPythonApplication rec {
     ./trusted_certificates.patch
   ];
 
-  buildInputs = lib.optionals enableGUI [ (if stdenv.isLinux then qt6.qtwayland else qt6.qtbase) ];
+  buildInputs = lib.optionals enableGUI [ (if stdenv.hostPlatform.isLinux then qt6.qtwayland else qt6.qtbase) ];
   propagatedBuildInputs = [ certifi pem twisted ]
     ++ twisted.optional-dependencies.tls
     ++ lib.optional enableGUI pyside6
-    ++ lib.optional (stdenv.isDarwin && enableGUI) appnope;
+    ++ lib.optional (stdenv.hostPlatform.isDarwin && enableGUI) appnope;
   nativeBuildInputs = lib.optionals enableGUI [ qt6.wrapQtAppsHook ];
 
   makeFlags = [ "DESTDIR=" "PREFIX=$(out)" ];
diff --git a/pkgs/applications/networking/syncthing/default.nix b/pkgs/applications/networking/syncthing/default.nix
index 99934a964638..b87752f0412b 100644
--- a/pkgs/applications/networking/syncthing/default.nix
+++ b/pkgs/applications/networking/syncthing/default.nix
@@ -24,7 +24,7 @@ let
 
       vendorHash = "sha256-R5GlsCkfoMc5km+NaV+TNUlM3Ot1ARcXfEFimcZOLI4=";
 
-      nativeBuildInputs = lib.optionals stdenv.isDarwin [
+      nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
         # Recent versions of macOS seem to require binaries to be signed when
         # run from Launch Agents/Daemons, even on x86 devices where it has a
         # more lax code signing policy compared to Apple Silicon. So just sign
@@ -87,7 +87,7 @@ in
         install -Dm644 "$mf" "$mandir/$(basename "$mf")"
       done
 
-    '' + lib.optionalString (stdenv.isLinux) ''
+    '' + lib.optionalString (stdenv.hostPlatform.isLinux) ''
       mkdir -p $out/lib/systemd/{system,user}
 
       substitute etc/linux-systemd/system/syncthing@.service \
@@ -109,7 +109,7 @@ in
     stname = "syncthing-relay";
     target = "strelaysrv";
 
-    postInstall = lib.optionalString (stdenv.isLinux) ''
+    postInstall = lib.optionalString (stdenv.hostPlatform.isLinux) ''
       mkdir -p $out/lib/systemd/system
 
       substitute cmd/strelaysrv/etc/linux-systemd/strelaysrv.service \
diff --git a/pkgs/applications/networking/synology-drive-client/default.nix b/pkgs/applications/networking/synology-drive-client/default.nix
index 0c2f6c1d5ae7..fb930edd1447 100644
--- a/pkgs/applications/networking/synology-drive-client/default.nix
+++ b/pkgs/applications/networking/synology-drive-client/default.nix
@@ -78,4 +78,4 @@ let
       cp -R 'Synology Drive Client.app' $out/Applications/
     '';
   };
-in if stdenv.isDarwin then darwin else linux
+in if stdenv.hostPlatform.isDarwin then darwin else linux
diff --git a/pkgs/applications/networking/umurmur/default.nix b/pkgs/applications/networking/umurmur/default.nix
index 5af5c568e463..5f87a7395462 100644
--- a/pkgs/applications/networking/umurmur/default.nix
+++ b/pkgs/applications/networking/umurmur/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/umurmur/umurmur";
     platforms = platforms.all;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
     mainProgram = "umurmurd";
   };
 }
diff --git a/pkgs/applications/networking/warp/default.nix b/pkgs/applications/networking/warp/default.nix
index d7f64031c969..c41cc99df4b4 100644
--- a/pkgs/applications/networking/warp/default.nix
+++ b/pkgs/applications/networking/warp/default.nix
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
     gstreamer
     gst-plugins-base
     gst-plugins-bad
-  ]) ++ lib.optionals stdenv.isDarwin [
+  ]) ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     Foundation
   ];
@@ -88,6 +88,6 @@ stdenv.mkDerivation rec {
     maintainers = with lib.maintainers; [ dotlambda foo-dogsquared ];
     platforms = lib.platforms.all;
     mainProgram = "warp";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/networking/yaup/default.nix b/pkgs/applications/networking/yaup/default.nix
index 238bedd52be0..d2fa2778fc87 100644
--- a/pkgs/applications/networking/yaup/default.nix
+++ b/pkgs/applications/networking/yaup/default.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation {
     maintainers = with maintainers; [ fgaz ];
     platforms = platforms.all;
     # ld: unknown option: --export-dynamic
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "yaup";
   };
 }
diff --git a/pkgs/applications/office/PageEdit/default.nix b/pkgs/applications/office/PageEdit/default.nix
index 5f47ca9bbe68..fa7acd9310ba 100644
--- a/pkgs/applications/office/PageEdit/default.nix
+++ b/pkgs/applications/office/PageEdit/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = [ "-DINSTALL_BUNDLED_DICTS=0" ];
 
   installPhase =
-    if stdenv.isDarwin then ''
+    if stdenv.hostPlatform.isDarwin then ''
       runHook preInstall
 
       mkdir -p $out/Applications
diff --git a/pkgs/applications/office/appflowy/default.nix b/pkgs/applications/office/appflowy/default.nix
index a7a979ed82d3..f3a7ea76c533 100644
--- a/pkgs/applications/office/appflowy/default.nix
+++ b/pkgs/applications/office/appflowy/default.nix
@@ -40,7 +40,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
   nativeBuildInputs = [
     makeWrapper
     copyDesktopItems
-  ] ++ lib.optionals stdenvNoCC.isLinux [ autoPatchelfHook ];
+  ] ++ lib.optionals stdenvNoCC.hostPlatform.isLinux [ autoPatchelfHook ];
 
   buildInputs = [
     gtk3
@@ -52,7 +52,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
   dontConfigure = true;
 
   installPhase =
-    lib.optionalString stdenvNoCC.isLinux ''
+    lib.optionalString stdenvNoCC.hostPlatform.isLinux ''
       runHook preInstall
 
       cd AppFlowy/
@@ -67,7 +67,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
 
       runHook postInstall
     ''
-    + lib.optionalString stdenvNoCC.isDarwin ''
+    + lib.optionalString stdenvNoCC.hostPlatform.isDarwin ''
       runHook preInstall
 
       mkdir -p $out/{Applications,bin}
@@ -77,17 +77,17 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     '';
 
   preFixup =
-    lib.optionalString stdenvNoCC.isLinux ''
+    lib.optionalString stdenvNoCC.hostPlatform.isLinux ''
       # Add missing libraries to appflowy using the ones it comes with
       makeWrapper $out/opt/AppFlowy $out/bin/appflowy \
         --set LD_LIBRARY_PATH "$out/opt/lib/" \
         --prefix PATH : "${lib.makeBinPath [ xdg-user-dirs ]}"
     ''
-    + lib.optionalString stdenvNoCC.isDarwin ''
+    + lib.optionalString stdenvNoCC.hostPlatform.isDarwin ''
       makeWrapper $out/Applications/AppFlowy.app/Contents/MacOS/AppFlowy $out/bin/appflowy
     '';
 
-  desktopItems = lib.optionals stdenvNoCC.isLinux [
+  desktopItems = lib.optionals stdenvNoCC.hostPlatform.isLinux [
     (makeDesktopItem {
       name = "appflowy";
       desktopName = "AppFlowy";
diff --git a/pkgs/applications/office/beamerpresenter/default.nix b/pkgs/applications/office/beamerpresenter/default.nix
index 2749f3577c98..0d122cfbf3cd 100644
--- a/pkgs/applications/office/beamerpresenter/default.nix
+++ b/pkgs/applications/office/beamerpresenter/default.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
     qtsvg
     qtmultimedia
     qttools
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
   ] ++ lib.optionals useMupdf [
     freetype
diff --git a/pkgs/applications/office/espanso/default.nix b/pkgs/applications/office/espanso/default.nix
index c8883f36339e..5679c44ca2dc 100644
--- a/pkgs/applications/office/espanso/default.nix
+++ b/pkgs/applications/office/espanso/default.nix
@@ -30,14 +30,14 @@
 , WebKit
 , System
 , waylandSupport ? false
-, x11Support ? stdenv.isLinux
+, x11Support ? stdenv.hostPlatform.isLinux
 , testers
 , espanso
 }:
 # espanso does not support building with both X11 and Wayland support at the same time
-assert stdenv.isLinux -> x11Support != waylandSupport;
-assert stdenv.isDarwin -> !x11Support;
-assert stdenv.isDarwin -> !waylandSupport;
+assert stdenv.hostPlatform.isLinux -> x11Support != waylandSupport;
+assert stdenv.hostPlatform.isDarwin -> !x11Support;
+assert stdenv.hostPlatform.isDarwin -> !waylandSupport;
 rustPlatform.buildRustPackage rec {
   pname = "espanso";
   version = "2.2-unstable-2024-05-14";
@@ -69,20 +69,20 @@ rustPlatform.buildRustPackage rec {
     "modulo"
   ] ++ lib.optionals waylandSupport [
     "wayland"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "vendored-tls"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "native-tls"
   ];
 
   buildInputs = [
     wxGTK32
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     openssl
     dbus
     libnotify
     libxkbcommon
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Cocoa
     Foundation
@@ -104,7 +104,7 @@ rustPlatform.buildRustPackage rec {
     xdotool
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace scripts/create_bundle.sh \
       --replace-fail target/mac/ $out/Applications/ \
       --replace-fail /bin/echo ${coreutils}/bin/echo
@@ -119,12 +119,12 @@ rustPlatform.buildRustPackage rec {
   doCheck = false;
 
   postInstall =
-    if stdenv.isDarwin then ''
+    if stdenv.hostPlatform.isDarwin then ''
       EXEC_PATH=$out/bin/espanso BUILD_ARCH=current ${stdenv.shell} ./scripts/create_bundle.sh
     '' else ''
       wrapProgram $out/bin/espanso \
         --prefix PATH : ${lib.makeBinPath (
-          lib.optionals stdenv.isLinux [
+          lib.optionals stdenv.hostPlatform.isLinux [
             libnotify
             setxkbmap
           ] ++ lib.optionals waylandSupport [
diff --git a/pkgs/applications/office/jameica/default.nix b/pkgs/applications/office/jameica/default.nix
index f87eaf6d9e4d..32cbcf088c51 100644
--- a/pkgs/applications/office/jameica/default.nix
+++ b/pkgs/applications/office/jameica/default.nix
@@ -48,8 +48,8 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ ant jdk wrapGAppsHook3 makeWrapper stripJavaArchivesHook ];
-  buildInputs = lib.optionals stdenv.isLinux [ gtk2 glib libXtst ]
-    ++ lib.optional stdenv.isDarwin Cocoa;
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ gtk2 glib libXtst ]
+    ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 
   dontWrapGApps = true;
 
@@ -82,7 +82,7 @@ stdenv.mkDerivation rec {
   postFixup = ''
     makeWrapper ${jre}/bin/java $out/bin/jameica \
       --add-flags "-cp $out/share/java/jameica.jar:$out/share/jameica-${version}/* ${
-        lib.optionalString stdenv.isDarwin ''-Xdock:name="Jameica" -XstartOnFirstThread''
+        lib.optionalString stdenv.hostPlatform.isDarwin ''-Xdock:name="Jameica" -XstartOnFirstThread''
       } de.willuhn.jameica.Main" \
       --prefix LD_LIBRARY_PATH : ${lib.escapeShellArg (lib.makeLibraryPath buildInputs)} \
       --chdir "$out/share/java/" \
diff --git a/pkgs/applications/office/kitsas/default.nix b/pkgs/applications/office/kitsas/default.nix
index f8f32ecec6ed..9821cdd2f2f8 100644
--- a/pkgs/applications/office/kitsas/default.nix
+++ b/pkgs/applications/office/kitsas/default.nix
@@ -28,10 +28,10 @@ stdenv.mkDerivation rec {
 
   qmakeFlags = [ "../kitsas/kitsas.pro" ];
 
-  installPhase = lib.optionalString stdenv.isDarwin ''
+  installPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv kitsas.app $out/Applications
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     install -Dm755 kitsas -t $out/bin
     install -Dm644 ../kitsas.svg -t $out/share/icons/hicolor/scalable/apps
     install -Dm644 ../kitsas.png -t $out/share/icons/hicolor/256x256/apps
diff --git a/pkgs/applications/office/libreoffice/wrapper.nix b/pkgs/applications/office/libreoffice/wrapper.nix
index d2e62f8e5c74..aeab3da08dd7 100644
--- a/pkgs/applications/office/libreoffice/wrapper.nix
+++ b/pkgs/applications/office/libreoffice/wrapper.nix
@@ -16,7 +16,7 @@
 , gnugrep
 # Configuration options for the wrapper
 , extraMakeWrapperArgs ? []
-, dbusVerify ? stdenv.isLinux
+, dbusVerify ? stdenv.hostPlatform.isLinux
 , dbus
 }:
 
diff --git a/pkgs/applications/office/micropad/default.nix b/pkgs/applications/office/micropad/default.nix
index 46c318ffbd11..8fd6b2dd5228 100644
--- a/pkgs/applications/office/micropad/default.nix
+++ b/pkgs/applications/office/micropad/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   nativeBuildInputs = [ yarnBuildHook copyDesktopItems makeWrapper ]
-    ++ lib.optionals stdenv.isDarwin [ desktopToDarwinBundle ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ desktopToDarwinBundle ];
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/applications/office/mmex/default.nix b/pkgs/applications/office/mmex/default.nix
index 14f3c4098102..b88f70225873 100644
--- a/pkgs/applications/office/mmex/default.nix
+++ b/pkgs/applications/office/mmex/default.nix
@@ -27,10 +27,10 @@ stdenv.mkDerivation rec {
     hash = "sha256-TQgJ2Q4Z7+OtwuwkfPBgm2BmMKML9nmyFLSkmKJ1RE4=";
   };
 
-  postPatch = lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) ''
+  postPatch = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) ''
     substituteInPlace src/platfdep_mac.mm \
       --replace "appearance.name == NSAppearanceNameDarkAqua" "NO"
-  '' + lib.optionalString (stdenv.isLinux && !stdenv.isx86_64) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isx86_64) ''
     substituteInPlace 3rd/CMakeLists.txt \
       --replace "-msse4.2 -maes" ""
   '';
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
     makeWrapper
     pkg-config
     wrapGAppsHook3
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     lsb-release
   ];
 
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
     sqlite
     wxGTK32
     gtk3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.libobjc
   ];
 
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
     "-Wno-unused-parameter"
   ]);
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications,bin}
     mv $out/mmex.app $out/Applications
     makeWrapper $out/{Applications/mmex.app/Contents/MacOS,bin}/mmex
diff --git a/pkgs/applications/office/paperless-ngx/default.nix b/pkgs/applications/office/paperless-ngx/default.nix
index 9e8f2e6f6a34..3dc090921941 100644
--- a/pkgs/applications/office/paperless-ngx/default.nix
+++ b/pkgs/applications/office/paperless-ngx/default.nix
@@ -81,13 +81,13 @@ let
     nativeBuildInputs = [
       pkg-config
       python3
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       xcbuild
     ];
 
     buildInputs = [
       pango
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       giflib
       darwin.apple_sdk.frameworks.CoreText
     ];
@@ -254,7 +254,7 @@ python.pkgs.buildPythonApplication rec {
     "test_rtl_language_detection"
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   passthru = {
     inherit python path frontend tesseract5;
diff --git a/pkgs/applications/office/pympress/default.nix b/pkgs/applications/office/pympress/default.nix
index 8ada870912eb..f370ecec9ddf 100644
--- a/pkgs/applications/office/pympress/default.nix
+++ b/pkgs/applications/office/pympress/default.nix
@@ -7,9 +7,9 @@
 , gobject-introspection
 , libcanberra-gtk3
 , poppler_gi
-, withGstreamer ? stdenv.isLinux
+, withGstreamer ? stdenv.hostPlatform.isLinux
 , gst_all_1
-, withVLC ? stdenv.isLinux
+, withVLC ? stdenv.hostPlatform.isLinux
 }:
 
 python3Packages.buildPythonApplication rec {
diff --git a/pkgs/applications/office/qnotero/default.nix b/pkgs/applications/office/qnotero/default.nix
index c091f61dffc6..4fd2e741adb0 100644
--- a/pkgs/applications/office/qnotero/default.nix
+++ b/pkgs/applications/office/qnotero/default.nix
@@ -47,7 +47,7 @@ python3Packages.buildPythonPackage rec {
     homepage = "https://www.cogsci.nl/software/qnotero";
     license = lib.licenses.gpl2;
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin; # Build fails even after adding cx-freeze to `buildInputs`
+    broken = stdenv.hostPlatform.isDarwin; # Build fails even after adding cx-freeze to `buildInputs`
     maintainers = [ lib.maintainers.nico202 ];
   };
 }
diff --git a/pkgs/applications/office/qownnotes/default.nix b/pkgs/applications/office/qownnotes/default.nix
index 2b8d0d089269..71b574ee38e5 100644
--- a/pkgs/applications/office/qownnotes/default.nix
+++ b/pkgs/applications/office/qownnotes/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation {
     pkg-config
     installShellFiles
     xvfb-run
-  ] ++ lib.optionals stdenv.isDarwin [ makeWrapper ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ makeWrapper ];
 
   buildInputs = [
     qtbase
@@ -45,7 +45,7 @@ stdenv.mkDerivation {
     qtsvg
     qtwebsockets
     botan2
-  ] ++ lib.optionals stdenv.isLinux [ qtwayland ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ qtwayland ];
 
   cmakeFlags = [
     "-DQON_QT6_BUILD=ON"
@@ -61,11 +61,11 @@ stdenv.mkDerivation {
       --fish <(xvfb-run $out/bin/${appname} --completion fish)
   ''
   # Create a lowercase symlink for Linux
-  + lib.optionalString stdenv.isLinux ''
+  + lib.optionalString stdenv.hostPlatform.isLinux ''
     ln -s $out/bin/${appname} $out/bin/${pname}
   ''
   # Wrap application for macOS as lowercase binary
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv $out/bin/${appname}.app $out/Applications
     makeWrapper $out/Applications/${appname}.app/Contents/MacOS/${appname} $out/bin/${pname}
diff --git a/pkgs/applications/office/roam-research/default.nix b/pkgs/applications/office/roam-research/default.nix
index 408f026bc57a..3edbbe1a5081 100644
--- a/pkgs/applications/office/roam-research/default.nix
+++ b/pkgs/applications/office/roam-research/default.nix
@@ -2,7 +2,7 @@
 let
   extraArgs = removeAttrs args [ "callPackage" ];
 in
-if stdenv.isDarwin then
+if stdenv.hostPlatform.isDarwin then
   callPackage ./darwin.nix (extraArgs // { })
 else
   callPackage ./linux.nix (extraArgs // { })
diff --git a/pkgs/applications/office/scribus/default.nix b/pkgs/applications/office/scribus/default.nix
index 85c0afe9db66..f95ac14c67ab 100644
--- a/pkgs/applications/office/scribus/default.nix
+++ b/pkgs/applications/office/scribus/default.nix
@@ -83,6 +83,6 @@ stdenv.mkDerivation (finalAttrs: {
       mit
       publicDomain
     ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/applications/office/treesheets/default.nix b/pkgs/applications/office/treesheets/default.nix
index b52dc1dc835f..a696ab541280 100644
--- a/pkgs/applications/office/treesheets/default.nix
+++ b/pkgs/applications/office/treesheets/default.nix
@@ -30,13 +30,13 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     wxGTK
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ];
 
   env.NIX_CFLAGS_COMPILE = "-DPACKAGE_VERSION=\"${builtins.replaceStrings [ "unstable-" ] [ "" ] version}\"";
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     shopt -s extglob
     mkdir -p $out/{share/treesheets,bin}
     mv $out/!(share) $out/share/treesheets
diff --git a/pkgs/applications/office/trilium/desktop.nix b/pkgs/applications/office/trilium/desktop.nix
index 9681c5fc9b8a..13a291f45804 100644
--- a/pkgs/applications/office/trilium/desktop.nix
+++ b/pkgs/applications/office/trilium/desktop.nix
@@ -96,4 +96,4 @@ let
   };
 
 in
-  if stdenv.isDarwin then darwin else linux
+  if stdenv.hostPlatform.isDarwin then darwin else linux
diff --git a/pkgs/applications/office/wordgrinder/default.nix b/pkgs/applications/office/wordgrinder/default.nix
index 3647d8ea8e22..c3b2aaf42a07 100644
--- a/pkgs/applications/office/wordgrinder/default.nix
+++ b/pkgs/applications/office/wordgrinder/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     "OBJDIR=$TMP/wg-build"
   ];
 
-  preBuild = lib.optionalString stdenv.isLinux ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isLinux ''
     makeFlagsArray+=('XFT_PACKAGE=--cflags={} --libs={-lX11 -lXft}')
   '';
 
@@ -38,17 +38,17 @@ stdenv.mkDerivation rec {
     ncurses
     readline
     zlib
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libXft
   ];
 
   # To be able to find <Xft.h>
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isLinux "-I${libXft.dev}/include/X11";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isLinux "-I${libXft.dev}/include/X11";
 
   # Binaries look for LuaFileSystem library (lfs.so) at runtime
   postInstall = ''
     wrapProgram $out/bin/wordgrinder --set LUA_CPATH "${lua52Packages.luafilesystem}/lib/lua/5.2/lfs.so";
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/xwordgrinder --set LUA_CPATH "${lua52Packages.luafilesystem}/lib/lua/5.2/lfs.so";
   '';
 
diff --git a/pkgs/applications/office/zim/default.nix b/pkgs/applications/office/zim/default.nix
index 0f4017dbbc07..77eaaa16b992 100644
--- a/pkgs/applications/office/zim/default.nix
+++ b/pkgs/applications/office/zim/default.nix
@@ -55,6 +55,6 @@ python3Packages.buildPythonApplication rec {
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ pSub ];
     mainProgram = "zim";
-    broken = stdenv.isDarwin; # https://github.com/NixOS/nixpkgs/pull/52658#issuecomment-449565790
+    broken = stdenv.hostPlatform.isDarwin; # https://github.com/NixOS/nixpkgs/pull/52658#issuecomment-449565790
   };
 }
diff --git a/pkgs/applications/printing/pappl/default.nix b/pkgs/applications/printing/pappl/default.nix
index 02c4e74eb855..abeb83c9271c 100644
--- a/pkgs/applications/printing/pappl/default.nix
+++ b/pkgs/applications/printing/pappl/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     libpng
     libusb1
     zlib
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     # upstream mentions these are not needed for Mac
     # see: https://github.com/michaelrsweet/pappl#requirements
     avahi
diff --git a/pkgs/applications/radio/airspy/default.nix b/pkgs/applications/radio/airspy/default.nix
index 6cb0f40f129a..3c1fa511aef7 100644
--- a/pkgs/applications/radio/airspy/default.nix
+++ b/pkgs/applications/radio/airspy/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libusb1 ];
 
   cmakeFlags =
-    lib.optionals stdenv.isLinux [ "-DINSTALL_UDEV_RULES=ON" ];
+    lib.optionals stdenv.hostPlatform.isLinux [ "-DINSTALL_UDEV_RULES=ON" ];
 
   meta = with lib; {
     homepage = "https://github.com/airspy/airspyone_host";
diff --git a/pkgs/applications/radio/csdr/default.nix b/pkgs/applications/radio/csdr/default.nix
index af05cb61e836..65bbdbb05dac 100644
--- a/pkgs/applications/radio/csdr/default.nix
+++ b/pkgs/applications/radio/csdr/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     libsamplerate
   ];
 
-  hardeningDisable = lib.optional stdenv.isAarch64 "format";
+  hardeningDisable = lib.optional stdenv.hostPlatform.isAarch64 "format";
 
   postFixup = ''
     substituteInPlace "$out"/lib/pkgconfig/csdr.pc \
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     description = "Simple DSP library and command-line tool for Software Defined Radio";
     license = licenses.gpl3Only;
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = teams.c3d2.members;
   };
 }
diff --git a/pkgs/applications/radio/cubicsdr/default.nix b/pkgs/applications/radio/cubicsdr/default.nix
index 839fc9ceaaa1..2677795dc0ed 100644
--- a/pkgs/applications/radio/cubicsdr/default.nix
+++ b/pkgs/applications/radio/cubicsdr/default.nix
@@ -24,8 +24,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config ];
 
   buildInputs = [ fftw hamlib liquid-dsp soapysdr-with-plugins wxGTK32 ]
-    ++ lib.optionals stdenv.isLinux [ libpulseaudio libGL libX11 ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa WebKit ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libpulseaudio libGL libX11 ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa WebKit ];
 
   cmakeFlags = [ "-DUSE_HAMLIB=ON" ]
     ++ lib.optional enableDigitalLab "-DENABLE_DIGITAL_LAB=ON";
diff --git a/pkgs/applications/radio/direwolf/default.nix b/pkgs/applications/radio/direwolf/default.nix
index e55f895d24af..6cd591fcbda6 100644
--- a/pkgs/applications/radio/direwolf/default.nix
+++ b/pkgs/applications/radio/direwolf/default.nix
@@ -30,8 +30,8 @@ stdenv.mkDerivation rec {
 
   strictDeps = true;
 
-  buildInputs = lib.optionals stdenv.isLinux [ alsa-lib udev ]
-    ++ lib.optionals stdenv.isDarwin [ portaudio ]
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib udev ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ portaudio ]
     ++ lib.optionals gpsdSupport [ gpsd ]
     ++ lib.optionals hamlibSupport [ hamlib ]
     ++ lib.optionals extraScripts [ python3 perl espeak ];
diff --git a/pkgs/applications/radio/dump1090/default.nix b/pkgs/applications/radio/dump1090/default.nix
index 39c7f832e09f..c34e18be8696 100644
--- a/pkgs/applications/radio/dump1090/default.nix
+++ b/pkgs/applications/radio/dump1090/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
     ncurses
     rtl-sdr
     soapysdr-with-plugins
-  ] ++ lib.optional stdenv.isLinux limesuite;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux limesuite;
 
   env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang
     "-Wno-implicit-function-declaration -Wno-int-conversion -Wno-unknown-warning-option";
diff --git a/pkgs/applications/radio/fldigi/default.nix b/pkgs/applications/radio/fldigi/default.nix
index 2390a4f8c081..0a7edb7aed6a 100644
--- a/pkgs/applications/radio/fldigi/default.nix
+++ b/pkgs/applications/radio/fldigi/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
     portaudio
     libsndfile
     libsamplerate
-  ] ++ lib.optionals (stdenv.isLinux) [ libpulseaudio alsa-lib udev ];
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux) [ libpulseaudio alsa-lib udev ];
 
   env.CXXFLAGS = lib.optionalString stdenv.cc.isClang "-std=c++14";
 
diff --git a/pkgs/applications/radio/flex-ndax/default.nix b/pkgs/applications/radio/flex-ndax/default.nix
index ff2aedf6005e..e45604856a59 100644
--- a/pkgs/applications/radio/flex-ndax/default.nix
+++ b/pkgs/applications/radio/flex-ndax/default.nix
@@ -16,7 +16,7 @@ buildGoModule rec {
   vendorHash = "sha256-05LWJm4MoJqjJaFrBZvutKlqSTGl4dSp433AfHHO6LU=";
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/kc2g-flex-tools/nDAX";
     description = "FlexRadio digital audio transport (DAX) connector for PulseAudio";
     license = licenses.mit;
diff --git a/pkgs/applications/radio/freedv/default.nix b/pkgs/applications/radio/freedv/default.nix
index 27da63dd4022..d53f67031600 100644
--- a/pkgs/applications/radio/freedv/default.nix
+++ b/pkgs/applications/radio/freedv/default.nix
@@ -16,7 +16,7 @@
 , hamlib_4
 , wxGTK32
 , sioclient
-, pulseSupport ? config.pulseaudio or stdenv.isLinux
+, pulseSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux
 , AppKit
 , AVFoundation
 , Cocoa
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-oFuAH81mduiSQGIDgDDy1IPskqqCBmfWbpqQstUIw9g=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace CMakeLists.txt \
       --replace-fail "-Wl,-ld_classic" ""
     substituteInPlace src/CMakeLists.txt \
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     cmake
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     macdylibbundler
     makeWrapper
     darwin.autoSignDarwinBinariesHook
@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
     wxGTK32
     sioclient
   ] ++ (if pulseSupport then [ libpulseaudio ] else [ portaudio ])
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     AVFoundation
     Cocoa
@@ -74,13 +74,13 @@ stdenv.mkDerivation rec {
     "-DUSE_PULSEAUDIO:BOOL=${if pulseSupport then "TRUE" else "FALSE"}"
   ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     "-DAPPLE_OLD_XCODE"
   ]);
 
   doCheck = true;
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv $out/bin/FreeDV.app $out/Applications
     makeWrapper $out/Applications/FreeDV.app/Contents/MacOS/FreeDV $out/bin/freedv
diff --git a/pkgs/applications/radio/gnuradio/3.8.nix b/pkgs/applications/radio/gnuradio/3.8.nix
index 67cc2d6c8ebf..b611ef66b825 100644
--- a/pkgs/applications/radio/gnuradio/3.8.nix
+++ b/pkgs/applications/radio/gnuradio/3.8.nix
@@ -150,8 +150,8 @@ let
     };
     gr-audio = {
       runtime = []
-        ++ lib.optionals stdenv.isLinux [ alsa-lib libjack2 ]
-        ++ lib.optionals stdenv.isDarwin [ CoreAudio ]
+        ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib libjack2 ]
+        ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreAudio ]
       ;
       cmakeEnableFlag = "GR_AUDIO";
     };
diff --git a/pkgs/applications/radio/gnuradio/default.nix b/pkgs/applications/radio/gnuradio/default.nix
index e7efa57428b8..f9113b0a23c3 100644
--- a/pkgs/applications/radio/gnuradio/default.nix
+++ b/pkgs/applications/radio/gnuradio/default.nix
@@ -170,8 +170,8 @@ let
     };
     gr-audio = {
       runtime = []
-        ++ lib.optionals stdenv.isLinux [ alsa-lib libjack2 ]
-        ++ lib.optionals stdenv.isDarwin [ CoreAudio ]
+        ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib libjack2 ]
+        ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreAudio ]
       ;
       cmakeEnableFlag = "GR_AUDIO";
     };
diff --git a/pkgs/applications/radio/gnuradio/shared.nix b/pkgs/applications/radio/gnuradio/shared.nix
index fe75f6037f37..75a2a97e0d22 100644
--- a/pkgs/applications/radio/gnuradio/shared.nix
+++ b/pkgs/applications/radio/gnuradio/shared.nix
@@ -88,7 +88,7 @@ in {
       remove-references-to -t ${stdenv.cc} $(readlink -f $out/lib/libgnuradio-runtime${stdenv.hostPlatform.extensions.sharedLibrary})
     ''
     # Clang references in InstalledDir
-    + lib.optionalString (hasFeature "gnuradio-runtime" && stdenv.isDarwin) ''
+    + lib.optionalString (hasFeature "gnuradio-runtime" && stdenv.hostPlatform.isDarwin) ''
       remove-references-to -t ${stdenv.cc.cc} $(readlink -f $out/lib/libgnuradio-runtime${stdenv.hostPlatform.extensions.sharedLibrary})
     ''
   ;
@@ -116,7 +116,7 @@ in {
   dontWrapQtApps = true;
   # On darwin, it requires playing with DYLD_FALLBACK_LIBRARY_PATH to make if
   # find libgnuradio-runtim.3.*.dylib .
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   preCheck = ''
     export HOME=$(mktemp -d)
     export QT_QPA_PLATFORM=offscreen
diff --git a/pkgs/applications/radio/gnuradio/wrapper.nix b/pkgs/applications/radio/gnuradio/wrapper.nix
index f468aadb27b5..4ffe42593ec5 100644
--- a/pkgs/applications/radio/gnuradio/wrapper.nix
+++ b/pkgs/applications/radio/gnuradio/wrapper.nix
@@ -127,7 +127,7 @@ let
             unwrapped.qt.qtbase.qtPluginPrefix
             (builtins.map lib.getBin ([
               unwrapped.qt.qtbase
-            ] ++ lib.optionals stdenv.isLinux [
+            ] ++ lib.optionals stdenv.hostPlatform.isLinux [
               unwrapped.qt.qtwayland
             ]))
           }"
@@ -137,7 +137,7 @@ let
             unwrapped.qt.qtbase.qtQmlPrefix
             (builtins.map lib.getBin ([
               unwrapped.qt.qtbase
-            ] ++ lib.optionals stdenv.isLinux [
+            ] ++ lib.optionals stdenv.hostPlatform.isLinux [
               unwrapped.qt.qtwayland
             ]))
           }"
diff --git a/pkgs/applications/radio/limesuite/default.nix b/pkgs/applications/radio/limesuite/default.nix
index d8d7bcd22d0a..9190896d8e11 100644
--- a/pkgs/applications/radio/limesuite/default.nix
+++ b/pkgs/applications/radio/limesuite/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     gnuplot
     libusb1
     soapysdr
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     GLUT
   ] ++ lib.optionals withGui [
     fltk
diff --git a/pkgs/applications/radio/m17-cxx-demod/default.nix b/pkgs/applications/radio/m17-cxx-demod/default.nix
index d6663fbc4287..47a7d103e76c 100644
--- a/pkgs/applications/radio/m17-cxx-demod/default.nix
+++ b/pkgs/applications/radio/m17-cxx-demod/default.nix
@@ -31,6 +31,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     maintainers = teams.c3d2.members;
     # never built on aarch64-darwin, x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/radio/multimon-ng/default.nix b/pkgs/applications/radio/multimon-ng/default.nix
index 70f3da3118c1..f71af7e64862 100644
--- a/pkgs/applications/radio/multimon-ng/default.nix
+++ b/pkgs/applications/radio/multimon-ng/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-irKpVerxzjJIiLofoTdySk/PzojuVLgMq2DYF0qPaAM=";
   };
 
-  buildInputs = lib.optionals stdenv.isLinux [ libpulseaudio libX11 ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libpulseaudio libX11 ];
 
   nativeBuildInputs = [ cmake makeWrapper ];
 
diff --git a/pkgs/applications/radio/pat/default.nix b/pkgs/applications/radio/pat/default.nix
index 267be192f44f..1f1140e5fd4b 100644
--- a/pkgs/applications/radio/pat/default.nix
+++ b/pkgs/applications/radio/pat/default.nix
@@ -25,11 +25,11 @@ buildGoModule rec {
     installShellFiles
   ];
 
-  buildInputs = lib.optional stdenv.isLinux [ libax25 ];
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux [ libax25 ];
 
   # Needed by wl2k-go go module for libax25 to include support for Linux' AX.25 stack by linking against libax25.
   # ref: https://github.com/la5nta/wl2k-go/blob/abe3ae5bf6a2eec670a21672d461d1c3e1d4c2f3/transport/ax25/ax25.go#L11-L17
-  tags = lib.optionals stdenv.isLinux [ "libax25" ];
+  tags = lib.optionals stdenv.hostPlatform.isLinux [ "libax25" ];
 
   postInstall = ''
     installManPage man/pat-configure.1 man/pat.1
diff --git a/pkgs/applications/radio/qdmr/default.nix b/pkgs/applications/radio/qdmr/default.nix
index 2ebc0d30ff6c..442828a76302 100644
--- a/pkgs/applications/radio/qdmr/default.nix
+++ b/pkgs/applications/radio/qdmr/default.nix
@@ -16,7 +16,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/applications/radio/qlog/default.nix b/pkgs/applications/radio/qlog/default.nix
index 86da4b081ee4..dacdfcbb2704 100644
--- a/pkgs/applications/radio/qlog/default.nix
+++ b/pkgs/applications/radio/qlog/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     qtwebchannel
     hamlib
     qtkeychain
-  ] ++ (lib.optionals stdenv.isDarwin [
+  ] ++ (lib.optionals stdenv.hostPlatform.isDarwin [
     cups
   ]);
 
diff --git a/pkgs/applications/radio/rtl-sdr/default.nix b/pkgs/applications/radio/rtl-sdr/default.nix
index f0bbba9b0a3b..6cb25feb980b 100644
--- a/pkgs/applications/radio/rtl-sdr/default.nix
+++ b/pkgs/applications/radio/rtl-sdr/default.nix
@@ -13,7 +13,7 @@ let
       nativeBuildInputs = [ pkg-config cmake ];
       propagatedBuildInputs = [ libusb1 ];
 
-      cmakeFlags = lib.optionals stdenv.isLinux [
+      cmakeFlags = lib.optionals stdenv.hostPlatform.isLinux [
         "-DINSTALL_UDEV_RULES=ON"
         "-DWITH_RPC=ON"
       ];
diff --git a/pkgs/applications/radio/sdrplay/default.nix b/pkgs/applications/radio/sdrplay/default.nix
index 9d9ee298e09c..d19ed4b02794 100644
--- a/pkgs/applications/radio/sdrplay/default.nix
+++ b/pkgs/applications/radio/sdrplay/default.nix
@@ -1,9 +1,9 @@
 { stdenv, lib, fetchurl, autoPatchelfHook, udev, libusb1 }:
 let
   arch =
-    if stdenv.isx86_64 then "x86_64"
-    else if stdenv.isi686 then "i686"
-    else if stdenv.isAarch64 then "aarch64"
+    if stdenv.hostPlatform.isx86_64 then "x86_64"
+    else if stdenv.hostPlatform.isi686 then "i686"
+    else if stdenv.hostPlatform.isAarch64 then "aarch64"
     else throw "unsupported architecture";
 
   version = "3.07.1";
diff --git a/pkgs/applications/radio/sdrpp/default.nix b/pkgs/applications/radio/sdrpp/default.nix
index 3ce8f1f7f4ff..151a967d943f 100644
--- a/pkgs/applications/radio/sdrpp/default.nix
+++ b/pkgs/applications/radio/sdrpp/default.nix
@@ -8,7 +8,7 @@
 , hackrf_source ? true, hackrf
 , limesdr_source ? true, limesuite
 , perseus_source ? false    # needs libperseus-sdr, not yet available in nixpks
-, plutosdr_source ? stdenv.isLinux, libiio, libad9361
+, plutosdr_source ? stdenv.hostPlatform.isLinux, libiio, libad9361
 , rfspace_source ? true
 , rtl_sdr_source ? true, rtl-sdr-osmocom, libusb1  # osmocom better w/ rtlsdr v4
 , rtl_tcp_source ? true
@@ -70,8 +70,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config ];
 
   buildInputs = [ glfw glew fftwFloat volk zstd ]
-    ++ lib.optional stdenv.isDarwin AppKit
-    ++ lib.optional stdenv.isLinux libX11
+    ++ lib.optional stdenv.hostPlatform.isDarwin AppKit
+    ++ lib.optional stdenv.hostPlatform.isLinux libX11
     ++ lib.optional airspy_source airspy
     ++ lib.optional airspyhf_source airspyhf
     ++ lib.optional bladerf_source libbladeRF
diff --git a/pkgs/applications/radio/soapyairspy/default.nix b/pkgs/applications/radio/soapyairspy/default.nix
index 289a20d281cc..9d198ad15eb3 100644
--- a/pkgs/applications/radio/soapyairspy/default.nix
+++ b/pkgs/applications/radio/soapyairspy/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ airspy soapysdr ]
-    ++ lib.optionals stdenv.isDarwin [ libobjc IOKit Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libobjc IOKit Security ];
 
   cmakeFlags = [ "-DSoapySDR_DIR=${soapysdr}/share/cmake/SoapySDR/" ];
 
diff --git a/pkgs/applications/radio/soapyaudio/default.nix b/pkgs/applications/radio/soapyaudio/default.nix
index 7434791b69f0..86921754d6b6 100644
--- a/pkgs/applications/radio/soapyaudio/default.nix
+++ b/pkgs/applications/radio/soapyaudio/default.nix
@@ -16,8 +16,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ hamlib rtaudio libjack2 libusb1 soapysdr ]
-    ++ lib.optionals stdenv.isLinux [ alsa-lib libpulseaudio ]
-    ++ lib.optionals stdenv.isDarwin [ Accelerate CoreAudio ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib libpulseaudio ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Accelerate CoreAudio ];
 
   cmakeFlags = [
     "-DSoapySDR_DIR=${soapysdr}/share/cmake/SoapySDR/"
diff --git a/pkgs/applications/radio/soapybladerf/default.nix b/pkgs/applications/radio/soapybladerf/default.nix
index 0f2b445b960e..15c46507350c 100644
--- a/pkgs/applications/radio/soapybladerf/default.nix
+++ b/pkgs/applications/radio/soapybladerf/default.nix
@@ -19,7 +19,7 @@ in stdenv.mkDerivation {
 
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ libbladeRF soapysdr ]
-    ++ lib.optionals stdenv.isDarwin [ libobjc IOKit Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libobjc IOKit Security ];
 
   cmakeFlags = [ "-DSoapySDR_DIR=${soapysdr}/share/cmake/SoapySDR/" ];
 
diff --git a/pkgs/applications/radio/soapyhackrf/default.nix b/pkgs/applications/radio/soapyhackrf/default.nix
index be621c0d3135..3f385a4b7255 100644
--- a/pkgs/applications/radio/soapyhackrf/default.nix
+++ b/pkgs/applications/radio/soapyhackrf/default.nix
@@ -19,7 +19,7 @@ in stdenv.mkDerivation {
 
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ hackrf soapysdr ]
-    ++ lib.optionals stdenv.isDarwin [ libobjc IOKit Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libobjc IOKit Security ];
 
   cmakeFlags = [ "-DSoapySDR_DIR=${soapysdr}/share/cmake/SoapySDR/" ];
 
diff --git a/pkgs/applications/radio/soapyremote/default.nix b/pkgs/applications/radio/soapyremote/default.nix
index c6e7cddd0903..4191b8ae95ce 100644
--- a/pkgs/applications/radio/soapyremote/default.nix
+++ b/pkgs/applications/radio/soapyremote/default.nix
@@ -19,7 +19,7 @@ in stdenv.mkDerivation {
 
   cmakeFlags = [ "-DSoapySDR_DIR=${soapysdr}/share/cmake/SoapySDR/" ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [ "-include sys/select.h" ]);
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [ "-include sys/select.h" ]);
 
   meta = with lib; {
     homepage = "https://github.com/pothosware/SoapyRemote";
diff --git a/pkgs/applications/radio/soapyrtlsdr/default.nix b/pkgs/applications/radio/soapyrtlsdr/default.nix
index 80ea41e4f950..f0a5194a4a9e 100644
--- a/pkgs/applications/radio/soapyrtlsdr/default.nix
+++ b/pkgs/applications/radio/soapyrtlsdr/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ rtl-sdr soapysdr ]
-    ++ lib.optionals stdenv.isDarwin [ libobjc IOKit Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libobjc IOKit Security ];
 
   cmakeFlags = [ "-DSoapySDR_DIR=${soapysdr}/share/cmake/SoapySDR/" ];
 
diff --git a/pkgs/applications/radio/soapyuhd/default.nix b/pkgs/applications/radio/soapyuhd/default.nix
index 9220df3f5f94..de7b7be855ec 100644
--- a/pkgs/applications/radio/soapyuhd/default.nix
+++ b/pkgs/applications/radio/soapyuhd/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ uhd boost soapysdr ]
-    ++ lib.optionals stdenv.isDarwin [ libobjc IOKit Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libobjc IOKit Security ];
 
   cmakeFlags = [ "-DSoapySDR_DIR=${soapysdr}/share/cmake/SoapySDR/" ];
 
diff --git a/pkgs/applications/radio/splat/default.nix b/pkgs/applications/radio/splat/default.nix
index 59d0fc1fdeb0..1bf4e738c713 100644
--- a/pkgs/applications/radio/splat/default.nix
+++ b/pkgs/applications/radio/splat/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description =
       "SPLAT! is an RF Signal Propagation, Loss, And Terrain analysis tool for the electromagnetic spectrum between 20 MHz and 20 GHz";
     license = licenses.gpl2Only;
diff --git a/pkgs/applications/radio/ubertooth/default.nix b/pkgs/applications/radio/ubertooth/default.nix
index 62e645fb6df8..2d8b9f857938 100644
--- a/pkgs/applications/radio/ubertooth/default.nix
+++ b/pkgs/applications/radio/ubertooth/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ libbtbb libpcap libusb1 bluez ];
 
-  cmakeFlags = lib.optionals stdenv.isLinux [
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isLinux [
     "-DINSTALL_UDEV_RULES=TRUE"
     "-DUDEV_RULES_PATH=etc/udev/rules.d"
     "-DUDEV_RULES_GROUP=${udevGroup}"
diff --git a/pkgs/applications/radio/uhd/default.nix b/pkgs/applications/radio/uhd/default.nix
index 947d7d48108d..ce668c45300f 100644
--- a/pkgs/applications/radio/uhd/default.nix
+++ b/pkgs/applications/radio/uhd/default.nix
@@ -139,7 +139,7 @@ stdenv.mkDerivation (finalAttrs: {
     # TODO: Check if this still needed
     # ABI differences GCC 7.1
     # /nix/store/wd6r25miqbk9ia53pp669gn4wrg9n9cj-gcc-7.3.0/include/c++/7.3.0/bits/vector.tcc:394:7: note: parameter passing for argument of type 'std::vector<uhd::range_t>::iterator {aka __gnu_cxx::__normal_iterator<uhd::range_t*, std::vector<uhd::range_t> >}' changed in GCC 7.1
-  ] ++ optionals stdenv.isAarch32 [
+  ] ++ optionals stdenv.hostPlatform.isAarch32 [
     "-DCMAKE_CXX_FLAGS=-Wno-psabi"
   ];
 
@@ -163,7 +163,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   # many tests fails on darwin, according to ofborg
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   # Build only the host software
   preConfigure = "cd host";
diff --git a/pkgs/applications/science/astronomy/gildas/default.nix b/pkgs/applications/science/astronomy/gildas/default.nix
index 3b31f069b0e4..eafc631ef92c 100644
--- a/pkgs/applications/science/astronomy/gildas/default.nix
+++ b/pkgs/applications/science/astronomy/gildas/default.nix
@@ -22,17 +22,17 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config groff perl getopt gfortran which ];
 
   buildInputs = [ gtk2-x11 lesstif cfitsio python3Env ncurses ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ CoreFoundation ]);
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ CoreFoundation ]);
 
   patches = [ ./wrapper.patch ]
-    ++ lib.optionals stdenv.isDarwin ([ ./clang.patch ./cpp-darwin.patch ]);
+    ++ lib.optionals stdenv.hostPlatform.isDarwin ([ ./clang.patch ./cpp-darwin.patch ]);
 
   env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-unused-command-line-argument";
 
   # Workaround for https://github.com/NixOS/nixpkgs/issues/304528
-  env.GAG_CPP = lib.optionalString stdenv.isDarwin "${gfortran.outPath}/bin/cpp";
+  env.GAG_CPP = lib.optionalString stdenv.hostPlatform.isDarwin "${gfortran.outPath}/bin/cpp";
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin (with darwin.apple_sdk.frameworks; "-F${CoreFoundation}/Library/Frameworks");
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; "-F${CoreFoundation}/Library/Frameworks");
 
   configurePhase=''
     substituteInPlace admin/wrapper.sh --replace '%%OUT%%' $out
diff --git a/pkgs/applications/science/astronomy/gravit/default.nix b/pkgs/applications/science/astronomy/gravit/default.nix
index 070ce96fd577..b734ea9750dc 100644
--- a/pkgs/applications/science/astronomy/gravit/default.nix
+++ b/pkgs/applications/science/astronomy/gravit/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     homepage = "https://github.com/gak/gravit";
     description = "Beautiful OpenGL-based gravity simulator";
     mainProgram = "gravit";
diff --git a/pkgs/applications/science/astronomy/stellarium/default.nix b/pkgs/applications/science/astronomy/stellarium/default.nix
index 87118beec99f..7ddaf5357e7c 100644
--- a/pkgs/applications/science/astronomy/stellarium/default.nix
+++ b/pkgs/applications/science/astronomy/stellarium/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation (finalAttrs: {
     })
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace CMakeLists.txt \
       --replace 'SET(CMAKE_INSTALL_PREFIX "''${PROJECT_BINARY_DIR}/Stellarium.app/Contents")' \
                 'SET(CMAKE_INSTALL_PREFIX "${placeholder "out"}/Applications/Stellarium.app/Contents")'
@@ -72,22 +72,22 @@ stdenv.mkDerivation (finalAttrs: {
     libnova
     exiv2
     nlopt
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
   ];
 
   preConfigure = ''
     export SOURCE_DATE_EPOCH=$(date -d 20${lib.versions.major finalAttrs.version}0101 +%s)
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     export LC_ALL=en_US.UTF-8
   '';
 
   # fatal error: 'QtSerialPort/QSerialPortInfo' file not found
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-F${qtserialport}/lib";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-F${qtserialport}/lib";
 
   dontWrapGApps = true;
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     makeWrapper $out/Applications/Stellarium.app/Contents/MacOS/Stellarium $out/bin/stellarium
   '';
 
diff --git a/pkgs/applications/science/biology/ants/default.nix b/pkgs/applications/science/biology/ants/default.nix
index 21dbf69407f2..b42eb791d27f 100644
--- a/pkgs/applications/science/biology/ants/default.nix
+++ b/pkgs/applications/science/biology/ants/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     itk
     vtk
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ];
 
diff --git a/pkgs/applications/science/biology/blast/bin.nix b/pkgs/applications/science/biology/blast/bin.nix
index 48537a568e4b..1e3975f9f5ff 100644
--- a/pkgs/applications/science/biology/blast/bin.nix
+++ b/pkgs/applications/science/biology/blast/bin.nix
@@ -35,9 +35,9 @@ in
 stdenv.mkDerivation {
   inherit pname version src;
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
-  buildInputs = [ python3 perl ] ++ lib.optionals stdenv.isLinux [ zlib bzip2 glib libxml2 ];
+  buildInputs = [ python3 perl ] ++ lib.optionals stdenv.hostPlatform.isLinux [ zlib bzip2 glib libxml2 ];
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/applications/science/biology/blast/default.nix b/pkgs/applications/science/biology/blast/default.nix
index 407d38970b0f..791d6049ad6d 100644
--- a/pkgs/applications/science/biology/blast/default.nix
+++ b/pkgs/applications/science/biology/blast/default.nix
@@ -81,7 +81,7 @@ stdenv.mkDerivation rec {
   # perl is necessary in buildInputs so that installed perl scripts get patched
   # correctly
   buildInputs = [ coreutils perl gawk zlib bzip2 cpio ]
-    ++ lib.optionals stdenv.isDarwin [ ApplicationServices ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ ApplicationServices ];
   hardeningDisable = [ "format" ];
 
   postInstall = ''
diff --git a/pkgs/applications/science/biology/bwa-mem2/default.nix b/pkgs/applications/science/biology/bwa-mem2/default.nix
index c339baf446d2..0a2d2c8d2052 100644
--- a/pkgs/applications/science/biology/bwa-mem2/default.nix
+++ b/pkgs/applications/science/biology/bwa-mem2/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [ zlib ];
 
   # see https://github.com/bwa-mem2/bwa-mem2/issues/93
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i 's/memset_s/memset8_s/g' ext/safestringlib/include/safe_mem_lib.h
     sed -i 's/memset_s/memset8_s/g' ext/safestringlib/safeclib/memset16_s.c
     sed -i 's/memset_s/memset8_s/g' ext/safestringlib/safeclib/memset32_s.c
diff --git a/pkgs/applications/science/biology/cmtk/default.nix b/pkgs/applications/science/biology/cmtk/default.nix
index d7d23dd2d46e..1263f8194c9f 100644
--- a/pkgs/applications/science/biology/cmtk/default.nix
+++ b/pkgs/applications/science/biology/cmtk/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
   env.NIX_CFLAGS_COMPILE = toString [
     (lib.optionalString stdenv.cc.isGNU "-std=c++11")
     (lib.optionalString stdenv.cc.isClang "-Wno-error=c++11-narrowing")
-    (lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dfinite=isfinite")
+    (lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) "-Dfinite=isfinite")
   ];
 
   meta = with lib; {
diff --git a/pkgs/applications/science/biology/delly/default.nix b/pkgs/applications/science/biology/delly/default.nix
index 34ea942b4f5c..ec1f8612cc34 100644
--- a/pkgs/applications/science/biology/delly/default.nix
+++ b/pkgs/applications/science/biology/delly/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation (finalAttrs: {
     htslib
     xz
     zlib
-  ] ++ lib.optional stdenv.isDarwin llvmPackages.openmp;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp;
 
   makeFlags = [
     "EBROOTHTSLIB=${htslib}"
diff --git a/pkgs/applications/science/biology/iqtree/default.nix b/pkgs/applications/science/biology/iqtree/default.nix
index a3ac4eb542f0..ce6218449a7e 100644
--- a/pkgs/applications/science/biology/iqtree/default.nix
+++ b/pkgs/applications/science/biology/iqtree/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
     boost
     eigen
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     llvmPackages.openmp
   ];
 
diff --git a/pkgs/applications/science/biology/iv/default.nix b/pkgs/applications/science/biology/iv/default.nix
index ba1b91298bb3..a4b408b14a01 100644
--- a/pkgs/applications/science/biology/iv/default.nix
+++ b/pkgs/applications/science/biology/iv/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
         break
       fi
     done
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --add-needed ${libX11}/lib/libX11.so $out/lib/libIVhines.so
   '';
 
diff --git a/pkgs/applications/science/biology/migrate/default.nix b/pkgs/applications/science/biology/migrate/default.nix
index 53fc80777612..aceb010875d7 100644
--- a/pkgs/applications/science/biology/migrate/default.nix
+++ b/pkgs/applications/science/biology/migrate/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Estimates population size, migration, population splitting parameters using genetic/genomic data";
     homepage = "https://peterbeerli.com/migrate-html5/index.html";
     license = licenses.mit;
diff --git a/pkgs/applications/science/biology/minimap2/default.nix b/pkgs/applications/science/biology/minimap2/default.nix
index 5597b5504678..1c523a909241 100644
--- a/pkgs/applications/science/biology/minimap2/default.nix
+++ b/pkgs/applications/science/biology/minimap2/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ zlib ];
 
-  makeFlags = lib.optionals stdenv.isAarch64 [ "arm_neon=1" "aarch64=1" ];
+  makeFlags = lib.optionals stdenv.hostPlatform.isAarch64 [ "arm_neon=1" "aarch64=1" ];
 
   installPhase = ''
     mkdir -p $out/bin
diff --git a/pkgs/applications/science/biology/mrtrix/default.nix b/pkgs/applications/science/biology/mrtrix/default.nix
index 64eafa0f6968..e17aa3ca038c 100644
--- a/pkgs/applications/science/biology/mrtrix/default.nix
+++ b/pkgs/applications/science/biology/mrtrix/default.nix
@@ -102,7 +102,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     homepage = "https://github.com/MRtrix3/mrtrix3";
     description = "Suite of tools for diffusion imaging";
     maintainers = with maintainers; [ bcdarwin ];
diff --git a/pkgs/applications/science/biology/muscle/default.nix b/pkgs/applications/science/biology/muscle/default.nix
index 86067538b13c..33a56d6e26d6 100644
--- a/pkgs/applications/science/biology/muscle/default.nix
+++ b/pkgs/applications/science/biology/muscle/default.nix
@@ -20,7 +20,7 @@ gccStdenv.mkDerivation rec {
   installPhase =
     let
       target =
-        if gccStdenv.isDarwin
+        if gccStdenv.hostPlatform.isDarwin
         then "Darwin"
         else "Linux";
     in
diff --git a/pkgs/applications/science/biology/nest/default.nix b/pkgs/applications/science/biology/nest/default.nix
index 96418346eeb9..9714f015f71a 100644
--- a/pkgs/applications/science/biology/nest/default.nix
+++ b/pkgs/applications/science/biology/nest/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
     python3
     python3.pkgs.cython
   ] ++ lib.optional withMpi mpi
-    ++ lib.optional stdenv.isDarwin llvmPackages.openmp;
+    ++ lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp;
 
   propagatedBuildInputs = with python3.pkgs; [
     numpy
diff --git a/pkgs/applications/science/biology/neuron/default.nix b/pkgs/applications/science/biology/neuron/default.nix
index e54d3c9ba7a1..fe5de3c68fab 100644
--- a/pkgs/applications/science/biology/neuron/default.nix
+++ b/pkgs/applications/science/biology/neuron/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
     flex
     git
   ] ++ optionals useCore [ perl gsl ]
-  ++ optionals stdenv.isDarwin [ xcbuild ];
+  ++ optionals stdenv.hostPlatform.isDarwin [ xcbuild ];
 
   buildInputs = optionals useIv [
     xorg.libX11.dev
diff --git a/pkgs/applications/science/biology/obitools/obitools3.nix b/pkgs/applications/science/biology/obitools/obitools3.nix
index f415c9c39141..53aa177307df 100644
--- a/pkgs/applications/science/biology/obitools/obitools3.nix
+++ b/pkgs/applications/science/biology/obitools/obitools3.nix
@@ -11,7 +11,7 @@ python3Packages.buildPythonApplication rec {
 
   nativeBuildInputs = [ python3Packages.cython cmake ];
 
-  postPatch = lib.optionalString stdenv.isAarch64 ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isAarch64 ''
       substituteInPlace setup.py \
       --replace "'-msse2'," ""
   '';
diff --git a/pkgs/applications/science/biology/paml/default.nix b/pkgs/applications/science/biology/paml/default.nix
index f742e33e15cf..1e21d18242bd 100644
--- a/pkgs/applications/science/biology/paml/default.nix
+++ b/pkgs/applications/science/biology/paml/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-P/oHaLxoQzjFuvmHyRdShHv1ayruy6O/I9w8aTyya2s=";
   };
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-D_POSIX_C_SOURCE";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-D_POSIX_C_SOURCE";
 
   preBuild = ''
     cd ./src/
diff --git a/pkgs/applications/science/biology/plink-ng/default.nix b/pkgs/applications/science/biology/plink-ng/default.nix
index b91655ac8fda..b66bed97a94a 100644
--- a/pkgs/applications/science/biology/plink-ng/default.nix
+++ b/pkgs/applications/science/biology/plink-ng/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "1zhffjbwpd50dxywccbnv1rxy9njwz73l4awc5j7i28rgj3davcq";
   };
 
-  buildInputs = [ zlib ] ++ (if stdenv.isDarwin then [ darwin.apple_sdk.frameworks.Accelerate ] else [ blas lapack ]) ;
+  buildInputs = [ zlib ] ++ (if stdenv.hostPlatform.isDarwin then [ darwin.apple_sdk.frameworks.Accelerate ] else [ blas lapack ]) ;
 
   preBuild = ''
     sed -i 's|zlib-1.2.8/zlib.h|zlib.h|g' *.c *.h
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Comprehensive update to the PLINK association analysis toolset";
     mainProgram = "plink";
     homepage = "https://www.cog-genomics.org/plink2";
diff --git a/pkgs/applications/science/biology/repseek/default.nix b/pkgs/applications/science/biology/repseek/default.nix
index e5e0193f7911..9b38171b34ef 100644
--- a/pkgs/applications/science/biology/repseek/default.nix
+++ b/pkgs/applications/science/biology/repseek/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
     substituteInPlace Makefile \
       --replace "INSTALLDIR = \$\$HOME/bin" "INSTALLDIR = $out/bin/" \
       --replace "CC= gcc" "CC = $CC"
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace Makefile --replace "MACHINE = MACOSX" "MACHINE = LINUX"
   '';
 
diff --git a/pkgs/applications/science/biology/sortmerna/default.nix b/pkgs/applications/science/biology/sortmerna/default.nix
index c19556318843..b6291ea85297 100644
--- a/pkgs/applications/science/biology/sortmerna/default.nix
+++ b/pkgs/applications/science/biology/sortmerna/default.nix
@@ -56,6 +56,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.x86_64;
     homepage = "https://bioinfo.lifl.fr/RNA/sortmerna/";
     maintainers = with maintainers; [ luispedro ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/science/biology/subread/default.nix b/pkgs/applications/science/biology/subread/default.nix
index 62ea61af9192..d2ee518883b5 100644
--- a/pkgs/applications/science/biology/subread/default.nix
+++ b/pkgs/applications/science/biology/subread/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   configurePhase = ''
     cd src
-    cp Makefile.${if stdenv.isLinux then "Linux" else "MacOS"} Makefile
+    cp Makefile.${if stdenv.hostPlatform.isLinux then "Linux" else "MacOS"} Makefile
   '';
 
   makeFlags = [ "CC_EXEC=cc" ];
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "High-performance read alignment, quantification and mutation discovery";
     license = licenses.gpl3;
     maintainers = with maintainers; [ jbedo ];
diff --git a/pkgs/applications/science/biology/svaba/default.nix b/pkgs/applications/science/biology/svaba/default.nix
index fec5a5a3b92d..cdb6c4f9c8aa 100644
--- a/pkgs/applications/science/biology/svaba/default.nix
+++ b/pkgs/applications/science/biology/svaba/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Structural variant and INDEL caller for DNA sequencing data, using genome-wide local assembly";
     mainProgram = "svaba";
     license = licenses.gpl3;
diff --git a/pkgs/applications/science/biology/whisper/default.nix b/pkgs/applications/science/biology/whisper/default.nix
index a69b39f4e089..6c8bb21df6a5 100644
--- a/pkgs/applications/science/biology/whisper/default.nix
+++ b/pkgs/applications/science/biology/whisper/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Short read sequence mapper";
     license = licenses.gpl3;
     homepage = "https://github.com/refresh-bio/whisper";
diff --git a/pkgs/applications/science/chemistry/apbs/default.nix b/pkgs/applications/science/chemistry/apbs/default.nix
index ec8f8e7ffbf6..766e4dcbd557 100644
--- a/pkgs/applications/science/chemistry/apbs/default.nix
+++ b/pkgs/applications/science/chemistry/apbs/default.nix
@@ -84,7 +84,7 @@ stdenv.mkDerivation (finalAttrs: {
     suitesparse
     blas
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libintl
     libiconv
   ];
diff --git a/pkgs/applications/science/chemistry/autodock-vina/default.nix b/pkgs/applications/science/chemistry/autodock-vina/default.nix
index d56b8a02a20d..844fe5fea7ed 100644
--- a/pkgs/applications/science/chemistry/autodock-vina/default.nix
+++ b/pkgs/applications/science/chemistry/autodock-vina/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [
     boost'
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     glibc.static
   ];
 
diff --git a/pkgs/applications/science/chemistry/element/default.nix b/pkgs/applications/science/chemistry/element/default.nix
index cc80cb058d92..dc03eac51028 100644
--- a/pkgs/applications/science/chemistry/element/default.nix
+++ b/pkgs/applications/science/chemistry/element/default.nix
@@ -19,6 +19,6 @@ buildGoModule rec {
     homepage = "https://github.com/gennaro-tedesco/element";
     license = licenses.asl20;
     maintainers = [ maintainers.j0hax ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/science/chemistry/ergoscf/default.nix b/pkgs/applications/science/chemistry/ergoscf/default.nix
index 3ee33cf19b74..ceaeb3336427 100644
--- a/pkgs/applications/science/chemistry/ergoscf/default.nix
+++ b/pkgs/applications/science/chemistry/ergoscf/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   configureFlags = [
     "--enable-linalgebra-templates"
     "--enable-performance"
-  ] ++ lib.optional stdenv.isx86_64 "--enable-sse-intrinsics";
+  ] ++ lib.optional stdenv.hostPlatform.isx86_64 "--enable-sse-intrinsics";
 
   LDFLAGS = "-lblas -llapack";
 
diff --git a/pkgs/applications/science/chemistry/gwyddion/default.nix b/pkgs/applications/science/chemistry/gwyddion/default.nix
index 9e64ee7afe4d..c7440e3fad81 100644
--- a/pkgs/applications/science/chemistry/gwyddion/default.nix
+++ b/pkgs/applications/science/chemistry/gwyddion/default.nix
@@ -11,7 +11,7 @@
   zlibSupport ? true, zlib,
   libuniqueSupport ? true, libunique,
   libpngSupport ? true, libpng,
-  openglSupport ? !stdenv.isDarwin, libGL
+  openglSupport ? !stdenv.hostPlatform.isDarwin, libGL
 }:
 
 stdenv.mkDerivation rec {
@@ -60,6 +60,6 @@ stdenv.mkDerivation rec {
     platforms = with lib.platforms; linux ++ darwin;
     maintainers = [ ];
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/applications/science/computer-architecture/timeloop/default.nix b/pkgs/applications/science/computer-architecture/timeloop/default.nix
index 7fc5da8dfa89..3a70478262d5 100644
--- a/pkgs/applications/science/computer-architecture/timeloop/default.nix
+++ b/pkgs/applications/science/computer-architecture/timeloop/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     yaml-cpp
     ncurses
     accelergy
-   ] ++ lib.optionals stdenv.isLinux [ gpm ];
+   ] ++ lib.optionals stdenv.hostPlatform.isLinux [ gpm ];
 
   preConfigure = ''
     cp -r ./pat-public/src/pat ./src/pat
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
     substituteInPlace ./SConstruct \
       --replace-fail "env.Replace(AR = \"gcc-ar\")" "pass" \
       --replace-fail "env.Replace(RANLIB = \"gcc-ranlib\")" "pass"
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # prevent clang from dying on errors that gcc is fine with
     substituteInPlace ./src/SConscript --replace "-Werror" "-Wno-inconsistent-missing-override"
 
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
   sconsFlags =
     # will fail on clang/darwin on link without --static due to undefined extern
     # however, will fail with static on linux as nixpkgs deps aren't static
-    lib.optional stdenv.isDarwin "--static"
+    lib.optional stdenv.hostPlatform.isDarwin "--static"
     ++ lib.optional enableAccelergy "--accelergy"
     ++ lib.optional enableISL "--with-isl";
 
diff --git a/pkgs/applications/science/electronics/dsview/default.nix b/pkgs/applications/science/electronics/dsview/default.nix
index 5d6c83f5dfaa..48a94468ef0b 100644
--- a/pkgs/applications/science/electronics/dsview/default.nix
+++ b/pkgs/applications/science/electronics/dsview/default.nix
@@ -21,12 +21,12 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ cmake pkg-config wrapQtAppsHook ]
-    ++ lib.optional stdenv.isDarwin desktopToDarwinBundle;
+    ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   buildInputs = [
     boost fftw qtbase qtsvg libusb1 libzip
     python3
-  ] ++ lib.optional stdenv.isLinux qtwayland;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux qtwayland;
 
   meta = with lib; {
     description = "GUI program for supporting various instruments from DreamSourceLab, including logic analyzer, oscilloscope, etc";
diff --git a/pkgs/applications/science/electronics/flopoco/default.nix b/pkgs/applications/science/electronics/flopoco/default.nix
index e15ef3277a66..ef6f297c63cc 100644
--- a/pkgs/applications/science/electronics/flopoco/default.nix
+++ b/pkgs/applications/science/electronics/flopoco/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  postPatch = lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) ''
+  postPatch = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) ''
     sed -i "s/-pg//g" {,src/Apps/TaMaDi/}CMakeLists.txt
   '';
 
diff --git a/pkgs/applications/science/electronics/fritzing/default.nix b/pkgs/applications/science/electronics/fritzing/default.nix
index 9eb7b5044502..04ca24861c0d 100644
--- a/pkgs/applications/science/electronics/fritzing/default.nix
+++ b/pkgs/applications/science/electronics/fritzing/default.nix
@@ -60,7 +60,7 @@ stdenv.mkDerivation {
     quazip
     libngspice
     clipper
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
   ];
 
@@ -93,7 +93,7 @@ stdenv.mkDerivation {
     "phoenix.pro"
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/Applications
     mv $out/bin/Fritzing.app $out/Applications/Fritzing.app
     cp FritzingInfo.plist $out/Applications/Fritzing.app/Contents/Info.plist
diff --git a/pkgs/applications/science/electronics/gtkwave/default.nix b/pkgs/applications/science/electronics/gtkwave/default.nix
index d28a5cf80906..5649b6bb5a77 100644
--- a/pkgs/applications/science/electronics/gtkwave/default.nix
+++ b/pkgs/applications/science/electronics/gtkwave/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config wrapGAppsHook3 ];
   buildInputs = [ bzip2 glib gperf gtk3 judy tcl tk xz ]
-    ++ lib.optional stdenv.isDarwin gtk-mac-integration;
+    ++ lib.optional stdenv.hostPlatform.isDarwin gtk-mac-integration;
 
   # fix compilation under Darwin
   # remove these patches upon next release
diff --git a/pkgs/applications/science/electronics/hal-hardware-analyzer/default.nix b/pkgs/applications/science/electronics/hal-hardware-analyzer/default.nix
index c193352eb455..acf52931c7ed 100644
--- a/pkgs/applications/science/electronics/hal-hardware-analyzer/default.nix
+++ b/pkgs/applications/science/electronics/hal-hardware-analyzer/default.nix
@@ -38,7 +38,7 @@ let
         hash = "sha256-adU5SctH+H54UaAmr5BZInytD3wjUzLtQbCwngAWs4o=";
       })
     ];
-    postPatch = prev.postPatch + lib.optionalString stdenv.isAarch64 ''
+    postPatch = prev.postPatch + lib.optionalString stdenv.hostPlatform.isAarch64 ''
       # https://github.com/igraph/igraph/issues/1694
       substituteInPlace tests/CMakeLists.txt \
         --replace "igraph_scg_grouping3" "" \
@@ -136,7 +136,7 @@ in stdenv.mkDerivation rec {
   cmakeBuildType = "MinSizeRel";
 
   # some plugins depend on other plugins and need to be able to load them
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     find $out/lib/hal_plugins -name '*.so*' | while read -r f ; do
       patchelf --set-rpath "$(patchelf --print-rpath "$f"):$out/lib/hal_plugins" "$f"
     done
diff --git a/pkgs/applications/science/electronics/kicad/base.nix b/pkgs/applications/science/electronics/kicad/base.nix
index 310f9b1c6067..3d39261bc7a5 100644
--- a/pkgs/applications/science/electronics/kicad/base.nix
+++ b/pkgs/applications/science/electronics/kicad/base.nix
@@ -137,7 +137,7 @@ stdenv.mkDerivation rec {
   ]
   # wanted by configuration on linux, doesn't seem to affect performance
   # no effect on closure size
-  ++ optionals (stdenv.isLinux) [
+  ++ optionals (stdenv.hostPlatform.isLinux) [
     util-linux
     libselinux
     libsepol
diff --git a/pkgs/applications/science/electronics/kicad/default.nix b/pkgs/applications/science/electronics/kicad/default.nix
index 4dd8fa743121..a5cceb492522 100644
--- a/pkgs/applications/science/electronics/kicad/default.nix
+++ b/pkgs/applications/science/electronics/kicad/default.nix
@@ -22,7 +22,7 @@
 , pname ? "kicad"
 , stable ? true
 , testing ? false
-, withNgspice ? !stdenv.isDarwin
+, withNgspice ? !stdenv.hostPlatform.isDarwin
 , libngspice
 , withScripting ? true
 , python3
@@ -234,7 +234,7 @@ stdenv.mkDerivation rec {
   # $out and $program_PYTHONPATH don't exist when makeWrapperArgs gets set?
   installPhase =
     let
-      bin = if stdenv.isDarwin then "*.app/Contents/MacOS" else "bin";
+      bin = if stdenv.hostPlatform.isDarwin then "*.app/Contents/MacOS" else "bin";
       tools = [ "kicad" "pcbnew" "eeschema" "gerbview" "pcb_calculator" "pl_editor" "bitmap2component" ];
       utils = [ "dxf2idf" "idf2vrml" "idfcyl" "idfrect" "kicad-cli" ];
     in
@@ -286,7 +286,7 @@ stdenv.mkDerivation rec {
     license = lib.licenses.gpl3Plus;
     maintainers = with lib.maintainers; [ evils ];
     platforms = lib.platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "kicad";
   };
 }
diff --git a/pkgs/applications/science/electronics/nanovna-saver/default.nix b/pkgs/applications/science/electronics/nanovna-saver/default.nix
index d4c3c68991a2..1f483034d2b1 100644
--- a/pkgs/applications/science/electronics/nanovna-saver/default.nix
+++ b/pkgs/applications/science/electronics/nanovna-saver/default.nix
@@ -21,7 +21,7 @@ python3.pkgs.buildPythonApplication rec {
     qt6.qtbase
   ];
 
-  buildInputs = lib.optional stdenv.isLinux qt6.qtwayland;
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux qt6.qtwayland;
 
   propagatedBuildInputs = with python3.pkgs; [
     cython
diff --git a/pkgs/applications/science/electronics/openboardview/default.nix b/pkgs/applications/science/electronics/openboardview/default.nix
index 60ee6cef7753..a3a906c25c2b 100644
--- a/pkgs/applications/science/electronics/openboardview/default.nix
+++ b/pkgs/applications/science/electronics/openboardview/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ cmake pkg-config python3 wrapGAppsHook3 ];
-  buildInputs = [ SDL2 fontconfig gtk3 ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ SDL2 fontconfig gtk3 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ];
 
@@ -53,10 +53,10 @@ stdenv.mkDerivation rec {
   ];
 
   dontWrapGApps = true;
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p "$out/Applications"
       mv "$out/openboardview.app" "$out/Applications/OpenBoardView.app"
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       wrapGApp "$out/bin/${pname}" \
         --prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [ gtk3 ]}
   '';
diff --git a/pkgs/applications/science/electronics/pulseview/default.nix b/pkgs/applications/science/electronics/pulseview/default.nix
index b6d40a19a14b..3a40b107817d 100644
--- a/pkgs/applications/science/electronics/pulseview/default.nix
+++ b/pkgs/applications/science/electronics/pulseview/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     pkg-config
     qttools
     wrapQtAppsHook
-  ] ++ lib.optional stdenv.isDarwin desktopToDarwinBundle;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   buildInputs = [
     glib
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
     pcre
     python3
     qtsvg
-  ] ++ lib.optionals stdenv.isLinux [ bluez ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ bluez ];
 
   meta = with lib; {
     description = "Qt-based LA/scope/MSO GUI for sigrok (a signal analysis software suite)";
diff --git a/pkgs/applications/science/electronics/sv-lang/default.nix b/pkgs/applications/science/electronics/sv-lang/default.nix
index 58ecf986cf7a..928cf3059385 100644
--- a/pkgs/applications/science/electronics/sv-lang/default.nix
+++ b/pkgs/applications/science/electronics/sv-lang/default.nix
@@ -62,7 +62,7 @@ stdenv.mkDerivation rec {
 
   # TODO: a mysterious linker error occurs when building the unittests on darwin.
   # The error occurs when using catch2_3 in nixpkgs, not when fetching catch2_3 using CMake
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "SystemVerilog compiler and language services";
diff --git a/pkgs/applications/science/electronics/tkgate/1.x.nix b/pkgs/applications/science/electronics/tkgate/1.x.nix
index f20ce5e0acd0..03883652e637 100644
--- a/pkgs/applications/science/electronics/tkgate/1.x.nix
+++ b/pkgs/applications/science/electronics/tkgate/1.x.nix
@@ -1,8 +1,8 @@
 { lib, stdenv, fetchurl, tcl, tk, libX11, glibc, which, bison, flex, imake, xorgproto, gccmakedep }:
 
 let
-  libiconvInc = lib.optionalString stdenv.isLinux "${glibc.dev}/include";
-  libiconvLib = lib.optionalString stdenv.isLinux "${glibc.out}/lib";
+  libiconvInc = lib.optionalString stdenv.hostPlatform.isLinux "${glibc.dev}/include";
+  libiconvLib = lib.optionalString stdenv.hostPlatform.isLinux "${glibc.out}/lib";
 in
 stdenv.mkDerivation rec {
   pname = "tkgate";
diff --git a/pkgs/applications/science/electronics/verilator/default.nix b/pkgs/applications/science/electronics/verilator/default.nix
index 1bed87615756..b7f2abd37ba7 100644
--- a/pkgs/applications/science/electronics/verilator/default.nix
+++ b/pkgs/applications/science/electronics/verilator/default.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
     # cmake
   ];
 
-  doCheck = stdenv.isLinux; # darwin tests are broken for now...
+  doCheck = stdenv.hostPlatform.isLinux; # darwin tests are broken for now...
   checkTarget = "test";
 
   preConfigure = "autoconf";
diff --git a/pkgs/applications/science/electronics/xschem/default.nix b/pkgs/applications/science/electronics/xschem/default.nix
index 826181139c19..72f4687f5c85 100644
--- a/pkgs/applications/science/electronics/xschem/default.nix
+++ b/pkgs/applications/science/electronics/xschem/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   hardeningDisable = [ "format" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Schematic capture and netlisting EDA tool";
     longDescription = ''
       Xschem is a schematic capture program, it allows creation of
diff --git a/pkgs/applications/science/electronics/xyce/default.nix b/pkgs/applications/science/electronics/xyce/default.nix
index 85cdafb66057..56fc59c08099 100644
--- a/pkgs/applications/science/electronics/xyce/default.nix
+++ b/pkgs/applications/science/electronics/xyce/default.nix
@@ -173,7 +173,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
     description = "High-performance analog circuit simulator";
     longDescription = ''
       Xyce is a SPICE-compatible, high-performance analog circuit simulator,
diff --git a/pkgs/applications/science/logic/alt-ergo/default.nix b/pkgs/applications/science/logic/alt-ergo/default.nix
index 03787a3a084b..73dcd6596008 100644
--- a/pkgs/applications/science/logic/alt-ergo/default.nix
+++ b/pkgs/applications/science/logic/alt-ergo/default.nix
@@ -28,7 +28,7 @@ ocamlPackages.buildDunePackage {
 
   inherit pname version src;
 
-  nativeBuildInputs = [ ocamlPackages.menhir ] ++ lib.optionals stdenv.isDarwin [ darwin.sigtool ];
+  nativeBuildInputs = [ ocamlPackages.menhir ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.sigtool ];
   buildInputs = [ alt-ergo-parsers ] ++ (with ocamlPackages; [ cmdliner dune-site ]);
 
   meta = {
diff --git a/pkgs/applications/science/logic/boolector/default.nix b/pkgs/applications/science/logic/boolector/default.nix
index 1fd6bf7dc543..30e3cf500211 100644
--- a/pkgs/applications/science/logic/boolector/default.nix
+++ b/pkgs/applications/science/logic/boolector/default.nix
@@ -34,11 +34,11 @@ stdenv.mkDerivation rec {
   nativeCheckInputs = [ python3 ];
   doCheck = true;
   preCheck =
-    let var = if stdenv.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
+    let var = if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
     in
       # tests modelgen and modelgensmt2 spawn boolector in another processes and
       # macOS strips DYLD_LIBRARY_PATH, hardcode it for testing
-      lib.optionalString stdenv.isDarwin ''
+      lib.optionalString stdenv.hostPlatform.isDarwin ''
         cp -r bin bin.back
         install_name_tool -change libboolector.dylib $(pwd)/lib/libboolector.dylib bin/boolector
       '' + ''
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
         patchShebangs ..
       '';
 
-  postCheck = lib.optionalString stdenv.isDarwin ''
+  postCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     rm -rf bin
     mv bin.back bin
   '';
diff --git a/pkgs/applications/science/logic/btor2tools/default.nix b/pkgs/applications/science/logic/btor2tools/default.nix
index 5aca699f9d3d..2b547eeb9221 100644
--- a/pkgs/applications/science/logic/btor2tools/default.nix
+++ b/pkgs/applications/science/logic/btor2tools/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "0ncl4xwms8d656x95ga8v8zjybx4cmdl5hlcml7dpcgm3p8qj4ks";
   };
 
-  nativeBuildInputs = [ cmake ] ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+  nativeBuildInputs = [ cmake ] ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   installPhase = ''
     mkdir -p $out $dev/include/btor2parser/ $lib/lib
diff --git a/pkgs/applications/science/logic/cbmc/default.nix b/pkgs/applications/science/logic/cbmc/default.nix
index c980e84f9d9f..0bfb51273758 100644
--- a/pkgs/applications/science/logic/cbmc/default.nix
+++ b/pkgs/applications/science/logic/cbmc/default.nix
@@ -83,6 +83,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ jiegec ];
     platforms = platforms.unix;
     # error: no member named 'aligned_alloc' in the global namespace
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 }
diff --git a/pkgs/applications/science/logic/cvc4/default.nix b/pkgs/applications/science/logic/cvc4/default.nix
index 2dc12b7ab723..c44b495f2cae 100644
--- a/pkgs/applications/science/logic/cvc4/default.nix
+++ b/pkgs/applications/science/logic/cvc4/default.nix
@@ -15,13 +15,13 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config cmake ];
   buildInputs = [ gmp git python3.pkgs.toml readline swig libantlr3c antlr3_4 boost jdk python3 ]
-    ++ lib.optionals (!stdenv.isDarwin) [ cln ];
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ cln ];
   configureFlags = [
     "--enable-language-bindings=c,c++,java"
     "--enable-gpl"
     "--with-readline"
     "--with-boost=${boost.dev}"
-  ] ++ lib.optionals (!stdenv.isDarwin) [ "--with-cln" ];
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ "--with-cln" ];
 
   prePatch = ''
     patch -p1 -i ${./minisat-fenv.patch} -d src/prop/minisat
diff --git a/pkgs/applications/science/logic/elan/default.nix b/pkgs/applications/science/logic/elan/default.nix
index d43ae16a647e..04c5f746f647 100644
--- a/pkgs/applications/science/logic/elan/default.nix
+++ b/pkgs/applications/science/logic/elan/default.nix
@@ -19,11 +19,11 @@ rustPlatform.buildRustPackage rec {
 
   OPENSSL_NO_VENDOR = 1;
   buildInputs = [ curl zlib openssl ]
-    ++ lib.optional stdenv.isDarwin libiconv;
+    ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   buildFeatures = [ "no-self-update" ];
 
-  patches = lib.optionals stdenv.isLinux [
+  patches = lib.optionals stdenv.hostPlatform.isLinux [
     # Run patchelf on the downloaded binaries.
     # This is necessary because Lean 4 is now dynamically linked.
     (runCommand "0001-dynamically-patchelf-binaries.patch" {
diff --git a/pkgs/applications/science/logic/formula/default.nix b/pkgs/applications/science/logic/formula/default.nix
index 20267e6071c5..bfaf2489bdf7 100644
--- a/pkgs/applications/science/logic/formula/default.nix
+++ b/pkgs/applications/science/logic/formula/default.nix
@@ -14,9 +14,9 @@ buildDotnetModule rec {
   nugetDeps = ./nuget.nix;
   projectFile = "Src/CommandLine/CommandLine.csproj";
 
-  postFixup = if stdenv.isLinux then ''
+  postFixup = if stdenv.hostPlatform.isLinux then ''
     mv $out/bin/CommandLine $out/bin/formula
-  '' else lib.optionalString stdenv.isDarwin ''
+  '' else lib.optionalString stdenv.hostPlatform.isDarwin ''
     makeWrapper ${dotnetCorePackages.runtime_6_0}/bin/dotnet $out/bin/formula \
       --add-flags "$out/lib/formula-dotnet/CommandLine.dll" \
       --prefix DYLD_LIBRARY_PATH : $out/lib/formula-dotnet/runtimes/macos/native
diff --git a/pkgs/applications/science/logic/hol/default.nix b/pkgs/applications/science/logic/hol/default.nix
index f23dce326dd5..883eb4331c9f 100644
--- a/pkgs/applications/science/logic/hol/default.nix
+++ b/pkgs/applications/science/logic/hol/default.nix
@@ -62,7 +62,7 @@ stdenv.mkDerivation {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Interactive theorem prover based on Higher-Order Logic";
     longDescription = ''
       HOL4 is the latest version of the HOL interactive proof
diff --git a/pkgs/applications/science/logic/key/default.nix b/pkgs/applications/science/logic/key/default.nix
index 0cd5e90cbb50..d97eb42b4027 100644
--- a/pkgs/applications/science/logic/key/default.nix
+++ b/pkgs/applications/science/logic/key/default.nix
@@ -51,7 +51,7 @@ in stdenv.mkDerivation rec {
   __darwinAllowLocalNetworking = true;
 
   # tests are broken on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/applications/science/logic/lean/default.nix b/pkgs/applications/science/logic/lean/default.nix
index f0bd2ba777db..4df1d6eb8aab 100644
--- a/pkgs/applications/science/logic/lean/default.nix
+++ b/pkgs/applications/science/logic/lean/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
 
   postPatch = "patchShebangs .";
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace $out/bin/leanpkg \
       --replace "greadlink" "${coreutils}/bin/readlink"
   '';
diff --git a/pkgs/applications/science/logic/lean2/default.nix b/pkgs/applications/science/logic/lean2/default.nix
index e30b8af04735..83cada9e309a 100644
--- a/pkgs/applications/science/logic/lean2/default.nix
+++ b/pkgs/applications/science/logic/lean2/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation {
     license     = licenses.asl20;
     platforms   = platforms.unix;
     maintainers = with maintainers; [ thoughtpolice gebner ];
-    broken      = stdenv.isAarch64;
+    broken      = stdenv.hostPlatform.isAarch64;
     mainProgram = "lean";
   };
 }
diff --git a/pkgs/applications/science/logic/logisim-evolution/default.nix b/pkgs/applications/science/logic/logisim-evolution/default.nix
index 3d86c8cafdbc..465360a20238 100644
--- a/pkgs/applications/science/logic/logisim-evolution/default.nix
+++ b/pkgs/applications/science/logic/logisim-evolution/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation (finalAttrs: {
     makeBinaryWrapper
     copyDesktopItems
     unzip
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     desktopToDarwinBundle
   ];
 
diff --git a/pkgs/applications/science/logic/logisim/default.nix b/pkgs/applications/science/logic/logisim/default.nix
index d278f1e78468..951d5b22deef 100644
--- a/pkgs/applications/science/logic/logisim/default.nix
+++ b/pkgs/applications/science/logic/logisim/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation (finalAttrs: {
     makeBinaryWrapper
     copyDesktopItems
     unzip
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     desktopToDarwinBundle
   ];
 
diff --git a/pkgs/applications/science/logic/mcrl2/default.nix b/pkgs/applications/science/logic/mcrl2/default.nix
index c26e5f2e761f..a0cbdabc5a45 100644
--- a/pkgs/applications/science/logic/mcrl2/default.nix
+++ b/pkgs/applications/science/logic/mcrl2/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   dontWrapQtApps = true;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Toolset for model-checking concurrent systems and protocols";
     longDescription = ''
       A formal specification language with an associated toolset,
diff --git a/pkgs/applications/science/logic/nuXmv/default.nix b/pkgs/applications/science/logic/nuXmv/default.nix
index ad40902e9280..5726796bfa18 100644
--- a/pkgs/applications/science/logic/nuXmv/default.nix
+++ b/pkgs/applications/science/logic/nuXmv/default.nix
@@ -5,21 +5,21 @@ stdenv.mkDerivation rec {
   version = "2.0.0";
 
   src = fetchurl {
-    url = "https://es-static.fbk.eu/tools/nuxmv/downloads/nuXmv-${version}-${if stdenv.isDarwin then "macosx64" else "linux64"}.tar.gz";
-    sha256 = if stdenv.isDarwin
+    url = "https://es-static.fbk.eu/tools/nuxmv/downloads/nuXmv-${version}-${if stdenv.hostPlatform.isDarwin then "macosx64" else "linux64"}.tar.gz";
+    sha256 = if stdenv.hostPlatform.isDarwin
              then "sha256-48I+FhJUUam1nMCMMM47CwGO82BYsNz0eHDHXBfqO2E="
              else "sha256-Gf+QgAjTrysZj7qTtt1wcQPganDtO0YtRY4ykhLPzVo=";
   };
 
   nativeBuildInputs = [ makeWrapper ];
-  buildInputs = lib.optionals stdenv.isDarwin [ gmp ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ gmp ];
   installPhase= ''
     runHook preInstall
     install -Dm755 -t $out/bin ./bin/nuXmv
     runHook postInstall
   '';
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     wrapProgram $out/bin/nuXmv --prefix DYLD_LIBRARY_PATH : ${gmp}/lib
   '';
 
diff --git a/pkgs/applications/science/logic/open-wbo/default.nix b/pkgs/applications/science/logic/open-wbo/default.nix
index 2290ff29224b..798643acc1bb 100644
--- a/pkgs/applications/science/logic/open-wbo/default.nix
+++ b/pkgs/applications/science/logic/open-wbo/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "State-of-the-art MaxSAT and Pseudo-Boolean solver";
     mainProgram = "open-wbo";
     maintainers = with maintainers; [ gebner ];
diff --git a/pkgs/applications/science/logic/opensmt/default.nix b/pkgs/applications/science/logic/opensmt/default.nix
index 1a031e8d1e1d..0ebbbc663caa 100644
--- a/pkgs/applications/science/logic/opensmt/default.nix
+++ b/pkgs/applications/science/logic/opensmt/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Satisfiability modulo theory (SMT) solver";
     mainProgram = "opensmt";
     maintainers = [ maintainers.raskin ];
diff --git a/pkgs/applications/science/logic/picosat/default.nix b/pkgs/applications/science/logic/picosat/default.nix
index 1fef05069a69..23fc2776ba81 100644
--- a/pkgs/applications/science/logic/picosat/default.nix
+++ b/pkgs/applications/science/logic/picosat/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   configurePhase = "./configure.sh --shared --trace";
 
-  makeFlags = lib.optional stdenv.isDarwin
+  makeFlags = lib.optional stdenv.hostPlatform.isDarwin
     "SONAME=-Wl,-install_name,$(out)/lib/libpicosat.so";
 
   installPhase = ''
diff --git a/pkgs/applications/science/logic/satallax/default.nix b/pkgs/applications/science/logic/satallax/default.nix
index bd3e9d3e8351..0f7d05a8823e 100644
--- a/pkgs/applications/science/logic/satallax/default.nix
+++ b/pkgs/applications/science/logic/satallax/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
   '';
 
   # error: invalid suffix on literal; C++11 requires a space between literal and identifier
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-reserved-user-defined-literal";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-reserved-user-defined-literal";
 
   installPhase = ''
     mkdir -p "$out/share/doc/satallax" "$out/bin" "$out/lib" "$out/lib/satallax"
@@ -67,7 +67,7 @@ stdenv.mkDerivation rec {
     cp -r coq* "$out/lib/satallax/"
   '';
 
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
 
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/applications/science/logic/tamarin-prover/default.nix b/pkgs/applications/science/logic/tamarin-prover/default.nix
index 2aa92118b03a..e621b36a773b 100644
--- a/pkgs/applications/science/logic/tamarin-prover/default.nix
+++ b/pkgs/applications/science/logic/tamarin-prover/default.nix
@@ -108,7 +108,7 @@ mkDerivation (common "tamarin-prover" src // {
   executableToolDepends = [ makeWrapper which maude graphviz ];
   postInstall = ''
     wrapProgram $out/bin/tamarin-prover \
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       --set LOCALE_ARCHIVE "${glibcLocales}/lib/locale/locale-archive" \
   '' + ''
       --prefix PATH : ${lib.makeBinPath [ which maude graphviz ]}
diff --git a/pkgs/applications/science/machine-learning/finalfrontier/default.nix b/pkgs/applications/science/machine-learning/finalfrontier/default.nix
index 9dbbe8455d1b..ca495dcc280a 100644
--- a/pkgs/applications/science/machine-learning/finalfrontier/default.nix
+++ b/pkgs/applications/science/machine-learning/finalfrontier/default.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
     pkg-config
   ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     Security
   ];
diff --git a/pkgs/applications/science/machine-learning/finalfusion-utils/default.nix b/pkgs/applications/science/machine-learning/finalfusion-utils/default.nix
index b6fa984e7d5b..2b3bd2776089 100644
--- a/pkgs/applications/science/machine-learning/finalfusion-utils/default.nix
+++ b/pkgs/applications/science/machine-learning/finalfusion-utils/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
     gfortran.cc.lib
     lapack
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/applications/science/math/R/default.nix b/pkgs/applications/science/math/R/default.nix
index b6fac3cca9e5..f2825e13568a 100644
--- a/pkgs/applications/science/math/R/default.nix
+++ b/pkgs/applications/science/math/R/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation (finalAttrs: {
     bzip2 gfortran libX11 libXmu libXt libXt libjpeg libpng libtiff ncurses
     pango pcre2 perl readline (texliveSmall.withPackages (ps: with ps; [ inconsolata helvetic ps.texinfo fancyvrb cm-super rsfs ])) xz zlib less texinfo graphviz icu
     bison imake which blas lapack curl tcl tk jdk tzdata
-  ] ++ lib.optionals stdenv.isDarwin [ Cocoa Foundation libobjc libcxx ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa Foundation libobjc libcxx ];
 
   patches = [
     ./no-usr-local-search-paths.patch
@@ -41,7 +41,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # Test of the examples for package 'tcltk' fails in Darwin sandbox. See:
   # https://github.com/NixOS/nixpkgs/issues/146131
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure \
       --replace "-install_name libRblas.dylib" "-install_name $out/lib/R/lib/libRblas.dylib" \
       --replace "-install_name libRlapack.dylib" "-install_name $out/lib/R/lib/libRlapack.dylib" \
@@ -77,7 +77,7 @@ stdenv.mkDerivation (finalAttrs: {
       RANLIB=$(type -p ranlib)
       r_cv_have_curl728=yes
       R_SHELL="${stdenv.shell}"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       --disable-R-framework
       --without-x
       OBJC="clang"
diff --git a/pkgs/applications/science/math/caffe/default.nix b/pkgs/applications/science/math/caffe/default.nix
index 2390e9137751..f82cef9d881c 100644
--- a/pkgs/applications/science/math/caffe/default.nix
+++ b/pkgs/applications/science/math/caffe/default.nix
@@ -73,7 +73,7 @@ stdenv.mkDerivation rec {
                 ++ lib.optional ncclSupport nccl
                 ++ lib.optionals leveldbSupport [ leveldb snappy ]
                 ++ lib.optionals pythonSupport [ python numpy ]
-                ++ lib.optionals stdenv.isDarwin [ Accelerate CoreGraphics CoreVideo ]
+                ++ lib.optionals stdenv.hostPlatform.isDarwin [ Accelerate CoreGraphics CoreVideo ]
                 ;
 
   propagatedBuildInputs = lib.optionals pythonSupport (
diff --git a/pkgs/applications/science/math/cemu-ti/default.nix b/pkgs/applications/science/math/cemu-ti/default.nix
index 824476090c24..547b57b312db 100644
--- a/pkgs/applications/science/math/cemu-ti/default.nix
+++ b/pkgs/applications/science/math/cemu-ti/default.nix
@@ -41,6 +41,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ luc65r ];
     platforms = [ "x86_64-linux" "x86_64-darwin" ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/applications/science/math/colpack/default.nix b/pkgs/applications/science/math/colpack/default.nix
index 768366cc5d7a..591ac3281e5e 100644
--- a/pkgs/applications/science/math/colpack/default.nix
+++ b/pkgs/applications/science/math/colpack/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook ];
 
   configureFlags = [
-    "--enable-openmp=${if stdenv.isLinux then "yes" else "no"}"
+    "--enable-openmp=${if stdenv.hostPlatform.isLinux then "yes" else "no"}"
     "--enable-examples=no"
   ];
 
diff --git a/pkgs/applications/science/math/ecm/default.nix b/pkgs/applications/science/math/ecm/default.nix
index 222db0e98e6a..ed1c07d87ec1 100644
--- a/pkgs/applications/science/math/ecm/default.nix
+++ b/pkgs/applications/science/math/ecm/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation {
   };
 
   # See https://trac.sagemath.org/ticket/19233
-  configureFlags = lib.optional stdenv.isDarwin "--disable-asm-redc";
+  configureFlags = lib.optional stdenv.hostPlatform.isDarwin "--disable-asm-redc";
 
   buildInputs = [ m4 gmp ];
 
diff --git a/pkgs/applications/science/math/geogebra/default.nix b/pkgs/applications/science/math/geogebra/default.nix
index 5fa4862bb9b4..1d5fa4a9ef45 100644
--- a/pkgs/applications/science/math/geogebra/default.nix
+++ b/pkgs/applications/science/math/geogebra/default.nix
@@ -95,6 +95,6 @@ let
     '';
   };
 in
-if stdenv.isDarwin
+if stdenv.hostPlatform.isDarwin
 then darwinPkg
 else linuxPkg
diff --git a/pkgs/applications/science/math/geogebra/geogebra6.nix b/pkgs/applications/science/math/geogebra/geogebra6.nix
index 40169a72e4a6..d57175daff93 100644
--- a/pkgs/applications/science/math/geogebra/geogebra6.nix
+++ b/pkgs/applications/science/math/geogebra/geogebra6.nix
@@ -97,4 +97,4 @@ let
     };
   };
 in
-if stdenv.isDarwin then darwinPkg else linuxPkg
+if stdenv.hostPlatform.isDarwin then darwinPkg else linuxPkg
diff --git a/pkgs/applications/science/math/giac/default.nix b/pkgs/applications/science/math/giac/default.nix
index 4c0d7235efc7..ce009975c1ba 100644
--- a/pkgs/applications/science/math/giac/default.nix
+++ b/pkgs/applications/science/math/giac/default.nix
@@ -102,7 +102,7 @@ stdenv.mkDerivation rec {
     # when fltk is disabled. disable these tests for now.
     echo > check/chk_fhan2
     echo > check/chk_fhan9
-  '' + lib.optionalString (stdenv.isDarwin) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin) ''
     # these cover a known regression in giac, likely due to how pari state
     # is shared between multiple giac instances (see pari.cc.old).
     # see https://github.com/NixOS/nixpkgs/pull/264126 for more information
@@ -118,7 +118,7 @@ stdenv.mkDerivation rec {
     "--enable-ao" "--enable-ecm" "--enable-glpk"
   ] ++ lib.optionals enableGUI [
     "--enable-gui" "--with-x"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--disable-nls"
   ] ++ lib.optionals (!enableGUI) [
     "--disable-fltk"
diff --git a/pkgs/applications/science/math/ginac/default.nix b/pkgs/applications/science/math/ginac/default.nix
index d9d12cbf388d..d2713befed38 100644
--- a/pkgs/applications/science/math/ginac/default.nix
+++ b/pkgs/applications/science/math/ginac/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   propagatedBuildInputs = [ cln ];
 
   buildInputs = [ readline ]
-    ++ lib.optional stdenv.isDarwin gmp;
+    ++ lib.optional stdenv.hostPlatform.isDarwin gmp;
 
   nativeBuildInputs = [ pkg-config python3 ];
 
diff --git a/pkgs/applications/science/math/gmsh/default.nix b/pkgs/applications/science/math/gmsh/default.nix
index 3e88e7f94bbe..2219815824e7 100644
--- a/pkgs/applications/science/math/gmsh/default.nix
+++ b/pkgs/applications/science/math/gmsh/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     blas lapack gmm fltk libjpeg zlib opencascade-occt
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libGL libGLU xorg.libXrender xorg.libXcursor xorg.libXfixes
     xorg.libXext xorg.libXft xorg.libXinerama xorg.libX11 xorg.libSM
     xorg.libICE
diff --git a/pkgs/applications/science/math/lp_solve/default.nix b/pkgs/applications/science/math/lp_solve/default.nix
index 773f1f3c089e..67d7bfdba90c 100644
--- a/pkgs/applications/science/math/lp_solve/default.nix
+++ b/pkgs/applications/science/math/lp_solve/default.nix
@@ -15,16 +15,16 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-bUq/9cxqqpM66ObBeiJt8PwLZxxDj2lxXUHQn+gfkC8=";
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
     fixDarwinDylibNames
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     autoSignDarwinBinariesHook
   ];
 
   env = {
     NIX_CFLAGS_COMPILE = "-Wno-error=implicit-int";
-  } // lib.optionalAttrs (stdenv.isDarwin && stdenv.isx86_64) {
+  } // lib.optionalAttrs (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) {
     NIX_LDFLAGS = "-headerpad_max_install_names";
   };
 
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
 
   buildPhase =
     let
-      ccc = if stdenv.isDarwin then "ccc.osx" else "ccc";
+      ccc = if stdenv.hostPlatform.isDarwin then "ccc.osx" else "ccc";
     in
     ''
       runHook preBuild
diff --git a/pkgs/applications/science/math/palp/default.nix b/pkgs/applications/science/math/palp/default.nix
index a3b54b78f99b..0db35ba89ae6 100644
--- a/pkgs/applications/science/math/palp/default.nix
+++ b/pkgs/applications/science/math/palp/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     "format"
   ];
 
-  patchPhase = lib.optionalString stdenv.isDarwin ''
+  patchPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace GNUmakefile --replace gcc cc
   '';
 
diff --git a/pkgs/applications/science/math/qalculate-gtk/default.nix b/pkgs/applications/science/math/qalculate-gtk/default.nix
index a27d7c1ffdb6..306d6141ac17 100644
--- a/pkgs/applications/science/math/qalculate-gtk/default.nix
+++ b/pkgs/applications/science/math/qalculate-gtk/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation (finalAttrs: {
   hardeningDisable = [ "format" ];
 
   nativeBuildInputs = [ intltool pkg-config autoreconfHook wrapGAppsHook3 ]
-    ++ lib.optionals stdenv.isDarwin [ desktopToDarwinBundle ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ desktopToDarwinBundle ];
   buildInputs = [ libqalculate gtk3 curl ];
   enableParallelBuilding = true;
 
diff --git a/pkgs/applications/science/math/qalculate-qt/default.nix b/pkgs/applications/science/math/qalculate-qt/default.nix
index b1db5ce31a79..2cde63449888 100644
--- a/pkgs/applications/science/math/qalculate-qt/default.nix
+++ b/pkgs/applications/science/math/qalculate-qt/default.nix
@@ -13,14 +13,14 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ qmake intltool pkg-config qttools wrapQtAppsHook ];
   buildInputs = [ libqalculate qtbase qtsvg ]
-    ++ lib.optionals stdenv.isLinux [ qtwayland ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ qtwayland ];
 
   postPatch = ''
     substituteInPlace qalculate-qt.pro\
       --replace "LRELEASE" "${qttools.dev}/bin/lrelease"
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv $out/bin/qalculate-qt.app $out/Applications
     makeWrapper $out/{Applications/qalculate-qt.app/Contents/MacOS,bin}/qalculate-qt
diff --git a/pkgs/applications/science/math/ratpoints/default.nix b/pkgs/applications/science/math/ratpoints/default.nix
index f2aa1aac2607..4aaed4a1b0ed 100644
--- a/pkgs/applications/science/math/ratpoints/default.nix
+++ b/pkgs/applications/science/math/ratpoints/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ gmp ];
 
   makeFlags = [ "CC=${stdenv.cc.targetPrefix}cc" ];
-  buildFlags = lib.optionals stdenv.isDarwin ["CCFLAGS2=-lgmp -lc -lm" "CCFLAGS=-UUSE_SSE"];
+  buildFlags = lib.optionals stdenv.hostPlatform.isDarwin ["CCFLAGS2=-lgmp -lc -lm" "CCFLAGS=-UUSE_SSE"];
   installFlags = [ "INSTALL_DIR=$(out)" ];
 
   preInstall = ''mkdir -p "$out"/{bin,share,lib,include}'';
diff --git a/pkgs/applications/science/math/scalp/default.nix b/pkgs/applications/science/math/scalp/default.nix
index f6ec20faff59..a4d3dc52e0a9 100644
--- a/pkgs/applications/science/math/scalp/default.nix
+++ b/pkgs/applications/science/math/scalp/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     lp_solve
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace CMakeLists.txt \
       --replace "\''$ORIGIN" "\''${CMAKE_INSTALL_PREFIX}/lib"
   '';
diff --git a/pkgs/applications/science/math/scilab-bin/default.nix b/pkgs/applications/science/math/scilab-bin/default.nix
index f6da20531385..e3ca7bef52a4 100644
--- a/pkgs/applications/science/math/scilab-bin/default.nix
+++ b/pkgs/applications/science/math/scilab-bin/default.nix
@@ -100,4 +100,4 @@ let
     '';
   };
 in
-if stdenv.isDarwin then darwin else linux
+if stdenv.hostPlatform.isDarwin then darwin else linux
diff --git a/pkgs/applications/science/math/singular/default.nix b/pkgs/applications/science/math/singular/default.nix
index 6ec1c9a2b74e..fff9c7dfaf90 100644
--- a/pkgs/applications/science/math/singular/default.nix
+++ b/pkgs/applications/science/math/singular/default.nix
@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
     latex2html
     texinfo
     texliveSmall
-  ] ++ lib.optionals stdenv.isDarwin [ getconf ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ getconf ];
   depsBuildBuild = [ buildPackages.stdenv.cc ];
 
   preAutoreconf = ''
@@ -95,7 +95,7 @@ stdenv.mkDerivation rec {
       -i '{}' ';'
   '';
 
-  hardeningDisable = lib.optional stdenv.isi686 "stackprotector";
+  hardeningDisable = lib.optional stdenv.hostPlatform.isi686 "stackprotector";
 
   doCheck = true; # very basic checks, does not test any libraries
 
diff --git a/pkgs/applications/science/math/speedcrunch/default.nix b/pkgs/applications/science/math/speedcrunch/default.nix
index 021c1bedc348..ed7339ab5677 100644
--- a/pkgs/applications/science/math/speedcrunch/default.nix
+++ b/pkgs/applications/science/math/speedcrunch/default.nix
@@ -32,6 +32,6 @@ mkDerivation rec {
     '';
     maintainers = with maintainers; [ gebner j0hax ];
     inherit (qtbase.meta) platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/science/misc/gplates/default.nix b/pkgs/applications/science/misc/gplates/default.nix
index ae7681a7a3af..72504246b6c0 100644
--- a/pkgs/applications/science/misc/gplates/default.nix
+++ b/pkgs/applications/science/misc/gplates/default.nix
@@ -80,6 +80,6 @@ in stdenv.mkDerivation (finalAttrs: {
     homepage = "https://www.gplates.org";
     license = licenses.gpl2Only;
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # FIX: this check: https://github.com/GPlates/GPlates/blob/gplates/cmake/modules/Config_h.cmake#L72
+    broken = stdenv.hostPlatform.isDarwin; # FIX: this check: https://github.com/GPlates/GPlates/blob/gplates/cmake/modules/Config_h.cmake#L72
   };
 })
diff --git a/pkgs/applications/science/misc/graphia/default.nix b/pkgs/applications/science/misc/graphia/default.nix
index a5055220e95f..88fc3a8c0e57 100644
--- a/pkgs/applications/science/misc/graphia/default.nix
+++ b/pkgs/applications/science/misc/graphia/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/graphia.x86_64-darwin
-    broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
     description = "Visualisation tool for the creation and analysis of graphs";
     homepage = "https://graphia.app";
     license = licenses.gpl3Only;
diff --git a/pkgs/applications/science/misc/openmvg/default.nix b/pkgs/applications/science/misc/openmvg/default.nix
index f622f87d2e41..a535f436ddb1 100644
--- a/pkgs/applications/science/misc/openmvg/default.nix
+++ b/pkgs/applications/science/misc/openmvg/default.nix
@@ -73,7 +73,7 @@ stdenv.mkDerivation rec {
   passthru.updateScript = nix-update-script { };
 
   meta = {
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
     description = "Library for computer-vision scientists and targeted for the Multiple View Geometry community";
     homepage = "https://openmvg.readthedocs.io/en/latest/";
     license = lib.licenses.mpl20;
diff --git a/pkgs/applications/science/misc/openmvs/default.nix b/pkgs/applications/science/misc/openmvs/default.nix
index 57c4367d2a82..689ce1ad554c 100644
--- a/pkgs/applications/science/misc/openmvs/default.nix
+++ b/pkgs/applications/science/misc/openmvs/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
   };
 
   # SSE is enabled by default
-  cmakeFlags = lib.optional (!stdenv.isx86_64) "-DOpenMVS_USE_SSE=OFF";
+  cmakeFlags = lib.optional (!stdenv.hostPlatform.isx86_64) "-DOpenMVS_USE_SSE=OFF";
 
   buildInputs = [
     boostWithZstd
diff --git a/pkgs/applications/science/misc/openrefine/default.nix b/pkgs/applications/science/misc/openrefine/default.nix
index 6d169db23b92..60615b6f0926 100644
--- a/pkgs/applications/science/misc/openrefine/default.nix
+++ b/pkgs/applications/science/misc/openrefine/default.nix
@@ -120,7 +120,7 @@ in maven.buildMavenPackage {
       fromSource
       binaryBytecode  # maven dependencies
     ];
-    broken = stdenv.isDarwin;  # builds, doesn't run
+    broken = stdenv.hostPlatform.isDarwin;  # builds, doesn't run
     mainProgram = "refine";
   };
 }
diff --git a/pkgs/applications/science/misc/reason-shell/default.nix b/pkgs/applications/science/misc/reason-shell/default.nix
index 5491593cc7f7..015b5c97ebf3 100644
--- a/pkgs/applications/science/misc/reason-shell/default.nix
+++ b/pkgs/applications/science/misc/reason-shell/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/applications/science/misc/rink/default.nix b/pkgs/applications/science/misc/rink/default.nix
index ae51d55168a9..c0b33b3cbedb 100644
--- a/pkgs/applications/science/misc/rink/default.nix
+++ b/pkgs/applications/science/misc/rink/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config installShellFiles asciidoctor ];
   buildInputs = [ ncurses ]
-    ++ (if stdenv.isDarwin then [ curl libiconv Security ] else [ openssl ]);
+    ++ (if stdenv.hostPlatform.isDarwin then [ curl libiconv Security ] else [ openssl ]);
 
   # Some tests fail and/or attempt to use internet servers.
   doCheck = false;
diff --git a/pkgs/applications/science/misc/root/5.nix b/pkgs/applications/science/misc/root/5.nix
index 80f2df0688da..62f80ee48096 100644
--- a/pkgs/applications/science/misc/root/5.nix
+++ b/pkgs/applications/science/misc/root/5.nix
@@ -35,8 +35,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ pcre python3 zlib libxml2 lz4 xz gsl xxHash libxcrypt ]
-    ++ lib.optionals (!stdenv.isDarwin) [ libX11 libXpm libXft libXext libGLU libGL ]
-    ++ lib.optionals (stdenv.isDarwin) [ Cocoa OpenGL ]
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ libX11 libXpm libXft libXext libGLU libGL ]
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ Cocoa OpenGL ]
   ;
 
   patches = [
@@ -147,7 +147,7 @@ stdenv.mkDerivation rec {
     "-Dxml=ON"
     "-Dxrootd=OFF"
   ]
-  ++ lib.optional stdenv.isDarwin "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks";
+  ++ lib.optional stdenv.hostPlatform.isDarwin "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks";
 
   setupHook = ./setup-hook.sh;
 
@@ -155,7 +155,7 @@ stdenv.mkDerivation rec {
     homepage = "https://root.cern.ch/";
     description = "Data analysis framework";
     platforms = platforms.unix;
-    broken = !stdenv.isx86_64 || stdenv.cc.isClang or false;
+    broken = !stdenv.hostPlatform.isx86_64 || stdenv.cc.isClang or false;
     maintainers = with maintainers; [ veprbl ];
     license = licenses.lgpl21;
   };
diff --git a/pkgs/applications/science/misc/root/default.nix b/pkgs/applications/science/misc/root/default.nix
index fd998f732818..98fee1747810 100644
--- a/pkgs/applications/science/misc/root/default.nix
+++ b/pkgs/applications/science/misc/root/default.nix
@@ -109,8 +109,8 @@ stdenv.mkDerivation rec {
     tbb
     xrootd
   ]
-  ++ lib.optionals (!stdenv.isDarwin) [ libX11 libXpm libXft libXext libGLU libGL ]
-  ++ lib.optionals (stdenv.isDarwin) [ Cocoa CoreSymbolication OpenGL ]
+  ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ libX11 libXpm libXft libXext libGLU libGL ]
+  ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ Cocoa CoreSymbolication OpenGL ]
   ;
 
   patches = [
@@ -149,11 +149,11 @@ stdenv.mkDerivation rec {
       -e '1iset(nlohmann_json_DIR "${nlohmann_json}/lib/cmake/nlohmann_json/")'
 
     patchShebangs build/unix/
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Eliminate impure reference to /System/Library/PrivateFrameworks
     substituteInPlace core/macosx/CMakeLists.txt \
       --replace "-F/System/Library/PrivateFrameworks " ""
-  '' + lib.optionalString (stdenv.isDarwin && lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11") ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11") ''
     MACOSX_DEPLOYMENT_TARGET=10.16
   '';
 
@@ -172,7 +172,7 @@ stdenv.mkDerivation rec {
     "-Dvdt=OFF"
   ]
   ++ lib.optional (stdenv.cc.libc != null) "-DC_INCLUDE_DIRS=${lib.getDev stdenv.cc.libc}/include"
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks"
 
     # fatal error: module map file '/nix/store/<hash>-Libsystem-osx-10.12.6/include/module.modulemap' not found
diff --git a/pkgs/applications/science/misc/simgrid/default.nix b/pkgs/applications/science/misc/simgrid/default.nix
index 37c7fb3a2a05..40202b8dbacc 100644
--- a/pkgs/applications/science/misc/simgrid/default.nix
+++ b/pkgs/applications/science/misc/simgrid/default.nix
@@ -115,6 +115,6 @@ stdenv.mkDerivation rec {
     license = licenses.lgpl2Plus;
     maintainers = with maintainers; [ mickours mpoquet ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/science/misc/tulip/default.nix b/pkgs/applications/science/misc/tulip/default.nix
index 9808a572836d..590b429e73f0 100644
--- a/pkgs/applications/science/misc/tulip/default.nix
+++ b/pkgs/applications/science/misc/tulip/default.nix
@@ -12,15 +12,15 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake wrapQtAppsHook ]
-    ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   buildInputs = [ libxml2 freetype glew libjpeg qtbase python3 ]
-    ++ lib.optionals stdenv.isDarwin [ llvmPackages.openmp ]
-    ++ lib.optionals stdenv.isLinux [ libGLU libGL ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ llvmPackages.openmp ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libGLU libGL ];
 
   qtWrapperArgs = [ ''--prefix PATH : ${lib.makeBinPath [ python3 ]}'' ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin (toString [
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin (toString [
     # fatal error: 'Python.h' file not found
     "-I${python3}/include/${python3.libPrefix}"
     # error: format string is not a string literal (potentially insecure)
diff --git a/pkgs/applications/science/molecular-dynamics/gromacs/default.nix b/pkgs/applications/science/molecular-dynamics/gromacs/default.nix
index 93cd92863283..1eed4ff7c3d6 100644
--- a/pkgs/applications/science/molecular-dynamics/gromacs/default.nix
+++ b/pkgs/applications/science/molecular-dynamics/gromacs/default.nix
@@ -83,7 +83,7 @@ in stdenv.mkDerivation rec {
     cudaPackages.cuda_cudart
     cudaPackages.libcufft
     cudaPackages.cuda_profiler_api
-  ] ++ lib.optional stdenv.isDarwin llvmPackages.openmp;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp;
 
   propagatedBuildInputs = lib.optional enableMpi mpi;
   propagatedUserEnvPkgs = lib.optional enableMpi mpi;
diff --git a/pkgs/applications/science/physics/crystfel/default.nix b/pkgs/applications/science/physics/crystfel/default.nix
index e7eb69fb4e1c..b6f8a0d6f13c 100644
--- a/pkgs/applications/science/physics/crystfel/default.nix
+++ b/pkgs/applications/science/physics/crystfel/default.nix
@@ -75,7 +75,7 @@ let
     let
       version = "7.4.0";
       src =
-        if stdenv.isDarwin then
+        if stdenv.hostPlatform.isDarwin then
           fetchurl
             {
               url = "https://www.mrc-lmb.cam.ac.uk/mosflm/mosflm/ver${builtins.replaceStrings [ "." ] [ "" ] version}/pre-built/mosflm-osx-64-noX11.zip";
@@ -86,7 +86,7 @@ let
             url = "https://www.mrc-lmb.cam.ac.uk/mosflm/mosflm/ver${builtins.replaceStrings [ "." ] [ "" ] version}/pre-built/mosflm-linux-64-noX11.zip";
             hash = "sha256:1f2qins5kaz5v6mkaclncqpirx3mlz177ywm13py9p6s9mk99g32";
           };
-      mosflmBinary = if stdenv.isDarwin then "bin/mosflm" else "mosflm-linux-64-noX11";
+      mosflmBinary = if stdenv.hostPlatform.isDarwin then "bin/mosflm" else "mosflm-linux-64-noX11";
     in
     stdenv.mkDerivation {
       pname = "mosflm";
@@ -209,9 +209,9 @@ stdenv.mkDerivation rec {
     xgandalf
     pandoc
   ] ++ lib.optionals withGui [ gtk3 gdk-pixbuf ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     argp-standalone
-  ] ++ lib.optionals (stdenv.isDarwin && !stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isAarch64) [
     memorymappingHook
   ]
   ++ lib.optionals withBitshuffle [ hdf5-external-filter-plugins ];
diff --git a/pkgs/applications/science/physics/fasthenry/default.nix b/pkgs/applications/science/physics/fasthenry/default.nix
index 6b9a73f6dd17..963828e18edc 100644
--- a/pkgs/applications/science/physics/fasthenry/default.nix
+++ b/pkgs/applications/science/physics/fasthenry/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
       SHELL="sh"
       "all"
     )
-    '' + (if stdenv.isx86_64 then ''
+    '' + (if stdenv.hostPlatform.isx86_64 then ''
     makeFlagsArray+=(
       CFLAGS="-fcommon -O -DFOUR -m64"
     );
diff --git a/pkgs/applications/science/physics/professor/default.nix b/pkgs/applications/science/physics/professor/default.nix
index 1c6c21c52fef..60a030f52821 100644
--- a/pkgs/applications/science/physics/professor/default.nix
+++ b/pkgs/applications/science/physics/professor/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   postPatch = ''
     substituteInPlace Makefile \
       --replace-fail 'pip install ' 'pip install --prefix $(out) '
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile \
       --replace-fail '-shared -o' '-shared -install_name "$(out)/$@" -o'
   '';
diff --git a/pkgs/applications/science/physics/sacrifice/default.nix b/pkgs/applications/science/physics/sacrifice/default.nix
index dbe236537139..b6b53446473f 100644
--- a/pkgs/applications/science/physics/sacrifice/default.nix
+++ b/pkgs/applications/science/physics/sacrifice/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation {
   preConfigure = ''
     substituteInPlace configure --replace HAVE_LCG=yes HAVE_LCG=no
   ''
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure --replace LIB_SUFFIX=\"so\" LIB_SUFFIX=\"dylib\"
   '';
 
@@ -29,7 +29,7 @@ stdenv.mkDerivation {
     "--with-pythia=${pythia}"
   ];
 
-  postInstall = if stdenv.isDarwin then ''
+  postInstall = if stdenv.hostPlatform.isDarwin then ''
     install_name_tool -add_rpath ${pythia}/lib "$out"/bin/run-pythia
   '' else ''
     wrapProgram $out/bin/run-pythia \
@@ -46,6 +46,6 @@ stdenv.mkDerivation {
     platforms   = lib.platforms.unix;
     maintainers = with lib.maintainers; [ veprbl ];
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/applications/science/physics/sherpa/default.nix b/pkgs/applications/science/physics/sherpa/default.nix
index 21a5ee7ec234..2dfe3f7d7bb2 100644
--- a/pkgs/applications/science/physics/sherpa/default.nix
+++ b/pkgs/applications/science/physics/sherpa/default.nix
@@ -35,6 +35,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     maintainers = with maintainers; [ veprbl ];
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/applications/science/physics/xfitter/default.nix b/pkgs/applications/science/physics/xfitter/default.nix
index 8a92c85a1383..e509f3a005f7 100644
--- a/pkgs/applications/science/physics/xfitter/default.nix
+++ b/pkgs/applications/science/physics/xfitter/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
   hardeningDisable = [ "format" ];
 
   # workaround wrong library IDs
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     ln -sv "$out/lib/xfitter/"* "$out/lib/"
   '';
 
diff --git a/pkgs/applications/science/physics/xnec2c/default.nix b/pkgs/applications/science/physics/xnec2c/default.nix
index ffdd4b6d0b07..aaff1ff40d31 100644
--- a/pkgs/applications/science/physics/xnec2c/default.nix
+++ b/pkgs/applications/science/physics/xnec2c/default.nix
@@ -38,6 +38,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
 
     # Darwin support likely to be fixed upstream in the next release
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/science/robotics/mavproxy/default.nix b/pkgs/applications/science/robotics/mavproxy/default.nix
index f86ca5f635e4..e36b3d62b696 100644
--- a/pkgs/applications/science/robotics/mavproxy/default.nix
+++ b/pkgs/applications/science/robotics/mavproxy/default.nix
@@ -25,7 +25,7 @@ buildPythonApplication rec {
     pyserial
     setuptools
     wxpython
-  ] ++ lib.optionals stdenv.isDarwin [ billiard gnureadline ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ billiard gnureadline ];
 
   # No tests
   doCheck = false;
diff --git a/pkgs/applications/search/recoll/default.nix b/pkgs/applications/search/recoll/default.nix
index 5de1166e116d..21618f8ed3ec 100644
--- a/pkgs/applications/search/recoll/default.nix
+++ b/pkgs/applications/search/recoll/default.nix
@@ -68,7 +68,7 @@ let filters = {
       perl = perl.passthru.withPackages (p: [ p.ImageExifTool ]);
     };
     filterPath = lib.makeBinPath (map lib.getBin (builtins.attrValues filters));
-    useInotify = if stdenv.isLinux then "true" else "false";
+    useInotify = if stdenv.hostPlatform.isLinux then "true" else "false";
 in
 
 mkDerivation rec {
@@ -138,7 +138,7 @@ mkDerivation rec {
     file
   ] ++ lib.optionals withGui [
     qtbase
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ];
 
@@ -167,15 +167,15 @@ mkDerivation rec {
       --prefix PYTHONPATH : $out/${python3Packages.python.sitePackages}
     wrapProgram $out/share/recoll/filters/rclimg \
       --prefix PERL5LIB : "${with perlPackages; makeFullPerlPath [ ImageExifTool ]}"
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace  $f --replace '"lyx"' '"${lib.getBin lyx}/bin/lyx"'
-  '' + lib.optionalString (stdenv.isDarwin && withGui) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && withGui) ''
     mkdir $out/Applications
     mv $out/bin/recoll.app $out/Applications
   '';
 
   # create symlink after fixup to prevent double wrapping of recoll
-  postFixup = lib.optionalString (stdenv.isDarwin && withGui) ''
+  postFixup = lib.optionalString (stdenv.hostPlatform.isDarwin && withGui) ''
     ln -s ../Applications/recoll.app/Contents/MacOS/recoll $out/bin/recoll
   '';
 
diff --git a/pkgs/applications/system/glances/default.nix b/pkgs/applications/system/glances/default.nix
index 6d8899440d4a..ff8b4c310662 100644
--- a/pkgs/applications/system/glances/default.nix
+++ b/pkgs/applications/system/glances/default.nix
@@ -40,14 +40,14 @@ buildPythonApplication rec {
   # CoreFoundation. This issues was solved for binaries but for interpreted
   # scripts a workaround below is still required.
   # Relevant: https://github.com/NixOS/nixpkgs/issues/24693
-  makeWrapperArgs = lib.optionals stdenv.isDarwin [
+  makeWrapperArgs = lib.optionals stdenv.hostPlatform.isDarwin [
     "--set"
     "DYLD_FRAMEWORK_PATH"
     "/System/Library/Frameworks"
   ];
 
   doCheck = true;
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export DYLD_FRAMEWORK_PATH=/System/Library/Frameworks
   '';
 
@@ -68,7 +68,7 @@ buildPythonApplication rec {
     jinja2
     orjson
     prometheus-client
-  ] ++ lib.optional stdenv.isLinux hddtemp;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux hddtemp;
 
   meta = {
     homepage = "https://nicolargo.github.io/glances/";
diff --git a/pkgs/applications/terminal-emulators/alacritty/default.nix b/pkgs/applications/terminal-emulators/alacritty/default.nix
index 58e527cc50a9..33691aaef491 100644
--- a/pkgs/applications/terminal-emulators/alacritty/default.nix
+++ b/pkgs/applications/terminal-emulators/alacritty/default.nix
@@ -35,7 +35,7 @@ let
     expat
     fontconfig
     freetype
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libGL
     xorg.libX11
     xorg.libXcursor
@@ -71,7 +71,7 @@ rustPlatform.buildRustPackage rec {
   ];
 
   buildInputs = rpathLibs
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     CoreGraphics
     CoreServices
@@ -83,7 +83,7 @@ rustPlatform.buildRustPackage rec {
 
   outputs = [ "out" "terminfo" ];
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace alacritty/src/config/ui_config.rs \
       --replace xdg-open ${xdg-utils}/bin/xdg-open
   '';
@@ -91,7 +91,7 @@ rustPlatform.buildRustPackage rec {
   checkFlags = [ "--skip=term::test::mock_term" ]; # broken on aarch64
 
   postInstall = (
-    if stdenv.isDarwin then ''
+    if stdenv.hostPlatform.isDarwin then ''
       mkdir $out/Applications
       cp -r extra/osx/Alacritty.app $out/Applications
       ln -s $out/bin $out/Applications/Alacritty.app/Contents/MacOS
diff --git a/pkgs/applications/terminal-emulators/contour/default.nix b/pkgs/applications/terminal-emulators/contour/default.nix
index a255b2fb99db..f01c47afdd36 100644
--- a/pkgs/applications/terminal-emulators/contour/default.nix
+++ b/pkgs/applications/terminal-emulators/contour/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation (final: {
     file
     wrapQtAppsHook
     installShellFiles
-  ] ++ lib.optionals stdenv.isDarwin [ sigtool ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ sigtool ];
 
   buildInputs = [
     boxed-cpp
@@ -67,21 +67,21 @@ stdenv.mkDerivation (final: {
     range-v3
     yaml-cpp
   ]
-  ++ lib.optionals stdenv.isLinux [ libutempter ]
-  ++ lib.optionals stdenv.isDarwin [ utmp ];
+  ++ lib.optionals stdenv.hostPlatform.isLinux [ libutempter ]
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ utmp ];
 
   cmakeFlags = [ "-DCONTOUR_QT_VERSION=6" ];
 
   postInstall = ''
     mkdir -p $out/nix-support $terminfo/share
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/Applications
     installShellCompletion --zsh $out/contour.app/Contents/Resources/shell-integration/shell-integration.zsh
     installShellCompletion --fish $out/contour.app/Contents/Resources/shell-integration/shell-integration.fish
     cp -r $out/contour.app/Contents/Resources/terminfo $terminfo/share
     mv $out/contour.app $out/Applications
     ln -s $out/bin $out/Applications/contour.app/Contents/MacOS
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     mv $out/share/terminfo $terminfo/share/
     installShellCompletion --zsh $out/share/contour/shell-integration/shell-integration.zsh
     installShellCompletion --fish $out/share/contour/shell-integration/shell-integration.fish
diff --git a/pkgs/applications/terminal-emulators/cool-retro-term/default.nix b/pkgs/applications/terminal-emulators/cool-retro-term/default.nix
index 8a33d222855e..c2a871085831 100644
--- a/pkgs/applications/terminal-emulators/cool-retro-term/default.nix
+++ b/pkgs/applications/terminal-emulators/cool-retro-term/default.nix
@@ -40,7 +40,7 @@ mkDerivation rec {
     mv $out/usr/share $out/share
     mv $out/usr/bin $out/bin
     rmdir $out/usr
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     ln -s $out/bin/cool-retro-term.app/Contents/MacOS/cool-retro-term $out/bin/cool-retro-term
   '';
 
diff --git a/pkgs/applications/terminal-emulators/kitty/default.nix b/pkgs/applications/terminal-emulators/kitty/default.nix
index 162d3cd583fd..cf5614d399a5 100644
--- a/pkgs/applications/terminal-emulators/kitty/default.nix
+++ b/pkgs/applications/terminal-emulators/kitty/default.nix
@@ -57,7 +57,7 @@ buildPythonApplication rec {
     librsync
     openssl.dev
     xxHash
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
     Kernel
     UniformTypeIdentifiers
@@ -65,9 +65,9 @@ buildPythonApplication rec {
     libpng
     python3
     zlib
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     Libsystem
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     fontconfig libunistring libcanberra libX11
     libXrandr libXinerama libXcursor libxkbcommon libXi libXext
     wayland-protocols wayland dbus libGL
@@ -84,10 +84,10 @@ buildPythonApplication rec {
     sphinx-inline-tabs
     go
     fontconfig
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     imagemagick
     libicns  # For the png2icns tool.
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     wayland-scanner
   ];
 
@@ -141,8 +141,8 @@ buildPythonApplication rec {
     mkdir ./fonts/
     cp "${(nerdfonts.override {fonts = ["NerdFontsSymbolsOnly"];})}/share/fonts/truetype/NerdFonts/SymbolsNerdFontMono-Regular.ttf" ./fonts/
 
-    ${ lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) "export MACOSX_DEPLOYMENT_TARGET=11" }
-    ${if stdenv.isDarwin then ''
+    ${ lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) "export MACOSX_DEPLOYMENT_TARGET=11" }
+    ${if stdenv.hostPlatform.isDarwin then ''
       ${python.pythonOnBuildForHost.interpreter} setup.py build ${darwinOptions}
       make docs
       ${python.pythonOnBuildForHost.interpreter} setup.py kitty.app ${darwinOptions}
@@ -165,13 +165,13 @@ buildPythonApplication rec {
     bashInteractive
     zsh
     fish
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     # integration tests need sudo
     sudo
   ];
 
   # skip failing tests due to darwin sandbox
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace kitty_tests/file_transmission.py \
       --replace test_file_get dont_test_file_get \
       --replace test_path_mapping_receive dont_test_path_mapping_receive \
@@ -209,7 +209,7 @@ buildPythonApplication rec {
     runHook preInstall
     mkdir -p "$out"
     mkdir -p "$kitten/bin"
-    ${if stdenv.isDarwin then ''
+    ${if stdenv.hostPlatform.isDarwin then ''
     mkdir "$out/bin"
     ln -s ../Applications/kitty.app/Contents/MacOS/kitty "$out/bin/kitty"
     ln -s ../Applications/kitty.app/Contents/MacOS/kitten "$out/bin/kitten"
@@ -232,7 +232,7 @@ buildPythonApplication rec {
       --fish <("$out/bin/kitty" +complete setup fish2) \
       --zsh  <("$out/bin/kitty" +complete setup zsh)
 
-    terminfo_src=${if stdenv.isDarwin then
+    terminfo_src=${if stdenv.hostPlatform.isDarwin then
       ''"$out/Applications/kitty.app/Contents/Resources/terminfo"''
       else
       "$out/share/terminfo"}
@@ -249,7 +249,7 @@ buildPythonApplication rec {
   '';
 
   passthru = {
-    tests = lib.optionalAttrs stdenv.isLinux {
+    tests = lib.optionalAttrs stdenv.hostPlatform.isLinux {
       default = nixosTests.terminal-emulators.kitty;
     };
     updateScript = nix-update-script {};
diff --git a/pkgs/applications/terminal-emulators/mlterm/default.nix b/pkgs/applications/terminal-emulators/mlterm/default.nix
index 28f027401bd7..dcf581f27a80 100644
--- a/pkgs/applications/terminal-emulators/mlterm/default.nix
+++ b/pkgs/applications/terminal-emulators/mlterm/default.nix
@@ -27,8 +27,8 @@
   # documentd in `./configure --help`, and it is reported here:
   # https://github.com/arakiken/mlterm/issues/73
   fb = false;
-  quartz = stdenv.isDarwin;
-  wayland = stdenv.isLinux;
+  quartz = stdenv.hostPlatform.isDarwin;
+  wayland = stdenv.hostPlatform.isLinux;
   sdl2 = true;
 }
 , libxkbcommon
@@ -59,16 +59,16 @@
   mlfc = true;
 }
 # Whether to enable the X window system
-, enableX11 ? stdenv.isLinux
+, enableX11 ? stdenv.hostPlatform.isLinux
 # Most of the input methods and other build features are enabled by default,
 # the following attribute set can be used to disable some of them. It's parsed
 # when we set `configureFlags`. If you find other configure Flags that require
 # dependencies, it'd be nice to make that contribution here.
 , enableFeatures ? {
-  uim = !stdenv.isDarwin;
-  ibus = !stdenv.isDarwin;
-  fcitx = !stdenv.isDarwin;
-  m17n = !stdenv.isDarwin;
+  uim = !stdenv.hostPlatform.isDarwin;
+  ibus = !stdenv.hostPlatform.isDarwin;
+  fcitx = !stdenv.hostPlatform.isDarwin;
+  m17n = !stdenv.hostPlatform.isDarwin;
   ssh2 = true;
   bidi = true;
   # Open Type layout support, (substituting glyphs with opentype fonts)
@@ -185,7 +185,7 @@ in stdenv.mkDerivation (finalAttrs: {
     install -D contrib/icon/mlterm-icon.svg "$out/share/icons/hicolor/scalable/apps/mlterm.svg"
     install -D contrib/icon/mlterm-icon-gnome2.png "$out/share/icons/hicolor/48x48/apps/mlterm.png"
     install -D -t $out/share/applications $desktopItem/share/applications/*
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications/
     cp -a cocoa/mlterm.app $out/Applications/
     install $out/bin/mlterm -Dt $out/Applications/mlterm.app/Contents/MacOS/
diff --git a/pkgs/applications/terminal-emulators/rio/default.nix b/pkgs/applications/terminal-emulators/rio/default.nix
index 00c1e9aa1ffb..136bbcd49436 100644
--- a/pkgs/applications/terminal-emulators/rio/default.nix
+++ b/pkgs/applications/terminal-emulators/rio/default.nix
@@ -17,21 +17,21 @@
 , vulkan-loader
 , libxkbcommon
 
-, withX11 ? !stdenv.isDarwin
+, withX11 ? !stdenv.hostPlatform.isDarwin
 , libX11
 , libXcursor
 , libXi
 , libXrandr
 , libxcb
 
-, withWayland ? !stdenv.isDarwin
+, withWayland ? !stdenv.hostPlatform.isDarwin
 , wayland
 
 , testers
 , rio
 }:
 let
-  rlinkLibs = if stdenv.isDarwin then [
+  rlinkLibs = if stdenv.hostPlatform.isDarwin then [
     darwin.libobjc
     darwin.apple_sdk_11_0.frameworks.AppKit
     darwin.apple_sdk_11_0.frameworks.AVFoundation
@@ -68,7 +68,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [
     ncurses
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     cmake
     pkg-config
     autoPatchelfHook
@@ -99,7 +99,7 @@ rustPlatform.buildRustPackage rec {
     tic -xe rio,rio-direct -o "$terminfo/share/terminfo" misc/rio.terminfo
     mkdir -p $out/nix-support
     echo "$terminfo" >> $out/nix-support/propagated-user-env-packages
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/Applications/
     mv misc/osx/Rio.app/ $out/Applications/
     mkdir $out/Applications/Rio.app/Contents/MacOS/
@@ -130,6 +130,6 @@ rustPlatform.buildRustPackage rec {
     # stderr:
     # thread 'main' panicked at corcovado/src/sys/unix/eventedfd.rs:24:16:
     # called `Result::unwrap()` on an `Err` value: Os { code: 1, kind: PermissionDenied, message: "Operation not permitted" }
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/terminal-emulators/rxvt-unicode/default.nix b/pkgs/applications/terminal-emulators/rxvt-unicode/default.nix
index f28694db2949..a39099cc4bd4 100644
--- a/pkgs/applications/terminal-emulators/rxvt-unicode/default.nix
+++ b/pkgs/applications/terminal-emulators/rxvt-unicode/default.nix
@@ -76,7 +76,7 @@ stdenv.mkDerivation {
     url = "https://github.com/exg/rxvt-unicode/commit/16634bc8dd5fc4af62faf899687dfa8f27768d15.patch";
     excludes = [ "Changes" ];
     sha256 = "sha256-JVqzYi3tcWIN2j5JByZSztImKqbbbB3lnfAwUXrumHM=";
-  }) ++ lib.optional stdenv.isDarwin ./patches/makefile-phony.patch;
+  }) ++ lib.optional stdenv.hostPlatform.isDarwin ./patches/makefile-phony.patch;
 
   configureFlags = [
     "--with-terminfo=${placeholder "terminfo"}/share/terminfo"
diff --git a/pkgs/applications/terminal-emulators/st/default.nix b/pkgs/applications/terminal-emulators/st/default.nix
index 72a6835ff4aa..676ef292def1 100644
--- a/pkgs/applications/terminal-emulators/st/default.nix
+++ b/pkgs/applications/terminal-emulators/st/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation (finalAttrs: {
     (writeText "config.def.h" conf);
 
   postPatch = lib.optionalString (conf != null) "cp ${finalAttrs.configFile} config.def.h"
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace config.mk --replace "-lrt" ""
   '';
 
diff --git a/pkgs/applications/terminal-emulators/syncterm/default.nix b/pkgs/applications/terminal-emulators/syncterm/default.nix
index 36a02e08bbd5..60b172184fc9 100644
--- a/pkgs/applications/terminal-emulators/syncterm/default.nix
+++ b/pkgs/applications/terminal-emulators/syncterm/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
 
     "-Wno-unused-result"
     "-Wformat-overflow=0"
-  ] ++ (lib.optionals stdenv.isLinux [
+  ] ++ (lib.optionals stdenv.hostPlatform.isLinux [
     "-DUSE_ALSA_SOUND" # Don't use OSS for beeps.
   ]);
   makeFlags = [
@@ -38,12 +38,12 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoPatchelfHook pkg-config SDL2 perl unzip ]; # SDL2 for `sdl2-config`.
   buildInputs = [ ncurses SDL2 ]
-    ++ (lib.optional stdenv.isLinux alsa-lib);
+    ++ (lib.optional stdenv.hostPlatform.isLinux alsa-lib);
   runtimeDependencies = [ ncurses SDL2 ]; # Both of these are dlopen()'ed at runtime.
 
   meta = with lib; {
     # error: unsupported option '-fsanitize=safe-stack' for target 'x86_64-apple-darwin'
-    broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
     homepage = "https://syncterm.bbsdev.net/";
     description = "BBS terminal emulator";
     mainProgram = "syncterm";
diff --git a/pkgs/applications/terminal-emulators/termite/default.nix b/pkgs/applications/terminal-emulators/termite/default.nix
index 4acc8263ce86..3dc6d484d2d3 100644
--- a/pkgs/applications/terminal-emulators/termite/default.nix
+++ b/pkgs/applications/terminal-emulators/termite/default.nix
@@ -47,7 +47,7 @@ in stdenv.mkDerivation rec {
       url = "https://github.com/thestinger/termite/commit/7e9a93b421b9596f8980645a46ac2ad5468dac06.patch";
       sha256 = "0vph2m5919f7w1xnc8i6z0j44clsm1chxkfg7l71nahxyfw5yh4j";
     })
-  ] ++ lib.optional stdenv.isDarwin ./remove_ldflags_macos.patch;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin ./remove_ldflags_macos.patch;
 
   makeFlags = [ "VERSION=v${version}" "PREFIX=" "DESTDIR=$(out)" ];
 
diff --git a/pkgs/applications/terminal-emulators/wezterm/default.nix b/pkgs/applications/terminal-emulators/wezterm/default.nix
index 4f710d61c20a..68391fc4dc7f 100644
--- a/pkgs/applications/terminal-emulators/wezterm/default.nix
+++ b/pkgs/applications/terminal-emulators/wezterm/default.nix
@@ -63,12 +63,12 @@ rustPlatform.buildRustPackage rec {
     ncurses # tic for terminfo
     pkg-config
     python3
-  ] ++ lib.optional stdenv.isDarwin perl;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin perl;
 
   buildInputs = [
     fontconfig
     zlib
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libX11
     libxcb
     libxkbcommon
@@ -78,7 +78,7 @@ rustPlatform.buildRustPackage rec {
     xcbutilimage
     xcbutilkeysyms
     xcbutilwm # contains xcb-ewmh among others
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
     CoreGraphics
     Foundation
@@ -89,7 +89,7 @@ rustPlatform.buildRustPackage rec {
 
   buildFeatures = [ "distro-defaults" ];
 
-  env.NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-framework System";
+  env.NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-framework System";
 
   postInstall = ''
     mkdir -p $out/nix-support
@@ -108,12 +108,12 @@ rustPlatform.buildRustPackage rec {
     install -Dm644 assets/wezterm-nautilus.py -t $out/share/nautilus-python/extensions
   '';
 
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf \
       --add-needed "${libGL}/lib/libEGL.so.1" \
       --add-needed "${vulkan-loader}/lib/libvulkan.so.1" \
       $out/bin/wezterm-gui
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p "$out/Applications"
     OUT_APP="$out/Applications/WezTerm.app"
     cp -r assets/macos/WezTerm.app "$OUT_APP"
diff --git a/pkgs/applications/terminal-emulators/x3270/default.nix b/pkgs/applications/terminal-emulators/x3270/default.nix
index 2e901e5af876..45b08bd10f66 100644
--- a/pkgs/applications/terminal-emulators/x3270/default.nix
+++ b/pkgs/applications/terminal-emulators/x3270/default.nix
@@ -36,9 +36,9 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-gcC6REfZentIPEDhGznUSYu8mvVfpPeMz/Bks+N43Fk=";
   };
 
-  buildFlags = lib.optional stdenv.isLinux "unix";
+  buildFlags = lib.optional stdenv.hostPlatform.isLinux "unix";
 
-  configureFlags = lib.optionals stdenv.isDarwin [
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "--enable-c3270"
     "--enable-pr3270"
     "--enable-s3270"
@@ -70,7 +70,7 @@ stdenv.mkDerivation rec {
     expat
     openssl
     readline
-  ] ++ lib.optionals stdenv.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
 
   meta = with lib; {
     description = "IBM 3270 terminal emulator for the X Window System";
diff --git a/pkgs/applications/version-management/bcompare/default.nix b/pkgs/applications/version-management/bcompare/default.nix
index 33b4cb0f90b5..5a60f9a1d546 100644
--- a/pkgs/applications/version-management/bcompare/default.nix
+++ b/pkgs/applications/version-management/bcompare/default.nix
@@ -93,6 +93,6 @@ let
     mainProgram = "bcompare";
   };
 in
-if stdenv.isDarwin
+if stdenv.hostPlatform.isDarwin
 then darwin
 else linux
diff --git a/pkgs/applications/version-management/blackbox/default.nix b/pkgs/applications/version-management/blackbox/default.nix
index c98ff367c668..e5be040f6a25 100644
--- a/pkgs/applications/version-management/blackbox/default.nix
+++ b/pkgs/applications/version-management/blackbox/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ gnupg ];
 
   # https://github.com/NixOS/nixpkgs/issues/134445
-  doCheck = !stdenv.isDarwin && stdenv.isx86_64;
+  doCheck = !stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
 
   nativeCheckInputs = [
     expect
diff --git a/pkgs/applications/version-management/cvs/default.nix b/pkgs/applications/version-management/cvs/default.nix
index 20a38f9f8e8c..7ec801503f76 100644
--- a/pkgs/applications/version-management/cvs/default.nix
+++ b/pkgs/applications/version-management/cvs/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     "AR=${stdenv.cc.targetPrefix}ar"
   ];
 
-  env = lib.optionalAttrs (stdenv.isDarwin && stdenv.cc.isClang) {
+  env = lib.optionalAttrs (stdenv.hostPlatform.isDarwin && stdenv.cc.isClang) {
     NIX_CFLAGS_COMPILE = "-Wno-implicit-function-declaration";
   };
 
diff --git a/pkgs/applications/version-management/delta/default.nix b/pkgs/applications/version-management/delta/default.nix
index d724d4f2bf46..76ace5026e68 100644
--- a/pkgs/applications/version-management/delta/default.nix
+++ b/pkgs/applications/version-management/delta/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     oniguruma
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Foundation
   ];
 
@@ -49,7 +49,7 @@ rustPlatform.buildRustPackage rec {
   # https://github.com/dandavison/delta/issues/1660
   dontUseCargoParallelTests = true;
 
-  checkFlags = lib.optionals stdenv.isDarwin [
+  checkFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     # This test tries to read /etc/passwd, which fails with the sandbox
     # enabled on Darwin
     "--skip=test_diff_real_files"
diff --git a/pkgs/applications/version-management/fnc/default.nix b/pkgs/applications/version-management/fnc/default.nix
index b52314180816..ec5ade218f10 100644
--- a/pkgs/applications/version-management/fnc/default.nix
+++ b/pkgs/applications/version-management/fnc/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation (finalAttrs: {
   env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.cc.isGNU [
     # Needed with GCC 12
     "-Wno-error=maybe-uninitialized"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # error: 'strtonum' is only available on macOS 11.0 or newer
     "-Wno-error=unguarded-availability-new"
   ]);
diff --git a/pkgs/applications/version-management/fossil/default.nix b/pkgs/applications/version-management/fossil/default.nix
index b1b828d47959..9443c1e9cdea 100644
--- a/pkgs/applications/version-management/fossil/default.nix
+++ b/pkgs/applications/version-management/fossil/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ installShellFiles tcl tcllib ];
 
   buildInputs = [ zlib openssl readline which ed ]
-    ++ lib.optional stdenv.isDarwin libiconv
+    ++ lib.optional stdenv.hostPlatform.isDarwin libiconv
     ++ lib.optional (!withInternalSqlite) sqlite;
 
   enableParallelBuilding = true;
diff --git a/pkgs/applications/version-management/gfold/default.nix b/pkgs/applications/version-management/gfold/default.nix
index fb8cccdda1bd..299ea9fb6ba4 100644
--- a/pkgs/applications/version-management/gfold/default.nix
+++ b/pkgs/applications/version-management/gfold/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage {
 
   cargoHash = "sha256-idzw5dfCCvujvYr7DG0oOzQUIcbACtiIZLoA4MEClzY=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     Security
   ];
diff --git a/pkgs/applications/version-management/git-absorb/default.nix b/pkgs/applications/version-management/git-absorb/default.nix
index 49d4a0a67ad2..8679f2842f9d 100644
--- a/pkgs/applications/version-management/git-absorb/default.nix
+++ b/pkgs/applications/version-management/git-absorb/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   cargoHash = "sha256-Y/0In33y4mVTaE9yoBZ/3tRWcsSKgGjTCSHdjScNEj0=";
 
diff --git a/pkgs/applications/version-management/git-branchless/default.nix b/pkgs/applications/version-management/git-branchless/default.nix
index d3d4efd2478b..0e83d17d33a7 100644
--- a/pkgs/applications/version-management/git-branchless/default.nix
+++ b/pkgs/applications/version-management/git-branchless/default.nix
@@ -34,7 +34,7 @@ rustPlatform.buildRustPackage rec {
       openssl
       sqlite
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       Security
       SystemConfiguration
       libiconv
diff --git a/pkgs/applications/version-management/git-cinnabar/default.nix b/pkgs/applications/version-management/git-cinnabar/default.nix
index 2d97b41cdd04..84a34601d40f 100644
--- a/pkgs/applications/version-management/git-cinnabar/default.nix
+++ b/pkgs/applications/version-management/git-cinnabar/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation (finalAttrs: {
     curl
     zlib
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     CoreServices
   ];
diff --git a/pkgs/applications/version-management/git-cliff/default.nix b/pkgs/applications/version-management/git-cliff/default.nix
index 92660f32267e..25bcf4f1ca7c 100644
--- a/pkgs/applications/version-management/git-cliff/default.nix
+++ b/pkgs/applications/version-management/git-cliff/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
   # attempts to run the program on .git in src which is not deterministic
   doCheck = false;
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security SystemConfiguration
   ];
 
diff --git a/pkgs/applications/version-management/git-cola/default.nix b/pkgs/applications/version-management/git-cola/default.nix
index c1c909e8827f..fac196e9ad0c 100644
--- a/pkgs/applications/version-management/git-cola/default.nix
+++ b/pkgs/applications/version-management/git-cola/default.nix
@@ -20,7 +20,7 @@ python3Packages.buildPythonApplication rec {
     hash = "sha256-8OErZ6uKTWE245BoBu9lQyTLA43DfWaYDv3wbPWaufg=";
   };
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     qt5.qtwayland
   ];
 
@@ -47,7 +47,7 @@ python3Packages.buildPythonApplication rec {
   disabledTestPaths = [
     "qtpy/"
     "contrib/win32"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "cola/inotify.py"
   ];
 
diff --git a/pkgs/applications/version-management/git-credential-keepassxc/default.nix b/pkgs/applications/version-management/git-credential-keepassxc/default.nix
index 5f4f7c6daf71..3a85cff455b8 100644
--- a/pkgs/applications/version-management/git-credential-keepassxc/default.nix
+++ b/pkgs/applications/version-management/git-credential-keepassxc/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-jBUp0jes4wtr8cmqceEBb6noqGkJUHbIfYgWOw5KMF4=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ DiskArbitration Foundation ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ DiskArbitration Foundation ];
 
   buildFeatures = []
     ++ lib.optional withNotification "notification"
diff --git a/pkgs/applications/version-management/git-dive/default.nix b/pkgs/applications/version-management/git-dive/default.nix
index c0209c38cfa9..b80397e142bf 100644
--- a/pkgs/applications/version-management/git-dive/default.nix
+++ b/pkgs/applications/version-management/git-dive/default.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
     libgit2
     oniguruma
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/applications/version-management/git-gone/default.nix b/pkgs/applications/version-management/git-gone/default.nix
index 51822966e6e6..1cc039a09fc6 100644
--- a/pkgs/applications/version-management/git-gone/default.nix
+++ b/pkgs/applications/version-management/git-gone/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   postInstall = ''
     installManPage git-gone.1
diff --git a/pkgs/applications/version-management/git-graph/default.nix b/pkgs/applications/version-management/git-graph/default.nix
index 016892892247..e801cb0e23bf 100644
--- a/pkgs/applications/version-management/git-graph/default.nix
+++ b/pkgs/applications/version-management/git-graph/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
     description = "Command line tool to show clear git graphs arranged for your branching model";
     homepage = "https://github.com/mlange-42/git-graph";
     license = licenses.mit;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ cafkafk ];
     mainProgram = "git-graph";
   };
diff --git a/pkgs/applications/version-management/git-ignore/default.nix b/pkgs/applications/version-management/git-ignore/default.nix
index 1210e31894e1..12f4f02fd0a2 100644
--- a/pkgs/applications/version-management/git-ignore/default.nix
+++ b/pkgs/applications/version-management/git-ignore/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
     installShellFiles
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/applications/version-management/git-interactive-rebase-tool/default.nix b/pkgs/applications/version-management/git-interactive-rebase-tool/default.nix
index 6019e2eb7a4b..835b6ddf8514 100644
--- a/pkgs/applications/version-management/git-interactive-rebase-tool/default.nix
+++ b/pkgs/applications/version-management/git-interactive-rebase-tool/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-9pUUKxPpyoX9f10ZiLWsol2rv66WzQqwa6VubRTrT9Y=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security ];
 
   # Compilation during tests fails if this env var is not set.
   preCheck = "export GIRT_BUILD_GIT_HASH=${version}";
diff --git a/pkgs/applications/version-management/git-mit/default.nix b/pkgs/applications/version-management/git-mit/default.nix
index 067ef1eb087d..2dc3ab74a05d 100644
--- a/pkgs/applications/version-management/git-mit/default.nix
+++ b/pkgs/applications/version-management/git-mit/default.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage {
     libgit2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
   ];
 
diff --git a/pkgs/applications/version-management/git-nomad/default.nix b/pkgs/applications/version-management/git-nomad/default.nix
index 941b84b68fcc..566a032f9b20 100644
--- a/pkgs/applications/version-management/git-nomad/default.nix
+++ b/pkgs/applications/version-management/git-nomad/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-7CZC29y9dLpyanolO+epKd0KwmRc1iGY+sPM9f/j5hk=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/applications/version-management/git-quickfix/default.nix b/pkgs/applications/version-management/git-quickfix/default.nix
index 9bc7e678d3ed..a9382ee0cb39 100644
--- a/pkgs/applications/version-management/git-quickfix/default.nix
+++ b/pkgs/applications/version-management/git-quickfix/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
   doCheck = false;
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     SystemConfiguration
     libiconv
diff --git a/pkgs/applications/version-management/git-radar/default.nix b/pkgs/applications/version-management/git-radar/default.nix
index 1c19381c1bb1..59ec4b61d85c 100644
--- a/pkgs/applications/version-management/git-radar/default.nix
+++ b/pkgs/applications/version-management/git-radar/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     mkdir -p $out/bin
     cp git-radar fetch.sh prompt.bash prompt.zsh radar-base.sh $out
     ln -s $out/git-radar $out/bin
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       wrapProgram $out/git-radar --prefix PATH : ${lib.makeBinPath [ coreutils-prefixed ]}
     ''}
   '';
diff --git a/pkgs/applications/version-management/git-series/default.nix b/pkgs/applications/version-management/git-series/default.nix
index 9f20e7cab7b8..86277614bc4c 100644
--- a/pkgs/applications/version-management/git-series/default.nix
+++ b/pkgs/applications/version-management/git-series/default.nix
@@ -28,14 +28,14 @@ rustPlatform.buildRustPackage {
   nativeBuildInputs = [
     pkg-config
     installShellFiles
-  ] ++ lib.optionals stdenv.isDarwin [ curl ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ curl ];
 
   buildInputs = [
     libgit2
     libssh2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [ curl ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ curl ];
 
   env = {
     LIBGIT2_SYS_USE_PKG_CONFIG = true;
diff --git a/pkgs/applications/version-management/git-stack/default.nix b/pkgs/applications/version-management/git-stack/default.nix
index d9792654a94b..67893b122d06 100644
--- a/pkgs/applications/version-management/git-stack/default.nix
+++ b/pkgs/applications/version-management/git-stack/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-MEhUmy4ijR/zHm/qMt4PqNGYnCfIgjNaL9SlMmXCMmc=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/applications/version-management/git-sync/default.nix b/pkgs/applications/version-management/git-sync/default.nix
index 07fa41a72637..01ac29cf8c56 100644
--- a/pkgs/applications/version-management/git-sync/default.nix
+++ b/pkgs/applications/version-management/git-sync/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
     git
     gnugrep
     gnused
-  ] ++ lib.optionals stdenv.isLinux [ inotify-tools ]);
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ inotify-tools ]);
 
   postFixup = ''
     wrap_path="${wrapperPath}":$out/bin
diff --git a/pkgs/applications/version-management/git-trim/default.nix b/pkgs/applications/version-management/git-trim/default.nix
index a387ec706718..60db7f8ee71e 100644
--- a/pkgs/applications/version-management/git-trim/default.nix
+++ b/pkgs/applications/version-management/git-trim/default.nix
@@ -37,7 +37,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl libgit2 ]
-    ++ lib.optionals stdenv.isDarwin [ IOKit CoreFoundation Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit CoreFoundation Security ];
 
   postInstall = ''
     install -Dm644 -t $out/share/man/man1/ docs/git-trim.1
diff --git a/pkgs/applications/version-management/git-workspace/default.nix b/pkgs/applications/version-management/git-workspace/default.nix
index 9418c7d20e58..8ed00127fdbb 100644
--- a/pkgs/applications/version-management/git-workspace/default.nix
+++ b/pkgs/applications/version-management/git-workspace/default.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security ];
 
   passthru = {
     updateScript = nix-update-script { };
diff --git a/pkgs/applications/version-management/git/default.nix b/pkgs/applications/version-management/git/default.nix
index dd1b96c29a8c..3d7f96bb5fe0 100644
--- a/pkgs/applications/version-management/git/default.nix
+++ b/pkgs/applications/version-management/git/default.nix
@@ -7,7 +7,7 @@
 , svnSupport ? false, subversionClient, perlLibs, smtpPerlLibs
 , perlSupport ? stdenv.buildPlatform == stdenv.hostPlatform
 , nlsSupport ? true
-, osxkeychainSupport ? stdenv.isDarwin
+, osxkeychainSupport ? stdenv.hostPlatform.isDarwin
 , guiSupport ? false
 , withManual ? true
 , pythonSupport ? true
@@ -20,11 +20,11 @@
 , gzip # needed at runtime by gitweb.cgi
 , withSsh ? false
 , sysctl
-, doInstallCheck ? !stdenv.isDarwin  # extremely slow on darwin
+, doInstallCheck ? !stdenv.hostPlatform.isDarwin  # extremely slow on darwin
 , tests
 }:
 
-assert osxkeychainSupport -> stdenv.isDarwin;
+assert osxkeychainSupport -> stdenv.hostPlatform.isDarwin;
 assert sendEmailSupport -> perlSupport;
 assert svnSupport -> perlSupport;
 
@@ -59,7 +59,7 @@ stdenv.mkDerivation (finalAttrs: {
     ./installCheck-path.patch
   ] ++ lib.optionals withSsh [
     ./ssh-path.patch
-  ] ++ lib.optionals (guiSupport && stdenv.isDarwin) [
+  ] ++ lib.optionals (guiSupport && stdenv.hostPlatform.isDarwin) [
     # Needed to workaround an issue in macOS where gitk shows a empty window
     # https://github.com/Homebrew/homebrew-core/issues/68798
     # https://github.com/git/git/pull/944
@@ -87,16 +87,16 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ gettext perlPackages.perl makeWrapper pkg-config ]
     ++ lib.optionals withManual [ asciidoc texinfo xmlto docbook2x
          docbook_xsl docbook_xml_dtd_45 libxslt ];
-  buildInputs = [ curl openssl zlib expat cpio (if stdenv.isFreeBSD then libiconvReal else libiconv) bash ]
+  buildInputs = [ curl openssl zlib expat cpio (if stdenv.hostPlatform.isFreeBSD then libiconvReal else libiconv) bash ]
     ++ lib.optionals perlSupport [ perlPackages.perl ]
     ++ lib.optionals guiSupport [tcl tk]
     ++ lib.optionals withpcre2 [ pcre2 ]
-    ++ lib.optionals stdenv.isDarwin [ Security CoreServices ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security CoreServices ]
     ++ lib.optionals withLibsecret [ glib libsecret ];
 
   # required to support pthread_cancel()
   NIX_LDFLAGS = lib.optionalString (stdenv.cc.isGNU && stdenv.hostPlatform.libc == "glibc") "-lgcc_s"
-              + lib.optionalString (stdenv.isFreeBSD) "-lthr";
+              + lib.optionalString (stdenv.hostPlatform.isFreeBSD) "-lthr";
 
   configureFlags = [
     "ac_cv_prog_CURL_CONFIG=${lib.getDev curl}/bin/curl-config"
@@ -118,8 +118,8 @@ stdenv.mkDerivation (finalAttrs: {
   ++ lib.optional (stdenv.buildPlatform == stdenv.hostPlatform) "SHELL_PATH=${stdenv.shell}"
   ++ (if perlSupport then ["PERL_PATH=${perlPackages.perl}/bin/perl"] else ["NO_PERL=1"])
   ++ (if pythonSupport then ["PYTHON_PATH=${python3}/bin/python"] else ["NO_PYTHON=1"])
-  ++ lib.optionals stdenv.isSunOS ["INSTALL=install" "NO_INET_NTOP=" "NO_INET_PTON="]
-  ++ (if stdenv.isDarwin then ["NO_APPLE_COMMON_CRYPTO=1"] else ["sysconfdir=/etc"])
+  ++ lib.optionals stdenv.hostPlatform.isSunOS ["INSTALL=install" "NO_INET_NTOP=" "NO_INET_PTON="]
+  ++ (if stdenv.hostPlatform.isDarwin then ["NO_APPLE_COMMON_CRYPTO=1"] else ["sysconfdir=/etc"])
   ++ lib.optionals stdenv.hostPlatform.isMusl ["NO_SYS_POLL_H=1" "NO_GETTEXT=YesPlease"]
   ++ lib.optional withpcre2 "USE_LIBPCRE2=1"
   ++ lib.optional (!nlsSupport) "NO_GETTEXT=1"
@@ -130,7 +130,7 @@ stdenv.mkDerivation (finalAttrs: {
   # acceptable version.
   #
   # See https://github.com/Homebrew/homebrew-core/commit/dfa3ccf1e7d3901e371b5140b935839ba9d8b706
-  ++ lib.optional stdenv.isDarwin "TKFRAMEWORK=/nonexistent"
+  ++ lib.optional stdenv.hostPlatform.isDarwin "TKFRAMEWORK=/nonexistent"
   ++ lib.optional (stdenv.hostPlatform.isFreeBSD && stdenv.hostPlatform != stdenv.buildPlatform) "uname_S=FreeBSD";
 
   disallowedReferences = lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
@@ -302,7 +302,7 @@ stdenv.mkDerivation (finalAttrs: {
     "PERL_PATH=${buildPackages.perl}/bin/perl"
   ];
 
-  nativeInstallCheckInputs = lib.optional (stdenv.isDarwin || stdenv.isFreeBSD) sysctl;
+  nativeInstallCheckInputs = lib.optional (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isFreeBSD) sysctl;
 
   preInstallCheck = ''
     installCheckFlagsArray+=(
@@ -346,7 +346,7 @@ stdenv.mkDerivation (finalAttrs: {
     # Fails reproducibly on ZFS on Linux with formD normalization
     disable_test t0021-conversion
     disable_test t3910-mac-os-precompose
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # XXX: Some tests added in 2.24.0 fail.
     # Please try to re-enable on the next release.
     disable_test t7816-grep-binary-pattern
@@ -355,7 +355,7 @@ stdenv.mkDerivation (finalAttrs: {
     disable_test t6300-for-each-ref
     # not ok 1 - populate workdir (with 2.33.1 on x86_64-darwin)
     disable_test t5003-archive-zip
-  '' + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     disable_test t7527-builtin-fsmonitor
   '' + lib.optionalString stdenv.hostPlatform.isMusl ''
     # Test fails (as of 2.17.0, musl 1.1.19)
diff --git a/pkgs/applications/version-management/gitkraken/default.nix b/pkgs/applications/version-management/gitkraken/default.nix
index 68d8fabf5a49..3e2206aa633b 100644
--- a/pkgs/applications/version-management/gitkraken/default.nix
+++ b/pkgs/applications/version-management/gitkraken/default.nix
@@ -249,4 +249,4 @@ let
     dontFixup = true;
   };
 in
-if stdenv.isDarwin then darwin else linux
+if stdenv.hostPlatform.isDarwin then darwin else linux
diff --git a/pkgs/applications/version-management/gitnr/default.nix b/pkgs/applications/version-management/gitnr/default.nix
index a6d5a5bd61e3..3e4e1c07f852 100644
--- a/pkgs/applications/version-management/gitnr/default.nix
+++ b/pkgs/applications/version-management/gitnr/default.nix
@@ -28,9 +28,9 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libxkbcommon
     wayland
   ];
diff --git a/pkgs/applications/version-management/gitoxide/default.nix b/pkgs/applications/version-management/gitoxide/default.nix
index 9909d9829cbd..f89e80c2daa6 100644
--- a/pkgs/applications/version-management/gitoxide/default.nix
+++ b/pkgs/applications/version-management/gitoxide/default.nix
@@ -32,7 +32,7 @@ in rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ cmake pkg-config installShellFiles ];
 
-  buildInputs = [ curl ] ++ (if stdenv.isDarwin
+  buildInputs = [ curl ] ++ (if stdenv.hostPlatform.isDarwin
     then [ libiconv Security SystemConfiguration ]
     else [ openssl ]);
 
diff --git a/pkgs/applications/version-management/gittyup/default.nix b/pkgs/applications/version-management/gittyup/default.nix
index 2a7cb13d2aa4..146f2c7e9525 100644
--- a/pkgs/applications/version-management/gittyup/default.nix
+++ b/pkgs/applications/version-management/gittyup/default.nix
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
     openssl
     qtbase
     qttools
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     CoreFoundation
     Security
   ]);
@@ -73,6 +73,6 @@ stdenv.mkDerivation rec {
     license = with licenses; [ mit ];
     maintainers = [ ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/version-management/guilt/default.nix b/pkgs/applications/version-management/guilt/default.nix
index aeb0eaf43f11..bca572b28bca 100644
--- a/pkgs/applications/version-management/guilt/default.nix
+++ b/pkgs/applications/version-management/guilt/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
     gawk
     git
     gnused
-  ] ++ lib.optionals stdenv.isDarwin [ openssl ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ openssl ];
   makeFlags = [
     "PREFIX=$(out)"
   ];
diff --git a/pkgs/applications/version-management/lucky-commit/default.nix b/pkgs/applications/version-management/lucky-commit/default.nix
index dcaca33f0952..6e3cb2c09d5f 100644
--- a/pkgs/applications/version-management/lucky-commit/default.nix
+++ b/pkgs/applications/version-management/lucky-commit/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-8JkodGtMdYP/IIBqRcJFD5syiZi+VakDyX7VcvR0HLo=";
 
-  buildInputs = lib.optional withOpenCL (if stdenv.isDarwin then OpenCL else ocl-icd);
+  buildInputs = lib.optional withOpenCL (if stdenv.hostPlatform.isDarwin then OpenCL else ocl-icd);
 
   buildNoDefaultFeatures = !withOpenCL;
 
diff --git a/pkgs/applications/version-management/mercurial/default.nix b/pkgs/applications/version-management/mercurial/default.nix
index 466cc643c39f..5a790ff3f4d3 100644
--- a/pkgs/applications/version-management/mercurial/default.nix
+++ b/pkgs/applications/version-management/mercurial/default.nix
@@ -50,7 +50,7 @@ let
            rustc
          ];
     buildInputs = [ docutils ]
-      ++ lib.optionals stdenv.isDarwin [ ApplicationServices ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ ApplicationServices ];
 
     makeFlags = [ "PREFIX=$(out)" ]
       ++ lib.optional rustSupport "PURE=--rust";
diff --git a/pkgs/applications/version-management/p4/default.nix b/pkgs/applications/version-management/p4/default.nix
index 06e4624c8ee0..ec01f86a3af0 100644
--- a/pkgs/applications/version-management/p4/default.nix
+++ b/pkgs/applications/version-management/p4/default.nix
@@ -43,11 +43,11 @@ stdenv.mkDerivation (finalAttrs: rec {
 
   nativeBuildInputs = [ jam ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices Foundation Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices Foundation Security ];
 
   outputs = [ "out" "bin" "dev" ];
 
-  hardeningDisable = lib.optionals stdenv.isDarwin [ "strictoverflow" ];
+  hardeningDisable = lib.optionals stdenv.hostPlatform.isDarwin [ "strictoverflow" ];
 
   jamFlags =
     [
@@ -59,8 +59,8 @@ stdenv.mkDerivation (finalAttrs: rec {
     ]
     ++ lib.optionals stdenv.cc.isClang [ "-sOSCOMP=clang" "-sCLANGVER=${stdenv.cc.cc.version}" ]
     ++ lib.optionals stdenv.cc.isGNU [ "-sOSCOMP=gcc" "-sGCCVER=${stdenv.cc.cc.version}" ]
-    ++ lib.optionals stdenv.isLinux [ "-sOSVER=26" ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ "-sOSVER=26" ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "-sOSVER=1013"
       "-sMACOSX_SDK=${emptyDirectory}"
       "-sLIBC++DIR=${lib.getLib stdenv.cc.libcxx}/lib"
@@ -69,11 +69,11 @@ stdenv.mkDerivation (finalAttrs: rec {
   CCFLAGS =
     # The file contrib/optimizations/slide_hash_neon.h is missing from the
     # upstream distribution. It comes from the Android/Chromium sources.
-    lib.optionals stdenv.isAarch64 [ "-I${androidZlibContrib}" ];
+    lib.optionals stdenv.hostPlatform.isAarch64 [ "-I${androidZlibContrib}" ];
 
   "C++FLAGS" =
     # Avoid a compilation error that only occurs for 4-byte longs.
-    lib.optionals stdenv.isi686 [ "-Wno-narrowing" ]
+    lib.optionals stdenv.hostPlatform.isi686 [ "-Wno-narrowing" ]
     # See the "Header dependency changes" section of
     # https://www.gnu.org/software/gcc/gcc-11/porting_to.html for more
     # information on why we need to include these.
diff --git a/pkgs/applications/version-management/p4d/default.nix b/pkgs/applications/version-management/p4d/default.nix
index d7dcd1405575..b441fe846302 100644
--- a/pkgs/applications/version-management/p4d/default.nix
+++ b/pkgs/applications/version-management/p4d/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation {
 
   sourceRoot = ".";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   dontBuild = true;
 
diff --git a/pkgs/applications/version-management/p4v/default.nix b/pkgs/applications/version-management/p4v/default.nix
index 2824ed82cfa2..82aa6b57a8c5 100644
--- a/pkgs/applications/version-management/p4v/default.nix
+++ b/pkgs/applications/version-management/p4v/default.nix
@@ -21,7 +21,7 @@ let
   };
 
   mkDerivation =
-    if stdenv.isDarwin then callPackage ./darwin.nix { }
+    if stdenv.hostPlatform.isDarwin then callPackage ./darwin.nix { }
     else qt6Packages.callPackage ./linux.nix { };
 in mkDerivation {
   pname = "p4v";
diff --git a/pkgs/applications/version-management/pijul/default.nix b/pkgs/applications/version-management/pijul/default.nix
index 7503814c389d..95d974bfa145 100644
--- a/pkgs/applications/version-management/pijul/default.nix
+++ b/pkgs/applications/version-management/pijul/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ installShellFiles pkg-config ];
   buildInputs = [ openssl libsodium xxHash ]
     ++ (lib.optionals gitImportSupport [ libgit2 ])
-    ++ (lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+    ++ (lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
       CoreServices Security SystemConfiguration
     ]));
 
diff --git a/pkgs/applications/version-management/rapidsvn/default.nix b/pkgs/applications/version-management/rapidsvn/default.nix
index 8887d5126fde..4ed034c500f9 100644
--- a/pkgs/applications/version-management/rapidsvn/default.nix
+++ b/pkgs/applications/version-management/rapidsvn/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     apr
     aprutil
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
   ];
 
diff --git a/pkgs/applications/version-management/sapling/default.nix b/pkgs/applications/version-management/sapling/default.nix
index 13ff1b70f297..e19fbeb4977f 100644
--- a/pkgs/applications/version-management/sapling/default.nix
+++ b/pkgs/applications/version-management/sapling/default.nix
@@ -40,7 +40,7 @@ let
   #
   # See https://github.com/NixOS/nixpkgs/pull/198311#issuecomment-1326894295
   myCargoSetupHook = rustPlatform.cargoSetupHook.overrideAttrs (old: {
-    cargoConfig = lib.optionalString (!stdenv.isDarwin) old.cargoConfig;
+    cargoConfig = lib.optionalString (!stdenv.hostPlatform.isDarwin) old.cargoConfig;
   });
 
   src = fetchFromGitHub {
@@ -141,7 +141,7 @@ python311Packages.buildPythonApplication {
     install ${isl}/isl-dist.tar.xz $out/lib/isl-dist.tar.xz
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/sl \
       --set LOCALE_ARCHIVE "${glibcLocales}/lib/locale/locale-archive"
   '';
@@ -156,7 +156,7 @@ python311Packages.buildPythonApplication {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     curl
     libiconv
     Cocoa
diff --git a/pkgs/applications/version-management/silver-platter/default.nix b/pkgs/applications/version-management/silver-platter/default.nix
index f1653cf10389..368cf8dcf218 100644
--- a/pkgs/applications/version-management/silver-platter/default.nix
+++ b/pkgs/applications/version-management/silver-platter/default.nix
@@ -37,9 +37,9 @@ buildPythonApplication rec {
 
   propagatedBuildInputs = [ setuptools breezy dulwich jinja2 pyyaml ruamel-yaml ];
   nativeBuildInputs = [ setuptools-rust rustPlatform.cargoSetupHook cargo rustc ]
-    ++ lib.optionals stdenv.isLinux [ pkg-config ];
-  buildInputs = lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   pythonImportsCheck = [ "silver_platter" ];
 
diff --git a/pkgs/applications/version-management/stgit/default.nix b/pkgs/applications/version-management/stgit/default.nix
index 55c889ce105e..4d44724eddec 100644
--- a/pkgs/applications/version-management/stgit/default.nix
+++ b/pkgs/applications/version-management/stgit/default.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeCheckInputs = [
     git perl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.system_cmds libiconv
   ];
 
diff --git a/pkgs/applications/version-management/sublime-merge/common.nix b/pkgs/applications/version-management/sublime-merge/common.nix
index a978ff16357d..84f41e6e26c6 100644
--- a/pkgs/applications/version-management/sublime-merge/common.nix
+++ b/pkgs/applications/version-management/sublime-merge/common.nix
@@ -85,7 +85,7 @@ let
       for binary in ${builtins.concatStringsSep " " binaries}; do
         patchelf \
           --interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
-          --set-rpath ${lib.makeLibraryPath neededLibraries}:${libGL}/lib:${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.is64bit "64"} \
+          --set-rpath ${lib.makeLibraryPath neededLibraries}:${libGL}/lib:${stdenv.cc.cc.lib}/lib${lib.optionalString stdenv.hostPlatform.is64bit "64"} \
           $binary
       done
 
diff --git a/pkgs/applications/version-management/subversion/default.nix b/pkgs/applications/version-management/subversion/default.nix
index 7f0122e56c06..11d9c7fefdff 100644
--- a/pkgs/applications/version-management/subversion/default.nix
+++ b/pkgs/applications/version-management/subversion/default.nix
@@ -127,7 +127,7 @@ let
       platforms = platforms.linux ++ platforms.darwin;
     };
 
-  } // lib.optionalAttrs stdenv.isDarwin {
+  } // lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     CXX = "clang++";
     CC = "clang";
     CPP = "clang -E";
diff --git a/pkgs/applications/version-management/tig/default.nix b/pkgs/applications/version-management/tig/default.nix
index b4a8533d468e..6c90d24e55bf 100644
--- a/pkgs/applications/version-management/tig/default.nix
+++ b/pkgs/applications/version-management/tig/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   autoreconfFlags = [ "-I" "tools" "-v" ];
 
   buildInputs = [ ncurses readline git ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   # those files are inherently impure, we'll handle the corresponding dependencies.
   postPatch = ''
diff --git a/pkgs/applications/version-management/yadm/default.nix b/pkgs/applications/version-management/yadm/default.nix
index 0dab32e57acc..2d6c0c9089af 100644
--- a/pkgs/applications/version-management/yadm/default.nix
+++ b/pkgs/applications/version-management/yadm/default.nix
@@ -75,7 +75,7 @@ resholve.mkDerivation rec {
         gnutar
       ];
       fake = {
-        external = if stdenv.isCygwin then [ ] else [ "cygpath" ];
+        external = if stdenv.hostPlatform.isCygwin then [ ] else [ "cygpath" ];
       };
       fix = {
         "$GPG_PROGRAM" = [ "gpg" ];
diff --git a/pkgs/applications/video/dmlive/default.nix b/pkgs/applications/video/dmlive/default.nix
index db34d1da2749..5127dba204fc 100644
--- a/pkgs/applications/video/dmlive/default.nix
+++ b/pkgs/applications/video/dmlive/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config makeWrapper ];
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ configd Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ configd Security ];
 
   postInstall = ''
     wrapProgram "$out/bin/dmlive" --prefix PATH : "${lib.makeBinPath [ mpv ffmpeg nodejs ]}"
diff --git a/pkgs/applications/video/glaxnimate/default.nix b/pkgs/applications/video/glaxnimate/default.nix
index 9e4eda8a0790..7c6d8500d877 100644
--- a/pkgs/applications/video/glaxnimate/default.nix
+++ b/pkgs/applications/video/glaxnimate/default.nix
@@ -72,7 +72,7 @@ stdenv.mkDerivation rec {
 
   qtWrapperArgs = [ ''--prefix PATH : ${python3WithLibs}/bin'' ];
 
-  passthru.tests.version = lib.optionalAttrs stdenv.isLinux (testers.testVersion {
+  passthru.tests.version = lib.optionalAttrs stdenv.hostPlatform.isLinux (testers.testVersion {
     package = glaxnimate;
     command = "${xvfb-run}/bin/xvfb-run glaxnimate --version";
   });
diff --git a/pkgs/applications/video/gnomecast/default.nix b/pkgs/applications/video/gnomecast/default.nix
index 37bf7baec870..bea389ccc534 100644
--- a/pkgs/applications/video/gnomecast/default.nix
+++ b/pkgs/applications/video/gnomecast/default.nix
@@ -40,7 +40,7 @@ buildPythonApplication rec {
     description = "Native Linux GUI for Chromecasting local files";
     homepage = "https://github.com/keredson/gnomecast";
     license = with licenses; [ gpl3 ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "gnomecast";
   };
 }
diff --git a/pkgs/applications/video/go2tv/default.nix b/pkgs/applications/video/go2tv/default.nix
index e48b884e93d3..e7ecf2936935 100644
--- a/pkgs/applications/video/go2tv/default.nix
+++ b/pkgs/applications/video/go2tv/default.nix
@@ -36,7 +36,7 @@ buildGoModule rec {
     xorg.libXext
     xorg.libXxf86vm
     libglvnd
-  ] ++ lib.optionals stdenv.isDarwin [ Carbon Cocoa Kernel UserNotifications ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon Cocoa Kernel UserNotifications ];
 
   ldflags = [
     "-s"
diff --git a/pkgs/applications/video/gpac/default.nix b/pkgs/applications/video/gpac/default.nix
index 57da5147407e..b036e69ce8a3 100644
--- a/pkgs/applications/video/gpac/default.nix
+++ b/pkgs/applications/video/gpac/default.nix
@@ -15,13 +15,13 @@ stdenv.mkDerivation rec {
   # For most other functionality, this should probably be extended
   nativeBuildInputs = [
     pkg-config
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
   ];
 
   buildInputs = [
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Carbon
   ];
 
diff --git a/pkgs/applications/video/hyperion-ng/default.nix b/pkgs/applications/video/hyperion-ng/default.nix
index 50c00e03c4ef..837e5071f440 100644
--- a/pkgs/applications/video/hyperion-ng/default.nix
+++ b/pkgs/applications/video/hyperion-ng/default.nix
@@ -37,12 +37,12 @@ stdenv.mkDerivation rec {
     qtserialport
     qtsvg
     qtx11extras
-  ] ++ lib.optional stdenv.isLinux libcec
+  ] ++ lib.optional stdenv.hostPlatform.isLinux libcec
     ++ lib.optional withRPiDispmanx libraspberrypi;
 
   nativeBuildInputs = [
     cmake wrapQtAppsHook
-  ] ++ lib.optional stdenv.isDarwin perl; # for macos bundle
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin perl; # for macos bundle
 
   patchPhase =  ''
     patchShebangs test/testrunner.sh
diff --git a/pkgs/applications/video/jellyfin-media-player/default.nix b/pkgs/applications/video/jellyfin-media-player/default.nix
index fef1a9ae80f0..013b6bdf3631 100644
--- a/pkgs/applications/video/jellyfin-media-player/default.nix
+++ b/pkgs/applications/video/jellyfin-media-player/default.nix
@@ -21,7 +21,7 @@
 , qtwebchannel
 , qtwebengine
 , qtx11extras
-, withDbus ? stdenv.isLinux
+, withDbus ? stdenv.hostPlatform.isLinux
 }:
 
 mkDerivation rec {
@@ -51,9 +51,9 @@ mkDerivation rec {
     qtwebchannel
     qtwebengine
     qtx11extras
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
     CoreAudio
     CoreFoundation
@@ -74,7 +74,7 @@ mkDerivation rec {
     "-DLINUX_X11POWER=ON"
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/bin $out/Applications
     mv "$out/Jellyfin Media Player.app" $out/Applications
 
diff --git a/pkgs/applications/video/lxdvdrip/default.nix b/pkgs/applications/video/lxdvdrip/default.nix
index 6b9c8ef2fd14..32b533346dfd 100644
--- a/pkgs/applications/video/lxdvdrip/default.nix
+++ b/pkgs/applications/video/lxdvdrip/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libdvdread ];
 
   meta = {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Command line tool to make a copy from a video DVD for private use";
     homepage = "https://sourceforge.net/projects/lxdvdrip";
     license = lib.licenses.gpl2;
diff --git a/pkgs/applications/video/mirakurun/default.nix b/pkgs/applications/video/mirakurun/default.nix
index 3d8034521c89..a1d9d58403d0 100644
--- a/pkgs/applications/video/mirakurun/default.nix
+++ b/pkgs/applications/video/mirakurun/default.nix
@@ -41,7 +41,7 @@ buildNpmPackage rec {
         bash
         nodejs
         which
-      ] ++ lib.optionals stdenv.isLinux [ v4l-utils ];
+      ] ++ lib.optionals stdenv.hostPlatform.isLinux [ v4l-utils ];
       crc32Patch = substituteAll {
         src = ./fix-musl-detection.patch;
         isMusl = if stdenv.hostPlatform.isMusl then "true" else "false";
diff --git a/pkgs/applications/video/mkvtoolnix/default.nix b/pkgs/applications/video/mkvtoolnix/default.nix
index aff2910784ed..7d4ced909df6 100644
--- a/pkgs/applications/video/mkvtoolnix/default.nix
+++ b/pkgs/applications/video/mkvtoolnix/default.nix
@@ -91,8 +91,8 @@ stdenv.mkDerivation rec {
     zlib
   ]
   ++ optionals withGUI [ cmark ]
-  ++ optionals stdenv.isLinux [ qtwayland ]
-  ++ optionals stdenv.isDarwin [ libiconv ];
+  ++ optionals stdenv.hostPlatform.isLinux [ qtwayland ]
+  ++ optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   # autoupdate is not needed but it silences a ton of pointless warnings
   postPatch = ''
diff --git a/pkgs/applications/video/mlv-app/default.nix b/pkgs/applications/video/mlv-app/default.nix
index e3f61cdd8201..da9f4d5807e1 100644
--- a/pkgs/applications/video/mlv-app/default.nix
+++ b/pkgs/applications/video/mlv-app/default.nix
@@ -18,7 +18,7 @@ mkDerivation rec {
     sha256 = "sha256-RfZXHmWSjZBxNFwQ/bzHppsLS0LauURIdnkAzxAIBcU=";
   };
 
-  patches = if stdenv.isAarch64 then ./aarch64-flags.patch else null;
+  patches = if stdenv.hostPlatform.isAarch64 then ./aarch64-flags.patch else null;
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/applications/video/motion/default.nix b/pkgs/applications/video/motion/default.nix
index c3082639cae7..5e02d58977ce 100644
--- a/pkgs/applications/video/motion/default.nix
+++ b/pkgs/applications/video/motion/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ puffnfresh veprbl ];
     platforms = platforms.unix;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
     mainProgram = "motion";
   };
 }
diff --git a/pkgs/applications/video/mpc-qt/default.nix b/pkgs/applications/video/mpc-qt/default.nix
index c9219fdf6359..c3f6981503c8 100644
--- a/pkgs/applications/video/mpc-qt/default.nix
+++ b/pkgs/applications/video/mpc-qt/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
     homepage = "https://mpc-qt.github.io";
     license = licenses.gpl2;
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ romildo ];
     mainProgram = "mpc-qt";
   };
diff --git a/pkgs/applications/video/mplayer/default.nix b/pkgs/applications/video/mplayer/default.nix
index 1608585de795..352c7b7edae7 100644
--- a/pkgs/applications/video/mplayer/default.nix
+++ b/pkgs/applications/video/mplayer/default.nix
@@ -5,11 +5,11 @@
 , x11Support ? true, libX11, libXext, libGLU, libGL
 , xineramaSupport ? true, libXinerama
 , xvSupport ? true, libXv
-, alsaSupport ? stdenv.isLinux, alsa-lib
+, alsaSupport ? stdenv.hostPlatform.isLinux, alsa-lib
 , screenSaverSupport ? true, libXScrnSaver
 , vdpauSupport ? false, libvdpau
-, cddaSupport ? !stdenv.isDarwin, cdparanoia
-, dvdnavSupport ? !stdenv.isDarwin, libdvdnav
+, cddaSupport ? !stdenv.hostPlatform.isDarwin, cdparanoia
+, dvdnavSupport ? !stdenv.hostPlatform.isDarwin, libdvdnav
 , dvdreadSupport ? true, libdvdread
 , bluraySupport ? true, libbluray
 , amrSupport ? false, amrnb, amrwb
@@ -112,7 +112,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional libjpegSupport libjpeg
     ++ lib.optional bs2bSupport libbs2b
     ++ lib.optional v4lSupport libv4l
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Cocoa darwin.apple_sdk.frameworks.OpenGL ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Cocoa darwin.apple_sdk.frameworks.OpenGL ]
     ;
 
   configurePlatforms = [ ];
@@ -147,8 +147,8 @@ stdenv.mkDerivation rec {
   ] ++ lib.optional (useUnfreeCodecs && codecs != null && !crossBuild) "--codecsdir=${codecs}"
     ++ lib.optional (stdenv.hostPlatform.isx86 && !crossBuild) "--enable-runtime-cpudetection"
     ++ lib.optional fribidiSupport "--enable-fribidi"
-    ++ lib.optional (stdenv.isLinux && !stdenv.isAarch64) "--enable-vidix"
-    ++ lib.optional stdenv.isLinux "--enable-fbdev"
+    ++ lib.optional (stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAarch64) "--enable-vidix"
+    ++ lib.optional stdenv.hostPlatform.isLinux "--enable-fbdev"
     ++ lib.optionals (crossBuild) [
     "--enable-cross-compile"
     "--disable-vidix-pcidb"
diff --git a/pkgs/applications/video/mpv/default.nix b/pkgs/applications/video/mpv/default.nix
index 5b255be9a1a5..9415a97770c9 100644
--- a/pkgs/applications/video/mpv/default.nix
+++ b/pkgs/applications/video/mpv/default.nix
@@ -72,37 +72,37 @@
   zimg,
 
   # Boolean
-  alsaSupport ? stdenv.isLinux,
+  alsaSupport ? stdenv.hostPlatform.isLinux,
   archiveSupport ? true,
   bluraySupport ? true,
   bs2bSupport ? true,
   cacaSupport ? true,
   cddaSupport ? false,
   cmsSupport ? true,
-  drmSupport ? stdenv.isLinux,
-  dvbinSupport ? stdenv.isLinux,
-  dvdnavSupport ? stdenv.isLinux,
+  drmSupport ? stdenv.hostPlatform.isLinux,
+  dvbinSupport ? stdenv.hostPlatform.isLinux,
+  dvdnavSupport ? stdenv.hostPlatform.isLinux,
   jackaudioSupport ? false,
   javascriptSupport ? true,
   libpngSupport ? true,
   openalSupport ? true,
-  pipewireSupport ? stdenv.isLinux,
-  pulseSupport ? config.pulseaudio or stdenv.isLinux,
+  pipewireSupport ? stdenv.hostPlatform.isLinux,
+  pulseSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux,
   rubberbandSupport ? true,
   screenSaverSupport ? true,
-  sdl2Support ? !stdenv.isDarwin,
+  sdl2Support ? !stdenv.hostPlatform.isDarwin,
   sixelSupport ? false,
   speexSupport ? true,
-  swiftSupport ? stdenv.isDarwin,
+  swiftSupport ? stdenv.hostPlatform.isDarwin,
   theoraSupport ? true,
   vaapiSupport ? x11Support || waylandSupport,
   vapoursynthSupport ? false,
   vdpauSupport ? true,
-  vulkanSupport ? stdenv.isLinux,
-  waylandSupport ? stdenv.isLinux,
-  x11Support ? stdenv.isLinux,
-  xineramaSupport ? stdenv.isLinux,
-  xvSupport ? stdenv.isLinux,
+  vulkanSupport ? stdenv.hostPlatform.isLinux,
+  waylandSupport ? stdenv.hostPlatform.isLinux,
+  x11Support ? stdenv.hostPlatform.isLinux,
+  xineramaSupport ? stdenv.hostPlatform.isLinux,
+  xvSupport ? stdenv.hostPlatform.isLinux,
   zimgSupport ? true,
 }:
 
@@ -124,7 +124,7 @@ let
     platform // lib.optionalAttrs (platform ? darwinMinVersion) { darwinMinVersion = version; };
 
   stdenv' =
-    if swiftSupport && stdenv.isDarwin && stdenv.isx86_64 then
+    if swiftSupport && stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64 then
       stdenv.override (old: {
         buildPlatform = overrideSDK old.buildPlatform "11.0";
         hostPlatform = overrideSDK old.hostPlatform "11.0";
@@ -194,7 +194,7 @@ stdenv'.mkDerivation (finalAttrs: {
       (lib.mesonEnable "swift-build" swiftSupport)
       (lib.mesonEnable "macos-cocoa-cb" swiftSupport)
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Toggle explicitly because it fails on darwin
       (lib.mesonEnable "videotoolbox-pl" vulkanSupport)
     ];
@@ -209,7 +209,7 @@ stdenv'.mkDerivation (finalAttrs: {
       ninja
       pkg-config
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       buildPackages.darwin.sigtool
       xcbuild.xcrun
     ]
@@ -283,9 +283,9 @@ stdenv'.mkDerivation (finalAttrs: {
     ++ lib.optionals xineramaSupport [ libXinerama ]
     ++ lib.optionals xvSupport [ libXv ]
     ++ lib.optionals zimgSupport [ zimg ]
-    ++ lib.optionals stdenv.isLinux [ nv-codec-headers-11 ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ nv-codec-headers-11 ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       Accelerate
       CoreFoundation
       Cocoa
@@ -293,12 +293,12 @@ stdenv'.mkDerivation (finalAttrs: {
       MediaPlayer
       VideoToolbox
     ]
-    ++ lib.optionals (stdenv.isDarwin && swiftSupport) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && swiftSupport) [
       AVFoundation
       CoreMedia
     ];
 
-  postBuild = lib.optionalString stdenv.isDarwin ''
+  postBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     pushd .. # Must be run from the source dir because it uses relative paths
     python3 TOOLS/osxbundle.py -s build/mpv
     popd
@@ -323,14 +323,14 @@ stdenv'.mkDerivation (finalAttrs: {
       printf "NoDisplay=true\n" >> umpv.desktop
       popd
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/Applications
       cp -r mpv.app $out/Applications
     '';
 
   # Set RUNPATH so that libcuda in /run/opengl-driver(-32)/lib can be found.
   # See the explanation in addDriverRunpath.
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     addDriverRunpath $out/bin/mpv
     patchShebangs --update --host $out/bin/umpv $out/bin/mpv_identify.sh
   '';
diff --git a/pkgs/applications/video/mpv/scripts/videoclip.nix b/pkgs/applications/video/mpv/scripts/videoclip.nix
index bff265892eb1..3a2ac5e4e992 100644
--- a/pkgs/applications/video/mpv/scripts/videoclip.nix
+++ b/pkgs/applications/video/mpv/scripts/videoclip.nix
@@ -24,7 +24,7 @@ buildLua {
       substituteInPlace platform.lua \
       --replace \'curl\' \'${lib.getExe curl}\' \
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       --replace xclip ${lib.getExe xclip} \
       --replace wl-copy ${lib.getExe' wl-clipboard "wl-copy"}
     '';
diff --git a/pkgs/applications/video/mpv/wrapper.nix b/pkgs/applications/video/mpv/wrapper.nix
index b68f2d50c5c4..8104921aadbd 100644
--- a/pkgs/applications/video/mpv/wrapper.nix
+++ b/pkgs/applications/video/mpv/wrapper.nix
@@ -95,7 +95,7 @@ let
         makeWrapper "${mpv}/bin/mpv" "$out/bin/mpv" ${mostMakeWrapperArgs}
         rm "$out/bin/umpv"
         makeWrapper "${mpv}/bin/umpv" "$out/bin/umpv" ${umpvWrapperArgs}
-      '' + lib.optionalString stdenv.isDarwin ''
+      '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
         # wrapProgram can't operate on symlinks
         rm "$out/Applications/mpv.app/Contents/MacOS/mpv"
         makeWrapper "${mpv}/Applications/mpv.app/Contents/MacOS/mpv" "$out/Applications/mpv.app/Contents/MacOS/mpv" ${mostMakeWrapperArgs}
diff --git a/pkgs/applications/video/natron/default.nix b/pkgs/applications/video/natron/default.nix
index 5ca88c666ee8..e02aa4af610d 100644
--- a/pkgs/applications/video/natron/default.nix
+++ b/pkgs/applications/video/natron/default.nix
@@ -98,6 +98,6 @@ stdenv.mkDerivation {
     license = lib.licenses.gpl2;
     maintainers = [ maintainers.puffnfresh ];
     platforms = platforms.linux;
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/applications/video/obs-studio/default.nix b/pkgs/applications/video/obs-studio/default.nix
index 5f3f68fb03f5..c7bcdfc4f75d 100644
--- a/pkgs/applications/video/obs-studio/default.nix
+++ b/pkgs/applications/video/obs-studio/default.nix
@@ -31,13 +31,13 @@
 , luajit
 , swig
 , python3
-, alsaSupport ? stdenv.isLinux
+, alsaSupport ? stdenv.hostPlatform.isLinux
 , alsa-lib
-, pulseaudioSupport ? config.pulseaudio or stdenv.isLinux
+, pulseaudioSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux
 , libpulseaudio
 , libcef
 , pciutils
-, pipewireSupport ? stdenv.isLinux
+, pipewireSupport ? stdenv.hostPlatform.isLinux
 , withFdk ? true
 , pipewire
 , libdrm
@@ -183,7 +183,7 @@ stdenv.mkDerivation (finalAttrs: {
     )
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     addDriverRunpath $out/lib/lib*.so
     addDriverRunpath $out/lib/obs-plugins/*.so
 
diff --git a/pkgs/applications/video/obs-studio/plugins/input-overlay.nix b/pkgs/applications/video/obs-studio/plugins/input-overlay.nix
index 9a2069a27133..aff145b1fc74 100644
--- a/pkgs/applications/video/obs-studio/plugins/input-overlay.nix
+++ b/pkgs/applications/video/obs-studio/plugins/input-overlay.nix
@@ -53,6 +53,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2;
     platforms = platforms.linux;
     # never built on aarch64-linux since first introduction in nixpkgs
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/applications/video/obs-studio/plugins/obs-vkcapture.nix b/pkgs/applications/video/obs-studio/plugins/obs-vkcapture.nix
index b66d3d01b234..f7e21b796c54 100644
--- a/pkgs/applications/video/obs-studio/plugins/obs-vkcapture.nix
+++ b/pkgs/applications/video/obs-studio/plugins/obs-vkcapture.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-RIDsT6eL6bUfqPiyPlecnZHu5OorcJb3Xal8pjdOpAA=";
   };
 
-  cmakeFlags = lib.optionals stdenv.isi686 [
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isi686 [
     # We don't want to build the plugin for 32bit. The library integrates with
     # the 64bit plugin but it's necessary to be loaded into 32bit games.
     "-DBUILD_PLUGIN=OFF"
@@ -47,7 +47,7 @@ stdenv.mkDerivation (finalAttrs: {
     vulkan-loader
     wayland
   ]
-  ++ lib.optionals (!stdenv.isi686) [
+  ++ lib.optionals (!stdenv.hostPlatform.isi686) [
     obs-studio
   ];
 
diff --git a/pkgs/applications/video/olive-editor/default.nix b/pkgs/applications/video/olive-editor/default.nix
index 18ee73b53454..c033c1914368 100644
--- a/pkgs/applications/video/olive-editor/default.nix
+++ b/pkgs/applications/video/olive-editor/default.nix
@@ -80,7 +80,7 @@ stdenv.mkDerivation {
     qtwayland
     qtmultimedia
     qttools
-  ] ++ lib.optional stdenv.isDarwin CoreFoundation;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin CoreFoundation;
 
   meta = with lib; {
     description = "Professional open-source NLE video editor";
@@ -90,7 +90,7 @@ stdenv.mkDerivation {
     maintainers = [ maintainers.balsoft ];
     platforms = platforms.unix;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
     mainProgram = "olive-editor";
   };
 }
diff --git a/pkgs/applications/video/openshot-qt/default.nix b/pkgs/applications/video/openshot-qt/default.nix
index 88f13ef3eb9b..ec6e309e9b82 100644
--- a/pkgs/applications/video/openshot-qt/default.nix
+++ b/pkgs/applications/video/openshot-qt/default.nix
@@ -10,7 +10,7 @@
 , qtsvg
 , qtwayland
 , wayland
-, waylandSupport ? stdenv.isLinux
+, waylandSupport ? stdenv.hostPlatform.isLinux
 , wrapGAppsHook3
 }:
 
@@ -66,7 +66,7 @@ mkDerivationWith python3.pkgs.buildPythonApplication {
     wrapProgram $out/bin/openshot-qt \
   ''
   # Fix toolbar icons on Darwin
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     --suffix QT_PLUGIN_PATH : "${lib.getBin qtsvg}/${qtbase.qtPluginPrefix}" \
   '' + ''
     "''${gappsWrapperArgs[@]}" \
diff --git a/pkgs/applications/video/pyca/default.nix b/pkgs/applications/video/pyca/default.nix
index 52463c468931..eab7c5a7d233 100644
--- a/pkgs/applications/video/pyca/default.nix
+++ b/pkgs/applications/video/pyca/default.nix
@@ -73,7 +73,7 @@ python3.pkgs.buildPythonApplication rec {
   };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Fully functional Opencast capture agent written in Python";
     mainProgram = "pyca";
     homepage = "https://github.com/opencast/pyCA";
diff --git a/pkgs/applications/video/qmediathekview/default.nix b/pkgs/applications/video/qmediathekview/default.nix
index 0e8f3bfb584b..d08387669eb3 100644
--- a/pkgs/applications/video/qmediathekview/default.nix
+++ b/pkgs/applications/video/qmediathekview/default.nix
@@ -37,7 +37,7 @@ mkDerivation rec {
     license = licenses.gpl3Plus;
     platforms = platforms.linux;
     maintainers = with maintainers; [ dotlambda ];
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
     mainProgram = "QMediathekView";
   };
 }
diff --git a/pkgs/applications/video/qstopmotion/default.nix b/pkgs/applications/video/qstopmotion/default.nix
index 3172c4bb4343..2f0c66ecd1d1 100644
--- a/pkgs/applications/video/qstopmotion/default.nix
+++ b/pkgs/applications/video/qstopmotion/default.nix
@@ -79,7 +79,7 @@ mkDerivation rec {
 
     license = lib.licenses.gpl2Plus;
     maintainers = [ maintainers.leenaars ];
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
     platforms = lib.platforms.gnu ++ lib.platforms.linux;
     mainProgram = "qstopmotion";
   };
diff --git a/pkgs/applications/video/sub-batch/default.nix b/pkgs/applications/video/sub-batch/default.nix
index 713a0ad2753e..48b38da01fae 100644
--- a/pkgs/applications/video/sub-batch/default.nix
+++ b/pkgs/applications/video/sub-batch/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
     homepage = "https://github.com/kl/sub-batch";
     license = licenses.mit;
     maintainers = with maintainers; [ erictapen ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "sub-batch";
   };
 }
diff --git a/pkgs/applications/video/vcs/default.nix b/pkgs/applications/video/vcs/default.nix
index 105823fec3ab..91a966bd1f4e 100644
--- a/pkgs/applications/video/vcs/default.nix
+++ b/pkgs/applications/video/vcs/default.nix
@@ -5,7 +5,7 @@
 }:
 let
   version = "1.13.4";
-  gopt = if stdenv.isLinux then util-linux else getopt;
+  gopt = if stdenv.hostPlatform.isLinux then util-linux else getopt;
   runtimeDeps = [
     coreutils ffmpeg gawk gnugrep gnused imagemagick mplayer gopt
   ];
diff --git a/pkgs/applications/video/youtube-tui/default.nix b/pkgs/applications/video/youtube-tui/default.nix
index 89d32f6f9a70..70458c7f6235 100644
--- a/pkgs/applications/video/youtube-tui/default.nix
+++ b/pkgs/applications/video/youtube-tui/default.nix
@@ -43,14 +43,14 @@ rustPlatform.buildRustPackage rec {
     xorg.libxcb
     libsixel
     mpv
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
     Security
     AppKit
   ];
 
   # sixel-sys is dynamically linked to libsixel
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     wrapProgram $out/bin/youtube-tui \
       --prefix DYLD_LIBRARY_PATH : "${lib.makeLibraryPath [libsixel]}"
   '';
diff --git a/pkgs/applications/virtualization/OVMF/default.nix b/pkgs/applications/virtualization/OVMF/default.nix
index 2c1e49ac2c3d..35336ad8ad3f 100644
--- a/pkgs/applications/virtualization/OVMF/default.nix
+++ b/pkgs/applications/virtualization/OVMF/default.nix
@@ -206,6 +206,6 @@ edk2.mkDerivation projectDscPath (finalAttrs: {
     license = lib.licenses.bsd2;
     platforms = metaPlatforms;
     maintainers = with lib.maintainers; [ adamcstephens raitobezarius mjoerg ];
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 })
diff --git a/pkgs/applications/virtualization/cloud-hypervisor/default.nix b/pkgs/applications/virtualization/cloud-hypervisor/default.nix
index f1dcda8df721..9af9b964825f 100644
--- a/pkgs/applications/virtualization/cloud-hypervisor/default.nix
+++ b/pkgs/applications/virtualization/cloud-hypervisor/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
   separateDebugInfo = true;
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = lib.optional stdenv.isAarch64 dtc;
+  buildInputs = lib.optional stdenv.hostPlatform.isAarch64 dtc;
   checkInputs = [ openssl ];
 
   OPENSSL_NO_VENDOR = true;
diff --git a/pkgs/applications/virtualization/colima/default.nix b/pkgs/applications/virtualization/colima/default.nix
index 253861178594..290186a59e3e 100644
--- a/pkgs/applications/virtualization/colima/default.nix
+++ b/pkgs/applications/virtualization/colima/default.nix
@@ -12,7 +12,7 @@
 , colima
   # use lima-bin on darwin to support native macOS virtualization
   # https://github.com/NixOS/nixpkgs/pull/209171
-, lima-drv ? if stdenv.isDarwin then lima-bin else lima
+, lima-drv ? if stdenv.hostPlatform.isDarwin then lima-bin else lima
 }:
 
 buildGoModule rec {
@@ -33,7 +33,7 @@ buildGoModule rec {
   };
 
   nativeBuildInputs = [ installShellFiles makeWrapper ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.DarwinTools ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.DarwinTools ];
 
   vendorHash = "sha256-niuBo2YUUYKH0eSApOByNLrcHqr9m5VKGoiGp1fKklg=";
 
diff --git a/pkgs/applications/virtualization/docker/default.nix b/pkgs/applications/virtualization/docker/default.nix
index 9ce338dca7b5..0d7d036d6618 100644
--- a/pkgs/applications/virtualization/docker/default.nix
+++ b/pkgs/applications/virtualization/docker/default.nix
@@ -16,11 +16,11 @@ rec {
       , sqlite, iproute2, docker-buildx, docker-compose, docker-sbom
       , iptables, e2fsprogs, xz, util-linux, xfsprogs, git
       , procps, rootlesskit, slirp4netns, fuse-overlayfs, nixosTests
-      , clientOnly ? !stdenv.isLinux, symlinkJoin
+      , clientOnly ? !stdenv.hostPlatform.isLinux, symlinkJoin
       , withSystemd ? lib.meta.availableOn stdenv.hostPlatform systemd, systemd
-      , withBtrfs ? stdenv.isLinux, btrfs-progs
-      , withLvm ? stdenv.isLinux, lvm2
-      , withSeccomp ? stdenv.isLinux, libseccomp
+      , withBtrfs ? stdenv.hostPlatform.isLinux, btrfs-progs
+      , withLvm ? stdenv.hostPlatform.isLinux, lvm2
+      , withSeccomp ? stdenv.hostPlatform.isLinux, libseccomp
       , knownVulnerabilities ? []
     }:
   let
@@ -80,7 +80,7 @@ rec {
       hash = mobyHash;
     };
 
-    moby = buildGoModule (lib.optionalAttrs stdenv.isLinux rec {
+    moby = buildGoModule (lib.optionalAttrs stdenv.hostPlatform.isLinux rec {
       pname = "moby";
       inherit version;
 
@@ -95,9 +95,9 @@ rec {
         ++ lib.optional withSystemd systemd
         ++ lib.optional withSeccomp libseccomp;
 
-      extraPath = lib.optionals stdenv.isLinux (lib.makeBinPath [ iproute2 iptables e2fsprogs xz xfsprogs procps util-linux git ]);
+      extraPath = lib.optionals stdenv.hostPlatform.isLinux (lib.makeBinPath [ iproute2 iptables e2fsprogs xz xfsprogs procps util-linux git ]);
 
-      extraUserPath = lib.optionals (stdenv.isLinux && !clientOnly) (lib.makeBinPath [ rootlesskit slirp4netns fuse-overlayfs ]);
+      extraUserPath = lib.optionals (stdenv.hostPlatform.isLinux && !clientOnly) (lib.makeBinPath [ rootlesskit slirp4netns fuse-overlayfs ]);
 
       patches = lib.optionals (lib.versionOlder version "23") [
         # This patch incorporates code from a PR fixing using buildkit with the ZFS graph driver.
@@ -188,7 +188,7 @@ rec {
       makeWrapper pkg-config go-md2man go libtool installShellFiles
     ];
 
-    buildInputs = plugins ++ lib.optionals (lib.versionAtLeast version "23" && stdenv.isLinux) [
+    buildInputs = plugins ++ lib.optionals (lib.versionAtLeast version "23" && stdenv.hostPlatform.isLinux) [
       glibc
       glibc.static
     ];
diff --git a/pkgs/applications/virtualization/krunvm/default.nix b/pkgs/applications/virtualization/krunvm/default.nix
index d6da5a2742f5..392ba594189a 100644
--- a/pkgs/applications/virtualization/krunvm/default.nix
+++ b/pkgs/applications/virtualization/krunvm/default.nix
@@ -35,9 +35,9 @@ stdenv.mkDerivation rec {
     rustc
     asciidoctor
     makeWrapper
-  ] ++ lib.optionals stdenv.isDarwin [ sigtool ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ sigtool ];
 
-  buildInputs = [ libkrun ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ libkrun ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ];
 
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
 
   # It attaches entitlements with codesign and strip removes those,
   # voiding the entitlements and making it non-operational.
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   postFixup = ''
     wrapProgram $out/bin/krunvm \
diff --git a/pkgs/applications/virtualization/lima/bin.nix b/pkgs/applications/virtualization/lima/bin.nix
index 7549f0c1528b..ca45c58ff219 100644
--- a/pkgs/applications/virtualization/lima/bin.nix
+++ b/pkgs/applications/virtualization/lima/bin.nix
@@ -48,7 +48,7 @@ stdenvNoCC.mkDerivation {
   sourceRoot = ".";
 
   nativeBuildInputs = [ makeBinaryWrapper installShellFiles ]
-    ++ lib.optionals stdenvNoCC.isLinux [ autoPatchelfHook ];
+    ++ lib.optionals stdenvNoCC.hostPlatform.isLinux [ autoPatchelfHook ];
 
   installPhase = ''
     runHook preInstall
@@ -79,7 +79,7 @@ stdenvNoCC.mkDerivation {
 
   # Stripping removes entitlements of the binary on Darwin making it non-operational.
   # Therefore, disable stripping on Darwin.
-  dontStrip = stdenvNoCC.isDarwin;
+  dontStrip = stdenvNoCC.hostPlatform.isDarwin;
 
   passthru.updateScript =
     let
diff --git a/pkgs/applications/virtualization/lima/default.nix b/pkgs/applications/virtualization/lima/default.nix
index c57b58a008b3..318d54c77c41 100644
--- a/pkgs/applications/virtualization/lima/default.nix
+++ b/pkgs/applications/virtualization/lima/default.nix
@@ -23,7 +23,7 @@ buildGoModule rec {
   vendorHash = "sha256-P0Qnfu/cqLveAwz9jf/wTXxkoh0jvazlE5C/PcUrWsA=";
 
   nativeBuildInputs = [ makeWrapper installShellFiles ]
-    ++ lib.optionals stdenv.isDarwin [ xcbuild.xcrun sigtool ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcbuild.xcrun sigtool ];
 
   # clean fails with read only vendor dir
   postPatch = ''
@@ -34,7 +34,7 @@ buildGoModule rec {
 
   # It attaches entitlements with codesign and strip removes those,
   # voiding the entitlements and making it non-operational.
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   buildPhase = ''
     runHook preBuild
diff --git a/pkgs/applications/virtualization/lkl/default.nix b/pkgs/applications/virtualization/lkl/default.nix
index c889dc5ff50a..751cbd021fc2 100644
--- a/pkgs/applications/virtualization/lkl/default.nix
+++ b/pkgs/applications/virtualization/lkl/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
 
     # Fixup build with newer Linux headers: https://github.com/lkl/linux/pull/484
     sed '1i#include <linux/sockios.h>' -i tools/lkl/lib/hijack/xlate.c
-  '' + lib.optionalString stdenv.isi686 ''
+  '' + lib.optionalString stdenv.hostPlatform.isi686 ''
     echo CONFIG_KALLSYMS=n >> arch/lkl/configs/defconfig
     echo CONFIG_KALLSYMS_BASE_RELATIVE=n >> arch/lkl/configs/defconfig
   '' + lib.optionalString firewallSupport ''
diff --git a/pkgs/applications/virtualization/podman-desktop/default.nix b/pkgs/applications/virtualization/podman-desktop/default.nix
index 015768b4ed7c..ce7d993d39de 100644
--- a/pkgs/applications/virtualization/podman-desktop/default.nix
+++ b/pkgs/applications/virtualization/podman-desktop/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation (finalAttrs: {
     makeWrapper
     copyDesktopItems
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     desktopToDarwinBundle
   ];
 
diff --git a/pkgs/applications/virtualization/podman/default.nix b/pkgs/applications/virtualization/podman/default.nix
index 9a714054aa97..95bd221a3fb9 100644
--- a/pkgs/applications/virtualization/podman/default.nix
+++ b/pkgs/applications/virtualization/podman/default.nix
@@ -22,7 +22,7 @@
 , crun
 , runc
 , conmon
-, extraRuntimes ? lib.optionals stdenv.isLinux [ runc ]  # e.g.: runc, gvisor, youki
+, extraRuntimes ? lib.optionals stdenv.hostPlatform.isLinux [ runc ]  # e.g.: runc, gvisor, youki
 , fuse-overlayfs
 , util-linux
 , iptables
@@ -39,12 +39,12 @@
 let
   # do not add qemu to this wrapper, store paths get written to the podman vm config and break when GCed
 
-  binPath = lib.makeBinPath (lib.optionals stdenv.isLinux [
+  binPath = lib.makeBinPath (lib.optionals stdenv.hostPlatform.isLinux [
     fuse-overlayfs
     util-linux
     iptables
     iproute2
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     vfkit
   ] ++ extraPackages);
 
@@ -54,7 +54,7 @@ let
     # this only works for some binaries, others may need to be added to `binPath` or in the modules
     paths = [
       gvproxy
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       aardvark-dns
       catatonit # added here for the pause image and also set in `containersConf` for `init_path`
       netavark
@@ -93,7 +93,7 @@ buildGoModule rec {
 
   nativeBuildInputs = [ pkg-config go-md2man installShellFiles makeWrapper python3 ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     btrfs-progs
     gpgme
     libapparmor
@@ -110,7 +110,7 @@ buildGoModule rec {
     runHook preBuild
     patchShebangs .
     substituteInPlace Makefile --replace "/bin/bash" "${runtimeShell}"
-    ${if stdenv.isDarwin then ''
+    ${if stdenv.hostPlatform.isDarwin then ''
       make podman-remote # podman-mac-helper uses FHS paths
     '' else ''
       make bin/podman bin/rootlessport bin/quadlet
@@ -121,7 +121,7 @@ buildGoModule rec {
 
   installPhase = ''
     runHook preInstall
-    ${if stdenv.isDarwin then ''
+    ${if stdenv.hostPlatform.isDarwin then ''
       install bin/darwin/podman -Dt $out/bin
     '' else ''
       make install.bin install.systemd
@@ -134,7 +134,7 @@ buildGoModule rec {
     runHook postInstall
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     RPATH=$(patchelf --print-rpath $out/bin/.podman-wrapped)
     patchelf --set-rpath "${lib.makeLibraryPath [ systemd ]}":$RPATH $out/bin/.podman-wrapped
   '';
@@ -144,7 +144,7 @@ buildGoModule rec {
       package = podman;
       command = "HOME=$TMPDIR podman --version";
     };
-  } // lib.optionalAttrs stdenv.isLinux {
+  } // lib.optionalAttrs stdenv.hostPlatform.isLinux {
     inherit (nixosTests) podman;
     # related modules
     inherit (nixosTests)
diff --git a/pkgs/applications/virtualization/qemu/default.nix b/pkgs/applications/virtualization/qemu/default.nix
index 6be060d44891..8625069da8b1 100644
--- a/pkgs/applications/virtualization/qemu/default.nix
+++ b/pkgs/applications/virtualization/qemu/default.nix
@@ -6,14 +6,14 @@
 , attr, libcap, libcap_ng, socat, libslirp
 , CoreServices, Cocoa, Hypervisor, Kernel, rez, setfile, vmnet
 , guestAgentSupport ? (with stdenv.hostPlatform; isLinux || isNetBSD || isOpenBSD || isSunOS || isWindows) && !minimal
-, numaSupport ? stdenv.isLinux && !stdenv.isAarch32 && !minimal, numactl
-, seccompSupport ? stdenv.isLinux && !minimal, libseccomp
+, numaSupport ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAarch32 && !minimal, numactl
+, seccompSupport ? stdenv.hostPlatform.isLinux && !minimal, libseccomp
 , alsaSupport ? lib.hasSuffix "linux" stdenv.hostPlatform.system && !nixosTestRunner && !minimal
-, pulseSupport ? !stdenv.isDarwin && !nixosTestRunner && !minimal, libpulseaudio
-, pipewireSupport ? !stdenv.isDarwin && !nixosTestRunner && !minimal, pipewire
-, sdlSupport ? !stdenv.isDarwin && !nixosTestRunner && !minimal, SDL2, SDL2_image
-, jackSupport ? !stdenv.isDarwin && !nixosTestRunner && !minimal, libjack2
-, gtkSupport ? !stdenv.isDarwin && !xenSupport && !nixosTestRunner && !minimal, gtk3, gettext, vte, wrapGAppsHook3
+, pulseSupport ? !stdenv.hostPlatform.isDarwin && !nixosTestRunner && !minimal, libpulseaudio
+, pipewireSupport ? !stdenv.hostPlatform.isDarwin && !nixosTestRunner && !minimal, pipewire
+, sdlSupport ? !stdenv.hostPlatform.isDarwin && !nixosTestRunner && !minimal, SDL2, SDL2_image
+, jackSupport ? !stdenv.hostPlatform.isDarwin && !nixosTestRunner && !minimal, libjack2
+, gtkSupport ? !stdenv.hostPlatform.isDarwin && !xenSupport && !nixosTestRunner && !minimal, gtk3, gettext, vte, wrapGAppsHook3
 , vncSupport ? !nixosTestRunner && !minimal, libjpeg, libpng
 , smartcardSupport ? !nixosTestRunner && !minimal, libcacard
 , spiceSupport ? true && !nixosTestRunner && !minimal, spice, spice-protocol
@@ -28,7 +28,7 @@
 , libiscsiSupport ? !minimal, libiscsi
 , smbdSupport ? false, samba
 , tpmSupport ? !minimal
-, uringSupport ? stdenv.isLinux && !userOnly, liburing
+, uringSupport ? stdenv.hostPlatform.isLinux && !userOnly, liburing
 , canokeySupport ? !minimal, canokey-qemu
 , capstoneSupport ? !minimal, capstone
 , pluginsSupport ? !stdenv.hostPlatform.isStatic
@@ -39,7 +39,7 @@
 , hostCpuTargets ? (if toolsOnly
                     then [ ]
                     else if hostCpuOnly
-                    then (lib.optional stdenv.isx86_64 "i386-softmmu"
+                    then (lib.optional stdenv.hostPlatform.isx86_64 "i386-softmmu"
                           ++ ["${stdenv.hostPlatform.qemuArch}-softmmu"])
                     else null)
 , nixosTestRunner ? false
@@ -91,7 +91,7 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optionals gtkSupport [ wrapGAppsHook3 ]
     ++ lib.optionals enableDocs [ python3Packages.sphinx python3Packages.sphinx-rtd-theme ]
     ++ lib.optionals hexagonSupport [ glib ]
-    ++ lib.optionals stdenv.isDarwin [ sigtool ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ sigtool ]
     ++ lib.optionals (!userOnly) [ dtc ];
 
   buildInputs = [ zlib glib pixman
@@ -99,7 +99,7 @@ stdenv.mkDerivation (finalAttrs: {
     gnutls nettle curl libslirp
   ]
     ++ lib.optionals ncursesSupport [ ncurses ]
-    ++ lib.optionals stdenv.isDarwin [ CoreServices Cocoa Hypervisor Kernel rez setfile vmnet ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices Cocoa Hypervisor Kernel rez setfile vmnet ]
     ++ lib.optionals seccompSupport [ libseccomp ]
     ++ lib.optionals numaSupport [ numactl ]
     ++ lib.optionals alsaSupport [ alsa-lib ]
@@ -112,8 +112,8 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optionals smartcardSupport [ libcacard ]
     ++ lib.optionals spiceSupport [ spice-protocol spice ]
     ++ lib.optionals usbredirSupport [ usbredir ]
-    ++ lib.optionals stdenv.isLinux [ libcap_ng libcap attr ]
-    ++ lib.optionals (stdenv.isLinux && !userOnly) [ libaio ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libcap_ng libcap attr ]
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && !userOnly) [ libaio ]
     ++ lib.optionals xenSupport [ xen ]
     ++ lib.optionals cephSupport [ ceph ]
     ++ lib.optionals glusterfsSupport [ glusterfs libuuid ]
@@ -132,7 +132,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   outputs = [ "out" ] ++ lib.optional guestAgentSupport "ga";
   # On aarch64-linux we would shoot over the Hydra's 2G output limit.
-  separateDebugInfo = !(stdenv.isAarch64 && stdenv.isLinux);
+  separateDebugInfo = !(stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux);
 
   patches = [
     ./fix-qemu-ga.patch
@@ -179,8 +179,8 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optional spiceSupport "--enable-spice"
     ++ lib.optional usbredirSupport "--enable-usb-redir"
     ++ lib.optional (hostCpuTargets != null) "--target-list=${lib.concatStringsSep "," hostCpuTargets}"
-    ++ lib.optionals stdenv.isDarwin [ "--enable-cocoa" "--enable-hvf" ]
-    ++ lib.optional (stdenv.isLinux && !userOnly) "--enable-linux-aio"
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "--enable-cocoa" "--enable-hvf" ]
+    ++ lib.optional (stdenv.hostPlatform.isLinux && !userOnly) "--enable-linux-aio"
     ++ lib.optional gtkSupport "--enable-gtk"
     ++ lib.optional xenSupport "--enable-xen"
     ++ lib.optional cephSupport "--enable-rbd"
@@ -204,7 +204,7 @@ stdenv.mkDerivation (finalAttrs: {
   # voiding the entitlements and making it non-operational.
   # The alternative is to re-sign with entitlements after stripping:
   # * https://github.com/qemu/qemu/blob/v6.1.0/scripts/entitlement.sh#L25
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   postFixup = ''
     # the .desktop is both invalid and pointless
@@ -260,7 +260,7 @@ stdenv.mkDerivation (finalAttrs: {
     # xattrs are not allowed in the sandbox
     substituteInPlace ../tests/qtest/virtio-9p-test.c \
       --replace-fail mapped-xattr mapped-file
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # skip test that stalls on darwin, perhaps due to subtle differences
     # in fifo behaviour
     substituteInPlace ../tests/unit/meson.build \
diff --git a/pkgs/applications/virtualization/rvvm/default.nix b/pkgs/applications/virtualization/rvvm/default.nix
index 2d6b7d3da0c5..4693999e8f11 100644
--- a/pkgs/applications/virtualization/rvvm/default.nix
+++ b/pkgs/applications/virtualization/rvvm/default.nix
@@ -15,7 +15,7 @@
 
 assert lib.assertMsg (builtins.elem guiBackend ["sdl" "x11" "none"]) "Unsupported GUI backend";
 assert lib.assertMsg (!(enableSDL && enableX11)) "RVVM can have only one GUI backend at a time";
-assert lib.assertMsg (stdenv.isDarwin -> !enableX11) "macOS supports only SDL GUI backend";
+assert lib.assertMsg (stdenv.hostPlatform.isDarwin -> !enableX11) "macOS supports only SDL GUI backend";
 
 stdenv.mkDerivation rec {
   pname = "rvvm";
diff --git a/pkgs/applications/virtualization/sail-riscv/default.nix b/pkgs/applications/virtualization/sail-riscv/default.nix
index cda1f5d6cb20..ba98f6b2cd5a 100644
--- a/pkgs/applications/virtualization/sail-riscv/default.nix
+++ b/pkgs/applications/virtualization/sail-riscv/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/riscv/sail-riscv";
     description = "Formal specification of the RISC-V architecture, written in Sail";
     maintainers = with maintainers; [ genericnerdyusername ];
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
     license = licenses.bsd2;
   };
 }
diff --git a/pkgs/applications/virtualization/virt-manager/default.nix b/pkgs/applications/virtualization/virt-manager/default.nix
index 228c2ed6cb9f..2b230a95b504 100644
--- a/pkgs/applications/virtualization/virt-manager/default.nix
+++ b/pkgs/applications/virtualization/virt-manager/default.nix
@@ -45,7 +45,7 @@ python3.pkgs.buildPythonApplication rec {
     gobject-introspection # for setup hook populating GI_TYPELIB_PATH
     docutils
     wrapGAppsHook3
-  ] ++ lib.optional stdenv.isDarwin desktopToDarwinBundle;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   buildInputs = [
     gst_all_1.gst-plugins-base
diff --git a/pkgs/applications/virtualization/virt-viewer/default.nix b/pkgs/applications/virtualization/virt-viewer/default.nix
index a4e32f618a04..2c368db8da94 100644
--- a/pkgs/applications/virtualization/virt-viewer/default.nix
+++ b/pkgs/applications/virtualization/virt-viewer/default.nix
@@ -79,7 +79,7 @@ stdenv.mkDerivation rec {
     gdbm
     spice-gtk
     spice-protocol
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libcap
   ]);
 
diff --git a/pkgs/applications/virtualization/virtualbox/default.nix b/pkgs/applications/virtualization/virtualbox/default.nix
index 3f27170311cd..437ceba29ce0 100644
--- a/pkgs/applications/virtualization/virtualbox/default.nix
+++ b/pkgs/applications/virtualization/virtualbox/default.nix
@@ -13,7 +13,7 @@
 , javaBindings ? true, jdk # Almost doesn't affect closure size
 , pythonBindings ? false, python3
 , extensionPack ? null, fakeroot
-, pulseSupport ? config.pulseaudio or stdenv.isLinux, libpulseaudio
+, pulseSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux, libpulseaudio
 , enableHardening ? false
 , headless ? false
 , enable32bitGuests ? true
diff --git a/pkgs/applications/virtualization/xhyve/default.nix b/pkgs/applications/virtualization/xhyve/default.nix
index 2d66f8351411..a9119975a7ae 100644
--- a/pkgs/applications/virtualization/xhyve/default.nix
+++ b/pkgs/applications/virtualization/xhyve/default.nix
@@ -34,6 +34,6 @@ stdenv.mkDerivation rec {
     license = licenses.bsd2;
     platforms = platforms.darwin;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/applications/window-managers/hyprwm/hypr/default.nix b/pkgs/applications/window-managers/hyprwm/hypr/default.nix
index 3952256b8d41..b24c905478e4 100644
--- a/pkgs/applications/window-managers/hyprwm/hypr/default.nix
+++ b/pkgs/applications/window-managers/hyprwm/hypr/default.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   # src/ewmh/ewmh.cpp:67:28: error: non-constant-expression cannot be narrowed from type 'int' to 'uint32_t' (aka 'unsigned int') in initializer list
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-c++11-narrowing";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-c++11-narrowing";
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/applications/window-managers/hyprwm/hyprpaper/default.nix b/pkgs/applications/window-managers/hyprwm/hyprpaper/default.nix
index e0b1b0e20723..771b3b1841a5 100644
--- a/pkgs/applications/window-managers/hyprwm/hyprpaper/default.nix
+++ b/pkgs/applications/window-managers/hyprwm/hyprpaper/default.nix
@@ -88,7 +88,7 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.bsd3;
     maintainers = with maintainers; [ wozeparrot fufexan ];
     inherit (wayland.meta) platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "hyprpaper";
   };
 })
diff --git a/pkgs/applications/window-managers/i3/default.nix b/pkgs/applications/window-managers/i3/default.nix
index 9b66a3279f8d..acb05f4ac771 100644
--- a/pkgs/applications/window-managers/i3/default.nix
+++ b/pkgs/applications/window-managers/i3/default.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
   '';
 
   # xvfb-run is available only on Linux
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
 
   checkPhase = ''
     test_failed=
diff --git a/pkgs/applications/window-managers/i3/lock-blur.nix b/pkgs/applications/window-managers/i3/lock-blur.nix
index e3eabc547b5f..dc8e8250135b 100644
--- a/pkgs/applications/window-managers/i3/lock-blur.nix
+++ b/pkgs/applications/window-managers/i3/lock-blur.nix
@@ -29,6 +29,6 @@ i3lock-color.overrideAttrs (oldAttrs : rec {
     license = licenses.bsd3;
     maintainers = with maintainers; [ dan4ik605743 ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/i3lock-blur.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/i3lock-blur.x86_64-darwin
   };
 })
diff --git a/pkgs/applications/window-managers/i3/lock-color.nix b/pkgs/applications/window-managers/i3/lock-color.nix
index 584e13f55369..5a4c12a4474a 100644
--- a/pkgs/applications/window-managers/i3/lock-color.nix
+++ b/pkgs/applications/window-managers/i3/lock-color.nix
@@ -57,6 +57,6 @@ stdenv.mkDerivation rec {
     license = licenses.bsd3;
 
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/applications/window-managers/owl/default.nix b/pkgs/applications/window-managers/owl/default.nix
index 812e65830b33..15ba9de7d753 100644
--- a/pkgs/applications/window-managers/owl/default.nix
+++ b/pkgs/applications/window-managers/owl/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation {
   };
 
   # use pregenerated nib files because generating them requires Xcode
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i "/ibtool/d" configure
     mkdir -p build/Owl.app/Contents/Resources/English.lproj
     cp ${./mac/MainMenu.nib} build/Owl.app/Contents/Resources/English.lproj/MainMenu.nib
@@ -37,10 +37,10 @@ stdenv.mkDerivation {
   nativeBuildInputs = [
     makeWrapper
     wayland-scanner
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.DarwinTools
     darwin.bootstrap_cmds
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     gnustep.make
     gnustep.wrapGNUstepAppsHook
   ];
@@ -48,9 +48,9 @@ stdenv.mkDerivation {
   buildInputs = [
     libxkbcommon
     wayland
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     gnustep.back
     gnustep.base
     gnustep.gui
@@ -64,14 +64,14 @@ stdenv.mkDerivation {
   configureScript = "../configure";
 
   # error: "Your gnustep-base was configured for the objc-nonfragile-abi but you are not using it now."
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (!stdenv.isDarwin) "-fobjc-runtime=gnustep-2.0";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (!stdenv.hostPlatform.isDarwin) "-fobjc-runtime=gnustep-2.0";
 
   installPhase = ''
     runHook preInstall
 
     mkdir -p $out/{Applications,bin}
     mv Owl.app $out/Applications
-    makeWrapper $out/{Applications/Owl.app${lib.optionalString stdenv.isDarwin "/Contents/MacOS"},bin}/Owl
+    makeWrapper $out/{Applications/Owl.app${lib.optionalString stdenv.hostPlatform.isDarwin "/Contents/MacOS"},bin}/Owl
 
     runHook postInstall
   '';
diff --git a/pkgs/applications/window-managers/spectrwm/default.nix b/pkgs/applications/window-managers/spectrwm/default.nix
index 1678e5954846..52b413452e82 100644
--- a/pkgs/applications/window-managers/spectrwm/default.nix
+++ b/pkgs/applications/window-managers/spectrwm/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation (finalAttrs: {
   ] ++ [ libbsd ]);
 
   prePatch = let
-    subdir = if stdenv.isDarwin then "osx" else "linux";
+    subdir = if stdenv.hostPlatform.isDarwin then "osx" else "linux";
   in "cd ${subdir}";
 
   makeFlags = [ "PREFIX=${placeholder "out"}" ];
diff --git a/pkgs/build-support/add-driver-runpath/default.nix b/pkgs/build-support/add-driver-runpath/default.nix
index 08547a4453c5..56026b1fc908 100644
--- a/pkgs/build-support/add-driver-runpath/default.nix
+++ b/pkgs/build-support/add-driver-runpath/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
 
   # Named "opengl-driver" for legacy reasons, but it is the path to
   # hardware drivers installed by NixOS
-  driverLink = "/run/opengl-driver" + lib.optionalString stdenv.isi686 "-32";
+  driverLink = "/run/opengl-driver" + lib.optionalString stdenv.hostPlatform.isi686 "-32";
 
   buildCommand = ''
     mkdir -p $out/nix-support
diff --git a/pkgs/build-support/agda/default.nix b/pkgs/build-support/agda/default.nix
index ec0dfe7cc144..12dfdc4b5122 100644
--- a/pkgs/build-support/agda/default.nix
+++ b/pkgs/build-support/agda/default.nix
@@ -109,7 +109,7 @@ let
         # darwin, it seems that there is no standard such locale; luckily,
         # the referenced issue doesn't seem to surface on darwin. Hence let's
         # set this only on non-darwin.
-        LC_ALL = optionalString (!stdenv.isDarwin) "C.UTF-8";
+        LC_ALL = optionalString (!stdenv.hostPlatform.isDarwin) "C.UTF-8";
 
         meta = if meta.broken or false then meta // { hydraPlatforms = platforms.none; } else meta;
 
diff --git a/pkgs/build-support/alternatives/lapack/default.nix b/pkgs/build-support/alternatives/lapack/default.nix
index 2d62855b258a..983d59ac6f60 100644
--- a/pkgs/build-support/alternatives/lapack/default.nix
+++ b/pkgs/build-support/alternatives/lapack/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation {
   };
 
   # TODO: drop this forced rebuild, as it was needed just once.
-  rebuild_salt = if stdenv.isDarwin && stdenv.isx86_64 then "J4AQ" else null;
+  rebuild_salt = if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64 then "J4AQ" else null;
 
   dontBuild = true;
   dontConfigure = true;
diff --git a/pkgs/build-support/build-bazel-package/default.nix b/pkgs/build-support/build-bazel-package/default.nix
index e752ccdb7dfc..1131f73a1836 100644
--- a/pkgs/build-support/build-bazel-package/default.nix
+++ b/pkgs/build-support/build-bazel-package/default.nix
@@ -181,7 +181,7 @@ stdenv.mkDerivation (fBuildAttrs // {
         new_target="$(readlink "$symlink" | sed "s,$NIX_BUILD_TOP,NIX_BUILD_TOP,")"
         rm "$symlink"
         ln -sf "$new_target" "$symlink"
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
         # on linux symlink permissions cannot be modified, so we modify those on darwin to match the linux ones
         ${chmodder}/bin/chmodder "$symlink"
     '' + ''
diff --git a/pkgs/build-support/build-fhsenv-bubblewrap/buildFHSEnv.nix b/pkgs/build-support/build-fhsenv-bubblewrap/buildFHSEnv.nix
index 67931a07dd40..6dfbaae3e5de 100644
--- a/pkgs/build-support/build-fhsenv-bubblewrap/buildFHSEnv.nix
+++ b/pkgs/build-support/build-fhsenv-bubblewrap/buildFHSEnv.nix
@@ -34,7 +34,7 @@
 # /lib will link to /lib32
 
 let
-  inherit (stdenv) is64bit;
+  inherit (stdenv.hostPlatform) is64bit;
 
   name = if (args ? pname && args ? version)
     then "${args.pname}-${args.version}"
diff --git a/pkgs/build-support/build-graalvm-native-image/default.nix b/pkgs/build-support/build-graalvm-native-image/default.nix
index f0e73901c8db..0ac84b000575 100644
--- a/pkgs/build-support/build-graalvm-native-image/default.nix
+++ b/pkgs/build-support/build-graalvm-native-image/default.nix
@@ -11,8 +11,8 @@
   # Default native-image arguments. You probably don't want to set this,
   # except in special cases. In most cases, use extraNativeBuildArgs instead
 , nativeImageBuildArgs ? [
-    (lib.optionalString stdenv.isDarwin "-H:-CheckToolchain")
-    (lib.optionalString (stdenv.isLinux && stdenv.isAarch64) "-H:PageSize=64K")
+    (lib.optionalString stdenv.hostPlatform.isDarwin "-H:-CheckToolchain")
+    (lib.optionalString (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) "-H:PageSize=64K")
     "-H:Name=${executable}"
     "-march=compatibility"
     "--verbose"
diff --git a/pkgs/build-support/dart/build-dart-application/default.nix b/pkgs/build-support/dart/build-dart-application/default.nix
index c99b8bbf325e..bd1d2ac1b49c 100644
--- a/pkgs/build-support/dart/build-dart-application/default.nix
+++ b/pkgs/build-support/dart/build-dart-application/default.nix
@@ -104,7 +104,7 @@ let
       dartFixupHook
       makeWrapper
       jq
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.sigtool
     ] ++
       # Ensure that we inherit the propagated build inputs from the dependencies.
diff --git a/pkgs/build-support/docker/default.nix b/pkgs/build-support/docker/default.nix
index 8e7371728029..033bce988ae9 100644
--- a/pkgs/build-support/docker/default.nix
+++ b/pkgs/build-support/docker/default.nix
@@ -924,7 +924,7 @@ rec {
       (lib.assertMsg (maxLayers > 1)
         "the maxLayers argument of dockerTools.buildLayeredImage function must be greather than 1 (current value: ${toString maxLayers})");
       assert
-      (lib.assertMsg (enableFakechroot -> !stdenv.isDarwin) ''
+      (lib.assertMsg (enableFakechroot -> !stdenv.hostPlatform.isDarwin) ''
         cannot use `enableFakechroot` because `proot` is not portable to Darwin. Workarounds:
               - use `fakeRootCommands` with the restricted `fakeroot` environment
               - cross-compile your packages
diff --git a/pkgs/build-support/dotnet/fetch-nupkg/overrides.nix b/pkgs/build-support/dotnet/fetch-nupkg/overrides.nix
index 76e241c0cd3a..923f8b4e917d 100644
--- a/pkgs/build-support/dotnet/fetch-nupkg/overrides.nix
+++ b/pkgs/build-support/dotnet/fetch-nupkg/overrides.nix
@@ -53,7 +53,7 @@
     package:
     package.overrideAttrs (
       old:
-      lib.optionalAttrs (!stdenv.isDarwin) {
+      lib.optionalAttrs (!stdenv.hostPlatform.isDarwin) {
         setupHook = writeText "setupHook.sh" ''
           prependToVar dotnetRuntimeDeps \
             "${lib.getLib libICE}" \
@@ -67,7 +67,7 @@
     package:
     package.overrideAttrs (
       old:
-      lib.optionalAttrs stdenv.isLinux {
+      lib.optionalAttrs stdenv.hostPlatform.isLinux {
         nativeBuildInputs = old.nativeBuildInputs or [ ] ++ [ autoPatchelfHook ];
 
         buildInputs = old.buildInputs or [ ] ++ [ fontconfig ];
diff --git a/pkgs/build-support/libredirect/default.nix b/pkgs/build-support/libredirect/default.nix
index 999824167388..1b8ebcaeacdd 100644
--- a/pkgs/build-support/libredirect/default.nix
+++ b/pkgs/build-support/libredirect/default.nix
@@ -32,7 +32,7 @@ else stdenv.mkDerivation rec {
   buildPhase = ''
     runHook preBuild
 
-    ${if stdenv.isDarwin && stdenv.isAarch64 then ''
+    ${if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 then ''
     # We need the unwrapped binutils and clang:
     # We also want to build a fat library with x86_64, arm64, arm64e in there.
     # Because we use the unwrapped tools, we need to provide -isystem for headers
@@ -47,7 +47,7 @@ else stdenv.mkDerivation rec {
       -Wl,-install_name,$libName \
       -Wall -std=c99 -O3 -fPIC libredirect.c \
       -shared -o "$libName"
-    '' else if stdenv.isDarwin then ''
+    '' else if stdenv.hostPlatform.isDarwin then ''
     $CC -Wall -std=c99 -O3 -fPIC libredirect.c \
       -Wl,-install_name,$out/lib/$libName \
       -shared -o "$libName"
@@ -58,7 +58,7 @@ else stdenv.mkDerivation rec {
 
     if [ -n "$doInstallCheck" ]; then
       $CC -Wall -std=c99 \
-        ${lib.optionalString (!stdenv.isDarwin) "-D_GNU_SOURCE"} \
+        ${lib.optionalString (!stdenv.hostPlatform.isDarwin) "-D_GNU_SOURCE"} \
         -O3 test.c -o test
     fi
 
@@ -75,7 +75,7 @@ else stdenv.mkDerivation rec {
 
     install -vD "$libName" "$out/lib/$libName"
 
-  '' + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     # dylib will be rejected unless dylib rpath gets explictly set
     install_name_tool \
       -change $libName $out/lib/$libName \
@@ -84,7 +84,7 @@ else stdenv.mkDerivation rec {
     # Provide a setup hook that injects our library into every process.
     mkdir -p "$hook/nix-support"
     cat <<SETUP_HOOK > "$hook/nix-support/setup-hook"
-    ${if stdenv.isDarwin then ''
+    ${if stdenv.hostPlatform.isDarwin then ''
     export DYLD_INSERT_LIBRARIES="$out/lib/$libName"
     '' else ''
     export LD_PRELOAD="$out/lib/$libName"
diff --git a/pkgs/build-support/mitm-cache/default.nix b/pkgs/build-support/mitm-cache/default.nix
index dd44a7ddca9a..e3bce225b46b 100644
--- a/pkgs/build-support/mitm-cache/default.nix
+++ b/pkgs/build-support/mitm-cache/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-l9dnyA4Zo4jlbiCMRzUqW3NkiploVpmvxz9i896JkXU=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/build-support/node/build-npm-package/default.nix b/pkgs/build-support/node/build-npm-package/default.nix
index 4bcbf3f14f2f..52b4f5a30e2a 100644
--- a/pkgs/build-support/node/build-npm-package/default.nix
+++ b/pkgs/build-support/node/build-npm-package/default.nix
@@ -76,7 +76,7 @@ stdenv.mkDerivation (args // {
       (if npmInstallHook != null then npmInstallHook else npmHooks.npmInstallHook)
       nodejs.python
     ]
-    ++ lib.optionals stdenv.isDarwin [ cctools ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools ];
   buildInputs = buildInputs ++ [ nodejs ];
 
   strictDeps = true;
diff --git a/pkgs/build-support/rust/build-rust-crate/default.nix b/pkgs/build-support/rust/build-rust-crate/default.nix
index 313e7601f617..db9c2d784f6b 100644
--- a/pkgs/build-support/rust/build-rust-crate/default.nix
+++ b/pkgs/build-support/rust/build-rust-crate/default.nix
@@ -283,7 +283,7 @@ crate_: lib.makeOverridable
         ++ lib.optionals stdenv.hasCC [ stdenv.cc ]
         ++ lib.optionals stdenv.buildPlatform.isDarwin [ libiconv ]
         ++ (crate.nativeBuildInputs or [ ]) ++ nativeBuildInputs_;
-      buildInputs = lib.optionals stdenv.isDarwin [ libiconv ] ++ (crate.buildInputs or [ ]) ++ buildInputs_;
+      buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ] ++ (crate.buildInputs or [ ]) ++ buildInputs_;
       dependencies = map lib.getLib dependencies_;
       buildDependencies = map lib.getLib buildDependencies_;
 
diff --git a/pkgs/build-support/rust/build-rust-crate/test/default.nix b/pkgs/build-support/rust/build-rust-crate/test/default.nix
index dd135af91965..6069ef802dde 100644
--- a/pkgs/build-support/rust/build-rust-crate/test/default.nix
+++ b/pkgs/build-support/rust/build-rust-crate/test/default.nix
@@ -529,7 +529,7 @@ let
             # Note: On darwin (which defaults to clang) we have to add
             # `-undefined dynamic_lookup` as otherwise the compilation fails.
             $CC -shared \
-              ${lib.optionalString stdenv.isDarwin "-undefined dynamic_lookup"} \
+              ${lib.optionalString stdenv.hostPlatform.isDarwin "-undefined dynamic_lookup"} \
               -o $out/lib/${name}${stdenv.hostPlatform.extensions.library} ${src}
           '';
           b = compile "libb" ''
@@ -626,7 +626,7 @@ let
       };
       expectedFiles = [
         "./bin/test_binary1"
-      ] ++ lib.optionals stdenv.isDarwin [
+      ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
         # On Darwin, the debug symbols are in a separate directory.
         "./bin/test_binary1.dSYM/Contents/Info.plist"
         "./bin/test_binary1.dSYM/Contents/Resources/DWARF/test_binary1"
diff --git a/pkgs/build-support/rust/default-crate-overrides.nix b/pkgs/build-support/rust/default-crate-overrides.nix
index 126be2ad99eb..21ca75357fbb 100644
--- a/pkgs/build-support/rust/default-crate-overrides.nix
+++ b/pkgs/build-support/rust/default-crate-overrides.nix
@@ -72,7 +72,7 @@ in
 
   cargo = attrs: {
     buildInputs = [ openssl zlib curl ]
-      ++ lib.optionals stdenv.isDarwin [ CoreFoundation Security ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreFoundation Security ];
   };
 
   libz-sys = attrs: {
@@ -281,7 +281,7 @@ in
   };
 
   security-framework-sys = attr: {
-    propagatedBuildInputs = lib.optional stdenv.isDarwin Security;
+    propagatedBuildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
   };
 
   sequoia-openpgp = attrs: {
@@ -320,7 +320,7 @@ in
   };
 
   serde_derive = attrs: {
-    buildInputs = lib.optional stdenv.isDarwin Security;
+    buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
   };
 
   servo-fontconfig-sys = attrs: {
diff --git a/pkgs/build-support/rust/lib/default.nix b/pkgs/build-support/rust/lib/default.nix
index 446760840732..322974854878 100644
--- a/pkgs/build-support/rust/lib/default.nix
+++ b/pkgs/build-support/rust/lib/default.nix
@@ -15,7 +15,7 @@ rec {
   envVars = let
 
     # As a workaround for https://github.com/rust-lang/rust/issues/89626 use lld on pkgsStatic aarch64
-    shouldUseLLD = platform: platform.isAarch64 && platform.isStatic && !stdenv.isDarwin;
+    shouldUseLLD = platform: platform.isAarch64 && platform.isStatic && !stdenv.hostPlatform.isDarwin;
 
     ccForBuild = "${pkgsBuildHost.stdenv.cc}/bin/${pkgsBuildHost.stdenv.cc.targetPrefix}cc";
     cxxForBuild = "${pkgsBuildHost.stdenv.cc}/bin/${pkgsBuildHost.stdenv.cc.targetPrefix}c++";
diff --git a/pkgs/build-support/rust/test/import-cargo-lock/git-dependency-rev-non-workspace-nested-crate/default.nix b/pkgs/build-support/rust/test/import-cargo-lock/git-dependency-rev-non-workspace-nested-crate/default.nix
index 63e3bea3ca1f..b616b293fa39 100644
--- a/pkgs/build-support/rust/test/import-cargo-lock/git-dependency-rev-non-workspace-nested-crate/default.nix
+++ b/pkgs/build-support/rust/test/import-cargo-lock/git-dependency-rev-non-workspace-nested-crate/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/build-support/setup-hooks/wrap-gapps-hook/default.nix b/pkgs/build-support/setup-hooks/wrap-gapps-hook/default.nix
index 69f9f3b145d7..b2ce7b4b2654 100644
--- a/pkgs/build-support/setup-hooks/wrap-gapps-hook/default.nix
+++ b/pkgs/build-support/setup-hooks/wrap-gapps-hook/default.nix
@@ -35,7 +35,7 @@ makeSetupHook {
 
     # TODO: remove this, packages should depend on GTK explicitly.
     gtk3
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     # It is highly probable that a program will use GSettings,
     # at minimum through GTK file chooser dialogue.
     # Let’s add a GIO module for “dconf” GSettings backend
@@ -68,7 +68,7 @@ makeSetupHook {
       basic-contains-dconf = let
         tested = basic;
       in testLib.runTest "basic-contains-dconf" (
-        testLib.skip stdenv.isDarwin ''
+        testLib.skip stdenv.hostPlatform.isDarwin ''
           ${expectSomeLineContainingYInFileXToMentionZ "${tested}/bin/foo" "GIO_EXTRA_MODULES" "${dconf.lib}/lib/gio/modules"}
           ${expectSomeLineContainingYInFileXToMentionZ "${tested}/libexec/bar" "GIO_EXTRA_MODULES" "${dconf.lib}/lib/gio/modules"}
         ''
@@ -77,7 +77,7 @@ makeSetupHook {
       basic-contains-gdk-pixbuf = let
         tested = basic;
       in testLib.runTest "basic-contains-gdk-pixbuf" (
-        testLib.skip stdenv.isDarwin ''
+        testLib.skip stdenv.hostPlatform.isDarwin ''
           ${expectSomeLineContainingYInFileXToMentionZ "${tested}/bin/foo" "GDK_PIXBUF_MODULE_FILE" "${lib.getLib librsvg}/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache"}
           ${expectSomeLineContainingYInFileXToMentionZ "${tested}/libexec/bar" "GDK_PIXBUF_MODULE_FILE" "${lib.getLib librsvg}/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache"}
         ''
diff --git a/pkgs/build-support/writers/scripts.nix b/pkgs/build-support/writers/scripts.nix
index 81a88391f324..999c8b4f2ae4 100644
--- a/pkgs/build-support/writers/scripts.nix
+++ b/pkgs/build-support/writers/scripts.nix
@@ -131,7 +131,7 @@ rec {
             # On darwin a script cannot be used as an interpreter in a shebang but
             # there doesn't seem to be a limit to the size of shebang and multiple
             # arguments to the interpreter are allowed.
-            if [[ -n "${toString pkgs.stdenvNoCC.isDarwin}" ]] && isScript $interpreter
+            if [[ -n "${toString pkgs.stdenvNoCC.hostPlatform.isDarwin}" ]] && isScript $interpreter
             then
               wrapperInterpreterLine=$(head -1 "$interpreter" | tail -c+3)
               # Get first word from the line (note: xargs echo remove leading spaces)
@@ -753,7 +753,7 @@ rec {
       strip ? true,
     }:
     let
-      darwinArgs = lib.optionals stdenv.isDarwin [ "-L${lib.getLib libiconv}/lib" ];
+      darwinArgs = lib.optionals stdenv.hostPlatform.isDarwin [ "-L${lib.getLib libiconv}/lib" ];
     in
     makeBinWriter {
       compileScript = ''
diff --git a/pkgs/by-name/_6/_64gram/package.nix b/pkgs/by-name/_6/_64gram/package.nix
index 61b0536ce755..65ba3347eb48 100644
--- a/pkgs/by-name/_6/_64gram/package.nix
+++ b/pkgs/by-name/_6/_64gram/package.nix
@@ -41,6 +41,6 @@ telegram-desktop.overrideAttrs (old: rec {
     changelog = "https://github.com/TDesktop-x64/tdesktop/releases/tag/v${version}";
     maintainers = with maintainers; [ clot27 ];
     mainProgram = "telegram-desktop";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/_9/_9base/package.nix b/pkgs/by-name/_9/_9base/package.nix
index 580c0ad698dc..3d523c513eec 100644
--- a/pkgs/by-name/_9/_9base/package.nix
+++ b/pkgs/by-name/_9/_9base/package.nix
@@ -75,6 +75,6 @@ stdenv.mkDerivation {
     platforms = platforms.unix;
     # needs additional work to support aarch64-darwin
     # due to usage of _DARWIN_NO_64_BIT_INODE
-    broken = stdenv.isAarch64 && stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/a5/a52dec/package.nix b/pkgs/by-name/a5/a52dec/package.nix
index 048b96787a79..53cecb99ef7e 100644
--- a/pkgs/by-name/a5/a52dec/package.nix
+++ b/pkgs/by-name/a5/a52dec/package.nix
@@ -29,9 +29,9 @@ stdenv.mkDerivation rec {
 
   # fails 1 out of 1 tests with "BAD GLOBAL SYMBOLS" on i686
   # which can also be fixed with
-  # hardeningDisable = lib.optional stdenv.isi686 "pic";
+  # hardeningDisable = lib.optional stdenv.hostPlatform.isi686 "pic";
   # but it's better to disable tests than loose ASLR on i686
-  doCheck = !stdenv.isi686;
+  doCheck = !stdenv.hostPlatform.isi686;
 
   meta = with lib; {
     description = "ATSC A/52 stream decoder";
diff --git a/pkgs/by-name/ab/abctl/package.nix b/pkgs/by-name/ab/abctl/package.nix
index 226587b0b005..bd1464c550e8 100644
--- a/pkgs/by-name/ab/abctl/package.nix
+++ b/pkgs/by-name/ab/abctl/package.nix
@@ -27,6 +27,6 @@ buildGoModule {
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ xelden ];
     mainProgram = "abctl";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/ac/acpica-tools/package.nix b/pkgs/by-name/ac/acpica-tools/package.nix
index b11e95be6edc..11e6f1f454c7 100644
--- a/pkgs/by-name/ac/acpica-tools/package.nix
+++ b/pkgs/by-name/ac/acpica-tools/package.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
 
   # We can handle stripping ourselves.
   # Unless we are on Darwin. Upstream makefiles degrade coreutils install to cp if _APPLE is detected.
-  INSTALLFLAGS = lib.optionals (!stdenv.isDarwin) "-m 555";
+  INSTALLFLAGS = lib.optionals (!stdenv.hostPlatform.isDarwin) "-m 555";
 
   installFlags = [ "PREFIX=${placeholder "out"}" ];
 
diff --git a/pkgs/by-name/ae/aegisub/package.nix b/pkgs/by-name/ae/aegisub/package.nix
index 7107d548410d..da6bd3107312 100644
--- a/pkgs/by-name/ae/aegisub/package.nix
+++ b/pkgs/by-name/ae/aegisub/package.nix
@@ -38,10 +38,10 @@
   wxGTK,
   zlib,
   # Boolean guard flags
-  alsaSupport ? stdenv.isLinux,
+  alsaSupport ? stdenv.hostPlatform.isLinux,
   openalSupport ? true,
   portaudioSupport ? true,
-  pulseaudioSupport ? config.pulseaudio or stdenv.isLinux,
+  pulseaudioSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux,
   spellcheckSupport ? true,
   useBundledLuaJIT ? false,
 }:
@@ -102,12 +102,12 @@ stdenv.mkDerivation (finalAttrs: {
   ]
   ++ lib.optionals alsaSupport [ alsa-lib ]
   ++ lib.optionals openalSupport [
-    (if stdenv.isDarwin then OpenAL else openal)
+    (if stdenv.hostPlatform.isDarwin then OpenAL else openal)
   ]
   ++ lib.optionals portaudioSupport [ portaudio ]
   ++ lib.optionals pulseaudioSupport [ libpulseaudio ]
   ++ lib.optionals spellcheckSupport [ hunspell ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Carbon
     Cocoa
diff --git a/pkgs/by-name/ag/agate/package.nix b/pkgs/by-name/ag/agate/package.nix
index 8d83b45bec78..1d2763dd324a 100644
--- a/pkgs/by-name/ag/agate/package.nix
+++ b/pkgs/by-name/ag/agate/package.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       darwin.apple_sdk.frameworks.Security
     ];
diff --git a/pkgs/by-name/ag/age-plugin-fido2-hmac/package.nix b/pkgs/by-name/ag/age-plugin-fido2-hmac/package.nix
index eec840ef2197..6c9571a64d05 100644
--- a/pkgs/by-name/ag/age-plugin-fido2-hmac/package.nix
+++ b/pkgs/by-name/ag/age-plugin-fido2-hmac/package.nix
@@ -39,7 +39,7 @@ buildGoModule rec {
 
   buildInputs = [ libfido2 ];
 
-  postConfigure = lib.optional stdenv.isDarwin darwin_configure;
+  postConfigure = lib.optional stdenv.hostPlatform.isDarwin darwin_configure;
 
   meta = with lib; {
     description = "Age plugin to encrypt files with fido2 tokens using the hmac-secret extension and non-discoverable credentials";
diff --git a/pkgs/by-name/ai/aiken/package.nix b/pkgs/by-name/ai/aiken/package.nix
index 1f8186ef0015..61c66fda313a 100644
--- a/pkgs/by-name/ai/aiken/package.nix
+++ b/pkgs/by-name/ai/aiken/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         Security
diff --git a/pkgs/by-name/al/aligator/package.nix b/pkgs/by-name/al/aligator/package.nix
index 53346434be78..e7cb03a8771e 100644
--- a/pkgs/by-name/al/aligator/package.nix
+++ b/pkgs/by-name/al/aligator/package.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation (finalAttrs: {
     graphviz
     pkg-config
   ] ++ lib.optional pythonSupport python3Packages.pythonImportsCheckHook;
-  buildInputs = [ fmt ] ++ lib.optional stdenv.isDarwin llvmPackages.openmp;
+  buildInputs = [ fmt ] ++ lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp;
   propagatedBuildInputs =
     [ suitesparse ]
     ++ lib.optionals pythonSupport [
diff --git a/pkgs/by-name/am/amazon-ssm-agent/package.nix b/pkgs/by-name/am/amazon-ssm-agent/package.nix
index e19669d546b0..19fc0673355b 100644
--- a/pkgs/by-name/am/amazon-ssm-agent/package.nix
+++ b/pkgs/by-name/am/amazon-ssm-agent/package.nix
@@ -63,7 +63,7 @@ buildGoModule rec {
 
   nativeBuildInputs = [
     makeWrapper
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.DarwinTools
   ];
 
@@ -95,7 +95,7 @@ buildGoModule rec {
       --replace-fail "/sbin/shutdown" "shutdown"
 
     echo "${version}" > VERSION
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace agent/managedInstances/fingerprint/hardwareInfo_unix.go \
       --replace-fail /usr/sbin/dmidecode ${dmidecode}/bin/dmidecode
   '';
diff --git a/pkgs/by-name/am/amfora/package.nix b/pkgs/by-name/am/amfora/package.nix
index 8e9f69b0afc4..9b658386725e 100644
--- a/pkgs/by-name/am/amfora/package.nix
+++ b/pkgs/by-name/am/amfora/package.nix
@@ -13,7 +13,7 @@ buildGoModule rec {
 
   vendorHash = "sha256-T/hnlQMDOZV+QGl7xp29sBGfb4VXcXqN6PDoBFdpp4M=";
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     sed -i "s:amfora:$out/bin/amfora:" amfora.desktop
     install -Dm644 amfora.desktop -t $out/share/applications
   '';
diff --git a/pkgs/by-name/am/amp/package.nix b/pkgs/by-name/am/amp/package.nix
index ebb662ee11c8..2d0890b63d67 100644
--- a/pkgs/by-name/am/amp/package.nix
+++ b/pkgs/by-name/am/amp/package.nix
@@ -39,7 +39,7 @@ rustPlatform.buildRustPackage rec {
       xorg.libxcb
       libgit2
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         curl
diff --git a/pkgs/by-name/an/anchor/package.nix b/pkgs/by-name/an/anchor/package.nix
index 2f4d95b732bb..40276f51a2b0 100644
--- a/pkgs/by-name/an/anchor/package.nix
+++ b/pkgs/by-name/an/anchor/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/an/android-studio-tools/package.nix b/pkgs/by-name/an/android-studio-tools/package.nix
index 06af624a8e26..2b1bca479841 100644
--- a/pkgs/by-name/an/android-studio-tools/package.nix
+++ b/pkgs/by-name/an/android-studio-tools/package.nix
@@ -19,7 +19,7 @@ stdenvNoCC.mkDerivation {
 
   postPatch = ''
     find . -type f -not -path "./bin/*" -exec chmod -x {} \;
-  '' + lib.optionalString stdenvNoCC.isDarwin ''
+  '' + lib.optionalString stdenvNoCC.hostPlatform.isDarwin ''
     for f in cmdline-tools/bin/*; do
       sed -i 's|start up script for Linux|start up script for Mac|' $f
     done
diff --git a/pkgs/by-name/an/anyrun/package.nix b/pkgs/by-name/an/anyrun/package.nix
index 624beb87fe33..d7712ea43e12 100644
--- a/pkgs/by-name/an/anyrun/package.nix
+++ b/pkgs/by-name/an/anyrun/package.nix
@@ -46,9 +46,9 @@ rustPlatform.buildRustPackage rec {
     gtk3
     gtk-layer-shell
     pango
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     wayland
   ];
 
diff --git a/pkgs/by-name/ar/arcan/package.nix b/pkgs/by-name/ar/arcan/package.nix
index d472b9f13228..b31d642c703e 100644
--- a/pkgs/by-name/ar/arcan/package.nix
+++ b/pkgs/by-name/ar/arcan/package.nix
@@ -48,7 +48,7 @@
   # Boolean flags
   buildManPages ? true,
   useBuiltinLua ? true,
-  useEspeak ? !stdenv.isDarwin,
+  useEspeak ? !stdenv.hostPlatform.isDarwin,
   useStaticLibuvc ? true,
   useStaticOpenAL ? true,
   useStaticSqlite ? true,
diff --git a/pkgs/by-name/ar/arduino-cli/package.nix b/pkgs/by-name/ar/arduino-cli/package.nix
index 8d01ae38e3ec..4eb9cabebac8 100644
--- a/pkgs/by-name/ar/arduino-cli/package.nix
+++ b/pkgs/by-name/ar/arduino-cli/package.nix
@@ -47,7 +47,7 @@ let
           --replace-fail "go test" "go test -p $NIX_BUILD_CORES -skip '(${lib.concatStringsSep "|" skipTests})'"
       '';
 
-    doCheck = stdenv.isLinux;
+    doCheck = stdenv.hostPlatform.isLinux;
 
     checkPhase = ''
       runHook preCheck
@@ -60,7 +60,7 @@ let
       "-w"
       "-X github.com/arduino/arduino-cli/version.versionString=${version}"
       "-X github.com/arduino/arduino-cli/version.commit=unknown"
-    ] ++ lib.optionals stdenv.isLinux [ "-extldflags '-static'" ];
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [ "-extldflags '-static'" ];
 
     postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
       export HOME="$(mktemp -d)"
@@ -89,7 +89,7 @@ let
   };
 
 in
-if stdenv.isLinux then
+if stdenv.hostPlatform.isLinux then
   # buildFHSEnv is needed because the arduino-cli downloads compiler
   # toolchains from the internet that have their interpreters pointed at
   # /lib64/ld-linux-x86-64.so.2
diff --git a/pkgs/by-name/ar/armitage/package.nix b/pkgs/by-name/ar/armitage/package.nix
index 411d503728b5..7d704633a360 100644
--- a/pkgs/by-name/ar/armitage/package.nix
+++ b/pkgs/by-name/ar/armitage/package.nix
@@ -68,7 +68,7 @@ stdenv.mkDerivation (finalAttrs: {
     gradle
     makeWrapper
     copyDesktopItems
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     writeDarwinBundle
   ];
 
@@ -98,7 +98,7 @@ stdenv.mkDerivation (finalAttrs: {
       --prefix PATH : "${lib.makeBinPath [ jdk11 metasploit ]}"
 
     install -Dm444 dist/unix/armitage-logo.png $out/share/pixmaps/armitage.png
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p "$out/Applications/Armitage.app/Contents/MacOS"
       mkdir -p "$out/Applications/Armitage.app/Contents/Resources"
       cp dist/mac/Armitage.app/Contents/Resources/macIcon.icns $out/Applications/Armitage.app/Contents/Resources
diff --git a/pkgs/by-name/ar/arrow-cpp/package.nix b/pkgs/by-name/ar/arrow-cpp/package.nix
index 1abfe6f3b701..04a5678f38f1 100644
--- a/pkgs/by-name/ar/arrow-cpp/package.nix
+++ b/pkgs/by-name/ar/arrow-cpp/package.nix
@@ -50,13 +50,13 @@
   testers,
   enableShared ? !stdenv.hostPlatform.isStatic,
   enableFlight ? true,
-  enableJemalloc ? !stdenv.isDarwin,
+  enableJemalloc ? !stdenv.hostPlatform.isDarwin,
   enableS3 ? true,
-  enableGcs ? !stdenv.isDarwin,
+  enableGcs ? !stdenv.hostPlatform.isDarwin,
 }:
 
 assert lib.asserts.assertMsg (
-  (enableS3 && stdenv.isDarwin)
+  (enableS3 && stdenv.hostPlatform.isDarwin)
   -> (lib.versionOlder boost.version "1.69" || lib.versionAtLeast boost.version "1.70")
 ) "S3 on Darwin requires Boost != 1.69";
 
@@ -128,7 +128,7 @@ stdenv.mkDerivation (finalAttrs: {
     ninja
     autoconf # for vendored jemalloc
     flatbuffers
-  ] ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
   buildInputs =
     [
       boost
@@ -218,10 +218,10 @@ stdenv.mkDerivation (finalAttrs: {
       "-DPARQUET_REQUIRE_ENCRYPTION=ON"
     ]
     ++ lib.optionals (!enableShared) [ "-DARROW_TEST_LINKAGE=static" ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "-DCMAKE_INSTALL_RPATH=@loader_path/../lib" # needed for tools executables
     ]
-    ++ lib.optionals (!stdenv.isx86_64) [ "-DARROW_USE_SIMD=OFF" ]
+    ++ lib.optionals (!stdenv.hostPlatform.isx86_64) [ "-DARROW_USE_SIMD=OFF" ]
     ++ lib.optionals enableS3 [
       "-DAWSSDK_CORE_HEADER_FILE=${aws-sdk-cpp-arrow}/include/aws/core/Aws.h"
     ];
@@ -247,7 +247,7 @@ stdenv.mkDerivation (finalAttrs: {
           "TestS3FS.*"
           "TestS3FSGeneric.*"
         ]
-        ++ lib.optionals stdenv.isDarwin [
+        ++ lib.optionals stdenv.hostPlatform.isDarwin [
           # TODO: revisit at 12.0.0 or when
           # https://github.com/apache/arrow/commit/295c6644ca6b67c95a662410b2c7faea0920c989
           # is available, see
diff --git a/pkgs/by-name/as/asfa/package.nix b/pkgs/by-name/as/asfa/package.nix
index 428a4e4fda42..e9be2526dd72 100644
--- a/pkgs/by-name/as/asfa/package.nix
+++ b/pkgs/by-name/as/asfa/package.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   nativeBuildInputs = [
     help2man
diff --git a/pkgs/by-name/as/asl/package.nix b/pkgs/by-name/as/asl/package.nix
index 5a7ca869278a..f6cbe3f46b66 100644
--- a/pkgs/by-name/as/asl/package.nix
+++ b/pkgs/by-name/as/asl/package.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   postPatch = lib.optionalString (!buildDocs) ''
     substituteInPlace Makefile --replace "all: binaries docs" "all: binaries"
-  '' + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     substituteInPlace sysdefs.h --replace "x86_64" "aarch64"
   '';
 
diff --git a/pkgs/by-name/at/atac/package.nix b/pkgs/by-name/at/atac/package.nix
index 2a8ce471e2e1..000b41b1b904 100644
--- a/pkgs/by-name/at/atac/package.nix
+++ b/pkgs/by-name/at/atac/package.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
     [
       oniguruma
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.AppKit
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/at/atf/package.nix b/pkgs/by-name/at/atf/package.nix
index e77eb5244d6c..5edb2d6366b8 100644
--- a/pkgs/by-name/at/atf/package.nix
+++ b/pkgs/by-name/at/atf/package.nix
@@ -42,12 +42,12 @@ stdenv.mkDerivation (finalAttrs: {
         --replace-fail 'atf_test_program{name="srcdir_test"}' ""
     ''
     # These tests fail on Darwin.
-    + lib.optionalString (finalAttrs.doInstallCheck && stdenv.isDarwin) ''
+    + lib.optionalString (finalAttrs.doInstallCheck && stdenv.hostPlatform.isDarwin) ''
       substituteInPlace atf-c/detail/process_test.c \
         --replace-fail 'ATF_TP_ADD_TC(tp, status_coredump);' ""
     ''
     # This test fails on Linux.
-    + lib.optionalString (finalAttrs.doInstallCheck && stdenv.isLinux) ''
+    + lib.optionalString (finalAttrs.doInstallCheck && stdenv.hostPlatform.isLinux) ''
       substituteInPlace atf-c/detail/fs_test.c \
         --replace-fail 'ATF_TP_ADD_TC(tp, eaccess);' ""
     '';
diff --git a/pkgs/by-name/at/atlauncher/package.nix b/pkgs/by-name/at/atlauncher/package.nix
index 838df85a5782..a276dff1c787 100644
--- a/pkgs/by-name/at/atlauncher/package.nix
+++ b/pkgs/by-name/at/atlauncher/package.nix
@@ -6,8 +6,8 @@
   makeWrapper,
   stdenvNoCC,
 
-  gamemodeSupport ? stdenvNoCC.isLinux,
-  textToSpeechSupport ? stdenvNoCC.isLinux,
+  gamemodeSupport ? stdenvNoCC.hostPlatform.isLinux,
+  textToSpeechSupport ? stdenvNoCC.hostPlatform.isLinux,
   additionalLibs ? [ ],
 
   # dependencies
diff --git a/pkgs/by-name/at/attic-client/package.nix b/pkgs/by-name/at/attic-client/package.nix
index e9b89cf6d54b..aa84bd2a122f 100644
--- a/pkgs/by-name/at/attic-client/package.nix
+++ b/pkgs/by-name/at/attic-client/package.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage {
   buildInputs = [
     nix
     boost
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     SystemConfiguration
   ]);
 
diff --git a/pkgs/by-name/at/attract-mode/package.nix b/pkgs/by-name/at/attract-mode/package.nix
index 87328a78ce6f..21be9ce31441 100644
--- a/pkgs/by-name/at/attract-mode/package.nix
+++ b/pkgs/by-name/at/attract-mode/package.nix
@@ -40,11 +40,11 @@ stdenv.mkDerivation {
       sfml
       zlib
     ]
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       openal
       fontconfig
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Cocoa
       darwin.apple_sdk.frameworks.Carbon
       darwin.apple_sdk.frameworks.IOKit
@@ -61,7 +61,7 @@ stdenv.mkDerivation {
     "PKG_CONFIG=${stdenv.cc.targetPrefix}pkg-config"
     "AR=${stdenv.cc.targetPrefix}ar"
     "BUILD_EXPAT=0"
-  ] ++ lib.optionals stdenv.isDarwin [ "USE_FONTCONFIG=0" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "USE_FONTCONFIG=0" ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/by-name/at/atuin/package.nix b/pkgs/by-name/at/atuin/package.nix
index 9234e8866752..e50cdde161ef 100644
--- a/pkgs/by-name/at/atuin/package.nix
+++ b/pkgs/by-name/at/atuin/package.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   # TODO: unify this to one hash because updater do not support this
   cargoHash =
-    if stdenv.isLinux
+    if stdenv.hostPlatform.isLinux
     then "sha256-K4Vw/d0ZOROWujWr76I3QvfKefLhXLeFufUrgStAyjQ="
     else "sha256-8NAfE7cGFT64ntNXK9RT0D/MbDJweN7vvsG/KlrY4K4=";
 
@@ -35,7 +35,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     darwin.apple_sdk_11_0.frameworks.AppKit
     darwin.apple_sdk_11_0.frameworks.Security
diff --git a/pkgs/by-name/au/autopsy/package.nix b/pkgs/by-name/au/autopsy/package.nix
index 72f5130a5109..a2693eb5b8bc 100644
--- a/pkgs/by-name/au/autopsy/package.nix
+++ b/pkgs/by-name/au/autopsy/package.nix
@@ -1,6 +1,6 @@
 { stdenv, lib, makeWrapper, fetchzip, testdisk, imagemagick, jdk, findutils, sleuthkit, ... }:
 let
-  jdkWithJfx = jdk.override (lib.optionalAttrs stdenv.isLinux {
+  jdkWithJfx = jdk.override (lib.optionalAttrs stdenv.hostPlatform.isLinux {
     enableJavaFX = true;
   });
 in
diff --git a/pkgs/by-name/av/avbroot/package.nix b/pkgs/by-name/av/avbroot/package.nix
index 8e992e5c3a36..cc7fe1494e65 100644
--- a/pkgs/by-name/av/avbroot/package.nix
+++ b/pkgs/by-name/av/avbroot/package.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
     protobuf
   ];
 
-  buildInputs = [ bzip2 ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = [ bzip2 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   meta = {
     description = "Sign (and root) Android A/B OTAs with custom keys while preserving Android Verified Boot";
diff --git a/pkgs/by-name/aw/aws-sso-cli/package.nix b/pkgs/by-name/aw/aws-sso-cli/package.nix
index 6e5b72b1f2d3..b77680f058f2 100644
--- a/pkgs/by-name/aw/aws-sso-cli/package.nix
+++ b/pkgs/by-name/aw/aws-sso-cli/package.nix
@@ -37,7 +37,7 @@ buildGoModule rec {
       "TestAWSConsoleUrl"
       "TestAWSFederatedUrl"
       "TestServerWithSSL" # https://github.com/synfinatic/aws-sso-cli/issues/1030 -- remove when version >= 2.x
-    ] ++ lib.optionals stdenv.isDarwin [ "TestDetectShellBash" ];
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "TestDetectShellBash" ];
   in
     [ "-skip=^${builtins.concatStringsSep "$|^" skippedTests}$" ];
 
diff --git a/pkgs/by-name/aw/aws-vault/package.nix b/pkgs/by-name/aw/aws-vault/package.nix
index e503848f10b2..a99ed43ea7c0 100644
--- a/pkgs/by-name/aw/aws-vault/package.nix
+++ b/pkgs/by-name/aw/aws-vault/package.nix
@@ -24,7 +24,7 @@ buildGoModule rec {
   postInstall = ''
     # make xdg-open overrideable at runtime
     # aws-vault uses https://github.com/skratchdot/open-golang/blob/master/open/open.go to open links
-    ${lib.optionalString (!stdenv.isDarwin) "wrapProgram $out/bin/aws-vault --suffix PATH : ${lib.makeBinPath [ xdg-utils ]}"}
+    ${lib.optionalString (!stdenv.hostPlatform.isDarwin) "wrapProgram $out/bin/aws-vault --suffix PATH : ${lib.makeBinPath [ xdg-utils ]}"}
     installShellCompletion --cmd aws-vault \
       --bash $src/contrib/completions/bash/aws-vault.bash \
       --fish $src/contrib/completions/fish/aws-vault.fish \
diff --git a/pkgs/by-name/az/azure-cli/package.nix b/pkgs/by-name/az/azure-cli/package.nix
index 2a73b3da9fac..d9bfd888dd7b 100644
--- a/pkgs/by-name/az/azure-cli/package.nix
+++ b/pkgs/by-name/az/azure-cli/package.nix
@@ -191,7 +191,7 @@ py.pkgs.toPythonApplication (
         chardet
         colorama
       ]
-      ++ lib.optional stdenv.isLinux distro
+      ++ lib.optional stdenv.hostPlatform.isLinux distro
       ++ [
         fabric
         javaproperties
diff --git a/pkgs/by-name/az/azure-cli/python-packages.nix b/pkgs/by-name/az/azure-cli/python-packages.nix
index 97e2d0b1922a..5bde74450419 100644
--- a/pkgs/by-name/az/azure-cli/python-packages.nix
+++ b/pkgs/by-name/az/azure-cli/python-packages.nix
@@ -69,7 +69,7 @@ let
 
         nativeCheckInputs = with self; [ pytest ];
 
-        doCheck = stdenv.isLinux;
+        doCheck = stdenv.hostPlatform.isLinux;
 
         # ignore tests that does network call, or assume powershell
         checkPhase = ''
diff --git a/pkgs/by-name/az/azurite/package.nix b/pkgs/by-name/az/azurite/package.nix
index 8f70c247fc1e..de63807785f2 100644
--- a/pkgs/by-name/az/azurite/package.nix
+++ b/pkgs/by-name/az/azurite/package.nix
@@ -22,9 +22,9 @@ buildNpmPackage rec {
   npmDepsHash = "sha256-+ptjsz2MDIB/aqu4UxkBLCcehtamFdmswNUsHs23LuE=";
 
   nativeBuildInputs = [ pkg-config python3 ];
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     libsecret
-  ] ++ lib.optionals stdenv.isDarwin (with darwin; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin; [
     Security
     apple_sdk.frameworks.AppKit
   ]);
diff --git a/pkgs/by-name/ba/barrage/package.nix b/pkgs/by-name/ba/barrage/package.nix
index 497468cb489a..ff879e56924a 100644
--- a/pkgs/by-name/ba/barrage/package.nix
+++ b/pkgs/by-name/ba/barrage/package.nix
@@ -28,6 +28,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "barrage";
     maintainers = with lib.maintainers; [ AndersonTorres ];
     inherit (SDL.meta) platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/ba/bat/package.nix b/pkgs/by-name/ba/bat/package.nix
index 9e4132bc0b46..716ad80de725 100644
--- a/pkgs/by-name/ba/bat/package.nix
+++ b/pkgs/by-name/ba/bat/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config installShellFiles makeWrapper ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
 
   postInstall = ''
     installManPage $releaseDir/build/bat-*/out/assets/manual/bat.1
diff --git a/pkgs/by-name/ba/batmon/package.nix b/pkgs/by-name/ba/batmon/package.nix
index 5e5cf3f6501f..0d51bc0ec83b 100644
--- a/pkgs/by-name/ba/batmon/package.nix
+++ b/pkgs/by-name/ba/batmon/package.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
     license = licenses.asl20;
     mainProgram = "batmon";
     platforms = with platforms; unix ++ windows;
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
     maintainers = with maintainers; [ _6543 ];
   };
 }
diff --git a/pkgs/by-name/bc/bcc/package.nix b/pkgs/by-name/bc/bcc/package.nix
index 3d2235a0a0b3..6cc3c1ce3360 100644
--- a/pkgs/by-name/bc/bcc/package.nix
+++ b/pkgs/by-name/bc/bcc/package.nix
@@ -22,7 +22,7 @@ python3Packages.buildPythonApplication rec {
   pname = "bcc";
   version = "0.31.0";
 
-  disabled = !stdenv.isLinux;
+  disabled = !stdenv.hostPlatform.isLinux;
 
   src = fetchFromGitHub {
     owner = "iovisor";
diff --git a/pkgs/by-name/bd/bdf2ttf/package.nix b/pkgs/by-name/bd/bdf2ttf/package.nix
index c12100bb3662..399c07ee0b65 100644
--- a/pkgs/by-name/bd/bdf2ttf/package.nix
+++ b/pkgs/by-name/bd/bdf2ttf/package.nix
@@ -27,6 +27,6 @@ stdenv.mkDerivation {
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ ners ];
     platforms = lib.platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/bi/bicep/package.nix b/pkgs/by-name/bi/bicep/package.nix
index d8246c545890..9cd6e1a07f15 100644
--- a/pkgs/by-name/bi/bicep/package.nix
+++ b/pkgs/by-name/bi/bicep/package.nix
@@ -30,7 +30,7 @@ buildDotnetModule rec {
 
   dotnet-runtime = dotnetCorePackages.runtime_8_0;
 
-  doCheck = !(stdenv.isDarwin && stdenv.isAarch64); # mono is not available on aarch64-darwin
+  doCheck = !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64); # mono is not available on aarch64-darwin
 
   nativeCheckInputs = [ mono ];
 
diff --git a/pkgs/by-name/bi/binsider/package.nix b/pkgs/by-name/bi/binsider/package.nix
index 3b85edb9b6e7..b5a1b5503666 100644
--- a/pkgs/by-name/bi/binsider/package.nix
+++ b/pkgs/by-name/bi/binsider/package.nix
@@ -31,6 +31,6 @@ rustPlatform.buildRustPackage rec {
     ];
     maintainers = with maintainers; [ samueltardieu ];
     mainProgram = "binsider";
-    broken = stdenv.isDarwin || stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/by-name/bi/biome/package.nix b/pkgs/by-name/bi/biome/package.nix
index c37b4f6f66e5..678a1aa71fdb 100644
--- a/pkgs/by-name/bi/biome/package.nix
+++ b/pkgs/by-name/bi/biome/package.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
       rust-jemalloc-sys
       zlib
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
     ];
 
diff --git a/pkgs/by-name/bi/bite/package.nix b/pkgs/by-name/bi/bite/package.nix
index de072e33d470..4dd9e4384142 100644
--- a/pkgs/by-name/bi/bite/package.nix
+++ b/pkgs/by-name/bi/bite/package.nix
@@ -60,14 +60,14 @@ rustPlatform.buildRustPackage rec {
       pango
       vulkan-loader
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.AppKit
       darwin.apple_sdk.frameworks.CoreGraphics
       darwin.apple_sdk.frameworks.Foundation
       darwin.apple_sdk.frameworks.Metal
       darwin.apple_sdk.frameworks.QuartzCore
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       wayland
     ];
 
@@ -76,7 +76,7 @@ rustPlatform.buildRustPackage rec {
       libxkbcommon
       vulkan-loader
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       wayland
     ];
 
@@ -105,6 +105,6 @@ rustPlatform.buildRustPackage rec {
     license = licenses.mit;
     maintainers = with maintainers; [vinnymeller];
     mainProgram = "bite";
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 }
diff --git a/pkgs/by-name/bi/bitwarden-cli/package.nix b/pkgs/by-name/bi/bitwarden-cli/package.nix
index d6fa628ae91e..2fe5a8e36878 100644
--- a/pkgs/by-name/bi/bitwarden-cli/package.nix
+++ b/pkgs/by-name/bi/bitwarden-cli/package.nix
@@ -32,7 +32,7 @@ buildNpmPackage rec {
 
   nativeBuildInputs = [
     (python3.withPackages (ps: with ps; [ setuptools ]))
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
     xcbuild.xcrun
   ];
diff --git a/pkgs/by-name/bl/blastem/package.nix b/pkgs/by-name/bl/blastem/package.nix
index d1ba8d3cb826..2bdd9ed5f477 100644
--- a/pkgs/by-name/bl/blastem/package.nix
+++ b/pkgs/by-name/bl/blastem/package.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   # will probably be fixed in https://github.com/NixOS/nixpkgs/pull/302481
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile \
         --replace-fail "-flto" ""
   '';
diff --git a/pkgs/by-name/bl/bleep/package.nix b/pkgs/by-name/bl/bleep/package.nix
index 190f971ffb82..19a007dd70aa 100644
--- a/pkgs/by-name/bl/bleep/package.nix
+++ b/pkgs/by-name/bl/bleep/package.nix
@@ -36,7 +36,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
   nativeBuildInputs = [
     installShellFiles
     makeWrapper
-  ] ++ lib.optional stdenvNoCC.isLinux autoPatchelfHook;
+  ] ++ lib.optional stdenvNoCC.hostPlatform.isLinux autoPatchelfHook;
 
   buildInputs = [ zlib ];
 
@@ -49,7 +49,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
   dontAutoPatchelf = true;
 
   postFixup =
-    lib.optionalString stdenvNoCC.isLinux ''
+    lib.optionalString stdenvNoCC.hostPlatform.isLinux ''
       autoPatchelf $out
     ''
     + ''
diff --git a/pkgs/by-name/bl/blockattack/package.nix b/pkgs/by-name/bl/blockattack/package.nix
index 35b765920a0a..0e8a3cbc4d51 100644
--- a/pkgs/by-name/bl/blockattack/package.nix
+++ b/pkgs/by-name/bl/blockattack/package.nix
@@ -66,7 +66,7 @@ stdenv.mkDerivation (finalAttrs: {
   meta = {
     homepage = "https://blockattack.net/";
     description = "Open source clone of Panel de Pon (aka Tetris Attack)";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     changelog = "https://github.com/blockattack/blockattack-game/blob/${finalAttrs.src.rev}/CHANGELOG.md";
     license = with lib.licenses; [ gpl2Plus ];
     mainProgram = "blockattack";
diff --git a/pkgs/by-name/bl/blockbench/package.nix b/pkgs/by-name/bl/blockbench/package.nix
index a8458255c714..42d619d4302a 100644
--- a/pkgs/by-name/bl/blockbench/package.nix
+++ b/pkgs/by-name/bl/blockbench/package.nix
@@ -23,7 +23,7 @@ buildNpmPackage rec {
 
   nativeBuildInputs =
     [ makeWrapper ]
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       imagemagick # for icon resizing
       copyDesktopItems
     ];
@@ -33,7 +33,7 @@ buildNpmPackage rec {
   env.ELECTRON_SKIP_BINARY_DOWNLOAD = 1;
 
   # disable code signing on Darwin
-  postConfigure = lib.optionalString stdenv.isDarwin ''
+  postConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export CSC_IDENTITY_AUTO_DISCOVERY=false
     sed -i "/afterSign/d" package.json
   '';
@@ -54,13 +54,13 @@ buildNpmPackage rec {
   installPhase = ''
     runHook preInstall
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/Applications
       cp -r dist/mac*/Blockbench.app $out/Applications
       makeWrapper $out/Applications/Blockbench.app/Contents/MacOS/Blockbench $out/bin/blockbench
     ''}
 
-    ${lib.optionalString (!stdenv.isDarwin) ''
+    ${lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       mkdir -p $out/share/blockbench
       cp -r dist/*-unpacked/{locales,resources{,.pak}} $out/share/blockbench
 
diff --git a/pkgs/by-name/bo/bochs/package.nix b/pkgs/by-name/bo/bochs/package.nix
index 963f242d1ed7..ab06e54c484e 100644
--- a/pkgs/by-name/bo/bochs/package.nix
+++ b/pkgs/by-name/bo/bochs/package.nix
@@ -19,8 +19,8 @@
 , wxGTK32
 , enableSDL2 ? true
 , enableTerm ? true
-, enableWx ? !stdenv.isDarwin
-, enableX11 ? !stdenv.isDarwin
+, enableWx ? !stdenv.hostPlatform.isDarwin
+, enableX11 ? !stdenv.hostPlatform.isDarwin
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -55,7 +55,7 @@ stdenv.mkDerivation (finalAttrs: {
     libGLU
     libX11
     libXpm
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.libobjc
   ];
 
@@ -123,7 +123,7 @@ stdenv.mkDerivation (finalAttrs: {
   ] ++ lib.optionals enableX11 [
     "--with-x"
     "--with-x11"
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     "--enable-e1000"
     "--enable-es1370"
     "--enable-ne2000"
diff --git a/pkgs/by-name/bo/boehmgc/package.nix b/pkgs/by-name/bo/boehmgc/package.nix
index 4a5418a3206b..1c46aea7f9ca 100644
--- a/pkgs/by-name/bo/boehmgc/package.nix
+++ b/pkgs/by-name/bo/boehmgc/package.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   outputs = [ "out" "dev" "doc" ];
-  separateDebugInfo = stdenv.isLinux && stdenv.hostPlatform.libc != "musl";
+  separateDebugInfo = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.libc != "musl";
 
   nativeBuildInputs = [
     autoreconfHook
@@ -52,7 +52,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # `gctest` fails under x86_64 emulation on aarch64-darwin
   # and also on aarch64-linux (qemu-user)
-  doCheck = !((stdenv.isDarwin && stdenv.isx86_64) || (stdenv.isLinux && stdenv.isAarch64));
+  doCheck = !((stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) || (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64));
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/by-name/bo/boinctui/package.nix b/pkgs/by-name/bo/boinctui/package.nix
index faf8ca709dd4..eca32ef37731 100644
--- a/pkgs/by-name/bo/boinctui/package.nix
+++ b/pkgs/by-name/bo/boinctui/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation {
   '';
 
   outputs = [ "out" "man" ];
-  separateDebugInfo = stdenv.isLinux;
+  separateDebugInfo = stdenv.hostPlatform.isLinux;
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/by-name/br/bruno/package.nix b/pkgs/by-name/br/bruno/package.nix
index 7576636a5bf6..6b271c571e07 100644
--- a/pkgs/by-name/br/bruno/package.nix
+++ b/pkgs/by-name/br/bruno/package.nix
@@ -21,7 +21,7 @@
 let
   # fix for: https://github.com/NixOS/nixpkgs/issues/272156
   buildNpmPackage' = buildNpmPackage.override {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 in
 buildNpmPackage' rec {
@@ -47,7 +47,7 @@ buildNpmPackage' rec {
       (writeShellScriptBin "phantomjs" "echo 2.1.1")
       pkg-config
     ]
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       makeWrapper
       copyDesktopItems
     ];
@@ -58,7 +58,7 @@ buildNpmPackage' rec {
       cairo
       pango
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk_11_0.frameworks.CoreText
     ];
 
@@ -100,7 +100,7 @@ buildNpmPackage' rec {
     pushd packages/bruno-electron
 
     ${
-      if stdenv.isDarwin then
+      if stdenv.hostPlatform.isDarwin then
         ''
           cp -r ${electron.dist}/Electron.app ./
           find ./Electron.app -name 'Info.plist' | xargs -d '\n' chmod +rw
@@ -136,7 +136,7 @@ buildNpmPackage' rec {
 
 
     ${
-      if stdenv.isDarwin then
+      if stdenv.hostPlatform.isDarwin then
         ''
           mkdir -p $out/Applications
 
diff --git a/pkgs/by-name/bs/bsc/package.nix b/pkgs/by-name/bs/bsc/package.nix
index bb0e762e46f4..03bbb66e5550 100644
--- a/pkgs/by-name/bs/bsc/package.nix
+++ b/pkgs/by-name/bs/bsc/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   enableParallelBuilding = true;
 
-  buildInputs = lib.optional stdenv.isDarwin llvmPackages.openmp;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp;
 
   makeFlags = [
     "CC=$(CXX)"
diff --git a/pkgs/by-name/bu/buckle/package.nix b/pkgs/by-name/bu/buckle/package.nix
index c4139ebe5805..51c5e1486d54 100644
--- a/pkgs/by-name/bu/buckle/package.nix
+++ b/pkgs/by-name/bu/buckle/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-eWhcDzw+6I5N0dse5avwhcQ/y6YZ6b3QKyBwWBrA/xo=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/bu/bulk_extractor/package.nix b/pkgs/by-name/bu/bulk_extractor/package.nix
index 58bbb1edd6d1..25d38c6c35ca 100644
--- a/pkgs/by-name/bu/bulk_extractor/package.nix
+++ b/pkgs/by-name/bu/bulk_extractor/package.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation (finalAttrs: {
     aclocal -I m4
   '';
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/be20_api/feature_recorder_set.cpp --replace-fail '#warn ' '#warning '
   '';
 
diff --git a/pkgs/by-name/bu/bulloak/package.nix b/pkgs/by-name/bu/bulloak/package.nix
index dc8584fb6707..6b395068e914 100644
--- a/pkgs/by-name/bu/bulloak/package.nix
+++ b/pkgs/by-name/bu/bulloak/package.nix
@@ -42,7 +42,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-lj/wmLu4cBjDjzMD8DlIz+6Rnag0h+zWiE7lfcTC7lY=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   # tests run in CI on the source repo
   doCheck = false;
diff --git a/pkgs/by-name/bu/bunbun/package.nix b/pkgs/by-name/bu/bunbun/package.nix
index ab9068277871..2d042f08d8f9 100644
--- a/pkgs/by-name/bu/bunbun/package.nix
+++ b/pkgs/by-name/bu/bunbun/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-CcGfaSyCMv0Wm4QsYASBwEnpX8fKbLHRqyEcUmj2w2o=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks;
     [
       CoreFoundation
diff --git a/pkgs/by-name/bu/bup/package.nix b/pkgs/by-name/bu/bup/package.nix
index 91fb2b3c3f71..c9fe3986611c 100644
--- a/pkgs/by-name/bu/bup/package.nix
+++ b/pkgs/by-name/bu/bup/package.nix
@@ -23,7 +23,7 @@ let
       setuptools
       tornado
     ]
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       pyxattr
       pylibacl
       fuse
diff --git a/pkgs/by-name/bu/bustle/package.nix b/pkgs/by-name/bu/bustle/package.nix
index a6e3e6474729..876d63ff014f 100644
--- a/pkgs/by-name/bu/bustle/package.nix
+++ b/pkgs/by-name/bu/bustle/package.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-r29Z+6P+yuCpOBUE3vkESd15lcGXs5+ZTBiQ9nW6DJ4=";
   };
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     # Set the location to gettext to ensure the nixpkgs one on Darwin instead of the vendored one.
     # The vendored gettext does not build with clang 16.
     GETTEXT_BIN_DIR = "${lib.getBin buildPackages.gettext}/bin";
@@ -60,7 +60,7 @@ stdenv.mkDerivation (finalAttrs: {
     glib
     gtk4
     libadwaita
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
     libiconv
   ];
diff --git a/pkgs/by-name/c2/c2patool/package.nix b/pkgs/by-name/c2/c2patool/package.nix
index c6a3645f8b26..29cb68b1f4e0 100644
--- a/pkgs/by-name/c2/c2patool/package.nix
+++ b/pkgs/by-name/c2/c2patool/package.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
   ];
   buildInputs = [
     openssl
-  ] ++ lib.optional stdenv.isDarwin [
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin [
     libiconv
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.Carbon
diff --git a/pkgs/by-name/ca/cadzinho/package.nix b/pkgs/by-name/ca/cadzinho/package.nix
index 6b24ef5a18f7..5a12cd1e54bc 100644
--- a/pkgs/by-name/ca/cadzinho/package.nix
+++ b/pkgs/by-name/ca/cadzinho/package.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
     substituteInPlace Makefile --replace-fail "-lGLEW" "-lGLEW -lSDL2_net"
   '';
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin desktopToDarwinBundle;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   buildInputs = [ SDL2 SDL2_net glew lua5_4 ];
 
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   env.NIX_CFLAGS_COMPILE = toString ([
     "-I${SDL2.dev}/include/SDL2"
     "-I${SDL2_net.dev}/include/SDL2"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # https://github.com/llvm/llvm-project/issues/62254
     "-fno-builtin-strrchr"
   ]);
diff --git a/pkgs/by-name/ca/caligula/package.nix b/pkgs/by-name/ca/caligula/package.nix
index 6cb36421eaae..d957b2c79a92 100644
--- a/pkgs/by-name/ca/caligula/package.nix
+++ b/pkgs/by-name/ca/caligula/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
    };
 
 
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks; [
       Cocoa
       IOKit
diff --git a/pkgs/by-name/ca/caprine/package.nix b/pkgs/by-name/ca/caprine/package.nix
index e6e2106b3809..f164af42b5a8 100644
--- a/pkgs/by-name/ca/caprine/package.nix
+++ b/pkgs/by-name/ca/caprine/package.nix
@@ -40,7 +40,7 @@ buildNpmPackage rec {
   installPhase = ''
     runHook preInstall
 
-    ${lib.optionalString stdenv.isLinux ''
+    ${lib.optionalString stdenv.hostPlatform.isLinux ''
       mkdir -p $out/share/caprine
       cp -r dist/*-unpacked/{locales,resources{,.pak}} $out/share/caprine
 
@@ -53,7 +53,7 @@ buildNpmPackage rec {
       install -Dm644 build/icon.png $out/share/icons/hicolor/512x512/apps/caprine.png
     ''}
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/Applications
       cp -r dist/mac*/"Caprine.app" $out/Applications
       makeWrapper "$out/Applications/Caprine.app/Contents/MacOS/Caprine" $out/bin/caprine
diff --git a/pkgs/by-name/ca/cargo-bump/package.nix b/pkgs/by-name/ca/cargo-bump/package.nix
index 0de63ed2036b..e40d79a14089 100644
--- a/pkgs/by-name/ca/cargo-bump/package.nix
+++ b/pkgs/by-name/ca/cargo-bump/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/ca/cargo-geiger/package.nix b/pkgs/by-name/ca/cargo-geiger/package.nix
index acfc59829eea..c29825cb86b5 100644
--- a/pkgs/by-name/ca/cargo-geiger/package.nix
+++ b/pkgs/by-name/ca/cargo-geiger/package.nix
@@ -33,10 +33,10 @@ rustPlatform.buildRustPackage rec {
   ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ CoreFoundation Security libiconv curl ]);
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ CoreFoundation Security libiconv curl ]);
   nativeBuildInputs = [ pkg-config ]
     # curl-sys wants to run curl-config on darwin
-    ++ lib.optionals stdenv.isDarwin [ curl.dev ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ curl.dev ];
 
   # skip tests with networking or other failures
   checkFlags = [
diff --git a/pkgs/by-name/ca/cargo-i18n/package.nix b/pkgs/by-name/ca/cargo-i18n/package.nix
index 43b353ed4d49..0665e8860b84 100644
--- a/pkgs/by-name/ca/cargo-i18n/package.nix
+++ b/pkgs/by-name/ca/cargo-i18n/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-vN62QmCuhu7AjL6xSpBU6/ul4WgNLZbjWDCFyHj6rIM=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/by-name/ca/cargo-information/package.nix b/pkgs/by-name/ca/cargo-information/package.nix
index dcb87ba96748..fe7f950fce85 100644
--- a/pkgs/by-name/ca/cargo-information/package.nix
+++ b/pkgs/by-name/ca/cargo-information/package.nix
@@ -45,7 +45,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
     curl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/ca/cargo-make/package.nix b/pkgs/by-name/ca/cargo-make/package.nix
index 4a90d4af78b5..b55621333838 100644
--- a/pkgs/by-name/ca/cargo-make/package.nix
+++ b/pkgs/by-name/ca/cargo-make/package.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     bzip2
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/by-name/ca/cargo-raze/package.nix b/pkgs/by-name/ca/cargo-raze/package.nix
index a0b4fd0ace7b..ca381ef562dd 100644
--- a/pkgs/by-name/ca/cargo-raze/package.nix
+++ b/pkgs/by-name/ca/cargo-raze/package.nix
@@ -36,9 +36,9 @@ rustPlatform.buildRustPackage {
     libgit2
     openssl
     curl
-  ] ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
 
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Darwin issue: Os { code: 24, kind: Uncategorized, message: "Too many open files" }
     # https://github.com/google/cargo-raze/issues/544
     ulimit -n 1024
diff --git a/pkgs/by-name/ca/cargo-rdme/package.nix b/pkgs/by-name/ca/cargo-rdme/package.nix
index 131a6eb70f45..105104e9b46d 100644
--- a/pkgs/by-name/ca/cargo-rdme/package.nix
+++ b/pkgs/by-name/ca/cargo-rdme/package.nix
@@ -9,7 +9,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-AARkXr6qOq9u/nmcmCnA4P+Q+MPPChCXoRaYiLwCNPs=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/by-name/ca/cargo-unfmt/package.nix b/pkgs/by-name/ca/cargo-unfmt/package.nix
index 3a2a16dfaaf6..e53cc07c330c 100644
--- a/pkgs/by-name/ca/cargo-unfmt/package.nix
+++ b/pkgs/by-name/ca/cargo-unfmt/package.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage {
 
   cargoHash = "sha256-mMeHTYCUIZR3jVvTxfyH4I9wGfUdCWcyn9djnksAY8k=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
 
   # Doc tests are broken on 0.3.3
   doCheck = false;
diff --git a/pkgs/by-name/ca/cargo-vibe/package.nix b/pkgs/by-name/ca/cargo-vibe/package.nix
index 4caaa823264b..ba7a5882b5bb 100644
--- a/pkgs/by-name/ca/cargo-vibe/package.nix
+++ b/pkgs/by-name/ca/cargo-vibe/package.nix
@@ -28,8 +28,8 @@ rustPlatform.buildRustPackage rec {
     dbus
     openssl
   ]
-  ++ lib.optional stdenv.isLinux udev
-  ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ AppKit IOKit CoreBluetooth ]);
+  ++ lib.optional stdenv.hostPlatform.isLinux udev
+  ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ AppKit IOKit CoreBluetooth ]);
 
   meta = with lib; {
     description = "Cargo x Buttplug.io";
diff --git a/pkgs/by-name/ca/cargo-wasi/package.nix b/pkgs/by-name/ca/cargo-wasi/package.nix
index b0fe56c9fb69..a42b98da2054 100644
--- a/pkgs/by-name/ca/cargo-wasi/package.nix
+++ b/pkgs/by-name/ca/cargo-wasi/package.nix
@@ -21,8 +21,8 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Security ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Security ]);
 
   # Checks need to be disabled here because the current test suite makes assumptions
   # about the surrounding environment that aren't Nix friendly. See these lines for specifics:
diff --git a/pkgs/by-name/ca/cargo-xwin/package.nix b/pkgs/by-name/ca/cargo-xwin/package.nix
index 78c6c9933e83..4f3b16c4ddee 100644
--- a/pkgs/by-name/ca/cargo-xwin/package.nix
+++ b/pkgs/by-name/ca/cargo-xwin/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-xVG1nET020rfMIjhIcCtNr9ZCj8SgQAvXePjyKSPjUs=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/ca/casadi/package.nix b/pkgs/by-name/ca/casadi/package.nix
index dda1eed048d0..0f1f3e3d7a00 100644
--- a/pkgs/by-name/ca/casadi/package.nix
+++ b/pkgs/by-name/ca/casadi/package.nix
@@ -97,7 +97,7 @@ stdenv.mkDerivation (finalAttrs: {
         "if (SWIG_IMPORT)" \
         "if (NOT SWIG_IMPORT)"
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # this is only printing stuff, and is not defined on all CPU
       substituteInPlace casadi/interfaces/hpipm/hpipm_runtime.hpp --replace-fail \
         "d_print_exp_tran_mat" \
@@ -150,7 +150,7 @@ stdenv.mkDerivation (finalAttrs: {
       python3Packages.numpy
       python3Packages.python
     ]
-    ++ lib.optionals stdenv.isDarwin [ llvmPackages_17.openmp ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ llvmPackages_17.openmp ];
 
   cmakeFlags = [
     (lib.cmakeBool "WITH_PYTHON" pythonSupport)
diff --git a/pkgs/by-name/ca/castxml/package.nix b/pkgs/by-name/ca/castxml/package.nix
index 88cbbec87c6d..c0fe17a1d097 100644
--- a/pkgs/by-name/ca/castxml/package.nix
+++ b/pkgs/by-name/ca/castxml/package.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
     libxml2
     llvm
     zlib
-  ] ++ lib.optionals (!stdenv.isDarwin) [ libclang ];
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ libclang ];
 
   cmakeFlags =
     [
@@ -47,7 +47,7 @@ stdenv.mkDerivation (finalAttrs: {
       (lib.cmakeBool "SPHINX_HTML" withHTML)
       (lib.cmakeBool "SPHINX_MAN" withManual)
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       (lib.cmakeOptionType "path" "Clang_DIR" "${lib.getDev libclang}/lib/cmake/clang")
     ];
 
diff --git a/pkgs/by-name/cb/cbftp/package.nix b/pkgs/by-name/cb/cbftp/package.nix
index 5709acb02ddb..73e11f27b277 100644
--- a/pkgs/by-name/cb/cbftp/package.nix
+++ b/pkgs/by-name/cb/cbftp/package.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   dontConfigure = true;
 
-  makeFlags = lib.optional stdenv.isDarwin "OPTFLAGS=-O0";
+  makeFlags = lib.optional stdenv.hostPlatform.isDarwin "OPTFLAGS=-O0";
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/by-name/cc/ccache/package.nix b/pkgs/by-name/cc/ccache/package.nix
index 9984771b7ce9..c30543cdbdd1 100644
--- a/pkgs/by-name/cc/ccache/package.nix
+++ b/pkgs/by-name/cc/ccache/package.nix
@@ -83,7 +83,7 @@ stdenv.mkDerivation (finalAttrs: {
     # test/run requires the compgen function which is available in
     # bashInteractive, but not bash.
     bashInteractive
-  ] ++ lib.optional stdenv.isDarwin xcodebuild;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin xcodebuild;
 
   checkInputs = [
     doctest
@@ -95,7 +95,7 @@ stdenv.mkDerivation (finalAttrs: {
         [
           "test.trim_dir" # flaky on hydra (possibly filesystem-specific?)
         ]
-        ++ lib.optionals stdenv.isDarwin [
+        ++ lib.optionals stdenv.hostPlatform.isDarwin [
           "test.basedir"
           "test.fileclone" # flaky on hydra (possibly filesystem-specific?)
           "test.multi_arch"
diff --git a/pkgs/by-name/cc/cctools/package.nix b/pkgs/by-name/cc/cctools/package.nix
index 2ab074def674..c56f79b69e47 100644
--- a/pkgs/by-name/cc/cctools/package.nix
+++ b/pkgs/by-name/cc/cctools/package.nix
@@ -132,8 +132,8 @@ stdenv.mkDerivation (finalAttrs: {
       ld64
       llvm
     ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.objc4 ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [ memstreamHook ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.objc4 ]
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [ memstreamHook ];
 
   mesonBuildType = "release";
 
diff --git a/pkgs/by-name/ce/centerpiece/package.nix b/pkgs/by-name/ce/centerpiece/package.nix
index 784945da7c77..7d7c7512d876 100644
--- a/pkgs/by-name/ce/centerpiece/package.nix
+++ b/pkgs/by-name/ce/centerpiece/package.nix
@@ -38,7 +38,7 @@ rustPlatform.buildRustPackage rec {
     libXrandr
   ]);
 
-  postFixup = lib.optional stdenv.isLinux ''
+  postFixup = lib.optional stdenv.hostPlatform.isLinux ''
     rpath=$(patchelf --print-rpath $out/bin/centerpiece)
     patchelf --set-rpath "$rpath:${
       lib.makeLibraryPath [
diff --git a/pkgs/by-name/ch/chatd/package.nix b/pkgs/by-name/ch/chatd/package.nix
index 692e7d752971..1653b80e26f7 100644
--- a/pkgs/by-name/ch/chatd/package.nix
+++ b/pkgs/by-name/ch/chatd/package.nix
@@ -67,15 +67,15 @@ buildNpmPackage rec {
     find $out/share/chatd/node_modules -name '*.exe' -or -name '*.dll' -or -name '*.pdb' -delete
     rm -rf ${
       lib.concatStringsSep " " (
-        (lib.optional (!stdenv.isx86_64) "$out/share/chatd/node_modules/onnxruntime-node/bin/napi-v3/*/x64")
+        (lib.optional (!stdenv.hostPlatform.isx86_64) "$out/share/chatd/node_modules/onnxruntime-node/bin/napi-v3/*/x64")
         ++ (lib.optional (
-          !stdenv.isAarch64
+          !stdenv.hostPlatform.isAarch64
         ) "$out/share/chatd/node_modules/onnxruntime-node/bin/napi-v3/*/arm64")
         ++ (lib.optional (
-          !stdenv.isDarwin
+          !stdenv.hostPlatform.isDarwin
         ) "$out/share/chatd/node_modules/onnxruntime-node/bin/napi-v3/darwin")
         ++ (lib.optional (
-          !stdenv.isLinux
+          !stdenv.hostPlatform.isLinux
         ) "$out/share/chatd/node_modules/onnxruntime-node/bin/napi-v3/linux")
       )
     }
diff --git a/pkgs/by-name/ch/chawan/package.nix b/pkgs/by-name/ch/chawan/package.nix
index 7a847adb1b44..d6ffc1d3dcd2 100644
--- a/pkgs/by-name/ch/chawan/package.nix
+++ b/pkgs/by-name/ch/chawan/package.nix
@@ -79,6 +79,6 @@ stdenv.mkDerivation {
     platforms = lib.platforms.unix;
     maintainers = with lib.maintainers; [ jtbx ];
     mainProgram = "cha";
-    broken = stdenv.isDarwin; # pending PR #292043
+    broken = stdenv.hostPlatform.isDarwin; # pending PR #292043
   };
 }
diff --git a/pkgs/by-name/ch/chow-tape-model/package.nix b/pkgs/by-name/ch/chow-tape-model/package.nix
index a233e2352d7f..e080ee6c05b8 100644
--- a/pkgs/by-name/ch/chow-tape-model/package.nix
+++ b/pkgs/by-name/ch/chow-tape-model/package.nix
@@ -126,7 +126,7 @@ stdenv.mkDerivation (finalAttrs: {
     platforms = platforms.linux;
     # error: 'vvtanh' was not declared in this scope; did you mean 'tanh'?
     # error: no matching function for call to 'juce::dsp::SIMDRegister<double>::SIMDRegister(xsimd::simd_batch_traits<xsimd::batch<double, 2> >::batch_bool_type)'
-    broken = stdenv.isAarch64; # since 2021-12-27 on hydra (update to 2.10): https://hydra.nixos.org/build/162558991
+    broken = stdenv.hostPlatform.isAarch64; # since 2021-12-27 on hydra (update to 2.10): https://hydra.nixos.org/build/162558991
     mainProgram = "CHOWTapeModel";
   };
 })
diff --git a/pkgs/by-name/ci/cinny-unwrapped/package.nix b/pkgs/by-name/ci/cinny-unwrapped/package.nix
index fabda88152a4..643b7017deb6 100644
--- a/pkgs/by-name/ci/cinny-unwrapped/package.nix
+++ b/pkgs/by-name/ci/cinny-unwrapped/package.nix
@@ -27,7 +27,7 @@ buildNpmPackage rec {
 
   # Fix error: no member named 'aligned_alloc' in the global namespace
   env.NIX_CFLAGS_COMPILE = lib.optionalString (
-    stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "11.0"
+    stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "11.0"
   ) "-D_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION=1";
 
   nativeBuildInputs = [
@@ -39,7 +39,7 @@ buildNpmPackage rec {
     pixman
     cairo
     pango
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.CoreText ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreText ];
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/by-name/cl/clickable/package.nix b/pkgs/by-name/cl/clickable/package.nix
index 53ef6c2dd4b0..0437aae99580 100644
--- a/pkgs/by-name/cl/clickable/package.nix
+++ b/pkgs/by-name/cl/clickable/package.nix
@@ -67,7 +67,7 @@ python3Packages.buildPythonApplication rec {
     ++
     # There are no docker images available for the aarch64 architecutre
     # which are required for tests.
-    lib.optionals stdenv.isAarch64 [
+    lib.optionals stdenv.hostPlatform.isAarch64 [
       "test_arch"
       "test_restricted_arch"
     ];
diff --git a/pkgs/by-name/cl/clipcat/package.nix b/pkgs/by-name/cl/clipcat/package.nix
index 6c5bd77c89db..b5d22c8b5081 100644
--- a/pkgs/by-name/cl/clipcat/package.nix
+++ b/pkgs/by-name/cl/clipcat/package.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-z2t7kq2ogMHJGF7xQnzc11B42gUZFTVokVkbw35CeY0=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/cl/cloudlogoffline/package.nix b/pkgs/by-name/cl/cloudlogoffline/package.nix
index 04e6f0ed2c32..027e91d5eb3a 100644
--- a/pkgs/by-name/cl/cloudlogoffline/package.nix
+++ b/pkgs/by-name/cl/cloudlogoffline/package.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation (self: {
     qt6.qmake
     qt6.wrapQtAppsHook
   ]
-  ++ lib.optionals (!stdenv.isDarwin) [
+  ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     copyDesktopItems
   ];
 
@@ -33,16 +33,16 @@ stdenv.mkDerivation (self: {
   ];
 
   postPatch = let
-    targetDir = if stdenv.isDarwin then "Applications" else "bin";
+    targetDir = if stdenv.hostPlatform.isDarwin then "Applications" else "bin";
   in ''
     substituteInPlace CloudLogOffline.pro \
       --replace 'target.path = /opt/$''${TARGET}/bin' "target.path = $out/${targetDir}"
   '';
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     install -d $out/share/pixmaps
     install -m644 images/logo_circle.svg $out/share/pixmaps/cloudlogoffline.svg
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # FIXME: For some reason, the Info.plist isn't copied correctly to
     # the application bundle when building normally, instead creating an
     # empty file. This doesn't happen when building in a dev shell with
@@ -53,7 +53,7 @@ stdenv.mkDerivation (self: {
     install -m644 macos/Info.plist $out/Applications/CloudLogOffline.app/Contents/Info.plist
   '';
 
-  desktopItems = lib.optionals (!stdenv.isDarwin) [
+  desktopItems = lib.optionals (!stdenv.hostPlatform.isDarwin) [
     (makeDesktopItem {
       name = "cloudlogoffline";
       desktopName = "CloudLogOffline";
diff --git a/pkgs/by-name/cm/cmake/package.nix b/pkgs/by-name/cm/cmake/package.nix
index ca0f1789a110..82563e56c2b0 100644
--- a/pkgs/by-name/cm/cmake/package.nix
+++ b/pkgs/by-name/cm/cmake/package.nix
@@ -25,7 +25,7 @@
     isBootstrap
   else false)
 , useOpenSSL ? !isMinimalBuild
-, useSharedLibraries ? (!isMinimalBuild && !stdenv.isCygwin)
+, useSharedLibraries ? (!isMinimalBuild && !stdenv.hostPlatform.isCygwin)
 , uiToolkits ? [] # can contain "ncurses" and/or "qt5"
 , buildDocs ? !(isMinimalBuild || (uiToolkits == []))
 , darwin
@@ -66,13 +66,13 @@ stdenv.mkDerivation (finalAttrs: {
     # Derived from https://github.com/libuv/libuv/commit/1a5d4f08238dd532c3718e210078de1186a5920d
     ./003-libuv-application-services.diff
   ]
-  ++ lib.optional stdenv.isCygwin ./004-cygwin.diff
+  ++ lib.optional stdenv.hostPlatform.isCygwin ./004-cygwin.diff
   # Derived from https://github.com/curl/curl/commit/31f631a142d855f069242f3e0c643beec25d1b51
-  ++ lib.optional (stdenv.isDarwin && isMinimalBuild) ./005-remove-systemconfiguration-dep.diff
+  ++ lib.optional (stdenv.hostPlatform.isDarwin && isMinimalBuild) ./005-remove-systemconfiguration-dep.diff
   # On Darwin, always set CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG.
-  ++ lib.optional stdenv.isDarwin ./006-darwin-always-set-runtime-c-flag.diff
+  ++ lib.optional stdenv.hostPlatform.isDarwin ./006-darwin-always-set-runtime-c-flag.diff
   # On platforms where ps is not part of stdenv, patch the invocation of ps to use an absolute path.
-  ++ lib.optional (stdenv.isDarwin || stdenv.isFreeBSD) (
+  ++ lib.optional (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isFreeBSD) (
     substituteAll {
       src = ./007-darwin-bsd-ps-abspath.diff;
       ps = lib.getExe ps;
@@ -108,8 +108,8 @@ stdenv.mkDerivation (finalAttrs: {
   ++ lib.optional useOpenSSL openssl
   ++ lib.optional cursesUI ncurses
   ++ lib.optional qt5UI qtbase
-  ++ lib.optional stdenv.isDarwin CoreServices
-  ++ lib.optional (stdenv.isDarwin && !isMinimalBuild) SystemConfiguration;
+  ++ lib.optional stdenv.hostPlatform.isDarwin CoreServices
+  ++ lib.optional (stdenv.hostPlatform.isDarwin && !isMinimalBuild) SystemConfiguration;
 
   preConfigure = ''
     fixCmakeFiles .
@@ -207,6 +207,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with lib.maintainers; [ ttuegel lnl7 AndersonTorres ];
     platforms = lib.platforms.all;
     mainProgram = "cmake";
-    broken = (qt5UI && stdenv.isDarwin);
+    broken = (qt5UI && stdenv.hostPlatform.isDarwin);
   };
 })
diff --git a/pkgs/by-name/co/code2prompt/package.nix b/pkgs/by-name/co/code2prompt/package.nix
index f951b2b1e294..03c5e6e7b0a8 100644
--- a/pkgs/by-name/co/code2prompt/package.nix
+++ b/pkgs/by-name/co/code2prompt/package.nix
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.AppKit
     ];
diff --git a/pkgs/by-name/co/codeberg-cli/package.nix b/pkgs/by-name/co/codeberg-cli/package.nix
index 825731d4d1b4..2d89eaed9189 100644
--- a/pkgs/by-name/co/codeberg-cli/package.nix
+++ b/pkgs/by-name/co/codeberg-cli/package.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       let
         d = darwin.apple_sdk.frameworks;
       in
diff --git a/pkgs/by-name/co/codeium/package.nix b/pkgs/by-name/co/codeium/package.nix
index 679050b5cc8a..1807519b2202 100644
--- a/pkgs/by-name/co/codeium/package.nix
+++ b/pkgs/by-name/co/codeium/package.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
     inherit hash;
   };
 
-  nativeBuildInputs = [ gzip ] ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = [ gzip ] ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   dontUnpack = true;
   dontConfigure = true;
diff --git a/pkgs/by-name/co/comet-gog/package.nix b/pkgs/by-name/co/comet-gog/package.nix
index 35677d4bf08d..f60193005705 100644
--- a/pkgs/by-name/co/comet-gog/package.nix
+++ b/pkgs/by-name/co/comet-gog/package.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
 
   env.PROTOC = lib.getExe' protobuf "protoc";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
     SystemConfiguration
   ];
diff --git a/pkgs/by-name/co/committed/package.nix b/pkgs/by-name/co/committed/package.nix
index cd42172fde9f..229414b14f68 100644
--- a/pkgs/by-name/co/committed/package.nix
+++ b/pkgs/by-name/co/committed/package.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage {
   };
   cargoHash = "sha256-AmAEGVWq6KxLtiHDGIFVcoP1Wck8z+P9mnDy0SSSJNM=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   passthru = {
     tests.version = testers.testVersion { package = committed; };
diff --git a/pkgs/by-name/co/conduwuit/package.nix b/pkgs/by-name/co/conduwuit/package.nix
index 1fd8e9b3e3d5..733b502246a0 100644
--- a/pkgs/by-name/co/conduwuit/package.nix
+++ b/pkgs/by-name/co/conduwuit/package.nix
@@ -14,17 +14,17 @@
   # upstream conduwuit enables jemalloc by default, so we follow suit
   enableJemalloc ? true,
   rust-jemalloc-sys,
-  enableLiburing ? stdenv.isLinux,
+  enableLiburing ? stdenv.hostPlatform.isLinux,
   liburing,
 }:
 let
   rust-jemalloc-sys' = rust-jemalloc-sys.override {
-    unprefixed = !stdenv.isDarwin;
+    unprefixed = !stdenv.hostPlatform.isDarwin;
   };
   rocksdb' = rocksdb.override {
     inherit enableLiburing;
     # rocksdb does not support prefixed jemalloc, which is required on darwin
-    enableJemalloc = enableJemalloc && !stdenv.isDarwin;
+    enableJemalloc = enableJemalloc && !stdenv.hostPlatform.isDarwin;
     jemalloc = rust-jemalloc-sys';
   };
 in
@@ -62,7 +62,7 @@ rustPlatform.buildRustPackage rec {
     ]
     ++ lib.optional enableJemalloc rust-jemalloc-sys'
     ++ lib.optional enableLiburing liburing
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
     ];
 
diff --git a/pkgs/by-name/co/construct/package.nix b/pkgs/by-name/co/construct/package.nix
index eb2c922b31b4..89833c817608 100644
--- a/pkgs/by-name/co/construct/package.nix
+++ b/pkgs/by-name/co/construct/package.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-ENso0y7yEaXzGXzZOnlZ1L7+j/qayJL+f55/NYLz2ew=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile \
         --replace g++ c++
   '';
diff --git a/pkgs/by-name/co/convco/package.nix b/pkgs/by-name/co/convco/package.nix
index 60b17d84c648..0f08aba98ae8 100644
--- a/pkgs/by-name/co/convco/package.nix
+++ b/pkgs/by-name/co/convco/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ cmake pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
 
   meta = with lib; {
     description = "Conventional commit cli";
diff --git a/pkgs/by-name/co/convmv/package.nix b/pkgs/by-name/co/convmv/package.nix
index 65fbd85e37d6..e89b4250ead3 100644
--- a/pkgs/by-name/co/convmv/package.nix
+++ b/pkgs/by-name/co/convmv/package.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # testsuite.tar contains filenames that aren't valid UTF-8. Extraction of
   # testsuite.tar will fail as APFS enforces that filenames are valid UTF-8.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   prePatch =
     lib.optionalString finalAttrs.doCheck ''
diff --git a/pkgs/by-name/co/cook-cli/package.nix b/pkgs/by-name/co/cook-cli/package.nix
index fbebd0d7fb46..846d3fb52777 100644
--- a/pkgs/by-name/co/cook-cli/package.nix
+++ b/pkgs/by-name/co/cook-cli/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   postPatch = ''
     rm -rf "ui/public"
diff --git a/pkgs/by-name/co/costa/package.nix b/pkgs/by-name/co/costa/package.nix
index 3dacce655055..fcc644edadf4 100644
--- a/pkgs/by-name/co/costa/package.nix
+++ b/pkgs/by-name/co/costa/package.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  buildInputs = [ scalapack ] ++ lib.optional stdenv.isDarwin llvmPackages.openmp;
+  buildInputs = [ scalapack ] ++ lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp;
 
   propagatedBuildInputs = [ mpi ];
 
diff --git a/pkgs/by-name/co/coyim/package.nix b/pkgs/by-name/co/coyim/package.nix
index 458ee764f1df..b45522006890 100644
--- a/pkgs/by-name/co/coyim/package.nix
+++ b/pkgs/by-name/co/coyim/package.nix
@@ -34,6 +34,6 @@ buildGoModule {
     homepage = "https://coy.im/";
     license = lib.licenses.gpl3;
     platforms = [ "x86_64-linux" "x86_64-darwin" ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/cp/cppcheck/package.nix b/pkgs/by-name/cp/cppcheck/package.nix
index a7fbe2a50ec4..d7ed4fb99c47 100644
--- a/pkgs/by-name/cp/cppcheck/package.nix
+++ b/pkgs/by-name/cp/cppcheck/package.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation (finalAttrs: {
   strictDeps = true;
 
   # test/testcondition.cpp:4949(TestCondition::alwaysTrueContainer): Assertion failed.
-  doCheck = !(stdenv.isLinux && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   doInstallCheck = true;
 
   postPatch = ''
diff --git a/pkgs/by-name/cp/cpuinfo/package.nix b/pkgs/by-name/cp/cpuinfo/package.nix
index 5ee3e361ef69..c57f6708b389 100644
--- a/pkgs/by-name/cp/cpuinfo/package.nix
+++ b/pkgs/by-name/cp/cpuinfo/package.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.cmakeBool "USE_SYSTEM_LIBS" true)
   ];
 
-  doCheck = !(stdenv.isLinux && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
 
   meta = {
     description = "Tools and library to detect essential for performance optimization information about host CPU";
diff --git a/pkgs/by-name/cr/crabfit-api/package.nix b/pkgs/by-name/cr/crabfit-api/package.nix
index c3d396a03581..eb1eda130e5b 100644
--- a/pkgs/by-name/cr/crabfit-api/package.nix
+++ b/pkgs/by-name/cr/crabfit-api/package.nix
@@ -58,7 +58,7 @@ rustPlatform.buildRustPackage rec {
       openssl
       sqlite
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreFoundation
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/cr/cronutils/package.nix b/pkgs/by-name/cr/cronutils/package.nix
index f1060ba2d2cb..8c2c3d5213a8 100644
--- a/pkgs/by-name/cr/cronutils/package.nix
+++ b/pkgs/by-name/cr/cronutils/package.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   makeFlags = [ "prefix=$(out)" ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin (toString [
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin (toString [
     "-D_DARWIN_C_SOURCE"
     # runstat.c:81:81: error: format string is not a string literal
     "-Wno-format-nonliteral"
diff --git a/pkgs/by-name/cr/crunchy-cli/package.nix b/pkgs/by-name/cr/crunchy-cli/package.nix
index 4a5e9236ef9b..21a8a5b8cb34 100644
--- a/pkgs/by-name/cr/crunchy-cli/package.nix
+++ b/pkgs/by-name/cr/crunchy-cli/package.nix
@@ -26,13 +26,13 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/by-name/cy/cyme/package.nix b/pkgs/by-name/cy/cyme/package.nix
index d0ed49b7b267..401b175b463a 100644
--- a/pkgs/by-name/cy/cyme/package.nix
+++ b/pkgs/by-name/cy/cyme/package.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [
     pkg-config
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.DarwinTools
   ];
 
@@ -37,7 +37,7 @@ rustPlatform.buildRustPackage rec {
   checkFlags = [
     # doctest that requires access outside sandbox
     "--skip=udev::hwdb::get"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # system_profiler is not available in the sandbox
     "--skip=test_run"
   ];
diff --git a/pkgs/by-name/cz/czkawka/package.nix b/pkgs/by-name/cz/czkawka/package.nix
index 6e8cf21d298a..934b6d1dcafa 100644
--- a/pkgs/by-name/cz/czkawka/package.nix
+++ b/pkgs/by-name/cz/czkawka/package.nix
@@ -21,7 +21,7 @@
 
 let
   buildRustPackage' = rustPlatform.buildRustPackage.override {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 
   self = buildRustPackage' {
diff --git a/pkgs/by-name/da/darklua/package.nix b/pkgs/by-name/da/darklua/package.nix
index aa79d6048dd9..bf8576961b8b 100644
--- a/pkgs/by-name/da/darklua/package.nix
+++ b/pkgs/by-name/da/darklua/package.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-fYx+SQdQMnNSygr0/Y4zEPtqfQPZYmQUq3ndi1HlXuE=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
 
   # error: linker `aarch64-linux-gnu-gcc` not found
   postPatch = ''
diff --git a/pkgs/by-name/da/darktable/package.nix b/pkgs/by-name/da/darktable/package.nix
index 5ccb4d1b63dc..e3a32dba4658 100644
--- a/pkgs/by-name/da/darktable/package.nix
+++ b/pkgs/by-name/da/darktable/package.nix
@@ -106,17 +106,17 @@ stdenv.mkDerivation rec {
     libaom
     portmidi
     lua
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     colord
     colord-gtk
     libX11
     ocl-icd
-  ] ++ lib.optional stdenv.isDarwin gtk-mac-integration
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin gtk-mac-integration
   ++ lib.optional stdenv.cc.isClang llvmPackages.openmp;
 
   cmakeFlags = [
     "-DBUILD_USERMANUAL=False"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DUSE_COLORD=OFF"
     "-DUSE_KWALLET=OFF"
   ];
@@ -127,8 +127,8 @@ stdenv.mkDerivation rec {
   # the wrappers:
   preFixup =
     let
-      libPathEnvVar = if stdenv.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
-      libPathPrefix = "$out/lib/darktable" + lib.optionalString stdenv.isLinux ":${ocl-icd}/lib";
+      libPathEnvVar = if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
+      libPathPrefix = "$out/lib/darktable" + lib.optionalString stdenv.hostPlatform.isLinux ":${ocl-icd}/lib";
     in
     ''
       for f in $out/share/darktable/kernels/*.cl; do
diff --git a/pkgs/by-name/da/darling-dmg/package.nix b/pkgs/by-name/da/darling-dmg/package.nix
index 4fca75a45bc8..3053982a6476 100644
--- a/pkgs/by-name/da/darling-dmg/package.nix
+++ b/pkgs/by-name/da/darling-dmg/package.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ fuse openssl zlib bzip2 libxml2 icu lzfse ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   CXXFLAGS = [
     "-DCOMPILE_WITH_LZFSE=1"
diff --git a/pkgs/by-name/db/dbd/package.nix b/pkgs/by-name/db/dbd/package.nix
index 20658b4d716d..1df459cb3267 100644
--- a/pkgs/by-name/db/dbd/package.nix
+++ b/pkgs/by-name/db/dbd/package.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation {
   makeFlags = [
     "PREFIX=${placeholder "out"}"
     "CC=${stdenv.cc.targetPrefix}cc"
-  ] ++ lib.optionals stdenv.isDarwin [ "darwin" ] ++ lib.optionals (stdenv.hostPlatform.isUnix && !stdenv.isDarwin) [ "unix" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "darwin" ] ++ lib.optionals (stdenv.hostPlatform.isUnix && !stdenv.hostPlatform.isDarwin) [ "unix" ];
 
   meta = with lib; {
     description = "Netcat-clone, designed to be portable and offer strong encryption";
diff --git a/pkgs/by-name/db/dbeaver-bin/package.nix b/pkgs/by-name/db/dbeaver-bin/package.nix
index a8d3dbf0969f..9b5bf26200fb 100644
--- a/pkgs/by-name/db/dbeaver-bin/package.nix
+++ b/pkgs/by-name/db/dbeaver-bin/package.nix
@@ -41,22 +41,22 @@ stdenvNoCC.mkDerivation (finalAttrs: {
       inherit hash;
     };
 
-  sourceRoot = lib.optional stdenvNoCC.isDarwin "dbeaver.app";
+  sourceRoot = lib.optional stdenvNoCC.hostPlatform.isDarwin "dbeaver.app";
 
   nativeBuildInputs =
     [ makeWrapper ]
-    ++ lib.optionals (!stdenvNoCC.isDarwin) [
+    ++ lib.optionals (!stdenvNoCC.hostPlatform.isDarwin) [
       gnused
       wrapGAppsHook3
       autoPatchelfHook
     ]
-    ++ lib.optionals stdenvNoCC.isDarwin [ undmg ];
+    ++ lib.optionals stdenvNoCC.hostPlatform.isDarwin [ undmg ];
 
   dontConfigure = true;
   dontBuild = true;
 
   installPhase =
-    if !stdenvNoCC.isDarwin then
+    if !stdenvNoCC.hostPlatform.isDarwin then
       ''
         runHook preInstall
 
diff --git a/pkgs/by-name/db/dbgate/package.nix b/pkgs/by-name/db/dbgate/package.nix
index ab62dee5f391..58c88b65c0fe 100644
--- a/pkgs/by-name/db/dbgate/package.nix
+++ b/pkgs/by-name/db/dbgate/package.nix
@@ -40,7 +40,7 @@ let
     sourceProvenance = [ lib.sourceTypes.binaryNativeCode ];
   };
 in
-if stdenv.isDarwin then
+if stdenv.hostPlatform.isDarwin then
   stdenv.mkDerivation {
     inherit
       pname
diff --git a/pkgs/by-name/db/dbqn/package.nix b/pkgs/by-name/db/dbqn/package.nix
index 832148c928b0..7ec4dea05342 100644
--- a/pkgs/by-name/db/dbqn/package.nix
+++ b/pkgs/by-name/db/dbqn/package.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     maintainers = with maintainers; [ AndersonTorres sternenseemann ];
     inherit (jdk.meta) platforms;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/dbqn-native.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/dbqn-native.x86_64-darwin
   };
 }
 # TODO: Processing app
diff --git a/pkgs/by-name/de/debase/package.nix b/pkgs/by-name/de/debase/package.nix
index d204f161d09b..a2761056f116 100644
--- a/pkgs/by-name/de/debase/package.nix
+++ b/pkgs/by-name/de/debase/package.nix
@@ -53,11 +53,11 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     libgit2
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk_11_0.frameworks.Foundation ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk_11_0.frameworks.Foundation ];
 
   installPhase = ''
     runHook preInstall
-    install -Dm755 build-${if stdenv.isDarwin then "mac" else "linux"}/release/debase $out/bin/debase
+    install -Dm755 build-${if stdenv.hostPlatform.isDarwin then "mac" else "linux"}/release/debase $out/bin/debase
     runHook postInstall
   '';
 
@@ -65,9 +65,9 @@ stdenv.mkDerivation rec {
 
   makeFlags = [
     "ARCHS=${
-      if stdenv.isx86_64 then
+      if stdenv.hostPlatform.isx86_64 then
         "x86_64"
-      else if stdenv.isAarch64 then
+      else if stdenv.hostPlatform.isAarch64 then
         "arm64"
       else
         abort "unsupported system: ${stdenv.system}"
diff --git a/pkgs/by-name/de/deltachat-desktop/package.nix b/pkgs/by-name/de/deltachat-desktop/package.nix
index dd647ef0ebf2..78f7c75d4e03 100644
--- a/pkgs/by-name/de/deltachat-desktop/package.nix
+++ b/pkgs/by-name/de/deltachat-desktop/package.nix
@@ -53,13 +53,13 @@ buildNpmPackage rec {
     makeWrapper
     pkg-config
     python3
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     copyDesktopItems
   ];
 
   buildInputs = [
     deltachat-rpc-server
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/by-name/de/deploy-rs/package.nix b/pkgs/by-name/de/deploy-rs/package.nix
index 9830785e6a30..a4b85ff3dce9 100644
--- a/pkgs/by-name/de/deploy-rs/package.nix
+++ b/pkgs/by-name/de/deploy-rs/package.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage {
 
   cargoHash = "sha256-lsW810bktMzHZIbuN3pz9N+IUcjNtE5J2AuB/G6pGWI=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/de/devenv/package.nix b/pkgs/by-name/de/devenv/package.nix
index 29c8333e4117..f940c8390f7b 100644
--- a/pkgs/by-name/de/devenv/package.nix
+++ b/pkgs/by-name/de/devenv/package.nix
@@ -45,7 +45,7 @@ in rustPlatform.buildRustPackage {
 
   nativeBuildInputs = [ makeWrapper pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/by-name/de/dezoomify-rs/package.nix b/pkgs/by-name/de/dezoomify-rs/package.nix
index c639c99b1b64..2443c1aa6adb 100644
--- a/pkgs/by-name/de/dezoomify-rs/package.nix
+++ b/pkgs/by-name/de/dezoomify-rs/package.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-K9LNommagWjVxOXq6YUE4eg/3zpj3+MR5BugGCcVUlA=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks;
     [
       SystemConfiguration
diff --git a/pkgs/by-name/di/dialog/package.nix b/pkgs/by-name/di/dialog/package.nix
index 23f75bb1c994..9ef364729933 100644
--- a/pkgs/by-name/di/dialog/package.nix
+++ b/pkgs/by-name/di/dialog/package.nix
@@ -3,7 +3,7 @@
 , fetchurl
 , libtool
 , ncurses
-, enableShared ? !stdenv.isDarwin && !stdenv.hostPlatform.isStatic
+, enableShared ? !stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isStatic
 , unicodeSupport ? true
 , withLibrary ? true
 }:
diff --git a/pkgs/by-name/di/diesel-cli/package.nix b/pkgs/by-name/di/diesel-cli/package.nix
index 6dc17f197d2b..04f610061599 100644
--- a/pkgs/by-name/di/diesel-cli/package.nix
+++ b/pkgs/by-name/di/diesel-cli/package.nix
@@ -44,8 +44,8 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security
-    ++ lib.optional (stdenv.isDarwin && mysqlSupport) libiconv
+    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security
+    ++ lib.optional (stdenv.hostPlatform.isDarwin && mysqlSupport) libiconv
     ++ lib.optional sqliteSupport sqlite
     ++ lib.optional postgresqlSupport postgresql
     ++ lib.optionals mysqlSupport [
diff --git a/pkgs/by-name/di/dim/package.nix b/pkgs/by-name/di/dim/package.nix
index f7fe86ab9a98..53ab3a0ed685 100644
--- a/pkgs/by-name/di/dim/package.nix
+++ b/pkgs/by-name/di/dim/package.nix
@@ -77,7 +77,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ sqlite ]
-    ++ lib.optional stdenv.isDarwin [
+    ++ lib.optional stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.CoreServices
       darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/di/disarchive/package.nix b/pkgs/by-name/di/disarchive/package.nix
index 9bc24e531552..8b908d40a659 100644
--- a/pkgs/by-name/di/disarchive/package.nix
+++ b/pkgs/by-name/di/disarchive/package.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
     guile-lzma
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   nativeCheckInputs = [
     guile-quickcheck
diff --git a/pkgs/by-name/di/discord-gamesdk/package.nix b/pkgs/by-name/di/discord-gamesdk/package.nix
index 7f38bfd45760..5d7a8185be45 100644
--- a/pkgs/by-name/di/discord-gamesdk/package.nix
+++ b/pkgs/by-name/di/discord-gamesdk/package.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ (stdenv.cc.cc.libgcc or null) ];
 
-  nativeBuildInputs = lib.optional stdenv.isLinux autoPatchelfHook;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isLinux autoPatchelfHook;
 
   installPhase =
     let
diff --git a/pkgs/by-name/dm/dmd/generic.nix b/pkgs/by-name/dm/dmd/generic.nix
index 51c814832072..cf8cae7b4f5a 100644
--- a/pkgs/by-name/dm/dmd/generic.nix
+++ b/pkgs/by-name/dm/dmd/generic.nix
@@ -37,7 +37,7 @@ let
 
   bits = builtins.toString stdenv.hostPlatform.parsed.cpu.bits;
   osname =
-    if stdenv.isDarwin then
+    if stdenv.hostPlatform.isDarwin then
       "osx"
     else
       stdenv.hostPlatform.parsed.kernel.name;
@@ -106,9 +106,9 @@ stdenv.mkDerivation (finalAttrs: {
     rm dmd/compiler/test/dshell/test6952.d
   '' + lib.optionalString (lib.versionAtLeast version "2.092.2") ''
     substituteInPlace dmd/compiler/test/dshell/test6952.d --replace-fail "/usr/bin/env bash" "${bash}/bin/bash"
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace phobos/std/socket.d --replace-fail "assert(ih.addrList[0] == 0x7F_00_00_01);" ""
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace phobos/std/socket.d --replace-fail "foreach (name; names)" "names = []; foreach (name; names)"
   '';
 
@@ -123,7 +123,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     curl
     tzdata
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Foundation
   ];
 
@@ -224,6 +224,6 @@ stdenv.mkDerivation (finalAttrs: {
     platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
     # ld: section __DATA/__thread_bss has type zero-fill but non-zero file offset file '/private/tmp/nix-build-dmd-2.109.1.drv-0/.rdmd-301/rdmd-build.d-A1CF043A7D87C5E88A58F3C0EF5A0DF7/objs/build.o' for architecture x86_64
     # clang-16: error: linker command failed with exit code 1 (use -v to see invocation)
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 })
diff --git a/pkgs/by-name/do/docfd/package.nix b/pkgs/by-name/do/docfd/package.nix
index 11ddaace86fe..e4828191c0c6 100644
--- a/pkgs/by-name/do/docfd/package.nix
+++ b/pkgs/by-name/do/docfd/package.nix
@@ -16,7 +16,7 @@
 let
   # Needed for x86_64-darwin
   buildDunePackage' = ocamlPackages.buildDunePackage.override {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 in
 buildDunePackage' rec {
diff --git a/pkgs/by-name/do/docuum/package.nix b/pkgs/by-name/do/docuum/package.nix
index 3eae913da1e1..68409ca05651 100644
--- a/pkgs/by-name/do/docuum/package.nix
+++ b/pkgs/by-name/do/docuum/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
     "--skip=format::tests::code_str_display"
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.IOKit
   ];
 
diff --git a/pkgs/by-name/do/dogedns/package.nix b/pkgs/by-name/do/dogedns/package.nix
index 0c94a9506d2c..c6afe1ab7822 100644
--- a/pkgs/by-name/do/dogedns/package.nix
+++ b/pkgs/by-name/do/dogedns/package.nix
@@ -29,9 +29,9 @@ rustPlatform.buildRustPackage rec {
   ];
 
   nativeBuildInputs = [ installShellFiles pandoc ]
-    ++ lib.optionals stdenv.isLinux [ pkg-config ];
-  buildInputs = lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
  postInstall = ''
     installShellCompletion completions/doge.{bash,fish,zsh}
diff --git a/pkgs/by-name/do/dosbox-staging/package.nix b/pkgs/by-name/do/dosbox-staging/package.nix
index f4cab21b1b30..d23466447ecc 100644
--- a/pkgs/by-name/do/dosbox-staging/package.nix
+++ b/pkgs/by-name/do/dosbox-staging/package.nix
@@ -80,8 +80,8 @@ stdenv.mkDerivation (finalAttrs: {
       speexdsp
       zlib-ng
     ]
-    ++ lib.optionals stdenv.isLinux [ alsa-lib ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         AudioUnit
diff --git a/pkgs/by-name/do/dotter/package.nix b/pkgs/by-name/do/dotter/package.nix
index 441fbf6cc4e8..e2897b83a348 100644
--- a/pkgs/by-name/do/dotter/package.nix
+++ b/pkgs/by-name/do/dotter/package.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-LEOORHD0j+HVl/fB9Q2xVZ2AxZKsPE5SeOS1ZsKwTSo=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
 
   nativeCheckInputs = [
     which
diff --git a/pkgs/by-name/ds/dssat/package.nix b/pkgs/by-name/ds/dssat/package.nix
index 7d57195dcde4..4b40302c415d 100644
--- a/pkgs/by-name/ds/dssat/package.nix
+++ b/pkgs/by-name/ds/dssat/package.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation (final: {
     makeWrapper
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ glibc.static ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ glibc.static ];
 
   cmakeFlags = [ "-DCMAKE_INSTALL_PREFIX=${placeholder "out"}/share/dssat/" ];
 
@@ -69,6 +69,6 @@ stdenv.mkDerivation (final: {
     license = lib.licenses.bsd3;
     maintainers = with lib.maintainers; [ pcboy ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isAarch64 && stdenv.isLinux;
+    broken = stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux;
   };
 })
diff --git a/pkgs/by-name/du/dub/package.nix b/pkgs/by-name/du/dub/package.nix
index 1416b06fc13f..c6782b49070e 100644
--- a/pkgs/by-name/du/dub/package.nix
+++ b/pkgs/by-name/du/dub/package.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
     runHook postBuild
   '';
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/by-name/du/dublin-traceroute/package.nix b/pkgs/by-name/du/dublin-traceroute/package.nix
index 5e797cf97b57..0ec5ac87ef61 100644
--- a/pkgs/by-name/du/dublin-traceroute/package.nix
+++ b/pkgs/by-name/du/dublin-traceroute/package.nix
@@ -37,6 +37,6 @@ stdenv.mkDerivation {
     maintainers = with maintainers; [ baloo ];
     platforms = platforms.unix;
     mainProgram = "dublin-traceroute";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/du/dumbpipe/package.nix b/pkgs/by-name/du/dumbpipe/package.nix
index 9dc1e12cbac9..4e6bad9004c5 100644
--- a/pkgs/by-name/du/dumbpipe/package.nix
+++ b/pkgs/by-name/du/dumbpipe/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-rlhfGw/b0HnV1Xl9VWIqEuyM9pq29O6bpaawk2hnG+o=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks; [
       SystemConfiguration
     ]
diff --git a/pkgs/by-name/du/dummyhttp/package.nix b/pkgs/by-name/du/dummyhttp/package.nix
index 0676e970a81f..59ca3d3344a0 100644
--- a/pkgs/by-name/du/dummyhttp/package.nix
+++ b/pkgs/by-name/du/dummyhttp/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-bw0VlPHjNZkpLVJZrB3aaQGkwvQpkJGIn+hi0yn2M4s=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/du/dune3d/package.nix b/pkgs/by-name/du/dune3d/package.nix
index 122a9691c53b..b1e1863581b8 100644
--- a/pkgs/by-name/du/dune3d/package.nix
+++ b/pkgs/by-name/du/dune3d/package.nix
@@ -24,7 +24,7 @@
 }:
 
 let
-  stdenv' = if stdenv.isDarwin then llvmPackages_17.stdenv else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then llvmPackages_17.stdenv else stdenv;
   opencascade-occt = opencascade-occt_7_6;
 in
 stdenv'.mkDerivation (finalAttrs: {
@@ -45,7 +45,7 @@ stdenv'.mkDerivation (finalAttrs: {
     pkg-config
     wrapGAppsHook3
     libxml2 # for xmllints
-  ] ++ lib.optional stdenv.isDarwin desktopToDarwinBundle;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   buildInputs = [
     cmake
@@ -55,7 +55,7 @@ stdenv'.mkDerivation (finalAttrs: {
     libepoxy
     librsvg
     libspnav
-    (if stdenv.isLinux then libuuid else libossp_uuid)
+    (if stdenv.hostPlatform.isLinux then libuuid else libossp_uuid)
     opencascade-occt
     (python3.withPackages (pp: [
       pp.pygobject3
diff --git a/pkgs/by-name/du/dust/package.nix b/pkgs/by-name/du/dust/package.nix
index cf13173519ac..53b095574898 100644
--- a/pkgs/by-name/du/dust/package.nix
+++ b/pkgs/by-name/du/dust/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ AppKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ];
 
   doCheck = false;
 
diff --git a/pkgs/by-name/dx/dxvk/package.nix b/pkgs/by-name/dx/dxvk/package.nix
index 9a82a2a20b57..144bfe33609b 100644
--- a/pkgs/by-name/dx/dxvk/package.nix
+++ b/pkgs/by-name/dx/dxvk/package.nix
@@ -26,7 +26,7 @@ stdenvNoCC.mkDerivation (
     mingwW64Stdenv = useWin32ThreadModel pkgsCross.mingwW64.stdenv;
 
     dxvk32 =
-      if stdenvNoCC.isDarwin then
+      if stdenvNoCC.hostPlatform.isDarwin then
         pkgsCross.mingw32.dxvk_1.override {
           stdenv = mingw32Stdenv;
           enableMoltenVKCompat = true;
@@ -35,7 +35,7 @@ stdenvNoCC.mkDerivation (
         pkgsCross.mingw32.dxvk_2.override { stdenv = mingw32Stdenv; };
 
     dxvk64 =
-      if stdenvNoCC.isDarwin then
+      if stdenvNoCC.hostPlatform.isDarwin then
         pkgsCross.mingwW64.dxvk_1.override {
           stdenv = mingwW64Stdenv;
           enableMoltenVKCompat = true;
diff --git a/pkgs/by-name/ea/easytier/package.nix b/pkgs/by-name/ea/easytier/package.nix
index 9928fd07b0db..7deb797435f6 100644
--- a/pkgs/by-name/ea/easytier/package.nix
+++ b/pkgs/by-name/ea/easytier/package.nix
@@ -24,12 +24,12 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ protobuf ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
-  buildNoDefaultFeatures = stdenv.isMips;
-  buildFeatures = lib.optional stdenv.isMips "mips" ++ lib.optional withQuic "quic";
+  buildNoDefaultFeatures = stdenv.hostPlatform.isMips;
+  buildFeatures = lib.optional stdenv.hostPlatform.isMips "mips" ++ lib.optional withQuic "quic";
 
   doCheck = false; # tests failed due to heavy rely on network
 
diff --git a/pkgs/by-name/ed/edk2/package.nix b/pkgs/by-name/ed/edk2/package.nix
index 0f50c45e6487..b4919f27efb0 100644
--- a/pkgs/by-name/ed/edk2/package.nix
+++ b/pkgs/by-name/ed/edk2/package.nix
@@ -13,13 +13,13 @@
 let
   pythonEnv = buildPackages.python3.withPackages (ps: [ps.tkinter]);
 
-targetArch = if stdenv.isi686 then
+targetArch = if stdenv.hostPlatform.isi686 then
   "IA32"
-else if stdenv.isx86_64 then
+else if stdenv.hostPlatform.isx86_64 then
   "X64"
-else if stdenv.isAarch32 then
+else if stdenv.hostPlatform.isAarch32 then
   "ARM"
-else if stdenv.isAarch64 then
+else if stdenv.hostPlatform.isAarch64 then
   "AARCH64"
 else if stdenv.hostPlatform.isRiscV64 then
   "RISCV64"
@@ -28,7 +28,7 @@ else if stdenv.hostPlatform.isLoongArch64 then
 else
   throw "Unsupported architecture";
 
-buildType = if stdenv.isDarwin then
+buildType = if stdenv.hostPlatform.isDarwin then
     "CLANGPDB"
   else
     "GCC5";
@@ -108,7 +108,7 @@ edk2 = stdenv.mkDerivation {
 
   env.NIX_CFLAGS_COMPILE = "-Wno-return-type"
     + lib.optionalString (stdenv.cc.isGNU) " -Wno-error=stringop-truncation"
-    + lib.optionalString (stdenv.isDarwin) " -Wno-error=macro-redefined";
+    + lib.optionalString (stdenv.hostPlatform.isDarwin) " -Wno-error=macro-redefined";
 
   hardeningDisable = [ "format" "fortify" ];
 
diff --git a/pkgs/by-name/ek/ekho/package.nix b/pkgs/by-name/ek/ekho/package.nix
index 043908298266..818c113ba0c2 100644
--- a/pkgs/by-name/ek/ekho/package.nix
+++ b/pkgs/by-name/ek/ekho/package.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ pkg-config autoconf automake libtool ];
 
   buildInputs = [ libsndfile libpulseaudio espeak-ng sonic utf8cpp ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.AudioUnit ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.AudioUnit ];
 
   meta = with lib; {
     description = "Chinese text-to-speech software";
diff --git a/pkgs/by-name/en/en-croissant/package.nix b/pkgs/by-name/en/en-croissant/package.nix
index b21364ed9e46..72019cbcb9c9 100644
--- a/pkgs/by-name/en/en-croissant/package.nix
+++ b/pkgs/by-name/en/en-croissant/package.nix
@@ -21,7 +21,7 @@
 
 let
   buildRustPackage = rustPlatform.buildRustPackage.override {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 in
 buildRustPackage rec {
@@ -59,11 +59,11 @@ buildRustPackage rec {
       cargo-tauri
       pkg-config
     ]
-    ++ lib.optionals stdenv.isLinux [ wrapGAppsHook3 ]
-    ++ lib.optionals stdenv.isDarwin [ makeBinaryWrapper ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ wrapGAppsHook3 ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ makeBinaryWrapper ];
 
   buildInputs =
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       openssl
       libsoup
       webkitgtk
@@ -72,7 +72,7 @@ buildRustPackage rec {
       gst_all_1.gst-plugins-bad
       gst_all_1.gst-plugins-good
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk_11_0.frameworks.Cocoa
       darwin.apple_sdk_11_0.frameworks.WebKit
     ];
@@ -82,7 +82,7 @@ buildRustPackage rec {
   buildPhase = ''
     runHook preBuild
 
-    cargo tauri build --bundles ${if stdenv.isDarwin then "app" else "deb"}
+    cargo tauri build --bundles ${if stdenv.hostPlatform.isDarwin then "app" else "deb"}
 
     runHook postBuild
   '';
@@ -93,12 +93,12 @@ buildRustPackage rec {
   installPhase = ''
     runHook preInstall
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p "$out"/Applications
       cp -r src-tauri/target/release/bundle/macos/* "$out"/Applications
     ''}
 
-    ${lib.optionalString stdenv.isLinux ''
+    ${lib.optionalString stdenv.hostPlatform.isLinux ''
       mkdir -p "$out"
       cp -r src-tauri/target/release/bundle/deb/*/data/usr/* "$out"
     ''}
@@ -106,7 +106,7 @@ buildRustPackage rec {
     runHook postInstall
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     makeWrapper "$out"/Applications/en-croissant.app/Contents/MacOS/en-croissant $out/bin/en-croissant
   '';
 
diff --git a/pkgs/by-name/en/envio/package.nix b/pkgs/by-name/en/envio/package.nix
index 0424bcf4e9bd..b1037be41ac7 100644
--- a/pkgs/by-name/en/envio/package.nix
+++ b/pkgs/by-name/en/envio/package.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ libgpg-error gpgme ]
-    ++ lib.optionals stdenv.isDarwin [ Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   # Remove postPatch when updating to the next envio release
   # For details see https://github.com/envio-cli/envio/pull/31
diff --git a/pkgs/by-name/en/envoy/package.nix b/pkgs/by-name/en/envoy/package.nix
index 425184598af6..b6a0b7701410 100644
--- a/pkgs/by-name/en/envoy/package.nix
+++ b/pkgs/by-name/en/envoy/package.nix
@@ -172,7 +172,7 @@ buildBazelPackage {
 
       "--define=wasm=${wasmRuntime}"
     ]
-    ++ (lib.optionals stdenv.isAarch64 [
+    ++ (lib.optionals stdenv.hostPlatform.isAarch64 [
       # external/com_github_google_tcmalloc/tcmalloc/internal/percpu_tcmalloc.h:611:9: error: expected ':' or '::' before '[' token
       #   611 |       : [end_ptr] "=&r"(end_ptr), [cpu_id] "=&r"(cpu_id),
       #       |         ^
diff --git a/pkgs/by-name/ep/epoll-shim/package.nix b/pkgs/by-name/ep/epoll-shim/package.nix
index bbb49c8ec7c0..63deaaf9df9e 100644
--- a/pkgs/by-name/ep/epoll-shim/package.nix
+++ b/pkgs/by-name/ep/epoll-shim/package.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # https://github.com/jiixyj/epoll-shim/issues/41
   # https://github.com/jiixyj/epoll-shim/pull/34
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Small epoll implementation using kqueue";
diff --git a/pkgs/by-name/es/eslint/package.nix b/pkgs/by-name/es/eslint/package.nix
index b1e2732a2804..6ad9acd2afc0 100644
--- a/pkgs/by-name/es/eslint/package.nix
+++ b/pkgs/by-name/es/eslint/package.nix
@@ -7,7 +7,7 @@
 }:
 let
   buildNpmPackage' = buildNpmPackage.override {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 in
 buildNpmPackage' rec {
diff --git a/pkgs/by-name/es/espflash/package.nix b/pkgs/by-name/es/espflash/package.nix
index 2b6baaf48e9f..aad2b117ebb4 100644
--- a/pkgs/by-name/es/espflash/package.nix
+++ b/pkgs/by-name/es/espflash/package.nix
@@ -32,9 +32,9 @@ rustPlatform.buildRustPackage rec {
   # Needed to get openssl-sys to use pkg-config.
   OPENSSL_NO_VENDOR = 1;
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isLinux [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     udev
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     Security
     SystemConfiguration
diff --git a/pkgs/by-name/ev/evebox/package.nix b/pkgs/by-name/ev/evebox/package.nix
index 29062726c15e..4b09fba8675b 100644
--- a/pkgs/by-name/ev/evebox/package.nix
+++ b/pkgs/by-name/ev/evebox/package.nix
@@ -28,6 +28,6 @@ rustPlatform.buildRustPackage rec {
     changelog = "https://github.com/jasonish/evebox/releases/tag/${src.rev}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ felbinger ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/ev/evolution-data-server/package.nix b/pkgs/by-name/ev/evolution-data-server/package.nix
index 228e20ae0eab..91e9ebba95d3 100644
--- a/pkgs/by-name/ev/evolution-data-server/package.nix
+++ b/pkgs/by-name/ev/evolution-data-server/package.nix
@@ -30,7 +30,7 @@
 , ninja
 , libkrb5
 , openldap
-, enableOAuth2 ? stdenv.isLinux
+, enableOAuth2 ? stdenv.hostPlatform.isLinux
 , webkitgtk_4_1
 , webkitgtk_6_0
 , json-glib
@@ -106,7 +106,7 @@ stdenv.mkDerivation rec {
     libphonenumber
     boost
     protobuf
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ] ++ lib.optionals withGtk3 [
     gtk3
@@ -141,14 +141,14 @@ stdenv.mkDerivation rec {
     "-DENABLE_OAUTH2_WEBKITGTK4=${lib.boolToString (withGtk4 && enableOAuth2)}"
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace cmake/modules/SetupBuildFlags.cmake \
       --replace "-Wl,--no-undefined" ""
     substituteInPlace src/services/evolution-alarm-notify/e-alarm-notify.c \
       --replace "G_OS_WIN32" "__APPLE__"
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     ln -s $out/lib/evolution-data-server/*.dylib $out/lib/
   '';
 
diff --git a/pkgs/by-name/ew/eww/package.nix b/pkgs/by-name/ew/eww/package.nix
index 1c3ba7798c1f..41bf6c7b5500 100644
--- a/pkgs/by-name/ew/eww/package.nix
+++ b/pkgs/by-name/ew/eww/package.nix
@@ -72,6 +72,6 @@ rustPlatform.buildRustPackage rec {
       w-lfchen
     ];
     mainProgram = "eww";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/ex/ext4fuse/package.nix b/pkgs/by-name/ex/ext4fuse/package.nix
index b083ec1c63f4..4ab5612fe8f5 100644
--- a/pkgs/by-name/ex/ext4fuse/package.nix
+++ b/pkgs/by-name/ex/ext4fuse/package.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation (finalAttrs: {
     which
   ];
 
-  buildInputs = [ (if stdenv.isDarwin then macfuse-stubs else fuse) ];
+  buildInputs = [ (if stdenv.hostPlatform.isDarwin then macfuse-stubs else fuse) ];
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/by-name/ez/eza/package.nix b/pkgs/by-name/ez/eza/package.nix
index 627376f49d2d..3380e98a1171 100644
--- a/pkgs/by-name/ez/eza/package.nix
+++ b/pkgs/by-name/ez/eza/package.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ cmake pkg-config installShellFiles pandoc ];
   buildInputs = [ zlib ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
 
   buildNoDefaultFeatures = true;
   buildFeatures = lib.optional gitSupport "git";
diff --git a/pkgs/by-name/fa/facter/package.nix b/pkgs/by-name/fa/facter/package.nix
index fa92def6b1bc..8d5f3bc03add 100644
--- a/pkgs/by-name/fa/facter/package.nix
+++ b/pkgs/by-name/fa/facter/package.nix
@@ -35,7 +35,7 @@ bundlerApp {
           procps
           util-linux
         ]
-        ++ lib.optionals stdenv.isLinux [
+        ++ lib.optionals stdenv.hostPlatform.isLinux [
           iproute2
           virt-what
           zfs
diff --git a/pkgs/by-name/fa/fail2ban/package.nix b/pkgs/by-name/fa/fail2ban/package.nix
index 20f89c501dde..6943ccc447a0 100644
--- a/pkgs/by-name/fa/fail2ban/package.nix
+++ b/pkgs/by-name/fa/fail2ban/package.nix
@@ -23,7 +23,7 @@ python3.pkgs.buildPythonApplication rec {
   nativeBuildInputs = [ installShellFiles ];
 
   pythonPath = with python3.pkgs;
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       systemd
       pyinotify
 
@@ -83,7 +83,7 @@ python3.pkgs.buildPythonApplication rec {
       rm $out/bin/fail2ban-python
       ln -s ${python3.interpreter} $out/bin/fail2ban-python
 
-    '' + lib.optionalString stdenv.isLinux ''
+    '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       # see https://github.com/NixOS/nixpkgs/issues/4968
       rm -r "${sitePackages}/usr"
     '';
diff --git a/pkgs/by-name/fa/fastfetch/package.nix b/pkgs/by-name/fa/fastfetch/package.nix
index 05723d9fa4a6..3a52b165b58a 100644
--- a/pkgs/by-name/fa/fastfetch/package.nix
+++ b/pkgs/by-name/fa/fastfetch/package.nix
@@ -43,7 +43,7 @@
   x11Support ? true,
 }:
 let
-  stdenv' = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
 in
 stdenv'.mkDerivation (finalAttrs: {
   pname = "fastfetch";
@@ -77,7 +77,7 @@ stdenv'.mkDerivation (finalAttrs: {
       sqlite
       yyjson
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       dbus
       dconf
       ddcutil
@@ -103,8 +103,8 @@ stdenv'.mkDerivation (finalAttrs: {
       xorg.libXdmcp
       xorg.libXext
     ]
-    ++ lib.optionals (x11Support && (!stdenv.isDarwin)) [ xfce.xfconf ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals (x11Support && (!stdenv.hostPlatform.isDarwin)) [ xfce.xfconf ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk_11_0.frameworks;
       [
         Apple80211
@@ -138,10 +138,10 @@ stdenv'.mkDerivation (finalAttrs: {
       (lib.cmakeBool "ENABLE_X11" x11Support)
       (lib.cmakeBool "ENABLE_XCB" x11Support)
       (lib.cmakeBool "ENABLE_XCB_RANDR" x11Support)
-      (lib.cmakeBool "ENABLE_XFCONF" (x11Support && (!stdenv.isDarwin)))
+      (lib.cmakeBool "ENABLE_XFCONF" (x11Support && (!stdenv.hostPlatform.isDarwin)))
       (lib.cmakeBool "ENABLE_XRANDR" x11Support)
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       (lib.cmakeOptionType "filepath" "CUSTOM_PCI_IDS_PATH" "${hwdata}/share/hwdata/pci.ids")
       (lib.cmakeOptionType "filepath" "CUSTOM_AMDGPU_IDS_PATH" "${libdrm}/share/libdrm/amdgpu.ids")
     ];
diff --git a/pkgs/by-name/fa/fastqc/package.nix b/pkgs/by-name/fa/fastqc/package.nix
index e7973ab0d602..9c63a98e7711 100644
--- a/pkgs/by-name/fa/fastqc/package.nix
+++ b/pkgs/by-name/fa/fastqc/package.nix
@@ -23,8 +23,8 @@ stdenv.mkDerivation (finalAttrs: {
   dontBuild = true;
 
   nativeBuildInputs = [ makeWrapper imagemagick ]
-                      ++ lib.optional stdenv.isLinux copyDesktopItems # postInstallHook
-                      ++ lib.optional stdenv.isDarwin desktopToDarwinBundle; #fixupOutputHook
+                      ++ lib.optional stdenv.hostPlatform.isLinux copyDesktopItems # postInstallHook
+                      ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle; #fixupOutputHook
   buildInputs = [ jre perl];
 
   desktopItem = (makeDesktopItem {
diff --git a/pkgs/by-name/fa/fatrop/package.nix b/pkgs/by-name/fa/fatrop/package.nix
index e85eede1e2d9..87d66c67802a 100644
--- a/pkgs/by-name/fa/fatrop/package.nix
+++ b/pkgs/by-name/fa/fatrop/package.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs =
     [ blasfeo ]
     ++ lib.optionals pythonSupport [ python3Packages.pybind11 ]
-    ++ lib.optionals stdenv.isDarwin [ llvmPackages.openmp ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ llvmPackages.openmp ];
 
   cmakeFlags = [
     (lib.cmakeBool "BUILD_DOCS" true)
diff --git a/pkgs/by-name/fe/febio-studio/package.nix b/pkgs/by-name/fe/febio-studio/package.nix
index 654046067dc8..5897fae85a1a 100644
--- a/pkgs/by-name/fe/febio-studio/package.nix
+++ b/pkgs/by-name/fe/febio-studio/package.nix
@@ -25,7 +25,7 @@
 
 let
   stdenv' =
-    if stdenv.isDarwin then
+    if stdenv.hostPlatform.isDarwin then
       overrideSDK stdenv {
         darwinSdkVersion = "11.0";
         darwinMinVersion = "10.15";
diff --git a/pkgs/by-name/fe/febio/package.nix b/pkgs/by-name/fe/febio/package.nix
index 01897ae76036..3f70ad711d76 100644
--- a/pkgs/by-name/fe/febio/package.nix
+++ b/pkgs/by-name/fe/febio/package.nix
@@ -14,7 +14,7 @@
 }:
 
 let
-  stdenv' = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
 in
 
 stdenv'.mkDerivation (finalAttrs: {
@@ -56,7 +56,7 @@ stdenv'.mkDerivation (finalAttrs: {
   buildInputs =
     [ zlib ]
     ++ lib.optionals mklSupport [ mkl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreGraphics
       darwin.apple_sdk.frameworks.CoreVideo
       darwin.apple_sdk.frameworks.Accelerate
diff --git a/pkgs/by-name/fe/fedimint/package.nix b/pkgs/by-name/fe/fedimint/package.nix
index 0e38132affc4..f282b70c4ded 100644
--- a/pkgs/by-name/fe/fedimint/package.nix
+++ b/pkgs/by-name/fe/fedimint/package.nix
@@ -17,7 +17,7 @@ let
   # Rust rocksdb bindings have C++ compilation/linking errors on Darwin when using newer clang
   # Forcing it to clang 12 fixes the issue.
   buildRustPackage =
-    if stdenv.isDarwin then
+    if stdenv.hostPlatform.isDarwin then
       rustPlatform.buildRustPackage.override { stdenv = llvmPackages_12.stdenv; }
     else
       rustPlatform.buildRustPackage;
@@ -44,7 +44,7 @@ buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     libiconv
     Security
diff --git a/pkgs/by-name/fe/feishin/package.nix b/pkgs/by-name/fe/feishin/package.nix
index 99307c37dcea..0ed5aed53c6a 100644
--- a/pkgs/by-name/fe/feishin/package.nix
+++ b/pkgs/by-name/fe/feishin/package.nix
@@ -34,8 +34,8 @@ buildNpmPackage {
   env.ELECTRON_SKIP_BINARY_DOWNLOAD = "1";
 
   nativeBuildInputs =
-    lib.optionals (stdenv.isLinux) [ copyDesktopItems ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.autoSignDarwinBinariesHook ];
+    lib.optionals (stdenv.hostPlatform.isLinux) [ copyDesktopItems ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.autoSignDarwinBinariesHook ];
 
   postPatch =
     ''
@@ -47,7 +47,7 @@ buildNpmPackage {
       substituteInPlace src/main/main.ts \
         --replace-fail "autoUpdater.checkForUpdatesAndNotify();" ""
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       # https://github.com/electron/electron/issues/31121
       substituteInPlace src/main/main.ts \
         --replace-fail "process.resourcesPath" "'$out/share/feishin/resources'"
@@ -77,7 +77,7 @@ buildNpmPackage {
     '';
 
   postBuild =
-    lib.optionalString stdenv.isDarwin ''
+    lib.optionalString stdenv.hostPlatform.isDarwin ''
       # electron-builder appears to build directly on top of Electron.app, by overwriting the files in the bundle.
       cp -r ${electron.dist}/Electron.app ./
       find ./Electron.app -name 'Info.plist' | xargs -d '\n' chmod +rw
@@ -90,7 +90,7 @@ buildNpmPackage {
     + ''
       npm exec electron-builder -- \
         --dir \
-        -c.electronDist=${if stdenv.isDarwin then "./" else electron.dist} \
+        -c.electronDist=${if stdenv.hostPlatform.isDarwin then "./" else electron.dist} \
         -c.electronVersion=${electron.version} \
         -c.npmRebuild=false
     '';
@@ -99,12 +99,12 @@ buildNpmPackage {
     ''
       runHook preInstall
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/{Applications,bin}
       cp -r release/build/**/Feishin.app $out/Applications/
       makeWrapper $out/Applications/Feishin.app/Contents/MacOS/Feishin $out/bin/feishin
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       mkdir -p $out/share/feishin
       pushd release/build/*/
       cp -r locales resources{,.pak} $out/share/feishin
diff --git a/pkgs/by-name/fi/fim-rs/package.nix b/pkgs/by-name/fi/fim-rs/package.nix
index f2b1cf85dff6..2b1cdc313ce3 100644
--- a/pkgs/by-name/fi/fim-rs/package.nix
+++ b/pkgs/by-name/fi/fim-rs/package.nix
@@ -34,7 +34,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     bzip2
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.Security
diff --git a/pkgs/by-name/fi/firefoxpwa/package.nix b/pkgs/by-name/fi/firefoxpwa/package.nix
index 45c837756867..13ca4fbcd6c1 100644
--- a/pkgs/by-name/fi/firefoxpwa/package.nix
+++ b/pkgs/by-name/fi/firefoxpwa/package.nix
@@ -69,7 +69,7 @@ rustPlatform.buildRustPackage rec {
   libs =
     let
       libs =
-        lib.optionals stdenv.isLinux [
+        lib.optionals stdenv.hostPlatform.isLinux [
           cups
           ffmpeg
           libglvnd
diff --git a/pkgs/by-name/fi/fittrackee/package.nix b/pkgs/by-name/fi/fittrackee/package.nix
index 467e65f04434..e12db808ac2d 100644
--- a/pkgs/by-name/fi/fittrackee/package.nix
+++ b/pkgs/by-name/fi/fittrackee/package.nix
@@ -98,7 +98,7 @@ python.pkgs.buildPythonApplication rec {
     export DATABASE_TEST_URL=postgresql://$PGUSER/$PGDATABASE?host=$PGHOST
   '';
 
-  doCheck = !stdenv.isDarwin; # tests are a bit flaky on darwin
+  doCheck = !stdenv.hostPlatform.isDarwin; # tests are a bit flaky on darwin
 
   preCheck = ''
     export TMP=$TMPDIR
diff --git a/pkgs/by-name/fj/fjo/package.nix b/pkgs/by-name/fj/fjo/package.nix
index d451f8342671..7671073cd3ee 100644
--- a/pkgs/by-name/fj/fjo/package.nix
+++ b/pkgs/by-name/fj/fjo/package.nix
@@ -23,6 +23,6 @@ rustPlatform.buildRustPackage rec {
     license = lib.licenses.agpl3Only;
     mainProgram = "berg";
     maintainers = with lib.maintainers; [ ehmry ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/fl/flake-checker/package.nix b/pkgs/by-name/fl/flake-checker/package.nix
index 5ccab79d9718..80512e1bf7d9 100644
--- a/pkgs/by-name/fl/flake-checker/package.nix
+++ b/pkgs/by-name/fl/flake-checker/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-0iH5owyNfIpRz6nYwrJUoqd9lVGZ3T3K8rmsOk2UoGI=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     Security
     SystemConfiguration
   ]);
diff --git a/pkgs/by-name/fl/flake-edit/package.nix b/pkgs/by-name/fl/flake-edit/package.nix
index e3d0522026d0..cfe799a143e9 100644
--- a/pkgs/by-name/fl/flake-edit/package.nix
+++ b/pkgs/by-name/fl/flake-edit/package.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
     [
       openssl
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
     ];
diff --git a/pkgs/by-name/fl/flameshot/package.nix b/pkgs/by-name/fl/flameshot/package.nix
index c86e5cc62bc8..3c60703a3a36 100644
--- a/pkgs/by-name/fl/flameshot/package.nix
+++ b/pkgs/by-name/fl/flameshot/package.nix
@@ -16,10 +16,10 @@
   enableMonochromeIcon ? false,
 }:
 
-assert stdenv.isDarwin -> (!enableWlrSupport);
+assert stdenv.hostPlatform.isDarwin -> (!enableWlrSupport);
 
 let
-  stdenv' = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
 in
 
 stdenv'.mkDerivation {
@@ -49,11 +49,11 @@ stdenv'.mkDerivation {
       (lib.cmakeBool "DISABLE_UPDATE_CHECKER" true)
       (lib.cmakeBool "USE_MONOCHROME_ICON" enableMonochromeIcon)
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       (lib.cmakeBool "USE_WAYLAND_CLIPBOARD" true)
       (lib.cmakeBool "USE_WAYLAND_GRIM" enableWlrSupport)
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       (lib.cmakeFeature "Qt5_DIR" "${libsForQt5.qtbase.dev}/lib/cmake/Qt5")
     ];
 
@@ -65,7 +65,7 @@ stdenv'.mkDerivation {
       libsForQt5.wrapQtAppsHook
       makeBinaryWrapper
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       imagemagick
       libicns
     ];
@@ -75,7 +75,7 @@ stdenv'.mkDerivation {
     libsForQt5.kguiaddons
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Fix icns generation running concurrently with png generation
     sed -E -i '/"iconutil -o/i\
         )\
@@ -89,7 +89,7 @@ stdenv'.mkDerivation {
         src/CMakeLists.txt
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/Applications
     mv $out/bin/flameshot.app $out/Applications
 
@@ -106,7 +106,7 @@ stdenv'.mkDerivation {
   postFixup =
     let
       binary =
-        if stdenv.isDarwin then "Applications/flameshot.app/Contents/MacOS/flameshot" else "bin/flameshot";
+        if stdenv.hostPlatform.isDarwin then "Applications/flameshot.app/Contents/MacOS/flameshot" else "bin/flameshot";
     in
     ''
       wrapProgram $out/${binary} \
diff --git a/pkgs/by-name/fl/flashgbx/package.nix b/pkgs/by-name/fl/flashgbx/package.nix
index d6cd2eac6075..07af37b5dce2 100644
--- a/pkgs/by-name/fl/flashgbx/package.nix
+++ b/pkgs/by-name/fl/flashgbx/package.nix
@@ -49,7 +49,7 @@ python3Packages.buildPythonApplication rec {
     requests
     setuptools
     qt6.qtbase
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qt6.qtwayland
   ];
 
diff --git a/pkgs/by-name/fl/flashprog/package.nix b/pkgs/by-name/fl/flashprog/package.nix
index b0bb52f1d383..b70a559ac645 100644
--- a/pkgs/by-name/fl/flashprog/package.nix
+++ b/pkgs/by-name/fl/flashprog/package.nix
@@ -9,7 +9,7 @@
 , pkg-config
 , stdenv
 , withJlink ? true
-, withGpio ? stdenv.isLinux
+, withGpio ? stdenv.hostPlatform.isLinux
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -29,7 +29,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     libftdi1
     libusb1
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     pciutils
   ] ++ lib.optionals (withJlink) [
     libjaylink
@@ -46,10 +46,10 @@ stdenv.mkDerivation (finalAttrs: {
       "PREFIX=$(out)"
       "CONFIG_JLINK_SPI=${yesNo withJlink}"
       "CONFIG_LINUX_GPIO_SPI=${yesNo withGpio}"
-      "CONFIG_ENABLE_LIBPCI_PROGRAMMERS=${yesNo (!stdenv.isDarwin)}"
-      "CONFIG_INTERNAL_X86=${yesNo (!(stdenv.isDarwin) && stdenv.isx86_64)}"
-      "CONFIG_INTERNAL_DMI=${yesNo (!(stdenv.isDarwin) && stdenv.isx86_64)}"
-      "CONFIG_RAYER_SPI=${yesNo (!(stdenv.isDarwin) && stdenv.isx86_64)}"
+      "CONFIG_ENABLE_LIBPCI_PROGRAMMERS=${yesNo (!stdenv.hostPlatform.isDarwin)}"
+      "CONFIG_INTERNAL_X86=${yesNo (!(stdenv.hostPlatform.isDarwin) && stdenv.hostPlatform.isx86_64)}"
+      "CONFIG_INTERNAL_DMI=${yesNo (!(stdenv.hostPlatform.isDarwin) && stdenv.hostPlatform.isx86_64)}"
+      "CONFIG_RAYER_SPI=${yesNo (!(stdenv.hostPlatform.isDarwin) && stdenv.hostPlatform.isx86_64)}"
     ];
 
   meta = with lib; {
diff --git a/pkgs/by-name/fl/flatter/package.nix b/pkgs/by-name/fl/flatter/package.nix
index bd8d5605edaa..5ef1b6a01444 100644
--- a/pkgs/by-name/fl/flatter/package.nix
+++ b/pkgs/by-name/fl/flatter/package.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation {
     mpfr
     fplll
     eigen
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     llvmPackages.openmp
   ];
 
diff --git a/pkgs/by-name/fl/flawz/package.nix b/pkgs/by-name/fl/flawz/package.nix
index d149b4108624..fb40c65dc218 100644
--- a/pkgs/by-name/fl/flawz/package.nix
+++ b/pkgs/by-name/fl/flawz/package.nix
@@ -52,6 +52,6 @@ rustPlatform.buildRustPackage rec {
     mainProgram = "flawz";
     maintainers = with lib.maintainers; [ anas ];
     platforms = with lib.platforms; unix ++ windows;
-    broken = stdenv.isDarwin; # needing some apple_sdk packages
+    broken = stdenv.hostPlatform.isDarwin; # needing some apple_sdk packages
   };
 }
diff --git a/pkgs/by-name/fl/flip-link/package.nix b/pkgs/by-name/fl/flip-link/package.nix
index b4ba056ee3b4..f652cb11ccac 100644
--- a/pkgs/by-name/fl/flip-link/package.nix
+++ b/pkgs/by-name/fl/flip-link/package.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-x3JnqztoLol5dNMact/qMveQuvcMTg/jqHxW0lksB7Y=";
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   checkFlags = [
     # requires embedded toolchains
diff --git a/pkgs/by-name/fl/flite/package.nix b/pkgs/by-name/fl/flite/package.nix
index 1edb95c2d4b8..514ded67728a 100644
--- a/pkgs/by-name/fl/flite/package.nix
+++ b/pkgs/by-name/fl/flite/package.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation (finalAttrs: {
     })
   ];
 
-  buildInputs = lib.optional stdenv.isLinux (
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux (
     {
       alsa = alsa-lib;
       pulseaudio = libpulseaudio;
@@ -51,7 +51,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   configureFlags = [
     "--enable-shared"
-  ] ++ lib.optionals stdenv.isLinux [ "--with-audio=${audioBackend}" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ "--with-audio=${audioBackend}" ];
 
   # main/Makefile creates and removes 'flite_voice_list.c' from multiple targets:
   # make[1]: *** No rule to make target 'flite_voice_list.c', needed by 'all'.  Stop
diff --git a/pkgs/by-name/fl/fluent-bit/package.nix b/pkgs/by-name/fl/fluent-bit/package.nix
index dbbb41852524..8f3839130828 100644
--- a/pkgs/by-name/fl/fluent-bit/package.nix
+++ b/pkgs/by-name/fl/fluent-bit/package.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   # optional only to avoid linux rebuild
-  patches = lib.optionals stdenv.isDarwin [ ./macos-11-sdk-compat.patch ];
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [ ./macos-11-sdk-compat.patch ];
 
   nativeBuildInputs = [
     cmake
@@ -38,8 +38,8 @@ stdenv.mkDerivation (finalAttrs: {
       libyaml
       postgresql
     ]
-    ++ lib.optionals stdenv.isLinux [ systemd ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ systemd ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk_11_0.frameworks.IOKit
       darwin.apple_sdk_11_0.frameworks.Foundation
     ];
@@ -49,11 +49,11 @@ stdenv.mkDerivation (finalAttrs: {
     "-DFLB_METRICS=ON"
     "-DFLB_HTTP_SERVER=ON"
     "-DFLB_OUT_PGSQL=ON"
-  ] ++ lib.optionals stdenv.isDarwin [ "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.13" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.13" ];
 
   env.NIX_CFLAGS_COMPILE = toString (
     # Used by the embedded luajit, but is not predefined on older mac SDKs.
-    lib.optionals stdenv.isDarwin [ "-DTARGET_OS_IPHONE=0" ]
+    lib.optionals stdenv.hostPlatform.isDarwin [ "-DTARGET_OS_IPHONE=0" ]
     # Assumes GNU version of strerror_r, and the posix version has an
     # incompatible return type.
     ++ lib.optionals (!stdenv.hostPlatform.isGnu) [ "-Wno-int-conversion" ]
diff --git a/pkgs/by-name/fo/forgejo-cli/package.nix b/pkgs/by-name/fo/forgejo-cli/package.nix
index c8965fa3beea..ee49edd29110 100644
--- a/pkgs/by-name/fo/forgejo-cli/package.nix
+++ b/pkgs/by-name/fo/forgejo-cli/package.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage {
       openssl
       zlib
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         Security
diff --git a/pkgs/by-name/fo/forgejo/generic.nix b/pkgs/by-name/fo/forgejo/generic.nix
index a2a1e51850bc..8ca9a12e96ac 100644
--- a/pkgs/by-name/fo/forgejo/generic.nix
+++ b/pkgs/by-name/fo/forgejo/generic.nix
@@ -158,7 +158,7 @@ buildGoModule rec {
     changelog = "https://codeberg.org/forgejo/forgejo/releases/tag/${src.rev}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ emilylange urandom bendlas adamcstephens ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "gitea";
   };
 }
diff --git a/pkgs/by-name/fo/formatjson5/package.nix b/pkgs/by-name/fo/formatjson5/package.nix
index 852b4096254c..112f94aa8358 100644
--- a/pkgs/by-name/fo/formatjson5/package.nix
+++ b/pkgs/by-name/fo/formatjson5/package.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-zPgaZPDyNVPmBXz6QwOYnmh/sbJ8aPST8znLMfIWejk=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   cargoBuildFlags = [ "--example formatjson5" ];
 
diff --git a/pkgs/by-name/fo/fortune-kind/package.nix b/pkgs/by-name/fo/fortune-kind/package.nix
index 1fd3783735d8..bea0bec5c403 100644
--- a/pkgs/by-name/fo/fortune-kind/package.nix
+++ b/pkgs/by-name/fo/fortune-kind/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-hxbvsAQsZWUAgj8QAlcxqBA5YagLO3/vz9lQGJMHUjw=";
 
   nativeBuildInputs = [ makeBinaryWrapper installShellFiles ];
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
 
   buildNoDefaultFeatures = true;
 
diff --git a/pkgs/by-name/fr/frankenphp/package.nix b/pkgs/by-name/fr/frankenphp/package.nix
index da6d32c5c7b8..9cae030df839 100644
--- a/pkgs/by-name/fr/frankenphp/package.nix
+++ b/pkgs/by-name/fr/frankenphp/package.nix
@@ -19,9 +19,9 @@ let
   phpEmbedWithZts = php.override {
     embedSupport = true;
     ztsSupport = true;
-    staticSupport = stdenv.isDarwin;
+    staticSupport = stdenv.hostPlatform.isDarwin;
     zendSignalsSupport = false;
-    zendMaxExecutionTimersSupport = stdenv.isLinux;
+    zendMaxExecutionTimersSupport = stdenv.hostPlatform.isLinux;
   };
   phpUnwrapped = phpEmbedWithZts.unwrapped;
   phpConfig = "${phpUnwrapped.dev}/bin/php-config";
@@ -45,7 +45,7 @@ in buildGoModule rec {
   vendorHash = "sha256-U2B0ok6TgqUPMwlnkzpPkJLG22S3VpoU80bWwZAeaJo=";
 
   buildInputs = [ phpUnwrapped brotli ] ++ phpUnwrapped.buildInputs;
-  nativeBuildInputs = [ makeBinaryWrapper ] ++ lib.optionals stdenv.isDarwin [ pkg-config cctools darwin.autoSignDarwinBinariesHook ];
+  nativeBuildInputs = [ makeBinaryWrapper ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ pkg-config cctools darwin.autoSignDarwinBinariesHook ];
 
   subPackages = [ "frankenphp" ];
 
@@ -63,7 +63,7 @@ in buildGoModule rec {
     export CGO_LDFLAGS="-DFRANKENPHP_VERSION=${version} \
       $(${phpConfig} --ldflags) \
       $(${phpConfig} --libs)"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # replace hard-code homebrew path
     substituteInPlace ../frankenphp.go \
       --replace "-L/opt/homebrew/opt/libiconv/lib" "-L${libiconv}/lib"
diff --git a/pkgs/by-name/fr/freecad/package.nix b/pkgs/by-name/fr/freecad/package.nix
index f272988ee555..fda823b66744 100644
--- a/pkgs/by-name/fr/freecad/package.nix
+++ b/pkgs/by-name/fr/freecad/package.nix
@@ -23,7 +23,7 @@
 , pkg-config
 , python311Packages
 , runCommand  # for passthru.tests
-, spaceNavSupport ? stdenv.isLinux
+, spaceNavSupport ? stdenv.hostPlatform.isLinux
 , stdenv
 , swig
 , vtk
diff --git a/pkgs/by-name/fr/fretboard/package.nix b/pkgs/by-name/fr/fretboard/package.nix
index 6cc8b189e765..57d8de7846e1 100644
--- a/pkgs/by-name/fr/fretboard/package.nix
+++ b/pkgs/by-name/fr/fretboard/package.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation (finalAttrs: {
     glib
     gtk4
     libadwaita
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
@@ -65,6 +65,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "fretboard";
     maintainers = with maintainers; [ michaelgrahamevans ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/ft/ftgl/package.nix b/pkgs/by-name/ft/ftgl/package.nix
index d1fb07167e13..ee2a3e2457bf 100644
--- a/pkgs/by-name/ft/ftgl/package.nix
+++ b/pkgs/by-name/ft/ftgl/package.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
   ];
   buildInputs = [
     freetype
-  ] ++ (if stdenv.isDarwin then [
+  ] ++ (if stdenv.hostPlatform.isDarwin then [
     OpenGL
     GLUT
   ] else [
diff --git a/pkgs/by-name/fu/furmark/package.nix b/pkgs/by-name/fu/furmark/package.nix
index c3e84546f826..adc2f9dc66d4 100644
--- a/pkgs/by-name/fu/furmark/package.nix
+++ b/pkgs/by-name/fu/furmark/package.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     libGL
     libGLU
-  ] ++ lib.optionals stdenv.isAarch64 [ libxcrypt-legacy ];
+  ] ++ lib.optionals stdenv.hostPlatform.isAarch64 [ libxcrypt-legacy ];
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/by-name/fw/fwupd/package.nix b/pkgs/by-name/fw/fwupd/package.nix
index f366b9290a96..c38eb75de8cc 100644
--- a/pkgs/by-name/fw/fwupd/package.nix
+++ b/pkgs/by-name/fw/fwupd/package.nix
@@ -67,7 +67,7 @@ let
   haveDell = isx86;
 
   # only redfish for x86_64
-  haveRedfish = stdenv.isx86_64;
+  haveRedfish = stdenv.hostPlatform.isx86_64;
 
   # only use msr if x86 (requires cpuid)
   haveMSR = isx86;
diff --git a/pkgs/by-name/fy/fyne/package.nix b/pkgs/by-name/fy/fyne/package.nix
index a2e2e3826543..fafe2a36a3be 100644
--- a/pkgs/by-name/fy/fyne/package.nix
+++ b/pkgs/by-name/fy/fyne/package.nix
@@ -40,7 +40,7 @@ buildGoModule rec {
       libXrandr
       libXxf86vm
     ]
-    ++ (lib.optionals stdenv.isDarwin (
+    ++ (lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk_11_0.frameworks;
       [
         Carbon
diff --git a/pkgs/by-name/ga/gambit-project/package.nix b/pkgs/by-name/ga/gambit-project/package.nix
index 630549a59caa..1c254e025190 100644
--- a/pkgs/by-name/ga/gambit-project/package.nix
+++ b/pkgs/by-name/ga/gambit-project/package.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs =
     lib.optional withGui wxGTK31
-    ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Cocoa;
+    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Cocoa;
 
   strictDeps = true;
 
diff --git a/pkgs/by-name/ga/gavin-bc/package.nix b/pkgs/by-name/ga/gavin-bc/package.nix
index ad8364d41ce4..58c9ce61033d 100644
--- a/pkgs/by-name/ga/gavin-bc/package.nix
+++ b/pkgs/by-name/ga/gavin-bc/package.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation (finalAttrs: {
     license = lib.licenses.bsd2;
     maintainers = [ lib.maintainers.AndersonTorres ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
 # TODO: cover most of configure settings
diff --git a/pkgs/by-name/gc/gcs/package.nix b/pkgs/by-name/gc/gcs/package.nix
index 954128a40ba1..53fe4896f3b4 100644
--- a/pkgs/by-name/gc/gcs/package.nix
+++ b/pkgs/by-name/gc/gcs/package.nix
@@ -71,7 +71,7 @@ buildGoModule rec {
       fontconfig
       freetype
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk_11_0.frameworks.Carbon
       darwin.apple_sdk_11_0.frameworks.Cocoa
       darwin.apple_sdk_11_0.frameworks.Kernel
@@ -100,6 +100,6 @@ buildGoModule rec {
     maintainers = with lib.maintainers; [ tomasajt ];
     platforms = lib.platforms.linux ++ lib.platforms.darwin;
     # incompatible vendor/github.com/richardwilkes/unison/internal/skia/libskia_linux.a
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/by-name/gd/gdlv/package.nix b/pkgs/by-name/gd/gdlv/package.nix
index 27628ae34d6b..59423a71ee5a 100644
--- a/pkgs/by-name/gd/gdlv/package.nix
+++ b/pkgs/by-name/gd/gdlv/package.nix
@@ -23,12 +23,12 @@ buildGoModule rec {
   subPackages = ".";
 
   preBuild =
-    lib.optionalString (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11.0")
+    lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11.0")
       ''
         export MACOSX_DEPLOYMENT_TARGET=10.15
       '';
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     CoreGraphics
     Foundation
diff --git a/pkgs/by-name/ge/gen-license/package.nix b/pkgs/by-name/ge/gen-license/package.nix
index fc6200797d86..a69b44d78473 100644
--- a/pkgs/by-name/ge/gen-license/package.nix
+++ b/pkgs/by-name/ge/gen-license/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-TEsWACxEs4eJ8rO4RnKJWpwT1KcDoBEGftHSJt4YXVw=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/ge/geoserver/package.nix b/pkgs/by-name/ge/geoserver/package.nix
index ed1c82f80643..76a68eea8c3a 100644
--- a/pkgs/by-name/ge/geoserver/package.nix
+++ b/pkgs/by-name/ge/geoserver/package.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation (finalAttrs: rec {
   installPhase =
     let
       inputs = finalAttrs.buildInputs or [ ];
-      ldLibraryPathEnvName = if stdenv.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
+      ldLibraryPathEnvName = if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
     in
     ''
       runHook preInstall
diff --git a/pkgs/by-name/ge/gepetto-viewer/package.nix b/pkgs/by-name/ge/gepetto-viewer/package.nix
index 3ea4da20ece0..da5429416d60 100644
--- a/pkgs/by-name/ge/gepetto-viewer/package.nix
+++ b/pkgs/by-name/ge/gepetto-viewer/package.nix
@@ -44,8 +44,8 @@ let
     ];
 
     cmakeFlags = [
-      (lib.cmakeBool "BUILD_PY_QCUSTOM_PLOT" (!stdenv.isDarwin))
-      (lib.cmakeBool "BUILD_PY_QGV" (!stdenv.isDarwin))
+      (lib.cmakeBool "BUILD_PY_QCUSTOM_PLOT" (!stdenv.hostPlatform.isDarwin))
+      (lib.cmakeBool "BUILD_PY_QGV" (!stdenv.hostPlatform.isDarwin))
     ];
 
     outputs = [
@@ -67,7 +67,7 @@ let
       libsForQt5.wrapQtAppsHook
       pkg-config
       python3Packages.python
-    ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ darwin.autoSignDarwinBinariesHook ];
+    ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ darwin.autoSignDarwinBinariesHook ];
 
     propagatedBuildInputs = [
       jrl-cmakemodules
@@ -80,7 +80,7 @@ let
 
     # wrapQtAppsHook uses isMachO, which fails to detect binaries without this
     # ref. https://github.com/NixOS/nixpkgs/pull/138334
-    preFixup = lib.optionalString stdenv.isDarwin "export LC_ALL=C";
+    preFixup = lib.optionalString stdenv.hostPlatform.isDarwin "export LC_ALL=C";
 
     postFixup = ''
       # CMake is not aware exports are in $dev
diff --git a/pkgs/by-name/ge/gex/package.nix b/pkgs/by-name/ge/gex/package.nix
index 2b404b98f44b..b23169f058e2 100644
--- a/pkgs/by-name/ge/gex/package.nix
+++ b/pkgs/by-name/ge/gex/package.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
     [
       libgit2
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
     ];
 
diff --git a/pkgs/by-name/gf/gfal2/package.nix b/pkgs/by-name/gf/gfal2/package.nix
index 3b3debaf7fef..205f6e192bc4 100644
--- a/pkgs/by-name/gf/gfal2/package.nix
+++ b/pkgs/by-name/gf/gfal2/package.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation (finalAttrs: {
     lfc = false;
     # Break because of redundant `-luuid`. This needs to be fixed from the gfal2 upstream.
     # TODO: Change back to `true` once fixed.
-    mock = !stdenv.isDarwin;
+    mock = !stdenv.hostPlatform.isDarwin;
     rfio = false;
     sftp = true;
     srm = false;
diff --git a/pkgs/by-name/gh/ghciwatch/package.nix b/pkgs/by-name/gh/ghciwatch/package.nix
index b505e405e173..db5353c92653 100644
--- a/pkgs/by-name/gh/ghciwatch/package.nix
+++ b/pkgs/by-name/gh/ghciwatch/package.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-bE2cNgmq1TxtEDmLuyJVJpaj0Gbt73fnD1j/X42OL/w=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.CoreServices
   ];
diff --git a/pkgs/by-name/gh/ghex/package.nix b/pkgs/by-name/gh/ghex/package.nix
index 0d81d0ba969f..a0de4d0c65b0 100644
--- a/pkgs/by-name/gh/ghex/package.nix
+++ b/pkgs/by-name/gh/ghex/package.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation rec {
   mesonFlags = [
     "-Dgtk_doc=true"
     "-Dvapi=true"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # mremap does not exist on darwin
     "-Dmmap-buffer-backend=false"
   ];
diff --git a/pkgs/by-name/gi/girouette/package.nix b/pkgs/by-name/gi/girouette/package.nix
index 2c2a733c3117..09b0d61fccc9 100644
--- a/pkgs/by-name/gi/girouette/package.nix
+++ b/pkgs/by-name/gi/girouette/package.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     dbus
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/gi/git-agecrypt/package.nix b/pkgs/by-name/gi/git-agecrypt/package.nix
index a9c2d85ff63c..bdd9beba175d 100644
--- a/pkgs/by-name/gi/git-agecrypt/package.nix
+++ b/pkgs/by-name/gi/git-agecrypt/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage {
   nativeBuildInputs = [ pkg-config git ];
 
   buildInputs = [ libgit2 zlib ]
-    ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
+    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
 
 
   meta = with lib; {
diff --git a/pkgs/by-name/gi/git-gr/package.nix b/pkgs/by-name/gi/git-gr/package.nix
index 96a03ed49e94..a50d389c04d0 100644
--- a/pkgs/by-name/gi/git-gr/package.nix
+++ b/pkgs/by-name/gi/git-gr/package.nix
@@ -35,11 +35,11 @@ rustPlatform.buildRustPackage {
 
   nativeBuildInputs =
     [installShellFiles]
-    ++ lib.optional stdenv.isLinux pkg-config;
+    ++ lib.optional stdenv.hostPlatform.isLinux pkg-config;
 
   buildInputs =
-    lib.optional stdenv.isLinux openssl
-    ++ lib.optionals stdenv.isDarwin [
+    lib.optional stdenv.hostPlatform.isLinux openssl
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       darwin.apple_sdk.frameworks.CoreServices
       darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/gi/git-igitt/package.nix b/pkgs/by-name/gi/git-igitt/package.nix
index a8c281991686..65ee35a5e763 100644
--- a/pkgs/by-name/gi/git-igitt/package.nix
+++ b/pkgs/by-name/gi/git-igitt/package.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage {
     libgit2
     oniguruma
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   env = {
     RUSTONIG_SYSTEM_LIBONIG = true;
diff --git a/pkgs/by-name/gi/git-instafix/package.nix b/pkgs/by-name/gi/git-instafix/package.nix
index d05e9fab8726..18ab6f5fa0bd 100644
--- a/pkgs/by-name/gi/git-instafix/package.nix
+++ b/pkgs/by-name/gi/git-instafix/package.nix
@@ -37,6 +37,6 @@ rustPlatform.buildRustPackage {
     license = with licenses; [ mit asl20 ];
     maintainers = with maintainers; [ mightyiam quodlibetor ];
     changelog = "https://github.com/quodlibetor/git-instafix/releases/tag/v${version}";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/gi/git-together/package.nix b/pkgs/by-name/gi/git-together/package.nix
index e71668a83a73..44ae1249a59c 100644
--- a/pkgs/by-name/gi/git-together/package.nix
+++ b/pkgs/by-name/gi/git-together/package.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ openssl ] ++ lib.optional stdenv.isDarwin darwin.Security;
+  buildInputs = [ openssl ] ++ lib.optional stdenv.hostPlatform.isDarwin darwin.Security;
 
   OPENSSL_NO_VENDOR = true;
 
diff --git a/pkgs/by-name/gi/gitbutler/package.nix b/pkgs/by-name/gi/gitbutler/package.nix
index 66da05851dde..21fe0bb3096b 100644
--- a/pkgs/by-name/gi/gitbutler/package.nix
+++ b/pkgs/by-name/gi/gitbutler/package.nix
@@ -67,12 +67,12 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       glib-networking
       libsoup
       webkitgtk
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         AppKit
@@ -144,13 +144,13 @@ rustPlatform.buildRustPackage rec {
     ''
       runHook preInstall
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/bin
       cp -r target/release/bundle/macos $out/Applications
       mv $out/Applications/GitButler.app/Contents/MacOS/GitButler $out/bin/git-butler
       ln -s $out/bin/git-butler $out/Applications/GitButler.app/Contents/MacOS/GitButler
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       cp -r target/release/bundle/"$tauriBundle"/*/data/usr $out
 
       desktop-file-edit \
diff --git a/pkgs/by-name/gi/github-runner/package.nix b/pkgs/by-name/gi/github-runner/package.nix
index 535aaeed42cf..a2923b66b3b9 100644
--- a/pkgs/by-name/gi/github-runner/package.nix
+++ b/pkgs/by-name/gi/github-runner/package.nix
@@ -113,7 +113,7 @@ buildDotnetModule rec {
   nativeBuildInputs = [
     which
     git
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     darwin.autoSignDarwinBinariesHook
   ];
 
@@ -230,7 +230,7 @@ buildDotnetModule rec {
 
     substituteInPlace $out/lib/github-runner/config.sh \
       --replace './bin/Runner.Listener' "$out/bin/Runner.Listener"
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace $out/lib/github-runner/config.sh \
       --replace 'command -v ldd' 'command -v ${glibc.bin}/bin/ldd' \
       --replace 'ldd ./bin' '${glibc.bin}/bin/ldd ${dotnet-runtime}/shared/Microsoft.NETCore.App/${dotnet-runtime.version}/' \
@@ -256,7 +256,7 @@ buildDotnetModule rec {
     install -D src/Misc/layoutbin/hashFiles/index.js $out/lib/github-runner/hashFiles/index.js
     mkdir -p $out/lib/github-runner/checkScripts
     install src/Misc/layoutbin/checkScripts/* $out/lib/github-runner/checkScripts/
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     # Wrap explicitly to, e.g., prevent extra entries for LD_LIBRARY_PATH
     makeWrapperArgs=()
 
diff --git a/pkgs/by-name/gi/gitlab-ci-ls/package.nix b/pkgs/by-name/gi/gitlab-ci-ls/package.nix
index 7468842c6468..55bfc010ea92 100644
--- a/pkgs/by-name/gi/gitlab-ci-ls/package.nix
+++ b/pkgs/by-name/gi/gitlab-ci-ls/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.SystemConfiguration
     ];
 
diff --git a/pkgs/by-name/gi/gitlab-release-cli/package.nix b/pkgs/by-name/gi/gitlab-release-cli/package.nix
index 64f1f24e744b..28119445dc2b 100644
--- a/pkgs/by-name/gi/gitlab-release-cli/package.nix
+++ b/pkgs/by-name/gi/gitlab-release-cli/package.nix
@@ -18,7 +18,7 @@ buildGoModule rec {
 
   vendorHash = "sha256-UwDMRsWbk8rEv2d5FssIzCLby68YZULoxd3/JGLsCQU=";
 
-  checkFlags = lib.optionals stdenv.isDarwin [
+  checkFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     # Skip failing test
     "-skip TestHTTPSCustomCA"
   ];
diff --git a/pkgs/by-name/gi/gitlab-timelogs/package.nix b/pkgs/by-name/gi/gitlab-timelogs/package.nix
index 23c03763e314..c0dc2a2a6153 100644
--- a/pkgs/by-name/gi/gitlab-timelogs/package.nix
+++ b/pkgs/by-name/gi/gitlab-timelogs/package.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.SystemConfiguration
       iconv
     ];
diff --git a/pkgs/by-name/gi/gitu/package.nix b/pkgs/by-name/gi/gitu/package.nix
index eda3c91c59cb..33eb8d0c9bea 100644
--- a/pkgs/by-name/gi/gitu/package.nix
+++ b/pkgs/by-name/gi/gitu/package.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
     libgit2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/by-name/gi/gitui/package.nix b/pkgs/by-name/gi/gitui/package.nix
index a93cad786827..df3adcb0e39f 100644
--- a/pkgs/by-name/gi/gitui/package.nix
+++ b/pkgs/by-name/gi/gitui/package.nix
@@ -25,8 +25,8 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optional stdenv.isLinux xclip
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optional stdenv.hostPlatform.isLinux xclip
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
          libiconv
          darwin.apple_sdk.frameworks.Security
          darwin.apple_sdk.frameworks.AppKit
diff --git a/pkgs/by-name/gl/glfw3/package.nix b/pkgs/by-name/gl/glfw3/package.nix
index 3d5050a8d46d..a5a7b33a0a95 100644
--- a/pkgs/by-name/gl/glfw3/package.nix
+++ b/pkgs/by-name/gl/glfw3/package.nix
@@ -29,12 +29,12 @@ stdenv.mkDerivation {
   propagatedBuildInputs = lib.optionals (!stdenv.hostPlatform.isWindows) [ libGL ];
 
   nativeBuildInputs = [ cmake extra-cmake-modules ]
-    ++ lib.optionals stdenv.isDarwin [ fixDarwinDylibNames ]
-    ++ lib.optionals stdenv.isLinux [ wayland-scanner ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ fixDarwinDylibNames ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ wayland-scanner ];
 
   buildInputs =
-    lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Carbon Cocoa Kernel ])
-    ++ lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Carbon Cocoa Kernel ])
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       wayland
       wayland-protocols
       libxkbcommon
@@ -48,12 +48,12 @@ stdenv.mkDerivation {
 
   cmakeFlags = [
     "-DBUILD_SHARED_LIBS=ON"
-  ] ++ lib.optionals (!stdenv.isDarwin && !stdenv.hostPlatform.isWindows) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isWindows) [
     "-DCMAKE_C_FLAGS=-D_GLFW_GLX_LIBRARY='\"${lib.getLib libGL}/lib/libGL.so.1\"'"
     "-DCMAKE_C_FLAGS=-D_GLFW_EGL_LIBRARY='\"${lib.getLib libGL}/lib/libEGL.so.1\"'"
   ];
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace src/wl_init.c \
       --replace-fail "libxkbcommon.so.0" "${lib.getLib libxkbcommon}/lib/libxkbcommon.so.0" \
       --replace-fail "libdecor-0.so.0" "${lib.getLib libdecor}/lib/libdecor-0.so.0" \
@@ -63,7 +63,7 @@ stdenv.mkDerivation {
   '';
 
   # glfw may dlopen libwayland-client.so:
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf ''${!outputLib}/lib/libglfw.so --add-rpath ${lib.getLib wayland}/lib
   '';
 
diff --git a/pkgs/by-name/gl/glrnvim/package.nix b/pkgs/by-name/gl/glrnvim/package.nix
index 92a606699e3c..af11d0a66665 100644
--- a/pkgs/by-name/gl/glrnvim/package.nix
+++ b/pkgs/by-name/gl/glrnvim/package.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-cHEse+pXwgPTL8GJyY4s1mhWXGTY8Fnn2rFpA5SNerY=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     DiskArbitration
     Foundation
   ]);
diff --git a/pkgs/by-name/gm/gmetronome/package.nix b/pkgs/by-name/gm/gmetronome/package.nix
index ff501861b895..7dcd816c31b4 100644
--- a/pkgs/by-name/gm/gmetronome/package.nix
+++ b/pkgs/by-name/gm/gmetronome/package.nix
@@ -39,6 +39,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     maintainers = with maintainers; [ aleksana ];
     mainProgram = "gmetronome";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/gm/gmic/package.nix b/pkgs/by-name/gm/gmic/package.nix
index 602f9cc80294..71402ab7e89a 100644
--- a/pkgs/by-name/gm/gmic/package.nix
+++ b/pkgs/by-name/gm/gmic/package.nix
@@ -73,7 +73,7 @@ stdenv.mkDerivation (finalAttrs: {
   postPatch = ''
     cp -r ${finalAttrs.gmic_stdlib} src/gmic_stdlib_community.h
   ''
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace CMakeLists.txt \
       --replace "LD_LIBRARY_PATH" "DYLD_LIBRARY_PATH"
   '';
diff --git a/pkgs/by-name/gn/gnome-maps/package.nix b/pkgs/by-name/gn/gnome-maps/package.nix
index 85515a19ad70..789e0c4d9bc0 100644
--- a/pkgs/by-name/gn/gnome-maps/package.nix
+++ b/pkgs/by-name/gn/gnome-maps/package.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-lAtBuXQLCBMyXjkWdYcWz4+g7k4MkZHyYM7AbZITWDU=";
   };
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   nativeBuildInputs = [
     gettext
diff --git a/pkgs/by-name/gn/gnucap/package.nix b/pkgs/by-name/gn/gnucap/package.nix
index d67fc5d2c74b..2713a2283de6 100644
--- a/pkgs/by-name/gn/gnucap/package.nix
+++ b/pkgs/by-name/gn/gnucap/package.nix
@@ -20,7 +20,7 @@ It performs nonlinear dc and transient analyses, fourier analysis, and ac analys
     changelog = "https://git.savannah.gnu.org/cgit/gnucap.git/plain/NEWS?h=v${version}";
     license = licenses.gpl3Plus;
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # Relies on LD_LIBRARY_PATH
+    broken = stdenv.hostPlatform.isDarwin; # Relies on LD_LIBRARY_PATH
     maintainers = [ maintainers.raboof ];
     mainProgram = "gnucap";
   };
diff --git a/pkgs/by-name/gn/gnucobol/package.nix b/pkgs/by-name/gn/gnucobol/package.nix
index 7c698954e5ab..75341f91bbb9 100644
--- a/pkgs/by-name/gn/gnucobol/package.nix
+++ b/pkgs/by-name/gn/gnucobol/package.nix
@@ -79,7 +79,7 @@ stdenv.mkDerivation (finalAttrs: {
       aclocal
       automake
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # when building with nix on darwin, configure will use GNU strip,
       # which fails due to using --strip-unneeded, which is not supported
       substituteInPlace configure --replace-fail '"GNU strip"' 'FAKE GNU strip'
@@ -87,7 +87,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # error: call to undeclared function 'xmlCleanupParser'
   # ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
-  env.CFLAGS = lib.optionalString stdenv.isDarwin "-Wno-error=implicit-function-declaration";
+  env.CFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-error=implicit-function-declaration";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/by-name/go/go-ethereum/package.nix b/pkgs/by-name/go/go-ethereum/package.nix
index 4b15286f7fa9..05e8768bded8 100644
--- a/pkgs/by-name/go/go-ethereum/package.nix
+++ b/pkgs/by-name/go/go-ethereum/package.nix
@@ -50,7 +50,7 @@ in buildGoModule rec {
 
   # Fix for usb-related segmentation faults on darwin
   propagatedBuildInputs =
-    lib.optionals stdenv.isDarwin [ libobjc IOKit ];
+    lib.optionals stdenv.hostPlatform.isDarwin [ libobjc IOKit ];
 
   passthru.tests = { inherit (nixosTests) geth; };
 
diff --git a/pkgs/by-name/go/gobang/package.nix b/pkgs/by-name/go/gobang/package.nix
index 2889747b0738..aaefff5aa3b8 100644
--- a/pkgs/by-name/go/gobang/package.nix
+++ b/pkgs/by-name/go/gobang/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs =
     with darwin.apple_sdk.frameworks;
-    lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isDarwin [
       CoreFoundation
       Security
       SystemConfiguration
diff --git a/pkgs/by-name/go/goofcord/package.nix b/pkgs/by-name/go/goofcord/package.nix
index d3830c39b360..39249fbde729 100644
--- a/pkgs/by-name/go/goofcord/package.nix
+++ b/pkgs/by-name/go/goofcord/package.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
     copyDesktopItems
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     libpulseaudio
     pipewire
     stdenv.cc.cc.lib
diff --git a/pkgs/by-name/go/google-chrome/package.nix b/pkgs/by-name/go/google-chrome/package.nix
index d5c54c6400b5..4698f9c9a416 100644
--- a/pkgs/by-name/go/google-chrome/package.nix
+++ b/pkgs/by-name/go/google-chrome/package.nix
@@ -309,4 +309,4 @@ let
     mainProgram = "google-chrome-stable";
   };
 in
-if stdenvNoCC.isDarwin then darwin else linux
+if stdenvNoCC.hostPlatform.isDarwin then darwin else linux
diff --git a/pkgs/by-name/go/goss/package.nix b/pkgs/by-name/go/goss/package.nix
index 3f3a7fcebc02..0b618c195d5a 100644
--- a/pkgs/by-name/go/goss/package.nix
+++ b/pkgs/by-name/go/goss/package.nix
@@ -37,7 +37,7 @@ buildGoModule rec {
 
   postInstall = let
     runtimeDependencies = [ bash getent ]
-      ++ lib.optionals stdenv.isLinux [ systemd ];
+      ++ lib.optionals stdenv.hostPlatform.isLinux [ systemd ];
   in ''
     wrapProgram $out/bin/goss \
       --prefix PATH : "${lib.makeBinPath runtimeDependencies}"
diff --git a/pkgs/by-name/go/gossip/package.nix b/pkgs/by-name/go/gossip/package.nix
index f6c4927316d9..518539351cd0 100644
--- a/pkgs/by-name/go/gossip/package.nix
+++ b/pkgs/by-name/go/gossip/package.nix
@@ -61,7 +61,7 @@ rustPlatform.buildRustPackage rec {
       pkg-config
       rustPlatform.bindgenHook
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       wayland-scanner
     ];
 
@@ -73,7 +73,7 @@ rustPlatform.buildRustPackage rec {
       libxkbcommon
       openssl
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.AppKit
       darwin.apple_sdk.frameworks.Cocoa
       darwin.apple_sdk.frameworks.CoreGraphics
@@ -81,7 +81,7 @@ rustPlatform.buildRustPackage rec {
       darwin.apple_sdk.frameworks.ForceFeedback
       darwin.apple_sdk.frameworks.AVFoundation
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       wayland
       xorg.libX11
       xorg.libXcursor
@@ -99,7 +99,7 @@ rustPlatform.buildRustPackage rec {
     ln -s $out/logo/gossip.png $out/share/icons/hicolor/128x128/apps/gossip.png
   '';
 
-  postFixup = lib.optionalString (!stdenv.isDarwin) ''
+  postFixup = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     patchelf $out/bin/gossip \
       --add-rpath ${
         lib.makeLibraryPath [
diff --git a/pkgs/by-name/go/got/package.nix b/pkgs/by-name/go/got/package.nix
index 29931498ccaf..d872cd796042 100644
--- a/pkgs/by-name/go/got/package.nix
+++ b/pkgs/by-name/go/got/package.nix
@@ -21,7 +21,7 @@
 }:
 
 let
-  stdenv' = if stdenv.isDarwin && stdenv.isx86_64
+  stdenv' = if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64
     then overrideSDK stdenv "11.0"
     else stdenv;
 in
@@ -35,12 +35,12 @@ stdenv'.mkDerivation (finalAttrs: {
   };
 
   nativeBuildInputs = [ pkg-config bison ]
-    ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   buildInputs = [ libressl libbsd libevent libuuid libmd zlib ncurses ]
-    ++ lib.optionals stdenv.isDarwin [ libossp_uuid ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libossp_uuid ];
 
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # The configure script assumes dependencies on Darwin are installed via
     # Homebrew or MacPorts and hardcodes assumptions about the paths of
     # dependencies which fails the nixpkgs configurePhase.
@@ -53,12 +53,12 @@ stdenv'.mkDerivation (finalAttrs: {
   ] ++ lib.optionals withSsh [
     ''-DGOT_DIAL_PATH_SSH="${lib.getExe openssh}"''
     ''-DGOT_TAG_PATH_SSH_KEYGEN="${lib.getExe' openssh "ssh-keygen"}"''
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     ''-DGOT_TAG_PATH_SIGNIFY="${lib.getExe signify}"''
   ] ++ lib.optionals stdenv.cc.isClang [
     "-Wno-error=implicit-function-declaration"
     "-Wno-error=int-conversion"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # error: conflicting types for 'strmode'
     "-DHAVE_STRMODE=1"
     # Undefined symbols for architecture arm64: "_bsd_getopt"
diff --git a/pkgs/by-name/gp/gpscorrelate/package.nix b/pkgs/by-name/gp/gpscorrelate/package.nix
index b0e87221f8da..bb72042c21c5 100644
--- a/pkgs/by-name/gp/gpscorrelate/package.nix
+++ b/pkgs/by-name/gp/gpscorrelate/package.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
     libxslt
     pkg-config
     wrapGAppsHook3
-  ] ++ lib.optional stdenv.isDarwin desktopToDarwinBundle;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   buildInputs = [
     exiv2
diff --git a/pkgs/by-name/gp/gptscript/package.nix b/pkgs/by-name/gp/gptscript/package.nix
index 515cb7955370..a034a08aa721 100644
--- a/pkgs/by-name/gp/gptscript/package.nix
+++ b/pkgs/by-name/gp/gptscript/package.nix
@@ -19,7 +19,7 @@ buildGoModule rec {
   vendorHash = "sha256-Kf/ckUuG+SA8WQN2MKL+Xrz91RGPuA7X2/MjryRXsts=";
 
   propagatedBuildInputs = with darwin;
-    lib.optionals stdenv.isDarwin [Security];
+    lib.optionals stdenv.hostPlatform.isDarwin [Security];
 
   ldflags = [
     "-s"
diff --git a/pkgs/by-name/gr/grafana-alloy/package.nix b/pkgs/by-name/gr/grafana-alloy/package.nix
index e9eb1133f1f1..c09e7725b9ce 100644
--- a/pkgs/by-name/gr/grafana-alloy/package.nix
+++ b/pkgs/by-name/gr/grafana-alloy/package.nix
@@ -79,7 +79,7 @@ buildGoModule rec {
 
   # uses go-systemd, which uses libsystemd headers
   # https://github.com/coreos/go-systemd/issues/351
-  NIX_CFLAGS_COMPILE = lib.optionals stdenv.isLinux [ "-I${lib.getDev systemd}/include" ];
+  NIX_CFLAGS_COMPILE = lib.optionals stdenv.hostPlatform.isLinux [ "-I${lib.getDev systemd}/include" ];
 
   checkFlags = [
     "-tags nonetwork" # disable network tests
@@ -89,7 +89,7 @@ buildGoModule rec {
   # go-systemd uses libsystemd under the hood, which does dlopen(libsystemd) at
   # runtime.
   # Add to RUNPATH so it can be found.
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf \
       --set-rpath "${lib.makeLibraryPath [ (lib.getLib systemd) ]}:$(patchelf --print-rpath $out/bin/alloy)" \
       $out/bin/alloy
diff --git a/pkgs/by-name/gu/guile-avahi/package.nix b/pkgs/by-name/gu/guile-avahi/package.nix
index c75d4ee0f079..3a8c9be42998 100644
--- a/pkgs/by-name/gu/guile-avahi/package.nix
+++ b/pkgs/by-name/gu/guile-avahi/package.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
   makeFlags = [ "GUILE_AUTO_COMPILE=0" ];
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-unused-function";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-unused-function";
 
   meta = with lib; {
     description = "Bindings to Avahi for GNU Guile";
diff --git a/pkgs/by-name/gu/guile-chickadee/package.nix b/pkgs/by-name/gu/guile-chickadee/package.nix
index f4a454bf4e45..aa34a0d36df9 100644
--- a/pkgs/by-name/gu/guile-chickadee/package.nix
+++ b/pkgs/by-name/gu/guile-chickadee/package.nix
@@ -66,7 +66,7 @@ stdenv.mkDerivation (finalAttrs: {
     command = "chickadee -v";
   };
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Game development toolkit for Guile Scheme with SDL2 and OpenGL";
@@ -75,6 +75,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with maintainers; [ chito ];
     mainProgram = "chickadee";
     platforms = guile.meta.platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/gu/guile-goblins/package.nix b/pkgs/by-name/gu/guile-goblins/package.nix
index aa5bcbc4bced..4175b9c5d79b 100644
--- a/pkgs/by-name/gu/guile-goblins/package.nix
+++ b/pkgs/by-name/gu/guile-goblins/package.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   makeFlags = [ "GUILE_AUTO_COMPILE=0" ];
 
   # tests hang on darwin, and fail randomly on aarch64-linux on ofborg
-  doCheck = !stdenv.isDarwin && !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isAarch64;
 
   meta = with lib; {
     description = "Spritely Goblins for Guile";
diff --git a/pkgs/by-name/gu/guile-lzlib/package.nix b/pkgs/by-name/gu/guile-lzlib/package.nix
index 21c9c6c53950..a465849470b0 100644
--- a/pkgs/by-name/gu/guile-lzlib/package.nix
+++ b/pkgs/by-name/gu/guile-lzlib/package.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   makeFlags = [ "GUILE_AUTO_COMPILE=0" ];
 
   # tests fail on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "GNU Guile library providing bindings to lzlib";
diff --git a/pkgs/by-name/gu/guile-lzma/package.nix b/pkgs/by-name/gu/guile-lzma/package.nix
index 89a361ef9e4c..9f7b941f068f 100644
--- a/pkgs/by-name/gu/guile-lzma/package.nix
+++ b/pkgs/by-name/gu/guile-lzma/package.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   # In procedure bytevector-u8-ref: Argument 2 out of range
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     homepage = "https://ngyro.com/software/guile-lzma.html";
diff --git a/pkgs/by-name/gu/guile-quickcheck/package.nix b/pkgs/by-name/gu/guile-quickcheck/package.nix
index 0a7a0c836a64..2c3c0f9c4b9b 100644
--- a/pkgs/by-name/gu/guile-quickcheck/package.nix
+++ b/pkgs/by-name/gu/guile-quickcheck/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ guile pkg-config ];
   buildInputs = [ guile ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     homepage = "https://ngyro.com/software/guile-quickcheck.html";
diff --git a/pkgs/by-name/gu/guile-zstd/package.nix b/pkgs/by-name/gu/guile-zstd/package.nix
index 70fea933eabb..2c0f9b8d0425 100644
--- a/pkgs/by-name/gu/guile-zstd/package.nix
+++ b/pkgs/by-name/gu/guile-zstd/package.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   propagatedBuildInputs = [ zstd ];
   makeFlags = [ "GUILE_AUTO_COMPILE=0" ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "GNU Guile library providing bindings to zstd";
diff --git a/pkgs/by-name/ha/halloy/package.nix b/pkgs/by-name/ha/halloy/package.nix
index 3421fbe9f1ea..04af62588db5 100644
--- a/pkgs/by-name/ha/halloy/package.nix
+++ b/pkgs/by-name/ha/halloy/package.nix
@@ -53,7 +53,7 @@ rustPlatform.buildRustPackage rec {
       xorg.libXi
       xorg.libXrandr
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.AppKit
       darwin.apple_sdk.frameworks.CoreFoundation
       darwin.apple_sdk.frameworks.CoreGraphics
@@ -63,7 +63,7 @@ rustPlatform.buildRustPackage rec {
       darwin.apple_sdk.frameworks.QuartzCore
       darwin.apple_sdk.frameworks.Security
     ]
-    ++ lib.optionals stdenv.isLinux [ wayland ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ wayland ];
 
   desktopItems = [
     (makeDesktopItem {
@@ -89,7 +89,7 @@ rustPlatform.buildRustPackage rec {
     })
   ];
 
-  postFixup = lib.optional stdenv.isLinux (
+  postFixup = lib.optional stdenv.hostPlatform.isLinux (
     let
       rpathWayland = lib.makeLibraryPath [
         wayland
@@ -106,7 +106,7 @@ rustPlatform.buildRustPackage rec {
   postInstall = ''
     install -Dm644 assets/linux/icons/hicolor/128x128/apps/org.squidowl.halloy.png \
       $out/share/icons/hicolor/128x128/apps/org.squidowl.halloy.png
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     APP_DIR="$out/Applications/Halloy.app/Contents"
 
     mkdir -p "$APP_DIR/MacOS"
diff --git a/pkgs/by-name/ha/handbrake/package.nix b/pkgs/by-name/ha/handbrake/package.nix
index c24cee4960f9..264520341ece 100644
--- a/pkgs/by-name/ha/handbrake/package.nix
+++ b/pkgs/by-name/ha/handbrake/package.nix
@@ -65,7 +65,7 @@
   # which in turn depends on systemd. systemd is not supported on Darwin, so
   # for now we disable GTK GUI support on Darwin. (It may be possible to remove
   # this restriction later.)
-  useGtk ? !stdenv.isDarwin,
+  useGtk ? !stdenv.hostPlatform.isDarwin,
   appstream,
   desktop-file-utils,
   meson,
@@ -198,7 +198,7 @@ let
             -e '/    ## Additional library and tool checks/,/    ## MinGW specific library and tool checks/d' \
             -i make/configure.py
       ''
-      + optionalString stdenv.isDarwin ''
+      + optionalString stdenv.hostPlatform.isDarwin ''
         # Prevent the configure script from failing if xcodebuild isn't available,
         # which it isn't in the Nix context. (The actual build goes fine without
         # xcodebuild.)
@@ -269,7 +269,7 @@ let
         xz
         zimg
       ]
-      ++ optional (!stdenv.isDarwin) numactl
+      ++ optional (!stdenv.hostPlatform.isDarwin) numactl
       ++ optionals useGtk [
         dbus-glib
         glib
@@ -286,7 +286,7 @@ let
         udev
       ]
       ++ optional useFdk fdk_aac
-      ++ optionals stdenv.isDarwin [
+      ++ optionals stdenv.hostPlatform.isDarwin [
         AudioToolbox
         Foundation
         libobjc
@@ -294,7 +294,7 @@ let
       ]
       # NOTE: 2018-12-27: Handbrake supports nv-codec-headers for Linux only,
       # look at ./make/configure.py search "enable_nvenc"
-      ++ optional stdenv.isLinux nv-codec-headers;
+      ++ optional stdenv.hostPlatform.isLinux nv-codec-headers;
 
     configureFlags =
       [
@@ -303,7 +303,7 @@ let
       ]
       ++ optional (!useGtk) "--disable-gtk"
       ++ optional useFdk "--enable-fdk-aac"
-      ++ optional stdenv.isDarwin "--disable-xcode"
+      ++ optional stdenv.hostPlatform.isDarwin "--disable-xcode"
       ++ optional stdenv.hostPlatform.isx86 "--harden";
 
     # NOTE: 2018-12-27: Check NixOS HandBrake test if changing
@@ -362,7 +362,7 @@ let
       ];
       mainProgram = "HandBrakeCLI";
       platforms = with platforms; unix;
-      broken = stdenv.isDarwin; # https://github.com/NixOS/nixpkgs/pull/297984#issuecomment-2016503434
+      broken = stdenv.hostPlatform.isDarwin; # https://github.com/NixOS/nixpkgs/pull/297984#issuecomment-2016503434
     };
   };
 in
diff --git a/pkgs/by-name/ha/harvid/package.nix b/pkgs/by-name/ha/harvid/package.nix
index 83f1148904ea..efbe45d667c0 100644
--- a/pkgs/by-name/ha/harvid/package.nix
+++ b/pkgs/by-name/ha/harvid/package.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs =
     [ pkg-config ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       which
       unixtools.xxd
     ];
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
     libpng
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace libharvid/Makefile \
       --replace-fail /usr/bin/libtool ${cctools}/bin/libtool
   '';
diff --git a/pkgs/by-name/ha/hatch/package.nix b/pkgs/by-name/ha/hatch/package.nix
index 5ae22d698f21..ef827725267e 100644
--- a/pkgs/by-name/ha/hatch/package.nix
+++ b/pkgs/by-name/ha/hatch/package.nix
@@ -62,7 +62,7 @@ python3Packages.buildPythonApplication rec {
       setuptools
     ]
     ++ [ cargo ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.ps
     ];
 
@@ -100,7 +100,7 @@ python3Packages.buildPythonApplication rec {
       # Could not read ELF interpreter from any of the following paths: /bin/sh, /usr/bin/env, /bin/dash, /bin/ls
       "test_new_selected_python"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # https://github.com/NixOS/nixpkgs/issues/209358
       "test_scripts_no_environment"
 
@@ -114,9 +114,9 @@ python3Packages.buildPythonApplication rec {
       "test_macos_archflags"
       "test_macos_max_compat"
     ]
-    ++ lib.optionals stdenv.isAarch64 [ "test_resolve" ];
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [ "test_resolve" ];
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     # AssertionError: assert [call('test h...2p32/bin/sh')] == [call('test h..., shell=True)]
     # At index 0 diff:
     #    call('test hatch-test.py3.10', shell=True, executable='/nix/store/b34ianga4diikh0kymkpqwmvba0mmzf7-bash-5.2p32/bin/sh')
diff --git a/pkgs/by-name/ha/havoc/package.nix b/pkgs/by-name/ha/havoc/package.nix
index ee5db97c9865..81b8177c4ec8 100644
--- a/pkgs/by-name/ha/havoc/package.nix
+++ b/pkgs/by-name/ha/havoc/package.nix
@@ -51,6 +51,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "havoc";
     maintainers = with lib.maintainers; [ AndersonTorres ];
     inherit (wayland.meta) platforms;
-    broken = stdenv.isDarwin; # fatal error: 'sys/epoll.h' file not found
+    broken = stdenv.hostPlatform.isDarwin; # fatal error: 'sys/epoll.h' file not found
   };
 })
diff --git a/pkgs/by-name/ha/haylxon/package.nix b/pkgs/by-name/ha/haylxon/package.nix
index c4a781d7cde6..5f8f71f4114f 100644
--- a/pkgs/by-name/ha/haylxon/package.nix
+++ b/pkgs/by-name/ha/haylxon/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-6vVsm4gdcFCxKvvmOi3wlHkFoZp8CG+u50NfxIZqCl8=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   meta = {
     description = "Save screenshots of urls and webpages from terminal";
diff --git a/pkgs/by-name/he/hercules/package.nix b/pkgs/by-name/he/hercules/package.nix
index 080d3a849beb..8a7e4a16dbaf 100644
--- a/pkgs/by-name/he/hercules/package.nix
+++ b/pkgs/by-name/he/hercules/package.nix
@@ -6,7 +6,7 @@
 , cmake
 , zlib
 , bzip2
-, enableRexx ? stdenv.isLinux, regina
+, enableRexx ? stdenv.hostPlatform.isLinux, regina
 }:
 let
   herculesCpu =
diff --git a/pkgs/by-name/hi/hieroglyphic/package.nix b/pkgs/by-name/hi/hieroglyphic/package.nix
index 4cb0ebf507e5..71f245d996f4 100644
--- a/pkgs/by-name/hi/hieroglyphic/package.nix
+++ b/pkgs/by-name/hi/hieroglyphic/package.nix
@@ -59,7 +59,7 @@ stdenv.mkDerivation (finalAttrs: {
       gtk4
       libadwaita
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreFoundation
       Foundation
     ];
diff --git a/pkgs/by-name/hi/himalaya/package.nix b/pkgs/by-name/hi/himalaya/package.nix
index 5a271432a0cc..027254e2423a 100644
--- a/pkgs/by-name/hi/himalaya/package.nix
+++ b/pkgs/by-name/hi/himalaya/package.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-YS8IamapvmdrOPptQh2Ef9Yold0IK1XIeGs0kDIQ5b8=";
 
-  NIX_LDFLAGS = lib.optionals stdenv.isDarwin [
+  NIX_LDFLAGS = lib.optionals stdenv.hostPlatform.isDarwin [
     "-F${darwin.apple_sdk.frameworks.AppKit}/Library/Frameworks"
     "-framework"
     "AppKit"
@@ -41,7 +41,7 @@ rustPlatform.buildRustPackage rec {
     ++ lib.optional (installManPages || installShellCompletions) installShellFiles;
 
   buildInputs = [ ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ AppKit Cocoa Security ])
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ AppKit Cocoa Security ])
     ++ lib.optional (builtins.elem "notmuch" buildFeatures) notmuch
     ++ lib.optional (builtins.elem "pgp-gpg" buildFeatures) gpgme;
 
diff --git a/pkgs/by-name/ho/hoppscotch/package.nix b/pkgs/by-name/ho/hoppscotch/package.nix
index 5fd0dfe9e150..1484afa5a55e 100644
--- a/pkgs/by-name/ho/hoppscotch/package.nix
+++ b/pkgs/by-name/ho/hoppscotch/package.nix
@@ -50,7 +50,7 @@ let
     sourceProvenance = [ lib.sourceTypes.binaryNativeCode ];
   };
 in
-if stdenv.isDarwin then
+if stdenv.hostPlatform.isDarwin then
   stdenv.mkDerivation {
     inherit
       pname
diff --git a/pkgs/by-name/hp/hpipm/package.nix b/pkgs/by-name/hp/hpipm/package.nix
index a33efcc43677..88899d752b91 100644
--- a/pkgs/by-name/hp/hpipm/package.nix
+++ b/pkgs/by-name/hp/hpipm/package.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation (finalAttrs: {
   cmakeFlags = [
     "-DHPIPM_FIND_BLASFEO=ON"
     "-DBUILD_SHARED_LIBS=ON"
-  ] ++ lib.optionals (!stdenv.isx86_64) [ "-DTARGET=GENERIC" ];
+  ] ++ lib.optionals (!stdenv.hostPlatform.isx86_64) [ "-DTARGET=GENERIC" ];
 
   meta = {
     description = "High-performance interior-point-method QP and QCQP solvers";
diff --git a/pkgs/by-name/ht/htb-toolkit/package.nix b/pkgs/by-name/ht/htb-toolkit/package.nix
index dbbe025bf661..df3c8cde1275 100644
--- a/pkgs/by-name/ht/htb-toolkit/package.nix
+++ b/pkgs/by-name/ht/htb-toolkit/package.nix
@@ -38,9 +38,9 @@ rustPlatform.buildRustPackage {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     gnome-keyring
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/ht/htcondor/package.nix b/pkgs/by-name/ht/htcondor/package.nix
index c1cf23d22abb..3cb4665f5e48 100644
--- a/pkgs/by-name/ht/htcondor/package.nix
+++ b/pkgs/by-name/ht/htcondor/package.nix
@@ -60,6 +60,6 @@ stdenv.mkDerivation rec {
     license = licenses.asl20;
     maintainers = with maintainers; [ evey ];
     # cannot find -lpthread: No such file or directory
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/by-name/ht/httpdirfs/package.nix b/pkgs/by-name/ht/httpdirfs/package.nix
index 22dbceaf3799..6b6ed108fd45 100644
--- a/pkgs/by-name/ht/httpdirfs/package.nix
+++ b/pkgs/by-name/ht/httpdirfs/package.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-PUYsT0VDEzerPqwrLJrET4kSsWsQhtnfmLepeaqtA+I=";
   };
 
-  postPatch = lib.optional stdenv.isDarwin ''
+  postPatch = lib.optional stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile --replace-fail '-fanalyzer' '-Xanalyzer'
   '';
 
@@ -49,7 +49,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   passthru = {
     # Disabled for Darwin because requires macFUSE installed outside NixOS
-    tests.version = lib.optionalAttrs stdenv.isLinux (
+    tests.version = lib.optionalAttrs stdenv.hostPlatform.isLinux (
       testers.testVersion {
         command = "${lib.getExe finalAttrs.finalPackage} --version";
         package = finalAttrs.finalPackage;
diff --git a/pkgs/by-name/ht/httptoolkit/package.nix b/pkgs/by-name/ht/httptoolkit/package.nix
index 173e093cb71c..3acc04031f88 100644
--- a/pkgs/by-name/ht/httptoolkit/package.nix
+++ b/pkgs/by-name/ht/httptoolkit/package.nix
@@ -29,7 +29,7 @@ buildNpmPackage rec {
     CSC_IDENTITY_AUTO_DISCOVERY = "false";
   };
 
-  nativeBuildInputs = [ makeWrapper ] ++ lib.optionals stdenv.isLinux [ copyDesktopItems ];
+  nativeBuildInputs = [ makeWrapper ] ++ lib.optionals stdenv.hostPlatform.isLinux [ copyDesktopItems ];
 
   npmBuildScript = "build:src";
 
@@ -50,7 +50,7 @@ buildNpmPackage rec {
   installPhase = ''
     runHook preInstall
 
-    ${lib.optionalString stdenv.isLinux ''
+    ${lib.optionalString stdenv.hostPlatform.isLinux ''
       mkdir -p $out/share/httptoolkit
       cp -r dist/*-unpacked/{locales,resources{,.pak}} $out/share/httptoolkit
 
@@ -64,7 +64,7 @@ buildNpmPackage rec {
           --inherit-argv0
     ''}
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/Applications
       cp -r dist/mac*/"HTTP Toolkit.app" $out/Applications
 
diff --git a/pkgs/by-name/hu/hurl/package.nix b/pkgs/by-name/hu/hurl/package.nix
index b758e779705f..db2f1619703d 100644
--- a/pkgs/by-name/hu/hurl/package.nix
+++ b/pkgs/by-name/hu/hurl/package.nix
@@ -41,7 +41,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     libxml2
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     curl
   ];
 
diff --git a/pkgs/by-name/hy/hydra/package.nix b/pkgs/by-name/hy/hydra/package.nix
index 661eb4d0231c..8c88d03c21a1 100644
--- a/pkgs/by-name/hy/hydra/package.nix
+++ b/pkgs/by-name/hy/hydra/package.nix
@@ -173,7 +173,7 @@ stdenv.mkDerivation (finalAttrs: {
       darcs
       gnused
       breezy
-    ] ++ lib.optionals stdenv.isLinux [ rpm dpkg cdrkit ]
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [ rpm dpkg cdrkit ]
   );
 
   nativeBuildInputs = [
diff --git a/pkgs/by-name/im/immersed-vr/package.nix b/pkgs/by-name/im/immersed-vr/package.nix
index f057d192ca97..7bf1f14574d4 100644
--- a/pkgs/by-name/im/immersed-vr/package.nix
+++ b/pkgs/by-name/im/immersed-vr/package.nix
@@ -31,6 +31,6 @@ let
     sourceProvenance = with sourceTypes; [ binaryNativeCode ];
   };
 
-in if stdenv.isDarwin
+in if stdenv.hostPlatform.isDarwin
 then callPackage ./darwin.nix { inherit pname version src meta; }
 else callPackage ./linux.nix { inherit pname version src meta; }
diff --git a/pkgs/by-name/im/implot/demos/default.nix b/pkgs/by-name/im/implot/demos/default.nix
index b3a369668c1d..677448924dee 100644
--- a/pkgs/by-name/im/implot/demos/default.nix
+++ b/pkgs/by-name/im/implot/demos/default.nix
@@ -72,7 +72,7 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/epezent/implot_demos";
     broken =
       stdenv.hostPlatform.isAarch64 # Target "mandel" relies on AVX2
-      || stdenv.isDarwin;
+      || stdenv.hostPlatform.isDarwin;
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ SomeoneSerge ];
     mainProgram = "implot-demos";
diff --git a/pkgs/by-name/in/inshellisense/package.nix b/pkgs/by-name/in/inshellisense/package.nix
index d7a1589ccbcf..3b2a84ace0c5 100644
--- a/pkgs/by-name/in/inshellisense/package.nix
+++ b/pkgs/by-name/in/inshellisense/package.nix
@@ -20,8 +20,8 @@ buildNpmPackage rec {
   # npm ERR!   int ret = openpty(&master, &slave, nullptr, NULL, static_cast<winsi ze*>(&winp));
   #
   # when `node-gyp` tries to build the dep. The below allows `npm` to download the prebuilt binary.
-  makeCacheWritable = stdenv.isDarwin;
-  nativeBuildInputs = lib.optional stdenv.isDarwin cacert;
+  makeCacheWritable = stdenv.hostPlatform.isDarwin;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin cacert;
 
   meta = with lib; {
     description = "IDE style command line auto complete";
diff --git a/pkgs/by-name/in/inv-sig-helper/package.nix b/pkgs/by-name/in/inv-sig-helper/package.nix
index 5070b60abcdd..31f78a23b5f7 100644
--- a/pkgs/by-name/in/inv-sig-helper/package.nix
+++ b/pkgs/by-name/in/inv-sig-helper/package.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
     ];
diff --git a/pkgs/by-name/ip/ipxe/package.nix b/pkgs/by-name/ip/ipxe/package.nix
index c06072a41088..85e3564f3cbb 100644
--- a/pkgs/by-name/ip/ipxe/package.nix
+++ b/pkgs/by-name/ip/ipxe/package.nix
@@ -19,7 +19,7 @@
 let
   targets =
     additionalTargets
-    // lib.optionalAttrs stdenv.isx86_64 {
+    // lib.optionalAttrs stdenv.hostPlatform.isx86_64 {
       "bin-x86_64-efi/ipxe.efi" = null;
       "bin-x86_64-efi/ipxe.efirom" = null;
       "bin-x86_64-efi/ipxe.usb" = "ipxe-efi.usb";
@@ -32,13 +32,13 @@ let
       "bin/ipxe.lkrn" = null;
       "bin/undionly.kpxe" = null;
     }
-    // lib.optionalAttrs stdenv.isAarch32 {
+    // lib.optionalAttrs stdenv.hostPlatform.isAarch32 {
       "bin-arm32-efi/ipxe.efi" = null;
       "bin-arm32-efi/ipxe.efirom" = null;
       "bin-arm32-efi/ipxe.usb" = "ipxe-efi.usb";
       "bin-arm32-efi/snp.efi" = null;
     }
-    // lib.optionalAttrs stdenv.isAarch64 {
+    // lib.optionalAttrs stdenv.hostPlatform.isAarch64 {
       "bin-arm64-efi/ipxe.efi" = null;
       "bin-arm64-efi/ipxe.efirom" = null;
       "bin-arm64-efi/ipxe.usb" = "ipxe-efi.usb";
diff --git a/pkgs/by-name/ir/iredis/package.nix b/pkgs/by-name/ir/iredis/package.nix
index 8a5956e52a69..7521bab9d9a8 100644
--- a/pkgs/by-name/ir/iredis/package.nix
+++ b/pkgs/by-name/ir/iredis/package.nix
@@ -51,7 +51,7 @@ python3.pkgs.buildPythonApplication rec {
     "--deselect=tests/unittests/test_render_functions.py::test_render_time"
     # Only execute unittests, because cli tests require a running Redis
     "tests/unittests/"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # Flaky tests
     "--deselect=tests/unittests/test_entry.py::test_command_shell_options_higher_priority"
     "--deselect=tests/unittests/test_utils.py::test_timer"
diff --git a/pkgs/by-name/is/isabelle/package.nix b/pkgs/by-name/is/isabelle/package.nix
index 3adf58f467a3..1012d06542ec 100644
--- a/pkgs/by-name/is/isabelle/package.nix
+++ b/pkgs/by-name/is/isabelle/package.nix
@@ -30,7 +30,7 @@ let
       hash = "sha256-DB/ETVZhbT82IMZA97TmHG6gJcGpFavxDKDTwPzIF80=";
     };
 
-    buildPhase = (if stdenv.isDarwin then ''
+    buildPhase = (if stdenv.hostPlatform.isDarwin then ''
       LDFLAGS="-dynamic -undefined dynamic_lookup -lSystem"
     '' else ''
       LDFLAGS="-fPIC -shared"
@@ -52,7 +52,7 @@ in stdenv.mkDerivation (finalAttrs: rec {
   dirname = "Isabelle${version}";
 
   src =
-    if stdenv.isDarwin
+    if stdenv.hostPlatform.isDarwin
     then
       fetchurl
         {
@@ -74,14 +74,14 @@ in stdenv.mkDerivation (finalAttrs: rec {
   nativeBuildInputs = [ java ];
 
   buildInputs = [ polyml veriT vampire eprover-ho nettools ]
-    ++ lib.optionals (!stdenv.isDarwin) [ java procps ];
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ java procps ];
 
-  sourceRoot = "${dirname}${lib.optionalString stdenv.isDarwin ".app"}";
+  sourceRoot = "${dirname}${lib.optionalString stdenv.hostPlatform.isDarwin ".app"}";
 
   doCheck = stdenv.hostPlatform.system != "aarch64-linux";
   checkPhase = "bin/isabelle build -v HOL-SMT_Examples";
 
-  postUnpack = lib.optionalString stdenv.isDarwin ''
+  postUnpack = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mv $sourceRoot ${dirname}
     sourceRoot=${dirname}
   '';
@@ -144,10 +144,10 @@ in stdenv.mkDerivation (finalAttrs: rec {
   '' + lib.optionalString (stdenv.hostPlatform.system == "x86_64-darwin") ''
     substituteInPlace lib/scripts/isabelle-platform \
       --replace-fail 'ISABELLE_APPLE_PLATFORM64=arm64-darwin' ""
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     arch=${if stdenv.hostPlatform.system == "aarch64-linux" then "arm64-linux" else stdenv.hostPlatform.system}
     for f in contrib/*/$arch/{z3,nunchaku,spass,zipperposition}; do
-      patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f"${lib.optionalString stdenv.isAarch64 " || true"}
+      patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f"${lib.optionalString stdenv.hostPlatform.isAarch64 " || true"}
     done
     patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) contrib/bash_process-*/$arch/bash_process
     for d in contrib/kodkodi-*/jni/$arch; do
@@ -221,7 +221,7 @@ in stdenv.mkDerivation (finalAttrs: rec {
     license = licenses.bsd3;
     maintainers = [ maintainers.jwiegley maintainers.jvanbruegge ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 
   passthru.withComponents = f:
diff --git a/pkgs/by-name/iv/iverilog/package.nix b/pkgs/by-name/iv/iverilog/package.nix
index 06e8a94a4c53..3dbbd8056dd3 100644
--- a/pkgs/by-name/iv/iverilog/package.nix
+++ b/pkgs/by-name/iv/iverilog/package.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     NIX_CFLAGS_COMPILE = "-Wno-error=implicit-function-declaration";
   };
 
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
   # (see https://github.com/steveicarus/iverilog/issues/917)
   # so disable the full suite for now.
   doCheck = true;
-  doInstallCheck = !stdenv.isAarch64;
+  doInstallCheck = !stdenv.hostPlatform.isAarch64;
 
   nativeInstallCheckInputs = [
     perl
diff --git a/pkgs/by-name/j/j/package.nix b/pkgs/by-name/j/j/package.nix
index 97a8064cc60d..a832bc953333 100644
--- a/pkgs/by-name/j/j/package.nix
+++ b/pkgs/by-name/j/j/package.nix
@@ -30,17 +30,17 @@ stdenv.mkDerivation rec {
 
   # Emulate jplatform64.sh configuration variables
   jplatform =
-    if stdenv.isDarwin then "darwin"
+    if stdenv.hostPlatform.isDarwin then "darwin"
     else if stdenv.hostPlatform.isAarch then "raspberry"
-    else if stdenv.isLinux then "linux"
+    else if stdenv.hostPlatform.isLinux then "linux"
     else "unsupported";
 
   j64x =
-    if stdenv.is32bit then "j32"
-    else if stdenv.isx86_64 then
-      if stdenv.isLinux && avx2Support then "j64avx2" else "j64"
-    else if stdenv.isAarch64 then
-      if stdenv.isDarwin then "j64arm" else "j64"
+    if stdenv.hostPlatform.is32bit then "j32"
+    else if stdenv.hostPlatform.isx86_64 then
+      if stdenv.hostPlatform.isLinux && avx2Support then "j64avx2" else "j64"
+    else if stdenv.hostPlatform.isAarch64 then
+      if stdenv.hostPlatform.isDarwin then "j64arm" else "j64"
     else "unsupported";
 
   env.NIX_LDFLAGS = "-lgmp";
@@ -80,7 +80,7 @@ stdenv.mkDerivation rec {
     '';
     license = licenses.gpl3Only;
     maintainers = with maintainers; [ raskin synthetica AndersonTorres ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     platforms = platforms.all;
     mainProgram = "jconsole";
   };
diff --git a/pkgs/by-name/jd/jdt-language-server/package.nix b/pkgs/by-name/jd/jdt-language-server/package.nix
index 33d735424c32..268599a385ec 100644
--- a/pkgs/by-name/jd/jdt-language-server/package.nix
+++ b/pkgs/by-name/jd/jdt-language-server/package.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation (finalAttrs: {
       # The application ships with different config directories for each platform.
       # Note the application come with ARM variants as well, although the
       # current included wrapper doesn't use them.
-      configDir = if stdenv.isDarwin then "config_mac" else "config_linux";
+      configDir = if stdenv.hostPlatform.isDarwin then "config_mac" else "config_linux";
     in
     ''
       runHook preInstall
diff --git a/pkgs/by-name/je/jellyfin-web/package.nix b/pkgs/by-name/je/jellyfin-web/package.nix
index c1f81ee3f2f5..ee5622baabd6 100644
--- a/pkgs/by-name/je/jellyfin-web/package.nix
+++ b/pkgs/by-name/je/jellyfin-web/package.nix
@@ -16,7 +16,7 @@ let
   # node-canvas builds code that requires aligned_alloc,
   # which on Darwin requires at least the 10.15 SDK
   stdenv' =
-    if stdenv.isDarwin then
+    if stdenv.hostPlatform.isDarwin then
       overrideSDK stdenv {
         darwinMinVersion = "10.15";
         darwinSdkVersion = "11.0";
@@ -42,11 +42,11 @@ buildNpmPackage' rec {
 
   npmBuildScript = [ "build:production" ];
 
-  nativeBuildInputs = [ pkg-config ] ++ lib.optionals stdenv.isDarwin [ xcbuild ];
+  nativeBuildInputs = [ pkg-config ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcbuild ];
 
   buildInputs =
     [ pango ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       giflib
       darwin.apple_sdk.frameworks.CoreText
     ];
diff --git a/pkgs/by-name/ji/jikken/package.nix b/pkgs/by-name/ji/jikken/package.nix
index aa4ab8184578..a401e9633fbc 100644
--- a/pkgs/by-name/ji/jikken/package.nix
+++ b/pkgs/by-name/ji/jikken/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk_11_0.frameworks.IOKit
       darwin.apple_sdk_11_0.frameworks.Security
       darwin.apple_sdk_11_0.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/jn/jnv/package.nix b/pkgs/by-name/jn/jnv/package.nix
index ecb59dad3775..6257fbeede66 100644
--- a/pkgs/by-name/jn/jnv/package.nix
+++ b/pkgs/by-name/jn/jnv/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-xF0sxoSo7z7lxrF3wFAmU7edREoWKBFBnZ6Xq22c8q0=";
 
-  buildInputs = lib.optional stdenv.isDarwin (
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks;
     [
       CoreGraphics
diff --git a/pkgs/by-name/jo/job-security/package.nix b/pkgs/by-name/jo/job-security/package.nix
index 3912f03daf6b..1d057f6ecd01 100644
--- a/pkgs/by-name/jo/job-security/package.nix
+++ b/pkgs/by-name/jo/job-security/package.nix
@@ -23,6 +23,6 @@ rustPlatform.buildRustPackage rec {
     license = with lib.licenses; [ asl20 mit mpl20 ];
     maintainers = with lib.maintainers; [ fgaz ];
     mainProgram = "jobs";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/jo/jogl/package.nix b/pkgs/by-name/jo/jogl/package.nix
index a12b6b762220..d8a626ee15c0 100644
--- a/pkgs/by-name/jo/jogl/package.nix
+++ b/pkgs/by-name/jo/jogl/package.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation {
       --delete '//*[@if="setup.addNativeBroadcom"]' \
       jogl/make/build-newt.xml
   ''
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i '/if="use.macos/d' gluegen/make/gluegen-cpptasks-base.xml
     rm -r jogl/oculusvr-sdk
   '';
@@ -67,11 +67,11 @@ stdenv.mkDerivation {
     git
     xmlstarlet
     stripJavaArchivesHook
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     xcbuild
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     udev
     xorg.libX11
     xorg.libXrandr
@@ -81,7 +81,7 @@ stdenv.mkDerivation {
     xorg.libXxf86vm
     xorg.libXrender
     mesa
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.AppKit
     darwin.apple_sdk_11_0.frameworks.Cocoa
   ];
diff --git a/pkgs/by-name/jo/joshuto/package.nix b/pkgs/by-name/jo/joshuto/package.nix
index 18ef1ea06369..0d35b905a99b 100644
--- a/pkgs/by-name/jo/joshuto/package.nix
+++ b/pkgs/by-name/jo/joshuto/package.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/by-name/jo/josm/package.nix b/pkgs/by-name/jo/josm/package.nix
index 749f6e0ba295..920b294562d1 100644
--- a/pkgs/by-name/jo/josm/package.nix
+++ b/pkgs/by-name/jo/josm/package.nix
@@ -33,10 +33,10 @@ stdenv.mkDerivation rec {
   dontUnpack = true;
 
   nativeBuildInputs = [ makeWrapper ];
-  buildInputs = lib.optionals (!stdenv.isDarwin) [ jre ];
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ jre ];
 
   installPhase =
-    if stdenv.isDarwin then ''
+    if stdenv.hostPlatform.isDarwin then ''
       mkdir -p $out/Applications
       ${unzip}/bin/unzip ${srcs.macosx} 'JOSM.app/*' -d $out/Applications
     '' else ''
diff --git a/pkgs/by-name/jo/jove/package.nix b/pkgs/by-name/jo/jove/package.nix
index 82c3f9056d35..8c4c17170753 100644
--- a/pkgs/by-name/jo/jove/package.nix
+++ b/pkgs/by-name/jo/jove/package.nix
@@ -53,6 +53,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with lib.maintainers; [ AndersonTorres ];
     platforms = lib.platforms.unix;
     # never built on Hydra: https://hydra.nixos.org/job/nixpkgs/trunk/jove.x86_64-darwin
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/ju/just/package.nix b/pkgs/by-name/ju/just/package.nix
index 3dfcd639f5d1..169829952641 100644
--- a/pkgs/by-name/ju/just/package.nix
+++ b/pkgs/by-name/ju/just/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-X3noVDRnnrR6xuOBfoH4JPdcPLOBHbGQb6opNvzK/TE=";
 
   nativeBuildInputs = [ installShellFiles mdbook ];
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   preCheck = ''
     # USER must not be empty
diff --git a/pkgs/by-name/ju/justbuild/package.nix b/pkgs/by-name/ju/justbuild/package.nix
index 7b531d554eae..86274edd4f3e 100644
--- a/pkgs/by-name/ju/justbuild/package.nix
+++ b/pkgs/by-name/ju/justbuild/package.nix
@@ -90,7 +90,7 @@ stdenv.mkDerivation rec {
     mv etc/repos.json.patched etc/repos.json
     jq '.unknown.PATH = []' etc/toolchain/CC/TARGETS > etc/toolchain/CC/TARGETS.patched
     mv etc/toolchain/CC/TARGETS.patched etc/toolchain/CC/TARGETS
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -ie 's|-Wl,-z,stack-size=8388608|-Wl,-stack_size,0x800000|' bin/bootstrap.py
   '';
 
@@ -166,7 +166,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Generic build tool";
     homepage = "https://github.com/just-buildsystem/justbuild";
     license = licenses.asl20;
diff --git a/pkgs/by-name/jw/jwasm/package.nix b/pkgs/by-name/jw/jwasm/package.nix
index a1cf1a9cf5c0..eaf30e58356e 100644
--- a/pkgs/by-name/jw/jwasm/package.nix
+++ b/pkgs/by-name/jw/jwasm/package.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation (finalAttrs: {
     license = lib.licenses.gpl2Plus;
     maintainers = with lib.maintainers; [ AndersonTorres ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
 # TODO: generalize for Windows builds
diff --git a/pkgs/by-name/ka/kakoune-lsp/package.nix b/pkgs/by-name/ka/kakoune-lsp/package.nix
index 74fdfb2c6e30..42176134371b 100644
--- a/pkgs/by-name/ka/kakoune-lsp/package.nix
+++ b/pkgs/by-name/ka/kakoune-lsp/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-QonOqdcdp1vbxzLnF46X0DLVay2Up1LvHZ/ZZ04LqlE=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     Security
     SystemConfiguration
diff --git a/pkgs/by-name/ka/kana/package.nix b/pkgs/by-name/ka/kana/package.nix
index 3fc7e8d3c257..e0260d1363d6 100644
--- a/pkgs/by-name/ka/kana/package.nix
+++ b/pkgs/by-name/ka/kana/package.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
     gst-plugins-base
     gst-plugins-bad
     gst-plugins-good
-  ]) ++ lib.optionals stdenv.isDarwin [
+  ]) ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/by-name/ka/kanha/package.nix b/pkgs/by-name/ka/kanha/package.nix
index c3f713d0370d..583671f38433 100644
--- a/pkgs/by-name/ka/kanha/package.nix
+++ b/pkgs/by-name/ka/kanha/package.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         Security
diff --git a/pkgs/by-name/ka/kanidm/package.nix b/pkgs/by-name/ka/kanidm/package.nix
index 4a6272992787..cfa9e43ba7ff 100644
--- a/pkgs/by-name/ka/kanidm/package.nix
+++ b/pkgs/by-name/ka/kanidm/package.nix
@@ -24,7 +24,7 @@
 }:
 
 let
-  arch = if stdenv.isx86_64 then "x86_64" else "generic";
+  arch = if stdenv.hostPlatform.isx86_64 then "x86_64" else "generic";
 in
 rustPlatform.buildRustPackage rec {
   pname = "kanidm";
@@ -51,7 +51,7 @@ rustPlatform.buildRustPackage rec {
       format = (formats.toml { }).generate "${KANIDM_BUILD_PROFILE}.toml";
       profile = {
         admin_bind_path = "/run/kanidmd/sock";
-        cpu_flags = if stdenv.isx86_64 then "x86_64_legacy" else "none";
+        cpu_flags = if stdenv.hostPlatform.isx86_64 then "x86_64_legacy" else "none";
         default_config_path = "/etc/kanidm/server.toml";
         default_unix_shell_path = "${lib.getBin bashInteractive}/bin/bash";
         htmx_ui_pkg_path = "@htmx_ui_pkg_path@";
diff --git a/pkgs/by-name/kc/kcl/package.nix b/pkgs/by-name/kc/kcl/package.nix
index 84012a3a59bb..b016abe16bb9 100644
--- a/pkgs/by-name/kc/kcl/package.nix
+++ b/pkgs/by-name/kc/kcl/package.nix
@@ -23,7 +23,7 @@ buildGoModule rec {
   vendorHash = "sha256-DGYYH5sKhpcWHYoUim4NyflzqsXFc4MCOqIw5jIfIiM=";
 
   # By default, libs and bins are stripped. KCL will crash on darwin if they are.
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   ldflags = [
     "-w -s"
@@ -33,7 +33,7 @@ buildGoModule rec {
   nativeBuildInputs = [ makeWrapper installShellFiles ];
 
   buildInputs = [ kclvm kclvm_cli ] ++ (
-    lib.optional stdenv.isDarwin [
+    lib.optional stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.CoreServices
       darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/kc/kclvm/package.nix b/pkgs/by-name/kc/kclvm/package.nix
index 08864ba0b65a..17e9cefc8f9a 100644
--- a/pkgs/by-name/kc/kclvm/package.nix
+++ b/pkgs/by-name/kc/kclvm/package.nix
@@ -28,14 +28,14 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
-  buildInputs = [ rustc ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ rustc ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id $out/lib/libkclvm_cli_cdylib.dylib $out/lib/libkclvm_cli_cdylib.dylib
   '';
 
diff --git a/pkgs/by-name/kc/kclvm_cli/package.nix b/pkgs/by-name/kc/kclvm_cli/package.nix
index 2100a96996da..79b3b10f6664 100644
--- a/pkgs/by-name/kc/kclvm_cli/package.nix
+++ b/pkgs/by-name/kc/kclvm_cli/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
   cargoPatches = [ ./cargo_lock.patch ];
 
   buildInputs = [ kclvm rustc ] ++ (
-    lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.CoreServices
       darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/ke/keeweb/package.nix b/pkgs/by-name/ke/keeweb/package.nix
index 063d59880d61..48b9a603d841 100644
--- a/pkgs/by-name/ke/keeweb/package.nix
+++ b/pkgs/by-name/ke/keeweb/package.nix
@@ -82,7 +82,7 @@ let
     platforms = builtins.attrNames srcs;
   };
 in
-if stdenv.isDarwin then
+if stdenv.hostPlatform.isDarwin then
   stdenv.mkDerivation {
     inherit
       pname
diff --git a/pkgs/by-name/ke/keycard-cli/package.nix b/pkgs/by-name/ke/keycard-cli/package.nix
index 017990084c56..1b815533d0ab 100644
--- a/pkgs/by-name/ke/keycard-cli/package.nix
+++ b/pkgs/by-name/ke/keycard-cli/package.nix
@@ -24,6 +24,6 @@ buildGoModule rec {
     homepage = "https://keycard.status.im";
     license = licenses.mpl20;
     maintainers = [ maintainers.zimbatm ];
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/keycard-cli.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/keycard-cli.x86_64-darwin
   };
 }
diff --git a/pkgs/by-name/ke/keydb/package.nix b/pkgs/by-name/ke/keydb/package.nix
index f33b51a0fbff..265f8a884fcb 100644
--- a/pkgs/by-name/ke/keydb/package.nix
+++ b/pkgs/by-name/ke/keydb/package.nix
@@ -48,18 +48,18 @@ stdenv.mkDerivation (finalAttrs: {
       "PREFIX=${placeholder "out"}"
       "AR=${stdenv.cc.targetPrefix}ar"
       "RANLIB=${stdenv.cc.targetPrefix}ranlib"
-      "USEASM=${if stdenv.isx86_64 then "true" else "false"}"
+      "USEASM=${if stdenv.hostPlatform.isx86_64 then "true" else "false"}"
     ]
     ++ lib.optionals (!tlsSupport) [ "BUILD_TLS=no" ]
     ++ lib.optionals withSystemd [ "USE_SYSTEMD=yes" ]
-    ++ lib.optionals (!stdenv.isx86_64) [ "MALLOC=libc" ];
+    ++ lib.optionals (!stdenv.hostPlatform.isx86_64) [ "MALLOC=libc" ];
 
   enableParallelBuilding = true;
 
-  hardeningEnable = lib.optionals (!stdenv.isDarwin) [ "pie" ];
+  hardeningEnable = lib.optionals (!stdenv.hostPlatform.isDarwin) [ "pie" ];
 
   # darwin currently lacks a pure `pgrep` which is extensively used here
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   nativeCheckInputs = [
     which
     tcl
diff --git a/pkgs/by-name/ki/kissfft/package.nix b/pkgs/by-name/ki/kissfft/package.nix
index 1480d73b537e..03d0e7d04584 100644
--- a/pkgs/by-name/ki/kissfft/package.nix
+++ b/pkgs/by-name/ki/kissfft/package.nix
@@ -62,7 +62,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # Required for `test/testcpp.c`.
   env = {
-    NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-D__MATH_LONG_DOUBLE_CONSTANTS=1";
+    NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-D__MATH_LONG_DOUBLE_CONSTANTS=1";
   };
 
   doCheck = true;
diff --git a/pkgs/by-name/kn/knxd/package.nix b/pkgs/by-name/kn/knxd/package.nix
index 38e09d579745..bcbe85fcefc2 100644
--- a/pkgs/by-name/kn/knxd/package.nix
+++ b/pkgs/by-name/kn/knxd/package.nix
@@ -10,7 +10,7 @@
 , fmt_9
 , libev
 , withSystemd ? lib.meta.availableOn stdenv.hostPlatform systemd, systemd
-, withUsb ? stdenv.isLinux, libusb1
+, withUsb ? stdenv.hostPlatform.isLinux, libusb1
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -34,7 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [ fmt_9 libev ]
     ++ lib.optional withSystemd systemd
     ++ lib.optional withUsb libusb1
-    ++ lib.optional stdenv.isDarwin argp-standalone;
+    ++ lib.optional stdenv.hostPlatform.isDarwin argp-standalone;
 
   configureFlags = [
     (lib.enableFeature withSystemd "systemd")
diff --git a/pkgs/by-name/ko/koboldcpp/package.nix b/pkgs/by-name/ko/koboldcpp/package.nix
index 85053dc716ce..4d1a69a3b0be 100644
--- a/pkgs/by-name/ko/koboldcpp/package.nix
+++ b/pkgs/by-name/ko/koboldcpp/package.nix
@@ -16,7 +16,7 @@
   config,
   cudaPackages ? { },
 
-  openblasSupport ? !stdenv.isDarwin,
+  openblasSupport ? !stdenv.hostPlatform.isDarwin,
   openblas,
 
   cublasSupport ? config.cudaSupport,
@@ -24,14 +24,14 @@
   # For example if you're on an GTX 1080 that means you're using "Pascal" and you need to pass "sm_60"
   cudaArches ? cudaPackages.cudaFlags.realArches or [ ],
 
-  clblastSupport ? stdenv.isLinux,
+  clblastSupport ? stdenv.hostPlatform.isLinux,
   clblast,
   ocl-icd,
 
   vulkanSupport ? true,
   vulkan-loader,
 
-  metalSupport ? stdenv.isDarwin && stdenv.isAarch64,
+  metalSupport ? stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64,
   march ? "",
   mtune ? "",
 }:
@@ -44,7 +44,7 @@ let
   '';
 
   darwinFrameworks =
-    if (stdenv.isDarwin && stdenv.isx86_64) then
+    if (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) then
       darwin.apple_sdk.frameworks
     else
       darwin.apple_sdk_11_0.frameworks;
@@ -74,7 +74,7 @@ effectiveStdenv.mkDerivation (finalAttrs: {
   buildInputs =
     [ tk ]
     ++ finalAttrs.pythonInputs
-    ++ lib.optionals effectiveStdenv.isDarwin [
+    ++ lib.optionals effectiveStdenv.hostPlatform.isDarwin [
       darwinFrameworks.Accelerate
       darwinFrameworks.CoreVideo
       darwinFrameworks.CoreGraphics
@@ -100,7 +100,7 @@ effectiveStdenv.mkDerivation (finalAttrs: {
 
   pythonPath = finalAttrs.pythonInputs;
 
-  darwinLdFlags = lib.optionals stdenv.isDarwin [
+  darwinLdFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "-F${darwinFrameworks.CoreServices}/Library/Frameworks"
     "-F${darwinFrameworks.Accelerate}/Library/Frameworks"
     "-framework CoreServices"
diff --git a/pkgs/by-name/ko/kokkos/package.nix b/pkgs/by-name/ko/kokkos/package.nix
index eb94813071cf..c5faab3042a3 100644
--- a/pkgs/by-name/ko/kokkos/package.nix
+++ b/pkgs/by-name/ko/kokkos/package.nix
@@ -40,6 +40,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = with licenses; [ asl20-llvm ];
     maintainers = with maintainers; [ Madouura ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/ko/komac/package.nix b/pkgs/by-name/ko/komac/package.nix
index 61f41cd5c58d..3e5186ec4851 100644
--- a/pkgs/by-name/ko/komac/package.nix
+++ b/pkgs/by-name/ko/komac/package.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage {
     dbus
     openssl
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/ko/koodo-reader/package.nix b/pkgs/by-name/ko/koodo-reader/package.nix
index a57c44b0c37f..2d5132fb4cbe 100644
--- a/pkgs/by-name/ko/koodo-reader/package.nix
+++ b/pkgs/by-name/ko/koodo-reader/package.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
       yarnBuildHook
       nodejs
     ]
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       copyDesktopItems
       wrapGAppsHook3
     ];
@@ -59,7 +59,7 @@ stdenv.mkDerivation (finalAttrs: {
   installPhase = ''
     runHook preInstall
 
-    ${lib.optionalString (!stdenv.isDarwin) ''
+    ${lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       install -Dm644 assets/icons/256x256.png $out/share/icons/hicolor/256x256/apps/koodo-reader.png
       install -Dm644 ${./mime-types.xml} $out/share/mime/packages/koodo-reader.xml
 
@@ -67,7 +67,7 @@ stdenv.mkDerivation (finalAttrs: {
       cp -r dist/*-unpacked/{locales,resources{,.pak}} $out/share/lib/koodo-reader
     ''}
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/Applications
       cp -r dist/mac*/"Koodo Reader.app" $out/Applications
       makeWrapper "$out/Applications/Koodo Reader.app/Contents/MacOS/Koodo Reader" $out/bin/koodo-reader
@@ -77,7 +77,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   # we use makeShellWrapper instead of the makeBinaryWrapper provided by wrapGAppsHook for proper shell variable expansion
-  postFixup = lib.optionalString (!stdenv.isDarwin) ''
+  postFixup = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     makeShellWrapper ${lib.getExe electron} $out/bin/koodo-reader \
       --add-flags $out/share/lib/koodo-reader/resources/app.asar \
       "''${gappsWrapperArgs[@]}" \
diff --git a/pkgs/by-name/ky/kyua/package.nix b/pkgs/by-name/ky/kyua/package.nix
index ba399a44ab74..bec61ceeb4b5 100644
--- a/pkgs/by-name/ky/kyua/package.nix
+++ b/pkgs/by-name/ky/kyua/package.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation (finalAttrs: {
         --replace-fail 'CLI_LIBS = ' 'CLI_LIBS = libutils.a '
     ''
     # These tests fail on Darwin or are unreliable.
-    + lib.optionalString (finalAttrs.doInstallCheck && stdenv.isDarwin) ''
+    + lib.optionalString (finalAttrs.doInstallCheck && stdenv.hostPlatform.isDarwin) ''
       sed -i utils/process/Makefile.am.inc -e '/executor_pid_test/d'
       substituteInPlace utils/process/Kyuafile \
         --replace-fail 'atf_test_program{name="executor_pid_test"}' ""
@@ -57,7 +57,7 @@ stdenv.mkDerivation (finalAttrs: {
         --replace-fail 'atf_add_test_case premature_exit' ""
     ''
     # fchflags and UF_NOUNLINK are not supported on Linux. Other tests also fail.
-    + lib.optionalString (finalAttrs.doInstallCheck && stdenv.isLinux) ''
+    + lib.optionalString (finalAttrs.doInstallCheck && stdenv.hostPlatform.isLinux) ''
       sed -i utils/process/Makefile.am.inc -e '/executor_pid_test/d'
       substituteInPlace utils/process/Kyuafile \
         --replace-fail 'atf_test_program{name="executor_pid_test"}' ""
diff --git a/pkgs/by-name/la/lan-mouse/package.nix b/pkgs/by-name/la/lan-mouse/package.nix
index dff74b1b7958..b9bf9b2ddb02 100644
--- a/pkgs/by-name/la/lan-mouse/package.nix
+++ b/pkgs/by-name/la/lan-mouse/package.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
     libX11
     libXtst
   ]
-  ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.CoreGraphics;
+  ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.CoreGraphics;
 
   cargoHash = "sha256-pDdpmZPaClU8KjFHO7v3FDQp9D83GQN+SnFg53q2fjs=";
 
diff --git a/pkgs/by-name/la/lanraragi/package.nix b/pkgs/by-name/la/lanraragi/package.nix
index ff32a96d78fd..24eab34147ed 100644
--- a/pkgs/by-name/la/lanraragi/package.nix
+++ b/pkgs/by-name/la/lanraragi/package.nix
@@ -61,7 +61,7 @@ buildNpmPackage rec {
     TimeLocal
     YAMLPP
     StringSimilarity
-  ] ++ lib.optionals stdenv.isLinux [ LinuxInotify2 ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ LinuxInotify2 ];
 
   buildPhase = ''
     runHook preBuild
diff --git a/pkgs/by-name/la/laszip/package.nix b/pkgs/by-name/la/laszip/package.nix
index 65c2e6934a24..ded2abb03fec 100644
--- a/pkgs/by-name/la/laszip/package.nix
+++ b/pkgs/by-name/la/laszip/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [
     cmake
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
 
diff --git a/pkgs/by-name/la/lazymc/package.nix b/pkgs/by-name/la/lazymc/package.nix
index 9202d32b2e8a..8df8352d8a51 100644
--- a/pkgs/by-name/la/lazymc/package.nix
+++ b/pkgs/by-name/la/lazymc/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/by-name/la/lazysql/package.nix b/pkgs/by-name/la/lazysql/package.nix
index 9957de463d87..8d6e2c93fad0 100644
--- a/pkgs/by-name/la/lazysql/package.nix
+++ b/pkgs/by-name/la/lazysql/package.nix
@@ -19,7 +19,7 @@ buildGoModule rec {
 
   vendorHash = "sha256-celee8uyoirX+vtAww2iQJtRwJEHyfHL2mZA2muSRiQ=";
 
-  buildInputs = lib.optionals stdenv.isLinux [ xorg.libX11 ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Cocoa ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ xorg.libX11 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Cocoa ];
 
   meta = with lib; {
     description = "A cross-platform TUI database management tool written in Go";
diff --git a/pkgs/by-name/lb/lbreakouthd/package.nix b/pkgs/by-name/lb/lbreakouthd/package.nix
index 45911bacf770..267571846693 100644
--- a/pkgs/by-name/lb/lbreakouthd/package.nix
+++ b/pkgs/by-name/lb/lbreakouthd/package.nix
@@ -39,6 +39,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "lbreakouthd";
     maintainers = with lib.maintainers; [ AndersonTorres ];
     inherit (SDL2.meta) platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/ld/ld64/package.nix b/pkgs/by-name/ld/ld64/package.nix
index 2b00fdfb62db..4c9ed4c5f340 100644
--- a/pkgs/by-name/ld/ld64/package.nix
+++ b/pkgs/by-name/ld/ld64/package.nix
@@ -148,7 +148,7 @@ stdenv.mkDerivation (finalAttrs: {
     libunwind
     openssl
     xar
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.dyld ] ++ lib.optionals stdenv.isLinux [ libdispatch ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.dyld ] ++ lib.optionals stdenv.hostPlatform.isLinux [ libdispatch ];
 
   # Note for overrides: ld64 cannot be built as a debug build because of UB in its iteration implementations,
   # which trigger libc++ debug assertions due to trying to take the address of the first element of an emtpy vector.
diff --git a/pkgs/by-name/le/leaf/package.nix b/pkgs/by-name/le/leaf/package.nix
index bda0c6d2afb0..1bd44f23d304 100644
--- a/pkgs/by-name/le/leaf/package.nix
+++ b/pkgs/by-name/le/leaf/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-2I0XusAI98WLzGcwEorPmtcK3VkpwpkIn0JKwn3gT1c=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/le/legba/package.nix b/pkgs/by-name/le/legba/package.nix
index 3f2453a13d86..efb9a351340b 100644
--- a/pkgs/by-name/le/legba/package.nix
+++ b/pkgs/by-name/le/legba/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-viDfJ214Zf5segjrLSTbHav5T5e219NAF+MvuPow+JQ=";
 
   nativeBuildInputs = [ cmake pkg-config ];
-  buildInputs = [ openssl.dev samba ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl.dev samba ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/by-name/li/liana/package.nix b/pkgs/by-name/li/liana/package.nix
index ee5147b7d091..ab9b9e15cfd0 100644
--- a/pkgs/by-name/li/liana/package.nix
+++ b/pkgs/by-name/li/liana/package.nix
@@ -94,6 +94,6 @@ rustPlatform.buildRustPackage rec {
     license = licenses.bsd3;
     maintainers = with maintainers; [ dunxen ];
     platforms = platforms.linux;
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/by-name/li/lianad/package.nix b/pkgs/by-name/li/lianad/package.nix
index b2730c55a5bc..094044274699 100644
--- a/pkgs/by-name/li/lianad/package.nix
+++ b/pkgs/by-name/li/lianad/package.nix
@@ -38,6 +38,6 @@ rustPlatform.buildRustPackage rec {
       lib.maintainers.plebhash
     ];
     platforms = lib.platforms.linux;
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/by-name/li/lib25519/package.nix b/pkgs/by-name/li/lib25519/package.nix
index 90d377948f93..68d35a796a03 100644
--- a/pkgs/by-name/li/lib25519/package.nix
+++ b/pkgs/by-name/li/lib25519/package.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation (finalAttrs: {
     libcpucycles
   ];
 
-  preFixup = lib.optionalString stdenv.isDarwin ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id "$out/lib/lib25519.1.dylib" "$out/lib/lib25519.1.dylib"
     for f in $out/bin/*; do
       install_name_tool -change "lib25519.1.dylib" "$out/lib/lib25519.1.dylib" "$f"
@@ -45,7 +45,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   # failure: crypto_pow does not handle p=q overlap
-  doInstallCheck = !stdenv.isDarwin;
+  doInstallCheck = !stdenv.hostPlatform.isDarwin;
   installCheckPhase = ''
     runHook preInstallCheck
     $out/bin/lib25519-test
diff --git a/pkgs/by-name/li/libarchive/package.nix b/pkgs/by-name/li/libarchive/package.nix
index 09a96e829e33..402514a64745 100644
--- a/pkgs/by-name/li/libarchive/package.nix
+++ b/pkgs/by-name/li/libarchive/package.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation (finalAttrs: {
       # access-time-related tests flakey on some systems
       "cpio/test/test_option_a.c"
       "cpio/test/test_option_t.c"
-    ] ++ lib.optionals (stdenv.isAarch64 && stdenv.isLinux) [
+    ] ++ lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) [
       # only on some aarch64-linux systems?
       "cpio/test/test_basic.c"
       "cpio/test/test_format_newc.c"
@@ -82,15 +82,15 @@ stdenv.mkDerivation (finalAttrs: {
     zlib
     zstd
   ] ++ lib.optional stdenv.hostPlatform.isUnix sharutils
-    ++ lib.optionals stdenv.isLinux [ acl attr e2fsprogs ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ acl attr e2fsprogs ]
     ++ lib.optional xarSupport libxml2;
 
   # Without this, pkg-config-based dependencies are unhappy
-  propagatedBuildInputs = lib.optionals stdenv.isLinux [ attr acl ];
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ attr acl ];
 
   configureFlags = lib.optional (!xarSupport) "--without-xml2";
 
-  preBuild = lib.optionalString stdenv.isCygwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isCygwin ''
     echo "#include <windows.h>" >> config.h
   '';
 
diff --git a/pkgs/by-name/li/libaribcaption/package.nix b/pkgs/by-name/li/libaribcaption/package.nix
index 7d39841ec6fe..936991ef6a87 100644
--- a/pkgs/by-name/li/libaribcaption/package.nix
+++ b/pkgs/by-name/li/libaribcaption/package.nix
@@ -27,10 +27,10 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [ "-DBUILD_SHARED_LIBS=ON" ];
 
-  buildInputs = lib.optionals (!stdenv.isDarwin) [
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [
     fontconfig
     freetype
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ApplicationServices
     CoreFoundation
     CoreGraphics
diff --git a/pkgs/by-name/li/libcaca/package.nix b/pkgs/by-name/li/libcaca/package.nix
index 6b99439fe017..bb0d57168766 100644
--- a/pkgs/by-name/li/libcaca/package.nix
+++ b/pkgs/by-name/li/libcaca/package.nix
@@ -7,7 +7,7 @@
 , ncurses
 , pkg-config
 , zlib
-, x11Support ? !stdenv.isDarwin
+, x11Support ? !stdenv.hostPlatform.isDarwin
 }:
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/by-name/li/libclipboard/package.nix b/pkgs/by-name/li/libclipboard/package.nix
index 1febf35d1c8f..eec120bcd62d 100644
--- a/pkgs/by-name/li/libclipboard/package.nix
+++ b/pkgs/by-name/li/libclipboard/package.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   buildInputs = [ libxcb libXau libXdmcp ]
-    ++ lib.optional stdenv.isDarwin [ darwin.apple_sdk.frameworks.Cocoa ];
+    ++ lib.optional stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Cocoa ];
   nativeBuildInputs = [ cmake pkg-config ];
 
   cmakeFlags = [ "-DBUILD_SHARED_LIBS=ON" ];
diff --git a/pkgs/by-name/li/libcpucycles/package.nix b/pkgs/by-name/li/libcpucycles/package.nix
index 4e88903de66d..84292201640b 100644
--- a/pkgs/by-name/li/libcpucycles/package.nix
+++ b/pkgs/by-name/li/libcpucycles/package.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   inherit (librandombytes) hardeningDisable configurePlatforms env;
 
-  preFixup = lib.optionalString stdenv.isDarwin ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id "$out/lib/libcpucycles.1.dylib" "$out/lib/libcpucycles.1.dylib"
     install_name_tool -change "libcpucycles.1.dylib" "$out/lib/libcpucycles.1.dylib" "$out/bin/cpucycles-info"
   '';
diff --git a/pkgs/by-name/li/libdeltachat/package.nix b/pkgs/by-name/li/libdeltachat/package.nix
index 360ac8a80e1f..237e48a7c3ea 100644
--- a/pkgs/by-name/li/libdeltachat/package.nix
+++ b/pkgs/by-name/li/libdeltachat/package.nix
@@ -50,7 +50,7 @@ in stdenv.mkDerivation rec {
     pkg-config
     rustPlatform.cargoSetupHook
     cargo
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
 
@@ -58,7 +58,7 @@ in stdenv.mkDerivation rec {
     openssl
     sqlcipher
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/li/libetebase/package.nix b/pkgs/by-name/li/libetebase/package.nix
index d039cad84201..c76b5a2320f7 100644
--- a/pkgs/by-name/li/libetebase/package.nix
+++ b/pkgs/by-name/li/libetebase/package.nix
@@ -38,7 +38,7 @@ rustPlatform.buildRustPackage rec {
     description = "A C library for Etebase";
     homepage = "https://www.etebase.com/";
     license = licenses.bsd3;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ laalsaas ];
     pkgConfigModules = [ "etebase" ];
   };
diff --git a/pkgs/by-name/li/libewf-legacy/package.nix b/pkgs/by-name/li/libewf-legacy/package.nix
index 3d2aee4d2874..fdd202f8c96d 100644
--- a/pkgs/by-name/li/libewf-legacy/package.nix
+++ b/pkgs/by-name/li/libewf-legacy/package.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ zlib openssl libuuid ]
-    ++ lib.optionals stdenv.isDarwin [ bzip2 ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ bzip2 ];
 
   meta = {
     description = "Legacy library for support of the Expert Witness Compression Format";
diff --git a/pkgs/by-name/li/libgedit-amtk/package.nix b/pkgs/by-name/li/libgedit-amtk/package.nix
index 76b5bfd5fcae..631e6e623b9e 100644
--- a/pkgs/by-name/li/libgedit-amtk/package.nix
+++ b/pkgs/by-name/li/libgedit-amtk/package.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     dbus # For dbus-run-session
   ];
 
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
   checkPhase = ''
     runHook preCheck
 
diff --git a/pkgs/by-name/li/libhttpserver/package.nix b/pkgs/by-name/li/libhttpserver/package.nix
index 2a99246aab56..a61342b99d07 100644
--- a/pkgs/by-name/li/libhttpserver/package.nix
+++ b/pkgs/by-name/li/libhttpserver/package.nix
@@ -41,6 +41,6 @@ stdenv.mkDerivation rec {
     license = licenses.lgpl21Plus;
     maintainers = with maintainers; [ pongo1231 ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # configure: error: cannot find required auxiliary files: ltmain.sh
+    broken = stdenv.hostPlatform.isDarwin; # configure: error: cannot find required auxiliary files: ltmain.sh
   };
 }
diff --git a/pkgs/by-name/li/libiconv-darwin/package.nix b/pkgs/by-name/li/libiconv-darwin/package.nix
index 5792568852ff..e928cd999165 100644
--- a/pkgs/by-name/li/libiconv-darwin/package.nix
+++ b/pkgs/by-name/li/libiconv-darwin/package.nix
@@ -75,7 +75,7 @@ stdenv.mkDerivation (finalAttrs: {
   mesonFlags = [ (lib.mesonBool "tests" finalAttrs.doInstallCheck) ];
 
   postInstall =
-    lib.optionalString (stdenv.isDarwin && !hostPlatform.isStatic) ''
+    lib.optionalString (stdenv.hostPlatform.isDarwin && !hostPlatform.isStatic) ''
       ${stdenv.cc.targetPrefix}install_name_tool "$out/lib/libiconv.2.dylib" \
         -change '@rpath/libcharset.1.dylib' "$out/lib/libcharset.1.dylib"
     ''
diff --git a/pkgs/by-name/li/libisoburn/package.nix b/pkgs/by-name/li/libisoburn/package.nix
index 7fc8c6aff60f..498c3394d3e1 100644
--- a/pkgs/by-name/li/libisoburn/package.nix
+++ b/pkgs/by-name/li/libisoburn/package.nix
@@ -39,12 +39,12 @@ stdenv.mkDerivation (finalAttrs: {
     zlib
     libburn
     libisofs
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     acl
     attr
   ];
 
-  propagatedBuildInputs = lib.optionals stdenv.isLinux [
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     acl
   ];
 
diff --git a/pkgs/by-name/li/libisofs/package.nix b/pkgs/by-name/li/libisofs/package.nix
index ac9c606b5552..52b807c6c8d2 100644
--- a/pkgs/by-name/li/libisofs/package.nix
+++ b/pkgs/by-name/li/libisofs/package.nix
@@ -24,10 +24,10 @@ stdenv.mkDerivation (finalAttrs: {
     autoreconfHook
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     acl
     attr
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ] ++ [
     zlib
diff --git a/pkgs/by-name/li/libmpd/package.nix b/pkgs/by-name/li/libmpd/package.nix
index bf2e6c70d2ad..bb6c9ed45f8c 100644
--- a/pkgs/by-name/li/libmpd/package.nix
+++ b/pkgs/by-name/li/libmpd/package.nix
@@ -42,6 +42,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with maintainers; [ doronbehar ];
     platforms = platforms.all;
     # Getting DARWIN_NULL related errors
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/li/libmpdclient/package.nix b/pkgs/by-name/li/libmpdclient/package.nix
index 691a1b76a2fb..297ca698b0c9 100644
--- a/pkgs/by-name/li/libmpdclient/package.nix
+++ b/pkgs/by-name/li/libmpdclient/package.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [
     meson
     ninja
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
 
diff --git a/pkgs/by-name/li/libopus/package.nix b/pkgs/by-name/li/libopus/package.nix
index cdf00a244ba4..f809c40000e9 100644
--- a/pkgs/by-name/li/libopus/package.nix
+++ b/pkgs/by-name/li/libopus/package.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.mesonEnable "docs" false)
   ];
 
-  doCheck = !stdenv.isi686 && !stdenv.isAarch32; # test_unit_LPC_inv_pred_gain fails
+  doCheck = !stdenv.hostPlatform.isi686 && !stdenv.hostPlatform.isAarch32; # test_unit_LPC_inv_pred_gain fails
 
   passthru = {
     updateScript = gitUpdater {
diff --git a/pkgs/by-name/li/libplacebo_5/package.nix b/pkgs/by-name/li/libplacebo_5/package.nix
index 5bc799ddf860..e75d44dcdf26 100644
--- a/pkgs/by-name/li/libplacebo_5/package.nix
+++ b/pkgs/by-name/li/libplacebo_5/package.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
     (lib.mesonBool "demos" false) # Don't build and install the demo programs
     (lib.mesonEnable "d3d11" false) # Disable the Direct3D 11 based renderer
     (lib.mesonEnable "glslang" false) # rely on shaderc for GLSL compilation instead
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     (lib.mesonEnable "unwind" false) # libplacebo doesn’t build with `darwin.libunwind`
   ];
 
diff --git a/pkgs/by-name/li/librandombytes/package.nix b/pkgs/by-name/li/librandombytes/package.nix
index f36a94018e75..5bb8175420de 100644
--- a/pkgs/by-name/li/librandombytes/package.nix
+++ b/pkgs/by-name/li/librandombytes/package.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [ openssl ];
 
-  preFixup = lib.optionalString stdenv.isDarwin ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id "$out/lib/librandombytes-kernel.1.dylib" "$out/lib/librandombytes-kernel.1.dylib"
     install_name_tool -change "librandombytes-kernel.1.dylib" "$out/lib/librandombytes-kernel.1.dylib" "$out/bin/randombytes-info"
   '';
diff --git a/pkgs/by-name/li/librep/package.nix b/pkgs/by-name/li/librep/package.nix
index 84f610ce2474..373f8232a857 100644
--- a/pkgs/by-name/li/librep/package.nix
+++ b/pkgs/by-name/li/librep/package.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation (finalAttrs: {
   strictDeps = true;
 
   # ensure libsystem/ctype functions don't get duplicated when using clang
-  configureFlags = lib.optionals stdenv.isDarwin [ "CFLAGS=-std=gnu89" ];
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "CFLAGS=-std=gnu89" ];
 
   setupHook = ./setup-hook.sh;
 
diff --git a/pkgs/by-name/li/librum/package.nix b/pkgs/by-name/li/librum/package.nix
index 2d6612c68098..40158f72a120 100644
--- a/pkgs/by-name/li/librum/package.nix
+++ b/pkgs/by-name/li/librum/package.nix
@@ -35,14 +35,14 @@ stdenv.mkDerivation rec {
     cmake
     qt6.qttools
     qt6.wrapQtAppsHook
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     desktopToDarwinBundle
   ];
 
   buildInputs = [
     qt6.qtbase
     qt6.qtsvg
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qt6.qtwayland
   ];
 
diff --git a/pkgs/by-name/li/libsignal-ffi/package.nix b/pkgs/by-name/li/libsignal-ffi/package.nix
index f2a8341a2097..797729d7caa0 100644
--- a/pkgs/by-name/li/libsignal-ffi/package.nix
+++ b/pkgs/by-name/li/libsignal-ffi/package.nix
@@ -32,12 +32,12 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-hQ3iWGLef1y3yyzjWH2MWcs32A7HxUSxGG8fCyMn/KE=";
   };
 
-  buildInputs = lib.optional stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   nativeBuildInputs = [
     protobuf
     rustPlatform.bindgenHook
-  ] ++ lib.optionals stdenv.isDarwin [ xcodebuild ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcodebuild ];
 
   env.BORING_BSSL_PATH = "${boringssl-wrapper}";
 
diff --git a/pkgs/by-name/li/libspatialindex/package.nix b/pkgs/by-name/li/libspatialindex/package.nix
index ead9fe2b09e0..c420532351d9 100644
--- a/pkgs/by-name/li/libspatialindex/package.nix
+++ b/pkgs/by-name/li/libspatialindex/package.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation (finalAttrs: {
     patchShebangs test/
   '';
 
-  nativeBuildInputs = [ cmake ] ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+  nativeBuildInputs = [ cmake ] ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   cmakeFlags = [
     (lib.cmakeBool "BUILD_TESTING" finalAttrs.finalPackage.doCheck)
@@ -37,7 +37,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   doCheck = true;
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change "@rpath/libspatialindex.7.dylib" "$out/lib/libspatialindex.7.dylib" $out/lib/libspatialindex_c.dylib
   '';
 
diff --git a/pkgs/by-name/li/libtapi/package.nix b/pkgs/by-name/li/libtapi/package.nix
index b11de1756c90..0e4f3db7611e 100644
--- a/pkgs/by-name/li/libtapi/package.nix
+++ b/pkgs/by-name/li/libtapi/package.nix
@@ -97,7 +97,7 @@ stdenv.mkDerivation (finalAttrs: {
       substituteInPlace tapi/test/CMakeLists.txt \
         --replace-fail tapi-configs ""
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       # Remove Darwin-specific versioning flags.
       substituteInPlace tapi/tools/libtapi/CMakeLists.txt \
           --replace-fail '-current_version ''${DYLIB_VERSION} -compatibility_version 1' ""
diff --git a/pkgs/by-name/li/libtorrent-rasterbar-1_2_x/package.nix b/pkgs/by-name/li/libtorrent-rasterbar-1_2_x/package.nix
index 9de8a04c34da..f5b388ea6270 100644
--- a/pkgs/by-name/li/libtorrent-rasterbar-1_2_x/package.nix
+++ b/pkgs/by-name/li/libtorrent-rasterbar-1_2_x/package.nix
@@ -25,7 +25,7 @@ in stdenv.mkDerivation {
   nativeBuildInputs = [ automake autoconf libtool pkg-config ];
 
   buildInputs = [ boostPython openssl zlib python311 libiconv ncurses ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   preConfigure = "./autotool.sh";
 
@@ -48,7 +48,7 @@ in stdenv.mkDerivation {
     description = "C++ BitTorrent implementation focusing on efficiency and scalability";
     license = licenses.bsd3;
     maintainers = [ ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     platforms = platforms.unix;
   };
 }
diff --git a/pkgs/by-name/li/libtorrent-rasterbar-2_0_x/package.nix b/pkgs/by-name/li/libtorrent-rasterbar-2_0_x/package.nix
index 4c76d021a405..3f85048e4eb7 100644
--- a/pkgs/by-name/li/libtorrent-rasterbar-2_0_x/package.nix
+++ b/pkgs/by-name/li/libtorrent-rasterbar-2_0_x/package.nix
@@ -23,7 +23,7 @@ in stdenv.mkDerivation {
   nativeBuildInputs = [ cmake ];
 
   buildInputs = [ boostPython openssl zlib python3 ncurses ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   patches = [
     # provide distutils alternative for python 3.12
diff --git a/pkgs/by-name/li/libtoxcore/package.nix b/pkgs/by-name/li/libtoxcore/package.nix
index 6b3a2ffbcb01..6bad88293eb0 100644
--- a/pkgs/by-name/li/libtoxcore/package.nix
+++ b/pkgs/by-name/li/libtoxcore/package.nix
@@ -11,7 +11,7 @@
 , pkg-config
 }:
 
-let buildToxAV = !stdenv.isAarch32;
+let buildToxAV = !stdenv.hostPlatform.isAarch32;
 in stdenv.mkDerivation rec {
   pname = "libtoxcore";
   version = "0.2.19";
diff --git a/pkgs/by-name/li/libui-ng/package.nix b/pkgs/by-name/li/libui-ng/package.nix
index b5b0812d0188..cc308d86c842 100644
--- a/pkgs/by-name/li/libui-ng/package.nix
+++ b/pkgs/by-name/li/libui-ng/package.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-W9LnUBUKwx1x3+BEeUanisBGR2Q4dnbcMM5k8mCondM=";
   };
 
-  postPatch = lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) ''
+  postPatch = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) ''
     substituteInPlace meson.build --replace "'-arch', 'arm64'" ""
   '';
 
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs =
-    if stdenv.isDarwin then [
+    if stdenv.hostPlatform.isDarwin then [
       darwin.libobjc
       darwin.apple_sdk_11_0.Libsystem
       darwin.apple_sdk_11_0.frameworks.Cocoa
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
     ];
 
   mesonFlags = [
-    (lib.mesonBool "examples" (!stdenv.isDarwin))
+    (lib.mesonBool "examples" (!stdenv.hostPlatform.isDarwin))
   ];
 
   passthru.updateScript = unstableGitUpdater {
diff --git a/pkgs/by-name/li/licensure/package.nix b/pkgs/by-name/li/licensure/package.nix
index 8c7485ed0a43..97db16e1fcba 100644
--- a/pkgs/by-name/li/licensure/package.nix
+++ b/pkgs/by-name/li/licensure/package.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-Ywfn+6qdKD9CG2/xdHR2XDsj5LF5XPJ2+XR5H1o2iXk=";
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ openssl git gitls ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/by-name/li/lightning/package.nix b/pkgs/by-name/li/lightning/package.nix
index f85020499047..ea99a5873dc8 100644
--- a/pkgs/by-name/li/lightning/package.nix
+++ b/pkgs/by-name/li/lightning/package.nix
@@ -46,6 +46,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with lib.maintainers; [ AndersonTorres ];
     license = with lib.licenses; [ lgpl3Plus ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin; # failing tests
+    broken = stdenv.hostPlatform.isDarwin; # failing tests
   };
 })
diff --git a/pkgs/by-name/li/lightningcss/package.nix b/pkgs/by-name/li/lightningcss/package.nix
index 1af974647cba..cee6f869d3cc 100644
--- a/pkgs/by-name/li/lightningcss/package.nix
+++ b/pkgs/by-name/li/lightningcss/package.nix
@@ -48,6 +48,6 @@ rustPlatform.buildRustPackage rec {
     maintainers = with lib.maintainers; [ johnrtitor toastal ];
     mainProgram = "lightningcss";
     # never built on aarch64-linux since first introduction in nixpkgs
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/by-name/li/littlefs-fuse/package.nix b/pkgs/by-name/li/littlefs-fuse/package.nix
index a4150b8786b5..f9a769308491 100644
--- a/pkgs/by-name/li/littlefs-fuse/package.nix
+++ b/pkgs/by-name/li/littlefs-fuse/package.nix
@@ -24,6 +24,6 @@ stdenv.mkDerivation rec {
     mainProgram = "littlefs-fuse";
     inherit (fuse.meta) platforms;
     # fatal error: 'linux/fs.h' file not found
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/li/live-server/package.nix b/pkgs/by-name/li/live-server/package.nix
index 1c430cad3be0..c218628eb162 100644
--- a/pkgs/by-name/li/live-server/package.nix
+++ b/pkgs/by-name/li/live-server/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         CoreServices
diff --git a/pkgs/by-name/li/live555/package.nix b/pkgs/by-name/li/live555/package.nix
index c629ff54ea6f..c425b9743f89 100644
--- a/pkgs/by-name/li/live555/package.nix
+++ b/pkgs/by-name/li/live555/package.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation (finalAttrs: {
     })
   ];
 
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
   ];
 
@@ -74,9 +74,9 @@ stdenv.mkDerivation (finalAttrs: {
 
   configurePhase = let
     platform =
-      if stdenv.isLinux then
+      if stdenv.hostPlatform.isLinux then
         "linux"
-      else if stdenv.isDarwin then
+      else if stdenv.hostPlatform.isDarwin then
         "macosx-catalina"
       else
         throw "Unsupported platform: ${stdenv.hostPlatform.system}";
diff --git a/pkgs/by-name/ll/llama-cpp/package.nix b/pkgs/by-name/ll/llama-cpp/package.nix
index 6659122880e8..1a600461232a 100644
--- a/pkgs/by-name/ll/llama-cpp/package.nix
+++ b/pkgs/by-name/ll/llama-cpp/package.nix
@@ -20,7 +20,7 @@
 , blas
 
 , pkg-config
-, metalSupport ? stdenv.isDarwin && stdenv.isAarch64 && !openclSupport
+, metalSupport ? stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 && !openclSupport
 , vulkanSupport ? false
 , rpcSupport ? false
 , shaderc
@@ -98,7 +98,7 @@ effectiveStdenv.mkDerivation (finalAttrs: {
     autoAddDriverRunpath
   ];
 
-  buildInputs = optionals effectiveStdenv.isDarwin darwinBuildInputs
+  buildInputs = optionals effectiveStdenv.hostPlatform.isDarwin darwinBuildInputs
     ++ optionals cudaSupport cudaBuildInputs
     ++ optionals openclSupport [ clblast ]
     ++ optionals rocmSupport rocmBuildInputs
@@ -163,6 +163,6 @@ effectiveStdenv.mkDerivation (finalAttrs: {
     maintainers = with maintainers; [ dit7ya elohmeier philiptaron ];
     platforms = platforms.unix;
     badPlatforms = optionals (cudaSupport || openclSupport) lib.platforms.darwin;
-    broken = (metalSupport && !effectiveStdenv.isDarwin);
+    broken = (metalSupport && !effectiveStdenv.hostPlatform.isDarwin);
   };
 })
diff --git a/pkgs/by-name/ll/llm-ls/package.nix b/pkgs/by-name/ll/llm-ls/package.nix
index b1e759d29a55..c7a0aec58a22 100644
--- a/pkgs/by-name/ll/llm-ls/package.nix
+++ b/pkgs/by-name/ll/llm-ls/package.nix
@@ -42,7 +42,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs = [
     libiconv
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/lm/lmstudio/package.nix b/pkgs/by-name/lm/lmstudio/package.nix
index 3619f799738e..6c672338493d 100644
--- a/pkgs/by-name/lm/lmstudio/package.nix
+++ b/pkgs/by-name/lm/lmstudio/package.nix
@@ -16,7 +16,7 @@ let
     sourceProvenance = with lib.sourceTypes; [ binaryNativeCode ];
   };
 in
-  if stdenv.isDarwin
+  if stdenv.hostPlatform.isDarwin
     then callPackage ./darwin.nix { inherit pname version meta; }
     else callPackage ./linux.nix  { inherit pname version meta; }
 
diff --git a/pkgs/by-name/lo/localsend/package.nix b/pkgs/by-name/lo/localsend/package.nix
index 504500cad7aa..b2cb74054cc1 100644
--- a/pkgs/by-name/lo/localsend/package.nix
+++ b/pkgs/by-name/lo/localsend/package.nix
@@ -112,4 +112,4 @@ let
     ];
   };
 in
-if stdenv.isDarwin then darwin else linux
+if stdenv.hostPlatform.isDarwin then darwin else linux
diff --git a/pkgs/by-name/lo/logseq/package.nix b/pkgs/by-name/lo/logseq/package.nix
index 6c0e0dd0d7bc..06fc0d3fd0a3 100644
--- a/pkgs/by-name/lo/logseq/package.nix
+++ b/pkgs/by-name/lo/logseq/package.nix
@@ -33,21 +33,21 @@ in {
   src = fetchurl {
     inherit hash;
     url = "https://github.com/logseq/logseq/releases/download/${version}/logseq-${suffix}";
-    name = lib.optionalString stdenv.isLinux "logseq-${version}.AppImage";
+    name = lib.optionalString stdenv.hostPlatform.isLinux "logseq-${version}.AppImage";
   };
 
   nativeBuildInputs = [ makeWrapper ]
-    ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ]
-    ++ lib.optionals stdenv.isDarwin [ unzip ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ unzip ];
   buildInputs = [ stdenv.cc.cc.lib ];
 
-  dontUnpack = stdenv.isLinux;
+  dontUnpack = stdenv.hostPlatform.isLinux;
   dontConfigure = true;
   dontBuild = true;
 
   installPhase = ''
     runHook preInstall
-  '' + lib.optionalString stdenv.isLinux (
+  '' + lib.optionalString stdenv.hostPlatform.isLinux (
   let
    appimageContents = appimageTools.extract { inherit pname src version; };
   in
@@ -68,7 +68,7 @@ in {
     substituteInPlace $out/share/applications/logseq.desktop \
       --replace Exec=Logseq Exec=logseq \
       --replace Icon=Logseq Icon=logseq
-  '') + lib.optionalString stdenv.isDarwin ''
+  '') + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications/Logseq.app,bin}
     cp -R . $out/Applications/Logseq.app
     makeWrapper $out/Applications/Logseq.app/Contents/MacOS/Logseq $out/bin/logseq
@@ -76,7 +76,7 @@ in {
     runHook postInstall
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     # set the env "LOCAL_GIT_DIRECTORY" for dugite so that we can use the git in nixpkgs
     makeWrapper ${electron}/bin/electron $out/bin/logseq \
       --set "LOCAL_GIT_DIRECTORY" ${git} \
diff --git a/pkgs/by-name/lp/lpairs2/package.nix b/pkgs/by-name/lp/lpairs2/package.nix
index 99a74382569a..f4ae2ad7fa17 100644
--- a/pkgs/by-name/lp/lpairs2/package.nix
+++ b/pkgs/by-name/lp/lpairs2/package.nix
@@ -37,6 +37,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "lpairs2";
     maintainers = with lib.maintainers; [ AndersonTorres ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/lr/lrcget/package.nix b/pkgs/by-name/lr/lrcget/package.nix
index 40da20efbcce..0d77c2d09f22 100644
--- a/pkgs/by-name/lr/lrcget/package.nix
+++ b/pkgs/by-name/lr/lrcget/package.nix
@@ -69,11 +69,11 @@ rustPlatform.buildRustPackage rec {
       openssl
       gtk3
     ]
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       webkitgtk
       alsa-lib
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreAudio
       darwin.apple_sdk.frameworks.WebKit
     ];
diff --git a/pkgs/by-name/ls/lsd/package.nix b/pkgs/by-name/ls/lsd/package.nix
index 8cdf45c90d5a..9be5a2ef0dd6 100644
--- a/pkgs/by-name/ls/lsd/package.nix
+++ b/pkgs/by-name/ls/lsd/package.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
     pandoc
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   postInstall = ''
     pandoc --standalone --to man doc/lsd.md -o lsd.1
diff --git a/pkgs/by-name/ls/lsd2dsl/package.nix b/pkgs/by-name/ls/lsd2dsl/package.nix
index 4ab26b40a7c2..95663588edae 100644
--- a/pkgs/by-name/ls/lsd2dsl/package.nix
+++ b/pkgs/by-name/ls/lsd2dsl/package.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     cmake
     qt6.wrapQtAppsHook
-  ] ++ lib.optional stdenv.isLinux copyDesktopItems;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux copyDesktopItems;
 
   buildInputs = [
     boost
diff --git a/pkgs/by-name/lt/ltris/package.nix b/pkgs/by-name/lt/ltris/package.nix
index 82137b2fbec6..cb0da370cd8f 100644
--- a/pkgs/by-name/lt/ltris/package.nix
+++ b/pkgs/by-name/lt/ltris/package.nix
@@ -35,6 +35,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "ltris";
     maintainers = with lib.maintainers; [ AndersonTorres ];
     inherit (SDL.meta) platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/lz/lzlib/package.nix b/pkgs/by-name/lz/lzlib/package.nix
index b25f76871a0c..c44456bb45ca 100644
--- a/pkgs/by-name/lz/lzlib/package.nix
+++ b/pkgs/by-name/lz/lzlib/package.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation (finalAttrs: {
     # hash from release email
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile.in --replace '-Wl,--soname=' '-Wl,-install_name,$(out)/lib/'
   '';
 
diff --git a/pkgs/by-name/ma/maa-assistant-arknights/package.nix b/pkgs/by-name/ma/maa-assistant-arknights/package.nix
index b2c720f83551..7bb296ab611b 100644
--- a/pkgs/by-name/ma/maa-assistant-arknights/package.nix
+++ b/pkgs/by-name/ma/maa-assistant-arknights/package.nix
@@ -20,7 +20,7 @@ let
   sources = lib.importJSON ./pin.json;
 in
 # https://github.com/NixOS/nixpkgs/issues/314160
-(if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv).mkDerivation (finalAttr: {
+(if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv).mkDerivation (finalAttr: {
   pname = "maa-assistant-arknights" + lib.optionalString isBeta "-beta";
   version = if isBeta then sources.beta.version else sources.stable.version;
 
diff --git a/pkgs/by-name/ma/maa-cli/package.nix b/pkgs/by-name/ma/maa-cli/package.nix
index 4b01e3631b64..69c54cafcad9 100644
--- a/pkgs/by-name/ma/maa-cli/package.nix
+++ b/pkgs/by-name/ma/maa-cli/package.nix
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         Security
diff --git a/pkgs/by-name/ma/manga-tui/package.nix b/pkgs/by-name/ma/manga-tui/package.nix
index e5784c15399f..aafae4ab8464 100644
--- a/pkgs/by-name/ma/manga-tui/package.nix
+++ b/pkgs/by-name/ma/manga-tui/package.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage {
       openssl
       sqlite
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         Security
diff --git a/pkgs/by-name/ma/mapcache/package.nix b/pkgs/by-name/ma/mapcache/package.nix
index e0859a91a2fe..5d38ce3f0362 100644
--- a/pkgs/by-name/ma/mapcache/package.nix
+++ b/pkgs/by-name/ma/mapcache/package.nix
@@ -68,7 +68,7 @@ stdenv.mkDerivation rec {
     (lib.cmakeFeature "APACHE_MODULE_DIR" "${placeholder "out"}/modules")
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-std=c99";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-std=c99";
 
   meta = {
     description = "Server that implements tile caching to speed up access to WMS layers";
diff --git a/pkgs/by-name/ma/mariadb-galera/package.nix b/pkgs/by-name/ma/mariadb-galera/package.nix
index 0d85c9f3d56b..ebb3eb23c954 100644
--- a/pkgs/by-name/ma/mariadb-galera/package.nix
+++ b/pkgs/by-name/ma/mariadb-galera/package.nix
@@ -53,6 +53,6 @@ stdenv.mkDerivation rec {
     license = licenses.lgpl2Only;
     maintainers = with maintainers; [ izorkin ] ++ teams.helsinki-systems.members;
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/ma/markuplinkchecker/package.nix b/pkgs/by-name/ma/markuplinkchecker/package.nix
index f42ea53ff992..fac663fa9833 100644
--- a/pkgs/by-name/ma/markuplinkchecker/package.nix
+++ b/pkgs/by-name/ma/markuplinkchecker/package.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         Security
diff --git a/pkgs/by-name/ma/massdns/package.nix b/pkgs/by-name/ma/massdns/package.nix
index 9b90c674adb7..b47e162861ce 100644
--- a/pkgs/by-name/ma/massdns/package.nix
+++ b/pkgs/by-name/ma/massdns/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
     "PREFIX=$(out)"
     "PROJECT_FLAGS=-DMASSDNS_REVISION='\"v${version}\"'"
   ];
-  buildFlags = if stdenv.isLinux then "all" else "nolinux";
+  buildFlags = if stdenv.hostPlatform.isLinux then "all" else "nolinux";
 
   passthru.updateScript = nix-update-script { };
 
diff --git a/pkgs/by-name/ma/matrix-authentication-service/package.nix b/pkgs/by-name/ma/matrix-authentication-service/package.nix
index 501bc3e8e4fd..c6de3b3a0a09 100644
--- a/pkgs/by-name/ma/matrix-authentication-service/package.nix
+++ b/pkgs/by-name/ma/matrix-authentication-service/package.nix
@@ -50,7 +50,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     sqlite
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.CoreFoundation
     darwin.apple_sdk_11_0.frameworks.Security
     darwin.apple_sdk_11_0.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/ma/matrix-commander-rs/package.nix b/pkgs/by-name/ma/matrix-commander-rs/package.nix
index 6215f7ddc69c..78e0abebe88e 100644
--- a/pkgs/by-name/ma/matrix-commander-rs/package.nix
+++ b/pkgs/by-name/ma/matrix-commander-rs/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
     ];
diff --git a/pkgs/by-name/ma/matugen/package.nix b/pkgs/by-name/ma/matugen/package.nix
index c4dffa14bc95..b147e74c2294 100644
--- a/pkgs/by-name/ma/matugen/package.nix
+++ b/pkgs/by-name/ma/matugen/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-pD1NKUJmvMTnYKWjRrGnvbA0zVvGpWRIlf/9ovP9Jq4=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/ma/maturin/package.nix b/pkgs/by-name/ma/maturin/package.nix
index 91ed83ea9715..fa7eb781c1e4 100644
--- a/pkgs/by-name/ma/maturin/package.nix
+++ b/pkgs/by-name/ma/maturin/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-ik6kFS66umiHf0M1fE+6++zpZF4gJrN9LQ2l+vi9SSY=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     libiconv
   ];
diff --git a/pkgs/by-name/mc/mcumgr-client/package.nix b/pkgs/by-name/mc/mcumgr-client/package.nix
index f8909e8e2018..db03704cbf26 100644
--- a/pkgs/by-name/mc/mcumgr-client/package.nix
+++ b/pkgs/by-name/mc/mcumgr-client/package.nix
@@ -27,8 +27,8 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs =
-    lib.optionals stdenv.isLinux [ udev ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.IOKit ];
+    lib.optionals stdenv.hostPlatform.isLinux [ udev ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.IOKit ];
 
   meta = with lib; {
     description = "Client for mcumgr commands";
diff --git a/pkgs/by-name/md/md-tui/package.nix b/pkgs/by-name/md/md-tui/package.nix
index 8c74b4b29580..e781cd8a4f8d 100644
--- a/pkgs/by-name/md/md-tui/package.nix
+++ b/pkgs/by-name/md/md-tui/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.Security
diff --git a/pkgs/by-name/md/mdbook-alerts/package.nix b/pkgs/by-name/md/mdbook-alerts/package.nix
index 30f4cc3f6356..a36373848da1 100644
--- a/pkgs/by-name/md/mdbook-alerts/package.nix
+++ b/pkgs/by-name/md/mdbook-alerts/package.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage {
 
   cargoHash = "sha256-nzVvktweqrow7P/I8DhDoVJNj1COCeEhx6HLY536hYE=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   meta = {
     description = "Preprocessor for mdbook to support the inclusion of Markdown alerts";
diff --git a/pkgs/by-name/md/mdbook-d2/package.nix b/pkgs/by-name/md/mdbook-d2/package.nix
index 8b30e7fea45c..8b8a032654df 100644
--- a/pkgs/by-name/md/mdbook-d2/package.nix
+++ b/pkgs/by-name/md/mdbook-d2/package.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-lZ92vvRYXEBMx6ka8RP1wXctf73QNp5rNE8n7O96AEc=";
   doCheck = false;
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.CoreServices
   ];
diff --git a/pkgs/by-name/md/mdbook/package.nix b/pkgs/by-name/md/mdbook/package.nix
index aa8ff3dec363..4734394cd7e7 100644
--- a/pkgs/by-name/md/mdbook/package.nix
+++ b/pkgs/by-name/md/mdbook/package.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
     installShellCompletion --cmd mdbook \
diff --git a/pkgs/by-name/me/mediainfo-gui/package.nix b/pkgs/by-name/me/mediainfo-gui/package.nix
index 3c9da25e33a5..b649afd83abe 100644
--- a/pkgs/by-name/me/mediainfo-gui/package.nix
+++ b/pkgs/by-name/me/mediainfo-gui/package.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkg-config ];
 
   buildInputs = [ libmediainfo wxGTK32 desktop-file-utils libSM imagemagick ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   sourceRoot = "MediaInfo/Project/GNU/GUI";
 
diff --git a/pkgs/by-name/me/megatools/package.nix b/pkgs/by-name/me/megatools/package.nix
index 2fbd7e88466b..6e744f5d4b89 100644
--- a/pkgs/by-name/me/megatools/package.nix
+++ b/pkgs/by-name/me/megatools/package.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     curl
     glib
-  ] ++ lib.optionals stdenv.isLinux [ fuse ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ fuse ];
 
   enableParallelBuilding = true;
   strictDeps = true;
diff --git a/pkgs/by-name/me/meli/package.nix b/pkgs/by-name/me/meli/package.nix
index a9116aa6546f..0fc8b082ca31 100644
--- a/pkgs/by-name/me/meli/package.nix
+++ b/pkgs/by-name/me/meli/package.nix
@@ -87,7 +87,7 @@ rustPlatform.buildRustPackage rec {
   ];
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Terminal e-mail client and e-mail client library";
     mainProgram = "meli";
     homepage = "https://meli.delivery";
diff --git a/pkgs/by-name/me/melonDS/package.nix b/pkgs/by-name/me/melonDS/package.nix
index bb4783e966a9..e6d1f3928842 100644
--- a/pkgs/by-name/me/melonDS/package.nix
+++ b/pkgs/by-name/me/melonDS/package.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation (finalAttrs: {
       qtmultimedia
       zstd
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       wayland
       qtwayland
     ];
@@ -64,7 +64,7 @@ stdenv.mkDerivation (finalAttrs: {
   strictDeps = true;
 
   qtWrapperArgs =
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       "--prefix LD_LIBRARY_PATH : ${
         lib.makeLibraryPath [
           libpcap
@@ -72,7 +72,7 @@ stdenv.mkDerivation (finalAttrs: {
         ]
       }"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "--prefix DYLD_LIBRARY_PATH : ${lib.makeLibraryPath [ libpcap ]}"
     ];
 
diff --git a/pkgs/by-name/me/memtest_vulkan/package.nix b/pkgs/by-name/me/memtest_vulkan/package.nix
index ee2001019716..cdbcc7982b83 100644
--- a/pkgs/by-name/me/memtest_vulkan/package.nix
+++ b/pkgs/by-name/me/memtest_vulkan/package.nix
@@ -32,6 +32,6 @@ rustPlatform.buildRustPackage rec {
     mainProgram = "memtest_vulkan";
     broken =
       stdenv.system == "aarch64-linux" # error: linker `aarch64-linux-gnu-gcc` not found
-      || stdenv.isDarwin; # Can't find Vulkan; might work though?
+      || stdenv.hostPlatform.isDarwin; # Can't find Vulkan; might work though?
   };
 }
diff --git a/pkgs/by-name/me/merkaartor/package.nix b/pkgs/by-name/me/merkaartor/package.nix
index 198992988741..8d3abd715a43 100644
--- a/pkgs/by-name/me/merkaartor/package.nix
+++ b/pkgs/by-name/me/merkaartor/package.nix
@@ -10,7 +10,7 @@
   qt5,
   withGeoimage ? true,
   exiv2,
-  withGpsdlib ? (!stdenv.isDarwin),
+  withGpsdlib ? (!stdenv.hostPlatform.isDarwin),
   gpsd,
   withLibproxy ? false,
   libproxy,
@@ -58,7 +58,7 @@ stdenv.mkDerivation rec {
     (lib.cmakeBool "ZBAR" withZbar)
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications,bin}
     mv $out/merkaartor.app $out/Applications
     # Prevent wrapping, otherwise plugins will not be loaded
diff --git a/pkgs/by-name/me/meson/package.nix b/pkgs/by-name/me/meson/package.nix
index d817c63708be..db59daf3a6a8 100644
--- a/pkgs/by-name/me/meson/package.nix
+++ b/pkgs/by-name/me/meson/package.nix
@@ -108,7 +108,7 @@ python3.pkgs.buildPythonApplication rec {
   checkInputs = [
     zlib
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Cocoa
     Foundation
@@ -116,7 +116,7 @@ python3.pkgs.buildPythonApplication rec {
     OpenAL
     OpenGL
     openldap
-  ] ++ lib.optionals (stdenv.cc.isClang && !stdenv.isDarwin) [
+  ] ++ lib.optionals (stdenv.cc.isClang && !stdenv.hostPlatform.isDarwin) [
     # https://github.com/mesonbuild/meson/blob/bd3f1b2e0e70ef16dfa4f441686003212440a09b/test%20cases/common/184%20openmp/meson.build
     llvmPackages.openmp
     # https://github.com/mesonbuild/meson/blob/1670fca36fcb1a4fe4780e96731e954515501a35/test%20cases/frameworks/29%20blocks/meson.build
@@ -144,10 +144,10 @@ python3.pkgs.buildPythonApplication rec {
     ''test cases/linuxlike/14 static dynamic linkage''
     # Nixpkgs cctools does not have bitcode support.
     ''test cases/osx/7 bitcode''
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # requires llvmPackages.openmp, creating cyclic dependency
     ''test cases/common/184 openmp''
-  ] ++ lib.optionals stdenv.isFreeBSD [
+  ] ++ lib.optionals stdenv.hostPlatform.isFreeBSD [
     # pch doesn't work quite right on FreeBSD, I think
     ''test cases/common/13 pch''
   ]))
diff --git a/pkgs/by-name/me/mesonlsp/package.nix b/pkgs/by-name/me/mesonlsp/package.nix
index 70a7417ce958..e1e0a3b771c1 100644
--- a/pkgs/by-name/me/mesonlsp/package.nix
+++ b/pkgs/by-name/me/mesonlsp/package.nix
@@ -52,11 +52,11 @@ stdenv.mkDerivation (finalAttrs: {
       libpkgconf
       nlohmann_json
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libossp_uuid
       pkgsStatic.fmt
     ]
-    ++ lib.optionals stdenv.isLinux [ libuuid ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libuuid ];
 
   mesonFlags = [ "-Dbenchmarks=false" ];
 
diff --git a/pkgs/by-name/me/metronome/package.nix b/pkgs/by-name/me/metronome/package.nix
index f21a941a9e37..6c75f65dd3d7 100644
--- a/pkgs/by-name/me/metronome/package.nix
+++ b/pkgs/by-name/me/metronome/package.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
     gst_all_1.gstreamer
     gst_all_1.gst-plugins-base
     gst_all_1.gst-plugins-bad
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/by-name/mi/miru/package.nix b/pkgs/by-name/mi/miru/package.nix
index 48f990e902c1..c842e475ca1a 100644
--- a/pkgs/by-name/mi/miru/package.nix
+++ b/pkgs/by-name/mi/miru/package.nix
@@ -36,7 +36,7 @@ let
     updateScript = ./update.sh;
   };
 in
-if stdenv.isDarwin then
+if stdenv.hostPlatform.isDarwin then
   callPackage ./darwin.nix {
     inherit
       pname
diff --git a/pkgs/by-name/mi/mistral-rs/package.nix b/pkgs/by-name/mi/mistral-rs/package.nix
index 9f4bf825664f..35db87eb173a 100644
--- a/pkgs/by-name/mi/mistral-rs/package.nix
+++ b/pkgs/by-name/mi/mistral-rs/package.nix
@@ -63,7 +63,7 @@ let
 
   metalSupport =
     assert accelIsValid;
-    (acceleration == "metal") || (stdenv.isDarwin && stdenv.isAarch64 && (acceleration == null));
+    (acceleration == "metal") || (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 && (acceleration == null));
 
   darwinBuildInputs =
     with darwin.apple_sdk.frameworks;
@@ -114,7 +114,7 @@ rustPlatform.buildRustPackage rec {
       cudaPackages.libcurand
     ]
     ++ lib.optionals mklSupport [ mkl ]
-    ++ lib.optionals stdenv.isDarwin darwinBuildInputs;
+    ++ lib.optionals stdenv.hostPlatform.isDarwin darwinBuildInputs;
 
   cargoBuildFlags =
     [
@@ -125,7 +125,7 @@ rustPlatform.buildRustPackage rec {
     ]
     ++ lib.optionals cudaSupport [ "--features=cuda" ]
     ++ lib.optionals mklSupport [ "--features=mkl" ]
-    ++ lib.optionals (stdenv.isDarwin && metalSupport) [ "--features=metal" ];
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && metalSupport) [ "--features=metal" ];
 
   env =
     {
@@ -186,7 +186,7 @@ rustPlatform.buildRustPackage rec {
       withMkl = lib.optionalAttrs (stdenv.hostPlatform == "x86_64-linux") (
         mistral-rs.override { acceleration = "mkl"; }
       );
-      withCuda = lib.optionalAttrs stdenv.isLinux (mistral-rs.override { acceleration = "cuda"; });
+      withCuda = lib.optionalAttrs stdenv.hostPlatform.isLinux (mistral-rs.override { acceleration = "cuda"; });
       withMetal = lib.optionalAttrs (stdenv.hostPlatform == "aarch64-darwin") (
         mistral-rs.override { acceleration = "metal"; }
       );
diff --git a/pkgs/by-name/ml/mlx42/package.nix b/pkgs/by-name/ml/mlx42/package.nix
index 1f485d42aab9..9c22c20144d9 100644
--- a/pkgs/by-name/ml/mlx42/package.nix
+++ b/pkgs/by-name/ml/mlx42/package.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ cmake ];
 
   buildInputs = [ glfw ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ OpenGL Cocoa IOKit ]);
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ OpenGL Cocoa IOKit ]);
 
   cmakeFlags = [ "-DDEBUG=${toString enableDebug}" ];
 
diff --git a/pkgs/by-name/mo/modrinth-app-unwrapped/package.nix b/pkgs/by-name/mo/modrinth-app-unwrapped/package.nix
index 46874c6b7b77..ca32e25fb03a 100644
--- a/pkgs/by-name/mo/modrinth-app-unwrapped/package.nix
+++ b/pkgs/by-name/mo/modrinth-app-unwrapped/package.nix
@@ -85,11 +85,11 @@ rustPlatform.buildRustPackage {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       libsoup
       webkitgtk
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         AppKit
@@ -149,13 +149,13 @@ rustPlatform.buildRustPackage {
     ''
       runHook preInstall
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p "$out"/bin
       cp -r target/release/bundle/macos "$out"/Applications
       mv "$out"/Applications/Modrinth\ App.app/Contents/MacOS/Modrinth\ App "$out"/bin/modrinth-app
       ln -s "$out"/bin/modrinth-app "$out"/Applications/Modrinth\ App.app/Contents/MacOS/Modrinth\ App
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       cp -r target/release/bundle/"$tauriBundle"/*/data/usr "$out"
       desktop-file-edit \
         --set-comment "Modrinth's game launcher" \
@@ -189,6 +189,6 @@ rustPlatform.buildRustPackage {
     maintainers = with lib.maintainers; [ getchoo ];
     platforms = lib.platforms.linux ++ lib.platforms.darwin;
     # this builds on architectures like aarch64, but the launcher itself does not support them yet
-    broken = !stdenv.isx86_64;
+    broken = !stdenv.hostPlatform.isx86_64;
   };
 }
diff --git a/pkgs/by-name/mo/modrinth-app/package.nix b/pkgs/by-name/mo/modrinth-app/package.nix
index 12e13017ad33..c92b6319d5a5 100644
--- a/pkgs/by-name/mo/modrinth-app/package.nix
+++ b/pkgs/by-name/mo/modrinth-app/package.nix
@@ -37,7 +37,7 @@ symlinkJoin rec {
     wrapGAppsHook3
   ];
 
-  runtimeDependencies = lib.optionalString stdenv.isLinux (lib.makeLibraryPath [
+  runtimeDependencies = lib.optionalString stdenv.hostPlatform.isLinux (lib.makeLibraryPath [
     addDriverRunpath.driverLink
     flite # narrator support
 
@@ -57,7 +57,7 @@ symlinkJoin rec {
   postBuild = ''
     gappsWrapperArgs+=(
       --prefix PATH : ${lib.makeSearchPath "bin/java" jdks}
-      ${lib.optionalString stdenv.isLinux ''
+      ${lib.optionalString stdenv.hostPlatform.isLinux ''
         --prefix PATH : ${lib.makeBinPath [xorg.xrandr]}
         --set LD_LIBRARY_PATH $runtimeDependencies
       ''}
diff --git a/pkgs/by-name/mo/mold/package.nix b/pkgs/by-name/mo/mold/package.nix
index 383abc8f77b8..dbd6fbd6a2a4 100644
--- a/pkgs/by-name/mo/mold/package.nix
+++ b/pkgs/by-name/mo/mold/package.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
     tbb
     zlib
     zstd
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     mimalloc
   ];
 
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
     "-DMOLD_USE_SYSTEM_TBB:BOOL=ON"
   ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-faligned-allocation"
   ]);
 
@@ -91,7 +91,7 @@ stdenv.mkDerivation rec {
       in
       {
         version = testers.testVersion { package = mold; };
-      } // lib.optionalAttrs stdenv.isLinux {
+      } // lib.optionalAttrs stdenv.hostPlatform.isLinux {
         adapter-gcc = helloTest "adapter-gcc" (hello.override (old: { stdenv = useMoldLinker gccStdenv; }));
         adapter-llvm = helloTest "adapter-llvm" (hello.override (old: { stdenv = useMoldLinker clangStdenv; }));
         wrapped = helloTest "wrapped" (hello.overrideAttrs (previousAttrs: {
diff --git a/pkgs/by-name/mo/mollysocket/package.nix b/pkgs/by-name/mo/mollysocket/package.nix
index c5772f2edc4b..6c9e18cc8f15 100644
--- a/pkgs/by-name/mo/mollysocket/package.nix
+++ b/pkgs/by-name/mo/mollysocket/package.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/mo/mongodb-ce/package.nix b/pkgs/by-name/mo/mongodb-ce/package.nix
index d3dc490bdcfe..a7ee195c9874 100644
--- a/pkgs/by-name/mo/mongodb-ce/package.nix
+++ b/pkgs/by-name/mo/mongodb-ce/package.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation (finalAttrs: {
       or (throw "unsupported system: ${stdenv.hostPlatform.system}")
   );
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
   dontStrip = true;
 
   buildInputs = [
diff --git a/pkgs/by-name/mo/moonlight-qt/package.nix b/pkgs/by-name/mo/moonlight-qt/package.nix
index a0ca66b61e64..62a3b556a3a3 100644
--- a/pkgs/by-name/mo/moonlight-qt/package.nix
+++ b/pkgs/by-name/mo/moonlight-qt/package.nix
@@ -32,7 +32,7 @@ let
     Cocoa
     VideoToolbox
     ;
-  stdenv' = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
 in
 
 stdenv'.mkDerivation rec {
@@ -64,7 +64,7 @@ stdenv'.mkDerivation rec {
 
   buildInputs =
     [
-      (SDL2.override { drmSupport = stdenv.isLinux; })
+      (SDL2.override { drmSupport = stdenv.hostPlatform.isLinux; })
       SDL2_ttf
       ffmpeg
       libopus
@@ -73,7 +73,7 @@ stdenv'.mkDerivation rec {
       qt6.qtsvg
       openssl
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       alsa-lib
       libpulseaudio
       libva
@@ -83,7 +83,7 @@ stdenv'.mkDerivation rec {
       wayland
       libdrm
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       AVFoundation
       AppKit
       AudioUnit
@@ -93,7 +93,7 @@ stdenv'.mkDerivation rec {
 
   qmakeFlags = [ "CONFIG+=disable-prebuilts" ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/Applications $out/bin
     mv app/Moonlight.app $out/Applications
     ln -s $out/Applications/Moonlight.app/Contents/MacOS/Moonlight $out/bin/moonlight
diff --git a/pkgs/by-name/mp/mpris-notifier/package.nix b/pkgs/by-name/mp/mpris-notifier/package.nix
index bf8bac180fc7..3b3016a1d248 100644
--- a/pkgs/by-name/mp/mpris-notifier/package.nix
+++ b/pkgs/by-name/mp/mpris-notifier/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-f8BCnjgv7OLWQ/2X3dTUuAarCl+u+4CRARSQsO+09zE=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/mq/mqtt-explorer/package.nix b/pkgs/by-name/mq/mqtt-explorer/package.nix
index dec432204622..2aa7a6ba6891 100644
--- a/pkgs/by-name/mq/mqtt-explorer/package.nix
+++ b/pkgs/by-name/mq/mqtt-explorer/package.nix
@@ -51,13 +51,13 @@ stdenv.mkDerivation rec {
     typescript
     fixup-yarn-lock
     makeWrapper
-  ] ++ lib.optionals (!stdenv.isDarwin) [ copyDesktopItems ];
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ copyDesktopItems ];
 
   env.ELECTRON_SKIP_BINARY_DOWNLOAD = "1";
 
   # disable code signing on macos
   # https://github.com/electron-userland/electron-builder/blob/77f977435c99247d5db395895618b150f5006e8f/docs/code-signing.md#how-to-disable-code-signing-during-the-build-process-on-macos
-  postConfigure = lib.optionalString stdenv.isDarwin ''
+  postConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export CSC_IDENTITY_AUTO_DISCOVERY=false
   '';
 
@@ -106,7 +106,7 @@ stdenv.mkDerivation rec {
   installPhase = ''
     runHook preInstall
 
-    ${lib.optionalString (!stdenv.isDarwin) ''
+    ${lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       mkdir -p "$out/share/mqtt-explorer"/{app,icons/hicolor}
 
       cp -r build/*-unpacked/{locales,resources{,.pak}} "$out/share/mqtt-explorer/app"
@@ -128,7 +128,7 @@ stdenv.mkDerivation rec {
         --inherit-argv0
     ''}
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/{Applications,bin}
       mv "build/mac/MQTT Explorer.app" $out/Applications
 
diff --git a/pkgs/by-name/mq/mqttui/package.nix b/pkgs/by-name/mq/mqttui/package.nix
index e4bbd4974f31..d2617f51e1dd 100644
--- a/pkgs/by-name/mq/mqttui/package.nix
+++ b/pkgs/by-name/mq/mqttui/package.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
     ln -sf ${./Cargo.lock} Cargo.lock
   '';
 
-  buildInputs = lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
 
   meta = with lib; {
     description = "Terminal client for MQTT";
diff --git a/pkgs/by-name/mu/mujoco/package.nix b/pkgs/by-name/mu/mujoco/package.nix
index 416de20426cf..291fe8e546cd 100644
--- a/pkgs/by-name/mu/mujoco/package.nix
+++ b/pkgs/by-name/mu/mujoco/package.nix
@@ -191,6 +191,6 @@ stdenv.mkDerivation rec {
       samuela
       tmplt
     ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/mu/mullvad-browser/package.nix b/pkgs/by-name/mu/mullvad-browser/package.nix
index 42cb084e0588..b4662af7b598 100644
--- a/pkgs/by-name/mu/mullvad-browser/package.nix
+++ b/pkgs/by-name/mu/mullvad-browser/package.nix
@@ -29,10 +29,10 @@
 , pciutils
 , zlib
 
-, libnotifySupport ? stdenv.isLinux
+, libnotifySupport ? stdenv.hostPlatform.isLinux
 , libnotify
 
-, waylandSupport ? stdenv.isLinux
+, waylandSupport ? stdenv.hostPlatform.isLinux
 , libxkbcommon
 , libdrm
 , libGL
diff --git a/pkgs/by-name/mu/mumps/package.nix b/pkgs/by-name/mu/mumps/package.nix
index 17c005946f57..7d0e3e154cb4 100644
--- a/pkgs/by-name/mu/mumps/package.nix
+++ b/pkgs/by-name/mu/mumps/package.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation (finalAttrs: {
       # https://github.com/coin-or-tools/ThirdParty-Mumps/blob/stable/3.0/get.Mumps#L66
       cp libseq/mpi.h libseq/mumps_mpi.h
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace src/Makefile --replace-fail \
         "-Wl,\''$(SONAME),libmumps_common" \
         "-Wl,-install_name,$out/lib/libmumps_common"
@@ -43,7 +43,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   makeFlags =
-    lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isDarwin [
       "SONAME="
       "LIBEXT_SHARED=.dylib"
     ]
@@ -73,7 +73,7 @@ stdenv.mkDerivation (finalAttrs: {
     scotch
   ];
 
-  preFixup = lib.optionalString stdenv.isDarwin ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool \
       -change    libmpiseq.dylib \
         $out/lib/libmpiseq.dylib \
diff --git a/pkgs/by-name/mu/muon/package.nix b/pkgs/by-name/mu/muon/package.nix
index a479dd23d29b..0e38f4f8e993 100644
--- a/pkgs/by-name/mu/muon/package.nix
+++ b/pkgs/by-name/mu/muon/package.nix
@@ -129,7 +129,7 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.gpl3Only;
     maintainers = with maintainers; [ AndersonTorres ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # typical `ar failure`
+    broken = stdenv.hostPlatform.isDarwin; # typical `ar failure`
     mainProgram = "muon";
   };
 })
diff --git a/pkgs/by-name/mu/music-player/package.nix b/pkgs/by-name/mu/music-player/package.nix
index 776486e6928c..2f2a54d36fca 100644
--- a/pkgs/by-name/mu/music-player/package.nix
+++ b/pkgs/by-name/mu/music-player/package.nix
@@ -28,15 +28,15 @@ rustPlatform.buildRustPackage rec {
       protobuf
       rustPlatform.bindgenHook
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       pkg-config
     ];
 
   buildInputs =
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       alsa-lib
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.AudioUnit
     ];
 
diff --git a/pkgs/by-name/mu/musikcube/package.nix b/pkgs/by-name/mu/musikcube/package.nix
index 8eb5536f39ba..8c59e9833985 100644
--- a/pkgs/by-name/mu/musikcube/package.nix
+++ b/pkgs/by-name/mu/musikcube/package.nix
@@ -72,11 +72,11 @@ stdenv.mkDerivation (finalAttrs: {
       taglib
     ]
     ++ lib.optionals systemdSupport [ systemd ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       alsa-lib
       pulseaudio
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         Cocoa
@@ -89,7 +89,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   cmakeFlags = [ "-DDISABLE_STRIP=true" ];
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -add_rpath $out/share/musikcube $out/share/musikcube/musikcube
     install_name_tool -add_rpath $out/share/musikcube $out/share/musikcube/musikcubed
   '';
diff --git a/pkgs/by-name/my/mycelium/package.nix b/pkgs/by-name/my/mycelium/package.nix
index 266448a438eb..2669ff84d923 100644
--- a/pkgs/by-name/my/mycelium/package.nix
+++ b/pkgs/by-name/my/mycelium/package.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   nativeBuildInputs = [ versionCheckHook ];
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/my/mysql84/package.nix b/pkgs/by-name/my/mysql84/package.nix
index b245404420d7..1c4d655efd4b 100644
--- a/pkgs/by-name/my/mysql84/package.nix
+++ b/pkgs/by-name/my/mysql84/package.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   nativeBuildInputs = [ bison cmake pkg-config ]
-    ++ lib.optionals (!stdenv.isDarwin) [ rpcsvc-proto ];
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ rpcsvc-proto ];
 
   patches = [
     ./no-force-outline-atomics.patch # Do not force compilers to turn on -moutline-atomics switch
@@ -28,9 +28,9 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     (curl.override { inherit openssl; }) icu libedit libevent lz4 ncurses openssl protobuf_21 re2 readline zlib
     zstd libfido2
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     numactl libtirpc
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools darwin.apple_sdk.frameworks.CoreServices darwin.developer_cmds darwin.DarwinTools
   ];
 
diff --git a/pkgs/by-name/n8/n8n/package.nix b/pkgs/by-name/n8/n8n/package.nix
index a95b3199b69b..0a57d8818d15 100644
--- a/pkgs/by-name/n8/n8n/package.nix
+++ b/pkgs/by-name/n8/n8n/package.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation (finalAttrs: {
     node-gyp # required to build sqlite3 bindings
     cacert # required for rustls-native-certs (dependency of turbo build tool)
     makeWrapper
-  ] ++ lib.optional stdenv.isDarwin [ xcbuild ];
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin [ xcbuild ];
 
   buildInputs = [
     nodejs
diff --git a/pkgs/by-name/na/naja/package.nix b/pkgs/by-name/na/naja/package.nix
index ba20cacf8d0c..a342c091f708 100644
--- a/pkgs/by-name/na/naja/package.nix
+++ b/pkgs/by-name/na/naja/package.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation {
       (lib.cmakeBool "CPPTRACE_USE_EXTERNAL_LIBDWARF" true)
       (lib.cmakeBool "CPPTRACE_USE_EXTERNAL_ZSTD" true)
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       (lib.cmakeFeature "CMAKE_OSX_DEPLOYMENT_TARGET" "10.14") # For aligned allocation
     ];
 
diff --git a/pkgs/by-name/na/naps2/package.nix b/pkgs/by-name/na/naps2/package.nix
index 728445a1da2e..93161f889efd 100644
--- a/pkgs/by-name/na/naps2/package.nix
+++ b/pkgs/by-name/na/naps2/package.nix
@@ -55,7 +55,7 @@ buildDotnetModule rec {
     maintainers = with lib.maintainers; [ eliandoran ];
     platforms = lib.platforms.linux;
     mainProgram = "naps2";
-    broken = stdenv.isAarch64;  # Google.Protobuf.Tools dependency fails to build.
+    broken = stdenv.hostPlatform.isAarch64;  # Google.Protobuf.Tools dependency fails to build.
   };
 
 }
diff --git a/pkgs/by-name/na/navidrome/package.nix b/pkgs/by-name/na/navidrome/package.nix
index 971471041b69..112523e1fb74 100644
--- a/pkgs/by-name/na/navidrome/package.nix
+++ b/pkgs/by-name/na/navidrome/package.nix
@@ -82,6 +82,6 @@ buildGoModule rec {
     sourceProvenance = with lib.sourceTypes; [ fromSource ];
     maintainers = with lib.maintainers; [ aciceri squalus ];
     # Broken on Darwin: sandbox-exec: pattern serialization length exceeds maximum (NixOS/nix#4119)
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/ne/neovide/package.nix b/pkgs/by-name/ne/neovide/package.nix
index 232bc4664eea..dc49789cf5df 100644
--- a/pkgs/by-name/ne/neovide/package.nix
+++ b/pkgs/by-name/ne/neovide/package.nix
@@ -20,7 +20,7 @@
 , darwin
 , libglvnd
 , libxkbcommon
-, enableWayland ? stdenv.isLinux
+, enableWayland ? stdenv.hostPlatform.isLinux
 , wayland
 }:
 
@@ -66,7 +66,7 @@ rustPlatform.buildRustPackage.override { stdenv = clangStdenv; } rec {
     pkg-config
     python3 # skia
     removeReferencesTo
-  ] ++ lib.optionals stdenv.isDarwin [ xcbuild ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcbuild ];
 
   nativeCheckInputs = [ neovim ];
 
@@ -74,7 +74,7 @@ rustPlatform.buildRustPackage.override { stdenv = clangStdenv; } rec {
     SDL2
     fontconfig
     rustPlatform.bindgenHook
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
   ];
 
@@ -96,11 +96,11 @@ rustPlatform.buildRustPackage.override { stdenv = clangStdenv; } rec {
         --prefix LD_LIBRARY_PATH : ${libPath}
     '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     cp -r extra/osx/Neovide.app $out/Applications
     ln -s $out/bin $out/Applications/Neovide.app/Contents/MacOS
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     for n in 16x16 32x32 48x48 256x256; do
       install -m444 -D "assets/neovide-$n.png" \
         "$out/share/icons/hicolor/$n/apps/neovide.png"
diff --git a/pkgs/by-name/ne/neovim-qt/package.nix b/pkgs/by-name/ne/neovim-qt/package.nix
index aa7b2607fb70..6251559eba27 100644
--- a/pkgs/by-name/ne/neovim-qt/package.nix
+++ b/pkgs/by-name/ne/neovim-qt/package.nix
@@ -6,7 +6,7 @@ in
 libsForQt5.mkDerivation {
   pname = "neovim-qt";
   version = unwrapped.version;
-  buildCommand = if stdenv.isDarwin then ''
+  buildCommand = if stdenv.hostPlatform.isDarwin then ''
     mkdir -p $out/Applications
     cp -r ${unwrapped}/bin/nvim-qt.app $out/Applications
 
diff --git a/pkgs/by-name/ne/neovim-remote/package.nix b/pkgs/by-name/ne/neovim-remote/package.nix
index ffb686abc8f1..e0f88180542f 100644
--- a/pkgs/by-name/ne/neovim-remote/package.nix
+++ b/pkgs/by-name/ne/neovim-remote/package.nix
@@ -35,7 +35,7 @@ with python3.pkgs; buildPythonApplication rec {
     pytestCheckHook
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   preCheck = ''
     export HOME="$(mktemp -d)"
diff --git a/pkgs/by-name/ne/neovim-unwrapped/package.nix b/pkgs/by-name/ne/neovim-unwrapped/package.nix
index c66597da3ae8..b37ba7fd2d94 100644
--- a/pkgs/by-name/ne/neovim-unwrapped/package.nix
+++ b/pkgs/by-name/ne/neovim-unwrapped/package.nix
@@ -16,7 +16,7 @@
 }:
 stdenv.mkDerivation (finalAttrs:
   let
-  nvim-lpeg-dylib = luapkgs: if stdenv.isDarwin
+  nvim-lpeg-dylib = luapkgs: if stdenv.hostPlatform.isDarwin
     then (luapkgs.lpeg.overrideAttrs (oa: {
       preConfigure = ''
         # neovim wants clang .dylib
@@ -33,7 +33,7 @@ stdenv.mkDerivation (finalAttrs:
       nativeBuildInputs =
         oa.nativeBuildInputs
         ++ (
-          lib.optional stdenv.isDarwin fixDarwinDylibNames
+          lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames
         );
     }))
     else luapkgs.lpeg;
@@ -104,7 +104,7 @@ in {
       neovimLuaEnv
       tree-sitter
       unibilium
-    ] ++ lib.optionals stdenv.isDarwin [ libiconv CoreServices ]
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv CoreServices ]
       ++ lib.optionals finalAttrs.finalPackage.doCheck [ glibcLocales procps ]
     ;
 
@@ -168,7 +168,7 @@ in {
       "-DLUA_PRG=${neovimLuaEnvOnBuild}/bin/luajit"
     ];
 
-    preConfigure = lib.optionalString stdenv.isDarwin ''
+    preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace src/nvim/CMakeLists.txt --replace "    util" ""
     '' + ''
       mkdir -p $out/lib/nvim/parser
diff --git a/pkgs/by-name/ne/netclient/package.nix b/pkgs/by-name/ne/netclient/package.nix
index 9634c2b07a80..5ac4e9f7a451 100644
--- a/pkgs/by-name/ne/netclient/package.nix
+++ b/pkgs/by-name/ne/netclient/package.nix
@@ -19,8 +19,8 @@ buildGoModule rec {
 
   vendorHash = "sha256-DzTTESPxYuZYNGjEG3PufLoS02+R9275arVcUzImpBU=";
 
-  buildInputs = lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Cocoa
-    ++ lib.optional stdenv.isLinux libX11;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Cocoa
+    ++ lib.optional stdenv.hostPlatform.isLinux libX11;
 
   hardeningEnabled = [ "pie" ];
 
diff --git a/pkgs/by-name/ne/neverest/package.nix b/pkgs/by-name/ne/neverest/package.nix
index 9b51e9715906..5c4bd81fa83c 100644
--- a/pkgs/by-name/ne/neverest/package.nix
+++ b/pkgs/by-name/ne/neverest/package.nix
@@ -34,7 +34,7 @@ rustPlatform.buildRustPackage rec {
     ++ lib.optional (installManPages || installShellCompletions) installShellFiles;
 
   buildInputs = [ ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ AppKit Cocoa Security ])
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ AppKit Cocoa Security ])
     ++ lib.optional (builtins.elem "notmuch" buildFeatures) notmuch;
 
   # TODO: unit tests temporarily broken, remove this line for the next
diff --git a/pkgs/by-name/ne/nextpnr/package.nix b/pkgs/by-name/ne/nextpnr/package.nix
index b6b2eb07bdc1..b6a3b6974d74 100644
--- a/pkgs/by-name/ne/nextpnr/package.nix
+++ b/pkgs/by-name/ne/nextpnr/package.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
       "-DHIMBAECHEL_GOWIN_DEVICES=all"
     ]
     ++ (lib.optional enableGui "-DBUILD_GUI=ON")
-    ++ (lib.optional (enableGui && stdenv.isDarwin)
+    ++ (lib.optional (enableGui && stdenv.hostPlatform.isDarwin)
         "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks");
 
   patchPhase = with builtins; ''
diff --git a/pkgs/by-name/ng/ngrok/package.nix b/pkgs/by-name/ng/ngrok/package.nix
index daf9da5c8f2f..bb47cd4d7367 100644
--- a/pkgs/by-name/ng/ngrok/package.nix
+++ b/pkgs/by-name/ng/ngrok/package.nix
@@ -7,20 +7,20 @@
 let
   versions = lib.importJSON ./versions.json;
   arch =
-    if stdenv.isi686 then
+    if stdenv.hostPlatform.isi686 then
       "386"
-    else if stdenv.isx86_64 then
+    else if stdenv.hostPlatform.isx86_64 then
       "amd64"
-    else if stdenv.isAarch32 then
+    else if stdenv.hostPlatform.isAarch32 then
       "arm"
-    else if stdenv.isAarch64 then
+    else if stdenv.hostPlatform.isAarch64 then
       "arm64"
     else
       throw "Unsupported architecture";
   os =
-    if stdenv.isLinux then
+    if stdenv.hostPlatform.isLinux then
       "linux"
-    else if stdenv.isDarwin then
+    else if stdenv.hostPlatform.isDarwin then
       "darwin"
     else
       throw "Unsupported os";
@@ -58,7 +58,7 @@ stdenv.mkDerivation {
   passthru.updateScript = ./update.sh;
 
   # Stripping causes SEGFAULT on darwin
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   meta = {
     description = "Allows you to expose a web server running on your local machine to the internet";
diff --git a/pkgs/by-name/nh/nh/package.nix b/pkgs/by-name/nh/nh/package.nix
index 0d2ad0a0d338..58a9f84b07cf 100644
--- a/pkgs/by-name/nh/nh/package.nix
+++ b/pkgs/by-name/nh/nh/package.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage {
     makeBinaryWrapper
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   preFixup = ''
     mkdir completions
diff --git a/pkgs/by-name/ni/nicstat/package.nix b/pkgs/by-name/ni/nicstat/package.nix
index d8da45a6082c..1e1e346b822b 100644
--- a/pkgs/by-name/ni/nicstat/package.nix
+++ b/pkgs/by-name/ni/nicstat/package.nix
@@ -44,6 +44,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with lib.maintainers; [ juliusrickert ];
     mainProgram = "nicstat";
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/ni/nix-btm/package.nix b/pkgs/by-name/ni/nix-btm/package.nix
index 42496a5bff03..a7d94b4863b5 100644
--- a/pkgs/by-name/ni/nix-btm/package.nix
+++ b/pkgs/by-name/ni/nix-btm/package.nix
@@ -12,7 +12,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-qUZ3zJjQrteFQerBKFH/+Ys0uOzvI7DH9rCaVtseJMM=";
 
-  buildInputs = lib.optionals stdenv.isDarwin
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin
     (with darwin.apple_sdk.frameworks; [ CoreServices SystemConfiguration ]);
 
   meta = with lib; {
diff --git a/pkgs/by-name/ni/nix-health/package.nix b/pkgs/by-name/ni/nix-health/package.nix
index 3cb4fc881c7b..2081714d50a9 100644
--- a/pkgs/by-name/ni/nix-health/package.nix
+++ b/pkgs/by-name/ni/nix-health/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [ libiconv openssl ]
     # Use a newer SDK for CoreFoundation, because the sysinfo crate requires
     # it, https://github.com/GuillaumeGomez/sysinfo/issues/915
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk_11_0.frameworks;
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk_11_0.frameworks;
       [ IOKit
         CoreFoundation
       ]);
diff --git a/pkgs/by-name/ni/nix-top/package.nix b/pkgs/by-name/ni/nix-top/package.nix
index 55170ec40896..fa69693781e0 100644
--- a/pkgs/by-name/ni/nix-top/package.nix
+++ b/pkgs/by-name/ni/nix-top/package.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
       wrapProgram $out/bin/nix-top \
         --prefix PATH : "$out/libexec/nix-top:${additionalPath}"
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       ln -s /bin/stty $out/libexec/nix-top
     ''
     + ''
diff --git a/pkgs/by-name/ni/nix-weather/package.nix b/pkgs/by-name/ni/nix-weather/package.nix
index ea552ca9e4f4..02f31ee19739 100644
--- a/pkgs/by-name/ni/nix-weather/package.nix
+++ b/pkgs/by-name/ni/nix-weather/package.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
       openssl
       installShellFiles
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/ni/nix-web/package.nix b/pkgs/by-name/ni/nix-web/package.nix
index ad97b1356b3e..21d6c9f15d0c 100644
--- a/pkgs/by-name/ni/nix-web/package.nix
+++ b/pkgs/by-name/ni/nix-web/package.nix
@@ -26,8 +26,8 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-romL/RALr/pmwUA8/SN4AOwc+Vndspd1Yrqs0AHPYRY=";
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = lib.optional (!stdenv.isDarwin) openssl
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
+  buildInputs = lib.optional (!stdenv.hostPlatform.isDarwin) openssl
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
 
   postPatch = ''
     substituteInPlace nix-web/nix-web.service \
diff --git a/pkgs/by-name/ni/nixtract/package.nix b/pkgs/by-name/ni/nixtract/package.nix
index e046e49d84f4..2885a13f300d 100644
--- a/pkgs/by-name/ni/nixtract/package.nix
+++ b/pkgs/by-name/ni/nixtract/package.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       darwin.apple_sdk.frameworks.SystemConfiguration
     ];
diff --git a/pkgs/by-name/nm/nmap/package.nix b/pkgs/by-name/nm/nmap/package.nix
index 666f6bd84ecc..e90fc8ec322e 100644
--- a/pkgs/by-name/nm/nmap/package.nix
+++ b/pkgs/by-name/nm/nmap/package.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-4Uq1MOR7Wv2I8ciiusf4nNj+a0eOItJVxbm923ocV3g=";
   };
 
-  prePatch = lib.optionalString stdenv.isDarwin ''
+  prePatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace libz/configure \
         --replace /usr/bin/libtool ar \
         --replace 'AR="libtool"' 'AR="ar"' \
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     install -m 444 -D nselib/data/passwords.lst $out/share/wordlists/nmap.lst
   '';
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change liblinear.so.5 ${liblinear.out}/lib/liblinear.5.dylib $out/bin/nmap
   '';
 
diff --git a/pkgs/by-name/nn/nncp/package.nix b/pkgs/by-name/nn/nncp/package.nix
index 13c4c4812b92..bbacef76fbb0 100644
--- a/pkgs/by-name/nn/nncp/package.nix
+++ b/pkgs/by-name/nn/nncp/package.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     changelog = "http://www.nncpgo.org/News.html";
     description = "Secure UUCP-like store-and-forward exchanging";
     downloadPage = "http://www.nncpgo.org/Tarballs.html";
diff --git a/pkgs/by-name/no/nomacs/package.nix b/pkgs/by-name/no/nomacs/package.nix
index a5f17f4b365b..45333177d070 100644
--- a/pkgs/by-name/no/nomacs/package.nix
+++ b/pkgs/by-name/no/nomacs/package.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   outputs = [ "out" ]
     # man pages are not installed on Darwin, see cmake/{Mac,Unix}BuildTarget.cmake
-    ++ lib.optionals (!stdenv.isDarwin) [ "man" ];
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ "man" ];
 
   sourceRoot = "${finalAttrs.src.name}/ImageLounge";
 
@@ -60,7 +60,7 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.cmakeBool "USE_SYSTEM_QUAZIP" true)
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications,lib}
     mv $out/nomacs.app $out/Applications/nomacs.app
     mv $out/libnomacsCore.dylib $out/lib/libnomacsCore.dylib
diff --git a/pkgs/by-name/no/normcap/package.nix b/pkgs/by-name/no/normcap/package.nix
index e862247b0df5..a93db6de0279 100644
--- a/pkgs/by-name/no/normcap/package.nix
+++ b/pkgs/by-name/no/normcap/package.nix
@@ -17,7 +17,7 @@ let
     leptonica
     tesseract4
     libnotify
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     wl-clipboard
   ];
 
@@ -73,21 +73,21 @@ ps.buildPythonApplication rec {
     ps.pytestCheckHook
     ps.pytest-qt
     ps.toml
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     ps.pytest-xvfb
     xorg.xvfb
   ];
 
   preCheck = ''
     export HOME=$(mktemp -d)
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     # setup a virtual x11 display
     export DISPLAY=:$((2000 + $RANDOM % 1000))
     Xvfb $DISPLAY -screen 5 1024x768x8 &
     xvfb_pid=$!
   '';
 
-  postCheck = lib.optionalString stdenv.isLinux ''
+  postCheck = lib.optionalString stdenv.hostPlatform.isLinux ''
     # cleanup the virtual x11 display
     sleep 0.5
     kill $xvfb_pid
@@ -106,7 +106,7 @@ ps.buildPythonApplication rec {
     "test_synchronized_capture"
     # flaky
     "test_normcap_ocr_testcases"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # requires impure pbcopy
     "test_get_copy_func_with_pbcopy"
     "test_get_copy_func_without_pbcopy"
@@ -128,7 +128,7 @@ ps.buildPythonApplication rec {
     # RuntimeError("Internal C++ object (PySide6.QtGui.QHideEvent) already deleted.")
     # AttributeError("'LoadingIndicator' object has no attribute 'timer'")
     "tests/tests_gui/test_loading_indicator.py"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # requires a display
     "tests/integration/test_normcap.py"
     "tests/integration/test_tray_menu.py"
@@ -142,6 +142,6 @@ ps.buildPythonApplication rec {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ cafkafk pbsds ];
     mainProgram = "normcap";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/no/nosql-workbench/package.nix b/pkgs/by-name/no/nosql-workbench/package.nix
index bc9532c58d94..d3d3d4c4f4b9 100644
--- a/pkgs/by-name/no/nosql-workbench/package.nix
+++ b/pkgs/by-name/no/nosql-workbench/package.nix
@@ -41,7 +41,7 @@ let
     ];
   };
 in
-if stdenv.isDarwin then
+if stdenv.hostPlatform.isDarwin then
   stdenv.mkDerivation {
     inherit
       pname
diff --git a/pkgs/by-name/no/nostui/package.nix b/pkgs/by-name/no/nostui/package.nix
index 6fbd71ac2d05..9c4f32004849 100644
--- a/pkgs/by-name/no/nostui/package.nix
+++ b/pkgs/by-name/no/nostui/package.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-RCD11KdzM66Mkydc51r6fG+q8bmKl5eZma58YoARwPo=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk; [ frameworks.SystemConfiguration ]
   );
 
diff --git a/pkgs/by-name/no/notes/package.nix b/pkgs/by-name/no/notes/package.nix
index c9ca49ffe745..83af624af20c 100644
--- a/pkgs/by-name/no/notes/package.nix
+++ b/pkgs/by-name/no/notes/package.nix
@@ -8,7 +8,7 @@
   overrideSDK,
 }:
 let
-  stdenv' = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
 in
 stdenv'.mkDerivation (finalAttrs: {
   pname = "notes";
@@ -34,11 +34,11 @@ stdenv'.mkDerivation (finalAttrs: {
       qt6.qtbase
       qt6.qtdeclarative
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk_11_0.frameworks.Cocoa
     ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/Applications
     mv $out/bin/Notes.app $out/Applications
   '';
diff --git a/pkgs/by-name/no/novelwriter/package.nix b/pkgs/by-name/no/novelwriter/package.nix
index 9bf21b216aa0..f33aa1b03a42 100644
--- a/pkgs/by-name/no/novelwriter/package.nix
+++ b/pkgs/by-name/no/novelwriter/package.nix
@@ -36,7 +36,7 @@ python3.pkgs.buildPythonApplication {
     export QT_QPA_PLATFORM_PLUGIN_PATH=${qt5.qtbase.bin}/lib/qt-${qt5.qtbase.version}/plugins/platforms
   '';
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     mkdir -p $out/share/{icons,applications,pixmaps,mime/packages}
 
     cp -r setup/data/hicolor $out/share/icons
@@ -68,6 +68,6 @@ python3.pkgs.buildPythonApplication {
     mainProgram = "novelwriter";
 
     platforms = with lib.platforms; unix ++ windows;
-    broken = stdenv.isDarwin; # TODO awaiting build instructions for Darwin
+    broken = stdenv.hostPlatform.isDarwin; # TODO awaiting build instructions for Darwin
   };
 }
diff --git a/pkgs/by-name/no/novops/package.nix b/pkgs/by-name/no/novops/package.nix
index a254f734178a..44edb7f32953 100644
--- a/pkgs/by-name/no/novops/package.nix
+++ b/pkgs/by-name/no/novops/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl # required for openssl-sys
-  ] ++ lib.optional stdenv.isDarwin [
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin [
     libiconv
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/nr/nrr/package.nix b/pkgs/by-name/nr/nrr/package.nix
index 0cf4c2bb0b1f..0c7aa77aca1d 100644
--- a/pkgs/by-name/nr/nrr/package.nix
+++ b/pkgs/by-name/nr/nrr/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-F2JlUErplSRQwSAEavQPNDMcXYc2waeYwjGuzmZq8sc=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.IOKit
diff --git a/pkgs/by-name/ns/nsxiv/package.nix b/pkgs/by-name/ns/nsxiv/package.nix
index ba267571a900..b54c8ce55f4e 100644
--- a/pkgs/by-name/ns/nsxiv/package.nix
+++ b/pkgs/by-name/ns/nsxiv/package.nix
@@ -30,13 +30,13 @@ stdenv.mkDerivation (finalAttrs: {
     libXft
     libexif
     libwebp
-  ] ++ lib.optional stdenv.isDarwin libinotify-kqueue;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin libinotify-kqueue;
 
   postPatch = lib.optionalString (conf != null) ''
     cp ${(builtins.toFile "config.def.h" conf)} config.def.h
   '';
 
-  env.NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-linotify";
+  env.NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-linotify";
 
   makeFlags = [ "CC:=$(CC)" ];
 
diff --git a/pkgs/by-name/nt/ntpd-rs/package.nix b/pkgs/by-name/nt/ntpd-rs/package.nix
index 43df56ac024e..bc385466c8eb 100644
--- a/pkgs/by-name/nt/ntpd-rs/package.nix
+++ b/pkgs/by-name/nt/ntpd-rs/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-9HLbGC6j0Wq/lG//CeEAfnYzlGG14CnDpmluL1moHWQ=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk_11_0.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk_11_0.frameworks.Security ];
   nativeBuildInputs = [
     pandoc
     installShellFiles
@@ -60,7 +60,7 @@ rustPlatform.buildRustPackage rec {
 
   passthru = {
     tests = {
-      nixos = lib.optionalAttrs stdenv.isLinux nixosTests.ntpd-rs;
+      nixos = lib.optionalAttrs stdenv.hostPlatform.isLinux nixosTests.ntpd-rs;
       version = testers.testVersion {
         package = ntpd-rs;
         inherit version;
@@ -84,6 +84,6 @@ rustPlatform.buildRustPackage rec {
     ];
     mainProgram = "ntp-ctl";
     # note: Undefined symbols for architecture x86_64: "_ntp_adjtime"
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 }
diff --git a/pkgs/by-name/nu/nulloy/package.nix b/pkgs/by-name/nu/nulloy/package.nix
index 8e82b6ae0638..203ddf84c409 100644
--- a/pkgs/by-name/nu/nulloy/package.nix
+++ b/pkgs/by-name/nu/nulloy/package.nix
@@ -61,6 +61,6 @@ stdenv.mkDerivation rec {
     mainProgram = "nulloy";
     maintainers = with maintainers; [ aleksana ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/nu/numbat/package.nix b/pkgs/by-name/nu/numbat/package.nix
index 829b1bf8a4a4..ce3c954b88c2 100644
--- a/pkgs/by-name/nu/numbat/package.nix
+++ b/pkgs/by-name/nu/numbat/package.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-t6vxJ0UIQJILCGv4PO5V4/QF5de/wtMQDkb8gPtE70E=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/nv/nvidia-texture-tools/package.nix b/pkgs/by-name/nv/nvidia-texture-tools/package.nix
index 3f2bd5ad36a3..13f285bc66e8 100644
--- a/pkgs/by-name/nv/nvidia-texture-tools/package.nix
+++ b/pkgs/by-name/nv/nvidia-texture-tools/package.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
     # Make a recently added pure virtual function just virtual,
     # to keep compatibility.
     sed -i 's/virtual void endImage() = 0;/virtual void endImage() {}/' src/nvtt/nvtt.h
-  '' + lib.optionalString stdenv.isAarch64 ''
+  '' + lib.optionalString stdenv.hostPlatform.isAarch64 ''
     # remove x86_64-only libraries
     sed -i '/bc1enc/d' src/nvtt/tests/CMakeLists.txt
     sed -i '/libsquish/d;/CMP_Core/d' extern/CMakeLists.txt
diff --git a/pkgs/by-name/nw/nwjs-ffmpeg-prebuilt/package.nix b/pkgs/by-name/nw/nwjs-ffmpeg-prebuilt/package.nix
index e0d721fd352e..6acad5ed2c12 100644
--- a/pkgs/by-name/nw/nwjs-ffmpeg-prebuilt/package.nix
+++ b/pkgs/by-name/nw/nwjs-ffmpeg-prebuilt/package.nix
@@ -6,7 +6,7 @@
 }:
 
 let
-  bits = if stdenv.is64bit then "x64" else "ia32";
+  bits = if stdenv.hostPlatform.is64bit then "x64" else "ia32";
   version = "0.91.0";
 in
 stdenv.mkDerivation {
diff --git a/pkgs/by-name/oa/oauth2l/package.nix b/pkgs/by-name/oa/oauth2l/package.nix
index 612575d2b266..c6d7070486bd 100644
--- a/pkgs/by-name/oa/oauth2l/package.nix
+++ b/pkgs/by-name/oa/oauth2l/package.nix
@@ -23,7 +23,7 @@ buildGoModule rec {
   preCheck = "export HOME=$(mktemp -d)";
 
   # tests fail on linux for some reason
-  doCheck = stdenv.isDarwin;
+  doCheck = stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Simple CLI for interacting with Google API authentication";
diff --git a/pkgs/by-name/oc/ocis-bin/package.nix b/pkgs/by-name/oc/ocis-bin/package.nix
index a0b8a62ed462..e853e40b35bc 100644
--- a/pkgs/by-name/oc/ocis-bin/package.nix
+++ b/pkgs/by-name/oc/ocis-bin/package.nix
@@ -18,9 +18,9 @@ let
     ."${stdenv.hostPlatform.system}" or (throw "Unsupported system: ${stdenv.hostPlatform.system}");
 
   os =
-    if stdenv.isLinux then
+    if stdenv.hostPlatform.isLinux then
       "linux"
-    else if stdenv.isDarwin then
+    else if stdenv.hostPlatform.isDarwin then
       "darwin"
     else
       throw "Unsupported OS";
diff --git a/pkgs/by-name/oc/ocsinventory-agent/package.nix b/pkgs/by-name/oc/ocsinventory-agent/package.nix
index 7e5782cba0f1..d3f77414e049 100644
--- a/pkgs/by-name/oc/ocsinventory-agent/package.nix
+++ b/pkgs/by-name/oc/ocsinventory-agent/package.nix
@@ -32,7 +32,7 @@ perlPackages.buildPerlPackage rec {
     hash = "sha256-aFzBrUsVttUhpYGEYd/yYuXmE90PGCiBmBsVjtHcHLg=";
   };
 
-  nativeBuildInputs = [ makeWrapper ] ++ lib.optional stdenv.isDarwin shortenPerlShebang;
+  nativeBuildInputs = [ makeWrapper ] ++ lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
 
   buildInputs = with perlPackages; [
     perl
@@ -48,9 +48,9 @@ perlPackages.buildPerlPackage rec {
     ProcDaemon
     ProcPIDFile
     XMLSimple
-  ] ++ lib.optionals stdenv.isLinux (with perlPackages; [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux (with perlPackages; [
     NetCUPS # cups-filters is broken on darwin
-  ]) ++ lib.optionals stdenv.isDarwin (with perlPackages; [
+  ]) ++ lib.optionals stdenv.hostPlatform.isDarwin (with perlPackages; [
     MacSysProfile
   ]);
 
@@ -62,14 +62,14 @@ perlPackages.buildPerlPackage rec {
       ipmitool # ipmitool
       nmap # nmap
       pciutils # lspci
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       dmidecode # dmidecode
       iproute2 # ip
       lvm2 # pvs
       usbutils # lsusb
       util-linux # last, lsblk, mount
     ];
-  in lib.optionalString stdenv.isDarwin ''
+  in lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/ocsinventory-agent
   '' + ''
     wrapProgram $out/bin/ocsinventory-agent --prefix PATH : ${lib.makeBinPath runtimeDependencies}
diff --git a/pkgs/by-name/od/odin/package.nix b/pkgs/by-name/od/odin/package.nix
index 305b9d329d02..4a14bfa443aa 100644
--- a/pkgs/by-name/od/odin/package.nix
+++ b/pkgs/by-name/od/odin/package.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation {
   };
 
   postPatch =
-    lib.optionalString stdenv.isDarwin ''
+    lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace src/linker.cpp \
           --replace-fail '/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk' ${MacOSX-SDK}
     ''
@@ -46,7 +46,7 @@ stdenv.mkDerivation {
     which
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     Security
   ];
diff --git a/pkgs/by-name/og/oguri/package.nix b/pkgs/by-name/og/oguri/package.nix
index 9156e6df39b0..b7cc17014ed3 100644
--- a/pkgs/by-name/og/oguri/package.nix
+++ b/pkgs/by-name/og/oguri/package.nix
@@ -37,6 +37,6 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     maintainers = with maintainers; [ AndersonTorres ];
     inherit (wayland.meta) platforms;
-    broken = stdenv.isDarwin; # this should be enfoced by wayland platforms in the future
+    broken = stdenv.hostPlatform.isDarwin; # this should be enfoced by wayland platforms in the future
   };
 }
diff --git a/pkgs/by-name/ol/ollama/package.nix b/pkgs/by-name/ol/ollama/package.nix
index f16103382494..d286c1569916 100644
--- a/pkgs/by-name/ol/ollama/package.nix
+++ b/pkgs/by-name/ol/ollama/package.nix
@@ -62,8 +62,8 @@ let
   rocmRequested = shouldEnable "rocm" config.rocmSupport;
   cudaRequested = shouldEnable "cuda" config.cudaSupport;
 
-  enableRocm = rocmRequested && stdenv.isLinux;
-  enableCuda = cudaRequested && stdenv.isLinux;
+  enableRocm = rocmRequested && stdenv.hostPlatform.isLinux;
+  enableCuda = cudaRequested && stdenv.hostPlatform.isLinux;
 
   rocmLibs = [
     rocmPackages.clr
@@ -144,12 +144,12 @@ goBuild {
       makeWrapper
       autoAddDriverRunpath
     ]
-    ++ lib.optionals stdenv.isDarwin metalFrameworks;
+    ++ lib.optionals stdenv.hostPlatform.isDarwin metalFrameworks;
 
   buildInputs =
     lib.optionals enableRocm (rocmLibs ++ [ libdrm ])
     ++ lib.optionals enableCuda cudaLibs
-    ++ lib.optionals stdenv.isDarwin metalFrameworks;
+    ++ lib.optionals stdenv.hostPlatform.isDarwin metalFrameworks;
 
   patches = [
     # disable uses of `git` in the `go generate` script
@@ -209,7 +209,7 @@ goBuild {
           package = ollama;
         };
       }
-      // lib.optionalAttrs stdenv.isLinux {
+      // lib.optionalAttrs stdenv.hostPlatform.isLinux {
         inherit ollama-rocm ollama-cuda;
         service = nixosTests.ollama;
         service-cuda = nixosTests.ollama-cuda;
diff --git a/pkgs/by-name/on/onscripter-en/package.nix b/pkgs/by-name/on/onscripter-en/package.nix
index 74b440b42773..64c7cd931fa2 100644
--- a/pkgs/by-name/on/onscripter-en/package.nix
+++ b/pkgs/by-name/on/onscripter-en/package.nix
@@ -62,6 +62,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "onscripter-en";
     maintainers = with lib.maintainers; [ AndersonTorres ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/op/open-scq30/package.nix b/pkgs/by-name/op/open-scq30/package.nix
index 33d4e47c76fb..1028cfb68250 100644
--- a/pkgs/by-name/op/open-scq30/package.nix
+++ b/pkgs/by-name/op/open-scq30/package.nix
@@ -42,7 +42,7 @@ rustPlatform.buildRustPackage rec {
     gtk4
     libadwaita
     pango
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.CoreBluetooth
     darwin.apple_sdk.frameworks.CoreGraphics
diff --git a/pkgs/by-name/op/openapi-python-client/package.nix b/pkgs/by-name/op/openapi-python-client/package.nix
index 550fca6c7abb..a4445a6a5670 100644
--- a/pkgs/by-name/op/openapi-python-client/package.nix
+++ b/pkgs/by-name/op/openapi-python-client/package.nix
@@ -27,7 +27,7 @@ python3Packages.buildPythonApplication rec {
     [
       installShellFiles
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.ps
     ];
 
diff --git a/pkgs/by-name/op/openctm/package.nix b/pkgs/by-name/op/openctm/package.nix
index 169e4469abcd..4d380543857f 100644
--- a/pkgs/by-name/op/openctm/package.nix
+++ b/pkgs/by-name/op/openctm/package.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation (finalAttrs: {
     "MAN1DIR=$(man)/share/man//man1"
   ];
 
-  makefile = if stdenv.isDarwin then "Makefile.macosx" else "Makefile.linux";
+  makefile = if stdenv.hostPlatform.isDarwin then "Makefile.macosx" else "Makefile.linux";
 
   preInstall = "mkdir -p $bin/bin $dev/include $out/lib $man/share/man/man1";
 
diff --git a/pkgs/by-name/op/openorienteering-mapper/package.nix b/pkgs/by-name/op/openorienteering-mapper/package.nix
index 037364ed6263..5d9fb8e256cd 100644
--- a/pkgs/by-name/op/openorienteering-mapper/package.nix
+++ b/pkgs/by-name/op/openorienteering-mapper/package.nix
@@ -63,7 +63,7 @@ stdenv.mkDerivation rec {
     # See https://github.com/NixOS/nixpkgs/issues/85306
     (lib.cmakeBool "LICENSING_PROVIDER" false)
     (lib.cmakeBool "Mapper_MANUAL_QTHELP" false)
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # FindGDAL is broken and always finds /Library/Framework unless this is
     # specified
     (lib.cmakeFeature "GDAL_INCLUDE_DIR" "${gdal}/include")
diff --git a/pkgs/by-name/op/openpgl/package.nix b/pkgs/by-name/op/openpgl/package.nix
index 76e61b6658d6..db0ba62beb0f 100644
--- a/pkgs/by-name/op/openpgl/package.nix
+++ b/pkgs/by-name/op/openpgl/package.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-DTBB_ROOT=${tbb.out}"
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isAarch64 && !stdenv.isDarwin) "-flax-vector-conversions";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isAarch64 && !stdenv.hostPlatform.isDarwin) "-flax-vector-conversions";
 
   meta = {
     description = "Intel Open Path Guiding Library";
diff --git a/pkgs/by-name/op/openpgp-ca/package.nix b/pkgs/by-name/op/openpgp-ca/package.nix
index e97087ccf596..e2397c5413db 100644
--- a/pkgs/by-name/op/openpgp-ca/package.nix
+++ b/pkgs/by-name/op/openpgp-ca/package.nix
@@ -39,7 +39,7 @@ rustPlatform.buildRustPackage rec {
     sqlite
     pcsclite
     nettle
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ PCSC Security SystemConfiguration ]);
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ PCSC Security SystemConfiguration ]);
 
   # Most tests rely on gnupg being able to write to /run/user
   # gnupg refuses to respect the XDG_RUNTIME_DIR variable, so we skip the tests
diff --git a/pkgs/by-name/op/openpgp-card-tools/package.nix b/pkgs/by-name/op/openpgp-card-tools/package.nix
index 00a4be3e9ece..03d828204449 100644
--- a/pkgs/by-name/op/openpgp-card-tools/package.nix
+++ b/pkgs/by-name/op/openpgp-card-tools/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config rustPlatform.bindgenHook ];
 
-  buildInputs = [ pcsclite ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ pcsclite ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.PCSC
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/by-name/op/openscad-unstable/package.nix b/pkgs/by-name/op/openscad-unstable/package.nix
index eb1dd005af46..8a96876d65dd 100644
--- a/pkgs/by-name/op/openscad-unstable/package.nix
+++ b/pkgs/by-name/op/openscad-unstable/package.nix
@@ -92,7 +92,7 @@ clangStdenv.mkDerivation rec {
     qtbase
     qtmultimedia
   ]
-  ++ lib.optionals clangStdenv.isLinux [
+  ++ lib.optionals clangStdenv.hostPlatform.isLinux [
     xorg.libXdmcp
     libICE
     libSM
@@ -101,7 +101,7 @@ clangStdenv.mkDerivation rec {
     qtwayland
     libGLU
   ]
-  ++ lib.optional clangStdenv.isDarwin qtmacextras
+  ++ lib.optional clangStdenv.hostPlatform.isDarwin qtmacextras
   ;
   cmakeFlags = [
     "-DEXPERIMENTAL=ON" # enable experimental options
diff --git a/pkgs/by-name/op/opentelemetry-cpp/package.nix b/pkgs/by-name/op/opentelemetry-cpp/package.nix
index e8f799f765ee..47f4d7b73155 100644
--- a/pkgs/by-name/op/opentelemetry-cpp/package.nix
+++ b/pkgs/by-name/op/opentelemetry-cpp/package.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   patches = [
     ./0001-Disable-tests-requiring-network-access.patch
-  ] ++ lib.optional stdenv.isDarwin ./0002-Disable-segfaulting-test-on-Darwin.patch;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin ./0002-Disable-segfaulting-test-on-Darwin.patch;
 
   nativeBuildInputs = [ cmake ];
 
diff --git a/pkgs/by-name/op/openturns/package.nix b/pkgs/by-name/op/openturns/package.nix
index 58ca6a4139b5..5d62a61c2e95 100644
--- a/pkgs/by-name/op/openturns/package.nix
+++ b/pkgs/by-name/op/openturns/package.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation (finalAttrs: {
     python3Packages.psutil
     python3Packages.python
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Accelerate
   ];
 
diff --git a/pkgs/by-name/op/openvr/package.nix b/pkgs/by-name/op/openvr/package.nix
index 7d309065df9e..ed17bb7c8976 100644
--- a/pkgs/by-name/op/openvr/package.nix
+++ b/pkgs/by-name/op/openvr/package.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     jsoncpp
     libGL
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Foundation
   ];
@@ -60,7 +60,7 @@ stdenv.mkDerivation (finalAttrs: {
   passthru.updateScript = nix-update-script { };
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "API and runtime that allows access to VR hardware from multiple vendors without requiring that applications have specific knowledge of the hardware they are targeting";
     homepage = "https://github.com/ValveSoftware/openvr";
     license = lib.licenses.bsd3;
diff --git a/pkgs/by-name/op/ophcrack/package.nix b/pkgs/by-name/op/ophcrack/package.nix
index 13709ad9973a..1fbf6c180545 100644
--- a/pkgs/by-name/op/ophcrack/package.nix
+++ b/pkgs/by-name/op/ophcrack/package.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config ] ++ lib.optional enableGui libsForQt5.wrapQtAppsHook;
   buildInputs =
     [ openssl ]
-    ++ (if enableGui then [ libsForQt5.qtcharts ] else [ expat ]) ++ lib.optional stdenv.isDarwin expat;
+    ++ (if enableGui then [ libsForQt5.qtcharts ] else [ expat ]) ++ lib.optional stdenv.hostPlatform.isDarwin expat;
 
   configureFlags =
     [ "--with-libssl" ]
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
         [ "--disable-gui" ]
     );
 
-  installPhase = lib.optional stdenv.isDarwin ''
+  installPhase = lib.optional stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/bin
     cp -R src/ophcrack $out/bin
   '';
diff --git a/pkgs/by-name/or/orbiton/package.nix b/pkgs/by-name/or/orbiton/package.nix
index f8fbc3484e12..6e9cee2539fe 100644
--- a/pkgs/by-name/or/orbiton/package.nix
+++ b/pkgs/by-name/or/orbiton/package.nix
@@ -15,7 +15,7 @@ buildGoModule rec {
 
   vendorHash = null;
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile \
       --replace "-Wl,--as-needed" ""
 
diff --git a/pkgs/by-name/or/ord/package.nix b/pkgs/by-name/or/ord/package.nix
index 2d13cc585aed..cc5257d6189b 100644
--- a/pkgs/by-name/or/ord/package.nix
+++ b/pkgs/by-name/or/ord/package.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/os/osqp-eigen/package.nix b/pkgs/by-name/os/osqp-eigen/package.nix
index 935bb0bfa659..016fbe8b0aca 100644
--- a/pkgs/by-name/os/osqp-eigen/package.nix
+++ b/pkgs/by-name/os/osqp-eigen/package.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   cmakeFlags = [
     (lib.cmakeBool "BUILD_TESTING" true)
-    (lib.cmakeBool "OSQPEIGEN_RUN_Valgrind_tests" stdenv.isLinux)
+    (lib.cmakeBool "OSQPEIGEN_RUN_Valgrind_tests" stdenv.hostPlatform.isLinux)
   ];
 
   nativeBuildInputs = [ cmake ];
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
     osqp
   ];
   checkInputs = [ catch2 ];
-  nativeCheckInputs = lib.optional stdenv.isLinux valgrind;
+  nativeCheckInputs = lib.optional stdenv.hostPlatform.isLinux valgrind;
 
   doCheck = true;
 
diff --git a/pkgs/by-name/ow/owmods-cli/package.nix b/pkgs/by-name/ow/owmods-cli/package.nix
index 23db01329511..92809dab6243 100644
--- a/pkgs/by-name/ow/owmods-cli/package.nix
+++ b/pkgs/by-name/ow/owmods-cli/package.nix
@@ -35,9 +35,9 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     zstd
     libsoup_3
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/ow/owncloud-client/package.nix b/pkgs/by-name/ow/owncloud-client/package.nix
index 31f2b52b00bb..0de43753d13f 100644
--- a/pkgs/by-name/ow/owncloud-client/package.nix
+++ b/pkgs/by-name/ow/owncloud-client/package.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
     qt6Packages.qtkeychain
     libre-graph-api-cpp-qt-client
     kdsingleapplication
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libinotify-kqueue sparkleshare
   ];
 
diff --git a/pkgs/by-name/pa/pablodraw/package.nix b/pkgs/by-name/pa/pablodraw/package.nix
index 793abf7f0158..012961c99b19 100644
--- a/pkgs/by-name/pa/pablodraw/package.nix
+++ b/pkgs/by-name/pa/pablodraw/package.nix
@@ -64,6 +64,6 @@ buildDotnetModule rec {
     mainProgram = "PabloDraw";
     maintainers = with maintainers; [ aleksana kip93 ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # Eto.Platform.Mac64 not found in nugetSource
+    broken = stdenv.hostPlatform.isDarwin; # Eto.Platform.Mac64 not found in nugetSource
   };
 }
diff --git a/pkgs/by-name/pa/paper-plane/package.nix b/pkgs/by-name/pa/paper-plane/package.nix
index d308a9325425..228c4aa638b0 100644
--- a/pkgs/by-name/pa/paper-plane/package.nix
+++ b/pkgs/by-name/pa/paper-plane/package.nix
@@ -101,7 +101,7 @@ stdenv.mkDerivation {
     gst_all_1.gst-libav
     gst_all_1.gst-plugins-base
     gst_all_1.gst-plugins-good
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/by-name/pa/paperlib/package.nix b/pkgs/by-name/pa/paperlib/package.nix
index c03f0434b3d8..d39e35be942b 100644
--- a/pkgs/by-name/pa/paperlib/package.nix
+++ b/pkgs/by-name/pa/paperlib/package.nix
@@ -39,7 +39,7 @@ let
     sourceProvenance = with lib.sourceTypes; [ binaryNativeCode ];
   };
 in
-if stdenv.isDarwin then
+if stdenv.hostPlatform.isDarwin then
   stdenv.mkDerivation {
     inherit
       pname
diff --git a/pkgs/by-name/pa/papers/package.nix b/pkgs/by-name/pa/papers/package.nix
index bfa2c5d6da2d..db943d8ea940 100644
--- a/pkgs/by-name/pa/papers/package.nix
+++ b/pkgs/by-name/pa/papers/package.nix
@@ -28,7 +28,7 @@
 , gi-docgen
 , libgxps
 , withLibsecret ? true
-, supportNautilus ? (!stdenv.isDarwin)
+, supportNautilus ? (!stdenv.hostPlatform.isDarwin)
 , libadwaita
 , exempi
 , cargo
@@ -95,7 +95,7 @@ stdenv.mkDerivation (finalAttrs: {
     libsecret
   ] ++ lib.optionals supportNautilus [
     nautilus
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
@@ -123,7 +123,7 @@ stdenv.mkDerivation (finalAttrs: {
       # https://gitlab.gnome.org/GNOME/Incubator/papers/-/issues/176
       --prefix PATH : "$out/bin"
     )
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -add_rpath "$out/lib" "$out/bin/papers"
   '';
 
diff --git a/pkgs/by-name/pa/paru/package.nix b/pkgs/by-name/pa/paru/package.nix
index b8c457f8b58c..d961826d1247 100644
--- a/pkgs/by-name/pa/paru/package.nix
+++ b/pkgs/by-name/pa/paru/package.nix
@@ -54,7 +54,7 @@ rustPlatform.buildRustPackage rec {
   ];
 
   # https://aur.archlinux.org/packages/paru#comment-961914
-  buildFeatures = lib.optionals stdenv.isAarch64 [ "generate" ];
+  buildFeatures = lib.optionals stdenv.hostPlatform.isAarch64 [ "generate" ];
 
   postBuild = ''
     sh ./scripts/mkmo locale/
diff --git a/pkgs/by-name/pa/passes/package.nix b/pkgs/by-name/pa/passes/package.nix
index a20a1fe80b84..74d34f682b0d 100644
--- a/pkgs/by-name/pa/passes/package.nix
+++ b/pkgs/by-name/pa/passes/package.nix
@@ -63,6 +63,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ fgaz ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # Crashes
+    broken = stdenv.hostPlatform.isDarwin; # Crashes
   };
 })
diff --git a/pkgs/by-name/pe/petsc/package.nix b/pkgs/by-name/pe/petsc/package.nix
index 2ea48a54a793..498a14c96dc3 100644
--- a/pkgs/by-name/pe/petsc/package.nix
+++ b/pkgs/by-name/pe/petsc/package.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
     lapack
   ] ++ lib.optional hdf5-support hdf5 ++ lib.optional petsc-withp4est p4est ++ lib.optionals withParmetis [ metis parmetis ];
 
-  prePatch = lib.optionalString stdenv.isDarwin ''
+  prePatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace config/install.py \
       --replace /usr/bin/install_name_tool ${cctools}/bin/install_name_tool
   '';
diff --git a/pkgs/by-name/pg/pgagroal/package.nix b/pkgs/by-name/pg/pgagroal/package.nix
index 72eb5c153a48..2b89773af833 100644
--- a/pkgs/by-name/pg/pgagroal/package.nix
+++ b/pkgs/by-name/pg/pgagroal/package.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ cmake docutils ];
 
   buildInputs = [ cjson libev openssl ]
-    ++ lib.optionals stdenv.isLinux [ systemd ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ systemd ];
 
   meta = with lib; {
     description = "High-performance connection pool for PostgreSQL";
diff --git a/pkgs/by-name/pg/pgcopydb/package.nix b/pkgs/by-name/pg/pgcopydb/package.nix
index 0df2ab9c04f7..1fda00a750e9 100644
--- a/pkgs/by-name/pg/pgcopydb/package.nix
+++ b/pkgs/by-name/pg/pgcopydb/package.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
     readline
     sqlite
     zlib
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     pam
   ];
 
diff --git a/pkgs/by-name/ph/photoqt/package.nix b/pkgs/by-name/ph/photoqt/package.nix
index ff80e9bc1542..6e66d6885efc 100644
--- a/pkgs/by-name/ph/photoqt/package.nix
+++ b/pkgs/by-name/ph/photoqt/package.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
       qt6Packages.poppler
       zxing-cpp
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       mpv
       qt6.qtwayland
     ];
@@ -59,12 +59,12 @@ stdenv.mkDerivation rec {
     (lib.cmakeBool "CHROMECAST" false)
     (lib.cmakeBool "FREEIMAGE" false)
     (lib.cmakeBool "IMAGEMAGICK" false)
-    (lib.cmakeBool "VIDEO_MPV" (!stdenv.isDarwin))
+    (lib.cmakeBool "VIDEO_MPV" (!stdenv.hostPlatform.isDarwin))
   ];
 
   env.MAGICK_LOCATION = "${graphicsmagick}/include/GraphicsMagick";
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv $out/bin/photoqt.app $out/Applications
     makeWrapper $out/{Applications/photoqt.app/Contents/MacOS,bin}/photoqt
diff --git a/pkgs/by-name/pi/picocom/package.nix b/pkgs/by-name/pi/picocom/package.nix
index 9e9d1380558a..4a549e27921c 100644
--- a/pkgs/by-name/pi/picocom/package.nix
+++ b/pkgs/by-name/pi/picocom/package.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [
     linenoise
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.IOKit ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.IOKit ];
 
   makeFlags = [
     "HISTFILE=.cache/picocom_history"
diff --git a/pkgs/by-name/pi/picocrypt/package.nix b/pkgs/by-name/pi/picocrypt/package.nix
index 92ddceef7372..d77509135d0e 100644
--- a/pkgs/by-name/pi/picocrypt/package.nix
+++ b/pkgs/by-name/pi/picocrypt/package.nix
@@ -37,7 +37,7 @@ buildGoModule rec {
     # Depends on a vendored, patched GLFW.
     glfw.buildInputs or [ ]
     ++ glfw.propagatedBuildInputs or [ ]
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       gtk3
       xorg.libXxf86vm
     ];
diff --git a/pkgs/by-name/pi/pietrasanta-traceroute/package.nix b/pkgs/by-name/pi/pietrasanta-traceroute/package.nix
index 195ea1ad97b0..2c2b824f8616 100644
--- a/pkgs/by-name/pi/pietrasanta-traceroute/package.nix
+++ b/pkgs/by-name/pi/pietrasanta-traceroute/package.nix
@@ -36,6 +36,6 @@ stdenv.mkDerivation rec {
     mainProgram = "traceroute";
     maintainers = with maintainers; [ nicoo ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/pi/pinocchio/package.nix b/pkgs/by-name/pi/pinocchio/package.nix
index e754078a3805..7284be49df7c 100644
--- a/pkgs/by-name/pi/pinocchio/package.nix
+++ b/pkgs/by-name/pi/pinocchio/package.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   # test failure, ref https://github.com/stack-of-tasks/pinocchio/issues/2277
-  prePatch = lib.optionalString (stdenv.isLinux && stdenv.isAarch64) ''
+  prePatch = lib.optionalString (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) ''
     substituteInPlace unittest/algorithm/utils/CMakeLists.txt \
       --replace-fail "add_pinocchio_unit_test(force)" ""
   '';
diff --git a/pkgs/by-name/pi/pinokio/package.nix b/pkgs/by-name/pi/pinokio/package.nix
index 97b9ad7514e7..f71f7800c462 100644
--- a/pkgs/by-name/pi/pinokio/package.nix
+++ b/pkgs/by-name/pi/pinokio/package.nix
@@ -31,7 +31,7 @@ let
   };
 in
 
-if stdenv.isDarwin then
+if stdenv.hostPlatform.isDarwin then
   stdenv.mkDerivation
   {
     inherit pname version src meta;
diff --git a/pkgs/by-name/pi/pio/package.nix b/pkgs/by-name/pi/pio/package.nix
index 01aa886c3002..f79c12256e23 100644
--- a/pkgs/by-name/pi/pio/package.nix
+++ b/pkgs/by-name/pi/pio/package.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-jVOpk+Z3yEEoDexvxT9I0aVHJKVq47y8km/9ltoqrDA=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Accelerate
   ];
 
diff --git a/pkgs/by-name/pi/piv-agent/package.nix b/pkgs/by-name/pi/piv-agent/package.nix
index d1c35d815341..5a8f25000efc 100644
--- a/pkgs/by-name/pi/piv-agent/package.nix
+++ b/pkgs/by-name/pi/piv-agent/package.nix
@@ -24,10 +24,10 @@ buildGoModule rec {
 
   ldflags = [ "-s" "-w" "-X main.version=${version}" "-X main.shortCommit=${src.rev}" ];
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
 
   buildInputs =
-    if stdenv.isDarwin
+    if stdenv.hostPlatform.isDarwin
     then [ darwin.apple_sdk.frameworks.PCSC ]
     else [ pcsclite ];
 
diff --git a/pkgs/by-name/pi/pixi/package.nix b/pkgs/by-name/pi/pixi/package.nix
index 6c0ed9ebc0e2..85413acc64ed 100644
--- a/pkgs/by-name/pi/pixi/package.nix
+++ b/pkgs/by-name/pi/pixi/package.nix
@@ -39,7 +39,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     libgit2
     openssl
-  ] ++ lib.optionals stdenv.isDarwin (
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk_11_0.frameworks; [ CoreFoundation IOKit SystemConfiguration Security ]
   );
 
@@ -50,7 +50,7 @@ rustPlatform.buildRustPackage rec {
 
   # There are some CI failures with Rattler. Tests on Aarch64 has been skipped.
   # See https://github.com/prefix-dev/pixi/pull/241.
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
 
   preCheck = ''
     export HOME="$(mktemp -d)"
@@ -81,7 +81,7 @@ rustPlatform.buildRustPackage rec {
     "--skip=test_task_with_env"
     "--skip=test_pixi_only_env_activation"
     "--skip=cli::shell_hook::tests::test_environment_json"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--skip=task::task_environment::tests::test_find_ambiguous_task"
     "--skip=task::task_environment::tests::test_find_task_dual_defined"
     "--skip=task::task_environment::tests::test_find_task_explicit_defined"
diff --git a/pkgs/by-name/pi/pizauth/package.nix b/pkgs/by-name/pi/pizauth/package.nix
index 811b74b9724f..31435c52f017 100644
--- a/pkgs/by-name/pi/pizauth/package.nix
+++ b/pkgs/by-name/pi/pizauth/package.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   postInstall = ''
     installShellCompletion --cmd pizauth \
diff --git a/pkgs/by-name/pl/platformsh/package.nix b/pkgs/by-name/pl/platformsh/package.nix
index 683e34a87a0b..730990f103ff 100644
--- a/pkgs/by-name/pl/platformsh/package.nix
+++ b/pkgs/by-name/pl/platformsh/package.nix
@@ -8,11 +8,11 @@
 }:
 
 let versions = lib.importJSON ./versions.json;
-    arch = if stdenvNoCC.isx86_64 then "amd64"
-           else if stdenvNoCC.isAarch64 then "arm64"
+    arch = if stdenvNoCC.hostPlatform.isx86_64 then "amd64"
+           else if stdenvNoCC.hostPlatform.isAarch64 then "arm64"
            else throw "Unsupported architecture";
-    os = if stdenvNoCC.isLinux then "linux"
-         else if stdenvNoCC.isDarwin then "darwin"
+    os = if stdenvNoCC.hostPlatform.isLinux then "linux"
+         else if stdenvNoCC.hostPlatform.isDarwin then "darwin"
          else throw "Unsupported os";
     versionInfo = versions."${os}-${arch}";
     inherit (versionInfo) hash url;
diff --git a/pkgs/by-name/pl/pls/package.nix b/pkgs/by-name/pl/pls/package.nix
index 1db958dcf6be..10463b6c968f 100644
--- a/pkgs/by-name/pl/pls/package.nix
+++ b/pkgs/by-name/pl/pls/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-d6HfIEROudINn2Jbnc3EEDZCD833FFFeUk6mvlu0ErA=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/pm/pmbootstrap/package.nix b/pkgs/by-name/pm/pmbootstrap/package.nix
index a1c3717c2188..cee9a0b13b7e 100644
--- a/pkgs/by-name/pm/pmbootstrap/package.nix
+++ b/pkgs/by-name/pm/pmbootstrap/package.nix
@@ -24,7 +24,7 @@ python3Packages.buildPythonApplication rec {
   pmb_test = "${src}/test";
 
   # Tests depend on sudo
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
 
   build-system = [
     python3Packages.setuptools
diff --git a/pkgs/by-name/po/podman-tui/package.nix b/pkgs/by-name/po/podman-tui/package.nix
index 8841cc3c1320..7f4f84948f3a 100644
--- a/pkgs/by-name/po/podman-tui/package.nix
+++ b/pkgs/by-name/po/podman-tui/package.nix
@@ -16,7 +16,7 @@ buildGoModule rec {
   CGO_ENABLED = 0;
 
   tags = [ "containers_image_openpgp" "remote" ]
-    ++ lib.optional stdenv.isDarwin "darwin";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "darwin";
 
   ldflags = [ "-s" "-w" ];
 
diff --git a/pkgs/by-name/po/poke/package.nix b/pkgs/by-name/po/poke/package.nix
index 6bd5786089ab..0f392f3cbe8d 100644
--- a/pkgs/by-name/po/poke/package.nix
+++ b/pkgs/by-name/po/poke/package.nix
@@ -6,7 +6,7 @@
 , texinfo
 , boehmgc
 , readline
-, nbdSupport ? !stdenv.isDarwin, libnbd
+, nbdSupport ? !stdenv.hostPlatform.isDarwin, libnbd
 , textStylingSupport ? true, gettext
 , dejagnu
 
@@ -86,6 +86,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = lib.licenses.gpl3Plus;
     maintainers = with lib.maintainers; [ AndersonTorres kira-bruneau ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 })
diff --git a/pkgs/by-name/po/portablemc/package.nix b/pkgs/by-name/po/portablemc/package.nix
index c8faf2b492a6..12872711f56a 100644
--- a/pkgs/by-name/po/portablemc/package.nix
+++ b/pkgs/by-name/po/portablemc/package.nix
@@ -17,7 +17,7 @@
   openal,
   udev,
 
-  textToSpeechSupport ? stdenv.isLinux,
+  textToSpeechSupport ? stdenv.hostPlatform.isLinux,
   flite,
 }:
 
diff --git a/pkgs/by-name/pr/presenterm/package.nix b/pkgs/by-name/pr/presenterm/package.nix
index d2915f4f8a13..1ee721828e19 100644
--- a/pkgs/by-name/pr/presenterm/package.nix
+++ b/pkgs/by-name/pr/presenterm/package.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
 
   # Crashes at runtime on darwin with:
   # Library not loaded: .../out/lib/libsixel.1.dylib
-  buildFeatures = lib.optionals (!stdenv.isDarwin) [ "sixel" ];
+  buildFeatures = lib.optionals (!stdenv.hostPlatform.isDarwin) [ "sixel" ];
 
   passthru = {
     updateScript = nix-update-script { };
diff --git a/pkgs/by-name/pr/prismlauncher-unwrapped/package.nix b/pkgs/by-name/pr/prismlauncher-unwrapped/package.nix
index 2a0850069317..e5fb12a80c14 100644
--- a/pkgs/by-name/pr/prismlauncher-unwrapped/package.nix
+++ b/pkgs/by-name/pr/prismlauncher-unwrapped/package.nix
@@ -17,7 +17,7 @@
   zlib,
 
   msaClientID ? null,
-  gamemodeSupport ? stdenv.isLinux,
+  gamemodeSupport ? stdenv.hostPlatform.isLinux,
 }:
 
 let
@@ -30,7 +30,7 @@ let
 in
 
 assert lib.assertMsg (
-  gamemodeSupport -> stdenv.isLinux
+  gamemodeSupport -> stdenv.hostPlatform.isLinux
 ) "gamemodeSupport is only available on Linux.";
 
 stdenv.mkDerivation (finalAttrs: {
@@ -66,10 +66,10 @@ stdenv.mkDerivation (finalAttrs: {
       tomlplusplus
       zlib
     ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Cocoa ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Cocoa ]
     ++ lib.optional gamemodeSupport gamemode;
 
-  hardeningEnable = lib.optionals stdenv.isLinux [ "pie" ];
+  hardeningEnable = lib.optionals stdenv.hostPlatform.isLinux [ "pie" ];
 
   cmakeFlags =
     [
@@ -82,7 +82,7 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optionals (lib.versionOlder kdePackages.qtbase.version "6") [
       (lib.cmakeFeature "Launcher_QT_VERSION_MAJOR" "5")
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # we wrap our binary manually
       (lib.cmakeFeature "INSTALL_BUNDLE" "nodeps")
       # disable built-in updater
diff --git a/pkgs/by-name/pr/prismlauncher/package.nix b/pkgs/by-name/pr/prismlauncher/package.nix
index b58622271b6e..ab9b7144b922 100644
--- a/pkgs/by-name/pr/prismlauncher/package.nix
+++ b/pkgs/by-name/pr/prismlauncher/package.nix
@@ -31,23 +31,23 @@
 
   additionalLibs ? [ ],
   additionalPrograms ? [ ],
-  controllerSupport ? stdenv.isLinux,
-  gamemodeSupport ? stdenv.isLinux,
+  controllerSupport ? stdenv.hostPlatform.isLinux,
+  gamemodeSupport ? stdenv.hostPlatform.isLinux,
   jdks ? [
     jdk21
     jdk17
     jdk8
   ],
   msaClientID ? null,
-  textToSpeechSupport ? stdenv.isLinux,
+  textToSpeechSupport ? stdenv.hostPlatform.isLinux,
 }:
 
 assert lib.assertMsg (
-  controllerSupport -> stdenv.isLinux
+  controllerSupport -> stdenv.hostPlatform.isLinux
 ) "controllerSupport only has an effect on Linux.";
 
 assert lib.assertMsg (
-  textToSpeechSupport -> stdenv.isLinux
+  textToSpeechSupport -> stdenv.hostPlatform.isLinux
 ) "textToSpeechSupport only has an effect on Linux.";
 
 let
@@ -67,7 +67,7 @@ symlinkJoin {
       kdePackages.qtsvg
     ]
     ++ lib.optional (
-      lib.versionAtLeast kdePackages.qtbase.version "6" && stdenv.isLinux
+      lib.versionAtLeast kdePackages.qtbase.version "6" && stdenv.hostPlatform.isLinux
     ) kdePackages.qtwayland;
 
   postBuild = ''
@@ -114,7 +114,7 @@ symlinkJoin {
 
     in
     [ "--prefix PRISMLAUNCHER_JAVA_PATHS : ${lib.makeSearchPath "bin/java" jdks}" ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       "--set LD_LIBRARY_PATH ${addDriverRunpath.driverLink}/lib:${lib.makeLibraryPath runtimeLibs}"
       "--prefix PATH : ${lib.makeBinPath runtimePrograms}"
     ];
diff --git a/pkgs/by-name/pr/probe-rs-tools/package.nix b/pkgs/by-name/pr/probe-rs-tools/package.nix
index 64b014517c63..b072922e732f 100644
--- a/pkgs/by-name/pr/probe-rs-tools/package.nix
+++ b/pkgs/by-name/pr/probe-rs-tools/package.nix
@@ -34,9 +34,9 @@ rustPlatform.buildRustPackage rec {
     # https://github.com/probe-rs/probe-rs/pull/2492
     gitMinimal
     pkg-config
-  ] ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
 
-  buildInputs = [ libusb1 openssl ] ++ lib.optionals stdenv.isDarwin [ AppKit ];
+  buildInputs = [ libusb1 openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ];
 
   checkFlags = [
     # require a physical probe
diff --git a/pkgs/by-name/pr/prometheus-node-exporter/package.nix b/pkgs/by-name/pr/prometheus-node-exporter/package.nix
index 7ddf75a893aa..5f1e9c50cc6b 100644
--- a/pkgs/by-name/pr/prometheus-node-exporter/package.nix
+++ b/pkgs/by-name/pr/prometheus-node-exporter/package.nix
@@ -17,7 +17,7 @@ buildGoModule rec {
   # FIXME: tests fail due to read-only nix store
   doCheck = false;
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ CoreFoundation IOKit ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ CoreFoundation IOKit ]);
 
   excludedPackages = [ "docs/node-mixin" ];
 
diff --git a/pkgs/by-name/pr/proto/package.nix b/pkgs/by-name/pr/proto/package.nix
index 733567311649..dcd22825f736 100644
--- a/pkgs/by-name/pr/proto/package.nix
+++ b/pkgs/by-name/pr/proto/package.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-yPXf6f4dwCaT0nKDWiZ+FIvOyWB/WqiwKi1b/rBtNIQ=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
     libiconv
   ];
diff --git a/pkgs/by-name/pr/protoc-gen-js/package.nix b/pkgs/by-name/pr/protoc-gen-js/package.nix
index 5f3a592e0faa..debf368cdf19 100644
--- a/pkgs/by-name/pr/protoc-gen-js/package.nix
+++ b/pkgs/by-name/pr/protoc-gen-js/package.nix
@@ -17,7 +17,7 @@ buildBazelPackage rec {
   removeRulesCC = false;
   removeLocalConfigCC = false;
 
-  LIBTOOL = lib.optionalString stdenv.isDarwin "${cctools}/bin/libtool";
+  LIBTOOL = lib.optionalString stdenv.hostPlatform.isDarwin "${cctools}/bin/libtool";
 
   fetchAttrs.hash = "sha256-WOBlZ0XNrl5UxIaSDxZeOfzS2a8ZkrKdTLKHBDC9UNQ=";
 
diff --git a/pkgs/by-name/pr/protonmail-desktop/package.nix b/pkgs/by-name/pr/protonmail-desktop/package.nix
index 2d937677045d..a5dd3ce319f8 100644
--- a/pkgs/by-name/pr/protonmail-desktop/package.nix
+++ b/pkgs/by-name/pr/protonmail-desktop/package.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url =
-      if stdenv.isDarwin then
+      if stdenv.hostPlatform.isDarwin then
         "https://github.com/ProtonMail/inbox-desktop/releases/download/${version}/Proton.Mail-darwin-universal-${version}.zip"
       else
         "https://github.com/ProtonMail/inbox-desktop/releases/download/${version}/proton-mail_${version}_amd64.deb";
@@ -38,14 +38,14 @@ stdenv.mkDerivation rec {
       .${stdenv.hostPlatform.system} or (throw "unsupported system ${stdenv.hostPlatform.system}");
   };
 
-  sourceRoot = lib.optionalString stdenv.isDarwin ".";
+  sourceRoot = lib.optionalString stdenv.hostPlatform.isDarwin ".";
 
   dontConfigure = true;
   dontBuild = true;
 
   nativeBuildInputs = [
     makeWrapper
-  ] ++ lib.optional stdenv.isLinux dpkg ++ lib.optional stdenv.isDarwin unzip;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux dpkg ++ lib.optional stdenv.hostPlatform.isDarwin unzip;
 
   installPhase =
     let
@@ -65,12 +65,12 @@ stdenv.mkDerivation rec {
     ''
       runHook preInstall
 
-      ${if stdenv.isDarwin then darwin else linux}
+      ${if stdenv.hostPlatform.isDarwin then darwin else linux}
 
       runHook postInstall
     '';
 
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     makeWrapper ${lib.getExe electron} $out/bin/${mainProgram} \
       --add-flags $out/share/app.asar \
       --add-flags "\''${NIXOS_OZONE_WL:+\''${WAYLAND_DISPLAY:+--ozone-platform-hint=auto --enable-features=WaylandWindowDecorations}}" \
diff --git a/pkgs/by-name/pr/prr/package.nix b/pkgs/by-name/pr/prr/package.nix
index 46576e1a1822..ba07cd6fe0c9 100644
--- a/pkgs/by-name/pr/prr/package.nix
+++ b/pkgs/by-name/pr/prr/package.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-vCZjgmBYO+I6MZLCOMp50bWEeHwLbZsxSz5gRmBykvI=";
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/pt/pterm/package.nix b/pkgs/by-name/pt/pterm/package.nix
index c0d96e44f124..463a05ac0697 100644
--- a/pkgs/by-name/pt/pterm/package.nix
+++ b/pkgs/by-name/pt/pterm/package.nix
@@ -43,6 +43,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ sarcasticadmin ];
     mainProgram = "pterm";
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/pw/pwndbg/package.nix b/pkgs/by-name/pw/pwndbg/package.nix
index bad009b07ab2..5c612e7bfaa9 100644
--- a/pkgs/by-name/pw/pwndbg/package.nix
+++ b/pkgs/by-name/pw/pwndbg/package.nix
@@ -12,7 +12,7 @@ let
 
   binPath = lib.makeBinPath ([
     python3.pkgs.pwntools # ref: https://github.com/pwndbg/pwndbg/blob/2022.12.19/pwndbg/wrappers/checksec.py#L8
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     python3.pkgs.ropper # ref: https://github.com/pwndbg/pwndbg/blob/2022.12.19/pwndbg/commands/ropper.py#L30
     python3.pkgs.ropgadget # ref: https://github.com/pwndbg/pwndbg/blob/2022.12.19/pwndbg/commands/rop.py#L32
   ]);
@@ -64,6 +64,6 @@ stdenv.mkDerivation {
     platforms = platforms.all;
     maintainers = with maintainers; [ mic92 patryk4815 msanft ];
     # not supported on aarch64-darwin see: https://inbox.sourceware.org/gdb/3185c3b8-8a91-4beb-a5d5-9db6afb93713@Spark/
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/by-name/py/pylyzer/package.nix b/pkgs/by-name/py/pylyzer/package.nix
index 6646a3b6d0b7..14b6608113d3 100644
--- a/pkgs/by-name/py/pylyzer/package.nix
+++ b/pkgs/by-name/py/pylyzer/package.nix
@@ -36,9 +36,9 @@ rustPlatform.buildRustPackage rec {
     git
     python3
     makeWrapper
-  ] ++ lib.optionals stdenv.isDarwin [ (writeScriptBin "diskutil" "") ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ (writeScriptBin "diskutil" "") ];
 
-  buildInputs = [ python3 ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = [ python3 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   preBuild = ''
     export HOME=$TMPDIR
diff --git a/pkgs/by-name/py/pyxel/package.nix b/pkgs/by-name/py/pyxel/package.nix
index 23a7836164e4..1103dbba4619 100644
--- a/pkgs/by-name/py/pyxel/package.nix
+++ b/pkgs/by-name/py/pyxel/package.nix
@@ -46,7 +46,7 @@ python3.pkgs.buildPythonApplication rec {
 
   buildInputs =
     [ SDL2 ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       darwin.apple_sdk.frameworks.IOKit
     ];
diff --git a/pkgs/by-name/qg/qgrep/package.nix b/pkgs/by-name/qg/qgrep/package.nix
index 57c3d20db283..f485aa0d9147 100644
--- a/pkgs/by-name/qg/qgrep/package.nix
+++ b/pkgs/by-name/qg/qgrep/package.nix
@@ -25,12 +25,12 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.CoreFoundation
   ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-Wno-error=unused-command-line-argument"
     "-Wno-error=unqualified-std-cast-call"
   ]);
diff --git a/pkgs/by-name/qs/qsv/package.nix b/pkgs/by-name/qs/qsv/package.nix
index ba0280c19bd8..c59ad323f86b 100644
--- a/pkgs/by-name/qs/qsv/package.nix
+++ b/pkgs/by-name/qs/qsv/package.nix
@@ -41,7 +41,7 @@ rustPlatform.buildRustPackage {
       sqlite
       zstd
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         AppKit
diff --git a/pkgs/by-name/qt/qtalarm/package.nix b/pkgs/by-name/qt/qtalarm/package.nix
index f66c1040e5a2..457e6d1659c0 100644
--- a/pkgs/by-name/qt/qtalarm/package.nix
+++ b/pkgs/by-name/qt/qtalarm/package.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation (finalAttrs: {
       runHook preInstall
     ''
     + (
-      if stdenv.isDarwin then
+      if stdenv.hostPlatform.isDarwin then
         ''
           mkdir -p $out/Applications
           mv qtalarm.app $out/Applications
diff --git a/pkgs/by-name/qu/quickemu/package.nix b/pkgs/by-name/qu/quickemu/package.nix
index 35ffc1694fef..cfd3838c9c51 100644
--- a/pkgs/by-name/qu/quickemu/package.nix
+++ b/pkgs/by-name/qu/quickemu/package.nix
@@ -48,7 +48,7 @@ let
       xrandr
       zsync
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       mesa-demos
       usbutils
       xdg-user-dirs
diff --git a/pkgs/by-name/qu/quickjs-ng/package.nix b/pkgs/by-name/qu/quickjs-ng/package.nix
index 35a71244cab6..6e434e9d9a99 100644
--- a/pkgs/by-name/qu/quickjs-ng/package.nix
+++ b/pkgs/by-name/qu/quickjs-ng/package.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.cmakeBool "BUILD_STATIC_QJS_EXE" stdenv.hostPlatform.isStatic)
   ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
     "-Wno-error=stringop-overflow"
   ]);
 
diff --git a/pkgs/by-name/qu/quickjs/package.nix b/pkgs/by-name/qu/quickjs/package.nix
index 447f486a0914..1366fd03cd55 100644
--- a/pkgs/by-name/qu/quickjs/package.nix
+++ b/pkgs/by-name/qu/quickjs/package.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-PEv4+JW/pUvrSGyNEhgRJ3Hs/FrDvhA2hR70FWghLgM=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile --replace "CONFIG_LTO=y" ""
   '';
 
diff --git a/pkgs/by-name/r0/r0vm/package.nix b/pkgs/by-name/r0/r0vm/package.nix
index 36789e41921b..e47a41260b60 100644
--- a/pkgs/by-name/r0/r0vm/package.nix
+++ b/pkgs/by-name/r0/r0vm/package.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl.dev
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/by-name/ra/rage/package.nix b/pkgs/by-name/ra/rage/package.nix
index a6024ace3176..0c41c5a55368 100644
--- a/pkgs/by-name/ra/rage/package.nix
+++ b/pkgs/by-name/ra/rage/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
     installShellFiles
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/by-name/ra/railway/package.nix b/pkgs/by-name/ra/railway/package.nix
index 2e7cf3d90e05..ce17913cd06b 100644
--- a/pkgs/by-name/ra/railway/package.nix
+++ b/pkgs/by-name/ra/railway/package.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreServices
       Security
       SystemConfiguration
diff --git a/pkgs/by-name/ra/raspberrypi-eeprom/package.nix b/pkgs/by-name/ra/raspberrypi-eeprom/package.nix
index 8f46010cce05..5d4580e46f25 100644
--- a/pkgs/by-name/ra/raspberrypi-eeprom/package.nix
+++ b/pkgs/by-name/ra/raspberrypi-eeprom/package.nix
@@ -48,7 +48,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     for i in rpi-eeprom-update rpi-eeprom-config; do
       wrapProgram $out/bin/$i \
         --set FIRMWARE_ROOT "$out/lib/firmware/raspberrypi/bootloader" \
-        ${lib.optionalString stdenvNoCC.isAarch64 "--set VCMAILBOX ${libraspberrypi}/bin/vcmailbox"} \
+        ${lib.optionalString stdenvNoCC.hostPlatform.isAarch64 "--set VCMAILBOX ${libraspberrypi}/bin/vcmailbox"} \
         --prefix PATH : "${lib.makeBinPath ([
           binutils-unwrapped
           findutils
@@ -56,7 +56,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
           kmod
           pciutils
           (placeholder "out")
-        ] ++ lib.optionals stdenvNoCC.isAarch64 [
+        ] ++ lib.optionals stdenvNoCC.hostPlatform.isAarch64 [
           libraspberrypi
         ])}"
     done
diff --git a/pkgs/by-name/ra/rathole/package.nix b/pkgs/by-name/ra/rathole/package.nix
index 38d163daf8d8..51bc1cfedd55 100644
--- a/pkgs/by-name/ra/rathole/package.nix
+++ b/pkgs/by-name/ra/rathole/package.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ CoreServices ]);
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ CoreServices ]);
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/by-name/ra/rav1e/package.nix b/pkgs/by-name/ra/rav1e/package.nix
index 50cf9bef9e1e..e8834ac131e4 100644
--- a/pkgs/by-name/ra/rav1e/package.nix
+++ b/pkgs/by-name/ra/rav1e/package.nix
@@ -37,14 +37,14 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ zlib ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       darwin.apple_sdk.frameworks.Security
     ];
 
   # Darwin uses `llvm-strip`, which results in link errors when using `-x` to strip the asm library
   # and linking it with cctools ld64.
-  postPatch = lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) ''
+  postPatch = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) ''
     substituteInPlace build.rs --replace-fail '.arg("-x")' '.arg("-S")'
     # Thin LTO doesn’t appear to work with Rust 1.79. rav1e fail to build when building fern.
     substituteInPlace Cargo.toml --replace-fail 'lto = "thin"' 'lto = "fat"'
diff --git a/pkgs/by-name/rc/rcp/package.nix b/pkgs/by-name/rc/rcp/package.nix
index bafdf95b073f..bc4be1730178 100644
--- a/pkgs/by-name/rc/rcp/package.nix
+++ b/pkgs/by-name/rc/rcp/package.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-INLXVruiaK5yv5old0NOWFcg9y13M6Dm7bBMmcPFY1I=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     IOKit
   ]);
 
@@ -37,6 +37,6 @@ rustPlatform.buildRustPackage rec {
     mainProgram = "rcp";
     maintainers = with maintainers; [ wykurz ];
     # = note: Undefined symbols for architecture x86_64: "_utimensat"
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 }
diff --git a/pkgs/by-name/re/realm/package.nix b/pkgs/by-name/re/realm/package.nix
index e76189e1ac8d..34914df2987e 100644
--- a/pkgs/by-name/re/realm/package.nix
+++ b/pkgs/by-name/re/realm/package.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-EvXafTujqTdQwfK4NXgT7lGKGnrpyP9ouplD6DmJUKU=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/re/realvnc-vnc-viewer/package.nix b/pkgs/by-name/re/realvnc-vnc-viewer/package.nix
index 6e1dc6762b14..d6a916df0ae0 100644
--- a/pkgs/by-name/re/realvnc-vnc-viewer/package.nix
+++ b/pkgs/by-name/re/realvnc-vnc-viewer/package.nix
@@ -20,5 +20,5 @@ let
     mainProgram = "vncviewer";
   };
 in
-if stdenv.isDarwin then callPackage ./darwin.nix { inherit pname version meta; }
+if stdenv.hostPlatform.isDarwin then callPackage ./darwin.nix { inherit pname version meta; }
 else callPackage ./linux.nix { inherit pname version meta; }
diff --git a/pkgs/by-name/re/redict/package.nix b/pkgs/by-name/re/redict/package.nix
index 54820d6eb096..a916cfcd3ba7 100644
--- a/pkgs/by-name/re/redict/package.nix
+++ b/pkgs/by-name/re/redict/package.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optional withSystemd systemd
     ++ lib.optionals tlsSupport [ openssl ];
 
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/Makefile --replace "-flto" ""
   '';
 
@@ -49,12 +49,12 @@ stdenv.mkDerivation (finalAttrs: {
 
   enableParallelBuilding = true;
 
-  hardeningEnable = lib.optionals (!stdenv.isDarwin) [ "pie" ];
+  hardeningEnable = lib.optionals (!stdenv.hostPlatform.isDarwin) [ "pie" ];
 
   env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.cc.isClang [ "-std=c11" ]);
 
   # darwin currently lacks a pure `pgrep` which is extensively used here
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   nativeCheckInputs = [ which tcl ps ] ++ lib.optionals stdenv.hostPlatform.isStatic [ getconf ];
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/by-name/re/redlib/package.nix b/pkgs/by-name/re/redlib/package.nix
index c1c661a9a330..51c80078e372 100644
--- a/pkgs/by-name/re/redlib/package.nix
+++ b/pkgs/by-name/re/redlib/package.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-XSmeJAK18J9WxrG5orFbAB9hWVLQQ50oB223oHT3OOk=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/re/refind/package.nix b/pkgs/by-name/re/refind/package.nix
index 9c4cda573e58..2958d3be85fd 100644
--- a/pkgs/by-name/re/refind/package.nix
+++ b/pkgs/by-name/re/refind/package.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
       "EFICRT0=${gnu-efi}/lib"
       "HOSTARCH=${hostarch}"
       "ARCH=${hostarch}"
-    ] ++ lib.optional stdenv.isAarch64 [
+    ] ++ lib.optional stdenv.hostPlatform.isAarch64 [
       # aarch64 is special for GNU-EFI, see BUILDING.txt
       "GNUEFI_ARM64_TARGET_SUPPORT=y"
     ];
diff --git a/pkgs/by-name/re/refinery-cli/package.nix b/pkgs/by-name/re/refinery-cli/package.nix
index c70e69bee988..59a5dd255ba6 100644
--- a/pkgs/by-name/re/refinery-cli/package.nix
+++ b/pkgs/by-name/re/refinery-cli/package.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   meta = with lib; {
     description = "Run migrations for the Refinery ORM for Rust via the CLI";
diff --git a/pkgs/by-name/re/release-plz/package.nix b/pkgs/by-name/re/release-plz/package.nix
index da5b97c8ef47..d176accf9d56 100644
--- a/pkgs/by-name/re/release-plz/package.nix
+++ b/pkgs/by-name/re/release-plz/package.nix
@@ -41,6 +41,6 @@ rustPlatform.buildRustPackage rec {
     license = with lib.licenses; [ asl20 mit ];
     maintainers = with lib.maintainers; [ dannixon ];
     mainProgram = "release-plz";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/re/remind/package.nix b/pkgs/by-name/re/remind/package.nix
index 78ae694b1659..2f630416995b 100644
--- a/pkgs/by-name/re/remind/package.nix
+++ b/pkgs/by-name/re/remind/package.nix
@@ -38,7 +38,7 @@ tcl.mkTclDerivation rec {
       --replace-fail 'set Rem2PDF "rem2pdf"' "set Rem2PDF \"$out/bin/rem2pdf\""
   '';
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin (toString [
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin (toString [
     # On Darwin setenv and unsetenv are defined in stdlib.h from libSystem
     "-DHAVE_SETENV"
     "-DHAVE_UNSETENV"
diff --git a/pkgs/by-name/re/rerun/package.nix b/pkgs/by-name/re/rerun/package.nix
index 84324b4bb084..41d4f7828884 100644
--- a/pkgs/by-name/re/rerun/package.nix
+++ b/pkgs/by-name/re/rerun/package.nix
@@ -61,7 +61,7 @@ rustPlatform.buildRustPackage rec {
       libxkbcommon
       vulkan-loader
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.AppKit
       darwin.apple_sdk.frameworks.CoreFoundation
       darwin.apple_sdk.frameworks.CoreGraphics
@@ -72,7 +72,7 @@ rustPlatform.buildRustPackage rec {
       darwin.apple_sdk.frameworks.QuartzCore
       darwin.apple_sdk.frameworks.Security
     ]
-    ++ lib.optionals stdenv.isLinux [ (lib.getLib wayland) ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ (lib.getLib wayland) ];
 
   addDlopenRunpaths = map (p: "${lib.getLib p}/lib") (
     lib.optionals stdenv.hostPlatform.isLinux [
diff --git a/pkgs/by-name/re/retool/package.nix b/pkgs/by-name/re/retool/package.nix
index a22ce582b9eb..15e2c15a5e85 100644
--- a/pkgs/by-name/re/retool/package.nix
+++ b/pkgs/by-name/re/retool/package.nix
@@ -29,7 +29,7 @@ python3.pkgs.buildPythonApplication rec {
   buildInputs = [
     qt6.qtbase
   ] ++
-  lib.optionals (stdenv.isLinux) [
+  lib.optionals (stdenv.hostPlatform.isLinux) [
     qt6.qtwayland
   ];
 
diff --git a/pkgs/by-name/re/revolt-desktop/package.nix b/pkgs/by-name/re/revolt-desktop/package.nix
index 7d8f0842a7a3..f941225770b2 100644
--- a/pkgs/by-name/re/revolt-desktop/package.nix
+++ b/pkgs/by-name/re/revolt-desktop/package.nix
@@ -31,7 +31,7 @@
     let
       inherit (prev) pname version;
     in
-    if stdenvNoCC.isLinux then
+    if stdenvNoCC.hostPlatform.isLinux then
       {
         src = fetchurl {
           url = "https://github.com/revoltchat/desktop/releases/download/v${version}/Revolt-linux.AppImage";
@@ -64,7 +64,7 @@
         '';
       }
     else
-      assert stdenvNoCC.isDarwin;
+      assert stdenvNoCC.hostPlatform.isDarwin;
       {
         src = fetchzip {
           url = "https://github.com/revoltchat/desktop/releases/download/v${version}/Revolt-${version}-mac.zip";
diff --git a/pkgs/by-name/ri/ride/package.nix b/pkgs/by-name/ri/ride/package.nix
index 9706b388dbf7..8c9f239dc1d8 100644
--- a/pkgs/by-name/ri/ride/package.nix
+++ b/pkgs/by-name/ri/ride/package.nix
@@ -89,14 +89,14 @@ buildNpmPackage rec {
       zip
       makeWrapper
     ]
-    ++ lib.optionals (!stdenv.isDarwin) [ copyDesktopItems ]
-    ++ lib.optionals stdenv.isDarwin [ cctools ];
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ copyDesktopItems ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools ];
 
   env.ELECTRON_SKIP_BINARY_DOWNLOAD = "1";
 
   # Fix error: no member named 'aligned_alloc' in the global namespace
   env.NIX_CFLAGS_COMPILE = lib.optionalString (
-    stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "11.0"
+    stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "11.0"
   ) "-D_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION=1";
 
   npmBuildFlags = platformInfo.buildCmd;
@@ -122,7 +122,7 @@ buildNpmPackage rec {
 
     install -Dm644 ThirdPartyNotices.txt -t $out/share/doc/ride
 
-    ${lib.optionalString (!stdenv.isDarwin) ''
+    ${lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       install -Dm644 $src/D.png $out/share/icons/hicolor/64x64/apps/ride.png
       install -Dm644 $src/D.svg $out/share/icons/hicolor/scalable/apps/ride.svg
 
@@ -134,7 +134,7 @@ buildNpmPackage rec {
           --inherit-argv0
     ''}
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/Applications
       cp -r Ride-*.app $out/Applications
       makeWrapper $out/Applications/Ride-*.app/Contents/MacOS/Ride-* $out/bin/ride
diff --git a/pkgs/by-name/ri/ringfairy/package.nix b/pkgs/by-name/ri/ringfairy/package.nix
index 1b4295d1f634..67563b58315c 100644
--- a/pkgs/by-name/ri/ringfairy/package.nix
+++ b/pkgs/by-name/ri/ringfairy/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs =
     [openssl]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks; [
         Security
         SystemConfiguration
diff --git a/pkgs/by-name/ri/ripunzip/package.nix b/pkgs/by-name/ri/ripunzip/package.nix
index 41d0594ebd5f..b8dfd3ff9c96 100644
--- a/pkgs/by-name/ri/ripunzip/package.nix
+++ b/pkgs/by-name/ri/ripunzip/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-QyVhEHm1W4kb5b4dngBui3lT7vKBGDS5ZObMWua96KM=";
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
   nativeBuildInputs = [ pkg-config ];
 
   setupHook = ./setup-hook.sh;
diff --git a/pkgs/by-name/rk/rkboot/package.nix b/pkgs/by-name/rk/rkboot/package.nix
index 5cf424a43c3a..f352446e7a1b 100644
--- a/pkgs/by-name/rk/rkboot/package.nix
+++ b/pkgs/by-name/rk/rkboot/package.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
     do
       # The proprietary, statically linked binaries to perform boot_merge are
       # x86_64 only. Though we use box64 to emulate if building on aarch64-linux
-      ${lib.optionalString stdenv.isAarch64 "${qemu}/bin/qemu-x86_64"} ./tools/boot_merger "$i" || true
+      ${lib.optionalString stdenv.hostPlatform.isAarch64 "${qemu}/bin/qemu-x86_64"} ./tools/boot_merger "$i" || true
     done
   '';
 
diff --git a/pkgs/by-name/rl/rl_json/package.nix b/pkgs/by-name/rl/rl_json/package.nix
index 81076dd07677..ac6e7950f411 100644
--- a/pkgs/by-name/rl/rl_json/package.nix
+++ b/pkgs/by-name/rl/rl_json/package.nix
@@ -41,6 +41,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with lib.maintainers; [ fgaz ];
     platforms = tcl.meta.platforms;
     # From version 0.15.1: 'endian.h' file not found
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/rm/rmg/package.nix b/pkgs/by-name/rm/rmg/package.nix
index 4dd9ac30d648..50c6e4306ffe 100644
--- a/pkgs/by-name/rm/rmg/package.nix
+++ b/pkgs/by-name/rm/rmg/package.nix
@@ -73,7 +73,7 @@ stdenv.mkDerivation rec {
     "-DUSE_ANGRYLION=${lib.boolToString withAngrylionRdpPlus}"
   ];
 
-  qtWrapperArgs = lib.optionals stdenv.isLinux [
+  qtWrapperArgs = lib.optionals stdenv.hostPlatform.isLinux [
     "--prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [ vulkan-loader ]}"
   ] ++ lib.optional withWayland "--set RMG_WAYLAND 1";
 
diff --git a/pkgs/by-name/rn/rnote/package.nix b/pkgs/by-name/rn/rnote/package.nix
index 792c9faa0450..e2c569131ee2 100644
--- a/pkgs/by-name/rn/rnote/package.nix
+++ b/pkgs/by-name/rn/rnote/package.nix
@@ -75,9 +75,9 @@ stdenv.mkDerivation rec {
     libadwaita
     libxml2
     poppler
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AudioUnit
   ];
 
@@ -94,6 +94,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ dotlambda gepbird yrd ];
     platforms = platforms.unix;
     # compiler error since 2023-11-17
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/ro/robodoc/package.nix b/pkgs/by-name/ro/robodoc/package.nix
index bc64a8315fe3..466554811720 100644
--- a/pkgs/by-name/ro/robodoc/package.nix
+++ b/pkgs/by-name/ro/robodoc/package.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-l3prSdaGhOvXmZfCPbsZJNocO7y20zJjLQpajRTJOqE=";
   };
 
-  postConfigure = lib.optionalString stdenv.isDarwin ''
+  postConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Docs/makefile.am \
       --replace 'man1_MANS = robodoc.1 robohdrs.1' 'man1_MANS ='
   '';
diff --git a/pkgs/by-name/ro/rootbar/package.nix b/pkgs/by-name/ro/rootbar/package.nix
index a528cd4a94ad..1901a33f11ff 100644
--- a/pkgs/by-name/ro/rootbar/package.nix
+++ b/pkgs/by-name/ro/rootbar/package.nix
@@ -42,6 +42,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ AndersonTorres ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/ro/routinator/package.nix b/pkgs/by-name/ro/routinator/package.nix
index e7199164ddd7..14adef52117a 100644
--- a/pkgs/by-name/ro/routinator/package.nix
+++ b/pkgs/by-name/ro/routinator/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-1JxAbQPCQqDVry3wGIdY4q18rzCXlJ7Dnc8LIvhkW1g=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
 
   meta = with lib; {
     description = "RPKI Validator written in Rust";
diff --git a/pkgs/by-name/rp/rpi-imager/package.nix b/pkgs/by-name/rp/rpi-imager/package.nix
index 05a893cd0536..39a07b53d3c3 100644
--- a/pkgs/by-name/rp/rpi-imager/package.nix
+++ b/pkgs/by-name/rp/rpi-imager/package.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation (finalAttrs: {
       qt5.qttools
       xz
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       qt5.qtwayland
     ];
 
@@ -81,6 +81,6 @@ stdenv.mkDerivation (finalAttrs: {
     ];
     platforms = platforms.all;
     # does not build on darwin
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/rq/rqbit/package.nix b/pkgs/by-name/rq/rqbit/package.nix
index d02fe269203b..bdd27f02a896 100644
--- a/pkgs/by-name/rq/rqbit/package.nix
+++ b/pkgs/by-name/rq/rqbit/package.nix
@@ -18,10 +18,10 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   doCheck = false;
 
diff --git a/pkgs/by-name/rr/rrdtool/package.nix b/pkgs/by-name/rr/rrdtool/package.nix
index 733b981e4247..1a66700b17d9 100644
--- a/pkgs/by-name/rr/rrdtool/package.nix
+++ b/pkgs/by-name/rr/rrdtool/package.nix
@@ -28,7 +28,7 @@ perl.pkgs.toPerlModule (
     };
 
     # Fix darwin build
-    patches = lib.optional stdenv.isDarwin (fetchpatch {
+    patches = lib.optional stdenv.hostPlatform.isDarwin (fetchpatch {
       url = "https://github.com/oetiker/rrdtool-1.x/pull/1262.patch";
       hash = "sha256-aP0rmDlILn6VC8Tg7HpRXbxL9+KD/PRTbXnbQ7HgPEg=";
     });
@@ -47,7 +47,7 @@ perl.pkgs.toPerlModule (
         cairo
         groff
       ]
-      ++ lib.optionals stdenv.isDarwin [
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [
         tcl
         darwin.apple_sdk.frameworks.ApplicationServices
       ];
diff --git a/pkgs/by-name/rs/rs/package.nix b/pkgs/by-name/rs/rs/package.nix
index 5edd417375e7..ab5e4fcb4ddd 100644
--- a/pkgs/by-name/rs/rs/package.nix
+++ b/pkgs/by-name/rs/rs/package.nix
@@ -68,6 +68,6 @@ stdenv.mkDerivation rec {
     license = licenses.bsd3;
     maintainers = with maintainers; [ AndersonTorres ];
     platforms = platforms.unix;
-    broken = stdenv.isx86_64 && stdenv.isDarwin; # missing strtonum()
+    broken = stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.isDarwin; # missing strtonum()
   };
 }
diff --git a/pkgs/by-name/rt/rtl_fm_streamer/package.nix b/pkgs/by-name/rt/rtl_fm_streamer/package.nix
index 3e3fcde3b5f9..beb45686508a 100644
--- a/pkgs/by-name/rt/rtl_fm_streamer/package.nix
+++ b/pkgs/by-name/rt/rtl_fm_streamer/package.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   cmakeFlags = [
-    (lib.cmakeBool "INSTALL_UDEV_RULES" stdenv.isLinux)
+    (lib.cmakeBool "INSTALL_UDEV_RULES" stdenv.hostPlatform.isLinux)
   ];
 
   meta = {
@@ -45,6 +45,6 @@ stdenv.mkDerivation (finalAttrs: {
     homepage = "https://github.com/AlbrechtL/rtl_fm_streamer";
     license = lib.licenses.gpl2Plus;
     maintainers = with lib.maintainers; [ doronbehar ];
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 })
diff --git a/pkgs/by-name/ru/ruff-lsp/package.nix b/pkgs/by-name/ru/ruff-lsp/package.nix
index 7048c95859c8..344dce7755c6 100644
--- a/pkgs/by-name/ru/ruff-lsp/package.nix
+++ b/pkgs/by-name/ru/ruff-lsp/package.nix
@@ -40,7 +40,7 @@ python3.pkgs.buildPythonApplication rec {
   ];
 
   # fails in linux sandbox
-  doCheck = stdenv.isDarwin;
+  doCheck = stdenv.hostPlatform.isDarwin;
 
   nativeCheckInputs = with python3.pkgs; [
     pytestCheckHook
diff --git a/pkgs/by-name/ru/ruff/package.nix b/pkgs/by-name/ru/ruff/package.nix
index ab16ddf240d7..67099b3ecde1 100644
--- a/pkgs/by-name/ru/ruff/package.nix
+++ b/pkgs/by-name/ru/ruff/package.nix
@@ -35,7 +35,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     rust-jemalloc-sys
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
 
   postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
     installShellCompletion --cmd ruff \
@@ -53,7 +53,7 @@ rustPlatform.buildRustPackage rec {
   # Failing on darwin for an unclear reason.
   # According to the maintainers, those tests are from an experimental crate that isn't actually
   # used by ruff currently and can thus be safely skipped.
-  checkFlags = lib.optionals stdenv.isDarwin [
+  checkFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "--skip=changed_file"
     "--skip=changed_metadata"
     "--skip=changed_versions_file"
diff --git a/pkgs/by-name/ru/rustdesk/package.nix b/pkgs/by-name/ru/rustdesk/package.nix
index 5b838d39cff8..b038c6c38333 100644
--- a/pkgs/by-name/ru/rustdesk/package.nix
+++ b/pkgs/by-name/ru/rustdesk/package.nix
@@ -106,7 +106,7 @@ rustPlatform.buildRustPackage rec {
     wrapGAppsHook3
   ];
 
-  buildFeatures = lib.optionals stdenv.isLinux [ "linux-pkg-config" ];
+  buildFeatures = lib.optionals stdenv.hostPlatform.isLinux [ "linux-pkg-config" ];
 
   # Checks require an active X server
   doCheck = false;
@@ -136,7 +136,7 @@ rustPlatform.buildRustPackage rec {
       zlib
       zstd
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         AppKit
@@ -149,7 +149,7 @@ rustPlatform.buildRustPackage rec {
         SystemConfiguration
       ]
     )
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       alsa-lib
       xdotool
     ];
@@ -161,7 +161,7 @@ rustPlatform.buildRustPackage rec {
 
     # .so needs to be next to the executable
     mv $out/bin/rustdesk $out/lib/rustdesk
-    ${lib.optionalString stdenv.isLinux "ln -s ${libsciter}/lib/libsciter-gtk.so $out/lib/rustdesk"}
+    ${lib.optionalString stdenv.hostPlatform.isLinux "ln -s ${libsciter}/lib/libsciter-gtk.so $out/lib/rustdesk"}
 
     makeWrapper $out/lib/rustdesk/rustdesk $out/bin/rustdesk \
       --chdir "$out/share"
@@ -171,7 +171,7 @@ rustPlatform.buildRustPackage rec {
     install -Dm0644 $src/res/logo.svg $out/share/icons/hicolor/scalable/apps/rustdesk.svg
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --add-rpath "${libayatana-appindicator}/lib" "$out/lib/rustdesk/rustdesk"
   '';
 
diff --git a/pkgs/by-name/ru/rusti-cal/package.nix b/pkgs/by-name/ru/rusti-cal/package.nix
index 97b5e107314d..f03783cbc5e2 100644
--- a/pkgs/by-name/ru/rusti-cal/package.nix
+++ b/pkgs/by-name/ru/rusti-cal/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-5eS+OMaNAVNyDMKFNfb0J0rLsikw2LCXhWk7MS9UV2k=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/by-name/ru/rustic/package.nix b/pkgs/by-name/ru/rustic/package.nix
index 2578991fc8f4..14f1c30ace13 100644
--- a/pkgs/by-name/ru/rustic/package.nix
+++ b/pkgs/by-name/ru/rustic/package.nix
@@ -34,7 +34,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     SystemConfiguration
   ];
diff --git a/pkgs/by-name/ru/rustlings/package.nix b/pkgs/by-name/ru/rustlings/package.nix
index b66d2ced7e12..2d51df275234 100644
--- a/pkgs/by-name/ru/rustlings/package.nix
+++ b/pkgs/by-name/ru/rustlings/package.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage {
     makeWrapper
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ CoreServices ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ CoreServices ]);
 
   postFixup = ''
     wrapProgram $out/bin/rustlings --suffix PATH : ${
diff --git a/pkgs/by-name/ru/rustls-ffi/package.nix b/pkgs/by-name/ru/rustls-ffi/package.nix
index 015a3b9a72c9..e5317b40b78c 100644
--- a/pkgs/by-name/ru/rustls-ffi/package.nix
+++ b/pkgs/by-name/ru/rustls-ffi/package.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-gDQ9AFrJuV7SrzKCAHQBkKj6clXuPLO0DHhnvcBqRLs=";
   };
 
-  propagatedBuildInputs = lib.optionals stdenv.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
 
   nativeBuildInputs = [ cargo rustPlatform.cargoSetupHook cargo-c validatePkgConfig ];
 
diff --git a/pkgs/by-name/ru/rustmission/package.nix b/pkgs/by-name/ru/rustmission/package.nix
index 8e8a21d8596b..241a0b71dc63 100644
--- a/pkgs/by-name/ru/rustmission/package.nix
+++ b/pkgs/by-name/ru/rustmission/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/ry/rye/package.nix b/pkgs/by-name/ry/rye/package.nix
index 3719ae8988e8..c04802847f16 100644
--- a/pkgs/by-name/ry/rye/package.nix
+++ b/pkgs/by-name/ry/rye/package.nix
@@ -48,7 +48,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk;
       [
         frameworks.CoreServices
diff --git a/pkgs/by-name/s3/s3proxy/package.nix b/pkgs/by-name/s3/s3proxy/package.nix
index 72f18af79cc1..d24f3728da11 100644
--- a/pkgs/by-name/s3/s3proxy/package.nix
+++ b/pkgs/by-name/s3/s3proxy/package.nix
@@ -21,7 +21,7 @@ maven.buildMavenPackage {
     hash = "sha256-GhZPvo8wlXInHwg8rSmpwMMkZVw5SMpnZyKqFUYLbrE=";
   };
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   nativeBuildInputs = [ makeWrapper ];
 
diff --git a/pkgs/by-name/sa/saga/package.nix b/pkgs/by-name/sa/saga/package.nix
index 43af7ef6b649..ae4670a002bb 100644
--- a/pkgs/by-name/sa/saga/package.nix
+++ b/pkgs/by-name/sa/saga/package.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     cmake
     pkg-config
-  ] ++ lib.optional stdenv.isDarwin desktopToDarwinBundle;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   buildInputs = [
     curl
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
   ]
   # See https://groups.google.com/forum/#!topic/nix-devel/h_vSzEJAPXs
   # for why the have additional buildInputs on darwin
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
     unixODBC
     poppler
@@ -74,7 +74,7 @@ stdenv.mkDerivation rec {
   ];
 
   cmakeFlags = [
-    (lib.cmakeBool "OpenMP_SUPPORT" (!stdenv.isDarwin))
+    (lib.cmakeBool "OpenMP_SUPPORT" (!stdenv.hostPlatform.isDarwin))
   ];
 
   meta = with lib; {
diff --git a/pkgs/by-name/sa/salmon/package.nix b/pkgs/by-name/sa/salmon/package.nix
index 09a2fec4c257..bfc12deedd6b 100644
--- a/pkgs/by-name/sa/salmon/package.nix
+++ b/pkgs/by-name/sa/salmon/package.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation (finalAttrs: {
     tbb_2021_11
     xz
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   nativeBuildInputs = [ cmake pkg-config ];
 
diff --git a/pkgs/by-name/sa/sanjuuni/package.nix b/pkgs/by-name/sa/sanjuuni/package.nix
index 231714941462..f8577d3b8a15 100644
--- a/pkgs/by-name/sa/sanjuuni/package.nix
+++ b/pkgs/by-name/sa/sanjuuni/package.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     changelog = "https://github.com/MCJack123/sanjuuni/releases/tag/${version}";
     maintainers = [ maintainers.tomodachi94 ];
     license = licenses.gpl2Plus;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "sanjuuni";
   };
 }
diff --git a/pkgs/by-name/sa/sarif-fmt/package.nix b/pkgs/by-name/sa/sarif-fmt/package.nix
index 37e59c4a332b..6e3a236ed4e9 100644
--- a/pkgs/by-name/sa/sarif-fmt/package.nix
+++ b/pkgs/by-name/sa/sarif-fmt/package.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
   # `test_clippy` (the only test we enable) is broken on Darwin
   # because `--enable-profiler` is not enabled in rustc on Darwin
   # error[E0463]: can't find crate for profiler_builtins
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkFlags = [
     # these tests use nix so...no go
diff --git a/pkgs/by-name/sc/schemamap/package.nix b/pkgs/by-name/sc/schemamap/package.nix
index 95908de6e1c6..081cee9a23f6 100644
--- a/pkgs/by-name/sc/schemamap/package.nix
+++ b/pkgs/by-name/sc/schemamap/package.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk;
       [
         frameworks.Security
diff --git a/pkgs/by-name/sc/scrcpy/package.nix b/pkgs/by-name/sc/scrcpy/package.nix
index 06779e7c761d..0deceb3f8c4a 100644
--- a/pkgs/by-name/sc/scrcpy/package.nix
+++ b/pkgs/by-name/sc/scrcpy/package.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation rec {
 
     # runtime dep on `adb` to push the server
     wrapProgram "$out/bin/scrcpy" --prefix PATH : "${android-tools}/bin"
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace $out/share/applications/scrcpy-console.desktop \
       --replace "/bin/bash" "${runtimeShell}"
   '';
diff --git a/pkgs/by-name/sc/screen-pipe/package.nix b/pkgs/by-name/sc/screen-pipe/package.nix
index b851c49a5808..141eca8d82c7 100644
--- a/pkgs/by-name/sc/screen-pipe/package.nix
+++ b/pkgs/by-name/sc/screen-pipe/package.nix
@@ -49,7 +49,7 @@ rustPlatform.buildRustPackage rec {
       openssl
       sqlite
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk_12_3.frameworks;
       [
         CoreAudio
@@ -65,12 +65,12 @@ rustPlatform.buildRustPackage rec {
         SystemConfiguration
       ]
     )
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       alsa-lib
       xorg.libxcb
     ];
 
-  buildFeatures = lib.optional stdenv.isDarwin "metal";
+  buildFeatures = lib.optional stdenv.hostPlatform.isDarwin "metal";
 
   env = {
     RUSTONIG_SYSTEM_LIBONIG = true;
diff --git a/pkgs/by-name/sc/screenly-cli/package.nix b/pkgs/by-name/sc/screenly-cli/package.nix
index 9cc2cd511ef8..b93266bbdc25 100644
--- a/pkgs/by-name/sc/screenly-cli/package.nix
+++ b/pkgs/by-name/sc/screenly-cli/package.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreFoundation
       darwin.apple_sdk.frameworks.CoreServices
       darwin.apple_sdk.frameworks.Security
diff --git a/pkgs/by-name/sc/scs/package.nix b/pkgs/by-name/sc/scs/package.nix
index 49911355e2db..1ba3eb5912b8 100644
--- a/pkgs/by-name/sc/scs/package.nix
+++ b/pkgs/by-name/sc/scs/package.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
       --replace "gcc" "cc"
   '';
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin fixDarwinDylibNames;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   buildInputs = [
     blas
diff --git a/pkgs/by-name/sd/SDL1/package.nix b/pkgs/by-name/sd/SDL1/package.nix
index 7abff886d509..bd793b5885bb 100644
--- a/pkgs/by-name/sd/SDL1/package.nix
+++ b/pkgs/by-name/sd/SDL1/package.nix
@@ -16,11 +16,11 @@
 , pkg-config
 , stdenv
 # Boolean flags
-, alsaSupport ? stdenv.isLinux && !stdenv.hostPlatform.isAndroid
+, alsaSupport ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid
 , libGLSupported ? lib.meta.availableOn stdenv.hostPlatform libGL
 , openglSupport ? libGLSupported
-, pulseaudioSupport ? config.pulseaudio or stdenv.isLinux && !stdenv.hostPlatform.isAndroid && lib.meta.availableOn stdenv.hostPlatform libpulseaudio
-, x11Support ? !stdenv.isCygwin && !stdenv.hostPlatform.isAndroid
+, pulseaudioSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid && lib.meta.availableOn stdenv.hostPlatform libpulseaudio
+, x11Support ? !stdenv.hostPlatform.isCygwin && !stdenv.hostPlatform.isAndroid
 }:
 
 # NOTE: When editing this expression see if the same change applies to
@@ -30,13 +30,13 @@ let
   inherit (darwin.apple_sdk.frameworks) OpenGL CoreAudio CoreServices AudioUnit Kernel Cocoa GLUT;
   extraPropagatedBuildInputs = [ ]
     ++ lib.optionals x11Support [ libXext libICE libXrandr ]
-    ++ lib.optionals (openglSupport && stdenv.isLinux) [ libGL ]
+    ++ lib.optionals (openglSupport && stdenv.hostPlatform.isLinux) [ libGL ]
     # libGLU doesn’t work with Android's SDL
-    ++ lib.optionals (openglSupport && stdenv.isLinux && (!stdenv.hostPlatform.isAndroid)) [ libGLU ]
-    ++ lib.optionals (openglSupport && stdenv.isDarwin) [ OpenGL GLUT ]
+    ++ lib.optionals (openglSupport && stdenv.hostPlatform.isLinux && (!stdenv.hostPlatform.isAndroid)) [ libGLU ]
+    ++ lib.optionals (openglSupport && stdenv.hostPlatform.isDarwin) [ OpenGL GLUT ]
     ++ lib.optional alsaSupport alsa-lib
     ++ lib.optional pulseaudioSupport libpulseaudio
-    ++ lib.optional stdenv.isDarwin Cocoa;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "SDL";
@@ -51,14 +51,14 @@ stdenv.mkDerivation (finalAttrs: {
   outputBin = "dev"; # sdl-config
 
   nativeBuildInputs = [ pkg-config ]
-    ++ lib.optional stdenv.isLinux libcap;
+    ++ lib.optional stdenv.hostPlatform.isLinux libcap;
 
   propagatedBuildInputs = [ libiconv ] ++ extraPropagatedBuildInputs;
 
   buildInputs =
     [ ]
     ++ lib.optionals (!stdenv.hostPlatform.isMinGW && alsaSupport) [ audiofile ]
-    ++ lib.optionals stdenv.isDarwin [ AudioUnit CoreAudio CoreServices Kernel OpenGL ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AudioUnit CoreAudio CoreServices Kernel OpenGL ];
 
   configureFlags = [
     "--disable-oss"
@@ -70,7 +70,7 @@ stdenv.mkDerivation (finalAttrs: {
   #   SDL_X11_SYM(int,_XData32,(Display *dpy,register long *data,unsigned len),(dpy,data,len),return)
   #
   # Please try revert the change that introduced this comment when updating SDL.
-  ] ++ lib.optional stdenv.isDarwin "--disable-x11-shared"
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "--disable-x11-shared"
     ++ lib.optional (!x11Support) "--without-x"
     ++ lib.optional alsaSupport "--with-alsa-prefix=${alsa-lib.out}/lib"
     ++ lib.optional stdenv.hostPlatform.isMusl "CFLAGS=-DICONV_INBUF_NONCONST";
diff --git a/pkgs/by-name/sd/SDL2_Pango/package.nix b/pkgs/by-name/sd/SDL2_Pango/package.nix
index 9fbee142d6b9..755c0a1af463 100644
--- a/pkgs/by-name/sd/SDL2_Pango/package.nix
+++ b/pkgs/by-name/sd/SDL2_Pango/package.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
     SDL2
     freetype
     pango
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.libobjc
   ];
 
diff --git a/pkgs/by-name/sd/SDL2_gfx/package.nix b/pkgs/by-name/sd/SDL2_gfx/package.nix
index d74d859fefcb..b5a68c23e49b 100644
--- a/pkgs/by-name/sd/SDL2_gfx/package.nix
+++ b/pkgs/by-name/sd/SDL2_gfx/package.nix
@@ -7,7 +7,7 @@
   testers,
   # Boolean flags
   enableMmx ? stdenv.hostPlatform.isx86,
-  enableSdltest ? (!stdenv.isDarwin),
+  enableSdltest ? (!stdenv.hostPlatform.isDarwin),
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -27,7 +27,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     SDL2
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.libobjc
   ];
 
diff --git a/pkgs/by-name/sd/SDL2_image/package.nix b/pkgs/by-name/sd/SDL2_image/package.nix
index 2af81bd18cb7..19028ab115a0 100644
--- a/pkgs/by-name/sd/SDL2_image/package.nix
+++ b/pkgs/by-name/sd/SDL2_image/package.nix
@@ -14,7 +14,7 @@
   zlib,
   # Boolean flags
   ## Darwin headless will hang when trying to run the SDL test program
-  enableSdltest ? (!stdenv.isDarwin),
+  enableSdltest ? (!stdenv.hostPlatform.isDarwin),
 }:
 
 let
@@ -43,7 +43,7 @@ stdenv.mkDerivation (finalAttrs: {
     libtiff
     libwebp
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [ Foundation ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Foundation ];
 
   configureFlags = [
     # Disable dynamically loaded dependencies
@@ -52,9 +52,9 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.enableFeature false "tif-shared")
     (lib.enableFeature false "webp-shared")
     (lib.enableFeature enableSdltest "sdltest")
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # Don't use native macOS frameworks
-    # Caution: do not set this as (!stdenv.isDarwin) since it would be true
+    # Caution: do not set this as (!stdenv.hostPlatform.isDarwin) since it would be true
     # outside Darwin - and ImageIO does not exist outisde Darwin
     (lib.enableFeature false "imageio")
   ];
diff --git a/pkgs/by-name/sd/SDL2_mixer/package.nix b/pkgs/by-name/sd/SDL2_mixer/package.nix
index 976dc2f5fa92..bd2894f5583d 100644
--- a/pkgs/by-name/sd/SDL2_mixer/package.nix
+++ b/pkgs/by-name/sd/SDL2_mixer/package.nix
@@ -15,8 +15,8 @@
   stdenv,
   timidity,
   # Boolean flags
-  enableSdltest ? (!stdenv.isDarwin),
-  enableSmpegtest ? (!stdenv.isDarwin),
+  enableSdltest ? (!stdenv.hostPlatform.isDarwin),
+  enableSmpegtest ? (!stdenv.hostPlatform.isDarwin),
 }:
 
 let
@@ -38,7 +38,7 @@ stdenv.mkDerivation (finalAttrs: {
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     AudioToolbox
     AudioUnit
     CoreServices
diff --git a/pkgs/by-name/sd/SDL2_net/package.nix b/pkgs/by-name/sd/SDL2_net/package.nix
index 0214e2cd5b4b..0325e6aa4c12 100644
--- a/pkgs/by-name/sd/SDL2_net/package.nix
+++ b/pkgs/by-name/sd/SDL2_net/package.nix
@@ -6,7 +6,7 @@
   pkg-config,
   stdenv,
   # Boolean flags
-  enableSdltest ? (!stdenv.isDarwin),
+  enableSdltest ? (!stdenv.hostPlatform.isDarwin),
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -27,7 +27,7 @@ stdenv.mkDerivation (finalAttrs: {
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.libobjc
   ];
 
diff --git a/pkgs/by-name/sd/SDL2_sound/package.nix b/pkgs/by-name/sd/SDL2_sound/package.nix
index d67db20695db..46517c42cb32 100644
--- a/pkgs/by-name/sd/SDL2_sound/package.nix
+++ b/pkgs/by-name/sd/SDL2_sound/package.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = [ "-DSDLSOUND_DECODER_MIDI=1" ];
 
   buildInputs = [ SDL2 flac libmikmod libvorbis timidity ]
-    ++ lib.optionals stdenv.isDarwin [ AudioToolbox CoreAudio ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AudioToolbox CoreAudio ];
 
   meta = with lib; {
     description = "SDL2 sound library";
diff --git a/pkgs/by-name/sd/SDL2_ttf/package.nix b/pkgs/by-name/sd/SDL2_ttf/package.nix
index 140c104bcb44..dcc5fee21f33 100644
--- a/pkgs/by-name/sd/SDL2_ttf/package.nix
+++ b/pkgs/by-name/sd/SDL2_ttf/package.nix
@@ -10,7 +10,7 @@
   stdenv,
   testers,
   # Boolean flags
-  enableSdltest ? (!stdenv.isDarwin),
+  enableSdltest ? (!stdenv.hostPlatform.isDarwin),
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -32,10 +32,10 @@ stdenv.mkDerivation (finalAttrs: {
     freetype
     harfbuzz
   ]
-  ++ lib.optionals (!stdenv.isDarwin) [
+  ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libGL
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.libobjc
   ];
 
diff --git a/pkgs/by-name/sd/SDL_Pango/package.nix b/pkgs/by-name/sd/SDL_Pango/package.nix
index 8c4160d98684..78e5d40d0a90 100644
--- a/pkgs/by-name/sd/SDL_Pango/package.nix
+++ b/pkgs/by-name/sd/SDL_Pango/package.nix
@@ -8,7 +8,7 @@
   pkg-config,
   stdenv,
   # Boolean flags
-  enableSdltest ? (!stdenv.isDarwin),
+  enableSdltest ? (!stdenv.hostPlatform.isDarwin),
 }:
 
 stdenv.mkDerivation (finalAttrs: {
diff --git a/pkgs/by-name/sd/SDL_compat/package.nix b/pkgs/by-name/sd/SDL_compat/package.nix
index a2ac5f6d2887..ac7d8ff68b81 100644
--- a/pkgs/by-name/sd/SDL_compat/package.nix
+++ b/pkgs/by-name/sd/SDL_compat/package.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   nativeBuildInputs = [ cmake pkg-config ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ autoSignDarwinBinariesHook ];
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ autoSignDarwinBinariesHook ];
 
   propagatedBuildInputs = [ SDL2 ]
     ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Cocoa ]
diff --git a/pkgs/by-name/sd/SDL_gfx/package.nix b/pkgs/by-name/sd/SDL_gfx/package.nix
index 558e1943a14b..5677d62b7b93 100644
--- a/pkgs/by-name/sd/SDL_gfx/package.nix
+++ b/pkgs/by-name/sd/SDL_gfx/package.nix
@@ -4,7 +4,7 @@
   fetchurl,
   stdenv,
   # Boolean flags
-  enableSdltest ? (!stdenv.isDarwin),
+  enableSdltest ? (!stdenv.hostPlatform.isDarwin),
 }:
 
 stdenv.mkDerivation (finalAttrs: {
diff --git a/pkgs/by-name/sd/SDL_image/package.nix b/pkgs/by-name/sd/SDL_image/package.nix
index ce6824b09d0b..fdd0b5f373ac 100644
--- a/pkgs/by-name/sd/SDL_image/package.nix
+++ b/pkgs/by-name/sd/SDL_image/package.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.enableFeature false "png-shared")
     (lib.enableFeature false "tif-shared")
     (lib.enableFeature false "webp-shared")
-    (lib.enableFeature (!stdenv.isDarwin) "sdltest")
+    (lib.enableFeature (!stdenv.hostPlatform.isDarwin) "sdltest")
   ];
 
   nativeBuildInputs = [
diff --git a/pkgs/by-name/sd/SDL_mixer/package.nix b/pkgs/by-name/sd/SDL_mixer/package.nix
index 470bd5559d7c..84af162a7384 100644
--- a/pkgs/by-name/sd/SDL_mixer/package.nix
+++ b/pkgs/by-name/sd/SDL_mixer/package.nix
@@ -12,8 +12,8 @@
   stdenv,
   # Boolean flags
   enableNativeMidi ? false,
-  enableSdltest ? (!stdenv.isDarwin),
-  enableSmpegtest ? (!stdenv.isDarwin),
+  enableSdltest ? (!stdenv.hostPlatform.isDarwin),
+  enableSmpegtest ? (!stdenv.hostPlatform.isDarwin),
 }:
 
 stdenv.mkDerivation (finalAttrs: {
diff --git a/pkgs/by-name/sd/SDL_net/package.nix b/pkgs/by-name/sd/SDL_net/package.nix
index 4d45ff624e8f..369f956fdf94 100644
--- a/pkgs/by-name/sd/SDL_net/package.nix
+++ b/pkgs/by-name/sd/SDL_net/package.nix
@@ -5,7 +5,7 @@
   pkg-config,
   stdenv,
   # Boolean flags
-  enableSdltest ? (!stdenv.isDarwin)
+  enableSdltest ? (!stdenv.hostPlatform.isDarwin)
 }:
 
 stdenv.mkDerivation (finalAttrs: {
diff --git a/pkgs/by-name/sd/SDL_sound/package.nix b/pkgs/by-name/sd/SDL_sound/package.nix
index b5e93b3efdf2..e2fd8000c546 100644
--- a/pkgs/by-name/sd/SDL_sound/package.nix
+++ b/pkgs/by-name/sd/SDL_sound/package.nix
@@ -7,7 +7,7 @@
   libvorbis,
   stdenv,
   # Boolean flags
-  enableSdltest ? (!stdenv.isDarwin)
+  enableSdltest ? (!stdenv.hostPlatform.isDarwin)
 }:
 
 stdenv.mkDerivation (finalAttrs: {
diff --git a/pkgs/by-name/sd/SDL_ttf/package.nix b/pkgs/by-name/sd/SDL_ttf/package.nix
index a44aeaa7f05b..bd40d331b9b9 100644
--- a/pkgs/by-name/sd/SDL_ttf/package.nix
+++ b/pkgs/by-name/sd/SDL_ttf/package.nix
@@ -6,7 +6,7 @@
   freetype,
   stdenv,
   # Boolean flags
-  enableSdltest ? (!stdenv.isDarwin),
+  enableSdltest ? (!stdenv.hostPlatform.isDarwin),
 }:
 
 stdenv.mkDerivation (finalAttrs: {
diff --git a/pkgs/by-name/se/selenium-manager/package.nix b/pkgs/by-name/se/selenium-manager/package.nix
index 47b6e2c16c16..4877804ef897 100644
--- a/pkgs/by-name/se/selenium-manager/package.nix
+++ b/pkgs/by-name/se/selenium-manager/package.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-1CPUOAfBfUeZt5S8t5SM3oyrNwXKHplhHG5idVy4YrE=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/by-name/se/sendme/package.nix b/pkgs/by-name/se/sendme/package.nix
index e355dd99f317..ea5d670af8a2 100644
--- a/pkgs/by-name/se/sendme/package.nix
+++ b/pkgs/by-name/se/sendme/package.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-U2/GUpWtpTX+RCBojh3N6DsWB0gjFkH1mGA+AS+fH+o=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks; [
       SystemConfiguration
     ]
diff --git a/pkgs/by-name/se/sequoia-sq/package.nix b/pkgs/by-name/se/sequoia-sq/package.nix
index 4183e235286f..5de7ab47962c 100644
--- a/pkgs/by-name/se/sequoia-sq/package.nix
+++ b/pkgs/by-name/se/sequoia-sq/package.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
     openssl
     sqlite
     nettle
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
 
   checkFlags = [
     # https://gitlab.com/sequoia-pgp/sequoia-sq/-/issues/297
diff --git a/pkgs/by-name/se/sequoia-wot/package.nix b/pkgs/by-name/se/sequoia-wot/package.nix
index d95066972cb8..09ae4d8bd9f2 100644
--- a/pkgs/by-name/se/sequoia-wot/package.nix
+++ b/pkgs/by-name/se/sequoia-wot/package.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
     # See comment near sequoia-openpgp/crypto- buildFeatures
   ] ++ lib.optionals (!stdenv.targetPlatform.isWindows) [
diff --git a/pkgs/by-name/se/serie/package.nix b/pkgs/by-name/se/serie/package.nix
index 516756d12c77..e59723c24ec7 100644
--- a/pkgs/by-name/se/serie/package.nix
+++ b/pkgs/by-name/se/serie/package.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-HxIyWlFKDRod5nSENZguNYz/vn+E9Ux0K3dMhX7I/zQ=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks;
     [
       CoreGraphics
diff --git a/pkgs/by-name/se/servo/package.nix b/pkgs/by-name/se/servo/package.nix
index de7efca2767f..fc586d5ddcd9 100644
--- a/pkgs/by-name/se/servo/package.nix
+++ b/pkgs/by-name/se/servo/package.nix
@@ -130,7 +130,7 @@ rustPlatform.buildRustPackage {
     libGL
     xorg.libX11
     xorg.libxcb
-  ] ++ (lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.AppKit ]);
+  ] ++ (lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.AppKit ]);
 
   # copy resources into `$out` to be used during runtime
   # link runtime libraries
diff --git a/pkgs/by-name/sg/sgfutils/package.nix b/pkgs/by-name/sg/sgfutils/package.nix
index f82bc4e59a6a..586a3ab1e096 100644
--- a/pkgs/by-name/sg/sgfutils/package.nix
+++ b/pkgs/by-name/sg/sgfutils/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation
     hash = "sha256-KWYgTxz32WK3MKouj1WAJtZmleKt5giCpzQPwfWruZQ=";
   };
   nativeBuildInputs = [ makeWrapper ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
   buildPhase = ''
     runHook preBuild
     make all
diff --git a/pkgs/by-name/sh/share-preview/package.nix b/pkgs/by-name/sh/share-preview/package.nix
index 093bbaf33270..4f3cda10bd76 100644
--- a/pkgs/by-name/sh/share-preview/package.nix
+++ b/pkgs/by-name/sh/share-preview/package.nix
@@ -46,13 +46,13 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     libadwaita
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
   env.NIX_CFLAGS_COMPILE = toString (
-    lib.optionals stdenv.isDarwin [ "-Wno-error=incompatible-function-pointer-types" ]
+    lib.optionals stdenv.hostPlatform.isDarwin [ "-Wno-error=incompatible-function-pointer-types" ]
   );
 
   meta = {
diff --git a/pkgs/by-name/si/signal-backup-deduplicator/package.nix b/pkgs/by-name/si/signal-backup-deduplicator/package.nix
index d5efff9e3f4d..5c098d7d46df 100644
--- a/pkgs/by-name/si/signal-backup-deduplicator/package.nix
+++ b/pkgs/by-name/si/signal-backup-deduplicator/package.nix
@@ -33,6 +33,6 @@ stdenv.mkDerivation {
     mainProgram = "signal_backup_deduplicate";
     platforms = lib.platforms.all;
     # ld: symbol(s) not found for architecture ...
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/si/silicon/package.nix b/pkgs/by-name/si/silicon/package.nix
index cba16e706b8c..0c77d93b5a00 100644
--- a/pkgs/by-name/si/silicon/package.nix
+++ b/pkgs/by-name/si/silicon/package.nix
@@ -40,8 +40,8 @@ rustPlatform.buildRustPackage rec {
   '';
 
   buildInputs = [ expat freetype fira-code fontconfig harfbuzz ]
-    ++ lib.optionals stdenv.isLinux [ libxcb ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libxcb ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
       libiconv
       AppKit
       CoreText
@@ -49,7 +49,7 @@ rustPlatform.buildRustPackage rec {
     ]);
 
   nativeBuildInputs = [ cmake pkg-config rustPlatform.bindgenHook ]
-    ++ lib.optionals stdenv.isLinux [ python3 ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ python3 ];
 
   preCheck = ''
     export HOME=$TMPDIR
diff --git a/pkgs/by-name/si/single-file-cli/package.nix b/pkgs/by-name/si/single-file-cli/package.nix
index d6aa4d28a7d8..0af72089592a 100644
--- a/pkgs/by-name/si/single-file-cli/package.nix
+++ b/pkgs/by-name/si/single-file-cli/package.nix
@@ -19,7 +19,7 @@ buildNpmPackage {
   npmDepsHash = "sha256-wiBpWw9nb/pWVGIc4Vl/IxxR5ic0LzLMMr3WxRNvYdM=";
 
   nativeCheckInputs = [chromium];
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
 
   postBuild = ''
     patchShebangs ./single-file
diff --git a/pkgs/by-name/si/sirius/package.nix b/pkgs/by-name/si/sirius/package.nix
index 34ee961d1404..d437eece8b21 100644
--- a/pkgs/by-name/si/sirius/package.nix
+++ b/pkgs/by-name/si/sirius/package.nix
@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optionals (gpuBackend == "rocm") [
     rocmPackages.clr
     rocmPackages.rocblas
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     llvmPackages.openmp
   ] ++ lib.optionals enablePython (with pythonPackages; [
     python
diff --git a/pkgs/by-name/sk/sketchybar/package.nix b/pkgs/by-name/sk/sketchybar/package.nix
index 0b1b4e21acd1..e0e2a004e6d7 100644
--- a/pkgs/by-name/sk/sketchybar/package.nix
+++ b/pkgs/by-name/sk/sketchybar/package.nix
@@ -29,7 +29,7 @@ let
     }
     .${system} or (throw "Unsupported system: ${system}");
 
-  stdenv' = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
 in
 stdenv'.mkDerivation (finalAttrs: {
   pname = "sketchybar";
diff --git a/pkgs/by-name/sk/skhd/package.nix b/pkgs/by-name/sk/skhd/package.nix
index d3b3b9adb96a..1876a43916a7 100644
--- a/pkgs/by-name/sk/skhd/package.nix
+++ b/pkgs/by-name/sk/skhd/package.nix
@@ -10,7 +10,7 @@
 let
   inherit (darwin.apple_sdk_11_0.frameworks) Carbon Cocoa;
 
-  stdenv' = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
 in
 stdenv'.mkDerivation (finalAttrs: {
   pname = "skhd";
diff --git a/pkgs/by-name/sk/skia/package.nix b/pkgs/by-name/sk/skia/package.nix
index a6972b628bd8..2790b77101d5 100644
--- a/pkgs/by-name/sk/skia/package.nix
+++ b/pkgs/by-name/sk/skia/package.nix
@@ -18,7 +18,7 @@
 , vulkan-memory-allocator
 , xcbuild
 
-, enableVulkan ? !stdenv.isDarwin
+, enableVulkan ? !stdenv.hostPlatform.isDarwin
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -46,7 +46,7 @@ stdenv.mkDerivation (finalAttrs: {
     gn
     ninja
     python3
-  ] ++ lib.optional stdenv.isDarwin xcbuild;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin xcbuild;
 
   buildInputs = [
     expat
@@ -145,6 +145,6 @@ stdenv.mkDerivation (finalAttrs: {
     platforms = with lib.platforms; arm ++ aarch64 ++ x86 ++ x86_64;
     pkgConfigModules = [ "skia" ];
     # https://github.com/NixOS/nixpkgs/pull/325871#issuecomment-2220610016
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/sk/skribilo/package.nix b/pkgs/by-name/sk/skribilo/package.nix
index 9602ff7d167e..63083457bee5 100644
--- a/pkgs/by-name/sk/skribilo/package.nix
+++ b/pkgs/by-name/sk/skribilo/package.nix
@@ -11,8 +11,8 @@
 , makeWrapper
 , pkg-config
 , enableEmacs ? false, emacs
-, enableLout ? stdenv.isLinux, lout
-, enablePloticus ? stdenv.isLinux, ploticus
+, enableLout ? stdenv.hostPlatform.isLinux, lout
+, enablePloticus ? stdenv.hostPlatform.isLinux, ploticus
 , enableTex ? true, texliveSmall
 }:
 
diff --git a/pkgs/by-name/sl/slang/package.nix b/pkgs/by-name/sl/slang/package.nix
index 162bc8395d99..7d67d22eb3e0 100644
--- a/pkgs/by-name/sl/slang/package.nix
+++ b/pkgs/by-name/sl/slang/package.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     pcre
     readline
     zlib
-  ] ++ lib.optionals (stdenv.isDarwin) [ libiconv ];
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ libiconv ];
 
   propagatedBuildInputs = [ ncurses ];
 
diff --git a/pkgs/by-name/sl/slimserver/package.nix b/pkgs/by-name/sl/slimserver/package.nix
index b88f72b0d118..abdb045e7ced 100644
--- a/pkgs/by-name/sl/slimserver/package.nix
+++ b/pkgs/by-name/sl/slimserver/package.nix
@@ -24,7 +24,7 @@ let
       sox
       wavpack
     ]
-    ++ (lib.optional stdenv.isLinux monkeysAudio)
+    ++ (lib.optional stdenv.hostPlatform.isLinux monkeysAudio)
   );
   libPath = lib.makeLibraryPath [
     zlib
@@ -117,8 +117,8 @@ perlPackages.buildPerlPackage rec {
       XMLSimple
       YAMLLibYAML
     ]
-    # ++ (lib.optional stdenv.isDarwin perlPackages.MacFSEvents)
-    ++ (lib.optional stdenv.isLinux perlPackages.LinuxInotify2);
+    # ++ (lib.optional stdenv.hostPlatform.isDarwin perlPackages.MacFSEvents)
+    ++ (lib.optional stdenv.hostPlatform.isLinux perlPackages.LinuxInotify2);
 
   prePatch = ''
     # remove vendored binaries
@@ -179,6 +179,6 @@ perlPackages.buildPerlPackage rec {
       jecaro
     ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/sl/slumber/package.nix b/pkgs/by-name/sl/slumber/package.nix
index b65e041cdc24..aed0f3848c42 100644
--- a/pkgs/by-name/sl/slumber/package.nix
+++ b/pkgs/by-name/sl/slumber/package.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-jLBid9MDQ2eMhG0knxU1gxbi+eRFlCPYRkzWnjCnyG0=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.AppKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.AppKit ];
 
   meta = with lib; {
     description = "Terminal-based HTTP/REST client";
diff --git a/pkgs/by-name/sm/smartcat/package.nix b/pkgs/by-name/sm/smartcat/package.nix
index bc81bfd0a2db..fb7195bfeaee 100644
--- a/pkgs/by-name/sm/smartcat/package.nix
+++ b/pkgs/by-name/sm/smartcat/package.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
     openssl
     libX11
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/sm/smuview/package.nix b/pkgs/by-name/sm/smuview/package.nix
index 907e332279ca..a030d649992d 100644
--- a/pkgs/by-name/sm/smuview/package.nix
+++ b/pkgs/by-name/sm/smuview/package.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake pkg-config qt5.wrapQtAppsHook ]
-    ++ lib.optional stdenv.isDarwin desktopToDarwinBundle;
+    ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   buildInputs = [
     glib
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     python3
     pcre
     libsForQt5.qwt
-  ] ++ lib.optionals stdenv.isLinux [ bluez ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ bluez ];
 
   meta = with lib; {
     description = "Qt based source measure unit GUI for sigrok";
diff --git a/pkgs/by-name/sm/smuxi/package.nix b/pkgs/by-name/sm/smuxi/package.nix
index 40ae39deee0f..72354275e398 100644
--- a/pkgs/by-name/sm/smuxi/package.nix
+++ b/pkgs/by-name/sm/smuxi/package.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   pname = "smuxi";
   version = "unstable-2023-07-01";
 
-  runtimeLoaderEnvVariableName = if stdenv.isDarwin then
+  runtimeLoaderEnvVariableName = if stdenv.hostPlatform.isDarwin then
                                    "DYLD_FALLBACK_LIBRARY_PATH"
                                  else
                                    "LD_LIBRARY_PATH";
@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
     cp -a lib/Nini.dll $out/lib/smuxi/
 
     # install GTK+ icon theme on Darwin
-    ${if guiSupport && stdenv.isDarwin then "
+    ${if guiSupport && stdenv.hostPlatform.isDarwin then "
       mkdir -p $out/lib/smuxi/icons/
       cp -a images/Smuxi-Symbolic $out/lib/smuxi/icons/
     " else ""}
diff --git a/pkgs/by-name/sn/sn0int/package.nix b/pkgs/by-name/sn/sn0int/package.nix
index 974f6a298d1e..6e9afcd4a149 100644
--- a/pkgs/by-name/sn/sn0int/package.nix
+++ b/pkgs/by-name/sn/sn0int/package.nix
@@ -31,9 +31,9 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     libsodium
     sqlite
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libseccomp
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     pkgs.darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/sn/snapcraft/package.nix b/pkgs/by-name/sn/snapcraft/package.nix
index 9c6add8c197b..ad2eb1c0b7fc 100644
--- a/pkgs/by-name/sn/snapcraft/package.nix
+++ b/pkgs/by-name/sn/snapcraft/package.nix
@@ -196,7 +196,7 @@ python.pkgs.buildPythonApplication rec {
     "test_snap_command_fallback"
     "test_validate_architectures_supported"
     "test_validate_architectures_unsupported"
-  ] ++ lib.optionals stdenv.isAarch64 [ "test_load_project" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isAarch64 [ "test_load_project" ];
 
   disabledTestPaths = [
     "tests/unit/commands/test_remote.py"
diff --git a/pkgs/by-name/sn/snes9x/package.nix b/pkgs/by-name/sn/snes9x/package.nix
index 1888a2df4186..31aa73db6a92 100644
--- a/pkgs/by-name/sn/snes9x/package.nix
+++ b/pkgs/by-name/sn/snes9x/package.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation (finalAttrs: {
     minizip
     zlib
   ]
-  ++ lib.optionals stdenv.isLinux [
+  ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     pulseaudio
     libselinux
@@ -137,6 +137,6 @@ stdenv.mkDerivation (finalAttrs: {
         sugar700
       ];
       platforms = lib.platforms.unix;
-      broken = (withGtk && stdenv.isDarwin);
+      broken = (withGtk && stdenv.hostPlatform.isDarwin);
     };
 })
diff --git a/pkgs/by-name/sn/sniffglue/package.nix b/pkgs/by-name/sn/sniffglue/package.nix
index 9cedce67f64e..5bafa510776f 100644
--- a/pkgs/by-name/sn/sniffglue/package.nix
+++ b/pkgs/by-name/sn/sniffglue/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     libpcap
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libseccomp
   ];
 
diff --git a/pkgs/by-name/sn/snyk/package.nix b/pkgs/by-name/sn/snyk/package.nix
index b974fd0ee5f7..4c90ad105a6f 100644
--- a/pkgs/by-name/sn/snyk/package.nix
+++ b/pkgs/by-name/sn/snyk/package.nix
@@ -31,7 +31,7 @@ buildNpmPackage {
   env.NIX_CFLAGS_COMPILE =
     # Fix error: no member named 'aligned_alloc' in the global namespace
     lib.optionalString (
-      stdenv.isDarwin && stdenv.isx86_64
+      stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64
     ) "-D_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION=1";
 
   npmBuildScript = "build:prod";
diff --git a/pkgs/by-name/so/so/package.nix b/pkgs/by-name/so/so/package.nix
index 9c837f4ae269..12c978a9b3aa 100644
--- a/pkgs/by-name/so/so/package.nix
+++ b/pkgs/by-name/so/so/package.nix
@@ -31,7 +31,7 @@ let
 
     buildInputs =
       [ openssl ]
-      ++ lib.optionals stdenv.isDarwin [
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [
         libiconv
         CoreServices
         Security
diff --git a/pkgs/by-name/so/solana-cli/package.nix b/pkgs/by-name/so/solana-cli/package.nix
index e82849b9685f..614be9acbc5f 100644
--- a/pkgs/by-name/so/solana-cli/package.nix
+++ b/pkgs/by-name/so/solana-cli/package.nix
@@ -70,8 +70,8 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles protobuf pkg-config ];
   buildInputs = [ openssl rustPlatform.bindgenHook ]
-    ++ lib.optionals stdenv.isLinux [ udev ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ udev ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libcxx
     IOKit
     Security
@@ -96,8 +96,8 @@ rustPlatform.buildRustPackage rec {
 
   # Require this on darwin otherwise the compiler starts rambling about missing
   # cmath functions
-  CPPFLAGS = lib.optionals stdenv.isDarwin "-isystem ${lib.getDev libcxx}/include/c++/v1";
-  LDFLAGS = lib.optionals stdenv.isDarwin "-L${lib.getLib libcxx}/lib";
+  CPPFLAGS = lib.optionals stdenv.hostPlatform.isDarwin "-isystem ${lib.getDev libcxx}/include/c++/v1";
+  LDFLAGS = lib.optionals stdenv.hostPlatform.isDarwin "-L${lib.getLib libcxx}/lib";
 
   # If set, always finds OpenSSL in the system, even if the vendored feature is enabled.
   OPENSSL_NO_VENDOR = 1;
diff --git a/pkgs/by-name/so/sonic-server/package.nix b/pkgs/by-name/so/sonic-server/package.nix
index 62857f464dfc..bc10180a540c 100644
--- a/pkgs/by-name/so/sonic-server/package.nix
+++ b/pkgs/by-name/so/sonic-server/package.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
     rustPlatform.bindgenHook
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-faligned-allocation";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-faligned-allocation";
 
   postPatch = ''
     substituteInPlace src/main.rs \
diff --git a/pkgs/by-name/so/sound-of-sorting/package.nix b/pkgs/by-name/so/sound-of-sorting/package.nix
index c6cb6e6a1cf9..b7b14312e358 100644
--- a/pkgs/by-name/so/sound-of-sorting/package.nix
+++ b/pkgs/by-name/so/sound-of-sorting/package.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation (finalAttrs: {
     wxGTK32
     SDL2
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
   ];
 
diff --git a/pkgs/by-name/so/soupault/package.nix b/pkgs/by-name/so/soupault/package.nix
index 615fd3dc7b9e..9912146eb165 100644
--- a/pkgs/by-name/so/soupault/package.nix
+++ b/pkgs/by-name/so/soupault/package.nix
@@ -21,7 +21,7 @@ ocamlPackages.buildDunePackage rec {
     hash = "sha256-UABbrNNcNaN9NgtAjCs4HUoNXMaK4QvCuWERuEnMG6I=";
   };
 
-  nativeBuildInputs = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ darwin.sigtool ];
+  nativeBuildInputs = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ darwin.sigtool ];
 
   buildInputs = with ocamlPackages; [
     base64
diff --git a/pkgs/by-name/so/sourcery/package.nix b/pkgs/by-name/so/sourcery/package.nix
index 79f469347a89..62cf70fde673 100644
--- a/pkgs/by-name/so/sourcery/package.nix
+++ b/pkgs/by-name/so/sourcery/package.nix
@@ -30,7 +30,7 @@ python3Packages.buildPythonApplication rec {
     inherit (platformInfo) platform hash;
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   buildInputs = [ zlib ];
 
diff --git a/pkgs/by-name/sp/spacedrive/package.nix b/pkgs/by-name/sp/spacedrive/package.nix
index cf3ca6f0639a..89fa1d158208 100644
--- a/pkgs/by-name/sp/spacedrive/package.nix
+++ b/pkgs/by-name/sp/spacedrive/package.nix
@@ -59,7 +59,7 @@ let
 
   passthru.updateScript = nix-update-script { };
 in
-if stdenv.isDarwin then
+if stdenv.hostPlatform.isDarwin then
   stdenv.mkDerivation {
     inherit
       pname
diff --git a/pkgs/by-name/sp/spade/package.nix b/pkgs/by-name/sp/spade/package.nix
index e154d7ccfd4e..6612f355a1fd 100644
--- a/pkgs/by-name/sp/spade/package.nix
+++ b/pkgs/by-name/sp/spade/package.nix
@@ -41,8 +41,8 @@ rustPlatform.buildRustPackage rec {
     '')
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ python312 ];
-  env.NIX_CFLAGS_LINK = lib.optionals stdenv.isDarwin "-L${python312}/lib/python3.12/config-3.12-darwin -lpython3.12";
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ python312 ];
+  env.NIX_CFLAGS_LINK = lib.optionals stdenv.hostPlatform.isDarwin "-L${python312}/lib/python3.12/config-3.12-darwin -lpython3.12";
 
   meta = with lib; {
     description = "Better hardware description language";
diff --git a/pkgs/by-name/sp/spades/package.nix b/pkgs/by-name/sp/spades/package.nix
index daa748087b3c..2270ba33909d 100644
--- a/pkgs/by-name/sp/spades/package.nix
+++ b/pkgs/by-name/sp/spades/package.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation (finalAttrs: {
     readline
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-faligned-allocation";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-faligned-allocation";
 
   doCheck = true;
 
diff --git a/pkgs/by-name/sp/spfft/package.nix b/pkgs/by-name/sp/spfft/package.nix
index 65e98b92b4f2..9423978ed24e 100644
--- a/pkgs/by-name/sp/spfft/package.nix
+++ b/pkgs/by-name/sp/spfft/package.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
     rocmPackages.clr
     rocmPackages.rocfft
     rocmPackages.hipfft
-  ] ++ lib.optional stdenv.isDarwin llvmPackages.openmp
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp
   ;
 
   cmakeFlags = [
diff --git a/pkgs/by-name/sp/spla/package.nix b/pkgs/by-name/sp/spla/package.nix
index eccf87258ace..2e07da1cdb02 100644
--- a/pkgs/by-name/sp/spla/package.nix
+++ b/pkgs/by-name/sp/spla/package.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
   ++ lib.optionals (gpuBackend == "rocm") [
     rocmPackages.clr
     rocmPackages.rocblas
-  ] ++ lib.optional stdenv.isDarwin llvmPackages.openmp
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp
   ;
 
   cmakeFlags = [
diff --git a/pkgs/by-name/sp/spotifyd/package.nix b/pkgs/by-name/sp/spotifyd/package.nix
index 2a9bd5394eb0..45cce2754754 100644
--- a/pkgs/by-name/sp/spotifyd/package.nix
+++ b/pkgs/by-name/sp/spotifyd/package.nix
@@ -6,15 +6,15 @@
   rustPackages,
   pkg-config,
   openssl,
-  withALSA ? stdenv.isLinux,
+  withALSA ? stdenv.hostPlatform.isLinux,
   alsa-lib,
-  withJack ? stdenv.isLinux,
+  withJack ? stdenv.hostPlatform.isLinux,
   libjack2,
-  withPulseAudio ? config.pulseaudio or stdenv.isLinux,
+  withPulseAudio ? config.pulseaudio or stdenv.hostPlatform.isLinux,
   libpulseaudio,
-  withPortAudio ? stdenv.isDarwin,
+  withPortAudio ? stdenv.hostPlatform.isDarwin,
   portaudio,
-  withMpris ? stdenv.isLinux,
+  withMpris ? stdenv.hostPlatform.isLinux,
   withKeyring ? true,
   dbus,
   nix-update-script,
@@ -38,14 +38,14 @@ rustPackages.rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs =
-    lib.optionals stdenv.isLinux [ openssl ]
+    lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
     ++ lib.optional (withALSA || withJack) alsa-lib
     ++ lib.optional withJack libjack2
     ++ lib.optional withPulseAudio libpulseaudio
     ++ lib.optional withPortAudio portaudio
     # The `dbus_keying` feature works on other platforms, but only requires
     # `dbus` on Linux
-    ++ lib.optional ((withMpris || withKeyring) && stdenv.isLinux) dbus;
+    ++ lib.optional ((withMpris || withKeyring) && stdenv.hostPlatform.isLinux) dbus;
 
   buildNoDefaultFeatures = true;
   buildFeatures =
diff --git a/pkgs/by-name/sp/spotube/package.nix b/pkgs/by-name/sp/spotube/package.nix
index 38be57a23ebe..89b6a84b5174 100644
--- a/pkgs/by-name/sp/spotube/package.nix
+++ b/pkgs/by-name/sp/spotube/package.nix
@@ -122,4 +122,4 @@ let
     '';
   };
 in
-if stdenv.isDarwin then darwin else linux
+if stdenv.hostPlatform.isDarwin then darwin else linux
diff --git a/pkgs/by-name/sp/spral/package.nix b/pkgs/by-name/sp/spral/package.nix
index 720f0137338b..19fc5c5a5ff0 100644
--- a/pkgs/by-name/sp/spral/package.nix
+++ b/pkgs/by-name/sp/spral/package.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
         "subdir('ssids')" \
         ""
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # Skipped test: lsmrt, segfault
       substituteInPlace tests/meson.build --replace-fail \
         "['lsmrt', files('lsmr.f90')]," \
@@ -47,11 +47,11 @@ stdenv.mkDerivation rec {
     blas
     lapack
     metis
-  ] ++ lib.optionals stdenv.isDarwin [ llvmPackages.openmp ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ llvmPackages.openmp ];
 
   mesonFlags = [ (lib.mesonBool "tests" true) ];
 
-  LDFLAGS = lib.optionals stdenv.isDarwin [ "-lomp" ];
+  LDFLAGS = lib.optionals stdenv.hostPlatform.isDarwin [ "-lomp" ];
 
   doCheck = true;
 
diff --git a/pkgs/by-name/sq/sqlite-vss/package.nix b/pkgs/by-name/sq/sqlite-vss/package.nix
index 5f25699c9920..bc3612ceebe0 100644
--- a/pkgs/by-name/sq/sqlite-vss/package.nix
+++ b/pkgs/by-name/sq/sqlite-vss/package.nix
@@ -25,8 +25,8 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ cmake ];
 
   buildInputs = [ nlohmann_json faiss sqlite ]
-    ++ lib.optional stdenv.isLinux gomp
-    ++ lib.optional stdenv.isDarwin llvmPackages.openmp;
+    ++ lib.optional stdenv.hostPlatform.isLinux gomp
+    ++ lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp;
 
   SQLITE_VSS_CMAKE_VERSION = finalAttrs.version;
 
diff --git a/pkgs/by-name/sq/squeezelite/package.nix b/pkgs/by-name/sq/squeezelite/package.nix
index 41d5f8c9d343..5a07d3da948d 100644
--- a/pkgs/by-name/sq/squeezelite/package.nix
+++ b/pkgs/by-name/sq/squeezelite/package.nix
@@ -9,8 +9,8 @@
   libpulseaudio,
   libvorbis,
   mpg123,
-  audioBackend ? if stdenv.isLinux then "alsa" else "portaudio",
-  alsaSupport ? stdenv.isLinux,
+  audioBackend ? if stdenv.hostPlatform.isLinux then "alsa" else "portaudio",
+  alsaSupport ? stdenv.hostPlatform.isLinux,
   alsa-lib,
   dsdSupport ? true,
   faad2Support ? true,
@@ -23,7 +23,7 @@
   soxr,
   sslSupport ? true,
   openssl,
-  portaudioSupport ? stdenv.isDarwin,
+  portaudioSupport ? stdenv.hostPlatform.isDarwin,
   portaudio,
   slimserver,
 }:
@@ -59,7 +59,7 @@ stdenv.mkDerivation {
     ++ optional pulseSupport libpulseaudio
     ++ optional alsaSupport alsa-lib
     ++ optional portaudioSupport portaudio
-    ++ optionals stdenv.isDarwin (
+    ++ optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk_11_0.frameworks;
       [
         CoreVideo
@@ -75,7 +75,7 @@ stdenv.mkDerivation {
     ++ optional opusSupport opusfile
     ++ optional resampleSupport soxr
     ++ optional sslSupport openssl
-    ++ optional (stdenv.isAarch32 or stdenv.isAarch64) libgpiod;
+    ++ optional (stdenv.hostPlatform.isAarch32 or stdenv.hostPlatform.isAarch64) libgpiod;
 
   enableParallelBuilding = true;
 
@@ -99,9 +99,9 @@ stdenv.mkDerivation {
     ++ optional pulseSupport "-DPULSEAUDIO"
     ++ optional resampleSupport "-DRESAMPLE"
     ++ optional sslSupport "-DUSE_SSL"
-    ++ optional (stdenv.isAarch32 or stdenv.isAarch64) "-DRPI";
+    ++ optional (stdenv.hostPlatform.isAarch32 or stdenv.hostPlatform.isAarch64) "-DRPI";
 
-  env = lib.optionalAttrs stdenv.isDarwin { LDADD = "-lportaudio -lpthread"; };
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin { LDADD = "-lportaudio -lpthread"; };
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/by-name/ss/ssh-askpass-fullscreen/package.nix b/pkgs/by-name/ss/ssh-askpass-fullscreen/package.nix
index e677562fe3ed..0b192024f239 100644
--- a/pkgs/by-name/ss/ssh-askpass-fullscreen/package.nix
+++ b/pkgs/by-name/ss/ssh-askpass-fullscreen/package.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   meta = {
     homepage = "https://github.com/atj/ssh-askpass-fullscreen";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Small, fullscreen SSH askpass GUI using GTK+2";
     license = with lib.licenses; [ gpl2Plus ];
     mainProgram = "ssh-askpass-fullscreen";
diff --git a/pkgs/by-name/ss/ssh-openpgp-auth/generic.nix b/pkgs/by-name/ss/ssh-openpgp-auth/generic.nix
index 47edd91a4f3c..4cfe2b6ec7c4 100644
--- a/pkgs/by-name/ss/ssh-openpgp-auth/generic.nix
+++ b/pkgs/by-name/ss/ssh-openpgp-auth/generic.nix
@@ -59,7 +59,7 @@ rustPlatform.buildRustPackage {
     nettle
     openssl
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.CoreFoundation
     darwin.apple_sdk_11_0.frameworks.IOKit
     darwin.apple_sdk_11_0.frameworks.Security
diff --git a/pkgs/by-name/ss/sshesame/package.nix b/pkgs/by-name/ss/sshesame/package.nix
index ac9f9b2a55f8..8f600712becc 100644
--- a/pkgs/by-name/ss/sshesame/package.nix
+++ b/pkgs/by-name/ss/sshesame/package.nix
@@ -20,7 +20,7 @@ buildGoModule rec {
 
   ldflags = [ "-s" "-w" ];
 
-  hardeningEnable = lib.optionals (!stdenv.isDarwin) [ "pie" ];
+  hardeningEnable = lib.optionals (!stdenv.hostPlatform.isDarwin) [ "pie" ];
 
   passthru.updateScript = nix-update-script { };
 
diff --git a/pkgs/by-name/st/stalwart-mail/package.nix b/pkgs/by-name/st/stalwart-mail/package.nix
index 7175714c8778..06392d8afc18 100644
--- a/pkgs/by-name/st/stalwart-mail/package.nix
+++ b/pkgs/by-name/st/stalwart-mail/package.nix
@@ -63,17 +63,17 @@ rustPlatform.buildRustPackage {
     openssl
     sqlite
     zstd
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     foundationdb
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
   # skip defaults on darwin because foundationdb is not available
-  buildNoDefaultFeatures = stdenv.isDarwin;
-  buildFeatures = lib.optional (stdenv.isDarwin) [ "sqlite" "postgres" "mysql" "rocks" "elastic" "s3" "redis" ];
+  buildNoDefaultFeatures = stdenv.hostPlatform.isDarwin;
+  buildFeatures = lib.optional (stdenv.hostPlatform.isDarwin) [ "sqlite" "postgres" "mysql" "rocks" "elastic" "s3" "redis" ];
 
   env = {
     OPENSSL_NO_VENDOR = true;
@@ -146,7 +146,7 @@ rustPlatform.buildRustPackage {
     "--skip=smtp::inbound::vrfy::vrfy_expn"
   ];
 
-  doCheck = !(stdenv.isLinux && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
 
   passthru = {
     webadmin = callPackage ./webadmin.nix { };
diff --git a/pkgs/by-name/st/static-server/package.nix b/pkgs/by-name/st/static-server/package.nix
index 4ec8b8c20852..3be8eec4b80d 100644
--- a/pkgs/by-name/st/static-server/package.nix
+++ b/pkgs/by-name/st/static-server/package.nix
@@ -36,7 +36,7 @@ buildGoModule rec {
   ldflags = [ "-s" "-w" ];
 
   # tests sometimes fail with SIGQUIT on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   passthru.tests = {
     version = testers.testVersion {
diff --git a/pkgs/by-name/st/stormlib/package.nix b/pkgs/by-name/st/stormlib/package.nix
index 90a748ca801f..090ada0d89f7 100644
--- a/pkgs/by-name/st/stormlib/package.nix
+++ b/pkgs/by-name/st/stormlib/package.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation (finalAttrs: {
     libtomcrypt
     zlib
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Carbon
   ];
 
@@ -56,6 +56,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ aanderse karolchmist ];
     platforms = lib.platforms.all;
-    broken = stdenv.isDarwin; # installation directory mismatch
+    broken = stdenv.hostPlatform.isDarwin; # installation directory mismatch
   };
 })
diff --git a/pkgs/by-name/st/streamdeck-ui/package.nix b/pkgs/by-name/st/streamdeck-ui/package.nix
index 9f68a707bfca..c739ffa83e0b 100644
--- a/pkgs/by-name/st/streamdeck-ui/package.nix
+++ b/pkgs/by-name/st/streamdeck-ui/package.nix
@@ -52,7 +52,7 @@ python3Packages.buildPythonApplication rec {
       importlib-metadata
       evdev
     ]
-    ++ lib.optionals stdenv.isLinux [ qt6.qtwayland ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ qt6.qtwayland ];
 
   nativeCheckInputs =
     [ xvfb-run ]
diff --git a/pkgs/by-name/st/stu/package.nix b/pkgs/by-name/st/stu/package.nix
index ab74d428cc50..95179b7bcf9e 100644
--- a/pkgs/by-name/st/stu/package.nix
+++ b/pkgs/by-name/st/stu/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage {
 
   cargoHash = "sha256-/a91ONvKG6aRFAnHDkpOQQFtfGlO1WahWM9LdPs75iw=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.CoreGraphics
   ];
diff --git a/pkgs/by-name/su/superscs/package.nix b/pkgs/by-name/su/superscs/package.nix
index f558bec8a208..ae5fb5537be4 100644
--- a/pkgs/by-name/su/superscs/package.nix
+++ b/pkgs/by-name/su/superscs/package.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-Qu7RM6Ew4hEmoIXO0utDDVmjmNX3yt3FxWZXCQ/Xjp4=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile --replace-fail \
       ".so" \
       ".dylib"
diff --git a/pkgs/by-name/su/supersonic/package.nix b/pkgs/by-name/su/supersonic/package.nix
index a3674efe5d00..7964d31d9650 100644
--- a/pkgs/by-name/su/supersonic/package.nix
+++ b/pkgs/by-name/su/supersonic/package.nix
@@ -16,7 +16,7 @@
 , waylandSupport ? false
 }:
 
-assert waylandSupport -> stdenv.isLinux;
+assert waylandSupport -> stdenv.hostPlatform.isLinux;
 
 buildGoModule rec {
   pname = "supersonic" + lib.optionalString waylandSupport "-wayland";
@@ -34,7 +34,7 @@ buildGoModule rec {
   nativeBuildInputs = [
     copyDesktopItems
     pkg-config
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     desktopToDarwinBundle
   ];
 
@@ -44,20 +44,20 @@ buildGoModule rec {
   buildInputs = [
     libglvnd
     mpv-unwrapped
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     xorg.libXxf86vm
     xorg.libX11
-  ] ++ lib.optionals (stdenv.isLinux && !waylandSupport) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && !waylandSupport) [
     xorg.libXrandr
     xorg.libXinerama
     xorg.libXcursor
     xorg.libXi
     xorg.libXext
-  ] ++ lib.optionals (stdenv.isLinux && waylandSupport) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && waylandSupport) [
     wayland
     wayland-protocols
     libxkbcommon
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Cocoa
     darwin.apple_sdk_11_0.frameworks.Kernel
     darwin.apple_sdk_11_0.frameworks.OpenGL
diff --git a/pkgs/by-name/su/surrealdb/package.nix b/pkgs/by-name/su/surrealdb/package.nix
index 9a0c443faa83..b12910e0a6d5 100644
--- a/pkgs/by-name/su/surrealdb/package.nix
+++ b/pkgs/by-name/su/surrealdb/package.nix
@@ -46,7 +46,7 @@ rustPlatform.buildRustPackage rec {
   ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   doCheck = false;
 
diff --git a/pkgs/by-name/sv/svix-server/package.nix b/pkgs/by-name/sv/svix-server/package.nix
index 16eaf01be24d..655214744904 100644
--- a/pkgs/by-name/sv/svix-server/package.nix
+++ b/pkgs/by-name/sv/svix-server/package.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
     protobuf
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
@@ -50,6 +50,6 @@ rustPlatform.buildRustPackage rec {
       "https://github.com/svix/svix-webhooks/releases/tag/v${version}";
     license = licenses.mit;
     maintainers = with maintainers; [ techknowlogick ];
-    broken = stdenv.isx86_64 && stdenv.isDarwin; # aws-lc-sys currently broken on darwin x86_64
+    broken = stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.isDarwin; # aws-lc-sys currently broken on darwin x86_64
   };
 }
diff --git a/pkgs/by-name/sw/switcheroo/package.nix b/pkgs/by-name/sw/switcheroo/package.nix
index 459f4a93793f..d61c2a722f69 100644
--- a/pkgs/by-name/sw/switcheroo/package.nix
+++ b/pkgs/by-name/sw/switcheroo/package.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation (finalAttrs: {
     glib
     gtk4
     libadwaita
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/by-name/sy/symbolicator/package.nix b/pkgs/by-name/sy/symbolicator/package.nix
index 35487a35401a..473f9d64d652 100644
--- a/pkgs/by-name/sy/symbolicator/package.nix
+++ b/pkgs/by-name/sy/symbolicator/package.nix
@@ -38,7 +38,7 @@ rustPlatform.buildRustPackage rec {
     bzip2
     openssl
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/by-name/sy/syncyomi/package.nix b/pkgs/by-name/sy/syncyomi/package.nix
index ee2e6af318fc..81f2982a05be 100644
--- a/pkgs/by-name/sy/syncyomi/package.nix
+++ b/pkgs/by-name/sy/syncyomi/package.nix
@@ -70,7 +70,7 @@ buildGoModule rec {
     "-X main.version=v${version}"
   ];
 
-  postInstall = lib.optionalString (!stdenvNoCC.isDarwin) ''
+  postInstall = lib.optionalString (!stdenvNoCC.hostPlatform.isDarwin) ''
     mv $out/bin/SyncYomi $out/bin/syncyomi
   '';
 
diff --git a/pkgs/by-name/sy/syntax/package.nix b/pkgs/by-name/sy/syntax/package.nix
index eceffd5aa0b4..01b5ade160fb 100644
--- a/pkgs/by-name/sy/syntax/package.nix
+++ b/pkgs/by-name/sy/syntax/package.nix
@@ -25,6 +25,6 @@ buildNpmPackage rec {
     license = licenses.mit;
     maintainers = with maintainers; [ h7x4 ];
     mainProgram = "syntax-cli";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/sy/systemctl-tui/package.nix b/pkgs/by-name/sy/systemctl-tui/package.nix
index c2a1dbec6ff2..c220fcc8547a 100644
--- a/pkgs/by-name/sy/systemctl-tui/package.nix
+++ b/pkgs/by-name/sy/systemctl-tui/package.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-6cFK1wMO5VICfi3tN140XH9inQOkkSfHVogKhTHtQb8=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.AppKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.AppKit ];
 
   passthru = {
     updateScript = nix-update-script;
diff --git a/pkgs/by-name/t-/t-rex/package.nix b/pkgs/by-name/t-/t-rex/package.nix
index f26592e052d0..7c92e49182dd 100644
--- a/pkgs/by-name/t-/t-rex/package.nix
+++ b/pkgs/by-name/t-/t-rex/package.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config rustPlatform.bindgenHook ];
 
   buildInputs = [ gdal openssl ]
-    ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
+    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
 
   meta = with lib; {
     description = "Vector tile server specialized on publishing MVT tiles";
diff --git a/pkgs/by-name/ta/tabby/package.nix b/pkgs/by-name/ta/tabby/package.nix
index 4ebc77e741b1..df01b5c4940a 100644
--- a/pkgs/by-name/ta/tabby/package.nix
+++ b/pkgs/by-name/ta/tabby/package.nix
@@ -19,7 +19,7 @@
 , rocmSupport ? config.rocmSupport
 
 , darwin
-, metalSupport ? stdenv.isDarwin && stdenv.isAarch64
+, metalSupport ? stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64
 
   # one of [ null "cpu" "rocm" "cuda" "metal" ];
 , acceleration ? null
@@ -55,16 +55,16 @@ let
   # If user did not not override the acceleration attribute, then try to use one of
   # - nixpkgs.config.cudaSupport
   # - nixpkgs.config.rocmSupport
-  # - metal if (stdenv.isDarwin && stdenv.isAarch64)
+  # - metal if (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)
   # !! warn if multiple acceleration methods are enabled and default to the first one in the list
   featureDevice = if (builtins.isNull acceleration) then (warnIfMultipleAccelerationMethods availableAccelerations) else acceleration;
 
-  warnIfNotLinux = api: (lib.warnIfNot stdenv.isLinux
+  warnIfNotLinux = api: (lib.warnIfNot stdenv.hostPlatform.isLinux
     "building tabby with `${api}` is only supported on linux; falling back to cpu"
-    stdenv.isLinux);
-  warnIfNotDarwinAarch64 = api: (lib.warnIfNot (stdenv.isDarwin && stdenv.isAarch64)
+    stdenv.hostPlatform.isLinux);
+  warnIfNotDarwinAarch64 = api: (lib.warnIfNot (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)
     "building tabby with `${api}` is only supported on Darwin-aarch64; falling back to cpu"
-    (stdenv.isDarwin && stdenv.isAarch64));
+    (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64));
 
   validAccel = lib.assertOneOf "tabby.featureDevice" featureDevice [ "cpu" "rocm" "cuda" "metal" ];
 
@@ -88,7 +88,7 @@ let
 
   # TODO(ghthor): some of this can be removed
   darwinBuildInputs = [ llamaccpPackage ]
-  ++ optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ++ optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     Foundation
     Accelerate
     CoreVideo
@@ -143,7 +143,7 @@ rustPlatform.buildRustPackage {
   ];
 
   buildInputs = [ openssl ]
-  ++ optionals stdenv.isDarwin darwinBuildInputs
+  ++ optionals stdenv.hostPlatform.isDarwin darwinBuildInputs
   ++ optionals enableCuda cudaBuildInputs
   ++ optionals enableRocm rocmBuildInputs
   ;
@@ -164,6 +164,6 @@ rustPlatform.buildRustPackage {
     mainProgram = "tabby";
     license = licenses.asl20;
     maintainers = [ maintainers.ghthor ];
-    broken = stdenv.isDarwin && !stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/by-name/ta/tailscale-nginx-auth/package.nix b/pkgs/by-name/ta/tailscale-nginx-auth/package.nix
index 919a2e77a66b..9423cb2e46a6 100644
--- a/pkgs/by-name/ta/tailscale-nginx-auth/package.nix
+++ b/pkgs/by-name/ta/tailscale-nginx-auth/package.nix
@@ -15,7 +15,7 @@ buildGo123Module {
     "-X tailscale.com/version.shortStamp=${tailscale.version}"
   ];
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     mv $out/bin/nginx-auth $out/bin/tailscale.nginx-auth
     sed -i -e "s#/usr/sbin#$out/bin#" ./cmd/nginx-auth/tailscale.nginx-auth.service
     install -D -m0444 -t $out/lib/systemd/system ./cmd/nginx-auth/tailscale.nginx-auth.service
diff --git a/pkgs/by-name/ta/tailwindcss-language-server/package.nix b/pkgs/by-name/ta/tailwindcss-language-server/package.nix
index 06865660f79c..f536741b60d8 100644
--- a/pkgs/by-name/ta/tailwindcss-language-server/package.nix
+++ b/pkgs/by-name/ta/tailwindcss-language-server/package.nix
@@ -26,7 +26,7 @@ buildNpmPackage {
   npmDepsHash = "sha256-T7YNHunncSv+z86Td1QuBt4dMGF1ipo85ZhW7U9I0Zw=";
   npmWorkspace = "packages/tailwindcss-language-server";
 
-  buildInputs = [ libsecret ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Security AppKit ]);
+  buildInputs = [ libsecret ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Security AppKit ]);
 
   nativeBuildInputs = [ python3 pkg-config ];
 
diff --git a/pkgs/by-name/ta/talecast/package.nix b/pkgs/by-name/ta/talecast/package.nix
index df0f994d5144..e18d5fd5f22c 100644
--- a/pkgs/by-name/ta/talecast/package.nix
+++ b/pkgs/by-name/ta/talecast/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   passthru = {
     updateScript = nix-update-script { };
diff --git a/pkgs/by-name/ta/taler-depolymerization/package.nix b/pkgs/by-name/ta/taler-depolymerization/package.nix
index 49e14d438d77..d61478b32583 100644
--- a/pkgs/by-name/ta/taler-depolymerization/package.nix
+++ b/pkgs/by-name/ta/taler-depolymerization/package.nix
@@ -35,7 +35,7 @@ rustPlatform.buildRustPackage {
     cp docs/*.conf $out/share/examples
   '';
 
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks;
     [
       CoreFoundation
diff --git a/pkgs/by-name/ta/tangerine/package.nix b/pkgs/by-name/ta/tangerine/package.nix
index 5615d441b80b..1ec2d6b362b9 100644
--- a/pkgs/by-name/ta/tangerine/package.nix
+++ b/pkgs/by-name/ta/tangerine/package.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation {
     homepage = "https://github.com/Aeva/tangerine";
     license = licenses.asl20;
     maintainers = [ maintainers.viraptor ];
-    broken = stdenv.isDarwin; # third_party/naive-surface-nets doesn't find std::execution
+    broken = stdenv.hostPlatform.isDarwin; # third_party/naive-surface-nets doesn't find std::execution
   };
 }
 
diff --git a/pkgs/by-name/ta/tartan/package.nix b/pkgs/by-name/ta/tartan/package.nix
index d73ffdf99bb5..56c18653dfb2 100644
--- a/pkgs/by-name/ta/tartan/package.nix
+++ b/pkgs/by-name/ta/tartan/package.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation {
   };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Tools and Clang plugins for developing code with GLib";
     homepage = "https://gitlab.freedesktop.org/tartan/tartan";
     changelog = "https://gitlab.freedesktop.org/tartan/tartan/-/blob/main/NEWS";
diff --git a/pkgs/by-name/ta/taskwarrior3/package.nix b/pkgs/by-name/ta/taskwarrior3/package.nix
index 26b8d8ecd32c..4be5fdd072c4 100644
--- a/pkgs/by-name/ta/taskwarrior3/package.nix
+++ b/pkgs/by-name/ta/taskwarrior3/package.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
       rustc
       rustPlatform.cargoSetupHook
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # darwin dependencies
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/by-name/te/teams-for-linux/package.nix b/pkgs/by-name/te/teams-for-linux/package.nix
index 4c532f453800..c1ecf1a4bb1e 100644
--- a/pkgs/by-name/te/teams-for-linux/package.nix
+++ b/pkgs/by-name/te/teams-for-linux/package.nix
@@ -29,9 +29,9 @@ buildNpmPackage rec {
   nativeBuildInputs = [
     makeWrapper
     versionCheckHook
-  ] ++ lib.optionals (stdenv.isLinux) [ copyDesktopItems ];
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux) [ copyDesktopItems ];
 
-  doInstallCheck = stdenv.isLinux;
+  doInstallCheck = stdenv.hostPlatform.isLinux;
 
   env = {
     # disable code signing on Darwin
@@ -60,7 +60,7 @@ buildNpmPackage rec {
       runHook preInstall
 
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       mkdir -p $out/share/{applications,teams-for-linux}
       cp dist/*-unpacked/resources/app.asar $out/share/teams-for-linux/
 
@@ -82,7 +82,7 @@ buildNpmPackage rec {
         --add-flags "$out/share/teams-for-linux/app.asar" \
         --add-flags "\''${NIXOS_OZONE_WL:+\''${WAYLAND_DISPLAY:+--ozone-platform-hint=auto --enable-features=WaylandWindowDecorations}}"
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/Applications
       cp -r dist/mac*/teams-for-linux.app $out/Applications
       makeWrapper $out/Applications/teams-for-linux.app/Contents/MacOS/teams-for-linux $out/bin/teams-for-linux
diff --git a/pkgs/by-name/te/telegraf/package.nix b/pkgs/by-name/te/telegraf/package.nix
index bda948d342aa..cb98c85bf45b 100644
--- a/pkgs/by-name/te/telegraf/package.nix
+++ b/pkgs/by-name/te/telegraf/package.nix
@@ -34,7 +34,7 @@ buildGo123Module rec {
     version = testers.testVersion {
       package = telegraf;
     };
-  } // lib.optionalAttrs stdenv.isLinux {
+  } // lib.optionalAttrs stdenv.hostPlatform.isLinux {
     inherit (nixosTests) telegraf;
   };
 
diff --git a/pkgs/by-name/te/telescope/package.nix b/pkgs/by-name/te/telescope/package.nix
index 1a4db30c9058..801cae0b123c 100644
--- a/pkgs/by-name/te/telescope/package.nix
+++ b/pkgs/by-name/te/telescope/package.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     libgrapheme
     libressl
     ncurses
-  ] ++ lib.optional stdenv.isDarwin memstreamHook;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin memstreamHook;
 
   configureFlags = [
     "HOSTCC=${buildPackages.stdenv.cc}/bin/${buildPackages.stdenv.cc.targetPrefix}cc"
diff --git a/pkgs/by-name/th/the-legend-of-edgar/package.nix b/pkgs/by-name/th/the-legend-of-edgar/package.nix
index 509c6e65524b..5ab2fd0858a6 100644
--- a/pkgs/by-name/th/the-legend-of-edgar/package.nix
+++ b/pkgs/by-name/th/the-legend-of-edgar/package.nix
@@ -68,6 +68,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "edgar";
     maintainers = with lib.maintainers; [ AndersonTorres ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/th/the-powder-toy/package.nix b/pkgs/by-name/th/the-powder-toy/package.nix
index 25da4e5d8818..771965b4068a 100644
--- a/pkgs/by-name/th/the-powder-toy/package.nix
+++ b/pkgs/by-name/th/the-powder-toy/package.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     meson
     ninja
     pkg-config
-  ] ++ lib.optional stdenv.isLinux copyDesktopItems;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux copyDesktopItems;
 
   buildInputs = [
     bzip2
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
     luajit
     SDL2
     zlib
-  ] ++ lib.optional stdenv.isDarwin Cocoa;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 
   mesonFlags = [ "-Dworkaround_elusive_bzip2=false" ];
 
diff --git a/pkgs/by-name/th/thefuck/package.nix b/pkgs/by-name/th/thefuck/package.nix
index 7d908b9f8d99..e0cd1b7b5d0c 100644
--- a/pkgs/by-name/th/thefuck/package.nix
+++ b/pkgs/by-name/th/thefuck/package.nix
@@ -33,7 +33,7 @@ python311Packages.buildPythonApplication rec {
       pytest-mock
     ]);
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     "test_settings_defaults"
     "test_from_file"
     "test_from_env"
diff --git a/pkgs/by-name/th/thonny/package.nix b/pkgs/by-name/th/thonny/package.nix
index 91c40a3c7b3c..445a7954dfdc 100644
--- a/pkgs/by-name/th/thonny/package.nix
+++ b/pkgs/by-name/th/thonny/package.nix
@@ -21,7 +21,7 @@ buildPythonApplication rec {
     hash = "sha256-/ms2RESnV3bsJpK1zYYLHNUu1FtA6PntaseTbKMfUMc=";
   };
 
-  nativeBuildInputs = [ copyDesktopItems ] ++ lib.optional stdenv.isDarwin desktopToDarwinBundle;
+  nativeBuildInputs = [ copyDesktopItems ] ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   desktopItems = [
     (makeDesktopItem {
@@ -51,7 +51,7 @@ buildPythonApplication rec {
         asttokens
         send2trash
       ]
-      ++ lib.optionals stdenv.isLinux [
+      ++ lib.optionals stdenv.hostPlatform.isLinux [
         dbus-next
       ]
     );
diff --git a/pkgs/by-name/ti/tidgi/package.nix b/pkgs/by-name/ti/tidgi/package.nix
index 20f0b4a194d1..0717dd8239f4 100644
--- a/pkgs/by-name/ti/tidgi/package.nix
+++ b/pkgs/by-name/ti/tidgi/package.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
   version = "0.9.6";
 
   src =
-    if stdenv.isAarch64
+    if stdenv.hostPlatform.isAarch64
     then
       fetchurl
       {
diff --git a/pkgs/by-name/ti/tinymist/package.nix b/pkgs/by-name/ti/tinymist/package.nix
index 9928080dd117..53d749a50acb 100644
--- a/pkgs/by-name/ti/tinymist/package.nix
+++ b/pkgs/by-name/ti/tinymist/package.nix
@@ -44,7 +44,7 @@ rustPlatform.buildRustPackage rec {
       openssl
       zlib
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk_11_0.frameworks.CoreFoundation
       darwin.apple_sdk_11_0.frameworks.CoreServices
       darwin.apple_sdk_11_0.frameworks.Security
diff --git a/pkgs/by-name/tl/tlclient/package.nix b/pkgs/by-name/tl/tlclient/package.nix
index a789d391ccbe..04dc61b4e703 100644
--- a/pkgs/by-name/tl/tlclient/package.nix
+++ b/pkgs/by-name/tl/tlclient/package.nix
@@ -72,7 +72,7 @@ stdenv.mkDerivation (
       changelog = "https://www.cendio.com/thinlinc/docs/relnotes/${version}/";
       maintainers = with lib.maintainers; [ felixalbrigtsen ];
       platforms = with lib.platforms; linux ++ darwin ++ windows;
-      broken = !(stdenv.isLinux && stdenv.isx86_64);
+      broken = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64);
       mainProgram = "tlclient";
     };
   }
diff --git a/pkgs/by-name/tl/tlrc/package.nix b/pkgs/by-name/tl/tlrc/package.nix
index e0e46552352a..86e9fe7861b8 100644
--- a/pkgs/by-name/tl/tlrc/package.nix
+++ b/pkgs/by-name/tl/tlrc/package.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/by-name/to/tootik/package.nix b/pkgs/by-name/to/tootik/package.nix
index 6eb9d0d715b3..1dc3a8db3c07 100644
--- a/pkgs/by-name/to/tootik/package.nix
+++ b/pkgs/by-name/to/tootik/package.nix
@@ -23,7 +23,7 @@ buildGoModule rec {
 
   tags = [ "fts5" ];
 
-  doCheck = !(stdenv.isDarwin && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64);
 
   meta = {
     description = "Federated nanoblogging service with a Gemini frontend";
diff --git a/pkgs/by-name/to/tor-browser/package.nix b/pkgs/by-name/to/tor-browser/package.nix
index 154f70c83e00..c0b1dfb33d42 100644
--- a/pkgs/by-name/to/tor-browser/package.nix
+++ b/pkgs/by-name/to/tor-browser/package.nix
@@ -29,10 +29,10 @@
 , pciutils
 , zlib
 
-, libnotifySupport ? stdenv.isLinux
+, libnotifySupport ? stdenv.hostPlatform.isLinux
 , libnotify
 
-, waylandSupport ? stdenv.isLinux
+, waylandSupport ? stdenv.hostPlatform.isLinux
 , libxkbcommon
 , libdrm
 , libGL
diff --git a/pkgs/by-name/to/toxic/package.nix b/pkgs/by-name/to/toxic/package.nix
index 54462fdaade1..036c96dd47d5 100644
--- a/pkgs/by-name/to/toxic/package.nix
+++ b/pkgs/by-name/to/toxic/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     libtoxcore libsodium ncurses curl gdk-pixbuf libnotify
-  ] ++ lib.optionals (!stdenv.isAarch32) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isAarch32) [
     openal libopus libvpx freealut qrencode
   ];
   nativeBuildInputs = [ pkg-config libconfig ];
diff --git a/pkgs/by-name/tp/tpnote/package.nix b/pkgs/by-name/tp/tpnote/package.nix
index a19eed1281dc..ea58c45f579b 100644
--- a/pkgs/by-name/tp/tpnote/package.nix
+++ b/pkgs/by-name/tp/tpnote/package.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     oniguruma
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
      AppKit
      CoreServices
      SystemConfiguration
diff --git a/pkgs/by-name/tr/tracker-miners/package.nix b/pkgs/by-name/tr/tracker-miners/package.nix
index fb882da42b73..963df6517e35 100644
--- a/pkgs/by-name/tr/tracker-miners/package.nix
+++ b/pkgs/by-name/tr/tracker-miners/package.nix
@@ -105,12 +105,12 @@ stdenv.mkDerivation (finalAttrs: {
     libxml2
     poppler
     taglib
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libseccomp
     networkmanager
     systemd
     upower
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     e2fsprogs
   ];
 
@@ -122,7 +122,7 @@ stdenv.mkDerivation (finalAttrs: {
     # security issue since then. Despite a patch now being availab, we're opting
     # to be safe due to the general state of the project
     "-Dminer_rss=false"
-  ] ++ lib.optionals (!stdenv.isLinux) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isLinux) [
     "-Dbattery_detection=none"
     "-Dnetwork_manager=disabled"
     "-Dsystemd_user_services=false"
diff --git a/pkgs/by-name/tr/tracy/package.nix b/pkgs/by-name/tr/tracy/package.nix
index 1c726affff47..5f03796e50ac 100644
--- a/pkgs/by-name/tr/tracy/package.nix
+++ b/pkgs/by-name/tr/tracy/package.nix
@@ -11,7 +11,7 @@
 , pkg-config
 , tbb
 
-, withWayland ? stdenv.isLinux
+, withWayland ? stdenv.hostPlatform.isLinux
 , libxkbcommon
 , wayland
 }:
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-DN1ExvQ5wcIUyhMAfiakFbZkDsx+5l8VMtYGvSdboPA=";
   };
 
-  patches = lib.optionals (stdenv.isDarwin && !(lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11")) [
+  patches = lib.optionals (stdenv.hostPlatform.isDarwin && !(lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11")) [
     ./0001-remove-unifiedtypeidentifiers-framework
   ];
 
@@ -37,25 +37,25 @@ stdenv.mkDerivation rec {
     capstone
     freetype
     glfw
-  ] ++ lib.optionals (stdenv.isLinux && withWayland) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && withWayland) [
     libxkbcommon
     wayland
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     dbus
     hicolor-icon-theme
     tbb
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.Carbon
-  ] ++ lib.optionals (stdenv.isDarwin && lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11") [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11") [
     darwin.apple_sdk.frameworks.UniformTypeIdentifiers
   ];
 
   env.NIX_CFLAGS_COMPILE = toString ([ ]
     # Apple's compiler finds a format string security error on
     # ../../../server/TracyView.cpp:649:34, preventing building.
-    ++ lib.optional stdenv.isDarwin "-Wno-format-security"
-    ++ lib.optional stdenv.isLinux "-ltbb"
+    ++ lib.optional stdenv.hostPlatform.isDarwin "-Wno-format-security"
+    ++ lib.optional stdenv.hostPlatform.isLinux "-ltbb"
     ++ lib.optional stdenv.cc.isClang "-faligned-allocation");
 
   buildPhase = ''
@@ -66,7 +66,7 @@ stdenv.mkDerivation rec {
     make -j $NIX_BUILD_CORES -C import-chrome/build/unix release
     make -j $NIX_BUILD_CORES -C library/unix release
     make -j $NIX_BUILD_CORES -C profiler/build/unix release \
-      ${lib.optionalString (stdenv.isLinux && !withWayland) "LEGACY=1"}
+      ${lib.optionalString (stdenv.hostPlatform.isLinux && !withWayland) "LEGACY=1"}
     make -j $NIX_BUILD_CORES -C update/build/unix release
 
     runHook postBuild
@@ -89,7 +89,7 @@ stdenv.mkDerivation rec {
     cp -p public/client/*.{h,hpp} $out/include/Tracy/client
     cp -p public/common/*.{h,hpp} $out/include/Tracy/common
     cp -p public/tracy/*.{h,hpp} $out/include/Tracy/tracy
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace extra/desktop/tracy.desktop \
       --replace Exec=/usr/bin/tracy Exec=tracy
 
@@ -102,7 +102,7 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change libcapstone.4.dylib ${capstone}/lib/libcapstone.4.dylib $out/bin/tracy
   '';
 
diff --git a/pkgs/by-name/tr/transmission_3/package.nix b/pkgs/by-name/tr/transmission_3/package.nix
index 9372ef6dcf5f..a97e2cbb3e7f 100644
--- a/pkgs/by-name/tr/transmission_3/package.nix
+++ b/pkgs/by-name/tr/transmission_3/package.nix
@@ -88,8 +88,8 @@ stdenv.mkDerivation (finalAttrs: {
   ++ lib.optionals enableQt [ qt5.qttools qt5.qtbase ]
   ++ lib.optionals enableGTK3 [ gtk3 xorg.libpthreadstubs ]
   ++ lib.optionals enableSystemd [ systemd ]
-  ++ lib.optionals stdenv.isLinux [ inotify-tools ]
-  ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  ++ lib.optionals stdenv.hostPlatform.isLinux [ inotify-tools ]
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   postInstall = ''
     mkdir $apparmor
@@ -102,7 +102,7 @@ stdenv.mkDerivation (finalAttrs: {
       include "${apparmorRulesFromClosure { name = "transmission-daemon"; } ([
         curl libevent openssl pcre zlib libnatpmp miniupnpc
       ] ++ lib.optionals enableSystemd [ systemd ]
-        ++ lib.optionals stdenv.isLinux [ inotify-tools ]
+        ++ lib.optionals stdenv.hostPlatform.isLinux [ inotify-tools ]
       )}"
       r @{PROC}/sys/kernel/random/uuid,
       r @{PROC}/sys/vm/overcommit_memory,
diff --git a/pkgs/by-name/tr/trealla/package.nix b/pkgs/by-name/tr/trealla/package.nix
index 8a3650638312..288b89a04ae6 100644
--- a/pkgs/by-name/tr/trealla/package.nix
+++ b/pkgs/by-name/tr/trealla/package.nix
@@ -100,6 +100,6 @@ stdenv.mkDerivation (finalAttrs: {
     ];
     mainProgram = "tpl";
     platforms = lib.platforms.all;
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 })
diff --git a/pkgs/by-name/tr/trigger-control/package.nix b/pkgs/by-name/tr/trigger-control/package.nix
index 3398a3fe0aab..838aae472d64 100644
--- a/pkgs/by-name/tr/trigger-control/package.nix
+++ b/pkgs/by-name/tr/trigger-control/package.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
     SDL2
     dbus
     libnotify
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libdecor
   ];
 
@@ -62,7 +62,7 @@ stdenv.mkDerivation (finalAttrs: {
     runHook postInstall
   '';
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/trigger-control \
       --prefix PATH : ${lib.makeBinPath [ zenity ]}
   '';
diff --git a/pkgs/by-name/tr/triton-llvm/package.nix b/pkgs/by-name/tr/triton-llvm/package.nix
index 90a45c133c73..d45aa2fafe65 100644
--- a/pkgs/by-name/tr/triton-llvm/package.nix
+++ b/pkgs/by-name/tr/triton-llvm/package.nix
@@ -149,7 +149,7 @@ in stdenv.mkDerivation (finalAttrs: {
 
     substituteInPlace unittests/Support/CMakeLists.txt \
       --replace "Path.cpp" ""
-  '' + lib.optionalString stdenv.isAarch64 ''
+  '' + lib.optionalString stdenv.hostPlatform.isAarch64 ''
     # Not sure why this fails
     rm test/tools/llvm-exegesis/AArch64/latency-by-opcode-name.s
   '';
@@ -161,7 +161,7 @@ in stdenv.mkDerivation (finalAttrs: {
   doCheck = buildTests;
 
   nativeCheckInputs = [ which ]
-    ++ lib.optionals stdenv.isDarwin [ sysctl ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ sysctl ];
 
   checkTarget = "check-all";
   requiredSystemFeatures = [ "big-parallel" ];
diff --git a/pkgs/by-name/tr/trunk-ng/package.nix b/pkgs/by-name/tr/trunk-ng/package.nix
index 3a7f9bd5ba05..73af1faaba29 100644
--- a/pkgs/by-name/tr/trunk-ng/package.nix
+++ b/pkgs/by-name/tr/trunk-ng/package.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = if stdenv.isDarwin
+  buildInputs = if stdenv.hostPlatform.isDarwin
     then [ libiconv CoreServices Security SystemConfiguration ]
     else [ openssl ];
 
diff --git a/pkgs/by-name/ts/tsukimi/package.nix b/pkgs/by-name/ts/tsukimi/package.nix
index fc984dde21a0..7d8889079a7f 100644
--- a/pkgs/by-name/ts/tsukimi/package.nix
+++ b/pkgs/by-name/ts/tsukimi/package.nix
@@ -91,6 +91,6 @@ rustPlatform.buildRustPackage rec {
     platforms = lib.platforms.linux;
     # libmpv2 crate fail to compile
     # expected raw pointer `*const u8` found raw pointer `*const i8`
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/by-name/tu/tuifimanager/package.nix b/pkgs/by-name/tu/tuifimanager/package.nix
index 15706439a30a..26b30a477da0 100644
--- a/pkgs/by-name/tu/tuifimanager/package.nix
+++ b/pkgs/by-name/tu/tuifimanager/package.nix
@@ -6,9 +6,9 @@
 , gnome-themes-extra
 , qt6
 , makeWrapper
-, x11Support ? stdenv.isLinux
+, x11Support ? stdenv.hostPlatform.isLinux
 # pypinput is marked as broken for darwin
-, pynputSupport ? stdenv.isLinux
+, pynputSupport ? stdenv.hostPlatform.isLinux
 # Experimental Drag & Drop support requires x11 & pyinput suport
 , hasDndSupport ? x11Support && pynputSupport
 , enableDragAndDrop ? false
diff --git a/pkgs/by-name/tu/tup/package.nix b/pkgs/by-name/tu/tup/package.nix
index c6614db17832..db6a6058a00b 100644
--- a/pkgs/by-name/tu/tup/package.nix
+++ b/pkgs/by-name/tu/tup/package.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchFromGitHub, fuse3, macfuse-stubs, pkg-config, sqlite, pcre2 }:
 
 let
-  fuse = if stdenv.isDarwin then macfuse-stubs else fuse3;
+  fuse = if stdenv.hostPlatform.isDarwin then macfuse-stubs else fuse3;
 in stdenv.mkDerivation rec {
   pname = "tup";
   version = "0.8";
@@ -71,6 +71,6 @@ in stdenv.mkDerivation rec {
     # ../../../../os-specific/darwin/apple-sdk/default.nix
     #
     # https://github.com/gittup/tup/commit/3697c74
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/tu/turbo-unwrapped/package.nix b/pkgs/by-name/tu/turbo-unwrapped/package.nix
index d3f0959577d1..f9228f310cc1 100644
--- a/pkgs/by-name/tu/turbo-unwrapped/package.nix
+++ b/pkgs/by-name/tu/turbo-unwrapped/package.nix
@@ -42,7 +42,7 @@ rustPlatform.buildRustPackage rec {
       protobuf
     ]
     # https://github.com/vercel/turbo/blob/ea740706e0592b3906ab34c7cfa1768daafc2a84/CONTRIBUTING.md#linux-dependencies
-    ++ lib.optional stdenv.isLinux llvmPackages.bintools;
+    ++ lib.optional stdenv.hostPlatform.isLinux llvmPackages.bintools;
 
   buildInputs =
     [
@@ -51,7 +51,7 @@ rustPlatform.buildRustPackage rec {
       rust-jemalloc-sys
       zlib
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk_11_0.frameworks;
       [
         CoreFoundation
diff --git a/pkgs/by-name/ty/typst-live/package.nix b/pkgs/by-name/ty/typst-live/package.nix
index 8968adbb5e1b..3912ed217b51 100644
--- a/pkgs/by-name/ty/typst-live/package.nix
+++ b/pkgs/by-name/ty/typst-live/package.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
     makeWrapper
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/by-name/ty/typst-lsp/package.nix b/pkgs/by-name/ty/typst-lsp/package.nix
index cc8e2d203e66..bb4d0b12f39b 100644
--- a/pkgs/by-name/ty/typst-lsp/package.nix
+++ b/pkgs/by-name/ty/typst-lsp/package.nix
@@ -39,14 +39,14 @@ rustPlatform.buildRustPackage rec {
     ln -s ${./Cargo.lock} Cargo.lock
   '';
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   checkFlags =
     [
       # requires internet access
       "--skip=workspace::package::external::remote_repo::test::full_download"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # both tests fail on darwin with 'Attempted to create a NULL object.'
       "--skip=workspace::fs::local::test::read"
       "--skip=workspace::package::external::manager::test::local_package"
diff --git a/pkgs/by-name/ty/typst/package.nix b/pkgs/by-name/ty/typst/package.nix
index aa71277fefab..de06edfee2f3 100644
--- a/pkgs/by-name/ty/typst/package.nix
+++ b/pkgs/by-name/ty/typst/package.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
     xz
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.Security
diff --git a/pkgs/by-name/ty/typstyle/package.nix b/pkgs/by-name/ty/typstyle/package.nix
index 906a9738f7cd..ec84a2a2d526 100644
--- a/pkgs/by-name/ty/typstyle/package.nix
+++ b/pkgs/by-name/ty/typstyle/package.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     libgit2
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.Security
diff --git a/pkgs/by-name/uc/ucg/package.nix b/pkgs/by-name/uc/ucg/package.nix
index 99d1b90c43df..7ac909b25686 100644
--- a/pkgs/by-name/uc/ucg/package.nix
+++ b/pkgs/by-name/uc/ucg/package.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "ucg";
     maintainers = with lib.maintainers; [ AndersonTorres ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isAarch64 || stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isAarch64 || stdenv.hostPlatform.isDarwin;
   };
 })
 # TODO: report upstream
diff --git a/pkgs/by-name/uc/uclibc-ng/package.nix b/pkgs/by-name/uc/uclibc-ng/package.nix
index 011c6bfd8737..8869dce9d187 100644
--- a/pkgs/by-name/uc/uclibc-ng/package.nix
+++ b/pkgs/by-name/uc/uclibc-ng/package.nix
@@ -49,7 +49,7 @@ let
     KERNEL_HEADERS "${linuxHeaders}/include"
   '' + lib.optionalString (stdenv.hostPlatform.gcc.float or "" == "soft") ''
     UCLIBC_HAS_FPU n
-  '' + lib.optionalString (stdenv.isAarch32 && isCross) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isAarch32 && isCross) ''
     CONFIG_ARM_EABI y
     ARCH_WANTS_BIG_ENDIAN n
     ARCH_BIG_ENDIAN n
diff --git a/pkgs/by-name/ue/ueberzugpp/package.nix b/pkgs/by-name/ue/ueberzugpp/package.nix
index 78c1f817ad6a..0422c54a9d16 100644
--- a/pkgs/by-name/ue/ueberzugpp/package.nix
+++ b/pkgs/by-name/ue/ueberzugpp/package.nix
@@ -18,14 +18,14 @@
 , cli11
 , libexif
 , range-v3
-, enableOpencv ? stdenv.isLinux
+, enableOpencv ? stdenv.hostPlatform.isLinux
 , opencv
-, enableWayland ? stdenv.isLinux
+, enableWayland ? stdenv.hostPlatform.isLinux
 , extra-cmake-modules
 , wayland
 , wayland-protocols
 , wayland-scanner
-, enableX11 ? stdenv.isLinux
+, enableX11 ? stdenv.hostPlatform.isLinux
 , xorg
 }:
 
@@ -85,7 +85,7 @@ stdenv.mkDerivation rec {
   ];
 
   # error: aligned deallocation function of type 'void (void *, std::align_val_t) noexcept' is only available on macOS 10.14 or newer
-  preBuild = lib.optionalString (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11.0") ''
+  preBuild = lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11.0") ''
     export MACOSX_DEPLOYMENT_TARGET=10.14
   '';
 
diff --git a/pkgs/by-name/ui/uiua/package.nix b/pkgs/by-name/ui/uiua/package.nix
index a3d6dd08bbab..5bcf16fdd8aa 100644
--- a/pkgs/by-name/ui/uiua/package.nix
+++ b/pkgs/by-name/ui/uiua/package.nix
@@ -30,16 +30,16 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-4XHKcmOeaeSGfl7uvQQdhm29DBWEdZLX021d9+Ebrww=";
 
   nativeBuildInputs =
-    lib.optionals stdenv.isDarwin [ rustPlatform.bindgenHook ]
+    lib.optionals stdenv.hostPlatform.isDarwin [ rustPlatform.bindgenHook ]
     ++ lib.optionals audioSupport [ pkg-config ];
 
   buildInputs =
-    lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isDarwin [
       AppKit
       CoreServices
     ]
-    ++ lib.optionals (audioSupport && stdenv.isDarwin) [ AudioUnit ]
-    ++ lib.optionals (audioSupport && stdenv.isLinux) [ alsa-lib ];
+    ++ lib.optionals (audioSupport && stdenv.hostPlatform.isDarwin) [ AudioUnit ]
+    ++ lib.optionals (audioSupport && stdenv.hostPlatform.isLinux) [ alsa-lib ];
 
   buildFeatures = lib.optional audioSupport "audio";
 
diff --git a/pkgs/by-name/un/unbound/package.nix b/pkgs/by-name/un/unbound/package.nix
index 0d827159358f..9c789a3b0564 100644
--- a/pkgs/by-name/un/unbound/package.nix
+++ b/pkgs/by-name/un/unbound/package.nix
@@ -36,7 +36,7 @@
 , withRedis ? false
 # Avoid .lib depending on lib.getLib openssl
 # The build gets a little hacky, so in some cases we disable this approach.
-, withSlimLib ? stdenv.isLinux && !stdenv.hostPlatform.isMusl && !withDNSTAP
+, withSlimLib ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isMusl && !withDNSTAP
 # enable support for python plugins in unbound: note this is distinct from pyunbound
 # see https://unbound.docs.nlnetlabs.nl/en/latest/developer/python-modules.html
 , withPythonModule ? false
diff --git a/pkgs/by-name/un/unciv/package.nix b/pkgs/by-name/un/unciv/package.nix
index ff72272c6c53..5188209732f5 100644
--- a/pkgs/by-name/un/unciv/package.nix
+++ b/pkgs/by-name/un/unciv/package.nix
@@ -26,7 +26,7 @@ let
     hash = "sha256-Zuz+HGfxjGviGBKTiHdIFXF8UMRLEIfM8f+LIB/xonk=";
   };
 
-  envLibPath = lib.makeLibraryPath (lib.optionals stdenv.isLinux [
+  envLibPath = lib.makeLibraryPath (lib.optionals stdenv.hostPlatform.isLinux [
     libGL
     libpulseaudio
     libXxf86vm
diff --git a/pkgs/by-name/un/unimap/package.nix b/pkgs/by-name/un/unimap/package.nix
index 7563c1f50535..eafe26962cec 100644
--- a/pkgs/by-name/un/unimap/package.nix
+++ b/pkgs/by-name/un/unimap/package.nix
@@ -30,16 +30,16 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [
     installShellFiles
     makeBinaryWrapper
-  ] ++ lib.optionals (stdenv.hostPlatform.isAarch && stdenv.isLinux) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isAarch && stdenv.hostPlatform.isLinux) [
     pkg-config
   ];
 
   # only depends on openssl on aarch/arm linux
-  buildInputs = lib.optionals (stdenv.hostPlatform.isAarch && stdenv.isLinux) [
+  buildInputs = lib.optionals (stdenv.hostPlatform.isAarch && stdenv.hostPlatform.isLinux) [
     openssl
   ];
 
-  env = lib.optionalAttrs (stdenv.hostPlatform.isAarch && stdenv.isLinux) {
+  env = lib.optionalAttrs (stdenv.hostPlatform.isAarch && stdenv.hostPlatform.isLinux) {
     OPENSSL_NO_VENDOR = true;
   };
 
diff --git a/pkgs/by-name/un/unison-fsmonitor/package.nix b/pkgs/by-name/un/unison-fsmonitor/package.nix
index b351071b6d30..84d367285c02 100644
--- a/pkgs/by-name/un/unison-fsmonitor/package.nix
+++ b/pkgs/by-name/un/unison-fsmonitor/package.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
   };
   cargoHash = "sha256-eKRayFU3xq2uo6YeFqcTPLInZYlympH6Z01vOCVsVqQ=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/by-name/un/unison/package.nix b/pkgs/by-name/un/unison/package.nix
index 400c73e105b4..d0298c7f1584 100644
--- a/pkgs/by-name/un/unison/package.nix
+++ b/pkgs/by-name/un/unison/package.nix
@@ -6,7 +6,7 @@
 , makeDesktopItem
 , wrapGAppsHook3
 , gsettings-desktop-schemas
-, enableX11 ? !stdenv.isDarwin
+, enableX11 ? !stdenv.hostPlatform.isDarwin
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -58,7 +58,7 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ nevivurn ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin && enableX11; # unison-gui and uimac are broken on darwin
+    broken = stdenv.hostPlatform.isDarwin && enableX11; # unison-gui and uimac are broken on darwin
     mainProgram = if enableX11 then "unison-gui" else "unison";
   };
 })
diff --git a/pkgs/by-name/un/universal-ctags/package.nix b/pkgs/by-name/un/universal-ctags/package.nix
index 09186886d507..eda2fc6a8176 100644
--- a/pkgs/by-name/un/universal-ctags/package.nix
+++ b/pkgs/by-name/un/universal-ctags/package.nix
@@ -43,8 +43,8 @@ stdenv.mkDerivation (finalAttrs: {
     libxml2
     jansson
   ]
-  ++ lib.optional stdenv.isDarwin libiconv
-  ++ lib.optional stdenv.isLinux libseccomp;
+  ++ lib.optional stdenv.hostPlatform.isDarwin libiconv
+  ++ lib.optional stdenv.hostPlatform.isLinux libseccomp;
 
   configureFlags = [ "--enable-tmpdir=/tmp" ];
 
diff --git a/pkgs/by-name/un/unrar-free/package.nix b/pkgs/by-name/un/unrar-free/package.nix
index 176a01a45640..72ca626c8933 100644
--- a/pkgs/by-name/un/unrar-free/package.nix
+++ b/pkgs/by-name/un/unrar-free/package.nix
@@ -37,6 +37,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "unrar-free";
     maintainers = with lib.maintainers; [ thiagokokada ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/up/upsun/package.nix b/pkgs/by-name/up/upsun/package.nix
index 378226a1cbd4..fd1242e59330 100644
--- a/pkgs/by-name/up/upsun/package.nix
+++ b/pkgs/by-name/up/upsun/package.nix
@@ -8,11 +8,11 @@
 }:
 
 let versions = lib.importJSON ./versions.json;
-    arch = if stdenvNoCC.isx86_64 then "amd64"
-           else if stdenvNoCC.isAarch64 then "arm64"
+    arch = if stdenvNoCC.hostPlatform.isx86_64 then "amd64"
+           else if stdenvNoCC.hostPlatform.isAarch64 then "arm64"
            else throw "Unsupported architecture";
-    os = if stdenvNoCC.isLinux then "linux"
-         else if stdenvNoCC.isDarwin then "darwin"
+    os = if stdenvNoCC.hostPlatform.isLinux then "linux"
+         else if stdenvNoCC.hostPlatform.isDarwin then "darwin"
          else throw "Unsupported os";
     versionInfo = versions."${os}-${arch}";
     inherit (versionInfo) hash url;
diff --git a/pkgs/by-name/ut/ut1999/package.nix b/pkgs/by-name/ut/ut1999/package.nix
index 98f4690eb21c..db063696996f 100644
--- a/pkgs/by-name/ut/ut1999/package.nix
+++ b/pkgs/by-name/ut/ut1999/package.nix
@@ -63,21 +63,21 @@ in stdenv.mkDerivation {
     stdenv.cc.cc
   ];
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     copyDesktopItems
     autoPatchelfHook
     imagemagick
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     undmg
   ];
 
   installPhase = let
-    outPrefix = if stdenv.isDarwin then "$out/UnrealTournament.app/Contents/MacOS" else "$out";
+    outPrefix = if stdenv.hostPlatform.isDarwin then "$out/UnrealTournament.app/Contents/MacOS" else "$out";
   in ''
     runHook preInstall
 
     mkdir -p $out/bin
-    cp -r ${if stdenv.isDarwin then "UnrealTournament.app" else "./*"} $out
+    cp -r ${if stdenv.hostPlatform.isDarwin then "UnrealTournament.app" else "./*"} $out
     chmod -R 755 $out
     cd ${outPrefix}
 
@@ -86,7 +86,7 @@ in stdenv.mkDerivation {
 
     cp -n ${unpackGog}/Textures/* ./Textures || true
     cp -n ${unpackGog}/System/*.{u,int} ./System || true
-  '' + lib.optionalString (stdenv.isLinux) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isLinux) ''
     ln -s "$out/${systemDir}/ut-bin" "$out/bin/ut1999"
     ln -s "$out/${systemDir}/ucc-bin" "$out/bin/ut1999-ucc"
 
diff --git a/pkgs/by-name/uv/uv/package.nix b/pkgs/by-name/uv/uv/package.nix
index 96e5941d73f0..7b507ceebd62 100644
--- a/pkgs/by-name/uv/uv/package.nix
+++ b/pkgs/by-name/uv/uv/package.nix
@@ -46,7 +46,7 @@ python3Packages.buildPythonApplication rec {
 
   buildInputs = [
     libiconv
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   dontUseCmakeConfigure = true;
 
diff --git a/pkgs/by-name/ux/uxn/package.nix b/pkgs/by-name/ux/uxn/package.nix
index 721d82c6fdd6..0a9db5026aa3 100644
--- a/pkgs/by-name/ux/uxn/package.nix
+++ b/pkgs/by-name/ux/uxn/package.nix
@@ -64,6 +64,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with lib.maintainers; [ AndersonTorres ];
     mainProgram = "uxnemu";
     inherit (SDL2.meta) platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/va/vale-ls/package.nix b/pkgs/by-name/va/vale-ls/package.nix
index a6a84d4a2ce0..0a09952d51af 100644
--- a/pkgs/by-name/va/vale-ls/package.nix
+++ b/pkgs/by-name/va/vale-ls/package.nix
@@ -28,14 +28,14 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     SystemConfiguration
   ]);
 
   checkFlags = [
     # The following tests are reaching to the network.
     "--skip=vale::tests"
-  ] ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
     # This test does not account for the existence of aarch64-linux machines,
     # despite upstream shipping artifacts for that architecture
     "--skip=utils::tests::arch"
diff --git a/pkgs/by-name/va/valkey/package.nix b/pkgs/by-name/va/valkey/package.nix
index 1a97c09ebd29..d44232121660 100644
--- a/pkgs/by-name/va/valkey/package.nix
+++ b/pkgs/by-name/va/valkey/package.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optional withSystemd systemd
     ++ lib.optional tlsSupport openssl;
 
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/Makefile --replace-fail "-flto" ""
   '';
 
@@ -42,12 +42,12 @@ stdenv.mkDerivation (finalAttrs: {
 
   enableParallelBuilding = true;
 
-  hardeningEnable = lib.optionals (!stdenv.isDarwin) [ "pie" ];
+  hardeningEnable = lib.optionals (!stdenv.hostPlatform.isDarwin) [ "pie" ];
 
   env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.cc.isClang [ "-std=c11" ]);
 
   # darwin currently lacks a pure `pgrep` which is extensively used here
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   nativeCheckInputs = [ which tcl ps ] ++ lib.optionals stdenv.hostPlatform.isStatic [ getconf ];
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/by-name/va/vapoursynth/package.nix b/pkgs/by-name/va/vapoursynth/package.nix
index 278cf1e56778..7a40f1eba1c2 100644
--- a/pkgs/by-name/va/vapoursynth/package.nix
+++ b/pkgs/by-name/va/vapoursynth/package.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
         ]
       ))
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       ApplicationServices
     ];
@@ -93,7 +93,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin; # see https://github.com/NixOS/nixpkgs/pull/189446 for partial fix
+    broken = stdenv.hostPlatform.isDarwin; # see https://github.com/NixOS/nixpkgs/pull/189446 for partial fix
     description = "Video processing framework with the future in mind";
     homepage = "http://www.vapoursynth.com/";
     license = licenses.lgpl21;
diff --git a/pkgs/by-name/va/vatprism/package.nix b/pkgs/by-name/va/vatprism/package.nix
index c13e0b0cf082..bdc406091d00 100644
--- a/pkgs/by-name/va/vatprism/package.nix
+++ b/pkgs/by-name/va/vatprism/package.nix
@@ -60,7 +60,7 @@ maven.buildMavenPackage rec {
   ];
 
   mvnHash =
-    if (stdenv.isLinux && stdenv.isAarch64) then
+    if (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) then
       "sha256-x0nFt2C7dZqMdllI1+Io9SPBY2J/dVgBTVb9T24vFFI="
     else
       "sha256-9uyNCUqnMgpiwm2kz544pWNB/SkRpASm2Dln0e4yZos=";
diff --git a/pkgs/by-name/ve/vesktop/package.nix b/pkgs/by-name/ve/vesktop/package.nix
index 6d65fe99d89a..4979bd32bd80 100644
--- a/pkgs/by-name/ve/vesktop/package.nix
+++ b/pkgs/by-name/ve/vesktop/package.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation (finalAttrs: {
       nodejs
       pnpm_9.configHook
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       # vesktop uses venmic, which is a shipped as a prebuilt node module
       # and needs to be patched
       autoPatchelfHook
@@ -57,12 +57,12 @@ stdenv.mkDerivation (finalAttrs: {
       # https://github.com/NixOS/nixpkgs/issues/172583
       makeWrapper
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # on macos we don't need to expand variables, so we can use the faster binary wrapper
       makeBinaryWrapper
     ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     libpulseaudio
     pipewire
     stdenv.cc.cc.lib
@@ -81,12 +81,12 @@ stdenv.mkDerivation (finalAttrs: {
 
   # disable code signing on macos
   # https://github.com/electron-userland/electron-builder/blob/77f977435c99247d5db395895618b150f5006e8f/docs/code-signing.md#how-to-disable-code-signing-during-the-build-process-on-macos
-  postConfigure = lib.optionalString stdenv.isDarwin ''
+  postConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export CSC_IDENTITY_AUTO_DISCOVERY=false
   '';
 
   # electron builds must be writable on darwin
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     cp -r ${electron.dist}/Electron.app .
     chmod -R u+w Electron.app
   '';
@@ -98,13 +98,13 @@ stdenv.mkDerivation (finalAttrs: {
     pnpm exec electron-builder \
       --dir \
       -c.asarUnpack="**/*.node" \
-      -c.electronDist=${if stdenv.isDarwin then "." else electron.dist} \
+      -c.electronDist=${if stdenv.hostPlatform.isDarwin then "." else electron.dist} \
       -c.electronVersion=${electron.version}
 
     runHook postBuild
   '';
 
-  postBuild = lib.optionalString stdenv.isLinux ''
+  postBuild = lib.optionalString stdenv.hostPlatform.isLinux ''
     pushd build
     ${libicns}/bin/icns2png -x icon.icns
     popd
@@ -114,7 +114,7 @@ stdenv.mkDerivation (finalAttrs: {
     ''
       runHook preInstall
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       mkdir -p $out/opt/Vesktop
       cp -r dist/*unpacked/resources $out/opt/Vesktop/
 
@@ -123,7 +123,7 @@ stdenv.mkDerivation (finalAttrs: {
         install -Dm0644 $file $out/share/icons/hicolor/''${file_suffix//x32.png}/apps/vesktop.png
       done
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/{Applications,bin}
       mv dist/mac*/Vesktop.App $out/Applications
     ''
@@ -132,18 +132,18 @@ stdenv.mkDerivation (finalAttrs: {
     '';
 
   postFixup =
-    lib.optionalString stdenv.isLinux ''
+    lib.optionalString stdenv.hostPlatform.isLinux ''
       makeWrapper ${electron}/bin/electron $out/bin/vesktop \
         --add-flags $out/opt/Vesktop/resources/app.asar \
         ${lib.optionalString withTTS "--add-flags \"--enable-speech-dispatcher\""} \
         ${lib.optionalString withMiddleClickScroll "--add-flags \"--enable-blink-features=MiddleClickAutoscroll\""} \
         --add-flags "\''${NIXOS_OZONE_WL:+\''${WAYLAND_DISPLAY:+--ozone-platform-hint=auto --enable-features=WaylandWindowDecorations --enable-wayland-ime}}"
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       makeWrapper $out/Applications/Vesktop.app/Contents/MacOS/Vesktop $out/bin/vesktop
     '';
 
-  desktopItems = lib.optional stdenv.isLinux (makeDesktopItem {
+  desktopItems = lib.optional stdenv.hostPlatform.isLinux (makeDesktopItem {
     name = "vesktop";
     desktopName = "Vesktop";
     exec = "vesktop %U";
diff --git a/pkgs/by-name/vi/vieb/package.nix b/pkgs/by-name/vi/vieb/package.nix
index 6927cb3e24af..af524a450e4d 100644
--- a/pkgs/by-name/vi/vieb/package.nix
+++ b/pkgs/by-name/vi/vieb/package.nix
@@ -20,7 +20,7 @@ buildNpmPackage rec {
   dontNpmBuild = true;
   env.ELECTRON_SKIP_BINARY_DOWNLOAD = 1;
 
-  nativeBuildInputs = [ makeWrapper ] ++ lib.optional stdenv.isAarch64 python3;
+  nativeBuildInputs = [ makeWrapper ] ++ lib.optional stdenv.hostPlatform.isAarch64 python3;
 
   desktopItem = makeDesktopItem {
     name = "vieb";
diff --git a/pkgs/by-name/vi/vis/package.nix b/pkgs/by-name/vi/vis/package.nix
index f16f717e7dc8..7d37d022a86a 100644
--- a/pkgs/by-name/vi/vis/package.nix
+++ b/pkgs/by-name/vi/vis/package.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
     libtermkey
     luaEnv
     tre
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     acl
     libselinux
   ];
diff --git a/pkgs/by-name/vl/vlc-bin/package.nix b/pkgs/by-name/vl/vlc-bin/package.nix
index 275e768c7ea2..9e496883ccb8 100644
--- a/pkgs/by-name/vl/vlc-bin/package.nix
+++ b/pkgs/by-name/vl/vlc-bin/package.nix
@@ -4,9 +4,9 @@
 , stdenv
 , undmg
 , variant ?
-  if (stdenv.isDarwin && stdenv.isAarch64)
+  if (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)
   then "arm64"
-  else if (stdenv.isDarwin && stdenv.isx86_64)
+  else if (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64)
   then "intel64"
   else "universal" # not reachable by normal means
 }:
diff --git a/pkgs/by-name/vo/volk_2/package.nix b/pkgs/by-name/vo/volk_2/package.nix
index 447922865cbf..57b849fcc28b 100644
--- a/pkgs/by-name/vo/volk_2/package.nix
+++ b/pkgs/by-name/vo/volk_2/package.nix
@@ -37,13 +37,13 @@ stdenv.mkDerivation (finalAttrs: {
 
   cmakeFlags =
     [ (lib.cmakeBool "ENABLE_MODTOOL" enableModTool) ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
       # offset 14335 in1: -1.03372 in2: -1.03371 tolerance was: 1e-05
       # volk_32f_log2_32f: fail on arch neon
       "-DCMAKE_CTEST_ARGUMENTS=--exclude-regex;qa_volk_32f_log2_32f"
     ];
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     remove-references-to -t ${stdenv.cc} $(readlink -f $out/lib/libvolk.so)
   '';
 
diff --git a/pkgs/by-name/vs/vsce/package.nix b/pkgs/by-name/vs/vsce/package.nix
index 873b4e2c1af3..1ecf3d9204d6 100644
--- a/pkgs/by-name/vs/vsce/package.nix
+++ b/pkgs/by-name/vs/vsce/package.nix
@@ -30,7 +30,7 @@ buildNpmPackage rec {
   nativeBuildInputs = [ pkg-config python3 ];
 
   buildInputs = [ libsecret ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ AppKit Security ]);
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ AppKit Security ]);
 
   makeCacheWritable = true;
   npmFlags = [ "--legacy-peer-deps" ];
diff --git a/pkgs/by-name/vs/vscode-js-debug/package.nix b/pkgs/by-name/vs/vscode-js-debug/package.nix
index b16717bf5d52..bde7ae221517 100644
--- a/pkgs/by-name/vs/vscode-js-debug/package.nix
+++ b/pkgs/by-name/vs/vscode-js-debug/package.nix
@@ -30,11 +30,11 @@ buildNpmPackage rec {
   nativeBuildInputs = [
     pkg-config
     node-gyp
-  ] ++ lib.optionals stdenv.isDarwin [ xcbuild ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcbuild ];
 
   buildInputs =
-    lib.optionals (!stdenv.isDarwin) [ libsecret ]
-    ++ lib.optionals stdenv.isDarwin [
+    lib.optionals (!stdenv.hostPlatform.isDarwin) [ libsecret ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       Security
       AppKit
     ];
diff --git a/pkgs/by-name/vv/vvvvvv/package.nix b/pkgs/by-name/vv/vvvvvv/package.nix
index c4ed05616620..471a84eecb89 100644
--- a/pkgs/by-name/vv/vvvvvv/package.nix
+++ b/pkgs/by-name/vv/vvvvvv/package.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     physfs
     SDL2
     tinyxml-2
-  ] ++ lib.optionals stdenv.isDarwin [ Foundation IOKit ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Foundation IOKit ];
 
   cmakeDir = "../desktop_version";
 
diff --git a/pkgs/by-name/wa/wapm/package.nix b/pkgs/by-name/wa/wapm/package.nix
index 94d97dbfc285..420baa5baeb3 100644
--- a/pkgs/by-name/wa/wapm/package.nix
+++ b/pkgs/by-name/wa/wapm/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ perl ];
 
   buildInputs = [ libiconv openssl ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
 
   doCheck = false;
 
diff --git a/pkgs/by-name/wa/warp-terminal/package.nix b/pkgs/by-name/wa/warp-terminal/package.nix
index 71c23dc8f751..adb2b2614e82 100644
--- a/pkgs/by-name/wa/warp-terminal/package.nix
+++ b/pkgs/by-name/wa/warp-terminal/package.nix
@@ -109,6 +109,6 @@ meta = with lib; {
 };
 
 in
-if stdenvNoCC.isDarwin
+if stdenvNoCC.hostPlatform.isDarwin
 then darwin
 else linux
diff --git a/pkgs/by-name/wa/wash-cli/package.nix b/pkgs/by-name/wa/wash-cli/package.nix
index d5b3ebecf8cd..663273e54e4b 100644
--- a/pkgs/by-name/wa/wash-cli/package.nix
+++ b/pkgs/by-name/wa/wash-cli/package.nix
@@ -24,7 +24,7 @@ in rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.SystemConfiguration
       darwin.apple_sdk.frameworks.CoreServices
     ];
diff --git a/pkgs/by-name/wa/wasm-bindgen-cli/package.nix b/pkgs/by-name/wa/wasm-bindgen-cli/package.nix
index 517b2813478f..d9b997805440 100644
--- a/pkgs/by-name/wa/wasm-bindgen-cli/package.nix
+++ b/pkgs/by-name/wa/wasm-bindgen-cli/package.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       curl
       darwin.apple_sdk.frameworks.Security
     ];
diff --git a/pkgs/by-name/wa/wastebin/package.nix b/pkgs/by-name/wa/wastebin/package.nix
index cdc5feb24b80..f63429bff248 100644
--- a/pkgs/by-name/wa/wastebin/package.nix
+++ b/pkgs/by-name/wa/wastebin/package.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     sqlite
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/by-name/wa/waybar/package.nix b/pkgs/by-name/wa/waybar/package.nix
index fe8143c2eb49..e0eb7a76eda0 100644
--- a/pkgs/by-name/wa/waybar/package.nix
+++ b/pkgs/by-name/wa/waybar/package.nix
@@ -53,7 +53,7 @@
   inputSupport ? true,
   jackSupport ? true,
   mpdSupport ? true,
-  mprisSupport ? stdenv.isLinux,
+  mprisSupport ? stdenv.hostPlatform.isLinux,
   nlSupport ? true,
   pipewireSupport ? true,
   pulseSupport ? true,
@@ -158,7 +158,7 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optional upowerSupport upower
     ++ lib.optional wireplumberSupport wireplumber
     ++ lib.optional (cavaSupport || pipewireSupport) pipewire
-    ++ lib.optional (!stdenv.isLinux) libinotify-kqueue;
+    ++ lib.optional (!stdenv.hostPlatform.isLinux) libinotify-kqueue;
 
   nativeCheckInputs = [ catch2_3 ];
   doCheck = runTests;
diff --git a/pkgs/by-name/we/weaver/package.nix b/pkgs/by-name/we/weaver/package.nix
index 22b5c9ef93a8..7734b0d6f585 100644
--- a/pkgs/by-name/we/weaver/package.nix
+++ b/pkgs/by-name/we/weaver/package.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-4rHDulSsFvKly5M5bo1AtEAl280N/hxhznTngCxw36Y=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk_11_0.frameworks; [ SystemConfiguration ]
   );
 
diff --git a/pkgs/by-name/we/werf/package.nix b/pkgs/by-name/we/werf/package.nix
index aa914fdd8f7a..9f55f565d525 100644
--- a/pkgs/by-name/we/werf/package.nix
+++ b/pkgs/by-name/we/werf/package.nix
@@ -29,10 +29,10 @@ buildGoModule rec {
   nativeBuildInputs = [ installShellFiles ];
 
   buildInputs =
-    lib.optionals stdenv.isLinux [ btrfs-progs ]
+    lib.optionals stdenv.hostPlatform.isLinux [ btrfs-progs ]
     ++ lib.optionals stdenv.hostPlatform.isGnu [ stdenv.cc.libc.static ];
 
-  CGO_ENABLED = if stdenv.isLinux then 1 else 0;
+  CGO_ENABLED = if stdenv.hostPlatform.isLinux then 1 else 0;
 
   ldflags =
     [
diff --git a/pkgs/by-name/wi/wiliwili/package.nix b/pkgs/by-name/wi/wiliwili/package.nix
index 302b47b65b4e..85cc143f45f6 100644
--- a/pkgs/by-name/wi/wiliwili/package.nix
+++ b/pkgs/by-name/wi/wiliwili/package.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [
     cmake
     pkg-config
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     wayland-scanner
   ];
 
@@ -41,7 +41,7 @@ stdenv.mkDerivation (finalAttrs: {
     curl
     libxkbcommon
     dbus
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libffi # needed for wayland
     wayland
     egl-wayland
@@ -55,8 +55,8 @@ stdenv.mkDerivation (finalAttrs: {
   cmakeFlags = [
     (lib.cmakeBool "PLATFORM_DESKTOP" true)
     (lib.cmakeBool "INSTALL" true)
-    (lib.cmakeBool "GLFW_BUILD_WAYLAND" stdenv.isLinux)
-    (lib.cmakeBool "GLFW_BUILD_X11" stdenv.isLinux)
+    (lib.cmakeBool "GLFW_BUILD_WAYLAND" stdenv.hostPlatform.isLinux)
+    (lib.cmakeBool "GLFW_BUILD_X11" stdenv.hostPlatform.isLinux)
     # Otherwise cpr cmake will try to download zlib
     (lib.cmakeBool "CPR_FORCE_USE_SYSTEM_CURL" true)
   ];
diff --git a/pkgs/by-name/wi/wiper/package.nix b/pkgs/by-name/wi/wiper/package.nix
index 3eb069de236a..1540bbda4bc4 100644
--- a/pkgs/by-name/wi/wiper/package.nix
+++ b/pkgs/by-name/wi/wiper/package.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage {
 
   cargoHash = "sha256-gYWTv0AXOmpx9Nc8akBMVWkESI0AtnGgvfH9hQZ0peo=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Foundation ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Foundation ];
 
   meta = {
     description = "Disk analyser and cleanup tool";
diff --git a/pkgs/by-name/wl/wl-clip-persist/package.nix b/pkgs/by-name/wl/wl-clip-persist/package.nix
index 3b31f14f8c20..cfa8eced287f 100644
--- a/pkgs/by-name/wl/wl-clip-persist/package.nix
+++ b/pkgs/by-name/wl/wl-clip-persist/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [ wayland ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Keep Wayland clipboard even after programs close";
     homepage = "https://github.com/Linus789/wl-clip-persist";
     inherit (wayland.meta) platforms;
diff --git a/pkgs/by-name/wl/wlx-overlay-s/package.nix b/pkgs/by-name/wl/wlx-overlay-s/package.nix
index c5fa7e2ffcb9..36d6ca6fa11d 100644
--- a/pkgs/by-name/wl/wlx-overlay-s/package.nix
+++ b/pkgs/by-name/wl/wlx-overlay-s/package.nix
@@ -98,7 +98,7 @@ rustPlatform.buildRustPackage rec {
     license = lib.licenses.gpl3Only;
     maintainers = with lib.maintainers; [ Scrumplex ];
     platforms = lib.platforms.linux;
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
     mainProgram = "wlx-overlay-s";
   };
 }
diff --git a/pkgs/by-name/ws/wslay/package.nix b/pkgs/by-name/ws/wslay/package.nix
index 45054f8130f1..85f3294ebabe 100644
--- a/pkgs/by-name/ws/wslay/package.nix
+++ b/pkgs/by-name/ws/wslay/package.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
 
   checkInputs = [ cunit ];
 
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export DYLD_LIBRARY_PATH=$(pwd)/lib/.libs
   '';
 
diff --git a/pkgs/by-name/wt/wttrbar/package.nix b/pkgs/by-name/wt/wttrbar/package.nix
index b844b826a932..0110caec8e50 100644
--- a/pkgs/by-name/wt/wttrbar/package.nix
+++ b/pkgs/by-name/wt/wttrbar/package.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-fuLKWooXn966RORH20D9wwbjNtyLEZOO8Y8RcjsFwqM=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk_11_0.frameworks; [ Security SystemConfiguration ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk_11_0.frameworks; [ Security SystemConfiguration ]);
 
   cargoHash = "sha256-Of1tHKIL2XbzA6YFxtvaP9sa+KMw8uJTFG0n84g2Eog=";
 
diff --git a/pkgs/by-name/wt/wtwitch/package.nix b/pkgs/by-name/wt/wtwitch/package.nix
index 0035e184540c..73bfe1c3fd62 100644
--- a/pkgs/by-name/wt/wtwitch/package.nix
+++ b/pkgs/by-name/wt/wtwitch/package.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
     install -Dm755 src/wtwitch $out/bin/wtwitch
     wrapProgram $out/bin/wtwitch \
       --set-default LANG en_US.UTF-8 \
-      --prefix PATH : ${lib.makeBinPath (lib.optionals stdenv.isLinux [ vlc ] ++ [
+      --prefix PATH : ${lib.makeBinPath (lib.optionals stdenv.hostPlatform.isLinux [ vlc ] ++ [
         bash
         coreutils-prefixed
         curl
diff --git a/pkgs/by-name/x1/x16/package.nix b/pkgs/by-name/x1/x16/package.nix
index b6f8926a4d1c..26a12e480e7f 100644
--- a/pkgs/by-name/x1/x16/package.nix
+++ b/pkgs/by-name/x1/x16/package.nix
@@ -57,6 +57,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with lib.maintainers; [ AndersonTorres ];
     mainProgram = "x16emu";
     inherit (SDL2.meta) platforms;
-    broken = stdenv.isAarch64; # ofborg fails to compile it
+    broken = stdenv.hostPlatform.isAarch64; # ofborg fails to compile it
   };
 })
diff --git a/pkgs/by-name/x1/x16/rom.nix b/pkgs/by-name/x1/x16/rom.nix
index 989e81094159..ed85dd5108ac 100644
--- a/pkgs/by-name/x1/x16/rom.nix
+++ b/pkgs/by-name/x1/x16/rom.nix
@@ -54,6 +54,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = lib.licenses.bsd2;
     maintainers = with lib.maintainers; [ AndersonTorres ];
     inherit (cc65.meta) platforms;
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 })
diff --git a/pkgs/by-name/xd/xdg-user-dirs/package.nix b/pkgs/by-name/xd/xdg-user-dirs/package.nix
index 5d141eb8049c..98d95290ca1e 100644
--- a/pkgs/by-name/xd/xdg-user-dirs/package.nix
+++ b/pkgs/by-name/xd/xdg-user-dirs/package.nix
@@ -18,13 +18,13 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-7G8G10lc26N6cyA5+bXhV4vLKWV2/eDaQO2y9SIg3zw=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   nativeBuildInputs = [
     makeWrapper
     libxslt
     docbook_xsl
-  ] ++ lib.optionals stdenv.isDarwin [ gettext ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ gettext ];
 
   preFixup = ''
     # fallback values need to be last
diff --git a/pkgs/by-name/xe/xevd/package.nix b/pkgs/by-name/xe/xevd/package.nix
index d5ba1995bb14..fc5c80e31bbb 100644
--- a/pkgs/by-name/xe/xevd/package.nix
+++ b/pkgs/by-name/xe/xevd/package.nix
@@ -99,6 +99,6 @@ stdenv.mkDerivation (finalAttrs: {
     pkgConfigModules = [ "xevd" ];
     maintainers = with lib.maintainers; [ jopejoe1 ];
     platforms = lib.platforms.all;
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 })
diff --git a/pkgs/by-name/xe/xeve/package.nix b/pkgs/by-name/xe/xeve/package.nix
index f8acbee0acc0..2f9f2b029d21 100644
--- a/pkgs/by-name/xe/xeve/package.nix
+++ b/pkgs/by-name/xe/xeve/package.nix
@@ -102,6 +102,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "xeve_app";
     maintainers = with lib.maintainers; [ jopejoe1 ];
     platforms = lib.platforms.all;
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 })
diff --git a/pkgs/by-name/xi/xiu/package.nix b/pkgs/by-name/xi/xiu/package.nix
index 30b692690124..fe5ab564e9f7 100644
--- a/pkgs/by-name/xi/xiu/package.nix
+++ b/pkgs/by-name/xi/xiu/package.nix
@@ -29,9 +29,9 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     libopus
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/by-name/xm/xml-tooling-c/package.nix b/pkgs/by-name/xm/xml-tooling-c/package.nix
index 921175c3e879..709bfee14bb4 100644
--- a/pkgs/by-name/xm/xml-tooling-c/package.nix
+++ b/pkgs/by-name/xm/xml-tooling-c/package.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     pkg-config
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (!stdenv.isDarwin) "-std=c++14";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (!stdenv.hostPlatform.isDarwin) "-std=c++14";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/by-name/xp/xplr/package.nix b/pkgs/by-name/xp/xplr/package.nix
index 0bdfdfbc8a2c..b75adabdfdc7 100644
--- a/pkgs/by-name/xp/xplr/package.nix
+++ b/pkgs/by-name/xp/xplr/package.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-RZgdWhVBZozYxbbNslCBLhN6EnogpyVXvht6GbzLnPs=";
 
   # fixes `thread 'main' panicked at 'cannot find strip'` on x86_64-darwin
-  env = lib.optionalAttrs (stdenv.isx86_64 && stdenv.isDarwin) {
+  env = lib.optionalAttrs (stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.isDarwin) {
     TARGET_STRIP = "${stdenv.cc.targetPrefix}strip";
   };
 
diff --git a/pkgs/by-name/xs/xsimd/package.nix b/pkgs/by-name/xs/xsimd/package.nix
index 8f8c72bc3f6a..622f11f400bc 100644
--- a/pkgs/by-name/xs/xsimd/package.nix
+++ b/pkgs/by-name/xs/xsimd/package.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation (finalAttrs: {
       url = "https://github.com/xtensor-stack/xsimd/commit/c8a87ed6e04b6782f48f94713adfb0cad6c11ddf.patch";
       hash = "sha256-2/FvBGdqTPcayD7rdHPSzL+F8IYKAfMW0WBJ0cW9EZ0=";
     })
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # https://github.com/xtensor-stack/xsimd/issues/1030
     ./disable-test_error_gamma.patch
   ];
diff --git a/pkgs/by-name/ya/yabai/package.nix b/pkgs/by-name/ya/yabai/package.nix
index 9cc32a64fff7..863b3b4fafad 100644
--- a/pkgs/by-name/ya/yabai/package.nix
+++ b/pkgs/by-name/ya/yabai/package.nix
@@ -23,7 +23,7 @@ let
     SkyLight
     ;
 
-  stdenv' = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
 in
 stdenv'.mkDerivation (finalAttrs: {
   pname = "yabai";
@@ -40,12 +40,12 @@ stdenv'.mkDerivation (finalAttrs: {
 
   nativeBuildInputs =
     [ installShellFiles ]
-    ++ lib.optionals stdenv.isx86_64 [
+    ++ lib.optionals stdenv.hostPlatform.isx86_64 [
       xcodebuild
       xxd
     ];
 
-  buildInputs = lib.optionals stdenv.isx86_64 [
+  buildInputs = lib.optionals stdenv.hostPlatform.isx86_64 [
     Carbon
     Cocoa
     ScriptingBridge
@@ -53,7 +53,7 @@ stdenv'.mkDerivation (finalAttrs: {
   ];
 
   dontConfigure = true;
-  dontBuild = stdenv.isAarch64;
+  dontBuild = stdenv.hostPlatform.isAarch64;
   enableParallelBuilding = true;
 
   installPhase = ''
@@ -62,14 +62,14 @@ stdenv'.mkDerivation (finalAttrs: {
     mkdir -p $out/{bin,share/icons/hicolor/scalable/apps}
 
     cp ./bin/yabai $out/bin/yabai
-    ${lib.optionalString stdenv.isx86_64 "cp ./assets/icon/icon.svg $out/share/icons/hicolor/scalable/apps/yabai.svg"}
+    ${lib.optionalString stdenv.hostPlatform.isx86_64 "cp ./assets/icon/icon.svg $out/share/icons/hicolor/scalable/apps/yabai.svg"}
     installManPage ./doc/yabai.1
 
     runHook postInstall
   '';
 
   postPatch =
-    lib.optionalString stdenv.isx86_64 # bash
+    lib.optionalString stdenv.hostPlatform.isx86_64 # bash
       ''
         # aarch64 code is compiled on all targets, which causes our Apple SDK headers to error out.
         # Since multilib doesn't work on darwin i dont know of a better way of handling this.
@@ -146,6 +146,6 @@ stdenv'.mkDerivation (finalAttrs: {
     ];
     sourceProvenance =
       with lib.sourceTypes;
-      lib.optionals stdenv.isx86_64 [ fromSource ] ++ lib.optionals stdenv.isAarch64 [ binaryNativeCode ];
+      lib.optionals stdenv.hostPlatform.isx86_64 [ fromSource ] ++ lib.optionals stdenv.hostPlatform.isAarch64 [ binaryNativeCode ];
   };
 })
diff --git a/pkgs/by-name/ya/yapesdl/package.nix b/pkgs/by-name/ya/yapesdl/package.nix
index 44bb2a0dbaf8..9b974c3eebe2 100644
--- a/pkgs/by-name/ya/yapesdl/package.nix
+++ b/pkgs/by-name/ya/yapesdl/package.nix
@@ -47,6 +47,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "yapesdl";
     maintainers = with lib.maintainers; [ AndersonTorres ];
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/by-name/ya/yazi-unwrapped/package.nix b/pkgs/by-name/ya/yazi-unwrapped/package.nix
index 3245be8f3144..561eea7fdb0d 100644
--- a/pkgs/by-name/ya/yazi-unwrapped/package.nix
+++ b/pkgs/by-name/ya/yazi-unwrapped/package.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
   env.VERGEN_BUILD_DATE = "2024-09-04";
 
   nativeBuildInputs = [ installShellFiles ];
-  buildInputs = [ rust-jemalloc-sys ] ++ lib.optionals stdenv.isDarwin [ Foundation ];
+  buildInputs = [ rust-jemalloc-sys ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Foundation ];
 
   postInstall = ''
     installShellCompletion --cmd yazi \
diff --git a/pkgs/by-name/yc/ycmd/package.nix b/pkgs/by-name/yc/ycmd/package.nix
index 325a8d95e6bc..56a384df64f5 100644
--- a/pkgs/by-name/yc/ycmd/package.nix
+++ b/pkgs/by-name/yc/ycmd/package.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation {
     ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
   buildInputs = with python.pkgs; with llvmPackages; [ abseil-cpp boost libllvm.all libclang.all ]
     ++ [ jedi jedi-language-server pybind11 ]
-    ++ lib.optional stdenv.isDarwin Cocoa;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 
   buildPhase = ''
     export EXTRA_CMAKE_ARGS="-DPATH_TO_LLVM_ROOT=${llvmPackages.libllvm} -DUSE_SYSTEM_ABSEIL=true"
diff --git a/pkgs/by-name/ye/yesplaymusic/package.nix b/pkgs/by-name/ye/yesplaymusic/package.nix
index 9a20e9ecf312..077ba8775879 100644
--- a/pkgs/by-name/ye/yesplaymusic/package.nix
+++ b/pkgs/by-name/ye/yesplaymusic/package.nix
@@ -74,7 +74,7 @@ let
     platforms = builtins.attrNames srcs;
   };
 in
-if stdenv.isDarwin
+if stdenv.hostPlatform.isDarwin
 then stdenv.mkDerivation {
   inherit pname version src meta;
 
diff --git a/pkgs/by-name/yt/ytui-music/package.nix b/pkgs/by-name/yt/ytui-music/package.nix
index 3c460082b27e..0e520955e057 100644
--- a/pkgs/by-name/yt/ytui-music/package.nix
+++ b/pkgs/by-name/yt/ytui-music/package.nix
@@ -38,7 +38,7 @@ rustPlatform.buildRustPackage rec {
     openssl
     sqlite
     mpv
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/by-name/yu/yubico-piv-tool/package.nix b/pkgs/by-name/yu/yubico-piv-tool/package.nix
index ba0476862841..69665583f2e4 100644
--- a/pkgs/by-name/yu/yubico-piv-tool/package.nix
+++ b/pkgs/by-name/yu/yubico-piv-tool/package.nix
@@ -13,7 +13,7 @@
   stdenv,
   testers,
   zlib,
-  withApplePCSC ? stdenv.isDarwin,
+  withApplePCSC ? stdenv.hostPlatform.isDarwin,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
diff --git a/pkgs/by-name/za/zapret/package.nix b/pkgs/by-name/za/zapret/package.nix
index 658d525bf36f..4cb0f099e08f 100644
--- a/pkgs/by-name/za/zapret/package.nix
+++ b/pkgs/by-name/za/zapret/package.nix
@@ -77,6 +77,6 @@ stdenv.mkDerivation {
     mainProgram = "zapret";
 
     # probably gonna work on darwin, but untested
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/zc/zchunk/package.nix b/pkgs/by-name/zc/zchunk/package.nix
index 0e7df32c08a9..e0450116f5b9 100644
--- a/pkgs/by-name/zc/zchunk/package.nix
+++ b/pkgs/by-name/zc/zchunk/package.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     curl
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [ argp-standalone ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ argp-standalone ];
 
   outputs = [
     "out"
diff --git a/pkgs/by-name/ze/zed-editor/package.nix b/pkgs/by-name/ze/zed-editor/package.nix
index 2088a1ac98f5..9ee49b8ef6e2 100644
--- a/pkgs/by-name/ze/zed-editor/package.nix
+++ b/pkgs/by-name/ze/zed-editor/package.nix
@@ -35,7 +35,7 @@
   withGLES ? false,
 }:
 
-assert withGLES -> stdenv.isLinux;
+assert withGLES -> stdenv.hostPlatform.isLinux;
 
 let
   executableName = "zeditor";
@@ -130,7 +130,7 @@ rustPlatform.buildRustPackage rec {
     protobuf
     rustPlatform.bindgenHook
     cargo-about
-  ] ++ lib.optionals stdenv.isDarwin [ xcbuild.xcrun ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcbuild.xcrun ];
 
   buildInputs =
     [
@@ -143,13 +143,13 @@ rustPlatform.buildRustPackage rec {
       zlib
       zstd
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       alsa-lib
       libxkbcommon
       wayland
       xorg.libxcb
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         AppKit
@@ -196,7 +196,7 @@ rustPlatform.buildRustPackage rec {
     bash script/generate-licenses
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --add-rpath ${gpu-lib}/lib $out/libexec/*
     patchelf --add-rpath ${wayland}/lib $out/libexec/*
   '';
@@ -265,6 +265,6 @@ rustPlatform.buildRustPackage rec {
     mainProgram = "zeditor";
     platforms = lib.platforms.all;
     # Currently broken on darwin: https://github.com/NixOS/nixpkgs/pull/303233#issuecomment-2048650618
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/by-name/ze/zerotierone/package.nix b/pkgs/by-name/ze/zerotierone/package.nix
index eb09f58e888a..728ec4ee3c37 100644
--- a/pkgs/by-name/ze/zerotierone/package.nix
+++ b/pkgs/by-name/ze/zerotierone/package.nix
@@ -77,7 +77,7 @@ in stdenv.mkDerivation {
     lzo
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     darwin.apple_sdk.frameworks.SystemConfiguration
     darwin.apple_sdk.frameworks.CoreServices
@@ -88,7 +88,7 @@ in stdenv.mkDerivation {
   # Ensure Rust compiles for the right target
   env.CARGO_BUILD_TARGET = stdenv.hostPlatform.rust.rustcTarget;
 
-  preBuild = if stdenv.isDarwin then ''
+  preBuild = if stdenv.hostPlatform.isDarwin then ''
     makeFlagsArray+=("ARCH_FLAGS=") # disable multi-arch build
     if ! grep -q MACOS_VERSION_MIN=10.13 make-mac.mk; then
       echo "You may need to update MACOSX_DEPLOYMENT_TARGET to match the value in make-mac.mk"
diff --git a/pkgs/by-name/zo/zola/package.nix b/pkgs/by-name/zo/zola/package.nix
index e6fc773a2127..5f658eed3960 100644
--- a/pkgs/by-name/zo/zola/package.nix
+++ b/pkgs/by-name/zo/zola/package.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     oniguruma
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     CoreServices SystemConfiguration
   ]);
 
diff --git a/pkgs/by-name/zo/zoom-us/package.nix b/pkgs/by-name/zo/zoom-us/package.nix
index 230825c93564..e64b20fce6d3 100644
--- a/pkgs/by-name/zo/zoom-us/package.nix
+++ b/pkgs/by-name/zo/zoom-us/package.nix
@@ -119,8 +119,8 @@ stdenv.mkDerivation rec {
 
   src = srcs.${system} or throwSystem;
 
-  dontUnpack = stdenv.isLinux;
-  unpackPhase = lib.optionalString stdenv.isDarwin ''
+  dontUnpack = stdenv.hostPlatform.isLinux;
+  unpackPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     xar -xf $src
     zcat < zoomus.pkg/Payload | cpio -i
   '';
@@ -128,7 +128,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     makeWrapper
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     xar
     cpio
   ];
@@ -151,9 +151,9 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  postFixup =  lib.optionalString stdenv.isDarwin ''
+  postFixup =  lib.optionalString stdenv.hostPlatform.isDarwin ''
     makeWrapper $out/Applications/zoom.us.app/Contents/MacOS/zoom.us $out/bin/zoom
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     # Desktop File
     substituteInPlace $out/share/applications/Zoom.desktop \
         --replace-fail "Exec=/usr/bin/zoom" "Exec=$out/bin/zoom"
diff --git a/pkgs/by-name/zu/zutty/package.nix b/pkgs/by-name/zu/zutty/package.nix
index 4a931a1c4eb0..bca3a376467f 100644
--- a/pkgs/by-name/zu/zutty/package.nix
+++ b/pkgs/by-name/zu/zutty/package.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   passthru = {
-    tests = lib.optionalAttrs stdenv.isLinux { default = nixosTests.terminal-emulators.zutty; };
+    tests = lib.optionalAttrs stdenv.hostPlatform.isLinux { default = nixosTests.terminal-emulators.zutty; };
   };
 
   meta = {
diff --git a/pkgs/data/fonts/iosevka/default.nix b/pkgs/data/fonts/iosevka/default.nix
index d563ff2ee344..7f7979c5bec5 100644
--- a/pkgs/data/fonts/iosevka/default.nix
+++ b/pkgs/data/fonts/iosevka/default.nix
@@ -69,7 +69,7 @@ buildNpmPackage rec {
   nativeBuildInputs = [
     remarshal
     ttfautohint-nox
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # libtool
     cctools
   ];
diff --git a/pkgs/data/fonts/uni-vga/default.nix b/pkgs/data/fonts/uni-vga/default.nix
index 1239b1238831..5be5a817b857 100644
--- a/pkgs/data/fonts/uni-vga/default.nix
+++ b/pkgs/data/fonts/uni-vga/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
   nativeBuildInputs =
     [ bdftopcf libfaketime
       xorg.fonttosfnt xorg.mkfontscale
-    ] ++ lib.optionals stdenv.isLinux [ perl kbd ];
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [ perl kbd ];
 
   postPatch = "patchShebangs .";
 
@@ -24,7 +24,7 @@ stdenv.mkDerivation {
     # convert bdf font to otb
     faketime -f "1970-01-01 00:00:01" \
     fonttosfnt -v -o u_vga16.otb u_vga16.bdf
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     # convert font to compressed psf
     ./bdf2psf.pl -s UniCyrX.sfm u_vga16.bdf \
       | psfaddtable - UniCyrX.sfm - \
@@ -40,7 +40,7 @@ stdenv.mkDerivation {
     install -m 644 -D *.bdf -t "$bdf/share/fonts"
     mkfontdir "$bdf/share/fonts"
 
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     # install psf (for linux virtual terminal)
     install -m 644 -D *.psf.gz -t "$out/share/consolefonts"
   '';
diff --git a/pkgs/data/icons/gnome-icon-theme/default.nix b/pkgs/data/icons/gnome-icon-theme/default.nix
index 44b92c465bbe..22289b73c466 100644
--- a/pkgs/data/icons/gnome-icon-theme/default.nix
+++ b/pkgs/data/icons/gnome-icon-theme/default.nix
@@ -34,6 +34,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Plus;
     platforms = platforms.unix;
     maintainers = [ maintainers.romildo ];
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/gnome-icon-theme.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/gnome-icon-theme.x86_64-darwin
   };
 }
diff --git a/pkgs/data/icons/volantes-cursors/default.nix b/pkgs/data/icons/volantes-cursors/default.nix
index 0e0871a00038..d76a0eda4cf0 100644
--- a/pkgs/data/icons/volantes-cursors/default.nix
+++ b/pkgs/data/icons/volantes-cursors/default.nix
@@ -28,6 +28,6 @@ stdenv.mkDerivation {
     license = licenses.gpl2;
     maintainers = with maintainers; [ jordanisaacs ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin && stdenv.isAarch64; # build timeout
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64; # build timeout
   };
 }
diff --git a/pkgs/data/misc/scowl/default.nix b/pkgs/data/misc/scowl/default.nix
index 4bfe201beb48..53988a728de3 100644
--- a/pkgs/data/misc/scowl/default.nix
+++ b/pkgs/data/misc/scowl/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   '';
 
   nativeBuildInputs = [ unzip zip perl aspell dos2unix ];
-  buildInputs = lib.optional (!stdenv.isLinux) libiconv;
+  buildInputs = lib.optional (!stdenv.hostPlatform.isLinux) libiconv;
 
   env.NIX_CFLAGS_COMPILE = "-Wno-narrowing";
 
diff --git a/pkgs/data/themes/adwaita-qt/default.nix b/pkgs/data/themes/adwaita-qt/default.nix
index 7a7f151c382b..90069dc48c35 100644
--- a/pkgs/data/themes/adwaita-qt/default.nix
+++ b/pkgs/data/themes/adwaita-qt/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     qtbase
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     xorg.libxcb
   ] ++ lib.optionals (!useQt6) [
     qt5.qtx11extras
diff --git a/pkgs/desktops/enlightenment/enlightenment/default.nix b/pkgs/desktops/enlightenment/enlightenment/default.nix
index 25faa26687ae..198dae282dfa 100644
--- a/pkgs/desktops/enlightenment/enlightenment/default.nix
+++ b/pkgs/desktops/enlightenment/enlightenment/default.nix
@@ -16,7 +16,7 @@
 , udisks2
 , waylandSupport ? false, wayland-protocols, xwayland
 , bluetoothSupport ? true, bluez5
-, pulseSupport ? !stdenv.isDarwin, libpulseaudio
+, pulseSupport ? !stdenv.hostPlatform.isDarwin, libpulseaudio
 , directoryListingUpdater
 }:
 
diff --git a/pkgs/desktops/gnome-2/default.nix b/pkgs/desktops/gnome-2/default.nix
index 3f8d7c634096..67af761d3a38 100644
--- a/pkgs/desktops/gnome-2/default.nix
+++ b/pkgs/desktops/gnome-2/default.nix
@@ -5,7 +5,7 @@ lib.makeScope pkgs.newScope (self: with self; {
 #### PLATFORM
 
   libIDL = callPackage ./platform/libIDL {
-    gettext = if stdenv.isDarwin then pkgs.gettext else null;
+    gettext = if stdenv.hostPlatform.isDarwin then pkgs.gettext else null;
   };
 
   ORBit2 = callPackage ./platform/ORBit2 { };
diff --git a/pkgs/desktops/gnome-2/desktop/gtksourceview/default.nix b/pkgs/desktops/gnome-2/desktop/gtksourceview/default.nix
index 902178d16706..94c3d49a97e0 100644
--- a/pkgs/desktops/gnome-2/desktop/gtksourceview/default.nix
+++ b/pkgs/desktops/gnome-2/desktop/gtksourceview/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation (finalAttrs: {
     sha256 = "c585773743b1df8a04b1be7f7d90eecdf22681490d6810be54c81a7ae152191e";
   };
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     (fetchpatch {
       name = "change-igemacintegration-to-gtkosxapplication.patch";
       url = "https://gitlab.gnome.org/GNOME/gtksourceview/commit/e88357c5f210a8796104505c090fb6a04c213902.patch";
@@ -28,16 +28,16 @@ stdenv.mkDerivation (finalAttrs: {
     })
   ];
 
-  nativeBuildInputs = [ pkg-config intltool ] ++ lib.optionals stdenv.isDarwin [ autoreconfHook ];
+  nativeBuildInputs = [ pkg-config intltool ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ autoreconfHook ];
   buildInputs = [
     atk cairo glib gtk2
     pango libxml2Python perl
     gettext
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     gnome-common gtk-mac-integration-gtk2
   ];
 
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     intltoolize --force
   '';
 
diff --git a/pkgs/desktops/gnome-2/platform/GConf/default.nix b/pkgs/desktops/gnome-2/platform/GConf/default.nix
index 33430f453ab5..ea6730f88e2e 100644
--- a/pkgs/desktops/gnome-2/platform/GConf/default.nix
+++ b/pkgs/desktops/gnome-2/platform/GConf/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ ORBit2 libxml2 ]
     # polkit requires pam, which requires shadow.h, which is not available on
     # darwin
-    ++ lib.optional (!stdenv.isDarwin) polkit;
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) polkit;
 
   propagatedBuildInputs = [ glib dbus-glib ];
 
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   configureFlags =
     # fixes the "libgconfbackend-oldxml.so is not portable" error on darwin
-    lib.optionals stdenv.isDarwin [ "--enable-static" ];
+    lib.optionals stdenv.hostPlatform.isDarwin [ "--enable-static" ];
 
   postPatch = ''
     2to3 --write --nobackup gsettings/gsettings-schema-convert
diff --git a/pkgs/desktops/gnustep/libobjc2/default.nix b/pkgs/desktops/gnustep/libobjc2/default.nix
index ce83250fe678..ccbbdec13ac0 100644
--- a/pkgs/desktops/gnustep/libobjc2/default.nix
+++ b/pkgs/desktops/gnustep/libobjc2/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation (finalAttrs: {
   cmakeFlags = [ "-DCMAKE_INSTALL_LIBDIR=lib" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Objective-C runtime for use with GNUstep";
     homepage = "https://gnustep.github.io/";
     license = licenses.mit;
diff --git a/pkgs/desktops/lxqt/compton-conf/default.nix b/pkgs/desktops/lxqt/compton-conf/default.nix
index be6d593b4177..2403975b481b 100644
--- a/pkgs/desktops/lxqt/compton-conf/default.nix
+++ b/pkgs/desktops/lxqt/compton-conf/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
   passthru.updateScript = gitUpdater { };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/lxqt/compton-conf";
     description = "GUI configuration tool for compton X composite manager";
     mainProgram = "compton-conf";
diff --git a/pkgs/desktops/lxqt/libdbusmenu-lxqt/default.nix b/pkgs/desktops/lxqt/libdbusmenu-lxqt/default.nix
index 9a49c10a1be9..62504bb33b54 100644
--- a/pkgs/desktops/lxqt/libdbusmenu-lxqt/default.nix
+++ b/pkgs/desktops/lxqt/libdbusmenu-lxqt/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   passthru.updateScript = gitUpdater { };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Qt implementation of the DBusMenu protocol";
     homepage = "https://github.com/lxqt/libdbusmenu-lxqt";
     license = licenses.lgpl21Plus;
diff --git a/pkgs/desktops/lxqt/libsysstat/default.nix b/pkgs/desktops/lxqt/libsysstat/default.nix
index 6f809629eaaa..daaad022edf5 100644
--- a/pkgs/desktops/lxqt/libsysstat/default.nix
+++ b/pkgs/desktops/lxqt/libsysstat/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   passthru.updateScript = gitUpdater { };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Library used to query system info and statistics";
     homepage = "https://github.com/lxqt/libsysstat";
     license = licenses.lgpl21Plus;
diff --git a/pkgs/desktops/lxqt/qtermwidget/default.nix b/pkgs/desktops/lxqt/qtermwidget/default.nix
index 51b9cef886ae..30fe20ebeefe 100644
--- a/pkgs/desktops/lxqt/qtermwidget/default.nix
+++ b/pkgs/desktops/lxqt/qtermwidget/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
   passthru.updateScript = gitUpdater { };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/lxqt/qtermwidget";
     description = "Terminal emulator widget for Qt, used by QTerminal";
     license = licenses.gpl2Plus;
diff --git a/pkgs/desktops/mate/libmatemixer/default.nix b/pkgs/desktops/mate/libmatemixer/default.nix
index ebdd3eb07dda..25b99584429f 100644
--- a/pkgs/desktops/mate/libmatemixer/default.nix
+++ b/pkgs/desktops/mate/libmatemixer/default.nix
@@ -5,7 +5,7 @@
 , pkg-config
 , gettext
 , glib
-, alsaSupport ? stdenv.isLinux
+, alsaSupport ? stdenv.hostPlatform.isLinux
 , alsa-lib
 , udev
 , pulseaudioSupport ? config.pulseaudio or true
diff --git a/pkgs/desktops/mate/mate-menus/default.nix b/pkgs/desktops/mate/mate-menus/default.nix
index 9328147e642c..31854538fb5e 100644
--- a/pkgs/desktops/mate/mate-menus/default.nix
+++ b/pkgs/desktops/mate/mate-menus/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
   passthru.updateScript = mateUpdateScript { inherit pname; };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Menu system for MATE";
     homepage = "https://github.com/mate-desktop/mate-menus";
     license = with licenses; [ gpl2Plus lgpl2Plus ];
diff --git a/pkgs/development/ada-modules/gnatcoll/bindings.nix b/pkgs/development/ada-modules/gnatcoll/bindings.nix
index 0b7efb60deb9..32d490c1e1ba 100644
--- a/pkgs/development/ada-modules/gnatcoll/bindings.nix
+++ b/pkgs/development/ada-modules/gnatcoll/bindings.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
     python3
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
   ];
 
diff --git a/pkgs/development/ada-modules/gprbuild/default.nix b/pkgs/development/ada-modules/gprbuild/default.nix
index f1cf28f00af3..3965789d742e 100644
--- a/pkgs/development/ada-modules/gprbuild/default.nix
+++ b/pkgs/development/ada-modules/gprbuild/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation {
     "LIBRARY_TYPE=relocatable"
   ];
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     # Ensure that there is enough space for the `fixDarwinDylibNames` hook to
     # update the install names of the output dylibs.
     NIX_LDFLAGS = "-headerpad_max_install_names";
diff --git a/pkgs/development/beam-modules/erlang-ls/default.nix b/pkgs/development/beam-modules/erlang-ls/default.nix
index a2ea7c8bd449..e3a189adf220 100644
--- a/pkgs/development/beam-modules/erlang-ls/default.nix
+++ b/pkgs/development/beam-modules/erlang-ls/default.nix
@@ -45,7 +45,7 @@ rebar3Relx {
     HOME=. rebar3 proper --constraint_tries 100
   '';
   # tests seem to be a bit flaky on darwin, skip them for now
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   installFlags = [ "PREFIX=$(out)" ];
   meta = with lib; {
     homepage = "https://github.com/erlang-ls/erlang_ls";
diff --git a/pkgs/development/compilers/bfc/default.nix b/pkgs/development/compilers/bfc/default.nix
index 83710df4c13b..660f130225c8 100644
--- a/pkgs/development/compilers/bfc/default.nix
+++ b/pkgs/development/compilers/bfc/default.nix
@@ -38,6 +38,6 @@ rustPlatform.buildRustPackage rec {
     homepage = "https://bfc.wilfred.me.uk";
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ figsoda ];
-    broken = stdenv.isAarch64 && stdenv.isLinux;
+    broken = stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux;
   };
 }
diff --git a/pkgs/development/compilers/bigloo/default.nix b/pkgs/development/compilers/bigloo/default.nix
index 9bf22ba6dcf2..b52d3fa6a31c 100644
--- a/pkgs/development/compilers/bigloo/default.nix
+++ b/pkgs/development/compilers/bigloo/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoconf automake libtool ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.ApplicationServices
     libunistring
   ];
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   preConfigure =
     # For libuv on darwin
-    lib.optionalString stdenv.isDarwin ''
+    lib.optionalString stdenv.hostPlatform.isDarwin ''
       export LIBTOOLIZE=libtoolize
     '' +
     # Help libgc's configure.
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
   checkTarget = "test";
 
   # remove forbidden references to $TMPDIR
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     for f in "$out"/bin/*; do
       if isELF "$f"; then
         patchelf --shrink-rpath --allowed-rpath-prefixes "$NIX_STORE" "$f"
@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
     license     = lib.licenses.gpl2Plus;
     platforms   = lib.platforms.unix;
     maintainers = with lib.maintainers; [ thoughtpolice ];
-    broken      = stdenv.isDarwin && stdenv.isAarch64; # segfault during build
+    broken      = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64; # segfault during build
 
     longDescription = ''
       Bigloo is a Scheme implementation devoted to one goal: enabling
diff --git a/pkgs/development/compilers/binaryen/default.nix b/pkgs/development/compilers/binaryen/default.nix
index d6c1442a8b8b..7d78c1d65972 100644
--- a/pkgs/development/compilers/binaryen/default.nix
+++ b/pkgs/development/compilers/binaryen/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
     # "binaryenjs" "binaryenjs_wasm" # not building this
     "lit" "gtest"
   ];
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
 
   meta = with lib; {
     homepage = "https://github.com/WebAssembly/binaryen";
diff --git a/pkgs/development/compilers/blueprint/default.nix b/pkgs/development/compilers/blueprint/default.nix
index 5c1aa1b2a2cd..95903e2e76d1 100644
--- a/pkgs/development/compilers/blueprint/default.nix
+++ b/pkgs/development/compilers/blueprint/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   # requires xvfb-run
-  doCheck = !stdenv.isDarwin
+  doCheck = !stdenv.hostPlatform.isDarwin
   && false;  # tests time out
 
   checkPhase = ''
diff --git a/pkgs/development/compilers/c0/default.nix b/pkgs/development/compilers/c0/default.nix
index 4c3f5ba201de..8dbb1627db3a 100644
--- a/pkgs/development/compilers/c0/default.nix
+++ b/pkgs/development/compilers/c0/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
       --replace '`../get_version.sh`' '${version}' \
       --replace '`date`' '1970-01-01T00:00:00Z' \
       --replace '`hostname`' 'nixpkgs'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     for f in cc0/compiler/bin/coin-o0-support cc0/compiler/bin/cc0-o0-support; do
       substituteInPlace $f --replace '$(brew --prefix gnu-getopt)' '${getopt}'
     done
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     getopt
     mlton
     pkg-config
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.sigtool ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.sigtool ];
 
   buildInputs = [
     boehmgc
@@ -80,6 +80,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     # line 1: ../../bin/wrappergen: cannot execute: required file not found
     # make[2]: *** [../../lib.mk:83:
-    broken = stdenv.isLinux;
+    broken = stdenv.hostPlatform.isLinux;
   };
 }
diff --git a/pkgs/development/compilers/c3c/default.nix b/pkgs/development/compilers/c3c/default.nix
index 01cc7fa28ce3..9058e1af264b 100644
--- a/pkgs/development/compilers/c3c/default.nix
+++ b/pkgs/development/compilers/c3c/default.nix
@@ -35,7 +35,7 @@ llvmPackages.stdenv.mkDerivation (finalAttrs: {
     curl
     libxml2
     libffi
-  ] ++ lib.optionals llvmPackages.stdenv.isDarwin [ xar ];
+  ] ++ lib.optionals llvmPackages.stdenv.hostPlatform.isDarwin [ xar ];
 
   nativeCheckInputs = [ python3 ];
 
diff --git a/pkgs/development/compilers/cakelisp/default.nix b/pkgs/development/compilers/cakelisp/default.nix
index c52c93c5e6c7..48e3e9efa5fb 100644
--- a/pkgs/development/compilers/cakelisp/default.nix
+++ b/pkgs/development/compilers/cakelisp/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation {
         --replace '"/usr/bin/g++"' '"${gcc}/bin/g++"'
     substituteInPlace src/ModuleManager.cpp \
         --replace '"/usr/bin/g++"' '"${gcc}/bin/g++"'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Build.sh --replace '--export-dynamic' '-export_dynamic'
     substituteInPlace runtime/HotReloading.cake --replace '--export-dynamic' '-export_dynamic'
     substituteInPlace Bootstrap.cake --replace '--export-dynamic' '-export_dynamic'
@@ -50,6 +50,6 @@ stdenv.mkDerivation {
     platforms = platforms.darwin ++ platforms.linux;
     maintainers = [ maintainers.sbond75 ];
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/compilers/ccl/default.nix b/pkgs/development/compilers/ccl/default.nix
index 9fe1a8aa8e56..ae82b0ccfda2 100644
--- a/pkgs/development/compilers/ccl/default.nix
+++ b/pkgs/development/compilers/ccl/default.nix
@@ -40,12 +40,12 @@ in stdenv.mkDerivation rec {
     sha256 = cfg.sha256;
   };
 
-  buildInputs = if stdenv.isDarwin then [ bootstrap_cmds m4 ] else [ glibc m4 ];
+  buildInputs = if stdenv.hostPlatform.isDarwin then [ bootstrap_cmds m4 ] else [ glibc m4 ];
 
   CCL_RUNTIME = cfg.runtime;
   CCL_KERNEL = cfg.kernel;
 
-  postPatch = if stdenv.isDarwin then ''
+  postPatch = if stdenv.hostPlatform.isDarwin then ''
     substituteInPlace lisp-kernel/${CCL_KERNEL}/Makefile \
       --replace "M4 = gm4"   "M4 = m4" \
       --replace "dtrace"     "/usr/sbin/dtrace" \
@@ -88,7 +88,7 @@ in stdenv.mkDerivation rec {
     maintainers = lib.teams.lisp.members;
     platforms   = attrNames options;
     # assembler failures during build, x86_64-darwin broken since 2020-10-14
-    broken      = (stdenv.isDarwin && stdenv.isx86_64);
+    broken      = (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64);
     license     = licenses.asl20;
   };
 }
diff --git a/pkgs/development/compilers/chez-racket/shared.nix b/pkgs/development/compilers/chez-racket/shared.nix
index b9368dd4ebea..e9a9e42346d6 100644
--- a/pkgs/development/compilers/chez-racket/shared.nix
+++ b/pkgs/development/compilers/chez-racket/shared.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation (args // {
     export LZ4="$(find ${lz4.out}/lib -type f | sort | head -n1)"
   '';
 
-  nativeBuildInputs = lib.optionals stdenv.isDarwin ([ cctools darwin.autoSignDarwinBinariesHook ]);
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin ([ cctools darwin.autoSignDarwinBinariesHook ]);
   buildInputs = [ libiconv libX11 lz4 ncurses zlib ];
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/compilers/chez/default.nix b/pkgs/development/compilers/chez/default.nix
index 9002db42abc2..de998e550b41 100644
--- a/pkgs/development/compilers/chez/default.nix
+++ b/pkgs/development/compilers/chez/default.nix
@@ -13,9 +13,9 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-03GZASte0ZhcQGnWqH/xjl4fWi3yfkApkfr0XcTyIyw=";
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     darwin.autoSignDarwinBinariesHook
   ];
   buildInputs = [ ncurses libiconv libX11 libuuid ];
diff --git a/pkgs/development/compilers/chicken/4/chicken.nix b/pkgs/development/compilers/chicken/4/chicken.nix
index b96a1d459d71..a36ef4569e30 100644
--- a/pkgs/development/compilers/chicken/4/chicken.nix
+++ b/pkgs/development/compilers/chicken/4/chicken.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation {
     sha256 = "0hvckhi5gfny3mlva6d7y9pmx7cbwvq0r7mk11k3sdiik9hlkmdd";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # There is not enough space in the load command to accomodate a full path to the store,
     # so use `@executable_path` to specify a relative path to chicken’s lib folder.
     sed -e '/POSTINSTALL_PROGRAM_FLAGS = /{s|$(LIBDIR)|@executable_path/../lib|}' \
@@ -30,12 +30,12 @@ stdenv.mkDerivation {
   setupHook = lib.optional (bootstrap-chicken != null) ./setup-hook.sh;
 
   # -fno-strict-overflow is not a supported argument in clang on darwin
-  hardeningDisable = lib.optionals stdenv.isDarwin ["strictoverflow"];
+  hardeningDisable = lib.optionals stdenv.hostPlatform.isDarwin ["strictoverflow"];
 
   makeFlags = [
     "PLATFORM=${platform}" "PREFIX=$(out)"
     "VARDIR=$(out)/var/lib"
-  ] ++ (lib.optionals stdenv.isDarwin [
+  ] ++ (lib.optionals stdenv.hostPlatform.isDarwin [
     "XCODE_TOOL_PATH=${darwin.binutils.bintools}/bin"
     "C_COMPILER=$(CC)"
     "POSTINSTALL_PROGRAM=${stdenv.cc.targetPrefix}install_name_tool"
@@ -49,7 +49,7 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [
     makeWrapper
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     darwin.autoSignDarwinBinariesHook
   ];
 
diff --git a/pkgs/development/compilers/chicken/5/chicken.nix b/pkgs/development/compilers/chicken/5/chicken.nix
index 2f0b8316ae8b..53b4cc9024d5 100644
--- a/pkgs/development/compilers/chicken/5/chicken.nix
+++ b/pkgs/development/compilers/chicken/5/chicken.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation (finalAttrs: {
     "PREFIX=$(out)"
     "C_COMPILER=$(CC)"
     "CXX_COMPILER=$(CXX)"
-  ] ++ (lib.optionals stdenv.isDarwin [
+  ] ++ (lib.optionals stdenv.hostPlatform.isDarwin [
     "XCODE_TOOL_PATH=${darwin.binutils.bintools}/bin"
     "LINKER_OPTIONS=-headerpad_max_install_names"
     "POSTINSTALL_PROGRAM=install_name_tool"
@@ -47,7 +47,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [
     makeWrapper
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     darwin.autoSignDarwinBinariesHook
   ];
 
@@ -55,7 +55,7 @@ stdenv.mkDerivation (finalAttrs: {
     bootstrap-chicken
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   postCheck = ''
     ./csi -R chicken.pathname -R chicken.platform \
        -p "(assert (equal? \"${toString finalAttrs.binaryVersion}\" (pathname-file (car (repository-path)))))"
diff --git a/pkgs/development/compilers/chicken/5/overrides.nix b/pkgs/development/compilers/chicken/5/overrides.nix
index b132036bbae4..0aaf24b86ea1 100644
--- a/pkgs/development/compilers/chicken/5/overrides.nix
+++ b/pkgs/development/compilers/chicken/5/overrides.nix
@@ -19,7 +19,7 @@ let
   addToPropagatedBuildInputsWithPkgConfig = pkg: old:
     (addPkgConfig old) // (addToPropagatedBuildInputs pkg old);
   broken = addMetaAttrs { broken = true; };
-  brokenOnDarwin = addMetaAttrs { broken = stdenv.isDarwin; };
+  brokenOnDarwin = addMetaAttrs { broken = stdenv.hostPlatform.isDarwin; };
   addToCscOptions = opt: old: {
     CSC_OPTIONS = lib.concatStringsSep " " ([ old.CSC_OPTIONS or "" ] ++ lib.toList opt);
   };
@@ -27,8 +27,8 @@ in
 {
   allegro = old:
     ((addToBuildInputsWithPkgConfig ([ pkgs.allegro5 pkgs.libglvnd pkgs.libGLU ]
-    ++ lib.optionals stdenv.isDarwin [ pkgs.darwin.apple_sdk.frameworks.OpenGL ]
-    ++ lib.optionals stdenv.isLinux [ pkgs.xorg.libX11 ])) old) // {
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ pkgs.darwin.apple_sdk.frameworks.OpenGL ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ pkgs.xorg.libX11 ])) old) // {
       # depends on 'chicken' egg, which doesn't exist,
       # so we specify all the deps here
       propagatedBuildInputs = [
@@ -72,12 +72,12 @@ in
   gl-utils = addPkgConfig;
   glfw3 = addToBuildInputsWithPkgConfig pkgs.glfw3;
   glls = addPkgConfig;
-  iconv = addToBuildInputs (lib.optional stdenv.isDarwin pkgs.libiconv);
+  iconv = addToBuildInputs (lib.optional stdenv.hostPlatform.isDarwin pkgs.libiconv);
   icu = addToBuildInputsWithPkgConfig pkgs.icu;
   imlib2 = addToBuildInputsWithPkgConfig pkgs.imlib2;
   inotify = old:
-    (addToBuildInputs (lib.optional stdenv.isDarwin pkgs.libinotify-kqueue) old)
-    // lib.optionalAttrs stdenv.isDarwin (addToCscOptions "-L -linotify" old);
+    (addToBuildInputs (lib.optional stdenv.hostPlatform.isDarwin pkgs.libinotify-kqueue) old)
+    // lib.optionalAttrs stdenv.hostPlatform.isDarwin (addToCscOptions "-L -linotify" old);
   leveldb = addToBuildInputs pkgs.leveldb;
   magic = addToBuildInputs pkgs.file;
   mdh = old:
@@ -94,7 +94,7 @@ in
   nanomsg = addToBuildInputs pkgs.nanomsg;
   ncurses = addToBuildInputsWithPkgConfig [ pkgs.ncurses ];
   opencl = addToBuildInputs ([ pkgs.opencl-headers pkgs.ocl-icd ]
-    ++ lib.optionals stdenv.isDarwin [ pkgs.darwin.apple_sdk.frameworks.OpenCL ]);
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ pkgs.darwin.apple_sdk.frameworks.OpenCL ]);
   openssl = addToBuildInputs pkgs.openssl;
   plot = addToBuildInputs pkgs.plotutils;
   postgresql = addToBuildInputsWithPkgConfig pkgs.postgresql;
@@ -154,8 +154,8 @@ in
   };
   opengl = old:
     (addToBuildInputsWithPkgConfig
-      (lib.optionals (!stdenv.isDarwin) [ pkgs.libGL pkgs.libGLU ]
-      ++ lib.optionals stdenv.isDarwin [ pkgs.darwin.apple_sdk.frameworks.Foundation pkgs.darwin.apple_sdk.frameworks.OpenGL ])
+      (lib.optionals (!stdenv.hostPlatform.isDarwin) [ pkgs.libGL pkgs.libGLU ]
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ pkgs.darwin.apple_sdk.frameworks.Foundation pkgs.darwin.apple_sdk.frameworks.OpenGL ])
       old)
     // {
       postPatch = ''
@@ -164,7 +164,7 @@ in
       '';
     };
   posix-shm = old: {
-    postPatch = lib.optionalString stdenv.isDarwin ''
+    postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace build.scm \
         --replace "-lrt" ""
     '';
diff --git a/pkgs/development/compilers/ciao/default.nix b/pkgs/development/compilers/ciao/default.nix
index 29e103226022..c68b5fe06547 100644
--- a/pkgs/development/compilers/ciao/default.nix
+++ b/pkgs/development/compilers/ciao/default.nix
@@ -28,6 +28,6 @@ stdenv.mkDerivation rec {
     license = licenses.lgpl21;
     maintainers = with maintainers; [ suhr ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/ciao.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/ciao.x86_64-darwin
   };
 }
diff --git a/pkgs/development/compilers/circt/circt-llvm.nix b/pkgs/development/compilers/circt/circt-llvm.nix
index 0043702fd847..8375ccc22f8f 100644
--- a/pkgs/development/compilers/circt/circt-llvm.nix
+++ b/pkgs/development/compilers/circt/circt-llvm.nix
@@ -34,7 +34,7 @@
 
   # Get rid of ${extra_libdir} (which ends up containing a path to circt-llvm.dev
   # in circt) so that we only have to remove the one fixed rpath.
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace llvm/llvm/cmake/modules/AddLLVM.cmake \
       --replace-fail 'set(_install_rpath "@loader_path/../lib''${LLVM_LIBDIR_SUFFIX}" ''${extra_libdir})' \
         'set(_install_rpath "@loader_path/../lib''${LLVM_LIBDIR_SUFFIX}")'
@@ -69,7 +69,7 @@
   # it hasn't been populated yet.
   #
   # Inspired by fixDarwinDylibNames.
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     local flags=(-delete_rpath @loader_path/../lib)
     for file in "$lib"/lib/*.dylib; do
       flags+=(-change @rpath/"$(basename "$file")" "$file")
diff --git a/pkgs/development/compilers/clasp/default.nix b/pkgs/development/compilers/clasp/default.nix
index d5d56546b576..4613357ded3b 100644
--- a/pkgs/development/compilers/clasp/default.nix
+++ b/pkgs/development/compilers/clasp/default.nix
@@ -70,7 +70,7 @@ stdenv.mkDerivation rec {
     platforms = ["x86_64-linux" "x86_64-darwin"];
     # Upstream claims support, but breaks with:
     # error: use of undeclared identifier 'aligned_alloc'
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/clasp-developers/clasp";
     mainProgram = "clasp";
   };
diff --git a/pkgs/development/compilers/cmdstan/default.nix b/pkgs/development/compilers/cmdstan/default.nix
index a6b6833289b7..5199d457f4df 100644
--- a/pkgs/development/compilers/cmdstan/default.nix
+++ b/pkgs/development/compilers/cmdstan/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [
     "build"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "arch=${stdenv.hostPlatform.darwinArch}"
   ];
 
diff --git a/pkgs/development/compilers/codon/default.nix b/pkgs/development/compilers/codon/default.nix
index 520c6386490b..88d3c01d713a 100644
--- a/pkgs/development/compilers/codon/default.nix
+++ b/pkgs/development/compilers/codon/default.nix
@@ -125,7 +125,7 @@ stdenv.mkDerivation {
     "-DLLVM_USE_LINKER=lld"
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     ln -s $out/lib/codon/*.dylib $out/lib/
   '';
 
diff --git a/pkgs/development/compilers/corretto/mk-corretto.nix b/pkgs/development/compilers/corretto/mk-corretto.nix
index 1059935ce20f..37ac9006515d 100644
--- a/pkgs/development/compilers/corretto/mk-corretto.nix
+++ b/pkgs/development/compilers/corretto/mk-corretto.nix
@@ -53,7 +53,7 @@ jdk.overrideAttrs (finalAttrs: oldAttrs: {
   # The Linux installer is placed at linux/universal/tar whereas the MacOS
   # one is at mac/tar.
   gradleBuildTask =
-    if stdenv.isDarwin then
+    if stdenv.hostPlatform.isDarwin then
       ":installers:mac:tar:build"
     else ":installers:linux:universal:tar:packageBuildResults";
 
diff --git a/pkgs/development/compilers/crystal/default.nix b/pkgs/development/compilers/crystal/default.nix
index c95298cbfe2a..0907c1c4d68d 100644
--- a/pkgs/development/compilers/crystal/default.nix
+++ b/pkgs/development/compilers/crystal/default.nix
@@ -144,7 +144,7 @@ let
         substituteInPlace spec/std/socket/udp_socket_spec.cr \
           --replace 'it "joins and transmits to multicast groups"' 'pending "joins and transmits to multicast groups"'
 
-      '' + lib.optionalString (stdenv.isDarwin && lib.versionAtLeast version "1.3.0" && lib.versionOlder version "1.7.0") ''
+      '' + lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionAtLeast version "1.3.0" && lib.versionOlder version "1.7.0") ''
         # See https://github.com/NixOS/nixpkgs/pull/195606#issuecomment-1356491277
         substituteInPlace spec/compiler/loader/unix_spec.cr \
           --replace 'it "parses file paths"' 'pending "parses file paths"'
@@ -175,7 +175,7 @@ let
         libxml2
         openssl
       ] ++ extraBuildInputs
-      ++ lib.optionals stdenv.isDarwin [ libiconv ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
       makeFlags = [
         "CRYSTAL_CONFIG_VERSION=${version}"
diff --git a/pkgs/development/compilers/dart/default.nix b/pkgs/development/compilers/dart/default.nix
index 9a08b3d51732..d6d538d5c844 100644
--- a/pkgs/development/compilers/dart/default.nix
+++ b/pkgs/development/compilers/dart/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation (finalAttrs: {
     mkdir -p $out
     cp -R * $out/
     echo $libPath
-  '' + lib.optionalString (stdenv.isLinux) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isLinux) ''
     find $out/bin -executable -type f -exec patchelf --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) {} \;
   '';
 
@@ -42,7 +42,7 @@ stdenv.mkDerivation (finalAttrs: {
 
       testCompile = runCommand "dart-test-compile" {
         nativeBuildInputs = [ finalAttrs.finalPackage ]
-          ++ lib.optionals stdenv.isDarwin [ cctools darwin.sigtool ];
+          ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools darwin.sigtool ];
       } ''
         HELLO_MESSAGE="Hello, world!"
         echo "void main() => print('$HELLO_MESSAGE');" > hello.dart
diff --git a/pkgs/development/compilers/dictu/default.nix b/pkgs/development/compilers/dictu/default.nix
index b58d86871374..fedf3deed62c 100644
--- a/pkgs/development/compilers/dictu/default.nix
+++ b/pkgs/development/compilers/dictu/default.nix
@@ -84,6 +84,6 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     maintainers = with maintainers; [ luc65r ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/dictu.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/dictu.x86_64-darwin
   };
 }
diff --git a/pkgs/development/compilers/dotnet/build-dotnet.nix b/pkgs/development/compilers/dotnet/build-dotnet.nix
index 0c9de3f05cab..bba31fe394ca 100644
--- a/pkgs/development/compilers/dotnet/build-dotnet.nix
+++ b/pkgs/development/compilers/dotnet/build-dotnet.nix
@@ -61,7 +61,7 @@ let
       <ItemGroup>
         <CustomLinkerArg Include="-Wl,-rpath,'${lib.makeLibraryPath [ icu zlib openssl ]}'" />
       </ItemGroup>
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       <Import Project="${signAppHost}" />
   '' + ''
     </Project>
@@ -74,8 +74,8 @@ mkCommon type rec {
   # Some of these dependencies are `dlopen()`ed.
   nativeBuildInputs = [
     makeWrapper
-  ] ++ lib.optional stdenv.isLinux autoPatchelfHook
-  ++ lib.optionals (type == "sdk" && stdenv.isDarwin) [
+  ] ++ lib.optional stdenv.hostPlatform.isLinux autoPatchelfHook
+  ++ lib.optionals (type == "sdk" && stdenv.hostPlatform.isDarwin) [
     xmlstarlet
     sigtool
   ];
@@ -87,7 +87,7 @@ mkCommon type rec {
     libkrb5
     curl
     xmlstarlet
-  ] ++ lib.optional stdenv.isLinux lttng-ust_2_12;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux lttng-ust_2_12;
 
   src = fetchurl (
     srcs."${stdenv.hostPlatform.system}" or (throw
@@ -102,7 +102,7 @@ mkCommon type rec {
       -s //_:Project -t elem -n Import \
       -i \$prev -t attr -n Project -v "${extraTargets}" \
       sdk/*/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     codesign --remove-signature packs/Microsoft.NETCore.App.Host.osx-*/*/runtimes/osx-*/native/{apphost,singlefilehost}
   '') else null;
 
@@ -144,7 +144,7 @@ mkCommon type rec {
   '';
 
   # fixes: Could not load ICU data. UErrorCode: 2
-  propagatedSandboxProfile = lib.optionalString stdenv.isDarwin ''
+  propagatedSandboxProfile = lib.optionalString stdenv.hostPlatform.isDarwin ''
     (allow file-read* (subpath "/usr/share/icu"))
     (allow file-read* (subpath "/private/var/db/mds/system"))
     (allow mach-lookup (global-name "com.apple.SecurityServer")
diff --git a/pkgs/development/compilers/dotnet/common.nix b/pkgs/development/compilers/dotnet/common.nix
index 9fcd79c752d1..b4891a83e41f 100644
--- a/pkgs/development/compilers/dotnet/common.nix
+++ b/pkgs/development/compilers/dotnet/common.nix
@@ -90,7 +90,7 @@
               src = built;
               nativeBuildInputs = [ built ] ++ runInputs;
               passthru = { inherit built; };
-            } // lib.optionalAttrs (stdenv.isDarwin && runAllowNetworking) {
+            } // lib.optionalAttrs (stdenv.hostPlatform.isDarwin && runAllowNetworking) {
               sandboxProfile = ''
                 (allow network-inbound (local ip))
                 (allow mach-lookup (global-name "com.apple.FSEvents"))
@@ -180,12 +180,12 @@
     } // lib.optionalAttrs finalAttrs.finalPackage.hasILCompiler {
       aot = mkDotnetTest {
         name = "aot";
-        stdenv = if stdenv.isDarwin then swiftPackages.stdenv else stdenv;
+        stdenv = if stdenv.hostPlatform.isDarwin then swiftPackages.stdenv else stdenv;
         template = "console";
         usePackageSource = true;
         buildInputs =
           [ zlib
-          ] ++ lib.optional stdenv.isDarwin (with darwin; with apple_sdk.frameworks; [
+          ] ++ lib.optional stdenv.hostPlatform.isDarwin (with darwin; with apple_sdk.frameworks; [
             swiftPackages.swift
             Foundation
             CryptoKit
diff --git a/pkgs/development/compilers/dotnet/patch-nupkgs.nix b/pkgs/development/compilers/dotnet/patch-nupkgs.nix
index c351ea7b32ef..528b236239e4 100644
--- a/pkgs/development/compilers/dotnet/patch-nupkgs.nix
+++ b/pkgs/development/compilers/dotnet/patch-nupkgs.nix
@@ -20,7 +20,7 @@ let
     libunwind
     libuuid
     openssl
-  ] ++ lib.optional stdenv.isLinux lttng-ust_2_12);
+  ] ++ lib.optional stdenv.hostPlatform.isLinux lttng-ust_2_12);
 
 in writeShellScriptBin "patch-nupkgs" (''
   set -euo pipefail
@@ -35,7 +35,7 @@ in writeShellScriptBin "patch-nupkgs" (''
       if [ "$magic" = $'\177ELF' ]; then return 0; else return 1; fi
   }
   cd "$1"
-'' + lib.optionalString stdenv.isLinux ''
+'' + lib.optionalString stdenv.hostPlatform.isLinux ''
   for x in */* */*; do
     # .nupkg.metadata is written last, so we know the packages is complete
     [[ -d "$x" ]] && [[ -f "$x"/.nupkg.metadata ]] \
@@ -68,7 +68,7 @@ in writeShellScriptBin "patch-nupkgs" (''
     done
     touch "$x"/.nix-patched
   done
-'' + lib.optionalString stdenv.isDarwin ''
+'' + lib.optionalString stdenv.hostPlatform.isDarwin ''
   for x in microsoft.dotnet.ilcompiler/*; do
     # .nupkg.metadata is written last, so we know the packages is complete
     [[ -d "$x" ]] && [[ -f "$x"/.nupkg.metadata ]] \
diff --git a/pkgs/development/compilers/dotnet/vmr.nix b/pkgs/development/compilers/dotnet/vmr.nix
index d6cfcd9035d9..41b0eac15734 100644
--- a/pkgs/development/compilers/dotnet/vmr.nix
+++ b/pkgs/development/compilers/dotnet/vmr.nix
@@ -32,7 +32,7 @@
 }:
 
 let
-  stdenv = if clangStdenv.isDarwin
+  stdenv = if clangStdenv.hostPlatform.isDarwin
     then swiftPackages.stdenv
     else clangStdenv;
 
@@ -59,7 +59,7 @@ in stdenv.mkDerivation rec {
   version = release;
 
   # TODO: fix this in the binary sdk packages
-  preHook = lib.optionalString stdenv.isDarwin ''
+  preHook = lib.optionalString stdenv.hostPlatform.isDarwin ''
     addToSearchPath DYLD_LIBRARY_PATH "${_icu}/lib"
     export DYLD_LIBRARY_PATH
   '';
diff --git a/pkgs/development/compilers/dtc/default.nix b/pkgs/development/compilers/dtc/default.nix
index d244fc62aef4..5fbf929d5e52 100644
--- a/pkgs/development/compilers/dtc/default.nix
+++ b/pkgs/development/compilers/dtc/default.nix
@@ -108,7 +108,7 @@ stdenv.mkDerivation (finalAttrs: {
   doCheck =
     # Checks are broken on aarch64 darwin
     # https://github.com/NixOS/nixpkgs/pull/118700#issuecomment-885892436
-    !stdenv.isDarwin &&
+    !stdenv.hostPlatform.isDarwin &&
     # Checks are broken when building statically on x86_64 linux with musl
     # One of the test tries to build a shared library and this causes the linker:
     # x86_64-unknown-linux-musl-ld: /nix/store/h9gcvnp90mpniyx2v0d0p3s06hkx1v2p-x86_64-unknown-linux-musl-gcc-13.3.0/lib/gcc/x86_64-unknown-linux-musl/13.3.0/crtbeginT.o: relocation R_X86_64_32 against hidden symbol `__TMC_END__' can not be used when making a shared object
diff --git a/pkgs/development/compilers/ecl/16.1.2.nix b/pkgs/development/compilers/ecl/16.1.2.nix
index 75055130ada2..121935df5f05 100644
--- a/pkgs/development/compilers/ecl/16.1.2.nix
+++ b/pkgs/development/compilers/ecl/16.1.2.nix
@@ -94,6 +94,6 @@ stdenv.mkDerivation rec {
     maintainers = lib.teams.lisp.members;
     platforms = platforms.unix;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/compilers/elm/packages/elm-json/default.nix b/pkgs/development/compilers/elm/packages/elm-json/default.nix
index efb3fbfcc5cd..bc456d2479c1 100644
--- a/pkgs/development/compilers/elm/packages/elm-json/default.nix
+++ b/pkgs/development/compilers/elm/packages/elm-json/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     curl
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   cargoHash = "sha256-8SOpL8nfhYen9vza0LYpB/5fgVmBwG7vGMmFOaJskIc=";
 
diff --git a/pkgs/development/compilers/elm/packages/elm-test-rs/default.nix b/pkgs/development/compilers/elm/packages/elm-test-rs/default.nix
index a457a422cf85..5ff6d4117b10 100644
--- a/pkgs/development/compilers/elm/packages/elm-test-rs/default.nix
+++ b/pkgs/development/compilers/elm/packages/elm-test-rs/default.nix
@@ -19,8 +19,8 @@ rustPlatform.buildRustPackage rec {
   };
 
   buildInputs =
-    lib.optionals (!stdenv.isDarwin) [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (
+    lib.optionals (!stdenv.hostPlatform.isDarwin) [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         Security
diff --git a/pkgs/development/compilers/elm/packages/lamdera/default.nix b/pkgs/development/compilers/elm/packages/lamdera/default.nix
index 79101092e788..eca3fcd48040 100644
--- a/pkgs/development/compilers/elm/packages/lamdera/default.nix
+++ b/pkgs/development/compilers/elm/packages/lamdera/default.nix
@@ -4,8 +4,8 @@
 }:
 
 let
-  os = if stdenv.isDarwin then "macos" else "linux";
-  arch = if stdenv.isAarch64 then "arm64" else "x86_64";
+  os = if stdenv.hostPlatform.isDarwin then "macos" else "linux";
+  arch = if stdenv.hostPlatform.isAarch64 then "arm64" else "x86_64";
   hashes =
     {
       "x86_64-linux" = "a51d5b9a011c54b0001ff3273cee027774686e233adadb20b1978d2cabfe32a6";
diff --git a/pkgs/development/compilers/elm/packages/node/node-composition.nix b/pkgs/development/compilers/elm/packages/node/node-composition.nix
index 1580d1f43fdd..0ab5a28046c2 100644
--- a/pkgs/development/compilers/elm/packages/node/node-composition.nix
+++ b/pkgs/development/compilers/elm/packages/node/node-composition.nix
@@ -8,7 +8,7 @@ let
   nodeEnv = import ../../../../node-packages/node-env.nix {
     inherit (pkgs) stdenv lib python2 runCommand writeTextFile writeShellScript;
     inherit pkgs nodejs;
-    libtool = if pkgs.stdenv.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
+    libtool = if pkgs.stdenv.hostPlatform.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
   };
 in
 import ./node-packages.nix {
diff --git a/pkgs/development/compilers/erg/default.nix b/pkgs/development/compilers/erg/default.nix
index 9276a311a581..06bcc8d14700 100644
--- a/pkgs/development/compilers/erg/default.nix
+++ b/pkgs/development/compilers/erg/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
 
   env = {
     BUILD_DATE = "1970/01/01 00:00:00";
-    CASE_SENSITIVE = lib.boolToString (!stdenv.isDarwin);
+    CASE_SENSITIVE = lib.boolToString (!stdenv.hostPlatform.isDarwin);
     GIT_HASH_SHORT = src.rev;
   };
 
diff --git a/pkgs/development/compilers/fasm/bin.nix b/pkgs/development/compilers/fasm/bin.nix
index f23e9540928a..71e2146a7004 100644
--- a/pkgs/development/compilers/fasm/bin.nix
+++ b/pkgs/development/compilers/fasm/bin.nix
@@ -12,7 +12,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
   installPhase = ''
     runHook preInstall
 
-    install -D fasm${lib.optionalString stdenvNoCC.isx86_64 ".x64"} $out/bin/fasm
+    install -D fasm${lib.optionalString stdenvNoCC.hostPlatform.isx86_64 ".x64"} $out/bin/fasm
 
     runHook postInstall
   '';
diff --git a/pkgs/development/compilers/flutter/engine/package.nix b/pkgs/development/compilers/flutter/engine/package.nix
index 443db6af3680..d9b20898886c 100644
--- a/pkgs/development/compilers/flutter/engine/package.nix
+++ b/pkgs/development/compilers/flutter/engine/package.nix
@@ -114,7 +114,7 @@ stdenv.mkDerivation (finalAttrs: {
 
     paths =
       expandDeps (
-        lib.optionals (stdenv.isLinux) [
+        lib.optionals (stdenv.hostPlatform.isLinux) [
           gtk3
           wayland
           libepoxy
@@ -139,7 +139,7 @@ stdenv.mkDerivation (finalAttrs: {
           xorg.xorgproto
           zlib
         ]
-        ++ lib.optionals (stdenv.isDarwin) [
+        ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
           clang
           llvm
         ]
@@ -161,7 +161,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-I${finalAttrs.toolchain}/include"
   ] ++ lib.optional (!isOptimized) "-U_FORTIFY_SOURCE";
 
-  nativeCheckInputs = lib.optionals stdenv.isLinux [
+  nativeCheckInputs = lib.optionals stdenv.hostPlatform.isLinux [
     xorg.xorgserver
     openbox
   ];
@@ -175,8 +175,8 @@ stdenv.mkDerivation (finalAttrs: {
       ninja
       dart
     ]
-    ++ lib.optionals (stdenv.isLinux) [ patchelf ]
-    ++ lib.optionals (stdenv.isDarwin) [
+    ++ lib.optionals (stdenv.hostPlatform.isLinux) [ patchelf ]
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
       darwin.system_cmds
       darwin.xcode
       tools.xcode-select
@@ -214,7 +214,7 @@ stdenv.mkDerivation (finalAttrs: {
     mkdir -p src/${dartPath}/tools/sdks
     ln -s ${dart} src/${dartPath}/tools/sdks/dart-sdk
 
-    ${lib.optionalString (stdenv.isLinux) ''
+    ${lib.optionalString (stdenv.hostPlatform.isLinux) ''
       for patchtool in ''${patchtools[@]}; do
         patchelf src/$patchtool --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker)
       done
@@ -269,7 +269,7 @@ stdenv.mkDerivation (finalAttrs: {
 
       export PYTHONPATH=$src/src/build
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       export PATH=${darwin.xcode}/Contents/Developer/usr/bin/:$PATH
     ''
     + ''
@@ -322,7 +322,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   meta = with lib; {
     # Very broken on Darwin
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "The Flutter engine";
     homepage = "https://flutter.dev";
     maintainers = with maintainers; [ RossComputerGuy ];
diff --git a/pkgs/development/compilers/flutter/flutter-tools.nix b/pkgs/development/compilers/flutter/flutter-tools.nix
index 306765cd0a42..1639d54a869e 100644
--- a/pkgs/development/compilers/flutter/flutter-tools.nix
+++ b/pkgs/development/compilers/flutter/flutter-tools.nix
@@ -28,7 +28,7 @@ buildDartApplication.override { inherit dart; } rec {
     popd
   ''
   # Use arm64 instead of arm64e.
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace lib/src/ios/xcodeproj.dart \
       --replace-fail arm64e arm64
   '';
diff --git a/pkgs/development/compilers/fpc/binary.nix b/pkgs/development/compilers/fpc/binary.nix
index e4c8a2358fc8..6f8acae7f916 100644
--- a/pkgs/development/compilers/fpc/binary.nix
+++ b/pkgs/development/compilers/fpc/binary.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
         url = "mirror://sourceforge/project/freepascal/Linux/${version}/fpc-${version}.aarch64-linux.tar";
         sha256 = "b39470f9b6b5b82f50fc8680a5da37d2834f2129c65c24c5628a80894d565451";
       }
-    else if stdenv.isDarwin then
+    else if stdenv.hostPlatform.isDarwin then
       fetchurl {
         url = "mirror://sourceforge/project/freepascal/Mac%20OS%20X/${version}/fpc-${version}.intelarm64-macosx.dmg";
         sha256 = "05d4510c8c887e3c68de20272abf62171aa5b2ef1eba6bce25e4c0bc41ba8b7d";
diff --git a/pkgs/development/compilers/fpc/default.nix b/pkgs/development/compilers/fpc/default.nix
index 3c9eb60d57c7..70f3b60efb8d 100644
--- a/pkgs/development/compilers/fpc/default.nix
+++ b/pkgs/development/compilers/fpc/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [ startFPC gawk ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       darwin.apple_sdk.frameworks.CoreFoundation
     ];
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   # Patch paths for linux systems. Other platforms will need their own patches.
   patches = [
     ./mark-paths.patch # mark paths for later substitution in postPatch
-  ] ++ lib.optional stdenv.isAarch64 (fetchpatch {
+  ] ++ lib.optional stdenv.hostPlatform.isAarch64 (fetchpatch {
     # backport upstream patch for aarch64 glibc 2.34
     url = "https://gitlab.com/freepascal.org/fpc/source/-/commit/a20a7e3497bccf3415bf47ccc55f133eb9d6d6a0.patch";
     hash = "sha256-xKTBwuOxOwX9KCazQbBNLhMXCqkuJgIFvlXewHY63GM=";
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
   '';
 
   NIX_LDFLAGS = lib.optionalString
-    stdenv.isDarwin (with darwin.apple_sdk.frameworks; "-F${CoreFoundation}/Library/Frameworks");
+    stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; "-F${CoreFoundation}/Library/Frameworks");
 
   makeFlags = [ "NOGDB=1" "FPC=${startFPC}/bin/fpc" ];
 
diff --git a/pkgs/development/compilers/gambit/build.nix b/pkgs/development/compilers/gambit/build.nix
index 05d92d434faf..78c98fe50f21 100644
--- a/pkgs/development/compilers/gambit/build.nix
+++ b/pkgs/development/compilers/gambit/build.nix
@@ -78,9 +78,9 @@ gccStdenv.mkDerivation rec {
   ] ++ gambit-params.extraOptions
     # TODO: pick an appropriate architecture to optimize on on x86-64?
     # https://gcc.gnu.org/onlinedocs/gcc-4.8.4/gcc/i386-and-x86-64-Options.html#i386-and-x86-64-Options
-    # ++ lib.optional pkgs.stdenv.isx86_64 "--enable-march=core-avx2"
+    # ++ lib.optional pkgs.stdenv.hostPlatform.isx86_64 "--enable-march=core-avx2"
     # Do not enable poll on darwin due to https://github.com/gambit/gambit/issues/498
-    ++ lib.optional (!gccStdenv.isDarwin) "--enable-poll";
+    ++ lib.optional (!gccStdenv.hostPlatform.isDarwin) "--enable-poll";
 
   configurePhase = ''
     export CC=${gccStdenv.cc}/bin/${gccStdenv.cc.targetPrefix}gcc \
@@ -97,7 +97,7 @@ gccStdenv.mkDerivation rec {
 
     # OS-specific paths are hardcoded in ./configure
     substituteInPlace config.status \
-      ${lib.optionalString (gccStdenv.isDarwin && !gambit-params.stable)
+      ${lib.optionalString (gccStdenv.hostPlatform.isDarwin && !gambit-params.stable)
          ''--replace "/usr/local/opt/openssl@1.1" "${lib.getLib openssl}"''} \
         --replace "/usr/local/opt/openssl" "${lib.getLib openssl}"
 
diff --git a/pkgs/development/compilers/gcc/all.nix b/pkgs/development/compilers/gcc/all.nix
index 232241989b9a..5d5abb82c3eb 100644
--- a/pkgs/development/compilers/gcc/all.nix
+++ b/pkgs/development/compilers/gcc/all.nix
@@ -24,7 +24,7 @@ let
         profiledCompiler = false;
         libcCross = if stdenv.targetPlatform != stdenv.buildPlatform then args.libcCross else null;
         threadsCross = if stdenv.targetPlatform != stdenv.buildPlatform then threadsCross else { };
-        isl = if       stdenv.isDarwin then null
+        isl = if       stdenv.hostPlatform.isDarwin then null
               else if    atLeast "9"   then isl_0_20
               else    /* atLeast "7" */     isl_0_17;
       } // lib.optionalAttrs (!(atLeast "9")) {
diff --git a/pkgs/development/compilers/gcc/patches/default.nix b/pkgs/development/compilers/gcc/patches/default.nix
index b226975ef034..9c756ccfa4ee 100644
--- a/pkgs/development/compilers/gcc/patches/default.nix
+++ b/pkgs/development/compilers/gcc/patches/default.nix
@@ -120,16 +120,16 @@ in
 ## Darwin
 
 # Fixes detection of Darwin on x86_64-darwin. Otherwise, GCC uses a deployment target of 10.5, which crashes ld64.
-++ optional (atLeast14 && stdenv.isDarwin && stdenv.isx86_64) ../patches/14/libgcc-darwin-detection.patch
+++ optional (atLeast14 && stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) ../patches/14/libgcc-darwin-detection.patch
 
 # Fix detection of bootstrap compiler Ada support (cctools as) on Nix Darwin
-++ optional (atLeast12 && stdenv.isDarwin && langAda) ./ada-cctools-as-detection-configure.patch
+++ optional (atLeast12 && stdenv.hostPlatform.isDarwin && langAda) ./ada-cctools-as-detection-configure.patch
 
 # Remove CoreServices on Darwin, as it is only needed for macOS SDK 14+
-++ optional (atLeast14 && stdenv.isDarwin && langAda) ../patches/14/gcc-darwin-remove-coreservices.patch
+++ optional (atLeast14 && stdenv.hostPlatform.isDarwin && langAda) ../patches/14/gcc-darwin-remove-coreservices.patch
 
 # Use absolute path in GNAT dylib install names on Darwin
-++ optionals (stdenv.isDarwin && langAda) ({
+++ optionals (stdenv.hostPlatform.isDarwin && langAda) ({
   "14" = [ ../patches/14/gnat-darwin-dylib-install-name-14.patch ];
   "13" = [ ./gnat-darwin-dylib-install-name-13.patch ];
   "12" = [ ./gnat-darwin-dylib-install-name.patch ];
@@ -137,7 +137,7 @@ in
 
 # We only apply this patch when building a native toolchain for aarch64-darwin, as it breaks building
 # a foreign one: https://github.com/iains/gcc-12-branch/issues/18
-++ optionals (stdenv.isDarwin && stdenv.isAarch64 && buildPlatform == hostPlatform && hostPlatform == targetPlatform) ({
+++ optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 && buildPlatform == hostPlatform && hostPlatform == targetPlatform) ({
   "14" = [ (fetchpatch {
     # There are no upstream release tags in https://github.com/iains/gcc-14-branch.
     # 04696df09633baf97cdbbdd6e9929b9d472161d3 is the commit from https://github.com/gcc-mirror/gcc/releases/tag/releases%2Fgcc-14.2.0
@@ -170,7 +170,7 @@ in
 }.${majorVersion} or [])
 
 # Work around newer AvailabilityInternal.h when building older versions of GCC.
-++ optionals (stdenv.isDarwin) ({
+++ optionals (stdenv.hostPlatform.isDarwin) ({
   "9" = [ ../patches/9/AvailabilityInternal.h-fixincludes.patch ];
   "8" = [ ../patches/8/AvailabilityInternal.h-fixincludes.patch ];
   "7" = [ ../patches/7/AvailabilityInternal.h-fixincludes.patch ];
@@ -202,7 +202,7 @@ in
 ## gcc 11.0 and older ##############################################################################
 
 # libgcc’s `configure` script misdetects aarch64-darwin, resulting in an invalid deployment target.
-++ optional (is11 && stdenv.isDarwin && stdenv.isAarch64) ./11/libgcc-aarch64-darwin-detection.patch
+++ optional (is11 && stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ./11/libgcc-aarch64-darwin-detection.patch
 
 # openjdk build fails without this on -march=opteron; is upstream in gcc12
 ++ optionals (is11) [ ./11/gcc-issue-103910.patch ]
diff --git a/pkgs/development/compilers/gerbil/build.nix b/pkgs/development/compilers/gerbil/build.nix
index c71ea137eadc..5ed7339c31be 100644
--- a/pkgs/development/compilers/gerbil/build.nix
+++ b/pkgs/development/compilers/gerbil/build.nix
@@ -106,7 +106,7 @@ stdenv.mkDerivation rec {
     ./install.sh
     (cd $out/bin ; ln -s ../gerbil/bin/* .)
     runHook postInstall
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     libgerbil="$(realpath "$out/gerbil/lib/libgerbil.so")"
     install_name_tool -id "$libgerbil" "$libgerbil"
   '';
diff --git a/pkgs/development/compilers/gforth/boot-forth.nix b/pkgs/development/compilers/gforth/boot-forth.nix
index 657847164bb0..9a4d676f5130 100644
--- a/pkgs/development/compilers/gforth/boot-forth.nix
+++ b/pkgs/development/compilers/gforth/boot-forth.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
 
   buildInputs = [ m4 ];
 
-  configureFlags = lib.optionals stdenv.isDarwin [ "--build=x86_64-apple-darwin" ];
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "--build=x86_64-apple-darwin" ];
 
   meta = {
     description = "Forth implementation of the GNU project (outdated version used to bootstrap)";
diff --git a/pkgs/development/compilers/gforth/default.nix b/pkgs/development/compilers/gforth/default.nix
index 56d89fd628f2..6b68f7b47c5c 100644
--- a/pkgs/development/compilers/gforth/default.nix
+++ b/pkgs/development/compilers/gforth/default.nix
@@ -29,7 +29,7 @@ in stdenv.mkDerivation rec {
 
   configureFlags = [
     "--with-lispdir=${lispDir}"
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     "--build=x86_64-apple-darwin"
   ];
 
@@ -41,7 +41,7 @@ in stdenv.mkDerivation rec {
     description = "Forth implementation of the GNU project";
     homepage = "https://github.com/forthy42/gforth";
     license = lib.licenses.gpl3;
-    broken = stdenv.isDarwin && stdenv.isAarch64; # segfault when running ./gforthmi
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64; # segfault when running ./gforthmi
     platforms = lib.platforms.all;
   };
 }
diff --git a/pkgs/development/compilers/ghc/8.10.7-binary.nix b/pkgs/development/compilers/ghc/8.10.7-binary.nix
index a4602c9a645c..20ad72462401 100644
--- a/pkgs/development/compilers/ghc/8.10.7-binary.nix
+++ b/pkgs/development/compilers/ghc/8.10.7-binary.nix
@@ -199,7 +199,7 @@ stdenv.mkDerivation rec {
     # rcodesign is used to replace the signature instead of sigtool because it
     # supports setting the linker-signed flag, which will ensure future processing
     # of the binaries does not invalidate their signatures.
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ rcodesign ];
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ rcodesign ];
 
   # Set LD_LIBRARY_PATH or equivalent so that the programs running as part
   # of the bindist installer can find the libraries they expect.
@@ -245,14 +245,14 @@ stdenv.mkDerivation rec {
         ])
     # GHC has dtrace probes, which causes ld to try to open /usr/lib/libdtrace.dylib
     # during linking
-    + lib.optionalString stdenv.isDarwin (''
+    + lib.optionalString stdenv.hostPlatform.isDarwin (''
       export NIX_LDFLAGS+=" -no_dtrace_dof"
       # not enough room in the object files for the full path to libiconv :(
       for exe in $(find . -type f -executable); do
         isScript $exe && continue
         ln -fs ${libiconv}/lib/libiconv.dylib $(dirname $exe)/libiconv.dylib
         install_name_tool -change /usr/lib/libiconv.2.dylib @executable_path/libiconv.dylib -change /usr/local/lib/gcc/6/libgcc_s.1.dylib ${gcc.cc.lib}/lib/libgcc_s.1.dylib $exe
-    '' + lib.optionalString stdenv.isAarch64 ''
+    '' + lib.optionalString stdenv.hostPlatform.isAarch64 ''
         # Resign the binary and set the linker-signed flag. Ignore failures when the file is an object file.
         # Object files don’t have signatures, so ignoring the failures is harmless.
         rcodesign sign --code-signature-flags linker-signed $exe || true
@@ -274,7 +274,7 @@ stdenv.mkDerivation rec {
     ''
       find . -name integer-gmp.buildinfo \
           -exec sed -i "s@extra-lib-dirs: @extra-lib-dirs: ${gmp.out}/lib@" {} \;
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       find . -name base.buildinfo \
           -exec sed -i "s@extra-lib-dirs: @extra-lib-dirs: ${libiconv}/lib@" {} \;
     '' +
@@ -285,7 +285,7 @@ stdenv.mkDerivation rec {
           -exec sed -i "s@FFI_LIB_DIR@FFI_LIB_DIR ${numactl.out}/lib@g" {} \;
     '' +
     # Rename needed libraries and binaries, fix interpreter
-    lib.optionalString stdenv.isLinux ''
+    lib.optionalString stdenv.hostPlatform.isLinux ''
       find . -type f -executable -exec patchelf \
           --interpreter ${stdenv.cc.bintools.dynamicLinker} {} \;
     '' +
@@ -314,7 +314,7 @@ stdenv.mkDerivation rec {
     "--with-gmp-includes=${lib.getDev gmp}/include"
     # Note `--with-gmp-libraries` does nothing for GHC bindists:
     # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/6124
-  ] ++ lib.optional stdenv.isDarwin "--with-gcc=${./gcc-clang-wrapper.sh}"
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "--with-gcc=${./gcc-clang-wrapper.sh}"
     # From: https://github.com/NixOS/nixpkgs/pull/43369/commits
     ++ lib.optional stdenv.hostPlatform.isMusl "--disable-ld-override";
 
@@ -349,7 +349,7 @@ stdenv.mkDerivation rec {
 
   # On Linux, use patchelf to modify the executables so that they can
   # find editline/gmp.
-  postFixup = lib.optionalString stdenv.isLinux
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux
     (if stdenv.hostPlatform.isAarch64 then
       # Keep rpath as small as possible on aarch64 for patchelf#244.  All Elfs
       # are 2 directories deep from $out/lib, so pooling symlinks there makes
@@ -377,7 +377,7 @@ stdenv.mkDerivation rec {
           patchelf --set-rpath "${libPath}:$(patchelf --print-rpath $p)" $p
         fi
       done
-    '') + lib.optionalString stdenv.isDarwin ''
+    '') + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # not enough room in the object files for the full path to libiconv :(
     for exe in $(find "$out" -type f -executable); do
       isScript $exe && continue
diff --git a/pkgs/development/compilers/ghc/8.10.7.nix b/pkgs/development/compilers/ghc/8.10.7.nix
index a6694e2e99c9..d0f9130ff3fe 100644
--- a/pkgs/development/compilers/ghc/8.10.7.nix
+++ b/pkgs/development/compilers/ghc/8.10.7.nix
@@ -69,7 +69,7 @@ assert !enableIntegerSimple -> gmp != null;
 assert (stdenv.targetPlatform != stdenv.hostPlatform) -> !enableHaddockProgram;
 
 let
-  libffi_name = if stdenv.isDarwin && stdenv.isAarch64 then "libffi" else "libffi_3_3";
+  libffi_name = if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 then "libffi" else "libffi_3_3";
   inherit (stdenv) buildPlatform hostPlatform targetPlatform;
 
   inherit (bootPkgs) ghc;
@@ -253,7 +253,7 @@ stdenv.mkDerivation (rec {
       url = "https://gitlab.haskell.org/ghc/ghc/-/commit/8f7dd5710b80906ea7a3e15b7bb56a883a49fed8.patch";
       hash = "sha256-C636Nq2U8YOG/av7XQmG3L1rU0bmC9/7m7Hty5pm5+s=";
     })
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # Make Block.h compile with c++ compilers. Remove with the next release
     (fetchpatch {
       url = "https://gitlab.haskell.org/ghc/ghc/-/commit/97d0b0a367e4c6a52a17c3299439ac7de129da24.patch";
@@ -302,9 +302,9 @@ stdenv.mkDerivation (rec {
 
     echo -n "${buildMK}" > mk/build.mk
     sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     export NIX_LDFLAGS+=" -rpath $out/lib/ghc-${version}"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     export NIX_LDFLAGS+=" -no_dtrace_dof"
 
     # GHC tries the host xattr /usr/bin/xattr by default which fails since it expects python to be 2.7
@@ -366,7 +366,7 @@ stdenv.mkDerivation (rec {
   nativeBuildInputs = [
     perl autoreconfHook autoconf automake m4 python3
     ghc bootPkgs.alex bootPkgs.happy bootPkgs.hscolour
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     autoSignDarwinBinariesHook
   ] ++ lib.optionals enableDocs [
     sphinx
diff --git a/pkgs/development/compilers/ghc/8.6.5-binary.nix b/pkgs/development/compilers/ghc/8.6.5-binary.nix
index d66f47b661a5..eef0cba9f00b 100644
--- a/pkgs/development/compilers/ghc/8.6.5-binary.nix
+++ b/pkgs/development/compilers/ghc/8.6.5-binary.nix
@@ -26,7 +26,7 @@ let
   libEnvVar = lib.optionalString stdenv.hostPlatform.isDarwin "DY"
     + "LD_LIBRARY_PATH";
 
-  glibcDynLinker = assert stdenv.isLinux;
+  glibcDynLinker = assert stdenv.hostPlatform.isLinux;
     if stdenv.hostPlatform.libc == "glibc" then
        # Could be stdenv.cc.bintools.dynamicLinker, keeping as-is to avoid rebuild.
        ''"$(cat $NIX_CC/nix-support/dynamic-linker)"''
@@ -88,7 +88,7 @@ stdenv.mkDerivation rec {
   postUnpack =
     # GHC has dtrace probes, which causes ld to try to open /usr/lib/libdtrace.dylib
     # during linking
-    lib.optionalString stdenv.isDarwin ''
+    lib.optionalString stdenv.hostPlatform.isDarwin ''
       export NIX_LDFLAGS+=" -no_dtrace_dof"
       # not enough room in the object files for the full path to libiconv :(
       for exe in $(find . -type f -executable); do
@@ -110,15 +110,15 @@ stdenv.mkDerivation rec {
     ''
       find . -name integer-gmp.buildinfo \
           -exec sed -i "s@extra-lib-dirs: @extra-lib-dirs: ${gmp.out}/lib@" {} \;
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       find . -name base.buildinfo \
           -exec sed -i "s@extra-lib-dirs: @extra-lib-dirs: ${libiconv}/lib@" {} \;
     '' +
     # Rename needed libraries and binaries, fix interpreter
-    lib.optionalString stdenv.isLinux ''
+    lib.optionalString stdenv.hostPlatform.isLinux ''
       find . -type f -perm -0100 \
           -exec patchelf \
-          --replace-needed libncurses${lib.optionalString stdenv.is64bit "w"}.so.5 libncurses.so \
+          --replace-needed libncurses${lib.optionalString stdenv.hostPlatform.is64bit "w"}.so.5 libncurses.so \
           ${ # This isn't required for x86_64-linux where we use ncurses6
              lib.optionalString (!useNcurses6) "--replace-needed libtinfo.so libtinfo.so.5"
            } \
@@ -142,7 +142,7 @@ stdenv.mkDerivation rec {
     "--with-gmp-includes=${lib.getDev gmp}/include"
     # Note `--with-gmp-libraries` does nothing for GHC bindists:
     # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/6124
-  ] ++ lib.optional stdenv.isDarwin "--with-gcc=${./gcc-clang-wrapper.sh}"
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "--with-gcc=${./gcc-clang-wrapper.sh}"
     ++ lib.optional stdenv.hostPlatform.isMusl "--disable-ld-override";
 
   # No building is necessary, but calling make without flags ironically
@@ -160,14 +160,14 @@ stdenv.mkDerivation rec {
 
   # On Linux, use patchelf to modify the executables so that they can
   # find editline/gmp.
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     for p in $(find "$out" -type f -executable); do
       if isELF "$p"; then
         echo "Patchelfing $p"
         patchelf --set-rpath "${libPath}:$(patchelf --print-rpath $p)" $p
       fi
     done
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # not enough room in the object files for the full path to libiconv :(
     for exe in $(find "$out" -type f -executable); do
       isScript $exe && continue
diff --git a/pkgs/development/compilers/ghc/9.2.4-binary.nix b/pkgs/development/compilers/ghc/9.2.4-binary.nix
index 920b63ce4eab..e8c6d83ea82f 100644
--- a/pkgs/development/compilers/ghc/9.2.4-binary.nix
+++ b/pkgs/development/compilers/ghc/9.2.4-binary.nix
@@ -222,7 +222,7 @@ stdenv.mkDerivation rec {
         ])
     # GHC has dtrace probes, which causes ld to try to open /usr/lib/libdtrace.dylib
     # during linking
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       export NIX_LDFLAGS+=" -no_dtrace_dof"
       # not enough room in the object files for the full path to libiconv :(
       for exe in $(find . -type f -executable); do
@@ -247,7 +247,7 @@ stdenv.mkDerivation rec {
       # we need to modify the package db directly for hadrian bindists
       find . -name 'ghc-bignum*.conf' \
           -exec sed -e '/^[a-z-]*library-dirs/a \    ${lib.getLib gmpUsed}/lib' -i {} \;
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # we need to modify the package db directly for hadrian bindists
       # (all darwin bindists are hadrian-based for 9.2.2)
       find . -name 'base*.conf' \
@@ -266,7 +266,7 @@ stdenv.mkDerivation rec {
           -exec sed -i "s@FFI_LIB_DIR@FFI_LIB_DIR ${numactl.out}/lib@g" {} \;
     '' +
     # Rename needed libraries and binaries, fix interpreter
-    lib.optionalString stdenv.isLinux ''
+    lib.optionalString stdenv.hostPlatform.isLinux ''
       find . -type f -executable -exec patchelf \
           --interpreter ${stdenv.cc.bintools.dynamicLinker} {} \;
     '';
@@ -281,7 +281,7 @@ stdenv.mkDerivation rec {
     "--with-gmp-includes=${lib.getDev gmpUsed}/include"
     # Note `--with-gmp-libraries` does nothing for GHC bindists:
     # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/6124
-  ] ++ lib.optional stdenv.isDarwin "--with-gcc=${./gcc-clang-wrapper.sh}"
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "--with-gcc=${./gcc-clang-wrapper.sh}"
     # From: https://github.com/NixOS/nixpkgs/pull/43369/commits
     ++ lib.optional stdenv.hostPlatform.isMusl "--disable-ld-override";
 
@@ -316,7 +316,7 @@ stdenv.mkDerivation rec {
 
   # On Linux, use patchelf to modify the executables so that they can
   # find editline/gmp.
-  postFixup = lib.optionalString (stdenv.isLinux && !(binDistUsed.isStatic or false))
+  postFixup = lib.optionalString (stdenv.hostPlatform.isLinux && !(binDistUsed.isStatic or false))
     (if stdenv.hostPlatform.isAarch64 then
       # Keep rpath as small as possible on aarch64 for patchelf#244.  All Elfs
       # are 2 directories deep from $out/lib, so pooling symlinks there makes
@@ -344,7 +344,7 @@ stdenv.mkDerivation rec {
           patchelf --set-rpath "${libPath}:$(patchelf --print-rpath $p)" $p
         fi
       done
-    '') + lib.optionalString stdenv.isDarwin ''
+    '') + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # not enough room in the object files for the full path to libiconv :(
     for exe in $(find "$out" -type f -executable); do
       isScript $exe && continue
diff --git a/pkgs/development/compilers/ghc/9.6.3-binary.nix b/pkgs/development/compilers/ghc/9.6.3-binary.nix
index d67e9f47ac48..6d8f195bb9d3 100644
--- a/pkgs/development/compilers/ghc/9.6.3-binary.nix
+++ b/pkgs/development/compilers/ghc/9.6.3-binary.nix
@@ -218,7 +218,7 @@ stdenv.mkDerivation rec {
         ])
     # GHC has dtrace probes, which causes ld to try to open /usr/lib/libdtrace.dylib
     # during linking
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       export NIX_LDFLAGS+=" -no_dtrace_dof"
       # not enough room in the object files for the full path to libiconv :(
       for exe in $(find . -type f -executable); do
@@ -235,7 +235,7 @@ stdenv.mkDerivation rec {
           -exec sed -e '/^[a-z-]*library-dirs/a \    ${lib.getLib gmpUsed}/lib' -i {} \;
     ''
     # Similar for iconv and libffi on darwin
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       find . -name 'base*.conf' \
           -exec sed -e '/^[a-z-]*library-dirs/a \    ${lib.getLib libiconv}/lib' -i {} \;
 
@@ -252,7 +252,7 @@ stdenv.mkDerivation rec {
           -exec sed -i "s@FFI_LIB_DIR@FFI_LIB_DIR ${numactl.out}/lib@g" {} \;
     '' +
     # Rename needed libraries and binaries, fix interpreter
-    lib.optionalString stdenv.isLinux ''
+    lib.optionalString stdenv.hostPlatform.isLinux ''
       find . -type f -executable -exec patchelf \
           --interpreter ${stdenv.cc.bintools.dynamicLinker} {} \;
     '';
@@ -267,7 +267,7 @@ stdenv.mkDerivation rec {
 
   configurePlatforms = [ ];
   configureFlags =
-    lib.optional stdenv.isDarwin "--with-gcc=${./gcc-clang-wrapper.sh}"
+    lib.optional stdenv.hostPlatform.isDarwin "--with-gcc=${./gcc-clang-wrapper.sh}"
     # From: https://github.com/NixOS/nixpkgs/pull/43369/commits
     ++ lib.optional stdenv.hostPlatform.isMusl "--disable-ld-override";
 
@@ -308,7 +308,7 @@ stdenv.mkDerivation rec {
 
   # On Linux, use patchelf to modify the executables so that they can
   # find editline/gmp.
-  postFixup = lib.optionalString (stdenv.isLinux && !(binDistUsed.isStatic or false))
+  postFixup = lib.optionalString (stdenv.hostPlatform.isLinux && !(binDistUsed.isStatic or false))
     (if stdenv.hostPlatform.isAarch64 then
       # Keep rpath as small as possible on aarch64 for patchelf#244.  All Elfs
       # are 2 directories deep from $out/lib, so pooling symlinks there makes
@@ -336,7 +336,7 @@ stdenv.mkDerivation rec {
           patchelf --set-rpath "${libPath}:$(patchelf --print-rpath $p)" $p
         fi
       done
-    '') + lib.optionalString stdenv.isDarwin ''
+    '') + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # not enough room in the object files for the full path to libiconv :(
     for exe in $(find "$out" -type f -executable); do
       isMachO $exe || continue
diff --git a/pkgs/development/compilers/ghc/common-hadrian.nix b/pkgs/development/compilers/ghc/common-hadrian.nix
index b6d4d7236fe6..31d1e52ea95b 100644
--- a/pkgs/development/compilers/ghc/common-hadrian.nix
+++ b/pkgs/development/compilers/ghc/common-hadrian.nix
@@ -368,11 +368,11 @@ stdenv.mkDerivation ({
     # LLVM backend on Darwin needs clang: https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/codegens.html#llvm-code-generator-fllvm
     export CLANG="${buildTargetLlvmPackages.clang}/bin/${buildTargetLlvmPackages.clang.targetPrefix}clang"
   '' +
-  lib.optionalString (stdenv.isLinux && hostPlatform.libc == "glibc") ''
+  lib.optionalString (stdenv.hostPlatform.isLinux && hostPlatform.libc == "glibc") ''
     export LOCALE_ARCHIVE="${glibcLocales}/lib/locale/locale-archive"
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     export NIX_LDFLAGS+=" -rpath $out/lib/ghc-${version}"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     export NIX_LDFLAGS+=" -no_dtrace_dof"
 
     # GHC tries the host xattr /usr/bin/xattr by default which fails since it expects python to be 2.7
@@ -476,7 +476,7 @@ stdenv.mkDerivation ({
     autoconf automake m4
     # Python is used in a few scripts invoked by hadrian to generate e.g. rts headers.
     python3
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     autoSignDarwinBinariesHook
   ] ++ lib.optionals enableDocs [
     sphinx
diff --git a/pkgs/development/compilers/ghc/common-make-native-bignum.nix b/pkgs/development/compilers/ghc/common-make-native-bignum.nix
index 2b23cd75a0ed..f6b6c33e9f9f 100644
--- a/pkgs/development/compilers/ghc/common-make-native-bignum.nix
+++ b/pkgs/development/compilers/ghc/common-make-native-bignum.nix
@@ -309,13 +309,13 @@ stdenv.mkDerivation (rec {
   ''
   + lib.optionalString (lib.versionOlder version "9.2" || lib.versionAtLeast version "9.4") ''
     sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
-  '' + lib.optionalString (stdenv.isLinux && hostPlatform.libc == "glibc") ''
+  '' + lib.optionalString (stdenv.hostPlatform.isLinux && hostPlatform.libc == "glibc") ''
     export LOCALE_ARCHIVE="${glibcLocales}/lib/locale/locale-archive"
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     export NIX_LDFLAGS+=" -rpath $out/lib/ghc-${version}"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     export NIX_LDFLAGS+=" -no_dtrace_dof"
-  '' + lib.optionalString (stdenv.isDarwin && lib.versionAtLeast version "9.2") ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionAtLeast version "9.2") ''
 
     # GHC tries the host xattr /usr/bin/xattr by default which fails since it expects python to be 2.7
     export XATTR=${lib.getBin xattr}/bin/xattr
@@ -383,11 +383,11 @@ stdenv.mkDerivation (rec {
   nativeBuildInputs = [
     perl autoconf automake m4 python3
     ghc bootPkgs.alex bootPkgs.happy bootPkgs.hscolour
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     autoSignDarwinBinariesHook
   ] ++ lib.optionals enableDocs [
     sphinx
-  ] ++ lib.optionals (stdenv.isDarwin && lib.versions.majorMinor version == "9.0") [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && lib.versions.majorMinor version == "9.0") [
     # TODO(@sternenseemann): backport addition of XATTR env var like
     # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/6447
     xattr
diff --git a/pkgs/development/compilers/ghcjs/8.10/default.nix b/pkgs/development/compilers/ghcjs/8.10/default.nix
index 9a648f838406..aea58c62b6d1 100644
--- a/pkgs/development/compilers/ghcjs/8.10/default.nix
+++ b/pkgs/development/compilers/ghcjs/8.10/default.nix
@@ -74,7 +74,7 @@ in stdenv.mkDerivation {
       xorg.lndir
       gmp
       pkg-config
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       gcc # https://github.com/ghcjs/ghcjs/issues/663
     ];
     dontConfigure = true;
diff --git a/pkgs/development/compilers/gleam/default.nix b/pkgs/development/compilers/gleam/default.nix
index 075088306de6..279136ac60e2 100644
--- a/pkgs/development/compilers/gleam/default.nix
+++ b/pkgs/development/compilers/gleam/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ git pkg-config ];
 
   buildInputs = [ openssl ] ++
-    lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+    lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
   cargoHash = "sha256-0Vtf9UXLPW5HuqNIAGNyqIXCMTITdG7PuFdw4H4v6a4=";
 
diff --git a/pkgs/development/compilers/go/1.21.nix b/pkgs/development/compilers/go/1.21.nix
index 7c8f1fbd9cde..a4cb04351031 100644
--- a/pkgs/development/compilers/go/1.21.nix
+++ b/pkgs/development/compilers/go/1.21.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   strictDeps = true;
   buildInputs = [ ]
-    ++ lib.optionals stdenv.isLinux [ stdenv.cc.libc.out ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ stdenv.cc.libc.out ]
     ++ lib.optionals (stdenv.hostPlatform.libc == "glibc") [ stdenv.cc.libc.static ];
 
   depsTargetTargetPropagated = lib.optionals stdenv.targetPlatform.isDarwin [ Foundation Security xcbuild ];
diff --git a/pkgs/development/compilers/go/1.22.nix b/pkgs/development/compilers/go/1.22.nix
index 4060a6cf6975..afda23ba96d8 100644
--- a/pkgs/development/compilers/go/1.22.nix
+++ b/pkgs/development/compilers/go/1.22.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   strictDeps = true;
   buildInputs = [ ]
-    ++ lib.optionals stdenv.isLinux [ stdenv.cc.libc.out ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ stdenv.cc.libc.out ]
     ++ lib.optionals (stdenv.hostPlatform.libc == "glibc") [ stdenv.cc.libc.static ];
 
   depsTargetTargetPropagated = lib.optionals stdenv.targetPlatform.isDarwin [ Foundation Security xcbuild ];
diff --git a/pkgs/development/compilers/go/1.23.nix b/pkgs/development/compilers/go/1.23.nix
index d4486ff319e4..65c562389b9b 100644
--- a/pkgs/development/compilers/go/1.23.nix
+++ b/pkgs/development/compilers/go/1.23.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   strictDeps = true;
   buildInputs = [ ]
-    ++ lib.optionals stdenv.isLinux [ stdenv.cc.libc.out ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ stdenv.cc.libc.out ]
     ++ lib.optionals (stdenv.hostPlatform.libc == "glibc") [ stdenv.cc.libc.static ];
 
   depsTargetTargetPropagated = lib.optionals stdenv.targetPlatform.isDarwin [ Foundation Security xcbuild ];
diff --git a/pkgs/development/compilers/gprolog/default.nix b/pkgs/development/compilers/gprolog/default.nix
index 6868ca9f8d8f..3cd5c1bcfa4c 100644
--- a/pkgs/development/compilers/gprolog/default.nix
+++ b/pkgs/development/compilers/gprolog/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-ZwZCtDwPqifr1olh77F+vnB2iPkbaAlWbd1gYTlRLAE=";
   };
 
-  hardeningDisable = lib.optional stdenv.isi686 "pic";
+  hardeningDisable = lib.optional stdenv.hostPlatform.isi686 "pic";
 
   patchPhase = ''
     sed -i -e "s|/tmp/make.log|$TMPDIR/make.log|g" src/Pl2Wam/check_boot
diff --git a/pkgs/development/compilers/graalvm/community-edition/buildGraalvm.nix b/pkgs/development/compilers/graalvm/community-edition/buildGraalvm.nix
index 83d60202a4fc..04f45c1ccddf 100644
--- a/pkgs/development/compilers/graalvm/community-edition/buildGraalvm.nix
+++ b/pkgs/development/compilers/graalvm/community-edition/buildGraalvm.nix
@@ -18,12 +18,12 @@
 , zlib
   # extra params
 , extraCLibs ? [ ]
-, gtkSupport ? stdenv.isLinux
+, gtkSupport ? stdenv.hostPlatform.isLinux
 , useMusl ? false
 , ...
 } @ args:
 
-assert useMusl -> stdenv.isLinux;
+assert useMusl -> stdenv.hostPlatform.isLinux;
 let
   extraArgs = builtins.removeAttrs args [
     "lib"
@@ -51,7 +51,7 @@ let
     "meta"
   ];
 
-  cLibs = lib.optionals stdenv.isLinux (
+  cLibs = lib.optionals stdenv.hostPlatform.isLinux (
     [ glibc zlib.static ]
     ++ lib.optionals (!useMusl) [ glibc.static ]
     ++ lib.optionals useMusl [ musl ]
@@ -86,7 +86,7 @@ let
       #
       # We therefor use --strip-components=1 vs 3 depending on the platform.
       tar xf "$src" -C "$out" --strip-components=${
-        if stdenv.isLinux then "1" else "3"
+        if stdenv.hostPlatform.isLinux then "1" else "3"
       }
 
       # Sanity check
@@ -104,12 +104,12 @@ let
     dontStrip = true;
 
     nativeBuildInputs = [ unzip makeWrapper ]
-      ++ lib.optional stdenv.isLinux autoPatchelfHook;
+      ++ lib.optional stdenv.hostPlatform.isLinux autoPatchelfHook;
 
     propagatedBuildInputs = [ setJavaClassPath zlib ]
-      ++ lib.optional stdenv.isDarwin darwin.apple_sdk_11_0.frameworks.Foundation;
+      ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk_11_0.frameworks.Foundation;
 
-    buildInputs = lib.optionals stdenv.isLinux [
+    buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
       alsa-lib # libasound.so wanted by lib/libjsound.so
       fontconfig
       stdenv.cc.cc.lib # libstdc++.so.6
@@ -136,7 +136,7 @@ let
         ${toString (map (l: "--add-flags '-H:CLibraryPath=${l}/lib'") cLibs)}
     '';
 
-    preFixup = lib.optionalString (stdenv.isLinux) ''
+    preFixup = lib.optionalString (stdenv.hostPlatform.isLinux) ''
       for bin in $(find "$out/bin" -executable -type f); do
         wrapProgram "$bin" --prefix LD_LIBRARY_PATH : "${runtimeLibraryPath}"
       done
@@ -147,7 +147,7 @@ let
       runHook preInstallCheck
 
       ${# broken in darwin
-      lib.optionalString stdenv.isLinux ''
+      lib.optionalString stdenv.hostPlatform.isLinux ''
         echo "Testing Jshell"
         echo '1 + 1' | $out/bin/jshell
       ''}
@@ -172,14 +172,14 @@ let
       ./helloworld | fgrep 'Hello World'
 
       ${# -H:+StaticExecutableWithDynamicLibC is only available in Linux
-      lib.optionalString (stdenv.isLinux && !useMusl) ''
+      lib.optionalString (stdenv.hostPlatform.isLinux && !useMusl) ''
         echo "Ahead-Of-Time compilation with -H:+StaticExecutableWithDynamicLibC"
         $out/bin/native-image -H:+UnlockExperimentalVMOptions -H:+StaticExecutableWithDynamicLibC -march=compatibility $extraNativeImageArgs HelloWorld
         ./helloworld | fgrep 'Hello World'
       ''}
 
       ${# --static is only available in Linux
-      lib.optionalString (stdenv.isLinux && useMusl) ''
+      lib.optionalString (stdenv.hostPlatform.isLinux && useMusl) ''
         echo "Ahead-Of-Time compilation with --static and --libc=musl"
         $out/bin/native-image $extraNativeImageArgs -march=compatibility --libc=musl --static HelloWorld
         ./helloworld | fgrep 'Hello World'
diff --git a/pkgs/development/compilers/graalvm/community-edition/buildGraalvmProduct.nix b/pkgs/development/compilers/graalvm/community-edition/buildGraalvmProduct.nix
index 907441ff68c4..2c8220d89a0a 100644
--- a/pkgs/development/compilers/graalvm/community-edition/buildGraalvmProduct.nix
+++ b/pkgs/development/compilers/graalvm/community-edition/buildGraalvmProduct.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation ({
   pname = product;
 
   nativeBuildInputs = [ makeWrapper ]
-    ++ lib.optional stdenv.isLinux autoPatchelfHook
+    ++ lib.optional stdenv.hostPlatform.isLinux autoPatchelfHook
     ++ extraNativeBuildInputs;
 
   buildInputs = [
@@ -41,7 +41,7 @@ stdenv.mkDerivation ({
     zlib
     libxcrypt-legacy # libcrypt.so.1 (default is .2 now)
   ]
-  ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Foundation
+  ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Foundation
   ++ extraBuildInputs;
 
   unpackPhase = ''
diff --git a/pkgs/development/compilers/graalvm/community-edition/default.nix b/pkgs/development/compilers/graalvm/community-edition/default.nix
index bfc9c729689c..c546d65ef02c 100644
--- a/pkgs/development/compilers/graalvm/community-edition/default.nix
+++ b/pkgs/development/compilers/graalvm/community-edition/default.nix
@@ -5,7 +5,7 @@
 lib.makeScope pkgs.newScope (self:
 {
   stdenv =
-    if pkgs.stdenv.isDarwin then
+    if pkgs.stdenv.hostPlatform.isDarwin then
       pkgs.darwin.apple_sdk_11_0.stdenv
     else
       pkgs.stdenv;
diff --git a/pkgs/development/compilers/graalvm/community-edition/truffleruby/default.nix b/pkgs/development/compilers/graalvm/community-edition/truffleruby/default.nix
index 95e9c56fc23c..da971347652e 100644
--- a/pkgs/development/compilers/graalvm/community-edition/truffleruby/default.nix
+++ b/pkgs/development/compilers/graalvm/community-edition/truffleruby/default.nix
@@ -17,7 +17,7 @@ graalvmCEPackages.buildGraalvmProduct {
     openssl
   ];
 
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf $out/lib/mri/openssl.so \
       --replace-needed libssl.so.10 libssl.so \
       --replace-needed libcrypto.so.10 libcrypto.so
@@ -31,7 +31,7 @@ graalvmCEPackages.buildGraalvmProduct {
     export LC_ALL=C
     $out/bin/ruby -e 'puts(1 + 1)'
     ${# broken in darwin with sandbox enabled
-      lib.optionalString stdenv.isLinux ''
+      lib.optionalString stdenv.hostPlatform.isLinux ''
       echo '1 + 1' | $out/bin/irb
     ''}
   '';
diff --git a/pkgs/development/compilers/halide/default.nix b/pkgs/development/compilers/halide/default.nix
index 738ecc81a156..d34ee3af9163 100644
--- a/pkgs/development/compilers/halide/default.nix
+++ b/pkgs/development/compilers/halide/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
   # Note: on x86_64-darwin, clang fails to find AvailabilityVersions.h, so we remove it.
   # Halide uses AvailabilityVersions.h and TargetConditionals.h to determine whether
   # ::aligned_alloc is available. For us, it isn't.
-  + lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) ''
+  + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) ''
     substituteInPlace 'src/runtime/HalideBuffer.h' \
       --replace '#ifdef __APPLE__
     #include <AvailabilityVersions.h>
@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
     libjpeg
     eigen
     openblas
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     mesa
     libGL
   ];
diff --git a/pkgs/development/compilers/haxe/default.nix b/pkgs/development/compilers/haxe/default.nix
index 78e5770cc68e..4613b90113ef 100644
--- a/pkgs/development/compilers/haxe/default.nix
+++ b/pkgs/development/compilers/haxe/default.nix
@@ -65,7 +65,7 @@ let
         ]
         ++ (if lib.versionAtLeast version "4.3" then [ pcre2 ] else [ pcre ])
         ++ lib.optional (lib.versionAtLeast version "4.1") mbedtls_2
-        ++ lib.optional (lib.versionAtLeast version "4.1" && stdenv.isDarwin) Security
+        ++ lib.optional (lib.versionAtLeast version "4.1" && stdenv.hostPlatform.isDarwin) Security
         ++ ocamlDependencies version;
 
       src = fetchFromGitHub {
diff --git a/pkgs/development/compilers/idris2/idris2.nix b/pkgs/development/compilers/idris2/idris2.nix
index 2d5ec9a28368..6f39eea61868 100644
--- a/pkgs/development/compilers/idris2/idris2.nix
+++ b/pkgs/development/compilers/idris2/idris2.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     makeWrapper
     clang
     platformChez
-  ] ++ lib.optionals stdenv.isDarwin [ zsh ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ zsh ];
   buildInputs = [
     platformChez
     gmp
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
     patchShebangs --build tests
   '';
 
-  makeFlags = [ "PREFIX=$(out)" ] ++ lib.optional stdenv.isDarwin "OS=";
+  makeFlags = [ "PREFIX=$(out)" ] ++ lib.optional stdenv.hostPlatform.isDarwin "OS=";
 
   # The name of the main executable of pkgs.chez is `scheme`
   buildFlags = [
diff --git a/pkgs/development/compilers/idris2/tests.nix b/pkgs/development/compilers/idris2/tests.nix
index bb5cd140c90c..b4193286d49c 100644
--- a/pkgs/development/compilers/idris2/tests.nix
+++ b/pkgs/development/compilers/idris2/tests.nix
@@ -28,7 +28,7 @@ let
         # is not the case with pure nix environments. Thus, we need to include zsh
         # when we build for darwin in tests. While this is impure, this is also what
         # we find in real darwin hosts.
-        nativeBuildInputs = lib.optionals stdenv.isDarwin [ zsh ];
+        nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ zsh ];
       }
       ''
         set -eo pipefail
diff --git a/pkgs/development/compilers/inform7/default.nix b/pkgs/development/compilers/inform7/default.nix
index cb464e3484c2..b4b97af52417 100644
--- a/pkgs/development/compilers/inform7/default.nix
+++ b/pkgs/development/compilers/inform7/default.nix
@@ -29,6 +29,6 @@ in stdenv.mkDerivation {
     maintainers = with maintainers; [ mbbx6spp ];
     platforms = platforms.unix;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = (stdenv.isDarwin && stdenv.isAarch64) || (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) || (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   };
 }
diff --git a/pkgs/development/compilers/ispc/default.nix b/pkgs/development/compilers/ispc/default.nix
index b8c48c5c6a01..2aa173fdde24 100644
--- a/pkgs/development/compilers/ispc/default.nix
+++ b/pkgs/development/compilers/ispc/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchFromGitHub
 , cmake, which, m4, python3, bison, flex, llvmPackages, ncurses, xcode, tbb
   # the default test target is sse4, but that is not supported by all Hydra agents
-, testedTargets ? if stdenv.isAarch64 || stdenv.isAarch32 then [ "neon-i32x4" ] else [ "sse2-i32x4" ]
+, testedTargets ? if stdenv.hostPlatform.isAarch64 || stdenv.hostPlatform.isAarch32 then [ "neon-i32x4" ] else [ "sse2-i32x4" ]
 }:
 
 stdenv.mkDerivation rec {
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-1Ns8w34fXgYrSu3XE89uowjaVoW3MOgKYV1Jb/XRj1Q=";
   };
 
-  nativeBuildInputs = [ cmake which m4 bison flex python3 llvmPackages.libllvm.dev tbb ] ++ lib.lists.optionals stdenv.isDarwin [ xcode ];
+  nativeBuildInputs = [ cmake which m4 bison flex python3 llvmPackages.libllvm.dev tbb ] ++ lib.lists.optionals stdenv.hostPlatform.isDarwin [ xcode ];
 
   buildInputs = with llvmPackages; [
     libllvm libclang openmp ncurses
@@ -61,9 +61,9 @@ stdenv.mkDerivation rec {
     "-DCLANGPP_EXECUTABLE=${llvmPackages.clang}/bin/clang++"
     "-DISPC_INCLUDE_EXAMPLES=OFF"
     "-DISPC_INCLUDE_UTILS=OFF"
-    ("-DARM_ENABLED=" + (if stdenv.isAarch64 || stdenv.isAarch32 then "TRUE" else "FALSE"))
-    ("-DX86_ENABLED=" + (if stdenv.isx86_64 || stdenv.isx86_32 then "TRUE" else "FALSE"))
-  ] ++ lib.lists.optionals stdenv.isDarwin [
+    ("-DARM_ENABLED=" + (if stdenv.hostPlatform.isAarch64 || stdenv.hostPlatform.isAarch32 then "TRUE" else "FALSE"))
+    ("-DX86_ENABLED=" + (if stdenv.hostPlatform.isx86_64 || stdenv.hostPlatform.isx86_32 then "TRUE" else "FALSE"))
+  ] ++ lib.lists.optionals stdenv.hostPlatform.isDarwin [
     "-DISPC_MACOS_SDK_PATH=${xcode}/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"
   ];
 
diff --git a/pkgs/development/compilers/jetbrains-jdk/17.nix b/pkgs/development/compilers/jetbrains-jdk/17.nix
index 76d4079baafb..a868a441ba4c 100644
--- a/pkgs/development/compilers/jetbrains-jdk/17.nix
+++ b/pkgs/development/compilers/jetbrains-jdk/17.nix
@@ -147,7 +147,7 @@ openjdk17.overrideAttrs (oldAttrs: rec {
     inherit (openjdk17.meta) license platforms mainProgram;
     maintainers = with maintainers; [ edwtjo ];
 
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 
   passthru = oldAttrs.passthru // {
diff --git a/pkgs/development/compilers/jetbrains-jdk/default.nix b/pkgs/development/compilers/jetbrains-jdk/default.nix
index 59a6704e3103..77ac8e904d47 100644
--- a/pkgs/development/compilers/jetbrains-jdk/default.nix
+++ b/pkgs/development/compilers/jetbrains-jdk/default.nix
@@ -147,7 +147,7 @@ jdk.overrideAttrs (oldAttrs: rec {
     inherit (jdk.meta) license platforms mainProgram;
     maintainers = with maintainers; [ edwtjo ];
 
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 
   passthru = oldAttrs.passthru // {
diff --git a/pkgs/development/compilers/jetbrains-jdk/jcef.nix b/pkgs/development/compilers/jetbrains-jdk/jcef.nix
index 537133524a2c..9cda4fc51623 100644
--- a/pkgs/development/compilers/jetbrains-jdk/jcef.nix
+++ b/pkgs/development/compilers/jetbrains-jdk/jcef.nix
@@ -45,7 +45,7 @@
 , thrift
 }:
 
-assert !stdenv.isDarwin;
+assert !stdenv.hostPlatform.isDarwin;
 # I can't test darwin
 
 let
diff --git a/pkgs/development/compilers/jsonnet/default.nix b/pkgs/development/compilers/jsonnet/default.nix
index 8e723cdb8211..4dc7557d1379 100644
--- a/pkgs/development/compilers/jsonnet/default.nix
+++ b/pkgs/development/compilers/jsonnet/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-DUSE_SYSTEM_GTEST=ON"
     "-DBUILD_STATIC_LIBS=${if stdenv.hostPlatform.isStatic then "ON" else "OFF"}"
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     "-DBUILD_SHARED_BINARIES=${if stdenv.hostPlatform.isStatic then "OFF" else "ON"}"
   ];
 
diff --git a/pkgs/development/compilers/julia/generic-bin.nix b/pkgs/development/compilers/julia/generic-bin.nix
index 09a8c2bce3bf..fd78e6113850 100644
--- a/pkgs/development/compilers/julia/generic-bin.nix
+++ b/pkgs/development/compilers/julia/generic-bin.nix
@@ -24,14 +24,14 @@ let
     "REPL"
     # Test flaky
     "ccall"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # Test flaky on ofborg
     "FileWatching"
     # Test requires pbcopy
     "InteractiveUtils"
     # Test requires network access
     "Sockets"
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     # Test Failed at $out/share/julia/stdlib/v1.8/LinearAlgebra/test/blas.jl:702
     "LinearAlgebra/blas"
     # Test Failed at $out/share/julia/test/misc.jl:724
@@ -71,7 +71,7 @@ stdenv.mkDerivation {
         '@test_skip ca_roots_path() != bundled_ca_roots()'
   '';
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     autoPatchelfHook
     # https://github.com/JuliaLang/julia/blob/v1.9.0/NEWS.md#external-dependencies
     stdenv.cc.cc
diff --git a/pkgs/development/compilers/julia/generic.nix b/pkgs/development/compilers/julia/generic.nix
index e3360137ca74..53a5067e783a 100644
--- a/pkgs/development/compilers/julia/generic.nix
+++ b/pkgs/development/compilers/julia/generic.nix
@@ -53,10 +53,10 @@ stdenv.mkDerivation rec {
   makeFlags = [
     "prefix=$(out)"
     "USE_BINARYBUILDER=0"
-  ] ++ lib.optionals stdenv.isx86_64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isx86_64 [
     # https://github.com/JuliaCI/julia-buildkite/blob/main/utilities/build_envs.sh
     "JULIA_CPU_TARGET=generic;sandybridge,-xsaveopt,clone_all;haswell,-rdrnd,base(1);x86-64-v4,-rdrnd,base(1)"
-  ] ++ lib.optionals stdenv.isAarch64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isAarch64 [
     "JULIA_CPU_TARGET=generic;cortex-a57;thunderx2t99;carmel,clone_all;apple-m1,base(3);neoverse-512tvb,base(3)"
   ];
 
diff --git a/pkgs/development/compilers/kind2/default.nix b/pkgs/development/compilers/kind2/default.nix
index 617f86880363..a5a8585d020e 100644
--- a/pkgs/development/compilers/kind2/default.nix
+++ b/pkgs/development/compilers/kind2/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-KzoEh/kMKsHx9K3t1/uQZ7fdsZEM+v8UOft8JjEB1Zw=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Security
   ];
 
diff --git a/pkgs/development/compilers/ligo/default.nix b/pkgs/development/compilers/ligo/default.nix
index 8a76de022283..b472eb921cfa 100644
--- a/pkgs/development/compilers/ligo/default.nix
+++ b/pkgs/development/compilers/ligo/default.nix
@@ -113,7 +113,7 @@ ocamlPackages.buildDunePackage rec {
     seqes
     stdint
     tezt
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/compilers/llvm/common/compiler-rt/default.nix b/pkgs/development/compilers/llvm/common/compiler-rt/default.nix
index e43ff09931b8..a6d727739d27 100644
--- a/pkgs/development/compilers/llvm/common/compiler-rt/default.nix
+++ b/pkgs/development/compilers/llvm/common/compiler-rt/default.nix
@@ -68,7 +68,7 @@ stdenv.mkDerivation ({
   nativeBuildInputs = [ cmake ]
     ++ (lib.optional (lib.versionAtLeast release_version "15") ninja)
     ++ [ python3 libllvm.dev ]
-    ++ lib.optional stdenv.isDarwin xcbuild.xcrun;
+    ++ lib.optional stdenv.hostPlatform.isDarwin xcbuild.xcrun;
   buildInputs =
     lib.optional (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isRiscV) linuxHeaders
     ++ lib.optional (stdenv.hostPlatform.isFreeBSD) freebsd.include;
@@ -133,7 +133,7 @@ stdenv.mkDerivation ({
     # `COMPILER_RT_DEFAULT_TARGET_ONLY` does not apply to Darwin:
     # https://github.com/llvm/llvm-project/blob/27ef42bec80b6c010b7b3729ed0528619521a690/compiler-rt/cmake/base-config-ix.cmake#L153
     "-DCOMPILER_RT_ENABLE_IOS=OFF"
-  ]) ++ lib.optionals (lib.versionAtLeast version "19" && stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13") [
+  ]) ++ lib.optionals (lib.versionAtLeast version "19" && stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13") [
     "-DSANITIZER_MIN_OSX_VERSION=10.10"
   ] ++ lib.optionals (noSanitizers && lib.versionAtLeast release_version "19") [
     "-DCOMPILER_RT_BUILD_CTX_PROFILE=OFF"
@@ -146,10 +146,10 @@ stdenv.mkDerivation ({
   # can build this. If we didn't do it, basically the entire nixpkgs on Darwin would have an unfree dependency and we'd
   # get no binary cache for the entire platform. If you really find yourself wanting the TSAN, make this controllable by
   # a flag and turn the flag off during the stdenv build.
-  postPatch = lib.optionalString (!stdenv.isDarwin) ''
+  postPatch = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     substituteInPlace cmake/builtin-config-ix.cmake \
       --replace 'set(X86 i386)' 'set(X86 i386 i486 i586 i686)'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace cmake/config-ix.cmake \
       --replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
   '' + lib.optionalString (!haveLibc) ((lib.optionalString (lib.versionAtLeast release_version "18") ''
diff --git a/pkgs/development/compilers/llvm/common/default.nix b/pkgs/development/compilers/llvm/common/default.nix
index 689ea9f7cb7b..2a5d3c9dcdbc 100644
--- a/pkgs/development/compilers/llvm/common/default.nix
+++ b/pkgs/development/compilers/llvm/common/default.nix
@@ -1058,7 +1058,7 @@ let
               lib.optional
                 (
                   lib.versions.major metadata.release_version == "17"
-                  && stdenv.isDarwin
+                  && stdenv.hostPlatform.isDarwin
                   && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13"
                 )
                 # https://github.com/llvm/llvm-project/issues/64226
@@ -1073,7 +1073,7 @@ let
               lib.optional
                 (
                   lib.versionAtLeast metadata.release_version "18"
-                  && stdenv.isDarwin
+                  && stdenv.hostPlatform.isDarwin
                   && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13"
                 )
                 # https://github.com/llvm/llvm-project/issues/64226
diff --git a/pkgs/development/compilers/llvm/common/libcxx/default.nix b/pkgs/development/compilers/llvm/common/libcxx/default.nix
index 2893d012151d..17c687f88394 100644
--- a/pkgs/development/compilers/llvm/common/libcxx/default.nix
+++ b/pkgs/development/compilers/llvm/common/libcxx/default.nix
@@ -121,7 +121,7 @@ stdenv.mkDerivation (rec {
   '';
 
   nativeBuildInputs = [ cmake ninja python3 ]
-    ++ lib.optional stdenv.isDarwin fixDarwinDylibNames
+    ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames
     ++ lib.optional (cxxabi != null) lndir;
 
   buildInputs = [ cxxabi ]
diff --git a/pkgs/development/compilers/llvm/common/lld/default.nix b/pkgs/development/compilers/llvm/common/lld/default.nix
index 2c87d4cfa96f..d5c0f7cb3a09 100644
--- a/pkgs/development/compilers/llvm/common/lld/default.nix
+++ b/pkgs/development/compilers/llvm/common/lld/default.nix
@@ -33,7 +33,7 @@ let
       '(''${LLVM_MAIN_SRC_DIR}/' '('
     mkdir -p libunwind/include
     tar -xf "${libunwind.src}" --wildcards -C libunwind/include --strip-components=2 "libunwind-*/include/"
-  '' + lib.optionalString (lib.versions.major release_version == "13" && stdenv.isDarwin) ''
+  '' + lib.optionalString (lib.versions.major release_version == "13" && stdenv.hostPlatform.isDarwin) ''
     substituteInPlace MachO/CMakeLists.txt --replace \
       '(''${LLVM_MAIN_SRC_DIR}/' '(../'
   '';
diff --git a/pkgs/development/compilers/llvm/common/lldb.nix b/pkgs/development/compilers/llvm/common/lldb.nix
index d174570c1f34..4f679f4dcff1 100644
--- a/pkgs/development/compilers/llvm/common/lldb.nix
+++ b/pkgs/development/compilers/llvm/common/lldb.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation (rec {
 
   # LLDB expects to find the path to `bin` relative to `lib` on Darwin. It can’t be patched with the location of
   # the `lib` output because that would create a cycle between it and the `out` output.
-  outputs = [ "out" "dev" ] ++ lib.optionals (!stdenv.isDarwin) [ "lib" ];
+  outputs = [ "out" "dev" ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ "lib" ];
 
   sourceRoot = lib.optional (lib.versionAtLeast release_version "13") "${src.name}/${pname}";
 
@@ -87,7 +87,7 @@ stdenv.mkDerivation (rec {
     # libclang into the rpath of the lldb executables. By putting it into
     # buildInputs cc-wrapper will set up rpath correctly for us.
     (lib.getLib libclang)
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.libobjc
     darwin.apple_sdk.libs.xpc
     darwin.apple_sdk.frameworks.Foundation
@@ -123,9 +123,9 @@ stdenv.mkDerivation (rec {
     "-DLLVM_ENABLE_RTTI=OFF"
     "-DClang_DIR=${lib.getDev libclang}/lib/cmake"
     "-DLLVM_EXTERNAL_LIT=${lit}/bin/lit"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DLLDB_USE_SYSTEM_DEBUGSERVER=ON"
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     "-DLLDB_CODESIGN_IDENTITY=" # codesigning makes nondeterministic
   ] ++ lib.optionals (lib.versionAtLeast release_version "17") [
     "-DCLANG_RESOURCE_DIR=../../../../${libclang.lib}"
diff --git a/pkgs/development/compilers/llvm/common/llvm/default.nix b/pkgs/development/compilers/llvm/common/llvm/default.nix
index e39ba171373f..281a21ca1524 100644
--- a/pkgs/development/compilers/llvm/common/llvm/default.nix
+++ b/pkgs/development/compilers/llvm/common/llvm/default.nix
@@ -28,13 +28,13 @@
 , sysctl
 , buildLlvmTools
 , debugVersion ? false
-, doCheck ? !stdenv.isAarch32 && (if lib.versionOlder release_version "15" then stdenv.isLinux else true)
-  && (!stdenv.isx86_32 /* TODO: why */) && (!stdenv.hostPlatform.isMusl)
+, doCheck ? !stdenv.hostPlatform.isAarch32 && (if lib.versionOlder release_version "15" then stdenv.hostPlatform.isLinux else true)
+  && (!stdenv.hostPlatform.isx86_32 /* TODO: why */) && (!stdenv.hostPlatform.isMusl)
   && !(stdenv.hostPlatform.isPower64 && stdenv.hostPlatform.isBigEndian)
   && (stdenv.hostPlatform == stdenv.buildPlatform)
 , enableManpages ? false
 , enableSharedLibraries ? !stdenv.hostPlatform.isStatic
-, enablePFM ? stdenv.isLinux /* PFM only supports Linux */
+, enablePFM ? stdenv.hostPlatform.isLinux /* PFM only supports Linux */
   # broken for Ampere eMAG 8180 (c2.large.arm on Packet) #56245
   # broken for the armv7l builder
   && !stdenv.hostPlatform.isAarch
@@ -126,7 +126,7 @@ stdenv.mkDerivation (rec {
   propagatedBuildInputs = (lib.optional (lib.versionAtLeast release_version "14" || stdenv.buildPlatform == stdenv.hostPlatform) ncurses)
     ++ [ zlib ];
 
-  postPatch = optionalString stdenv.isDarwin (''
+  postPatch = optionalString stdenv.hostPlatform.isDarwin (''
     substituteInPlace cmake/modules/AddLLVM.cmake \
       --replace 'set(_install_name_dir INSTALL_NAME_DIR "@rpath")' "set(_install_name_dir)" \
       --replace 'set(_install_rpath "@loader_path/../''${CMAKE_INSTALL_LIBDIR}''${LLVM_LIBDIR_SUFFIX}" ''${extra_libdir})' ""
@@ -167,7 +167,7 @@ stdenv.mkDerivation (rec {
       --replace "PhysicalFileSystemWorkingDirFailure" "DISABLED_PhysicalFileSystemWorkingDirFailure"
   ''))) +
     # dup of above patch with different conditions
-    optionalString (stdenv.isDarwin && stdenv.hostPlatform.isx86 && lib.versionAtLeast release_version "15") (optionalString (lib.versionOlder release_version "16") ''
+    optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86 && lib.versionAtLeast release_version "15") (optionalString (lib.versionOlder release_version "16") ''
     substituteInPlace test/ExecutionEngine/Interpreter/intrinsics.ll \
       --replace "%roundeven32 = call float @llvm.roundeven.f32(float 0.000000e+00)" "" \
       --replace "%roundeven64 = call double @llvm.roundeven.f64(double 0.000000e+00)" ""
@@ -267,7 +267,7 @@ stdenv.mkDerivation (rec {
     # It seems to reference /usr/local/lib/libfile.a, which is clearly a problem.
     # 2. This test fails for the same reason it fails on MacOS, but the fix is
     # not trivial to apply.
-    optionalString stdenv.isFreeBSD ''
+    optionalString stdenv.hostPlatform.isFreeBSD ''
     rm test/tools/llvm-libtool-darwin/L-and-l.test
     rm test/ExecutionEngine/Interpreter/intrinsics.ll
   '' + ''
@@ -319,7 +319,7 @@ stdenv.mkDerivation (rec {
   '';
 
   # E.g. Mesa uses the build-id as a cache key (see #93946):
-  LDFLAGS = optionalString (enableSharedLibraries && !stdenv.isDarwin) "-Wl,--build-id=sha1";
+  LDFLAGS = optionalString (enableSharedLibraries && !stdenv.hostPlatform.isDarwin) "-Wl,--build-id=sha1";
 
   cmakeBuildType = if debugVersion then "Debug" else "Release";
 
@@ -367,7 +367,7 @@ stdenv.mkDerivation (rec {
     "-DSPHINX_WARNINGS_AS_ERRORS=OFF"
   ] ++ optionals (enableGoldPlugin) [
     "-DLLVM_BINUTILS_INCDIR=${libbfd.dev}/include"
-  ] ++ optionals stdenv.isDarwin [
+  ] ++ optionals stdenv.hostPlatform.isDarwin [
     "-DLLVM_ENABLE_LIBCXX=ON"
     "-DCAN_TARGET_i386=false"
   ] ++ optionals ((stdenv.hostPlatform != stdenv.buildPlatform) && !(stdenv.buildPlatform.canExecute stdenv.hostPlatform)) [
@@ -416,10 +416,10 @@ stdenv.mkDerivation (rec {
     substituteInPlace "$dev/lib/cmake/llvm/LLVMConfig.cmake" \
       --replace 'set(LLVM_BINARY_DIR "''${LLVM_INSTALL_PREFIX}")' 'set(LLVM_BINARY_DIR "'"$lib"'")'
   '')
-  + optionalString (stdenv.isDarwin && enableSharedLibraries && lib.versionOlder release_version "18") ''
+  + optionalString (stdenv.hostPlatform.isDarwin && enableSharedLibraries && lib.versionOlder release_version "18") ''
     ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${shortVersion}.dylib
   ''
-  + optionalString (stdenv.isDarwin && enableSharedLibraries) ''
+  + optionalString (stdenv.hostPlatform.isDarwin && enableSharedLibraries) ''
     ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${release_version}.dylib
   ''
   + optionalString (stdenv.buildPlatform != stdenv.hostPlatform) (if stdenv.buildPlatform.canExecute stdenv.hostPlatform then ''
@@ -495,7 +495,7 @@ stdenv.mkDerivation (rec {
     mv polly-* $sourceRoot/tools/polly
   '';
 } // lib.optionalAttrs (lib.versionAtLeast release_version "13") {
-  nativeCheckInputs = [ which ] ++ lib.optional (stdenv.isDarwin && lib.versionAtLeast release_version "15") sysctl;
+  nativeCheckInputs = [ which ] ++ lib.optional (stdenv.hostPlatform.isDarwin && lib.versionAtLeast release_version "15") sysctl;
 } // lib.optionalAttrs (lib.versionOlder release_version "15") {
   # hacky fix: created binaries need to be run before installation
   preBuild = ''
diff --git a/pkgs/development/compilers/llvm/common/mlir/default.nix b/pkgs/development/compilers/llvm/common/mlir/default.nix
index 3ef689b7fefe..e4dd12d69e58 100644
--- a/pkgs/development/compilers/llvm/common/mlir/default.nix
+++ b/pkgs/development/compilers/llvm/common/mlir/default.nix
@@ -9,7 +9,7 @@
 , libxml2
 , libllvm
 , version
-, doCheck ? (!stdenv.isx86_32 /* TODO: why */) && (!stdenv.hostPlatform.isMusl)
+, doCheck ? (!stdenv.hostPlatform.isx86_32 /* TODO: why */) && (!stdenv.hostPlatform.isMusl)
 , devExtraCmakeFlags ? []
 }:
 
diff --git a/pkgs/development/compilers/lobster/default.nix b/pkgs/development/compilers/lobster/default.nix
index 645e7019aa73..2ebe573cf513 100644
--- a/pkgs/development/compilers/lobster/default.nix
+++ b/pkgs/development/compilers/lobster/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = if stdenv.isDarwin
+  buildInputs = if stdenv.hostPlatform.isDarwin
     then [
       CoreFoundation
       Cocoa
@@ -50,7 +50,7 @@ stdenv.mkDerivation (finalAttrs: {
   passthru.tests.can-run-hello-world = callPackage ./test-can-run-hello-world.nix {};
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://strlen.com/lobster/";
     description = "Lobster programming language";
     mainProgram = "lobster";
diff --git a/pkgs/development/compilers/minimacy/default.nix b/pkgs/development/compilers/minimacy/default.nix
index ae4da0d5b027..6f4d14b27901 100644
--- a/pkgs/development/compilers/minimacy/default.nix
+++ b/pkgs/development/compilers/minimacy/default.nix
@@ -22,18 +22,18 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ makeBinaryWrapper ];
 
-  buildInputs = [ libGL libGLU ] ++ lib.optionals stdenv.isLinux [ alsa-lib libX11 libXext ];
+  buildInputs = [ libGL libGLU ] ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib libX11 libXext ];
 
   enableParallelBuilding = true;
 
   env.NIX_CFLAGS_COMPILE = "-Wno-unused-result";
 
   preBuild = ''
-    pushd ${if stdenv.isDarwin then "macos/cmdline" else "unix"}
+    pushd ${if stdenv.hostPlatform.isDarwin then "macos/cmdline" else "unix"}
   '';
 
   # TODO: build graphic version for darwin
-  buildFlags = (if stdenv.isDarwin then [ "nox" ] else [ "all" ]) ++ [ "CC=${stdenv.cc.targetPrefix}cc" ];
+  buildFlags = (if stdenv.hostPlatform.isDarwin then [ "nox" ] else [ "all" ]) ++ [ "CC=${stdenv.cc.targetPrefix}cc" ];
 
   postBuild = ''
     popd
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
   checkPhase = ''
     runHook preCheck
 
-    bin/${if stdenv.isDarwin then "minimacyMac" else "minimacy"} system/demo/demo.fun.mandelbrot.mcy
+    bin/${if stdenv.hostPlatform.isDarwin then "minimacyMac" else "minimacy"} system/demo/demo.fun.mandelbrot.mcy
 
     runHook postCheck
   '';
diff --git a/pkgs/development/compilers/mit-scheme/default.nix b/pkgs/development/compilers/mit-scheme/default.nix
index 1abbac512aa7..c9fc962e30b4 100644
--- a/pkgs/development/compilers/mit-scheme/default.nix
+++ b/pkgs/development/compilers/mit-scheme/default.nix
@@ -15,9 +15,9 @@
 
 let
   version = "12.1";
-  bootstrapFromC = ! ((stdenv.isLinux && stdenv.isAarch64) || stdenv.isx86_64);
+  bootstrapFromC = ! ((stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isx86_64);
 
-  arch = if stdenv.isLinux && stdenv.isAarch64 then
+  arch = if stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64 then
     "-aarch64le"
    else
      "-x86-64";
@@ -31,7 +31,7 @@ stdenv.mkDerivation {
   # leads to more efficient code than when building the tarball that contains
   # generated C code instead of those binaries.
   src =
-    if stdenv.isLinux && stdenv.isAarch64
+    if stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64
     then fetchurl {
       url = "mirror://gnu/mit-scheme/stable.pkg/${version}/mit-scheme-${version}-aarch64le.tar.gz";
       sha256 = "12ra9bc93x8g07impbd8jr6djjzwpb9qvh9zhxvvrba3332zx3vh";
diff --git a/pkgs/development/compilers/mkcl/default.nix b/pkgs/development/compilers/mkcl/default.nix
index 0b95f3e9b2a6..ae2d11feb765 100644
--- a/pkgs/development/compilers/mkcl/default.nix
+++ b/pkgs/development/compilers/mkcl/default.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "ANSI Common Lisp Implementation";
     homepage = "https://common-lisp.net/project/mkcl/";
     license = licenses.lgpl2Plus;
diff --git a/pkgs/development/compilers/mlton/20130715.nix b/pkgs/development/compilers/mlton/20130715.nix
index 98b4aeda5516..90285bf08982 100644
--- a/pkgs/development/compilers/mlton/20130715.nix
+++ b/pkgs/development/compilers/mlton/20130715.nix
@@ -3,7 +3,7 @@
 let
   version = "20130715";
 
-  usr_prefix = if stdenv.isDarwin then "usr/local" else "usr";
+  usr_prefix = if stdenv.hostPlatform.isDarwin then "usr/local" else "usr";
 
   dynamic_linker = stdenv.cc.bintools.dynamicLinker;
 in
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
   sourceRoot = "${pname}-${version}";
 
   buildInputs = [ gmp ];
-  nativeBuildInputs = lib.optional stdenv.isLinux patchelf;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isLinux patchelf;
 
   makeFlags = [ "all-no-docs" ];
 
@@ -63,7 +63,7 @@ stdenv.mkDerivation rec {
     substituteInPlace $(pwd)/../${usr_prefix}/bin/mlton --replace '/${usr_prefix}/lib/mlton' $(pwd)/../${usr_prefix}/lib/mlton
   '' + lib.optionalString stdenv.cc.isClang ''
     sed -i "s_	patch -s -p0 <gdtoa.hide-public-fns.patch_	patch -s -p0 <gdtoa.hide-public-fns.patch\n\tsed -i 's|printf(emptyfmt|printf(\"\"|g' ./gdtoa/arithchk.c_" ./runtime/Makefile
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i 's|XCFLAGS += -I/usr/local/include -I/sw/include -I/opt/local/include||' ./runtime/Makefile
   '';
 
@@ -79,13 +79,13 @@ stdenv.mkDerivation rec {
     # So the builder runs the binary compiler with gmp.
     export LD_LIBRARY_PATH=${gmp.out}/lib''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH
 
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     # Patch ELF interpreter.
     patchelf --set-interpreter ${dynamic_linker} $(pwd)/../${usr_prefix}/lib/mlton/mlton-compile
     for e in mllex mlyacc ; do
       patchelf --set-interpreter ${dynamic_linker} $(pwd)/../${usr_prefix}/bin/$e
     done
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Patch libgmp linking
     install_name_tool -change /opt/local/lib/libgmp.10.dylib ${gmp}/lib/libgmp.10.dylib $(pwd)/../${usr_prefix}/lib/mlton/mlton-compile
     install_name_tool -change /opt/local/lib/libgmp.10.dylib ${gmp}/lib/libgmp.10.dylib $(pwd)/../${usr_prefix}/bin/mlyacc
diff --git a/pkgs/development/compilers/mlton/20180207-binary.nix b/pkgs/development/compilers/mlton/20180207-binary.nix
index 4846b58bf26b..2384122d70b6 100644
--- a/pkgs/development/compilers/mlton/20180207-binary.nix
+++ b/pkgs/development/compilers/mlton/20180207-binary.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
     throw "Architecture not supported";
 
   buildInputs = [ gmp ];
-  nativeBuildInputs = lib.optional stdenv.isLinux patchelf;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isLinux patchelf;
 
   buildPhase = ''
     make update \
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
     make install PREFIX=$out
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --set-interpreter ${dynamic-linker} $out/lib/mlton/mlton-compile
     patchelf --set-rpath ${gmp}/lib $out/lib/mlton/mlton-compile
 
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
       patchelf --set-interpreter ${dynamic-linker} $out/bin/$e
       patchelf --set-rpath ${gmp}/lib $out/bin/$e
     done
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change \
       /opt/local/lib/libgmp.10.dylib \
       ${gmp}/lib/libgmp.10.dylib \
diff --git a/pkgs/development/compilers/mlton/20210117-binary.nix b/pkgs/development/compilers/mlton/20210117-binary.nix
index d4e55d47b94c..40e9482ba1fb 100644
--- a/pkgs/development/compilers/mlton/20210117-binary.nix
+++ b/pkgs/development/compilers/mlton/20210117-binary.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
       throw "Architecture not supported";
 
   buildInputs = [ gmp ];
-  nativeBuildInputs = lib.optional stdenv.isLinux patchelf;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isLinux patchelf;
 
   buildPhase = ''
     make update \
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
     make install PREFIX=$out
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --set-interpreter ${dynamic-linker} $out/lib/mlton/mlton-compile
     patchelf --set-rpath ${gmp}/lib $out/lib/mlton/mlton-compile
 
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
       patchelf --set-interpreter ${dynamic-linker} $out/bin/$e
       patchelf --set-rpath ${gmp}/lib $out/bin/$e
     done
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change \
       /opt/local/lib/libgmp.10.dylib \
       ${gmp}/lib/libgmp.10.dylib \
diff --git a/pkgs/development/compilers/mono/4.nix b/pkgs/development/compilers/mono/4.nix
index 0b283d4f1778..8664cb3f7283 100644
--- a/pkgs/development/compilers/mono/4.nix
+++ b/pkgs/development/compilers/mono/4.nix
@@ -5,5 +5,5 @@ callPackage ./generic.nix ({
   version = "4.8.1.0";
   sha256 = "1vyvp2g28ihcgxgxr8nhzyzdmzicsh5djzk8dk1hj5p5f2k3ijqq";
   enableParallelBuilding = false; # #32386, https://hydra.nixos.org/build/65600645
-  extraPatches = lib.optionals stdenv.isLinux [ ./mono4-glibc.patch ];
+  extraPatches = lib.optionals stdenv.hostPlatform.isLinux [ ./mono4-glibc.patch ];
 })
diff --git a/pkgs/development/compilers/mono/generic.nix b/pkgs/development/compilers/mono/generic.nix
index 42c519e5021c..44fb05329030 100644
--- a/pkgs/development/compilers/mono/generic.nix
+++ b/pkgs/development/compilers/mono/generic.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     ncurses
     zlib
     bash
-  ] ++ lib.optionals stdenv.isDarwin [ Foundation libobjc ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Foundation libobjc ];
 
   configureFlags = [
     "--x-includes=${libX11.dev}/include"
@@ -94,7 +94,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     # Per nixpkgs#151720 the build failures for aarch64-darwin are fixed since 6.12.0.129
-    broken = stdenv.isDarwin && stdenv.isAarch64 && lib.versionOlder version "6.12.0.129";
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 && lib.versionOlder version "6.12.0.129";
     homepage = "https://mono-project.com/";
     description = "Cross platform, open source .NET development framework";
     platforms = with platforms; darwin ++ linux;
diff --git a/pkgs/development/compilers/mono/llvm.nix b/pkgs/development/compilers/mono/llvm.nix
index c69a4021677e..a9b21845f46a 100644
--- a/pkgs/development/compilers/mono/llvm.nix
+++ b/pkgs/development/compilers/mono/llvm.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ perl groff libxml2 python2 libffi ] ++ lib.optional stdenv.isLinux valgrind;
+  buildInputs = [ perl groff libxml2 python2 libffi ] ++ lib.optional stdenv.hostPlatform.isLinux valgrind;
 
   propagatedBuildInputs = [ ncurses zlib ];
 
diff --git a/pkgs/development/compilers/mozart/default.nix b/pkgs/development/compilers/mozart/default.nix
index 8b66cbce688b..b82253d2b493 100644
--- a/pkgs/development/compilers/mozart/default.nix
+++ b/pkgs/development/compilers/mozart/default.nix
@@ -76,7 +76,7 @@ in stdenv.mkDerivation rec {
     homepage = "https://mozart.github.io";
     platforms = platforms.all;
     # Trace/BPT trap: 5
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 
 }
diff --git a/pkgs/development/compilers/myrddin/default.nix b/pkgs/development/compilers/myrddin/default.nix
index b682b1e0ac54..e9369ef043e8 100644
--- a/pkgs/development/compilers/myrddin/default.nix
+++ b/pkgs/development/compilers/myrddin/default.nix
@@ -53,6 +53,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ luc65r ];
     platforms = platforms.all;
     # darwin: never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/myrddin.x86_64-darwin
-    broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/compilers/neko/default.nix b/pkgs/development/compilers/neko/default.nix
index a0c888674016..7219d2b38097 100644
--- a/pkgs/development/compilers/neko/default.nix
+++ b/pkgs/development/compilers/neko/default.nix
@@ -25,8 +25,8 @@ stdenv.mkDerivation rec {
   buildInputs =
     [ boehmgc zlib sqlite pcre apacheHttpd apr aprutil
       libmysqlclient mbedtls_2 openssl libpthreadstubs ]
-      ++ lib.optional stdenv.isLinux gtk2
-      ++ lib.optionals stdenv.isDarwin [ pkgs.darwin.apple_sdk.frameworks.Security
+      ++ lib.optional stdenv.hostPlatform.isLinux gtk2
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ pkgs.darwin.apple_sdk.frameworks.Security
                                                 pkgs.darwin.apple_sdk.frameworks.Carbon];
   cmakeFlags = [ "-DRUN_LDCONFIG=OFF" ];
   env = lib.optionalAttrs stdenv.cc.isClang {
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
 
   # Called from tools/test.neko line 2
   # Uncaught exception - Segmentation fault
-  doInstallCheck = !stdenv.isDarwin;
+  doInstallCheck = !stdenv.hostPlatform.isDarwin;
   dontPatchELF = true;
   dontStrip = true;
 
diff --git a/pkgs/development/compilers/nim/default.nix b/pkgs/development/compilers/nim/default.nix
index 4655cb03ad7b..68d9eedacc8d 100644
--- a/pkgs/development/compilers/nim/default.nix
+++ b/pkgs/development/compilers/nim/default.nix
@@ -85,7 +85,7 @@ in {
     };
 
     buildInputs = [ boehmgc openssl pcre readline sqlite ]
-      ++ lib.optional stdenv.isDarwin Security;
+      ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
     patches = [
       ./NIM_CONFIG_DIR.patch
@@ -124,9 +124,9 @@ in {
       "--os:${nimHost.os}"
       "-d:release"
       "-d:useGnuReadline"
-    ] ++ lib.optional (stdenv.isDarwin || stdenv.isLinux) "-d:nativeStacktrace";
+    ] ++ lib.optional (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isLinux) "-d:nativeStacktrace";
 
-    preBuild = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+    preBuild = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
       substituteInPlace makefile \
         --replace "aarch64" "arm64"
     '';
@@ -192,7 +192,7 @@ in {
 
         # Needed for any nim package that uses the standard library's
         # 'std/sysrand' module.
-        depsTargetTargetPropagated = lib.optional stdenv.isDarwin Security;
+        depsTargetTargetPropagated = lib.optional stdenv.hostPlatform.isDarwin Security;
 
         inherit patches;
 
@@ -252,7 +252,7 @@ in {
             runHook postBuild
           '';
 
-        wrapperArgs = lib.optionals (!(stdenv.isDarwin && stdenv.isAarch64)) [
+        wrapperArgs = lib.optionals (!(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)) [
           "--prefix PATH : ${lib.makeBinPath [ buildPackages.gdb ]}:${
             placeholder "out"
           }/bin"
diff --git a/pkgs/development/compilers/ocaml/4.00.1.nix b/pkgs/development/compilers/ocaml/4.00.1.nix
index e4a4ed0f9580..c9b94abd2964 100644
--- a/pkgs/development/compilers/ocaml/4.00.1.nix
+++ b/pkgs/development/compilers/ocaml/4.00.1.nix
@@ -1,8 +1,8 @@
 { lib, stdenv, fetchurl, fetchpatch, ncurses, libX11 }:
 
 let
-   useX11 = !stdenv.isAarch32 && !stdenv.isMips;
-   useNativeCompilers = !stdenv.isMips;
+   useX11 = !stdenv.hostPlatform.isAarch32 && !stdenv.hostPlatform.isMips;
+   useNativeCompilers = !stdenv.hostPlatform.isMips;
    inherit (lib) optional optionals optionalString;
 in
 
diff --git a/pkgs/development/compilers/ocaml/ber-metaocaml.nix b/pkgs/development/compilers/ocaml/ber-metaocaml.nix
index 5279fc7481b6..b3bf5038702f 100644
--- a/pkgs/development/compilers/ocaml/ber-metaocaml.nix
+++ b/pkgs/development/compilers/ocaml/ber-metaocaml.nix
@@ -82,7 +82,7 @@ stdenv.mkDerivation rec {
 
     branch          = baseOcamlBranch;
     platforms       = with platforms; linux ++ darwin;
-    broken          = stdenv.isAarch64 || stdenv.isMips;
+    broken          = stdenv.hostPlatform.isAarch64 || stdenv.hostPlatform.isMips;
 
     longDescription = ''
       A simple extension of OCaml with the primitive type of code values, and
diff --git a/pkgs/development/compilers/ocaml/generic.nix b/pkgs/development/compilers/ocaml/generic.nix
index af07074eba1b..b40efbd32741 100644
--- a/pkgs/development/compilers/ocaml/generic.nix
+++ b/pkgs/development/compilers/ocaml/generic.nix
@@ -3,7 +3,7 @@
 let
   versionNoPatch = "${toString major_version}.${toString minor_version}";
   version = "${versionNoPatch}.${toString patch_version}";
-  safeX11 = stdenv: !(stdenv.isAarch32 || stdenv.isMips || stdenv.hostPlatform.isStatic);
+  safeX11 = stdenv: !(stdenv.hostPlatform.isAarch32 || stdenv.hostPlatform.isMips || stdenv.hostPlatform.isStatic);
 in
 
 { lib, stdenv, fetchurl, ncurses, buildEnv, libunwind, fetchpatch
@@ -30,7 +30,7 @@ let
 in
 
 let
-  useNativeCompilers = !stdenv.isMips;
+  useNativeCompilers = !stdenv.hostPlatform.isMips;
   inherit (lib) optional optionals optionalString strings concatStrings;
   pname = concatStrings [ "ocaml"
     (optionalString aflSupport "+afl")
@@ -84,7 +84,7 @@ stdenv.mkDerivation (args // {
   # `aarch64-apple-darwin-clang` while using assembler. However, such binary
   # does not exist. So, disable these configure flags on `aarch64-darwin`.
   # See #144785 for details.
-  configurePlatforms = lib.optionals (lib.versionAtLeast version "4.08" && !(stdenv.isDarwin && stdenv.isAarch64)) [ "host" "target" ];
+  configurePlatforms = lib.optionals (lib.versionAtLeast version "4.08" && !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)) [ "host" "target" ];
   # x86_64-unknown-linux-musl-ld: -r and -pie may not be used together
   hardeningDisable = lib.optional (lib.versionAtLeast version "4.09" && stdenv.hostPlatform.isMusl) "pie"
     ++ lib.optional (lib.versionAtLeast version "5.0" && stdenv.cc.isClang) "strictoverflow"
@@ -114,7 +114,7 @@ stdenv.mkDerivation (args // {
   preConfigure = optionalString (lib.versionOlder version "4.04") ''
     CAT=$(type -tp cat)
     sed -e "s@/bin/cat@$CAT@" -i config/auto-aux/sharpbang
-  '' + optionalString (stdenv.isDarwin) ''
+  '' + optionalString (stdenv.hostPlatform.isDarwin) ''
     # Do what upstream does by default now: https://github.com/ocaml/ocaml/pull/10176
     # This is required for aarch64-darwin, everything else works as is.
     AS="${stdenv.cc}/bin/cc -c" ASPP="${stdenv.cc}/bin/cc -c"
@@ -157,7 +157,7 @@ stdenv.mkDerivation (args // {
     '';
 
     platforms = with platforms; linux ++ darwin;
-    broken = stdenv.isAarch64 && lib.versionOlder version (if stdenv.isDarwin then "4.10" else "4.02");
+    broken = stdenv.hostPlatform.isAarch64 && lib.versionOlder version (if stdenv.hostPlatform.isDarwin then "4.10" else "4.02");
   };
 
 })
diff --git a/pkgs/development/compilers/openjdk/11.nix b/pkgs/development/compilers/openjdk/11.nix
index 089e8411210c..a5110cb24d27 100644
--- a/pkgs/development/compilers/openjdk/11.nix
+++ b/pkgs/development/compilers/openjdk/11.nix
@@ -84,7 +84,7 @@ let
       # https://github.com/NixOS/nixpkgs/issues/150655#issuecomment-1935304859
       "--with-extra-cxxflags=-xc++"
     ]
-    ++ lib.optional stdenv.isx86_64 "--with-jvm-features=zgc"
+    ++ lib.optional stdenv.hostPlatform.isx86_64 "--with-jvm-features=zgc"
     ++ lib.optional headless "--enable-headless-only"
     ++ lib.optional (!headless && enableJavaFX) "--with-import-modules=${openjfx}";
 
diff --git a/pkgs/development/compilers/openjdk/21.nix b/pkgs/development/compilers/openjdk/21.nix
index 9c403fb2755d..7a650fa4a30f 100644
--- a/pkgs/development/compilers/openjdk/21.nix
+++ b/pkgs/development/compilers/openjdk/21.nix
@@ -98,7 +98,7 @@ let
       # https://github.com/NixOS/nixpkgs/issues/150655#issuecomment-1935304859
       "--with-extra-cxxflags=-xc++"
     ]
-    ++ lib.optional stdenv.isx86_64 "--with-jvm-features=zgc"
+    ++ lib.optional stdenv.hostPlatform.isx86_64 "--with-jvm-features=zgc"
     ++ lib.optional headless "--enable-headless-only"
     ++ lib.optional (!headless && enableJavaFX) "--with-import-modules=${openjfx}";
 
diff --git a/pkgs/development/compilers/orc/default.nix b/pkgs/development/compilers/orc/default.nix
index 18b99d5ba69a..dd71582bdfbd 100644
--- a/pkgs/development/compilers/orc/default.nix
+++ b/pkgs/development/compilers/orc/default.nix
@@ -25,7 +25,7 @@ in stdenv.mkDerivation rec {
     sha256 = "sha256-M+0jh/Sbgl+hucOwBy4F8lkUG4lUdK0IWuURQ9MEDMA=";
   };
 
-  postPatch = lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) ''
+  postPatch = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) ''
     # This benchmark times out on Hydra.nixos.org
     sed -i '/memcpy_speed/d' testsuite/meson.build
   '';
@@ -44,7 +44,7 @@ in stdenv.mkDerivation rec {
   ;
 
   # https://gitlab.freedesktop.org/gstreamer/orc/-/issues/41
-  doCheck = !(stdenv.isLinux && stdenv.isAarch64 && stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "12");
+  doCheck = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64 && stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "12");
 
   passthru.tests = {
     inherit (gst_all_1) gst-plugins-good gst-plugins-bad gst-plugins-ugly;
diff --git a/pkgs/development/compilers/osl/default.nix b/pkgs/development/compilers/osl/default.nix
index b7ad7537c7e1..0bba8266f094 100644
--- a/pkgs/development/compilers/osl/default.nix
+++ b/pkgs/development/compilers/osl/default.nix
@@ -68,7 +68,7 @@ in stdenv.mkDerivation rec {
     python3.pkgs.pybind11
     util-linux # needed just for hexdump
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libxml2
   ];
 
diff --git a/pkgs/development/compilers/polyml/5.6.nix b/pkgs/development/compilers/polyml/5.6.nix
index bcd52380701a..ee841882833c 100644
--- a/pkgs/development/compilers/polyml/5.6.nix
+++ b/pkgs/development/compilers/polyml/5.6.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation {
   pname = "polyml";
   inherit version;
 
-  prePatch = lib.optionalString stdenv.isDarwin ''
+  prePatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure.ac --replace stdc++ c++
   '';
 
@@ -20,7 +20,7 @@ stdenv.mkDerivation {
     })
   ];
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin autoreconfHook;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin autoreconfHook;
 
   src = fetchurl {
     url = "mirror://sourceforge/polyml/polyml.${version}.tar.gz";
diff --git a/pkgs/development/compilers/polyml/5.7.nix b/pkgs/development/compilers/polyml/5.7.nix
index f48377e0e0ac..471e8b2fd9f1 100644
--- a/pkgs/development/compilers/polyml/5.7.nix
+++ b/pkgs/development/compilers/polyml/5.7.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation rec {
   pname = "polyml";
   version = "5.7.1";
 
-  prePatch = lib.optionalString stdenv.isDarwin ''
+  prePatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure.ac --replace stdc++ c++
   '';
 
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ libffi gmp ];
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin autoreconfHook;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin autoreconfHook;
 
   configureFlags = [
     "--enable-shared"
@@ -45,6 +45,6 @@ stdenv.mkDerivation rec {
     platforms = with platforms; (linux ++ darwin);
     maintainers = with maintainers; [ maggesi ];
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/compilers/polyml/default.nix b/pkgs/development/compilers/polyml/default.nix
index c82a88bb2793..067bdd018f27 100644
--- a/pkgs/development/compilers/polyml/default.nix
+++ b/pkgs/development/compilers/polyml/default.nix
@@ -17,13 +17,13 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-72wm8dt+Id59A5058mVE5P9TkXW5/LZRthZoxUustVA=";
   };
 
-  prePatch = lib.optionalString stdenv.isDarwin ''
+  prePatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure.ac --replace stdc++ c++
   '';
 
   buildInputs = [ libffi gmp ];
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin autoreconfHook;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin autoreconfHook;
 
   configureFlags = [
     "--enable-shared"
diff --git a/pkgs/development/compilers/ponyc/default.nix b/pkgs/development/compilers/ponyc/default.nix
index b10739ca3363..ca23261a9865 100644
--- a/pkgs/development/compilers/ponyc/default.nix
+++ b/pkgs/development/compilers/ponyc/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation (rec {
   };
 
   nativeBuildInputs = [ cmake makeWrapper which python3 ]
-    ++ lib.optionals (stdenv.isDarwin) [ cctools ];
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ cctools ];
   buildInputs = [ libxml2 z3 ];
 
   # Sandbox disallows network access, so disabling problematic networking tests
@@ -53,7 +53,7 @@ stdenv.mkDerivation (rec {
         hash = "sha256-/FWBSxZESwj/QvdNK5BI2EfonT64DP1eGBZR4O8uJww=";
       };
     })
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     (substituteAll {
       src = ./fix-darwin-build.patch;
       libSystem = darwin.Libsystem;
@@ -85,15 +85,15 @@ stdenv.mkDerivation (rec {
   makeFlags = [
     "PONYC_VERSION=${version}"
     "prefix=${placeholder "out"}"
-  ] ++ lib.optionals stdenv.isDarwin ([ "bits=64" ] ++ lib.optional (!lto) "lto=no");
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin ([ "bits=64" ] ++ lib.optional (!lto) "lto=no");
 
   env.NIX_CFLAGS_COMPILE = toString [ "-Wno-error=redundant-move" "-Wno-error=implicit-fallthrough" ];
 
   # make: *** [Makefile:222: test-full-programs-release] Killed: 9
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   installPhase = "make config=release prefix=$out "
-    + lib.optionalString stdenv.isDarwin ("bits=64 " + (lib.optionalString (!lto) "lto=no "))
+    + lib.optionalString stdenv.hostPlatform.isDarwin ("bits=64 " + (lib.optionalString (!lto) "lto=no "))
     + '' install
     wrapProgram $out/bin/ponyc \
       --prefix PATH ":" "${stdenv.cc}/bin" \
diff --git a/pkgs/development/compilers/purescript/psc-package/default.nix b/pkgs/development/compilers/purescript/psc-package/default.nix
index f0664df84dfe..99947491cde0 100644
--- a/pkgs/development/compilers/purescript/psc-package/default.nix
+++ b/pkgs/development/compilers/purescript/psc-package/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
 
   version = "0.6.2";
 
-  src = if stdenv.isDarwin
+  src = if stdenv.hostPlatform.isDarwin
   then fetchurl {
     url = "https://github.com/purescript/psc-package/releases/download/v0.6.2/macos.tar.gz";
     sha256 = "17dh3bc5b6ahfyx0pi6n9qnrhsyi83qdynnca6k1kamxwjimpcq1";
@@ -34,12 +34,12 @@ stdenv.mkDerivation rec {
 
     install -D -m555 -T psc-package $PSC_PACKAGE
     chmod u+w $PSC_PACKAGE
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool \
       -change /usr/lib/libSystem.B.dylib ${darwin.Libsystem}/lib/libSystem.B.dylib \
       -change /usr/lib/libiconv.2.dylib ${libiconv}/libiconv.2.dylib \
       $PSC_PACKAGE
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     patchelf --interpreter ${dynamic-linker} --set-rpath ${libPath} $PSC_PACKAGE
   '' + ''
     chmod u-w $PSC_PACKAGE
diff --git a/pkgs/development/compilers/purescript/purescript/default.nix b/pkgs/development/compilers/purescript/purescript/default.nix
index 61a8c3a5c5bd..8f88fed052ee 100644
--- a/pkgs/development/compilers/purescript/purescript/default.nix
+++ b/pkgs/development/compilers/purescript/purescript/default.nix
@@ -7,7 +7,7 @@ let
   dynamic-linker = stdenv.cc.bintools.dynamicLinker;
 
   patchelf = libPath :
-    lib.optionalString (!stdenv.isDarwin) ''
+    lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
           chmod u+w $PURS
           patchelf --interpreter ${dynamic-linker} --set-rpath ${libPath} $PURS
           chmod u-w $PURS
diff --git a/pkgs/development/compilers/rust/1_80.nix b/pkgs/development/compilers/rust/1_80.nix
index 4c2efcc367f4..fe301144afff 100644
--- a/pkgs/development/compilers/rust/1_80.nix
+++ b/pkgs/development/compilers/rust/1_80.nix
@@ -88,7 +88,7 @@ import ./default.nix
                 allowedRequisites = null;
                 cc = llvmPackages.clangNoLibcxx;
                 hostPlatform = stdenv.hostPlatform // {
-                  useLLVM = !stdenv.isDarwin;
+                  useLLVM = !stdenv.hostPlatform.isDarwin;
                 };
               };
               inherit libunwind;
diff --git a/pkgs/development/compilers/rust/binary.nix b/pkgs/development/compilers/rust/binary.nix
index 10e944515df7..6d31f1af55af 100644
--- a/pkgs/development/compilers/rust/binary.nix
+++ b/pkgs/development/compilers/rust/binary.nix
@@ -33,11 +33,11 @@ rec {
       license = [ licenses.mit licenses.asl20 ];
     };
 
-    nativeBuildInputs = lib.optional (!stdenv.isDarwin) autoPatchelfHook;
+    nativeBuildInputs = lib.optional (!stdenv.hostPlatform.isDarwin) autoPatchelfHook;
     buildInputs = [ bash ]
-      ++ lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD) gcc.cc.lib
-      ++ lib.optional (!stdenv.isDarwin) zlib
-      ++ lib.optional stdenv.isDarwin Security;
+      ++ lib.optional (!stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isFreeBSD) gcc.cc.lib
+      ++ lib.optional (!stdenv.hostPlatform.isDarwin) zlib
+      ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
     postPatch = ''
       patchShebangs .
@@ -80,10 +80,10 @@ rec {
     };
 
     nativeBuildInputs = [ makeWrapper ]
-      ++ lib.optional (!stdenv.isDarwin) autoPatchelfHook;
+      ++ lib.optional (!stdenv.hostPlatform.isDarwin) autoPatchelfHook;
     buildInputs = [ bash ]
-      ++ lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD) gcc.cc.lib
-      ++ lib.optional stdenv.isDarwin Security;
+      ++ lib.optional (!stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isFreeBSD) gcc.cc.lib
+      ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
     postPatch = ''
       patchShebangs .
diff --git a/pkgs/development/compilers/rust/cargo.nix b/pkgs/development/compilers/rust/cargo.nix
index 9a12537f3e32..6ece7c304fc5 100644
--- a/pkgs/development/compilers/rust/cargo.nix
+++ b/pkgs/development/compilers/rust/cargo.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage.override {
     zlib
   ];
   buildInputs = [ file curl python3 openssl zlib ]
-    ++ lib.optionals stdenv.isDarwin [ CoreFoundation Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreFoundation Security ];
 
   # cargo uses git-rs which is made for a version of libgit2 from recent master that
   # is not compatible with the current version in nixpkgs.
diff --git a/pkgs/development/compilers/rust/clippy.nix b/pkgs/development/compilers/rust/clippy.nix
index 640ea7908e25..6a233ffe1852 100644
--- a/pkgs/development/compilers/rust/clippy.nix
+++ b/pkgs/development/compilers/rust/clippy.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage {
   dontUpdateAutotoolsGnuConfigScripts = true;
 
   buildInputs = [ rustc.llvm ]
-    ++ lib.optionals stdenv.isDarwin [ Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   # fixes: error: the option `Z` is only accepted on the nightly compiler
   RUSTC_BOOTSTRAP = 1;
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage {
   #
   # [0]: https://github.com/rust-lang/rust/blob/f77f4d55bdf9d8955d3292f709bd9830c2fdeca5/src/bootstrap/builder.rs#L1543
   # [1]: https://github.com/rust-lang/rust/blob/f77f4d55bdf9d8955d3292f709bd9830c2fdeca5/compiler/rustc_codegen_ssa/src/back/linker.rs#L323-L331
-  preFixup = lib.optionalString stdenv.isDarwin ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -add_rpath "${rustc.unwrapped}/lib" "$out/bin/clippy-driver"
     install_name_tool -add_rpath "${rustc.unwrapped}/lib" "$out/bin/cargo-clippy"
   '';
diff --git a/pkgs/development/compilers/rust/rustc.nix b/pkgs/development/compilers/rust/rustc.nix
index 1b8a3dbfba6b..c8eb3f438e99 100644
--- a/pkgs/development/compilers/rust/rustc.nix
+++ b/pkgs/development/compilers/rust/rustc.nix
@@ -68,13 +68,13 @@ in stdenv.mkDerivation (finalAttrs: {
        # when linking stage1 libstd: cc: undefined reference to `__cxa_begin_catch'
        # This doesn't apply to cross-building for FreeBSD because the host
        # uses libstdc++, but the target (used for building std) uses libc++
-      optional (stdenv.isLinux && !withBundledLLVM && !stdenv.targetPlatform.isFreeBSD && !useLLVM)
+      optional (stdenv.hostPlatform.isLinux && !withBundledLLVM && !stdenv.targetPlatform.isFreeBSD && !useLLVM)
         "--push-state --as-needed -lstdc++ --pop-state"
-    ++ optional (stdenv.isLinux && !withBundledLLVM && !stdenv.targetPlatform.isFreeBSD && useLLVM)
+    ++ optional (stdenv.hostPlatform.isLinux && !withBundledLLVM && !stdenv.targetPlatform.isFreeBSD && useLLVM)
         "--push-state --as-needed -L${llvmPackages.libcxx}/lib -lc++ -lc++abi -lLLVM-${lib.versions.major llvmPackages.llvm.version} --pop-state"
-    ++ optional (stdenv.isDarwin && !withBundledLLVM) "-lc++ -lc++abi"
-    ++ optional stdenv.isFreeBSD "-rpath ${llvmPackages.libunwind}/lib"
-    ++ optional stdenv.isDarwin "-rpath ${llvmSharedForHost.lib}/lib");
+    ++ optional (stdenv.hostPlatform.isDarwin && !withBundledLLVM) "-lc++ -lc++abi"
+    ++ optional stdenv.hostPlatform.isFreeBSD "-rpath ${llvmPackages.libunwind}/lib"
+    ++ optional stdenv.hostPlatform.isDarwin "-rpath ${llvmSharedForHost.lib}/lib");
 
   # Increase codegen units to introduce parallelism within the compiler.
   RUSTFLAGS = "-Ccodegen-units=10";
@@ -166,7 +166,7 @@ in stdenv.mkDerivation (finalAttrs: {
     "${setTarget}.musl-root=${pkgsBuildTarget.targetPackages.stdenv.cc.libc}"
   ] ++ optionals stdenv.targetPlatform.rust.isNoStdTarget [
     "--disable-docs"
-  ] ++ optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  ] ++ optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     # https://github.com/rust-lang/rust/issues/92173
     "--set rust.jemalloc"
   ] ++ optionals useLLVM [
@@ -224,7 +224,7 @@ in stdenv.mkDerivation (finalAttrs: {
 
     # Useful debugging parameter
     # export VERBOSE=1
-  '' + lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) ''
     # See https://github.com/jemalloc/jemalloc/issues/1997
     # Using a value of 48 should work on both emulated and native x86_64-darwin.
     export JEMALLOC_SYS_WITH_LG_VADDR=48
@@ -236,7 +236,7 @@ in stdenv.mkDerivation (finalAttrs: {
     [source.vendored-sources]
     directory = "vendor"
     EOF
-  '' + lib.optionalString (stdenv.isFreeBSD) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isFreeBSD) ''
     # lzma-sys bundles an old version of xz that doesn't build
     # on modern FreeBSD, use the system one instead
     substituteInPlace src/bootstrap/src/core/build_steps/tool.rs \
@@ -257,7 +257,7 @@ in stdenv.mkDerivation (finalAttrs: {
     ++ optionals fastCross [ lndir makeWrapper ];
 
   buildInputs = [ openssl ]
-    ++ optionals stdenv.isDarwin [ libiconv Security zlib ]
+    ++ optionals stdenv.hostPlatform.isDarwin [ libiconv Security zlib ]
     ++ optional (!withBundledLLVM) llvmShared.lib
     ++ optional (useLLVM && !withBundledLLVM) [
       llvmPackages.libunwind
diff --git a/pkgs/development/compilers/rust/rustfmt.nix b/pkgs/development/compilers/rust/rustfmt.nix
index ab58a172a6b2..42c71513151a 100644
--- a/pkgs/development/compilers/rust/rustfmt.nix
+++ b/pkgs/development/compilers/rust/rustfmt.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     rustc.llvm
-  ] ++ lib.optional stdenv.isDarwin Security;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # rustfmt uses the rustc_driver and std private libraries, and Rust's build process forces them to have
   # an install name of `@rpath/...` [0] [1] instead of the standard on macOS, which is an absolute path
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
   #
   # [0]: https://github.com/rust-lang/rust/blob/f77f4d55bdf9d8955d3292f709bd9830c2fdeca5/src/bootstrap/builder.rs#L1543
   # [1]: https://github.com/rust-lang/rust/blob/f77f4d55bdf9d8955d3292f709bd9830c2fdeca5/compiler/rustc_codegen_ssa/src/back/linker.rs#L323-L331
-  preFixup = lib.optionalString stdenv.isDarwin ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -add_rpath "${rustc.unwrapped}/lib" "$out/bin/rustfmt"
     install_name_tool -add_rpath "${rustc.unwrapped}/lib" "$out/bin/git-rustfmt"
   '';
diff --git a/pkgs/development/compilers/sagittarius-scheme/default.nix b/pkgs/development/compilers/sagittarius-scheme/default.nix
index 0b4cc240694c..3877d752f795 100644
--- a/pkgs/development/compilers/sagittarius-scheme/default.nix
+++ b/pkgs/development/compilers/sagittarius-scheme/default.nix
@@ -6,12 +6,12 @@
 , boehmgc
 , openssl
 , zlib
-, odbcSupport ? !stdenv.isDarwin
+, odbcSupport ? !stdenv.hostPlatform.isDarwin
 , libiodbc
 }:
 
-let platformLdLibraryPath = if stdenv.isDarwin then "DYLD_FALLBACK_LIBRARY_PATH"
-                            else if (stdenv.isLinux or stdenv.isBSD) then "LD_LIBRARY_PATH"
+let platformLdLibraryPath = if stdenv.hostPlatform.isDarwin then "DYLD_FALLBACK_LIBRARY_PATH"
+                            else if (stdenv.hostPlatform.isLinux or stdenv.hostPlatform.isBSD) then "LD_LIBRARY_PATH"
                             else throw "unsupported platform";
 in
 stdenv.mkDerivation rec {
@@ -31,9 +31,9 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ libffi boehmgc openssl zlib ] ++ lib.optional odbcSupport libiodbc;
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-Wno-error=int-conversion"
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     # error: '__builtin_ia32_aeskeygenassist128' needs target feature aes
     "-maes"
   ]);
diff --git a/pkgs/development/compilers/sbcl/bootstrap.nix b/pkgs/development/compilers/sbcl/bootstrap.nix
index d796b24e1d7e..6f9b75c1183c 100644
--- a/pkgs/development/compilers/sbcl/bootstrap.nix
+++ b/pkgs/development/compilers/sbcl/bootstrap.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
       --add-flags "--core $out/share/sbcl/sbcl.core"
   '';
 
-  postFixup = lib.optionalString (!stdenv.isAarch32 && stdenv.isLinux) ''
+  postFixup = lib.optionalString (!stdenv.hostPlatform.isAarch32 && stdenv.hostPlatform.isLinux) ''
     patchelf --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) $out/share/sbcl/sbcl
   '';
 
diff --git a/pkgs/development/compilers/sbcl/default.nix b/pkgs/development/compilers/sbcl/default.nix
index 5cc21ada71a1..e6724a19d3b2 100644
--- a/pkgs/development/compilers/sbcl/default.nix
+++ b/pkgs/development/compilers/sbcl/default.nix
@@ -167,7 +167,7 @@ stdenv.mkDerivation (self: {
     lib.optional self.threadSupport "sb-thread" ++
     lib.optional self.linkableRuntime "sb-linkable-runtime" ++
     lib.optional self.coreCompression "sb-core-compression" ++
-    lib.optional stdenv.isAarch32 "arm" ++
+    lib.optional stdenv.hostPlatform.isAarch32 "arm" ++
     lib.optional self.markRegionGC "mark-region-gc";
 
   disableFeatures =
diff --git a/pkgs/development/compilers/scryer-prolog/default.nix b/pkgs/development/compilers/scryer-prolog/default.nix
index 245d48d1a595..58a853e66d88 100644
--- a/pkgs/development/compilers/scryer-prolog/default.nix
+++ b/pkgs/development/compilers/scryer-prolog/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-                ++ lib.optionals stdenv.isDarwin [
+                ++ lib.optionals stdenv.hostPlatform.isDarwin [
                   darwin.apple_sdk.frameworks.SystemConfiguration
                 ];
 
diff --git a/pkgs/development/compilers/shaderc/default.nix b/pkgs/development/compilers/shaderc/default.nix
index 968a3014fa40..97c50cde91e7 100644
--- a/pkgs/development/compilers/shaderc/default.nix
+++ b/pkgs/development/compilers/shaderc/default.nix
@@ -45,8 +45,8 @@ stdenv.mkDerivation rec {
   '';
 
   nativeBuildInputs = [ cmake python3 ]
-    ++ lib.optionals stdenv.isDarwin [ cctools ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ autoSignDarwinBinariesHook ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools ]
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ autoSignDarwinBinariesHook ];
 
   postInstall = ''
     moveToOutput "lib/*.a" $static
diff --git a/pkgs/development/compilers/smlnj/default.nix b/pkgs/development/compilers/smlnj/default.nix
index 26efb81e1686..000c59d67a38 100644
--- a/pkgs/development/compilers/smlnj/default.nix
+++ b/pkgs/development/compilers/smlnj/default.nix
@@ -3,7 +3,7 @@ let
   version = "110.95";
   baseurl = "http://smlnj.cs.uchicago.edu/dist/working/${version}";
 
-  arch = if stdenv.is64bit
+  arch = if stdenv.hostPlatform.is64bit
     then "64"
     else "32";
 
@@ -12,7 +12,7 @@ let
   boot64 = { url = "${baseurl}/boot.amd64-unix.tgz";
              sha256 = "1zn96a83kb6bn6228yfjsvb58m2qxw9k4j3qz0p9c8za479w4ch6"; };
 
-  bootBinary = if stdenv.is64bit
+  bootBinary = if stdenv.hostPlatform.is64bit
                then boot64
                else boot32;
 
@@ -51,7 +51,7 @@ in stdenv.mkDerivation {
     sed -i '/PATH=/d' config/_arch-n-opsys base/runtime/config/gen-posix-names.sh
     echo SRCARCHIVEURL="file:/$TMP" > config/srcarchiveurl
     patch --verbose config/_heap2exec ${./heap2exec.diff}
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Locate standard headers like <unistd.h>
     substituteInPlace base/runtime/config/gen-posix-names.sh \
       --replace "\$SDK_PATH/usr" "${Libsystem}"
@@ -89,6 +89,6 @@ in stdenv.mkDerivation {
     maintainers = with maintainers; [ thoughtpolice ];
     mainProgram = "sml";
     # never built on x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 }
diff --git a/pkgs/development/compilers/solc/default.nix b/pkgs/development/compilers/solc/default.nix
index 2147d59ffd93..73476c939ce8 100644
--- a/pkgs/development/compilers/solc/default.nix
+++ b/pkgs/development/compilers/solc/default.nix
@@ -8,7 +8,7 @@
 , python3
 , z3Support ? true
 , z3_4_11 ? null
-, cvc4Support ? gccStdenv.isLinux
+, cvc4Support ? gccStdenv.hostPlatform.isLinux
 , cvc4 ? null
 , cln ? null
 , gmp ? null
@@ -52,7 +52,7 @@ let
     maintainers = with maintainers; [ dbrock akru lionello sifmelcara ];
   };
 
-  solc = if gccStdenv.isLinux then gccStdenv.mkDerivation rec {
+  solc = if gccStdenv.hostPlatform.isLinux then gccStdenv.mkDerivation rec {
     inherit pname version meta;
 
     # upstream suggests avoid using archive generated by github
diff --git a/pkgs/development/compilers/souffle/default.nix b/pkgs/development/compilers/souffle/default.nix
index b851ac2c1403..f279ce475a4e 100644
--- a/pkgs/development/compilers/souffle/default.nix
+++ b/pkgs/development/compilers/souffle/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
     ./includes.patch
   ];
 
-  hardeningDisable = lib.optionals stdenv.isDarwin [ "strictoverflow" ];
+  hardeningDisable = lib.optionals stdenv.hostPlatform.isDarwin [ "strictoverflow" ];
 
   nativeBuildInputs = [ bison cmake flex mcpp doxygen graphviz makeWrapper perl ];
   buildInputs = [ bash-completion ncurses zlib sqlite libffi python3 ];
diff --git a/pkgs/development/compilers/spirv-llvm-translator/default.nix b/pkgs/development/compilers/spirv-llvm-translator/default.nix
index 20adaf5f559b..89e4452e7d4b 100644
--- a/pkgs/development/compilers/spirv-llvm-translator/default.nix
+++ b/pkgs/development/compilers/spirv-llvm-translator/default.nix
@@ -105,7 +105,7 @@ stdenv.mkDerivation {
 
   postInstall = ''
     install -D tools/llvm-spirv/llvm-spirv $out/bin/llvm-spirv
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool $out/bin/llvm-spirv \
       -change @rpath/libLLVMSPIRVLib.dylib $out/lib/libLLVMSPIRVLib.dylib
   '';
diff --git a/pkgs/development/compilers/swi-prolog/default.nix b/pkgs/development/compilers/swi-prolog/default.nix
index 628e69eb5bc9..c104cca2cfdb 100644
--- a/pkgs/development/compilers/swi-prolog/default.nix
+++ b/pkgs/development/compilers/swi-prolog/default.nix
@@ -74,7 +74,7 @@ let
   packInstall = swiplPath: pack:
     ''${swiplPath}/bin/swipl -g "pack_install(${pack}, [package_directory(\"${swiplPath}/lib/swipl/extra-pack\"), silent(true), interactive(false)])." -t "halt."
     '';
-  withGui' = withGui && !stdenv.isDarwin;
+  withGui' = withGui && !stdenv.hostPlatform.isDarwin;
   optionalDependencies = []
                          ++ (lib.optional withDb db)
                          ++ (lib.optional withJava jdk)
@@ -85,7 +85,7 @@ let
                          ++ (lib.optionals withGui' [ libXt libXext libXpm libXft libXinerama
                                                       libjpeg libSM freetype fontconfig
                                                     ])
-                         ++ (lib.optional stdenv.isDarwin Security)
+                         ++ (lib.optional stdenv.hostPlatform.isDarwin Security)
                          ++ extraLibraries';
 in
 stdenv.mkDerivation {
@@ -126,8 +126,8 @@ stdenv.mkDerivation {
   cmakeFlags = [ "-DSWIPL_INSTALL_IN_LIB=ON" ]
                ++ lib.optionals (!withNativeCompiler) [
                  # without these options, the build will embed full compiler paths
-                 "-DSWIPL_CC=${if stdenv.isDarwin then "clang" else "gcc"}"
-                 "-DSWIPL_CXX=${if stdenv.isDarwin then "clang++" else "g++"}"
+                 "-DSWIPL_CC=${if stdenv.hostPlatform.isDarwin then "clang" else "gcc"}"
+                 "-DSWIPL_CXX=${if stdenv.hostPlatform.isDarwin then "clang++" else "g++"}"
                ];
 
   preInstall = ''
diff --git a/pkgs/development/compilers/swift/compiler/default.nix b/pkgs/development/compilers/swift/compiler/default.nix
index d3e2017958fd..c74ee850f4a5 100644
--- a/pkgs/development/compilers/swift/compiler/default.nix
+++ b/pkgs/development/compilers/swift/compiler/default.nix
@@ -50,7 +50,7 @@ let
   sources = callPackage ../sources.nix { };
 
   # Tools invoked by swift at run-time.
-  runtimeDeps = lib.optionals stdenv.isDarwin [
+  runtimeDeps = lib.optionals stdenv.hostPlatform.isDarwin [
     # libtool is used for static linking. This is part of cctools, but adding
     # that as a build input puts an unwrapped linker in PATH, and breaks
     # builds. This small derivation exposes just libtool.
@@ -78,7 +78,7 @@ let
     else targetPlatform.parsed.kernel.name;
 
   # Apple Silicon uses a different CPU name in the target triple.
-  swiftArch = if stdenv.isDarwin && stdenv.isAarch64 then "arm64"
+  swiftArch = if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 then "arm64"
     else targetPlatform.parsed.cpu.name;
 
   # On Darwin, a `.swiftmodule` is a subdirectory in `lib/swift/<OS>`,
@@ -109,7 +109,7 @@ let
     "toolchain-tools"
     "toolchain-dev-tools"
     "license"
-    (if stdenv.isDarwin then "sourcekit-xpc-service" else "sourcekit-inproc")
+    (if stdenv.hostPlatform.isDarwin then "sourcekit-xpc-service" else "sourcekit-inproc")
     "swift-remote-mirror"
     "swift-remote-mirror-headers"
   ];
@@ -205,7 +205,7 @@ in stdenv.mkDerivation {
     makeClangWrapper
     makeSwiftcWrapper
   ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       xcbuild
       sigtool # codesign
       DarwinTools # sw_vers
@@ -218,10 +218,10 @@ in stdenv.mkDerivation {
     swig
     libxml2
   ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       libuuid
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreServices
       Foundation
       Combine
@@ -262,7 +262,7 @@ in stdenv.mkDerivation {
     ${copySource "swift-experimental-string-processing"}
     ${copySource "swift-syntax"}
     ${lib.optionalString
-      (!stdenv.isDarwin)
+      (!stdenv.hostPlatform.isDarwin)
       (copySource "swift-corelibs-libdispatch")}
 
     chmod -R u+w .
@@ -272,7 +272,7 @@ in stdenv.mkDerivation {
     # Just patch all the things for now, we can focus this later.
     # TODO: eliminate use of env.
     find -type f -print0 | xargs -0 sed -i \
-    ${lib.optionalString stdenv.isDarwin
+    ${lib.optionalString stdenv.hostPlatform.isDarwin
       "-e 's|/usr/libexec/PlistBuddy|${xcbuild}/bin/PlistBuddy|g'"} \
       -e 's|/usr/bin/env|${coreutils}/bin/env|g' \
       -e 's|/usr/bin/make|${gnumake}/bin/make|g' \
@@ -345,7 +345,7 @@ in stdenv.mkDerivation {
       hash = "sha256-nkRPWx8gNvYr7mlvEUiOAb1rTrf+skCZjAydJVUHrcI=";
     }}
 
-    ${lib.optionalString stdenv.isLinux ''
+    ${lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace llvm-project/clang/lib/Driver/ToolChains/Linux.cpp \
       --replace 'SysRoot + "/lib' '"${glibc}/lib" "' \
       --replace 'SysRoot + "/usr/lib' '"${glibc}/lib" "' \
@@ -384,7 +384,7 @@ in stdenv.mkDerivation {
 
     patchShebangs .
 
-    ${lib.optionalString (!stdenv.isDarwin) ''
+    ${lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     # NOTE: This interferes with ABI stability on Darwin, which uses the system
     # libraries in the hardcoded path /usr/lib/swift.
     fixCmakeFiles .
@@ -392,7 +392,7 @@ in stdenv.mkDerivation {
   '';
 
   # > clang-15-unwrapped: error: unsupported option '-fzero-call-used-regs=used-gpr' for target 'arm64-apple-macosx10.9.0'
-  hardeningDisable = lib.optional stdenv.isAarch64 "zerocallusedregs";
+  hardeningDisable = lib.optional stdenv.hostPlatform.isAarch64 "zerocallusedregs";
 
   configurePhase = ''
     export SWIFT_SOURCE_ROOT="$PWD"
@@ -451,7 +451,7 @@ in stdenv.mkDerivation {
     "
     buildProject llvm llvm-project/llvm
 
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Add appleSwiftCore to the search paths. We can't simply add it to
     # buildInputs, because it is potentially an older stdlib than the one we're
     # building. We have to remove it again after the main Swift build, or later
@@ -477,7 +477,7 @@ in stdenv.mkDerivation {
     #   Fixed in: https://github.com/apple/swift/commit/84083afef1de5931904d5c815d53856cdb3fb232
     cmakeFlags="
       -GNinja
-      -DBOOTSTRAPPING_MODE=BOOTSTRAPPING${lib.optionalString stdenv.isDarwin "-WITH-HOSTLIBS"}
+      -DBOOTSTRAPPING_MODE=BOOTSTRAPPING${lib.optionalString stdenv.hostPlatform.isDarwin "-WITH-HOSTLIBS"}
       -DSWIFT_ENABLE_EXPERIMENTAL_DIFFERENTIABLE_PROGRAMMING=ON
       -DSWIFT_ENABLE_EXPERIMENTAL_CONCURRENCY=ON
       -DSWIFT_ENABLE_EXPERIMENTAL_DISTRIBUTED=ON
@@ -490,11 +490,11 @@ in stdenv.mkDerivation {
       -DSWIFT_PATH_TO_SWIFT_SYNTAX_SOURCE=$SWIFT_SOURCE_ROOT/swift-syntax
       -DSWIFT_PATH_TO_STRING_PROCESSING_SOURCE=$SWIFT_SOURCE_ROOT/swift-experimental-string-processing
       -DSWIFT_INSTALL_COMPONENTS=${lib.concatStringsSep ";" swiftInstallComponents}
-      -DSWIFT_STDLIB_ENABLE_OBJC_INTEROP=${if stdenv.isDarwin then "ON" else "OFF"}
+      -DSWIFT_STDLIB_ENABLE_OBJC_INTEROP=${if stdenv.hostPlatform.isDarwin then "ON" else "OFF"}
     "
     buildProject swift
 
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Restore search paths to remove appleSwiftCore.
     export NIX_SWIFTFLAGS_COMPILE="$OLD_NIX_SWIFTFLAGS_COMPILE"
     export NIX_LDFLAGS="$OLD_NIX_LDFLAGS"
@@ -526,18 +526,18 @@ in stdenv.mkDerivation {
       -DLLDB_ENABLE_LUA=OFF
       -DLLDB_INCLUDE_TESTS=OFF
       -DCMAKE_BUILD_WITH_INSTALL_NAME_DIR=ON
-      ${lib.optionalString stdenv.isDarwin ''
+      ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       -DLLDB_USE_SYSTEM_DEBUGSERVER=ON
       ''}
       -DLibEdit_INCLUDE_DIRS=${libedit.dev}/include
       -DLibEdit_LIBRARIES=${libedit}/lib/libedit${stdenv.hostPlatform.extensions.sharedLibrary}
-      -DCURSES_INCLUDE_DIRS=${if stdenv.isDarwin then "/var/empty" else ncurses.dev}/include
+      -DCURSES_INCLUDE_DIRS=${if stdenv.hostPlatform.isDarwin then "/var/empty" else ncurses.dev}/include
       -DCURSES_LIBRARIES=${ncurses}/lib/libncurses${stdenv.hostPlatform.extensions.sharedLibrary}
       -DPANEL_LIBRARIES=${ncurses}/lib/libpanel${stdenv.hostPlatform.extensions.sharedLibrary}
     ";
     buildProject lldb llvm-project/lldb
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Need to do a standalone build of concurrency for Darwin back deployment.
     # Based on: utils/swift_build_support/swift_build_support/products/backdeployconcurrency.py
     cmakeFlags="
@@ -641,7 +641,7 @@ in stdenv.mkDerivation {
     cd $SWIFT_BUILD_ROOT/swift
     ninjaInstallPhase
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
     cd $SWIFT_BUILD_ROOT/swift-concurrency-backdeploy
     installTargets=install-back-deployment
     ninjaInstallPhase
@@ -669,20 +669,20 @@ in stdenv.mkDerivation {
     mkdir $lib/lib/swift/clang
     cp -P ${clang}/resource-root/* $lib/lib/swift/clang/
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Install required library for ObjC interop.
     # TODO: Is there no source code for this available?
     cp -r ${CLTools_Executables}/usr/lib/arc $out/lib/arc
     ''}
   '';
 
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     # This is cheesy, but helps the patchelf hook remove /build from RPATH.
     cd $SWIFT_BUILD_ROOT/..
     mv build buildx
   '';
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # These libraries need to use the system install name. The official SDK
     # does the same (as opposed to using rpath). Presumably, they are part of
     # the stable ABI. Not using the system libraries at run-time is known to
diff --git a/pkgs/development/compilers/swift/default.nix b/pkgs/development/compilers/swift/default.nix
index e55465e952d5..76db695b08c3 100644
--- a/pkgs/development/compilers/swift/default.nix
+++ b/pkgs/development/compilers/swift/default.nix
@@ -25,7 +25,7 @@ let
     #
     # The following selects the correct Clang version, matching the version
     # used in Swift, and applies the same libc overrides as `apple_sdk.stdenv`.
-    clang = if pkgs.stdenv.isDarwin
+    clang = if pkgs.stdenv.hostPlatform.isDarwin
       then
         swiftLlvmPackages.clang.override rec {
           libc = apple_sdk.Libsystem;
@@ -68,11 +68,11 @@ let
       useSwiftDriver = false;
     };
 
-    Dispatch = if stdenv.isDarwin
+    Dispatch = if stdenv.hostPlatform.isDarwin
       then null # part of libsystem
       else callPackage ./libdispatch { swift = swiftNoSwiftDriver; };
 
-    Foundation = if stdenv.isDarwin
+    Foundation = if stdenv.hostPlatform.isDarwin
       then apple_sdk.frameworks.Foundation
       else callPackage ./foundation { swift = swiftNoSwiftDriver; };
 
diff --git a/pkgs/development/compilers/swift/sourcekit-lsp/default.nix b/pkgs/development/compilers/swift/sourcekit-lsp/default.nix
index f0c08a41e43e..2d1cd6dd0440 100644
--- a/pkgs/development/compilers/swift/sourcekit-lsp/default.nix
+++ b/pkgs/development/compilers/swift/sourcekit-lsp/default.nix
@@ -21,7 +21,7 @@ let
   # are part of libsystem. Adding its headers to the search path causes strange
   # mixing and errors.
   # TODO: Find a better way to prevent this conflict.
-  ncursesInput = if stdenv.isDarwin then ncurses.out else ncurses;
+  ncursesInput = if stdenv.hostPlatform.isDarwin then ncurses.out else ncurses;
 in
 stdenv.mkDerivation {
   pname = "sourcekit-lsp";
@@ -35,7 +35,7 @@ stdenv.mkDerivation {
     XCTest
     sqlite
     ncursesInput
-  ] ++ lib.optionals stdenv.isDarwin [ CryptoKit LocalAuthentication ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ CryptoKit LocalAuthentication ];
 
   configurePhase = generated.configure + ''
     swiftpmMakeMutable indexstore-db
diff --git a/pkgs/development/compilers/swift/swift-docc/default.nix b/pkgs/development/compilers/swift/swift-docc/default.nix
index 2645f07aa4ec..13595882241b 100644
--- a/pkgs/development/compilers/swift/swift-docc/default.nix
+++ b/pkgs/development/compilers/swift/swift-docc/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ swift swiftpm ];
   buildInputs = [ Foundation XCTest ]
-    ++ lib.optionals stdenv.isDarwin [ CryptoKit LocalAuthentication ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CryptoKit LocalAuthentication ];
 
   configurePhase = generated.configure;
 
diff --git a/pkgs/development/compilers/swift/swift-driver/default.nix b/pkgs/development/compilers/swift/swift-driver/default.nix
index ca2b88046c86..03c7898fe112 100644
--- a/pkgs/development/compilers/swift/swift-driver/default.nix
+++ b/pkgs/development/compilers/swift/swift-driver/default.nix
@@ -19,7 +19,7 @@ let
   # are part of libsystem. Adding its headers to the search path causes strange
   # mixing and errors.
   # TODO: Find a better way to prevent this conflict.
-  ncursesInput = if stdenv.isDarwin then ncurses.out else ncurses;
+  ncursesInput = if stdenv.hostPlatform.isDarwin then ncurses.out else ncurses;
 in
 stdenv.mkDerivation {
   pname = "swift-driver";
diff --git a/pkgs/development/compilers/swift/swiftpm/default.nix b/pkgs/development/compilers/swift/swiftpm/default.nix
index 712bc01777a5..b8d8d2fe7bba 100644
--- a/pkgs/development/compilers/swift/swiftpm/default.nix
+++ b/pkgs/development/compilers/swift/swiftpm/default.nix
@@ -81,7 +81,7 @@ let
 
   # Tools invoked by swiftpm at run-time.
   runtimeDeps = [ git ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       xcbuild.xcrun
       # These tools are part of cctools, but adding that as a build input puts
       # an unwrapped linker in PATH, and breaks builds. This small derivation
@@ -99,13 +99,13 @@ let
   mkBootstrapDerivation = attrs: stdenv.mkDerivation (attrs // {
     nativeBuildInputs = (attrs.nativeBuildInputs or [ ])
       ++ [ cmake ninja swift ]
-      ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
 
     buildInputs = (attrs.buildInputs or [ ])
       ++ [ Foundation ];
 
     postPatch = (attrs.postPatch or "")
-      + lib.optionalString stdenv.isDarwin ''
+      + lib.optionalString stdenv.hostPlatform.isDarwin ''
         # On Darwin only, Swift uses arm64 as cpu arch.
         if [ -e cmake/modules/SwiftSupport.cmake ]; then
           substituteInPlace cmake/modules/SwiftSupport.cmake \
@@ -121,7 +121,7 @@ let
       '';
 
     postInstall = (attrs.postInstall or "")
-      + lib.optionalString stdenv.isDarwin ''
+      + lib.optionalString stdenv.hostPlatform.isDarwin ''
         # The install name of libraries is incorrectly set to lib/ (via our
         # CMake setup hook) instead of lib/swift/. This'd be easily fixed by
         # fixDarwinDylibNames, but some builds create libraries that reference
@@ -149,7 +149,7 @@ let
   # are part of libsystem. Adding its headers to the search path causes strange
   # mixing and errors.
   # TODO: Find a better way to prevent this conflict.
-  ncursesInput = if stdenv.isDarwin then ncurses.out else ncurses;
+  ncursesInput = if stdenv.hostPlatform.isDarwin then ncurses.out else ncurses;
 
   # Derivations for bootstrapping dependencies using CMake.
   # This is based on the `swiftpm/Utilities/bootstrap` script.
@@ -168,7 +168,7 @@ let
     src = generated.sources.swift-system;
 
     postInstall = cmakeGlue.SwiftSystem
-      + lib.optionalString (!stdenv.isDarwin) ''
+      + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
         # The cmake rules apparently only use the Darwin install convention.
         # Fix up the installation so the module can be found on non-Darwin.
         mkdir -p $out/${swiftStaticModuleSubdir}
@@ -188,7 +188,7 @@ let
     '';
 
     postInstall = cmakeGlue.SwiftCollections
-      + lib.optionalString (!stdenv.isDarwin) ''
+      + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
         # The cmake rules apparently only use the Darwin install convention.
         # Fix up the installation so the module can be found on non-Darwin.
         mkdir -p $out/${swiftStaticModuleSubdir}
@@ -245,7 +245,7 @@ let
     ];
 
     postInstall = cmakeGlue.ArgumentParser
-      + lib.optionalString stdenv.isLinux ''
+      + lib.optionalString stdenv.hostPlatform.isLinux ''
         # Fix rpath so ArgumentParserToolInfo can be found.
         patchelf --add-rpath "$out/lib/swift/${swiftOs}" \
           $out/lib/swift/${swiftOs}/libArgumentParser.so
@@ -266,7 +266,7 @@ let
     name = "llbuild";
     src = generated.sources.swift-llbuild;
 
-    nativeBuildInputs = lib.optional stdenv.isDarwin xcbuild;
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin xcbuild;
     buildInputs = [ ncursesInput sqlite ];
 
     patches = [
@@ -389,7 +389,7 @@ in stdenv.mkDerivation (commonAttrs // {
     sqlite
     XCTest
   ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CryptoKit
       LocalAuthentication
     ];
diff --git a/pkgs/development/compilers/swift/xctest/default.nix b/pkgs/development/compilers/swift/xctest/default.nix
index d50d11706cbd..f6f4cdacaed1 100644
--- a/pkgs/development/compilers/swift/xctest/default.nix
+++ b/pkgs/development/compilers/swift/xctest/default.nix
@@ -19,10 +19,10 @@ in stdenv.mkDerivation {
   outputs = [ "out" ];
 
   nativeBuildInputs = [ cmake ninja swift ]
-    ++ lib.optional stdenv.isDarwin DarwinTools; # sw_vers
+    ++ lib.optional stdenv.hostPlatform.isDarwin DarwinTools; # sw_vers
   buildInputs = [ Foundation ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # On Darwin only, Swift uses arm64 as cpu arch.
     substituteInPlace cmake/modules/SwiftSupport.cmake \
       --replace '"aarch64" PARENT_SCOPE' '"arm64" PARENT_SCOPE'
@@ -34,9 +34,9 @@ in stdenv.mkDerivation {
     export MACOSX_DEPLOYMENT_TARGET=10.12
   '';
 
-  cmakeFlags = lib.optional stdenv.isDarwin "-DUSE_FOUNDATION_FRAMEWORK=ON";
+  cmakeFlags = lib.optional stdenv.hostPlatform.isDarwin "-DUSE_FOUNDATION_FRAMEWORK=ON";
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Darwin normally uses the Xcode version of XCTest. Installing
     # swift-corelibs-xctest is probably not officially supported, but we have
     # no alternative. Fix up the installation here.
diff --git a/pkgs/development/compilers/temurin-bin/jdk-linux-base.nix b/pkgs/development/compilers/temurin-bin/jdk-linux-base.nix
index 9da96aee8d5a..29cdf778f541 100644
--- a/pkgs/development/compilers/temurin-bin/jdk-linux-base.nix
+++ b/pkgs/development/compilers/temurin-bin/jdk-linux-base.nix
@@ -66,7 +66,7 @@ let
       xorg.libXrender
       xorg.libXtst
       zlib
-    ] ++ lib.optional stdenv.isAarch32 libffi;
+    ] ++ lib.optional stdenv.hostPlatform.isAarch32 libffi;
 
     nativeBuildInputs = [ autoPatchelfHook makeWrapper ];
 
diff --git a/pkgs/development/compilers/terra/default.nix b/pkgs/development/compilers/terra/default.nix
index 1d50d6e23ddb..4193ab53164c 100644
--- a/pkgs/development/compilers/terra/default.nix
+++ b/pkgs/development/compilers/terra/default.nix
@@ -45,8 +45,8 @@ in stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
   buildInputs = [ llvmMerged ncurses libffi libxml2 ]
     ++ lib.optionals enableCUDA [ cuda ]
-    ++ lib.optional (!stdenv.isDarwin) libpfm
-    ++ lib.optionals stdenv.isDarwin [ libobjc Cocoa Foundation ];
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) libpfm
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libobjc Cocoa Foundation ];
 
   cmakeFlags = let
     resourceDir = "${llvmMerged}/lib/clang/" + (
@@ -100,6 +100,6 @@ in stdenv.mkDerivation rec {
     # never built on aarch64-darwin since first introduction in nixpkgs
     # Linux Aarch64 broken above LLVM11
     # https://github.com/terralang/terra/issues/597
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/compilers/tinycc/default.nix b/pkgs/development/compilers/tinycc/default.nix
index b36eb44229d1..65eea0a48e46 100644
--- a/pkgs/development/compilers/tinycc/default.nix
+++ b/pkgs/development/compilers/tinycc/default.nix
@@ -72,7 +72,7 @@ stdenv.mkDerivation (finalAttrs: {
       builtins.match "^[0-9]\\.+[0-9]+\\.[0-9]+" version != null;
   in ''
     ${
-      if stdenv.isDarwin && ! versionIsClean finalAttrs.version
+      if stdenv.hostPlatform.isDarwin && ! versionIsClean finalAttrs.version
       then "echo 'not overwriting VERSION since it would upset ld'"
       else "echo ${finalAttrs.version} > VERSION"
     }
@@ -89,7 +89,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   checkTarget = "test";
   # https://www.mail-archive.com/tinycc-devel@nongnu.org/msg10142.html
-  preCheck = lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) ''
+  preCheck = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) ''
     rm tests/tests2/{108,114}*
   '';
 
@@ -122,7 +122,7 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with lib.maintainers; [ joachifm AndersonTorres ];
     platforms = lib.platforms.unix;
     # https://www.mail-archive.com/tinycc-devel@nongnu.org/msg10199.html
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 })
 # TODO: more multiple outputs
diff --git a/pkgs/development/compilers/tinygo/default.nix b/pkgs/development/compilers/tinygo/default.nix
index a32e516633a8..386322780cca 100644
--- a/pkgs/development/compilers/tinygo/default.nix
+++ b/pkgs/development/compilers/tinygo/default.nix
@@ -54,7 +54,7 @@ buildGoModule rec {
   nativeCheckInputs = [ binaryen ];
   nativeBuildInputs = [ makeWrapper lld ];
   buildInputs = [ llvm clang.cc ]
-    ++ lib.optionals stdenv.isDarwin [ xar ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ xar ];
 
   doCheck = (stdenv.buildPlatform.canExecute stdenv.hostPlatform);
   inherit tinygoTests;
@@ -112,7 +112,7 @@ buildGoModule rec {
 
   # GDB upstream does not support ARM darwin
   runtimeDeps = [ go clang.cc lld avrdude openocd binaryen ]
-    ++ lib.optionals (!(stdenv.isDarwin && stdenv.isAarch64)) [ gdb ];
+    ++ lib.optionals (!(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)) [ gdb ];
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/development/compilers/uasm/default.nix b/pkgs/development/compilers/uasm/default.nix
index 21d9a2bf5d48..59332fa41f03 100644
--- a/pkgs/development/compilers/uasm/default.nix
+++ b/pkgs/development/compilers/uasm/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   makefile =
-    if stdenv.isDarwin then
+    if stdenv.hostPlatform.isDarwin then
       "ClangOSX64.mak"
     else
       "gccLinux64.mak";
diff --git a/pkgs/development/compilers/unison/default.nix b/pkgs/development/compilers/unison/default.nix
index 2dd2b7a15897..5a8e57d2131b 100644
--- a/pkgs/development/compilers/unison/default.nix
+++ b/pkgs/development/compilers/unison/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation (finalAttrs: {
   pname = "unison-code-manager";
   version = "0.5.26";
 
-  src = if stdenv.isDarwin then
+  src = if stdenv.hostPlatform.isDarwin then
     fetchurl {
       url = "https://github.com/unisonweb/unison/releases/download/release/${finalAttrs.version}/ucm-macos.tar.gz";
       hash = "sha256-RF2Q5sCxT9F3IGM/8UP6bEe9sOjtpMVYHREuAPOzh8g=";
@@ -32,8 +32,8 @@ stdenv.mkDerivation (finalAttrs: {
   dontConfigure = true;
 
   nativeBuildInputs = [ makeWrapper ]
-    ++ lib.optional (!stdenv.isDarwin) autoPatchelfHook;
-  buildInputs = lib.optionals (!stdenv.isDarwin) [ gmp ncurses6 zlib ];
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) autoPatchelfHook;
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ gmp ncurses6 zlib ];
 
   installPhase = ''
     mkdir -p $out/{bin,lib}
diff --git a/pkgs/development/compilers/vala/default.nix b/pkgs/development/compilers/vala/default.nix
index 1b880b61a05a..96b995d64b6c 100644
--- a/pkgs/development/compilers/vala/default.nix
+++ b/pkgs/development/compilers/vala/default.nix
@@ -50,7 +50,7 @@ let
 
     nativeBuildInputs = [
       pkg-config flex bison libxslt gobject-introspection
-    ] ++ lib.optional (stdenv.isDarwin) expat
+    ] ++ lib.optional (stdenv.hostPlatform.isDarwin) expat
       ++ lib.optional disableGraphviz autoreconfHook # if we changed our ./configure script, need to reconfigure
       ++ lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [ vala ]
       ++ extraNativeBuildInputs;
diff --git a/pkgs/development/compilers/vlang/default.nix b/pkgs/development/compilers/vlang/default.nix
index a0acfd263474..267f473274a5 100644
--- a/pkgs/development/compilers/vlang/default.nix
+++ b/pkgs/development/compilers/vlang/default.nix
@@ -19,7 +19,7 @@ let
     };
 
     # patch the ptrace reference for darwin
-    installPhase = lib.optionalString stdenv.isDarwin ''
+    installPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace v.c \
         --replace "#include <sys/ptrace.h>" "${ptraceSubstitution}"
     '' + ''
@@ -56,9 +56,9 @@ stdenv.mkDerivation {
 
   buildInputs = [
     binaryen
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     xorg.libX11
     xorg.libXau
     xorg.libXdmcp
diff --git a/pkgs/development/compilers/yap/default.nix b/pkgs/development/compilers/yap/default.nix
index db7d9b05b7fb..d58f2e9d728d 100644
--- a/pkgs/development/compilers/yap/default.nix
+++ b/pkgs/development/compilers/yap/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     # the linux 32 bit build fails.
-    broken = (stdenv.isLinux && stdenv.isAarch64) || !stdenv.is64bit;
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || !stdenv.hostPlatform.is64bit;
     homepage = "http://www.dcc.fc.up.pt/~vsc/Yap/";
     description = "ISO-compatible high-performance Prolog compiler";
     license = lib.licenses.artistic2;
diff --git a/pkgs/development/compilers/zig/0.12/default.nix b/pkgs/development/compilers/zig/0.12/default.nix
index 1a730d4c0ce7..f359140df234 100644
--- a/pkgs/development/compilers/zig/0.12/default.nix
+++ b/pkgs/development/compilers/zig/0.12/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation (finalAttrs: {
   # /System/Library/CoreServices/.SystemVersionPlatform.plist to determine the
   # OS version. This causes the build to fail during stage 3 with
   # OSVersionDetectionFail when the sandbox is enabled.
-  __impureHostDeps = lib.optionals stdenv.isDarwin [
+  __impureHostDeps = lib.optionals stdenv.hostPlatform.isDarwin [
     "/System/Library/CoreServices/.SystemVersionPlatform.plist"
     "/System/Library/CoreServices/SystemVersion.plist"
   ];
diff --git a/pkgs/development/compilers/zig/0.13/default.nix b/pkgs/development/compilers/zig/0.13/default.nix
index 43093c822f02..8ec68f20260f 100644
--- a/pkgs/development/compilers/zig/0.13/default.nix
+++ b/pkgs/development/compilers/zig/0.13/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation (finalAttrs: {
   # /System/Library/CoreServices/.SystemVersionPlatform.plist to determine the
   # OS version. This causes the build to fail during stage 3 with
   # OSVersionDetectionFail when the sandbox is enabled.
-  __impureHostDeps = lib.optionals stdenv.isDarwin [
+  __impureHostDeps = lib.optionals stdenv.hostPlatform.isDarwin [
     "/System/Library/CoreServices/.SystemVersionPlatform.plist"
     "/System/Library/CoreServices/SystemVersion.plist"
   ];
diff --git a/pkgs/development/compilers/zig/generic.nix b/pkgs/development/compilers/zig/generic.nix
index cde1a61e3583..27c193c0567d 100644
--- a/pkgs/development/compilers/zig/generic.nix
+++ b/pkgs/development/compilers/zig/generic.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation (finalAttrs: {
   # /System/Library/CoreServices/.SystemVersionPlatform.plist to determine the
   # OS version. This causes the build to fail during stage 3 with
   # OSVersionDetectionFail when the sandbox is enabled.
-  __impureHostDeps = lib.optionals stdenv.isDarwin [
+  __impureHostDeps = lib.optionals stdenv.hostPlatform.isDarwin [
     "/System/Library/CoreServices/.SystemVersionPlatform.plist"
     "/System/Library/CoreServices/SystemVersion.plist"
   ];
diff --git a/pkgs/development/compilers/zulu/common.nix b/pkgs/development/compilers/zulu/common.nix
index c9056236ea6a..f1d0f43325f4 100644
--- a/pkgs/development/compilers/zulu/common.nix
+++ b/pkgs/development/compilers/zulu/common.nix
@@ -16,7 +16,7 @@
   # runtime dependencies
 , cups
   # runtime dependencies for GTK+ Look and Feel
-, gtkSupport ? stdenv.isLinux
+, gtkSupport ? stdenv.hostPlatform.isLinux
 , cairo
 , glib
 , gtk2
@@ -48,7 +48,7 @@ let
     gtk3
   ] ++ lib.optionals (gtkSupport && lib.versionOlder dist.jdkVersion "17") [
     gtk2
-  ] ++ lib.optionals (stdenv.isLinux && enableJavaFX) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && enableJavaFX) [
     ffmpeg.lib
   ];
 
@@ -75,12 +75,12 @@ let
 
     nativeBuildInputs = [
       unzip
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       autoPatchelfHook
       makeWrapper
     ];
 
-    buildInputs = lib.optionals stdenv.isLinux [
+    buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
       alsa-lib # libasound.so wanted by lib/libjsound.so
       fontconfig
       freetype
@@ -92,9 +92,9 @@ let
       xorg.libXtst
       xorg.libXxf86vm
       zlib
-    ] ++ lib.optionals (stdenv.isLinux && enableJavaFX) runtimeDependencies;
+    ] ++ lib.optionals (stdenv.hostPlatform.isLinux && enableJavaFX) runtimeDependencies;
 
-    autoPatchelfIgnoreMissingDeps = if (stdenv.isLinux && enableJavaFX) then [
+    autoPatchelfIgnoreMissingDeps = if (stdenv.hostPlatform.isLinux && enableJavaFX) then [
       "libavcodec*.so.*"
       "libavformat*.so.*"
     ] else null;
@@ -126,7 +126,7 @@ let
       cat <<EOF >> $out/nix-support/setup-hook
       if [ -z "\''${JAVA_HOME-}" ]; then export JAVA_HOME=$out; fi
       EOF
-    '' + lib.optionalString stdenv.isLinux ''
+    '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       # We cannot use -exec since wrapProgram is a function but not a command.
       #
       # jspawnhelper is executed from JVM, so it doesn't need to wrap it, and it
@@ -138,14 +138,14 @@ let
       done
     ''
     # FIXME: move all of the above to installPhase.
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       find "$out" -name libfontmanager.so -exec \
         patchelf --add-needed libfontconfig.so {} \;
     '';
 
     # fixupPhase is moving the man to share/man which breaks it because it's a
     # relative symlink.
-    postFixup = lib.optionalString stdenv.isDarwin ''
+    postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
       ln -nsf ../zulu-${lib.versions.major version}.jdk/Contents/Home/man $out/share/man
     '';
 
diff --git a/pkgs/development/embedded/arduino/arduino-language-server/default.nix b/pkgs/development/embedded/arduino/arduino-language-server/default.nix
index 6c0a2885b433..d1be96454eec 100644
--- a/pkgs/development/embedded/arduino/arduino-language-server/default.nix
+++ b/pkgs/development/embedded/arduino/arduino-language-server/default.nix
@@ -26,7 +26,7 @@ buildGoModule rec {
     "-w"
     "-X github.com/arduino/arduino-language-server/version.versionString=${version}"
     "-X github.com/arduino/arduino-language-server/version.commit=unknown"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-extldflags '-static'"
   ];
 
diff --git a/pkgs/development/embedded/blisp/default.nix b/pkgs/development/embedded/blisp/default.nix
index ba1f42a90b0d..b6add8db9b8a 100644
--- a/pkgs/development/embedded/blisp/default.nix
+++ b/pkgs/development/embedded/blisp/default.nix
@@ -25,14 +25,14 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     argtable
     libserialport
-  ] ++ lib.optional stdenv.isDarwin IOKit;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin IOKit;
 
   cmakeFlags = [
     "-DBLISP_BUILD_CLI=ON"
     "-DBLISP_USE_SYSTEM_LIBRARIES=ON"
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-error=implicit-function-declaration";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-error=implicit-function-declaration";
 
   passthru.tests.version = testers.testVersion {
     package = finalAttrs.finalPackage;
diff --git a/pkgs/development/embedded/bossa/default.nix b/pkgs/development/embedded/bossa/default.nix
index 3f55ccdd2e8b..f50b91ddbb09 100644
--- a/pkgs/development/embedded/bossa/default.nix
+++ b/pkgs/development/embedded/bossa/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
     wxGTK32
     libX11
     readline
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
   ];
 
diff --git a/pkgs/development/embedded/easypdkprog/default.nix b/pkgs/development/embedded/easypdkprog/default.nix
index 28f06db9f35d..4e9b8f1722bc 100644
--- a/pkgs/development/embedded/easypdkprog/default.nix
+++ b/pkgs/development/embedded/easypdkprog/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   installPhase = ''
     install -Dm755 -t $out/bin easypdkprog
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     install -Dm644 -t $out/etc/udev/rules.d Linux_udevrules/70-stm32vcp.rules
   '';
 
diff --git a/pkgs/development/embedded/edl/default.nix b/pkgs/development/embedded/edl/default.nix
index 570fda02d8e5..77ac43762492 100644
--- a/pkgs/development/embedded/edl/default.nix
+++ b/pkgs/development/embedded/edl/default.nix
@@ -57,6 +57,6 @@ python3Packages.buildPythonPackage {
       xddxdd
     ];
     # Case-sensitive files in 'Loader' submodule
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/embedded/elf2uf2-rs/default.nix b/pkgs/development/embedded/elf2uf2-rs/default.nix
index b3091df1e3f6..239ffbbeb96b 100644
--- a/pkgs/development/embedded/elf2uf2-rs/default.nix
+++ b/pkgs/development/embedded/elf2uf2-rs/default.nix
@@ -13,8 +13,8 @@ rustPlatform.buildRustPackage rec {
     pkg-config
   ];
 
-  buildInputs = lib.optional stdenv.isLinux udev
-    ++ lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux udev
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreFoundation
       DiskArbitration
       Foundation
diff --git a/pkgs/development/embedded/fpga/ecpdap/default.nix b/pkgs/development/embedded/fpga/ecpdap/default.nix
index ef1ba75c45b1..6d43f107563a 100644
--- a/pkgs/development/embedded/fpga/ecpdap/default.nix
+++ b/pkgs/development/embedded/fpga/ecpdap/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ libusb1 ]
-    ++ lib.optional stdenv.isDarwin AppKit;
+    ++ lib.optional stdenv.hostPlatform.isDarwin AppKit;
 
   postInstall = ''
     mkdir -p $out/etc/udev/rules.d
diff --git a/pkgs/development/embedded/fpga/fujprog/default.nix b/pkgs/development/embedded/fpga/fujprog/default.nix
index 69c23f2a71cd..bdac1033053a 100644
--- a/pkgs/development/embedded/fpga/fujprog/default.nix
+++ b/pkgs/development/embedded/fpga/fujprog/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     libftdi1
     libusb-compat-0_1
-  ] ++ lib.optionals stdenv.isDarwin [ IOKit ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit ];
 
   meta = with lib; {
     description = "JTAG programmer for the ULX3S and ULX2S open hardware FPGA development boards";
diff --git a/pkgs/development/embedded/fpga/trellis/default.nix b/pkgs/development/embedded/fpga/trellis/default.nix
index b652f57fa81a..5726465311e5 100644
--- a/pkgs/development/embedded/fpga/trellis/default.nix
+++ b/pkgs/development/embedded/fpga/trellis/default.nix
@@ -42,7 +42,7 @@ in stdenv.mkDerivation rec {
     cd libtrellis
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     for f in $out/bin/* ; do
       install_name_tool -change "$out/lib/libtrellis.dylib" "$out/lib/trellis/libtrellis.dylib" "$f"
     done
diff --git a/pkgs/development/embedded/openocd/default.nix b/pkgs/development/embedded/openocd/default.nix
index 366d1ed832c2..86dfd687ed2f 100644
--- a/pkgs/development/embedded/openocd/default.nix
+++ b/pkgs/development/embedded/openocd/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     ++ lib.optionals notWindows [ hidapi jimtcl libftdi1 libjaylink ]
     ++
     # tracking issue for v2 api changes https://sourceforge.net/p/openocd/tickets/306/
-    lib.optional stdenv.isLinux libgpiod_1;
+    lib.optional stdenv.hostPlatform.isLinux libgpiod_1;
 
   configureFlags = [
     "--disable-werror"
@@ -41,8 +41,8 @@ stdenv.mkDerivation rec {
     "--enable-remote-bitbang"
     (lib.enableFeature notWindows "buspirate")
     (lib.enableFeature (notWindows && enableFtdi) "ftdi")
-    (lib.enableFeature stdenv.isLinux "linuxgpiod")
-    (lib.enableFeature stdenv.isLinux "sysfsgpio")
+    (lib.enableFeature stdenv.hostPlatform.isLinux "linuxgpiod")
+    (lib.enableFeature stdenv.hostPlatform.isLinux "sysfsgpio")
     (lib.enableFeature isWindows "internal-jimtcl")
     (lib.enableFeature isWindows "internal-libjaylink")
   ] ++
@@ -56,7 +56,7 @@ stdenv.mkDerivation rec {
     "-Wno-error=strict-prototypes" # fixes build failure with hidapi 0.10.0
   ]);
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     mkdir -p "$out/etc/udev/rules.d"
     rules="$out/share/openocd/contrib/60-openocd.rules"
     if [ ! -f "$rules" ]; then
diff --git a/pkgs/development/embedded/platformio/core.nix b/pkgs/development/embedded/platformio/core.nix
index 6890a2b1b35e..eb20e0f6a3e7 100644
--- a/pkgs/development/embedded/platformio/core.nix
+++ b/pkgs/development/embedded/platformio/core.nix
@@ -79,7 +79,7 @@ with python3Packages; buildPythonApplication rec {
     uvicorn
     wsproto
     zeroconf
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     chardet
   ];
 
diff --git a/pkgs/development/gnuradio-modules/ais/default.nix b/pkgs/development/gnuradio-modules/ais/default.nix
index 66a6e82fff8b..a86fce043d97 100644
--- a/pkgs/development/gnuradio-modules/ais/default.nix
+++ b/pkgs/development/gnuradio-modules/ais/default.nix
@@ -60,7 +60,7 @@ mkDerivation rec {
     platforms = platforms.unix;
     # rpcserver_aggregator.h:111:54: error: no template named 'unary_function'
     # in namespace 'std'; did you mean '__unary_function'?
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ mog ];
   };
 }
diff --git a/pkgs/development/gnuradio-modules/osmosdr/default.nix b/pkgs/development/gnuradio-modules/osmosdr/default.nix
index dbf7513cacc1..663ffafd7f3b 100644
--- a/pkgs/development/gnuradio-modules/osmosdr/default.nix
+++ b/pkgs/development/gnuradio-modules/osmosdr/default.nix
@@ -71,7 +71,7 @@ in mkDerivation {
   ] ++ lib.optionals (gnuradio.hasFeature "python-support") [
       python.pkgs.numpy
       python.pkgs.pybind11
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.IOKit
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/development/guile-modules/guile-gcrypt/default.nix b/pkgs/development/guile-modules/guile-gcrypt/default.nix
index ff31b009da31..3b6aa220ae92 100644
--- a/pkgs/development/guile-modules/guile-gcrypt/default.nix
+++ b/pkgs/development/guile-modules/guile-gcrypt/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   # In procedure bytevector-u8-ref: Argument 2 out of range
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Bindings to Libgcrypt for GNU Guile";
diff --git a/pkgs/development/guile-modules/guile-git/default.nix b/pkgs/development/guile-modules/guile-git/default.nix
index b91d13a63745..f092238929bf 100644
--- a/pkgs/development/guile-modules/guile-git/default.nix
+++ b/pkgs/development/guile-modules/guile-git/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   propagatedBuildInputs = [
     libgit2 scheme-bytestructures
   ];
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   makeFlags = [ "GUILE_AUTO_COMPILE=0" ];
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/guile-modules/guile-lib/default.nix b/pkgs/development/guile-modules/guile-lib/default.nix
index 1e5ddbd49143..5143c959ccd5 100644
--- a/pkgs/development/guile-modules/guile-lib/default.nix
+++ b/pkgs/development/guile-modules/guile-lib/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [ "GUILE_AUTO_COMPILE=0" ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   preCheck = ''
     # Make `libgcc_s.so' visible for `pthread_cancel'.
diff --git a/pkgs/development/guile-modules/guile-ssh/default.nix b/pkgs/development/guile-modules/guile-ssh/default.nix
index a1928c78ce75..ad3a8c547442 100644
--- a/pkgs/development/guile-modules/guile-ssh/default.nix
+++ b/pkgs/development/guile-modules/guile-ssh/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation (finalAttrs: {
   enableParallelBuilding = true;
 
   # FAIL: server-client.scm
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postInstall = ''
     mv $out/bin/*.scm $out/share/guile-ssh
diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 3abbd578e5c4..e1d70248acfb 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -387,7 +387,7 @@ self: super: {
   numerals-base = dontCheck (doJailbreak super.numerals-base);
 
   # This test keeps being aborted because it runs too quietly for too long
-  Lazy-Pbkdf2 = if pkgs.stdenv.isi686 then dontCheck super.Lazy-Pbkdf2 else super.Lazy-Pbkdf2;
+  Lazy-Pbkdf2 = if pkgs.stdenv.hostPlatform.isi686 then dontCheck super.Lazy-Pbkdf2 else super.Lazy-Pbkdf2;
 
   # check requires mysql server
   mysql-simple = dontCheck super.mysql-simple;
@@ -901,12 +901,12 @@ self: super: {
   Cabal-ide-backend = dontCheck super.Cabal-ide-backend;
 
   # This package can't be built on non-Windows systems.
-  Win32 = overrideCabal (drv: { broken = !pkgs.stdenv.isCygwin; }) super.Win32;
+  Win32 = overrideCabal (drv: { broken = !pkgs.stdenv.hostPlatform.isCygwin; }) super.Win32;
   inline-c-win32 = dontDistribute super.inline-c-win32;
   Southpaw = dontDistribute super.Southpaw;
 
   # https://ghc.haskell.org/trac/ghc/ticket/9825
-  vimus = overrideCabal (drv: { broken = pkgs.stdenv.isLinux && pkgs.stdenv.isi686; }) super.vimus;
+  vimus = overrideCabal (drv: { broken = pkgs.stdenv.hostPlatform.isLinux && pkgs.stdenv.hostPlatform.isi686; }) super.vimus;
 
   # https://github.com/kazu-yamamoto/logger/issues/42
   logger = dontCheck super.logger;
diff --git a/pkgs/development/haskell-modules/configuration-darwin.nix b/pkgs/development/haskell-modules/configuration-darwin.nix
index 5933627583a6..0c5b9106643e 100644
--- a/pkgs/development/haskell-modules/configuration-darwin.nix
+++ b/pkgs/development/haskell-modules/configuration-darwin.nix
@@ -359,7 +359,7 @@ self: super: ({
     '';
   }) super.di-core;
 
-} // lib.optionalAttrs pkgs.stdenv.isAarch64 {  # aarch64-darwin
+} // lib.optionalAttrs pkgs.stdenv.hostPlatform.isAarch64 {  # aarch64-darwin
 
   # Workarounds for justStaticExecutables on aarch64-darwin. Since dead code
   # elimination barely works on aarch64-darwin, any package that has a
@@ -429,7 +429,7 @@ self: super: ({
   rivet-adaptor-postgresql = dontCheck super.rivet-adaptor-postgresql;
   tmp-proc-postgres = dontCheck super.tmp-proc-postgres;
 
-} // lib.optionalAttrs pkgs.stdenv.isx86_64 {  # x86_64-darwin
+} // lib.optionalAttrs pkgs.stdenv.hostPlatform.isx86_64 {  # x86_64-darwin
 
   # tests appear to be failing to link or something:
   # https://hydra.nixos.org/build/174540882/nixlog/9
diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index 8477d68dfaf5..6400e5246aea 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -300,7 +300,7 @@ self: super: builtins.intersectAttrs super {
     [ (disableHardening ["fortify"])
       (addBuildTool self.buildHaskellPackages.gtk2hs-buildtools)
     ] ++
-    ( if pkgs.stdenv.isDarwin then [(appendConfigureFlag "-fhave-quartz-gtk")] else [] )
+    ( if pkgs.stdenv.hostPlatform.isDarwin then [(appendConfigureFlag "-fhave-quartz-gtk")] else [] )
   );
   gtksourceview2 = addPkgconfigDepend pkgs.gtk2 super.gtksourceview2;
   gtk-traymanager = addPkgconfigDepend pkgs.gtk3 super.gtk-traymanager;
@@ -585,7 +585,7 @@ self: super: builtins.intersectAttrs super {
   #
   # Additional note: nixpkgs' freeglut and macOS's OpenGL implementation do not cooperate,
   # so disable this on Darwin only
-  ${if pkgs.stdenv.isDarwin then null else "GLUT"} = overrideCabal (drv: {
+  ${if pkgs.stdenv.hostPlatform.isDarwin then null else "GLUT"} = overrideCabal (drv: {
     pkg-configDepends = drv.pkg-configDepends or [] ++ [
       pkgs.freeglut
     ];
@@ -823,9 +823,9 @@ self: super: builtins.intersectAttrs super {
     # https://git-annex.branchable.com/git-annex-shell/
     passthru.shellPath = "/bin/git-annex-shell";
   }) (super.git-annex.override {
-    dbus = if pkgs.stdenv.isLinux then self.dbus else null;
-    fdo-notify = if pkgs.stdenv.isLinux then self.fdo-notify else null;
-    hinotify = if pkgs.stdenv.isLinux then self.hinotify else self.fsnotify;
+    dbus = if pkgs.stdenv.hostPlatform.isLinux then self.dbus else null;
+    fdo-notify = if pkgs.stdenv.hostPlatform.isLinux then self.fdo-notify else null;
+    hinotify = if pkgs.stdenv.hostPlatform.isLinux then self.hinotify else self.fsnotify;
   });
 
   # The test suite has undeclared dependencies on git.
diff --git a/pkgs/development/haskell-modules/generic-builder.nix b/pkgs/development/haskell-modules/generic-builder.nix
index 23dc5054a854..92c2451a5df1 100644
--- a/pkgs/development/haskell-modules/generic-builder.nix
+++ b/pkgs/development/haskell-modules/generic-builder.nix
@@ -53,7 +53,7 @@ in
 # TODO enable shared libs for cross-compiling
 , enableSharedExecutables ? false
 , enableSharedLibraries ? !stdenv.hostPlatform.isStatic && (ghc.enableShared or false)
-, enableDeadCodeElimination ? (!stdenv.isDarwin)  # TODO: use -dead_strip for darwin
+, enableDeadCodeElimination ? (!stdenv.hostPlatform.isDarwin)  # TODO: use -dead_strip for darwin
 # Disabling this for ghcjs prevents this crash: https://gitlab.haskell.org/ghc/ghc/-/issues/23235
 , enableStaticLibraries ? !(stdenv.hostPlatform.isWindows || stdenv.hostPlatform.isWasm || stdenv.hostPlatform.isGhcjs)
 , enableHsc2hsViaAsm ? stdenv.hostPlatform.isWindows
@@ -242,8 +242,8 @@ let
     "--with-gcc=$CC" # Clang won't work without that extra information.
   ] ++ [
     "--package-db=$packageConfDir"
-    (optionalString (enableSharedExecutables && stdenv.isLinux) "--ghc-option=-optl=-Wl,-rpath=$out/${ghcLibdir}/${pname}-${version}")
-    (optionalString (enableSharedExecutables && stdenv.isDarwin) "--ghc-option=-optl=-Wl,-headerpad_max_install_names")
+    (optionalString (enableSharedExecutables && stdenv.hostPlatform.isLinux) "--ghc-option=-optl=-Wl,-rpath=$out/${ghcLibdir}/${pname}-${version}")
+    (optionalString (enableSharedExecutables && stdenv.hostPlatform.isDarwin) "--ghc-option=-optl=-Wl,-headerpad_max_install_names")
     (optionalString enableParallelBuilding (makeGhcOptions [ "-j$NIX_BUILD_CORES" "+RTS" "-A64M" "-RTS" ]))
     (optionalString useCpphs ("--with-cpphs=${cpphs}/bin/cpphs " + (makeGhcOptions [ "-cpp"  "-pgmP${cpphs}/bin/cpphs" "-optP--cpp" ])))
     (enableFeature enableLibraryProfiling "library-profiling")
@@ -501,7 +501,7 @@ stdenv.mkDerivation ({
   # the `$out/lib/links` directory to read-only when the build is done after the
   # dist directory has already been exported, which triggers an unnecessary
   # rebuild of modules included in the exported dist directory.
-  + (optionalString (stdenv.isDarwin && (enableSharedLibraries || enableSharedExecutables) && !enableSeparateIntermediatesOutput) ''
+  + (optionalString (stdenv.hostPlatform.isDarwin && (enableSharedLibraries || enableSharedExecutables) && !enableSeparateIntermediatesOutput) ''
     # Work around a limit in the macOS Sierra linker on the number of paths
     # referenced by any one dynamic library:
     #
diff --git a/pkgs/development/interpreters/bats/default.nix b/pkgs/development/interpreters/bats/default.nix
index 17d22a14cae5..1cdf6369914d 100644
--- a/pkgs/development/interpreters/bats/default.nix
+++ b/pkgs/development/interpreters/bats/default.nix
@@ -69,7 +69,7 @@ resholve.mkDerivation rec {
         external = [
           "greadlink"
           "shlock"
-        ] ++ lib.optionals stdenv.isDarwin [
+        ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
           "pkill" # procps doesn't supply this on darwin
         ];
       };
@@ -119,7 +119,7 @@ resholve.mkDerivation rec {
         "cannot:libexec/bats-core/bats-exec-file"
         "cannot:libexec/bats-core/bats-exec-suite"
         "cannot:libexec/bats-core/bats-gather-tests"
-      ] ++ lib.optionals (!stdenv.isDarwin) [
+      ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
         # checked invocations for exec
         "cannot:${procps}/bin/pkill"
       ];
@@ -196,7 +196,7 @@ resholve.mkDerivation rec {
         parallel # skips some tests if it can't detect
         flock # skips some tests if it can't detect
         procps
-      ] ++ lib.optionals stdenv.isDarwin [ lsof ];
+      ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ lsof ];
       inherit doInstallCheck;
       installCheckPhase = ''
         # TODO: cut if https://github.com/bats-core/bats-core/issues/418 allows
@@ -225,7 +225,7 @@ resholve.mkDerivation rec {
     # aren't massive builds)
     inherit bash-preexec locate-dominating-file packcc;
     resholve = resholve.tests.cli;
-  } // lib.optionalAttrs (!stdenv.isDarwin) {
+  } // lib.optionalAttrs (!stdenv.hostPlatform.isDarwin) {
     # TODO: kikit's kicad dependency is marked broken on darwin atm
     # may be able to fold this up if that resolves.
     inherit kikit;
diff --git a/pkgs/development/interpreters/bic/default.nix b/pkgs/development/interpreters/bic/default.nix
index 669cb4f723ac..1571e93e071f 100644
--- a/pkgs/development/interpreters/bic/default.nix
+++ b/pkgs/development/interpreters/bic/default.nix
@@ -40,6 +40,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     maintainers = with maintainers; [ hexagonal-sun ];
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/interpreters/chibi/default.nix b/pkgs/development/interpreters/chibi/default.nix
index b220ed834029..9cdd21a6b955 100644
--- a/pkgs/development/interpreters/chibi/default.nix
+++ b/pkgs/development/interpreters/chibi/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   fixupPhase = ''
     wrapProgram "$out/bin/chibi-scheme" \
       --prefix CHIBI_MODULE_PATH : "$out/share/chibi:$out/lib/chibi" \
-      ${lib.optionalString stdenv.isDarwin "--prefix DYLD_LIBRARY_PATH : $out/lib"}
+      ${lib.optionalString stdenv.hostPlatform.isDarwin "--prefix DYLD_LIBRARY_PATH : $out/lib"}
 
     for f in chibi-doc chibi-ffi snow-chibi; do
       substituteInPlace "$out/bin/$f" \
diff --git a/pkgs/development/interpreters/cling/default.nix b/pkgs/development/interpreters/cling/default.nix
index f1cbd213b871..86e43de5945a 100644
--- a/pkgs/development/interpreters/cling/default.nix
+++ b/pkgs/development/interpreters/cling/default.nix
@@ -26,7 +26,7 @@
 
 # Build with libc++ (LLVM) rather than stdlibc++ (GCC).
 # This is experimental and not all features work.
-, useLLVMLibcxx ? clangStdenv.isDarwin
+, useLLVMLibcxx ? clangStdenv.hostPlatform.isDarwin
 }:
 
 let
@@ -97,7 +97,7 @@ let
 
     CPPFLAGS = if useLLVMLibcxx then [ "-stdlib=libc++" ] else [];
 
-    postInstall = lib.optionalString (!stdenv.isDarwin) ''
+    postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       mkdir -p $out/share/Jupyter
       cp -r /build/clang/tools/cling/tools/Jupyter/kernel $out/share/Jupyter
     '';
diff --git a/pkgs/development/interpreters/clisp/default.nix b/pkgs/development/interpreters/clisp/default.nix
index f6218ef8f3b2..c0f0e2c5c2f8 100644
--- a/pkgs/development/interpreters/clisp/default.nix
+++ b/pkgs/development/interpreters/clisp/default.nix
@@ -33,7 +33,7 @@
     "pcre"
     "rawsock"
   ]
-  ++ lib.optionals stdenv.isLinux [ "bindings/glibc" "zlib" ]
+  ++ lib.optionals stdenv.hostPlatform.isLinux [ "bindings/glibc" "zlib" ]
   ++ lib.optional x11Support "clx/new-clx"
 }:
 
@@ -41,7 +41,7 @@ assert x11Support -> (libX11 != null && libXau != null && libXt != null
   && libXpm != null && xorgproto != null && libXext != null);
 
 let
-  ffcallAvailable = stdenv.isLinux && (libffcall != null);
+  ffcallAvailable = stdenv.hostPlatform.isLinux && (libffcall != null);
   # Some modules need autoreconf called in their directory.
   shouldReconfModule = name: name != "asdf";
 in
@@ -85,7 +85,7 @@ stdenv.mkDerivation {
     find . -type f | xargs sed -e 's/-lICE/-lXau &/' -i
   '';
 
-  preConfigure = lib.optionalString stdenv.isDarwin (''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin (''
     (
       cd src
       autoreconf -f -i -I m4 -I glm4
@@ -121,7 +121,7 @@ stdenv.mkDerivation {
       (''./clisp-link add "$out"/lib/clisp*/base "$(dirname "$out"/lib/clisp*/base)"/full''
       + lib.concatMapStrings (x: " " + x) withModules);
 
-  env.NIX_CFLAGS_COMPILE = "-O0 -falign-functions=${if stdenv.is64bit then "8" else "4"}";
+  env.NIX_CFLAGS_COMPILE = "-O0 -falign-functions=${if stdenv.hostPlatform.is64bit then "8" else "4"}";
 
   meta = {
     description = "ANSI Common Lisp Implementation";
diff --git a/pkgs/development/interpreters/cyber/default.nix b/pkgs/development/interpreters/cyber/default.nix
index 2ef863de5dfa..19d266da0e41 100644
--- a/pkgs/development/interpreters/cyber/default.nix
+++ b/pkgs/development/interpreters/cyber/default.nix
@@ -34,6 +34,6 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     maintainers = with maintainers; [ figsoda ];
     inherit (zig_0_11.meta) platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/interpreters/cyclone/default.nix b/pkgs/development/interpreters/cyclone/default.nix
index 643ee3a63216..75a4b763ae7d 100644
--- a/pkgs/development/interpreters/cyclone/default.nix
+++ b/pkgs/development/interpreters/cyclone/default.nix
@@ -15,7 +15,7 @@ let
 
     enableParallelBuilding = true;
 
-    nativeBuildInputs = lib.optionals stdenv.isDarwin [ cctools ];
+    nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ cctools ];
 
     buildInputs = [ libck ];
 
@@ -36,7 +36,7 @@ stdenv.mkDerivation {
   enableParallelBuilding = true;
 
   nativeBuildInputs = [ bootstrap ]
-    ++ lib.optionals stdenv.isDarwin [ cctools ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools ];
 
   buildInputs = [ libck ];
 
diff --git a/pkgs/development/interpreters/dzaima-apl/default.nix b/pkgs/development/interpreters/dzaima-apl/default.nix
index 75e49ed602df..a607fb0fefe4 100644
--- a/pkgs/development/interpreters/dzaima-apl/default.nix
+++ b/pkgs/development/interpreters/dzaima-apl/default.nix
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     maintainers = with maintainers; [ AndersonTorres ];
     inherit (jdk.meta) platforms;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/dapl-native.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/dapl-native.x86_64-darwin
   };
 }
 # TODO: Processing app
diff --git a/pkgs/development/interpreters/erlang/generic-builder.nix b/pkgs/development/interpreters/erlang/generic-builder.nix
index b5502a036247..38af8a6e0926 100644
--- a/pkgs/development/interpreters/erlang/generic-builder.nix
+++ b/pkgs/development/interpreters/erlang/generic-builder.nix
@@ -74,7 +74,7 @@
 , meta ? { }
 }:
 
-assert wxSupport -> (if stdenv.isDarwin
+assert wxSupport -> (if stdenv.hostPlatform.isDarwin
 then wxGTK != null
 else libGL != null && libGLU != null && wxGTK != null && xorg != null);
 
@@ -84,7 +84,7 @@ assert ex_docSupport -> ex_doc != null;
 
 let
   inherit (lib) optional optionals optionalAttrs optionalString;
-  wxPackages2 = if stdenv.isDarwin then [ wxGTK ] else wxPackages;
+  wxPackages2 = if stdenv.hostPlatform.isDarwin then [ wxGTK ] else wxPackages;
 
 in
 stdenv.mkDerivation ({
@@ -105,7 +105,7 @@ stdenv.mkDerivation ({
     ++ optionals odbcSupport odbcPackages
     ++ optionals javacSupport javacPackages
     ++ optional systemdSupport systemd
-    ++ optionals stdenv.isDarwin (with pkgs.darwin.apple_sdk.frameworks; [ AGL Carbon Cocoa WebKit ]);
+    ++ optionals stdenv.hostPlatform.isDarwin (with pkgs.darwin.apple_sdk.frameworks; [ AGL Carbon Cocoa WebKit ]);
 
   debugInfo = enableDebugInfo;
 
@@ -148,9 +148,9 @@ stdenv.mkDerivation ({
     ++ optional odbcSupport "--with-odbc=${unixODBC}"
     ++ optional wxSupport "--enable-wx"
     ++ optional systemdSupport "--enable-systemd"
-    ++ optional stdenv.isDarwin "--enable-darwin-64bit"
+    ++ optional stdenv.hostPlatform.isDarwin "--enable-darwin-64bit"
     # make[3]: *** [yecc.beam] Segmentation fault: 11
-    ++ optional (stdenv.isDarwin && stdenv.isx86_64) "--disable-jit"
+    ++ optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) "--disable-jit"
     ++ configureFlags;
 
   # install-docs will generate and install manpages and html docs
diff --git a/pkgs/development/interpreters/evcxr/default.nix b/pkgs/development/interpreters/evcxr/default.nix
index 6d64e76b816c..a95e45fc6536 100644
--- a/pkgs/development/interpreters/evcxr/default.nix
+++ b/pkgs/development/interpreters/evcxr/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
   RUST_SRC_PATH = "${rustPlatform.rustLibSrc}";
 
   nativeBuildInputs = [ pkg-config makeWrapper cmake ];
-  buildInputs = lib.optionals stdenv.isDarwin
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin
     [ libiconv CoreServices Security ];
 
   checkFlags = [
diff --git a/pkgs/development/interpreters/femtolisp/default.nix b/pkgs/development/interpreters/femtolisp/default.nix
index 7bf0ea7c7540..3e35f7edc657 100644
--- a/pkgs/development/interpreters/femtolisp/default.nix
+++ b/pkgs/development/interpreters/femtolisp/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation {
     homepage = "https://git.sr.ht/~ft/femtolisp";
     license = with lib.licenses; [ mit bsd3 ];
     maintainers = with lib.maintainers; [ moody ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     platforms = lib.platforms.unix;
     mainProgram = "flisp";
   };
diff --git a/pkgs/development/interpreters/gauche/default.nix b/pkgs/development/interpreters/gauche/default.nix
index 62903de6bb8b..3fb736ff7e38 100644
--- a/pkgs/development/interpreters/gauche/default.nix
+++ b/pkgs/development/interpreters/gauche/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     zlib
     mbedtls
     cacert
-  ] ++ lib.optionals stdenv.isDarwin [ CoreServices ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   autoreconfPhase = ''
     ./DIST gen
diff --git a/pkgs/development/interpreters/gnu-apl/default.nix b/pkgs/development/interpreters/gnu-apl/default.nix
index 85e86de1d6b2..ee4d8482cd41 100644
--- a/pkgs/development/interpreters/gnu-apl/default.nix
+++ b/pkgs/development/interpreters/gnu-apl/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     "-Wno-error=use-after-free"
    ]) ++ lib.optional stdenv.cc.isClang "-Wno-error=null-dereference");
 
-  patchPhase = lib.optionalString stdenv.isDarwin ''
+  patchPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/LApack.cc --replace "malloc.h" "malloc/malloc.h"
   '';
 
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Free interpreter for the APL programming language";
     homepage    = "https://www.gnu.org/software/apl/";
     license     = licenses.gpl3Plus;
diff --git a/pkgs/development/interpreters/gnudatalanguage/default.nix b/pkgs/development/interpreters/gnudatalanguage/default.nix
index 41f15afbee30..d9acb974df88 100644
--- a/pkgs/development/interpreters/gnudatalanguage/default.nix
+++ b/pkgs/development/interpreters/gnudatalanguage/default.nix
@@ -24,16 +24,16 @@
 , libgeotiff
 , libjpeg
   # eccodes is broken on darwin
-, enableGRIB ? stdenv.isLinux
+, enableGRIB ? stdenv.hostPlatform.isLinux
 , eccodes
-, enableGLPK ? stdenv.isLinux
+, enableGLPK ? stdenv.hostPlatform.isLinux
 , glpk
   # We enable it in hdf4 and use libtirpc as a dependency here from the passthru
   # of hdf4
-, enableLibtirpc ? stdenv.isLinux
+, enableLibtirpc ? stdenv.hostPlatform.isLinux
 , libtirpc
 , python3
-, enableMPI ? (stdenv.isLinux || stdenv.isDarwin)
+, enableMPI ? (stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isDarwin)
   # Choose MPICH over OpenMPI because it currently builds on AArch and Darwin
 , mpi
   # Unfree optional dependency for hdf4 and hdf5
@@ -57,11 +57,11 @@
 , plplot-forced ? null
   # wxWidgets is preferred over X11 for this project but we only have it on Linux
   # and Darwin.
-, enableWX ? (stdenv.isLinux || stdenv.isDarwin)
+, enableWX ? (stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isDarwin)
 , wxGTK32
 , Cocoa
   # X11: OFF by default for platform consistency. Use X where WX is not available
-, enableXWin ? (!stdenv.isLinux && !stdenv.isDarwin)
+, enableXWin ? (!stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isDarwin)
 }:
 
 let
@@ -146,7 +146,7 @@ stdenv.mkDerivation rec {
   ++ lib.optional enableGRIB eccodes
   ++ lib.optional enableGLPK glpk
   ++ lib.optional enableWX wxGTK32
-  ++ lib.optional (enableWX && stdenv.isDarwin) Cocoa
+  ++ lib.optional (enableWX && stdenv.hostPlatform.isDarwin) Cocoa
   ++ lib.optional enableMPI mpi
   ++ lib.optional enableLibtirpc hdf4-custom.libtirpc
   ++ lib.optional enableSzip szip;
@@ -172,7 +172,7 @@ stdenv.mkDerivation rec {
 
   # Tests are failing on Hydra:
   # ./src/common/dpycmn.cpp(137): assert ""IsOk()"" failed in GetClientArea(): invalid wxDisplay object
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
 
   # Opt-out unstable tests
   # https://github.com/gnudatalanguage/gdl/issues/482
diff --git a/pkgs/development/interpreters/guile/2.0.nix b/pkgs/development/interpreters/guile/2.0.nix
index 57ff88025690..510834df4046 100644
--- a/pkgs/development/interpreters/guile/2.0.nix
+++ b/pkgs/development/interpreters/guile/2.0.nix
@@ -79,7 +79,7 @@ builder rec {
       sha256 = "0p6c1lmw1iniq03z7x5m65kg3lq543kgvdb4nrxsaxjqf3zhl77v";
     })] ++
   (lib.optional (coverageAnalysis != null) ./gcov-file-name.patch)
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ./filter-mkostemp-darwin.patch
     (fetchpatch {
       url = "https://gitlab.gnome.org/GNOME/gtk-osx/raw/52898977f165777ad9ef169f7d4818f2d4c9b731/patches/guile-clocktime.patch";
@@ -92,11 +92,11 @@ builder rec {
 
   # don't have "libgcc_s.so.1" on darwin
   LDFLAGS = lib.optionalString
-    (!stdenv.isDarwin && !stdenv.hostPlatform.isMusl) "-lgcc_s";
+    (!stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isMusl) "-lgcc_s";
 
   configureFlags = [
     "--with-libreadline-prefix"
-  ] ++ lib.optionals stdenv.isSunOS [
+  ] ++ lib.optionals stdenv.hostPlatform.isSunOS [
     # Make sure the right <gmp.h> is found, and not the incompatible
     # /usr/include/mp.h from OpenSolaris. See
     # <https://lists.gnu.org/archive/html/hydra-users/2012-08/msg00000.html>
@@ -159,7 +159,7 @@ builder rec {
 
 //
 
-(lib.optionalAttrs (!stdenv.isLinux) {
+(lib.optionalAttrs (!stdenv.hostPlatform.isLinux) {
   # Work around <https://bugs.gnu.org/14201>.
   SHELL = stdenv.shell;
   CONFIG_SHELL = stdenv.shell;
diff --git a/pkgs/development/interpreters/guile/2.2.nix b/pkgs/development/interpreters/guile/2.2.nix
index 9dd102012068..6c75540dae0c 100644
--- a/pkgs/development/interpreters/guile/2.2.nix
+++ b/pkgs/development/interpreters/guile/2.2.nix
@@ -73,7 +73,7 @@ builder rec {
     # Read the header of the patch to more info
     ./eai_system.patch
   ] ++ lib.optional (coverageAnalysis != null) ./gcov-file-name.patch
-  ++ lib.optional stdenv.isDarwin
+  ++ lib.optional stdenv.hostPlatform.isDarwin
     (fetchpatch {
       url = "https://gitlab.gnome.org/GNOME/gtk-osx/raw/52898977f165777ad9ef169f7d4818f2d4c9b731/patches/guile-clocktime.patch";
       sha256 = "12wvwdna9j8795x59ldryv9d84c1j3qdk2iskw09306idfsis207";
@@ -88,7 +88,7 @@ builder rec {
 
   configureFlags = [
     "--with-libreadline-prefix=${lib.getDev readline}"
-  ] ++ lib.optionals stdenv.isSunOS [
+  ] ++ lib.optionals stdenv.hostPlatform.isSunOS [
     # Make sure the right <gmp.h> is found, and not the incompatible
     # /usr/include/mp.h from OpenSolaris.  See
     # <https://lists.gnu.org/archive/html/hydra-users/2012-08/msg00000.html>
diff --git a/pkgs/development/interpreters/guile/3.0.nix b/pkgs/development/interpreters/guile/3.0.nix
index f7797a7c8ad2..1eeda97b0f8b 100644
--- a/pkgs/development/interpreters/guile/3.0.nix
+++ b/pkgs/development/interpreters/guile/3.0.nix
@@ -49,7 +49,7 @@ builder rec {
     libtool
     libunistring
     readline
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libxcrypt
   ];
   propagatedBuildInputs = [
@@ -62,7 +62,7 @@ builder rec {
     # flags, see below.
     libtool
     libunistring
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libxcrypt
   ];
 
@@ -75,7 +75,7 @@ builder rec {
   patches = [
     ./eai_system.patch
   ] ++ lib.optional (coverageAnalysis != null) ./gcov-file-name.patch
-  ++ lib.optional stdenv.isDarwin
+  ++ lib.optional stdenv.hostPlatform.isDarwin
     (fetchpatch {
       url = "https://gitlab.gnome.org/GNOME/gtk-osx/raw/52898977f165777ad9ef169f7d4818f2d4c9b731/patches/guile-clocktime.patch";
       sha256 = "12wvwdna9j8795x59ldryv9d84c1j3qdk2iskw09306idfsis207";
@@ -90,7 +90,7 @@ builder rec {
 
   configureFlags = [
     "--with-libreadline-prefix=${lib.getDev readline}"
-  ] ++ lib.optionals stdenv.isSunOS [
+  ] ++ lib.optionals stdenv.hostPlatform.isSunOS [
     # Make sure the right <gmp.h> is found, and not the incompatible
     # /usr/include/mp.h from OpenSolaris.  See
     # <https://lists.gnu.org/archive/html/hydra-users/2012-08/msg00000.html>
@@ -105,7 +105,7 @@ builder rec {
   ]
   # At least on x86_64-darwin '-flto' autodetection is not correct:
   #  https://github.com/NixOS/nixpkgs/pull/160051#issuecomment-1046193028
-  ++ lib.optional (stdenv.isDarwin) "--disable-lto";
+  ++ lib.optional (stdenv.hostPlatform.isDarwin) "--disable-lto";
 
   postInstall = ''
     wrapProgram $out/bin/guile-snarf --prefix PATH : "${gawk}/bin"
@@ -129,7 +129,7 @@ builder rec {
   doInstallCheck = doCheck;
 
   # In procedure bytevector-u8-ref: Argument 2 out of range
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   setupHook = ./setup-hook-3.0.sh;
 
diff --git a/pkgs/development/interpreters/hashlink/default.nix b/pkgs/development/interpreters/hashlink/default.nix
index f017e1a43c86..6ecb4913dbc8 100644
--- a/pkgs/development/interpreters/hashlink/default.nix
+++ b/pkgs/development/interpreters/hashlink/default.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
     cp -r other/haxelib/* "${haxelibPath}"
   '';
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change libhl.dylib $out/lib/libhl.dylib $out/bin/hl
   '';
 
diff --git a/pkgs/development/interpreters/hugs/default.nix b/pkgs/development/interpreters/hugs/default.nix
index d8ee5726ef33..ab48ef91b362 100644
--- a/pkgs/development/interpreters/hugs/default.nix
+++ b/pkgs/development/interpreters/hugs/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "hugs";
     homepage = "https://www.haskell.org/hugs";
     description = "Haskell interpreter";
diff --git a/pkgs/development/interpreters/icon-lang/default.nix b/pkgs/development/interpreters/icon-lang/default.nix
index e5c486ed8de2..2ea8a20d4f6c 100644
--- a/pkgs/development/interpreters/icon-lang/default.nix
+++ b/pkgs/development/interpreters/icon-lang/default.nix
@@ -21,11 +21,11 @@ stdenv.mkDerivation rec {
     let
       target = if withGraphics then "X-Configure" else "Configure";
       platform =
-        if stdenv.isLinux then "linux"
-        else if stdenv.isDarwin then "macintosh"
-        else if stdenv.isBSD then "bsd"
-        else if stdenv.isCygwin then "cygwin"
-        else if stdenv.isSunOS then "solaris"
+        if stdenv.hostPlatform.isLinux then "linux"
+        else if stdenv.hostPlatform.isDarwin then "macintosh"
+        else if stdenv.hostPlatform.isBSD then "bsd"
+        else if stdenv.hostPlatform.isCygwin then "cygwin"
+        else if stdenv.hostPlatform.isSunOS then "solaris"
         else throw "unsupported system";
     in
     "make ${target} name=${platform}";
diff --git a/pkgs/development/interpreters/janet/default.nix b/pkgs/development/interpreters/janet/default.nix
index 34388c8c033b..1efb95bcade8 100644
--- a/pkgs/development/interpreters/janet/default.nix
+++ b/pkgs/development/interpreters/janet/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation (finalAttrs: {
   postPatch = ''
     substituteInPlace janet.1 \
       --replace /usr/local/ $out/
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # error: Socket is not connected
     substituteInPlace meson.build \
       --replace "'test/suite-ev.janet'," ""
diff --git a/pkgs/development/interpreters/kerf/default.nix b/pkgs/development/interpreters/kerf/default.nix
index d019743bfb4d..e11a683082ed 100644
--- a/pkgs/development/interpreters/kerf/default.nix
+++ b/pkgs/development/interpreters/kerf/default.nix
@@ -18,9 +18,9 @@ stdenv.mkDerivation rec {
 
   sourceRoot = "${src.name}/src";
   buildInputs = [ libedit zlib ncurses ]
-    ++ lib.optionals stdenv.isDarwin ([
+    ++ lib.optionals stdenv.hostPlatform.isDarwin ([
       Accelerate
-    ] ++ lib.optionals stdenv.isx86_64 /* && isDarwin */ [
+    ] ++ lib.optionals stdenv.hostPlatform.isx86_64 /* && isDarwin */ [
       CoreGraphics CoreVideo
     ]);
 
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     "implicit-function-declaration"
     "gnu-variable-sized-type-not-at-end"
     "unused-result"
-  ] ++ lib.optionals stdenv.isDarwin [ "-fcommon" ]);
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "-fcommon" ]);
 
   patchPhase = ''
     substituteInPlace ./Makefile \
@@ -88,6 +88,6 @@ stdenv.mkDerivation rec {
 
     # aarch64-linux seems hopeless, with over 2,000 warnings
     # generated?
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   };
 }
diff --git a/pkgs/development/interpreters/lua-5/default.nix b/pkgs/development/interpreters/lua-5/default.nix
index 7f1e5ccb7313..30ce00d44e61 100644
--- a/pkgs/development/interpreters/lua-5/default.nix
+++ b/pkgs/development/interpreters/lua-5/default.nix
@@ -86,7 +86,7 @@ rec {
     makeWrapper = makeBinaryWrapper;
     inherit passthruFun;
 
-    patches = lib.optional stdenv.isDarwin ./5.4.darwin.patch;
+    patches = lib.optional stdenv.hostPlatform.isDarwin ./5.4.darwin.patch;
   };
 
   lua5_4_compat = lua5_4.override({
@@ -102,7 +102,7 @@ rec {
     inherit passthruFun;
 
     patches =
-      lib.optionals stdenv.isDarwin [ ./5.2.darwin.patch ];
+      lib.optionals stdenv.hostPlatform.isDarwin [ ./5.2.darwin.patch ];
   };
 
   lua5_3_compat = lua5_3.override({
@@ -119,7 +119,7 @@ rec {
     inherit passthruFun;
     patches = [
       ./CVE-2022-28805.patch
-    ] ++ lib.optional stdenv.isDarwin ./5.2.darwin.patch;
+    ] ++ lib.optional stdenv.hostPlatform.isDarwin ./5.2.darwin.patch;
   };
 
   lua5_2_compat = lua5_2.override({
@@ -134,7 +134,7 @@ rec {
     hash = "2640fc56a795f29d28ef15e13c34a47e223960b0240e8cb0a82d9b0738695333";
     makeWrapper = makeBinaryWrapper;
     inherit passthruFun;
-    patches = (lib.optional stdenv.isDarwin ./5.1.darwin.patch)
+    patches = (lib.optional stdenv.hostPlatform.isDarwin ./5.1.darwin.patch)
       ++ [ ./CVE-2014-5461.patch ];
   };
 
diff --git a/pkgs/development/interpreters/lua-5/interpreter.nix b/pkgs/development/interpreters/lua-5/interpreter.nix
index 497307d57b3f..0f7b65df95ef 100644
--- a/pkgs/development/interpreters/lua-5/interpreter.nix
+++ b/pkgs/development/interpreters/lua-5/interpreter.nix
@@ -25,12 +25,12 @@ stdenv.mkDerivation (finalAttrs:
 
     luaversion = lib.versions.majorMinor finalAttrs.version;
 
-    plat = if (stdenv.isLinux && lib.versionOlder self.luaversion "5.4") then "linux"
-          else if (stdenv.isLinux && lib.versionAtLeast self.luaversion "5.4") then "linux-readline"
-          else if stdenv.isDarwin then "macosx"
+    plat = if (stdenv.hostPlatform.isLinux && lib.versionOlder self.luaversion "5.4") then "linux"
+          else if (stdenv.hostPlatform.isLinux && lib.versionAtLeast self.luaversion "5.4") then "linux-readline"
+          else if stdenv.hostPlatform.isDarwin then "macosx"
           else if stdenv.hostPlatform.isMinGW then "mingw"
-          else if stdenv.isFreeBSD then "freebsd"
-          else if stdenv.isSunOS then "solaris"
+          else if stdenv.hostPlatform.isFreeBSD then "freebsd"
+          else if stdenv.hostPlatform.isSunOS then "solaris"
           else if stdenv.hostPlatform.isBSD then "bsd"
           else if stdenv.hostPlatform.isUnix then "posix"
           else "generic";
@@ -67,7 +67,7 @@ stdenv.mkDerivation (finalAttrs:
 
       # abort if patching didn't work
       grep $out src/luaconf.h
-  '' + lib.optionalString (!stdenv.isDarwin && !staticOnly) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin && !staticOnly) ''
     # Add a target for a shared library to the Makefile.
     sed -e '1s/^/LUA_SO = liblua.so/' \
         -e 's/ALL_T *= */&$(LUA_SO) /' \
@@ -96,10 +96,10 @@ stdenv.mkDerivation (finalAttrs:
 
     makeFlagsArray+=(CFLAGS='-O2 -fPIC${lib.optionalString compat compatFlags} $(${
       if lib.versionAtLeast luaversion "5.2" then "SYSCFLAGS" else "MYCFLAGS"})' )
-    makeFlagsArray+=(${lib.optionalString stdenv.isDarwin "CC=\"$CC\""}${lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) " 'AR=${stdenv.cc.targetPrefix}ar rcu'"})
+    makeFlagsArray+=(${lib.optionalString stdenv.hostPlatform.isDarwin "CC=\"$CC\""}${lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) " 'AR=${stdenv.cc.targetPrefix}ar rcu'"})
 
     installFlagsArray=( TO_BIN="lua luac" INSTALL_DATA='cp -d' \
-      TO_LIB="${if stdenv.isDarwin then "liblua.${finalAttrs.version}.dylib"
+      TO_LIB="${if stdenv.hostPlatform.isDarwin then "liblua.${finalAttrs.version}.dylib"
                 else ("liblua.a" + lib.optionalString (!staticOnly) " liblua.so liblua.so.${luaversion} liblua.so.${finalAttrs.version}" )}" )
 
     runHook postConfigure
diff --git a/pkgs/development/interpreters/luajit/default.nix b/pkgs/development/interpreters/luajit/default.nix
index f5e25b6261bc..22574dd2b389 100644
--- a/pkgs/development/interpreters/luajit/default.nix
+++ b/pkgs/development/interpreters/luajit/default.nix
@@ -58,7 +58,7 @@ let
   # TODO support also other build architectures. The ideal way would be to use
   # stdenv_32bit but that doesn't work due to host platform mismatch:
   # https://github.com/NixOS/nixpkgs/issues/212494
-  buildStdenv = if buildPackages.stdenv.isx86_64 && stdenv.is32bit
+  buildStdenv = if buildPackages.stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.is32bit
     then buildPackages.pkgsi686Linux.buildPackages.stdenv
     else buildPackages.stdenv;
 
diff --git a/pkgs/development/interpreters/lunatic/default.nix b/pkgs/development/interpreters/lunatic/default.nix
index 4ad07f6a1e33..6ccee2b8de76 100644
--- a/pkgs/development/interpreters/lunatic/default.nix
+++ b/pkgs/development/interpreters/lunatic/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/interpreters/lune/default.nix b/pkgs/development/interpreters/lune/default.nix
index 3d84ac9ba521..d010361a931c 100644
--- a/pkgs/development/interpreters/lune/default.nix
+++ b/pkgs/development/interpreters/lune/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
     cmake # required for libz-ng-sys
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     SystemConfiguration
   ];
@@ -64,6 +64,6 @@ rustPlatform.buildRustPackage rec {
     license = licenses.mpl20;
     maintainers = with maintainers; [ lammermann ];
     # note: Undefined symbols for architecture x86_64
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/interpreters/maude/default.nix b/pkgs/development/interpreters/maude/default.nix
index f8d4e98c90b2..667c797cd093 100644
--- a/pkgs/development/interpreters/maude/default.nix
+++ b/pkgs/development/interpreters/maude/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
   ];
 
   hardeningDisable = [ "stackprotector" ] ++
-    lib.optionals stdenv.isi686 [ "pic" "fortify" ];
+    lib.optionals stdenv.hostPlatform.isi686 [ "pic" "fortify" ];
 
   # Fix for glibc-2.34, see
   # https://gitweb.gentoo.org/repo/gentoo.git/commit/dev-lang/maude/maude-3.1-r1.ebuild?id=f021cc6cfa1e35eb9c59955830f1fd89bfcb26b4
diff --git a/pkgs/development/interpreters/micropython/default.nix b/pkgs/development/interpreters/micropython/default.nix
index 98ef61f82195..df34036a9423 100644
--- a/pkgs/development/interpreters/micropython/default.nix
+++ b/pkgs/development/interpreters/micropython/default.nix
@@ -43,8 +43,8 @@ stdenv.mkDerivation rec {
   __darwinAllowLocalNetworking = true; # needed for select_poll_eintr test
 
   skippedTests = " -e select_poll_fd"
-    + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) " -e ffi_callback -e float_parse -e float_parse_doubleproc"
-    + lib.optionalString (stdenv.isLinux && stdenv.isAarch64) " -e float_parse"
+    + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) " -e ffi_callback -e float_parse -e float_parse_doubleproc"
+    + lib.optionalString (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) " -e float_parse"
   ;
 
   checkPhase = ''
diff --git a/pkgs/development/interpreters/mujs/default.nix b/pkgs/development/interpreters/mujs/default.nix
index 225146b33fe7..9bffafe4bd73 100644
--- a/pkgs/development/interpreters/mujs/default.nix
+++ b/pkgs/development/interpreters/mujs/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ readline ];
 
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [ fixDarwinDylibNames ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ fixDarwinDylibNames ];
 
   makeFlags = [ "prefix=$(out)" ];
 
diff --git a/pkgs/development/interpreters/nextflow/default.nix b/pkgs/development/interpreters/nextflow/default.nix
index ed07f175b653..0408bf243121 100644
--- a/pkgs/development/interpreters/nextflow/default.nix
+++ b/pkgs/development/interpreters/nextflow/default.nix
@@ -67,7 +67,7 @@ stdenv.mkDerivation rec {
   };
 };
 in
-if stdenv.isLinux then
+if stdenv.hostPlatform.isLinux then
   buildFHSEnv
   {
     name = "nextflow";
diff --git a/pkgs/development/interpreters/octave/default.nix b/pkgs/development/interpreters/octave/default.nix
index 8bf1c43d1239..72895919383d 100644
--- a/pkgs/development/interpreters/octave/default.nix
+++ b/pkgs/development/interpreters/octave/default.nix
@@ -136,9 +136,9 @@ in stdenv.mkDerivation (finalAttrs: {
       libsForQt5.qscintilla
     ] ++ lib.optionals (enableJava) [
       jdk
-    ] ++ lib.optionals (!stdenv.isDarwin) [
+    ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       libGL libGLU libX11
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       darwin.apple_sdk.frameworks.Accelerate
       darwin.apple_sdk.frameworks.Cocoa
@@ -153,12 +153,12 @@ in stdenv.mkDerivation (finalAttrs: {
       libsForQt5.qttools
     ];
 
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
 
     enableParallelBuilding = true;
 
     # Fix linker error on Darwin (see https://trac.macports.org/ticket/61865)
-    NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-lobjc";
+    NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-lobjc";
 
     # See https://savannah.gnu.org/bugs/?50339
     F77_INTEGER_8_FLAG = lib.optionalString use64BitIdx "-fdefault-integer-8";
@@ -168,9 +168,9 @@ in stdenv.mkDerivation (finalAttrs: {
       "--with-lapack=lapack"
       (if use64BitIdx then "--enable-64" else "--disable-64")
     ]
-    ++ lib.optionals stdenv.isDarwin [ "--enable-link-all-dependencies" ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "--enable-link-all-dependencies" ]
     ++ lib.optionals enableReadline [ "--enable-readline" ]
-    ++ lib.optionals stdenv.isDarwin [ "--with-x=no" ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "--with-x=no" ]
     ++ lib.optionals enableQt [ "--with-qt=5" ]
     ;
 
diff --git a/pkgs/development/interpreters/perl/interpreter.nix b/pkgs/development/interpreters/perl/interpreter.nix
index 2afdcded3db4..23336cb8f478 100644
--- a/pkgs/development/interpreters/perl/interpreter.nix
+++ b/pkgs/development/interpreters/perl/interpreter.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation (rec {
   # the libxcrypt port has been installed.
   #
   # Without libxcrypt, Perl will still find FreeBSD's crypt functions.
-  propagatedBuildInputs = lib.optional (enableCrypt && !stdenv.isFreeBSD) libxcrypt;
+  propagatedBuildInputs = lib.optional (enableCrypt && !stdenv.hostPlatform.isFreeBSD) libxcrypt;
 
   disallowedReferences = [ stdenv.cc ];
 
@@ -70,8 +70,8 @@ stdenv.mkDerivation (rec {
     ++ lib.optional (lib.versionOlder version "5.38.0") ./no-sys-dirs-5.31.patch
     ++ lib.optional (lib.versionAtLeast version "5.38.0") ./no-sys-dirs-5.38.0.patch
 
-    ++ lib.optional stdenv.isSunOS ./ld-shared.patch
-    ++ lib.optionals stdenv.isDarwin [ ./cpp-precomp.patch ./sw_vers.patch ]
+    ++ lib.optional stdenv.hostPlatform.isSunOS ./ld-shared.patch
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ ./cpp-precomp.patch ./sw_vers.patch ]
     ++ lib.optional crossCompiling ./cross.patch;
 
   # This is not done for native builds because pwd may need to come from
@@ -107,7 +107,7 @@ stdenv.mkDerivation (rec {
       "-Dloclibpth=${libcLib}/lib"
     ]
     ++ lib.optionals ((builtins.match ''5\.[0-9]*[13579]\..+'' version) != null) [ "-Dusedevel" "-Uversiononly" ]
-    ++ lib.optional stdenv.isSunOS "-Dcc=gcc"
+    ++ lib.optional stdenv.hostPlatform.isSunOS "-Dcc=gcc"
     ++ lib.optional enableThreading "-Dusethreads"
     ++ lib.optional (!enableCrypt) "-A clear:d_crypt_r"
     ++ lib.optional stdenv.hostPlatform.isStatic "--all-static"
@@ -116,7 +116,7 @@ stdenv.mkDerivation (rec {
       "-Dman1dir=${placeholder "out"}/share/man/man1"
       "-Dman3dir=${placeholder "out"}/share/man/man3"
     ]
-    ++ lib.optionals (stdenv.isFreeBSD && crossCompiling && enableCrypt) [
+    ++ lib.optionals (stdenv.hostPlatform.isFreeBSD && crossCompiling && enableCrypt) [
       # https://github.com/Perl/perl5/issues/22295
       # configure cannot figure out that we have crypt automatically, but we really do
       "-Dd_crypt"
@@ -157,7 +157,7 @@ stdenv.mkDerivation (rec {
     GZIP_OS_CODE = AUTO_DETECT
     USE_ZLIB_NG  = False
     EOF
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace hints/darwin.sh --replace "env MACOSX_DEPLOYMENT_TARGET=10.3" ""
   '' + lib.optionalString (!enableThreading) ''
     # We need to do this because the bootstrap doesn't have a static libpthread
diff --git a/pkgs/development/interpreters/php/generic.nix b/pkgs/development/interpreters/php/generic.nix
index 458804e2e51d..13e10103f54f 100644
--- a/pkgs/development/interpreters/php/generic.nix
+++ b/pkgs/development/interpreters/php/generic.nix
@@ -58,7 +58,7 @@ let
     , zendSignalsSupport ? true
     , zendMaxExecutionTimersSupport ? false
     , systemdSupport ? lib.meta.availableOn stdenv.hostPlatform systemd
-    , valgrindSupport ? !stdenv.isDarwin && lib.meta.availableOn stdenv.hostPlatform valgrind
+    , valgrindSupport ? !stdenv.hostPlatform.isDarwin && lib.meta.availableOn stdenv.hostPlatform valgrind
     , ztsSupport ? apxs2Support
     }@args:
 
@@ -213,7 +213,7 @@ let
           enableParallelBuilding = true;
 
           nativeBuildInputs = [ autoconf automake bison flex libtool pkg-config re2c ]
-            ++ lib.optional stdenv.isDarwin xcbuild;
+            ++ lib.optional stdenv.hostPlatform.isDarwin xcbuild;
 
           buildInputs =
             # PCRE extension
@@ -285,7 +285,7 @@ let
               if [ -f "scripts/dev/genfiles" ]; then
                 ./scripts/dev/genfiles
               fi
-            '' + lib.optionalString stdenv.isDarwin ''
+            '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
               substituteInPlace configure --replace-fail "-lstdc++" "-lc++"
             '';
 
diff --git a/pkgs/development/interpreters/picoc/default.nix b/pkgs/development/interpreters/picoc/default.nix
index d27efe1f2b82..eaf08de7b994 100644
--- a/pkgs/development/interpreters/picoc/default.nix
+++ b/pkgs/development/interpreters/picoc/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation {
 
   makeFlags = [ "CC=${stdenv.cc.targetPrefix}cc" ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-Wno-error=implicit-function-declaration"
   ]);
 
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
 
   # Tests are currently broken on i686 see
   # https://hydra.nixos.org/build/24003763/nixlog/1
-  doCheck = !stdenv.isi686 && !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isi686 && !stdenv.hostPlatform.isAarch64;
   checkTarget = "test";
 
   installPhase = ''
diff --git a/pkgs/development/interpreters/python/cpython/2.7/default.nix b/pkgs/development/interpreters/python/cpython/2.7/default.nix
index af9bbc47475b..abb66b38e3cc 100644
--- a/pkgs/development/interpreters/python/cpython/2.7/default.nix
+++ b/pkgs/development/interpreters/python/cpython/2.7/default.nix
@@ -137,14 +137,14 @@ let
         revert = true;
         hash = "sha256-Lp5fGlcfJJ6p6vKmcLckJiAA2AZz4prjFE0aMEJxotw=";
       })
-    ] ++ lib.optionals (x11Support && stdenv.isDarwin) [
+    ] ++ lib.optionals (x11Support && stdenv.hostPlatform.isDarwin) [
       ./use-correct-tcl-tk-on-darwin.patch
 
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Fix darwin build https://bugs.python.org/issue34027
       ../3.7/darwin-libutil.patch
 
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
 
       # Disable the use of ldconfig in ctypes.util.find_library (since
       # ldconfig doesn't work on NixOS), and don't use
@@ -188,7 +188,7 @@ let
       for i in Lib/plat-*/regen; do
         substituteInPlace $i --replace /usr/include/ ${stdenv.cc.libc}/include/
       done
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace configure --replace '`/usr/bin/arch`' '"i386"'
       substituteInPlace Lib/multiprocessing/__init__.py \
         --replace 'os.popen(comm)' 'os.popen("${coreutils}/bin/nproc")'
@@ -205,7 +205,7 @@ let
     "--enable-unicode=ucs${toString ucsEncoding}"
   ] ++ lib.optionals stdenv.hostPlatform.isCygwin [
     "ac_cv_func_bind_textdomain_codeset=yes"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--disable-toolbox-glue"
   ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
     "PYTHON_FOR_BUILD=${lib.getBin buildPackages.python}/bin/python"
@@ -240,7 +240,7 @@ let
     lib.optional (stdenv ? cc && stdenv.cc.libc != null) stdenv.cc.libc ++
     [ bzip2 openssl zlib libffi expat db gdbm ncurses sqlite readline ]
     ++ lib.optionals x11Support [ tcl tk libX11 ]
-    ++ lib.optional (stdenv.isDarwin && configd != null) configd;
+    ++ lib.optional (stdenv.hostPlatform.isDarwin && configd != null) configd;
   nativeBuildInputs =
     [ autoreconfHook ]
     ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform)
@@ -264,7 +264,7 @@ in with passthru; stdenv.mkDerivation ({
 
     inherit src patches buildInputs nativeBuildInputs preConfigure configureFlags;
 
-    LDFLAGS = lib.optionalString (!stdenv.isDarwin) "-lgcc_s";
+    LDFLAGS = lib.optionalString (!stdenv.hostPlatform.isDarwin) "-lgcc_s";
     inherit (mkPaths buildInputs) C_INCLUDE_PATH LIBRARY_PATH;
 
     env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.targetPlatform.system == "x86_64-darwin") "-msse2"
diff --git a/pkgs/development/interpreters/python/cpython/default.nix b/pkgs/development/interpreters/python/cpython/default.nix
index 56e0be3ea59c..bb3dba534b79 100644
--- a/pkgs/development/interpreters/python/cpython/default.nix
+++ b/pkgs/development/interpreters/python/cpython/default.nix
@@ -70,7 +70,7 @@
 , enableNoSemanticInterposition ? true
 
 # enabling LTO on 32bit arch causes downstream packages to fail when linking
-, enableLTO ? stdenv.isDarwin || (stdenv.is64bit && stdenv.isLinux)
+, enableLTO ? stdenv.hostPlatform.isDarwin || (stdenv.hostPlatform.is64bit && stdenv.hostPlatform.isLinux)
 
 # enable asserts to ensure the build remains reproducible
 , reproducibleBuild ? false
@@ -95,7 +95,7 @@ assert x11Support -> tcl != null
 
 assert bluezSupport -> bluez != null;
 
-assert lib.assertMsg (enableFramework -> stdenv.isDarwin)
+assert lib.assertMsg (enableFramework -> stdenv.hostPlatform.isDarwin)
   "Framework builds are only supported on Darwin.";
 
 assert lib.assertMsg (reproducibleBuild -> stripBytecode)
@@ -152,7 +152,7 @@ let
 
   nativeBuildInputs = [
     nukeReferences
-  ] ++ optionals (!stdenv.isDarwin) [
+  ] ++ optionals (!stdenv.hostPlatform.isDarwin) [
     autoconf-archive # needed for AX_CHECK_COMPILE_FLAG
     autoreconfHook
     pkg-config
@@ -181,7 +181,7 @@ let
   ] ++ optionals stdenv.hostPlatform.isMinGW [
     windows.dlfcn
     windows.mingw_w64_pthreads
-  ] ++ optionals stdenv.isDarwin [
+  ] ++ optionals stdenv.hostPlatform.isDarwin [
     configd
   ] ++ optionals tzdataSupport [
     tzdata
@@ -293,9 +293,9 @@ in with passthru; stdenv.mkDerivation (finalAttrs: {
     bash # only required for patchShebangs
   ] ++ buildInputs;
 
-  prePatch = optionalString stdenv.isDarwin ''
+  prePatch = optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure --replace-fail '`/usr/bin/arch`' '"i386"'
-  '' + optionalString (pythonOlder "3.9" && stdenv.isDarwin && x11Support) ''
+  '' + optionalString (pythonOlder "3.9" && stdenv.hostPlatform.isDarwin && x11Support) ''
     # Broken on >= 3.9; replaced with ./3.9/darwin-tcl-tk.patch
     substituteInPlace setup.py --replace-fail /Library/Frameworks /no-such-path
   '';
@@ -307,7 +307,7 @@ in with passthru; stdenv.mkDerivation (finalAttrs: {
     # (since it will do a futile invocation of gcc (!) to find
     # libuuid, slowing down program startup a lot).
     noldconfigPatch
-  ] ++ optionals (stdenv.hostPlatform != stdenv.buildPlatform && stdenv.isFreeBSD) [
+  ] ++ optionals (stdenv.hostPlatform != stdenv.buildPlatform && stdenv.hostPlatform.isFreeBSD) [
     # Cross compilation only supports a limited number of "known good"
     # configurations. If you're reading this and it's been a long time
     # since this diff, consider submitting this patch upstream!
@@ -327,7 +327,7 @@ in with passthru; stdenv.mkDerivation (finalAttrs: {
     ./3.7/darwin-libutil.patch
   ] ++ optionals (pythonAtLeast "3.11") [
     ./3.11/darwin-libutil.patch
-  ] ++ optionals (pythonAtLeast "3.9" && pythonOlder "3.11" && stdenv.isDarwin) [
+  ] ++ optionals (pythonAtLeast "3.9" && pythonOlder "3.11" && stdenv.hostPlatform.isDarwin) [
     # Stop checking for TCL/TK in global macOS locations
     ./3.9/darwin-tcl-tk.patch
   ] ++ optionals (hasDistutilsCxxPatch && pythonOlder "3.12") [
@@ -384,7 +384,7 @@ in with passthru; stdenv.mkDerivation (finalAttrs: {
   env = {
     CPPFLAGS = concatStringsSep " " (map (p: "-I${getDev p}/include") buildInputs);
     LDFLAGS = concatStringsSep " " (map (p: "-L${getLib p}/lib") buildInputs);
-    LIBS = "${optionalString (!stdenv.isDarwin) "-lcrypt"}";
+    LIBS = "${optionalString (!stdenv.hostPlatform.isDarwin) "-lcrypt"}";
     NIX_LDFLAGS = lib.optionalString (stdenv.cc.isGNU && !stdenv.hostPlatform.isStatic) ({
       "glibc" = "-lgcc_s";
       "musl" = "-lgcc_eh";
@@ -414,7 +414,7 @@ in with passthru; stdenv.mkDerivation (finalAttrs: {
     (enableFeature enableGIL "gil")
   ] ++ optionals enableOptimizations [
     "--enable-optimizations"
-  ] ++ optionals (stdenv.isDarwin && configd == null) [
+  ] ++ optionals (stdenv.hostPlatform.isDarwin && configd == null) [
     # Make conditional on Darwin for now to avoid causing Linux rebuilds.
     "py_cv_module__scproxy=n/a"
   ] ++ optionals (sqlite != null) [
@@ -467,16 +467,16 @@ in with passthru; stdenv.mkDerivation (finalAttrs: {
     for path in /usr /sw /opt /pkg; do
       substituteInPlace ./setup.py --replace-warn $path /no-such-path
     done
-  '' + optionalString stdenv.isDarwin ''
+  '' + optionalString stdenv.hostPlatform.isDarwin ''
     # Override the auto-detection in setup.py, which assumes a universal build
-    export PYTHON_DECIMAL_WITH_MACHINE=${if stdenv.isAarch64 then "uint128" else "x64"}
+    export PYTHON_DECIMAL_WITH_MACHINE=${if stdenv.hostPlatform.isAarch64 then "uint128" else "x64"}
     # Ensure that modern platform features are enabled on Darwin in spite of having no version suffix.
     sed -E -i -e 's|Darwin/\[12\]\[0-9\]\.\*|Darwin/*|' configure
   '' + optionalString (pythonAtLeast "3.11") ''
     # Also override the auto-detection in `configure`.
     substituteInPlace configure \
-      --replace-fail 'libmpdec_machine=universal' 'libmpdec_machine=${if stdenv.isAarch64 then "uint128" else "x64"}'
-  '' + optionalString (stdenv.isDarwin && x11Support && pythonAtLeast "3.11") ''
+      --replace-fail 'libmpdec_machine=universal' 'libmpdec_machine=${if stdenv.hostPlatform.isAarch64 then "uint128" else "x64"}'
+  '' + optionalString (stdenv.hostPlatform.isDarwin && x11Support && pythonAtLeast "3.11") ''
     export TCLTK_LIBS="-L${tcl}/lib -L${tk}/lib -l${tcl.libPrefix} -l${tk.libPrefix}"
     export TCLTK_CFLAGS="-I${tcl}/include -I${tk}/include"
   '' + optionalString stdenv.hostPlatform.isMusl ''
diff --git a/pkgs/development/interpreters/python/default.nix b/pkgs/development/interpreters/python/default.nix
index e70816a90eee..3f8338845d63 100644
--- a/pkgs/development/interpreters/python/default.nix
+++ b/pkgs/development/interpreters/python/default.nix
@@ -139,7 +139,7 @@ in {
 
     hash = "sha256-3WHYjaJ0ws4s7HdmfUo9+aZSvMUOJvkJkdTdCvZrzPQ=";
     pythonVersion = "2.7";
-    db = db.override { dbmSupport = !stdenv.isDarwin; };
+    db = db.override { dbmSupport = !stdenv.hostPlatform.isDarwin; };
     python = __splicedPackages.pythonInterpreters.pypy27_prebuilt;
     inherit passthruFun;
     inherit (darwin) libunwind;
@@ -156,7 +156,7 @@ in {
 
     hash = "sha256-56IEbH5sJfw4aru1Ey6Sp8wkkeOTVpmpRstdy7NCwqo=";
     pythonVersion = "3.9";
-    db = db.override { dbmSupport = !stdenv.isDarwin; };
+    db = db.override { dbmSupport = !stdenv.hostPlatform.isDarwin; };
     python = __splicedPackages.pypy27;
     inherit passthruFun;
     inherit (darwin) libunwind;
diff --git a/pkgs/development/interpreters/python/mk-python-derivation.nix b/pkgs/development/interpreters/python/mk-python-derivation.nix
index d75fea0eaef1..086ebfb3ed04 100644
--- a/pkgs/development/interpreters/python/mk-python-derivation.nix
+++ b/pkgs/development/interpreters/python/mk-python-derivation.nix
@@ -307,7 +307,7 @@ let
 
     inherit strictDeps;
 
-    LANG = "${if python.stdenv.isDarwin then "en_US" else "C"}.UTF-8";
+    LANG = "${if python.stdenv.hostPlatform.isDarwin then "en_US" else "C"}.UTF-8";
 
     # Python packages don't have a checkPhase, only an installCheckPhase
     doCheck = false;
diff --git a/pkgs/development/interpreters/python/pypy/default.nix b/pkgs/development/interpreters/python/pypy/default.nix
index 0380c29e9e75..3dcbce42cf0a 100644
--- a/pkgs/development/interpreters/python/pypy/default.nix
+++ b/pkgs/development/interpreters/python/pypy/default.nix
@@ -63,7 +63,7 @@ in with passthru; stdenv.mkDerivation rec {
     zlib
   ] ++ lib.optionals (lib.any (l: l == optimizationLevel) [ "0" "1" "2" "3"]) [
     boehmgc
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libunwind Security
   ];
 
@@ -132,9 +132,9 @@ in with passthru; stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  preFixup = lib.optionalString (stdenv.isDarwin) ''
+  preFixup = lib.optionalString (stdenv.hostPlatform.isDarwin) ''
     install_name_tool -change @rpath/lib${executable}-c.dylib $out/lib/lib${executable}-c.dylib $out/bin/${executable}
-  '' + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     mkdir -p $out/${executable}-c/pypy/bin
     mv $out/bin/${executable} $out/${executable}-c/pypy/bin/${executable}
     ln -s $out/${executable}-c/pypy/bin/${executable} $out/bin/${executable}
diff --git a/pkgs/development/interpreters/python/pypy/prebuilt.nix b/pkgs/development/interpreters/python/pypy/prebuilt.nix
index 4b47c642eca4..95e392bc37b7 100644
--- a/pkgs/development/interpreters/python/pypy/prebuilt.nix
+++ b/pkgs/development/interpreters/python/pypy/prebuilt.nix
@@ -71,15 +71,15 @@ in with passthru; stdenv.mkDerivation {
     sqlite
     zlib
     stdenv.cc.cc.libgcc or null
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     tcl-8_5
     tk-8_5
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     tcl-8_6
     tk-8_6
   ];
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   installPhase = ''
     runHook preInstall
@@ -88,7 +88,7 @@ in with passthru; stdenv.mkDerivation {
     echo "Moving files to $out"
     mv -t $out bin include lib
     mv $out/bin/libpypy*-c${stdenv.hostPlatform.extensions.sharedLibrary} $out/lib/
-    ${lib.optionalString stdenv.isLinux ''
+    ${lib.optionalString stdenv.hostPlatform.isLinux ''
       rm $out/bin/*.debug
     ''}
 
@@ -101,12 +101,12 @@ in with passthru; stdenv.mkDerivation {
     runHook postInstall
   '';
 
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     find $out/{lib,lib_pypy*} -name "*.so" \
       -exec patchelf \
         --replace-needed libtinfow.so.6 libncursesw.so.6 \
         --replace-needed libgdbm.so.4 libgdbm_compat.so.4 {} \;
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool \
       -change \
         @rpath/lib${libPrefix}-c.dylib \
@@ -119,12 +119,12 @@ in with passthru; stdenv.mkDerivation {
         $out/bin/${libPrefix}
     install_name_tool \
       -change \
-        /opt/homebrew${lib.optionalString stdenv.isx86_64 "_x86_64"}/opt/tcl-tk/lib/libtcl8.6.dylib \
+        /opt/homebrew${lib.optionalString stdenv.hostPlatform.isx86_64 "_x86_64"}/opt/tcl-tk/lib/libtcl8.6.dylib \
         ${tcl-8_6}/lib/libtcl8.6.dylib \
         $out/lib/${libPrefix}/_tkinter/*.so
     install_name_tool \
       -change \
-        /opt/homebrew${lib.optionalString stdenv.isx86_64 "_x86_64"}/opt/tcl-tk/lib/libtk8.6.dylib \
+        /opt/homebrew${lib.optionalString stdenv.hostPlatform.isx86_64 "_x86_64"}/opt/tcl-tk/lib/libtk8.6.dylib \
         ${tk-8_6}/lib/libtk8.6.dylib \
         $out/lib/${libPrefix}/_tkinter/*.so
   '';
diff --git a/pkgs/development/interpreters/python/pypy/prebuilt_2_7.nix b/pkgs/development/interpreters/python/pypy/prebuilt_2_7.nix
index 37a06f9f61ed..0d7e2d131abc 100644
--- a/pkgs/development/interpreters/python/pypy/prebuilt_2_7.nix
+++ b/pkgs/development/interpreters/python/pypy/prebuilt_2_7.nix
@@ -71,15 +71,15 @@ in with passthru; stdenv.mkDerivation {
     sqlite
     zlib
     stdenv.cc.cc.libgcc or null
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     tcl-8_5
     tk-8_5
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     tcl-8_6
     tk-8_6
   ];
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   installPhase = ''
     runHook preInstall
@@ -88,7 +88,7 @@ in with passthru; stdenv.mkDerivation {
     echo "Moving files to $out"
     mv -t $out bin include lib-python lib_pypy site-packages
     mv $out/bin/libpypy*-c${stdenv.hostPlatform.extensions.sharedLibrary} $out/lib/
-    ${lib.optionalString stdenv.isLinux ''
+    ${lib.optionalString stdenv.hostPlatform.isLinux ''
       mv lib/libffi.so.6* $out/lib/
       rm $out/bin/*.debug
     ''}
@@ -102,12 +102,12 @@ in with passthru; stdenv.mkDerivation {
     runHook postInstall
   '';
 
-  preFixup = lib.optionalString (stdenv.isLinux) ''
+  preFixup = lib.optionalString (stdenv.hostPlatform.isLinux) ''
     find $out/{lib,lib_pypy*} -name "*.so" \
       -exec patchelf \
         --replace-needed libtinfow.so.6 libncursesw.so.6 \
         --replace-needed libgdbm.so.4 libgdbm_compat.so.4 {} \;
-  '' + lib.optionalString (stdenv.isDarwin) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin) ''
     install_name_tool \
       -change \
         @rpath/lib${executable}-c.dylib \
@@ -115,12 +115,12 @@ in with passthru; stdenv.mkDerivation {
         $out/bin/${executable}
     install_name_tool \
       -change \
-        /opt/homebrew${lib.optionalString stdenv.isx86_64 "_x86_64"}/opt/tcl-tk/lib/libtcl8.6.dylib \
+        /opt/homebrew${lib.optionalString stdenv.hostPlatform.isx86_64 "_x86_64"}/opt/tcl-tk/lib/libtcl8.6.dylib \
         ${tcl-8_6}/lib/libtcl8.6.dylib \
         $out/lib_pypy/_tkinter/*.so
     install_name_tool \
       -change \
-        /opt/homebrew${lib.optionalString stdenv.isx86_64 "_x86_64"}/opt/tcl-tk/lib/libtk8.6.dylib \
+        /opt/homebrew${lib.optionalString stdenv.hostPlatform.isx86_64 "_x86_64"}/opt/tcl-tk/lib/libtk8.6.dylib \
         ${tk-8_6}/lib/libtk8.6.dylib \
         $out/lib_pypy/_tkinter/*.so
   '';
diff --git a/pkgs/development/interpreters/python/python2/mk-python-derivation.nix b/pkgs/development/interpreters/python/python2/mk-python-derivation.nix
index 0fb6a5d57f22..427c94241070 100644
--- a/pkgs/development/interpreters/python/python2/mk-python-derivation.nix
+++ b/pkgs/development/interpreters/python/python2/mk-python-derivation.nix
@@ -204,7 +204,7 @@ let
 
     inherit strictDeps;
 
-    LANG = "${if python.stdenv.isDarwin then "en_US" else "C"}.UTF-8";
+    LANG = "${if python.stdenv.hostPlatform.isDarwin then "en_US" else "C"}.UTF-8";
 
     # Python packages don't have a checkPhase, only an installCheckPhase
     doCheck = false;
diff --git a/pkgs/development/interpreters/python/rustpython/default.nix b/pkgs/development/interpreters/python/rustpython/default.nix
index febb7f5cfa24..98d3ed7c0efb 100644
--- a/pkgs/development/interpreters/python/rustpython/default.nix
+++ b/pkgs/development/interpreters/python/rustpython/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
   # freeze the stdlib into the rustpython binary
   cargoBuildFlags = [ "--features=freeze-stdlib" ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ SystemConfiguration ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ SystemConfiguration ];
 
   nativeCheckInputs = [ python3 ];
 
@@ -41,6 +41,6 @@ rustPlatform.buildRustPackage rec {
     #       "_utimensat", referenced from:
     #           rustpython_vm::function::builtin::IntoPyNativeFn::into_func::... in
     #           rustpython-10386d81555652a7.rustpython_vm-f0b5bedfcf056d0b.rustpython_vm.7926b68e665728ca-cgu.08.rcgu.o.rcgu.o
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 }
diff --git a/pkgs/development/interpreters/python/tests.nix b/pkgs/development/interpreters/python/tests.nix
index 99bc38890c6a..6574b6295744 100644
--- a/pkgs/development/interpreters/python/tests.nix
+++ b/pkgs/development/interpreters/python/tests.nix
@@ -38,7 +38,7 @@ let
         is_nixenv = "False";
         is_virtualenv = "False";
       };
-    } // lib.optionalAttrs (!python.isPyPy && !stdenv.isDarwin) {
+    } // lib.optionalAttrs (!python.isPyPy && !stdenv.hostPlatform.isDarwin) {
       # Use virtualenv from a Nix env.
       # Fails on darwin with
       #   virtualenv: error: argument dest: the destination . is not write-able at /nix/store
@@ -106,7 +106,7 @@ let
   # Integration tests involving the package set.
   # All PyPy package builds are broken at the moment
   integrationTests = lib.optionalAttrs (!python.isPyPy) (
-    lib.optionalAttrs (python.isPy3k && !stdenv.isDarwin) { # darwin has no split-debug
+    lib.optionalAttrs (python.isPy3k && !stdenv.hostPlatform.isDarwin) { # darwin has no split-debug
       cpython-gdb = callPackage ./tests/test_cpython_gdb {
         interpreter = python;
       };
@@ -222,7 +222,7 @@ let
       }
     ) {};
     pythonWithRequests = requests.pythonModule.withPackages (ps: [ requests ]);
-    in lib.optionalAttrs (python.isPy3k && stdenv.isLinux)
+    in lib.optionalAttrs (python.isPy3k && stdenv.hostPlatform.isLinux)
     {
       condaExamplePackage = runCommand "import-requests" {} ''
         ${pythonWithRequests.interpreter} -c "import requests" > $out
diff --git a/pkgs/development/interpreters/racket/default.nix b/pkgs/development/interpreters/racket/default.nix
index 6f06b31b56a6..4a16416374ff 100644
--- a/pkgs/development/interpreters/racket/default.nix
+++ b/pkgs/development/interpreters/racket/default.nix
@@ -56,7 +56,7 @@ let
       readline
       sqlite
     ]
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       libGL
       libGLU
     ]
@@ -83,7 +83,7 @@ stdenv.mkDerivation rec {
   FONTCONFIG_FILE = fontsConf;
   LD_LIBRARY_PATH = libPath;
   NIX_LDFLAGS = lib.concatStringsSep " " [
-    (lib.optionalString (stdenv.cc.isGNU && !stdenv.isDarwin) "-lgcc_s")
+    (lib.optionalString (stdenv.cc.isGNU && !stdenv.hostPlatform.isDarwin) "-lgcc_s")
   ];
 
   nativeBuildInputs = [
@@ -101,7 +101,7 @@ stdenv.mkDerivation rec {
       gtk3
       ncurses
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       CoreFoundation
     ];
@@ -141,15 +141,15 @@ stdenv.mkDerivation rec {
       cd src/build
 
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       gappsWrapperArgs+=("--prefix"   "LD_LIBRARY_PATH" ":" ${libPath})
       gappsWrapperArgs+=("--set"      "LOCALE_ARCHIVE" "${glibcLocales}/lib/locale/locale-archive")
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       gappsWrapperArgs+=("--prefix" "DYLD_LIBRARY_PATH" ":" ${libPath})
     '';
 
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Cannot set DYLD_LIBRARY_PATH as an attr of this drv, becasue dynamic
     # linker environment variables like this are purged.
     # See: https://apple.stackexchange.com/a/212954/167199
@@ -163,14 +163,14 @@ stdenv.mkDerivation rec {
     export DYLD_FALLBACK_LIBRARY_PATH="${libPath}"
   '';
 
-  shared = if stdenv.isDarwin then "dylib" else "shared";
+  shared = if stdenv.hostPlatform.isDarwin then "dylib" else "shared";
   configureFlags =
     [
       "--enable-${shared}"
       "--enable-lt=${libtool}/bin/libtool"
     ]
     ++ lib.optionals disableDocs [ "--disable-docs" ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "--disable-strip"
       "--enable-xonx"
     ];
@@ -179,7 +179,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = false;
 
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Programmable programming language";
diff --git a/pkgs/development/interpreters/racket/racket_7_9.nix b/pkgs/development/interpreters/racket/racket_7_9.nix
index 91f7654fcad2..c82d232e11a4 100644
--- a/pkgs/development/interpreters/racket/racket_7_9.nix
+++ b/pkgs/development/interpreters/racket/racket_7_9.nix
@@ -76,8 +76,8 @@ stdenv.mkDerivation rec {
   FONTCONFIG_FILE = fontsConf;
   LD_LIBRARY_PATH = libPath;
   NIX_LDFLAGS = lib.concatStringsSep " " [
-    (lib.optionalString (stdenv.cc.isGNU && !stdenv.isDarwin) "-lgcc_s")
-    (lib.optionalString stdenv.isDarwin "-framework CoreFoundation")
+    (lib.optionalString (stdenv.cc.isGNU && !stdenv.hostPlatform.isDarwin) "-lgcc_s")
+    (lib.optionalString stdenv.hostPlatform.isDarwin "-framework CoreFoundation")
   ];
 
   nativeBuildInputs = [
@@ -94,7 +94,7 @@ stdenv.mkDerivation rec {
       gsettings-desktop-schemas
       gtk3
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       CoreFoundation
     ];
@@ -110,14 +110,14 @@ stdenv.mkDerivation rec {
     gappsWrapperArgs+=("--prefix" "LD_LIBRARY_PATH" ":" ${LD_LIBRARY_PATH})
   '';
 
-  shared = if stdenv.isDarwin then "dylib" else "shared";
+  shared = if stdenv.hostPlatform.isDarwin then "dylib" else "shared";
   configureFlags =
     [
       "--enable-${shared}"
       "--enable-lt=${libtool}/bin/libtool"
     ]
     ++ lib.optionals disableDocs [ "--disable-docs" ]
-    ++ lib.optionals stdenv.isDarwin [ "--enable-xonx" ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "--enable-xonx" ];
 
   configureScript = "../configure";
 
@@ -145,6 +145,6 @@ stdenv.mkDerivation rec {
       "x86_64-linux"
       "aarch64-linux"
     ];
-    broken = stdenv.isDarwin; # No support yet for setting FFI lookup path
+    broken = stdenv.hostPlatform.isDarwin; # No support yet for setting FFI lookup path
   };
 }
diff --git a/pkgs/development/interpreters/rakudo/moarvm.nix b/pkgs/development/interpreters/rakudo/moarvm.nix
index e4b0da036233..5537f13041d7 100644
--- a/pkgs/development/interpreters/rakudo/moarvm.nix
+++ b/pkgs/development/interpreters/rakudo/moarvm.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     patchShebangs .
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Configure.pl \
       --replace '`/usr/bin/arch`' '"${stdenv.hostPlatform.darwinArch}"' \
       --replace '/usr/bin/arch' "$(type -P true)" \
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
       --replace '`sw_vers -productVersion`' '"11.0"'
   '';
 
-  buildInputs = [ perl ] ++ lib.optionals stdenv.isDarwin [ CoreServices ApplicationServices ];
+  buildInputs = [ perl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ApplicationServices ];
   doCheck = false; # MoarVM does not come with its own test suite
 
   configureScript = "${perl}/bin/perl ./Configure.pl";
diff --git a/pkgs/development/interpreters/ruby/default.nix b/pkgs/development/interpreters/ruby/default.nix
index 596c778c0ff5..369d242192ac 100644
--- a/pkgs/development/interpreters/ruby/default.nix
+++ b/pkgs/development/interpreters/ruby/default.nix
@@ -78,7 +78,7 @@ let
 
         nativeBuildInputs = [ autoreconfHook bison removeReferencesTo ]
           ++ (op docSupport groff)
-          ++ (ops (dtraceSupport && stdenv.isLinux) [ systemtap libsystemtap ])
+          ++ (ops (dtraceSupport && stdenv.hostPlatform.isLinux) [ systemtap libsystemtap ])
           ++ ops yjitSupport [ rustPlatform.cargoSetupHook cargo rustc ]
           ++ op useBaseRuby baseRuby;
         buildInputs = [ autoconf ]
@@ -92,8 +92,8 @@ let
           # support is not enabled, so add readline to the build inputs if curses
           # support is disabled (if it's enabled, we already have it) and we're
           # running on darwin
-          ++ op (!cursesSupport && stdenv.isDarwin) readline
-          ++ ops stdenv.isDarwin [ libiconv libobjc libunwind Foundation ];
+          ++ op (!cursesSupport && stdenv.hostPlatform.isDarwin) readline
+          ++ ops stdenv.hostPlatform.isDarwin [ libiconv libobjc libunwind Foundation ];
         propagatedBuildInputs = op jemallocSupport jemalloc;
 
         enableParallelBuilding = true;
@@ -156,7 +156,7 @@ let
           # overrides that by enabling `-O2` which is the minimum optimization
           # needed for `_FORTIFY_SOURCE`.
         ] ++ lib.optional stdenv.cc.isGNU "CFLAGS=-O3" ++ [
-        ] ++ ops stdenv.isDarwin [
+        ] ++ ops stdenv.hostPlatform.isDarwin [
           # on darwin, we have /usr/include/tk.h -- so the configure script detects
           # that tk is installed
           "--with-out-ext=tk"
diff --git a/pkgs/development/interpreters/rune/default.nix b/pkgs/development/interpreters/rune/default.nix
index f4dc8ef1f745..41d61aa9cc8b 100644
--- a/pkgs/development/interpreters/rune/default.nix
+++ b/pkgs/development/interpreters/rune/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-yMqxd7PlpEEVS0jJwProaVjKUsU5TuebGTMrWiMFsM8=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/development/interpreters/snobol4/default.nix b/pkgs/development/interpreters/snobol4/default.nix
index 2d276e6a0362..c0edda03dc64 100644
--- a/pkgs/development/interpreters/snobol4/default.nix
+++ b/pkgs/development/interpreters/snobol4/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   # enable all features (undocumented, based on manual review of configure script)
   buildInputs = [ bzip2 libffi openssl readline sqlite tcl xz zlib ]
     # ndbm compat library
-    ++ lib.optional stdenv.isLinux gdbm;
+    ++ lib.optional stdenv.hostPlatform.isLinux gdbm;
   configureFlags = lib.optional (tcl != null) "--with-tcl=${tcl}/lib/tclConfig.sh";
 
   # INSTALL says "parallel make will fail"
diff --git a/pkgs/development/interpreters/spidermonkey/common.nix b/pkgs/development/interpreters/spidermonkey/common.nix
index cc1d3923fef9..5feca82f6cf1 100644
--- a/pkgs/development/interpreters/spidermonkey/common.nix
+++ b/pkgs/development/interpreters/spidermonkey/common.nix
@@ -106,7 +106,7 @@ stdenv.mkDerivation (finalAttrs: rec {
   ] ++ lib.optionals (lib.versionOlder version "91") [
     autoconf213
     yasm # to buid icu? seems weird
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     xcbuild
   ];
 
@@ -115,7 +115,7 @@ stdenv.mkDerivation (finalAttrs: rec {
     nspr
     readline
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libobjc
     libiconv
   ];
@@ -213,7 +213,7 @@ stdenv.mkDerivation (finalAttrs: rec {
     homepage = "https://spidermonkey.dev/";
     license = licenses.mpl20; # TODO: MPL/GPL/LGPL tri-license for 78.
     maintainers = with maintainers; [ abbradar lostnet catap ];
-    broken = stdenv.isDarwin && versionAtLeast version "115"; # Requires SDK 13.3 (see #242666).
+    broken = stdenv.hostPlatform.isDarwin && versionAtLeast version "115"; # Requires SDK 13.3 (see #242666).
     platforms = platforms.unix;
   };
 })
diff --git a/pkgs/development/interpreters/supercollider/default.nix b/pkgs/development/interpreters/supercollider/default.nix
index 7eb0de6f689f..344d00703164 100644
--- a/pkgs/development/interpreters/supercollider/default.nix
+++ b/pkgs/development/interpreters/supercollider/default.nix
@@ -29,7 +29,7 @@ mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config qttools ];
 
   buildInputs = [ gcc libjack2 libsndfile fftw curl libXt qtbase qtwebengine qtwebsockets readline ]
-    ++ lib.optional (!stdenv.isDarwin) alsa-lib
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) alsa-lib
     ++ lib.optional useSCEL emacs;
 
   hardeningDisable = [ "stackprotector" ];
diff --git a/pkgs/development/interpreters/tcl/generic.nix b/pkgs/development/interpreters/tcl/generic.nix
index 63eafd9c3e81..5df6fb28a304 100644
--- a/pkgs/development/interpreters/tcl/generic.nix
+++ b/pkgs/development/interpreters/tcl/generic.nix
@@ -36,7 +36,7 @@ let
         # Don't install tzdata because NixOS already has a more up-to-date copy.
         "--with-tzdata=no"
         "tcl_cv_strtod_unbroken=ok"
-      ] ++ lib.optional stdenv.is64bit "--enable-64bit";
+      ] ++ lib.optional stdenv.hostPlatform.is64bit "--enable-64bit";
 
       enableParallelBuilding = true;
 
diff --git a/pkgs/development/interpreters/tclreadline/default.nix b/pkgs/development/interpreters/tclreadline/default.nix
index de671bab5739..de5f3174506b 100644
--- a/pkgs/development/interpreters/tclreadline/default.nix
+++ b/pkgs/development/interpreters/tclreadline/default.nix
@@ -41,7 +41,7 @@ tcl.mkTclDerivation rec {
 
   # The provided makefile leaves a wrong reference to /build/ in RPATH,
   # so we fix it after checking that everything is also present in $out
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     needed_libraries=$(ls .libs | grep '\.\(so\|la\)$')
     for lib in $needed_libraries; do
       if ! ls $out/lib | grep "$lib"; then
diff --git a/pkgs/development/interpreters/unicon-lang/default.nix b/pkgs/development/interpreters/unicon-lang/default.nix
index f0a45495d70d..4435b9c02925 100644
--- a/pkgs/development/interpreters/unicon-lang/default.nix
+++ b/pkgs/development/interpreters/unicon-lang/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Very high level, goal-directed, object-oriented, general purpose applications language";
     maintainers = [ ];
     platforms = platforms.linux;
diff --git a/pkgs/development/interpreters/wamr/default.nix b/pkgs/development/interpreters/wamr/default.nix
index e5b9b904a061..36a484b2ddce 100644
--- a/pkgs/development/interpreters/wamr/default.nix
+++ b/pkgs/development/interpreters/wamr/default.nix
@@ -17,14 +17,14 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ cmake ];
 
-  cmakeFlags = lib.optionals stdenv.isDarwin [
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=${stdenv.hostPlatform.darwinSdkVersion}"
   ];
 
   sourceRoot = let
-    platform = if stdenv.isLinux then
+    platform = if stdenv.hostPlatform.isLinux then
         "linux"
-      else if stdenv.isDarwin then
+      else if stdenv.hostPlatform.isDarwin then
         "darwin"
       else throw "unsupported platform";
   in "${finalAttrs.src.name}/product-mini/platforms/${platform}";
diff --git a/pkgs/development/interpreters/wasmer/default.nix b/pkgs/development/interpreters/wasmer/default.nix
index 2256851c3d2f..64ff6306d2ee 100644
--- a/pkgs/development/interpreters/wasmer/default.nix
+++ b/pkgs/development/interpreters/wasmer/default.nix
@@ -8,8 +8,8 @@
 , CoreFoundation
 , SystemConfiguration
 , Security
-, withLLVM ? !stdenv.isDarwin
-, withSinglepass ? !(stdenv.isDarwin && stdenv.isx86_64)
+, withLLVM ? !stdenv.hostPlatform.isDarwin
+, withSinglepass ? !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64)
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
     llvmPackages.llvm
     libffi
     libxml2
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
     SystemConfiguration
     Security
diff --git a/pkgs/development/interpreters/wasmtime/default.nix b/pkgs/development/interpreters/wasmtime/default.nix
index 19b309208bc7..dc4bfced92cb 100644
--- a/pkgs/development/interpreters/wasmtime/default.nix
+++ b/pkgs/development/interpreters/wasmtime/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   outputs = [ "out" "dev" ];
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # rustfmt is brought into scope to fix the following
   #   warning: cranelift-codegen@0.108.0:
@@ -45,7 +45,7 @@ rustPlatform.buildRustPackage rec {
     install -d -m0755 $dev/include/wasmtime
     install -m0644 $src/crates/c-api/include/*.h $dev/include
     install -m0644 $src/crates/c-api/include/wasmtime/*.h $dev/include/wasmtime
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id \
       $dev/lib/libwasmtime.dylib \
       $dev/lib/libwasmtime.dylib
diff --git a/pkgs/development/libraries/SDL2/default.nix b/pkgs/development/libraries/SDL2/default.nix
index 3b423e79ed13..bc7ffd7b991b 100644
--- a/pkgs/development/libraries/SDL2/default.nix
+++ b/pkgs/development/libraries/SDL2/default.nix
@@ -8,7 +8,7 @@
   libGLSupported ? lib.elem stdenv.hostPlatform.system mesa.meta.platforms,
   openglSupport ? libGLSupported,
   libGL,
-  alsaSupport ? stdenv.isLinux && !stdenv.hostPlatform.isAndroid,
+  alsaSupport ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid,
   alsa-lib,
   x11Support ? !stdenv.hostPlatform.isWindows && !stdenv.hostPlatform.isAndroid,
   libX11,
@@ -21,7 +21,7 @@
   libXext,
   libXxf86vm,
   libXrandr,
-  waylandSupport ? stdenv.isLinux && !stdenv.hostPlatform.isAndroid,
+  waylandSupport ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid,
   wayland,
   wayland-protocols,
   wayland-scanner,
@@ -29,17 +29,17 @@
   libdrm,
   mesa,
   libxkbcommon,
-  dbusSupport ? stdenv.isLinux && !stdenv.hostPlatform.isAndroid,
+  dbusSupport ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid,
   dbus,
-  udevSupport ? stdenv.isLinux && !stdenv.hostPlatform.isAndroid,
+  udevSupport ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid,
   udev,
   ibusSupport ? false,
   ibus,
-  libdecorSupport ? stdenv.isLinux && !stdenv.hostPlatform.isAndroid,
+  libdecorSupport ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid,
   libdecor,
-  pipewireSupport ? stdenv.isLinux && !stdenv.hostPlatform.isAndroid,
+  pipewireSupport ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid,
   pipewire, # NOTE: must be built with SDL2 without pipewire support
-  pulseaudioSupport ? config.pulseaudio or stdenv.isLinux && !stdenv.hostPlatform.isAndroid,
+  pulseaudioSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid,
   libpulseaudio,
   AudioUnit,
   Cocoa,
@@ -112,7 +112,7 @@ stdenv.mkDerivation (finalAttrs: {
   dlopenPropagatedBuildInputs =
     [ ]
     # Propagated for #include <GLES/gl.h> in SDL_opengles.h.
-    ++ lib.optional (openglSupport && !stdenv.isDarwin) libGL
+    ++ lib.optional (openglSupport && !stdenv.hostPlatform.isDarwin) libGL
     # Propagated for #include <X11/Xlib.h> and <X11/Xatom.h> in SDL_syswm.h.
     ++ lib.optionals x11Support [ libX11 ];
 
@@ -153,7 +153,7 @@ stdenv.mkDerivation (finalAttrs: {
     ++ finalAttrs.dlopenBuildInputs
     ++ lib.optional ibusSupport ibus
     ++ lib.optionals waylandSupport [ wayland-protocols ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       AudioUnit
       Cocoa
       CoreAudio
@@ -169,7 +169,7 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optional (!x11Support) "--without-x"
     ++ lib.optional alsaSupport "--with-alsa-prefix=${alsa-lib.out}/lib"
     ++ lib.optional stdenv.hostPlatform.isWindows "--disable-video-opengles"
-    ++ lib.optional stdenv.isDarwin "--disable-sdltest";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "--disable-sdltest";
 
   # We remove libtool .la files when static libs are requested,
   # because they make the builds of downstream libs like `SDL_tff`
diff --git a/pkgs/development/libraries/aalib/default.nix b/pkgs/development/libraries/aalib/default.nix
index 903364ea27f6..3ba1620fe8f3 100644
--- a/pkgs/development/libraries/aalib/default.nix
+++ b/pkgs/development/libraries/aalib/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   setOutputFlags = false; # Doesn't support all the flags
 
   patches = [ ./clang.patch ] # Fix implicit `int` on `main` error with newer versions of clang
-    ++ lib.optionals stdenv.isDarwin [ ./darwin.patch ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ ./darwin.patch ];
 
   # The fuloong2f is not supported by aalib still
   preConfigure = ''
diff --git a/pkgs/development/libraries/abseil-cpp/202103.nix b/pkgs/development/libraries/abseil-cpp/202103.nix
index 04af3153719a..0dfd60d17507 100644
--- a/pkgs/development/libraries/abseil-cpp/202103.nix
+++ b/pkgs/development/libraries/abseil-cpp/202103.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
       url = "https://github.com/abseil/abseil-cpp/commit/808bc202fc13e85a7948db0d7fb58f0f051200b1.patch";
       sha256 = "sha256-ayY/aV/xWOdEyFSDqV7B5WDGvZ0ASr/aeBeYwP5RZVc=";
     })
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # Don’t propagate the path to CoreFoundation. Otherwise, it’s impossible to build packages
     # that require a different SDK other than the default one.
     ./cmake-core-foundation.patch
diff --git a/pkgs/development/libraries/abseil-cpp/202301.nix b/pkgs/development/libraries/abseil-cpp/202301.nix
index 62d98d77a38f..502437280246 100644
--- a/pkgs/development/libraries/abseil-cpp/202301.nix
+++ b/pkgs/development/libraries/abseil-cpp/202301.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-7C/QIXYRyUyNVVE0tqmv8b5g/uWc58iBI5jzdtddQ+U=";
   };
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     # Don’t propagate the path to CoreFoundation. Otherwise, it’s impossible to build packages
     # that require a different SDK other than the default one.
     ./cmake-core-foundation.patch
diff --git a/pkgs/development/libraries/adns/default.nix b/pkgs/development/libraries/adns/default.nix
index 60de8957d088..eeb6c07bf11d 100644
--- a/pkgs/development/libraries/adns/default.nix
+++ b/pkgs/development/libraries/adns/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   configureFlags = lib.optional stdenv.hostPlatform.isStatic "--disable-dynamic";
 
   preConfigure =
-    lib.optionalString stdenv.isDarwin "sed -i -e 's|-Wl,-soname=$(SHLIBSONAME)||' configure";
+    lib.optionalString stdenv.hostPlatform.isDarwin "sed -i -e 's|-Wl,-soname=$(SHLIBSONAME)||' configure";
 
   # Autogenerated headers miss interdependencies in Makefile, fail parallel build:
   #  https://debbugs.gnu.org/cgi/bugreport.cgi?bug=51329
@@ -27,12 +27,12 @@ stdenv.mkDerivation rec {
   doCheck = false;
 
   postInstall = let suffix = lib.versions.majorMinor version;
-  in lib.optionalString stdenv.isDarwin ''
+  in lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id $out/lib/libadns.so.${suffix} $out/lib/libadns.so.${suffix}
   '';
 
   # darwin executables fail, but I don't want to fail the 100-500 packages depending on this lib
-  doInstallCheck = !stdenv.isDarwin;
+  doInstallCheck = !stdenv.hostPlatform.isDarwin;
   installCheckPhase = ''
     set -eo pipefail
 
diff --git a/pkgs/development/libraries/aemu/default.nix b/pkgs/development/libraries/aemu/default.nix
index 0a2f6fa8b8b2..c39c68cbce1e 100644
--- a/pkgs/development/libraries/aemu/default.nix
+++ b/pkgs/development/libraries/aemu/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation {
   ];
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
   ];
 
diff --git a/pkgs/development/libraries/afflib/default.nix b/pkgs/development/libraries/afflib/default.nix
index e82c3c8dfe77..eff94a276cd8 100644
--- a/pkgs/development/libraries/afflib/default.nix
+++ b/pkgs/development/libraries/afflib/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook ];
   buildInputs = [ zlib curl expat openssl python3 ]
     ++ lib.optionals (with stdenv; isLinux || isDarwin) [ fuse ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   meta = {
     homepage = "http://afflib.sourceforge.net/";
diff --git a/pkgs/development/libraries/agg/default.nix b/pkgs/development/libraries/agg/default.nix
index bfa7449b04c6..020c2dce95d8 100644
--- a/pkgs/development/libraries/agg/default.nix
+++ b/pkgs/development/libraries/agg/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     freetype
     SDL
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libX11
   ];
 
@@ -33,9 +33,9 @@ stdenv.mkDerivation rec {
   '';
 
   configureFlags = [
-    (lib.strings.enableFeature stdenv.isLinux "platform")
+    (lib.strings.enableFeature stdenv.hostPlatform.isLinux "platform")
     "--enable-examples=no"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "--x-includes=${lib.getDev libX11}/include"
     "--x-libraries=${lib.getLib libX11}/lib"
   ];
diff --git a/pkgs/development/libraries/allegro/5.nix b/pkgs/development/libraries/allegro/5.nix
index 94dd96dae0e7..ee337673ee07 100644
--- a/pkgs/development/libraries/allegro/5.nix
+++ b/pkgs/development/libraries/allegro/5.nix
@@ -71,7 +71,7 @@ stdenv.mkDerivation rec {
     physfs
     texinfo
     zlib
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     libpthreadstubs
     libpulseaudio
diff --git a/pkgs/development/libraries/aml/default.nix b/pkgs/development/libraries/aml/default.nix
index 1a6900d298c6..19f3b2826223 100644
--- a/pkgs/development/libraries/aml/default.nix
+++ b/pkgs/development/libraries/aml/default.nix
@@ -19,6 +19,6 @@ stdenv.mkDerivation rec {
     license = licenses.isc;
     platforms = platforms.unix;
     maintainers = with maintainers; [ primeos ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/libraries/apr-util/default.nix b/pkgs/development/libraries/apr-util/default.nix
index 9490ff1fb6a3..ea7c9cf8c168 100644
--- a/pkgs/development/libraries/apr-util/default.nix
+++ b/pkgs/development/libraries/apr-util/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchurl, makeWrapper, apr, expat, gnused
 , sslSupport ? true, openssl
 , bdbSupport ? true, db
-, ldapSupport ? !stdenv.isCygwin, openldap
+, ldapSupport ? !stdenv.hostPlatform.isCygwin, openldap
 , libiconv, libxcrypt
 , cyrus_sasl, autoreconfHook
 }:
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     ./fix-libxcrypt-build.patch
     # Fix incorrect Berkeley DB detection with newer versions of clang due to implicit `int` on main errors.
     ./clang-bdb.patch
-  ] ++ lib.optional stdenv.isFreeBSD ./include-static-dependencies.patch;
+  ] ++ lib.optional stdenv.hostPlatform.isFreeBSD ./include-static-dependencies.patch;
 
   NIX_CFLAGS_LINK = [ "-lcrypt" ];
 
@@ -33,11 +33,11 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ makeWrapper autoreconfHook ];
 
   configureFlags = [ "--with-apr=${apr.dev}" "--with-expat=${expat.dev}" ]
-    ++ lib.optional (!stdenv.isCygwin) "--with-crypto"
+    ++ lib.optional (!stdenv.hostPlatform.isCygwin) "--with-crypto"
     ++ lib.optional sslSupport "--with-openssl=${openssl.dev}"
     ++ lib.optional bdbSupport "--with-berkeley-db=${db.dev}"
     ++ lib.optional ldapSupport "--with-ldap=ldap"
-    ++ lib.optionals stdenv.isCygwin
+    ++ lib.optionals stdenv.hostPlatform.isCygwin
       [ "--without-pgsql" "--without-sqlite2" "--without-sqlite3"
         "--without-freetds" "--without-berkeley-db" "--without-crypto" ]
     ;
@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional sslSupport openssl
     ++ lib.optional bdbSupport db
     ++ lib.optional ldapSupport openldap
-    ++ lib.optional stdenv.isFreeBSD cyrus_sasl;
+    ++ lib.optional stdenv.hostPlatform.isFreeBSD cyrus_sasl;
 
   postInstall = ''
     for f in $out/lib/*.la $out/lib/apr-util-1/*.la $dev/bin/apu-1-config; do
diff --git a/pkgs/development/libraries/aribb25/default.nix b/pkgs/development/libraries/aribb25/default.nix
index 743850c5fdc3..4079f6278235 100644
--- a/pkgs/development/libraries/aribb25/default.nix
+++ b/pkgs/development/libraries/aribb25/default.nix
@@ -26,8 +26,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     autoreconfHook
     pkg-config
-  ] ++ lib.optional stdenv.isDarwin xcbuild;
-  buildInputs = if stdenv.isDarwin then [ PCSC ] else [ pcsclite ];
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin xcbuild;
+  buildInputs = if stdenv.hostPlatform.isDarwin then [ PCSC ] else [ pcsclite ];
 
   patches = let
     url = commit: "https://code.videolan.org/videolan/${pname}/-/commit/${commit}.diff";
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
   ];
 
   buildFlags =
-    lib.optional stdenv.isDarwin "pcsclite_CFLAGS=-I${PCSC}/Library/Frameworks/PCSC.framework/Headers";
+    lib.optional stdenv.hostPlatform.isDarwin "pcsclite_CFLAGS=-I${PCSC}/Library/Frameworks/PCSC.framework/Headers";
 
   meta = with lib; {
     description = "Sample implementation of the ARIB STD-B25 standard";
diff --git a/pkgs/development/libraries/arrayfire/default.nix b/pkgs/development/libraries/arrayfire/default.nix
index 5ea144ef9bc3..eb928f99e88a 100644
--- a/pkgs/development/libraries/arrayfire/default.nix
+++ b/pkgs/development/libraries/arrayfire/default.nix
@@ -29,7 +29,7 @@
 , cpuSupport ? true
 , cudaSupport ? config.cudaSupport
   # OpenCL needs mesa which is broken on Darwin
-, openclSupport ? !stdenv.isDarwin
+, openclSupport ? !stdenv.hostPlatform.isDarwin
   # This argument lets one run CUDA & OpenCL tests on non-NixOS systems by
   # telling Nix where to find the drivers. If you know the version of the
   # Nvidia driver that is installed on your system, you can do:
diff --git a/pkgs/development/libraries/asio/generic.nix b/pkgs/development/libraries/asio/generic.nix
index cb9f1eb30246..44dd9e056874 100644
--- a/pkgs/development/libraries/asio/generic.nix
+++ b/pkgs/development/libraries/asio/generic.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
     homepage = "http://asio.sourceforge.net/";
     description = "Cross-platform C++ library for network and low-level I/O programming";
     license = licenses.boost;
-    broken = stdenv.isDarwin && lib.versionOlder version "1.16.1";
+    broken = stdenv.hostPlatform.isDarwin && lib.versionOlder version "1.16.1";
     platforms = platforms.unix;
   };
 }
diff --git a/pkgs/development/libraries/audio/cubeb/default.nix b/pkgs/development/libraries/audio/cubeb/default.nix
index dd7033b1910e..478e8478382a 100644
--- a/pkgs/development/libraries/audio/cubeb/default.nix
+++ b/pkgs/development/libraries/audio/cubeb/default.nix
@@ -9,10 +9,10 @@
 , AudioUnit
 , CoreAudio
 , CoreServices
-, lazyLoad ? !stdenv.isDarwin
+, lazyLoad ? !stdenv.hostPlatform.isDarwin
 }:
 
-assert lib.assertMsg (stdenv.isDarwin -> !lazyLoad) "cubeb: lazyLoad is inert on Darwin";
+assert lib.assertMsg (stdenv.hostPlatform.isDarwin -> !lazyLoad) "cubeb: lazyLoad is inert on Darwin";
 
 let
   backendLibs = [
@@ -39,7 +39,7 @@ in stdenv.mkDerivation {
   ];
 
   buildInputs = [ speexdsp ] ++ (
-    if stdenv.isDarwin then [ AudioUnit CoreAudio CoreServices ]
+    if stdenv.hostPlatform.isDarwin then [ AudioUnit CoreAudio CoreServices ]
     else backendLibs
   );
 
diff --git a/pkgs/development/libraries/audio/game-music-emu/default.nix b/pkgs/development/libraries/audio/game-music-emu/default.nix
index 94b8d1cbc375..050f47545438 100644
--- a/pkgs/development/libraries/audio/game-music-emu/default.nix
+++ b/pkgs/development/libraries/audio/game-music-emu/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   # it doesn't.
   disallowedReferences = [ stdenv.cc.cc ];
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     remove-references-to -t ${stdenv.cc.cc} "$(readlink -f $out/lib/libgme.so)"
   '';
 
diff --git a/pkgs/development/libraries/audio/libopenmpt/default.nix b/pkgs/development/libraries/audio/libopenmpt/default.nix
index a08b93a9b0e5..500533ce8203 100644
--- a/pkgs/development/libraries/audio/libopenmpt/default.nix
+++ b/pkgs/development/libraries/audio/libopenmpt/default.nix
@@ -10,7 +10,7 @@
 , portaudio
 , libsndfile
 , flac
-, usePulseAudio ? config.pulseaudio or stdenv.isLinux
+, usePulseAudio ? config.pulseaudio or stdenv.hostPlatform.isLinux
 , libpulseaudio
 }:
 
diff --git a/pkgs/development/libraries/audio/lv2/default.nix b/pkgs/development/libraries/audio/lv2/default.nix
index 8391c93cc594..c9ddffbff227 100644
--- a/pkgs/development/libraries/audio/lv2/default.nix
+++ b/pkgs/development/libraries/audio/lv2/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
     "-Dtests=disabled"
     # Avoid heavyweight python dependencies.
     "-Ddocs=disabled"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-Dlv2dir=${placeholder "out"}/lib/lv2"
   ];
 
diff --git a/pkgs/development/libraries/audio/suil/default.nix b/pkgs/development/libraries/audio/suil/default.nix
index 350adc8a4583..099c3ca42793 100644
--- a/pkgs/development/libraries/audio/suil/default.nix
+++ b/pkgs/development/libraries/audio/suil/default.nix
@@ -18,7 +18,7 @@
   gtk3,
   withQt5 ? true,
   qt5,
-  withX11 ? !stdenv.isDarwin,
+  withX11 ? !stdenv.hostPlatform.isDarwin,
 }:
 
 let
diff --git a/pkgs/development/libraries/audiofile/default.nix b/pkgs/development/libraries/audiofile/default.nix
index f9974e2ca253..3a65f2535b7c 100644
--- a/pkgs/development/libraries/audiofile/default.nix
+++ b/pkgs/development/libraries/audiofile/default.nix
@@ -15,9 +15,9 @@ stdenv.mkDerivation rec {
   version = "0.3.6";
 
   buildInputs =
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       alsa-lib
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreServices AudioUnit
     ];
 
diff --git a/pkgs/development/libraries/avahi/default.nix b/pkgs/development/libraries/avahi/default.nix
index 95f82d8def2b..3e9be1f5fc71 100644
--- a/pkgs/development/libraries/avahi/default.nix
+++ b/pkgs/development/libraries/avahi/default.nix
@@ -141,7 +141,7 @@ stdenv.mkDerivation rec {
     expat
     libiconv
     libevent
-  ] ++ lib.optionals stdenv.isFreeBSD [
+  ] ++ lib.optionals stdenv.hostPlatform.isFreeBSD [
     libpcap
   ] ++ lib.optionals gtk3Support [
     gtk3
@@ -171,7 +171,7 @@ stdenv.mkDerivation rec {
     "--with-systemdsystemunitdir=no"
   ] ++ lib.optionals withLibdnssdCompat [
     "--enable-compat-libdns_sd"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # autoipd won't build on darwin
     "--disable-autoipd"
   ];
@@ -183,7 +183,7 @@ stdenv.mkDerivation rec {
     "sysconfdir=${placeholder "out"}/etc"
   ];
 
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i '20 i\
     #define __APPLE_USE_RFC_2292' \
     avahi-core/socket.c
diff --git a/pkgs/development/libraries/aws-sdk-cpp/default.nix b/pkgs/development/libraries/aws-sdk-cpp/default.nix
index 631c5a90faf5..6e549526a14c 100644
--- a/pkgs/development/libraries/aws-sdk-cpp/default.nix
+++ b/pkgs/development/libraries/aws-sdk-cpp/default.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation rec {
     rm tests/aws-cpp-sdk-core-tests/aws/auth/AWSAuthSignerTest.cpp
     # TestRandomURLMultiThreaded fails
     rm tests/aws-cpp-sdk-core-tests/http/HttpClientTest.cpp
-  '' + lib.optionalString stdenv.isi686 ''
+  '' + lib.optionalString stdenv.hostPlatform.isi686 ''
     # EPSILON is exceeded
     rm tests/aws-cpp-sdk-core-tests/aws/client/AdaptiveRetryStrategyTest.cpp
   '';
@@ -71,7 +71,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     curl openssl zlib
-  ] ++ lib.optionals (stdenv.isDarwin &&
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin &&
                         ((builtins.elem "text-to-speech" apis) ||
                          (builtins.elem "*" apis)))
          [ CoreAudio AudioToolbox ];
diff --git a/pkgs/development/libraries/azmq/default.nix b/pkgs/development/libraries/azmq/default.nix
index 7317c51aabde..83bbd9f98f9e 100644
--- a/pkgs/development/libraries/azmq/default.nix
+++ b/pkgs/development/libraries/azmq/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation {
   ];
 
   # Broken for some reason on this platform.
-  doCheck = !(stdenv.isAarch64 && stdenv.isLinux);
+  doCheck = !(stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux);
 
   meta = with lib; {
     homepage = "https://github.com/zeromq/azmq";
diff --git a/pkgs/development/libraries/blitz/default.nix b/pkgs/development/libraries/blitz/default.nix
index d48669845485..4351e0ac729c 100644
--- a/pkgs/development/libraries/blitz/default.nix
+++ b/pkgs/development/libraries/blitz/default.nix
@@ -54,11 +54,11 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = optional enablePadding "-DARRAY_LENGTH_PADDING=ON"
     ++ optional enableSerialization "-DENABLE_SERIALISATION=ON"
-    ++ optional stdenv.is64bit "-DBZ_FULLY64BIT=ON";
+    ++ optional stdenv.hostPlatform.is64bit "-DBZ_FULLY64BIT=ON";
     # FIXME ++ optional doCheck "-DBUILD_TESTING=ON";
 
   # skip broken library name detection
-  ax_boost_user_serialization_lib = lib.optionalString stdenv.isDarwin "boost_serialization";
+  ax_boost_user_serialization_lib = lib.optionalString stdenv.hostPlatform.isDarwin "boost_serialization";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/blst/default.nix b/pkgs/development/libraries/blst/default.nix
index 2bf2e2c614e7..50d080b9bf91 100644
--- a/pkgs/development/libraries/blst/default.nix
+++ b/pkgs/development/libraries/blst/default.nix
@@ -59,9 +59,9 @@ stdenv.mkDerivation ( finalAttrs: {
 
   # ensure we have the right install id set.  Otherwise the library
   # wouldn't be found during install.  The alternative would be to work
-  # lib.optional stdenv.isDarwin "LDFLAGS=-Wl,-install_name,$(out)/lib/libblst.dylib";
+  # lib.optional stdenv.hostPlatform.isDarwin "LDFLAGS=-Wl,-install_name,$(out)/lib/libblst.dylib";
   # into the setup.sh
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id $out/lib/libblst.dylib $out/lib/libblst.dylib
   '';
 
diff --git a/pkgs/development/libraries/boost/generic.nix b/pkgs/development/libraries/boost/generic.nix
index 4362bdcb6dab..9c6fb3e67203 100644
--- a/pkgs/development/libraries/boost/generic.nix
+++ b/pkgs/development/libraries/boost/generic.nix
@@ -52,7 +52,7 @@ let
   # To avoid library name collisions
   layout = if taggedLayout then "tagged" else "system";
 
-  needUserConfig = stdenv.hostPlatform != stdenv.buildPlatform || useMpi || (stdenv.isDarwin && enableShared);
+  needUserConfig = stdenv.hostPlatform != stdenv.buildPlatform || useMpi || (stdenv.hostPlatform.isDarwin && enableShared);
 
   b2Args = lib.concatStringsSep " " ([
     "--includedir=$dev/include"
@@ -107,7 +107,7 @@ stdenv.mkDerivation {
   patchFlags = [];
 
   patches = patches
-  ++ lib.optional stdenv.isDarwin ./darwin-no-system-python.patch
+  ++ lib.optional stdenv.hostPlatform.isDarwin ./darwin-no-system-python.patch
   ++ [ ./cmake-paths-173.patch ]
   ++ lib.optional (version == "1.77.0") (fetchpatch {
     url = "https://github.com/boostorg/math/commit/7d482f6ebc356e6ec455ccb5f51a23971bf6ce5b.patch";
@@ -177,7 +177,7 @@ stdenv.mkDerivation {
   # On darwin we need to add the `$out/lib` to the libraries' rpath explicitly,
   # otherwise the dynamic linker is unable to resolve the reference to @rpath
   # when the boost libraries want to load each other at runtime.
-  + lib.optionalString (stdenv.isDarwin && enableShared) ''
+  + lib.optionalString (stdenv.hostPlatform.isDarwin && enableShared) ''
     cat << EOF >> user-config.jam
     using clang-darwin : : ${stdenv.cc.targetPrefix}c++
       : <linkflags>"-rpath $out/lib/"
@@ -214,7 +214,7 @@ stdenv.mkDerivation {
   '';
 
   env = {
-    NIX_CFLAGS_LINK = lib.optionalString stdenv.isDarwin "-headerpad_max_install_names";
+    NIX_CFLAGS_LINK = lib.optionalString stdenv.hostPlatform.isDarwin "-headerpad_max_install_names";
     # copyPkgconfigItems will substitute these in the pkg-config file
     includedir = "${placeholder "dev"}/include";
     libdir = "${placeholder "out"}/lib";
diff --git a/pkgs/development/libraries/boringssl/default.nix b/pkgs/development/libraries/boringssl/default.nix
index 9bb0967bd5c6..01c3884c428f 100644
--- a/pkgs/development/libraries/boringssl/default.nix
+++ b/pkgs/development/libraries/boringssl/default.nix
@@ -41,7 +41,7 @@ buildGoModule {
   '';
 
   # CMAKE_OSX_ARCHITECTURES is set to x86_64 by Nix, but it confuses boringssl on aarch64-linux.
-  cmakeFlags = [ "-GNinja" ] ++ lib.optionals (stdenv.isLinux) [ "-DCMAKE_OSX_ARCHITECTURES=" ];
+  cmakeFlags = [ "-GNinja" ] ++ lib.optionals (stdenv.hostPlatform.isLinux) [ "-DCMAKE_OSX_ARCHITECTURES=" ];
 
   installPhase = ''
     mkdir -p $bin/bin $dev $out/lib
diff --git a/pkgs/development/libraries/botan/default.nix b/pkgs/development/libraries/botan/default.nix
index 81c38c2d982b..976144b1b5ca 100644
--- a/pkgs/development/libraries/botan/default.nix
+++ b/pkgs/development/libraries/botan/default.nix
@@ -50,7 +50,7 @@ let
           bzip2
           zlib
         ]
-        ++ lib.optionals stdenv.isDarwin (
+        ++ lib.optionals stdenv.hostPlatform.isDarwin (
           with darwin.apple_sdk.frameworks;
           [
             CoreServices
diff --git a/pkgs/development/libraries/box2d/default.nix b/pkgs/development/libraries/box2d/default.nix
index a445a0c53315..acc2d96caf4a 100644
--- a/pkgs/development/libraries/box2d/default.nix
+++ b/pkgs/development/libraries/box2d/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation (finalAttrs: {
     libXrandr
     xorgproto
     libXi
-  ] ++ optionals stdenv.isDarwin [
+  ] ++ optionals stdenv.hostPlatform.isDarwin [
     Carbon Cocoa Kernel OpenGL
   ];
 
diff --git a/pkgs/development/libraries/brunsli/default.nix b/pkgs/development/libraries/brunsli/default.nix
index 03c9b02f7f9f..e9d379a74d31 100644
--- a/pkgs/development/libraries/brunsli/default.nix
+++ b/pkgs/development/libraries/brunsli/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     rm -r third_party
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     rm -r build
   '';
 
diff --git a/pkgs/development/libraries/bullet/default.nix b/pkgs/development/libraries/bullet/default.nix
index 5ba9186dcac9..4a161423c7d3 100644
--- a/pkgs/development/libraries/bullet/default.nix
+++ b/pkgs/development/libraries/bullet/default.nix
@@ -21,13 +21,13 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = lib.optionals stdenv.isLinux [ libGLU libGL libglut ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa OpenGL ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libGLU libGL libglut ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa OpenGL ];
 
   postPatch = ''
     substituteInPlace examples/ThirdPartyLibs/Gwen/CMakeLists.txt \
       --replace "-DGLEW_STATIC" "-DGLEW_STATIC -Wno-narrowing"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i 's/FIND_PACKAGE(OpenGL)//' CMakeLists.txt
     sed -i 's/FIND_LIBRARY(COCOA_LIBRARY Cocoa)//' CMakeLists.txt
   '';
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     "-DBUILD_SHARED_LIBS=ON"
     "-DBUILD_CPU_DEMOS=OFF"
     "-DINSTALL_EXTRA_LIBS=ON"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DOPENGL_FOUND=true"
     "-DOPENGL_LIBRARIES=${OpenGL}/Library/Frameworks/OpenGL.framework"
     "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks/OpenGL.framework"
diff --git a/pkgs/development/libraries/bullet/roboschool-fork.nix b/pkgs/development/libraries/bullet/roboschool-fork.nix
index c5f6f3a436d2..bcc963f5b466 100644
--- a/pkgs/development/libraries/bullet/roboschool-fork.nix
+++ b/pkgs/development/libraries/bullet/roboschool-fork.nix
@@ -18,12 +18,12 @@ stdenv.mkDerivation {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = lib.optionals stdenv.isLinux [ libGLU libGL libglut ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa OpenGL ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libGLU libGL libglut ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa OpenGL ];
 
   patches = [ ./gwen-narrowing.patch ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i 's/FIND_PACKAGE(OpenGL)//' CMakeLists.txt
     sed -i 's/FIND_LIBRARY(COCOA_LIBRARY Cocoa)//' CMakeLists.txt
   '';
@@ -32,7 +32,7 @@ stdenv.mkDerivation {
     "-DBUILD_SHARED_LIBS=ON"
     "-DBUILD_CPU_DEMOS=OFF"
     "-DINSTALL_EXTRA_LIBS=ON"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DOPENGL_FOUND=true"
     "-DOPENGL_LIBRARIES=${OpenGL}/Library/Frameworks/OpenGL.framework"
     "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks/OpenGL.framework"
@@ -53,6 +53,6 @@ stdenv.mkDerivation {
     platforms = platforms.unix;
     # /tmp/nix-build-bullet-2019-03-27.drv-0/source/src/Bullet3Common/b3Vector3.h:297:7: error: argument value 10880 is outside the valid range [0, 255] [-Wargument-outside-range]
     #                 y = b3_splat_ps(y, 0x80);
-    broken = (stdenv.isDarwin && stdenv.isx86_64);
+    broken = (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64);
   };
 }
diff --git a/pkgs/development/libraries/caf/default.nix b/pkgs/development/libraries/caf/default.nix
index 854032d56157..9180457a3165 100644
--- a/pkgs/development/libraries/caf/default.nix
+++ b/pkgs/development/libraries/caf/default.nix
@@ -19,9 +19,9 @@ stdenv.mkDerivation rec {
     "-DCAF_ENABLE_EXAMPLES:BOOL=OFF"
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-faligned-allocation";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-faligned-allocation";
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   checkTarget = "test";
 
   meta = with lib; {
diff --git a/pkgs/development/libraries/cairo/default.nix b/pkgs/development/libraries/cairo/default.nix
index 28809ade8ae4..4368965d4f18 100644
--- a/pkgs/development/libraries/cairo/default.nix
+++ b/pkgs/development/libraries/cairo/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, fetchurl, gtk-doc, meson, ninja, pkg-config, python3
 , docbook_xsl, fontconfig, freetype, libpng, pixman, zlib
-, x11Support? !stdenv.isDarwin || true, libXext, libXrender
+, x11Support? !stdenv.hostPlatform.isDarwin || true, libXext, libXrender
 , gobjectSupport ? true, glib
 , xcbSupport ? x11Support, libxcb
 , darwin
@@ -34,7 +34,7 @@ in {
 
   buildInputs = [
     docbook_xsl
-  ] ++ optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     CoreGraphics
     CoreText
     ApplicationServices
@@ -87,7 +87,7 @@ in {
     # `-I' flags to be propagated.
     sed -i "$out/lib/pkgconfig/cairo.pc" \
         -es'|^Cflags:\(.*\)$|Cflags: \1 -I${freetype.dev}/include/freetype2 -I${freetype.dev}/include|g'
-  '' + lib.optionalString stdenv.isDarwin glib.flattenInclude;
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin glib.flattenInclude;
 
   passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
 
diff --git a/pkgs/development/libraries/cairomm/1.16.nix b/pkgs/development/libraries/cairomm/1.16.nix
index 83428f0fef9b..cd561d009187 100644
--- a/pkgs/development/libraries/cairomm/1.16.nix
+++ b/pkgs/development/libraries/cairomm/1.16.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     boost # for tests
     fontconfig
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ApplicationServices
   ];
 
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
   ];
 
   # Tests fail on Darwin, possibly because of sandboxing.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "C++ bindings for the Cairo vector graphics library";
diff --git a/pkgs/development/libraries/cairomm/default.nix b/pkgs/development/libraries/cairomm/default.nix
index 957cfa26ac73..382770e144f5 100644
--- a/pkgs/development/libraries/cairomm/default.nix
+++ b/pkgs/development/libraries/cairomm/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     boost # for tests
     fontconfig
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     ApplicationServices
   ]);
 
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
     "-Dbuild-tests=true"
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "C++ bindings for the Cairo vector graphics library";
diff --git a/pkgs/development/libraries/capstone/4.nix b/pkgs/development/libraries/capstone/4.nix
index dd31e9feaf62..836bb47568c3 100644
--- a/pkgs/development/libraries/capstone/4.nix
+++ b/pkgs/development/libraries/capstone/4.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     cmake
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
 
diff --git a/pkgs/development/libraries/capstone/default.nix b/pkgs/development/libraries/capstone/default.nix
index b78b007bc597..1aed26cec87d 100644
--- a/pkgs/development/libraries/capstone/default.nix
+++ b/pkgs/development/libraries/capstone/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     cmake
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
 
diff --git a/pkgs/development/libraries/catboost/default.nix b/pkgs/development/libraries/catboost/default.nix
index 3824cf046b95..ca0d22ff002c 100644
--- a/pkgs/development/libraries/catboost/default.nix
+++ b/pkgs/development/libraries/catboost/default.nix
@@ -68,7 +68,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ] ++ lib.optionals cudaSupport (with cudaPackages; [
     cuda_cudart
@@ -81,7 +81,7 @@ stdenv.mkDerivation (finalAttrs: {
     # after bumping the default version of llvm, check for compatibility with the cuda backend and pin it.
     # see https://catboost.ai/en/docs/installation/build-environment-setup-for-cmake#compilers,-linkers-and-related-tools
     CUDAHOSTCXX = lib.optionalString cudaSupport "${llvmPackages_12.stdenv.cc}/bin/cc";
-    NIX_CFLAGS_LINK = lib.optionalString stdenv.isLinux "-fuse-ld=lld";
+    NIX_CFLAGS_LINK = lib.optionalString stdenv.hostPlatform.isLinux "-fuse-ld=lld";
     NIX_LDFLAGS = "-lc -lm";
   };
 
diff --git a/pkgs/development/libraries/catch2/3.nix b/pkgs/development/libraries/catch2/3.nix
index 5985ec519ae4..c7d2296d9629 100644
--- a/pkgs/development/libraries/catch2/3.nix
+++ b/pkgs/development/libraries/catch2/3.nix
@@ -25,13 +25,13 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-DCATCH_DEVELOPMENT_BUILD=ON"
     "-DCATCH_BUILD_TESTING=${if doCheck then "ON" else "OFF"}"
-  ] ++ lib.optionals (stdenv.isDarwin && doCheck) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && doCheck) [
     # test has a faulty path normalization technique that won't work in
     # our darwin build environment https://github.com/catchorg/Catch2/issues/1691
     "-DCMAKE_CTEST_ARGUMENTS=-E;ApprovalTests"
   ];
 
-  env = lib.optionalAttrs stdenv.isx86_32 {
+  env = lib.optionalAttrs stdenv.hostPlatform.isx86_32 {
     # Tests fail on x86_32 if compiled with x87 floats: https://github.com/catchorg/Catch2/issues/2796
     NIX_CFLAGS_COMPILE = "-msse2 -mfpmath=sse";
   } // lib.optionalAttrs (stdenv.hostPlatform.isRiscV || stdenv.hostPlatform.isAarch32) {
diff --git a/pkgs/development/libraries/cctag/default.nix b/pkgs/development/libraries/cctag/default.nix
index 238821b6af91..8b37633acfcb 100644
--- a/pkgs/development/libraries/cctag/default.nix
+++ b/pkgs/development/libraries/cctag/default.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
   ];
 
   # Tests are broken on Darwin (linking issue)
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Detection of CCTag markers made up of concentric circles";
diff --git a/pkgs/development/libraries/cctz/default.nix b/pkgs/development/libraries/cctz/default.nix
index c0f8a58a18d9..4ad0bf6b8034 100644
--- a/pkgs/development/libraries/cctz/default.nix
+++ b/pkgs/development/libraries/cctz/default.nix
@@ -13,13 +13,13 @@ stdenv.mkDerivation rec {
 
   makeFlags = [ "PREFIX=$(out)" ];
 
-  buildInputs = lib.optional stdenv.isDarwin Foundation;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Foundation;
 
   installTargets = [ "install_hdrs" ]
     ++ lib.optional (!stdenv.hostPlatform.isStatic) "install_shared_lib"
     ++ lib.optional stdenv.hostPlatform.isStatic "install_lib";
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id $out/lib/libcctz.so $out/lib/libcctz.so
   '';
 
diff --git a/pkgs/development/libraries/cdo/default.nix b/pkgs/development/libraries/cdo/default.nix
index 3de126d111ef..3c63b23d1ce2 100644
--- a/pkgs/development/libraries/cdo/default.nix
+++ b/pkgs/development/libraries/cdo/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   # evaluates to 0 [-Werror,-Wundef-prefix=TARGET_OS_]
   # we don't want to appear to be a catalyst build;
   # we are a TARGET_OS_MAC
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-DTARGET_OS_MACCATALYST=0";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-DTARGET_OS_MACCATALYST=0";
 
   meta = with lib; {
     description = "Collection of command line Operators to manipulate and analyse Climate and NWP model Data";
diff --git a/pkgs/development/libraries/cegui/default.nix b/pkgs/development/libraries/cegui/default.nix
index af52aabca79b..e92ddafc4322 100644
--- a/pkgs/development/libraries/cegui/default.nix
+++ b/pkgs/development/libraries/cegui/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation {
     freetype
     boost
     expat
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
     darwin.apple_sdk.frameworks.Foundation
     libiconv
diff --git a/pkgs/development/libraries/check/default.nix b/pkgs/development/libraries/check/default.nix
index 14b4e549264b..10030f5653c2 100644
--- a/pkgs/development/libraries/check/default.nix
+++ b/pkgs/development/libraries/check/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   # Test can randomly fail: https://hydra.nixos.org/build/7243912
   doCheck = false;
 
-  buildInputs = lib.optional stdenv.isDarwin CoreServices;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin CoreServices;
 
   meta = with lib; {
     description = "Unit testing framework for C";
diff --git a/pkgs/development/libraries/chromaprint/default.nix b/pkgs/development/libraries/chromaprint/default.nix
index 934a4b04a96b..e264693ceab8 100644
--- a/pkgs/development/libraries/chromaprint/default.nix
+++ b/pkgs/development/libraries/chromaprint/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ninja ];
 
-  buildInputs = [ ffmpeg_7 ] ++ lib.optionals stdenv.isDarwin
+  buildInputs = [ ffmpeg_7 ] ++ lib.optionals stdenv.hostPlatform.isDarwin
     (with darwin.apple_sdk.frameworks; [ Accelerate CoreGraphics CoreVideo zlib ]);
 
   cmakeFlags = [ "-DBUILD_EXAMPLES=ON" "-DBUILD_TOOLS=ON" ];
diff --git a/pkgs/development/libraries/classads/default.nix b/pkgs/development/libraries/classads/default.nix
index bbe342d98198..0442c7d21209 100644
--- a/pkgs/development/libraries/classads/default.nix
+++ b/pkgs/development/libraries/classads/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   ];
 
   # error: use of undeclared identifier 'finite'; did you mean 'isfinite'?
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dfinite=isfinite";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) "-Dfinite=isfinite";
 
   meta = {
     homepage = "http://www.cs.wisc.edu/condor/classad/";
diff --git a/pkgs/development/libraries/clfft/default.nix b/pkgs/development/libraries/clfft/default.nix
index 824449b0fafc..5843c1b1fcca 100644
--- a/pkgs/development/libraries/clfft/default.nix
+++ b/pkgs/development/libraries/clfft/default.nix
@@ -23,8 +23,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
 
   buildInputs = [ fftw fftwFloat boost ]
-    ++ lib.optionals stdenv.isLinux [ opencl-clhpp ocl-icd ]
-    ++ lib.optionals stdenv.isDarwin [ OpenCL ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ opencl-clhpp ocl-icd ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ OpenCL ];
 
   # https://github.com/clMathLibraries/clFFT/issues/237
   CXXFLAGS = "-std=c++98";
diff --git a/pkgs/development/libraries/clucene-core/2.x.nix b/pkgs/development/libraries/clucene-core/2.x.nix
index d6049d284513..6fc4ac289677 100644
--- a/pkgs/development/libraries/clucene-core/2.x.nix
+++ b/pkgs/development/libraries/clucene-core/2.x.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
 
     # required for darwin and linux-musl
     ./pthread-include.patch
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ./fix-darwin.patch
 
     # see https://bugs.gentoo.org/869170
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
   ];
 
   # see https://github.com/macports/macports-ports/commit/236d43f2450c6be52dc42fd3a2bbabbaa5136201
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/shared/CMakeLists.txt --replace 'fstati64;_fstati64;fstat64;fstat;_fstat' 'fstat;_fstat'
     substituteInPlace src/shared/CMakeLists.txt --replace 'stati64;_stati64;stat64;stat;_stat' 'stat;_stat'
   '';
diff --git a/pkgs/development/libraries/clutter/default.nix b/pkgs/development/libraries/clutter/default.nix
index d6720eb181f4..bb7ddf08957f 100644
--- a/pkgs/development/libraries/clutter/default.nix
+++ b/pkgs/development/libraries/clutter/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     atk
     json-glib
     gobject-introspection
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libX11
     libGL
     libGLU
@@ -62,7 +62,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [
     "--enable-introspection" # needed by muffin AFAIK
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--without-x"
     "--enable-x11-backend=no"
     "--enable-quartz-backend=yes"
diff --git a/pkgs/development/libraries/cmark/default.nix b/pkgs/development/libraries/cmark/default.nix
index a118ecf1adda..83407c64384d 100644
--- a/pkgs/development/libraries/cmark/default.nix
+++ b/pkgs/development/libraries/cmark/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   preCheck = let
-    lib_path = if stdenv.isDarwin then "DYLD_FALLBACK_LIBRARY_PATH" else "LD_LIBRARY_PATH";
+    lib_path = if stdenv.hostPlatform.isDarwin then "DYLD_FALLBACK_LIBRARY_PATH" else "LD_LIBRARY_PATH";
   in ''
     export ${lib_path}=$(readlink -f ./src)
   '';
diff --git a/pkgs/development/libraries/cminpack/default.nix b/pkgs/development/libraries/cminpack/default.nix
index 20782c8499cb..81224c0fdaa3 100644
--- a/pkgs/development/libraries/cminpack/default.nix
+++ b/pkgs/development/libraries/cminpack/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = lib.optionals withBlas [
     blas
-  ] ++ lib.optionals (withBlas && stdenv.isDarwin) [
+  ] ++ lib.optionals (withBlas && stdenv.hostPlatform.isDarwin) [
     darwin.apple_sdk.frameworks.Accelerate
     darwin.apple_sdk.frameworks.CoreGraphics
     darwin.apple_sdk.frameworks.CoreVideo
diff --git a/pkgs/development/libraries/cmrt/default.nix b/pkgs/development/libraries/cmrt/default.nix
index 87c692b42cea..2e3fc7a3a198 100644
--- a/pkgs/development/libraries/cmrt/default.nix
+++ b/pkgs/development/libraries/cmrt/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libdrm libva ];
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     homepage = "https://01.org/linuxmedia";
     description = "Intel C for Media Runtime";
     longDescription = "Media GPU kernel manager for Intel G45 & HD Graphics family";
diff --git a/pkgs/development/libraries/cogl/default.nix b/pkgs/development/libraries/cogl/default.nix
index b233113e951f..db34dc1669b1 100644
--- a/pkgs/development/libraries/cogl/default.nix
+++ b/pkgs/development/libraries/cogl/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [
     "--enable-introspection"
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     "--enable-kms-egl-platform"
     "--enable-wayland-egl-platform"
     "--enable-wayland-egl-server"
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
     # Force linking against libGL.
     # Otherwise, it tries to load it from the runtime library path.
     "LIBS=-lGL"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--disable-glx"
     "--without-x"
   ] ++ lib.optionals gstreamerSupport [
@@ -68,7 +68,7 @@ stdenv.mkDerivation rec {
     glib
     gdk-pixbuf
     gobject-introspection
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     wayland
     mesa
     libGL
@@ -82,10 +82,10 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = lib.optionals pangoSupport [ pango cairo harfbuzz ]
-    ++ lib.optionals stdenv.isDarwin [ OpenGL ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ OpenGL ];
 
   env = {
-    COGL_PANGO_DEP_CFLAGS = toString (lib.optionals (stdenv.isDarwin && pangoSupport) [
+    COGL_PANGO_DEP_CFLAGS = toString (lib.optionals (stdenv.hostPlatform.isDarwin && pangoSupport) [
       "-I${pango.dev}/include/pango-1.0"
       "-I${cairo.dev}/include/cairo"
       "-I${harfbuzz.dev}/include/harfbuzz"
diff --git a/pkgs/development/libraries/coin3d/default.nix b/pkgs/development/libraries/coin3d/default.nix
index 3261a848e3a6..a0d1ae07d636 100644
--- a/pkgs/development/libraries/coin3d/default.nix
+++ b/pkgs/development/libraries/coin3d/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation (finalAttrs: {
     boost
     libGL
     libGLU
-  ] ++ lib.optional stdenv.isLinux libX11;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux libX11;
 
   cmakeFlags = [ "-DCOIN_USE_CPACK=OFF" ];
 
diff --git a/pkgs/development/libraries/cpp-utilities/default.nix b/pkgs/development/libraries/cpp-utilities/default.nix
index d2fbecf8e61b..1d838b0ba2a2 100644
--- a/pkgs/development/libraries/cpp-utilities/default.nix
+++ b/pkgs/development/libraries/cpp-utilities/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ cmake ];
   nativeCheckInputs = [ cppunit ];
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv # needed on Darwin, see https://github.com/Martchus/cpp-utilities/issues/4
   ];
 
@@ -32,7 +32,7 @@ stdenv.mkDerivation (finalAttrs: {
     )
   '';
   # tests fail on Darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     homepage = "https://github.com/Martchus/cpp-utilities";
diff --git a/pkgs/development/libraries/cracklib/default.nix b/pkgs/development/libraries/cracklib/default.nix
index 2ccb2988305e..bc69141bb988 100644
--- a/pkgs/development/libraries/cracklib/default.nix
+++ b/pkgs/development/libraries/cracklib/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-cAw5YMplCx6vAhfWmskZuBHyB1o4dGd7hMceOG3V51Y=";
   };
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     # Fixes build failure on Darwin due to missing byte order functions.
     # https://github.com/cracklib/cracklib/pull/96
     (fetchpatch2 {
diff --git a/pkgs/development/libraries/crc32c/default.nix b/pkgs/development/libraries/crc32c/default.nix
index 3b27601bcbfd..07da71e32670 100644
--- a/pkgs/development/libraries/crc32c/default.nix
+++ b/pkgs/development/libraries/crc32c/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
   buildInputs = [ gflags ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isAarch64 "-march=armv8-a+crc";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isAarch64 "-march=armv8-a+crc";
 
   cmakeFlags = [
     "-DCRC32C_INSTALL=1"
diff --git a/pkgs/development/libraries/crossguid/default.nix b/pkgs/development/libraries/crossguid/default.nix
index c4c015d92481..cd8f95957c4e 100644
--- a/pkgs/development/libraries/crossguid/default.nix
+++ b/pkgs/development/libraries/crossguid/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = lib.optional stdenv.isLinux libuuid;
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux libuuid;
 
   passthru.updateScript = unstableGitUpdater {
     tagPrefix = "v";
diff --git a/pkgs/development/libraries/ctranslate2/default.nix b/pkgs/development/libraries/ctranslate2/default.nix
index 4668404f9794..b126cff5b24a 100644
--- a/pkgs/development/libraries/ctranslate2/default.nix
+++ b/pkgs/development/libraries/ctranslate2/default.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     "-DWITH_RUY=${cmakeBool withRuy}"
     "-DWITH_MKL=${cmakeBool withMkl}"
   ]
-  ++ lib.optional stdenv.isDarwin "-DWITH_ACCELERATE=ON";
+  ++ lib.optional stdenv.hostPlatform.isDarwin "-DWITH_ACCELERATE=ON";
 
   buildInputs = lib.optionals withMkl [
     mkl
@@ -67,10 +67,10 @@ stdenv.mkDerivation rec {
     oneDNN
   ] ++ lib.optionals withOpenblas [
     openblas
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     llvmPackages.openmp
     darwin.apple_sdk.frameworks.Accelerate
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     darwin.apple_sdk.frameworks.CoreGraphics
     darwin.apple_sdk.frameworks.CoreVideo
   ];
diff --git a/pkgs/development/libraries/cyrus-sasl/default.nix b/pkgs/development/libraries/cyrus-sasl/default.nix
index 0b151bfc719a..60a0d8569a13 100644
--- a/pkgs/development/libraries/cyrus-sasl/default.nix
+++ b/pkgs/development/libraries/cyrus-sasl/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   buildInputs =
     [ openssl db gettext libkrb5 libxcrypt ]
     ++ lib.optional enableLdap openldap
-    ++ lib.optional stdenv.isLinux pam;
+    ++ lib.optional stdenv.hostPlatform.isLinux pam;
 
   configureFlags = [
     "--with-openssl=${openssl.dev}"
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
       "CFLAGS=-DTIME_WITH_SYS_TIME"
     ];
 
-  installFlags = lib.optionals stdenv.isDarwin [ "framedir=$(out)/Library/Frameworks/SASL2.framework" ];
+  installFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "framedir=$(out)/Library/Frameworks/SASL2.framework" ];
 
   passthru.tests = {
     inherit (nixosTests) parsedmarc postfix;
diff --git a/pkgs/development/libraries/db/generic.nix b/pkgs/development/libraries/db/generic.nix
index d715c1ffc8b1..936aed633a44 100644
--- a/pkgs/development/libraries/db/generic.nix
+++ b/pkgs/development/libraries/db/generic.nix
@@ -67,7 +67,7 @@ stdenv.mkDerivation (rec {
       (if compat185 then "--enable-compat185" else "--disable-compat185")
     ]
     ++ lib.optional dbmSupport "--enable-dbm"
-    ++ lib.optional stdenv.isFreeBSD "--with-pic";
+    ++ lib.optional stdenv.hostPlatform.isFreeBSD "--with-pic";
 
   preConfigure = ''
     cd build_unix
diff --git a/pkgs/development/libraries/dbus/default.nix b/pkgs/development/libraries/dbus/default.nix
index cb5fe9e4fbd3..017c83c5b11d 100644
--- a/pkgs/development/libraries/dbus/default.nix
+++ b/pkgs/development/libraries/dbus/default.nix
@@ -13,7 +13,7 @@
 , xmlto
 , autoreconfHook
 , autoconf-archive
-, x11Support ? (stdenv.isLinux || stdenv.isDarwin)
+, x11Support ? (stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isDarwin)
 , xorg
 }:
 
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-uh8h0r2dM52i1KqHgMCd8y/qh5mLc9ok9Jq53x42pQ8=";
   };
 
-  patches = lib.optional stdenv.isSunOS ./implement-getgrouplist.patch;
+  patches = lib.optional stdenv.hostPlatform.isSunOS ./implement-getgrouplist.patch;
 
   postPatch = ''
     substituteInPlace bus/Makefile.am \
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
       libICE
       libSM
     ]) ++ lib.optional enableSystemd systemdMinimal
-    ++ lib.optionals stdenv.isLinux [ audit libapparmor ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ audit libapparmor ];
   # ToDo: optional selinux?
 
   __darwinAllowLocalNetworking = true;
@@ -84,10 +84,10 @@ stdenv.mkDerivation rec {
     "--with-systemdsystemunitdir=${placeholder "out"}/etc/systemd/system"
     "--with-systemduserunitdir=${placeholder "out"}/etc/systemd/user"
   ] ++ lib.optional (!x11Support) "--without-x"
-  ++ lib.optionals stdenv.isLinux [ "--enable-apparmor" "--enable-libaudit" ]
+  ++ lib.optionals stdenv.hostPlatform.isLinux [ "--enable-apparmor" "--enable-libaudit" ]
   ++ lib.optionals enableSystemd [ "SYSTEMCTL=${systemdMinimal}/bin/systemctl" ];
 
-  NIX_CFLAGS_LINK = lib.optionalString (!stdenv.isDarwin) "-Wl,--as-needed";
+  NIX_CFLAGS_LINK = lib.optionalString (!stdenv.hostPlatform.isDarwin) "-Wl,--as-needed";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/dclxvi/default.nix b/pkgs/development/libraries/dclxvi/default.nix
index ac2664a1c9f9..34340a406a50 100644
--- a/pkgs/development/libraries/dclxvi/default.nix
+++ b/pkgs/development/libraries/dclxvi/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation {
   patchPhase = ''
     substituteInPlace Makefile \
       --replace "gcc" "cc"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile \
       --replace "-soname=libdclxvipairing.so" "-install_name,libdclxvipairing.so"
   '';
diff --git a/pkgs/development/libraries/dconf/default.nix b/pkgs/development/libraries/dconf/default.nix
index 0dddcb5d6482..1aad769c6db2 100644
--- a/pkgs/development/libraries/dconf/default.nix
+++ b/pkgs/development/libraries/dconf/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
     dbus # for dbus-daemon
   ];
 
-  doCheck = !stdenv.isAarch32 && !stdenv.isAarch64 && !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isAarch32 && !stdenv.hostPlatform.isAarch64 && !stdenv.hostPlatform.isDarwin;
 
   postPatch = ''
     chmod +x meson_post_install.py tests/test-dconf.py
diff --git a/pkgs/development/libraries/discord-rpc/default.nix b/pkgs/development/libraries/discord-rpc/default.nix
index f0c60e9506d5..05837c823c56 100644
--- a/pkgs/development/libraries/discord-rpc/default.nix
+++ b/pkgs/development/libraries/discord-rpc/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     rapidjson
-  ] ++ lib.optional stdenv.isDarwin AppKit;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin AppKit;
 
   cmakeFlags = [
     "-DBUILD_SHARED_LIBS=true"
diff --git a/pkgs/development/libraries/double-conversion/default.nix b/pkgs/development/libraries/double-conversion/default.nix
index 212b854c1e33..857bb48c1154 100644
--- a/pkgs/development/libraries/double-conversion/default.nix
+++ b/pkgs/development/libraries/double-conversion/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = lib.optional (! enableStatic) "-DBUILD_SHARED_LIBS=ON";
 
   # Case sensitivity issue
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     rm BUILD
   '';
 
diff --git a/pkgs/development/libraries/duckdb/default.nix b/pkgs/development/libraries/duckdb/default.nix
index c222b117fff9..ea7b2535f329 100644
--- a/pkgs/development/libraries/duckdb/default.nix
+++ b/pkgs/development/libraries/duckdb/default.nix
@@ -98,12 +98,12 @@ stdenv.mkDerivation (finalAttrs: {
         # wants http connection
         "test/sql/copy/csv/recursive_query_csv.test"
         "test/sql/copy/csv/test_mixed_lines.test"
-      ] ++ lib.optionals stdenv.isAarch64 [
+      ] ++ lib.optionals stdenv.hostPlatform.isAarch64 [
         "test/sql/aggregate/aggregates/test_kurtosis.test"
         "test/sql/aggregate/aggregates/test_skewness.test"
         "test/sql/function/list/aggregates/skewness.test"
       ]);
-      LD_LIBRARY_PATH = lib.optionalString stdenv.isDarwin "DY" + "LD_LIBRARY_PATH";
+      LD_LIBRARY_PATH = lib.optionalString stdenv.hostPlatform.isDarwin "DY" + "LD_LIBRARY_PATH";
     in
     ''
       runHook preInstallCheck
diff --git a/pkgs/development/libraries/easyloggingpp/default.nix b/pkgs/development/libraries/easyloggingpp/default.nix
index 0923d2b450bc..a3b891253bf4 100644
--- a/pkgs/development/libraries/easyloggingpp/default.nix
+++ b/pkgs/development/libraries/easyloggingpp/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   buildInputs = [gtest];
   cmakeFlags = [ "-Dtest=ON" ];
   env.NIX_CFLAGS_COMPILE = "-std=c++14" +
-    lib.optionalString stdenv.isLinux " -pthread";
+    lib.optionalString stdenv.hostPlatform.isLinux " -pthread";
   postInstall = ''
     mkdir -p $out/include
     cp ../src/easylogging++.cc $out/include
diff --git a/pkgs/development/libraries/edencommon/default.nix b/pkgs/development/libraries/edencommon/default.nix
index fa10344826af..ce26bc6f7125 100644
--- a/pkgs/development/libraries/edencommon/default.nix
+++ b/pkgs/development/libraries/edencommon/default.nix
@@ -20,14 +20,14 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-1z4QicS98juv4bUEbHBkCjVJHEhnoJyLYp4zMHmDbMg=";
   };
 
-  patches = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  patches = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     # Test discovery timeout is bizarrely flaky on `x86_64-darwin`
     ./increase-test-discovery-timeout.patch
   ];
 
   nativeBuildInputs = [ cmake ];
 
-  cmakeFlags = lib.optionals stdenv.isDarwin [
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.14" # For aligned allocation
   ];
 
diff --git a/pkgs/development/libraries/embree/default.nix b/pkgs/development/libraries/embree/default.nix
index b53be3ae7cf5..f45ea3dc7d3d 100644
--- a/pkgs/development/libraries/embree/default.nix
+++ b/pkgs/development/libraries/embree/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ ispc pkg-config cmake ];
   buildInputs = [ tbb glfw openimageio libjpeg libpng libX11 libpthreadstubs ]
-                ++ lib.optionals stdenv.isDarwin [ glib ];
+                ++ lib.optionals stdenv.hostPlatform.isDarwin [ glib ];
 
   meta = with lib; {
     description = "High performance ray tracing kernels from Intel";
diff --git a/pkgs/development/libraries/enchant/2.x.nix b/pkgs/development/libraries/enchant/2.x.nix
index 69cab2ca5b61..dbd7cefacb67 100644
--- a/pkgs/development/libraries/enchant/2.x.nix
+++ b/pkgs/development/libraries/enchant/2.x.nix
@@ -14,12 +14,12 @@
 , withAspell ? true
 , withHunspell ? true
 , withNuspell ? true
-, withAppleSpell ? stdenv.isDarwin
+, withAppleSpell ? stdenv.hostPlatform.isDarwin
 
 , Cocoa
 }:
 
-assert withAppleSpell -> stdenv.isDarwin;
+assert withAppleSpell -> stdenv.hostPlatform.isDarwin;
 
 stdenv.mkDerivation rec {
   pname = "enchant";
diff --git a/pkgs/development/libraries/exempi/default.nix b/pkgs/development/libraries/exempi/default.nix
index 96d8d1db7a9a..ccdd0048e2aa 100644
--- a/pkgs/development/libraries/exempi/default.nix
+++ b/pkgs/development/libraries/exempi/default.nix
@@ -16,9 +16,9 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [ expat zlib boost ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv darwin.apple_sdk.frameworks.CoreServices ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv darwin.apple_sdk.frameworks.CoreServices ];
 
-  doCheck = stdenv.isLinux && stdenv.is64bit;
+  doCheck = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.is64bit;
   dontDisableStatic = doCheck;
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/libraries/exiv2/default.nix b/pkgs/development/libraries/exiv2/default.nix
index 1591b8021501..56edbdab5d53 100644
--- a/pkgs/development/libraries/exiv2/default.nix
+++ b/pkgs/development/libraries/exiv2/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     removeReferencesTo
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ];
 
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
     # Fix tests on arm
     # https://github.com/Exiv2/exiv2/issues/933
     rm -f ../tests/bugfixes/github/test_CVE_2018_12265.py
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     export DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH''${DYLD_LIBRARY_PATH:+:}$PWD/lib
     export LC_ALL=C
 
diff --git a/pkgs/development/libraries/expat/default.nix b/pkgs/development/libraries/expat/default.nix
index bb97ca8728e0..50ae45f38e9a 100644
--- a/pkgs/development/libraries/expat/default.nix
+++ b/pkgs/development/libraries/expat/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   enableParallelBuilding = true;
 
-  configureFlags = lib.optional stdenv.isFreeBSD "--with-pic";
+  configureFlags = lib.optional stdenv.hostPlatform.isFreeBSD "--with-pic";
 
   outputMan = "dev"; # tiny page for a dev tool
 
diff --git a/pkgs/development/libraries/fb303/default.nix b/pkgs/development/libraries/fb303/default.nix
index 059e666027a0..659497d690f6 100644
--- a/pkgs/development/libraries/fb303/default.nix
+++ b/pkgs/development/libraries/fb303/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
   cmakeFlags = [
     "-DPYTHON_EXTENSIONS=OFF"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.14" # For aligned allocation
   ];
 
diff --git a/pkgs/development/libraries/fbthrift/default.nix b/pkgs/development/libraries/fbthrift/default.nix
index 5ac08f2c6cc3..04bce085c088 100644
--- a/pkgs/development/libraries/fbthrift/default.nix
+++ b/pkgs/development/libraries/fbthrift/default.nix
@@ -39,8 +39,8 @@ stdenv.mkDerivation rec {
   ];
 
   cmakeFlags = [
-    "-DBUILD_SHARED_LIBS=${if stdenv.isDarwin then "OFF" else "ON"}"
-  ] ++ lib.optionals stdenv.isDarwin [
+    "-DBUILD_SHARED_LIBS=${if stdenv.hostPlatform.isDarwin then "OFF" else "ON"}"
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.14" # For aligned allocation
   ];
 
diff --git a/pkgs/development/libraries/fflas-ffpack/default.nix b/pkgs/development/libraries/fflas-ffpack/default.nix
index 65c29f9319ce..1d8c87ba45d1 100644
--- a/pkgs/development/libraries/fflas-ffpack/default.nix
+++ b/pkgs/development/libraries/fflas-ffpack/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     "--with-blas-libs=-lcblas"
     "--with-lapack-libs=-llapacke"
     "--without-archnative"
-  ] ++ lib.optionals stdenv.isx86_64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isx86_64 [
     # disable SIMD instructions (which are enabled *when available* by default)
     # for now we need to be careful to disable *all* relevant versions of an instruction set explicitly (https://github.com/linbox-team/fflas-ffpack/issues/284)
     "--${if stdenv.hostPlatform.sse3Support   then "enable" else "disable"}-sse3"
diff --git a/pkgs/development/libraries/ffmpeg/generic.nix b/pkgs/development/libraries/ffmpeg/generic.nix
index 4e8226c1904a..dc471944654a 100644
--- a/pkgs/development/libraries/ffmpeg/generic.nix
+++ b/pkgs/development/libraries/ffmpeg/generic.nix
@@ -33,14 +33,14 @@
 , fetchpatch2
 
   # Feature flags
-, withAlsa ? withHeadlessDeps && stdenv.isLinux # Alsa in/output supporT
+, withAlsa ? withHeadlessDeps && stdenv.hostPlatform.isLinux # Alsa in/output supporT
 , withAmf ? lib.meta.availableOn stdenv.hostPlatform amf # AMD Media Framework video encoding
 , withAom ? withHeadlessDeps # AV1 reference encoder
-, withAppKit ? withHeadlessDeps && stdenv.isDarwin # Apple AppKit framework
+, withAppKit ? withHeadlessDeps && stdenv.hostPlatform.isDarwin # Apple AppKit framework
 , withAribcaption ? withFullDeps && lib.versionAtLeast version "6.1" # ARIB STD-B24 Caption Decoder/Renderer
 , withAss ? withHeadlessDeps && stdenv.hostPlatform == stdenv.buildPlatform # (Advanced) SubStation Alpha subtitle rendering
-, withAudioToolbox ? withHeadlessDeps && stdenv.isDarwin # Apple AudioToolbox
-, withAvFoundation ? withHeadlessDeps && stdenv.isDarwin # Apple AVFoundation framework
+, withAudioToolbox ? withHeadlessDeps && stdenv.hostPlatform.isDarwin # Apple AudioToolbox
+, withAvFoundation ? withHeadlessDeps && stdenv.hostPlatform.isDarwin # Apple AVFoundation framework
 , withAvisynth ? withFullDeps # AviSynth script files reading
 , withBluray ? withFullDeps # BluRay reading
 , withBs2b ? withFullDeps # bs2b DSP library
@@ -49,12 +49,12 @@
 , withCelt ? withHeadlessDeps # CELT decoder
 , withChromaprint ? withFullDeps # Audio fingerprinting
 , withCodec2 ? withFullDeps # codec2 en/decoding
-, withCoreImage ? withHeadlessDeps && stdenv.isDarwin # Apple CoreImage framework
+, withCoreImage ? withHeadlessDeps && stdenv.hostPlatform.isDarwin # Apple CoreImage framework
 , withCuda ? withFullDeps && withNvcodec
 , withCudaLLVM ? withFullDeps
 , withCuvid ? withHeadlessDeps && withNvcodec
 , withDav1d ? withHeadlessDeps # AV1 decoder (focused on speed and correctness)
-, withDc1394 ? withFullDeps && !stdenv.isDarwin # IIDC-1394 grabbing (ieee 1394)
+, withDc1394 ? withFullDeps && !stdenv.hostPlatform.isDarwin # IIDC-1394 grabbing (ieee 1394)
 , withDrm ? withHeadlessDeps && (with stdenv; isLinux || isFreeBSD) # libdrm support
 , withDvdnav ? withFullDeps && withGPL && lib.versionAtLeast version "7" # needed for DVD demuxing
 , withDvdread ? withFullDeps && withGPL && lib.versionAtLeast version "7" # needed for DVD demuxing
@@ -71,14 +71,14 @@
 , withHarfbuzz ? withHeadlessDeps && lib.versionAtLeast version "6.1" # Needed for drawtext filter
 , withIconv ? withHeadlessDeps
 , withIlbc ? withFullDeps # iLBC de/encoding
-, withJack ? withFullDeps && !stdenv.isDarwin # Jack audio
+, withJack ? withFullDeps && !stdenv.hostPlatform.isDarwin # Jack audio
 , withJxl ? withFullDeps && lib.versionAtLeast version "5" # JPEG XL de/encoding
 , withLadspa ? withFullDeps # LADSPA audio filtering
 , withLcms2 ? withFullDeps # ICC profile support via lcms2
 , withLzma ? withHeadlessDeps # xz-utils
 , withMetal ? false # Unfree and requires manual downloading of files
 , withMfx ? withFullDeps && (with stdenv.hostPlatform; isLinux && !isAarch) # Hardware acceleration via intel-media-sdk/libmfx
-, withModplug ? withFullDeps && !stdenv.isDarwin # ModPlug support
+, withModplug ? withFullDeps && !stdenv.hostPlatform.isDarwin # ModPlug support
 , withMp3lame ? withHeadlessDeps # LAME MP3 encoder
 , withMysofa ? withFullDeps # HRTF support via SOFAlizer
 , withNvdec ? withHeadlessDeps && withNvcodec
@@ -88,21 +88,21 @@
 , withOpencl ? withFullDeps
 , withOpencoreAmrnb ? withFullDeps && withVersion3 # AMR-NB de/encoder
 , withOpencoreAmrwb ? withFullDeps && withVersion3 # AMR-WB decoder
-, withOpengl ? withFullDeps && !stdenv.isDarwin # OpenGL rendering
+, withOpengl ? withFullDeps && !stdenv.hostPlatform.isDarwin # OpenGL rendering
 , withOpenh264 ? withFullDeps # H.264/AVC encoder
 , withOpenjpeg ? withHeadlessDeps # JPEG 2000 de/encoder
 , withOpenmpt ? withFullDeps # Tracked music files decoder
 , withOpus ? withHeadlessDeps # Opus de/encoder
-, withPlacebo ? withFullDeps && !stdenv.isDarwin # libplacebo video processing library
-, withPulse ? withSmallDeps && stdenv.isLinux # Pulseaudio input support
+, withPlacebo ? withFullDeps && !stdenv.hostPlatform.isDarwin # libplacebo video processing library
+, withPulse ? withSmallDeps && stdenv.hostPlatform.isLinux # Pulseaudio input support
 , withQrencode ? withFullDeps && lib.versionAtLeast version "7" # QR encode generation
 , withQuirc ? withFullDeps && lib.versionAtLeast version "7" # QR decoding
 , withRav1e ? withFullDeps # AV1 encoder (focused on speed and safety)
 , withRtmp ? withFullDeps # RTMP[E] support
 , withRubberband ? withFullDeps && withGPL # Rubberband filter
-, withSamba ? withFullDeps && !stdenv.isDarwin && withGPLv3 # Samba protocol
+, withSamba ? withFullDeps && !stdenv.hostPlatform.isDarwin && withGPLv3 # Samba protocol
 , withSdl2 ? withSmallDeps
-, withShaderc ? withFullDeps && !stdenv.isDarwin && lib.versionAtLeast version "5.0"
+, withShaderc ? withFullDeps && !stdenv.hostPlatform.isDarwin && lib.versionAtLeast version "5.0"
 , withShine ? withFullDeps # Fixed-point MP3 encoding
 , withSnappy ? withFullDeps # Snappy compression, needed for hap encoding
 , withSoxr ? withHeadlessDeps # Resampling via soxr
@@ -110,22 +110,22 @@
 , withSrt ? withHeadlessDeps # Secure Reliable Transport (SRT) protocol
 , withSsh ? withHeadlessDeps # SFTP protocol
 , withSvg ? withFullDeps # SVG protocol
-, withSvtav1 ? withHeadlessDeps && !stdenv.isAarch64 && !stdenv.hostPlatform.isMinGW # AV1 encoder/decoder (focused on speed and correctness)
+, withSvtav1 ? withHeadlessDeps && !stdenv.hostPlatform.isAarch64 && !stdenv.hostPlatform.isMinGW # AV1 encoder/decoder (focused on speed and correctness)
 , withTensorflow ? false # Tensorflow dnn backend support (Increases closure size by ~390 MiB)
 , withTheora ? withHeadlessDeps # Theora encoder
 , withTwolame ? withFullDeps # MP2 encoding
-, withV4l2 ? withHeadlessDeps && stdenv.isLinux  # Video 4 Linux support
+, withV4l2 ? withHeadlessDeps && stdenv.hostPlatform.isLinux  # Video 4 Linux support
 , withV4l2M2m ? withV4l2
 , withVaapi ? withHeadlessDeps && (with stdenv; isLinux || isFreeBSD) # Vaapi hardware acceleration
 , withVdpau ? withSmallDeps && !stdenv.hostPlatform.isMinGW # Vdpau hardware acceleration
-, withVideoToolbox ? withHeadlessDeps && stdenv.isDarwin # Apple VideoToolbox
+, withVideoToolbox ? withHeadlessDeps && stdenv.hostPlatform.isDarwin # Apple VideoToolbox
 , withVidStab ? withFullDeps && withGPL # Video stabilization
-, withVmaf ? withFullDeps && !stdenv.isAarch64 && lib.versionAtLeast version "5" # Netflix's VMAF (Video Multi-Method Assessment Fusion)
+, withVmaf ? withFullDeps && !stdenv.hostPlatform.isAarch64 && lib.versionAtLeast version "5" # Netflix's VMAF (Video Multi-Method Assessment Fusion)
 , withVoAmrwbenc ? withFullDeps && withVersion3 # AMR-WB encoder
 , withVorbis ? withHeadlessDeps # Vorbis de/encoding, native encoder exists
 , withVpl ? false # Hardware acceleration via intel libvpl
 , withVpx ? withHeadlessDeps && stdenv.buildPlatform == stdenv.hostPlatform # VP8 & VP9 de/encoding
-, withVulkan ? withSmallDeps && !stdenv.isDarwin
+, withVulkan ? withSmallDeps && !stdenv.hostPlatform.isDarwin
 , withWebp ? withHeadlessDeps # WebP encoder
 , withX264 ? withHeadlessDeps && withGPL # H.264/AVC encoder
 , withX265 ? withHeadlessDeps && withGPL # H.265/HEVC encoder
@@ -827,7 +827,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # Fails with SIGABRT otherwise FIXME: Why?
   checkPhase = let
-    ldLibraryPathEnv = if stdenv.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
+    ldLibraryPathEnv = if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
     libsToLink = [ ]
       ++ optional buildAvcodec "libavcodec"
       ++ optional buildAvdevice "libavdevice"
@@ -856,7 +856,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # Set RUNPATH so that libnvcuvid and libcuda in /run/opengl-driver(-32)/lib can be found.
   # See the explanation in addDriverRunpath.
-  postFixup = optionalString (stdenv.isLinux && withLib) ''
+  postFixup = optionalString (stdenv.hostPlatform.isLinux && withLib) ''
     addDriverRunpath ${placeholder "lib"}/lib/libavcodec.so
     addDriverRunpath ${placeholder "lib"}/lib/libavutil.so
   ''
diff --git a/pkgs/development/libraries/fftw/default.nix b/pkgs/development/libraries/fftw/default.nix
index 7c06a346e4bb..b6107f3ef91a 100644
--- a/pkgs/development/libraries/fftw/default.nix
+++ b/pkgs/development/libraries/fftw/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation (finalAttrs: {
   ++ lib.optional (precision != "double") "--enable-${precision}"
   # https://www.fftw.org/fftw3_doc/SIMD-alignment-and-fftw_005fmalloc.html
   # FFTW will try to detect at runtime whether the CPU supports these extensions
-  ++ lib.optional (stdenv.isx86_64 && (precision == "single" || precision == "double"))
+  ++ lib.optional (stdenv.hostPlatform.isx86_64 && (precision == "single" || precision == "double"))
     "--enable-sse2 --enable-avx --enable-avx2 --enable-avx512 --enable-avx128-fma"
   ++ lib.optional enableMpi "--enable-mpi"
   # doc generation causes Fortran wrapper generation which hard-codes gcc
diff --git a/pkgs/development/libraries/fizz/default.nix b/pkgs/development/libraries/fizz/default.nix
index cc7a249cf76f..4c38c54316b7 100644
--- a/pkgs/development/libraries/fizz/default.nix
+++ b/pkgs/development/libraries/fizz/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation (finalAttrs: {
   cmakeFlags = [
     "-Wno-dev"
     (lib.cmakeBool "BUILD_TESTS" finalAttrs.finalPackage.doCheck)
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.14" # For aligned allocation
   ];
 
diff --git a/pkgs/development/libraries/folks/default.nix b/pkgs/development/libraries/folks/default.nix
index edbebdb1b8da..777bef924662 100644
--- a/pkgs/development/libraries/folks/default.nix
+++ b/pkgs/development/libraries/folks/default.nix
@@ -78,7 +78,7 @@ stdenv.mkDerivation (finalAttrs: {
   mesonFlags = [
     "-Ddocs=true"
     "-Dtelepathy_backend=${lib.boolToString telepathySupport}"
-    "-Dtests=${lib.boolToString (finalAttrs.finalPackage.doCheck && stdenv.isLinux)}"
+    "-Dtests=${lib.boolToString (finalAttrs.finalPackage.doCheck && stdenv.hostPlatform.isLinux)}"
   ];
 
   # backends/eds/lib/libfolks-eds.so.26.0.0.p/edsf-persona-store.c:10697:4:
diff --git a/pkgs/development/libraries/folly/default.nix b/pkgs/development/libraries/folly/default.nix
index 532fc4847715..8a601382f8ea 100644
--- a/pkgs/development/libraries/folly/default.nix
+++ b/pkgs/development/libraries/folly/default.nix
@@ -55,10 +55,10 @@ stdenv.mkDerivation rec {
     libunwind
     fmt_8
     zstd
-  ] ++ lib.optional stdenv.isLinux jemalloc;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux jemalloc;
 
   # jemalloc headers are required in include/folly/portability/Malloc.h
-  propagatedBuildInputs = lib.optional stdenv.isLinux jemalloc;
+  propagatedBuildInputs = lib.optional stdenv.hostPlatform.isLinux jemalloc;
 
   env.NIX_CFLAGS_COMPILE = toString [ "-DFOLLY_MOBILE=${if follyMobile then "1" else "0"}" "-fpermissive" ];
   cmakeFlags = [
@@ -66,13 +66,13 @@ stdenv.mkDerivation rec {
 
     # temporary hack until folly builds work on aarch64,
     # see https://github.com/facebook/folly/issues/1880
-    "-DCMAKE_LIBRARY_ARCHITECTURE=${if stdenv.isx86_64 then "x86_64" else "dummy"}"
+    "-DCMAKE_LIBRARY_ARCHITECTURE=${if stdenv.hostPlatform.isx86_64 then "x86_64" else "dummy"}"
 
     # ensure correct dirs in $dev/lib/pkgconfig/libfolly.pc
     # see https://github.com/NixOS/nixpkgs/issues/144170
     "-DCMAKE_INSTALL_INCLUDEDIR=include"
     "-DCMAKE_INSTALL_LIBDIR=lib"
-  ] ++ lib.optional (stdenv.isDarwin && stdenv.isx86_64) [
+  ] ++ lib.optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.13"
   ];
 
diff --git a/pkgs/development/libraries/fontconfig/default.nix b/pkgs/development/libraries/fontconfig/default.nix
index 83c5e3afc271..4f7f3c0fe1e9 100644
--- a/pkgs/development/libraries/fontconfig/default.nix
+++ b/pkgs/development/libraries/fontconfig/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [
     expat
-  ] ++ lib.optional stdenv.isDarwin CoreFoundation;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin CoreFoundation;
 
   propagatedBuildInputs = [
     freetype
diff --git a/pkgs/development/libraries/fontconfig/make-fonts-conf.nix b/pkgs/development/libraries/fontconfig/make-fonts-conf.nix
index ff0d95ba4451..669b66267f87 100644
--- a/pkgs/development/libraries/fontconfig/make-fonts-conf.nix
+++ b/pkgs/development/libraries/fontconfig/make-fonts-conf.nix
@@ -9,13 +9,13 @@ let fontconfig_ = fontconfig; in
     # nix user profile
     "~/.nix-profile/lib/X11/fonts" "~/.nix-profile/share/fonts"
   ]
-  ++ lib.optional stdenv.isDarwin "~/Library/Fonts"
+  ++ lib.optional stdenv.hostPlatform.isDarwin "~/Library/Fonts"
   ++ [
     # FHS paths for non-NixOS platforms
     "/usr/share/fonts" "/usr/local/share/fonts"
   ]
   # darwin paths
-  ++ lib.optionals stdenv.isDarwin [ "/Library/Fonts" "/System/Library/Fonts" ]
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ "/Library/Fonts" "/System/Library/Fonts" ]
   # nix default profile
   ++ [ "/nix/var/nix/profiles/default/lib/X11/fonts" "/nix/var/nix/profiles/default/share/fonts" ]
 
diff --git a/pkgs/development/libraries/fox/fox-1.6.nix b/pkgs/development/libraries/fox/fox-1.6.nix
index 4ceb6261231e..e10d01d2c842 100644
--- a/pkgs/development/libraries/fox/fox-1.6.nix
+++ b/pkgs/development/libraries/fox/fox-1.6.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     libpng libjpeg libtiff zlib bzip2 libXcursor libXrandr
     libXext libXft libGLU libGL libXfixes xinput
-  ] ++ lib.optional stdenv.isDarwin CoreServices;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin CoreServices;
 
   doCheck = true;
 
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
   hardeningDisable = [ "format" ];
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     branch = "1.6";
     description = "C++ based class library for building Graphical User Interfaces";
     longDescription = ''
diff --git a/pkgs/development/libraries/freealut/default.nix b/pkgs/development/libraries/freealut/default.nix
index dbae2b20b61c..2f98b1c8e7a2 100644
--- a/pkgs/development/libraries/freealut/default.nix
+++ b/pkgs/development/libraries/freealut/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   buildInputs = [ openal
-  ] ++ lib.optional stdenv.isDarwin
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin
     darwin.apple_sdk.frameworks.OpenAL
   ;
 
diff --git a/pkgs/development/libraries/freeglut/default.nix b/pkgs/development/libraries/freeglut/default.nix
index c3a0fdb797f6..590167fc7036 100644
--- a/pkgs/development/libraries/freeglut/default.nix
+++ b/pkgs/development/libraries/freeglut/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ cmake ];
   buildInputs = [ libICE libXext libXi libXrandr libXxf86vm libGLU ];
 
-  cmakeFlags = lib.optionals stdenv.isDarwin [
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [
                  "-DOPENGL_INCLUDE_DIR=${libGLX.dev}/include"
                  "-DOPENGL_gl_LIBRARY:FILEPATH=${libGLX}/lib/libGL.dylib"
                  "-DOPENGL_glu_LIBRARY:FILEPATH=${libGLU}/lib/libGLU.dylib"
diff --git a/pkgs/development/libraries/freeimage/default.nix b/pkgs/development/libraries/freeimage/default.nix
index 20ced14ace6e..dd63935b23fd 100644
--- a/pkgs/development/libraries/freeimage/default.nix
+++ b/pkgs/development/libraries/freeimage/default.nix
@@ -30,22 +30,22 @@ stdenv.mkDerivation (finalAttrs: {
       --replace "pkg-config" "$PKG_CONFIG"
     substituteInPlace Makefile.gnu \
       --replace "pkg-config" "$PKG_CONFIG"
-  '' + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     # Upstream Makefile hardcodes i386 and x86_64 architectures only
     substituteInPlace Makefile.osx --replace "x86_64" "arm64"
   '';
 
   nativeBuildInputs = [
     pkg-config
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
     fixDarwinDylibNames
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     autoSignDarwinBinariesHook
   ];
   buildInputs = [ libtiff libtiff.dev_private libpng zlib libwebp libraw openexr openjpeg libjpeg libjpeg.dev_private jxrlib ];
 
-  postBuild = lib.optionalString (!stdenv.isDarwin) ''
+  postBuild = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     make -f Makefile.fip
   '';
 
@@ -56,13 +56,13 @@ stdenv.mkDerivation (finalAttrs: {
     mkdir -p $INCDIR $INSTALLDIR
   ''
   # Workaround for Makefiles.osx not using ?=
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     makeFlagsArray+=( "INCDIR=$INCDIR" "INSTALLDIR=$INSTALLDIR" )
   '';
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     make -f Makefile.fip install
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     ln -s $out/lib/libfreeimage.3.dylib $out/lib/libfreeimage.dylib
   '';
 
diff --git a/pkgs/development/libraries/freenect/default.nix b/pkgs/development/libraries/freenect/default.nix
index 4be38fbef062..f58785c1e1bd 100644
--- a/pkgs/development/libraries/freenect/default.nix
+++ b/pkgs/development/libraries/freenect/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [ libusb1 libglut libGLU libGL libXi libXmu ]
-    ++ lib.optionals stdenv.isDarwin [ GLUT Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ GLUT Cocoa ];
 
   nativeBuildInputs = [ cmake pkg-config ];
 
diff --git a/pkgs/development/libraries/freetype/default.nix b/pkgs/development/libraries/freetype/default.nix
index 8ff0005d0ff0..34e156256afd 100644
--- a/pkgs/development/libraries/freetype/default.nix
+++ b/pkgs/development/libraries/freetype/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ pkg-config which ]
     ++ lib.optional (!stdenv.hostPlatform.isWindows) makeWrapper
     # FreeType requires GNU Make, which is not part of stdenv on FreeBSD.
-    ++ lib.optional (!stdenv.isLinux) gnumake;
+    ++ lib.optional (!stdenv.hostPlatform.isLinux) gnumake;
 
   patches = [
     ./enable-table-validation.patch
@@ -65,7 +65,7 @@ stdenv.mkDerivation (finalAttrs: {
   CC_BUILD = "${buildPackages.stdenv.cc}/bin/cc";
 
   # The asm for armel is written with the 'asm' keyword.
-  CFLAGS = lib.optionalString stdenv.isAarch32 "-std=gnu99"
+  CFLAGS = lib.optionalString stdenv.hostPlatform.isAarch32 "-std=gnu99"
     + lib.optionalString stdenv.hostPlatform.is32bit " -D_FILE_OFFSET_BITS=64";
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/libraries/freexl/default.nix b/pkgs/development/libraries/freexl/default.nix
index 74d4a646b074..ffcf81e92f58 100644
--- a/pkgs/development/libraries/freexl/default.nix
+++ b/pkgs/development/libraries/freexl/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     expat
     minizip
     zlib
-  ] ++ lib.optional stdenv.isDarwin libiconv;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/fribidi/default.nix b/pkgs/development/libraries/fribidi/default.nix
index f5d6bcc7df34..691b826e3af5 100644
--- a/pkgs/development/libraries/fribidi/default.nix
+++ b/pkgs/development/libraries/fribidi/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   nativeBuildInputs = [ meson ninja pkg-config ]
-    ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+    ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   depsBuildBuild = [ buildPackages.stdenv.cc ];
 
diff --git a/pkgs/development/libraries/g2o/default.nix b/pkgs/development/libraries/g2o/default.nix
index 7ff0c207060c..6f6560ea9f3f 100644
--- a/pkgs/development/libraries/g2o/default.nix
+++ b/pkgs/development/libraries/g2o/default.nix
@@ -28,7 +28,7 @@ mkDerivation rec {
     # Detection script is broken
     "-DQGLVIEWER_INCLUDE_DIR=${libqglviewer}/include/QGLViewer"
     "-DG2O_BUILD_EXAMPLES=OFF"
-  ] ++ lib.optionals stdenv.isx86_64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isx86_64 [
     "-DDO_SSE_AUTODETECT=OFF"
     "-DDISABLE_SSE3=${  if stdenv.hostPlatform.sse3Support   then "OFF" else "ON"}"
     "-DDISABLE_SSE4_1=${if stdenv.hostPlatform.sse4_1Support then "OFF" else "ON"}"
@@ -43,6 +43,6 @@ mkDerivation rec {
     maintainers = with maintainers; [ lopsided98 ];
     platforms = platforms.all;
     # fatal error: 'qglviewer.h' file not found
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/libraries/galario/default.nix b/pkgs/development/libraries/galario/default.nix
index 8b54cfb7b879..add2445f4462 100644
--- a/pkgs/development/libraries/galario/default.nix
+++ b/pkgs/development/libraries/galario/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ fftw fftwFloat ]
   ++ lib.optional enablePython pythonPackages.python
-  ++ lib.optional stdenv.isDarwin llvmPackages.openmp
+  ++ lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp
   ;
 
   propagatedBuildInputs = lib.optionals enablePython [
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
   '';
 
   preCheck = ''
-    ${if stdenv.isDarwin then "export DYLD_LIBRARY_PATH=$(pwd)/src/" else "export LD_LIBRARY_PATH=$(pwd)/src/"}
+    ${if stdenv.hostPlatform.isDarwin then "export DYLD_LIBRARY_PATH=$(pwd)/src/" else "export LD_LIBRARY_PATH=$(pwd)/src/"}
     ${lib.optionalString enablePython "sed -i -e 's|^#!.*|#!${stdenv.shell}|' python/py.test.sh"}
   '';
 
@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
 
-  postInstall = lib.optionalString (stdenv.isDarwin && enablePython) ''
+  postInstall = lib.optionalString (stdenv.hostPlatform.isDarwin && enablePython) ''
     install_name_tool -change libgalario.dylib $out/lib/libgalario.dylib $out/lib/python*/site-packages/galario/double/libcommon.so
     install_name_tool -change libgalario_single.dylib $out/lib/libgalario_single.dylib $out/lib/python*/site-packages/galario/single/libcommon.so
   '';
diff --git a/pkgs/development/libraries/garmintools/default.nix b/pkgs/development/libraries/garmintools/default.nix
index e183a24c8128..2c5740692f4b 100644
--- a/pkgs/development/libraries/garmintools/default.nix
+++ b/pkgs/development/libraries/garmintools/default.nix
@@ -14,6 +14,6 @@ stdenv.mkDerivation rec {
     maintainers = [ ];
     platforms = lib.platforms.unix;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/libraries/gbenchmark/default.nix b/pkgs/development/libraries/gbenchmark/default.nix
index bf60ec5e4297..be39b0d7cbdd 100644
--- a/pkgs/development/libraries/gbenchmark/default.nix
+++ b/pkgs/development/libraries/gbenchmark/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   '';
 
   # Tests fail on 32-bit due to not enough precision
-  doCheck = stdenv.is64bit;
+  doCheck = stdenv.hostPlatform.is64bit;
 
   passthru.tests = {
     inherit prometheus-cpp;
diff --git a/pkgs/development/libraries/gcc/libstdc++/5.nix b/pkgs/development/libraries/gcc/libstdc++/5.nix
index 48a034aebceb..455c84e5dc18 100644
--- a/pkgs/development/libraries/gcc/libstdc++/5.nix
+++ b/pkgs/development/libraries/gcc/libstdc++/5.nix
@@ -114,6 +114,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.linux;
     maintainers = with maintainers; [ abbradar ];
     # never built on aarch64-linux since first introduction in nixpkgs
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/libraries/gd/default.nix b/pkgs/development/libraries/gd/default.nix
index 0a74d6122ee2..6b1a471d4aac 100644
--- a/pkgs/development/libraries/gd/default.nix
+++ b/pkgs/development/libraries/gd/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     "--enable-gd-formats"
   ]
     # -pthread gets passed to clang, causing warnings
-    ++ lib.optional stdenv.isDarwin "--enable-werror=no";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "--enable-werror=no";
 
   nativeBuildInputs = [ autoconf automake pkg-config ];
 
diff --git a/pkgs/development/libraries/gdal/default.nix b/pkgs/development/libraries/gdal/default.nix
index cf2ff67acf41..18f82b99afa0 100644
--- a/pkgs/development/libraries/gdal/default.nix
+++ b/pkgs/development/libraries/gdal/default.nix
@@ -4,7 +4,7 @@
 , fetchFromGitHub
 
 , useMinimalFeatures ? false
-, useTiledb ? (!useMinimalFeatures) && !(stdenv.isDarwin && stdenv.isx86_64)
+, useTiledb ? (!useMinimalFeatures) && !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64)
 , useLibHEIF ? (!useMinimalFeatures)
 , useLibJXL ? (!useMinimalFeatures)
 , useMysql ? (!useMinimalFeatures)
@@ -107,9 +107,9 @@ stdenv.mkDerivation (finalAttrs: {
     "-DMYSQL_LIBRARY=${lib.getLib libmysqlclient}/lib/${lib.optionalString (libmysqlclient.pname != "mysql") "mysql/"}libmysqlclient${stdenv.hostPlatform.extensions.sharedLibrary}"
   ] ++ lib.optionals finalAttrs.doInstallCheck [
     "-DBUILD_TESTING=ON"
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     "-DCMAKE_SKIP_BUILD_RPATH=ON" # without, libgdal.so can't find libmariadb.so
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DCMAKE_BUILD_WITH_INSTALL_NAME_DIR=ON"
   ] ++ lib.optionals (!useTiledb) [
     "-DGDAL_USE_TILEDB=OFF"
@@ -145,8 +145,8 @@ stdenv.mkDerivation (finalAttrs: {
       netCdfDeps = lib.optionals useNetCDF [ netcdf ];
       armadilloDeps = lib.optionals useArmadillo [ armadillo ];
 
-      darwinDeps = lib.optionals stdenv.isDarwin [ libiconv ];
-      nonDarwinDeps = lib.optionals (!stdenv.isDarwin) ([
+      darwinDeps = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
+      nonDarwinDeps = lib.optionals (!stdenv.hostPlatform.isDarwin) ([
         # tests for formats enabled by these packages fail on macos
         openexr
         xercesc
@@ -256,10 +256,10 @@ stdenv.mkDerivation (finalAttrs: {
     # failing with PROJ 9.3.1
     # https://github.com/OSGeo/gdal/issues/8908
     "test_osr_esri_28"
-  ] ++ lib.optionals (!stdenv.isx86_64) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isx86_64) [
     # likely precision-related expecting x87 behaviour
     "test_jp2openjpeg_22"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # flaky on macos
     "test_rda_download_queue"
   ] ++ lib.optionals (lib.versionOlder proj.version "8") [
diff --git a/pkgs/development/libraries/gdcm/default.nix b/pkgs/development/libraries/gdcm/default.nix
index 33afe0ea7c54..50ad7bdd9fd6 100644
--- a/pkgs/development/libraries/gdcm/default.nix
+++ b/pkgs/development/libraries/gdcm/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     cmake
     pkg-config
-  ] ++ lib.optional stdenv.isDarwin DarwinTools;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin DarwinTools;
 
   buildInputs = [
     expat
@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
     zlib
   ] ++ lib.optionals enableVTK [
     vtk
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ApplicationServices
     Cocoa
     libiconv
@@ -77,7 +77,7 @@ stdenv.mkDerivation rec {
     "TestSCUValidation"
     # errors because 3 classes not wrapped:
     "TestWrapPython"
-  ] ++ lib.optionals (stdenv.isAarch64 && stdenv.isLinux) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) [
     "TestRescaler2"
   ];
 
diff --git a/pkgs/development/libraries/gdk-pixbuf/default.nix b/pkgs/development/libraries/gdk-pixbuf/default.nix
index 59760504f98e..b7ba12245362 100644
--- a/pkgs/development/libraries/gdk-pixbuf/default.nix
+++ b/pkgs/development/libraries/gdk-pixbuf/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation (finalAttrs: {
 
     # for man pages
     docutils
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ] ++ lib.optionals withIntrospection [
     gi-docgen
@@ -105,7 +105,7 @@ stdenv.mkDerivation (finalAttrs: {
       moveToOutput "bin" "$dev"
       moveToOutput "bin/gdk-pixbuf-thumbnailer" "$out"
 
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # meson erroneously installs loaders with .dylib extension on Darwin.
       # Their @rpath has to be replaced before gdk-pixbuf-query-loaders looks at them.
       for f in $out/${finalAttrs.passthru.moduleDir}/*.dylib; do
@@ -118,7 +118,7 @@ stdenv.mkDerivation (finalAttrs: {
     '';
 
   # The fixDarwinDylibNames hook doesn't patch binaries.
-  preFixup = lib.optionalString stdenv.isDarwin ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     for f in $out/bin/* $dev/bin/*; do
         install_name_tool -change @rpath/libgdk_pixbuf-2.0.0.dylib $out/lib/libgdk_pixbuf-2.0.0.dylib $f
     done
@@ -134,7 +134,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   setupHook = ./setup-hook.sh;
 
-  separateDebugInfo = stdenv.isLinux;
+  separateDebugInfo = stdenv.hostPlatform.isLinux;
 
   passthru = {
     updateScript = gnome.updateScript {
diff --git a/pkgs/development/libraries/gegl/default.nix b/pkgs/development/libraries/gegl/default.nix
index addc4a9dbe44..95cdef473467 100644
--- a/pkgs/development/libraries/gegl/default.nix
+++ b/pkgs/development/libraries/gegl/default.nix
@@ -74,7 +74,7 @@ stdenv.mkDerivation rec {
     gexiv2
     openexr
     suitesparse
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     OpenCL
   ] ++ lib.optionals stdenv.cc.isClang [
     llvmPackages.openmp
@@ -114,7 +114,7 @@ stdenv.mkDerivation rec {
   '';
 
   # tests fail to connect to the com.apple.fonts daemon in sandboxed mode
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Graph-based image processing framework";
diff --git a/pkgs/development/libraries/gensio/default.nix b/pkgs/development/libraries/gensio/default.nix
index 8a895c36e865..6a183035efbe 100644
--- a/pkgs/development/libraries/gensio/default.nix
+++ b/pkgs/development/libraries/gensio/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ openssl ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ openssl ];
 
   meta = with lib; {
     description = "General Stream I/O";
diff --git a/pkgs/development/libraries/geoclue/default.nix b/pkgs/development/libraries/geoclue/default.nix
index 3c6a40eeb5cb..84fa20f8efad 100644
--- a/pkgs/development/libraries/geoclue/default.nix
+++ b/pkgs/development/libraries/geoclue/default.nix
@@ -66,7 +66,7 @@ stdenv.mkDerivation rec {
     avahi
   ] ++ lib.optionals withDemoAgent [
     libnotify gdk-pixbuf
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     modemmanager
   ];
 
@@ -83,7 +83,7 @@ stdenv.mkDerivation rec {
     "-Dmozilla-api-key=5c28d1f4-9511-47ff-b11a-2bef80fc177c"
     "-Ddbus-srv-user=geoclue"
     "-Ddbus-sys-dir=${placeholder "out"}/share/dbus-1/system.d"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-D3g-source=false"
     "-Dcdma-source=false"
     "-Dmodem-gps-source=false"
@@ -96,7 +96,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin && withDemoAgent;
+    broken = stdenv.hostPlatform.isDarwin && withDemoAgent;
     description = "Geolocation framework and some data providers";
     homepage = "https://gitlab.freedesktop.org/geoclue/geoclue/wikis/home";
     maintainers = with maintainers; [ raskin mimame ];
diff --git a/pkgs/development/libraries/geogram/default.nix b/pkgs/development/libraries/geogram/default.nix
index 619b5dfcdf57..444975de853c 100644
--- a/pkgs/development/libraries/geogram/default.nix
+++ b/pkgs/development/libraries/geogram/default.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
     ./replace-bundled-zlib.patch
   ];
 
-  postPatch = lib.optionalString stdenv.isAarch64 ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isAarch64 ''
     substituteInPlace cmake/platforms/*/config.cmake \
       --replace "-m64" ""
   '';
@@ -120,7 +120,7 @@ stdenv.mkDerivation rec {
 
     # Broken on aarch64-linux as of version 1.8.3
     # See https://github.com/BrunoLevy/geogram/issues/74
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
 
     platforms = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
     maintainers = with maintainers; [ tmarkus ];
diff --git a/pkgs/development/libraries/geos/3.11.nix b/pkgs/development/libraries/geos/3.11.nix
index fb3eccf997a1..32e1f39965d7 100644
--- a/pkgs/development/libraries/geos/3.11.nix
+++ b/pkgs/development/libraries/geos/3.11.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ cmake ];
 
   # https://github.com/libgeos/geos/issues/930
-  cmakeFlags = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  cmakeFlags = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     "-DCMAKE_CTEST_ARGUMENTS=--exclude-regex;unit-geom-Envelope"
   ];
 
diff --git a/pkgs/development/libraries/geos/default.nix b/pkgs/development/libraries/geos/default.nix
index 849fe64634a5..0cd143a1ded4 100644
--- a/pkgs/development/libraries/geos/default.nix
+++ b/pkgs/development/libraries/geos/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ cmake ];
 
   # https://github.com/libgeos/geos/issues/930
-  cmakeFlags = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  cmakeFlags = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     "-DCMAKE_CTEST_ARGUMENTS=--exclude-regex;unit-geom-Envelope"
   ];
 
diff --git a/pkgs/development/libraries/getdns/default.nix b/pkgs/development/libraries/getdns/default.nix
index 69d7f17dafe7..b85dc689d96c 100644
--- a/pkgs/development/libraries/getdns/default.nix
+++ b/pkgs/development/libraries/getdns/default.nix
@@ -62,7 +62,7 @@ in rec {
     nativeBuildInputs = [ cmake doxygen yq ];
 
     buildInputs = [ getdns libyaml openssl systemd ]
-      ++ lib.optionals stdenv.isDarwin [ darwin.Security ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.Security ];
 
     postInstall = ''
       rm -r $out/share/doc
diff --git a/pkgs/development/libraries/gettext/default.nix b/pkgs/development/libraries/gettext/default.nix
index abb692aebc1e..0518a40c2930 100644
--- a/pkgs/development/libraries/gettext/default.nix
+++ b/pkgs/development/libraries/gettext/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   hardeningDisable = [ "format" ];
 
-  LDFLAGS = lib.optionalString stdenv.isSunOS "-lm -lmd -lmp -luutil -lnvpair -lnsl -lidmap -lavl -lsec";
+  LDFLAGS = lib.optionalString stdenv.hostPlatform.isSunOS "-lm -lmd -lmp -luutil -lnvpair -lnsl -lidmap -lavl -lsec";
 
   configureFlags = [
      "--disable-csharp"
@@ -56,7 +56,7 @@ stdenv.mkDerivation rec {
   buildInputs = lib.optionals (!stdenv.hostPlatform.isMinGW) [
     bash
   ]
-  ++ lib.optionals (!stdenv.isLinux && !stdenv.hostPlatform.isCygwin) [
+  ++ lib.optionals (!stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isCygwin) [
     # HACK, see #10874 (and 14664)
     libiconv
   ];
@@ -102,6 +102,6 @@ stdenv.mkDerivation rec {
   };
 }
 
-// lib.optionalAttrs stdenv.isDarwin {
+// lib.optionalAttrs stdenv.hostPlatform.isDarwin {
   makeFlags = [ "CFLAGS=-D_FORTIFY_SOURCE=0" ];
 }
diff --git a/pkgs/development/libraries/gexiv2/default.nix b/pkgs/development/libraries/gexiv2/default.nix
index c560a3fc10e9..7a0e61cbf2b0 100644
--- a/pkgs/development/libraries/gexiv2/default.nix
+++ b/pkgs/development/libraries/gexiv2/default.nix
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   preCheck = let
-    libSuffix = if stdenv.isDarwin then "2.dylib" else "so.2";
+    libSuffix = if stdenv.hostPlatform.isDarwin then "2.dylib" else "so.2";
   in ''
     # Our gobject-introspection patches make the shared library paths absolute
     # in the GIR files. When running unit tests, the library is not yet installed,
diff --git a/pkgs/development/libraries/gfxstream/default.nix b/pkgs/development/libraries/gfxstream/default.nix
index e3164c95a4c6..6dd5a11e841f 100644
--- a/pkgs/development/libraries/gfxstream/default.nix
+++ b/pkgs/development/libraries/gfxstream/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
   ];
 
   # Ensure that meson can find an Objective-C compiler on Darwin.
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace meson.build \
       --replace-fail "project('gfxstream_backend', 'cpp', 'c'" "project('gfxstream_backend', 'cpp', 'c', 'objc'"
   '';
@@ -30,7 +30,7 @@ stdenv.mkDerivation {
   nativeBuildInputs = [ meson ninja pkg-config python3 ];
   buildInputs = [ aemu libglvnd vulkan-headers vulkan-loader xorg.libX11 ]
     ++ lib.optionals (lib.meta.availableOn stdenv.hostPlatform libdrm) [ libdrm ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Cocoa
       darwin.apple_sdk.frameworks.CoreGraphics
       darwin.apple_sdk.frameworks.IOKit
@@ -39,7 +39,7 @@ stdenv.mkDerivation {
       darwin.apple_sdk.frameworks.QuartzCore
     ];
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     NIX_LDFLAGS = toString [
       "-framework Cocoa"
       "-framework IOKit"
@@ -51,7 +51,7 @@ stdenv.mkDerivation {
   };
 
   # dlopens libvulkan.
-  preConfigure = lib.optionalString (!stdenv.isDarwin) ''
+  preConfigure = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mesonFlagsArray=(-Dcpp_link_args="-Wl,--push-state -Wl,--no-as-needed -lvulkan -Wl,--pop-state")
   '';
 
diff --git a/pkgs/development/libraries/giflib/default.nix b/pkgs/development/libraries/giflib/default.nix
index cc5ef6f64369..c6dd7c81833f 100644
--- a/pkgs/development/libraries/giflib/default.nix
+++ b/pkgs/development/libraries/giflib/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     ./mingw-install-exes.patch
   ];
 
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
 
diff --git a/pkgs/development/libraries/givaro/default.nix b/pkgs/development/libraries/givaro/default.nix
index 44fe14396836..a77cc10e2e36 100644
--- a/pkgs/development/libraries/givaro/default.nix
+++ b/pkgs/development/libraries/givaro/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [
     "--without-archnative"
-  ] ++ lib.optionals stdenv.isx86_64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isx86_64 [
     # disable SIMD instructions (which are enabled *when available* by default)
     "--${if stdenv.hostPlatform.sse3Support   then "enable" else "disable"}-sse3"
     "--${if stdenv.hostPlatform.ssse3Support  then "enable" else "disable"}-ssse3"
diff --git a/pkgs/development/libraries/gjs/default.nix b/pkgs/development/libraries/gjs/default.nix
index 604435cee510..99fb182bc88d 100644
--- a/pkgs/development/libraries/gjs/default.nix
+++ b/pkgs/development/libraries/gjs/default.nix
@@ -83,11 +83,11 @@ in stdenv.mkDerivation (finalAttrs: {
 
   mesonFlags = [
     "-Dinstalled_test_prefix=${placeholder "installedTests"}"
-  ] ++ lib.optionals (!stdenv.isLinux || stdenv.hostPlatform.isMusl) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isMusl) [
     "-Dprofiler=disabled"
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postPatch = ''
     patchShebangs build/choose-tests-locale.sh
@@ -130,7 +130,7 @@ in stdenv.mkDerivation (finalAttrs: {
     runHook postCheck
   '';
 
-  separateDebugInfo = stdenv.isLinux;
+  separateDebugInfo = stdenv.hostPlatform.isLinux;
 
   passthru = {
     tests = {
diff --git a/pkgs/development/libraries/gl2ps/default.nix b/pkgs/development/libraries/gl2ps/default.nix
index f1d67c8c8855..eec23cef70bc 100644
--- a/pkgs/development/libraries/gl2ps/default.nix
+++ b/pkgs/development/libraries/gl2ps/default.nix
@@ -26,11 +26,11 @@ stdenv.mkDerivation rec {
   buildInputs = [
     zlib
     libpng
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libGL
     libGLU
     libglut
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.OpenGL
   ];
 
diff --git a/pkgs/development/libraries/glew/1.10.nix b/pkgs/development/libraries/glew/1.10.nix
index 5d8f155a5c61..a675eebaa342 100644
--- a/pkgs/development/libraries/glew/1.10.nix
+++ b/pkgs/development/libraries/glew/1.10.nix
@@ -13,8 +13,8 @@ stdenv.mkDerivation (finalAttrs: {
     sha256 = "01zki46dr5khzlyywr3cg615bcal32dazfazkf360s1znqh17i4r";
   };
 
-  buildInputs = if stdenv.isDarwin then [ AGL ] else [ libXmu libXi libXext ];
-  propagatedBuildInputs = if stdenv.isDarwin then [ OpenGL ] else [ libGLU ]; # GL/glew.h includes GL/glu.h
+  buildInputs = if stdenv.hostPlatform.isDarwin then [ AGL ] else [ libXmu libXi libXext ];
+  propagatedBuildInputs = if stdenv.hostPlatform.isDarwin then [ OpenGL ] else [ libGLU ]; # GL/glew.h includes GL/glu.h
 
   outputs = [ "out" "dev" ];
 
diff --git a/pkgs/development/libraries/glew/default.nix b/pkgs/development/libraries/glew/default.nix
index 5b774f58717c..8d68ad086764 100644
--- a/pkgs/development/libraries/glew/default.nix
+++ b/pkgs/development/libraries/glew/default.nix
@@ -8,7 +8,7 @@
 , libXi
 , libXext
 , OpenGL
-, enableEGL ? (!stdenv.isDarwin)
+, enableEGL ? (!stdenv.hostPlatform.isDarwin)
 , testers
 , mesa
 }:
@@ -40,8 +40,8 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = lib.optionals (!stdenv.isDarwin) [ libXmu libXi libXext ];
-  propagatedBuildInputs = if stdenv.isDarwin then [ OpenGL ] else [ libGLU ]; # GL/glew.h includes GL/glu.h
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ libXmu libXi libXext ];
+  propagatedBuildInputs = if stdenv.hostPlatform.isDarwin then [ OpenGL ] else [ libGLU ]; # GL/glew.h includes GL/glu.h
 
   cmakeDir = "cmake";
   cmakeFlags = [
diff --git a/pkgs/development/libraries/glib/default.nix b/pkgs/development/libraries/glib/default.nix
index 22df229d47cc..f44b6385b8f1 100644
--- a/pkgs/development/libraries/glib/default.nix
+++ b/pkgs/development/libraries/glib/default.nix
@@ -30,7 +30,7 @@
   stdenv.hostPlatform.isLittleEndian == stdenv.buildPlatform.isLittleEndian
 }:
 
-assert stdenv.isLinux -> util-linuxMinimal != null;
+assert stdenv.hostPlatform.isLinux -> util-linuxMinimal != null;
 
 let
   # Some packages don't get "Cflags" from pkg-config correctly
@@ -68,7 +68,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-JOApxd/JtE5Fc2l63zMHipgnxIk4VVAEs7kJb6TqA08=";
   };
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     ./darwin-compilation.patch
     # FIXME: remove when https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4088 is merged and is in the tagged release
     (fetchpatch {
@@ -142,10 +142,10 @@ stdenv.mkDerivation (finalAttrs: {
     bash gnum4 # install glib-gettextize and m4 macros for other apps to use
   ] ++ lib.optionals (lib.meta.availableOn stdenv.hostPlatform elfutils) [
     elfutils
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libselinux
     util-linuxMinimal # for libmount
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     AppKit Carbon Cocoa CoreFoundation CoreServices Foundation
   ]);
 
@@ -185,7 +185,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-Dtests=${lib.boolToString (!stdenv.hostPlatform.isStatic)}"
   ] ++ lib.optionals (!lib.meta.availableOn stdenv.hostPlatform elfutils) [
     "-Dlibelf=disabled"
-  ] ++ lib.optionals stdenv.isFreeBSD [
+  ] ++ lib.optionals stdenv.hostPlatform.isFreeBSD [
     "-Db_lundef=false"
     "-Dxattr=false"
   ];
@@ -291,7 +291,7 @@ stdenv.mkDerivation (finalAttrs: {
     rm $out/lib/libglib-${librarySuffix}
   '';
 
-  separateDebugInfo = stdenv.isLinux;
+  separateDebugInfo = stdenv.hostPlatform.isLinux;
 
   passthru = rec {
     gioModuleDir = "lib/gio/modules";
diff --git a/pkgs/development/libraries/glibc/common.nix b/pkgs/development/libraries/glibc/common.nix
index be55dd89b7c6..6ab9d2bed560 100644
--- a/pkgs/development/libraries/glibc/common.nix
+++ b/pkgs/development/libraries/glibc/common.nix
@@ -205,7 +205,7 @@ stdenv.mkDerivation ({
 
   env = {
     linuxHeaders = lib.optionalString withLinuxHeaders linuxHeaders;
-    inherit (stdenv) is64bit;
+    inherit (stdenv.hostPlatform) is64bit;
     # Needed to install share/zoneinfo/zone.tab.  Set to impure /bin/sh to
     # prevent a retained dependency on the bootstrap tools in the stdenv-linux
     # bootstrap.
diff --git a/pkgs/development/libraries/glibmm/2.68.nix b/pkgs/development/libraries/glibmm/2.68.nix
index acace1c6a5bf..7662e5f7f190 100644
--- a/pkgs/development/libraries/glibmm/2.68.nix
+++ b/pkgs/development/libraries/glibmm/2.68.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
     glib # for glib-compile-schemas
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ];
 
diff --git a/pkgs/development/libraries/glibmm/default.nix b/pkgs/development/libraries/glibmm/default.nix
index f9f8a4568a57..668f60ec10ec 100644
--- a/pkgs/development/libraries/glibmm/default.nix
+++ b/pkgs/development/libraries/glibmm/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     glib # for glib-compile-schemas
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     Cocoa
   ]);
   propagatedBuildInputs = [ glib libsigcxx ];
diff --git a/pkgs/development/libraries/glog/default.nix b/pkgs/development/libraries/glog/default.nix
index 53377022ad69..ac425092128c 100644
--- a/pkgs/development/libraries/glog/default.nix
+++ b/pkgs/development/libraries/glog/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
         # Clang optimizes an expected allocation away.
         # See https://github.com/google/glog/issues/937
         "DeathNoAllocNewHook.logging"
-      ] ++ lib.optionals stdenv.isDarwin [
+      ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
         "LogBacktraceAt.DoesBacktraceAtRightLineWhenEnabled"
       ];
     in
@@ -51,9 +51,9 @@ stdenv.mkDerivation rec {
 
   checkPhase =
     let
-      excludedTests = lib.optionals stdenv.isDarwin [
+      excludedTests = lib.optionals stdenv.hostPlatform.isDarwin [
         "mock-log"
-      ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+      ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
         "logging"   # works around segfaults on aarch64-darwin for now
       ];
       excludedTestsRegex = lib.optionalString (excludedTests != [ ]) "(${lib.concatStringsSep "|" excludedTests})";
diff --git a/pkgs/development/libraries/gmime/3.nix b/pkgs/development/libraries/gmime/3.nix
index 0d1997cf1afc..f21dd724c95e 100644
--- a/pkgs/development/libraries/gmime/3.nix
+++ b/pkgs/development/libraries/gmime/3.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
       substituteInPlace tests/testsuite.c \
         --replace /bin/rm rm
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # This specific test fails on darwin for some unknown reason
       substituteInPlace tests/test-filters.c \
         --replace-fail 'test_charset_conversion (datadir, "japanese", "utf-8", "iso-2022-jp");' ""
diff --git a/pkgs/development/libraries/gmp/4.3.2.nix b/pkgs/development/libraries/gmp/4.3.2.nix
index e809ed926eda..9d014c266753 100644
--- a/pkgs/development/libraries/gmp/4.3.2.nix
+++ b/pkgs/development/libraries/gmp/4.3.2.nix
@@ -24,13 +24,13 @@ let self = stdenv.mkDerivation rec {
   # addition, `configfsf.guess' would return `i386-apple-darwin10.2.0' on
   # `x86_64-darwin', leading to a 32-bit ABI build, which is undesirable.
   preConfigure =
-    if !stdenv.isDarwin
+    if !stdenv.hostPlatform.isDarwin
     then "ln -sf configfsf.guess config.guess"
     else ''echo "Darwin host is `./config.guess`."'';
 
   configureFlags = [
     (lib.enableFeature cxx "cxx")
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "ac_cv_build=x86_64-apple-darwin13.4.0"
     "ac_cv_host=x86_64-apple-darwin13.4.0"
   ];
@@ -72,7 +72,7 @@ let self = stdenv.mkDerivation rec {
     platforms = lib.platforms.all;
     badPlatforms = [ "x86_64-darwin" ];
     # never built on aarch64-darwin, aarch64-linux since first introduction in nixpkgs
-    broken = (stdenv.isDarwin && stdenv.isAarch64) || (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) || (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   };
 };
   in self
diff --git a/pkgs/development/libraries/gmp/5.1.x.nix b/pkgs/development/libraries/gmp/5.1.x.nix
index e4fb89d054da..43e3ca9759eb 100644
--- a/pkgs/development/libraries/gmp/5.1.x.nix
+++ b/pkgs/development/libraries/gmp/5.1.x.nix
@@ -24,7 +24,7 @@ let self = stdenv.mkDerivation rec {
 
   patches = [
     ./5.1.3-CVE-2021-43618.patch
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ./need-size-t.patch
   ];
 
@@ -36,13 +36,13 @@ let self = stdenv.mkDerivation rec {
     # See <https://hydra.nixos.org/build/2760931>, for instance.
     #
     # no darwin because gmp uses ASM that clang doesn't like
-    (lib.enableFeature (!stdenv.isSunOS && stdenv.hostPlatform.isx86) "fat")
+    (lib.enableFeature (!stdenv.hostPlatform.isSunOS && stdenv.hostPlatform.isx86) "fat")
     # The config.guess in GMP tries to runtime-detect various
     # ARM optimization flags via /proc/cpuinfo (and is also
     # broken on multicore CPUs). Avoid this impurity.
     "--build=${stdenv.buildPlatform.config}"
-  ] ++ optional (cxx && stdenv.isDarwin) "CPPFLAGS=-fexceptions"
-    ++ optional (stdenv.isDarwin && stdenv.is64bit) "ABI=64"
+  ] ++ optional (cxx && stdenv.hostPlatform.isDarwin) "CPPFLAGS=-fexceptions"
+    ++ optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.is64bit) "ABI=64"
     ;
 
   doCheck = true;
@@ -81,7 +81,7 @@ let self = stdenv.mkDerivation rec {
     platforms = platforms.all;
     badPlatforms = [ "x86_64-darwin" ];
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 };
   in self
diff --git a/pkgs/development/libraries/gmp/6.x.nix b/pkgs/development/libraries/gmp/6.x.nix
index 3187b529aa17..e1a8ff0ecdc1 100644
--- a/pkgs/development/libraries/gmp/6.x.nix
+++ b/pkgs/development/libraries/gmp/6.x.nix
@@ -38,13 +38,13 @@ let self = stdenv.mkDerivation rec {
     # See <https://hydra.nixos.org/build/2760931>, for instance.
     #
     # no darwin because gmp uses ASM that clang doesn't like
-    (lib.enableFeature (!stdenv.isSunOS && stdenv.hostPlatform.isx86) "fat")
+    (lib.enableFeature (!stdenv.hostPlatform.isSunOS && stdenv.hostPlatform.isx86) "fat")
     # The config.guess in GMP tries to runtime-detect various
     # ARM optimization flags via /proc/cpuinfo (and is also
     # broken on multicore CPUs). Avoid this impurity.
     "--build=${stdenv.buildPlatform.config}"
-  ] ++ optional (cxx && stdenv.isDarwin) "CPPFLAGS=-fexceptions"
-    ++ optional (stdenv.isDarwin && stdenv.is64bit) "ABI=64"
+  ] ++ optional (cxx && stdenv.hostPlatform.isDarwin) "CPPFLAGS=-fexceptions"
+    ++ optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.is64bit) "ABI=64"
     # to build a .dll on windows, we need --disable-static + --enable-shared
     # see https://gmplib.org/manual/Notes-for-Particular-Systems.html
     ++ optional (!withStatic && stdenv.hostPlatform.isWindows) "--disable-static --enable-shared"
diff --git a/pkgs/development/libraries/gnome-desktop/default.nix b/pkgs/development/libraries/gnome-desktop/default.nix
index db95029c804e..381da5b8f9fd 100644
--- a/pkgs/development/libraries/gnome-desktop/default.nix
+++ b/pkgs/development/libraries/gnome-desktop/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-QsdzdF2EuhS8HPHExvRgYUiAOlzTN5QcY5ZHlfPFnUI=";
   };
 
-  patches = lib.optionals stdenv.isLinux [
+  patches = lib.optionals stdenv.hostPlatform.isLinux [
     (substituteAll {
       src = ./bubblewrap-paths.patch;
       bubblewrap_bin = "${bubblewrap}/bin/bwrap";
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
     gtk3
     gtk4
     glib
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     bubblewrap
     wayland
     libseccomp
@@ -78,12 +78,12 @@ stdenv.mkDerivation rec {
   mesonFlags = [
     "-Dgtk_doc=true"
     "-Ddesktop_docs=false"
-  ] ++ lib.optionals (!stdenv.isLinux) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isLinux) [
     "-Dsystemd=disabled"
     "-Dudev=disabled"
   ];
 
-  separateDebugInfo = stdenv.isLinux;
+  separateDebugInfo = stdenv.hostPlatform.isLinux;
 
   passthru = {
     updateScript = gnome.updateScript {
diff --git a/pkgs/development/libraries/gnome-online-accounts/default.nix b/pkgs/development/libraries/gnome-online-accounts/default.nix
index dc797dd02d16..8a1773612f2d 100644
--- a/pkgs/development/libraries/gnome-online-accounts/default.nix
+++ b/pkgs/development/libraries/gnome-online-accounts/default.nix
@@ -8,7 +8,7 @@
 , ninja
 , libxslt
 , gtk4
-, enableBackend ? stdenv.isLinux
+, enableBackend ? stdenv.hostPlatform.isLinux
 , json-glib
 , libadwaita
 , librest_1_0
diff --git a/pkgs/development/libraries/gnutls/default.nix b/pkgs/development/libraries/gnutls/default.nix
index f1ecc1e9939f..3e9395668c85 100644
--- a/pkgs/development/libraries/gnutls/default.nix
+++ b/pkgs/development/libraries/gnutls/default.nix
@@ -52,7 +52,7 @@ let
 
   # XXX: Gnulib's `test-select' fails on FreeBSD:
   # https://hydra.nixos.org/build/2962084/nixlog/1/raw .
-  doCheck = !stdenv.isFreeBSD && !stdenv.isDarwin
+  doCheck = !stdenv.hostPlatform.isFreeBSD && !stdenv.hostPlatform.isDarwin
     && stdenv.buildPlatform == stdenv.hostPlatform;
 
   inherit (stdenv.hostPlatform) isDarwin;
@@ -100,7 +100,7 @@ stdenv.mkDerivation rec {
     sed 's:/usr/lib64/pkcs11/ /usr/lib/pkcs11/ /usr/lib/x86_64-linux-gnu/pkcs11/:`pkg-config --variable=p11_module_path p11-kit-1`:' -i tests/p11-kit-trust.sh
   '' + lib.optionalString stdenv.hostPlatform.isMusl '' # See https://gitlab.com/gnutls/gnutls/-/issues/945
     sed '2iecho "certtool tests skipped in musl build"\nexit 0' -i tests/cert-tests/certtool.sh
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     sed '2iexit 77' -i tests/{ktls,ktls_keyupdate}.sh
   '';
 
@@ -115,7 +115,7 @@ stdenv.mkDerivation rec {
       "--with-unbound-root-key-file=${dns-root-data}/root.key"
       (lib.withFeature withP11-kit "p11-kit")
       (lib.enableFeature cxxBindings "cxx")
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       "--enable-ktls"
     ] ++ lib.optionals (stdenv.hostPlatform.isMinGW) [
       "--disable-doc"
@@ -127,7 +127,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ lzo lzip libtasn1 libidn2 zlib gmp libunistring unbound gettext libiconv ]
     ++ lib.optional (withP11-kit) p11-kit
-    ++ lib.optional (tpmSupport && stdenv.isLinux) trousers;
+    ++ lib.optional (tpmSupport && stdenv.hostPlatform.isLinux) trousers;
 
   nativeBuildInputs = [ perl pkg-config texinfo ] ++ [ autoconf automake ]
     ++ lib.optionals doCheck [ which nettools util-linux ];
diff --git a/pkgs/development/libraries/gobject-introspection/default.nix b/pkgs/development/libraries/gobject-introspection/default.nix
index d58bdd2e7800..a76764a49a91 100644
--- a/pkgs/development/libraries/gobject-introspection/default.nix
+++ b/pkgs/development/libraries/gobject-introspection/default.nix
@@ -90,7 +90,7 @@ stdenv.mkDerivation (finalAttrs: {
     (python3.withPackages pythonModules)
   ];
 
-  nativeCheckInputs = lib.optionals stdenv.isDarwin [
+  nativeCheckInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     cctools # for otool
   ];
 
@@ -117,7 +117,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-Dgi_cross_use_prebuilt_gi=true"
   ];
 
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
 
   # During configurePhase, two python scripts are generated and need this. See
   # https://github.com/NixOS/nixpkgs/pull/98316#issuecomment-695785692
diff --git a/pkgs/development/libraries/gom/default.nix b/pkgs/development/libraries/gom/default.nix
index 96b1f3ae13ce..0df28ac88dfd 100644
--- a/pkgs/development/libraries/gom/default.nix
+++ b/pkgs/development/libraries/gom/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
   ];
 
   # Success is more likely on x86_64
-  doCheck = stdenv.isx86_64;
+  doCheck = stdenv.hostPlatform.isx86_64;
 
   passthru = {
     updateScript = gnome.updateScript {
diff --git a/pkgs/development/libraries/google-cloud-cpp/default.nix b/pkgs/development/libraries/google-cloud-cpp/default.nix
index 4d8ef6821240..e8caeadcd32d 100644
--- a/pkgs/development/libraries/google-cloud-cpp/default.nix
+++ b/pkgs/development/libraries/google-cloud-cpp/default.nix
@@ -79,7 +79,7 @@ stdenv.mkDerivation rec {
   ];
 
   # https://hydra.nixos.org/build/222679737/nixlog/3/tail
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isAarch64 "-Wno-error=maybe-uninitialized";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isAarch64 "-Wno-error=maybe-uninitialized";
 
   doInstallCheck = true;
 
@@ -100,7 +100,7 @@ stdenv.mkDerivation rec {
         "$PWD/google/cloud/storage/benchmarks"
         "$PWD/google/cloud/testing_util"
       ];
-      ldLibraryPathName = "${lib.optionalString stdenv.isDarwin "DY"}LD_LIBRARY_PATH";
+      ldLibraryPathName = "${lib.optionalString stdenv.hostPlatform.isDarwin "DY"}LD_LIBRARY_PATH";
     in
     lib.optionalString doInstallCheck (
       lib.optionalString (!staticOnly) ''
diff --git a/pkgs/development/libraries/gperftools/default.nix b/pkgs/development/libraries/gperftools/default.nix
index e76c033c705d..62e7ecbb0e95 100644
--- a/pkgs/development/libraries/gperftools/default.nix
+++ b/pkgs/development/libraries/gperftools/default.nix
@@ -31,18 +31,18 @@ stdenv.mkDerivation rec {
 
   # tcmalloc uses libunwind in a way that works correctly only on non-ARM dynamically linked linux
   buildInputs = [ perl ]
-             ++ lib.optional (stdenv.isLinux && !(stdenv.hostPlatform.isAarch || stdenv.hostPlatform.isStatic )) libunwind;
+             ++ lib.optional (stdenv.hostPlatform.isLinux && !(stdenv.hostPlatform.isAarch || stdenv.hostPlatform.isStatic )) libunwind;
 
   # Disable general dynamic TLS on AArch to support dlopen()'ing the library:
   # https://bugzilla.redhat.com/show_bug.cgi?id=1483558
   configureFlags = lib.optional stdenv.hostPlatform.isAarch
     "--disable-general-dynamic-tls";
 
-  prePatch = lib.optionalString stdenv.isDarwin ''
+  prePatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile.am --replace stdc++ c++
   '';
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin
     "-D_XOPEN_SOURCE";
 
   # some packages want to link to the static tcmalloc_minimal
diff --git a/pkgs/development/libraries/gpgme/default.nix b/pkgs/development/libraries/gpgme/default.nix
index fa4bb1be6dd3..45df332bc0ca 100644
--- a/pkgs/development/libraries/gpgme/default.nix
+++ b/pkgs/development/libraries/gpgme/default.nix
@@ -100,7 +100,7 @@ stdenv.mkDerivation rec {
     # which has a path length limit. Nix on darwin is using a build directory
     # that already has quite a long path and the resulting socket path doesn't
     # fit in the limit. https://github.com/NixOS/nix/pull/1085
-    ++ lib.optionals stdenv.isDarwin [ "--disable-gpg-test" ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "--disable-gpg-test" ];
 
   env.NIX_CFLAGS_COMPILE = toString (
     # qgpgme uses Q_ASSERT which retains build inputs at runtime unless
diff --git a/pkgs/development/libraries/graphene/default.nix b/pkgs/development/libraries/graphene/default.nix
index 0364b9ecfaaf..803f31efa47a 100644
--- a/pkgs/development/libraries/graphene/default.nix
+++ b/pkgs/development/libraries/graphene/default.nix
@@ -84,7 +84,7 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.mesonEnable "introspection" withIntrospection)
     "-Dinstalled_test_datadir=${placeholder "installedTests"}/share"
     "-Dinstalled_test_bindir=${placeholder "installedTests"}/libexec"
-  ] ++ lib.optionals stdenv.isAarch32 [
+  ] ++ lib.optionals stdenv.hostPlatform.isAarch32 [
     # the box test is failing with SIGBUS on armv7l-linux
     # https://github.com/ebassi/graphene/issues/215
     "-Darm_neon=false"
diff --git a/pkgs/development/libraries/grpc/default.nix b/pkgs/development/libraries/grpc/default.nix
index 2110755a1719..35ae5284af5a 100644
--- a/pkgs/development/libraries/grpc/default.nix
+++ b/pkgs/development/libraries/grpc/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) grpc;
   propagatedBuildInputs = [ c-ares re2 zlib abseil-cpp ];
   buildInputs = [ openssl protobuf ]
-    ++ lib.optionals stdenv.isLinux [ libnsl ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libnsl ];
 
   cmakeFlags = [
     "-DgRPC_ZLIB_PROVIDER=package"
@@ -91,7 +91,7 @@ stdenv.mkDerivation rec {
 
   env.NIX_CFLAGS_COMPILE = toString ([
     "-Wno-error"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # Workaround for https://github.com/llvm/llvm-project/issues/48757
     "-Wno-elaborated-enum-base"
   ]);
diff --git a/pkgs/development/libraries/gsl-lite/default.nix b/pkgs/development/libraries/gsl-lite/default.nix
index fcab02095264..03fc5587f80a 100644
--- a/pkgs/development/libraries/gsl-lite/default.nix
+++ b/pkgs/development/libraries/gsl-lite/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
     };
 
   # Building tests is broken on Darwin.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = ''
diff --git a/pkgs/development/libraries/gsl/default.nix b/pkgs/development/libraries/gsl/default.nix
index 2211f2d0d99f..aeb95476b2b6 100644
--- a/pkgs/development/libraries/gsl/default.nix
+++ b/pkgs/development/libraries/gsl/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  preConfigure = if (lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11" && stdenv.isDarwin) then ''
+  preConfigure = if (lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11" && stdenv.hostPlatform.isDarwin) then ''
     MACOSX_DEPLOYMENT_TARGET=10.16
   '' else null;
 
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   '';
 
   # do not let -march=skylake to enable FMA (https://lists.gnu.org/archive/html/bug-gsl/2011-11/msg00019.html)
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isx86_64 "-mno-fma";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isx86_64 "-mno-fma";
 
   # https://lists.gnu.org/archive/html/bug-gsl/2015-11/msg00012.html
   doCheck = stdenv.hostPlatform.system != "i686-linux";
diff --git a/pkgs/development/libraries/gsm/default.nix b/pkgs/development/libraries/gsm/default.nix
index ae2c489fe832..5905fdff7e48 100644
--- a/pkgs/development/libraries/gsm/default.nix
+++ b/pkgs/development/libraries/gsm/default.nix
@@ -4,7 +4,7 @@
 }:
 
 let
-  inherit (stdenv) isDarwin;
+  inherit (stdenv.hostPlatform) isDarwin;
   inherit (lib) optional optionalString;
 in
 
diff --git a/pkgs/development/libraries/gss/default.nix b/pkgs/development/libraries/gss/default.nix
index 42d22c2bd5fe..1271c52a4a8c 100644
--- a/pkgs/development/libraries/gss/default.nix
+++ b/pkgs/development/libraries/gss/default.nix
@@ -1,7 +1,7 @@
 { lib
 , stdenv
 , fetchurl
-, withShishi ? !stdenv.isDarwin
+, withShishi ? !stdenv.hostPlatform.isDarwin
 , shishi
 }:
 
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   buildInputs = lib.optional withShishi shishi;
 
   # ./stdint.h:89:5: error: expected value in expression
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export GNULIBHEADERS_OVERRIDE_WINT_T=0
   '';
 
diff --git a/pkgs/development/libraries/gssdp/1.6.nix b/pkgs/development/libraries/gssdp/1.6.nix
index 468c2a84ca28..d52c90b41b91 100644
--- a/pkgs/development/libraries/gssdp/1.6.nix
+++ b/pkgs/development/libraries/gssdp/1.6.nix
@@ -77,7 +77,7 @@ stdenv.mkDerivation rec {
   };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "GObject-based API for handling resource discovery and announcement over SSDP";
     homepage = "http://www.gupnp.org/";
     license = licenses.lgpl2Plus;
diff --git a/pkgs/development/libraries/gssdp/default.nix b/pkgs/development/libraries/gssdp/default.nix
index 939fb0e7b426..c42b6f958092 100644
--- a/pkgs/development/libraries/gssdp/default.nix
+++ b/pkgs/development/libraries/gssdp/default.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation rec {
   ];
 
   # Bail out! GLib-GIO-FATAL-CRITICAL: g_inet_address_to_string: assertion 'G_IS_INET_ADDRESS (address)' failed
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postFixup = lib.optionalString (stdenv.buildPlatform == stdenv.hostPlatform) ''
     # Move developer documentation to devdoc output.
diff --git a/pkgs/development/libraries/gstreamer/bad/default.nix b/pkgs/development/libraries/gstreamer/bad/default.nix
index bf27c6f25d7b..3ab9c896b8bf 100644
--- a/pkgs/development/libraries/gstreamer/bad/default.nix
+++ b/pkgs/development/libraries/gstreamer/bad/default.nix
@@ -104,7 +104,7 @@
 , Foundation
 , MediaToolbox
 , enableGplPlugins ? true
-, bluezSupport ? stdenv.isLinux
+, bluezSupport ? stdenv.hostPlatform.isLinux
 # Causes every application using GstDeviceMonitor to send mDNS queries every 2 seconds
 , microdnsSupport ? false
 # Checks meson.is_cross_build(), so even canExecute isn't enough.
@@ -142,7 +142,7 @@ stdenv.mkDerivation rec {
     gobject-introspection
   ] ++ lib.optionals enableDocumentation [
     hotdoc
-  ] ++ lib.optionals (gst-plugins-base.waylandEnabled && stdenv.isLinux) [
+  ] ++ lib.optionals (gst-plugins-base.waylandEnabled && stdenv.hostPlatform.isLinux) [
     wayland-scanner
   ];
 
@@ -214,11 +214,11 @@ stdenv.mkDerivation rec {
     libmicrodns
   ] ++ lib.optionals openh264Support [
     openh264
-  ] ++ lib.optionals (gst-plugins-base.waylandEnabled && stdenv.isLinux) [
+  ] ++ lib.optionals (gst-plugins-base.waylandEnabled && stdenv.hostPlatform.isLinux) [
     libva # vaapi requires libva -> libdrm -> libpciaccess, which is Linux-only in nixpkgs
     wayland
     wayland-protocols
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     # TODO: mjpegtools uint64_t is not compatible with guint64 on Darwin
     mjpegtools
 
@@ -245,9 +245,9 @@ stdenv.mkDerivation rec {
     libGLU
   ] ++ lib.optionals guiSupport [
     gtk3
-  ] ++ lib.optionals (stdenv.isLinux && guiSupport) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && guiSupport) [
     directfb
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # For unknown reasons the order is important, e.g. if
     # VideoToolbox is last, we get:
     #     fatal error: 'VideoToolbox/VideoToolbox.h' file not found
@@ -306,14 +306,14 @@ stdenv.mkDerivation rec {
     (lib.mesonEnable "openh264" openh264Support)
     (lib.mesonEnable "doc" enableDocumentation)
   ]
-  ++ lib.optionals (!stdenv.isLinux) [
+  ++ lib.optionals (!stdenv.hostPlatform.isLinux) [
     "-Ddoc=disabled" # needs gstcuda to be enabled which is Linux-only
     "-Dnvcodec=disabled" # Linux-only
-  ] ++ lib.optionals (!stdenv.isLinux || !gst-plugins-base.waylandEnabled) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isLinux || !gst-plugins-base.waylandEnabled) [
     "-Dva=disabled" # see comment on `libva` in `buildInputs`
-  ] ++ lib.optionals (!stdenv.isLinux || !guiSupport) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isLinux || !guiSupport) [
     "-Ddirectfb=disabled"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-Daja=disabled"
     "-Dchromaprint=disabled"
     "-Dflite=disabled"
@@ -327,7 +327,7 @@ stdenv.mkDerivation rec {
     "-Duvch264=disabled" # requires gudev
     "-Dv4l2codecs=disabled" # requires gudev
     "-Dladspa=disabled" # requires lrdf
-  ] ++ lib.optionals (!stdenv.isLinux || !stdenv.isx86_64 || !gst-plugins-base.waylandEnabled) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isLinux || !stdenv.hostPlatform.isx86_64 || !gst-plugins-base.waylandEnabled) [
     "-Dqsv=disabled" # Linux (and Windows) x86 only, makes va required
   ] ++ lib.optionals (!gst-plugins-base.glEnabled) [
     "-Dgl=disabled"
diff --git a/pkgs/development/libraries/gstreamer/base/default.nix b/pkgs/development/libraries/gstreamer/base/default.nix
index 3d55425190f6..9932c37a72f2 100644
--- a/pkgs/development/libraries/gstreamer/base/default.nix
+++ b/pkgs/development/libraries/gstreamer/base/default.nix
@@ -20,23 +20,23 @@
 , tremor # provides 'virbisidec'
 , libGL
 , gobject-introspection
-, enableX11 ? stdenv.isLinux
+, enableX11 ? stdenv.hostPlatform.isLinux
 , libXext
 , libXi
 , libXv
 , libdrm
-, enableWayland ? stdenv.isLinux
+, enableWayland ? stdenv.hostPlatform.isLinux
 , wayland-scanner
 , wayland
 , wayland-protocols
-, enableAlsa ? stdenv.isLinux
+, enableAlsa ? stdenv.hostPlatform.isLinux
 , alsa-lib
 # TODO: fix once x86_64-darwin sdk updated
-, enableCocoa ? (stdenv.isDarwin && stdenv.isAarch64)
+, enableCocoa ? (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)
 , Cocoa
 , OpenGL
 , enableGl ? (enableX11 || enableWayland || enableCocoa)
-, enableCdparanoia ? (!stdenv.isDarwin)
+, enableCdparanoia ? (!stdenv.hostPlatform.isDarwin)
 , cdparanoia
 , glib
 , testers
@@ -91,11 +91,11 @@ stdenv.mkDerivation (finalAttrs: {
     libjpeg
     tremor
     pango
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libdrm
     libGL
     libvisual
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     OpenGL
   ] ++ lib.optionals enableAlsa [
     alsa-lib
@@ -111,7 +111,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   propagatedBuildInputs = [
     gstreamer
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libdrm
   ];
 
@@ -128,7 +128,7 @@ stdenv.mkDerivation (finalAttrs: {
   ++ lib.optional (!enableGl) "-Dgl=disabled"
   ++ lib.optional (!enableAlsa) "-Dalsa=disabled"
   ++ lib.optional (!enableCdparanoia) "-Dcdparanoia=disabled"
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-Ddrm=disabled"
     "-Dlibvisual=disabled"
   ];
diff --git a/pkgs/development/libraries/gstreamer/core/default.nix b/pkgs/development/libraries/gstreamer/core/default.nix
index d1094cfc8794..7eba093ab94b 100644
--- a/pkgs/development/libraries/gstreamer/core/default.nix
+++ b/pkgs/development/libraries/gstreamer/core/default.nix
@@ -64,7 +64,7 @@ stdenv.mkDerivation (finalAttrs: {
     glib
     bash-completion
     rustc
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libcap # for setcap binary
   ] ++ lib.optionals withIntrospection [
     gobject-introspection
@@ -74,13 +74,13 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [
     bash-completion
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libcap
   ] ++ lib.optionals (lib.meta.availableOn stdenv.hostPlatform elfutils) [
     elfutils
   ] ++ lib.optionals withLibunwind [
     libunwind
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
     CoreServices
   ];
diff --git a/pkgs/development/libraries/gstreamer/good/default.nix b/pkgs/development/libraries/gstreamer/good/default.nix
index 40c9cbc769c0..ec474972ef52 100644
--- a/pkgs/development/libraries/gstreamer/good/default.nix
+++ b/pkgs/development/libraries/gstreamer/good/default.nix
@@ -39,9 +39,9 @@
 , qt6Support ? false, qt6
 , raspiCameraSupport ? false, libraspberrypi
 , enableJack ? true, libjack2
-, enableX11 ? stdenv.isLinux, xorg
+, enableX11 ? stdenv.hostPlatform.isLinux, xorg
 , ncurses
-, enableWayland ? stdenv.isLinux
+, enableWayland ? stdenv.hostPlatform.isLinux
 , wayland
 , wayland-protocols
 , libgudev
@@ -54,7 +54,7 @@
 
 # MMAL is not supported on aarch64, see:
 # https://github.com/raspberrypi/userland/issues/688
-assert raspiCameraSupport -> (stdenv.isLinux && stdenv.isAarch32);
+assert raspiCameraSupport -> (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch32);
 
 stdenv.mkDerivation rec {
   pname = "gst-plugins-good";
@@ -147,9 +147,9 @@ stdenv.mkDerivation rec {
     qtbase
     qtdeclarative
     qtwayland
-  ]) ++ lib.optionals stdenv.isDarwin [
+  ]) ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libdrm
     libGL
     libv4l
@@ -177,7 +177,7 @@ stdenv.mkDerivation rec {
     "-Dximagesrc=disabled" # Linux-only
   ] ++ lib.optionals (!enableJack) [
     "-Djack=disabled"
-  ] ++ lib.optionals (!stdenv.isLinux) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isLinux) [
     "-Ddv1394=disabled" # Linux only
     "-Doss4=disabled" # Linux only
     "-Doss=disabled" # Linux only
diff --git a/pkgs/development/libraries/gstreamer/rs/default.nix b/pkgs/development/libraries/gstreamer/rs/default.nix
index 3e8eec7b8a60..187d1a048697 100644
--- a/pkgs/development/libraries/gstreamer/rs/default.nix
+++ b/pkgs/development/libraries/gstreamer/rs/default.nix
@@ -57,15 +57,15 @@ let
     mp4 = [ ];
 
     # net
-    aws = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+    aws = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
     hlssink3 = [ ];
     ndi = [ ];
     onvif = [ pango ];
     raptorq = [ ];
-    reqwest = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+    reqwest = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
     rtp = [ ];
-    webrtc = [ gst-plugins-bad openssl ] ++ lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
-    webrtchttp = [ gst-plugins-bad openssl ] ++ lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+    webrtc = [ gst-plugins-bad openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
+    webrtchttp = [ gst-plugins-bad openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
     # text
     textahead = [ ];
@@ -110,9 +110,9 @@ let
     [
       "csound" # tests have weird failure on x86, does not currently work on arm or darwin
       "livesync" # tests have suspicious intermittent failure, see https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/issues/357
-    ] ++ lib.optionals stdenv.isAarch64 [
+    ] ++ lib.optionals stdenv.hostPlatform.isAarch64 [
       "raptorq" # pointer alignment failure in tests on aarch64
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "reqwest" # tests hang on darwin
       "threadshare" # tests cannot bind to localhost on darwin
       "webp" # not supported on darwin (upstream crate issue)
@@ -200,13 +200,13 @@ stdenv.mkDerivation (finalAttrs: {
     cargo
     cargo-c'
     nasm
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     lld
   ] ++ lib.optionals enableDocumentation [
     hotdoc
   ];
 
-  env = lib.optionalAttrs stdenv.isDarwin { NIX_CFLAGS_LINK = "-fuse-ld=lld"; };
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin { NIX_CFLAGS_LINK = "-fuse-ld=lld"; };
 
   buildInputs = [
     gstreamer
diff --git a/pkgs/development/libraries/gstreamer/ugly/default.nix b/pkgs/development/libraries/gstreamer/ugly/default.nix
index 6f8ac715af50..f6a0ee93d89e 100644
--- a/pkgs/development/libraries/gstreamer/ugly/default.nix
+++ b/pkgs/development/libraries/gstreamer/ugly/default.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
     libmad
     libmpeg2
     x264
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     IOKit
     CoreFoundation
     DiskArbitration
diff --git a/pkgs/development/libraries/gstreamer/vaapi/default.nix b/pkgs/development/libraries/gstreamer/vaapi/default.nix
index db154403ffb3..d7d788787a50 100644
--- a/pkgs/development/libraries/gstreamer/vaapi/default.nix
+++ b/pkgs/development/libraries/gstreamer/vaapi/default.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
     xorg.libICE
     nasm
     libvpx
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libGL
     libGLU
   ];
diff --git a/pkgs/development/libraries/gthree/default.nix b/pkgs/development/libraries/gthree/default.nix
index 3657f62f929c..c94a3ae15d15 100644
--- a/pkgs/development/libraries/gthree/default.nix
+++ b/pkgs/development/libraries/gthree/default.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation rec {
   ];
 
   mesonFlags = [
-    "-Dgtk_doc=${if stdenv.isDarwin then "false" else "true"}"
+    "-Dgtk_doc=${if stdenv.hostPlatform.isDarwin then "false" else "true"}"
     # Data for examples is useless when the example programs are not installed.
     "-Dexamples=false"
   ];
@@ -69,6 +69,6 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     maintainers = [ ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/gthree.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/gthree.x86_64-darwin
   };
 }
diff --git a/pkgs/development/libraries/gtk-frdp/default.nix b/pkgs/development/libraries/gtk-frdp/default.nix
index b3edf0ba4853..69af8b31872e 100644
--- a/pkgs/development/libraries/gtk-frdp/default.nix
+++ b/pkgs/development/libraries/gtk-frdp/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
     };
   };
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-DTARGET_OS_IPHONE=0"
     "-DTARGET_OS_WATCH=0"
   ]);
diff --git a/pkgs/development/libraries/gtk/2.x.nix b/pkgs/development/libraries/gtk/2.x.nix
index ed0900ee1a92..cb4b6955dea4 100644
--- a/pkgs/development/libraries/gtk/2.x.nix
+++ b/pkgs/development/libraries/gtk/2.x.nix
@@ -25,9 +25,9 @@
 , testers
 , AppKit
 , Cocoa
-, gdktarget ? if stdenv.isDarwin then "quartz" else "x11"
-, cupsSupport ? config.gtk2.cups or stdenv.isLinux
-, xineramaSupport ? stdenv.isLinux
+, gdktarget ? if stdenv.hostPlatform.isDarwin then "quartz" else "x11"
+, cupsSupport ? config.gtk2.cups or stdenv.hostPlatform.isLinux
+, xineramaSupport ? stdenv.hostPlatform.isLinux
 }:
 
 let
@@ -70,7 +70,7 @@ stdenv.mkDerivation (finalAttrs: {
       url = "https://gitlab.gnome.org/GNOME/gtk/-/commit/3bbf0b6176d42836d23c36a6ac410e807ec0a7a7.patch";
       hash = "sha256-mstOPk9NNpUwScrdEbvGhmAv8jlds3SBdj53T0q33vM=";
     })
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ./patches/2.0-gnome_bugzilla_557780_306776_freeciv_darwin.patch
     ./patches/2.0-darwin-x11.patch
     # Fixes an incompatible function pointer conversion and implicit int errors with clang 16.
@@ -83,7 +83,7 @@ stdenv.mkDerivation (finalAttrs: {
     gdk-pixbuf
     glib
     pango
-  ] ++ lib.optionals (stdenv.isLinux || stdenv.isDarwin) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isDarwin) [
     libXcomposite
     libXcursor
     libXi
@@ -91,14 +91,14 @@ stdenv.mkDerivation (finalAttrs: {
     libXrender
   ] ++ lib.optional xineramaSupport libXinerama
   ++ lib.optional cupsSupport cups
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libXdamage
     AppKit
     Cocoa
   ];
 
   preConfigure =
-    lib.optionalString (stdenv.isDarwin
+    lib.optionalString (stdenv.hostPlatform.isDarwin
                         && lib.versionAtLeast
                           stdenv.hostPlatform.darwinMinVersion "11")
       "MACOSX_DEPLOYMENT_TARGET=10.16";
@@ -107,7 +107,7 @@ stdenv.mkDerivation (finalAttrs: {
     "--sysconfdir=/etc"
     "--with-gdktarget=${gdktarget}"
     "--with-xinput=yes"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--disable-glibtest"
     "--disable-introspection"
     "--disable-visibility"
diff --git a/pkgs/development/libraries/gtk/3.x.nix b/pkgs/development/libraries/gtk/3.x.nix
index ed0612bf2ecb..7f3717c8a525 100644
--- a/pkgs/development/libraries/gtk/3.x.nix
+++ b/pkgs/development/libraries/gtk/3.x.nix
@@ -33,15 +33,15 @@
 , gnome
 , gsettings-desktop-schemas
 , sassc
-, trackerSupport ? stdenv.isLinux && (stdenv.buildPlatform == stdenv.hostPlatform)
+, trackerSupport ? stdenv.hostPlatform.isLinux && (stdenv.buildPlatform == stdenv.hostPlatform)
 , tracker
-, x11Support ? stdenv.isLinux
-, waylandSupport ? stdenv.isLinux
+, x11Support ? stdenv.hostPlatform.isLinux
+, waylandSupport ? stdenv.hostPlatform.isLinux
 , libGL
 , wayland
 , wayland-protocols
-, xineramaSupport ? stdenv.isLinux
-, cupsSupport ? stdenv.isLinux
+, xineramaSupport ? stdenv.hostPlatform.isLinux
+, cupsSupport ? stdenv.hostPlatform.isLinux
 , cups
 , AppKit
 , Cocoa
@@ -83,7 +83,7 @@ stdenv.mkDerivation (finalAttrs: {
   patches = [
     ./patches/3.0-immodules.cache.patch
     ./patches/3.0-Xft-setting-fallback-compute-DPI-properly.patch
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # X11 module requires <gio/gdesktopappinfo.h> which is not installed on Darwin
     # let’s drop that dependency in similar way to how other parts of the library do it
     # e.g. https://gitlab.gnome.org/GNOME/gtk/blob/3.24.4/gtk/gtk-launch.c#L31-33
@@ -120,7 +120,7 @@ stdenv.mkDerivation (finalAttrs: {
     libxkbcommon
     (libepoxy.override { inherit x11Support; })
     isocodes
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
   ] ++ lib.optionals trackerSupport [
     tracker
@@ -146,7 +146,7 @@ stdenv.mkDerivation (finalAttrs: {
     libXrandr
     libXrender
     pango
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # explicitly propagated, always needed
     Cocoa
     QuartzCore
@@ -166,13 +166,13 @@ stdenv.mkDerivation (finalAttrs: {
     "-Dtracker3=${lib.boolToString trackerSupport}"
     "-Dbroadway_backend=${lib.boolToString broadwaySupport}"
     "-Dx11_backend=${lib.boolToString x11Support}"
-    "-Dquartz_backend=${lib.boolToString (stdenv.isDarwin && !x11Support)}"
+    "-Dquartz_backend=${lib.boolToString (stdenv.hostPlatform.isDarwin && !x11Support)}"
     "-Dintrospection=${lib.boolToString withIntrospection}"
   ];
 
   doCheck = false; # needs X11
 
-  separateDebugInfo = stdenv.isLinux;
+  separateDebugInfo = stdenv.hostPlatform.isLinux;
 
   # These are the defines that'd you'd get with --enable-debug=minimum (default).
   # See: https://developer.gnome.org/gtk3/stable/gtk-building.html#extra-configuration-options
@@ -202,7 +202,7 @@ stdenv.mkDerivation (finalAttrs: {
     patchShebangs ''${files[@]}
   '';
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     # The updater is needed for nixos env and it's tiny.
     moveToOutput bin/gtk-update-icon-cache "$out"
     # Launcher
@@ -219,14 +219,14 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   # Wrap demos
-  postFixup =  lib.optionalString (!stdenv.isDarwin) ''
+  postFixup =  lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     demos=(gtk3-demo gtk3-demo-application gtk3-icon-browser gtk3-widget-factory)
 
     for program in ''${demos[@]}; do
       wrapProgram $dev/bin/$program \
         --prefix XDG_DATA_DIRS : "$GSETTINGS_SCHEMAS_PATH:$out/share/gsettings-schemas/${finalAttrs.pname}-${finalAttrs.version}"
     done
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # a comment created a cycle between outputs
     sed '/^# ModulesPath =/d' -i "$out"/lib/gtk-*/*/immodules.cache
   '';
diff --git a/pkgs/development/libraries/gtk/4.x.nix b/pkgs/development/libraries/gtk/4.x.nix
index 3a144b2de3ac..8b3ef020bd28 100644
--- a/pkgs/development/libraries/gtk/4.x.nix
+++ b/pkgs/development/libraries/gtk/4.x.nix
@@ -32,13 +32,13 @@
 , gsettings-desktop-schemas
 , gst_all_1
 , sassc
-, trackerSupport ? stdenv.isLinux
+, trackerSupport ? stdenv.hostPlatform.isLinux
 , tracker
-, x11Support ? stdenv.isLinux
-, waylandSupport ? stdenv.isLinux
+, x11Support ? stdenv.hostPlatform.isLinux
+, waylandSupport ? stdenv.hostPlatform.isLinux
 , libGL
 # experimental and can cause crashes in inspector
-, vulkanSupport ? stdenv.isLinux
+, vulkanSupport ? stdenv.hostPlatform.isLinux
 , shaderc
 , vulkan-loader
 , vulkan-headers
@@ -46,8 +46,8 @@
 , wayland
 , wayland-protocols
 , wayland-scanner
-, xineramaSupport ? stdenv.isLinux
-, cupsSupport ? stdenv.isLinux
+, xineramaSupport ? stdenv.hostPlatform.isLinux
+, cupsSupport ? stdenv.hostPlatform.isLinux
 , compileSchemas ? stdenv.hostPlatform.emulatorAvailable buildPackages
 , cups
 , AppKit
@@ -130,7 +130,7 @@ stdenv.mkDerivation (finalAttrs: {
     libXi
     libXrandr
     libXrender
-  ]) ++ lib.optionals stdenv.isDarwin [
+  ]) ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
   ] ++ lib.optionals trackerSupport [
     tracker
@@ -142,7 +142,7 @@ stdenv.mkDerivation (finalAttrs: {
     xorg.libXinerama
   ] ++ lib.optionals cupsSupport [
     cups
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ] ++ lib.optionals stdenv.hostPlatform.isMusl [
     libexecinfo
@@ -175,13 +175,13 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.mesonEnable "vulkan" vulkanSupport)
     (lib.mesonEnable "print-cups" cupsSupport)
     (lib.mesonBool "x11-backend" x11Support)
-  ] ++ lib.optionals (stdenv.isDarwin && !stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isAarch64) [
     "-Dmedia-gstreamer=disabled" # requires gstreamer-gl
   ];
 
   doCheck = false; # needs X11
 
-  separateDebugInfo = stdenv.isLinux;
+  separateDebugInfo = stdenv.hostPlatform.isLinux;
 
   # These are the defines that'd you'd get with --enable-debug=minimum (default).
   # See: https://developer.gnome.org/gtk3/stable/gtk-building.html#extra-configuration-options
@@ -218,7 +218,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   postInstall = ''
     PATH="$OLD_PATH"
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     # The updater is needed for nixos env and it's tiny.
     moveToOutput bin/gtk4-update-icon-cache "$out"
     # Launcher
@@ -234,7 +234,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   # Wrap demos
-  postFixup =  lib.optionalString (!stdenv.isDarwin) ''
+  postFixup =  lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     demos=(gtk4-demo gtk4-demo-application gtk4-icon-browser gtk4-widget-factory)
 
     for program in ''${demos[@]}; do
diff --git a/pkgs/development/libraries/gtkmm/4.x.nix b/pkgs/development/libraries/gtkmm/4.x.nix
index 36ff98d9f165..64ec9e9ac2c9 100644
--- a/pkgs/development/libraries/gtkmm/4.x.nix
+++ b/pkgs/development/libraries/gtkmm/4.x.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
     pangomm_2_48
   ];
 
-  nativeCheckInputs = lib.optionals (!stdenv.isDarwin)[
+  nativeCheckInputs = lib.optionals (!stdenv.hostPlatform.isDarwin)[
     xvfb-run
   ];
 
@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
   checkPhase = ''
     runHook preCheck
 
-    ${lib.optionalString (!stdenv.isDarwin) "xvfb-run -s '-screen 0 800x600x24'"} \
+    ${lib.optionalString (!stdenv.hostPlatform.isDarwin) "xvfb-run -s '-screen 0 800x600x24'"} \
       meson test --print-errorlogs
 
     runHook postCheck
diff --git a/pkgs/development/libraries/gtksourceview/3.x.nix b/pkgs/development/libraries/gtksourceview/3.x.nix
index fb5c72e8b34d..41999f553826 100644
--- a/pkgs/development/libraries/gtksourceview/3.x.nix
+++ b/pkgs/development/libraries/gtksourceview/3.x.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   enableParallelBuilding = true;
 
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
   checkPhase = ''
     NO_AT_BRIDGE=1 \
     XDG_DATA_DIRS="$XDG_DATA_DIRS:${shared-mime-info}/share" \
diff --git a/pkgs/development/libraries/gtksourceview/5.x.nix b/pkgs/development/libraries/gtksourceview/5.x.nix
index f1a12eb0de12..a57881ff5532 100644
--- a/pkgs/development/libraries/gtksourceview/5.x.nix
+++ b/pkgs/development/libraries/gtksourceview/5.x.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   # The 10.12 SDK used by x86_64-darwin requires defining `_POSIX_C_SOURCE` to use `strnlen`.
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) "-D_POSIX_C_SOURCE=200809L";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) "-D_POSIX_C_SOURCE=200809L";
 
   nativeBuildInputs = [
     meson
@@ -79,7 +79,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-Ddocumentation=true"
   ];
 
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
 
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/development/libraries/gupnp/default.nix b/pkgs/development/libraries/gupnp/default.nix
index 08b2925b0ea3..5fa0df314274 100644
--- a/pkgs/development/libraries/gupnp/default.nix
+++ b/pkgs/development/libraries/gupnp/default.nix
@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
   ];
 
   # Bail out! ERROR:../tests/test-bugs.c:168:test_on_timeout: code should not be reached
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   passthru = {
     updateScript = gnome.updateScript {
diff --git a/pkgs/development/libraries/gvfs/default.nix b/pkgs/development/libraries/gvfs/default.nix
index 7c5cdca3f619..4b4da283dd89 100644
--- a/pkgs/development/libraries/gvfs/default.nix
+++ b/pkgs/development/libraries/gvfs/default.nix
@@ -8,7 +8,7 @@
 , gettext
 , dbus
 , glib
-, udevSupport ? stdenv.isLinux
+, udevSupport ? stdenv.hostPlatform.isLinux
 , libgudev
 , udisks2
 , libgcrypt
diff --git a/pkgs/development/libraries/harfbuzz/default.nix b/pkgs/development/libraries/harfbuzz/default.nix
index 12297a5da669..15208becc301 100644
--- a/pkgs/development/libraries/harfbuzz/default.nix
+++ b/pkgs/development/libraries/harfbuzz/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   postPatch = ''
     patchShebangs src/*.py test
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # ApplicationServices.framework headers have cast-align warnings.
     substituteInPlace src/hb.hh \
       --replace '#pragma GCC diagnostic error   "-Wcast-align"' ""
@@ -94,7 +94,7 @@ stdenv.mkDerivation (finalAttrs: {
   postFixup = lib.optionalString withIcu ''
     rm "$out"/lib/libharfbuzz.* "$dev/lib/pkgconfig/harfbuzz.pc"
     ln -s {'${harfbuzz.dev}',"$dev"}/lib/pkgconfig/harfbuzz.pc
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       ln -s {'${harfbuzz.out}',"$out"}/lib/libharfbuzz.dylib
       ln -s {'${harfbuzz.out}',"$out"}/lib/libharfbuzz.0.dylib
     ''}
diff --git a/pkgs/development/libraries/hidapi/default.nix b/pkgs/development/libraries/hidapi/default.nix
index 05b915efb8f9..6e537e8b74fb 100644
--- a/pkgs/development/libraries/hidapi/default.nix
+++ b/pkgs/development/libraries/hidapi/default.nix
@@ -23,11 +23,11 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ cmake pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ libusb1 udev ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libusb1 udev ];
 
   enableParallelBuilding = true;
 
-  propagatedBuildInputs = lib.optionals stdenv.isDarwin [ Cocoa IOKit ];
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa IOKit ];
 
   passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
 
@@ -37,9 +37,9 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with maintainers; [ prusnak ];
     # You can choose between GPLv3, BSD or HIDAPI license (even more liberal)
     license = with licenses; [ bsd3 /* or */ gpl3Only ] ;
-    pkgConfigModules = lib.optionals stdenv.isDarwin [
+    pkgConfigModules = lib.optionals stdenv.hostPlatform.isDarwin [
       "hidapi"
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       "hidapi-hidraw"
       "hidapi-libusb"
     ];
diff --git a/pkgs/development/libraries/hivex/default.nix b/pkgs/development/libraries/hivex/default.nix
index d8e320a44c19..c85790408bdd 100644
--- a/pkgs/development/libraries/hivex/default.nix
+++ b/pkgs/development/libraries/hivex/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
     libxml2
   ]
   ++ (with perlPackages; [ perl IOStringy ])
-  ++ lib.optionals stdenv.isDarwin [ libintl ];
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ libintl ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/http-parser/default.nix b/pkgs/development/libraries/http-parser/default.nix
index 6ba2b8fc1ace..69cf2ab210dd 100644
--- a/pkgs/development/libraries/http-parser/default.nix
+++ b/pkgs/development/libraries/http-parser/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   patches = [
     ./enable-static-shared.patch
-  ] ++ lib.optionals stdenv.isAarch32 [
+  ] ++ lib.optionals stdenv.hostPlatform.isAarch32 [
     # https://github.com/nodejs/http-parser/pull/510
     (fetchpatch {
       url = "https://github.com/nodejs/http-parser/commit/4f15b7d510dc7c6361a26a7c6d2f7c3a17f8d878.patch";
diff --git a/pkgs/development/libraries/hwloc/default.nix b/pkgs/development/libraries/hwloc/default.nix
index f2316ab657a1..f71fa4aca81f 100644
--- a/pkgs/development/libraries/hwloc/default.nix
+++ b/pkgs/development/libraries/hwloc/default.nix
@@ -27,15 +27,15 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ expat ncurses ]
     ++ lib.optionals x11Support [ cairo libX11 ]
-    ++ lib.optionals stdenv.isLinux [ numactl ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ numactl ]
     ++ lib.optionals enableCuda [ cudaPackages.cuda_cudart ];
 
   # Since `libpci' appears in `hwloc.pc', it must be propagated.
-  propagatedBuildInputs = lib.optional stdenv.isLinux pciutils;
+  propagatedBuildInputs = lib.optional stdenv.hostPlatform.isLinux pciutils;
 
   enableParallelBuilding = true;
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     if [ -d "${numactl}/lib64" ]; then
       numalibdir="${numactl}/lib64"
     else
diff --git a/pkgs/development/libraries/hyperscan/default.nix b/pkgs/development/libraries/hyperscan/default.nix
index 0b9765dac4cf..cdb578ba08d5 100644
--- a/pkgs/development/libraries/hyperscan/default.nix
+++ b/pkgs/development/libraries/hyperscan/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation (finalAttrs: {
   cmakeFlags = [
     "-DBUILD_AVX512=ON"
   ]
-  ++ lib.optional (!stdenv.isDarwin) "-DFAT_RUNTIME=ON"
+  ++ lib.optional (!stdenv.hostPlatform.isDarwin) "-DFAT_RUNTIME=ON"
   ++ lib.optional (withStatic) "-DBUILD_STATIC_AND_SHARED=ON"
   ++ lib.optional (!withStatic) "-DBUILD_SHARED_LIBS=ON";
 
diff --git a/pkgs/development/libraries/icu/make-icu.nix b/pkgs/development/libraries/icu/make-icu.nix
index 575f184c163f..52b083995ec7 100644
--- a/pkgs/development/libraries/icu/make-icu.nix
+++ b/pkgs/development/libraries/icu/make-icu.nix
@@ -31,7 +31,7 @@ let
 
       # $(includedir) is different from $(prefix)/include due to multiple outputs
       sed -i -e 's|^\(CPPFLAGS = .*\) -I\$(prefix)/include|\1 -I$(includedir)|' config/Makefile.inc.in
-    '' + lib.optionalString stdenv.isAarch32 ''
+    '' + lib.optionalString stdenv.hostPlatform.isAarch32 ''
       # From https://archlinuxarm.org/packages/armv7h/icu/files/icudata-stdlibs.patch
       sed -e 's/LDFLAGSICUDT=-nodefaultlibs -nostdlib/LDFLAGSICUDT=/' -i config/mh-linux
     '';
@@ -39,7 +39,7 @@ let
     dontDisableStatic = withStatic;
 
     configureFlags = [ "--disable-debug" ]
-      ++ lib.optional (stdenv.isFreeBSD || stdenv.isDarwin) "--enable-rpath"
+      ++ lib.optional (stdenv.hostPlatform.isFreeBSD || stdenv.hostPlatform.isDarwin) "--enable-rpath"
       ++ lib.optional (stdenv.buildPlatform != stdenv.hostPlatform) "--with-cross-build=${nativeBuildRoot}"
       ++ lib.optional withStatic "--enable-static";
 
@@ -74,7 +74,7 @@ let
     postInstall = lib.optionalString withStatic ''
       mkdir -p $static/lib
       mv -v lib/*.a $static/lib
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       sed -i 's/INSTALL_CMD=.*install/INSTALL_CMD=install/' $out/lib/icu/${version}/pkgdata.inc
     '' + (let
       replacements = [
diff --git a/pkgs/development/libraries/igraph/default.nix b/pkgs/development/libraries/igraph/default.nix
index 63ca16e19d7a..0501fe4ac2d3 100644
--- a/pkgs/development/libraries/igraph/default.nix
+++ b/pkgs/development/libraries/igraph/default.nix
@@ -91,7 +91,7 @@ stdenv.mkDerivation (finalAttrs: {
   postFixup = ''
     substituteInPlace $dev/lib/cmake/igraph/igraph-targets.cmake \
       --replace-fail "_IMPORT_PREFIX \"$out\"" "_IMPORT_PREFIX \"$dev\""
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change libblas.dylib ${blas}/lib/libblas.dylib $out/lib/libigraph.dylib
   '';
 
diff --git a/pkgs/development/libraries/ilmbase/default.nix b/pkgs/development/libraries/ilmbase/default.nix
index 219d961f9f96..dc075e43563d 100644
--- a/pkgs/development/libraries/ilmbase/default.nix
+++ b/pkgs/development/libraries/ilmbase/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   # fails 1 out of 1 tests with
   # "lt-ImathTest: testBoxAlgo.cpp:892: void {anonymous}::boxMatrixTransform(): Assertion `b21 == b2' failed"
   # at least on i686. spooky!
-  doCheck = stdenv.isx86_64;
+  doCheck = stdenv.hostPlatform.isx86_64;
 
   preConfigure = ''
     # Need to cd after patches for openexr patches to apply.
diff --git a/pkgs/development/libraries/imgui/default.nix b/pkgs/development/libraries/imgui/default.nix
index 1b33c1c74f2d..315a73171067 100644
--- a/pkgs/development/libraries/imgui/default.nix
+++ b/pkgs/development/libraries/imgui/default.nix
@@ -26,15 +26,15 @@
   IMGUI_BUILD_DX10_BINDING ? false,
   IMGUI_BUILD_DX11_BINDING ? false,
   IMGUI_BUILD_DX12_BINDING ? false,
-  IMGUI_BUILD_GLFW_BINDING ? !stdenv.isDarwin,
+  IMGUI_BUILD_GLFW_BINDING ? !stdenv.hostPlatform.isDarwin,
   IMGUI_BUILD_GLUT_BINDING ? false,
-  IMGUI_BUILD_METAL_BINDING ? stdenv.isDarwin,
+  IMGUI_BUILD_METAL_BINDING ? stdenv.hostPlatform.isDarwin,
   IMGUI_BUILD_OPENGL2_BINDING ? false,
   IMGUI_BUILD_OPENGL3_BINDING ?
     IMGUI_BUILD_SDL2_BINDING || IMGUI_BUILD_GLFW_BINDING || IMGUI_BUILD_GLUT_BINDING,
-  IMGUI_BUILD_OSX_BINDING ? stdenv.isDarwin,
+  IMGUI_BUILD_OSX_BINDING ? stdenv.hostPlatform.isDarwin,
   IMGUI_BUILD_SDL2_BINDING ?
-    !IMGUI_BUILD_GLFW_BINDING && !stdenv.isDarwin,
+    !IMGUI_BUILD_GLFW_BINDING && !stdenv.hostPlatform.isDarwin,
   IMGUI_BUILD_SDL2_RENDERER_BINDING ? IMGUI_BUILD_SDL2_BINDING,
   IMGUI_BUILD_VULKAN_BINDING ? false,
   IMGUI_BUILD_WIN32_BINDING ? false,
diff --git a/pkgs/development/libraries/imlib2/default.nix b/pkgs/development/libraries/imlib2/default.nix
index 6f7a14a61611..cea3f45f9ff6 100644
--- a/pkgs/development/libraries/imlib2/default.nix
+++ b/pkgs/development/libraries/imlib2/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # Do not build amd64 assembly code on Darwin, because it fails to compile
   # with unknow directive errors
-  configureFlags = optional stdenv.isDarwin "--enable-amd64=no"
+  configureFlags = optional stdenv.hostPlatform.isDarwin "--enable-amd64=no"
     ++ optional (!svgSupport) "--without-svg"
     ++ optional (!heifSupport) "--without-heif"
     ++ optional (!x11Support) "--without-x";
diff --git a/pkgs/development/libraries/imtui/default.nix b/pkgs/development/libraries/imtui/default.nix
index a4f477543b89..ac1791126bfd 100644
--- a/pkgs/development/libraries/imtui/default.nix
+++ b/pkgs/development/libraries/imtui/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   buildInputs = lib.optional withEmscripten emscripten
     ++ lib.optional withCurl curl
     ++ lib.optional withNcurses ncurses
-    ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Cocoa;
+    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Cocoa;
 
   postPatch = ''
     cp -r ${imgui.src}/* third-party/imgui/imgui
diff --git a/pkgs/development/libraries/inchi/default.nix b/pkgs/development/libraries/inchi/default.nix
index f74cfdec9305..1c8cca6af715 100644
--- a/pkgs/development/libraries/inchi/default.nix
+++ b/pkgs/development/libraries/inchi/default.nix
@@ -24,14 +24,14 @@ in
       sha256 = "1zbygqn0443p0gxwr4kx3m1bkqaj8x9hrpch3s41py7jq08f6x28";
     };
 
-    nativeBuildInputs = [ unzip ] ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+    nativeBuildInputs = [ unzip ] ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
     outputs = [ "out" "doc" ];
 
     enableParallelBuilding = true;
 
     preConfigure = ''
       cd ./INCHI_API/libinchi/gcc
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace makefile \
         --replace ",--version-script=libinchi.map" "" \
         --replace "LINUX_Z_RELRO = ,-z,relro" "" \
@@ -56,7 +56,7 @@ in
       runHook postInstall
     '';
 
-    preFixup = lib.optionalString stdenv.isDarwin ''
+    preFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
       fixDarwinDylibNames $(find "$out" -name "*.so.*")
     '';
 
diff --git a/pkgs/development/libraries/intel-media-driver/default.nix b/pkgs/development/libraries/intel-media-driver/default.nix
index 5b5cfac9e06b..4803f6ecf360 100644
--- a/pkgs/development/libraries/intel-media-driver/default.nix
+++ b/pkgs/development/libraries/intel-media-driver/default.nix
@@ -8,7 +8,7 @@
 , libpciaccess
 , intel-gmmlib
 , libdrm
-, enableX11 ? stdenv.isLinux
+, enableX11 ? stdenv.hostPlatform.isLinux
 , libX11
   # for passhtru.tests
 , pkgsi686Linux
diff --git a/pkgs/development/libraries/irrlicht/default.nix b/pkgs/development/libraries/irrlicht/default.nix
index fa5d2b3b0c99..6711622a2eb8 100644
--- a/pkgs/development/libraries/irrlicht/default.nix
+++ b/pkgs/development/libraries/irrlicht/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     sed -ie '/sys\/sysctl.h/d' source/Irrlicht/COSOperator.cpp
-  '' + lib.optionalString stdenv.isAarch64 ''
+  '' + lib.optionalString stdenv.hostPlatform.isAarch64 ''
     substituteInPlace source/Irrlicht/Makefile \
       --replace "-DIRRLICHT_EXPORTS=1" "-DIRRLICHT_EXPORTS=1 -DPNG_ARM_NEON_OPT=0"
   '';
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     libGLU libGL libXrandr libX11 libXxf86vm
-  ] ++ lib.optional stdenv.isAarch64 zlib;
+  ] ++ lib.optional stdenv.hostPlatform.isAarch64 zlib;
 
   meta = {
     homepage = "https://irrlicht.sourceforge.io/";
diff --git a/pkgs/development/libraries/isa-l/default.nix b/pkgs/development/libraries/isa-l/default.nix
index 9a112fb1c4d9..6ae04b0b267d 100644
--- a/pkgs/development/libraries/isa-l/default.nix
+++ b/pkgs/development/libraries/isa-l/default.nix
@@ -24,6 +24,6 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/intel/isa-l";
     maintainers = with maintainers; [ jbedo ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin && stdenv.isAarch64; # does not build on M1 mac (asm/hwcap.h file not found) maybe needs gcc not clang?
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64; # does not build on M1 mac (asm/hwcap.h file not found) maybe needs gcc not clang?
   };
 }
diff --git a/pkgs/development/libraries/itk/generic.nix b/pkgs/development/libraries/itk/generic.nix
index 808bac76e861..d4ece7d311ec 100644
--- a/pkgs/development/libraries/itk/generic.nix
+++ b/pkgs/development/libraries/itk/generic.nix
@@ -147,7 +147,7 @@ stdenv.mkDerivation {
       libX11
       libuuid
     ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ]
     ++ lib.optionals enablePython [ python ]
     ++ lib.optionals withVtk [ vtk ];
   # Due to ITKVtkGlue=ON and the additional dependencies needed to configure VTK 9
diff --git a/pkgs/development/libraries/jabcode/default.nix b/pkgs/development/libraries/jabcode/default.nix
index 1fc0e6fd0886..d735937b934d 100644
--- a/pkgs/development/libraries/jabcode/default.nix
+++ b/pkgs/development/libraries/jabcode/default.nix
@@ -46,6 +46,6 @@ stdenv.mkDerivation rec {
     license = licenses.lgpl21;
     maintainers = [ maintainers.xaverdh ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/jabcode.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/jabcode.x86_64-darwin
   };
 }
diff --git a/pkgs/development/libraries/java/jffi/default.nix b/pkgs/development/libraries/java/jffi/default.nix
index dddcfd1fa303..fe5a0c553546 100644
--- a/pkgs/development/libraries/java/jffi/default.nix
+++ b/pkgs/development/libraries/java/jffi/default.nix
@@ -64,7 +64,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Java Foreign Function Interface";
     homepage = "https://github.com/jnr/jffi";
     platforms = platforms.unix;
diff --git a/pkgs/development/libraries/jemalloc/default.nix b/pkgs/development/libraries/jemalloc/default.nix
index 7541e6b0c1a3..9d3bfd1d9a64 100644
--- a/pkgs/development/libraries/jemalloc/default.nix
+++ b/pkgs/development/libraries/jemalloc/default.nix
@@ -41,19 +41,19 @@ stdenv.mkDerivation rec {
     # jemalloc is unable to correctly detect transparent hugepage support on
     # ARM (https://github.com/jemalloc/jemalloc/issues/526), and the default
     # kernel ARMv6/7 kernel does not enable it, so we explicitly disable support
-    ++ lib.optionals (stdenv.isAarch32 && lib.versionOlder version "5") [
+    ++ lib.optionals (stdenv.hostPlatform.isAarch32 && lib.versionOlder version "5") [
       "--disable-thp"
       "je_cv_thp=no"
     ]
     # AArch64 has configurable page size up to 64k. The default configuration
     # for jemalloc only supports 4k page sizes.
-    ++ lib.optional stdenv.isAarch64 "--with-lg-page=16"
+    ++ lib.optional stdenv.hostPlatform.isAarch64 "--with-lg-page=16"
     # See https://github.com/jemalloc/jemalloc/issues/1997
     # Using a value of 48 should work on both emulated and native x86_64-darwin.
-    ++ lib.optional (stdenv.isDarwin && stdenv.isx86_64) "--with-lg-vaddr=48"
+    ++ lib.optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) "--with-lg-vaddr=48"
   ;
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-error=array-bounds";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-error=array-bounds";
 
   # Tries to link test binaries binaries dynamically and fails
   doCheck = !stdenv.hostPlatform.isStatic;
diff --git a/pkgs/development/libraries/kde-frameworks/kauth/default.nix b/pkgs/development/libraries/kde-frameworks/kauth/default.nix
index 0ad7cfbbb7e1..4e9a2a465214 100644
--- a/pkgs/development/libraries/kde-frameworks/kauth/default.nix
+++ b/pkgs/development/libraries/kde-frameworks/kauth/default.nix
@@ -1,7 +1,7 @@
 {
   lib, stdenv, mkDerivation, propagate,
   extra-cmake-modules, kcoreaddons, qttools,
-  enablePolkit ? stdenv.isLinux, polkit-qt
+  enablePolkit ? stdenv.hostPlatform.isLinux, polkit-qt
 }:
 
 mkDerivation {
diff --git a/pkgs/development/libraries/kde-frameworks/kdoctools/default.nix b/pkgs/development/libraries/kde-frameworks/kdoctools/default.nix
index 4b52cd95b710..d40c5a0a95e2 100644
--- a/pkgs/development/libraries/kde-frameworks/kdoctools/default.nix
+++ b/pkgs/development/libraries/kde-frameworks/kdoctools/default.nix
@@ -22,7 +22,7 @@ mkDerivation {
   outputs = [ "out" "dev" ];
   patches = [ ./kdoctools-no-find-docbook-xml.patch ]
     # kf.doctools.core: Error: Could not find kdoctools catalogs
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     (fetchpatch {
       name = "kdoctools-relocate-datapath.patch";
       url = "https://github.com/msys2/MINGW-packages/raw/0900785a1f4e4146ab9561fb92a1c70fa70fcfc4/mingw-w64-kdoctools-qt5/0001-kdoctools-relocate-datapath.patch";
diff --git a/pkgs/development/libraries/kde-frameworks/kfilemetadata/default.nix b/pkgs/development/libraries/kde-frameworks/kfilemetadata/default.nix
index 1bd1f115c6cb..32d01b261488 100644
--- a/pkgs/development/libraries/kde-frameworks/kfilemetadata/default.nix
+++ b/pkgs/development/libraries/kde-frameworks/kfilemetadata/default.nix
@@ -18,7 +18,7 @@
 mkDerivation {
   pname = "kfilemetadata";
   nativeBuildInputs = [ extra-cmake-modules ];
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     attr
   ] ++ [
     ebook_tools
diff --git a/pkgs/development/libraries/kde-frameworks/kinit/default.nix b/pkgs/development/libraries/kde-frameworks/kinit/default.nix
index 1f2620c5664d..fb18cfb287e7 100644
--- a/pkgs/development/libraries/kde-frameworks/kinit/default.nix
+++ b/pkgs/development/libraries/kde-frameworks/kinit/default.nix
@@ -21,7 +21,7 @@ mkDerivation {
   CXXFLAGS = [
     ''-DNIXPKGS_KF5_KIOCORE=\"${getLib kio}/lib/libKF5KIOCore.so.5\"''
     ''-DNIXPKGS_KF5_PARTS=\"${getLib kparts}/lib/libKF5Parts.so.5\"''
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     ''-DNIXPKGS_KF5_PLASMA=\"${getLib plasma-framework}/lib/libKF5Plasma.so.5\"''
   ];
   setupHook = writeScript "setup-hook.sh" ''
diff --git a/pkgs/development/libraries/kde-frameworks/kio/default.nix b/pkgs/development/libraries/kde-frameworks/kio/default.nix
index 522c27bf56eb..89f341f9977a 100644
--- a/pkgs/development/libraries/kde-frameworks/kio/default.nix
+++ b/pkgs/development/libraries/kde-frameworks/kio/default.nix
@@ -15,14 +15,14 @@ mkDerivation {
     karchive kconfigwidgets kdbusaddons ki18n kiconthemes knotifications
     ktextwidgets kwallet kwidgetsaddons kwindowsystem qtscript qtx11extras
     kcrash libkrb5
-  ] ++ lib.lists.optionals stdenv.isLinux [
+  ] ++ lib.lists.optionals stdenv.hostPlatform.isLinux [
     acl attr # both are needed for ACL support
     util-linux # provides libmount
   ];
   propagatedBuildInputs = [
     kbookmarks kcompletion kconfig kcoreaddons kitemviews kjobwidgets kservice
     kxmlgui qtbase qttools solid
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     kded
   ];
   outputs = [ "out" "dev" ];
diff --git a/pkgs/development/libraries/kde-frameworks/knotifications.nix b/pkgs/development/libraries/kde-frameworks/knotifications.nix
index 5284d673d89e..d9d5a6f70380 100644
--- a/pkgs/development/libraries/kde-frameworks/knotifications.nix
+++ b/pkgs/development/libraries/kde-frameworks/knotifications.nix
@@ -11,7 +11,7 @@ mkDerivation {
   nativeBuildInputs = [ extra-cmake-modules qttools ];
   buildInputs = [
     kcodecs kconfig kcoreaddons kwindowsystem libdbusmenu phonon qtx11extras
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     qtmacextras
   ];
 }
diff --git a/pkgs/development/libraries/kde-frameworks/ktexteditor.nix b/pkgs/development/libraries/kde-frameworks/ktexteditor.nix
index ccc9f76b237a..23abe70fed05 100644
--- a/pkgs/development/libraries/kde-frameworks/ktexteditor.nix
+++ b/pkgs/development/libraries/kde-frameworks/ktexteditor.nix
@@ -15,7 +15,7 @@ mkDerivation ({
     editorconfig-core-c
   ];
   propagatedBuildInputs = [ kparts ];
-} // lib.optionalAttrs stdenv.isDarwin {
+} // lib.optionalAttrs stdenv.hostPlatform.isDarwin {
   postPatch = ''
     substituteInPlace src/part/CMakeLists.txt \
       --replace "kpart.desktop" "${kparts}/share/kservicetypes5/kpart.desktop"
diff --git a/pkgs/development/libraries/kde-frameworks/solid/default.nix b/pkgs/development/libraries/kde-frameworks/solid/default.nix
index 27160c3bda0d..e26f8bfa9a62 100644
--- a/pkgs/development/libraries/kde-frameworks/solid/default.nix
+++ b/pkgs/development/libraries/kde-frameworks/solid/default.nix
@@ -8,8 +8,8 @@ mkDerivation {
   pname = "solid";
   patches = [ ./fix-search-path.patch ];
   nativeBuildInputs = [ bison extra-cmake-modules flex ]
-    ++ lib.optionals stdenv.isLinux [ media-player-info ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ media-player-info ];
   buildInputs = [ qtdeclarative qttools ];
   propagatedBuildInputs = [ qtbase ];
-  propagatedUserEnvPkgs = lib.optionals stdenv.isLinux [ media-player-info ];
+  propagatedUserEnvPkgs = lib.optionals stdenv.hostPlatform.isLinux [ media-player-info ];
 }
diff --git a/pkgs/development/libraries/kerberos/heimdal.nix b/pkgs/development/libraries/kerberos/heimdal.nix
index 60b3ad00aeda..ab9a107cd47e 100644
--- a/pkgs/development/libraries/kerberos/heimdal.nix
+++ b/pkgs/development/libraries/kerberos/heimdal.nix
@@ -32,10 +32,10 @@
 , nixosTests
 
 , withCJSON ? true
-, withCapNG ? stdenv.isLinux
+, withCapNG ? stdenv.hostPlatform.isLinux
 # libmicrohttpd should theoretically work for darwin as well, but something is broken.
 # It affects tests check-bx509d and check-httpkadmind.
-, withMicroHTTPD ? stdenv.isLinux
+, withMicroHTTPD ? stdenv.hostPlatform.isLinux
 , withOpenLDAP ? true
 , withOpenLDAPAsHDBModule ? false
 , withOpenSSL ? true
@@ -71,7 +71,7 @@ stdenv.mkDerivation {
   ++ (with perlPackages; [ JSON ]);
 
   buildInputs = [ db libedit pam ]
-    ++ lib.optionals (stdenv.isDarwin) [ CoreFoundation Security SystemConfiguration ]
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ CoreFoundation Security SystemConfiguration ]
     ++ lib.optionals (withCJSON) [ cjson ]
     ++ lib.optionals (withCapNG) [ libcap_ng ]
     ++ lib.optionals (withMicroHTTPD) [ libmicrohttpd ]
@@ -132,7 +132,7 @@ stdenv.mkDerivation {
 
   # (test_cc) heimdal uses librokens implementation of `secure_getenv` on darwin,
   #           which expects either USER or LOGNAME to be set.
-  preCheck = lib.optionalString (stdenv.isDarwin) ''
+  preCheck = lib.optionalString (stdenv.hostPlatform.isDarwin) ''
     export USER=nix-builder
   '';
 
diff --git a/pkgs/development/libraries/kerberos/krb5.nix b/pkgs/development/libraries/kerberos/krb5.nix
index f48a2136ad11..a384d49fed03 100644
--- a/pkgs/development/libraries/kerberos/krb5.nix
+++ b/pkgs/development/libraries/kerberos/krb5.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     # krb5's ./configure does not allow passing --enable-shared and --enable-static at the same time.
     # See https://bbs.archlinux.org/viewtopic.php?pid=1576737#p1576737
     ++ lib.optionals staticOnly [ "--enable-static" "--disable-shared" ]
-    ++ lib.optional stdenv.isFreeBSD ''WARN_CFLAGS=''
+    ++ lib.optional stdenv.hostPlatform.isFreeBSD ''WARN_CFLAGS=''
     ++ lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform)
        [ "krb5_cv_attr_constructor_destructor=yes,yes"
          "ac_cv_func_regcomp=yes"
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ byacc perl pkg-config ]
     # Provides the mig command used by the build scripts
-    ++ lib.optional stdenv.isDarwin bootstrap_cmds;
+    ++ lib.optional stdenv.hostPlatform.isDarwin bootstrap_cmds;
 
   buildInputs = [ openssl ]
     ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.libc != "bionic" && !(stdenv.hostPlatform.useLLVM or false)) [ keyutils ]
@@ -69,7 +69,7 @@ stdenv.mkDerivation rec {
     ++ lib.optionals withLibedit [ libedit ]
     ++ lib.optionals withVerto [ libverto ];
 
-  propagatedBuildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk; [
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk; [
     libs.xpc
     frameworks.Kerberos
   ]);
diff --git a/pkgs/development/libraries/kyotocabinet/default.nix b/pkgs/development/libraries/kyotocabinet/default.nix
index 5c5ab34bc24c..ebe783ae8beb 100644
--- a/pkgs/development/libraries/kyotocabinet/default.nix
+++ b/pkgs/development/libraries/kyotocabinet/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-TIXXNmaNgpIL/b25KsPWa32xEI8JWBp2ndkWCgLe80k=";
   };
 
-  prePatch = lib.optionalString stdenv.isDarwin ''
+  prePatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace kccommon.h \
       --replace tr1/unordered_map unordered_map \
       --replace tr1/unordered_set unordered_set \
diff --git a/pkgs/development/libraries/ldb/default.nix b/pkgs/development/libraries/ldb/default.nix
index 80a3f725f970..65fc10c92a70 100644
--- a/pkgs/development/libraries/ldb/default.nix
+++ b/pkgs/development/libraries/ldb/default.nix
@@ -80,7 +80,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "LDAP-like embedded database";
     homepage = "https://ldb.samba.org/";
     license = licenses.lgpl3Plus;
diff --git a/pkgs/development/libraries/lemon-graph/default.nix b/pkgs/development/libraries/lemon-graph/default.nix
index ae071a727133..4e96e9f4c93a 100644
--- a/pkgs/development/libraries/lemon-graph/default.nix
+++ b/pkgs/development/libraries/lemon-graph/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
 
   # error: no viable conversion from ...
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   patches = [
     # error: ISO C++17 does not allow 'register' storage class specifier
diff --git a/pkgs/development/libraries/leptonica/default.nix b/pkgs/development/libraries/leptonica/default.nix
index 12cd3f074fcb..41af5b44a967 100644
--- a/pkgs/development/libraries/leptonica/default.nix
+++ b/pkgs/development/libraries/leptonica/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   nativeCheckInputs = [ which gnuplot ];
 
   # Fails on pngio_reg for unknown reason
-  doCheck = false; # !stdenv.isDarwin;
+  doCheck = false; # !stdenv.hostPlatform.isDarwin;
 
   meta = {
     description = "Image processing and analysis library";
diff --git a/pkgs/development/libraries/leveldb/default.nix b/pkgs/development/libraries/leveldb/default.nix
index f5e7e2a638d2..9d2dfe468029 100644
--- a/pkgs/development/libraries/leveldb/default.nix
+++ b/pkgs/development/libraries/leveldb/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ snappy ];
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin fixDarwinDylibNames ++ [ cmake ];
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames ++ [ cmake ];
 
   doCheck = true;
 
diff --git a/pkgs/development/libraries/lib2geom/default.nix b/pkgs/development/libraries/lib2geom/default.nix
index e0db2b76f19e..eedb433e61be 100644
--- a/pkgs/development/libraries/lib2geom/default.nix
+++ b/pkgs/development/libraries/lib2geom/default.nix
@@ -77,7 +77,7 @@ stdenv.mkDerivation rec {
   # TODO: Update cmake hook to make it simpler to selectively disable cmake tests: #113829
   checkPhase = let
     disabledTests =
-      lib.optionals stdenv.isAarch64 [
+      lib.optionals stdenv.hostPlatform.isAarch64 [
         # Broken on all platforms, test just accidentally passes on some.
         # https://gitlab.com/inkscape/lib2geom/-/issues/63
         "elliptical-arc-test"
diff --git a/pkgs/development/libraries/lib3mf/default.nix b/pkgs/development/libraries/lib3mf/default.nix
index 2436fbc00287..df88534bc6e7 100644
--- a/pkgs/development/libraries/lib3mf/default.nix
+++ b/pkgs/development/libraries/lib3mf/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     libzip gtest openssl
-  ] ++ (if stdenv.isDarwin then [ libossp_uuid ] else [ libuuid ]);
+  ] ++ (if stdenv.hostPlatform.isDarwin then [ libossp_uuid ] else [ libuuid ]);
 
   postPatch = ''
     # This lets us build the tests properly on aarch64-darwin.
diff --git a/pkgs/development/libraries/libLAS/default.nix b/pkgs/development/libraries/libLAS/default.nix
index b92d9161c1a3..f9bd01306585 100644
--- a/pkgs/development/libraries/libLAS/default.nix
+++ b/pkgs/development/libraries/libLAS/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     "-DCMAKE_EXE_LINKER_FLAGS=-pthread"
   ];
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change "@rpath/liblas.3.dylib" "$out/lib/liblas.3.dylib" $out/lib/liblas_c.dylib
   '';
 
diff --git a/pkgs/development/libraries/libad9361/default.nix b/pkgs/development/libraries/libad9361/default.nix
index f370870f71ef..96f1e877d52b 100644
--- a/pkgs/development/libraries/libad9361/default.nix
+++ b/pkgs/development/libraries/libad9361/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ libiio ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Fix iio include path on darwin to match linux
     for i in test/*.c; do
       substituteInPlace $i \
diff --git a/pkgs/development/libraries/libadwaita/default.nix b/pkgs/development/libraries/libadwaita/default.nix
index 924b8884df80..bd51a9a1245e 100644
--- a/pkgs/development/libraries/libadwaita/default.nix
+++ b/pkgs/development/libraries/libadwaita/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     appstream
     fribidi
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Foundation
   ];
@@ -72,7 +72,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeCheckInputs = [
     adwaita-icon-theme
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     xvfb-run
   ];
 
@@ -80,7 +80,7 @@ stdenv.mkDerivation (finalAttrs: {
   #
   # not ok /Adwaita/ButtonContent/style_class_button - Gdk-FATAL-CRITICAL:
   # gdk_macos_monitor_get_workarea: assertion 'GDK_IS_MACOS_MONITOR (self)' failed
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   separateDebugInfo = true;
 
   checkPhase = ''
@@ -98,7 +98,7 @@ stdenv.mkDerivation (finalAttrs: {
       # Tests need a cache directory
       "HOME=$TMPDIR"
     )
-    env "''${testEnvironment[@]}" ${lib.optionalString (!stdenv.isDarwin) "xvfb-run"} \
+    env "''${testEnvironment[@]}" ${lib.optionalString (!stdenv.hostPlatform.isDarwin) "xvfb-run"} \
       meson test --print-errorlogs
 
     runHook postCheck
diff --git a/pkgs/development/libraries/libagar/libagar_test.nix b/pkgs/development/libraries/libagar/libagar_test.nix
index 0582019d72f5..8fa18093aa35 100644
--- a/pkgs/development/libraries/libagar/libagar_test.nix
+++ b/pkgs/development/libraries/libagar/libagar_test.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
   buildInputs = [ perl bsdbuild libagar libjpeg libpng openssl ];
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Tests for libagar";
     mainProgram = "agartest";
     homepage = "http://libagar.org/index.html";
diff --git a/pkgs/development/libraries/libantlr3c/default.nix b/pkgs/development/libraries/libantlr3c/default.nix
index f61c0bfafc7b..622dabd82394 100644
--- a/pkgs/development/libraries/libantlr3c/default.nix
+++ b/pkgs/development/libraries/libantlr3c/default.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
     sha256 ="0lpbnb4dq4azmsvlhp6khq1gy42kyqyjv8gww74g5lm2y6blm4fa";
   };
 
-  configureFlags = lib.optional stdenv.is64bit "--enable-64bit"
+  configureFlags = lib.optional stdenv.hostPlatform.is64bit "--enable-64bit"
     # libantlr3c wrongly emits the abi flags -m64 and -m32 which imply x86 archs
     # https://github.com/antlr/antlr3/issues/205
     ++ lib.optional (!stdenv.hostPlatform.isx86) "--disable-abiflags";
diff --git a/pkgs/development/libraries/libao/default.nix b/pkgs/development/libraries/libao/default.nix
index b920fe9c3b4e..6c6743b2b55e 100644
--- a/pkgs/development/libraries/libao/default.nix
+++ b/pkgs/development/libraries/libao/default.nix
@@ -33,8 +33,8 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ ] ++
     lib.optional  usePulseAudio   libpulseaudio ++
-    lib.optionals stdenv.isLinux  [ alsa-lib libcap ] ++
-    lib.optionals stdenv.isDarwin [ CoreAudio CoreServices AudioUnit ];
+    lib.optionals stdenv.hostPlatform.isLinux  [ alsa-lib libcap ] ++
+    lib.optionals stdenv.hostPlatform.isDarwin [ CoreAudio CoreServices AudioUnit ];
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
 
diff --git a/pkgs/development/libraries/libaom/default.nix b/pkgs/development/libraries/libaom/default.nix
index 8f4afbf5a3e0..01f361d05476 100644
--- a/pkgs/development/libraries/libaom/default.nix
+++ b/pkgs/development/libraries/libaom/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     "-DCONFIG_TUNE_VMAF=1"
   ] ++ lib.optionals (isCross && !stdenv.hostPlatform.isx86) [
     "-DCMAKE_ASM_COMPILER=${stdenv.cc.targetPrefix}as"
-  ] ++ lib.optionals stdenv.isAarch32 [
+  ] ++ lib.optionals stdenv.hostPlatform.isAarch32 [
     # armv7l-hf-multiplatform does not support NEON
     # see lib/systems/platform.nix
     "-DENABLE_NEON=0"
diff --git a/pkgs/development/libraries/libaosd/default.nix b/pkgs/development/libraries/libaosd/default.nix
index 540fc10998e5..8068ae3edd9d 100644
--- a/pkgs/development/libraries/libaosd/default.nix
+++ b/pkgs/development/libraries/libaosd/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
       composited rendering via XComposite, as well as support for
       rendering Cairo and Pango layouts.
     '';
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/atheme-legacy/libaosd";
     license = licenses.mit;
     maintainers = with maintainers; [ unode ];
diff --git a/pkgs/development/libraries/libargon2/default.nix b/pkgs/development/libraries/libargon2/default.nix
index 6e2ef83c5eac..ccd8166ca4f0 100644
--- a/pkgs/development/libraries/libargon2/default.nix
+++ b/pkgs/development/libraries/libargon2/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "0p4ry9dn0mi9js0byijxdyiwx74p1nr8zj7wjpd1fjgqva4sk23i";
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
 
diff --git a/pkgs/development/libraries/libass/default.nix b/pkgs/development/libraries/libass/default.nix
index 3c3fa3ee7066..db5603ac4aea 100644
--- a/pkgs/development/libraries/libass/default.nix
+++ b/pkgs/development/libraries/libass/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ freetype fribidi harfbuzz ]
     ++ lib.optional fontconfigSupport fontconfig
-    ++ lib.optional stdenv.isDarwin [
+    ++ lib.optional stdenv.hostPlatform.isDarwin [
       libiconv
       darwin.apple_sdk.frameworks.ApplicationServices
       darwin.apple_sdk.frameworks.CoreFoundation
diff --git a/pkgs/development/libraries/libasyncns/default.nix b/pkgs/development/libraries/libasyncns/default.nix
index 09e056373d27..77c998f4216b 100644
--- a/pkgs/development/libraries/libasyncns/default.nix
+++ b/pkgs/development/libraries/libasyncns/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "0x5b6lcic4cd7q0bx00x93kvpyzl7n2abbgvqbrlzrfb8vknc6jg";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace libasyncns/asyncns.c \
       --replace '<arpa/nameser.h>' '<arpa/nameser_compat.h>'
   '';
diff --git a/pkgs/development/libraries/libatomic_ops/default.nix b/pkgs/development/libraries/libatomic_ops/default.nix
index bf83a9e8456a..a9fc75558e9b 100644
--- a/pkgs/development/libraries/libatomic_ops/default.nix
+++ b/pkgs/development/libraries/libatomic_ops/default.nix
@@ -14,9 +14,9 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "dev" "doc" ];
 
-  nativeBuildInputs = lib.optionals stdenv.isCygwin [ autoconf automake libtool ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isCygwin [ autoconf automake libtool ];
 
-  preConfigure = lib.optionalString stdenv.isCygwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isCygwin ''
     sed -i -e "/libatomic_ops_gpl_la_SOURCES/a libatomic_ops_gpl_la_LIBADD = libatomic_ops.la" src/Makefile.am
     ./autogen.sh
   '';
diff --git a/pkgs/development/libraries/libbacktrace/default.nix b/pkgs/development/libraries/libbacktrace/default.nix
index 1be572671e02..60c7ede0993f 100644
--- a/pkgs/development/libraries/libbacktrace/default.nix
+++ b/pkgs/development/libraries/libbacktrace/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation {
     (lib.enableFeature enableShared "shared")
   ];
 
-  doCheck = stdenv.isLinux && !stdenv.hostPlatform.isMusl;
+  doCheck = stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isMusl;
 
   passthru = {
     updateScript = unstableGitUpdater { };
diff --git a/pkgs/development/libraries/libbladeRF/default.nix b/pkgs/development/libraries/libbladeRF/default.nix
index 94d1257d0e7d..77e72d22db6c 100644
--- a/pkgs/development/libraries/libbladeRF/default.nix
+++ b/pkgs/development/libraries/libbladeRF/default.nix
@@ -16,8 +16,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config git doxygen help2man ];
   # ncurses used due to https://github.com/Nuand/bladeRF/blob/ab4fc672c8bab4f8be34e8917d3f241b1d52d0b8/host/utilities/bladeRF-cli/CMakeLists.txt#L208
   buildInputs = [ tecla libusb1 ]
-    ++ lib.optionals stdenv.isLinux [ udev ]
-    ++ lib.optionals stdenv.isDarwin [ ncurses ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ udev ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ ncurses ];
 
   # Fixup shebang
   prePatch = "patchShebangs host/utilities/bladeRF-cli/src/cmd/doc/generate.bash";
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [
     "-DBUILD_DOCUMENTATION=ON"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-DUDEV_RULES_PATH=etc/udev/rules.d"
     "-DINSTALL_UDEV_RULES=ON"
     "-DBLADERF_GROUP=bladerf"
diff --git a/pkgs/development/libraries/libbluray/default.nix b/pkgs/development/libraries/libbluray/default.nix
index 672908281b0e..c31c05920e31 100644
--- a/pkgs/development/libraries/libbluray/default.nix
+++ b/pkgs/development/libraries/libbluray/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ fontconfig ]
     ++ lib.optional withMetadata libxml2
     ++ lib.optional withFonts freetype
-    ++ lib.optional stdenv.isDarwin DiskArbitration;
+    ++ lib.optional stdenv.hostPlatform.isDarwin DiskArbitration;
 
   propagatedBuildInputs = lib.optional withAACS libaacs;
 
diff --git a/pkgs/development/libraries/libbtbb/default.nix b/pkgs/development/libraries/libbtbb/default.nix
index e0e70005e25f..9ea153fab6f6 100644
--- a/pkgs/development/libraries/libbtbb/default.nix
+++ b/pkgs/development/libraries/libbtbb/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "1byv8174xam7siakr1p0523x97wkh0fmwmq341sd3g70qr2g767d";
   };
 
-  nativeBuildInputs = [ cmake ] ++ lib.optionals stdenv.isDarwin [ CoreServices ];
+  nativeBuildInputs = [ cmake ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   # https://github.com/greatscottgadgets/libbtbb/issues/63
   postPatch = ''
diff --git a/pkgs/development/libraries/libbutl/default.nix b/pkgs/development/libraries/libbutl/default.nix
index 65fe845ff25a..aaf78cec08dc 100644
--- a/pkgs/development/libraries/libbutl/default.nix
+++ b/pkgs/development/libraries/libbutl/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     build2
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     DarwinTools
   ];
 
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
   # but especially important when bootstrapping
   disallowedReferences = [ build2 ];
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace libbutl/uuid-linux.cxx \
       --replace '"libuuid.so' '"${lib.getLib libuuid}/lib/libuuid.so'
   '';
diff --git a/pkgs/development/libraries/libcacard/default.nix b/pkgs/development/libraries/libcacard/default.nix
index 5f987943d8df..1dd07a9d6ec2 100644
--- a/pkgs/development/libraries/libcacard/default.nix
+++ b/pkgs/development/libraries/libcacard/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-+79N6Mt9tb3/XstnL/Db5pOfufNEuQDVG6YpUymjMuc=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i '/--version-script/d' Makefile.in
     sed -i 's/^vflag = .*$/vflag = ""/' meson.build
   '';
diff --git a/pkgs/development/libraries/libcanberra/default.nix b/pkgs/development/libraries/libcanberra/default.nix
index 0a9aabf73123..7f164c18b49c 100644
--- a/pkgs/development/libraries/libcanberra/default.nix
+++ b/pkgs/development/libraries/libcanberra/default.nix
@@ -2,7 +2,7 @@
 , gtk2-x11, gtk3-x11 , gtkSupport ? null
 , libpulseaudio, gst_all_1, libvorbis, libcap, systemd
 , Carbon, CoreServices, AppKit
-, withAlsa ? stdenv.isLinux, alsa-lib }:
+, withAlsa ? stdenv.hostPlatform.isLinux, alsa-lib }:
 
 stdenv.mkDerivation rec {
   pname = "libcanberra";
@@ -23,12 +23,12 @@ stdenv.mkDerivation rec {
   ] ++ (with gst_all_1; [ gstreamer gst-plugins-base ])
     ++ lib.optional (gtkSupport == "gtk2") gtk2-x11
     ++ lib.optional (gtkSupport == "gtk3") gtk3-x11
-    ++ lib.optionals stdenv.isDarwin [ Carbon CoreServices AppKit ]
-    ++ lib.optionals stdenv.isLinux [ libcap systemd ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon CoreServices AppKit ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libcap systemd ]
     ++ lib.optional withAlsa alsa-lib;
 
   configureFlags = [ "--disable-oss" ]
-    ++ lib.optional stdenv.isLinux "--with-systemdsystemunitdir=${placeholder "out"}/lib/systemd/system";
+    ++ lib.optional stdenv.hostPlatform.isLinux "--with-systemdsystemunitdir=${placeholder "out"}/lib/systemd/system";
 
   patches = [
     (fetchpatch {
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
       url = "http://git.0pointer.net/libcanberra.git/patch/?id=c0620e432650e81062c1967cc669829dbd29b310";
       sha256 = "0rc7zwn39yxzxp37qh329g7375r5ywcqcaak8ryd0dgvg8m5hcx9";
     })
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     (fetchpatch {
       url = "https://github.com/macports/macports-ports/raw/5a7965dfea7727d1ceedee46c7b0ccee9cb23468/audio/libcanberra/files/patch-configure.diff";
       sha256 = "sha256-pEJy1krciUEg5BFIS8FJ4BubjfS/nt9aqi6BLnS1+4M=";
diff --git a/pkgs/development/libraries/libcdio-paranoia/default.nix b/pkgs/development/libraries/libcdio-paranoia/default.nix
index 5f01756ecac0..93b3cb91ffc9 100644
--- a/pkgs/development/libraries/libcdio-paranoia/default.nix
+++ b/pkgs/development/libraries/libcdio-paranoia/default.nix
@@ -27,15 +27,15 @@ stdenv.mkDerivation rec {
   ];
   buildInputs =
     [ libcdio ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       IOKit
       DiskArbitration
     ];
 
-  propagatedBuildInputs = lib.optional stdenv.isDarwin DiskArbitration;
+  propagatedBuildInputs = lib.optional stdenv.hostPlatform.isDarwin DiskArbitration;
 
-  configureFlags = lib.optionals stdenv.isDarwin [ "--disable-ld-version-script" ];
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "--disable-ld-version-script" ];
 
   meta = with lib; {
     description = "CD paranoia on top of libcdio";
diff --git a/pkgs/development/libraries/libcdio/default.nix b/pkgs/development/libraries/libcdio/default.nix
index 820ac97a434f..9f0d8689f30e 100644
--- a/pkgs/development/libraries/libcdio/default.nix
+++ b/pkgs/development/libraries/libcdio/default.nix
@@ -31,11 +31,11 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config help2man ];
   buildInputs = [ libcddb libiconv ncurses ]
-    ++ lib.optionals stdenv.isDarwin [ Carbon IOKit ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon IOKit ];
 
   enableParallelBuilding = true;
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Library for OS-independent CD-ROM and CD image access";
diff --git a/pkgs/development/libraries/libcec/default.nix b/pkgs/development/libraries/libcec/default.nix
index 78746cf01254..4116f2a0172a 100644
--- a/pkgs/development/libraries/libcec/default.nix
+++ b/pkgs/development/libraries/libcec/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [
     "-DBUILD_SHARED_LIBS=1"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-DHAVE_LINUX_API=1"
   ];
 
diff --git a/pkgs/development/libraries/libcommuni/default.nix b/pkgs/development/libraries/libcommuni/default.nix
index c33fdcf00f33..93aec103bca0 100644
--- a/pkgs/development/libraries/libcommuni/default.nix
+++ b/pkgs/development/libraries/libcommuni/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   dontUseQmakeConfigure = true;
   configureFlags = [ "-config" "release" ]
     # Build mixes up dylibs/frameworks if one is not explicitly specified.
-    ++ lib.optionals stdenv.isDarwin [ "-config" "qt_framework" ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "-config" "qt_framework" ];
 
   dontWrapQtApps = true;
 
diff --git a/pkgs/development/libraries/libcouchbase/default.nix b/pkgs/development/libraries/libcouchbase/default.nix
index 4f813d74a897..f3decde56c77 100644
--- a/pkgs/development/libraries/libcouchbase/default.nix
+++ b/pkgs/development/libraries/libcouchbase/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   # Running tests in parallel does not work
   enableParallelChecking = false;
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "C client library for Couchbase";
diff --git a/pkgs/development/libraries/libdazzle/default.nix b/pkgs/development/libraries/libdazzle/default.nix
index c94707903872..08b286c825cf 100644
--- a/pkgs/development/libraries/libdazzle/default.nix
+++ b/pkgs/development/libraries/libdazzle/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
     docbook_xml_dtd_43
     dbus
     glib
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     xvfb-run
   ] ++ lib.optionals (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
     mesonEmulatorHook
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
     "-Denable_gtk_doc=true"
   ];
 
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
 
   checkPhase = ''
     xvfb-run -s '-screen 0 800x600x24' dbus-run-session \
diff --git a/pkgs/development/libraries/libdc1394/default.nix b/pkgs/development/libraries/libdc1394/default.nix
index 0163eb9015d2..fc33817a857e 100644
--- a/pkgs/development/libraries/libdc1394/default.nix
+++ b/pkgs/development/libraries/libdc1394/default.nix
@@ -16,8 +16,8 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [ libusb1 ]
-    ++ lib.optional stdenv.isLinux libraw1394
-    ++ lib.optional stdenv.isDarwin CoreServices;
+    ++ lib.optional stdenv.hostPlatform.isLinux libraw1394
+    ++ lib.optional stdenv.hostPlatform.isDarwin CoreServices;
 
   meta = with lib; {
     description = "Capture and control API for IIDC compliant cameras";
diff --git a/pkgs/development/libraries/libdevil/default.nix b/pkgs/development/libraries/libdevil/default.nix
index bfefe90487c4..53944f5a5e94 100644
--- a/pkgs/development/libraries/libdevil/default.nix
+++ b/pkgs/development/libraries/libdevil/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [ libjpeg libpng libmng lcms1 libtiff openexr ]
     ++ lib.optionals withXorg [ libX11 libGL ]
-    ++ lib.optionals stdenv.isDarwin [ OpenGL ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ OpenGL ];
 
   configureFlags = [ "--enable-ILU" "--enable-ILUT" ];
 
diff --git a/pkgs/development/libraries/libdiscid/default.nix b/pkgs/development/libraries/libdiscid/default.nix
index 926973bb5739..2c4e7de008b6 100644
--- a/pkgs/development/libraries/libdiscid/default.nix
+++ b/pkgs/development/libraries/libdiscid/default.nix
@@ -6,14 +6,14 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.IOKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.IOKit ];
 
   src = fetchurl {
     url = "http://ftp.musicbrainz.org/pub/musicbrainz/${pname}/${pname}-${version}.tar.gz";
     sha256 = "sha256-3V6PHJrq1ELiO3SanMkzY3LmLoitcHmitiiVsDkMsoI=";
   };
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-framework CoreFoundation -framework IOKit";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-framework CoreFoundation -framework IOKit";
 
   meta = with lib; {
     description = "C library for creating MusicBrainz DiscIDs from audio CDs";
diff --git a/pkgs/development/libraries/libdv/default.nix b/pkgs/development/libraries/libdv/default.nix
index 49c2ab1bdfa7..da69eedb2887 100644
--- a/pkgs/development/libraries/libdv/default.nix
+++ b/pkgs/development/libraries/libdv/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   # Disable priority scheduling on Darwin because it doesn’t support sched_setscheduler.
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace encodedv/dvconnect.c \
       --replace '#ifdef _SC_PRIORITY_SCHEDULING' '#if 0'
   '';
diff --git a/pkgs/development/libraries/libdvdcss/default.nix b/pkgs/development/libraries/libdvdcss/default.nix
index 6c832250fc1c..2e1cc41c5a73 100644
--- a/pkgs/development/libraries/libdvdcss/default.nix
+++ b/pkgs/development/libraries/libdvdcss/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation rec {
   pname = "libdvdcss";
   version = "1.4.3";
 
-  buildInputs = lib.optional stdenv.isDarwin IOKit;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin IOKit;
 
   src = fetchurl {
     url = "http://get.videolan.org/libdvdcss/${version}/${pname}-${version}.tar.bz2";
diff --git a/pkgs/development/libraries/libdwg/default.nix b/pkgs/development/libraries/libdwg/default.nix
index 969b5d9636f2..741d848c47a8 100644
--- a/pkgs/development/libraries/libdwg/default.nix
+++ b/pkgs/development/libraries/libdwg/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   hardeningDisable = [ "format" ];
 
   # remove forbidden references to $TMPDIR
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     for f in "$out"/bin/*; do
       if isELF "$f"; then
         patchelf --shrink-rpath --allowed-rpath-prefixes "$NIX_STORE" "$f"
diff --git a/pkgs/development/libraries/libepoxy/default.nix b/pkgs/development/libraries/libepoxy/default.nix
index f771ad140b55..5ff8055cedee 100644
--- a/pkgs/development/libraries/libepoxy/default.nix
+++ b/pkgs/development/libraries/libepoxy/default.nix
@@ -10,7 +10,7 @@
 , libX11
 , Carbon
 , OpenGL
-, x11Support ? !stdenv.isDarwin
+, x11Support ? !stdenv.hostPlatform.isDarwin
 , testers
 }:
 
@@ -30,15 +30,15 @@ stdenv.mkDerivation (finalAttrs: {
   postPatch = ''
     patchShebangs src/*.py
   ''
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/dispatch_common.h --replace "PLATFORM_HAS_GLX 0" "PLATFORM_HAS_GLX 1"
   ''
   # cgl_core and cgl_epoxy_api fail in darwin sandbox and on Hydra (because it's headless?)
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace test/meson.build \
       --replace "[ 'cgl_epoxy_api', [ 'cgl_epoxy_api.c' ] ]," ""
   ''
-  + lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) ''
+  + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) ''
     substituteInPlace test/meson.build \
       --replace "[ 'cgl_core', [ 'cgl_core.c' ] ]," ""
   '';
@@ -47,23 +47,23 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ meson ninja pkg-config utilmacros python3 ];
 
-  buildInputs = lib.optionals (x11Support && !stdenv.isDarwin) [
+  buildInputs = lib.optionals (x11Support && !stdenv.hostPlatform.isDarwin) [
     libGL
   ] ++ lib.optionals x11Support [
     libX11
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Carbon
     OpenGL
   ];
 
   mesonFlags = [
-    "-Degl=${if (x11Support && !stdenv.isDarwin) then "yes" else "no"}"
+    "-Degl=${if (x11Support && !stdenv.hostPlatform.isDarwin) then "yes" else "no"}"
     "-Dglx=${if x11Support then "yes" else "no"}"
     "-Dtests=${lib.boolToString finalAttrs.finalPackage.doCheck}"
     "-Dx11=${lib.boolToString x11Support}"
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (x11Support && !stdenv.isDarwin) ''-DLIBGL_PATH="${lib.getLib libGL}/lib"'';
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (x11Support && !stdenv.hostPlatform.isDarwin) ''-DLIBGL_PATH="${lib.getLib libGL}/lib"'';
 
   doCheck = true;
 
diff --git a/pkgs/development/libraries/libevent/default.nix b/pkgs/development/libraries/libevent/default.nix
index 167371e287c0..ab443dfac80d 100644
--- a/pkgs/development/libraries/libevent/default.nix
+++ b/pkgs/development/libraries/libevent/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   buildInputs = lib.optional sslSupport openssl
-    ++ lib.optional stdenv.isCygwin findutils;
+    ++ lib.optional stdenv.hostPlatform.isCygwin findutils;
 
   doCheck = false; # needs the net
 
diff --git a/pkgs/development/libraries/libewf/default.nix b/pkgs/development/libraries/libewf/default.nix
index 6c149b0186ee..3bfd958bfd60 100644
--- a/pkgs/development/libraries/libewf/default.nix
+++ b/pkgs/development/libraries/libewf/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ zlib openssl libuuid ]
-    ++ lib.optionals stdenv.isDarwin [ bzip2 ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ bzip2 ];
 
   # cannot run test program while cross compiling
   configureFlags = lib.optionals (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
diff --git a/pkgs/development/libraries/libextractor/default.nix b/pkgs/development/libraries/libextractor/default.nix
index d947534cb2ec..e154eebc48c1 100644
--- a/pkgs/development/libraries/libextractor/default.nix
+++ b/pkgs/development/libraries/libextractor/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchurl, fetchpatch2, substituteAll
 , libtool, gettext, zlib, bzip2, flac, libvorbis
 , exiv2, libgsf, pkg-config
-, rpmSupport ? stdenv.isLinux, rpm
+, rpmSupport ? stdenv.hostPlatform.isLinux, rpm
 , gstreamerSupport ? true, gst_all_1
 # ^ Needed e.g. for proper id3 and FLAC support.
 #   Set to `false` to decrease package closure size by about 87 MB (53%).
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
   # Checks need to be run after "make install", otherwise plug-ins are not in
   # the search path, etc.
   doCheck = false;
-  doInstallCheck = !stdenv.isDarwin;
+  doInstallCheck = !stdenv.hostPlatform.isDarwin;
   installCheckPhase = "make check";
 
   meta = with lib; {
diff --git a/pkgs/development/libraries/libfabric/default.nix b/pkgs/development/libraries/libfabric/default.nix
index 658e380d210b..6fabadf5f129 100644
--- a/pkgs/development/libraries/libfabric/default.nix
+++ b/pkgs/development/libraries/libfabric/default.nix
@@ -3,9 +3,9 @@
 , fetchFromGitHub
 , pkg-config
 , autoreconfHook
-, enablePsm2 ? (stdenv.isx86_64 && stdenv.isLinux)
+, enablePsm2 ? (stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.isLinux)
 , libpsm2
-, enableOpx ? (stdenv.isx86_64 && stdenv.isLinux)
+, enableOpx ? (stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.isLinux)
 , libuuid
 , numactl
 }:
diff --git a/pkgs/development/libraries/libff/default.nix b/pkgs/development/libraries/libff/default.nix
index af2191fb4136..527733750079 100644
--- a/pkgs/development/libraries/libff/default.nix
+++ b/pkgs/development/libraries/libff/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   };
 
   cmakeFlags = [ "-DWITH_PROCPS=Off" ]
-    ++ lib.optionals stdenv.isAarch64 [ "-DCURVE=ALT_BN128" "-DUSE_ASM=OFF" ];
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [ "-DCURVE=ALT_BN128" "-DUSE_ASM=OFF" ];
 
   postPatch = lib.optionalString (!enableStatic) ''
     substituteInPlace libff/CMakeLists.txt --replace "STATIC" "SHARED"
diff --git a/pkgs/development/libraries/libffi/3.3.nix b/pkgs/development/libraries/libffi/3.3.nix
index 50bec9edd050..d8dd3fa47d5c 100644
--- a/pkgs/development/libraries/libffi/3.3.nix
+++ b/pkgs/development/libraries/libffi/3.3.nix
@@ -63,6 +63,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ armeenm ];
     platforms = platforms.all;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/libraries/libfido2/default.nix b/pkgs/development/libraries/libfido2/default.nix
index 04bfadeef979..1a68b5eb6eb1 100644
--- a/pkgs/development/libraries/libfido2/default.nix
+++ b/pkgs/development/libraries/libfido2/default.nix
@@ -25,9 +25,9 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config ];
 
   buildInputs = [ libcbor zlib ]
-    ++ lib.optionals stdenv.isDarwin [ hidapi ]
-    ++ lib.optionals stdenv.isLinux [ udev ]
-    ++ lib.optionals (stdenv.isLinux && withPcsclite) [ pcsclite ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ hidapi ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ udev ]
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && withPcsclite) [ pcsclite ];
 
   propagatedBuildInputs = [ openssl ];
 
@@ -36,11 +36,11 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-DUDEV_RULES_DIR=${placeholder "out"}/etc/udev/rules.d"
     "-DCMAKE_INSTALL_LIBDIR=lib"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DUSE_HIDAPI=1"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-DNFC_LINUX=1"
-  ] ++ lib.optionals (stdenv.isLinux && withPcsclite) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && withPcsclite) [
     "-DUSE_PCSC=1"
   ];
 
diff --git a/pkgs/development/libraries/libfilezilla/default.nix b/pkgs/development/libraries/libfilezilla/default.nix
index 4076e5325c93..bbbcb81797af 100644
--- a/pkgs/development/libraries/libfilezilla/default.nix
+++ b/pkgs/development/libraries/libfilezilla/default.nix
@@ -22,9 +22,9 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkg-config ];
 
   buildInputs = [ gettext gnutls nettle libxcrypt ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv ApplicationServices ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ApplicationServices ];
 
-  preBuild = lib.optionalString (stdenv.isDarwin) ''
+  preBuild = lib.optionalString (stdenv.hostPlatform.isDarwin) ''
     export MACOSX_DEPLOYMENT_TARGET=11.0
   '';
 
diff --git a/pkgs/development/libraries/libfive/default.nix b/pkgs/development/libraries/libfive/default.nix
index c7915ae676ef..490f695fc101 100644
--- a/pkgs/development/libraries/libfive/default.nix
+++ b/pkgs/development/libraries/libfive/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ wrapQtAppsHook cmake ninja pkg-config python.pkgs.pythonImportsCheckHook ];
   buildInputs = [ eigen zlib libpng boost guile python qtbase ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk_11_0.frameworks.Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk_11_0.frameworks.Cocoa ];
 
   preConfigure = ''
     substituteInPlace studio/src/guile/interpreter.cpp \
@@ -57,7 +57,7 @@ stdenv.mkDerivation {
 
   cmakeFlags = [
     "-DGUILE_CCACHE_DIR=${placeholder "out"}/${guile.siteCcacheDir}"
-  ] ++ lib.optionals (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11") [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11") [
     # warning: 'aligned_alloc' is only available on macOS 10.15 or newer
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.15"
   ];
@@ -66,7 +66,7 @@ stdenv.mkDerivation {
     NIX_CFLAGS_COMPILE = "-Wno-error=enum-constexpr-conversion";
   };
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # No rules to install the mac app, so do it manually.
     mkdir -p $out/Applications
     cp -r studio/Studio.app $out/Applications/Studio.app
diff --git a/pkgs/development/libraries/libfixposix/default.nix b/pkgs/development/libraries/libfixposix/default.nix
index 3d451de582a5..3eb1dceffdef 100644
--- a/pkgs/development/libraries/libfixposix/default.nix
+++ b/pkgs/development/libraries/libfixposix/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-5qA6ytbqE+/05XQGxP9/4vEs9gFcuI3k7eJJYucW7fM=";
   };
 
-  nativeBuildInputs = [ autoreconfHook pkg-config ] ++ lib.optionals stdenv.isDarwin [ getconf ];
+  nativeBuildInputs = [ autoreconfHook pkg-config ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ getconf ];
 
   meta = with lib; {
     homepage = "https://github.com/sionescu/libfixposix";
diff --git a/pkgs/development/libraries/libfm/default.nix b/pkgs/development/libraries/libfm/default.nix
index 64928de4d4fe..ff08294bdb29 100644
--- a/pkgs/development/libraries/libfm/default.nix
+++ b/pkgs/development/libraries/libfm/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://blog.lxde.org/category/pcmanfm/";
     license = licenses.lgpl21Plus;
     description = "Glib-based library for file management";
diff --git a/pkgs/development/libraries/libfpx/default.nix b/pkgs/development/libraries/libfpx/default.nix
index 6f79ec1b9465..82785a4d0fb8 100644
--- a/pkgs/development/libraries/libfpx/default.nix
+++ b/pkgs/development/libraries/libfpx/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   # Darwin gets misdetected as Windows without this
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-D__unix";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-D__unix";
 
   patches = [
     (fetchpatch {
diff --git a/pkgs/development/libraries/libfreeaptx/default.nix b/pkgs/development/libraries/libfreeaptx/default.nix
index cfc120244521..7a59cde8433e 100644
--- a/pkgs/development/libraries/libfreeaptx/default.nix
+++ b/pkgs/development/libraries/libfreeaptx/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "dev" ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile \
       --replace '-soname' '-install_name' \
       --replace 'lib$(NAME).so' 'lib$(NAME).dylib'
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change libfreeaptx.dylib.0 $out/lib/libfreeaptx.dylib.0 $out/bin/freeaptxdec
     install_name_tool -change libfreeaptx.dylib.0 $out/lib/libfreeaptx.dylib.0 $out/bin/freeaptxenc
     install_name_tool -id $out/lib/libfreeaptx.dylib $out/lib/libfreeaptx.dylib
diff --git a/pkgs/development/libraries/libfreefare/default.nix b/pkgs/development/libraries/libfreefare/default.nix
index b05ea5bbe2d5..90e6f29c9d6e 100644
--- a/pkgs/development/libraries/libfreefare/default.nix
+++ b/pkgs/development/libraries/libfreefare/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
   };
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
-  buildInputs = [ libnfc openssl ] ++ lib.optionals stdenv.isDarwin [ libobjc IOKit Security ];
+  buildInputs = [ libnfc openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libobjc IOKit Security ];
 
   meta = with lib; {
     description = "Libfreefare project aims to provide a convenient API for MIFARE card manipulations";
diff --git a/pkgs/development/libraries/libftdi/default.nix b/pkgs/development/libraries/libftdi/default.nix
index 27b23f9d54bc..18dab4e340da 100644
--- a/pkgs/development/libraries/libftdi/default.nix
+++ b/pkgs/development/libraries/libftdi/default.nix
@@ -16,11 +16,11 @@ stdenv.mkDerivation rec {
     sha256 = "13l39f6k6gff30hsgh0wa2z422g9pyl91rh8a8zz6f34k2sxaxii";
   };
 
-  buildInputs = [ libusb-compat-0_1 ] ++ lib.optionals stdenv.isDarwin [ libobjc Security IOKit ];
+  buildInputs = [ libusb-compat-0_1 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libobjc Security IOKit ];
 
   propagatedBuildInputs = [ libusb-compat-0_1 ];
 
-  configureFlags = lib.optional (!stdenv.isDarwin) "--with-async-mode";
+  configureFlags = lib.optional (!stdenv.hostPlatform.isDarwin) "--with-async-mode";
 
   # allow async mode. from ubuntu. see:
   #   https://bazaar.launchpad.net/~ubuntu-branches/ubuntu/trusty/libftdi/trusty/view/head:/debian/patches/04_async_mode.diff
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   '';
 
   # remove forbidden references to $TMPDIR
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     for f in "$out"/bin/*; do
       if isELF "$f"; then
         patchelf --shrink-rpath --allowed-rpath-prefixes "$NIX_STORE" "$f"
diff --git a/pkgs/development/libraries/libgcrypt/1.8.nix b/pkgs/development/libraries/libgcrypt/1.8.nix
index 2f0f3b4fd019..720c376d0263 100644
--- a/pkgs/development/libraries/libgcrypt/1.8.nix
+++ b/pkgs/development/libraries/libgcrypt/1.8.nix
@@ -10,7 +10,7 @@
 , rsyslog
 }:
 
-assert enableCapabilities -> stdenv.isLinux;
+assert enableCapabilities -> stdenv.hostPlatform.isLinux;
 
 stdenv.mkDerivation rec {
   pname = "libgcrypt";
diff --git a/pkgs/development/libraries/libgcrypt/default.nix b/pkgs/development/libraries/libgcrypt/default.nix
index ffe9f42326f8..ad360dab55ca 100644
--- a/pkgs/development/libraries/libgcrypt/default.nix
+++ b/pkgs/development/libraries/libgcrypt/default.nix
@@ -11,7 +11,7 @@
 , rsyslog
 }:
 
-assert enableCapabilities -> stdenv.isLinux;
+assert enableCapabilities -> stdenv.hostPlatform.isLinux;
 
 stdenv.mkDerivation rec {
   pname = "libgcrypt";
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   depsBuildBuild = [ buildPackages.stdenv.cc ];
 
   buildInputs = [ libgpg-error ]
-    ++ lib.optional stdenv.isDarwin gettext
+    ++ lib.optional stdenv.hostPlatform.isDarwin gettext
     ++ lib.optional enableCapabilities libcap;
 
   strictDeps = true;
@@ -70,7 +70,7 @@ stdenv.mkDerivation rec {
 
   # TODO: figure out why this is even necessary and why the missing dylib only crashes
   # random instead of every test
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $lib/lib
     cp src/.libs/libgcrypt.20.dylib $lib/lib
   '';
diff --git a/pkgs/development/libraries/libgda/default.nix b/pkgs/development/libraries/libgda/default.nix
index a8af4d9b4874..b6a64c4b7a3f 100644
--- a/pkgs/development/libraries/libgda/default.nix
+++ b/pkgs/development/libraries/libgda/default.nix
@@ -79,7 +79,7 @@ stdenv.mkDerivation rec {
     # as mentioned in https://github.com/GNOME/libgda/blob/95eeca4b0470f347c645a27f714c62aa6e59f820/libgda/sqlite/README#L31,
     # which references the paper https://web.archive.org/web/20100610151539/http://lattice.umiacs.umd.edu/files/functions_tr.pdf
     # See also https://github.com/Homebrew/homebrew-core/blob/104f9ecd02854a82372b64d63d41356555378a52/Formula/libgda.rb
-    "--enable-system-sqlite=${if stdenv.isDarwin then "no" else "yes"}"
+    "--enable-system-sqlite=${if stdenv.hostPlatform.isDarwin then "no" else "yes"}"
   ];
 
   env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=incompatible-function-pointer-types";
diff --git a/pkgs/development/libraries/libgdiplus/default.nix b/pkgs/development/libraries/libgdiplus/default.nix
index 4d315b042ee9..63efe5430537 100644
--- a/pkgs/development/libraries/libgdiplus/default.nix
+++ b/pkgs/development/libraries/libgdiplus/default.nix
@@ -34,9 +34,9 @@ stdenv.mkDerivation (finalAttrs: {
     [ glib cairo fontconfig libtiff giflib
       libjpeg libpng libXrender libexif
     ]
-    ++ lib.optional stdenv.isDarwin Carbon;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Carbon;
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     ln -s $out/lib/libgdiplus.0.dylib $out/lib/libgdiplus.so
   '';
 
diff --git a/pkgs/development/libraries/libgit2/default.nix b/pkgs/development/libraries/libgit2/default.nix
index e110ceb67aa8..af0ae5f73a7d 100644
--- a/pkgs/development/libraries/libgit2/default.nix
+++ b/pkgs/development/libraries/libgit2/default.nix
@@ -49,9 +49,9 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [ zlib libssh2 openssl pcre llhttp ]
     ++ lib.optional withGssapi krb5
-    ++ lib.optional stdenv.isDarwin Security;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
-  propagatedBuildInputs = lib.optional (!stdenv.isLinux) libiconv;
+  propagatedBuildInputs = lib.optional (!stdenv.hostPlatform.isLinux) libiconv;
 
   doCheck = true;
   checkPhase = ''
diff --git a/pkgs/development/libraries/libglvnd/default.nix b/pkgs/development/libraries/libglvnd/default.nix
index d3e85c012cf1..c3667d664707 100644
--- a/pkgs/development/libraries/libglvnd/default.nix
+++ b/pkgs/development/libraries/libglvnd/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkg-config python3 addDriverRunpath ];
   buildInputs = [ libX11 libXext xorgproto ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/GLX/Makefile.am \
       --replace "-Wl,-Bsymbolic " ""
     substituteInPlace src/EGL/Makefile.am \
diff --git a/pkgs/development/libraries/libgourou/default.nix b/pkgs/development/libraries/libgourou/default.nix
index bfd483e5d31c..ba64735f873d 100644
--- a/pkgs/development/libraries/libgourou/default.nix
+++ b/pkgs/development/libraries/libgourou/default.nix
@@ -51,6 +51,6 @@ stdenv.mkDerivation rec {
     license = licenses.lgpl3Plus;
     maintainers = with maintainers; [ autumnal ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/libraries/libgpg-error/default.nix b/pkgs/development/libraries/libgpg-error/default.nix
index 9920a54e0413..2dee6c721bc1 100644
--- a/pkgs/development/libraries/libgpg-error/default.nix
+++ b/pkgs/development/libraries/libgpg-error/default.nix
@@ -55,7 +55,7 @@ in stdenv.mkDerivation (rec {
     #   ./config.status[1401]: shift: (null): bad number
     # (See <https://hydra.nixos.org/build/2931046/nixlog/1/raw>.)
     # Thus, re-run it with Bash.
-    lib.optionalString stdenv.isSunOS ''
+    lib.optionalString stdenv.hostPlatform.isSunOS ''
       ${stdenv.shell} config.status
     ''
     # ./configure errorneous decides to use weak symbols on pkgsStatic,
diff --git a/pkgs/development/libraries/libgrss/default.nix b/pkgs/development/libraries/libgrss/default.nix
index ce0c6e14edc2..c6de97101be8 100644
--- a/pkgs/development/libraries/libgrss/default.nix
+++ b/pkgs/development/libraries/libgrss/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     glib
     libxml2
     libsoup
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Foundation
     AppKit
   ];
diff --git a/pkgs/development/libraries/libgweather/default.nix b/pkgs/development/libraries/libgweather/default.nix
index 42b927211543..b07051358be0 100644
--- a/pkgs/development/libraries/libgweather/default.nix
+++ b/pkgs/development/libraries/libgweather/default.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
   mesonFlags = [
     "-Dzoneinfo_dir=${tzdata}/share/zoneinfo"
     (lib.mesonBool "introspection" withIntrospection)
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-Dc_args=-D_DARWIN_C_SOURCE"
   ];
 
diff --git a/pkgs/development/libraries/libhandy/0.x.nix b/pkgs/development/libraries/libhandy/0.x.nix
index d25335c89157..c20a8382b5d0 100644
--- a/pkgs/development/libraries/libhandy/0.x.nix
+++ b/pkgs/development/libraries/libhandy/0.x.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     "-Dintrospection=enabled"
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkPhase = ''
     NO_AT_BRIDGE=1 \
diff --git a/pkgs/development/libraries/libhandy/default.nix b/pkgs/development/libraries/libhandy/default.nix
index a43ee0986be8..829de78a6aeb 100644
--- a/pkgs/development/libraries/libhandy/default.nix
+++ b/pkgs/development/libraries/libhandy/default.nix
@@ -81,7 +81,7 @@ stdenv.mkDerivation rec {
   PKG_CONFIG_GLADEUI_2_0_MODULEDIR = "${placeholder "glade"}/lib/glade/modules";
   PKG_CONFIG_GLADEUI_2_0_CATALOGDIR = "${placeholder "glade"}/share/glade/catalogs";
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/development/libraries/libhv/default.nix b/pkgs/development/libraries/libhv/default.nix
index c64c8e6e291f..93524afabe49 100644
--- a/pkgs/development/libraries/libhv/default.nix
+++ b/pkgs/development/libraries/libhv/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ cmake ];
 
-  buildInputs = [ curl openssl ] ++ lib.optional stdenv.isDarwin Security;
+  buildInputs = [ curl openssl ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   cmakeFlags = [
     "-DENABLE_UDS=ON"
diff --git a/pkgs/development/libraries/libical/default.nix b/pkgs/development/libraries/libical/default.nix
index 9d5db75bb121..f6a0555f3412 100644
--- a/pkgs/development/libraries/libical/default.nix
+++ b/pkgs/development/libraries/libical/default.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     # https://github.com/NixOS/nixpkgs/pull/67204
     # previously with https://github.com/NixOS/nixpkgs/pull/61657#issuecomment-495579489
     # gtk-doc docbook_xsl docbook_xml_dtd_43 # for docs
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
   nativeInstallCheckInputs = [
@@ -95,7 +95,7 @@ stdenv.mkDerivation rec {
   # Musl does not support TZDIR.
   doInstallCheck = !stdenv.hostPlatform.isMusl;
   enableParallelChecking = false;
-  preInstallCheck = if stdenv.isDarwin then ''
+  preInstallCheck = if stdenv.hostPlatform.isDarwin then ''
     for testexe in $(find ./src/test -maxdepth 1 -type f -executable); do
       for lib in $(cd lib && ls *.3.dylib); do
         install_name_tool -change $lib $out/lib/$lib $testexe
diff --git a/pkgs/development/libraries/libiconv/default.nix b/pkgs/development/libraries/libiconv/default.nix
index b59887381f49..9bb60501a065 100644
--- a/pkgs/development/libraries/libiconv/default.nix
+++ b/pkgs/development/libraries/libiconv/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
   configureFlags = [
     (lib.enableFeature enableStatic "static")
     (lib.enableFeature enableShared "shared")
-  ] ++ lib.optional stdenv.isFreeBSD "--with-pic";
+  ] ++ lib.optional stdenv.hostPlatform.isFreeBSD "--with-pic";
 
   passthru = { inherit setupHooks; };
 
diff --git a/pkgs/development/libraries/libidn/default.nix b/pkgs/development/libraries/libidn/default.nix
index 916d6d0ad687..bafb2fff272f 100644
--- a/pkgs/development/libraries/libidn/default.nix
+++ b/pkgs/development/libraries/libidn/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   hardeningDisable = [ "format" ];
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
 
diff --git a/pkgs/development/libraries/libidn2/default.nix b/pkgs/development/libraries/libidn2/default.nix
index bfe9c2a24264..90c7198757c7 100644
--- a/pkgs/development/libraries/libidn2/default.nix
+++ b/pkgs/development/libraries/libidn2/default.nix
@@ -22,8 +22,8 @@ stdenv.mkDerivation rec {
 
   # The above patch causes the documentation to be regenerated, so the
   # documentation tools are required.
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [ help2man texinfo ];
-  buildInputs = [ libunistring ] ++ lib.optional stdenv.isDarwin libiconv;
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ help2man texinfo ];
+  buildInputs = [ libunistring ] ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
   depsBuildBuild = [ buildPackages.stdenv.cc ];
 
   meta = {
diff --git a/pkgs/development/libraries/libiio/default.nix b/pkgs/development/libraries/libiio/default.nix
index 8adc01512040..023dfce86bf5 100644
--- a/pkgs/development/libraries/libiio/default.nix
+++ b/pkgs/development/libraries/libiio/default.nix
@@ -46,8 +46,8 @@ stdenv.mkDerivation rec {
     libxml2
     libusb1
   ] ++ lib.optional avahiSupport avahi
-    ++ lib.optional stdenv.isLinux libaio
-    ++ lib.optionals stdenv.isDarwin [ CFNetwork CoreServices ];
+    ++ lib.optional stdenv.hostPlatform.isLinux libaio
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CFNetwork CoreServices ];
 
   cmakeFlags = [
     "-DUDEV_RULES_INSTALL_DIR=${placeholder "out"}/lib/udev/rules.d"
diff --git a/pkgs/development/libraries/libimobiledevice/default.nix b/pkgs/development/libraries/libimobiledevice/default.nix
index 0e81f32bebf8..88b9391d4bdb 100644
--- a/pkgs/development/libraries/libimobiledevice/default.nix
+++ b/pkgs/development/libraries/libimobiledevice/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
     libtasn1
     libusbmuxd
     libimobiledevice-glue
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     SystemConfiguration
     CoreFoundation
   ];
diff --git a/pkgs/development/libraries/libiodbc/default.nix b/pkgs/development/libraries/libiodbc/default.nix
index 6d6d7d46576d..c059d619ccae 100644
--- a/pkgs/development/libraries/libiodbc/default.nix
+++ b/pkgs/development/libraries/libiodbc/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = lib.optionals useGTK [ gtk2 ]
-                ++ lib.optional stdenv.isDarwin Carbon;
+                ++ lib.optional stdenv.hostPlatform.isDarwin Carbon;
 
   preBuild =
     ''
diff --git a/pkgs/development/libraries/libipt/default.nix b/pkgs/development/libraries/libipt/default.nix
index 61ec0ce67d88..060f6a803566 100644
--- a/pkgs/development/libraries/libipt/default.nix
+++ b/pkgs/development/libraries/libipt/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = lib.optional stdenv.isFreeBSD freebsd.libstdthreads;
+  buildInputs = lib.optional stdenv.hostPlatform.isFreeBSD freebsd.libstdthreads;
 
   meta = with lib; {
     description = "Intel Processor Trace decoder library";
diff --git a/pkgs/development/libraries/libiptcdata/default.nix b/pkgs/development/libraries/libiptcdata/default.nix
index f6f918c1d522..741c8d8a74a5 100644
--- a/pkgs/development/libraries/libiptcdata/default.nix
+++ b/pkgs/development/libraries/libiptcdata/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     autoreconfHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     libintl
   ];
diff --git a/pkgs/development/libraries/libiscsi/default.nix b/pkgs/development/libraries/libiscsi/default.nix
index 1008037c60cc..2a0d722c3d0f 100644
--- a/pkgs/development/libraries/libiscsi/default.nix
+++ b/pkgs/development/libraries/libiscsi/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
 
-  env = lib.optionalAttrs (stdenv.is32bit || stdenv.isDarwin) {
+  env = lib.optionalAttrs (stdenv.hostPlatform.is32bit || stdenv.hostPlatform.isDarwin) {
     # iscsi-discard.c:223:57: error: format specifies type 'unsigned long' but the argument has type 'uint64_t' (aka 'unsigned long long') [-Werror,-Wformat]
     NIX_CFLAGS_COMPILE = "-Wno-error=format";
   };
diff --git a/pkgs/development/libraries/libks/default.nix b/pkgs/development/libraries/libks/default.nix
index 4122d4f57617..cc6311f024ac 100644
--- a/pkgs/development/libraries/libks/default.nix
+++ b/pkgs/development/libraries/libks/default.nix
@@ -37,8 +37,8 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [ openssl ]
-    ++ lib.optional stdenv.isLinux libuuid
-    ++ lib.optional stdenv.isDarwin libossp_uuid;
+    ++ lib.optional stdenv.hostPlatform.isLinux libuuid
+    ++ lib.optional stdenv.hostPlatform.isDarwin libossp_uuid;
 
   passthru = {
     tests.freeswitch = freeswitch;
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
   };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Foundational support for signalwire C products";
     homepage = "https://github.com/signalwire/libks";
     maintainers = with lib.maintainers; [ misuzu ];
diff --git a/pkgs/development/libraries/liblastfm/default.nix b/pkgs/development/libraries/liblastfm/default.nix
index 7dcc3b0d0cc0..060839326b15 100644
--- a/pkgs/development/libraries/liblastfm/default.nix
+++ b/pkgs/development/libraries/liblastfm/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config which cmake ];
   buildInputs = [ fftwSinglePrec libsamplerate qtbase ]
-    ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.SystemConfiguration;
+    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.SystemConfiguration;
 
   env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "11") "-std=c++11";
 
diff --git a/pkgs/development/libraries/liblinear/default.nix b/pkgs/development/libraries/liblinear/default.nix
index 449792a07e82..31da8305be7a 100644
--- a/pkgs/development/libraries/liblinear/default.nix
+++ b/pkgs/development/libraries/liblinear/default.nix
@@ -20,7 +20,7 @@ in stdenv.mkDerivation rec {
   buildFlags = [ "lib" "predict" "train" ];
 
   installPhase = ''
-    ${if stdenv.isDarwin then ''
+    ${if stdenv.hostPlatform.isDarwin then ''
       install -D liblinear.so.${soVersion} $out/lib/liblinear.${soVersion}.dylib
       ln -s $out/lib/liblinear.${soVersion}.dylib $out/lib/liblinear.dylib
     '' else ''
diff --git a/pkgs/development/libraries/liblqr-1/default.nix b/pkgs/development/libraries/liblqr-1/default.nix
index 6b8c2ebeaa94..f2f6497b676b 100644
--- a/pkgs/development/libraries/liblqr-1/default.nix
+++ b/pkgs/development/libraries/liblqr-1/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = lib.optionals stdenv.isDarwin [ Carbon AppKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Carbon AppKit ];
   propagatedBuildInputs = [ glib ];
 
   meta = with lib; {
diff --git a/pkgs/development/libraries/liblxi/default.nix b/pkgs/development/libraries/liblxi/default.nix
index 24c454d4ee7e..887c751ad46b 100644
--- a/pkgs/development/libraries/liblxi/default.nix
+++ b/pkgs/development/libraries/liblxi/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ meson ninja cmake pkg-config rpcsvc-proto ];
 
-  buildInputs = lib.optionals (!stdenv.isDarwin) [
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libtirpc
     avahi
   ] ++ [
diff --git a/pkgs/development/libraries/libmcrypt/default.nix b/pkgs/development/libraries/libmcrypt/default.nix
index 6a4b0adfefb4..3ed85fad550d 100644
--- a/pkgs/development/libraries/libmcrypt/default.nix
+++ b/pkgs/development/libraries/libmcrypt/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "0gipgb939vy9m66d3k8il98rvvwczyaw2ixr8yn6icds9c3nrsz4";
   };
 
-  buildInputs = lib.optional stdenv.isDarwin cctools;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin cctools;
 
   configureFlags = lib.optionals disablePosixThreads [ "--disable-posix-threads" ]
     ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
diff --git a/pkgs/development/libraries/libmemcached/default.nix b/pkgs/development/libraries/libmemcached/default.nix
index 07fe854c777c..053cd91be2d9 100644
--- a/pkgs/development/libraries/libmemcached/default.nix
+++ b/pkgs/development/libraries/libmemcached/default.nix
@@ -14,8 +14,8 @@ stdenv.mkDerivation rec {
   # https://bugs.launchpad.net/libmemcached/+bug/1281907
   # Fix building on macOS (patch from Homebrew)
   # https://bugs.launchpad.net/libmemcached/+bug/1245562
-  patches = lib.optional stdenv.isLinux ./libmemcached-fix-linking-with-libpthread.patch
-    ++ lib.optional stdenv.isDarwin (fetchpatch {
+  patches = lib.optional stdenv.hostPlatform.isLinux ./libmemcached-fix-linking-with-libpthread.patch
+    ++ lib.optional stdenv.hostPlatform.isDarwin (fetchpatch {
       url = "https://raw.githubusercontent.com/Homebrew/homebrew/bfd4a0a4626b61c2511fdf573bcbbc6bbe86340e/Library/Formula/libmemcached.rb";
       sha256 = "1gjf3vd7hiyzxjvlg2zfc3y2j0lyr6nhbws4xb5dmin3csyp8qb8";
     })
diff --git a/pkgs/development/libraries/libmesode/default.nix b/pkgs/development/libraries/libmesode/default.nix
index 128975246a8a..6ac53d3d5d3d 100644
--- a/pkgs/development/libraries/libmesode/default.nix
+++ b/pkgs/development/libraries/libmesode/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/profanity-im/libmesode/";
     license = with licenses; [ gpl3Only mit];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ devhell ];
   };
 }
diff --git a/pkgs/development/libraries/libmikmod/default.nix b/pkgs/development/libraries/libmikmod/default.nix
index f3122d8ab210..6e3f7eee3c57 100644
--- a/pkgs/development/libraries/libmikmod/default.nix
+++ b/pkgs/development/libraries/libmikmod/default.nix
@@ -13,14 +13,14 @@ in stdenv.mkDerivation rec {
   };
 
   buildInputs = [ texinfo ]
-    ++ optional stdenv.isLinux alsa-lib
-    ++ optional stdenv.isDarwin CoreAudio;
+    ++ optional stdenv.hostPlatform.isLinux alsa-lib
+    ++ optional stdenv.hostPlatform.isDarwin CoreAudio;
   propagatedBuildInputs =
-    optional stdenv.isLinux libpulseaudio;
+    optional stdenv.hostPlatform.isLinux libpulseaudio;
 
   outputs = [ "out" "dev" "man" ];
 
-  NIX_LDFLAGS = optionalString stdenv.isLinux "-lasound";
+  NIX_LDFLAGS = optionalString stdenv.hostPlatform.isLinux "-lasound";
 
   postInstall = ''
     moveToOutput bin/libmikmod-config "$dev"
diff --git a/pkgs/development/libraries/libmilter/default.nix b/pkgs/development/libraries/libmilter/default.nix
index a06f3d4deca1..10a098693679 100644
--- a/pkgs/development/libraries/libmilter/default.nix
+++ b/pkgs/development/libraries/libmilter/default.nix
@@ -34,9 +34,9 @@ stdenv.mkDerivation rec {
 
   patches = [ ./install.patch ./sharedlib.patch ./darwin.patch ];
 
-  nativeBuildInputs = [ m4 ] ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+  nativeBuildInputs = [ m4 ] ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     fixDarwinDylibNames $out/lib/libmilter.*.1
   '';
 
diff --git a/pkgs/development/libraries/libminc/default.nix b/pkgs/development/libraries/libminc/default.nix
index 189d2b12e519..b270b8eb5668 100644
--- a/pkgs/development/libraries/libminc/default.nix
+++ b/pkgs/development/libraries/libminc/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-DLIBMINC_USE_SYSTEM_NIFTI=ON"
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
     # -j1: see https://github.com/BIC-MNI/libminc/issues/110
   checkPhase = ''
     ctest -j1 --output-on-failure
diff --git a/pkgs/development/libraries/libmongocrypt/default.nix b/pkgs/development/libraries/libmongocrypt/default.nix
index f45d41fed628..0c887527307f 100644
--- a/pkgs/development/libraries/libmongocrypt/default.nix
+++ b/pkgs/development/libraries/libmongocrypt/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     mongoc
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Security
   ];
 
diff --git a/pkgs/development/libraries/libmpeg2/default.nix b/pkgs/development/libraries/libmpeg2/default.nix
index baada92d4340..13fce963738f 100644
--- a/pkgs/development/libraries/libmpeg2/default.nix
+++ b/pkgs/development/libraries/libmpeg2/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   # Otherwise clang fails with 'duplicate symbol ___sputc'
-  buildFlags = lib.optional stdenv.isDarwin "CFLAGS=-std=gnu89";
+  buildFlags = lib.optional stdenv.hostPlatform.isDarwin "CFLAGS=-std=gnu89";
 
   meta = {
     homepage = "http://libmpeg2.sourceforge.net/";
diff --git a/pkgs/development/libraries/libmtp/default.nix b/pkgs/development/libraries/libmtp/default.nix
index ea61234333b8..320873c9792c 100644
--- a/pkgs/development/libraries/libmtp/default.nix
+++ b/pkgs/development/libraries/libmtp/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
 
   configurePlatforms = [ "build" "host" ];
 
-  makeFlags = lib.optionals (stdenv.isLinux && !stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
+  makeFlags = lib.optionals (stdenv.hostPlatform.isLinux && !stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
     "MTP_HOTPLUG=${buildPackages.libmtp}/bin/mtp-hotplug"
   ];
 
diff --git a/pkgs/development/libraries/libnatpmp/default.nix b/pkgs/development/libraries/libnatpmp/default.nix
index 49e89b97344b..13128e81231e 100644
--- a/pkgs/development/libraries/libnatpmp/default.nix
+++ b/pkgs/development/libraries/libnatpmp/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     "CC:=$(CC)"
   ];
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin fixDarwinDylibNames;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   postFixup = ''
     chmod +x $out/lib/*
diff --git a/pkgs/development/libraries/libnfc/default.nix b/pkgs/development/libraries/libnfc/default.nix
index 88bc909ea0e6..8fb983333c1c 100644
--- a/pkgs/development/libraries/libnfc/default.nix
+++ b/pkgs/development/libraries/libnfc/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     "sysconfdir=/etc"
   ];
 
-  cmakeFlags = lib.optionals stdenv.isDarwin [
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "-DLIBNFC_DRIVER_PN532_I2C=OFF"
     "-DLIBNFC_DRIVER_PN532_SPI=OFF"
   ];
diff --git a/pkgs/development/libraries/libngspice/default.nix b/pkgs/development/libraries/libngspice/default.nix
index 3578441dd61a..0270050cd001 100644
--- a/pkgs/development/libraries/libngspice/default.nix
+++ b/pkgs/development/libraries/libngspice/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optionals (!withNgshared) [
     libXaw
     libXext
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     llvmPackages.openmp
   ];
 
diff --git a/pkgs/development/libraries/libofx/default.nix b/pkgs/development/libraries/libofx/default.nix
index b7dddd16672c..ec5f6d8924d7 100644
--- a/pkgs/development/libraries/libofx/default.nix
+++ b/pkgs/development/libraries/libofx/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   preConfigure = "./autogen.sh";
   configureFlags = [ "--with-opensp-includes=${opensp}/include/OpenSP" ];
   nativeBuildInputs = [ pkg-config libtool autoconf automake gengetopt ];
-  buildInputs = [ opensp libxml2 curl ] ++ lib.optional stdenv.isDarwin libiconv;
+  buildInputs = [ opensp libxml2 curl ] ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   meta = {
     description = "Opensource implementation of the Open Financial eXchange specification";
diff --git a/pkgs/development/libraries/liboil/default.nix b/pkgs/development/libraries/liboil/default.nix
index 4b112b70e7ad..2abbaa66f347 100644
--- a/pkgs/development/libraries/liboil/default.nix
+++ b/pkgs/development/libraries/liboil/default.nix
@@ -18,10 +18,10 @@ stdenv.mkDerivation rec {
 
   # fix "argb_paint_i386.c:53:Incorrect register `%rax' used with `l' suffix"
   # errors
-  configureFlags = lib.optional (stdenv.isDarwin && stdenv.isx86_64) "--build=x86_64";
+  configureFlags = lib.optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) "--build=x86_64";
 
   # fixes a cast in inline asm: easier than patching
-  buildFlags = lib.optional stdenv.isDarwin "CFLAGS=-fheinous-gnu-extensions";
+  buildFlags = lib.optional stdenv.hostPlatform.isDarwin "CFLAGS=-fheinous-gnu-extensions";
 
   meta = with lib; {
     description = "Library of simple functions that are optimized for various CPUs";
diff --git a/pkgs/development/libraries/libopenshot-audio/default.nix b/pkgs/development/libraries/libopenshot-audio/default.nix
index 236b3026068f..2d8cec21b189 100644
--- a/pkgs/development/libraries/libopenshot-audio/default.nix
+++ b/pkgs/development/libraries/libopenshot-audio/default.nix
@@ -40,9 +40,9 @@ stdenv.mkDerivation (finalAttrs: {
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
-  ] ++ (if stdenv.isDarwin then [
+  ] ++ (if stdenv.hostPlatform.isDarwin then [
     Accelerate
     AGL
     Cocoa
diff --git a/pkgs/development/libraries/libopenshot/default.nix b/pkgs/development/libraries/libopenshot/default.nix
index 0d83fa659e53..231b0cd109aa 100644
--- a/pkgs/development/libraries/libopenshot/default.nix
+++ b/pkgs/development/libraries/libopenshot/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-9X2UIRDD+1kNLbV8AnnPabdO2M0OfTDxQ7xyZtsE10k=";
   };
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     # Darwin requires both Magick++ and MagickCore for a successful linkage
     ./0001-link-magickcore.diff
   ];
@@ -51,9 +51,9 @@ stdenv.mkDerivation (finalAttrs: {
     qtbase
     qtmultimedia
     zeromq
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     llvmPackages.openmp
   ];
 
diff --git a/pkgs/development/libraries/libossp-uuid/default.nix b/pkgs/development/libraries/libossp-uuid/default.nix
index a283df1bbaea..267829d2aee4 100644
--- a/pkgs/development/libraries/libossp-uuid/default.nix
+++ b/pkgs/development/libraries/libossp-uuid/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [
     "ac_cv_va_copy=yes"
-  ] ++ lib.optional stdenv.isFreeBSD "--with-pic";
+  ] ++ lib.optional stdenv.hostPlatform.isFreeBSD "--with-pic";
 
   patches = [ ./shtool.patch ];
 
diff --git a/pkgs/development/libraries/libpcap/default.nix b/pkgs/development/libraries/libpcap/default.nix
index 7256e4922605..bfc2e3af7b8e 100644
--- a/pkgs/development/libraries/libpcap/default.nix
+++ b/pkgs/development/libraries/libpcap/default.nix
@@ -30,18 +30,18 @@ stdenv.mkDerivation rec {
     hash = "sha256-7RmgOD+tcuOtQ1/SOdfNgNZJFrhyaVUBWdIORxYOvl8=";
   };
 
-  buildInputs = lib.optionals stdenv.isLinux [ libnl ]
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libnl ]
     ++ lib.optionals withRemote [ libxcrypt ];
 
   nativeBuildInputs = [ flex bison ]
-    ++ lib.optionals stdenv.isLinux [ pkg-config ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ]
     ++ lib.optionals withBluez [ bluez.dev ];
 
   # We need to force the autodetection because detection doesn't
   # work in pure build environments.
   configureFlags = [
-    "--with-pcap=${if stdenv.isLinux then "linux" else "bpf"}"
-  ] ++ lib.optionals stdenv.isDarwin [
+    "--with-pcap=${if stdenv.hostPlatform.isLinux then "linux" else "bpf"}"
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--disable-universal"
   ] ++ lib.optionals withRemote [
     "--enable-remote"
diff --git a/pkgs/development/libraries/libphonenumber/default.nix b/pkgs/development/libraries/libphonenumber/default.nix
index 5e23947ed3bc..616b5de5deb6 100644
--- a/pkgs/development/libraries/libphonenumber/default.nix
+++ b/pkgs/development/libraries/libphonenumber/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation (finalAttrs: {
     boost
     icu
     protobuf
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Foundation
   ];
 
diff --git a/pkgs/development/libraries/libpipeline/default.nix b/pkgs/development/libraries/libpipeline/default.nix
index 3aeb79b46af8..885c9044332c 100644
--- a/pkgs/development/libraries/libpipeline/default.nix
+++ b/pkgs/development/libraries/libpipeline/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-uLRRlJiQIqeewTF/ZKKnWxVRsqVb6gb2dwTLKi5GkLA=";
   };
 
-  patches = lib.optionals stdenv.isDarwin [ ./fix-on-osx.patch ];
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [ ./fix-on-osx.patch ];
 
   # necessary to build on FreeBSD native pending inclusion of
   # https://git.savannah.gnu.org/cgit/config.git/commit/?id=e4786449e1c26716e3f9ea182caf472e4dbc96e0
diff --git a/pkgs/development/libraries/libplacebo/default.nix b/pkgs/development/libraries/libplacebo/default.nix
index 0ffa7b2828f3..159037bec832 100644
--- a/pkgs/development/libraries/libplacebo/default.nix
+++ b/pkgs/development/libraries/libplacebo/default.nix
@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
     (lib.mesonEnable "glslang" false) # rely on shaderc for GLSL compilation instead
     (lib.mesonEnable "vk-proc-addr" vulkanSupport)
     (lib.mesonOption "vulkan-registry" "${vulkan-headers}/share/vulkan/registry/vk.xml")
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     (lib.mesonEnable "unwind" false) # libplacebo doesn’t build with `darwin.libunwind`
   ];
 
diff --git a/pkgs/development/libraries/libpng/default.nix b/pkgs/development/libraries/libpng/default.nix
index 11e3fb31604f..57b75a949b7d 100644
--- a/pkgs/development/libraries/libpng/default.nix
+++ b/pkgs/development/libraries/libpng/default.nix
@@ -21,7 +21,7 @@ in stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-alygZSOSotfJ2yrltAIQhDwLvAgcvUEIJasAzFnxSmw=";
   };
   postPatch = whenPatched "gunzip < ${patch_src} | patch -Np1"
-  + lib.optionalString stdenv.isFreeBSD ''
+  + lib.optionalString stdenv.hostPlatform.isFreeBSD ''
 
     sed -i 1i'int feenableexcept(int __mask);' contrib/libtests/pngvalid.c
   '';
diff --git a/pkgs/development/libraries/libqglviewer/default.nix b/pkgs/development/libraries/libqglviewer/default.nix
index fd10ccc5375c..ec2234bb9a28 100644
--- a/pkgs/development/libraries/libqglviewer/default.nix
+++ b/pkgs/development/libraries/libqglviewer/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ qmake ];
   buildInputs = [ qtbase libGLU ]
-    ++ lib.optional stdenv.isDarwin AGL;
+    ++ lib.optional stdenv.hostPlatform.isDarwin AGL;
 
   dontWrapQtApps = true;
 
diff --git a/pkgs/development/libraries/librasterlite2/default.nix b/pkgs/development/libraries/librasterlite2/default.nix
index de9fa02d44db..a1655dc6a13d 100644
--- a/pkgs/development/libraries/librasterlite2/default.nix
+++ b/pkgs/development/libraries/librasterlite2/default.nix
@@ -71,7 +71,7 @@ stdenv.mkDerivation rec {
     proj
     sqlite
     zstd
-  ] ++ lib.optional stdenv.isDarwin ApplicationServices;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin ApplicationServices;
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/libre/default.nix b/pkgs/development/libraries/libre/default.nix
index fa419830f3c7..ebdf2ec4d8a6 100644
--- a/pkgs/development/libraries/libre/default.nix
+++ b/pkgs/development/libraries/libre/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     SystemConfiguration
   ];
 
diff --git a/pkgs/development/libraries/libredwg/default.nix b/pkgs/development/libraries/libredwg/default.nix
index 6eb06a1ebe67..aff1fc1a1d68 100644
--- a/pkgs/development/libraries/libredwg/default.nix
+++ b/pkgs/development/libraries/libredwg/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     cp ${printVersion} build-aux/git-version-gen
   '';
 
-  preConfigure = lib.optionalString (stdenv.isDarwin && enablePython) ''
+  preConfigure = lib.optionalString (stdenv.hostPlatform.isDarwin && enablePython) ''
     # prevent configure picking up stack_size from distutils.sysconfig
     export PYTHON_EXTRA_LDFLAGS=" "
   '';
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
   configureFlags = lib.optional (!enablePython) "--disable-python";
 
   # FAIL: alive.test
-  doCheck = !stdenv.isLinux;
+  doCheck = !stdenv.hostPlatform.isLinux;
 
   # the "xmlsuite" test requires the libxml2 c library as well as the python module
   nativeCheckInputs = lib.optionals enablePython [ libxml2 libxml2.dev ];
diff --git a/pkgs/development/libraries/libremidi/default.nix b/pkgs/development/libraries/libremidi/default.nix
index 48014bea0741..6717b97203b7 100644
--- a/pkgs/development/libraries/libremidi/default.nix
+++ b/pkgs/development/libraries/libremidi/default.nix
@@ -22,8 +22,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  buildInputs = lib.optional stdenv.isLinux alsa-lib
-    ++ lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux alsa-lib
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreAudio
     CoreFoundation
     CoreMIDI
diff --git a/pkgs/development/libraries/libressl/default.nix b/pkgs/development/libraries/libressl/default.nix
index 9629c0e961a9..f6cf4a6e62c8 100644
--- a/pkgs/development/libraries/libressl/default.nix
+++ b/pkgs/development/libraries/libressl/default.nix
@@ -8,7 +8,7 @@
 }:
 
 let
-  ldLibPathEnvName = if stdenv.isDarwin
+  ldLibPathEnvName = if stdenv.hostPlatform.isDarwin
     then "DYLD_LIBRARY_PATH"
     else "LD_LIBRARY_PATH";
 
diff --git a/pkgs/development/libraries/librsb/default.nix b/pkgs/development/libraries/librsb/default.nix
index d9dc209a7139..4a995cbbe89d 100644
--- a/pkgs/development/libraries/librsb/default.nix
+++ b/pkgs/development/libraries/librsb/default.nix
@@ -83,6 +83,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ KarlJoad ];
     platforms = platforms.all;
     # ./rsb_common.h:56:10: fatal error: 'omp.h' file not found
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/libraries/librsvg/default.nix b/pkgs/development/libraries/librsvg/default.nix
index e8426b97cec5..932d0f19a7d2 100644
--- a/pkgs/development/libraries/librsvg/default.nix
+++ b/pkgs/development/libraries/librsvg/default.nix
@@ -87,7 +87,7 @@ stdenv.mkDerivation (finalAttrs: {
     pango
     libintl
     vala # for share/vala/Makefile.vapigen
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ApplicationServices
     Foundation
     libobjc
@@ -104,7 +104,7 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.enableFeature withIntrospection "vala")
 
     "--enable-always-build-tests"
-  ] ++ lib.optional stdenv.isDarwin "--disable-Bsymbolic"
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "--disable-Bsymbolic"
     ++ lib.optional (stdenv.buildPlatform != stdenv.hostPlatform) "RUST_TARGET=${stdenv.hostPlatform.rust.rustcTarget}";
 
   doCheck = false; # all tests fail on libtool-generated rsvg-convert not being able to find coreutils
@@ -115,7 +115,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # librsvg only links Foundation, but it also requiers libobjc. The Framework.tbd in the 11.0 SDK
   # reexports libobjc, but the one in the 10.12 SDK does not, so link it manually.
-  env = lib.optionalAttrs (stdenv.isDarwin && stdenv.isx86_64) {
+  env = lib.optionalAttrs (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) {
     NIX_LDFLAGS = "-lobjc";
   };
 
diff --git a/pkgs/development/libraries/librtprocess/default.nix b/pkgs/development/libraries/librtprocess/default.nix
index dabb5e62e45d..a8366f8a92df 100644
--- a/pkgs/development/libraries/librtprocess/default.nix
+++ b/pkgs/development/libraries/librtprocess/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ llvmPackages.openmp ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ llvmPackages.openmp ];
 
   meta = with lib; {
     description = "Highly optimized library for processing RAW images";
diff --git a/pkgs/development/libraries/libsamplerate/default.nix b/pkgs/development/libraries/libsamplerate/default.nix
index 45cd9d091dd0..ec4da5a34784 100644
--- a/pkgs/development/libraries/libsamplerate/default.nix
+++ b/pkgs/development/libraries/libsamplerate/default.nix
@@ -14,13 +14,13 @@ in stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libsndfile ]
-    ++ optionals stdenv.isDarwin [ ApplicationServices CoreServices ];
+    ++ optionals stdenv.hostPlatform.isDarwin [ ApplicationServices CoreServices ];
 
   configureFlags = [ "--disable-fftw" ];
 
   outputs = [ "dev" "out" ];
 
-  postConfigure = optionalString stdenv.isDarwin ''
+  postConfigure = optionalString stdenv.hostPlatform.isDarwin ''
     # need headers from the Carbon.framework in /System/Library/Frameworks to
     # compile this on darwin -- not sure how to handle
     NIX_CFLAGS_COMPILE+=" -I${Carbon}/Library/Frameworks/Carbon.framework/Headers"
diff --git a/pkgs/development/libraries/libsbsms/common.nix b/pkgs/development/libraries/libsbsms/common.nix
index f206f68de42a..7215c23667b8 100644
--- a/pkgs/development/libraries/libsbsms/common.nix
+++ b/pkgs/development/libraries/libsbsms/common.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
     # Fix buidling on platforms other than x86
     (substituteAll {
       src = ./configure.patch;
-      msse = lib.optionalString stdenv.isx86_64 "-msse";
+      msse = lib.optionalString stdenv.hostPlatform.isx86_64 "-msse";
     })
   ];
 
diff --git a/pkgs/development/libraries/libscrypt/default.nix b/pkgs/development/libraries/libscrypt/default.nix
index 6adc2124a3ab..4f8f0deba902 100644
--- a/pkgs/development/libraries/libscrypt/default.nix
+++ b/pkgs/development/libraries/libscrypt/default.nix
@@ -11,10 +11,10 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-QWWqC10bENemG5FYEog87tT7IxDaBJUDqu6j/sO3sYE=";
   };
 
-  buildFlags = lib.optional stdenv.isDarwin "LDFLAGS= LDFLAGS_EXTRA= CFLAGS_EXTRA=";
+  buildFlags = lib.optional stdenv.hostPlatform.isDarwin "LDFLAGS= LDFLAGS_EXTRA= CFLAGS_EXTRA=";
 
   installFlags = [ "PREFIX=$(out)" ];
-  installTargets = lib.optional stdenv.isDarwin "install-osx";
+  installTargets = lib.optional stdenv.hostPlatform.isDarwin "install-osx";
 
   doCheck = true;
 
diff --git a/pkgs/development/libraries/libsecret/default.nix b/pkgs/development/libraries/libsecret/default.nix
index d0b1515d0bad..8ae0754a0abd 100644
--- a/pkgs/development/libraries/libsecret/default.nix
+++ b/pkgs/development/libraries/libsecret/default.nix
@@ -83,7 +83,7 @@ stdenv.mkDerivation rec {
     (lib.mesonBool "gtk_doc" withIntrospection)
   ];
 
-  doCheck = stdenv.isLinux && withIntrospection;
+  doCheck = stdenv.hostPlatform.isLinux && withIntrospection;
   separateDebugInfo = true;
 
   postPatch = ''
diff --git a/pkgs/development/libraries/libsegfault/default.nix b/pkgs/development/libraries/libsegfault/default.nix
index 58896c3e2bc2..e9f014381c5b 100644
--- a/pkgs/development/libraries/libsegfault/default.nix
+++ b/pkgs/development/libraries/libsegfault/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     sha256 = "vKtY6ZEkyK2K+BzJCSo30f9MpERpPlUnarFIlvJ1Giw=";
   };
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin) "-DBOOST_STACKTRACE_GNU_SOURCE_NOT_REQUIRED=1";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isDarwin) "-DBOOST_STACKTRACE_GNU_SOURCE_NOT_REQUIRED=1";
 
   nativeBuildInputs = [
     meson
diff --git a/pkgs/development/libraries/libserialport/default.nix b/pkgs/development/libraries/libserialport/default.nix
index 79f46ffca1f8..0b3314d9b0e1 100644
--- a/pkgs/development/libraries/libserialport/default.nix
+++ b/pkgs/development/libraries/libserialport/default.nix
@@ -10,8 +10,8 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = lib.optional stdenv.isLinux udev
-    ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.IOKit;
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux udev
+    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.IOKit;
 
   meta = with lib; {
     description = "Cross-platform shared library for serial port access";
diff --git a/pkgs/development/libraries/libshumate/default.nix b/pkgs/development/libraries/libshumate/default.nix
index 17783999b53c..f449c5e1c1b7 100644
--- a/pkgs/development/libraries/libshumate/default.nix
+++ b/pkgs/development/libraries/libshumate/default.nix
@@ -66,7 +66,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-Ddemos=true"
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/development/libraries/libsndfile/default.nix b/pkgs/development/libraries/libsndfile/default.nix
index a1ffdae6bb33..ad3ab58b0e13 100644
--- a/pkgs/development/libraries/libsndfile/default.nix
+++ b/pkgs/development/libraries/libsndfile/default.nix
@@ -25,8 +25,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook autogen pkg-config python3 ];
   buildInputs = [ flac lame libmpg123 libogg libopus libvorbis ]
-    ++ lib.optionals stdenv.isLinux [ alsa-lib ]
-    ++ lib.optionals stdenv.isDarwin [ Carbon AudioToolbox ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon AudioToolbox ];
 
   enableParallelBuilding = true;
 
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
 
   # need headers from the Carbon.framework in /System/Library/Frameworks to
   # compile this on darwin -- not sure how to handle
-  preConfigure = lib.optionalString stdenv.isDarwin
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin
     ''
       NIX_CFLAGS_COMPILE+=" -I$SDKROOT/System/Library/Frameworks/Carbon.framework/Versions/A/Headers"
     '';
diff --git a/pkgs/development/libraries/libsodium/default.nix b/pkgs/development/libraries/libsodium/default.nix
index 044450c1825d..a9de633d46d7 100644
--- a/pkgs/development/libraries/libsodium/default.nix
+++ b/pkgs/development/libraries/libsodium/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ autoreconfHook ];
 
-  separateDebugInfo = stdenv.isLinux && stdenv.hostPlatform.libc != "musl";
+  separateDebugInfo = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.libc != "musl";
 
   enableParallelBuilding = true;
   hardeningDisable = lib.optional (stdenv.hostPlatform.isMusl && stdenv.hostPlatform.isx86_32) "stackprotector";
diff --git a/pkgs/development/libraries/libsolv/default.nix b/pkgs/development/libraries/libsolv/default.nix
index a0f5cd610e34..df40a0633988 100644
--- a/pkgs/development/libraries/libsolv/default.nix
+++ b/pkgs/development/libraries/libsolv/default.nix
@@ -10,7 +10,7 @@
 , zchunk
 , zstd
 , expat
-, withRpm ? !stdenv.isDarwin
+, withRpm ? !stdenv.hostPlatform.isDarwin
 , rpm
 , db
 , withConda ? true
diff --git a/pkgs/development/libraries/libsoundio/default.nix b/pkgs/development/libraries/libsoundio/default.nix
index b7de8bf04e88..c4b501628272 100644
--- a/pkgs/development/libraries/libsoundio/default.nix
+++ b/pkgs/development/libraries/libsoundio/default.nix
@@ -14,14 +14,14 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
 
   buildInputs = [ libjack2 ]
-    ++ lib.optionals stdenv.isLinux [ libpulseaudio alsa-lib ]
-    ++ lib.optional stdenv.isDarwin AudioUnit;
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libpulseaudio alsa-lib ]
+    ++ lib.optional stdenv.hostPlatform.isDarwin AudioUnit;
 
-  cmakeFlags = lib.optionals stdenv.isDarwin [
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "-DBUILD_TESTS=OFF"
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-strict-prototypes";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-strict-prototypes";
 
   meta = with lib; {
     description = "Cross platform audio input and output";
diff --git a/pkgs/development/libraries/libsoup/3.x.nix b/pkgs/development/libraries/libsoup/3.x.nix
index 4d5f30cf0b6e..b0588373dee3 100644
--- a/pkgs/development/libraries/libsoup/3.x.nix
+++ b/pkgs/development/libraries/libsoup/3.x.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     glib.out
     brotli
     libnghttp2
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libsysprof-capture
   ];
 
@@ -71,7 +71,7 @@ stdenv.mkDerivation rec {
 
     (lib.mesonEnable "docs" withIntrospection)
     (lib.mesonEnable "introspection" withIntrospection)
-    (lib.mesonEnable "sysprof" stdenv.isLinux)
+    (lib.mesonEnable "sysprof" stdenv.hostPlatform.isLinux)
     (lib.mesonEnable "vapi" withIntrospection)
   ];
 
diff --git a/pkgs/development/libraries/libsoup/default.nix b/pkgs/development/libraries/libsoup/default.nix
index e92c59bc2f2c..a88cd9355326 100644
--- a/pkgs/development/libraries/libsoup/default.nix
+++ b/pkgs/development/libraries/libsoup/default.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
     libpsl
     glib.out
     brotli
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libsysprof-capture
   ];
 
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
     "-Dintrospection=${if withIntrospection then "enabled" else "disabled"}"
     "-Dgnome=${lib.boolToString gnomeSupport}"
     "-Dntlm=disabled"
-  ] ++ lib.optionals (!stdenv.isLinux) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isLinux) [
     "-Dsysprof=disabled"
   ];
 
diff --git a/pkgs/development/libraries/libspatialite/default.nix b/pkgs/development/libraries/libspatialite/default.nix
index 98d184ae703c..8eeec2dbfe0c 100644
--- a/pkgs/development/libraries/libspatialite/default.nix
+++ b/pkgs/development/libraries/libspatialite/default.nix
@@ -40,13 +40,13 @@ stdenv.mkDerivation rec {
     proj
     sqlite
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ];
 
   enableParallelBuilding = true;
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     ln -s $out/lib/mod_spatialite.{so,dylib}
   '';
 
diff --git a/pkgs/development/libraries/libspnav/default.nix b/pkgs/development/libraries/libspnav/default.nix
index d67b12a726b4..6a60bdb7f090 100644
--- a/pkgs/development/libraries/libspnav/default.nix
+++ b/pkgs/development/libraries/libspnav/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "098h1jhlj87axpza5zgy58prp0zn94wyrbch6x0s7q4mzh7dc8ba";
   };
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin fixDarwinDylibNames;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
   buildInputs = [ libX11 ];
 
   patches = [
diff --git a/pkgs/development/libraries/libstatgrab/default.nix b/pkgs/development/libraries/libstatgrab/default.nix
index abda8137f5c8..9b45ffb58ce7 100644
--- a/pkgs/development/libraries/libstatgrab/default.nix
+++ b/pkgs/development/libraries/libstatgrab/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-VoiqSmhVR9cXSoo3PqnY7pJ+dm48wwK97jRSPCxdbBE=";
   };
 
-  buildInputs = lib.optional stdenv.isDarwin IOKit;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin IOKit;
 
   meta = with lib; {
     homepage = "https://www.i-scream.org/libstatgrab/";
diff --git a/pkgs/development/libraries/libsvm/default.nix b/pkgs/development/libraries/libsvm/default.nix
index 9d58109fa8e3..1fd5141c9084 100644
--- a/pkgs/development/libraries/libsvm/default.nix
+++ b/pkgs/development/libraries/libsvm/default.nix
@@ -23,13 +23,13 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "bin" "dev" ];
 
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [ fixDarwinDylibNames ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ fixDarwinDylibNames ];
 
   installPhase =
     let
       libSuff = stdenv.hostPlatform.extensions.sharedLibrary;
       soVersion = "3";
-      libName = if stdenv.isDarwin then "libsvm.${soVersion}${libSuff}" else "libsvm${libSuff}.${soVersion}";
+      libName = if stdenv.hostPlatform.isDarwin then "libsvm.${soVersion}${libSuff}" else "libsvm${libSuff}.${soVersion}";
     in
     ''
       runHook preInstall
diff --git a/pkgs/development/libraries/libtasn1/default.nix b/pkgs/development/libraries/libtasn1/default.nix
index 3c630bac630d..069d8706e74d 100644
--- a/pkgs/development/libraries/libtasn1/default.nix
+++ b/pkgs/development/libraries/libtasn1/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ texinfo perl ];
 
   doCheck = true;
-  preCheck = if stdenv.isDarwin then
+  preCheck = if stdenv.hostPlatform.isDarwin then
     "export DYLD_LIBRARY_PATH=`pwd`/lib/.libs"
   else
     null;
diff --git a/pkgs/development/libraries/libticalcs2/default.nix b/pkgs/development/libraries/libticalcs2/default.nix
index 2488a5bbb0b4..551bfed8fc8b 100644
--- a/pkgs/development/libraries/libticalcs2/default.nix
+++ b/pkgs/development/libraries/libticalcs2/default.nix
@@ -33,9 +33,9 @@ stdenv.mkDerivation rec {
     libticables2
     xz
     bzip2
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     acl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libobjc
   ];
 
diff --git a/pkgs/development/libraries/libtiger/default.nix b/pkgs/development/libraries/libtiger/default.nix
index cd198dac309d..149f5e65fc41 100644
--- a/pkgs/development/libraries/libtiger/default.nix
+++ b/pkgs/development/libraries/libtiger/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ libkate pango cairo ]
-    ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.ApplicationServices;
+    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.ApplicationServices;
 
   meta = {
     homepage = "https://code.google.com/archive/p/libtiger/";
diff --git a/pkgs/development/libraries/libtomcrypt/default.nix b/pkgs/development/libraries/libtomcrypt/default.nix
index 2a32900040d8..568d1a22c6a8 100644
--- a/pkgs/development/libraries/libtomcrypt/default.nix
+++ b/pkgs/development/libraries/libtomcrypt/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   # Fixes a build failure on aarch64-darwin. Define for all Darwin targets for when x86_64-darwin
   # upgrades to a newer SDK.
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-DTARGET_OS_IPHONE=0";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-DTARGET_OS_IPHONE=0";
 
   patches = [
     (fetchpatch {
diff --git a/pkgs/development/libraries/libtommath/default.nix b/pkgs/development/libraries/libtommath/default.nix
index 2501bc827fae..56225f96de8c 100644
--- a/pkgs/development/libraries/libtommath/default.nix
+++ b/pkgs/development/libraries/libtommath/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   makefile = "makefile.shared";
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-DTARGET_OS_IPHONE=0";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) "-DTARGET_OS_IPHONE=0";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/libubox/default.nix b/pkgs/development/libraries/libubox/default.nix
index e48748308bb2..1a3a89a2d71d 100644
--- a/pkgs/development/libraries/libubox/default.nix
+++ b/pkgs/development/libraries/libubox/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
     done
   '';
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     "-Wno-error=gnu-folding-constant"
   ]);
 
diff --git a/pkgs/development/libraries/libuchardet/default.nix b/pkgs/development/libraries/libuchardet/default.nix
index 1b54ea948dd0..12f210593107 100644
--- a/pkgs/development/libraries/libuchardet/default.nix
+++ b/pkgs/development/libraries/libuchardet/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  doCheck = !stdenv.isi686; # tests fail on i686
+  doCheck = !stdenv.hostPlatform.isi686; # tests fail on i686
 
   meta = with lib; {
     description = "Mozilla's Universal Charset Detector C/C++ API";
diff --git a/pkgs/development/libraries/libui/default.nix b/pkgs/development/libraries/libui/default.nix
index a798977b1f41..77197986343f 100644
--- a/pkgs/development/libraries/libui/default.nix
+++ b/pkgs/development/libraries/libui/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchFromGitHub, cmake, pkg-config, gtk3, Cocoa }:
 
 let
-  backend   = if stdenv.isDarwin then "darwin" else "unix";
+  backend   = if stdenv.hostPlatform.isDarwin then "darwin" else "unix";
 in
 
 stdenv.mkDerivation rec {
@@ -15,20 +15,20 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake pkg-config ];
-  propagatedBuildInputs = lib.optional stdenv.isLinux gtk3
-    ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+  propagatedBuildInputs = lib.optional stdenv.hostPlatform.isLinux gtk3
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i 's/set(CMAKE_OSX_DEPLOYMENT_TARGET "10.8")//' ./CMakeLists.txt
   '';
 
   installPhase = ''
     mkdir -p $out/{include,lib}
     mkdir -p $out/lib/pkgconfig
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     mv ./out/libui.so.0 $out/lib/
     ln -s $out/lib/libui.so.0 $out/lib/libui.so
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mv ./out/libui.A.dylib $out/lib/
     ln -s $out/lib/libui.A.dylib $out/lib/libui.dylib
   '' + ''
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
       --subst-var-by out $out \
       --subst-var-by version "${version}"
   '';
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id $out/lib/libui.A.dylib $out/lib/libui.A.dylib
   '';
 
diff --git a/pkgs/development/libraries/libuiohook/default.nix b/pkgs/development/libraries/libuiohook/default.nix
index 4fe42dad6c89..7d58b7814958 100644
--- a/pkgs/development/libraries/libuiohook/default.nix
+++ b/pkgs/development/libraries/libuiohook/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config ];
 
   buildInputs =
-    if stdenv.isDarwin then [ AppKit ApplicationServices Carbon ]
+    if stdenv.hostPlatform.isDarwin then [ AppKit ApplicationServices Carbon ]
     else [
       libX11
       libxkbcommon
diff --git a/pkgs/development/libraries/libunarr/default.nix b/pkgs/development/libraries/libunarr/default.nix
index d73bed773dff..c53196afe420 100644
--- a/pkgs/development/libraries/libunarr/default.nix
+++ b/pkgs/development/libraries/libunarr/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-Mo76BOqZbdOJFrEkeozxdqwpuFyvkhdONNMZmN5BdNI=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace CMakeLists.txt \
       --replace "-flto" "" \
       --replace "AppleClang" "Clang"
diff --git a/pkgs/development/libraries/libunistring/default.nix b/pkgs/development/libraries/libunistring/default.nix
index 13ffffe6aa74..abf5f0df2558 100644
--- a/pkgs/development/libraries/libunistring/default.nix
+++ b/pkgs/development/libraries/libunistring/default.nix
@@ -29,8 +29,8 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   strictDeps = true;
-  propagatedBuildInputs = lib.optional (!stdenv.isLinux) libiconv;
-  buildInputs = lib.optionals stdenv.isDarwin [
+  propagatedBuildInputs = lib.optional (!stdenv.hostPlatform.isLinux) libiconv;
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
   nativeBuildInputs = [ updateAutotoolsGnuConfigScriptsHook ];
diff --git a/pkgs/development/libraries/libusb1/default.nix b/pkgs/development/libraries/libusb1/default.nix
index bd8561e0e8a3..f03ae09b2895 100644
--- a/pkgs/development/libraries/libusb1/default.nix
+++ b/pkgs/development/libraries/libusb1/default.nix
@@ -4,7 +4,7 @@
 , autoreconfHook
 , doxygen
 , pkg-config
-, enableUdev ? stdenv.isLinux && !stdenv.hostPlatform.isStatic
+, enableUdev ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isStatic
 , udev
 , libobjc
 , IOKit
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optionals withDocs [ doxygen ];
   propagatedBuildInputs =
     lib.optional enableUdev udev ++
-    lib.optionals stdenv.isDarwin [ libobjc IOKit Security ];
+    lib.optionals stdenv.hostPlatform.isDarwin [ libobjc IOKit Security ];
 
   dontDisableStatic = withStatic;
 
diff --git a/pkgs/development/libraries/libusbsio/default.nix b/pkgs/development/libraries/libusbsio/default.nix
index 090683898a16..21c7e3f1396e 100644
--- a/pkgs/development/libraries/libusbsio/default.nix
+++ b/pkgs/development/libraries/libusbsio/default.nix
@@ -28,17 +28,17 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     pkg-config
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
 
   buildInputs = [
     libusb1
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     AppKit
     CoreFoundation
     IOKit
-  ]) ++ lib.optionals stdenv.isLinux [
+  ]) ++ lib.optionals stdenv.hostPlatform.isLinux [
     systemdMinimal # libudev
   ];
 
diff --git a/pkgs/development/libraries/libuv/default.nix b/pkgs/development/libraries/libuv/default.nix
index a4254921e179..8d1d36344d7e 100644
--- a/pkgs/development/libraries/libuv/default.nix
+++ b/pkgs/development/libraries/libuv/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation (finalAttrs: {
       "tcp_bind6_error_addrinuse" "tcp_bind_error_addrinuse_listen"
       # https://github.com/libuv/libuv/pull/4075#issuecomment-1935572237
       "thread_priority"
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
         # Sometimes: timeout (no output), failed uv_listen. Someone
         # should report these failures to libuv team. There tests should
         # be much more robust.
@@ -71,10 +71,10 @@ stdenv.mkDerivation (finalAttrs: {
         "fs_event_watch_dir_recursive" "fs_event_watch_file"
         "fs_event_watch_file_current_dir" "fs_event_watch_file_exact_path"
         "process_priority" "udp_create_early_bad_bind"
-    ] ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
         # fail on macos < 10.15 (starting in libuv 1.47.0)
         "fs_write_alotof_bufs_with_offset" "fs_write_multiple_bufs" "fs_read_bufs"
-    ] ++ lib.optionals stdenv.isAarch32 [
+    ] ++ lib.optionals stdenv.hostPlatform.isAarch32 [
       # I observe this test failing with some regularity on ARMv7:
       # https://github.com/libuv/libuv/issues/1871
       "shutdown_close_pipe"
diff --git a/pkgs/development/libraries/libva/1.nix b/pkgs/development/libraries/libva/1.nix
index 1a9c7309e542..15e4d0a9e801 100644
--- a/pkgs/development/libraries/libva/1.nix
+++ b/pkgs/development/libraries/libva/1.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
   # TODO: share libs between minimal and !minimal - perhaps just symlink them
 
   # Add FHS paths for non-NixOS applications.
-  configureFlags = lib.optionals stdenv.isLinux [ "--with-drivers-path=${mesa.driverLink}/lib/dri:/usr/lib/dri:/usr/lib32/dri" ]
+  configureFlags = lib.optionals stdenv.hostPlatform.isLinux [ "--with-drivers-path=${mesa.driverLink}/lib/dri:/usr/lib/dri:/usr/lib32/dri" ]
     ++ lib.optionals (!minimal) [ "--enable-glx" ];
 
   installFlags = [ "dummy_drv_video_ladir=$(out)/lib/dri" ];
diff --git a/pkgs/development/libraries/libva/default.nix b/pkgs/development/libraries/libva/default.nix
index 8a41c60b169f..f88404682b44 100644
--- a/pkgs/development/libraries/libva/default.nix
+++ b/pkgs/development/libraries/libva/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [ libdrm ]
     ++ lib.optionals (!minimal) [ libX11 libXext libXfixes wayland libffi libGL ];
 
-  mesonFlags = lib.optionals stdenv.isLinux [
+  mesonFlags = lib.optionals stdenv.hostPlatform.isLinux [
     # Add FHS and Debian paths for non-NixOS applications
     "-Ddriverdir=${mesa.driverLink}/lib/dri:/usr/lib/dri:/usr/lib32/dri:/usr/lib/x86_64-linux-gnu/dri:/usr/lib/i386-linux-gnu/dri"
   ];
diff --git a/pkgs/development/libraries/libvdpau/default.nix b/pkgs/development/libraries/libvdpau/default.nix
index 8c1c3b7c5e9c..75c61995071e 100644
--- a/pkgs/development/libraries/libvdpau/default.nix
+++ b/pkgs/development/libraries/libvdpau/default.nix
@@ -17,9 +17,9 @@ stdenv.mkDerivation rec {
 
   propagatedBuildInputs = [ xorg.libX11 ];
 
-  mesonFlags = lib.optionals stdenv.isLinux [ "-Dmoduledir=${mesa.driverLink}/lib/vdpau" ];
+  mesonFlags = lib.optionals stdenv.hostPlatform.isLinux [ "-Dmoduledir=${mesa.driverLink}/lib/vdpau" ];
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-lX11";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-lX11";
 
   meta = with lib; {
     homepage = "https://www.freedesktop.org/wiki/Software/VDPAU/";
diff --git a/pkgs/development/libraries/libvirt-glib/default.nix b/pkgs/development/libraries/libvirt-glib/default.nix
index b01a9a788bad..c750d2a25551 100644
--- a/pkgs/development/libraries/libvirt-glib/default.nix
+++ b/pkgs/development/libraries/libvirt-glib/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     libvirt
     libxml2
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libcap_ng
   ];
 
diff --git a/pkgs/development/libraries/libvirt/default.nix b/pkgs/development/libraries/libvirt/default.nix
index 56b0b0a39089..f6e5807f6958 100644
--- a/pkgs/development/libraries/libvirt/default.nix
+++ b/pkgs/development/libraries/libvirt/default.nix
@@ -72,14 +72,14 @@
 , enableIscsi ? false
 , openiscsi
 , libiscsi
-, enableXen ? stdenv.isLinux && stdenv.isx86_64
+, enableXen ? stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64
 , xen
-, enableZfs ? stdenv.isLinux
+, enableZfs ? stdenv.hostPlatform.isLinux
 , zfs
 }:
 
 let
-  inherit (stdenv) isDarwin isLinux isx86_64;
+  inherit (stdenv.hostPlatform) isDarwin isLinux isx86_64;
   binPath = lib.makeBinPath ([
     dnsmasq
   ] ++ lib.optionals isLinux [
diff --git a/pkgs/development/libraries/libvncserver/default.nix b/pkgs/development/libraries/libvncserver/default.nix
index a6c78c3262fc..e6b5bf4acb5b 100644
--- a/pkgs/development/libraries/libvncserver/default.nix
+++ b/pkgs/development/libraries/libvncserver/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     libpng
   ] ++ lib.optionals withSystemd [
     systemd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Carbon
   ];
 
diff --git a/pkgs/development/libraries/libvpx/default.nix b/pkgs/development/libraries/libvpx/default.nix
index ef0929a841d8..4f6c91d65c71 100644
--- a/pkgs/development/libraries/libvpx/default.nix
+++ b/pkgs/development/libraries/libvpx/default.nix
@@ -43,7 +43,7 @@
 }:
 
 let
-  inherit (stdenv) is64bit isMips isDarwin isCygwin;
+  inherit (stdenv.hostPlatform) is64bit isMips isDarwin isCygwin;
   inherit (lib) enableFeature optional optionals;
 
   # libvpx darwin targets include darwin version (ie. ARCH-darwinXX-gcc, XX being the darwin version)
@@ -66,8 +66,8 @@ let
 
   kernel =
     # Build system doesn't understand BSD, so pretend to be Linux.
-    /**/ if stdenv.isBSD then "linux"
-    else if stdenv.isDarwin then "darwin${darwinVersion}"
+    /**/ if stdenv.hostPlatform.isBSD then "linux"
+    else if stdenv.hostPlatform.isDarwin then "darwin${darwinVersion}"
     else stdenv.hostPlatform.parsed.kernel.name;
 
   isGeneric =
@@ -76,7 +76,7 @@ let
     || stdenv.hostPlatform.isRiscV;
 
   target =
-    /**/ if (stdenv.isBSD || stdenv.hostPlatform != stdenv.buildPlatform) then
+    /**/ if (stdenv.hostPlatform.isBSD || stdenv.hostPlatform != stdenv.buildPlatform) then
       (if isGeneric then "generic-gnu" else "${cpu}-${kernel}-gcc")
     else null;
 in
diff --git a/pkgs/development/libraries/libwnck/2.nix b/pkgs/development/libraries/libwnck/2.nix
index bc5a89dc120d..890b1a7651a8 100644
--- a/pkgs/development/libraries/libwnck/2.nix
+++ b/pkgs/development/libraries/libwnck/2.nix
@@ -25,6 +25,6 @@ stdenv.mkDerivation rec {
     maintainers = with lib.maintainers; [ johnazoidberg ];
     # ./xutils.h:31:10: fatal error: 'gdk/gdkx.h' file not found
     # #include <gdk/gdkx.h>
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/libraries/libx86/default.nix b/pkgs/development/libraries/libx86/default.nix
index 1abefa8f4374..69b4ec4a32ca 100644
--- a/pkgs/development/libraries/libx86/default.nix
+++ b/pkgs/development/libraries/libx86/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   #  http://www.mail-archive.com/suspend-devel@lists.sourceforge.net/msg02355.html
   makeFlags = [
     "DESTDIR=$(out)"
-  ] ++ lib.optional (!stdenv.isi686) "BACKEND=x86emu";
+  ] ++ lib.optional (!stdenv.hostPlatform.isi686) "BACKEND=x86emu";
 
   preBuild = ''
     sed -i lrmi.c -e 's@defined(__i386__)@(defined(__i386__) || defined(__x86_64__))@'
diff --git a/pkgs/development/libraries/libxkbcommon/default.nix b/pkgs/development/libraries/libxkbcommon/default.nix
index 6994398eaa90..9a0ebd6d59da 100644
--- a/pkgs/development/libraries/libxkbcommon/default.nix
+++ b/pkgs/development/libraries/libxkbcommon/default.nix
@@ -14,7 +14,7 @@
   # To enable the "interactive-wayland" subcommand of xkbcli. This is the
   # wayland equivalent of `xev` on X11.
 , xorg
-, withWaylandTools ? stdenv.isLinux
+, withWaylandTools ? stdenv.hostPlatform.isLinux
 , wayland
 , wayland-protocols
 , wayland-scanner
diff --git a/pkgs/development/libraries/libxklavier/default.nix b/pkgs/development/libraries/libxklavier/default.nix
index 3fa295279f0c..b6a217d9fbf8 100644
--- a/pkgs/development/libraries/libxklavier/default.nix
+++ b/pkgs/development/libraries/libxklavier/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   patches = [
     ./honor-XKB_CONFIG_ROOT.patch
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     (fetchpatch {
       url = "https://gitlab.freedesktop.org/archived-projects/libxklavier/-/commit/1387c21a788ec1ea203c8392ea1460fc29d83f70.patch";
       sha256 = "sha256-fyWu7sVfDv/ozjhLSLCVsv+iNFawWgJqHUsQHHSkQn4=";
diff --git a/pkgs/development/libraries/libxml2/default.nix b/pkgs/development/libraries/libxml2/default.nix
index 82176e4fab89..66f16b11a74e 100644
--- a/pkgs/development/libraries/libxml2/default.nix
+++ b/pkgs/development/libraries/libxml2/default.nix
@@ -49,13 +49,13 @@ stdenv.mkDerivation (finalAttrs: {
     gettext
   ] ++ lib.optionals (pythonSupport && python?isPy3 && python.isPy3) [
     ncurses
-  ] ++ lib.optionals (stdenv.isDarwin && pythonSupport && python?isPy2 && python.isPy2) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && pythonSupport && python?isPy2 && python.isPy2) [
     libintl
   ];
 
   propagatedBuildInputs = [
     findXMLCatalogs
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ] ++ lib.optionals icuSupport [
     icu
@@ -80,7 +80,7 @@ stdenv.mkDerivation (finalAttrs: {
   doCheck =
     (stdenv.hostPlatform == stdenv.buildPlatform) &&
     stdenv.hostPlatform.libc != "musl";
-  preCheck = lib.optional stdenv.isDarwin ''
+  preCheck = lib.optional stdenv.hostPlatform.isDarwin ''
     export DYLD_LIBRARY_PATH="$PWD/.libs:$DYLD_LIBRARY_PATH"
   '';
 
diff --git a/pkgs/development/libraries/libxslt/default.nix b/pkgs/development/libraries/libxslt/default.nix
index f86c6068e2da..34092649067c 100644
--- a/pkgs/development/libraries/libxslt/default.nix
+++ b/pkgs/development/libraries/libxslt/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [
     libxml2.dev libxcrypt
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     gettext
   ] ++ lib.optionals pythonSupport [
     libxml2.py
diff --git a/pkgs/development/libraries/libxsmm/default.nix b/pkgs/development/libraries/libxsmm/default.nix
index eeb9dcf71b4a..3276354240f4 100644
--- a/pkgs/development/libraries/libxsmm/default.nix
+++ b/pkgs/development/libraries/libxsmm/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Library targeting Intel Architecture for specialized dense and sparse matrix operations, and deep learning primitives";
     mainProgram = "libxsmm_gemm_generator";
     license = licenses.bsd3;
diff --git a/pkgs/development/libraries/libyuv/default.nix b/pkgs/development/libraries/libyuv/default.nix
index 68d3b5ff2789..1062d527fa2a 100644
--- a/pkgs/development/libraries/libyuv/default.nix
+++ b/pkgs/development/libraries/libyuv/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   ];
 
   # NEON does not work on aarch64, we disable it
-  cmakeFlags = lib.optionals stdenv.isAarch64 ["-DCMAKE_CXX_FLAGS=-DLIBYUV_DISABLE_NEON"];
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isAarch64 ["-DCMAKE_CXX_FLAGS=-DLIBYUV_DISABLE_NEON"];
 
   buildInputs = [ libjpeg ];
 
diff --git a/pkgs/development/libraries/lief/default.nix b/pkgs/development/libraries/lief/default.nix
index 1f7e8fdf2c49..1e9a95bc4ed5 100644
--- a/pkgs/development/libraries/lief/default.nix
+++ b/pkgs/development/libraries/lief/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
     scikit-build-core
   ];
 
-  env.CXXFLAGS = toString (lib.optional stdenv.isDarwin [ "-faligned-allocation" "-fno-aligned-new" "-fvisibility=hidden" ]);
+  env.CXXFLAGS = toString (lib.optional stdenv.hostPlatform.isDarwin [ "-faligned-allocation" "-fno-aligned-new" "-fvisibility=hidden" ]);
 
   postBuild = ''
     pushd ../api/python
diff --git a/pkgs/development/libraries/lightgbm/default.nix b/pkgs/development/libraries/lightgbm/default.nix
index 4aa28f6461e1..934b0cab5a3e 100644
--- a/pkgs/development/libraries/lightgbm/default.nix
+++ b/pkgs/development/libraries/lightgbm/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake ]
-    ++ lib.optionals stdenv.isDarwin [ llvmPackages.openmp ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ llvmPackages.openmp ]
     ++ lib.optionals openclSupport [ opencl-headers ocl-icd boost ]
     ++ lib.optionals mpiSupport [ openmpi ]
     ++ lib.optionals hdfsSupport [ hadoop ]
diff --git a/pkgs/development/libraries/linbox/default.nix b/pkgs/development/libraries/linbox/default.nix
index ed199914e640..f9258f991361 100644
--- a/pkgs/development/libraries/linbox/default.nix
+++ b/pkgs/development/libraries/linbox/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
   configureFlags = [
     "--with-blas-libs=-lblas"
     "--without-archnative"
-  ] ++ lib.optionals stdenv.isx86_64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isx86_64 [
     # disable SIMD instructions (which are enabled *when available* by default)
     "--${if stdenv.hostPlatform.sse3Support   then "enable" else "disable"}-sse3"
     "--${if stdenv.hostPlatform.ssse3Support  then "enable" else "disable"}-ssse3"
diff --git a/pkgs/development/libraries/linenoise/default.nix b/pkgs/development/libraries/linenoise/default.nix
index a525a3da9a41..13891d08f113 100644
--- a/pkgs/development/libraries/linenoise/default.nix
+++ b/pkgs/development/libraries/linenoise/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation {
   };
 
   nativeBuildInputs = [ validatePkgConfig ]
-    ++ lib.optionals stdenv.isDarwin [ fixDarwinDylibNames ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ fixDarwinDylibNames ];
 
   buildPhase = ''
     runHook preBuild
diff --git a/pkgs/development/libraries/liquid-dsp/default.nix b/pkgs/development/libraries/liquid-dsp/default.nix
index 6667aa4882e0..0700b645e30a 100644
--- a/pkgs/development/libraries/liquid-dsp/default.nix
+++ b/pkgs/development/libraries/liquid-dsp/default.nix
@@ -18,10 +18,10 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-3UKAwhYaYZ42+d+wiW/AB6x5TSOel8d++d3HeZqAg/8=";
   };
 
-  configureFlags = lib.optionals stdenv.isDarwin [ "LIBTOOL=${cctools}/bin/libtool" ];
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "LIBTOOL=${cctools}/bin/libtool" ];
 
   nativeBuildInputs = [ autoreconfHook ]
-    ++ lib.optionals stdenv.isDarwin [ cctools autoSignDarwinBinariesHook fixDarwinDylibNames ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools autoSignDarwinBinariesHook fixDarwinDylibNames ];
 
   meta = {
     homepage = "https://liquidsdr.org/";
diff --git a/pkgs/development/libraries/lmdb/default.nix b/pkgs/development/libraries/lmdb/default.nix
index 7c907e9ef70f..69100b9dffd6 100644
--- a/pkgs/development/libraries/lmdb/default.nix
+++ b/pkgs/development/libraries/lmdb/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
     "CC=${stdenv.cc.targetPrefix}cc"
     "AR=${stdenv.cc.targetPrefix}ar"
   ]
-    ++ lib.optional stdenv.isDarwin "LDFLAGS=-Wl,-install_name,$(out)/lib/liblmdb.so"
+    ++ lib.optional stdenv.hostPlatform.isDarwin "LDFLAGS=-Wl,-install_name,$(out)/lib/liblmdb.so"
     ++ lib.optionals stdenv.hostPlatform.isWindows [ "SOEXT=.dll" "BINEXT=.exe" ];
 
   doCheck = true;
diff --git a/pkgs/development/libraries/loudmouth/default.nix b/pkgs/development/libraries/loudmouth/default.nix
index 21dd9db2797c..e949cd57e62e 100644
--- a/pkgs/development/libraries/loudmouth/default.nix
+++ b/pkgs/development/libraries/loudmouth/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = lib.optionals (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11") [
+  buildInputs = lib.optionals (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11") [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.Foundation
   ];
diff --git a/pkgs/development/libraries/mailcore2/default.nix b/pkgs/development/libraries/mailcore2/default.nix
index ed7406cc52b7..1381a48315df 100644
--- a/pkgs/development/libraries/mailcore2/default.nix
+++ b/pkgs/development/libraries/mailcore2/default.nix
@@ -19,11 +19,11 @@ stdenv.mkDerivation rec {
   buildInputs = [
     libetpan cyrus_sasl libctemplate libuchardet
     html-tidy libxml2 openssl
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     glib
     icu
     libuuid
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
@@ -37,12 +37,12 @@ stdenv.mkDerivation rec {
       --replace buffio.h tidybuffio.h
     substituteInPlace src/core/basetypes/MCString.cpp \
       --replace "xmlErrorPtr" "const xmlError *"
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     substituteInPlace src/core/basetypes/MCICUTypes.h \
       --replace "__CHAR16_TYPE__ UChar" "char16_t UChar"
   '';
 
-  cmakeFlags = lib.optionals (!stdenv.isDarwin) [
+  cmakeFlags = lib.optionals (!stdenv.hostPlatform.isDarwin) [
     "-DBUILD_SHARED_LIBS=ON"
   ];
 
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
     cp src/libMailCore.* $out/lib
   '';
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   checkPhase = ''
     (
       cd unittest
diff --git a/pkgs/development/libraries/mapnik/default.nix b/pkgs/development/libraries/mapnik/default.nix
index c41ebde0241e..7d8848f59b58 100644
--- a/pkgs/development/libraries/mapnik/default.nix
+++ b/pkgs/development/libraries/mapnik/default.nix
@@ -99,7 +99,7 @@ stdenv.mkDerivation rec {
     # Use 'protozero' package.
     (lib.cmakeBool "USE_EXTERNAL_MAPBOX_PROTOZERO" true)
     # macOS builds fail when using memory mapped file cache.
-    (lib.cmakeBool "USE_MEMORY_MAPPED_FILE" (!stdenv.isDarwin))
+    (lib.cmakeBool "USE_MEMORY_MAPPED_FILE" (!stdenv.hostPlatform.isDarwin))
   ];
 
   doCheck = true;
diff --git a/pkgs/development/libraries/matrix-sdk-crypto-nodejs/generic.nix b/pkgs/development/libraries/matrix-sdk-crypto-nodejs/generic.nix
index 63e9861421ab..c0b068499cd3 100644
--- a/pkgs/development/libraries/matrix-sdk-crypto-nodejs/generic.nix
+++ b/pkgs/development/libraries/matrix-sdk-crypto-nodejs/generic.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     nodejs
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   buildPhase = ''
     runHook preBuild
diff --git a/pkgs/development/libraries/medfile/default.nix b/pkgs/development/libraries/medfile/default.nix
index 8c07b2aad31a..296317788d21 100644
--- a/pkgs/development/libraries/medfile/default.nix
+++ b/pkgs/development/libraries/medfile/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation (finalAttrs: {
     substituteInPlace src/*/*.c --replace-warn \
       "#if H5_VERS_MINOR > 12" \
       "#if H5_VERS_MINOR > 14"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Some medfile test files #define _a, which
     # breaks system header files that use _a as a function parameter
     substituteInPlace tests/c/*.c \
diff --git a/pkgs/development/libraries/memorymapping/default.nix b/pkgs/development/libraries/memorymapping/default.nix
index 91af205f0320..1b3c17bc4f8c 100644
--- a/pkgs/development/libraries/memorymapping/default.nix
+++ b/pkgs/development/libraries/memorymapping/default.nix
@@ -40,6 +40,6 @@ stdenv.mkDerivation {
     # Uses BSD-style funopen() to implement glibc-style fmemopen().
     # Add more BSDs if you need to.
     platforms = platforms.darwin;
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/libraries/mesa-glu/default.nix b/pkgs/development/libraries/mesa-glu/default.nix
index 138e7f247c13..bbcc0bb99a0e 100644
--- a/pkgs/development/libraries/mesa-glu/default.nix
+++ b/pkgs/development/libraries/mesa-glu/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   outputs = [ "out" "dev" ];
 
-  mesonFlags = lib.optionals stdenv.isDarwin [
+  mesonFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "-Dgl_provider=gl" # glvnd is default
   ];
 
diff --git a/pkgs/development/libraries/mesa/default.nix b/pkgs/development/libraries/mesa/default.nix
index 94a72143a71f..80eacadd879d 100644
--- a/pkgs/development/libraries/mesa/default.nix
+++ b/pkgs/development/libraries/mesa/default.nix
@@ -55,13 +55,13 @@
     "svga" # VMWare virtualized GPU
     "virgl" # QEMU virtualized GPU (aka VirGL)
     "zink" # generic OpenGL over Vulkan, experimental
-  ] ++ lib.optionals (stdenv.isAarch64 || stdenv.isAarch32) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isAarch64 || stdenv.hostPlatform.isAarch32) [
     "etnaviv" # Vivante GPU designs (mostly NXP/Marvell SoCs)
     "freedreno" # Qualcomm Adreno (all Qualcomm SoCs)
     "lima" # ARM Mali 4xx
     "panfrost" # ARM Mali Midgard and up (T/G series)
     "vc4" # Broadcom VC4 (Raspberry Pi 0-3)
-  ] ++ lib.optionals stdenv.isAarch64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isAarch64 [
     "tegra" # Nvidia Tegra SoCs
     "v3d" # Broadcom VC5 (Raspberry Pi 4)
   ] ++ lib.optionals stdenv.hostPlatform.isx86 [
@@ -78,7 +78,7 @@
     # QEMU virtualized GPU (aka VirGL)
     # Requires ATOMIC_INT_LOCK_FREE == 2.
     "virtio"
-  ] ++ lib.optionals stdenv.isAarch64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isAarch64 [
     "broadcom" # Broadcom VC5 (Raspberry Pi 4, aka V3D)
     "freedreno" # Qualcomm Adreno (all Qualcomm SoCs)
     "imagination-experimental" # PowerVR Rogue (currently N/A)
@@ -203,7 +203,7 @@ in stdenv.mkDerivation {
 
     # Enable Intel RT stuff when available
     (lib.mesonBool "install-intel-clc" true)
-    (lib.mesonEnable "intel-rt" stdenv.isx86_64)
+    (lib.mesonEnable "intel-rt" stdenv.hostPlatform.isx86_64)
     (lib.mesonOption "clang-libdir" "${llvmPackages.clang-unwrapped.lib}/lib")
 
     # Clover, old OpenCL frontend
diff --git a/pkgs/development/libraries/mimalloc/default.nix b/pkgs/development/libraries/mimalloc/default.nix
index 29fd2b662e69..e8259541c27a 100644
--- a/pkgs/development/libraries/mimalloc/default.nix
+++ b/pkgs/development/libraries/mimalloc/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   doCheck = !stdenv.hostPlatform.isStatic;
   preCheck = let
-    ldLibraryPathEnv = if stdenv.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
+    ldLibraryPathEnv = if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
   in ''
     export ${ldLibraryPathEnv}="$(pwd)/build:''${${ldLibraryPathEnv}}"
   '';
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
 
   postInstall = let
     rel = lib.versions.majorMinor version;
-    suffix = if stdenv.isLinux then "${soext}.${rel}" else ".${rel}${soext}";
+    suffix = if stdenv.hostPlatform.isLinux then "${soext}.${rel}" else ".${rel}${soext}";
   in ''
     # first, move headers and cmake files, that's easy
     mkdir -p $dev/lib
diff --git a/pkgs/development/libraries/mimetic/default.nix b/pkgs/development/libraries/mimetic/default.nix
index 668b2fdf10c9..33b6e1b8cae8 100644
--- a/pkgs/development/libraries/mimetic/default.nix
+++ b/pkgs/development/libraries/mimetic/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
       url = "https://github.com/tat/mimetic/commit/bf84940f9021950c80846e6b1a5f8b0b55991b00.patch";
       sha256 = "sha256-1JW9zPg67BgNsdIjK/jp9j7QMg50eRMz5FsDsbbzBlI=";
     })
-  ] ++ lib.optional stdenv.isAarch64 ./narrowing.patch;
+  ] ++ lib.optional stdenv.hostPlatform.isAarch64 ./narrowing.patch;
 
   meta = with lib; {
     description = "MIME handling library";
diff --git a/pkgs/development/libraries/minixml/default.nix b/pkgs/development/libraries/minixml/default.nix
index ebb0f2889738..3438cb9290b6 100644
--- a/pkgs/development/libraries/minixml/default.nix
+++ b/pkgs/development/libraries/minixml/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   # remove the -arch flags which are set by default in the build
-  configureFlags = lib.optionals stdenv.isDarwin [
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "--with-archflags=\"-mmacosx-version-min=10.14\""
   ];
 
diff --git a/pkgs/development/libraries/minizip-ng/default.nix b/pkgs/development/libraries/minizip-ng/default.nix
index fde280137e74..b15997cb436b 100644
--- a/pkgs/development/libraries/minizip-ng/default.nix
+++ b/pkgs/development/libraries/minizip-ng/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-DMZ_BUILD_TESTS=${if finalAttrs.finalPackage.doCheck then "ON" else "OFF"}"
     "-DMZ_BUILD_UNIT_TESTS=${if finalAttrs.finalPackage.doCheck then "ON" else "OFF"}"
     "-DMZ_LIB_SUFFIX='-ng'"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # missing header file
     "-DMZ_LIBCOMP=OFF"
   ];
diff --git a/pkgs/development/libraries/mlt/default.nix b/pkgs/development/libraries/mlt/default.nix
index 2ca4e6b46dc1..d1cd9d068913 100644
--- a/pkgs/development/libraries/mlt/default.nix
+++ b/pkgs/development/libraries/mlt/default.nix
@@ -23,7 +23,7 @@
 , darwin
 , cudaSupport ? config.cudaSupport
 , cudaPackages ? { }
-, enableJackrack ? stdenv.isLinux
+, enableJackrack ? stdenv.hostPlatform.isLinux
 , glib
 , ladspa-sdk
 , ladspaPlugins
@@ -31,7 +31,7 @@
 , python3
 , swig
 , qt ? null
-, enableSDL1 ? stdenv.isLinux
+, enableSDL1 ? stdenv.hostPlatform.isLinux
 , SDL
 , enableSDL2 ? true
 , SDL2
@@ -83,7 +83,7 @@ stdenv.mkDerivation rec {
     rubberband
     sox
     vid-stab
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Accelerate
   ] ++ lib.optionals cudaSupport [
     cudaPackages.cuda_cudart
diff --git a/pkgs/development/libraries/mongoc/default.nix b/pkgs/development/libraries/mongoc/default.nix
index 802226c46f8a..fc967445d01c 100644
--- a/pkgs/development/libraries/mongoc/default.nix
+++ b/pkgs/development/libraries/mongoc/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
     icu
     cyrus_sasl
     snappy
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Security
   ];
 
diff --git a/pkgs/development/libraries/mongocxx/default.nix b/pkgs/development/libraries/mongocxx/default.nix
index 5659043e2f62..415e7ca96e3a 100644
--- a/pkgs/development/libraries/mongocxx/default.nix
+++ b/pkgs/development/libraries/mongocxx/default.nix
@@ -10,7 +10,7 @@
 , darwin
 }:
 
-let stdenv = if pkgs.stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else pkgs.stdenv; in
+let stdenv = if pkgs.stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else pkgs.stdenv; in
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "mongocxx";
@@ -38,7 +38,7 @@ stdenv.mkDerivation (finalAttrs: {
     mongoc
     openssl
     cyrus_sasl
-  ] ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
 
   cmakeFlags = [
     "-DCMAKE_CXX_STANDARD=20"
diff --git a/pkgs/development/libraries/movit/default.nix b/pkgs/development/libraries/movit/default.nix
index d2cd26f38bf6..55a4ec26025a 100644
--- a/pkgs/development/libraries/movit/default.nix
+++ b/pkgs/development/libraries/movit/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
     SDL2
     fftw
     gtest
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.OpenGL
     darwin.libobjc
   ];
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
     libepoxy
   ];
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     NIX_LDFLAGS = "-framework OpenGL";
   };
 
diff --git a/pkgs/development/libraries/mpich/default.nix b/pkgs/development/libraries/mpich/default.nix
index a4716a47bb1b..4af559b50758 100644
--- a/pkgs/development/libraries/mpich/default.nix
+++ b/pkgs/development/libraries/mpich/default.nix
@@ -44,12 +44,12 @@ stdenv.mkDerivation  rec {
 
   nativeBuildInputs = [ gfortran python3 ];
   buildInputs = [ perl openssh hwloc ]
-    ++ lib.optional (!stdenv.isDarwin) ch4backend
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) ch4backend
     ++ lib.optional pmixSupport pmix
-    ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Foundation;
+    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Foundation;
 
   # test_double_serializer.test fails on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   preFixup = ''
     # Ensure the default compilers are the ones mpich was built with
diff --git a/pkgs/development/libraries/mpir/default.nix b/pkgs/development/libraries/mpir/default.nix
index 26f22fd9968f..9857317ea188 100644
--- a/pkgs/development/libraries/mpir/default.nix
+++ b/pkgs/development/libraries/mpir/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   ];
 
   configureFlags = [ "--enable-cxx" ]
-    ++ lib.optionals stdenv.isLinux [ "--enable-fat" ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ "--enable-fat" ];
 
   meta = {
     description = "Highly optimised library for bignum arithmetic forked from GMP";
diff --git a/pkgs/development/libraries/mvfst/default.nix b/pkgs/development/libraries/mvfst/default.nix
index 0a784fff339a..7c9d2e8da445 100644
--- a/pkgs/development/libraries/mvfst/default.nix
+++ b/pkgs/development/libraries/mvfst/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  cmakeFlags = lib.optionals stdenv.isDarwin [
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.14" # For aligned allocation
   ];
 
diff --git a/pkgs/development/libraries/mygui/default.nix b/pkgs/development/libraries/mygui/default.nix
index c785e640ccb0..d52eadbba6cd 100644
--- a/pkgs/development/libraries/mygui/default.nix
+++ b/pkgs/development/libraries/mygui/default.nix
@@ -45,12 +45,12 @@ stdenv.mkDerivation rec {
     ois
   ] ++ lib.optionals withOgre [
     ogre
-  ] ++ lib.optionals (!withOgre && stdenv.isLinux) [
+  ] ++ lib.optionals (!withOgre && stdenv.hostPlatform.isLinux) [
     libGL
     libGLU
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libX11
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ];
 
diff --git a/pkgs/development/libraries/ncnn/default.nix b/pkgs/development/libraries/ncnn/default.nix
index ae82d0490be4..f431133c2505 100644
--- a/pkgs/development/libraries/ncnn/default.nix
+++ b/pkgs/development/libraries/ncnn/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
     "-DNCNN_PYTHON=0" # Should be an attribute
   ]
   # Requires setting `Vulkan_LIBRARY` on Darwin. Otherwise the build fails due to missing symbols.
-  ++ lib.optionals stdenv.isDarwin [ "-DVulkan_LIBRARY=-lvulkan" ];
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ "-DVulkan_LIBRARY=-lvulkan" ];
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ vulkan-headers vulkan-loader glslang opencv protobuf ];
diff --git a/pkgs/development/libraries/nco/default.nix b/pkgs/development/libraries/nco/default.nix
index 1b5dced4e81a..3affdfbf5743 100644
--- a/pkgs/development/libraries/nco/default.nix
+++ b/pkgs/development/libraries/nco/default.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation (finalAttrs: {
       --replace "/bin/mv" "${coreutils}/bin/mv"
   '';
 
-  makeFlags = lib.optionals stdenv.isDarwin [ "LIBTOOL=${libtool}/bin/libtool" ];
+  makeFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "LIBTOOL=${libtool}/bin/libtool" ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/ncurses/default.nix b/pkgs/development/libraries/ncurses/default.nix
index 95b427a7bad3..2a4e89d7f3df 100644
--- a/pkgs/development/libraries/ncurses/default.nix
+++ b/pkgs/development/libraries/ncurses/default.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation (finalAttrs: {
   ]);
 
   # Only the C compiler, and explicitly not C++ compiler needs this flag on solaris:
-  CFLAGS = lib.optionalString stdenv.isSunOS "-D_XOPEN_SOURCE_EXTENDED";
+  CFLAGS = lib.optionalString stdenv.hostPlatform.isSunOS "-D_XOPEN_SOURCE_EXTENDED";
 
   strictDeps = true;
 
@@ -77,7 +77,7 @@ stdenv.mkDerivation (finalAttrs: {
     ncurses
   ];
 
-  buildInputs = lib.optional (mouseSupport && stdenv.isLinux) gpm;
+  buildInputs = lib.optional (mouseSupport && stdenv.hostPlatform.isLinux) gpm;
 
   preConfigure = ''
     export PKG_CONFIG_LIBDIR="$dev/lib/pkgconfig"
@@ -90,7 +90,7 @@ stdenv.mkDerivation (finalAttrs: {
       "--with-pkg-config-libdir=$PKG_CONFIG_LIBDIR"
     )
   ''
-  + lib.optionalString stdenv.isSunOS ''
+  + lib.optionalString stdenv.hostPlatform.isSunOS ''
     sed -i -e '/-D__EXTENSIONS__/ s/-D_XOPEN_SOURCE=\$cf_XOPEN_SOURCE//' \
            -e '/CPPFLAGS="$CPPFLAGS/s/ -D_XOPEN_SOURCE_EXTENDED//' \
         configure
@@ -102,7 +102,7 @@ stdenv.mkDerivation (finalAttrs: {
   doCheck = false;
 
   postFixup = let
-    abiVersion-extension = if stdenv.isDarwin then "${abiVersion}.$dylibtype" else "$dylibtype.${abiVersion}"; in
+    abiVersion-extension = if stdenv.hostPlatform.isDarwin then "${abiVersion}.$dylibtype" else "$dylibtype.${abiVersion}"; in
   ''
     # Determine what suffixes our libraries have
     suffix="$(awk -F': ' 'f{print $3; f=0} /default library suffix/{f=1}' config.log)"
diff --git a/pkgs/development/libraries/ndi/default.nix b/pkgs/development/libraries/ndi/default.nix
index b691f2b10afa..78a4f808b4c3 100644
--- a/pkgs/development/libraries/ndi/default.nix
+++ b/pkgs/development/libraries/ndi/default.nix
@@ -3,10 +3,10 @@
 let
   versionJSON = lib.importJSON ./version.json;
   ndiPlatform =
-    if stdenv.isAarch64 then "aarch64-rpi4-linux-gnueabi"
-    else if stdenv.isAarch32 then "arm-rpi2-linux-gnueabihf"
-    else if stdenv.isx86_64 then "x86_64-linux-gnu"
-    else if stdenv.isi686 then "i686-linux-gnu"
+    if stdenv.hostPlatform.isAarch64 then "aarch64-rpi4-linux-gnueabi"
+    else if stdenv.hostPlatform.isAarch32 then "arm-rpi2-linux-gnueabihf"
+    else if stdenv.hostPlatform.isx86_64 then "x86_64-linux-gnu"
+    else if stdenv.hostPlatform.isi686 then "i686-linux-gnu"
     else throw "unsupported platform for NDI SDK";
 in
 stdenv.mkDerivation rec {
diff --git a/pkgs/development/libraries/neon/default.nix b/pkgs/development/libraries/neon/default.nix
index 3185ff4158ee..6bff584ddaef 100644
--- a/pkgs/development/libraries/neon/default.nix
+++ b/pkgs/development/libraries/neon/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-SHLhL4Alct7dSwL4cAZYFLLVFB99va9wju2rgmtRpYo=";
   };
 
-  patches = optionals stdenv.isDarwin [ ./darwin-fix-configure.patch ];
+  patches = optionals stdenv.hostPlatform.isDarwin [ ./darwin-fix-configure.patch ];
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [libxml2 openssl bash]
diff --git a/pkgs/development/libraries/netcdf-cxx4/default.nix b/pkgs/development/libraries/netcdf-cxx4/default.nix
index 08f812a272a2..606e8a86b0c3 100644
--- a/pkgs/development/libraries/netcdf-cxx4/default.nix
+++ b/pkgs/development/libraries/netcdf-cxx4/default.nix
@@ -34,6 +34,6 @@ stdenv.mkDerivation rec {
     homepage = "https://www.unidata.ucar.edu/software/netcdf/";
     license = lib.licenses.free;
     platforms = lib.platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/libraries/netcdf-fortran/default.nix b/pkgs/development/libraries/netcdf-fortran/default.nix
index 0edc956eee60..d9a80768bb61 100644
--- a/pkgs/development/libraries/netcdf-fortran/default.nix
+++ b/pkgs/development/libraries/netcdf-fortran/default.nix
@@ -12,12 +12,12 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ gfortran ];
   buildInputs = [ netcdf hdf5 curl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreFoundation
       CoreServices
       SystemConfiguration
     ];
-  env.NIX_LDFLAGS = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_LDFLAGS = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-F${CoreServices}/Library/Frameworks"
     "-F${SystemConfiguration}/Library/Frameworks"
   ]);
diff --git a/pkgs/development/libraries/nettle/generic.nix b/pkgs/development/libraries/nettle/generic.nix
index 44afdf45513f..b1cf1f5f6bfe 100644
--- a/pkgs/development/libraries/nettle/generic.nix
+++ b/pkgs/development/libraries/nettle/generic.nix
@@ -23,9 +23,9 @@ stdenv.mkDerivation {
     # /usr/include/mp.h from OpenSolaris.  See
     # <https://lists.gnu.org/archive/html/hydra-users/2012-08/msg00000.html>
     # for details.
-    ++ lib.optional stdenv.isSunOS "--with-include-path=${gmp.dev}/include";
+    ++ lib.optional stdenv.hostPlatform.isSunOS "--with-include-path=${gmp.dev}/include";
 
-  doCheck = (stdenv.hostPlatform.system != "i686-cygwin" && !stdenv.isDarwin);
+  doCheck = (stdenv.hostPlatform.system != "i686-cygwin" && !stdenv.hostPlatform.isDarwin);
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/newt/default.nix b/pkgs/development/libraries/newt/default.nix
index 15a834709806..d8adcf63b19d 100644
--- a/pkgs/development/libraries/newt/default.nix
+++ b/pkgs/development/libraries/newt/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     unset CPP
   '';
 
-  configureFlags = lib.optionals stdenv.isDarwin [
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "--disable-nls"
   ];
 
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
     "CROSS_COMPILE=${stdenv.cc.targetPrefix}"
   ];
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id $out/lib/libnewt.so.${version} $out/lib/libnewt.so.${version}
     install_name_tool -change libnewt.so.${version} $out/lib/libnewt.so.${version} $out/bin/whiptail
   '';
diff --git a/pkgs/development/libraries/nghttp2/default.nix b/pkgs/development/libraries/nghttp2/default.nix
index fbe3e2a92f15..19265cbe1608 100644
--- a/pkgs/development/libraries/nghttp2/default.nix
+++ b/pkgs/development/libraries/nghttp2/default.nix
@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
     (lib.enableFeature enableHttp3 "http3")
   ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13") [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13") [
     "-faligned-allocation"
   ]);
 
diff --git a/pkgs/development/libraries/nghttp3/default.nix b/pkgs/development/libraries/nghttp3/default.nix
index 2a264dbe6c46..a32538560177 100644
--- a/pkgs/development/libraries/nghttp3/default.nix
+++ b/pkgs/development/libraries/nghttp3/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   outputs = [ "out" "dev" "doc" ];
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
   ];
 
diff --git a/pkgs/development/libraries/ngtcp2/default.nix b/pkgs/development/libraries/ngtcp2/default.nix
index 8e17a3394dc3..aa5ebc6fbb8b 100644
--- a/pkgs/development/libraries/ngtcp2/default.nix
+++ b/pkgs/development/libraries/ngtcp2/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
     libev
     nghttp3
     quictls
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
   ] ++ lib.optional withJemalloc jemalloc;
 
diff --git a/pkgs/development/libraries/ngtcp2/gnutls.nix b/pkgs/development/libraries/ngtcp2/gnutls.nix
index 1cf06ecb837f..31f69e82198f 100644
--- a/pkgs/development/libraries/ngtcp2/gnutls.nix
+++ b/pkgs/development/libraries/ngtcp2/gnutls.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
   nativeCheckInputs = [ cunit ]
-    ++ lib.optional stdenv.isDarwin ncurses;
+    ++ lib.optional stdenv.hostPlatform.isDarwin ncurses;
 
   passthru.tests = knot-dns.passthru.tests; # the only consumer so far
 
diff --git a/pkgs/development/libraries/nlopt/default.nix b/pkgs/development/libraries/nlopt/default.nix
index 2fae17a23236..4995d98adca7 100644
--- a/pkgs/development/libraries/nlopt/default.nix
+++ b/pkgs/development/libraries/nlopt/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-TgieCX7yUdTAEblzXY/gCN0r6F9TVDh4RdNDjQdXZ1o=";
   };
 
-  nativeBuildInputs = [ cmake ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  nativeBuildInputs = [ cmake ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
   buildInputs = [ octave ];
 
   configureFlags = [
diff --git a/pkgs/development/libraries/nspr/default.nix b/pkgs/development/libraries/nspr/default.nix
index 586c4ddb94fc..efea4a4cc81f 100644
--- a/pkgs/development/libraries/nspr/default.nix
+++ b/pkgs/development/libraries/nspr/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   preConfigure = ''
     cd nspr
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure --replace '@executable_path/' "$out/lib/"
     substituteInPlace configure.in --replace '@executable_path/' "$out/lib/"
   '';
@@ -34,14 +34,14 @@ stdenv.mkDerivation rec {
   configureFlags = [
     "--enable-optimize"
     "--disable-debug"
-  ] ++ lib.optional stdenv.is64bit "--enable-64bit";
+  ] ++ lib.optional stdenv.hostPlatform.is64bit "--enable-64bit";
 
   postInstall = ''
     find $out -name "*.a" -delete
     moveToOutput share "$dev" # just aclocal
   '';
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/nss/generic.nix b/pkgs/development/libraries/nss/generic.nix
index 7ef488cca4c1..9e54ddda866f 100644
--- a/pkgs/development/libraries/nss/generic.nix
+++ b/pkgs/development/libraries/nss/generic.nix
@@ -93,7 +93,7 @@ stdenv.mkDerivation rec {
         --enable-libpkix \
         -j $NIX_BUILD_CORES \
         ${lib.optionalString enableFIPS "--enable-fips"} \
-        ${lib.optionalString stdenv.isDarwin "--clang"} \
+        ${lib.optionalString stdenv.hostPlatform.isDarwin "--clang"} \
         ${lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) "--disable-tests"}
 
       runHook postBuild
@@ -155,7 +155,7 @@ stdenv.mkDerivation rec {
     (lib.optionalString enableFIPS (''
       for libname in freebl3 nssdbm3 softokn3
       do libfile="$out/lib/lib$libname${stdenv.hostPlatform.extensions.sharedLibrary}"'' +
-    (if stdenv.isDarwin
+    (if stdenv.hostPlatform.isDarwin
     then ''
       DYLD_LIBRARY_PATH=$out/lib:${nspr.out}/lib \
     '' else ''
diff --git a/pkgs/development/libraries/nss_wrapper/default.nix b/pkgs/development/libraries/nss_wrapper/default.nix
index 9bec1886abb6..378ebf54c1f7 100644
--- a/pkgs/development/libraries/nss_wrapper/default.nix
+++ b/pkgs/development/libraries/nss_wrapper/default.nix
@@ -17,6 +17,6 @@ stdenv.mkDerivation rec {
     homepage = "https://git.samba.org/?p=nss_wrapper.git;a=summary;";
     license = licenses.bsd3;
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/libraries/ntbtls/default.nix b/pkgs/development/libraries/ntbtls/default.nix
index e04d2ae43537..e1726a874fcd 100644
--- a/pkgs/development/libraries/ntbtls/default.nix
+++ b/pkgs/development/libraries/ntbtls/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   outputs = [ "dev" "out" ];
 
   buildInputs = [ libgcrypt libgpg-error libksba zlib ]
-    ++ lib.optional stdenv.isDarwin gettext;
+    ++ lib.optional stdenv.hostPlatform.isDarwin gettext;
 
   postInstall = ''
     moveToOutput "bin/ntbtls-config" $dev
diff --git a/pkgs/development/libraries/numcpp/default.nix b/pkgs/development/libraries/numcpp/default.nix
index b8dea0f3662b..34dd82c15076 100644
--- a/pkgs/development/libraries/numcpp/default.nix
+++ b/pkgs/development/libraries/numcpp/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-DBUILD_MULTIPLE_TEST=ON"
   ];
 
-  doCheck = !stdenv.isDarwin && !stdenv.hostPlatform.isStatic;
+  doCheck = !stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isStatic;
 
   postInstall = ''
     substituteInPlace $out/share/NumCpp/cmake/NumCppConfig.cmake \
diff --git a/pkgs/development/libraries/oatpp/default.nix b/pkgs/development/libraries/oatpp/default.nix
index 54e821b17848..10b44bdac572 100644
--- a/pkgs/development/libraries/oatpp/default.nix
+++ b/pkgs/development/libraries/oatpp/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
 
   # Tests fail on darwin. See https://github.com/NixOS/nixpkgs/pull/105419#issuecomment-735826894
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     homepage = "https://oatpp.io/";
diff --git a/pkgs/development/libraries/ode/default.nix b/pkgs/development/libraries/ode/default.nix
index 8b426654147f..2906c3428342 100644
--- a/pkgs/development/libraries/ode/default.nix
+++ b/pkgs/development/libraries/ode/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-uode3RZFcJWHle6qcPFIU7/DTMmHH4rd6NpH4SvVRnk=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.GLUT
   ];
diff --git a/pkgs/development/libraries/odpic/default.nix b/pkgs/development/libraries/odpic/default.nix
index 92b943dbdf2f..831c8a4e2afd 100644
--- a/pkgs/development/libraries/odpic/default.nix
+++ b/pkgs/development/libraries/odpic/default.nix
@@ -17,19 +17,19 @@ stdenv.mkDerivation {
     sha256 = "sha256-Ez9B89I008YMu1s/8J0V4bydkooth+O5846Fmwl4FsA=";
   };
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin fixDarwinDylibNames;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   buildInputs = [ oracle-instantclient ]
-    ++ lib.optionals stdenv.isLinux [ libaio ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libaio ];
 
   dontPatchELF = true;
   makeFlags = [ "PREFIX=$(out)" "CC=${stdenv.cc.targetPrefix}cc" "LD=${stdenv.cc.targetPrefix}cc" ];
 
   postFixup = ''
-    ${lib.optionalString (stdenv.isLinux) ''
+    ${lib.optionalString (stdenv.hostPlatform.isLinux) ''
       patchelf --set-rpath "${libPath}:$(patchelf --print-rpath $out/lib/libodpic${stdenv.hostPlatform.extensions.sharedLibrary})" $out/lib/libodpic${stdenv.hostPlatform.extensions.sharedLibrary}
     ''}
-    ${lib.optionalString (stdenv.isDarwin) ''
+    ${lib.optionalString (stdenv.hostPlatform.isDarwin) ''
       install_name_tool -add_rpath "${libPath}" $out/lib/libodpic${stdenv.hostPlatform.extensions.sharedLibrary}
     ''}
   '';
diff --git a/pkgs/development/libraries/ogre/default.nix b/pkgs/development/libraries/ogre/default.nix
index c977348e587a..0643fabdd8c6 100644
--- a/pkgs/development/libraries/ogre/default.nix
+++ b/pkgs/development/libraries/ogre/default.nix
@@ -74,7 +74,7 @@ let
       ois
       pugixml
       zziplib
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       libglut
       libGL
       libGLU
@@ -88,7 +88,7 @@ let
       libXt
       libXxf86vm
       xorgproto
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Cocoa
     ] ++ lib.optionals withNvidiaCg [
       nvidia_cg_toolkit
@@ -97,7 +97,7 @@ let
     cmakeFlags = [
       (lib.cmakeBool "OGRE_BUILD_DEPENDENCIES" false)
       (lib.cmakeBool "OGRE_BUILD_SAMPLES" withSamples)
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       (lib.cmakeBool "OGRE_BUILD_LIBS_AS_FRAMEWORKS" false)
     ];
 
diff --git a/pkgs/development/libraries/ois/default.nix b/pkgs/development/libraries/ois/default.nix
index 0a384b03bb2a..435509dee216 100644
--- a/pkgs/development/libraries/ois/default.nix
+++ b/pkgs/development/libraries/ois/default.nix
@@ -13,8 +13,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ libX11 ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa IOKit Kernel ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libX11 ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa IOKit Kernel ];
 
   cmakeFlags = [
     "-DCMAKE_INSTALL_LIBDIR=lib"
diff --git a/pkgs/development/libraries/okapi/default.nix b/pkgs/development/libraries/okapi/default.nix
index b7a75ad6d1b9..06f980e718c8 100644
--- a/pkgs/development/libraries/okapi/default.nix
+++ b/pkgs/development/libraries/okapi/default.nix
@@ -12,7 +12,7 @@ rustPlatform.buildRustPackage rec {
   cargoVendorDir = "vendor";
   doCheck = false;
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   postInstall = ''
     cp -r include $out
diff --git a/pkgs/development/libraries/omorfi/default.nix b/pkgs/development/libraries/omorfi/default.nix
index 6002ea464673..9360b0fdd104 100644
--- a/pkgs/development/libraries/omorfi/default.nix
+++ b/pkgs/development/libraries/omorfi/default.nix
@@ -87,6 +87,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.gpl3;
     maintainers = with maintainers; [ lurkki ];
     # Darwin build fails due to hfst not being found
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/development/libraries/onnxruntime/default.nix b/pkgs/development/libraries/onnxruntime/default.nix
index bb344664e659..9ac43cc4b1d3 100644
--- a/pkgs/development/libraries/onnxruntime/default.nix
+++ b/pkgs/development/libraries/onnxruntime/default.nix
@@ -149,7 +149,7 @@ effectiveStdenv.mkDerivation rec {
     numpy
     pybind11
     packaging
-  ]) ++ lib.optionals effectiveStdenv.isDarwin [
+  ]) ++ lib.optionals effectiveStdenv.hostPlatform.isDarwin [
     Foundation
     libiconv
   ] ++ lib.optionals cudaSupport (with cudaPackages; [
diff --git a/pkgs/development/libraries/openal-soft/default.nix b/pkgs/development/libraries/openal-soft/default.nix
index 496b7ac60fe0..15a33af177ce 100644
--- a/pkgs/development/libraries/openal-soft/default.nix
+++ b/pkgs/development/libraries/openal-soft/default.nix
@@ -1,8 +1,8 @@
 { lib, stdenv, fetchFromGitHub, cmake, pkg-config, removeReferencesTo
-, alsaSupport ? !stdenv.isDarwin, alsa-lib
-, dbusSupport ? !stdenv.isDarwin, dbus
-, pipewireSupport ? !stdenv.isDarwin, pipewire
-, pulseSupport ? !stdenv.isDarwin, libpulseaudio
+, alsaSupport ? !stdenv.hostPlatform.isDarwin, alsa-lib
+, dbusSupport ? !stdenv.hostPlatform.isDarwin, dbus
+, pipewireSupport ? !stdenv.hostPlatform.isDarwin, pipewire
+, pulseSupport ? !stdenv.hostPlatform.isDarwin, libpulseaudio
 , CoreServices, AudioUnit, AudioToolbox
 }:
 
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional dbusSupport dbus
     ++ lib.optional pipewireSupport pipewire
     ++ lib.optional pulseSupport libpulseaudio
-    ++ lib.optionals stdenv.isDarwin [ CoreServices AudioUnit AudioToolbox ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices AudioUnit AudioToolbox ];
 
   cmakeFlags = [
     # Automatically links dependencies without having to rely on dlopen, thus
diff --git a/pkgs/development/libraries/openbsm/default.nix b/pkgs/development/libraries/openbsm/default.nix
index f30fcac869f1..32d7bf074384 100644
--- a/pkgs/development/libraries/openbsm/default.nix
+++ b/pkgs/development/libraries/openbsm/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "0b98359hd8mm585sh145ss828pg2y8vgz38lqrb7nypapiyqdnd1";
   };
 
-  patches = lib.optionals stdenv.isDarwin [ ./bsm-add-audit_token_to_pid.patch ];
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [ ./bsm-add-audit_token_to_pid.patch ];
 
   preConfigure = lib.optionalString (lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11") ''
     MACOSX_DEPLOYMENT_TARGET=10.16
diff --git a/pkgs/development/libraries/opencascade-occt/default.nix b/pkgs/development/libraries/opencascade-occt/default.nix
index a09cacaf3928..e9f3e0794d33 100644
--- a/pkgs/development/libraries/opencascade-occt/default.nix
+++ b/pkgs/development/libraries/opencascade-occt/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
     libXext
     libXmu
     libXi
-  ] ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Cocoa;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Cocoa;
 
   meta = with lib; {
     description = "Open CASCADE Technology, libraries for 3D modeling and numerical simulation";
diff --git a/pkgs/development/libraries/opencl-clang/default.nix b/pkgs/development/libraries/opencl-clang/default.nix
index 341c3f3ecf57..a4d2f115cc67 100644
--- a/pkgs/development/libraries/opencl-clang/default.nix
+++ b/pkgs/development/libraries/opencl-clang/default.nix
@@ -73,7 +73,7 @@ let
       # fix not be able to find clang from PATH
       substituteInPlace cl_headers/CMakeLists.txt \
         --replace " NO_DEFAULT_PATH" ""
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # Uses linker flags that are not supported on Darwin.
       sed -i -e '/SET_LINUX_EXPORTS_FILE/d' CMakeLists.txt
       substituteInPlace CMakeLists.txt \
@@ -107,6 +107,6 @@ stdenv.mkDerivation {
     maintainers = [ ];
     platforms = platforms.all;
     # error: invalid value 'CL3.0' in '-cl-std=CL3.0'
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/libraries/opencollada/default.nix b/pkgs/development/libraries/opencollada/default.nix
index 6ecb76c0eed7..67f18a4a2718 100644
--- a/pkgs/development/libraries/opencollada/default.nix
+++ b/pkgs/development/libraries/opencollada/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ cmake pkg-config ];
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ AGL ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ AGL ]);
 
   propagatedBuildInputs = [ libxml2 pcre ];
 
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     # Drop blanket -Werror as it tends to fail on newer toolchain for
     # minor warnings. In this case it was gcc-13 build failure.
     substituteInPlace DAEValidator/CMakeLists.txt --replace-fail ' -Werror"' '"'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace GeneratedSaxParser/src/GeneratedSaxParserUtils.cpp \
       --replace math.h cmath
   '';
diff --git a/pkgs/development/libraries/opencolorio/1.x.nix b/pkgs/development/libraries/opencolorio/1.x.nix
index 63098028fc64..7d1839163efc 100644
--- a/pkgs/development/libraries/opencolorio/1.x.nix
+++ b/pkgs/development/libraries/opencolorio/1.x.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   # TODO: Investigate whether git can be dropped: It's only used to apply patches
   nativeBuildInputs = [ cmake pkg-config git ];
 
-  buildInputs = [ lcms2 tinyxml ] ++ lib.optional stdenv.isDarwin boost;
+  buildInputs = [ lcms2 tinyxml ] ++ lib.optional stdenv.hostPlatform.isDarwin boost;
 
   postPatch = ''
     substituteInPlace src/core/CMakeLists.txt --replace "-Werror" ""
@@ -28,9 +28,9 @@ stdenv.mkDerivation rec {
     "-DUSE_EXTERNAL_TINYXML=ON"
     # External yaml-cpp 0.6.* not compatible: https://github.com/imageworks/OpenColorIO/issues/517
     "-DUSE_EXTERNAL_YAML=OFF"
-  ] ++ lib.optional stdenv.isDarwin "-DOCIO_USE_BOOST_PTR=ON"
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "-DOCIO_USE_BOOST_PTR=ON"
     ++ lib.optional (!stdenv.hostPlatform.isx86) "-DOCIO_USE_SSE=OFF"
-    ++ lib.optional (stdenv.isDarwin && stdenv.isAarch64) "-DCMAKE_OSX_ARCHITECTURES=arm64";
+    ++ lib.optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) "-DCMAKE_OSX_ARCHITECTURES=arm64";
 
   postInstall = ''
     moveToOutput bin "$bin"
diff --git a/pkgs/development/libraries/opencolorio/default.nix b/pkgs/development/libraries/opencolorio/default.nix
index 3e9302e025f2..76d2b06150ad 100644
--- a/pkgs/development/libraries/opencolorio/default.nix
+++ b/pkgs/development/libraries/opencolorio/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
     ./line-numbers.patch
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # these tests don't like being run headless on darwin. no builtin
     # way of skipping tests so this is what we're reduced to.
     substituteInPlace tests/cpu/Config_tests.cpp \
@@ -75,7 +75,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional (!buildApps) "-DOCIO_BUILD_APPS=OFF";
 
   # precision issues on non-x86
-  doCheck = stdenv.isx86_64;
+  doCheck = stdenv.hostPlatform.isx86_64;
   # Tends to fail otherwise.
   enableParallelChecking = false;
 
diff --git a/pkgs/development/libraries/opencsg/default.nix b/pkgs/development/libraries/opencsg/default.nix
index 6ac83dfa7d92..5aea0da27380 100644
--- a/pkgs/development/libraries/opencsg/default.nix
+++ b/pkgs/development/libraries/opencsg/default.nix
@@ -10,11 +10,11 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ qmake ]
-    ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+    ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   buildInputs = [ glew ]
-    ++ lib.optionals stdenv.isLinux [ libGLU libGL libglut libXmu libXext libX11 ]
-    ++ lib.optional stdenv.isDarwin GLUT;
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libGLU libGL libglut libXmu libXext libX11 ]
+    ++ lib.optional stdenv.hostPlatform.isDarwin GLUT;
 
   doCheck = false;
 
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   postInstall = ''
     install -D copying.txt "$out/share/doc/opencsg/copying.txt"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv $out/bin/*.app $out/Applications
     rmdir $out/bin || true
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
 
   dontWrapQtApps = true;
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     app=$out/Applications/opencsgexample.app/Contents/MacOS/opencsgexample
     install_name_tool -change \
       $(otool -L $app | awk '/opencsg.+dylib/ { print $1 }') \
diff --git a/pkgs/development/libraries/openct/default.nix b/pkgs/development/libraries/openct/default.nix
index e4b6110e1c15..c8cc99b3f543 100644
--- a/pkgs/development/libraries/openct/default.nix
+++ b/pkgs/development/libraries/openct/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/OpenSC/openct/";
     license = licenses.lgpl21;
     description = "Drivers for several smart card readers";
diff --git a/pkgs/development/libraries/opencv/4.x.nix b/pkgs/development/libraries/opencv/4.x.nix
index cca9e8ae1c74..ef0266154bd5 100644
--- a/pkgs/development/libraries/opencv/4.x.nix
+++ b/pkgs/development/libraries/opencv/4.x.nix
@@ -26,7 +26,7 @@
 , libtiff
 , enableWebP ? true
 , libwebp
-, enableEXR ? !stdenv.isDarwin
+, enableEXR ? !stdenv.hostPlatform.isDarwin
 , openexr
 , ilmbase
 , enableJPEG2000 ? true
@@ -35,7 +35,7 @@
 , eigen
 , enableBlas ? true
 , blas
-, enableVA ? !stdenv.isDarwin
+, enableVA ? !stdenv.hostPlatform.isDarwin
 , libva
 , enableContrib ? true
 
@@ -329,10 +329,10 @@ effectiveStdenv.mkDerivation {
     openjpeg
   ] ++ lib.optionals enableFfmpeg [
     ffmpeg
-  ] ++ lib.optionals (enableFfmpeg && effectiveStdenv.isDarwin) [
+  ] ++ lib.optionals (enableFfmpeg && effectiveStdenv.hostPlatform.isDarwin) [
     bzip2
     VideoDecodeAcceleration
-  ] ++ lib.optionals (enableGStreamer && effectiveStdenv.isLinux) [
+  ] ++ lib.optionals (enableGStreamer && effectiveStdenv.hostPlatform.isLinux) [
     elfutils
     gst_all_1.gst-plugins-base
     gst_all_1.gst-plugins-good
@@ -360,7 +360,7 @@ effectiveStdenv.mkDerivation {
     leptonica
   ] ++ lib.optionals enableTbb [
     tbb
-  ] ++ lib.optionals effectiveStdenv.isDarwin [
+  ] ++ lib.optionals effectiveStdenv.hostPlatform.isDarwin [
     bzip2
     AVFoundation
     Cocoa
@@ -457,7 +457,7 @@ effectiveStdenv.mkDerivation {
     "-DCUDA_ARCH_PTX=${lib.last cudaCapabilities}"
 
     "-DNVIDIA_OPTICAL_FLOW_2_0_HEADERS_PATH=${nvidia-optical-flow-sdk}"
-  ] ++ lib.optionals effectiveStdenv.isDarwin [
+  ] ++ lib.optionals effectiveStdenv.hostPlatform.isDarwin [
     "-DWITH_OPENCL=OFF"
     "-DWITH_LAPACK=OFF"
 
@@ -471,7 +471,7 @@ effectiveStdenv.mkDerivation {
     "-DBUILD_JPEG=OFF"
     "-DBUILD_PNG=OFF"
     "-DBUILD_WEBP=OFF"
-  ] ++ lib.optionals (!effectiveStdenv.isDarwin) [
+  ] ++ lib.optionals (!effectiveStdenv.hostPlatform.isDarwin) [
     "-DOPENCL_LIBRARY=${ocl-icd}/lib/libOpenCL.so"
   ] ++ lib.optionals enablePython [
     "-DOPENCV_SKIP_PYTHON_LOADER=ON"
@@ -536,7 +536,7 @@ effectiveStdenv.mkDerivation {
     tests = {
       inherit (gst_all_1) gst-plugins-bad;
     }
-    // lib.optionalAttrs (!effectiveStdenv.isDarwin) { inherit qimgv; }
+    // lib.optionalAttrs (!effectiveStdenv.hostPlatform.isDarwin) { inherit qimgv; }
     // lib.optionalAttrs (!enablePython) { pythonEnabled = pythonPackages.opencv4; }
     // lib.optionalAttrs (effectiveStdenv.buildPlatform != "x86_64-darwin") {
       opencv4-tests = callPackage ./tests.nix {
diff --git a/pkgs/development/libraries/opencv/tests.nix b/pkgs/development/libraries/opencv/tests.nix
index d1966b1a4aa8..dec10c1b13ab 100644
--- a/pkgs/development/libraries/opencv/tests.nix
+++ b/pkgs/development/libraries/opencv/tests.nix
@@ -26,7 +26,7 @@ let
     "video"
     #"videoio" # - a lot of GStreamer warnings and failed tests
     #"dnn" #- some caffe tests failed, probably because github workflow also downloads additional models
-  ] ++ lib.optionals (!stdenv.isAarch64 && enableGStreamer) [ "gapi" ]
+  ] ++ lib.optionals (!stdenv.hostPlatform.isAarch64 && enableGStreamer) [ "gapi" ]
   ++ lib.optionals (enableGtk2 || enableGtk3) [ "highgui" ];
   perfTestNames = [
     "calib3d"
@@ -38,8 +38,8 @@ let
     "photo"
     "stitching"
     "video"
-  ] ++ lib.optionals (!stdenv.isAarch64 && enableGStreamer) [ "gapi" ];
-  testRunner = lib.optionalString (!stdenv.isDarwin) "${lib.getExe xvfb-run} -a ";
+  ] ++ lib.optionals (!stdenv.hostPlatform.isAarch64 && enableGStreamer) [ "gapi" ];
+  testRunner = lib.optionalString (!stdenv.hostPlatform.isDarwin) "${lib.getExe xvfb-run} -a ";
   testsPreparation = ''
     touch $out
     # several tests want a write access, so we have to copy files
diff --git a/pkgs/development/libraries/opendbx/default.nix b/pkgs/development/libraries/opendbx/default.nix
index 9fbb8356679c..ba66ba5be18a 100644
--- a/pkgs/development/libraries/opendbx/default.nix
+++ b/pkgs/development/libraries/opendbx/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Extremely lightweight but extensible database access library written in C";
     mainProgram = "odbx-sql";
     license = licenses.lgpl21;
diff --git a/pkgs/development/libraries/opendht/default.nix b/pkgs/development/libraries/opendht/default.nix
index 322885ac8606..e7408ba37e67 100644
--- a/pkgs/development/libraries/opendht/default.nix
+++ b/pkgs/development/libraries/opendht/default.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
     restinio
     http-parser
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/development/libraries/opendkim/default.nix b/pkgs/development/libraries/opendkim/default.nix
index 00b5d624153a..8425d5a815bf 100644
--- a/pkgs/development/libraries/opendkim/default.nix
+++ b/pkgs/development/libraries/opendkim/default.nix
@@ -16,11 +16,11 @@ stdenv.mkDerivation rec {
     "--with-milter=${libmilter}"
     "ac_cv_func_malloc_0_nonnull=yes"
     "ac_cv_func_realloc_0_nonnull=yes"
-  ] ++ lib.optional stdenv.isDarwin "--with-unbound=${unbound}";
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "--with-unbound=${unbound}";
 
   nativeBuildInputs = [ autoreconfHook pkg-config makeWrapper ];
 
-  buildInputs = [ libbsd openssl libmilter perl ] ++ lib.optional stdenv.isDarwin unbound;
+  buildInputs = [ libbsd openssl libmilter perl ] ++ lib.optional stdenv.hostPlatform.isDarwin unbound;
 
   postInstall = ''
     wrapProgram $out/sbin/opendkim-genkey \
diff --git a/pkgs/development/libraries/openexr/3.nix b/pkgs/development/libraries/openexr/3.nix
index 9e6d6eaa65da..56562f771698 100644
--- a/pkgs/development/libraries/openexr/3.nix
+++ b/pkgs/development/libraries/openexr/3.nix
@@ -41,10 +41,10 @@ stdenv.mkDerivation rec {
 
   # Without 'sse' enforcement tests fail on i686 as due to excessive precision as:
   #   error reading back channel B pixel 21,-76 got -nan expected -nan
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isi686 "-msse2 -mfpmath=sse";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isi686 "-msse2 -mfpmath=sse";
 
   # https://github.com/AcademySoftwareFoundation/openexr/issues/1400
-  doCheck = !stdenv.isAarch32;
+  doCheck = !stdenv.hostPlatform.isAarch32;
 
   passthru.tests = {
     musl = pkgsCross.musl64.openexr_3;
diff --git a/pkgs/development/libraries/openexr/default.nix b/pkgs/development/libraries/openexr/default.nix
index b45557b95c1b..a79759be24f2 100644
--- a/pkgs/development/libraries/openexr/default.nix
+++ b/pkgs/development/libraries/openexr/default.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation rec {
 
   # https://github.com/AcademySoftwareFoundation/openexr/issues/1400
   # https://github.com/AcademySoftwareFoundation/openexr/issues/1281
-  doCheck = !stdenv.isAarch32 && !stdenv.isi686;
+  doCheck = !stdenv.hostPlatform.isAarch32 && !stdenv.hostPlatform.isi686;
 
   meta = with lib; {
     description = "High dynamic-range (HDR) image file format";
diff --git a/pkgs/development/libraries/openfec/default.nix b/pkgs/development/libraries/openfec/default.nix
index 964f5d86f672..8cee39c3a3ab 100644
--- a/pkgs/development/libraries/openfec/default.nix
+++ b/pkgs/development/libraries/openfec/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
       find $dev/include -type f -a ! -iname '*.h' -delete
 
       install -D -m755 -t $out/lib ../bin/Release/libopenfec${so}
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       install_name_tool -id $out/lib/libopenfec${so} $out/lib/libopenfec${so}
     '' + ''
       ln -s libopenfec${so} $out/lib/libopenfec${so}.1
diff --git a/pkgs/development/libraries/openimagedenoise/default.nix b/pkgs/development/libraries/openimagedenoise/default.nix
index ad68505ad609..cfd38708cd9a 100644
--- a/pkgs/development/libraries/openimagedenoise/default.nix
+++ b/pkgs/development/libraries/openimagedenoise/default.nix
@@ -14,7 +14,7 @@
 }:
 
 let
-  stdenv' = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
 in
 stdenv'.mkDerivation (finalAttrs: {
   pname = "openimagedenoise";
@@ -39,11 +39,11 @@ stdenv'.mkDerivation (finalAttrs: {
     python3
     ispc
   ] ++ lib.optional cudaSupport cudaPackages.cuda_nvcc
-    ++ lib.optionals stdenv.isDarwin [ xcodebuild ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcodebuild ];
 
   buildInputs =
     [ tbb ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk_11_0.frameworks;
       [
         Accelerate
diff --git a/pkgs/development/libraries/openjpeg/default.nix b/pkgs/development/libraries/openjpeg/default.nix
index 25b43b3600e9..4af80702b556 100644
--- a/pkgs/development/libraries/openjpeg/default.nix
+++ b/pkgs/development/libraries/openjpeg/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
     ++ lib.optionals jpipServerSupport [ curl fcgi ]
     ++ lib.optional (jpipLibSupport) jdk;
 
-  doCheck = (!stdenv.isAarch64 && !stdenv.hostPlatform.isPower64); # tests fail on aarch64-linux and powerpc64
+  doCheck = (!stdenv.hostPlatform.isAarch64 && !stdenv.hostPlatform.isPower64); # tests fail on aarch64-linux and powerpc64
   nativeCheckInputs = [ jpylyzer ];
   checkPhase = ''
     substituteInPlace ../tools/ctest_scripts/travis-ci.cmake \
diff --git a/pkgs/development/libraries/openldap/default.nix b/pkgs/development/libraries/openldap/default.nix
index e25f0a8c172d..8ca98b386aa2 100644
--- a/pkgs/development/libraries/openldap/default.nix
+++ b/pkgs/development/libraries/openldap/default.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
     libsodium
     libtool
     openssl
-  ] ++ lib.optionals (stdenv.isLinux) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux) [
     libxcrypt # causes linking issues on *-darwin
     systemdMinimal
   ];
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
     "--with-yielding_select=yes"
     "ac_cv_func_memcmp_working=yes"
-  ] ++ lib.optional stdenv.isFreeBSD "--with-pic";
+  ] ++ lib.optional stdenv.hostPlatform.isFreeBSD "--with-pic";
 
   env.NIX_CFLAGS_COMPILE = toString [ "-DLDAPI_SOCK=\"/run/openldap/ldapi\"" ];
 
diff --git a/pkgs/development/libraries/openmpi/default.nix b/pkgs/development/libraries/openmpi/default.nix
index 0ae1118a36b0..a1fb9454561b 100644
--- a/pkgs/development/libraries/openmpi/default.nix
+++ b/pkgs/development/libraries/openmpi/default.nix
@@ -29,7 +29,7 @@
   # Pass PATH/LD_LIBRARY_PATH to point to current mpirun by default
   enablePrefix ? false,
   # Enable libfabric support (necessary for Omnipath networks) on x86_64 linux
-  fabricSupport ? stdenv.isLinux && stdenv.isx86_64,
+  fabricSupport ? stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64,
   # Enable Fortran support
   fortranSupport ? true,
   # AVX/SSE options. See passthru.defaultAvxOptions for the available options.
@@ -75,7 +75,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   outputs =
     [ "out" ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       "man"
       "dev"
     ];
@@ -86,7 +86,7 @@ stdenv.mkDerivation (finalAttrs: {
       libevent
       hwloc
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       libnl
       numactl
       pmix
@@ -95,9 +95,9 @@ stdenv.mkDerivation (finalAttrs: {
       prrte
     ]
     ++ lib.optionals cudaSupport [ cudaPackages.cuda_cudart ]
-    ++ lib.optionals (stdenv.isLinux || stdenv.isFreeBSD) [ rdma-core ]
+    ++ lib.optionals (stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isFreeBSD) [ rdma-core ]
     # needed for internal pmix
-    ++ lib.optionals (!stdenv.isLinux) [ python3 ]
+    ++ lib.optionals (!stdenv.hostPlatform.isLinux) [ python3 ]
     ++ lib.optionals fabricSupport [
       libpsm2
       libfabric
@@ -115,11 +115,11 @@ stdenv.mkDerivation (finalAttrs: {
   configureFlags = [
     (lib.enableFeature cudaSupport "mca-dso")
     (lib.enableFeature fortranSupport "mpi-fortran")
-    (lib.withFeatureAs stdenv.isLinux "libnl" (lib.getDev libnl))
+    (lib.withFeatureAs stdenv.hostPlatform.isLinux "libnl" (lib.getDev libnl))
     "--with-pmix=${lib.getDev pmix}"
     "--with-pmix-libdir=${lib.getLib pmix}/lib"
     # Puts a "default OMPI_PRTERUN" value to mpirun / mpiexec executables
-    (lib.withFeatureAs stdenv.isLinux "prrte" (lib.getBin prrte))
+    (lib.withFeatureAs stdenv.hostPlatform.isLinux "prrte" (lib.getBin prrte))
     (lib.withFeature enableSGE "sge")
     (lib.enableFeature enablePrefix "mpirun-prefix-by-default")
     # TODO: add UCX support, which is recommended to use with cuda for the most robust OpenMPI build
@@ -219,7 +219,7 @@ stdenv.mkDerivation (finalAttrs: {
           # we currently don't perform these substitutions on other platforms,
           # until a Darwin user will care enough about this cross platform
           # related substitution.
-          lib.optionalString stdenv.isLinux ''
+          lib.optionalString stdenv.hostPlatform.isLinux ''
             substituteInPlace "''${!outputDev}/share/openmpi/${part1}${part2}-wrapper-data.txt" \
               --replace-fail \
                 compiler=${lib.elemAt wrapperDataSubstitutions.${part2} 0} \
diff --git a/pkgs/development/libraries/opensaml-cpp/default.nix b/pkgs/development/libraries/opensaml-cpp/default.nix
index 5e7de98efc46..910a8bc82737 100644
--- a/pkgs/development/libraries/opensaml-cpp/default.nix
+++ b/pkgs/development/libraries/opensaml-cpp/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     boost openssl log4shib xercesc xml-security-c xml-tooling-c zlib
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     CoreServices
     SystemConfiguration
   ]);
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [ "--with-xmltooling=${xml-tooling-c}" ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (!stdenv.isDarwin) "-std=c++14";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (!stdenv.hostPlatform.isDarwin) "-std=c++14";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/openscenegraph/default.nix b/pkgs/development/libraries/openscenegraph/default.nix
index 3566e458598c..1b0f4b229d36 100644
--- a/pkgs/development/libraries/openscenegraph/default.nix
+++ b/pkgs/development/libraries/openscenegraph/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config cmake doxygen ];
 
-  buildInputs = lib.optionals (!stdenv.isDarwin) [
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libX11 libXinerama libXrandr libGLU libGL
   ] ++ [
     glib libxml2 pcre zlib
@@ -63,8 +63,8 @@ stdenv.mkDerivation rec {
     ++ lib.optional sdlSupport SDL2
     ++ lib.optional restSupport asio
     ++ lib.optionals withExamples [ fltk ]
-    ++ lib.optionals (!stdenv.isDarwin) [  ]
-    ++ lib.optionals stdenv.isDarwin [ AGL Accelerate Carbon Cocoa Foundation ]
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [  ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AGL Accelerate Carbon Cocoa Foundation ]
     ++ lib.optional (restSupport || colladaSupport) boost
     ;
 
diff --git a/pkgs/development/libraries/openslp/default.nix b/pkgs/development/libraries/openslp/default.nix
index e390cfd932fd..33b01b764709 100644
--- a/pkgs/development/libraries/openslp/default.nix
+++ b/pkgs/development/libraries/openslp/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
     license = licenses.bsd3;
     platforms = platforms.all;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
     knownVulnerabilities = [
       "CVE-2023-29552: UDP Reflection Attack with ampliciation factor of up to 2200"
     ];
diff --git a/pkgs/development/libraries/openssl/default.nix b/pkgs/development/libraries/openssl/default.nix
index 7c0788a673f6..40edcdee6bc3 100644
--- a/pkgs/development/libraries/openssl/default.nix
+++ b/pkgs/development/libraries/openssl/default.nix
@@ -5,7 +5,7 @@
 , enableSSL2 ? false
 , enableSSL3 ? false
 , enableMD2 ? false
-, enableKTLS ? stdenv.isLinux
+, enableKTLS ? stdenv.hostPlatform.isLinux
 , static ? stdenv.hostPlatform.isStatic
 # path to openssl.cnf file. will be placed in $etc/etc/ssl/openssl.cnf to replace the default
 , conf ? null
diff --git a/pkgs/development/libraries/opensubdiv/default.nix b/pkgs/development/libraries/opensubdiv/default.nix
index b5c2847fb9ba..4cee5df5dc3d 100644
--- a/pkgs/development/libraries/opensubdiv/default.nix
+++ b/pkgs/development/libraries/opensubdiv/default.nix
@@ -31,8 +31,8 @@ stdenv.mkDerivation rec {
       glew xorg.libX11 xorg.libXrandr xorg.libXxf86vm xorg.libXcursor
       xorg.libXinerama xorg.libXi
     ]
-    ++ lib.optionals (openclSupport && !stdenv.isDarwin) [ ocl-icd ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+    ++ lib.optionals (openclSupport && !stdenv.hostPlatform.isDarwin) [ ocl-icd ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
       OpenCL
       Cocoa
       CoreVideo
@@ -58,10 +58,10 @@ stdenv.mkDerivation rec {
     [ "-DNO_TUTORIALS=1"
       "-DNO_REGRESSION=1"
       "-DNO_EXAMPLES=1"
-      (lib.cmakeBool "NO_METAL" (!stdenv.isDarwin))
+      (lib.cmakeBool "NO_METAL" (!stdenv.hostPlatform.isDarwin))
       (lib.cmakeBool "NO_OPENCL" (!openclSupport))
       (lib.cmakeBool "NO_CUDA" (!cudaSupport))
-    ] ++ lib.optionals (!stdenv.isDarwin) [
+    ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       "-DGLEW_INCLUDE_DIR=${glew.dev}/include"
       "-DGLEW_LIBRARY=${glew.dev}/lib"
     ] ++ lib.optionals cudaSupport [
diff --git a/pkgs/development/libraries/openvdb/default.nix b/pkgs/development/libraries/openvdb/default.nix
index 2b1fca97f06e..72d2d7dce0c8 100644
--- a/pkgs/development/libraries/openvdb/default.nix
+++ b/pkgs/development/libraries/openvdb/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec
   cmakeFlags = [ "-DOPENVDB_CORE_STATIC=OFF" "-DOPENVDB_BUILD_NANOVDB=ON"];
 
   # error: aligned deallocation function of type 'void (void *, std::align_val_t) noexcept' is only available on macOS 10.13 or newer
-  env = lib.optionalAttrs (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13" && lib.versionAtLeast tbb.version "2021.8.0") {
+  env = lib.optionalAttrs (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13" && lib.versionAtLeast tbb.version "2021.8.0") {
     NIX_CFLAGS_COMPILE = "-faligned-allocation";
   };
 
diff --git a/pkgs/development/libraries/openvino/default.nix b/pkgs/development/libraries/openvino/default.nix
index a1f30277151b..98129c5944d1 100644
--- a/pkgs/development/libraries/openvino/default.nix
+++ b/pkgs/development/libraries/openvino/default.nix
@@ -116,7 +116,7 @@ stdenv.mkDerivation rec {
     (cmakeBool "ENABLE_SAMPLES" false)
 
     # features
-    (cmakeBool "ENABLE_INTEL_CPU" stdenv.isx86_64)
+    (cmakeBool "ENABLE_INTEL_CPU" stdenv.hostPlatform.isx86_64)
     (cmakeBool "ENABLE_JS" false)
     (cmakeBool "ENABLE_LTO" true)
     (cmakeBool "ENABLE_ONEDNN_FOR_GPU" false)
@@ -177,7 +177,7 @@ stdenv.mkDerivation rec {
     homepage = "https://docs.openvinotoolkit.org/";
     license = with licenses; [ asl20 ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # Cannot find macos sdk
+    broken = stdenv.hostPlatform.isDarwin; # Cannot find macos sdk
     maintainers = with maintainers; [ tfmoraes ];
   };
 }
diff --git a/pkgs/development/libraries/oracle-instantclient/default.nix b/pkgs/development/libraries/oracle-instantclient/default.nix
index 87381141d98f..4d6a605bf084 100644
--- a/pkgs/development/libraries/oracle-instantclient/default.nix
+++ b/pkgs/development/libraries/oracle-instantclient/default.nix
@@ -99,12 +99,12 @@ stdenv.mkDerivation {
   inherit pname version srcs;
 
   buildInputs = [ stdenv.cc.cc.lib ]
-    ++ optional stdenv.isLinux libaio
+    ++ optional stdenv.hostPlatform.isLinux libaio
     ++ optional odbcSupport unixODBC;
 
   nativeBuildInputs = [ makeWrapper unzip ]
-    ++ optional stdenv.isLinux autoPatchelfHook
-    ++ optional stdenv.isDarwin fixDarwinDylibNames;
+    ++ optional stdenv.hostPlatform.isLinux autoPatchelfHook
+    ++ optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   outputs = [ "out" "dev" "lib" ];
 
@@ -125,7 +125,7 @@ stdenv.mkDerivation {
     ln -sfn $out/bin/sqlplus $out/bin/sqlplus64
   '';
 
-  postFixup = optionalString stdenv.isDarwin ''
+  postFixup = optionalString stdenv.hostPlatform.isDarwin ''
     for exe in "$out/bin/"* ; do
       if [ ! -L "$exe" ]; then
         install_name_tool -add_rpath "$lib/lib" "$exe"
diff --git a/pkgs/development/libraries/packr/default.nix b/pkgs/development/libraries/packr/default.nix
index 43822d76aa19..d149c48cc563 100644
--- a/pkgs/development/libraries/packr/default.nix
+++ b/pkgs/development/libraries/packr/default.nix
@@ -34,7 +34,7 @@ let p2 = buildGoModule rec {
     #
     # but this package is no longer maintained.
     #
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 };
 p1 = buildGoModule rec {
@@ -66,7 +66,7 @@ p1 = buildGoModule rec {
     #
     # but this package is no longer maintained.
     #
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 };
 in
diff --git a/pkgs/development/libraries/pagmo2/default.nix b/pkgs/development/libraries/pagmo2/default.nix
index b7d3d92db0bb..e39f059e31d2 100644
--- a/pkgs/development/libraries/pagmo2/default.nix
+++ b/pkgs/development/libraries/pagmo2/default.nix
@@ -22,17 +22,17 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ eigen nlopt boost tbb ] ++ lib.optional (!stdenv.isDarwin) ipopt;
+  buildInputs = [ eigen nlopt boost tbb ] ++ lib.optional (!stdenv.hostPlatform.isDarwin) ipopt;
 
   cmakeFlags = [
     "-DPAGMO_BUILD_TESTS=${if runTests then "ON" else "OFF"}"
     "-DPAGMO_WITH_EIGEN3=yes"
     "-DPAGMO_WITH_NLOPT=yes"
     "-DNLOPT_LIBRARY=${nlopt}/lib/libnlopt${stdenv.hostPlatform.extensions.sharedLibrary}"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-DPAGMO_WITH_IPOPT=yes"
     "-DCMAKE_CXX_FLAGS='-fuse-ld=gold'"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # FIXME: fails ipopt test with Invalid_Option on darwin, so disable.
     "-DPAGMO_WITH_IPOPT=no"
     "-DLLVM_USE_LINKER=gold"
diff --git a/pkgs/development/libraries/pango/default.nix b/pkgs/development/libraries/pango/default.nix
index d91552e3799a..4b442a0ff900 100644
--- a/pkgs/development/libraries/pango/default.nix
+++ b/pkgs/development/libraries/pango/default.nix
@@ -16,7 +16,7 @@
 , ninja
 , glib
 , python3
-, x11Support? !stdenv.isDarwin, libXft
+, x11Support? !stdenv.hostPlatform.isDarwin, libXft
 , withIntrospection ? lib.meta.availableOn stdenv.hostPlatform gobject-introspection && stdenv.hostPlatform.emulatorAvailable buildPackages
 , buildPackages, gobject-introspection
 , testers
@@ -50,7 +50,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     fribidi
     libthai
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     ApplicationServices
     Carbon
     CoreGraphics
diff --git a/pkgs/development/libraries/pangolin/default.nix b/pkgs/development/libraries/pangolin/default.nix
index 600c7b0eb058..1dd52ab7ff36 100644
--- a/pkgs/development/libraries/pangolin/default.nix
+++ b/pkgs/development/libraries/pangolin/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
     libtiff
     eigen
   ]
-  ++ lib.optionals stdenv.isDarwin [ Carbon Cocoa ];
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon Cocoa ];
 
   # The tests use cmake's findPackage to find the installed version of
   # pangolin, which isn't what we want (or available).
diff --git a/pkgs/development/libraries/pangomm/2.42.nix b/pkgs/development/libraries/pangomm/2.42.nix
index 267e46c48c3d..ebbaee668563 100644
--- a/pkgs/development/libraries/pangomm/2.42.nix
+++ b/pkgs/development/libraries/pangomm/2.42.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "dev" ];
 
-  nativeBuildInputs = [ pkg-config meson ninja python3 ] ++ lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = [ pkg-config meson ninja python3 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ApplicationServices
   ];
   propagatedBuildInputs = [ pango glibmm cairomm ];
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
   };
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
     description = "C++ interface to the Pango text rendering library";
     homepage    = "https://www.pango.org/";
     license     = with licenses; [ lgpl2 lgpl21 ];
diff --git a/pkgs/development/libraries/pangomm/2.48.nix b/pkgs/development/libraries/pangomm/2.48.nix
index fa4148e06aa0..3b513b889937 100644
--- a/pkgs/development/libraries/pangomm/2.48.nix
+++ b/pkgs/development/libraries/pangomm/2.48.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     meson
     ninja
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ApplicationServices
   ];
 
diff --git a/pkgs/development/libraries/pangomm/default.nix b/pkgs/development/libraries/pangomm/default.nix
index 02a76869cf1e..65dede46ee9e 100644
--- a/pkgs/development/libraries/pangomm/default.nix
+++ b/pkgs/development/libraries/pangomm/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "dev" ];
 
-  nativeBuildInputs = [ pkg-config meson ninja python3 ] ++ lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = [ pkg-config meson ninja python3 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ApplicationServices
   ];
   propagatedBuildInputs = [ pango glibmm cairomm ];
diff --git a/pkgs/development/libraries/partio/default.nix b/pkgs/development/libraries/partio/default.nix
index 05c8abfafb2a..2c117bdabb90 100644
--- a/pkgs/development/libraries/partio/default.nix
+++ b/pkgs/development/libraries/partio/default.nix
@@ -39,10 +39,10 @@ stdenv.mkDerivation rec {
     swig
     xorg.libXi
     xorg.libXmu
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
     darwin.apple_sdk.frameworks.GLUT
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libglut
     libGLU
     libGL
diff --git a/pkgs/development/libraries/pc-ble-driver/default.nix b/pkgs/development/libraries/pc-ble-driver/default.nix
index 7a7b8475d7c4..0391b72ada89 100644
--- a/pkgs/development/libraries/pc-ble-driver/default.nix
+++ b/pkgs/development/libraries/pc-ble-driver/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [
     "-DNRF_BLE_DRIVER_VERSION=${version}"
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     "-DARCH=arm64"
   ];
 
@@ -39,9 +39,9 @@ stdenv.mkDerivation rec {
 
   propagatedBuildInputs = [
 
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     IOKit
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     udev
   ];
 
diff --git a/pkgs/development/libraries/pcaudiolib/default.nix b/pkgs/development/libraries/pcaudiolib/default.nix
index 347e8b5cdf2c..1152283b1f2c 100644
--- a/pkgs/development/libraries/pcaudiolib/default.nix
+++ b/pkgs/development/libraries/pcaudiolib/default.nix
@@ -10,7 +10,7 @@
 , pkg-config
 , portaudio
 , which
-, pulseaudioSupport ? config.pulseaudio or stdenv.isLinux
+, pulseaudioSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -35,12 +35,12 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     portaudio
   ]
-  ++ lib.optional stdenv.isLinux alsa-lib
+  ++ lib.optional stdenv.hostPlatform.isLinux alsa-lib
   ++ lib.optional pulseaudioSupport libpulseaudio;
 
   # touch ChangeLog to avoid below error on darwin:
   # Makefile.am: error: required file './ChangeLog.md' not found
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     touch ChangeLog
   '' + ''
     ./autogen.sh
diff --git a/pkgs/development/libraries/pcg-c/default.nix b/pkgs/development/libraries/pcg-c/default.nix
index ced4e04c0b87..3ad9df8b64bd 100644
--- a/pkgs/development/libraries/pcg-c/default.nix
+++ b/pkgs/development/libraries/pcg-c/default.nix
@@ -31,6 +31,6 @@ stdenv.mkDerivation rec {
     '';
     platforms = lib.platforms.unix;
     maintainers = [ lib.maintainers.linus ];
-    broken = stdenv.isi686; # https://github.com/imneme/pcg-c/issues/11
+    broken = stdenv.hostPlatform.isi686; # https://github.com/imneme/pcg-c/issues/11
   };
 }
diff --git a/pkgs/development/libraries/pcl/default.nix b/pkgs/development/libraries/pcl/default.nix
index 36e54f873cc7..41639d300ecd 100644
--- a/pkgs/development/libraries/pcl/default.nix
+++ b/pkgs/development/libraries/pcl/default.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
     qtbase
     libXt
   ]
-  ++ lib.optionals stdenv.isDarwin [ Cocoa AGL ];
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa AGL ];
 
   propagatedBuildInputs = [
     boost
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
     vtk
   ];
 
-  cmakeFlags = lib.optionals stdenv.isDarwin [
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks"
   ] ++ lib.optionals cudaSupport [ "-DWITH_CUDA=true" ];
 
diff --git a/pkgs/development/libraries/physfs/default.nix b/pkgs/development/libraries/physfs/default.nix
index 27f7c019ac77..e00be9c841f9 100644
--- a/pkgs/development/libraries/physfs/default.nix
+++ b/pkgs/development/libraries/physfs/default.nix
@@ -16,7 +16,7 @@ let
     nativeBuildInputs = [ cmake doxygen ];
 
     buildInputs = [ zlib ]
-      ++ lib.optionals stdenv.isDarwin [ Foundation ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ Foundation ];
 
     doInstallCheck = true;
 
diff --git a/pkgs/development/libraries/physics/applgrid/default.nix b/pkgs/development/libraries/physics/applgrid/default.nix
index c2dbb1235b48..b083f278af9d 100644
--- a/pkgs/development/libraries/physics/applgrid/default.nix
+++ b/pkgs/development/libraries/physics/applgrid/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ gfortran ];
 
   # For some reason zlib was only needed after bump to gfortran8
-  buildInputs = [ hoppet lhapdf root5 zlib ] ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+  buildInputs = [ hoppet lhapdf root5 zlib ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   patches = [
     ./bad_code.patch
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   preConfigure = ''
     substituteInPlace src/Makefile.in \
       --replace "-L\$(subst /libgfortran.a, ,\$(FRTLIB) )" "-L${gfortran.cc.lib}/lib"
-  '' + (lib.optionalString stdenv.isDarwin ''
+  '' + (lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/Makefile.in \
       --replace "gfortran -print-file-name=libgfortran.a" "gfortran -print-file-name=libgfortran.dylib"
   '');
diff --git a/pkgs/development/libraries/physics/cernlib/default.nix b/pkgs/development/libraries/physics/cernlib/default.nix
index 13d1cb081249..0673aeefffb1 100644
--- a/pkgs/development/libraries/physics/cernlib/default.nix
+++ b/pkgs/development/libraries/physics/cernlib/default.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
     libXt
     libxcrypt
     motif
-  ] ++ lib.optional stdenv.isLinux libnsl;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux libnsl;
 
   setupHook = ./setup-hook.sh;
 
diff --git a/pkgs/development/libraries/physics/geant4/default.nix b/pkgs/development/libraries/physics/geant4/default.nix
index 7349c708e3d9..128d7391fc4a 100644
--- a/pkgs/development/libraries/physics/geant4/default.nix
+++ b/pkgs/development/libraries/physics/geant4/default.nix
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
     "-DGEANT4_USE_SYSTEM_EXPAT=ON"
     "-DGEANT4_USE_SYSTEM_ZLIB=ON"
     "-DGEANT4_BUILD_MULTITHREADED=${if enableMultiThreading then "ON" else "OFF"}"
-  ] ++ lib.optionals (enableOpenGLX11 && stdenv.isDarwin) [
+  ] ++ lib.optionals (enableOpenGLX11 && stdenv.hostPlatform.isDarwin) [
     "-DXQuartzGL_INCLUDE_DIR=${libGLX.dev}/include"
     "-DXQuartzGL_gl_LIBRARY=${libGLX}/lib/libGL.dylib"
   ] ++ lib.optionals (enableMultiThreading && enablePython) [
@@ -128,7 +128,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Toolkit for the simulation of the passage of particles through matter";
     longDescription = ''
       Geant4 is a toolkit for the simulation of the passage of particles through matter.
diff --git a/pkgs/development/libraries/physics/hepmc3/default.nix b/pkgs/development/libraries/physics/hepmc3/default.nix
index 53ee798c17b6..c622d7562001 100644
--- a/pkgs/development/libraries/physics/hepmc3/default.nix
+++ b/pkgs/development/libraries/physics/hepmc3/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   ++ lib.optional withPython python;
 
   # error: invalid version number in 'MACOSX_DEPLOYMENT_TARGET=11.0'
-  preConfigure = lib.optionalString (stdenv.isDarwin && lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11") ''
+  preConfigure = lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11") ''
     MACOSX_DEPLOYMENT_TARGET=10.16
   '';
 
diff --git a/pkgs/development/libraries/physics/herwig/default.nix b/pkgs/development/libraries/physics/herwig/default.nix
index ef7ce7ce586d..c18ff9bef84d 100644
--- a/pkgs/development/libraries/physics/herwig/default.nix
+++ b/pkgs/development/libraries/physics/herwig/default.nix
@@ -35,6 +35,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Only;
     maintainers = with maintainers; [ veprbl ];
     platforms = platforms.unix;
-    broken = stdenv.isAarch64; # doesn't compile: ignoring return value of 'FILE* freopen...
+    broken = stdenv.hostPlatform.isAarch64; # doesn't compile: ignoring return value of 'FILE* freopen...
   };
 }
diff --git a/pkgs/development/libraries/physics/lhapdf/default.nix b/pkgs/development/libraries/physics/lhapdf/default.nix
index 8111f6168430..26ca234c520c 100644
--- a/pkgs/development/libraries/physics/lhapdf/default.nix
+++ b/pkgs/development/libraries/physics/lhapdf/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   # The Apple SDK only exports locale_t from xlocale.h whereas glibc
   # had decided that xlocale.h should be a part of locale.h
-  postPatch = lib.optionalString (stdenv.isDarwin && stdenv.cc.isGNU) ''
+  postPatch = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.cc.isGNU) ''
     substituteInPlace src/GridPDF.cc --replace '#include <locale>' '#include <xlocale.h>'
   '';
 
diff --git a/pkgs/development/libraries/physics/nlojet/default.nix b/pkgs/development/libraries/physics/nlojet/default.nix
index 4e2d878db00c..6085906758b0 100644
--- a/pkgs/development/libraries/physics/nlojet/default.nix
+++ b/pkgs/development/libraries/physics/nlojet/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   env.CXXFLAGS="-std=c++11";
 
   # error: no member named 'finite' in the global namespace; did you mean simply 'finite'?
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dfinite=isfinite";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) "-Dfinite=isfinite";
 
   meta = {
     homepage    = "http://www.desy.de/~znagy/Site/NLOJet++.html";
diff --git a/pkgs/development/libraries/physics/pythia/default.nix b/pkgs/development/libraries/physics/pythia/default.nix
index 0eb45943e0aa..55ba50f2ae31 100644
--- a/pkgs/development/libraries/physics/pythia/default.nix
+++ b/pkgs/development/libraries/physics/pythia/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ rsync ]
-    ++ lib.optionals stdenv.isDarwin [ fixDarwinDylibNames ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ fixDarwinDylibNames ];
   buildInputs = [ boost fastjet hepmc zlib lhapdf ];
 
   configureFlags = [
diff --git a/pkgs/development/libraries/pixman/default.nix b/pkgs/development/libraries/pixman/default.nix
index 71c0b7d47037..dbf742ab81f2 100644
--- a/pkgs/development/libraries/pixman/default.nix
+++ b/pkgs/development/libraries/pixman/default.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-Diwmmxt=disabled"
   ]
   # Disable until https://gitlab.freedesktop.org/pixman/pixman/-/issues/46 is resolved
-  ++ lib.optional (stdenv.isAarch64 && !stdenv.cc.isGNU) "-Da64-neon=disabled";
+  ++ lib.optional (stdenv.hostPlatform.isAarch64 && !stdenv.cc.isGNU) "-Da64-neon=disabled";
 
   preConfigure = ''
     # https://gitlab.freedesktop.org/pixman/pixman/-/issues/62
@@ -61,7 +61,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   enableParallelBuilding = true;
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postInstall = glib.flattenInclude;
 
diff --git a/pkgs/development/libraries/plplot/default.nix b/pkgs/development/libraries/plplot/default.nix
index b060351a2f26..d49b8da211d8 100644
--- a/pkgs/development/libraries/plplot/default.nix
+++ b/pkgs/development/libraries/plplot/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
 
   buildInputs =
     lib.optional enableWX wxGTK32
-    ++ lib.optional (enableWX && stdenv.isDarwin) Cocoa
+    ++ lib.optional (enableWX && stdenv.hostPlatform.isDarwin) Cocoa
     ++ lib.optional enableXWin xorg.libX11
     ++ lib.optionals enablePNG [
       cairo
diff --git a/pkgs/development/libraries/pmix/default.nix b/pkgs/development/libraries/pmix/default.nix
index 69e86acfef23..486164904b2b 100644
--- a/pkgs/development/libraries/pmix/default.nix
+++ b/pkgs/development/libraries/pmix/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
     fetchSubmodules = true;
   };
 
-  outputs = [ "out" ] ++ lib.optionals stdenv.isLinux [ "dev" ];
+  outputs = [ "out" ] ++ lib.optionals stdenv.hostPlatform.isLinux [ "dev" ];
 
   postPatch = ''
     patchShebangs ./autogen.pl
@@ -82,7 +82,7 @@ stdenv.mkDerivation (finalAttrs: {
     # From some reason the Darwin build doesn't include this file, so we
     # currently disable this substitution for any non-Linux platform, until a
     # Darwin user will care enough about this cross platform fix.
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       # Pin the compiler to the current version in a cross compiler friendly way.
       # Same pattern as for openmpi (see https://github.com/NixOS/nixpkgs/pull/58964#discussion_r275059427).
       substituteInPlace "''${!outputDev}"/share/pmix/pmixcc-wrapper-data.txt \
diff --git a/pkgs/development/libraries/png++/default.nix b/pkgs/development/libraries/png++/default.nix
index dfd74e495e76..e3aa6af942e2 100644
--- a/pkgs/development/libraries/png++/default.nix
+++ b/pkgs/development/libraries/png++/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   propagatedBuildInputs = [ libpng ];
 
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace error.hpp --replace "#if (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE" "#if (__clang__ || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE"
   '' + ''
     sed "s|\(PNGPP := .\)|PREFIX := ''${out}\n\\1|" -i Makefile
diff --git a/pkgs/development/libraries/polkit-qt-1/default.nix b/pkgs/development/libraries/polkit-qt-1/default.nix
index b663c865d233..0fb66ccc7c3d 100644
--- a/pkgs/development/libraries/polkit-qt-1/default.nix
+++ b/pkgs/development/libraries/polkit-qt-1/default.nix
@@ -27,7 +27,7 @@ mkDerivation rec {
     glib
     pcre
     polkit
-  ] ++ lib.optionals stdenv.isLinux [ libselinux libsepol util-linux ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ libselinux libsepol util-linux ];
 
   meta = with lib; {
     description = "Qt wrapper around PolKit";
diff --git a/pkgs/development/libraries/polkit/default.nix b/pkgs/development/libraries/polkit/default.nix
index dd3c6aaea354..17b325f52d8f 100644
--- a/pkgs/development/libraries/polkit/default.nix
+++ b/pkgs/development/libraries/polkit/default.nix
@@ -29,7 +29,7 @@
 # Not yet investigated; it may be due to the "Make netgroup support optional"
 # patch not updating the tests correctly yet, or doing something wrong,
 # or being unrelated to that.
-, doCheck ? (stdenv.isLinux && !stdenv.hostPlatform.isMusl)
+, doCheck ? (stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isMusl)
 }:
 
 let
@@ -93,7 +93,7 @@ stdenv.mkDerivation rec {
     pam
     dbus
     duktape
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     # On Linux, fall back to elogind when systemd support is off.
     (if useSystemd then systemdMinimal else elogind)
   ];
@@ -127,7 +127,7 @@ stdenv.mkDerivation rec {
     "-Dtests=${lib.boolToString doCheck}"
     "-Dgtk_doc=${lib.boolToString withIntrospection}"
     "-Dman=true"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-Dsession_tracking=${if useSystemd then "libsystemd-login" else "libelogind"}"
   ];
 
diff --git a/pkgs/development/libraries/poppler/default.nix b/pkgs/development/libraries/poppler/default.nix
index 2893b5e1b044..368c5a06a463 100644
--- a/pkgs/development/libraries/poppler/default.nix
+++ b/pkgs/development/libraries/poppler/default.nix
@@ -126,7 +126,7 @@ stdenv.mkDerivation (finalAttrs: rec {
   dontWrapQtApps = true;
 
   # Workaround #54606
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i -e '1i cmake_policy(SET CMP0025 NEW)' CMakeLists.txt
   '';
 
diff --git a/pkgs/development/libraries/popt/default.nix b/pkgs/development/libraries/popt/default.nix
index e97629b0dfd0..282203a98af7 100644
--- a/pkgs/development/libraries/popt/default.nix
+++ b/pkgs/development/libraries/popt/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ updateAutotoolsGnuConfigScriptsHook ];
 
-  patches = lib.optionals stdenv.isCygwin [
+  patches = lib.optionals stdenv.hostPlatform.isCygwin [
     ./1.16-cygwin.patch
     ./1.16-vpath.patch
   ] ++ lib.optionals stdenv.hostPlatform.isMinGW [
diff --git a/pkgs/development/libraries/portaudio/default.nix b/pkgs/development/libraries/portaudio/default.nix
index a109aad97b9d..6d338b0f67e0 100644
--- a/pkgs/development/libraries/portaudio/default.nix
+++ b/pkgs/development/libraries/portaudio/default.nix
@@ -22,13 +22,13 @@ stdenv.mkDerivation rec {
 
   strictDeps = true;
   nativeBuildInputs = [ pkg-config which ];
-  buildInputs = [ libjack2 ] ++ lib.optionals (!stdenv.isDarwin) [ alsa-lib ];
+  buildInputs = [ libjack2 ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ alsa-lib ];
 
   configureFlags = [ "--disable-mac-universal" "--enable-cxx" ];
 
   env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=nullability-inferred-on-nested-type -Wno-error=nullability-completeness-on-arrays -Wno-error=implicit-const-int-float-conversion";
 
-  propagatedBuildInputs = lib.optionals stdenv.isDarwin [ AudioUnit AudioToolbox CoreAudio CoreServices Carbon ];
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ AudioUnit AudioToolbox CoreAudio CoreServices Carbon ];
 
   # Disable parallel build as it fails as:
   #   make: *** No rule to make target '../../../lib/libportaudio.la',
@@ -45,10 +45,10 @@ stdenv.mkDerivation rec {
   # not sure why, but all the headers seem to be installed by the make install
   installPhase = ''
     make install
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     # fixup .pc file to find alsa library
     sed -i "s|-lasound|-L${alsa-lib.out}/lib -lasound|" "$out/lib/pkgconfig/"*.pc
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     cp include/pa_mac_core.h $out/include/pa_mac_core.h
   '';
 
diff --git a/pkgs/development/libraries/portmidi/default.nix b/pkgs/development/libraries/portmidi/default.nix
index 8e743f6a54b3..eac2a369fd0b 100644
--- a/pkgs/development/libraries/portmidi/default.nix
+++ b/pkgs/development/libraries/portmidi/default.nix
@@ -27,9 +27,9 @@ stdenv.mkDerivation rec {
   '';
 
   nativeBuildInputs = [ unzip cmake ];
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Carbon CoreAudio CoreFoundation CoreMIDI CoreServices
   ];
 
diff --git a/pkgs/development/libraries/ppl/default.nix b/pkgs/development/libraries/ppl/default.nix
index 863ffed42932..37e5f78c6027 100644
--- a/pkgs/development/libraries/ppl/default.nix
+++ b/pkgs/development/libraries/ppl/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation {
   propagatedBuildInputs = [ gmpxx ];
 
   configureFlags = [ "--disable-watchdog" ] ++
-    lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isDarwin [
       "CPPFLAGS=-fexceptions"
       "--disable-ppl_lcdd" "--disable-ppl_lpsol" "--disable-ppl_pips"
     ];
diff --git a/pkgs/development/libraries/precice/default.nix b/pkgs/development/libraries/precice/default.nix
index 372a2940e0ae..56dd58781bdf 100644
--- a/pkgs/development/libraries/precice/default.nix
+++ b/pkgs/development/libraries/precice/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   ];
 
   env.NIX_CFLAGS_COMPILE = toString (
-    lib.optionals stdenv.isDarwin [ "-D_GNU_SOURCE" ]
+    lib.optionals stdenv.hostPlatform.isDarwin [ "-D_GNU_SOURCE" ]
     # libxml2-2.12 changed const qualifiers
     ++ [ "-fpermissive" ]
   );
diff --git a/pkgs/development/libraries/proj/default.nix b/pkgs/development/libraries/proj/default.nix
index 8fedba3ef08c..615d2590c023 100644
--- a/pkgs/development/libraries/proj/default.nix
+++ b/pkgs/development/libraries/proj/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   preCheck =
     let
-      libPathEnvVar = if stdenv.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
+      libPathEnvVar = if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
     in
       ''
         export HOME=$TMPDIR
diff --git a/pkgs/development/libraries/protobuf/generic-v3.nix b/pkgs/development/libraries/protobuf/generic-v3.nix
index 9dc7f70c2fe2..cfcaa5551526 100644
--- a/pkgs/development/libraries/protobuf/generic-v3.nix
+++ b/pkgs/development/libraries/protobuf/generic-v3.nix
@@ -25,7 +25,7 @@ mkProtobufDerivation = buildProtobuf: stdenv: stdenv.mkDerivation {
     chmod -R a+w gmock
     chmod -R a+w googletest
     ln -s ../googletest gmock/gtest
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/google/protobuf/testing/googletest.cc \
       --replace 'tmpnam(b)' '"'$TMPDIR'/foo"'
   '';
diff --git a/pkgs/development/libraries/protobuf/generic.nix b/pkgs/development/libraries/protobuf/generic.nix
index 71f8e90b774a..0b52ea7de22e 100644
--- a/pkgs/development/libraries/protobuf/generic.nix
+++ b/pkgs/development/libraries/protobuf/generic.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation (finalAttrs: {
     inherit hash;
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/google/protobuf/testing/googletest.cc \
       --replace 'tmpnam(b)' '"'$TMPDIR'/foo"'
   '';
@@ -85,7 +85,7 @@ stdenv.mkDerivation (finalAttrs: {
   # https://hydra.nixos.org/build/235677717/nixlog/4/tail
   # Also AnyTest.TestPackFromSerializationExceedsSizeLimit fails on 32-bit platforms
   # https://github.com/protocolbuffers/protobuf/issues/8460
-  doCheck = !(stdenv.isDarwin && lib.versionAtLeast version "23") && !stdenv.hostPlatform.is32bit;
+  doCheck = !(stdenv.hostPlatform.isDarwin && lib.versionAtLeast version "23") && !stdenv.hostPlatform.is32bit;
 
   passthru = {
     tests = {
diff --git a/pkgs/development/libraries/pslib/default.nix b/pkgs/development/libraries/pslib/default.nix
index 02a8fcde91ef..13a2b17a3e01 100644
--- a/pkgs/development/libraries/pslib/default.nix
+++ b/pkgs/development/libraries/pslib/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ zlib libpng libjpeg giflib libtiff ];
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     NIX_CFLAGS_COMPILE = "-Wno-error=implicit-function-declaration";
   };
 
diff --git a/pkgs/development/libraries/pth/default.nix b/pkgs/development/libraries/pth/default.nix
index bbbc5017c410..3d4c056b71dd 100644
--- a/pkgs/development/libraries/pth/default.nix
+++ b/pkgs/development/libraries/pth/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "0ckjqw5kz5m30srqi87idj7xhpw6bpki43mj07bazjm2qmh3cdbj";
   };
 
-  preConfigure = lib.optionalString stdenv.isAarch32 ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isAarch32 ''
     configureFlagsArray=("CFLAGS=-DJB_SP=8 -DJB_PC=9")
   '' + lib.optionalString (stdenv.hostPlatform.libc == "glibc") ''
     configureFlagsArray+=("ac_cv_check_sjlj=ssjlj")
diff --git a/pkgs/development/libraries/python-qt/default.nix b/pkgs/development/libraries/python-qt/default.nix
index f79487a3c4b9..4f417c5e15e3 100644
--- a/pkgs/development/libraries/python-qt/default.nix
+++ b/pkgs/development/libraries/python-qt/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation (finalAttrs: {
     cp -r ./extensions $out/include/PythonQt
   '';
 
-  preFixup = lib.optionalString stdenv.isDarwin ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id \
       $out/lib/libPythonQt-Qt5-Python3.${python3.sourceVersion.minor}.dylib \
       $out/lib/libPythonQt-Qt5-Python3.${python3.sourceVersion.minor}.dylib
diff --git a/pkgs/development/libraries/qhull/default.nix b/pkgs/development/libraries/qhull/default.nix
index a7f1bc271155..998575bb166c 100644
--- a/pkgs/development/libraries/qhull/default.nix
+++ b/pkgs/development/libraries/qhull/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake ]
-    ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+    ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   meta = with lib; {
     homepage = "http://www.qhull.org/";
diff --git a/pkgs/development/libraries/qmltermwidget/default.nix b/pkgs/development/libraries/qmltermwidget/default.nix
index 0984912463e1..6ba9418a6e20 100644
--- a/pkgs/development/libraries/qmltermwidget/default.nix
+++ b/pkgs/development/libraries/qmltermwidget/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation {
   buildInputs = [
     qtbase
     qtmultimedia
-  ] ++ lib.optional stdenv.isDarwin utmp;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin utmp;
 
   patches = [
     # Changes required to make it compatible with lomiri-terminal-app
diff --git a/pkgs/development/libraries/qrencode/default.nix b/pkgs/development/libraries/qrencode/default.nix
index 237751c6f8f2..8a52fce9c74a 100644
--- a/pkgs/development/libraries/qrencode/default.nix
+++ b/pkgs/development/libraries/qrencode/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation (finalAttrs: rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ libiconv libpng ]
-    ++ lib.optionals stdenv.isDarwin [ libobjc ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libobjc ];
 
   nativeCheckInputs = [ SDL2 ];
 
diff --git a/pkgs/development/libraries/qrupdate/default.nix b/pkgs/development/libraries/qrupdate/default.nix
index 282b926b2e77..a3ccff5c1093 100644
--- a/pkgs/development/libraries/qrupdate/default.nix
+++ b/pkgs/development/libraries/qrupdate/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   # https://github.com/mpimd-csc/qrupdate-ng/issues/4
-  patches = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  patches = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     ./disable-zch1dn-test.patch
   ];
 
diff --git a/pkgs/development/libraries/qscintilla/default.nix b/pkgs/development/libraries/qscintilla/default.nix
index 69adf65643d0..0d8df9b316b8 100644
--- a/pkgs/development/libraries/qscintilla/default.nix
+++ b/pkgs/development/libraries/qscintilla/default.nix
@@ -10,7 +10,7 @@
 }:
 
 let
-  stdenv' = if stdenv.isDarwin then
+  stdenv' = if stdenv.hostPlatform.isDarwin then
     darwin.apple_sdk_11_0.stdenv
   else
     stdenv
@@ -28,10 +28,10 @@ in stdenv'.mkDerivation rec {
 
   buildInputs = [ qtbase ];
 
-  propagatedBuildInputs = lib.optionals stdenv.isDarwin [ qtmacextras ];
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ qtmacextras ];
 
   nativeBuildInputs = [ unzip qmake ]
-    ++ lib.optionals stdenv.isDarwin [ fixDarwinDylibNames ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ fixDarwinDylibNames ];
 
   # Make sure that libqscintilla2.so is available in $out/lib since it is expected
   # by some packages such as sqlitebrowser
@@ -71,6 +71,6 @@ in stdenv'.mkDerivation rec {
     maintainers = with maintainers; [ peterhoeg ];
     platforms = platforms.unix;
     # ld: library not found for -lcups
-    broken = stdenv.isDarwin && lib.versionAtLeast qtbase.version "6";
+    broken = stdenv.hostPlatform.isDarwin && lib.versionAtLeast qtbase.version "6";
   };
 }
diff --git a/pkgs/development/libraries/qt-5/5.15/default.nix b/pkgs/development/libraries/qt-5/5.15/default.nix
index af2f431dfb40..2f57b1c62de4 100644
--- a/pkgs/development/libraries/qt-5/5.15/default.nix
+++ b/pkgs/development/libraries/qt-5/5.15/default.nix
@@ -28,7 +28,7 @@ let
   qtCompatVersion = srcs.qtbase.version;
 
   patches = {
-    qtbase = lib.optionals stdenv.isDarwin [
+    qtbase = lib.optionals stdenv.hostPlatform.isDarwin [
       ./qtbase.patch.d/0001-qtbase-mkspecs-mac.patch
 
       # Patch framework detection to support X.framework/X.tbd,
@@ -63,7 +63,7 @@ let
         hash = "sha256-UEvIXzn387f9BAeBdhheStD/4M7en+rmqX8C6gstl6k=";
       })
     ];
-    qtmultimedia = lib.optionals stdenv.isDarwin [
+    qtmultimedia = lib.optionals stdenv.hostPlatform.isDarwin [
       # build patch for qtmultimedia with xcode 15
       (fetchpatch {
         url = "https://raw.githubusercontent.com/Homebrew/formula-patches/3f509180/qt5/qt5-qtmultimedia-xcode15.patch";
@@ -184,7 +184,7 @@ let
       # See: https://bugreports.qt.io/browse/QTBUG-124375
       # Backport of: https://code.qt.io/cgit/qt/qtwebengine-chromium.git/commit/?id=a766045f65f934df3b5f1aa63bc86fbb3e003a09
       ./qtwebengine-ninja-1.12.patch
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       ./qtwebengine-darwin-no-platform-check.patch
       ./qtwebengine-mac-dont-set-dsymutil-path.patch
       ./qtwebengine-darwin-checks.patch
@@ -218,7 +218,7 @@ let
       ./qtwebkit.patch
       ./qtwebkit-icu68.patch
       ./qtwebkit-cstdint.patch
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       ./qtwebkit-darwin-no-readline.patch
       ./qtwebkit-darwin-no-qos-classes.patch
     ];
@@ -248,7 +248,7 @@ let
         inherit (srcs.qtbase) src version;
         patches = patches.qtbase;
         inherit bison cups harfbuzz libGL;
-        withGtk3 = !stdenv.isDarwin; inherit dconf gtk3;
+        withGtk3 = !stdenv.hostPlatform.isDarwin; inherit dconf gtk3;
         inherit developerBuild decryptSslTraffic;
         inherit (darwin.apple_sdk_11_0.frameworks) AGL AppKit ApplicationServices AVFoundation Carbon Cocoa CoreAudio CoreBluetooth
           CoreLocation CoreServices DiskArbitration Foundation OpenGL MetalKit IOKit;
@@ -311,7 +311,7 @@ let
         # clang is pinned to clang 15. That also makes fixing the second set of errors unnecessary.
         stdenv =
           let stdenv' = if stdenv.cc.isClang then overrideLibcxx llvmPackages_15.stdenv else stdenv;
-          in if stdenv'.isDarwin then overrideSDK stdenv' "11.0" else stdenv';
+          in if stdenv'.hostPlatform.isDarwin then overrideSDK stdenv' "11.0" else stdenv';
         inherit (srcs.qtwebengine) version;
         python = python3;
         inherit (darwin) xnu;
@@ -343,8 +343,8 @@ let
         qtscript qtsensors qtserialport qtsvg qttools qttranslations
         qtvirtualkeyboard qtwebchannel qtwebengine qtwebsockets
         qtwebview qtx11extras qtxmlpatterns qtlottie qtdatavis3d
-      ] ++ lib.optional (!stdenv.isDarwin) qtwayland
-        ++ lib.optional (stdenv.isDarwin) qtmacextras);
+      ] ++ lib.optional (!stdenv.hostPlatform.isDarwin) qtwayland
+        ++ lib.optional (stdenv.hostPlatform.isDarwin) qtmacextras);
 
       qmake = callPackage ({ qtbase }: makeSetupHook {
         name = "qmake-hook";
@@ -360,7 +360,7 @@ let
       wrapQtAppsHook = callPackage ({ makeBinaryWrapper, qtbase, qtwayland }: makeSetupHook {
         name = "wrap-qt5-apps-hook";
         propagatedBuildInputs = [ qtbase.dev makeBinaryWrapper ]
-          ++ lib.optional stdenv.isLinux qtwayland.dev;
+          ++ lib.optional stdenv.hostPlatform.isLinux qtwayland.dev;
       } ../hooks/wrap-qt-apps-hook.sh) { };
     };
 
diff --git a/pkgs/development/libraries/qt-5/modules/qt3d.nix b/pkgs/development/libraries/qt-5/modules/qt3d.nix
index f394ff6627e0..c54f4b7d7b48 100644
--- a/pkgs/development/libraries/qt-5/modules/qt3d.nix
+++ b/pkgs/development/libraries/qt-5/modules/qt3d.nix
@@ -5,5 +5,5 @@ qtModule {
   propagatedBuildInputs = [ qtbase qtdeclarative ];
   outputs = [ "out" "dev" "bin" ];
   # error: use of undeclared identifier 'stat64'
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dstat64=stat";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) "-Dstat64=stat";
 }
diff --git a/pkgs/development/libraries/qt-5/modules/qtbase.nix b/pkgs/development/libraries/qt-5/modules/qtbase.nix
index 7f3079d5add5..7aef466b7937 100644
--- a/pkgs/development/libraries/qt-5/modules/qtbase.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtbase.nix
@@ -18,7 +18,7 @@
 , withQttranslation ? true, qttranslations ? null
 
   # options
-, libGLSupported ? !stdenv.isDarwin
+, libGLSupported ? !stdenv.hostPlatform.isDarwin
 , libGL
   # qmake detection for libmysqlclient does not seem to work when cross compiling
 , mysqlSupport ? stdenv.hostPlatform == stdenv.buildPlatform
@@ -55,7 +55,7 @@ stdenv.mkDerivation (finalAttrs: ({
     libjpeg libpng
     pcre2
   ] ++ (
-    if stdenv.isDarwin then [
+    if stdenv.hostPlatform.isDarwin then [
       # TODO: move to buildInputs, this should not be propagated.
       AGL AppKit ApplicationServices AVFoundation Carbon Cocoa CoreAudio CoreBluetooth
       CoreLocation CoreServices DiskArbitration Foundation OpenGL
@@ -75,7 +75,7 @@ stdenv.mkDerivation (finalAttrs: ({
   );
 
   buildInputs = [ python3 at-spi2-core ]
-    ++ lib.optionals (!stdenv.isDarwin)
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin)
     (
       [ libinput ]
       ++ lib.optional withGtk3 gtk3
@@ -86,7 +86,7 @@ stdenv.mkDerivation (finalAttrs: ({
     ++ lib.optional (postgresql != null) postgresql;
 
   nativeBuildInputs = [ bison flex gperf lndir perl pkg-config which ]
-    ++ lib.optionals stdenv.isDarwin [ xcbuild ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcbuild ];
 
   } // lib.optionalAttrs (stdenv.buildPlatform != stdenv.hostPlatform) {
     # `qtbase` expects to find `cc` (with no prefix) in the
@@ -99,7 +99,7 @@ stdenv.mkDerivation (finalAttrs: ({
 
   # libQt5Core links calls CoreFoundation APIs that call into the system ICU. Binaries linked
   # against it will crash during build unless they can access `/usr/share/icu/icudtXXl.dat`.
-  propagatedSandboxProfile = lib.optionalString stdenv.isDarwin ''
+  propagatedSandboxProfile = lib.optionalString stdenv.hostPlatform.isDarwin ''
     (allow file-read* (subpath "/usr/share/icu"))
   '';
 
@@ -140,7 +140,7 @@ stdenv.mkDerivation (finalAttrs: ({
 
     patchShebangs ./bin
   '' + (
-    if stdenv.isDarwin then ''
+    if stdenv.hostPlatform.isDarwin then ''
         sed -i \
             -e 's|/usr/bin/xcode-select|xcode-select|' \
             -e 's|/usr/bin/xcrun|xcrun|' \
@@ -217,7 +217,7 @@ stdenv.mkDerivation (finalAttrs: ({
       ''-DLIBRESOLV_SO="${stdenv.cc.libc.out}/lib/libresolv"''
       ''-DNIXPKGS_LIBXCURSOR="${libXcursor.out}/lib/libXcursor"''
     ] ++ lib.optional libGLSupported ''-DNIXPKGS_MESA_GL="${libGL.out}/lib/libGL"''
-    ++ lib.optional stdenv.isLinux "-DUSE_X11"
+    ++ lib.optional stdenv.hostPlatform.isLinux "-DUSE_X11"
     ++ lib.optionals (stdenv.hostPlatform.system == "x86_64-darwin") [
       # ignore "is only available on macOS 10.12.2 or newer" in obj-c code
       "-Wno-error=unguarded-availability"
@@ -318,7 +318,7 @@ stdenv.mkDerivation (finalAttrs: ({
     ''-${lib.optionalString (!buildTests) "no"}make tests''
   ]
     ++ (
-      if stdenv.isDarwin then [
+      if stdenv.hostPlatform.isDarwin then [
       "-no-fontconfig"
       "-qt-freetype"
       "-qt-libpng"
diff --git a/pkgs/development/libraries/qt-5/modules/qtconnectivity.nix b/pkgs/development/libraries/qt-5/modules/qtconnectivity.nix
index 81efb4bee04b..d61619613eba 100644
--- a/pkgs/development/libraries/qt-5/modules/qtconnectivity.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtconnectivity.nix
@@ -2,11 +2,11 @@
 
 qtModule {
   pname = "qtconnectivity";
-  buildInputs = lib.optional stdenv.isLinux bluez;
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux bluez;
   propagatedBuildInputs = [
     qtbase
     qtdeclarative
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     IOBluetooth
   ];
   outputs = [ "out" "dev" "bin" ];
diff --git a/pkgs/development/libraries/qt-5/modules/qtdatavis3d.nix b/pkgs/development/libraries/qt-5/modules/qtdatavis3d.nix
index d79320ea139f..e89a735d77b8 100644
--- a/pkgs/development/libraries/qt-5/modules/qtdatavis3d.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtdatavis3d.nix
@@ -5,5 +5,5 @@ qtModule {
   propagatedBuildInputs = [ qtbase qtdeclarative ];
   outputs = [ "out" "dev" "bin" ];
   # error: use of undeclared identifier 'stat64'
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dstat64=stat";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) "-Dstat64=stat";
 }
diff --git a/pkgs/development/libraries/qt-5/modules/qtgamepad.nix b/pkgs/development/libraries/qt-5/modules/qtgamepad.nix
index 398572673171..8d0a0e2177fa 100644
--- a/pkgs/development/libraries/qt-5/modules/qtgamepad.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtgamepad.nix
@@ -3,7 +3,7 @@
 qtModule {
   pname = "qtgamepad";
   propagatedBuildInputs = [ qtbase qtdeclarative ]
-    ++ lib.optional stdenv.isDarwin GameController;
+    ++ lib.optional stdenv.hostPlatform.isDarwin GameController;
   buildInputs = [ ];
   nativeBuildInputs = [ pkg-config ];
   outputs = [ "out" "dev" "bin" ];
diff --git a/pkgs/development/libraries/qt-5/modules/qtlocation.nix b/pkgs/development/libraries/qt-5/modules/qtlocation.nix
index 338911a5afd5..35627af0c685 100644
--- a/pkgs/development/libraries/qt-5/modules/qtlocation.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtlocation.nix
@@ -4,7 +4,7 @@ qtModule {
   pname = "qtlocation";
   propagatedBuildInputs = [ qtbase qtmultimedia ];
   outputs = [ "bin" "out" "dev" ];
-  qmakeFlags = lib.optionals stdenv.isDarwin [
+  qmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [
      # boost uses std::auto_ptr which has been disabled in clang with libcxx
      # This flag re-enables this feature
      # https://libcxx.llvm.org/docs/UsingLibcxx.html#c-17-specific-configuration-macros
diff --git a/pkgs/development/libraries/qt-5/modules/qtmultimedia.nix b/pkgs/development/libraries/qt-5/modules/qtmultimedia.nix
index d5dc16c52823..0346ca23c5e2 100644
--- a/pkgs/development/libraries/qt-5/modules/qtmultimedia.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtmultimedia.nix
@@ -17,8 +17,8 @@ qtModule {
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ gstreamer gst-plugins-base ]
     # https://github.com/NixOS/nixpkgs/pull/169336 regarding libpulseaudio
-    ++ lib.optionals stdenv.isLinux [ libpulseaudio alsa-lib wayland ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libpulseaudio alsa-lib wayland ];
   outputs = [ "bin" "dev" "out" ];
   qmakeFlags = [ "GST_VERSION=1.0" ];
-  NIX_LDFLAGS = lib.optionalString (stdenv.isDarwin) "-lobjc";
+  NIX_LDFLAGS = lib.optionalString (stdenv.hostPlatform.isDarwin) "-lobjc";
 }
diff --git a/pkgs/development/libraries/qt-5/modules/qtserialport.nix b/pkgs/development/libraries/qt-5/modules/qtserialport.nix
index 7907f91b986b..3d5c00a3575e 100644
--- a/pkgs/development/libraries/qt-5/modules/qtserialport.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtserialport.nix
@@ -3,5 +3,5 @@
 qtModule {
   pname = "qtserialport";
   propagatedBuildInputs = [ qtbase ];
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isLinux "-DNIXPKGS_LIBUDEV=\"${lib.getLib systemd}/lib/libudev\"";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isLinux "-DNIXPKGS_LIBUDEV=\"${lib.getLib systemd}/lib/libudev\"";
 }
diff --git a/pkgs/development/libraries/qt-5/modules/qtspeech.nix b/pkgs/development/libraries/qt-5/modules/qtspeech.nix
index 17bc16dab4fc..d60a12f3854d 100644
--- a/pkgs/development/libraries/qt-5/modules/qtspeech.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtspeech.nix
@@ -3,7 +3,7 @@
 qtModule {
   pname = "qtspeech";
   propagatedBuildInputs = [ ];
-  buildInputs = lib.optionals stdenv.isLinux [ speechd-minimal ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ speechd-minimal ];
   nativeBuildInputs = [ pkg-config ];
   outputs = [ "out" "dev" ];
 }
diff --git a/pkgs/development/libraries/qt-5/modules/qttools.nix b/pkgs/development/libraries/qt-5/modules/qttools.nix
index 37e4348ed2c2..b728620362f9 100644
--- a/pkgs/development/libraries/qt-5/modules/qttools.nix
+++ b/pkgs/development/libraries/qt-5/modules/qttools.nix
@@ -32,11 +32,11 @@ qtModule {
     "bin/qthelpconverter"
     "bin/lprodump"
     "bin/qdistancefieldgenerator"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "bin/macdeployqt"
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && qtdeclarative != null) ''-DNIXPKGS_QMLIMPORTSCANNER="${qtdeclarative.dev}/bin/qmlimportscanner"'';
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isDarwin && qtdeclarative != null) ''-DNIXPKGS_QMLIMPORTSCANNER="${qtdeclarative.dev}/bin/qmlimportscanner"'';
 
   setupHook = ../hooks/qttools-setup-hook.sh;
 }
diff --git a/pkgs/development/libraries/qt-5/modules/qtwebengine.nix b/pkgs/development/libraries/qt-5/modules/qtwebengine.nix
index 1a63c9508c05..75149cfb5a8b 100644
--- a/pkgs/development/libraries/qt-5/modules/qtwebengine.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtwebengine.nix
@@ -29,7 +29,7 @@
 , lib, stdenv
 , version ? null
 , qtCompatVersion
-, pipewireSupport ? stdenv.isLinux
+, pipewireSupport ? stdenv.hostPlatform.isLinux
 , pipewire
 , postPatch ? ""
 , nspr
@@ -65,7 +65,7 @@ qtModule ({
     pkgsBuildBuild.pkg-config
     (lib.getDev pkgsBuildTarget.targetPackages.qt5.qtquickcontrols)
     pkg-config-wrapped-without-prefix
-  ] ++ lib.optional stdenv.isDarwin xcbuild;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin xcbuild;
   doCheck = true;
   outputs = [ "bin" "dev" "out" ];
 
@@ -135,7 +135,7 @@ qtModule ({
   # Prevent Chromium build script from making the path to `clang` relative to
   # the build directory.  `clang_base_path` is the value of `QMAKE_CLANG_DIR`
   # from `src/core/config/mac_osx.pri`.
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace ./src/3rdparty/chromium/build/toolchain/mac/BUILD.gn \
       --replace 'prefix = rebase_path("$clang_base_path/bin/", root_build_dir)' 'prefix = "$clang_base_path/bin/"'
   ''
@@ -148,13 +148,13 @@ qtModule ({
       src/core/web_engine_library_info.cpp
   ''
   # Patch library paths in Chromium sources
-  + lib.optionalString (!stdenv.isDarwin) ''
+  + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     sed -i -e '/lib_loader.*Load/s!"\(libudev\.so\)!"${lib.getLib systemd}/lib/\1!' \
       src/3rdparty/chromium/device/udev_linux/udev?_loader.cc
 
     sed -i -e '/libpci_loader.*Load/s!"\(libpci\.so\)!"${pciutils}/lib/\1!' \
       src/3rdparty/chromium/gpu/config/gpu_info_collector_linux.cc
-  '' + lib.optionalString stdenv.isDarwin (''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin (''
     substituteInPlace src/buildtools/config/mac_osx.pri \
       --replace 'QMAKE_CLANG_DIR = "/usr"' 'QMAKE_CLANG_DIR = "${stdenv.cc}"'
 
@@ -233,7 +233,7 @@ qtModule ({
 
     libevent
     ffmpeg_7
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     dbus zlib minizip snappy nss protobuf jsoncpp
 
     # Audio formats
@@ -257,7 +257,7 @@ qtModule ({
 
   # FIXME These dependencies shouldn't be needed but can't find a way
   # around it. Chromium pulls this in while bootstrapping GN.
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libobjc
     cctools
 
@@ -287,7 +287,7 @@ qtModule ({
     libunwind
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     cups
     libpm
     sandbox
@@ -313,7 +313,7 @@ qtModule ({
 
   postInstall = lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
     mkdir -p $out/libexec
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     cat > $out/libexec/qt.conf <<EOF
     [Paths]
     Prefix = ..
diff --git a/pkgs/development/libraries/qt-5/modules/qtwebkit.nix b/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
index bd05954ddb35..3382bca0f982 100644
--- a/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
@@ -23,13 +23,13 @@ in
 qtModule {
   pname = "qtwebkit";
   propagatedBuildInputs = [ qtbase qtdeclarative qtlocation qtsensors qtwebchannel ]
-    ++ lib.optional stdenv.isDarwin qtmultimedia;
+    ++ lib.optional stdenv.hostPlatform.isDarwin qtmultimedia;
   buildInputs = [ fontconfig libwebp libxml2 libxslt sqlite glib gst_all_1.gstreamer gst_all_1.gst-plugins-base hyphen ]
-    ++ lib.optionals stdenv.isDarwin [ ICU OpenGL ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ ICU OpenGL ];
   nativeBuildInputs = [ bison flex gdb gperf perl pkg-config python3 ruby cmake ];
 
   cmakeFlags = [ "-DPORT=Qt" ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "-DQt5Multimedia_DIR=${lib.getDev qtmultimedia}/lib/cmake/Qt5Multimedia"
       "-DQt5MultimediaWidgets_DIR=${lib.getDev qtmultimedia}/lib/cmake/Qt5MultimediaWidgets"
       "-DMACOS_FORCE_SYSTEM_XML_LIBRARIES=OFF"
@@ -42,13 +42,13 @@ qtModule {
   # with gcc8, -Wclass-memaccess became part of -Wall and this too exceeds the logging limit
   ++ lib.optional stdenv.cc.isGNU "-Wno-class-memaccess"
   # with clang this warning blows the log over Hydra's limit
-  ++ lib.optional stdenv.isDarwin "-Wno-inconsistent-missing-override"
-  ++ lib.optional (!stdenv.isDarwin) ''-DNIXPKGS_LIBUDEV="${lib.getLib systemd}/lib/libudev"'');
+  ++ lib.optional stdenv.hostPlatform.isDarwin "-Wno-inconsistent-missing-override"
+  ++ lib.optional (!stdenv.hostPlatform.isDarwin) ''-DNIXPKGS_LIBUDEV="${lib.getLib systemd}/lib/libudev"'');
 
   doCheck = false; # fails 13 out of 13 tests (ctest)
 
   # remove forbidden references to $TMPDIR
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --shrink-rpath --allowed-rpath-prefixes "$NIX_STORE" "$out"/libexec/*
   '';
 
diff --git a/pkgs/development/libraries/qt-5/modules/qtwebview.nix b/pkgs/development/libraries/qt-5/modules/qtwebview.nix
index fd8755390973..9b1a290ece01 100644
--- a/pkgs/development/libraries/qt-5/modules/qtwebview.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtwebview.nix
@@ -3,10 +3,10 @@
 qtModule {
   pname = "qtwebview";
   propagatedBuildInputs = [ qtdeclarative qtwebengine ];
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
     WebKit
   ];
   outputs = [ "out" "dev" "bin" ];
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-framework CoreFoundation -framework WebKit";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-framework CoreFoundation -framework WebKit";
 }
diff --git a/pkgs/development/libraries/qt-6/default.nix b/pkgs/development/libraries/qt-6/default.nix
index 83f9268624cc..8625dadf5233 100644
--- a/pkgs/development/libraries/qt-6/default.nix
+++ b/pkgs/development/libraries/qt-6/default.nix
@@ -28,7 +28,7 @@ let
         inherit (self) qtModule;
         inherit srcs python3;
         stdenv =
-          if stdenv.isDarwin
+          if stdenv.hostPlatform.isDarwin
           then overrideSDK stdenv { darwinMinVersion = "11.0"; darwinSdkVersion = "11.0"; }
           else stdenv;
       });
@@ -106,7 +106,7 @@ let
             qtwebengine
             qtwebsockets
             qtwebview
-          ] ++ lib.optionals (!stdenv.isDarwin) [ qtwayland libglvnd ]))
+          ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ qtwayland libglvnd ]))
         { };
 
       qt3d = callPackage ./modules/qt3d.nix { };
@@ -163,7 +163,7 @@ let
         qtModule = callPackage
           ({ qtModule }: qtModule.override {
             stdenv =
-              if stdenv.isDarwin
+              if stdenv.hostPlatform.isDarwin
               then overrideSDK stdenv { darwinMinVersion = "11.0"; darwinSdkVersion = "11.0"; }
               else stdenv;
           })
diff --git a/pkgs/development/libraries/qt-6/modules/qtbase.nix b/pkgs/development/libraries/qt-6/modules/qtbase.nix
index e738aba60560..68ef06921ac9 100644
--- a/pkgs/development/libraries/qt-6/modules/qtbase.nix
+++ b/pkgs/development/libraries/qt-6/modules/qtbase.nix
@@ -250,7 +250,7 @@ stdenv.mkDerivation rec {
     moveToOutput      "mkspecs/modules" "$dev"
     fixQtModulePaths  "$dev/mkspecs/modules"
     fixQtBuiltinPaths "$out" '*.pr?'
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
 
     # FIXME: not sure why this isn't added automatically?
     patchelf --add-rpath "${libmysqlclient}/lib/mariadb" $out/${qtPluginPrefix}/sqldrivers/libqsqlmysql.so
diff --git a/pkgs/development/libraries/qt-6/modules/qtwebengine.nix b/pkgs/development/libraries/qt-6/modules/qtwebengine.nix
index 8da3b7b62842..08c061e10d7a 100644
--- a/pkgs/development/libraries/qt-6/modules/qtwebengine.nix
+++ b/pkgs/development/libraries/qt-6/modules/qtwebengine.nix
@@ -326,6 +326,6 @@ qtModule {
     # 1 hour on 32x3.6GHz -> maybe 12 hours on 4x2.4GHz
     timeout = 24 * 3600;
     # Not compatible with macOS 11 without massive patching
-    broken = stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "12";
+    broken = stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "12";
   };
 }
diff --git a/pkgs/development/libraries/qtkeychain/default.nix b/pkgs/development/libraries/qtkeychain/default.nix
index 9007129cecf5..b6744692bbe8 100644
--- a/pkgs/development/libraries/qtkeychain/default.nix
+++ b/pkgs/development/libraries/qtkeychain/default.nix
@@ -29,12 +29,12 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ cmake ]
-    ++ lib.optionals (!stdenv.isDarwin) [ pkg-config ] # for finding libsecret
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ pkg-config ] # for finding libsecret
   ;
 
-  buildInputs = lib.optionals (!stdenv.isDarwin) [ libsecret ]
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ libsecret ]
     ++ [ qtbase qttools ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
     Security
   ];
diff --git a/pkgs/development/libraries/qtpbfimageplugin/default.nix b/pkgs/development/libraries/qtpbfimageplugin/default.nix
index 94dc1646513c..5005ab8243d4 100644
--- a/pkgs/development/libraries/qtpbfimageplugin/default.nix
+++ b/pkgs/development/libraries/qtpbfimageplugin/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
     # Fix plugin dir
     substituteInPlace pbfplugin.pro \
       --replace "\$\$[QT_INSTALL_PLUGINS]" "$out/$qtPluginPrefix"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Fix darwin build
     substituteInPlace pbfplugin.pro \
       --replace '$$PROTOBUF/include' '${protobuf}/include' \
diff --git a/pkgs/development/libraries/quarto/default.nix b/pkgs/development/libraries/quarto/default.nix
index 11350128b4aa..a3a633af6c94 100644
--- a/pkgs/development/libraries/quarto/default.nix
+++ b/pkgs/development/libraries/quarto/default.nix
@@ -63,7 +63,7 @@ stdenv.mkDerivation (final: {
 
   passthru.tests = {
     quarto-check = runCommand "quarto-check" {
-      nativeBuildInputs = lib.optionals stdenv.isDarwin [ sysctl ];
+      nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ sysctl ];
     } ''
       export HOME="$(mktemp -d)"
       ${quarto}/bin/quarto check
diff --git a/pkgs/development/libraries/quazip/default.nix b/pkgs/development/libraries/quazip/default.nix
index c3f1f7a7834a..b2fcad6cab87 100644
--- a/pkgs/development/libraries/quazip/default.nix
+++ b/pkgs/development/libraries/quazip/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ zlib qtbase ];
   propagatedBuildInputs = [ qt5compat ];
   nativeBuildInputs = [ cmake ]
-    ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+    ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   dontWrapQtApps = true;
 
diff --git a/pkgs/development/libraries/quickfix/default.nix b/pkgs/development/libraries/quickfix/default.nix
index 0c327d0d5e59..bd4612c8eec1 100644
--- a/pkgs/development/libraries/quickfix/default.nix
+++ b/pkgs/development/libraries/quickfix/default.nix
@@ -55,6 +55,6 @@ stdenv.mkDerivation rec {
     homepage = "http://www.quickfixengine.org";
     license = licenses.free; # similar to BSD 4-clause
     maintainers = with maintainers; [ bhipple ];
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/libraries/quictls/default.nix b/pkgs/development/libraries/quictls/default.nix
index 49dfc94993e4..1e3cb69d1f82 100644
--- a/pkgs/development/libraries/quictls/default.nix
+++ b/pkgs/development/libraries/quictls/default.nix
@@ -119,7 +119,7 @@ stdenv.mkDerivation (finalAttrs: {
   ++ lib.optional enableSSL3 "enable-ssl3"
   # We select KTLS here instead of the configure-time detection (which we patch out).
   # KTLS should work on FreeBSD 13+ as well, so we could enable it if someone tests it.
-  ++ lib.optional (stdenv.isLinux && lib.versionAtLeast finalAttrs.version "3.0.0") "enable-ktls"
+  ++ lib.optional (stdenv.hostPlatform.isLinux && lib.versionAtLeast finalAttrs.version "3.0.0") "enable-ktls"
   ++ lib.optional stdenv.hostPlatform.isAarch64 "no-afalgeng"
   # OpenSSL needs a specific `no-shared` configure flag.
   # See https://wiki.openssl.org/index.php/Compilation_and_Installation#Configure_Options
diff --git a/pkgs/development/libraries/qwt/default.nix b/pkgs/development/libraries/qwt/default.nix
index dec84c1c4955..814e8f0252c1 100644
--- a/pkgs/development/libraries/qwt/default.nix
+++ b/pkgs/development/libraries/qwt/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   propagatedBuildInputs = [ qtbase qtsvg qttools ];
-  nativeBuildInputs = [ qmake ] ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+  nativeBuildInputs = [ qmake ] ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
   postPatch = ''
     sed -e "s|QWT_INSTALL_PREFIX.*=.*|QWT_INSTALL_PREFIX = $out|g" -i qwtconfig.pri
diff --git a/pkgs/development/libraries/range-v3/default.nix b/pkgs/development/libraries/range-v3/default.nix
index 3ef599887eb4..a7e5fe6eb263 100644
--- a/pkgs/development/libraries/range-v3/default.nix
+++ b/pkgs/development/libraries/range-v3/default.nix
@@ -16,9 +16,9 @@ stdenv.mkDerivation rec {
   # Building the tests currently fails on AArch64 due to internal compiler
   # errors (with GCC 9.2):
   cmakeFlags = [ "-DRANGES_ENABLE_WERROR=OFF" ]
-    ++ lib.optional stdenv.isAarch64 "-DRANGE_V3_TESTS=OFF";
+    ++ lib.optional stdenv.hostPlatform.isAarch64 "-DRANGE_V3_TESTS=OFF";
 
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
   checkTarget = "test";
 
   meta = with lib; {
diff --git a/pkgs/development/libraries/rapidjson/default.nix b/pkgs/development/libraries/rapidjson/default.nix
index 9aa239458502..8e72b7748d65 100644
--- a/pkgs/development/libraries/rapidjson/default.nix
+++ b/pkgs/development/libraries/rapidjson/default.nix
@@ -63,7 +63,7 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.cmakeFeature "CMAKE_CXX_FLAGS_RELEASE" "-Wno-error")
   ];
 
-  doCheck = !(stdenv.hostPlatform.isStatic || stdenv.isDarwin);
+  doCheck = !(stdenv.hostPlatform.isStatic || stdenv.hostPlatform.isDarwin);
 
   nativeCheckInputs = [
     valgrind
diff --git a/pkgs/development/libraries/raylib/default.nix b/pkgs/development/libraries/raylib/default.nix
index 2cdde4f2b726..5c1b7d1dab0a 100644
--- a/pkgs/development/libraries/raylib/default.nix
+++ b/pkgs/development/libraries/raylib/default.nix
@@ -37,16 +37,16 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [
     cmake
-  ] ++ lib.optional stdenv.isLinux autoPatchelfHook;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux autoPatchelfHook;
 
   buildInputs = [ glfw ]
-    ++ lib.optionals stdenv.isLinux [ mesa libXi libXcursor libXrandr libXinerama ]
-    ++ lib.optionals stdenv.isDarwin [ Carbon Cocoa ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ mesa libXi libXcursor libXrandr libXinerama ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon Cocoa ]
     ++ lib.optional alsaSupport alsa-lib
     ++ lib.optional pulseSupport libpulseaudio;
 
-  propagatedBuildInputs = lib.optionals stdenv.isLinux [ libGLU libX11 ]
-    ++ lib.optionals stdenv.isDarwin [ OpenGL ];
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libGLU libX11 ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ OpenGL ];
 
   # https://github.com/raysan5/raylib/wiki/CMake-Build-Options
   cmakeFlags = [
@@ -70,7 +70,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   # fix libasound.so/libpulse.so not being found
-  appendRunpaths = lib.optionals stdenv.isLinux [
+  appendRunpaths = lib.optionals stdenv.hostPlatform.isLinux [
     (lib.makeLibraryPath (lib.optional alsaSupport alsa-lib ++ lib.optional pulseSupport libpulseaudio))
   ];
 
diff --git a/pkgs/development/libraries/retro-gtk/default.nix b/pkgs/development/libraries/retro-gtk/default.nix
index 69eb4b0cd12d..074985308244 100644
--- a/pkgs/development/libraries/retro-gtk/default.nix
+++ b/pkgs/development/libraries/retro-gtk/default.nix
@@ -72,6 +72,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Plus;
     maintainers = [ maintainers.DamienCassou ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/retro-gtk.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/retro-gtk.x86_64-darwin
   };
 }
diff --git a/pkgs/development/libraries/rlottie/default.nix b/pkgs/development/libraries/rlottie/default.nix
index 541c805bba5b..2243e482a569 100644
--- a/pkgs/development/libraries/rlottie/default.nix
+++ b/pkgs/development/libraries/rlottie/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     (lib.cmakeFeature "LIB_INSTALL_DIR" "${placeholder "out"}/lib")
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-U__ARM_NEON__";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) "-U__ARM_NEON__";
 
   meta = with lib; {
     homepage = "https://github.com/Samsung/rlottie";
diff --git a/pkgs/development/libraries/rnnoise-plugin/default.nix b/pkgs/development/libraries/rnnoise-plugin/default.nix
index d41459e25ead..13107bfcb13b 100644
--- a/pkgs/development/libraries/rnnoise-plugin/default.nix
+++ b/pkgs/development/libraries/rnnoise-plugin/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake pkg-config ];
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     # Ubsan seems to be broken on aarch64-darwin, it produces linker errors similar to https://github.com/NixOS/nixpkgs/issues/140751
     ./disable-ubsan.patch
   ];
@@ -38,9 +38,9 @@ stdenv.mkDerivation rec {
       pcre
       xorg.libX11
       xorg.libXrandr
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       webkitgtk
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       WebKit
       MetalKit
       CoreAudioKit
diff --git a/pkgs/development/libraries/rocksdb/default.nix b/pkgs/development/libraries/rocksdb/default.nix
index b81061639d79..fb4cc16cd7eb 100644
--- a/pkgs/development/libraries/rocksdb/default.nix
+++ b/pkgs/development/libraries/rocksdb/default.nix
@@ -11,7 +11,7 @@
 , windows
 , enableJemalloc ? false
 , jemalloc
-, enableLiburing ? stdenv.isLinux
+, enableLiburing ? stdenv.hostPlatform.isLinux
 , liburing
 , enableShared ? !stdenv.hostPlatform.isStatic
 , sse42Support ? stdenv.hostPlatform.sse4_2Support
@@ -87,9 +87,9 @@ stdenv.mkDerivation (finalAttrs: {
   preInstall = ''
     mkdir -p $tools/bin
     cp tools/{ldb,sst_dump}${stdenv.hostPlatform.extensions.executable} $tools/bin/
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     ls -1 $tools/bin/* | xargs -I{} install_name_tool -change "@rpath/librocksdb.${lib.versions.major finalAttrs.version}.dylib" $out/lib/librocksdb.dylib {}
-  '' + lib.optionalString (stdenv.isLinux && enableShared) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isLinux && enableShared) ''
     ls -1 $tools/bin/* | xargs -I{} patchelf --set-rpath $out/lib:${stdenv.cc.cc.lib}/lib {}
   '';
 
diff --git a/pkgs/development/libraries/rttr/default.nix b/pkgs/development/libraries/rttr/default.nix
index 10a16dd3f6b4..de4d81918cd0 100644
--- a/pkgs/development/libraries/rttr/default.nix
+++ b/pkgs/development/libraries/rttr/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "C++ Reflection Library";
     homepage = "https://www.rttr.org";
     license = licenses.mit;
diff --git a/pkgs/development/libraries/rubberband/default.nix b/pkgs/development/libraries/rubberband/default.nix
index 861de40a5b55..d5acb98c22a4 100644
--- a/pkgs/development/libraries/rubberband/default.nix
+++ b/pkgs/development/libraries/rubberband/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ pkg-config meson ninja jdk_headless ];
-  buildInputs = [ libsamplerate libsndfile fftw vamp-plugin-sdk ladspaH lv2 ] ++ lib.optionals stdenv.isDarwin
+  buildInputs = [ libsamplerate libsndfile fftw vamp-plugin-sdk ladspaH lv2 ] ++ lib.optionals stdenv.hostPlatform.isDarwin
     (with darwin.apple_sdk.frameworks; [Accelerate CoreGraphics CoreVideo]);
   makeFlags = [ "AR:=$(AR)" ];
 
diff --git a/pkgs/development/libraries/rustls-ffi/default.nix b/pkgs/development/libraries/rustls-ffi/default.nix
index d5d736dd2225..92dffbc2682f 100644
--- a/pkgs/development/libraries/rustls-ffi/default.nix
+++ b/pkgs/development/libraries/rustls-ffi/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-IDIWN5g1aaE6SDdXSm4WYK6n+BpuypPYQITuDj1WJEc=";
   };
 
-  propagatedBuildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   cargoLock.lockFile = ./Cargo.lock;
   postPatch = ''
diff --git a/pkgs/development/libraries/schroedinger/default.nix b/pkgs/development/libraries/schroedinger/default.nix
index b4e8831b3177..698ac7986204 100644
--- a/pkgs/development/libraries/schroedinger/default.nix
+++ b/pkgs/development/libraries/schroedinger/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config autoreconfHook ];
   buildInputs = [ orc ];
 
-  doCheck = (!stdenv.isDarwin);
+  doCheck = (!stdenv.hostPlatform.isDarwin);
 
   patchFlags = [ "-p0" ];
   patches = [
diff --git a/pkgs/development/libraries/science/astronomy/indilib/default.nix b/pkgs/development/libraries/science/astronomy/indilib/default.nix
index 78ba7f42fd50..5d7137abac2c 100644
--- a/pkgs/development/libraries/science/astronomy/indilib/default.nix
+++ b/pkgs/development/libraries/science/astronomy/indilib/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation (finalAttrs: {
   # Socket address collisions between tests
   enableParallelChecking = false;
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     for f in $out/lib/udev/rules.d/*.rules
     do
       substituteInPlace $f --replace "/bin/sh" "${bash}/bin/sh" \
diff --git a/pkgs/development/libraries/science/biology/bpp-core/default.nix b/pkgs/development/libraries/science/biology/bpp-core/default.nix
index 0d0e3c114920..673cebe59e8e 100644
--- a/pkgs/development/libraries/science/biology/bpp-core/default.nix
+++ b/pkgs/development/libraries/science/biology/bpp-core/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   # of form /nix/store/.../nix/store/.../include,
   # probably due to relative vs absolute path issue
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     homepage = "https://github.com/BioPP/bpp-core";
diff --git a/pkgs/development/libraries/science/biology/bpp-phyl/default.nix b/pkgs/development/libraries/science/biology/bpp-phyl/default.nix
index 0b18dbfcf19a..624251617479 100644
--- a/pkgs/development/libraries/science/biology/bpp-phyl/default.nix
+++ b/pkgs/development/libraries/science/biology/bpp-phyl/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
       --replace 'set(_IMPORT_PREFIX' '#set(_IMPORT_PREFIX'
   '';
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = bpp-core.meta // {
     homepage = "https://github.com/BioPP/bpp-phyl";
diff --git a/pkgs/development/libraries/science/biology/bpp-popgen/default.nix b/pkgs/development/libraries/science/biology/bpp-popgen/default.nix
index 2cb89b4bbd38..f7662766fb2c 100644
--- a/pkgs/development/libraries/science/biology/bpp-popgen/default.nix
+++ b/pkgs/development/libraries/science/biology/bpp-popgen/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   # of form /nix/store/.../nix/store/.../include,
   # probably due to relative vs absolute path issue
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = bpp-core.meta // {
     homepage = "https://github.com/BioPP/bpp-popgen";
diff --git a/pkgs/development/libraries/science/biology/bpp-seq/default.nix b/pkgs/development/libraries/science/biology/bpp-seq/default.nix
index 2f6fbf9e362c..0699c5316835 100644
--- a/pkgs/development/libraries/science/biology/bpp-seq/default.nix
+++ b/pkgs/development/libraries/science/biology/bpp-seq/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   # of form /nix/store/.../nix/store/.../include,
   # probably due to relative vs absolute path issue
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = bpp-core.meta // {
     homepage = "https://github.com/BioPP/bpp-seq";
diff --git a/pkgs/development/libraries/science/biology/elastix/default.nix b/pkgs/development/libraries/science/biology/elastix/default.nix
index 44e76244c987..46b297722feb 100644
--- a/pkgs/development/libraries/science/biology/elastix/default.nix
+++ b/pkgs/development/libraries/science/biology/elastix/default.nix
@@ -19,9 +19,9 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ itk ] ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+  buildInputs = [ itk ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
-  doCheck = !stdenv.isDarwin; # usual dynamic linker issues
+  doCheck = !stdenv.hostPlatform.isDarwin; # usual dynamic linker issues
 
   meta = with lib; {
     homepage = "https://elastix.lumc.nl";
diff --git a/pkgs/development/libraries/science/biology/gifticlib/default.nix b/pkgs/development/libraries/science/biology/gifticlib/default.nix
index 306324129cbd..b305df08860b 100644
--- a/pkgs/development/libraries/science/biology/gifticlib/default.nix
+++ b/pkgs/development/libraries/science/biology/gifticlib/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ expat nifticlib zlib ];
 
   # without the test data, this is only a few basic tests
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   checkPhase = ''
     runHook preCheck
     ctest -LE 'NEEDS_DATA'
diff --git a/pkgs/development/libraries/science/math/arpack/default.nix b/pkgs/development/libraries/science/math/arpack/default.nix
index 744d565eddcd..06503bbc7ddd 100644
--- a/pkgs/development/libraries/science/math/arpack/default.nix
+++ b/pkgs/development/libraries/science/math/arpack/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
     export OMP_NUM_THREADS=2
   '';
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change libblas.dylib ${blas}/lib/libblas.dylib $out/lib/libarpack.dylib
   '';
 
diff --git a/pkgs/development/libraries/science/math/blas/default.nix b/pkgs/development/libraries/science/math/blas/default.nix
index 4431ab63c7b7..fcb78767678e 100644
--- a/pkgs/development/libraries/science/math/blas/default.nix
+++ b/pkgs/development/libraries/science/math/blas/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     ln -s $out/lib/libblas64${canonicalExtension} $out/lib/libblas${canonicalExtension}
   '';
 
-  preFixup = lib.optionalString stdenv.isDarwin ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     for fn in $(find $out/lib -name "*.so*"); do
       if [ -L "$fn" ]; then continue; fi
       install_name_tool -id "$fn" "$fn"
diff --git a/pkgs/development/libraries/science/math/bonmin/default.nix b/pkgs/development/libraries/science/math/bonmin/default.nix
index a389c602b1b6..1cf64101face 100644
--- a/pkgs/development/libraries/science/math/bonmin/default.nix
+++ b/pkgs/development/libraries/science/math/bonmin/default.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     zlib
   ];
 
-  configureFlags = lib.optionals stdenv.isDarwin [
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "--with-asl-lib=-lipoptamplinterface -lamplsolver"
   ];
 
@@ -70,7 +70,7 @@ stdenv.mkDerivation rec {
   checkTarget = "test";
 
   # ignore one failing test
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace test/Makefile.in --replace-fail \
       "./unitTest\''$(EXEEXT)" \
       ""
diff --git a/pkgs/development/libraries/science/math/clblas/default.nix b/pkgs/development/libraries/science/math/clblas/default.nix
index 910c40a4e0c0..17dddf901819 100644
--- a/pkgs/development/libraries/science/math/clblas/default.nix
+++ b/pkgs/development/libraries/science/math/clblas/default.nix
@@ -46,15 +46,15 @@ stdenv.mkDerivation rec {
   buildInputs = [
     blas
     boost
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     ocl-icd
     opencl-headers
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Accelerate
     CoreGraphics
     CoreVideo
   ];
-  propagatedBuildInputs = lib.optionals stdenv.isDarwin [
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     OpenCL
   ];
 
diff --git a/pkgs/development/libraries/science/math/faiss/default.nix b/pkgs/development/libraries/science/math/faiss/default.nix
index 5804c7d627e9..a8e697132e90 100644
--- a/pkgs/development/libraries/science/math/faiss/default.nix
+++ b/pkgs/development/libraries/science/math/faiss/default.nix
@@ -149,6 +149,6 @@ stdenv.mkDerivation {
     platforms = lib.platforms.unix;
     maintainers = with lib.maintainers; [ SomeoneSerge ];
     # error: use of undeclared identifier 'SWIGTYPE_p_long'
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/libraries/science/math/itpp/default.nix b/pkgs/development/libraries/science/math/itpp/default.nix
index a1a1ed8a69bc..bcfe423630aa 100644
--- a/pkgs/development/libraries/science/math/itpp/default.nix
+++ b/pkgs/development/libraries/science/math/itpp/default.nix
@@ -49,6 +49,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3;
     platforms = platforms.unix;
     maintainers = [ ];
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/itpp.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/itpp.x86_64-darwin
   };
 }
diff --git a/pkgs/development/libraries/science/math/libamplsolver/default.nix b/pkgs/development/libraries/science/math/libamplsolver/default.nix
index f74808462ae1..5eaa3cf54915 100644
--- a/pkgs/development/libraries/science/math/libamplsolver/default.nix
+++ b/pkgs/development/libraries/science/math/libamplsolver/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     install -D -m 0644 *${stdenv.hostPlatform.extensions.sharedLibrary}* -t $out/lib
     install -D -m 0644 *.a -t $out/lib
     popd
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id $out/lib/libamplsolver.dylib $out/lib/libamplsolver.dylib
   '' + ''
     runHook postInstall
diff --git a/pkgs/development/libraries/science/math/liblapack/default.nix b/pkgs/development/libraries/science/math/liblapack/default.nix
index 595ba2aa5713..def5379d27c8 100644
--- a/pkgs/development/libraries/science/math/liblapack/default.nix
+++ b/pkgs/development/libraries/science/math/liblapack/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ gfortran cmake ];
 
   # Configure stage fails on aarch64-darwin otherwise, due to either clang 11 or gfortran 10.
-  hardeningDisable = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ "stackprotector" ];
+  hardeningDisable = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ "stackprotector" ];
 
   cmakeFlags = [
     "-DCMAKE_Fortran_FLAGS=-fPIC"
@@ -62,7 +62,7 @@ stdenv.mkDerivation (finalAttrs: {
   #
   # Upstream issue to track:
   # * https://github.com/Reference-LAPACK/lapack/issues/440
-  ctestArgs = lib.optionalString stdenv.isDarwin "-E '^(CBLAS-(x[sdcz]cblat[23]))$'";
+  ctestArgs = lib.optionalString stdenv.hostPlatform.isDarwin "-E '^(CBLAS-(x[sdcz]cblat[23]))$'";
 
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/development/libraries/science/math/liblbfgs/default.nix b/pkgs/development/libraries/science/math/liblbfgs/default.nix
index 26a1932bd192..d429c4c1f703 100644
--- a/pkgs/development/libraries/science/math/liblbfgs/default.nix
+++ b/pkgs/development/libraries/science/math/liblbfgs/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   meta = {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Library of Limited-memory Broyden-Fletcher-Goldfarb-Shanno (L-BFGS)";
     homepage = "http://www.chokkan.org/software/liblbfgs/";
     license = lib.licenses.mit;
diff --git a/pkgs/development/libraries/science/math/libtorch/bin.nix b/pkgs/development/libraries/science/math/libtorch/bin.nix
index 92050cd17283..f8e0dcff2bc1 100644
--- a/pkgs/development/libraries/science/math/libtorch/bin.nix
+++ b/pkgs/development/libraries/science/math/libtorch/bin.nix
@@ -23,7 +23,7 @@ let
   device = if cudaSupport then "cuda" else "cpu";
   srcs = import ./binary-hashes.nix version;
   unavailable = throw "libtorch is not available for this platform";
-  libcxx-for-libtorch = if stdenv.isDarwin then libcxx else stdenv.cc.cc.lib;
+  libcxx-for-libtorch = if stdenv.hostPlatform.isDarwin then libcxx else stdenv.cc.cc.lib;
 in stdenv.mkDerivation {
   inherit version;
   pname = "libtorch";
@@ -31,7 +31,7 @@ in stdenv.mkDerivation {
   src = fetchzip srcs."${stdenv.hostPlatform.system}-${device}" or unavailable;
 
   nativeBuildInputs =
-    if stdenv.isDarwin then [ fixDarwinDylibNames ]
+    if stdenv.hostPlatform.isDarwin then [ fixDarwinDylibNames ]
     else [ patchelf ] ++ lib.optionals cudaSupport [ addDriverRunpath ];
 
   dontBuild = true;
@@ -60,7 +60,7 @@ in stdenv.mkDerivation {
 
   postFixup = let
     rpath = lib.makeLibraryPath [ stdenv.cc.cc.lib ];
-  in lib.optionalString stdenv.isLinux ''
+  in lib.optionalString stdenv.hostPlatform.isLinux ''
     find $out/lib -type f \( -name '*.so' -or -name '*.so.*' \) | while read lib; do
       echo "setting rpath for $lib..."
       patchelf --set-rpath "${rpath}:$out/lib" "$lib"
@@ -68,7 +68,7 @@ in stdenv.mkDerivation {
         addDriverRunpath "$lib"
       ''}
     done
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     for f in $out/lib/*.dylib; do
         otool -L $f
     done
diff --git a/pkgs/development/libraries/science/math/m4rie/default.nix b/pkgs/development/libraries/science/math/m4rie/default.nix
index ac513297f159..0cda439404bb 100644
--- a/pkgs/development/libraries/science/math/m4rie/default.nix
+++ b/pkgs/development/libraries/science/math/m4rie/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   # does not compile correctly with -O2 on LLVM clang; see
   # https://bitbucket.org/malb/m4rie/issues/23/trying-to-compile-on-apple-m1
-  makeFlags = [] ++ lib.optionals stdenv.isDarwin [ "CFLAGS=-O0" ];
+  makeFlags = [] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "CFLAGS=-O0" ];
   nativeBuildInputs = [
     autoreconfHook
   ];
diff --git a/pkgs/development/libraries/science/math/mkl/default.nix b/pkgs/development/libraries/science/math/mkl/default.nix
index 607b6c89e40d..dc8b674f5c26 100644
--- a/pkgs/development/libraries/science/math/mkl/default.nix
+++ b/pkgs/development/libraries/science/math/mkl/default.nix
@@ -20,7 +20,7 @@ let
   version = "${mklVersion}.${rel}";
 
   mklVersion = "2023.1.0";
-  rel = if stdenvNoCC.isDarwin then "43558" else "46342";
+  rel = if stdenvNoCC.hostPlatform.isDarwin then "43558" else "46342";
 
   # Intel openmp uses its own versioning.
   openmpVersion = "2023.1.0";
@@ -66,17 +66,17 @@ in stdenvNoCC.mkDerivation ({
   pname = "mkl";
   inherit version;
 
-  dontUnpack = stdenvNoCC.isLinux;
+  dontUnpack = stdenvNoCC.hostPlatform.isLinux;
 
-  sourceRoot = if stdenvNoCC.isDarwin then "." else null;
+  sourceRoot = if stdenvNoCC.hostPlatform.isDarwin then "." else null;
 
-  nativeBuildInputs = [ validatePkgConfig ] ++ (if stdenvNoCC.isDarwin
+  nativeBuildInputs = [ validatePkgConfig ] ++ (if stdenvNoCC.hostPlatform.isDarwin
     then
       [ _7zz cctools ]
     else
       [ rpmextract ]);
 
-  buildPhase = if stdenvNoCC.isDarwin then ''
+  buildPhase = if stdenvNoCC.hostPlatform.isDarwin then ''
     for f in bootstrapper.app/Contents/Resources/packages/*/cupPayload.cup; do
       tar -xf $f
     done
@@ -110,9 +110,9 @@ in stdenvNoCC.mkDerivation ({
 
     # Dynamic libraries
     mkdir -p $out/lib
-    cp -a opt/intel/oneapi/mkl/${mklVersion}/lib/${lib.optionalString stdenvNoCC.isLinux "intel64"}/*${shlibExt}* $out/lib
-    cp -a opt/intel/oneapi/compiler/${mklVersion}/${if stdenvNoCC.isDarwin then "mac" else "linux"}/compiler/lib/${lib.optionalString stdenvNoCC.isLinux "intel64_lin"}/*${shlibExt}* $out/lib
-    cp -a opt/intel/oneapi/tbb/${tbbVersion}/lib/${lib.optionalString stdenvNoCC.isLinux "intel64/gcc4.8"}/*${shlibExt}* $out/lib
+    cp -a opt/intel/oneapi/mkl/${mklVersion}/lib/${lib.optionalString stdenvNoCC.hostPlatform.isLinux "intel64"}/*${shlibExt}* $out/lib
+    cp -a opt/intel/oneapi/compiler/${mklVersion}/${if stdenvNoCC.hostPlatform.isDarwin then "mac" else "linux"}/compiler/lib/${lib.optionalString stdenvNoCC.hostPlatform.isLinux "intel64_lin"}/*${shlibExt}* $out/lib
+    cp -a opt/intel/oneapi/tbb/${tbbVersion}/lib/${lib.optionalString stdenvNoCC.hostPlatform.isLinux "intel64/gcc4.8"}/*${shlibExt}* $out/lib
 
     # Headers
     cp -r opt/intel/oneapi/mkl/${mklVersion}/include $out/
@@ -121,10 +121,10 @@ in stdenvNoCC.mkDerivation ({
     cp -r opt/intel/oneapi/mkl/${mklVersion}/lib/cmake $out/lib
   '' +
     (if enableStatic then ''
-      install -Dm0644 -t $out/lib opt/intel/oneapi/mkl/${mklVersion}/lib/${lib.optionalString stdenvNoCC.isLinux "intel64"}/*.a
+      install -Dm0644 -t $out/lib opt/intel/oneapi/mkl/${mklVersion}/lib/${lib.optionalString stdenvNoCC.hostPlatform.isLinux "intel64"}/*.a
       install -Dm0644 -t $out/lib/pkgconfig opt/intel/oneapi/mkl/${mklVersion}/lib/pkgconfig/*.pc
     '' else ''
-      cp opt/intel/oneapi/mkl/${mklVersion}/lib/${lib.optionalString stdenvNoCC.isLinux "intel64"}/*${shlibExt}* $out/lib
+      cp opt/intel/oneapi/mkl/${mklVersion}/lib/${lib.optionalString stdenvNoCC.hostPlatform.isLinux "intel64"}/*${shlibExt}* $out/lib
       install -Dm0644 -t $out/lib/pkgconfig opt/intel/oneapi/mkl/${mklVersion}/lib/pkgconfig/*dynamic*.pc
     '') + ''
     # Setup symlinks for blas / lapack
@@ -142,7 +142,7 @@ in stdenvNoCC.mkDerivation ({
   # fixDarwinDylibName fails for libmkl_cdft_core.dylib because the
   # larger updated load commands do not fit. Use install_name_tool
   # explicitly and ignore the error.
-  postFixup = lib.optionalString stdenvNoCC.isDarwin ''
+  postFixup = lib.optionalString stdenvNoCC.hostPlatform.isDarwin ''
     for f in $out/lib/*.dylib; do
       install_name_tool -id $out/lib/$(basename $f) $f || true
     done
@@ -176,7 +176,7 @@ in stdenvNoCC.mkDerivation ({
     platforms = [ "x86_64-linux" "x86_64-darwin" ];
     maintainers = with maintainers; [ bhipple ];
   };
-} // lib.optionalAttrs stdenvNoCC.isDarwin {
+} // lib.optionalAttrs stdenvNoCC.hostPlatform.isDarwin {
   src = fetchurl {
     url = "https://registrationcenter-download.intel.com/akdlm/IRC_NAS/087a9190-9d96-4b8c-bd2f-79159572ed89/m_onemkl_p_${mklVersion}.${rel}_offline.dmg";
     hash = "sha256-bUaaJPSaLr60fw0DzDCjPvY/UucHlLbCSLyQxyiAi04=";
diff --git a/pkgs/development/libraries/science/math/openblas/default.nix b/pkgs/development/libraries/science/math/openblas/default.nix
index adeb03d71286..54b4f7cabd92 100644
--- a/pkgs/development/libraries/science/math/openblas/default.nix
+++ b/pkgs/development/libraries/science/math/openblas/default.nix
@@ -215,7 +215,7 @@ stdenv.mkDerivation rec {
     # This seems to be a bug in the openblas Makefile:
     # on x86_64 it expects NO_BINARY_MODE=
     # but on aarch64 it expects NO_BINARY_MODE=0
-    NO_BINARY_MODE = if stdenv.isx86_64
+    NO_BINARY_MODE = if stdenv.hostPlatform.isx86_64
         then toString (stdenv.hostPlatform != stdenv.buildPlatform)
         else stdenv.hostPlatform != stdenv.buildPlatform;
     # This disables automatic build job count detection (which honours neither enableParallelBuilding nor NIX_BUILD_CORES)
diff --git a/pkgs/development/libraries/science/math/or-tools/default.nix b/pkgs/development/libraries/science/math/or-tools/default.nix
index 43ad807a9d65..a0f599f5d706 100644
--- a/pkgs/development/libraries/science/math/or-tools/default.nix
+++ b/pkgs/development/libraries/science/math/or-tools/default.nix
@@ -66,7 +66,7 @@ stdenv.mkDerivation rec {
     "-DUSE_GLPK=ON"
     "-DUSE_SCIP=OFF"
     "-DPython3_EXECUTABLE=${python.pythonOnBuildForHost.interpreter}"
-  ] ++ lib.optionals stdenv.isDarwin [ "-DCMAKE_MACOSX_RPATH=OFF" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "-DCMAKE_MACOSX_RPATH=OFF" ];
 
   strictDeps = true;
 
@@ -77,7 +77,7 @@ stdenv.mkDerivation rec {
     python.pythonOnBuildForHost
     swig
     unzip
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     DarwinTools
   ] ++ (with python.pythonOnBuildForHost.pkgs; [
     pip
diff --git a/pkgs/development/libraries/science/math/p4est-sc/default.nix b/pkgs/development/libraries/science/math/p4est-sc/default.nix
index bb5d212061f2..39b5660494d2 100644
--- a/pkgs/development/libraries/science/math/p4est-sc/default.nix
+++ b/pkgs/development/libraries/science/math/p4est-sc/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation {
 
   # disallow Darwin checks due to prototype incompatibility of qsort_r
   # to be fixed in a future version of the source code
-  doCheck = !stdenv.isDarwin && stdenv.hostPlatform == stdenv.buildPlatform;
+  doCheck = !stdenv.hostPlatform.isDarwin && stdenv.hostPlatform == stdenv.buildPlatform;
 
   meta = {
     branch = "prev3-develop";
diff --git a/pkgs/development/libraries/science/math/scalapack/default.nix b/pkgs/development/libraries/science/math/scalapack/default.nix
index b36f48647819..f7b4ba6738d1 100644
--- a/pkgs/development/libraries/science/math/scalapack/default.nix
+++ b/pkgs/development/libraries/science/math/scalapack/default.nix
@@ -42,11 +42,11 @@ stdenv.mkDerivation rec {
   nativeCheckInputs = [ openssh mpiCheckPhaseHook ];
   buildInputs = [ blas lapack ];
   propagatedBuildInputs = [ mpi ];
-  hardeningDisable = lib.optionals (stdenv.isAarch64 && stdenv.isDarwin) [ "stackprotector" ];
+  hardeningDisable = lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin) [ "stackprotector" ];
 
   # xslu and xsllt tests seem to time out on x86_64-darwin.
   # this line is left so those who force installation on x86_64-darwin can still build
-  doCheck = !(stdenv.isx86_64 && stdenv.isDarwin);
+  doCheck = !(stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.isDarwin);
 
   preConfigure = ''
     cmakeFlagsArray+=(
@@ -81,6 +81,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     maintainers = with maintainers; [ costrouc markuskowa gdinh ];
     # xslu and xsllt tests fail on x86 darwin
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 }
diff --git a/pkgs/development/libraries/science/math/suitesparse-graphblas/default.nix b/pkgs/development/libraries/science/math/suitesparse-graphblas/default.nix
index 2d0b416d975c..f275eed52b07 100644
--- a/pkgs/development/libraries/science/math/suitesparse-graphblas/default.nix
+++ b/pkgs/development/libraries/science/math/suitesparse-graphblas/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
     export HOME=$(mktemp -d)
   '';
 
-  cmakeFlags = [ (lib.cmakeBool "GRAPHBLAS_USE_JIT" (!(stdenv.isLinux && stdenv.isAarch64))) ];
+  cmakeFlags = [ (lib.cmakeBool "GRAPHBLAS_USE_JIT" (!(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64))) ];
 
   meta = with lib; {
     description = "Graph algorithms in the language of linear algebra";
diff --git a/pkgs/development/libraries/science/math/suitesparse/4.4.nix b/pkgs/development/libraries/science/math/suitesparse/4.4.nix
index f47b5c0ce818..ef859cfc1ca2 100644
--- a/pkgs/development/libraries/science/math/suitesparse/4.4.nix
+++ b/pkgs/development/libraries/science/math/suitesparse/4.4.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
         -e '/CHOLMOD_CONFIG/ s/$/-DNPARTITION -DLONGBLAS=${int_t}/' \
         -e '/UMFPACK_CONFIG/ s/$/-DLONGBLAS=${int_t}/'
   ''
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i "SuiteSparse_config/SuiteSparse_config.mk" \
         -e 's/^[[:space:]]*\(LIB = -lm\) -lrt/\1/'
   ''
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
     "LAPACK=-llapack"
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin " -DNTIMER";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin " -DNTIMER";
 
   postInstall = ''
     # Build and install shared library
@@ -63,7 +63,7 @@ stdenv.mkDerivation rec {
         for i in "$out"/lib/lib*.a; do
           ar -x $i
         done
-        ${if enableCuda then cudatoolkit else stdenv.cc.outPath}/bin/${if enableCuda then "nvcc" else "cc"} *.o ${if stdenv.isDarwin then "-dynamiclib" else "--shared"} -o "$out/lib/libsuitesparse${SHLIB_EXT}" -lblas ${lib.optionalString enableCuda "-lcublas"}
+        ${if enableCuda then cudatoolkit else stdenv.cc.outPath}/bin/${if enableCuda then "nvcc" else "cc"} *.o ${if stdenv.hostPlatform.isDarwin then "-dynamiclib" else "--shared"} -o "$out/lib/libsuitesparse${SHLIB_EXT}" -lblas ${lib.optionalString enableCuda "-lcublas"}
     )
     for i in umfpack cholmod amd camd colamd spqr; do
       ln -s libsuitesparse${SHLIB_EXT} "$out"/lib/lib$i${SHLIB_EXT}
diff --git a/pkgs/development/libraries/science/math/suitesparse/default.nix b/pkgs/development/libraries/science/math/suitesparse/default.nix
index 43623e8604b9..28909f53fecb 100644
--- a/pkgs/development/libraries/science/math/suitesparse/default.nix
+++ b/pkgs/development/libraries/science/math/suitesparse/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ] ++ lib.optionals enableCuda [
     cudaPackages.cuda_nvcc
@@ -63,7 +63,7 @@ stdenv.mkDerivation rec {
     "CUDA_PATH=${cudaPackages.cuda_nvcc}"
     "CUDART_LIB=${lib.getLib cudaPackages.cuda_cudart}/lib/libcudart.so"
     "CUBLAS_LIB=${lib.getLib cudaPackages.libcublas}/lib/libcublas.so"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # Unless these are set, the build will attempt to use `Accelerate` on darwin, see:
     # https://github.com/DrTimothyAldenDavis/SuiteSparse/blob/v5.13.0/SuiteSparse_config/SuiteSparse_config.mk#L368
     "BLAS=-lblas"
@@ -71,7 +71,7 @@ stdenv.mkDerivation rec {
   ]
   ;
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     # Ensure that there is enough space for the `fixDarwinDylibNames` hook to
     # update the install names of the output dylibs.
     NIX_LDFLAGS = "-headerpad_max_install_names";
diff --git a/pkgs/development/libraries/science/math/sympow/default.nix b/pkgs/development/libraries/science/math/sympow/default.nix
index 91714bfd3e70..ea2ed2e83ddd 100644
--- a/pkgs/development/libraries/science/math/sympow/default.nix
+++ b/pkgs/development/libraries/science/math/sympow/default.nix
@@ -67,7 +67,7 @@ stdenv.mkDerivation rec {
       "$out/bin/sympow" -curve "[1,-1,0,-79,289]" -analrank | grep ^"Analytic Rank is 4"
       "$out/bin/sympow" -curve "[0,1,1,-2,0]" -analrank | grep ^"Analytic Rank is 2"
     ''
-    + lib.optionalString (!stdenv.isAarch64) ''
+    + lib.optionalString (!stdenv.hostPlatform.isAarch64) ''
       "$out/bin/sympow" -sp 2p16 -curve "[1,2,3,4,5]" | grep '8.3705'
     '';
 
diff --git a/pkgs/development/libraries/science/math/tiny-cuda-nn/default.nix b/pkgs/development/libraries/science/math/tiny-cuda-nn/default.nix
index e149f6bd94e2..ada84ef50767 100644
--- a/pkgs/development/libraries/science/math/tiny-cuda-nn/default.nix
+++ b/pkgs/development/libraries/science/math/tiny-cuda-nn/default.nix
@@ -158,6 +158,6 @@ in
       maintainers = with maintainers; [connorbaker];
       platforms = platforms.linux;
       # g++: error: unrecognized command-line option '-mf16c'
-      broken = stdenv.isAarch64;
+      broken = stdenv.hostPlatform.isAarch64;
     };
   })
diff --git a/pkgs/development/libraries/science/networking/ns-3/default.nix b/pkgs/development/libraries/science/networking/ns-3/default.nix
index 2e2e2a871f7a..efcfa99be0e0 100644
--- a/pkgs/development/libraries/science/networking/ns-3/default.nix
+++ b/pkgs/development/libraries/science/networking/ns-3/default.nix
@@ -137,6 +137,6 @@ stdenv.mkDerivation rec {
     platforms = with platforms; unix;
     maintainers = with maintainers; [ teto rgrunbla ];
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = (stdenv.isDarwin && stdenv.isAarch64) || (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) || (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   };
 }
diff --git a/pkgs/development/libraries/serf/default.nix b/pkgs/development/libraries/serf/default.nix
index 1a2f407f9bc2..07138596d05d 100644
--- a/pkgs/development/libraries/serf/default.nix
+++ b/pkgs/development/libraries/serf/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config scons ];
   buildInputs = [ apr openssl aprutil zlib libiconv ]
-    ++ lib.optional (!stdenv.isCygwin) libkrb5;
+    ++ lib.optional (!stdenv.hostPlatform.isCygwin) libkrb5;
 
   patches = [
     ./scons.patch
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
     sconsFlags+=" CC=$CC"
     sconsFlags+=" OPENSSL=${openssl}"
     sconsFlags+=" ZLIB=${zlib}"
-  '' + lib.optionalString (!stdenv.isCygwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isCygwin) ''
     sconsFlags+=" GSSAPI=${libkrb5.dev}"
   '';
 
diff --git a/pkgs/development/libraries/sfml/default.nix b/pkgs/development/libraries/sfml/default.nix
index c3ecd3a9866f..2b28228c5f57 100644
--- a/pkgs/development/libraries/sfml/default.nix
+++ b/pkgs/development/libraries/sfml/default.nix
@@ -45,9 +45,9 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ freetype libjpeg openal flac libvorbis glew ]
-    ++ lib.optional stdenv.isLinux udev
-    ++ lib.optionals (!stdenv.isDarwin) [ libX11 libXrandr libXrender xcbutilimage ]
-    ++ lib.optionals stdenv.isDarwin [ IOKit Foundation AppKit OpenAL ];
+    ++ lib.optional stdenv.hostPlatform.isLinux udev
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ libX11 libXrandr libXrender xcbutilimage ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit Foundation AppKit OpenAL ];
 
   cmakeFlags = [
     "-DSFML_INSTALL_PKGCONFIG_FILES=yes"
diff --git a/pkgs/development/libraries/shibboleth-sp/default.nix b/pkgs/development/libraries/shibboleth-sp/default.nix
index da63b22f9e7e..f38db198bd30 100644
--- a/pkgs/development/libraries/shibboleth-sp/default.nix
+++ b/pkgs/development/libraries/shibboleth-sp/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ boost fcgi openssl opensaml-cpp log4shib xercesc xml-security-c xml-tooling-c ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
       CoreServices
       SystemConfiguration
     ]);
diff --git a/pkgs/development/libraries/silgraphite/graphite2.nix b/pkgs/development/libraries/silgraphite/graphite2.nix
index 7f4b73c79378..d2a4206e7dc1 100644
--- a/pkgs/development/libraries/silgraphite/graphite2.nix
+++ b/pkgs/development/libraries/silgraphite/graphite2.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation (finalAttrs: {
         doFakeLibgcc = true;
       });
 
-  patches = lib.optionals stdenv.isDarwin [ ./macosx.patch ];
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [ ./macosx.patch ];
   postPatch = ''
     # disable broken 'nametabletest' test, fails on gcc-13:
     #   https://github.com/silnrsi/graphite/pull/74
diff --git a/pkgs/development/libraries/smpeg/default.nix b/pkgs/development/libraries/smpeg/default.nix
index 099a3d838bbb..d310e3653e7f 100644
--- a/pkgs/development/libraries/smpeg/default.nix
+++ b/pkgs/development/libraries/smpeg/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoconf automake libtool m4 pkg-config makeWrapper ];
 
-  buildInputs = [ SDL ] ++ lib.optionals (!stdenv.isDarwin) [ gtk2 libGLU libGL ];
+  buildInputs = [ SDL ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ gtk2 libGLU libGL ];
 
   outputs = [ "out" "dev" ];
 
diff --git a/pkgs/development/libraries/smpeg2/default.nix b/pkgs/development/libraries/smpeg2/default.nix
index 24dd9c9dc400..bcece08e6195 100644
--- a/pkgs/development/libraries/smpeg2/default.nix
+++ b/pkgs/development/libraries/smpeg2/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoconf automake makeWrapper pkg-config ];
 
   buildInputs = [ SDL2 ]
-    ++ lib.optional stdenv.isDarwin darwin.libobjc;
+    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.libobjc;
 
   outputs = [ "out" "dev" "man" ];
 
diff --git a/pkgs/development/libraries/soci/default.nix b/pkgs/development/libraries/soci/default.nix
index 007a4fbaf7bf..3ba387436e76 100644
--- a/pkgs/development/libraries/soci/default.nix
+++ b/pkgs/development/libraries/soci/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
     sqlite
     postgresql
     boost
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Kerberos
   ];
 
diff --git a/pkgs/development/libraries/sofia-sip/default.nix b/pkgs/development/libraries/sofia-sip/default.nix
index b9f34eeb9748..7b33ed04871f 100644
--- a/pkgs/development/libraries/sofia-sip/default.nix
+++ b/pkgs/development/libraries/sofia-sip/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-7QmK2UxEO5lC0KBDWB3bwKTy0Nc7WrdTLjoQYzezoaY=";
   };
 
-  buildInputs = [ glib openssl ] ++ lib.optional stdenv.isDarwin SystemConfiguration;
+  buildInputs = [ glib openssl ] ++ lib.optional stdenv.hostPlatform.isDarwin SystemConfiguration;
   nativeBuildInputs = [ autoreconfHook pkg-config ];
 
   meta = with lib; {
diff --git a/pkgs/development/libraries/sonic/default.nix b/pkgs/development/libraries/sonic/default.nix
index 4ab71b36a012..6b82b5f4f04f 100644
--- a/pkgs/development/libraries/sonic/default.nix
+++ b/pkgs/development/libraries/sonic/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
 
   postInstall = ''
     installManPage sonic.1
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id $out/lib/libsonic.so.0.3.0 $out/lib/libsonic.so.0.3.0
   '';
 
diff --git a/pkgs/development/libraries/speech-tools/default.nix b/pkgs/development/libraries/speech-tools/default.nix
index 8bee16fef753..1dbaa016cbbf 100644
--- a/pkgs/development/libraries/speech-tools/default.nix
+++ b/pkgs/development/libraries/speech-tools/default.nix
@@ -28,9 +28,9 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     ncurses
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     AudioUnit
     Cocoa
diff --git a/pkgs/development/libraries/speexdsp/default.nix b/pkgs/development/libraries/speexdsp/default.nix
index 0f5e09cf83e5..e3452beab870 100644
--- a/pkgs/development/libraries/speexdsp/default.nix
+++ b/pkgs/development/libraries/speexdsp/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   buildInputs = lib.optionals withFftw3 [ fftw ];
 
   configureFlags = lib.optionals withFftw3 [ "--with-fft=gpl-fftw3" ]
-    ++ lib.optional stdenv.isAarch64 "--disable-neon";
+    ++ lib.optional stdenv.hostPlatform.isAarch64 "--disable-neon";
 
   meta = with lib; {
     homepage = "https://www.speex.org/";
diff --git a/pkgs/development/libraries/spglib/default.nix b/pkgs/development/libraries/spglib/default.nix
index 1d3f8b489f21..75634072b8ec 100644
--- a/pkgs/development/libraries/spglib/default.nix
+++ b/pkgs/development/libraries/spglib/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake gfortran gtest ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ openmp ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ openmp ];
 
   cmakeFlags = [ "-DSPGLIB_WITH_Fortran=On" ];
 
diff --git a/pkgs/development/libraries/spice-gtk/default.nix b/pkgs/development/libraries/spice-gtk/default.nix
index fd7428213fc9..048ba14f5f93 100644
--- a/pkgs/development/libraries/spice-gtk/default.nix
+++ b/pkgs/development/libraries/spice-gtk/default.nix
@@ -37,7 +37,7 @@
 , wayland-scanner
 , zlib
 , wrapGAppsHook3
-, withPolkit ? stdenv.isLinux
+, withPolkit ? stdenv.hostPlatform.isLinux
 }:
 
 # If this package is built with polkit support (withPolkit=true),
@@ -92,7 +92,7 @@ stdenv.mkDerivation rec {
     wrapGAppsHook3
   ] ++ lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
     mesonEmulatorHook
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     wayland-scanner
   ];
 
@@ -119,7 +119,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optionals withPolkit [
     polkit
     acl
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libcap_ng
     libdrm
     wayland-protocols
@@ -132,7 +132,7 @@ stdenv.mkDerivation rec {
     "-Dusb-ids-path=${hwdata}/share/hwdata/usb.ids"
   ] ++ lib.optionals (!withPolkit) [
     "-Dpolkit=disabled"
-  ] ++ lib.optionals (!stdenv.isLinux) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isLinux) [
     "-Dlibcap-ng=disabled"
     "-Degl=disabled"
   ] ++ lib.optionals stdenv.hostPlatform.isMusl [
diff --git a/pkgs/development/libraries/spice/default.nix b/pkgs/development/libraries/spice/default.nix
index d7855cd5cea5..4ac1b1cdee11 100644
--- a/pkgs/development/libraries/spice/default.nix
+++ b/pkgs/development/libraries/spice/default.nix
@@ -67,9 +67,9 @@ stdenv.mkDerivation rec {
     python3.pkgs.pyparsing
     spice-protocol
     zlib
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     gdk-pixbuf
   ];
 
diff --git a/pkgs/development/libraries/sqlite/default.nix b/pkgs/development/libraries/sqlite/default.nix
index dd4e15ea566f..ed1499abe697 100644
--- a/pkgs/development/libraries/sqlite/default.nix
+++ b/pkgs/development/libraries/sqlite/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   };
 
   outputs = [ "bin" "dev" "out" ];
-  separateDebugInfo = stdenv.isLinux;
+  separateDebugInfo = stdenv.hostPlatform.isLinux;
 
   nativeBuildInputs = [ updateAutotoolsGnuConfigScriptsHook ];
   buildInputs = [ zlib ] ++ lib.optionals interactive [ readline ncurses ];
diff --git a/pkgs/development/libraries/sqlite/tools.nix b/pkgs/development/libraries/sqlite/tools.nix
index 2b843c0b22e0..1c8ab1f3465a 100644
--- a/pkgs/development/libraries/sqlite/tools.nix
+++ b/pkgs/development/libraries/sqlite/tools.nix
@@ -13,7 +13,7 @@ let
     };
 
     nativeBuildInputs = [ unzip ];
-    buildInputs = [ tcl ] ++ lib.optional stdenv.isDarwin Foundation;
+    buildInputs = [ tcl ] ++ lib.optional stdenv.hostPlatform.isDarwin Foundation;
 
     makeFlags = [ makeTarget ];
 
diff --git a/pkgs/development/libraries/stargate-libcds/default.nix b/pkgs/development/libraries/stargate-libcds/default.nix
index b74f19e1959a..c37365652e72 100644
--- a/pkgs/development/libraries/stargate-libcds/default.nix
+++ b/pkgs/development/libraries/stargate-libcds/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   };
 
   # Fix 'error: unrecognized command line option' in platforms other than x86
-  PLAT_FLAGS = lib.optionalString stdenv.isx86_64 "-mfpmath=sse -mssse3";
+  PLAT_FLAGS = lib.optionalString stdenv.hostPlatform.isx86_64 "-mfpmath=sse -mssse3";
 
   patches = [
     # Remove unnecessary tests (valgrind, coverage)
diff --git a/pkgs/development/libraries/stfl/default.nix b/pkgs/development/libraries/stfl/default.nix
index b79020e3ba71..91a41ac35298 100644
--- a/pkgs/development/libraries/stfl/default.nix
+++ b/pkgs/development/libraries/stfl/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   preBuild = ''
     sed -i s/gcc/cc/g Makefile
     sed -i s%ncursesw/ncurses.h%ncurses.h% stfl_internals.h
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i s/-soname/-install_name/ Makefile
   ''
   # upstream builds shared library unconditionally. Also, it has no
diff --git a/pkgs/development/libraries/stxxl/default.nix b/pkgs/development/libraries/stxxl/default.nix
index 5d58212d70c6..31d9098242c2 100644
--- a/pkgs/development/libraries/stxxl/default.nix
+++ b/pkgs/development/libraries/stxxl/default.nix
@@ -2,7 +2,7 @@
 , stdenv
 , fetchFromGitHub
 , cmake
-, parallelSupport ? (!stdenv.isDarwin)
+, parallelSupport ? (!stdenv.hostPlatform.isDarwin)
 }:
 
 let
diff --git a/pkgs/development/libraries/symengine/default.nix b/pkgs/development/libraries/symengine/default.nix
index 25043bbb0265..cbdb542dbfd9 100644
--- a/pkgs/development/libraries/symengine/default.nix
+++ b/pkgs/development/libraries/symengine/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
     "-DWITH_SYMENGINE_THREAD_SAFE=yes"
     "-DWITH_MPC=yes"
     "-DBUILD_FOR_DISTRIBUTION=yes"
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     # error: unrecognized instruction mnemonic, did you mean: bit, cnt, hint, ins, not?
     "-DBUILD_TESTS=OFF"
   ] ++ lib.optionals withShared [
diff --git a/pkgs/development/libraries/t1lib/default.nix b/pkgs/development/libraries/t1lib/default.nix
index 16112f32b1e2..e09ed7ee32dc 100644
--- a/pkgs/development/libraries/t1lib/default.nix
+++ b/pkgs/development/libraries/t1lib/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libX11 libXaw ];
   buildFlags = [ "without_doc" ];
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     # ??
     chmod +x $out/lib/*.so.*
   '';
diff --git a/pkgs/development/libraries/tachyon/default.nix b/pkgs/development/libraries/tachyon/default.nix
index 0446d2cac6e7..9520f9a8404e 100644
--- a/pkgs/development/libraries/tachyon/default.nix
+++ b/pkgs/development/libraries/tachyon/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
     url = "http://jedi.ks.uiuc.edu/~johns/tachyon/files/${version}/${pname}-${version}.tar.gz";
     sha256 = "sha256-CSA8ECMRFJ9d9cw2dAn5bHJXQmZtGcJNtbqZTVqBpvU=";
   };
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Carbon
   ] ++ lib.optionals withJpegSupport [
     libjpeg
diff --git a/pkgs/development/libraries/taco/default.nix b/pkgs/development/libraries/taco/default.nix
index 693b5f25f990..a2f2f933214c 100644
--- a/pkgs/development/libraries/taco/default.nix
+++ b/pkgs/development/libraries/taco/default.nix
@@ -25,7 +25,7 @@ in stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  buildInputs = lib.optional stdenv.isDarwin llvmPackages.openmp;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp;
 
   propagatedBuildInputs = lib.optional enablePython pyEnv;
 
diff --git a/pkgs/development/libraries/talloc/default.nix b/pkgs/development/libraries/talloc/default.nix
index 793fc1ccf5cb..eb1525fb9acb 100644
--- a/pkgs/development/libraries/talloc/default.nix
+++ b/pkgs/development/libraries/talloc/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     wafHook
     docbook-xsl-nons
     docbook_xml_dtd_42
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
 
diff --git a/pkgs/development/libraries/tbb/2020_3.nix b/pkgs/development/libraries/tbb/2020_3.nix
index dcd21b27ff33..c7e1e9127630 100644
--- a/pkgs/development/libraries/tbb/2020_3.nix
+++ b/pkgs/development/libraries/tbb/2020_3.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  nativeBuildInputs = (lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = (lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ]);
 
diff --git a/pkgs/development/libraries/tbb/2021_5.nix b/pkgs/development/libraries/tbb/2021_5.nix
index 3bfa9278106d..90e7aa2a9f2f 100644
--- a/pkgs/development/libraries/tbb/2021_5.nix
+++ b/pkgs/development/libraries/tbb/2021_5.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
     lib.optionals stdenv.cc.isClang [ "-Wno-error=unused-but-set-variable" ] ++
     # Workaround for gcc-12 ICE when using -O3
     # https://gcc.gnu.org/PR108854
-    lib.optionals (stdenv.cc.isGNU && stdenv.isx86_32) [ "-O2" ];
+    lib.optionals (stdenv.cc.isGNU && stdenv.hostPlatform.isx86_32) [ "-O2" ];
 
   # Fix undefined reference errors with version script under LLVM.
   NIX_LDFLAGS = lib.optionalString (stdenv.cc.bintools.isLLVM && lib.versionAtLeast stdenv.cc.bintools.version "17") "--undefined-version";
diff --git a/pkgs/development/libraries/tbb/default.nix b/pkgs/development/libraries/tbb/default.nix
index 73ea56b30686..3ff04d6bf1ab 100644
--- a/pkgs/development/libraries/tbb/default.nix
+++ b/pkgs/development/libraries/tbb/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
     lib.optionals stdenv.cc.isClang [ "-Wno-error=unused-but-set-variable" ] ++
     # Workaround for gcc-12 ICE when using -O3
     # https://gcc.gnu.org/PR108854
-    lib.optionals (stdenv.cc.isGNU && stdenv.isx86_32) [ "-O2" ];
+    lib.optionals (stdenv.cc.isGNU && stdenv.hostPlatform.isx86_32) [ "-O2" ];
 
   # Fix undefined reference errors with version script under LLVM.
   NIX_LDFLAGS = lib.optionalString (stdenv.cc.bintools.isLLVM && lib.versionAtLeast stdenv.cc.bintools.version "17") "--undefined-version";
diff --git a/pkgs/development/libraries/tdb/default.nix b/pkgs/development/libraries/tdb/default.nix
index d78f4abafab0..c84ded6267e1 100644
--- a/pkgs/development/libraries/tdb/default.nix
+++ b/pkgs/development/libraries/tdb/default.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     "--cross-execute=${stdenv.hostPlatform.emulator buildPackages}"
   ];
 
-  postFixup = if stdenv.isDarwin
+  postFixup = if stdenv.hostPlatform.isDarwin
     then ''install_name_tool -id $out/lib/libtdb.dylib $out/lib/libtdb.dylib''
     else null;
 
diff --git a/pkgs/development/libraries/tdlib/default.nix b/pkgs/development/libraries/tdlib/default.nix
index d02bd3b81011..f9a87aa73b51 100644
--- a/pkgs/development/libraries/tdlib/default.nix
+++ b/pkgs/development/libraries/tdlib/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation {
                  function(generate_pkgconfig' \
       --replace '\$'{prefix}/'$'{CMAKE_INSTALL_LIBDIR} '$'{CMAKE_INSTALL_FULL_LIBDIR} \
       --replace '\$'{prefix}/'$'{CMAKE_INSTALL_INCLUDEDIR} '$'{CMAKE_INSTALL_FULL_INCLUDEDIR}
-  '' + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     sed -i "/vptr/d" test/CMakeLists.txt
   '';
 
diff --git a/pkgs/development/libraries/tezos-rust-libs/default.nix b/pkgs/development/libraries/tezos-rust-libs/default.nix
index 85470f606f28..85ac4b0266c5 100644
--- a/pkgs/development/libraries/tezos-rust-libs/default.nix
+++ b/pkgs/development/libraries/tezos-rust-libs/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ llvmPackages_12.llvm cargo ];
   propagatedBuildDeps = [ llvmPackages_12.libllvm ];
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   buildPhase = ''
     runHook preBuild
diff --git a/pkgs/development/libraries/thrift/default.nix b/pkgs/development/libraries/thrift/default.nix
index 7995a3fe1699..589f03c68858 100644
--- a/pkgs/development/libraries/thrift/default.nix
+++ b/pkgs/development/libraries/thrift/default.nix
@@ -103,7 +103,7 @@ stdenv.mkDerivation rec {
   disabledTests = [
     "PythonTestSSLSocket"
     "PythonThriftTNonblockingServer"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # Tests that hang up in the Darwin sandbox
     "SecurityTest"
     "SecurityFromBufferTest"
@@ -129,7 +129,7 @@ stdenv.mkDerivation rec {
   checkPhase = ''
     runHook preCheck
 
-    ${lib.optionalString stdenv.isDarwin "DY"}LD_LIBRARY_PATH=$PWD/lib ctest -E "($(echo "$disabledTests" | tr " " "|"))"
+    ${lib.optionalString stdenv.hostPlatform.isDarwin "DY"}LD_LIBRARY_PATH=$PWD/lib ctest -E "($(echo "$disabledTests" | tr " " "|"))"
 
     runHook postCheck
   '';
diff --git a/pkgs/development/libraries/tiledb/default.nix b/pkgs/development/libraries/tiledb/default.nix
index 28b14d3a8a5b..9b834c3a7e58 100644
--- a/pkgs/development/libraries/tiledb/default.nix
+++ b/pkgs/development/libraries/tiledb/default.nix
@@ -108,7 +108,7 @@ stdenv.mkDerivation rec {
 
   installTargets = [ "install-tiledb" "doc" ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -add_rpath ${tbb}/lib $out/lib/libtiledb.dylib
   '';
 
diff --git a/pkgs/development/libraries/tinyxml/2.6.2.nix b/pkgs/development/libraries/tinyxml/2.6.2.nix
index ded5013cca99..456fd7fe2dd9 100644
--- a/pkgs/development/libraries/tinyxml/2.6.2.nix
+++ b/pkgs/development/libraries/tinyxml/2.6.2.nix
@@ -39,7 +39,7 @@ in stdenv.mkDerivation {
   hardeningDisable = [ "format" ];
 
   env.NIX_CFLAGS_COMPILE =
-    lib.optionalString stdenv.isDarwin "-mmacosx-version-min=10.9";
+    lib.optionalString stdenv.hostPlatform.isDarwin "-mmacosx-version-min=10.9";
 
   nativeBuildInputs = [ unzip ];
   buildPhase = ''
@@ -78,7 +78,7 @@ in stdenv.mkDerivation {
     cp -v tinyxml.pc $out/lib/pkgconfig/
 
     cp -v docs/* $out/share/doc/tinyxml/
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id $out/lib/libtinyxml.dylib $out/lib/libtinyxml.dylib
   '';
 
diff --git a/pkgs/development/libraries/tk/8.5.nix b/pkgs/development/libraries/tk/8.5.nix
index afd575915f85..ad0013060ff6 100644
--- a/pkgs/development/libraries/tk/8.5.nix
+++ b/pkgs/development/libraries/tk/8.5.nix
@@ -14,7 +14,7 @@ callPackage ./generic.nix (args // {
     sha256 = "1yhgcalldrjlc5q614rlzg1crgd3b52dhrk1pncdaxvl2vgg2yj0";
   };
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     # Define MODULE_SCOPE before including tkPort.h
     # https://core.tcl-lang.org/tk/info/dba9f5ce3b
     (fetchpatch {
diff --git a/pkgs/development/libraries/tk/generic.nix b/pkgs/development/libraries/tk/generic.nix
index 4978f8b96f58..232ae01abbfd 100644
--- a/pkgs/development/libraries/tk/generic.nix
+++ b/pkgs/development/libraries/tk/generic.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, src, pkg-config, tcl, libXft, patches ? []
-, enableAqua ? stdenv.isDarwin, darwin
+, enableAqua ? stdenv.hostPlatform.isDarwin, darwin
 , ... }:
 
 tcl.mkTclDerivation {
@@ -22,7 +22,7 @@ tcl.mkTclDerivation {
       substituteInPlace $file --replace "exec wish" "exec $out/bin/wish"
     done
   ''
-  + lib.optionalString (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11") ''
+  + lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11") ''
     substituteInPlace unix/configure* \
       --replace " -framework UniformTypeIdentifiers" ""
   '';
@@ -32,13 +32,13 @@ tcl.mkTclDerivation {
     cp ../{unix,generic}/*.h $out/include
     ln -s $out/lib/libtk${tcl.release}${stdenv.hostPlatform.extensions.sharedLibrary} $out/lib/libtk${stdenv.hostPlatform.extensions.sharedLibrary}
   ''
-  + lib.optionalString (stdenv.isDarwin) ''
+  + lib.optionalString (stdenv.hostPlatform.isDarwin) ''
     cp ../macosx/*.h $out/include
   '';
 
   configureFlags = [
     "--enable-threads"
-  ] ++ lib.optional stdenv.is64bit "--enable-64bit"
+  ] ++ lib.optional stdenv.hostPlatform.is64bit "--enable-64bit"
     ++ lib.optional enableAqua "--enable-aqua";
 
   nativeBuildInputs = [ pkg-config ];
diff --git a/pkgs/development/libraries/tkimg/default.nix b/pkgs/development/libraries/tkimg/default.nix
index 8b66e195d5a5..f058585d3ad9 100644
--- a/pkgs/development/libraries/tkimg/default.nix
+++ b/pkgs/development/libraries/tkimg/default.nix
@@ -16,7 +16,7 @@ tcl.mkTclDerivation rec {
     "--with-tkinclude=${tk.dev}/include"
   ];
 
-  buildInputs = [ xorg.libX11 tcllib ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  buildInputs = [ xorg.libX11 tcllib ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     Cocoa
   ]);
 
diff --git a/pkgs/development/libraries/toml-f/default.nix b/pkgs/development/libraries/toml-f/default.nix
index 3f95d5682f9e..30632e1160db 100644
--- a/pkgs/development/libraries/toml-f/default.nix
+++ b/pkgs/development/libraries/toml-f/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   outputs = [ "out" "dev" ];
 
   # tftest-build fails on aarch64-linux
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
 
   meta = with lib; {
     description = "TOML parser implementation for data serialization and deserialization in Fortran";
diff --git a/pkgs/development/libraries/tpm2-tss/default.nix b/pkgs/development/libraries/tpm2-tss/default.nix
index 6d3a29c28ba7..34b37d1c74a1 100644
--- a/pkgs/development/libraries/tpm2-tss/default.nix
+++ b/pkgs/development/libraries/tpm2-tss/default.nix
@@ -10,7 +10,7 @@ let
   # needs to be conditional based on isLinux because procps for other systems
   # might not support the withSystemd option.
   procpsWithoutSystemd = procps.override { withSystemd = false; };
-  procps_pkg = if stdenv.isLinux then procpsWithoutSystemd else procps;
+  procps_pkg = if stdenv.hostPlatform.isLinux then procpsWithoutSystemd else procps;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/development/libraries/tracker/default.nix b/pkgs/development/libraries/tracker/default.nix
index da5274e0b7df..d75bbdd542fe 100644
--- a/pkgs/development/libraries/tracker/default.nix
+++ b/pkgs/development/libraries/tracker/default.nix
@@ -79,7 +79,7 @@ stdenv.mkDerivation (finalAttrs: {
     avahi
     libstemmer
     dbus
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     systemd
   ];
 
@@ -103,15 +103,15 @@ stdenv.mkDerivation (finalAttrs: {
     [
       "--cross-file=${crossFile}"
     ]
-  ) ++ lib.optionals (!stdenv.isLinux) [
+  ) ++ lib.optionals (!stdenv.hostPlatform.isLinux) [
     "-Dsystemd_user_services=false"
   ];
 
   doCheck =
     # https://gitlab.gnome.org/GNOME/tracker/-/issues/402
-    !stdenv.isDarwin
+    !stdenv.hostPlatform.isDarwin
     # https://gitlab.gnome.org/GNOME/tracker/-/issues/398
-    && !stdenv.is32bit;
+    && !stdenv.hostPlatform.is32bit;
 
   postPatch = ''
     chmod +x \
@@ -125,8 +125,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   preCheck =
     let
-      linuxDot0 = lib.optionalString stdenv.isLinux ".0";
-      darwinDot0 = lib.optionalString stdenv.isDarwin ".0";
+      linuxDot0 = lib.optionalString stdenv.hostPlatform.isLinux ".0";
+      darwinDot0 = lib.optionalString stdenv.hostPlatform.isDarwin ".0";
       extension = stdenv.hostPlatform.extensions.sharedLibrary;
     in
     ''
diff --git a/pkgs/development/libraries/ubus/default.nix b/pkgs/development/libraries/ubus/default.nix
index 662ec1c7b035..dede0e55657a 100644
--- a/pkgs/development/libraries/ubus/default.nix
+++ b/pkgs/development/libraries/ubus/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation {
   buildInputs = [ libubox libjson ];
   nativeBuildInputs = [ cmake ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     "-Wno-error=gnu-folding-constant"
   ]);
 
diff --git a/pkgs/development/libraries/uclient/default.nix b/pkgs/development/libraries/uclient/default.nix
index 7206b6ad98fc..f758c00810ed 100644
--- a/pkgs/development/libraries/uclient/default.nix
+++ b/pkgs/development/libraries/uclient/default.nix
@@ -26,6 +26,6 @@ stdenv.mkDerivation {
     maintainers = with maintainers; [ mkg20001 ];
     mainProgram = "uclient-fetch";
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/libraries/udns/default.nix b/pkgs/development/libraries/udns/default.nix
index f9c5a80582b7..5dad256063b4 100644
--- a/pkgs/development/libraries/udns/default.nix
+++ b/pkgs/development/libraries/udns/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   # udns uses a very custom build and hardcodes a .so name in a few places.
   # Instead of fighting with it to apply the standard dylib script, change
   # the right place in the Makefile itself.
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile.in \
       --replace --soname, -install_name,$out/lib/
   '';
diff --git a/pkgs/development/libraries/unicorn/default.nix b/pkgs/development/libraries/unicorn/default.nix
index b6a91a7367a4..6b160a852d6c 100644
--- a/pkgs/development/libraries/unicorn/default.nix
+++ b/pkgs/development/libraries/unicorn/default.nix
@@ -21,18 +21,18 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     cmake
     pkg-config
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     IOKit
   ];
 
   # Ensure the linker is using atomic when compiling for RISC-V, otherwise fails
   NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isRiscV "-latomic";
 
-  cmakeFlags = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  cmakeFlags = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     # Some x86 tests are interrupted by signal 10
     "-DCMAKE_CTEST_ARGUMENTS=--exclude-regex;test_x86"
   ];
diff --git a/pkgs/development/libraries/unixODBCDrivers/default.nix b/pkgs/development/libraries/unixODBCDrivers/default.nix
index fe181d37f6bf..bd27a36d663a 100644
--- a/pkgs/development/libraries/unixODBCDrivers/default.nix
+++ b/pkgs/development/libraries/unixODBCDrivers/default.nix
@@ -39,7 +39,7 @@
 
     nativeBuildInputs = [ cmake ];
     buildInputs = [ unixODBC openssl libiconv zlib ]
-      ++ lib.optionals stdenv.isDarwin [ libkrb5 ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ libkrb5 ];
 
     cmakeFlags = [
       "-DWITH_EXTERNAL_ZLIB=ON"
@@ -50,9 +50,9 @@
       "-DWITH_IODBC=OFF"
     ];
 
-    buildFlags = if stdenv.isDarwin then [ "maodbc" ] else null;
+    buildFlags = if stdenv.hostPlatform.isDarwin then [ "maodbc" ] else null;
 
-    installTargets = if stdenv.isDarwin then [ "install/fast" ] else null;
+    installTargets = if stdenv.hostPlatform.isDarwin then [ "install/fast" ] else null;
 
     # see the top of the file for an explanation
     passthru = {
@@ -170,7 +170,7 @@
     };
 
     meta = with lib; {
-      broken = stdenv.isDarwin;
+      broken = stdenv.hostPlatform.isDarwin;
       description = "ODBC Driver ${versionMajor} for SQL Server";
       homepage = "https://docs.microsoft.com/en-us/sql/connect/odbc/linux-mac/installing-the-microsoft-odbc-driver-for-sql-server?view=sql-server-2017";
       sourceProvenance = with sourceTypes; [ binaryNativeCode ];
@@ -187,7 +187,7 @@
     versionMajor = "18";
     versionMinor = "1";
     versionAdditional = "1.1";
-    versionSuffix = lib.optionalString stdenv.isLinux "-1";
+    versionSuffix = lib.optionalString stdenv.hostPlatform.isLinux "-1";
 
     src = fetchurl {
       url = {
@@ -205,7 +205,7 @@
     };
 
     nativeBuildInputs =
-      if stdenv.isDarwin
+      if stdenv.hostPlatform.isDarwin
       then
         [
           # Fix up the names encoded into the dylib, and make them absolute.
@@ -217,12 +217,12 @@
           patchelf
         ];
 
-    unpackPhase = lib.optionalString stdenv.isLinux ''
+    unpackPhase = lib.optionalString stdenv.hostPlatform.isLinux ''
       dpkg -x $src ./
     '';
 
     installPhase =
-      if stdenv.isDarwin
+      if stdenv.hostPlatform.isDarwin
       then
         ''
           mkdir -p $out
@@ -236,14 +236,14 @@
         '';
 
     # Replace the hard-coded paths in the dylib with nixpkgs equivalents.
-    fixupPhase = lib.optionalString stdenv.isDarwin ''
+    fixupPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
       ${stdenv.cc.bintools.targetPrefix}install_name_tool \
         -change /usr/lib/libiconv.2.dylib ${libiconv}/lib/libiconv.2.dylib \
         -change /opt/homebrew/lib/libodbcinst.2.dylib ${unixODBC}/lib/libodbcinst.2.dylib \
         $out/${finalAttrs.passthru.driver}
     '';
 
-    postFixup = lib.optionalString stdenv.isLinux ''
+    postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
       patchelf --set-rpath ${lib.makeLibraryPath [ unixODBC openssl libkrb5 libuuid stdenv.cc.cc ]} \
         $out/${finalAttrs.passthru.driver}
     '';
@@ -251,7 +251,7 @@
     # see the top of the file for an explanation
     passthru = {
       fancyName = "ODBC Driver ${finalAttrs.versionMajor} for SQL Server";
-      driver = "lib/libmsodbcsql${if stdenv.isDarwin then ".${finalAttrs.versionMajor}.dylib" else "-${finalAttrs.versionMajor}.${finalAttrs.versionMinor}.so.${finalAttrs.versionAdditional}"}";
+      driver = "lib/libmsodbcsql${if stdenv.hostPlatform.isDarwin then ".${finalAttrs.versionMajor}.dylib" else "-${finalAttrs.versionMajor}.${finalAttrs.versionMinor}.so.${finalAttrs.versionAdditional}"}";
     };
 
     meta = with lib; {
@@ -300,7 +300,7 @@
     };
 
     meta = with lib; {
-      broken = stdenv.isDarwin;
+      broken = stdenv.hostPlatform.isDarwin;
       description = "Amazon Redshift ODBC driver";
       homepage = "https://docs.aws.amazon.com/redshift/latest/mgmt/configure-odbc-connection.html";
       sourceProvenance = with sourceTypes; [ binaryNativeCode ];
diff --git a/pkgs/development/libraries/v8/default.nix b/pkgs/development/libraries/v8/default.nix
index 3ea2d075602a..b6b2d4e6298f 100644
--- a/pkgs/development/libraries/v8/default.nix
+++ b/pkgs/development/libraries/v8/default.nix
@@ -101,11 +101,11 @@ stdenv.mkDerivation rec {
   '';
 
   postPatch = ''
-    ${lib.optionalString stdenv.isAarch64 ''
+    ${lib.optionalString stdenv.hostPlatform.isAarch64 ''
       substituteInPlace build/toolchain/linux/BUILD.gn \
         --replace 'toolprefix = "aarch64-linux-gnu-"' 'toolprefix = ""'
     ''}
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace build/config/compiler/compiler.gni \
         --replace 'strip_absolute_paths_from_debug_symbols = true' \
                   'strip_absolute_paths_from_debug_symbols = false'
@@ -113,7 +113,7 @@ stdenv.mkDerivation rec {
         --replace 'current_toolchain == host_toolchain || !use_xcode_clang' \
                   'false'
     ''}
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace build/config/compiler/BUILD.gn \
         --replace "-Wl,-fatal_warnings" ""
     ''}
@@ -141,7 +141,7 @@ stdenv.mkDerivation rec {
     ''host_toolchain="//build/toolchain/linux/unbundle:default"''
     ''v8_snapshot_toolchain="//build/toolchain/linux/unbundle:default"''
   ] ++ lib.optional stdenv.cc.isClang ''clang_base_path="${llvmCcAndBintools}"''
-  ++ lib.optional stdenv.isDarwin ''use_lld=false'';
+  ++ lib.optional stdenv.hostPlatform.isDarwin ''use_lld=false'';
 
   env.NIX_CFLAGS_COMPILE = toString ([
     "-O2"
@@ -155,7 +155,7 @@ stdenv.mkDerivation rec {
     ninja
     pkg-config
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     xcbuild
     llvmPackages.llvm
     python3.pkgs.setuptools
diff --git a/pkgs/development/libraries/vc/0.7.nix b/pkgs/development/libraries/vc/0.7.nix
index 50eaddda890e..fa0e6feb7df7 100644
--- a/pkgs/development/libraries/vc/0.7.nix
+++ b/pkgs/development/libraries/vc/0.7.nix
@@ -28,6 +28,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.all;
     maintainers = with maintainers; [ abbradar ];
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = (stdenv.isDarwin && stdenv.isAarch64) || (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) || (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   };
 }
diff --git a/pkgs/development/libraries/vcdimager/default.nix b/pkgs/development/libraries/vcdimager/default.nix
index 5c3140a177c3..02f959cf74ed 100644
--- a/pkgs/development/libraries/vcdimager/default.nix
+++ b/pkgs/development/libraries/vcdimager/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ libxml2 popt libiconv ]
-             ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ IOKit DiskArbitration ]);
+             ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ IOKit DiskArbitration ]);
 
   propagatedBuildInputs = [ libcdio ];
 
diff --git a/pkgs/development/libraries/vectorscan/default.nix b/pkgs/development/libraries/vectorscan/default.nix
index 835db0f3566b..8525a66e4092 100644
--- a/pkgs/development/libraries/vectorscan/default.nix
+++ b/pkgs/development/libraries/vectorscan/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     pkg-config
     ragel
     python3
-  ] ++ lib.optional stdenv.isLinux util-linux;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux util-linux;
 
   buildInputs = [
     boost184
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
     (if lib.elem stdenv.hostPlatform.system [ "x86_64-linux" "i686-linux" ] then
       [ "-DBUILD_AVX2=ON" "-DBUILD_AVX512=ON" "-DBUILD_AVX512VBMI=ON" "-DFAT_RUNTIME=ON" ]
     else
-      (if (stdenv.isLinux && stdenv.isAarch64) then
+      (if (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) then
         [ "-DBUILD_SVE=ON" "-DBUILD_SVE2=ON" "-DBUILD_SVE2_BITPERM=ON" "-DFAT_RUNTIME=ON" ]
       else
         [ "-DFAT_RUNTIME=OFF" ]
diff --git a/pkgs/development/libraries/virtualpg/default.nix b/pkgs/development/libraries/virtualpg/default.nix
index d9778decd129..e15961437002 100644
--- a/pkgs/development/libraries/virtualpg/default.nix
+++ b/pkgs/development/libraries/virtualpg/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [ postgresql sqlite ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Kerberos ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Kerberos ];
 
   meta = with lib; {
     description = "Loadable dynamic extension to both SQLite and SpatiaLite";
diff --git a/pkgs/development/libraries/vmmlib/default.nix b/pkgs/development/libraries/vmmlib/default.nix
index 11df1a495f02..d2840ba33a63 100644
--- a/pkgs/development/libraries/vmmlib/default.nix
+++ b/pkgs/development/libraries/vmmlib/default.nix
@@ -19,14 +19,14 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config cmake ];
   buildInputs = [ boost lapack ]
-    ++ lib.optionals stdenv.isDarwin [ Accelerate CoreGraphics CoreVideo ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Accelerate CoreGraphics CoreVideo ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkTarget = "test";
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Vector and matrix math library implemented using C++ templates";
 
     longDescription = ''vmmlib is a vector and matrix math library implemented
diff --git a/pkgs/development/libraries/vrpn/default.nix b/pkgs/development/libraries/vrpn/default.nix
index e233269fafd1..3272a4bbd147 100644
--- a/pkgs/development/libraries/vrpn/default.nix
+++ b/pkgs/development/libraries/vrpn/default.nix
@@ -24,12 +24,12 @@ stdenv.mkDerivation rec {
     unzip
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.GLUT
     darwin.apple_sdk.frameworks.IOKit
     darwin.apple_sdk.frameworks.OpenGL
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libGLU
     libGL
   ];
diff --git a/pkgs/development/libraries/vsqlite/default.nix b/pkgs/development/libraries/vsqlite/default.nix
index 6981de6aa074..029e4c617f46 100644
--- a/pkgs/development/libraries/vsqlite/default.nix
+++ b/pkgs/development/libraries/vsqlite/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ boost sqlite ];
 
-  prePatch = lib.optionalString stdenv.isDarwin ''
+  prePatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile.in \
         --replace '-Wl,--as-needed' "" \
         --replace '-Wl,-soname -Wl,libvsqlitepp.so.3' \
diff --git a/pkgs/development/libraries/vte/default.nix b/pkgs/development/libraries/vte/default.nix
index 87cf27f70fd4..479758ed6dee 100644
--- a/pkgs/development/libraries/vte/default.nix
+++ b/pkgs/development/libraries/vte/default.nix
@@ -92,7 +92,7 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.mesonBool "gtk4" (gtkVersion == "4"))
   ] ++ lib.optionals (!systemdSupport) [
     "-D_systemd=false"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # -Bsymbolic-functions is not supported on darwin
     "-D_b_symbolic_functions=false"
   ];
diff --git a/pkgs/development/libraries/vtk/generic.nix b/pkgs/development/libraries/vtk/generic.nix
index d131fe173ab8..3f7f05678f15 100644
--- a/pkgs/development/libraries/vtk/generic.nix
+++ b/pkgs/development/libraries/vtk/generic.nix
@@ -30,11 +30,11 @@ in stdenv.mkDerivation {
 
   buildInputs = [ libpng libtiff ]
     ++ optionals enableQt [ (qtEnv "qvtk-qt-env" [ qtx11extras qttools qtdeclarative ]) ]
-    ++ optionals stdenv.isLinux [
+    ++ optionals stdenv.hostPlatform.isLinux [
       libGLU
       xorgproto
       libXt
-    ] ++ optionals stdenv.isDarwin [
+    ] ++ optionals stdenv.hostPlatform.isDarwin [
       xpc
       AGL
       Cocoa
@@ -52,8 +52,8 @@ in stdenv.mkDerivation {
     ] ++ optionals enablePython [
       python
     ];
-  propagatedBuildInputs = optionals stdenv.isDarwin [ libobjc ]
-    ++ optionals stdenv.isLinux [ libX11 libGL ];
+  propagatedBuildInputs = optionals stdenv.hostPlatform.isDarwin [ libobjc ]
+    ++ optionals stdenv.hostPlatform.isLinux [ libX11 libGL ];
     # see https://github.com/NixOS/nixpkgs/pull/178367#issuecomment-1238827254
 
   patches = map fetchpatch patchesToFetch;
@@ -64,7 +64,7 @@ in stdenv.mkDerivation {
       -i ThirdParty/libproj/vtklibproj/src/proj_json_streaming_writer.hpp \
       -i IO/Image/vtkSEPReader.h
   ''
-  + optionalString stdenv.isDarwin ''
+  + optionalString stdenv.hostPlatform.isDarwin ''
     sed -i 's|COMMAND vtkHashSource|COMMAND "DYLD_LIBRARY_PATH=''${VTK_BINARY_DIR}/lib" ''${VTK_BINARY_DIR}/bin/vtkHashSource-${majorVersion}|' ./Parallel/Core/CMakeLists.txt
     sed -i 's/fprintf(output, shift)/fprintf(output, "%s", shift)/' ./ThirdParty/libxml2/vtklibxml2/xmlschemas.c
     sed -i 's/fprintf(output, shift)/fprintf(output, "%s", shift)/g' ./ThirdParty/libxml2/vtklibxml2/xpath.c
@@ -83,7 +83,7 @@ in stdenv.mkDerivation {
     "-DVTK_MODULE_USE_EXTERNAL_vtkpng=ON"
     "-DVTK_MODULE_USE_EXTERNAL_vtktiff=1"
     "-DVTK_MODULE_ENABLE_VTK_RenderingExternal=YES"
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     "-DOPENGL_INCLUDE_DIR=${libGL}/include"
     (lib.cmakeBool "VTK_OPENGL_HAS_EGL" enableEgl)
   ] ++ [
@@ -94,7 +94,7 @@ in stdenv.mkDerivation {
   ] ++ optionals enableQt [
     "-DVTK_GROUP_ENABLE_Qt:STRING=YES"
   ]
-    ++ optionals stdenv.isDarwin [ "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks" ]
+    ++ optionals stdenv.hostPlatform.isDarwin [ "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks" ]
     ++ optionals enablePython [
       "-DVTK_WRAP_PYTHON:BOOL=ON"
       "-DVTK_PYTHON_VERSION:STRING=${pythonMajor}"
diff --git a/pkgs/development/libraries/vulkan-headers/default.nix b/pkgs/development/libraries/vulkan-headers/default.nix
index 9b5916810ab0..3a0d14eb9b0e 100644
--- a/pkgs/development/libraries/vulkan-headers/default.nix
+++ b/pkgs/development/libraries/vulkan-headers/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
 
   # TODO: investigate why <algorithm> isn't found
-  cmakeFlags = lib.optionals stdenv.isDarwin [ "-DVULKAN_HEADERS_ENABLE_MODULE=OFF" ];
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "-DVULKAN_HEADERS_ENABLE_MODULE=OFF" ];
 
   src = fetchFromGitHub {
     owner = "KhronosGroup";
diff --git a/pkgs/development/libraries/vulkan-loader/default.nix b/pkgs/development/libraries/vulkan-loader/default.nix
index a43dda1b5f83..3c002d197ff5 100644
--- a/pkgs/development/libraries/vulkan-loader/default.nix
+++ b/pkgs/development/libraries/vulkan-loader/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   patches = [ ./fix-pkgconfig.patch ]
-    ++ lib.optionals stdenv.is32bit [
+    ++ lib.optionals stdenv.hostPlatform.is32bit [
       # Backport patch to support 64-bit inodes on 32-bit systems
       # FIXME: remove in next update
       (fetchpatch {
@@ -25,11 +25,11 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ vulkan-headers ]
-    ++ lib.optionals stdenv.isLinux [ libX11 libxcb libXrandr wayland ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libX11 libxcb libXrandr wayland ];
 
   cmakeFlags = [ "-DCMAKE_INSTALL_INCLUDEDIR=${vulkan-headers}/include" ]
-    ++ lib.optional stdenv.isDarwin "-DSYSCONFDIR=${moltenvk}/share"
-    ++ lib.optional stdenv.isLinux "-DSYSCONFDIR=${addDriverRunpath.driverLink}/share"
+    ++ lib.optional stdenv.hostPlatform.isDarwin "-DSYSCONFDIR=${moltenvk}/share"
+    ++ lib.optional stdenv.hostPlatform.isLinux "-DSYSCONFDIR=${addDriverRunpath.driverLink}/share"
     ++ lib.optional (stdenv.buildPlatform != stdenv.hostPlatform) "-DUSE_GAS=OFF";
 
   outputs = [ "out" "dev" ];
diff --git a/pkgs/development/libraries/vxl/default.nix b/pkgs/development/libraries/vxl/default.nix
index b7173ed93701..9ee55b47d457 100644
--- a/pkgs/development/libraries/vxl/default.nix
+++ b/pkgs/development/libraries/vxl/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   # test failure on aarch64-linux; unknown reason:
-  cmakeFlags = lib.optionals stdenv.isAarch64 [ "-DCMAKE_CTEST_ARGUMENTS='-E vgl_test_frustum_3d'" ];
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isAarch64 [ "-DCMAKE_CTEST_ARGUMENTS='-E vgl_test_frustum_3d'" ];
 
   doCheck = true;
 
diff --git a/pkgs/development/libraries/wangle/default.nix b/pkgs/development/libraries/wangle/default.nix
index e90d05318eac..d07145641a70 100644
--- a/pkgs/development/libraries/wangle/default.nix
+++ b/pkgs/development/libraries/wangle/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
   cmakeFlags = [
     "-Wno-dev"
     (lib.cmakeBool "BUILD_TESTS" finalAttrs.finalPackage.doCheck)
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.14" # For aligned allocation
   ];
 
@@ -64,7 +64,7 @@ stdenv.mkDerivation (finalAttrs: {
 
       # https://github.com/facebook/wangle/issues/206
       "SSLContextManagerTest.TestSessionContextCertRemoval"
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # flaky
       "BroadcastPoolTest.ThreadLocalPool"
       "Bootstrap.UDPClientServerTest"
diff --git a/pkgs/development/libraries/wayland/default.nix b/pkgs/development/libraries/wayland/default.nix
index 3cd2ba5dbe68..72ba54250b51 100644
--- a/pkgs/development/libraries/wayland/default.nix
+++ b/pkgs/development/libraries/wayland/default.nix
@@ -5,7 +5,7 @@
 , pkg-config
 , ninja
 , wayland-scanner
-, withTests ? stdenv.isLinux
+, withTests ? stdenv.hostPlatform.isLinux
 , libffi
 , epoll-shim
 , withDocumentation ? stdenv.hostPlatform == stdenv.buildPlatform
diff --git a/pkgs/development/libraries/webkitgtk/default.nix b/pkgs/development/libraries/webkitgtk/default.nix
index ecf306966c1f..5ad079e133ca 100644
--- a/pkgs/development/libraries/webkitgtk/default.nix
+++ b/pkgs/development/libraries/webkitgtk/default.nix
@@ -80,14 +80,14 @@ stdenv.mkDerivation (finalAttrs: {
 
   # https://github.com/NixOS/nixpkgs/issues/153528
   # Can't be linked within a 4GB address space.
-  separateDebugInfo = stdenv.isLinux && !stdenv.is32bit;
+  separateDebugInfo = stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.is32bit;
 
   src = fetchurl {
     url = "https://webkitgtk.org/releases/webkitgtk-${finalAttrs.version}.tar.xz";
     hash = "sha256-3ILQQuysqYGkhSNXwG5SNXQzGc8QqUzTatQbl4g6C1Q=";
   };
 
-  patches = lib.optionals stdenv.isLinux [
+  patches = lib.optionals stdenv.hostPlatform.isLinux [
     (substituteAll {
       src = ./fix-bubblewrap-paths.patch;
       inherit (builtins) storeDir;
@@ -118,7 +118,7 @@ stdenv.mkDerivation (finalAttrs: {
     gi-docgen
     glib # for gdbus-codegen
     unifdef
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     wayland-scanner
   ];
 
@@ -151,10 +151,10 @@ stdenv.mkDerivation (finalAttrs: {
     p11-kit
     sqlite
     woff2
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libedit
     readline
-  ] ++ lib.optional (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "11.0") (
+  ] ++ lib.optional (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "11.0") (
     # this can likely be removed as:
     # "libproc.h is included in the 10.12 SDK Libsystem and should be identical to this one."
     # but the package is marked broken on darwin so unable to test
@@ -166,7 +166,7 @@ stdenv.mkDerivation (finalAttrs: {
     runCommand "webkitgtk_headers" { } ''
       install -Dm444 "${lib.getDev apple_sdk.sdk}"/include/libproc.h "$out"/include/libproc.h
     ''
-  ) ++ lib.optionals stdenv.isLinux [
+  ) ++ lib.optionals stdenv.hostPlatform.isLinux [
     libseccomp
     libmanette
     wayland
@@ -200,12 +200,12 @@ stdenv.mkDerivation (finalAttrs: {
       "-DUSE_SOUP2=${cmakeBool (lib.versions.major libsoup.version == "2")}"
       "-DUSE_LIBSECRET=${cmakeBool withLibsecret}"
       "-DENABLE_EXPERIMENTAL_FEATURES=${cmakeBool enableExperimental}"
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       # Have to be explicitly specified when cross.
       # https://github.com/WebKit/WebKit/commit/a84036c6d1d66d723f217a4c29eee76f2039a353
       "-DBWRAP_EXECUTABLE=${lib.getExe bubblewrap}"
       "-DDBUS_PROXY_EXECUTABLE=${lib.getExe xdg-dbus-proxy}"
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "-DENABLE_GAMEPAD=OFF"
       "-DENABLE_GTKDOC=OFF"
       "-DENABLE_MINIBROWSER=OFF"
@@ -244,6 +244,6 @@ stdenv.mkDerivation (finalAttrs: {
     ];
     platforms = platforms.linux ++ platforms.darwin;
     maintainers = teams.gnome.members;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/development/libraries/webrtc-audio-processing/0.3.nix b/pkgs/development/libraries/webrtc-audio-processing/0.3.nix
index 3ac5e2bd4adc..a3efc646d319 100644
--- a/pkgs/development/libraries/webrtc-audio-processing/0.3.nix
+++ b/pkgs/development/libraries/webrtc-audio-processing/0.3.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
     ./enable-powerpc.patch
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ ApplicationServices ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ ApplicationServices ]);
 
   patchPhase = lib.optionalString stdenv.hostPlatform.isMusl ''
     substituteInPlace webrtc/base/checks.cc --replace 'defined(__UCLIBC__)' 1
diff --git a/pkgs/development/libraries/webrtc-audio-processing/default.nix b/pkgs/development/libraries/webrtc-audio-processing/default.nix
index b25ea77b44b4..1a34ade3cee0 100644
--- a/pkgs/development/libraries/webrtc-audio-processing/default.nix
+++ b/pkgs/development/libraries/webrtc-audio-processing/default.nix
@@ -42,9 +42,9 @@ stdenv.mkDerivation rec {
     abseil-cpp
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ ApplicationServices Foundation ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ ApplicationServices Foundation ]);
 
-  env = lib.optionalAttrs stdenv.isx86_32 {
+  env = lib.optionalAttrs stdenv.hostPlatform.isx86_32 {
     # https://gitlab.freedesktop.org/pulseaudio/webrtc-audio-processing/-/issues/5
     NIX_CFLAGS_COMPILE = "-msse2";
   };
diff --git a/pkgs/development/libraries/wolfssl/default.nix b/pkgs/development/libraries/wolfssl/default.nix
index c55ad0010d53..aeef5a8c4705 100644
--- a/pkgs/development/libraries/wolfssl/default.nix
+++ b/pkgs/development/libraries/wolfssl/default.nix
@@ -54,14 +54,14 @@ stdenv.mkDerivation (finalAttrs: {
     # Enable AVX/AVX2/AES-NI instructions, gated by runtime detection via CPUID.
     "--enable-intelasm"
     "--enable-aesni"
-  ] ++ lib.optionals (stdenv.isAarch64 && stdenv.isDarwin) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin) [
     # No runtime detection under ARM and no platform function checks like for X86.
     # However, all ARM macOS systems have the supported extensions autodetected in the configure script.
     "--enable-armasm=inline"
   ] ++ extraConfigureFlags;
 
   # Breaks tls13 tests on aarch64-darwin.
-  hardeningDisable = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ "zerocallusedregs" ];
+  hardeningDisable = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ "zerocallusedregs" ];
 
   # LTO should help with the C implementations.
   env.NIX_CFLAGS_COMPILE = lib.optionalString enableLto "-flto";
@@ -74,7 +74,7 @@ stdenv.mkDerivation (finalAttrs: {
     "out"
   ];
 
-  propagatedBuildInputs = lib.optionals stdenv.isDarwin [
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/development/libraries/wxSVG/default.nix b/pkgs/development/libraries/wxSVG/default.nix
index d14a77a67004..5182cc2ff955 100644
--- a/pkgs/development/libraries/wxSVG/default.nix
+++ b/pkgs/development/libraries/wxSVG/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     libexif
     pango
     wxGTK
-  ] ++ lib.optional stdenv.isDarwin Cocoa;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/wxsqlite3/default.nix b/pkgs/development/libraries/wxsqlite3/default.nix
index e986ab87ffac..7ad997e6d6da 100644
--- a/pkgs/development/libraries/wxsqlite3/default.nix
+++ b/pkgs/development/libraries/wxsqlite3/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook ];
 
   buildInputs = [ sqlite wxGTK ]
-    ++ lib.optionals (stdenv.isDarwin) [ Cocoa setfile rez derez ];
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ Cocoa setfile rez derez ];
 
   meta = with lib; {
     homepage = "https://utelle.github.io/wxsqlite3/";
diff --git a/pkgs/development/libraries/wxsqliteplus/default.nix b/pkgs/development/libraries/wxsqliteplus/default.nix
index 0775dca688b4..2d980c69cbe6 100644
--- a/pkgs/development/libraries/wxsqliteplus/default.nix
+++ b/pkgs/development/libraries/wxsqliteplus/default.nix
@@ -15,23 +15,23 @@ stdenv.mkDerivation rec {
     sed -i '/WX_CLEAR_ARRAY/s/$/;/' src/{createtable,sqlite3table}.cpp
   '';
 
-  buildInputs = [ wxGTK wxsqlite3 sqlite ] ++ lib.optional stdenv.isDarwin Cocoa;
+  buildInputs = [ wxGTK wxsqlite3 sqlite ] ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 
   makeFlags = [
     "LDFLAGS=-L${wxsqlite3}/lib"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "SETFILE=${setfile}/bin/SetFile"
   ];
 
   preBuild = ''
     sed -ie 's|all: $(LIBPREFIX)wxsqlite$(LIBEXT)|all: |g' Makefile
     sed -ie 's|wxsqliteplus$(EXEEXT): $(WXSQLITEPLUS_OBJECTS) $(LIBPREFIX)wxsqlite$(LIBEXT)|wxsqliteplus$(EXEEXT):  $(WXSQLITEPLUS_OBJECTS) |g' Makefile
-    sed -ie 's|-lwxsqlite |-lwxcode_${if stdenv.isDarwin then "osx_cocoau_wxsqlite3-3.2.0" else "gtk3u_wxsqlite3-3.2"} |g' Makefile
+    sed -ie 's|-lwxsqlite |-lwxcode_${if stdenv.hostPlatform.isDarwin then "osx_cocoau_wxsqlite3-3.2.0" else "gtk3u_wxsqlite3-3.2"} |g' Makefile
   '';
 
   installPhase = ''
-    install -D ${lib.optionalString stdenv.isDarwin "wxsqliteplus.app/Contents/MacOS/"}wxsqliteplus $out/bin/wxsqliteplus
-  '' + lib.optionalString stdenv.isDarwin ''
+    install -D ${lib.optionalString stdenv.hostPlatform.isDarwin "wxsqliteplus.app/Contents/MacOS/"}wxsqliteplus $out/bin/wxsqliteplus
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv wxsqliteplus.app $out/Applications/
   '';
diff --git a/pkgs/development/libraries/wxwidgets/wxGTK31.nix b/pkgs/development/libraries/wxwidgets/wxGTK31.nix
index be0c45c701dc..21333afe5e8e 100644
--- a/pkgs/development/libraries/wxwidgets/wxGTK31.nix
+++ b/pkgs/development/libraries/wxwidgets/wxGTK31.nix
@@ -18,8 +18,8 @@
 , withCurl ? false
 , withPrivateFonts ? false
 , withEGL ? true
-, withMesa ? !stdenv.isDarwin
-, withWebKit ? stdenv.isDarwin
+, withMesa ? !stdenv.hostPlatform.isDarwin
+, withWebKit ? stdenv.hostPlatform.isDarwin
 , webkitgtk
 , setfile
 , AGL
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     gst_all_1.gst-plugins-base
     gst_all_1.gstreamer
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     gtk3
     libSM
     libXinerama
@@ -64,9 +64,9 @@ stdenv.mkDerivation rec {
   ]
   ++ lib.optional withCurl curl
   ++ lib.optional withMesa libGLU
-  ++ lib.optional (withWebKit && !stdenv.isDarwin) webkitgtk
-  ++ lib.optional (withWebKit && stdenv.isDarwin) WebKit
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optional (withWebKit && !stdenv.hostPlatform.isDarwin) webkitgtk
+  ++ lib.optional (withWebKit && stdenv.hostPlatform.isDarwin) WebKit
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     setfile
     Carbon
     Cocoa
@@ -77,7 +77,7 @@ stdenv.mkDerivation rec {
     WebKit
   ];
 
-  propagatedBuildInputs = lib.optional stdenv.isDarwin AGL;
+  propagatedBuildInputs = lib.optional stdenv.hostPlatform.isDarwin AGL;
 
   configureFlags = [
     "--disable-precomp-headers"
@@ -92,7 +92,7 @@ stdenv.mkDerivation rec {
   ++ lib.optional withCurl "--enable-webrequest"
   ++ lib.optional withPrivateFonts "--enable-privatefonts"
   ++ lib.optional withMesa "--with-opengl"
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--with-osx_cocoa"
     "--with-libiconv"
   ] ++ lib.optionals withWebKit [
@@ -100,7 +100,7 @@ stdenv.mkDerivation rec {
     "--enable-webviewwebkit"
   ];
 
-  SEARCH_LIB = lib.optionalString (!stdenv.isDarwin) "${libGLU.out}/lib ${libGL.out}/lib ";
+  SEARCH_LIB = lib.optionalString (!stdenv.hostPlatform.isDarwin) "${libGLU.out}/lib ${libGL.out}/lib ";
 
   preConfigure = ''
     substituteInPlace configure --replace \
@@ -109,7 +109,7 @@ stdenv.mkDerivation rec {
       'SEARCH_LIB=' 'DUMMY_SEARCH_LIB='
     substituteInPlace configure --replace \
       /usr /no-such-path
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure --replace \
       'ac_cv_prog_SETFILE="/Developer/Tools/SetFile"' \
       'ac_cv_prog_SETFILE="${setfile}/bin/SetFile"'
diff --git a/pkgs/development/libraries/wxwidgets/wxGTK32.nix b/pkgs/development/libraries/wxwidgets/wxGTK32.nix
index a77dedb0c6ee..055000cfa68c 100644
--- a/pkgs/development/libraries/wxwidgets/wxGTK32.nix
+++ b/pkgs/development/libraries/wxwidgets/wxGTK32.nix
@@ -20,7 +20,7 @@
 , compat28 ? false
 , compat30 ? true
 , unicode ? true
-, withMesa ? !stdenv.isDarwin
+, withMesa ? !stdenv.hostPlatform.isDarwin
 , withWebKit ? true
 , webkitgtk
 , setfile
@@ -69,7 +69,7 @@ stdenv.mkDerivation rec {
     libjpeg_turbo
     zlib
     pcre2
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     gtk3
     libSM
     libXinerama
@@ -78,9 +78,9 @@ stdenv.mkDerivation rec {
     xorgproto
   ]
   ++ lib.optional withMesa libGLU
-  ++ lib.optional (withWebKit && stdenv.isLinux) webkitgtk
-  ++ lib.optional (withWebKit && stdenv.isDarwin) WebKit
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optional (withWebKit && stdenv.hostPlatform.isLinux) webkitgtk
+  ++ lib.optional (withWebKit && stdenv.hostPlatform.isDarwin) WebKit
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     expat
     setfile
     Carbon
@@ -92,7 +92,7 @@ stdenv.mkDerivation rec {
     WebKit
   ];
 
-  propagatedBuildInputs = lib.optional stdenv.isDarwin AGL;
+  propagatedBuildInputs = lib.optional stdenv.hostPlatform.isDarwin AGL;
 
   configureFlags = [
     "--disable-precomp-headers"
@@ -106,7 +106,7 @@ stdenv.mkDerivation rec {
     (if compat30 then "--enable-compat30" else "--disable-compat30")
   ] ++ lib.optional unicode "--enable-unicode"
   ++ lib.optional withMesa "--with-opengl"
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--with-osx_cocoa"
     "--with-libiconv"
   ] ++ lib.optionals withWebKit [
@@ -114,12 +114,12 @@ stdenv.mkDerivation rec {
     "--enable-webviewwebkit"
   ];
 
-  SEARCH_LIB = lib.optionalString (!stdenv.isDarwin) "${libGLU.out}/lib ${libGL.out}/lib";
+  SEARCH_LIB = lib.optionalString (!stdenv.hostPlatform.isDarwin) "${libGLU.out}/lib ${libGL.out}/lib";
 
   preConfigure = ''
     cp -r ${catch}/* 3rdparty/catch/
     cp -r ${nanosvg}/* 3rdparty/nanosvg/
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure \
       --replace 'ac_cv_prog_SETFILE="/Developer/Tools/SetFile"' 'ac_cv_prog_SETFILE="${setfile}/bin/SetFile"'
     substituteInPlace configure \
diff --git a/pkgs/development/libraries/x264/default.nix b/pkgs/development/libraries/x264/default.nix
index 2be8ea48b8e2..de4a3d8d7843 100644
--- a/pkgs/development/libraries/x264/default.nix
+++ b/pkgs/development/libraries/x264/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     ./disable-arm-neon-default.patch
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile --replace '$(if $(STRIP), $(STRIP) -x $@)' '$(if $(STRIP), $(STRIP) -S $@)'
   '';
 
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
   '';
 
   configureFlags = lib.optional enableShared "--enable-shared"
-    ++ lib.optional (!stdenv.isi686) "--enable-pic"
+    ++ lib.optional (!stdenv.hostPlatform.isi686) "--enable-pic"
     ++ lib.optional (stdenv.buildPlatform != stdenv.hostPlatform) "--cross-prefix=${stdenv.cc.targetPrefix}";
 
   makeFlags = [
diff --git a/pkgs/development/libraries/x265/default.nix b/pkgs/development/libraries/x265/default.nix
index 8e16ca72e003..a436a59aead7 100644
--- a/pkgs/development/libraries/x265/default.nix
+++ b/pkgs/development/libraries/x265/default.nix
@@ -10,14 +10,14 @@
 , numactl
 
   # Multi bit-depth support (8bit+10bit+12bit):
-, multibitdepthSupport ? (stdenv.is64bit && !(stdenv.isAarch64 && stdenv.isLinux))
+, multibitdepthSupport ? (stdenv.hostPlatform.is64bit && !(stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux))
 
   # Other options:
 , cliSupport ? true # Build standalone CLI application
 , custatsSupport ? false # Internal profiling of encoder work
 , debugSupport ? false # Run-time sanity checks (debugging)
 , ppaSupport ? false # PPA profiling instrumentation
-, unittestsSupport ? stdenv.isx86_64 # Unit tests - only testing x64 assembly
+, unittestsSupport ? stdenv.hostPlatform.isx86_64 # Unit tests - only testing x64 assembly
 , vtuneSupport ? false # Vtune profiling instrumentation
 , werrorSupport ? false # Warnings as errors
 }:
diff --git a/pkgs/development/libraries/xapian/default.nix b/pkgs/development/libraries/xapian/default.nix
index 0862fcfe25f6..c8a28166a7a4 100644
--- a/pkgs/development/libraries/xapian/default.nix
+++ b/pkgs/development/libraries/xapian/default.nix
@@ -34,13 +34,13 @@ let
 
     env = {
       AUTOMATED_TESTING = true; # https://trac.xapian.org/changeset/8be35f5e1/git
-    } // lib.optionalAttrs stdenv.is32bit {
+    } // lib.optionalAttrs stdenv.hostPlatform.is32bit {
       NIX_CFLAGS_COMPILE = "-fpermissive";
     };
 
     # the configure script thinks that Darwin has ___exp10
     # but it’s not available on my systems (or hydra apparently)
-    postConfigure = lib.optionalString stdenv.isDarwin ''
+    postConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace config.h \
         --replace "#define HAVE___EXP10 1" "#undef HAVE___EXP10"
     '';
diff --git a/pkgs/development/libraries/xavs/default.nix b/pkgs/development/libraries/xavs/default.nix
index 2d0960e3ff52..14c4b0a7e588 100644
--- a/pkgs/development/libraries/xavs/default.nix
+++ b/pkgs/development/libraries/xavs/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
     patchShebangs tools/patcheck
     patchShebangs tools/regression-test.pl
     patchShebangs tools/xavs-format
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace config.guess --replace 'uname -p' 'uname -m'
     substituteInPlace configure \
       --replace '-O4' '-O3' \
diff --git a/pkgs/development/libraries/xed/default.nix b/pkgs/development/libraries/xed/default.nix
index 1fb634a80b90..2918ae7f3fe8 100644
--- a/pkgs/development/libraries/xed/default.nix
+++ b/pkgs/development/libraries/xed/default.nix
@@ -25,7 +25,7 @@ in stdenv.mkDerivation rec {
     sha256 = "sha256-LF4iJ1/Z3OifCiir/kU3ufZqtiRLeaJeAwuBqP2BCF4=";
   };
 
-  nativeBuildInputs = [ mbuild ] ++ lib.optionals stdenv.isDarwin [ llvmPackages.bintools ];
+  nativeBuildInputs = [ mbuild ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ llvmPackages.bintools ];
 
   buildPhase = ''
     patchShebangs mfile.py
@@ -40,7 +40,7 @@ in stdenv.mkDerivation rec {
   dontInstall = true; # already installed during buildPhase
 
   meta = with lib; {
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
     description = "Intel X86 Encoder Decoder (Intel XED)";
     homepage    = "https://intelxed.github.io/";
     license     = licenses.asl20;
diff --git a/pkgs/development/libraries/xgboost/default.nix b/pkgs/development/libraries/xgboost/default.nix
index 2b96bede313d..c294551eef50 100644
--- a/pkgs/development/libraries/xgboost/default.nix
+++ b/pkgs/development/libraries/xgboost/default.nix
@@ -67,7 +67,7 @@ effectiveStdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ cmake ]
-    ++ lib.optionals effectiveStdenv.isDarwin [ llvmPackages.openmp ]
+    ++ lib.optionals effectiveStdenv.hostPlatform.isDarwin [ llvmPackages.openmp ]
     ++ lib.optionals cudaSupport [ autoAddDriverRunpath ]
     ++ lib.optionals rLibrary [ R ];
 
diff --git a/pkgs/development/libraries/xml-security-c/default.nix b/pkgs/development/libraries/xml-security-c/default.nix
index d76b2031aa3f..d36804c6bce8 100644
--- a/pkgs/development/libraries/xml-security-c/default.nix
+++ b/pkgs/development/libraries/xml-security-c/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation (finalAttrs: {
       xercesc
       openssl
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreFoundation
       CoreServices
       SystemConfiguration
diff --git a/pkgs/development/libraries/xvidcore/default.nix b/pkgs/development/libraries/xvidcore/default.nix
index 5ec3d44dfb62..9a3c150b3d25 100644
--- a/pkgs/development/libraries/xvidcore/default.nix
+++ b/pkgs/development/libraries/xvidcore/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   preConfigure = ''
     # Configure script is not in the root of the source directory
     cd build/generic
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Undocumented darwin hack
     substituteInPlace configure --replace "-no-cpp-precomp" ""
   '';
@@ -20,18 +20,18 @@ stdenv.mkDerivation rec {
   configureFlags = [ ]
     # Undocumented darwin hack (assembly is probably disabled due to an
     # issue with nasm, however yasm is now used)
-    ++ lib.optional stdenv.isDarwin "--enable-macosx_module --disable-assembly";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "--enable-macosx_module --disable-assembly";
 
   nativeBuildInputs = [ ]
-    ++ lib.optional (!stdenv.isDarwin) yasm;
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) yasm;
 
   buildInputs = [ ]
     # Undocumented darwin hack
-    ++ lib.optionals stdenv.isDarwin [ autoconf automake libtool ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ autoconf automake libtool ];
 
   # Don't remove static libraries (e.g. 'libs/*.a') on darwin.  They're needed to
   # compile ffmpeg (and perhaps other things).
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     rm $out/lib/*.a
   '';
 
diff --git a/pkgs/development/libraries/yubico-pam/default.nix b/pkgs/development/libraries/yubico-pam/default.nix
index 3af451ec84e0..e60008994b03 100644
--- a/pkgs/development/libraries/yubico-pam/default.nix
+++ b/pkgs/development/libraries/yubico-pam/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook pkg-config asciidoc libxslt docbook_xsl ];
   buildInputs = [ pam yubikey-personalization libyubikey libykclient ]
-    ++ lib.optionals stdenv.isDarwin [ CoreServices SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices SystemConfiguration ];
 
   meta = with lib; {
     description = "Yubico PAM module";
diff --git a/pkgs/development/libraries/zeroc-ice/default.nix b/pkgs/development/libraries/zeroc-ice/default.nix
index 9c8db3159396..5c6a0ba9bbe1 100644
--- a/pkgs/development/libraries/zeroc-ice/default.nix
+++ b/pkgs/development/libraries/zeroc-ice/default.nix
@@ -78,6 +78,6 @@ in stdenv.mkDerivation rec {
     license = licenses.gpl2Only;
     platforms = platforms.unix;
     maintainers = with maintainers; [ abbradar ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/lisp-modules/ql.nix b/pkgs/development/lisp-modules/ql.nix
index 91a458c0ef08..af6334671230 100644
--- a/pkgs/development/lisp-modules/ql.nix
+++ b/pkgs/development/lisp-modules/ql.nix
@@ -86,7 +86,7 @@ let
     cffi-libffi = super.cffi-libffi.overrideLispAttrs (o: {
       nativeBuildInputs = [ pkgs.libffi ];
       nativeLibs = [ pkgs.libffi ];
-      patches = lib.optionals stdenv.isDarwin [ ./patches/cffi-libffi-darwin-ffi-h.patch ];
+      patches = lib.optionals stdenv.hostPlatform.isDarwin [ ./patches/cffi-libffi-darwin-ffi-h.patch ];
     });
     cl-rabbit = super.cl-rabbit.overrideLispAttrs (o: {
       nativeBuildInputs = [ pkgs.rabbitmq-c ];
diff --git a/pkgs/development/lua-modules/nfd/default.nix b/pkgs/development/lua-modules/nfd/default.nix
index 0bd421ede7ce..66624c6f0955 100644
--- a/pkgs/development/lua-modules/nfd/default.nix
+++ b/pkgs/development/lua-modules/nfd/default.nix
@@ -24,7 +24,7 @@ buildLuarocksPackage {
   luarocksConfig.variables.LUA_LIBDIR = "${lua}/lib";
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ AppKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ];
 
   postInstall = ''
     find $out -name nfd_zenity.so -execdir mv {} nfd.so \;
diff --git a/pkgs/development/lua-modules/overrides.nix b/pkgs/development/lua-modules/overrides.nix
index 58cae66490ce..61c44022e9ec 100644
--- a/pkgs/development/lua-modules/overrides.nix
+++ b/pkgs/development/lua-modules/overrides.nix
@@ -461,7 +461,7 @@ in
     ];
   });
 
-  luasystem = prev.luasystem.overrideAttrs (oa: lib.optionalAttrs stdenv.isLinux {
+  luasystem = prev.luasystem.overrideAttrs (oa: lib.optionalAttrs stdenv.hostPlatform.isLinux {
     buildInputs = [ glibc.out ];
   });
 
@@ -503,7 +503,7 @@ in
 
     # ld: symbol(s) not found for architecture arm64
     # clang-16: error: linker command failed with exit code 1 (use -v to see invocation)
-    meta.broken = stdenv.isDarwin;
+    meta.broken = stdenv.hostPlatform.isDarwin;
   });
 
   lush-nvim = prev.lush-nvim.overrideAttrs (drv: {
@@ -644,7 +644,7 @@ in
     buildInputs = [ libuv final.lua ];
 
     nativeBuildInputs = [ pkg-config cmake ]
-      ++ lib.optionals stdenv.isDarwin [ fixDarwinDylibNames ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ fixDarwinDylibNames ];
   };
 
   luv = prev.luv.overrideAttrs (oa: {
@@ -785,7 +785,7 @@ in
   });
 
   sqlite = prev.sqlite.overrideAttrs (drv: {
-    doCheck = stdenv.isLinux;
+    doCheck = stdenv.hostPlatform.isLinux;
     nativeCheckInputs = [ final.plenary-nvim neovim-unwrapped ];
 
     # the plugin loads the library from either the LIBSQLITE env
@@ -835,7 +835,7 @@ in
       hash = "sha256-PLihirhJshcUQI3L1eTcnQiZvocDl29eQHhdBwJQRU8=";
     };
 
-    NIX_LDFLAGS = lib.optionalString stdenv.isDarwin
+    NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin
       (if lua.pkgs.isLuaJIT then "-lluajit-${lua.luaversion}" else "-llua");
 
     nativeBuildInputs = oa.nativeBuildInputs ++ [
diff --git a/pkgs/development/misc/datafusion/default.nix b/pkgs/development/misc/datafusion/default.nix
index 78b8023c5f6d..b89e915a7742 100644
--- a/pkgs/development/misc/datafusion/default.nix
+++ b/pkgs/development/misc/datafusion/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-0a/O9nNi3JLufQxG+5EgCXtV0y03X7R6UY+f/tVGB90=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/misc/juce/default.nix b/pkgs/development/misc/juce/default.nix
index 0899a948019e..f0c54f1dca20 100644
--- a/pkgs/development/misc/juce/default.nix
+++ b/pkgs/development/misc/juce/default.nix
@@ -48,11 +48,11 @@ stdenv.mkDerivation (finalAttrs: {
     curl # libcurl.so
     stdenv.cc.cc.lib # libstdc++.so libgcc_s.so
     pcre # libpcre2.pc
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib # libasound.so
     libglvnd # libGL.so
     webkitgtk # webkit2gtk-4.0
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
     darwin.apple_sdk.frameworks.MetalKit
     darwin.apple_sdk.frameworks.WebKit
diff --git a/pkgs/development/misc/msp430/mspdebug.nix b/pkgs/development/misc/msp430/mspdebug.nix
index 18462c456ce2..c24ca3b0c262 100644
--- a/pkgs/development/misc/msp430/mspdebug.nix
+++ b/pkgs/development/misc/msp430/mspdebug.nix
@@ -10,7 +10,7 @@
 , enableMspds ? false
 }:
 
-assert stdenv.isDarwin -> hidapi != null && pkg-config != null;
+assert stdenv.hostPlatform.isDarwin -> hidapi != null && pkg-config != null;
 assert enableReadline -> readline != null;
 assert enableMspds -> mspds != null;
 
@@ -25,13 +25,13 @@ stdenv.mkDerivation rec {
   };
 
   enableParallelBuilding = true;
-  nativeBuildInputs = lib.optional stdenv.isDarwin pkg-config
-  ++ lib.optional (enableMspds && stdenv.isLinux) autoPatchelfHook;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin pkg-config
+  ++ lib.optional (enableMspds && stdenv.hostPlatform.isLinux) autoPatchelfHook;
   buildInputs = [ libusb-compat-0_1 ]
-  ++ lib.optional stdenv.isDarwin hidapi
+  ++ lib.optional stdenv.hostPlatform.isDarwin hidapi
   ++ lib.optional enableReadline readline;
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # TODO: remove once a new 0.26+ release is made
     substituteInPlace drivers/tilib_api.c --replace .so ${stdenv.hostPlatform.extensions.sharedLibrary}
 
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
 
   # TODO: wrap with MSPDEBUG_TILIB_PATH env var instead of these rpath fixups in 0.26+
   runtimeDependencies = lib.optional enableMspds mspds;
-  postFixup = lib.optionalString (enableMspds && stdenv.isDarwin) ''
+  postFixup = lib.optionalString (enableMspds && stdenv.hostPlatform.isDarwin) ''
     # autoPatchelfHook only works on linux so...
     for dep in $runtimeDependencies; do
       install_name_tool -add_rpath $dep/lib $out/bin/$pname
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
   installFlags = [ "PREFIX=$(out)" "INSTALL=install" ];
   makeFlags = [ "UNAME_S=$(unameS)" ] ++
     lib.optional (!enableReadline) "WITHOUT_READLINE=1";
-  unameS = lib.optionalString stdenv.isDarwin "Darwin";
+  unameS = lib.optionalString stdenv.hostPlatform.isDarwin "Darwin";
 
   meta = with lib; {
     description = "Free programmer, debugger, and gdb proxy for MSP430 MCUs";
diff --git a/pkgs/development/misc/msp430/mspds/binary.nix b/pkgs/development/misc/msp430/mspds/binary.nix
index 3558599c2de0..4dc3ec869bda 100644
--- a/pkgs/development/misc/msp430/mspds/binary.nix
+++ b/pkgs/development/misc/msp430/mspds/binary.nix
@@ -1,7 +1,7 @@
 { stdenv, lib, fetchurl, unzip, autoPatchelfHook }:
 
 let
-  archPostfix = lib.optionalString (stdenv.is64bit && !stdenv.isDarwin) "_64";
+  archPostfix = lib.optionalString (stdenv.hostPlatform.is64bit && !stdenv.hostPlatform.isDarwin) "_64";
 in stdenv.mkDerivation rec {
   pname = "msp-debug-stack-bin";
   version = "3.15.1.1";
@@ -16,7 +16,7 @@ in stdenv.mkDerivation rec {
     else "libmsp430${archPostfix}${stdenv.hostPlatform.extensions.sharedLibrary}";
 
   nativeBuildInputs = [ unzip ]
-    ++ lib.optional stdenv.isLinux autoPatchelfHook;
+    ++ lib.optional stdenv.hostPlatform.isLinux autoPatchelfHook;
   buildInputs = [ stdenv.cc.cc ];
 
   installPhase = ''
diff --git a/pkgs/development/misc/msp430/mspds/default.nix b/pkgs/development/misc/msp430/mspds/default.nix
index 75dd08805f3f..17ee5cd76c50 100644
--- a/pkgs/development/misc/msp430/mspds/default.nix
+++ b/pkgs/development/misc/msp430/mspds/default.nix
@@ -6,10 +6,10 @@
 , libusb1 ? null
 }:
 
-assert stdenv.isLinux -> libusb1 != null;
+assert stdenv.hostPlatform.isLinux -> libusb1 != null;
 
 let
-  hidapiDriver = lib.optionalString stdenv.isLinux "-libusb";
+  hidapiDriver = lib.optionalString stdenv.hostPlatform.isLinux "-libusb";
 
 in stdenv.mkDerivation {
   pname = "msp-debug-stack";
@@ -32,7 +32,7 @@ in stdenv.mkDerivation {
   preBuild = ''
     rm ThirdParty/src/pugixml.cpp
     rm ThirdParty/include/pugi{config,xml}.hpp
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     makeFlagsArray+=(OUTNAME="-install_name ")
   '';
 
@@ -43,7 +43,7 @@ in stdenv.mkDerivation {
 
   nativeBuildInputs = [ unzip ];
   buildInputs = [ boost hidapi pugixml ]
-    ++ lib.optional stdenv.isLinux libusb1;
+    ++ lib.optional stdenv.hostPlatform.isLinux libusb1;
 
   meta = with lib; {
     description = "TI MSP430 FET debug driver";
diff --git a/pkgs/development/misc/resholve/test.nix b/pkgs/development/misc/resholve/test.nix
index ab61884963aa..654f8a4577f5 100644
--- a/pkgs/development/misc/resholve/test.nix
+++ b/pkgs/development/misc/resholve/test.nix
@@ -234,7 +234,7 @@ rec {
       ncurses
       procps
       ps
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       nixos-install-tools
       nixos-rebuild
     ];
@@ -258,7 +258,7 @@ rec {
     tset fake args
     ps fake args
     top fake args
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     nixos-generate-config fake args
     nixos-rebuild fake args
   '');
@@ -279,7 +279,7 @@ rec {
   inherit shunit2;
   inherit xdg-utils;
   inherit yadm;
-} // lib.optionalAttrs stdenv.isLinux {
+} // lib.optionalAttrs stdenv.hostPlatform.isLinux {
   inherit arch-install-scripts;
   inherit dgoss;
   inherit rancid;
@@ -287,6 +287,6 @@ rec {
   inherit wgnord;
   inherit wsl-vpnkit;
   inherit zxfer;
-} // lib.optionalAttrs (stdenv.isLinux && (stdenv.isi686 || stdenv.isx86_64)) {
+} // lib.optionalAttrs (stdenv.hostPlatform.isLinux && (stdenv.hostPlatform.isi686 || stdenv.hostPlatform.isx86_64)) {
   inherit s0ix-selftest-tool;
 }
diff --git a/pkgs/development/mobile/androidenv/cmake.nix b/pkgs/development/mobile/androidenv/cmake.nix
index 7df24ad4cc22..833c96a2691c 100644
--- a/pkgs/development/mobile/androidenv/cmake.nix
+++ b/pkgs/development/mobile/androidenv/cmake.nix
@@ -2,7 +2,7 @@
 
 deployAndroidPackage {
   inherit package os;
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
   buildInputs = lib.optionals (os == "linux") [ pkgs.stdenv.cc.libc pkgs.stdenv.cc.cc pkgs.ncurses5 ];
   patchInstructions = lib.optionalString (os == "linux") ''
     autoPatchelf $packageBaseDir/bin
diff --git a/pkgs/development/mobile/androidenv/cmdline-tools.nix b/pkgs/development/mobile/androidenv/cmdline-tools.nix
index 0279b948a7ab..3c05fa8634c2 100644
--- a/pkgs/development/mobile/androidenv/cmdline-tools.nix
+++ b/pkgs/development/mobile/androidenv/cmdline-tools.nix
@@ -4,7 +4,7 @@ deployAndroidPackage {
   name = "androidsdk";
   inherit package os;
   nativeBuildInputs = [ makeWrapper ]
-    ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   patchInstructions = ''
     ${lib.optionalString (os == "linux") ''
diff --git a/pkgs/development/mobile/androidenv/compose-android-packages.nix b/pkgs/development/mobile/androidenv/compose-android-packages.nix
index 72dc64a7e0c2..a880c8fc9190 100644
--- a/pkgs/development/mobile/androidenv/compose-android-packages.nix
+++ b/pkgs/development/mobile/androidenv/compose-android-packages.nix
@@ -27,8 +27,8 @@
 
 let
   # Determine the Android os identifier from Nix's system identifier
-  os = if stdenv.isLinux then "linux"
-    else if stdenv.isDarwin then "macosx"
+  os = if stdenv.hostPlatform.isLinux then "linux"
+    else if stdenv.hostPlatform.isDarwin then "macosx"
     else throw "No Android SDK tarballs are available for system architecture: ${stdenv.system}";
 
   # Uses mkrepo.rb to create a repo spec.
diff --git a/pkgs/development/mobile/androidenv/ndk-bundle/default.nix b/pkgs/development/mobile/androidenv/ndk-bundle/default.nix
index 30a2e8171acc..b9c11cb46e97 100644
--- a/pkgs/development/mobile/androidenv/ndk-bundle/default.nix
+++ b/pkgs/development/mobile/androidenv/ndk-bundle/default.nix
@@ -10,7 +10,7 @@ in
 deployAndroidPackage rec {
   inherit package os;
   nativeBuildInputs = [ makeWrapper ]
-    ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
   autoPatchelfIgnoreMissingDeps = [ "*" ];
   buildInputs = lib.optionals (os == "linux") [ pkgs.zlib pkgs.libcxx stdenv.cc.cc.lib ];
 
@@ -71,7 +71,7 @@ deployAndroidPackage rec {
   '';
 
   patchInstructions = patchOsAgnostic
-    + lib.optionalString stdenv.isLinux patchElfBnaries;
+    + lib.optionalString stdenv.hostPlatform.isLinux patchElfBnaries;
 
   noAuditTmpdir = true; # Audit script gets invoked by the build/ component in the path for the make standalone script
 }
diff --git a/pkgs/development/mobile/androidenv/patcher.nix b/pkgs/development/mobile/androidenv/patcher.nix
index c0252839cf23..f525033d236a 100644
--- a/pkgs/development/mobile/androidenv/patcher.nix
+++ b/pkgs/development/mobile/androidenv/patcher.nix
@@ -2,7 +2,7 @@
 
 deployAndroidPackage {
   inherit package os;
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
   patchInstructions = lib.optionalString (os == "linux") ''
     autoPatchelf $packageBaseDir/bin
   '';
diff --git a/pkgs/development/mobile/gomobile/default.nix b/pkgs/development/mobile/gomobile/default.nix
index c234c81d3894..61e3bb75617c 100644
--- a/pkgs/development/mobile/gomobile/default.nix
+++ b/pkgs/development/mobile/gomobile/default.nix
@@ -26,7 +26,7 @@ buildGoModule {
   doCheck = false;
 
   nativeBuildInputs = [ makeWrapper ]
-    ++ lib.optionals stdenv.isDarwin [ xcodeWrapper ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcodeWrapper ];
 
   # Prevent a non-deterministic temporary directory from polluting the resulting object files
   postPatch = ''
diff --git a/pkgs/development/mobile/titaniumenv/build-app.nix b/pkgs/development/mobile/titaniumenv/build-app.nix
index 42b70c64abe9..ef36dced9a31 100644
--- a/pkgs/development/mobile/titaniumenv/build-app.nix
+++ b/pkgs/development/mobile/titaniumenv/build-app.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation ({
   buildPhase = ''
     ${preBuild}
 
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
       # Hack that provides a writable alloy package on macOS. Without it the build fails because of a file permission error.
       alloy=$(dirname $(type -p alloy))/..
       cp -rv $alloy/* alloy
@@ -76,7 +76,7 @@ stdenv.mkDerivation ({
       export GRADLE_USER_HOME=$TMPDIR/gradle
 
       ${if release then ''
-        ${lib.optionalString stdenv.isDarwin ''
+        ${lib.optionalString stdenv.hostPlatform.isDarwin ''
           # Signing the app does not work with OpenJDK on macOS, use host SDK instead
           export JAVA_HOME="$(/usr/libexec/java_home -v 1.8)"
         ''}
diff --git a/pkgs/development/mobile/xcodeenv/compose-xcodewrapper.nix b/pkgs/development/mobile/xcodeenv/compose-xcodewrapper.nix
index 5a888fb13b29..13c8e6e81827 100644
--- a/pkgs/development/mobile/xcodeenv/compose-xcodewrapper.nix
+++ b/pkgs/development/mobile/xcodeenv/compose-xcodewrapper.nix
@@ -3,7 +3,7 @@
   writeShellScriptBin }:
 { versions ? [ ] , xcodeBaseDir ? "/Applications/Xcode.app" }:
 
-assert stdenv.isDarwin;
+assert stdenv.hostPlatform.isDarwin;
 let
   xcodebuildPath = "${xcodeBaseDir}/Contents/Developer/usr/bin/xcodebuild";
 
diff --git a/pkgs/development/mobile/xpwn/default.nix b/pkgs/development/mobile/xpwn/default.nix
index efd8d538c090..8693282e4ee1 100644
--- a/pkgs/development/mobile/xpwn/default.nix
+++ b/pkgs/development/mobile/xpwn/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ zlib libpng bzip2 libusb-compat-0_1 openssl ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage    = "http://planetbeing.lighthouseapp.com/projects/15246-xpwn";
     description = "Custom NOR firmware loader/IPSW generator for the iPhone";
     license     = licenses.gpl3Plus;
diff --git a/pkgs/development/node-packages/composition.nix b/pkgs/development/node-packages/composition.nix
index 2e54104d7dce..4bd736ddc723 100644
--- a/pkgs/development/node-packages/composition.nix
+++ b/pkgs/development/node-packages/composition.nix
@@ -8,7 +8,7 @@ let
   nodeEnv = import ./node-env.nix {
     inherit (pkgs) stdenv lib python2 runCommand writeTextFile writeShellScript;
     inherit pkgs nodejs;
-    libtool = if pkgs.stdenv.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
+    libtool = if pkgs.stdenv.hostPlatform.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
   };
 in
 import ./node-packages.nix {
diff --git a/pkgs/development/node-packages/node-env.nix b/pkgs/development/node-packages/node-env.nix
index bc1e36628ac8..eb94495aeba3 100644
--- a/pkgs/development/node-packages/node-env.nix
+++ b/pkgs/development/node-packages/node-env.nix
@@ -499,8 +499,8 @@ let
     stdenv.mkDerivation ({
       name = "${name}${if version == null then "" else "-${version}"}";
       buildInputs = [ tarWrapper python nodejs ]
-        ++ lib.optional (stdenv.isLinux) utillinux
-        ++ lib.optional (stdenv.isDarwin) libtool
+        ++ lib.optional (stdenv.hostPlatform.isLinux) utillinux
+        ++ lib.optional (stdenv.hostPlatform.isDarwin) libtool
         ++ buildInputs;
 
       inherit nodejs;
@@ -591,8 +591,8 @@ let
         name = "node-dependencies-${name}${if version == null then "" else "-${version}"}";
 
         buildInputs = [ tarWrapper python nodejs ]
-          ++ lib.optional (stdenv.isLinux) utillinux
-          ++ lib.optional (stdenv.isDarwin) libtool
+          ++ lib.optional (stdenv.hostPlatform.isLinux) utillinux
+          ++ lib.optional (stdenv.hostPlatform.isDarwin) libtool
           ++ buildInputs;
 
         inherit dontStrip; # Stripping may fail a build for some package deployments
@@ -662,7 +662,7 @@ let
     stdenv.mkDerivation ({
       name = "node-shell-${name}${if version == null then "" else "-${version}"}";
 
-      buildInputs = [ python nodejs ] ++ lib.optional (stdenv.isLinux) utillinux ++ buildInputs;
+      buildInputs = [ python nodejs ] ++ lib.optional (stdenv.hostPlatform.isLinux) utillinux ++ buildInputs;
       buildCommand = ''
         mkdir -p $out/bin
         cat > $out/bin/shell <<EOF
diff --git a/pkgs/development/node-packages/overrides.nix b/pkgs/development/node-packages/overrides.nix
index 68e91ca81853..5424ad35afa6 100644
--- a/pkgs/development/node-packages/overrides.nix
+++ b/pkgs/development/node-packages/overrides.nix
@@ -47,7 +47,7 @@ final: prev: {
 
   expo-cli = prev."expo-cli".override (oldAttrs: {
     # The traveling-fastlane-darwin optional dependency aborts build on Linux.
-    dependencies = builtins.filter (d: d.packageName != "@expo/traveling-fastlane-${if stdenv.isLinux then "darwin" else "linux"}") oldAttrs.dependencies;
+    dependencies = builtins.filter (d: d.packageName != "@expo/traveling-fastlane-${if stdenv.hostPlatform.isLinux then "darwin" else "linux"}") oldAttrs.dependencies;
   });
 
   fast-cli = prev.fast-cli.override {
@@ -92,7 +92,7 @@ final: prev: {
     nativeBuildInputs = [
       pkgs.pkg-config
       (pkgs.python3.withPackages (ps: [ ps.setuptools ]))
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       pkgs.xcbuild
     ];
     buildInputs = with pkgs; [
@@ -107,7 +107,7 @@ final: prev: {
       pixman
       cairo
       pango
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.AppKit
       darwin.apple_sdk.frameworks.Security
     ];
@@ -128,7 +128,7 @@ final: prev: {
 
     meta = oldAttrs.meta // {
       # ModuleNotFoundError: No module named 'distutils'
-      broken = stdenv.isDarwin; # still broken on darwin
+      broken = stdenv.hostPlatform.isDarwin; # still broken on darwin
     };
   });
 
@@ -151,7 +151,7 @@ final: prev: {
       pixman
       cairo
       pango
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreText
     ];
   };
@@ -160,7 +160,7 @@ final: prev: {
     nativeBuildInputs = [ pkgs.buildPackages.makeWrapper ];
     postFixup = ''
       wrapProgram "$out/bin/makam" --prefix PATH : ${lib.makeBinPath [ nodejs ]}
-      ${lib.optionalString stdenv.isLinux "patchelf --set-interpreter ${stdenv.cc.libc}/lib/ld-linux-x86-64.so.2 \"$out/lib/node_modules/makam/makam-bin-linux64\""}
+      ${lib.optionalString stdenv.hostPlatform.isLinux "patchelf --set-interpreter ${stdenv.cc.libc}/lib/ld-linux-x86-64.so.2 \"$out/lib/node_modules/makam/makam-bin-linux64\""}
     '';
   };
 
@@ -243,10 +243,10 @@ final: prev: {
   in{
     nativeBuildInputs = [ pkgs.buildPackages.makeWrapper ];
     dependencies = oldAttrs.dependencies
-      ++ lib.optional (stdenv.isLinux && stdenv.isx86_64) esbuild-linux-x64
-      ++ lib.optional (stdenv.isLinux && stdenv.isAarch64) esbuild-linux-arm64
-      ++ lib.optional (stdenv.isDarwin && stdenv.isx86_64) esbuild-darwin-x64
-      ++ lib.optional (stdenv.isDarwin && stdenv.isAarch64) esbuild-darwin-arm64;
+      ++ lib.optional (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64) esbuild-linux-x64
+      ++ lib.optional (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) esbuild-linux-arm64
+      ++ lib.optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) esbuild-darwin-x64
+      ++ lib.optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) esbuild-darwin-arm64;
     postInstall = ''
       wrapProgram "$out/bin/postcss" \
         --prefix NODE_PATH : ${final.postcss}/lib/node_modules \
@@ -353,7 +353,7 @@ final: prev: {
       cairo
       pango
       libjpeg
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreText
     ];
   };
@@ -383,7 +383,7 @@ final: prev: {
       pixman
       cairo
       pango
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreText
     ];
   };
diff --git a/pkgs/development/ocaml-modules/apron/default.nix b/pkgs/development/ocaml-modules/apron/default.nix
index fb93fd2f1875..7b993168e167 100644
--- a/pkgs/development/ocaml-modules/apron/default.nix
+++ b/pkgs/development/ocaml-modules/apron/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   configurePhase = ''
     runHook preConfigure
-    ./configure -prefix $out ${lib.optionalString stdenv.isDarwin "--no-strip"}
+    ./configure -prefix $out ${lib.optionalString stdenv.hostPlatform.isDarwin "--no-strip"}
     mkdir -p $out/lib/ocaml/${ocaml.version}/site-lib/stublibs
     runHook postConfigure
   '';
diff --git a/pkgs/development/ocaml-modules/arp/default.nix b/pkgs/development/ocaml-modules/arp/default.nix
index a4facc6cddfc..b8cc579e5661 100644
--- a/pkgs/development/ocaml-modules/arp/default.nix
+++ b/pkgs/development/ocaml-modules/arp/default.nix
@@ -47,7 +47,7 @@ buildDunePackage rec {
   ];
 
   ## NOTE: As of 18 april 2023 and ARP version 3.0.0, tests fail on Darwin.
-  doCheck = ! stdenv.isDarwin;
+  doCheck = ! stdenv.hostPlatform.isDarwin;
   checkInputs = [
     alcotest
     mirage-clock-unix
diff --git a/pkgs/development/ocaml-modules/bjack/default.nix b/pkgs/development/ocaml-modules/bjack/default.nix
index 197d31638d61..21052759233a 100644
--- a/pkgs/development/ocaml-modules/bjack/default.nix
+++ b/pkgs/development/ocaml-modules/bjack/default.nix
@@ -11,7 +11,7 @@ buildDunePackage rec {
     hash = "sha256-jIxxqBVWphWYyLh+24rTxk4WWfPPdGCvNdevFJEKw70=";
   };
 
-  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.isDarwin [ Accelerate CoreAudio ];
+  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Accelerate CoreAudio ];
   propagatedBuildInputs = [ libsamplerate libjack2 ];
 
   meta = with lib; {
diff --git a/pkgs/development/ocaml-modules/cairo2/default.nix b/pkgs/development/ocaml-modules/cairo2/default.nix
index 0b560f2004f6..eefac702d7ef 100644
--- a/pkgs/development/ocaml-modules/cairo2/default.nix
+++ b/pkgs/development/ocaml-modules/cairo2/default.nix
@@ -14,9 +14,9 @@ buildDunePackage rec {
   useDune2 = true;
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ cairo dune-configurator ] ++ lib.optionals stdenv.isDarwin [ ApplicationServices ];
+  buildInputs = [ cairo dune-configurator ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ ApplicationServices ];
 
-  doCheck = !(stdenv.isDarwin
+  doCheck = !(stdenv.hostPlatform.isDarwin
   # https://github.com/Chris00/ocaml-cairo/issues/19
   || lib.versionAtLeast ocaml.version "4.10");
 
diff --git a/pkgs/development/ocaml-modules/camomile/default.nix b/pkgs/development/ocaml-modules/camomile/default.nix
index e4856062adb1..94e858ff9fb4 100644
--- a/pkgs/development/ocaml-modules/camomile/default.nix
+++ b/pkgs/development/ocaml-modules/camomile/default.nix
@@ -36,7 +36,7 @@ let params =
         hash = "sha256-HklX+VPD0Ta3Knv++dBT2rhsDSlDRH90k4Cj1YtWIa8=";
       };
 
-      nativeBuildInputs = lib.optional stdenv.isDarwin darwin.sigtool;
+      nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin darwin.sigtool;
 
       propagatedBuildInputs = [ camlp-streams dune-site ];
     };
diff --git a/pkgs/development/ocaml-modules/cpu/default.nix b/pkgs/development/ocaml-modules/cpu/default.nix
index a61a597b2093..ee16765c1bcf 100644
--- a/pkgs/development/ocaml-modules/cpu/default.nix
+++ b/pkgs/development/ocaml-modules/cpu/default.nix
@@ -20,7 +20,7 @@ buildDunePackage rec {
 
   nativeBuildInputs = [ autoconf ];
 
-  hardeningDisable = lib.optional stdenv.isDarwin "strictoverflow";
+  hardeningDisable = lib.optional stdenv.hostPlatform.isDarwin "strictoverflow";
 
   meta = with lib; {
     inherit (src.meta) homepage;
diff --git a/pkgs/development/ocaml-modules/crowbar/default.nix b/pkgs/development/ocaml-modules/crowbar/default.nix
index d321abfe9daa..24ef96f57331 100644
--- a/pkgs/development/ocaml-modules/crowbar/default.nix
+++ b/pkgs/development/ocaml-modules/crowbar/default.nix
@@ -20,7 +20,7 @@ buildDunePackage rec {
   propagatedBuildInputs = [ ocplib-endian cmdliner afl-persistent ];
   checkInputs = [ calendar fpath pprint uutf uunf uucp ];
   # uunf is broken on aarch64
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
 
   meta = with lib; {
     description = "Property fuzzing for OCaml";
diff --git a/pkgs/development/ocaml-modules/ctypes_stubs_js/default.nix b/pkgs/development/ocaml-modules/ctypes_stubs_js/default.nix
index f0d5e04a4a99..171b08482940 100644
--- a/pkgs/development/ocaml-modules/ctypes_stubs_js/default.nix
+++ b/pkgs/development/ocaml-modules/ctypes_stubs_js/default.nix
@@ -28,7 +28,7 @@ buildDunePackage rec {
     ctypes
     ppx_expect
   ];
-  doCheck = !(stdenv.isLinux && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
 
   meta = {
     description = "Js_of_ocaml Javascript stubs for the OCaml ctypes library";
diff --git a/pkgs/development/ocaml-modules/curly/default.nix b/pkgs/development/ocaml-modules/curly/default.nix
index 5d5cdb360f47..229ad666cb24 100644
--- a/pkgs/development/ocaml-modules/curly/default.nix
+++ b/pkgs/development/ocaml-modules/curly/default.nix
@@ -23,7 +23,7 @@ buildDunePackage rec {
   doCheck = lib.versionAtLeast ocaml.version "4.08"
     # Some test fails in macOS sandbox
     # > Fatal error: exception Unix.Unix_error(Unix.EPERM, "bind", "")
-    && !stdenv.isDarwin;
+    && !stdenv.hostPlatform.isDarwin;
 
   postPatch = ''
     substituteInPlace src/curly.ml \
diff --git a/pkgs/development/ocaml-modules/eigen/default.nix b/pkgs/development/ocaml-modules/eigen/default.nix
index 5c75c4cb1044..0b02539d64cb 100644
--- a/pkgs/development/ocaml-modules/eigen/default.nix
+++ b/pkgs/development/ocaml-modules/eigen/default.nix
@@ -15,7 +15,7 @@ buildDunePackage rec {
 
   minimalOCamlVersion = "4.02";
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
 
   propagatedBuildInputs = [ ctypes ];
 
diff --git a/pkgs/development/ocaml-modules/eio/main.nix b/pkgs/development/ocaml-modules/eio/main.nix
index a65b27b8db41..48c15e99ae0c 100644
--- a/pkgs/development/ocaml-modules/eio/main.nix
+++ b/pkgs/development/ocaml-modules/eio/main.nix
@@ -16,7 +16,7 @@ buildDunePackage {
 
   propagatedBuildInputs = [
     eio_posix
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     eio_linux
   ];
 }
diff --git a/pkgs/development/ocaml-modules/eio/posix.nix b/pkgs/development/ocaml-modules/eio/posix.nix
index c18cdd506141..fa63c1ea713b 100644
--- a/pkgs/development/ocaml-modules/eio/posix.nix
+++ b/pkgs/development/ocaml-modules/eio/posix.nix
@@ -16,7 +16,7 @@ buildDunePackage {
 
   dontStrip = true;
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     NIX_CFLAGS_COMPILE = "-Wno-implicit-function-declaration";
   };
 
diff --git a/pkgs/development/ocaml-modules/elina/default.nix b/pkgs/development/ocaml-modules/elina/default.nix
index de000f8aaf83..de3f1094143d 100644
--- a/pkgs/development/ocaml-modules/elina/default.nix
+++ b/pkgs/development/ocaml-modules/elina/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     "--use-opam"
     "--apron-prefix" apron
   ]
-  ++ lib.optional stdenv.isDarwin "--absolute-dylibs"
+  ++ lib.optional stdenv.hostPlatform.isDarwin "--absolute-dylibs"
   ;
 
   createFindlibDestdir = true;
diff --git a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-av.nix b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-av.nix
index 58055aa6698c..4d8555613177 100644
--- a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-av.nix
+++ b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-av.nix
@@ -14,7 +14,7 @@ buildDunePackage {
   inherit (ffmpeg-base) version src;
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.isDarwin [ AudioToolbox VideoToolbox ];
+  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ AudioToolbox VideoToolbox ];
   propagatedBuildInputs = [ ffmpeg-avutil ffmpeg-avcodec ffmpeg.dev ];
 
   doCheck = true;
diff --git a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avcodec.nix b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avcodec.nix
index 8f268d4d5ec2..85f03825cdbd 100644
--- a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avcodec.nix
+++ b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avcodec.nix
@@ -15,7 +15,7 @@ buildDunePackage {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ dune-configurator ]
-    ++ lib.optionals stdenv.isDarwin [ AudioToolbox VideoToolbox ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AudioToolbox VideoToolbox ];
   propagatedBuildInputs = [ ffmpeg-avutil ffmpeg.dev ];
 
   doCheck = true;
diff --git a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avdevice.nix b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avdevice.nix
index c8a1bf9de5a1..f966706cc737 100644
--- a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avdevice.nix
+++ b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avdevice.nix
@@ -21,7 +21,7 @@ buildDunePackage {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ dune-configurator ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     AudioToolbox
     AVFoundation
diff --git a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avfilter.nix b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avfilter.nix
index 89d982483986..1f9ded9bd024 100644
--- a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avfilter.nix
+++ b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avfilter.nix
@@ -17,7 +17,7 @@ buildDunePackage {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ dune-configurator ]
-    ++ lib.optionals stdenv.isDarwin [ AppKit CoreImage OpenGL VideoToolbox ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit CoreImage OpenGL VideoToolbox ];
   propagatedBuildInputs = [ ffmpeg-avutil ffmpeg.dev ];
 
   doCheck = true;
diff --git a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avutil.nix b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avutil.nix
index 8e299a536f63..8374304fe488 100644
--- a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avutil.nix
+++ b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-avutil.nix
@@ -12,7 +12,7 @@ buildDunePackage {
   inherit (ffmpeg-base) version src;
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.isDarwin [ AudioToolbox VideoToolbox ];
+  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ AudioToolbox VideoToolbox ];
   propagatedBuildInputs = [ ffmpeg.dev ];
 
   doCheck = true;
diff --git a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-swresample.nix b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-swresample.nix
index d21e0d02ad4c..5fda062454f0 100644
--- a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-swresample.nix
+++ b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-swresample.nix
@@ -13,7 +13,7 @@ buildDunePackage {
   inherit (ffmpeg-base) version src;
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.isDarwin [ VideoToolbox ];
+  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ VideoToolbox ];
   propagatedBuildInputs = [ ffmpeg-avutil ffmpeg-avcodec ffmpeg.dev ];
 
   doCheck = true;
diff --git a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-swscale.nix b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-swscale.nix
index b03d87596b03..518f18b1509b 100644
--- a/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-swscale.nix
+++ b/pkgs/development/ocaml-modules/ffmpeg/ffmpeg-swscale.nix
@@ -13,7 +13,7 @@ buildDunePackage {
   inherit (ffmpeg-base) version src;
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.isDarwin [ VideoToolbox ];
+  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ VideoToolbox ];
   propagatedBuildInputs = [ ffmpeg-avutil ffmpeg.dev ];
 
   doCheck = true;
diff --git a/pkgs/development/ocaml-modules/git/default.nix b/pkgs/development/ocaml-modules/git/default.nix
index 980a3efa9bd0..29d7b492c837 100644
--- a/pkgs/development/ocaml-modules/git/default.nix
+++ b/pkgs/development/ocaml-modules/git/default.nix
@@ -31,7 +31,7 @@ buildDunePackage rec {
   checkInputs = [
     alcotest alcotest-lwt mirage-crypto-rng crowbar cmdliner
   ];
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
 
   meta = {
     description = "Git format and protocol in pure OCaml";
diff --git a/pkgs/development/ocaml-modules/gsl/default.nix b/pkgs/development/ocaml-modules/gsl/default.nix
index 27791d6aa5f3..fc81d53f1717 100644
--- a/pkgs/development/ocaml-modules/gsl/default.nix
+++ b/pkgs/development/ocaml-modules/gsl/default.nix
@@ -15,7 +15,7 @@ buildDunePackage rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ dune-configurator gsl ];
-  propagatedBuildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Accelerate ];
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Accelerate ];
 
   meta = with lib; {
     homepage = "https://mmottl.github.io/gsl-ocaml/";
diff --git a/pkgs/development/ocaml-modules/gstreamer/default.nix b/pkgs/development/ocaml-modules/gstreamer/default.nix
index 34407299914a..689603c8e19c 100644
--- a/pkgs/development/ocaml-modules/gstreamer/default.nix
+++ b/pkgs/development/ocaml-modules/gstreamer/default.nix
@@ -12,7 +12,7 @@ buildDunePackage rec {
   };
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.isDarwin [ AppKit Foundation ];
+  buildInputs = [ dune-configurator ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit Foundation ];
   propagatedBuildInputs = [ glib.dev gst_all_1.gstreamer.dev gst_all_1.gst-plugins-base ];
 
   CFLAGS_COMPILE = [
diff --git a/pkgs/development/ocaml-modules/labltk/default.nix b/pkgs/development/ocaml-modules/labltk/default.nix
index 1fb45ebdd8df..780213ad0792 100644
--- a/pkgs/development/ocaml-modules/labltk/default.nix
+++ b/pkgs/development/ocaml-modules/labltk/default.nix
@@ -66,7 +66,7 @@ stdenv.mkDerivation rec {
   strictDeps = true;
 
   nativeBuildInputs = [ ocaml findlib makeWrapper ];
-  buildInputs = [ tcl tk ] ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+  buildInputs = [ tcl tk ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   configureFlags = [ "--use-findlib" "--installbindir" "$(out)/bin" ];
   dontAddPrefix = true;
diff --git a/pkgs/development/ocaml-modules/lacaml/default.nix b/pkgs/development/ocaml-modules/lacaml/default.nix
index e8d0e966c40f..e747b64de6e2 100644
--- a/pkgs/development/ocaml-modules/lacaml/default.nix
+++ b/pkgs/development/ocaml-modules/lacaml/default.nix
@@ -19,7 +19,7 @@ buildDunePackage rec {
 
   buildInputs = [ dune-configurator ];
   propagatedBuildInputs = [ lapack blas ] ++
-    lib.optionals stdenv.isDarwin
+    lib.optionals stdenv.hostPlatform.isDarwin
       [ darwin.apple_sdk.frameworks.Accelerate ];
 
   meta = with lib; {
diff --git a/pkgs/development/ocaml-modules/ocaml-libvirt/default.nix b/pkgs/development/ocaml-modules/ocaml-libvirt/default.nix
index 67741516af19..e27fbca0a4a0 100644
--- a/pkgs/development/ocaml-modules/ocaml-libvirt/default.nix
+++ b/pkgs/development/ocaml-modules/ocaml-libvirt/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook pkg-config findlib perl ocaml ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Foundation
     AppKit
   ];
diff --git a/pkgs/development/ocaml-modules/sodium/default.nix b/pkgs/development/ocaml-modules/sodium/default.nix
index 87fb82adcbeb..a3777f7d8aec 100644
--- a/pkgs/development/ocaml-modules/sodium/default.nix
+++ b/pkgs/development/ocaml-modules/sodium/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   createFindlibDestdir = true;
 
-  hardeningDisable = lib.optional stdenv.isDarwin "strictoverflow";
+  hardeningDisable = lib.optional stdenv.hostPlatform.isDarwin "strictoverflow";
 
   meta = with lib; {
     homepage = "https://github.com/dsheets/ocaml-sodium";
diff --git a/pkgs/development/ocaml-modules/torch/default.nix b/pkgs/development/ocaml-modules/torch/default.nix
index f24a4fe96819..83446cdf0e17 100644
--- a/pkgs/development/ocaml-modules/torch/default.nix
+++ b/pkgs/development/ocaml-modules/torch/default.nix
@@ -57,7 +57,7 @@ buildDunePackage rec {
 
   preBuild = "export LIBTORCH=${torch.dev}/";
 
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
 
   meta = with lib; {
     inherit (src.meta) homepage;
diff --git a/pkgs/development/ocaml-modules/tsdl/default.nix b/pkgs/development/ocaml-modules/tsdl/default.nix
index 2d35f76d5bf0..1395a37c69d3 100644
--- a/pkgs/development/ocaml-modules/tsdl/default.nix
+++ b/pkgs/development/ocaml-modules/tsdl/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation {
   nativeBuildInputs = [ pkg-config ocaml findlib ocamlbuild topkg ];
   buildInputs = [ topkg ];
   propagatedBuildInputs = [ SDL2 ctypes ctypes-foreign ]
-    ++ lib.optionals stdenv.isDarwin [ AudioToolbox Cocoa CoreAudio CoreVideo ForceFeedback ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AudioToolbox Cocoa CoreAudio CoreVideo ForceFeedback ];
 
   preConfigure = ''
     # The following is done to avoid an additional dependency (ncurses)
diff --git a/pkgs/development/ocaml-modules/uunf/default.nix b/pkgs/development/ocaml-modules/uunf/default.nix
index 2d473a4b8351..e001fa03a2dd 100644
--- a/pkgs/development/ocaml-modules/uunf/default.nix
+++ b/pkgs/development/ocaml-modules/uunf/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation {
 
   strictDeps = true;
 
-  prePatch = lib.optionalString stdenv.isAarch64 "ulimit -s 16384";
+  prePatch = lib.optionalString stdenv.hostPlatform.isAarch64 "ulimit -s 16384";
 
   buildPhase = ''
     runHook preBuild
diff --git a/pkgs/development/ocaml-modules/zelus/default.nix b/pkgs/development/ocaml-modules/zelus/default.nix
index 07d268d45de9..4d52640d53bc 100644
--- a/pkgs/development/ocaml-modules/zelus/default.nix
+++ b/pkgs/development/ocaml-modules/zelus/default.nix
@@ -20,7 +20,7 @@ buildDunePackage rec {
   };
 
   # ./configure: cannot execute: required file not found
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchShebangs configure
   '';
 
diff --git a/pkgs/development/octave-modules/gsl/default.nix b/pkgs/development/octave-modules/gsl/default.nix
index e050f381a914..2ce92f43d618 100644
--- a/pkgs/development/octave-modules/gsl/default.nix
+++ b/pkgs/development/octave-modules/gsl/default.nix
@@ -25,6 +25,6 @@ buildOctavePackage rec {
     description = "Octave bindings to the GNU Scientific Library";
     # error: use of undeclared identifier 'feval'; did you mean 'octave::feval'?
     # error: no member named 'is_real_type' in 'octave_value'
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/octave-modules/ocl/default.nix b/pkgs/development/octave-modules/ocl/default.nix
index eb20f7dc7c77..72242d165543 100644
--- a/pkgs/development/octave-modules/ocl/default.nix
+++ b/pkgs/development/octave-modules/ocl/default.nix
@@ -24,6 +24,6 @@ buildOctavePackage rec {
        using available OpenCL hardware and drivers.
     '';
     # error: structure has no member 'dir'
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/octave-modules/strings/default.nix b/pkgs/development/octave-modules/strings/default.nix
index 35887d249576..fbf7aec786af 100644
--- a/pkgs/development/octave-modules/strings/default.nix
+++ b/pkgs/development/octave-modules/strings/default.nix
@@ -40,6 +40,6 @@ buildOctavePackage rec {
     maintainers = with maintainers; [ KarlJoad ];
     description = "Additional functions for manipulation and analysis of strings";
     # Some pcre symbols claimed to be missing
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/perl-modules/ImageExifTool/default.nix b/pkgs/development/perl-modules/ImageExifTool/default.nix
index 08d207e3bbac..46efb33f23ca 100644
--- a/pkgs/development/perl-modules/ImageExifTool/default.nix
+++ b/pkgs/development/perl-modules/ImageExifTool/default.nix
@@ -18,9 +18,9 @@ buildPerlPackage rec {
     hash = "sha256-sfSnx5bS7vI0KIhBOpB5VYzP6g8oi0rR7mUTxxNWEA0=";
   };
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/exiftool
   '';
 
diff --git a/pkgs/development/perl-modules/WWW-YoutubeViewer/default.nix b/pkgs/development/perl-modules/WWW-YoutubeViewer/default.nix
index cba9ef986362..0669f5b7c7af 100644
--- a/pkgs/development/perl-modules/WWW-YoutubeViewer/default.nix
+++ b/pkgs/development/perl-modules/WWW-YoutubeViewer/default.nix
@@ -22,14 +22,14 @@ buildPerlPackage rec {
     sha256 = "9Z4fv2B0AnwtYsp7h9phnRMmHtBOMObIJvK8DmKQRxs=";
   };
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
   propagatedBuildInputs = [
     LWP
     LWPProtocolHttps
     DataDump
     JSON
   ];
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/youtube-viewer
   '';
 
diff --git a/pkgs/development/perl-modules/strip-nondeterminism/default.nix b/pkgs/development/perl-modules/strip-nondeterminism/default.nix
index e50d61b87898..fe6328ea3946 100644
--- a/pkgs/development/perl-modules/strip-nondeterminism/default.nix
+++ b/pkgs/development/perl-modules/strip-nondeterminism/default.nix
@@ -24,7 +24,7 @@ buildPerlPackage rec {
   };
 
   strictDeps = true;
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [ shortenPerlShebang ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ shortenPerlShebang ];
   buildInputs = [
     ArchiveZip
     ArchiveCpio
@@ -45,7 +45,7 @@ buildPerlPackage rec {
     # we don’t need the debhelper script
     rm $out/bin/dh_strip_nondeterminism
     rm $out/share/man/man1/dh_strip_nondeterminism.1
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/strip-nondeterminism
   '';
 
@@ -56,7 +56,7 @@ buildPerlPackage rec {
   '';
 
   # running shortenPerlShebang in postBuild results in non-functioning binary 'exec format error'
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   doInstallCheck = true;
 
   meta = with lib; {
diff --git a/pkgs/development/php-packages/datadog_trace/default.nix b/pkgs/development/php-packages/datadog_trace/default.nix
index 15b16582435d..3cc5732adca7 100644
--- a/pkgs/development/php-packages/datadog_trace/default.nix
+++ b/pkgs/development/php-packages/datadog_trace/default.nix
@@ -38,11 +38,11 @@ buildPecl rec {
       cargo
       rustc
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       rustPlatform.bindgenHook
       rustPlatform.cargoSetupHook
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk_11_0.rustPlatform.bindgenHook
       darwin.apple_sdk_11_0.rustPlatform.cargoSetupHook
     ];
@@ -52,7 +52,7 @@ buildPecl rec {
       curl
       pcre2
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreFoundation
       darwin.apple_sdk.frameworks.Security
       libiconv
diff --git a/pkgs/development/php-packages/mongodb/default.nix b/pkgs/development/php-packages/mongodb/default.nix
index 03487e15dbb3..cde9fec66d51 100644
--- a/pkgs/development/php-packages/mongodb/default.nix
+++ b/pkgs/development/php-packages/mongodb/default.nix
@@ -36,7 +36,7 @@ buildPecl rec {
       zlib
       pcre2
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk_11_0.frameworks.Security
       darwin.apple_sdk_11_0.Libsystem
       libiconv
diff --git a/pkgs/development/php-packages/openswoole/default.nix b/pkgs/development/php-packages/openswoole/default.nix
index 83c59fb3212c..b250db4a3003 100644
--- a/pkgs/development/php-packages/openswoole/default.nix
+++ b/pkgs/development/php-packages/openswoole/default.nix
@@ -21,7 +21,7 @@ buildPecl {
     hash = "sha256-Z26E1PdKypB/MImCHFgA3rJW5LvVaLZsQUxRv0RcFuo=";
   };
 
-  buildInputs = [ pcre2 ] ++ lib.optionals (!stdenv.isDarwin) [ valgrind ];
+  buildInputs = [ pcre2 ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ valgrind ];
 
   meta = with lib; {
     changelog = "https://github.com/openswoole/swoole-src/releases/tag/v${version}";
diff --git a/pkgs/development/php-packages/pdo_sqlsrv/default.nix b/pkgs/development/php-packages/pdo_sqlsrv/default.nix
index 7da343ac5564..1b61f74d4094 100644
--- a/pkgs/development/php-packages/pdo_sqlsrv/default.nix
+++ b/pkgs/development/php-packages/pdo_sqlsrv/default.nix
@@ -15,7 +15,7 @@ buildPecl {
 
   internalDeps = [ php.extensions.pdo ];
 
-  buildInputs = [ unixODBC ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = [ unixODBC ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   meta = with lib; {
     description = "Microsoft Drivers for PHP for SQL Server";
diff --git a/pkgs/development/php-packages/relay/default.nix b/pkgs/development/php-packages/relay/default.nix
index 56d826cb4b94..4a3f21a08a90 100644
--- a/pkgs/development/php-packages/relay/default.nix
+++ b/pkgs/development/php-packages/relay/default.nix
@@ -77,8 +77,8 @@ stdenv.mkDerivation (finalAttrs: {
     system = stdenv.hostPlatform.system;
     phpMajor = lib.versions.majorMinor php.version;
   };
-  nativeBuildInputs = lib.optionals (!stdenv.isDarwin) [ autoPatchelfHook ];
-  buildInputs = lib.optionals (!stdenv.isDarwin) [
+  nativeBuildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ autoPatchelfHook ];
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [
     openssl
     zstd
     lz4
@@ -92,7 +92,7 @@ stdenv.mkDerivation (finalAttrs: {
       chmod +w $out/lib/php/extensions/relay.so
     ''
     + (
-      if stdenv.isDarwin then
+      if stdenv.hostPlatform.isDarwin then
         let
           args =
             lib.strings.concatMapStrings
diff --git a/pkgs/development/php-packages/snuffleupagus/default.nix b/pkgs/development/php-packages/snuffleupagus/default.nix
index d9c201e67a2d..8a2e5a45f7f1 100644
--- a/pkgs/development/php-packages/snuffleupagus/default.nix
+++ b/pkgs/development/php-packages/snuffleupagus/default.nix
@@ -22,7 +22,7 @@ buildPecl rec {
 
   buildInputs =
     [ pcre2 ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk_11_0.frameworks.CoreFoundation
       darwin.apple_sdk_11_0.Libsystem
       libiconv
diff --git a/pkgs/development/php-packages/sqlsrv/default.nix b/pkgs/development/php-packages/sqlsrv/default.nix
index 303f2327d1e5..08c59275c848 100644
--- a/pkgs/development/php-packages/sqlsrv/default.nix
+++ b/pkgs/development/php-packages/sqlsrv/default.nix
@@ -12,7 +12,7 @@ buildPecl {
   version = "5.10.1";
   sha256 = "sha256-XNrttNiihjQ+azuZmS2fy0So+2ndAqpde8IOsupeWdI=";
 
-  buildInputs = [ unixODBC ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = [ unixODBC ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   meta = with lib; {
     description = "Microsoft Drivers for PHP for SQL Server";
diff --git a/pkgs/development/php-packages/swoole/default.nix b/pkgs/development/php-packages/swoole/default.nix
index f519522a8357..6cc399be10dc 100644
--- a/pkgs/development/php-packages/swoole/default.nix
+++ b/pkgs/development/php-packages/swoole/default.nix
@@ -22,7 +22,7 @@ buildPecl {
     hash = "sha256-WTsntvauiooj081mOoFcK6CVpnCCR/cEQtJbsOIJ/wo=";
   };
 
-  buildInputs = [ pcre2 ] ++ lib.optionals (!stdenv.isDarwin) [ valgrind ];
+  buildInputs = [ pcre2 ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ valgrind ];
 
   # tests require internet access
   doCheck = false;
diff --git a/pkgs/development/python-modules/aardwolf/default.nix b/pkgs/development/python-modules/aardwolf/default.nix
index 72d309cd3298..c4807df9a90c 100644
--- a/pkgs/development/python-modules/aardwolf/default.nix
+++ b/pkgs/development/python-modules/aardwolf/default.nix
@@ -66,7 +66,7 @@ buildPythonPackage rec {
     tqdm
     unicrypto
     winsspi
-  ] ++ lib.optionals (stdenv.isDarwin) [ iconv ];
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ iconv ];
 
   # Module doesn't have tests
   doCheck = false;
diff --git a/pkgs/development/python-modules/accelerate/default.nix b/pkgs/development/python-modules/accelerate/default.nix
index 566908cfa3b5..a809c48b7313 100644
--- a/pkgs/development/python-modules/accelerate/default.nix
+++ b/pkgs/development/python-modules/accelerate/default.nix
@@ -96,7 +96,7 @@ buildPythonPackage rec {
       "test_dynamo_extract_model"
       "test_send_to_device_compiles"
     ]
-    ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       # usual aarch64-linux RuntimeError: DataLoader worker (pid(s) <...>) exited unexpectedly
       "CheckpointTest"
       # TypeError: unsupported operand type(s) for /: 'NoneType' and 'int' (it seems cpuinfo doesn't work here)
@@ -106,7 +106,7 @@ buildPythonPackage rec {
       # requires ptxas from cudatoolkit, which is unfree
       "test_dynamo_extract_model"
     ]
-    ++ lib.optionals (stdenv.isDarwin) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
       # RuntimeError: 'accelerate-launch /nix/store/a7vhm7b74a7bmxc35j26s9iy1zfaqjs...
       "test_accelerate_test"
       "test_init_trackers"
@@ -114,12 +114,12 @@ buildPythonPackage rec {
       "test_log"
       "test_log_with_tensor"
     ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
       # RuntimeError: torch_shm_manager: execl failed: Permission denied
       "CheckpointTest"
     ];
 
-  disabledTestPaths = lib.optionals (!(stdenv.isLinux && stdenv.isx86_64)) [
+  disabledTestPaths = lib.optionals (!(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64)) [
     # numerous instances of torch.multiprocessing.spawn.ProcessRaisedException:
     "tests/test_cpu.py"
     "tests/test_grad_sync.py"
diff --git a/pkgs/development/python-modules/accupy/default.nix b/pkgs/development/python-modules/accupy/default.nix
index f8f9897a6b3a..35d39fed9a6f 100644
--- a/pkgs/development/python-modules/accupy/default.nix
+++ b/pkgs/development/python-modules/accupy/default.nix
@@ -62,7 +62,7 @@ buildPythonPackage rec {
 
   # This variable is needed to suppress the "Trace/BPT trap: 5" error in Darwin's checkPhase.
   # Not sure of the details, but we can avoid it by changing the matplotlib backend during testing.
-  env.MPLBACKEND = lib.optionalString stdenv.isDarwin "Agg";
+  env.MPLBACKEND = lib.optionalString stdenv.hostPlatform.isDarwin "Agg";
 
   # performance tests aren't useful to us and disabling them allows us to
   # decouple ourselves from an unnecessary build dep
diff --git a/pkgs/development/python-modules/adblock/default.nix b/pkgs/development/python-modules/adblock/default.nix
index 7faeab491f62..67170159f348 100644
--- a/pkgs/development/python-modules/adblock/default.nix
+++ b/pkgs/development/python-modules/adblock/default.nix
@@ -60,7 +60,7 @@ buildPythonPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       CoreFoundation
       Security
diff --git a/pkgs/development/python-modules/aesara/default.nix b/pkgs/development/python-modules/aesara/default.nix
index a7e5ee143667..385ec7ed5259 100644
--- a/pkgs/development/python-modules/aesara/default.nix
+++ b/pkgs/development/python-modules/aesara/default.nix
@@ -108,6 +108,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/aesara-devs/aesara/releases/tag/rel-${version}";
     license = licenses.bsd3;
     maintainers = with maintainers; [ Etjean ];
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   };
 }
diff --git a/pkgs/development/python-modules/aiofiles/default.nix b/pkgs/development/python-modules/aiofiles/default.nix
index dd9e903a4369..a80581bc3088 100644
--- a/pkgs/development/python-modules/aiofiles/default.nix
+++ b/pkgs/development/python-modules/aiofiles/default.nix
@@ -30,7 +30,7 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     "test_sendfile_file"
 
     # require loopback networking:
diff --git a/pkgs/development/python-modules/aioftp/default.nix b/pkgs/development/python-modules/aioftp/default.nix
index bd448f41c849..ee0429bacb46 100644
--- a/pkgs/development/python-modules/aioftp/default.nix
+++ b/pkgs/development/python-modules/aioftp/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
     trustme
   ] ++ lib.flatten (builtins.attrValues passthru.optional-dependencies);
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # uses 127.0.0.2, which macos doesn't like
     "test_pasv_connection_pasv_forced_response_address"
   ];
diff --git a/pkgs/development/python-modules/aiohttp/default.nix b/pkgs/development/python-modules/aiohttp/default.nix
index 75db6b645291..576ea16a39f8 100644
--- a/pkgs/development/python-modules/aiohttp/default.nix
+++ b/pkgs/development/python-modules/aiohttp/default.nix
@@ -113,8 +113,8 @@ buildPythonPackage rec {
       # don't run benchmarks
       "test_import_time"
     ]
-    ++ lib.optionals stdenv.is32bit [ "test_cookiejar" ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.is32bit [ "test_cookiejar" ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_addresses" # https://github.com/aio-libs/aiohttp/issues/3572, remove >= v4.0.0
       "test_close"
     ];
@@ -129,7 +129,7 @@ buildPythonPackage rec {
 
       export HOME=$(mktemp -d)
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # Work around "OSError: AF_UNIX path too long"
       export TMPDIR="/tmp"
     '';
diff --git a/pkgs/development/python-modules/aiomisc/default.nix b/pkgs/development/python-modules/aiomisc/default.nix
index 8f3050f3ed48..59412173e977 100644
--- a/pkgs/development/python-modules/aiomisc/default.nix
+++ b/pkgs/development/python-modules/aiomisc/default.nix
@@ -37,7 +37,7 @@ buildPythonPackage rec {
   dependencies =
     [ colorlog ]
     ++ lib.optionals (pythonOlder "3.11") [ typing-extensions ]
-    ++ lib.optionals stdenv.isLinux [ logging-journald ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ logging-journald ];
 
   nativeCheckInputs = [
     aiocontextvars
diff --git a/pkgs/development/python-modules/aiosonic/default.nix b/pkgs/development/python-modules/aiosonic/default.nix
index e4dd72e700cd..b5f4e5406b8b 100644
--- a/pkgs/development/python-modules/aiosonic/default.nix
+++ b/pkgs/development/python-modules/aiosonic/default.nix
@@ -90,7 +90,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "aiosonic" ];
 
   disabledTests =
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       # need network
       "test_simple_get"
       "test_get_python"
@@ -132,7 +132,7 @@ buildPythonPackage rec {
       "test_get_with_cookies"
       "test_proxy_request"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # "FAILED tests/test_proxy.py::test_proxy_request - Exception: port 8865 never got active"
       "test_proxy_request"
     ];
diff --git a/pkgs/development/python-modules/ale-py/default.nix b/pkgs/development/python-modules/ale-py/default.nix
index 15836dee89ba..031813101079 100644
--- a/pkgs/development/python-modules/ale-py/default.nix
+++ b/pkgs/development/python-modules/ale-py/default.nix
@@ -87,6 +87,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/Farama-Foundation/Arcade-Learning-Environment/releases/tag/v${version}";
     license = lib.licenses.gpl2;
     maintainers = with lib.maintainers; [ billhuang ];
-    broken = stdenv.isDarwin; # fails to link with missing library
+    broken = stdenv.hostPlatform.isDarwin; # fails to link with missing library
   };
 }
diff --git a/pkgs/development/python-modules/angr/default.nix b/pkgs/development/python-modules/angr/default.nix
index f9039ea24a8e..b1b14da3b607 100644
--- a/pkgs/development/python-modules/angr/default.nix
+++ b/pkgs/development/python-modules/angr/default.nix
@@ -88,7 +88,7 @@ buildPythonPackage rec {
     AngrDB = [ sqlalchemy ];
   };
 
-  setupPyBuildFlags = lib.optionals stdenv.isLinux [
+  setupPyBuildFlags = lib.optionals stdenv.hostPlatform.isLinux [
     "--plat-name"
     "linux"
   ];
diff --git a/pkgs/development/python-modules/ansible-runner/default.nix b/pkgs/development/python-modules/ansible-runner/default.nix
index 0e1a3b8ca7a2..11d0f37773e4 100644
--- a/pkgs/development/python-modules/ansible-runner/default.nix
+++ b/pkgs/development/python-modules/ansible-runner/default.nix
@@ -89,7 +89,7 @@ buildPythonPackage rec {
       "test/integration/test_runner.py"
       "test/unit/test_runner.py"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Integration tests on Darwin are not regularly passing in ansible-runner's own CI
       "test/integration"
       # These tests write to `/tmp` which is not writable on Darwin
diff --git a/pkgs/development/python-modules/anyio/default.nix b/pkgs/development/python-modules/anyio/default.nix
index 296fbcdc3563..23f249bfcad2 100644
--- a/pkgs/development/python-modules/anyio/default.nix
+++ b/pkgs/development/python-modules/anyio/default.nix
@@ -78,7 +78,7 @@ buildPythonPackage rec {
     "'not network'"
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # PermissionError: [Errno 1] Operation not permitted: '/dev/console'
     "test_is_block_device"
   ];
diff --git a/pkgs/development/python-modules/apscheduler/default.nix b/pkgs/development/python-modules/apscheduler/default.nix
index d409a535b463..7005690b53ef 100644
--- a/pkgs/development/python-modules/apscheduler/default.nix
+++ b/pkgs/development/python-modules/apscheduler/default.nix
@@ -64,7 +64,7 @@ buildPythonPackage rec {
       "test_add_pending_job"
       "test_shutdown"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_submit_job"
       "test_max_instances"
     ];
diff --git a/pkgs/development/python-modules/apsw/default.nix b/pkgs/development/python-modules/apsw/default.nix
index aec388af308a..d2effb1ae435 100644
--- a/pkgs/development/python-modules/apsw/default.nix
+++ b/pkgs/development/python-modules/apsw/default.nix
@@ -39,7 +39,7 @@ buildPythonPackage rec {
     "testVFSWithWAL"
     # no lines in errout.txt
     "testWriteUnraisable"
-  ] ++ lib.optionals stdenv.isDarwin [ "testzzForkChecker" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "testzzForkChecker" ];
 
   pythonImportsCheck = [ "apsw" ];
 
diff --git a/pkgs/development/python-modules/ase/default.nix b/pkgs/development/python-modules/ase/default.nix
index 326d51f55a64..dbdcbce06753 100644
--- a/pkgs/development/python-modules/ase/default.nix
+++ b/pkgs/development/python-modules/ase/default.nix
@@ -39,7 +39,7 @@ buildPythonPackage rec {
     flask
     pillow
     psycopg2
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     tkinter
   ];
 
diff --git a/pkgs/development/python-modules/asgiref/default.nix b/pkgs/development/python-modules/asgiref/default.nix
index fecc4b98f490..1fdb7f50ae31 100644
--- a/pkgs/development/python-modules/asgiref/default.nix
+++ b/pkgs/development/python-modules/asgiref/default.nix
@@ -30,7 +30,7 @@ buildPythonPackage rec {
     pytest-asyncio
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [ "test_multiprocessing" ];
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [ "test_multiprocessing" ];
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/development/python-modules/aspy-refactor-imports/default.nix b/pkgs/development/python-modules/aspy-refactor-imports/default.nix
index bcfb80b32e81..dbc97cca6efb 100644
--- a/pkgs/development/python-modules/aspy-refactor-imports/default.nix
+++ b/pkgs/development/python-modules/aspy-refactor-imports/default.nix
@@ -25,7 +25,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [ pytestCheckHook ];
 
   # fails on darwin due to case-insensitive file system
-  disabledTests = lib.optionals stdenv.isDarwin [ "test_application_directory_case" ];
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [ "test_application_directory_case" ];
 
   meta = with lib; {
     description = "Utilities for refactoring imports in python-like syntax";
diff --git a/pkgs/development/python-modules/astropy/default.nix b/pkgs/development/python-modules/astropy/default.nix
index c88029cb09a8..c6a7f9fea08b 100644
--- a/pkgs/development/python-modules/astropy/default.nix
+++ b/pkgs/development/python-modules/astropy/default.nix
@@ -99,7 +99,7 @@ buildPythonPackage rec {
     "test_datetime_to_timedelta"
 
     "test_datetime_difference_agrees_with_timedelta_no_hypothesis"
-  ] ++ lib.optionals stdenv.isDarwin [ "test_sidereal_lat_independent" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_sidereal_lat_independent" ];
 
   meta = {
     description = "Astronomy/Astrophysics library for Python";
diff --git a/pkgs/development/python-modules/async-upnp-client/default.nix b/pkgs/development/python-modules/async-upnp-client/default.nix
index 18969f48233d..d1719497d7ba 100644
--- a/pkgs/development/python-modules/async-upnp-client/default.nix
+++ b/pkgs/development/python-modules/async-upnp-client/default.nix
@@ -57,7 +57,7 @@ buildPythonPackage rec {
     # socket.gaierror: [Errno -2] Name or service not known
     "test_async_get_local_ip"
     "test_get_local_ip"
-  ] ++ lib.optionals stdenv.isDarwin [ "test_deferred_callback_url" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_deferred_callback_url" ];
 
   disabledTestPaths = [
     # Tries to bind to multicast socket and fails to find proper interface
diff --git a/pkgs/development/python-modules/asyncio-dgram/default.nix b/pkgs/development/python-modules/asyncio-dgram/default.nix
index cdd6ac9b9781..5608a8632e47 100644
--- a/pkgs/development/python-modules/asyncio-dgram/default.nix
+++ b/pkgs/development/python-modules/asyncio-dgram/default.nix
@@ -31,7 +31,7 @@ buildPythonPackage rec {
   ];
 
   # OSError: AF_UNIX path too long
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   disabledTests = [
     "test_protocol_pause_resume"
diff --git a/pkgs/development/python-modules/asyncua/default.nix b/pkgs/development/python-modules/asyncua/default.nix
index d095b203d72f..59c42fd02838 100644
--- a/pkgs/development/python-modules/asyncua/default.nix
+++ b/pkgs/development/python-modules/asyncua/default.nix
@@ -64,7 +64,7 @@ buildPythonPackage rec {
   disabledTests = [
     # Failed: DID NOT RAISE <class 'asyncio.exceptions.TimeoutError'>
     "test_publish"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # OSError: [Errno 48] error while attempting to bind on address ('127.0.0.1',...
     "test_anonymous_rejection"
     "test_certificate_handling_success"
diff --git a/pkgs/development/python-modules/aubio/default.nix b/pkgs/development/python-modules/aubio/default.nix
index 88d2d9af3434..64b89bb1897f 100644
--- a/pkgs/development/python-modules/aubio/default.nix
+++ b/pkgs/development/python-modules/aubio/default.nix
@@ -31,7 +31,7 @@ buildPythonPackage rec {
     })
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks;
     [
       Accelerate
diff --git a/pkgs/development/python-modules/audiotools/default.nix b/pkgs/development/python-modules/audiotools/default.nix
index a6b485d7b2c9..b714062be313 100644
--- a/pkgs/development/python-modules/audiotools/default.nix
+++ b/pkgs/development/python-modules/audiotools/default.nix
@@ -16,7 +16,7 @@ buildPythonPackage rec {
 
   build-system = [ setuptools ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     AudioToolbox
     AudioUnit
     CoreServices
diff --git a/pkgs/development/python-modules/av/default.nix b/pkgs/development/python-modules/av/default.nix
index a030344e8f4c..e3da4e6427cc 100644
--- a/pkgs/development/python-modules/av/default.nix
+++ b/pkgs/development/python-modules/av/default.nix
@@ -63,7 +63,7 @@ buildPythonPackage rec {
   ];
 
   # `__darwinAllowLocalNetworking` doesn’t work for these; not sure why.
-  disabledTestPaths = lib.optionals stdenv.isDarwin [
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     "tests/test_timeout.py"
   ];
 
diff --git a/pkgs/development/python-modules/awkward/default.nix b/pkgs/development/python-modules/awkward/default.nix
index ffadf4d180ca..aefec7c8f326 100644
--- a/pkgs/development/python-modules/awkward/default.nix
+++ b/pkgs/development/python-modules/awkward/default.nix
@@ -72,7 +72,7 @@ buildPythonPackage rec {
       pytest-xdist
       pytestCheckHook
     ]
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       # no support for darwin
       jax
       jaxlib
@@ -82,7 +82,7 @@ buildPythonPackage rec {
   disabledTestPaths = [
     "tests-cuda"
     # Disable tests dependending on jax on darwin
-  ] ++ lib.optionals stdenv.isDarwin [ "tests/test_2603_custom_behaviors_with_jax.py" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "tests/test_2603_custom_behaviors_with_jax.py" ];
 
   disabledTests = [
     # AssertionError: Regex pattern did not match.
diff --git a/pkgs/development/python-modules/awscrt/default.nix b/pkgs/development/python-modules/awscrt/default.nix
index f856473c7b7d..08c902f13832 100644
--- a/pkgs/development/python-modules/awscrt/default.nix
+++ b/pkgs/development/python-modules/awscrt/default.nix
@@ -22,12 +22,12 @@ buildPythonPackage rec {
     hash = "sha256-fsKmevMPvzhklN8Au9+Zb3AkAA32sBqxYAFK/vK5EAU=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
     Security
   ];
 
-  nativeBuildInputs = [ cmake ] ++ lib.optionals (!stdenv.isDarwin) [ perl ];
+  nativeBuildInputs = [ cmake ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ perl ];
 
   dontUseCmakeConfigure = true;
 
diff --git a/pkgs/development/python-modules/awslambdaric/default.nix b/pkgs/development/python-modules/awslambdaric/default.nix
index f208c5048767..8b091fc6dfe7 100644
--- a/pkgs/development/python-modules/awslambdaric/default.nix
+++ b/pkgs/development/python-modules/awslambdaric/default.nix
@@ -55,7 +55,7 @@ buildPythonPackage rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
     description = "AWS Lambda Runtime Interface Client for Python";
     homepage = "https://github.com/aws/aws-lambda-python-runtime-interface-client";
     license = licenses.asl20;
diff --git a/pkgs/development/python-modules/azure-core/default.nix b/pkgs/development/python-modules/azure-core/default.nix
index 67178fac58aa..a9cdf1ac4e99 100644
--- a/pkgs/development/python-modules/azure-core/default.nix
+++ b/pkgs/development/python-modules/azure-core/default.nix
@@ -75,7 +75,7 @@ buildPythonPackage rec {
     # disable 8 tests failing on some darwin machines with errors:
     # azure.core.polling.base_polling.BadStatus: Invalid return status 403 for 'GET' operation
     # azure.core.exceptions.HttpResponseError: Operation returned an invalid status 'Forbidden'
-  ] ++ lib.optionals stdenv.isDarwin [ "location_polling_fail" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "location_polling_fail" ];
 
   disabledTestPaths = [
     # requires testing modules which aren't published, and likely to create cyclic dependencies
diff --git a/pkgs/development/python-modules/b2sdk/default.nix b/pkgs/development/python-modules/b2sdk/default.nix
index 3bcca268dab3..7b56d75ddd03 100644
--- a/pkgs/development/python-modules/b2sdk/default.nix
+++ b/pkgs/development/python-modules/b2sdk/default.nix
@@ -54,7 +54,7 @@ buildPythonPackage rec {
     pytest-mock
     pytestCheckHook
     tqdm
-  ] ++ lib.optionals stdenv.isLinux [ glibcLocales ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ glibcLocales ];
 
   disabledTestPaths = [
     # requires aws s3 auth
diff --git a/pkgs/development/python-modules/base2048/default.nix b/pkgs/development/python-modules/base2048/default.nix
index e092fecc1c1c..4a760c5b6f19 100644
--- a/pkgs/development/python-modules/base2048/default.nix
+++ b/pkgs/development/python-modules/base2048/default.nix
@@ -39,7 +39,7 @@ buildPythonPackage rec {
     rustc
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   passthru.optional-dependencies = {
     fuzz = [ frelatage ];
diff --git a/pkgs/development/python-modules/bayesian-optimization/default.nix b/pkgs/development/python-modules/bayesian-optimization/default.nix
index 24b86e8f224b..582a6d507e6d 100644
--- a/pkgs/development/python-modules/bayesian-optimization/default.nix
+++ b/pkgs/development/python-modules/bayesian-optimization/default.nix
@@ -50,7 +50,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "bayes_opt" ];
 
   meta = with lib; {
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
     description = ''
       A Python implementation of global optimization with gaussian processes
     '';
diff --git a/pkgs/development/python-modules/bcrypt/default.nix b/pkgs/development/python-modules/bcrypt/default.nix
index 396a9668b777..ee51533e6e3a 100644
--- a/pkgs/development/python-modules/bcrypt/default.nix
+++ b/pkgs/development/python-modules/bcrypt/default.nix
@@ -48,7 +48,7 @@ buildPythonPackage rec {
   ];
 
   # Remove when https://github.com/NixOS/nixpkgs/pull/190093 lands.
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   nativeCheckInputs = [ pytestCheckHook ];
 
diff --git a/pkgs/development/python-modules/behave/default.nix b/pkgs/development/python-modules/behave/default.nix
index e7a9de7f1bc0..60ba28069ab0 100644
--- a/pkgs/development/python-modules/behave/default.nix
+++ b/pkgs/development/python-modules/behave/default.nix
@@ -60,7 +60,7 @@ buildPythonPackage rec {
 
   # timing-based test flaky on Darwin
   # https://github.com/NixOS/nixpkgs/pull/97737#issuecomment-691489824
-  disabledTests = lib.optionals stdenv.isDarwin [ "test_step_decorator_async_run_until_complete" ];
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [ "test_step_decorator_async_run_until_complete" ];
 
   postCheck = ''
     ${python.interpreter} bin/behave -f progress3 --stop --tags='~@xfail' features/
diff --git a/pkgs/development/python-modules/binwalk/default.nix b/pkgs/development/python-modules/binwalk/default.nix
index 25365c67fbde..024bd4d2dea3 100644
--- a/pkgs/development/python-modules/binwalk/default.nix
+++ b/pkgs/development/python-modules/binwalk/default.nix
@@ -55,7 +55,7 @@ buildPythonPackage rec {
       pyqtgraph
       pyqt5
     ]
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       cramfsprogs
       cramfsswap
       sasquatch
diff --git a/pkgs/development/python-modules/black/default.nix b/pkgs/development/python-modules/black/default.nix
index 06b53f599e30..de9a6d9d48b6 100644
--- a/pkgs/development/python-modules/black/default.nix
+++ b/pkgs/development/python-modules/black/default.nix
@@ -86,7 +86,7 @@ buildPythonPackage rec {
       # Make /build the project root for black tests to avoid excluding files.
       touch ../.git
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # Work around https://github.com/psf/black/issues/2105
       export TMPDIR="/tmp"
     '';
@@ -96,7 +96,7 @@ buildPythonPackage rec {
       # requires network access
       "test_gen_check_output"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # fails on darwin
       "test_expression_diff"
       # Fail on Hydra, see https://github.com/NixOS/nixpkgs/pull/130785
@@ -104,7 +104,7 @@ buildPythonPackage rec {
       "test_skip_magic_trailing_comma"
     ];
   # multiple tests exceed max open files on hydra builders
-  doCheck = !(stdenv.isLinux && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
 
   meta = with lib; {
     description = "Uncompromising Python code formatter";
diff --git a/pkgs/development/python-modules/blackjax/default.nix b/pkgs/development/python-modules/blackjax/default.nix
index 9f7917738665..b58c73367655 100644
--- a/pkgs/development/python-modules/blackjax/default.nix
+++ b/pkgs/development/python-modules/blackjax/default.nix
@@ -54,7 +54,7 @@ buildPythonPackage rec {
 
   disabledTestPaths =
     [ "tests/test_benchmarks.py" ]
-    ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       # Assertion errors on numerical values
       "tests/mcmc/test_integrators.py"
     ];
@@ -64,7 +64,7 @@ buildPythonPackage rec {
       # too slow
       "test_adaptive_tempered_smc"
     ]
-    ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       # Numerical test (AssertionError)
       # https://github.com/blackjax-devs/blackjax/issues/668
       "test_chees_adaptation"
diff --git a/pkgs/development/python-modules/bpycv/default.nix b/pkgs/development/python-modules/bpycv/default.nix
index 97fd086b1f5c..e4ad37696e25 100644
--- a/pkgs/development/python-modules/bpycv/default.nix
+++ b/pkgs/development/python-modules/bpycv/default.nix
@@ -61,7 +61,7 @@ buildPythonPackage rec {
     homepage = "https://github.com/DIYer22/bpycv";
     license = licenses.mit;
     maintainers = [ maintainers.lucasew ];
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
     inherit (blender.meta) platforms;
   };
 }
diff --git a/pkgs/development/python-modules/breezy/default.nix b/pkgs/development/python-modules/breezy/default.nix
index de779d7f3e4c..b6316ad036e7 100644
--- a/pkgs/development/python-modules/breezy/default.nix
+++ b/pkgs/development/python-modules/breezy/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
     setuptools-rust
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   propagatedBuildInputs =
     [
diff --git a/pkgs/development/python-modules/build/default.nix b/pkgs/development/python-modules/build/default.nix
index b3a8c905bc8b..d3329230305e 100644
--- a/pkgs/development/python-modules/build/default.nix
+++ b/pkgs/development/python-modules/build/default.nix
@@ -86,7 +86,7 @@ buildPythonPackage rec {
           "test_output"
           "test_wheel_metadata"
         ]
-        ++ lib.optionals stdenv.isDarwin [
+        ++ lib.optionals stdenv.hostPlatform.isDarwin [
           # Expects Apple's Python and its quirks
           "test_can_get_venv_paths_with_conflicting_default_scheme"
         ];
diff --git a/pkgs/development/python-modules/bx-py-utils/default.nix b/pkgs/development/python-modules/bx-py-utils/default.nix
index ccb98329a3b4..757b2d7e9f21 100644
--- a/pkgs/development/python-modules/bx-py-utils/default.nix
+++ b/pkgs/development/python-modules/bx-py-utils/default.nix
@@ -74,7 +74,7 @@ buildPythonPackage rec {
 
   disabledTestPaths =
     [ "bx_py_utils_tests/tests/test_project_setup.py" ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # processify() doesn't work under darwin
       # https://github.com/boxine/bx_py_utils/issues/80
       "bx_py_utils_tests/tests/test_processify.py"
diff --git a/pkgs/development/python-modules/bytewax/default.nix b/pkgs/development/python-modules/bytewax/default.nix
index 22d022c454be..36c1efc4266c 100644
--- a/pkgs/development/python-modules/bytewax/default.nix
+++ b/pkgs/development/python-modules/bytewax/default.nix
@@ -104,6 +104,6 @@ buildPythonPackage rec {
       kfollesdal
     ];
     # mismatched type expected u8, found i8
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/python-modules/capstone/4.nix b/pkgs/development/python-modules/capstone/4.nix
index 66b57a01bcb2..b7c31d336091 100644
--- a/pkgs/development/python-modules/capstone/4.nix
+++ b/pkgs/development/python-modules/capstone/4.nix
@@ -30,7 +30,7 @@ buildPythonPackage {
 
   # aarch64 only available from MacOS SDK 11 onwards, so fix the version tag.
   # otherwise, bdist_wheel may detect "macosx_10_6_arm64" which doesn't make sense.
-  setupPyBuildFlags = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  setupPyBuildFlags = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     "--plat-name"
     "macosx_11_0"
   ];
diff --git a/pkgs/development/python-modules/capstone/default.nix b/pkgs/development/python-modules/capstone/default.nix
index 74035c9bef30..e735871268e5 100644
--- a/pkgs/development/python-modules/capstone/default.nix
+++ b/pkgs/development/python-modules/capstone/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
 
   # aarch64 only available from MacOS SDK 11 onwards, so fix the version tag.
   # otherwise, bdist_wheel may detect "macosx_10_6_arm64" which doesn't make sense.
-  setupPyBuildFlags = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  setupPyBuildFlags = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     "--plat-name"
     "macosx_11_0"
   ];
diff --git a/pkgs/development/python-modules/capturer/default.nix b/pkgs/development/python-modules/capturer/default.nix
index 856da1f95369..b9895dd18f97 100644
--- a/pkgs/development/python-modules/capturer/default.nix
+++ b/pkgs/development/python-modules/capturer/default.nix
@@ -22,7 +22,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [ humanfriendly ];
 
   # hangs on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   nativeCheckInputs = [ pytestCheckHook ];
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/cassandra-driver/default.nix b/pkgs/development/python-modules/cassandra-driver/default.nix
index 9548bd1214d8..0f03b20e196d 100644
--- a/pkgs/development/python-modules/cassandra-driver/default.nix
+++ b/pkgs/development/python-modules/cassandra-driver/default.nix
@@ -86,7 +86,7 @@ buildPythonPackage rec {
   # Make /etc/protocols accessible to allow socket.getprotobyname('tcp') in sandbox,
   # also /etc/resolv.conf is referenced by some tests
   preCheck =
-    (lib.optionalString stdenv.isLinux ''
+    (lib.optionalString stdenv.hostPlatform.isLinux ''
       echo "nameserver 127.0.0.1" > resolv.conf
       export NIX_REDIRECTS=/etc/protocols=${iana-etc}/etc/protocols:/etc/resolv.conf=$(realpath resolv.conf)
       export LD_PRELOAD=${libredirect}/lib/libredirect.so
diff --git a/pkgs/development/python-modules/celery/default.nix b/pkgs/development/python-modules/celery/default.nix
index d5c372c5d498..99854b9d772e 100644
--- a/pkgs/development/python-modules/celery/default.nix
+++ b/pkgs/development/python-modules/celery/default.nix
@@ -97,7 +97,7 @@ buildPythonPackage rec {
       "test_stamping_headers_in_options"
       "test_stamping_with_replace"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Too many open files on hydra
       "test_cleanup"
       "test_with_autoscaler_file_descriptor_safety"
diff --git a/pkgs/development/python-modules/cffi/default.nix b/pkgs/development/python-modules/cffi/default.nix
index 9fbbdd371f9b..6f12d691c7d1 100644
--- a/pkgs/development/python-modules/cffi/default.nix
+++ b/pkgs/development/python-modules/cffi/default.nix
@@ -49,7 +49,7 @@ else
         ./clang-pointer-substraction-warning.diff
       ];
 
-    postPatch = lib.optionalString stdenv.isDarwin ''
+    postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
       # Remove setup.py impurities
       substituteInPlace setup.py \
         --replace "'-iwithsysroot/usr/include/ffi'" "" \
diff --git a/pkgs/development/python-modules/cffsubr/default.nix b/pkgs/development/python-modules/cffsubr/default.nix
index c9642235e37e..46dabb2711af 100644
--- a/pkgs/development/python-modules/cffsubr/default.nix
+++ b/pkgs/development/python-modules/cffsubr/default.nix
@@ -49,7 +49,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "cffsubr" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     changelog = "https://github.com/adobe-type-tools/cffsubr/releases/tag/v${version}";
     description = "Standalone CFF subroutinizer based on AFDKO tx";
     mainProgram = "cffsubr";
diff --git a/pkgs/development/python-modules/cheroot/default.nix b/pkgs/development/python-modules/cheroot/default.nix
index 01773d1c20cf..2b4c9f427acb 100644
--- a/pkgs/development/python-modules/cheroot/default.nix
+++ b/pkgs/development/python-modules/cheroot/default.nix
@@ -76,7 +76,7 @@ buildPythonPackage rec {
       "tls" # touches network
       "peercreds_unix_sock" # test urls no longer allowed
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "http_over_https_error"
       "bind_addr_unix"
       "test_ssl_env"
diff --git a/pkgs/development/python-modules/cherrypy/default.nix b/pkgs/development/python-modules/cherrypy/default.nix
index 71d9a9aedfb5..1b0574d05726 100644
--- a/pkgs/development/python-modules/cherrypy/default.nix
+++ b/pkgs/development/python-modules/cherrypy/default.nix
@@ -101,9 +101,9 @@ buildPythonPackage rec {
       "test_1_Ram_Concurrency"
       "test_2_File_Concurrency"
     ]
-    ++ lib.optionals stdenv.isDarwin [ "test_block" ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_block" ];
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [ "cherrypy/test/test_config_server.py" ];
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [ "cherrypy/test/test_config_server.py" ];
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/development/python-modules/chromadb/default.nix b/pkgs/development/python-modules/chromadb/default.nix
index fa1f0f94591c..eb44d2a9b5c2 100644
--- a/pkgs/development/python-modules/chromadb/default.nix
+++ b/pkgs/development/python-modules/chromadb/default.nix
@@ -91,7 +91,7 @@ buildPythonPackage rec {
   buildInputs = [
     openssl
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   dependencies = [
     bcrypt
@@ -175,6 +175,6 @@ buildPythonPackage rec {
     license = licenses.asl20;
     maintainers = with maintainers; [ fab ];
     mainProgram = "chroma";
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/python-modules/circus/default.nix b/pkgs/development/python-modules/circus/default.nix
index b87e4c42568b..858b9142121c 100644
--- a/pkgs/development/python-modules/circus/default.nix
+++ b/pkgs/development/python-modules/circus/default.nix
@@ -38,7 +38,7 @@ buildPythonPackage rec {
   ];
 
   # On darwin: Too many open files
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     ulimit -n 1024
   '';
 
diff --git a/pkgs/development/python-modules/cirq-core/default.nix b/pkgs/development/python-modules/cirq-core/default.nix
index d0a506c5f996..4c20d01f302f 100644
--- a/pkgs/development/python-modules/cirq-core/default.nix
+++ b/pkgs/development/python-modules/cirq-core/default.nix
@@ -89,7 +89,7 @@ buildPythonPackage rec {
     "cirq/_version_test.py"
   ];
 
-  disabledTests = lib.optionals stdenv.isAarch64 [
+  disabledTests = lib.optionals stdenv.hostPlatform.isAarch64 [
     # https://github.com/quantumlib/Cirq/issues/5924
     "test_prepare_two_qubit_state_using_sqrt_iswap"
   ];
diff --git a/pkgs/development/python-modules/clarabel/default.nix b/pkgs/development/python-modules/clarabel/default.nix
index d81f01b34fc5..f6e4e09edc7c 100644
--- a/pkgs/development/python-modules/clarabel/default.nix
+++ b/pkgs/development/python-modules/clarabel/default.nix
@@ -31,7 +31,7 @@ buildPythonPackage rec {
     maturinBuildHook
   ];
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   propagatedBuildInputs = [
     numpy
diff --git a/pkgs/development/python-modules/clickgen/default.nix b/pkgs/development/python-modules/clickgen/default.nix
index 50b2f1b1d241..a8109184f251 100644
--- a/pkgs/development/python-modules/clickgen/default.nix
+++ b/pkgs/development/python-modules/clickgen/default.nix
@@ -55,6 +55,6 @@ buildPythonPackage rec {
     maintainers = with maintainers; [ AdsonCicilioti ];
     # fails with:
     # ld: unknown option: -zdefs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/clustershell/default.nix b/pkgs/development/python-modules/clustershell/default.nix
index 9c166af7f550..f52f290be8d5 100644
--- a/pkgs/development/python-modules/clustershell/default.nix
+++ b/pkgs/development/python-modules/clustershell/default.nix
@@ -81,7 +81,7 @@ buildPythonPackage rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Scalable Python framework for cluster administration";
     homepage = "https://cea-hpc.github.io/clustershell";
     license = licenses.lgpl21;
diff --git a/pkgs/development/python-modules/cmd2/default.nix b/pkgs/development/python-modules/cmd2/default.nix
index c78eda407871..75b2d0547909 100644
--- a/pkgs/development/python-modules/cmd2/default.nix
+++ b/pkgs/development/python-modules/cmd2/default.nix
@@ -60,7 +60,7 @@ buildPythonPackage rec {
     ''
       sed -i "/--cov/d" setup.cfg
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # Fake the impure dependencies pbpaste and pbcopy
       mkdir bin
       echo '#!${stdenv.shell}' > bin/pbpaste
@@ -69,7 +69,7 @@ buildPythonPackage rec {
       export PATH=$(realpath bin):$PATH
     '';
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   pythonImportsCheck = [ "cmd2" ];
 
diff --git a/pkgs/development/python-modules/cmdstanpy/default.nix b/pkgs/development/python-modules/cmdstanpy/default.nix
index cb31be20a170..ead29ecbb939 100644
--- a/pkgs/development/python-modules/cmdstanpy/default.nix
+++ b/pkgs/development/python-modules/cmdstanpy/default.nix
@@ -77,7 +77,7 @@ buildPythonPackage rec {
       "test_pathfinder_threads"
       "test_save_profile"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_init_types" # CmdStan error: error during processing Operation not permitted
     ];
 
diff --git a/pkgs/development/python-modules/cmigemo/default.nix b/pkgs/development/python-modules/cmigemo/default.nix
index 599f91f14106..9237631c0532 100644
--- a/pkgs/development/python-modules/cmigemo/default.nix
+++ b/pkgs/development/python-modules/cmigemo/default.nix
@@ -37,7 +37,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "cmigemo" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/mooz/python-cmigemo";
     description = "Pure python binding for C/Migemo";
     license = licenses.mit;
diff --git a/pkgs/development/python-modules/cmsis-pack-manager/default.nix b/pkgs/development/python-modules/cmsis-pack-manager/default.nix
index 85ef05db3e52..554e9516d53f 100644
--- a/pkgs/development/python-modules/cmsis-pack-manager/default.nix
+++ b/pkgs/development/python-modules/cmsis-pack-manager/default.nix
@@ -37,7 +37,7 @@ buildPythonPackage rec {
     rustPlatform.maturinBuildHook
   ];
   propagatedNativeBuildInputs = [ cffi ];
-  buildInputs = [ libiconv ] ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
+  buildInputs = [ libiconv ] ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
   propagatedBuildInputs = [
     appdirs
     pyyaml
diff --git a/pkgs/development/python-modules/coloredlogs/default.nix b/pkgs/development/python-modules/coloredlogs/default.nix
index 348d4080498d..182c5c370624 100644
--- a/pkgs/development/python-modules/coloredlogs/default.nix
+++ b/pkgs/development/python-modules/coloredlogs/default.nix
@@ -35,7 +35,7 @@ buildPythonPackage rec {
 
   # capturer is broken on darwin / py38, so we skip the test until a fix for
   # https://github.com/xolox/python-capturer/issues/10 is released.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   preCheck = ''
     # Required for the CLI test
diff --git a/pkgs/development/python-modules/commoncode/default.nix b/pkgs/development/python-modules/commoncode/default.nix
index 359f1935f2fc..3e8c1eb0182e 100644
--- a/pkgs/development/python-modules/commoncode/default.nix
+++ b/pkgs/development/python-modules/commoncode/default.nix
@@ -57,7 +57,7 @@ buildPythonPackage rec {
       "test_walk_can_walk_non_utf8_path_from_unicode_path"
       "test_resource_iter_can_walk_non_utf8_path_from_unicode_path_with_dirs"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # expected result is tailored towards the quirks of upstream's
       # CI environment on darwin
       "test_searchable_paths"
diff --git a/pkgs/development/python-modules/configparser/default.nix b/pkgs/development/python-modules/configparser/default.nix
index d078fceee371..6e6e38f0b3af 100644
--- a/pkgs/development/python-modules/configparser/default.nix
+++ b/pkgs/development/python-modules/configparser/default.nix
@@ -28,7 +28,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [ pytestCheckHook ];
 
   preConfigure = ''
-    export LC_ALL=${if stdenv.isDarwin then "en_US" else "C"}.UTF-8
+    export LC_ALL=${if stdenv.hostPlatform.isDarwin then "en_US" else "C"}.UTF-8
   '';
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/construct/default.nix b/pkgs/development/python-modules/construct/default.nix
index 729d6df5644d..d21dd11e010a 100644
--- a/pkgs/development/python-modules/construct/default.nix
+++ b/pkgs/development/python-modules/construct/default.nix
@@ -51,7 +51,7 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "construct" ];
 
-  disabledTests = [ "test_benchmarks" ] ++ lib.optionals stdenv.isDarwin [ "test_multiprocessing" ];
+  disabledTests = [ "test_benchmarks" ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_multiprocessing" ];
 
   meta = with lib; {
     description = "Powerful declarative parser (and builder) for binary data";
diff --git a/pkgs/development/python-modules/cot/default.nix b/pkgs/development/python-modules/cot/default.nix
index ac144b26450b..fb3a138627ad 100644
--- a/pkgs/development/python-modules/cot/default.nix
+++ b/pkgs/development/python-modules/cot/default.nix
@@ -69,7 +69,7 @@ buildPythonPackage rec {
     "test_serial_fixup_stubbed"
     "test_serial_fixup_stubbed_create"
     "test_serial_fixup_stubbed_vm_not_found"
-  ] ++ lib.optionals stdenv.isDarwin [ "test_serial_fixup_invalid_host" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_serial_fixup_invalid_host" ];
 
   pythonImportsCheck = [ "COT" ];
 
diff --git a/pkgs/development/python-modules/craft-application/default.nix b/pkgs/development/python-modules/craft-application/default.nix
index 04c488586c9e..96bec81c9172 100644
--- a/pkgs/development/python-modules/craft-application/default.nix
+++ b/pkgs/development/python-modules/craft-application/default.nix
@@ -96,7 +96,7 @@ buildPythonPackage rec {
       # Tests expecting pytest-time
       "test_monitor_builds_success"
     ]
-    ++ lib.optionals stdenv.isAarch64 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [
       # These tests have hardcoded "amd64" strings which fail on aarch64
       "test_process_grammar_build_for"
       "test_process_grammar_platform"
diff --git a/pkgs/development/python-modules/craft-parts/default.nix b/pkgs/development/python-modules/craft-parts/default.nix
index 2ad66a7d4a75..c3fd4e2abb54 100644
--- a/pkgs/development/python-modules/craft-parts/default.nix
+++ b/pkgs/development/python-modules/craft-parts/default.nix
@@ -96,7 +96,7 @@ buildPythonPackage rec {
       "tests/unit/packages/test_deb.py"
       "tests/unit/packages/test_chisel.py"
     ]
-    ++ lib.optionals stdenv.isAarch64 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [
       # These tests have hardcoded "amd64" strings which fail on aarch64
       "tests/unit/executor/test_environment.py"
       "tests/unit/features/overlay/test_executor_environment.py"
diff --git a/pkgs/development/python-modules/cram/default.nix b/pkgs/development/python-modules/cram/default.nix
index 13ed15f5246d..1f92211953ca 100644
--- a/pkgs/development/python-modules/cram/default.nix
+++ b/pkgs/development/python-modules/cram/default.nix
@@ -36,6 +36,6 @@ buildPythonPackage rec {
     license = lib.licenses.gpl2Plus;
     maintainers = with lib.maintainers; [ jluttine ];
     # Tests fail on i686: https://hydra.nixos.org/build/52896671/nixlog/4
-    broken = stdenv.isi686;
+    broken = stdenv.hostPlatform.isi686;
   };
 }
diff --git a/pkgs/development/python-modules/cramjam/default.nix b/pkgs/development/python-modules/cramjam/default.nix
index e61e75da117f..34571f05f774 100644
--- a/pkgs/development/python-modules/cramjam/default.nix
+++ b/pkgs/development/python-modules/cramjam/default.nix
@@ -35,7 +35,7 @@ buildPythonPackage rec {
     maturinBuildHook
   ];
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   nativeCheckInputs = [
     hypothesis
diff --git a/pkgs/development/python-modules/cryptg/default.nix b/pkgs/development/python-modules/cryptg/default.nix
index 43e5ac7e6163..c038eb46668a 100644
--- a/pkgs/development/python-modules/cryptg/default.nix
+++ b/pkgs/development/python-modules/cryptg/default.nix
@@ -37,7 +37,7 @@ buildPythonPackage rec {
     cargo
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   # has no tests
   doCheck = false;
diff --git a/pkgs/development/python-modules/cryptography/default.nix b/pkgs/development/python-modules/cryptography/default.nix
index 29076051578e..1d1e43a03165 100644
--- a/pkgs/development/python-modules/cryptography/default.nix
+++ b/pkgs/development/python-modules/cryptography/default.nix
@@ -57,7 +57,7 @@ buildPythonPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       Security
       libiconv
     ]
diff --git a/pkgs/development/python-modules/css-inline/default.nix b/pkgs/development/python-modules/css-inline/default.nix
index b9faf71842b6..a108599eb6ba 100644
--- a/pkgs/development/python-modules/css-inline/default.nix
+++ b/pkgs/development/python-modules/css-inline/default.nix
@@ -51,7 +51,7 @@ buildPythonPackage rec {
     rustPlatform.maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     Security
     SystemConfiguration
@@ -70,7 +70,7 @@ buildPythonPackage rec {
       "test_cache"
       "test_remote_stylesheet"
     ]
-    ++ lib.optionals (stdenv.isDarwin) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
       # pyo3_runtime.PanicException: event loop thread panicked
       "test_invalid_href"
     ];
diff --git a/pkgs/development/python-modules/curio/default.nix b/pkgs/development/python-modules/curio/default.nix
index 087d85405e26..434af5cb974a 100644
--- a/pkgs/development/python-modules/curio/default.nix
+++ b/pkgs/development/python-modules/curio/default.nix
@@ -46,7 +46,7 @@ buildPythonPackage rec {
       "test_unix_echo" # socket bind error on hydra when built with other packages
       "test_unix_ssl_server" # socket bind error on hydra when built with other packages
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # connects to python.org:1, expects an OsError, hangs in the darwin sandbox
       "test_create_bad_connection"
     ];
diff --git a/pkgs/development/python-modules/curtsies/default.nix b/pkgs/development/python-modules/curtsies/default.nix
index b2467a02e09b..7be20c559019 100644
--- a/pkgs/development/python-modules/curtsies/default.nix
+++ b/pkgs/development/python-modules/curtsies/default.nix
@@ -42,6 +42,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/bpython/curtsies/blob/v${version}/CHANGELOG.md";
     license = licenses.mit;
     maintainers = with maintainers; [ flokli ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/cvxpy/default.nix b/pkgs/development/python-modules/cvxpy/default.nix
index 7ed3c7563777..4e49046a1e23 100644
--- a/pkgs/development/python-modules/cvxpy/default.nix
+++ b/pkgs/development/python-modules/cvxpy/default.nix
@@ -21,7 +21,7 @@
   # checks
   pytestCheckHook,
 
-  useOpenmp ? (!stdenv.isDarwin),
+  useOpenmp ? (!stdenv.hostPlatform.isDarwin),
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/cython/0.nix b/pkgs/development/python-modules/cython/0.nix
index 8dc7db31fe3f..a484892c0040 100644
--- a/pkgs/development/python-modules/cython/0.nix
+++ b/pkgs/development/python-modules/cython/0.nix
@@ -24,8 +24,8 @@ let
     # Some tests in the test suite isn't working on aarch64. Disable them for
     # now until upstream finds a workaround.
     # Upstream issue here: https://github.com/cython/cython/issues/2308
-    ++ lib.optionals stdenv.isAarch64 [ "numpy_memoryview" ]
-    ++ lib.optionals stdenv.isi686 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [ "numpy_memoryview" ]
+    ++ lib.optionals stdenv.hostPlatform.isi686 [
       "future_division"
       "overflow_check_longlong"
     ];
@@ -87,7 +87,7 @@ buildPythonPackage rec {
   # https://github.com/cython/cython/issues/2785
   # Temporary solution
   doCheck = false;
-  # doCheck = !stdenv.isDarwin;
+  # doCheck = !stdenv.hostPlatform.isDarwin;
 
   # force regeneration of generated code in source distributions
   # https://github.com/cython/cython/issues/5089
diff --git a/pkgs/development/python-modules/cython/default.nix b/pkgs/development/python-modules/cython/default.nix
index 2d3333ecec6a..63e2821cde39 100644
--- a/pkgs/development/python-modules/cython/default.nix
+++ b/pkgs/development/python-modules/cython/default.nix
@@ -26,8 +26,8 @@ let
     # Some tests in the test suite isn't working on aarch64. Disable them for
     # now until upstream finds a workaround.
     # Upstream issue here: https://github.com/cython/cython/issues/2308
-    ++ lib.optionals stdenv.isAarch64 [ "numpy_memoryview" ]
-    ++ lib.optionals stdenv.isi686 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [ "numpy_memoryview" ]
+    ++ lib.optionals stdenv.hostPlatform.isi686 [
       "future_division"
       "overflow_check_longlong"
     ];
@@ -70,7 +70,7 @@ buildPythonPackage rec {
   # https://github.com/cython/cython/issues/2785
   # Temporary solution
   doCheck = false;
-  # doCheck = !stdenv.isDarwin;
+  # doCheck = !stdenv.hostPlatform.isDarwin;
 
   passthru.tests = {
     inherit sage;
diff --git a/pkgs/development/python-modules/daphne/default.nix b/pkgs/development/python-modules/daphne/default.nix
index 0cae95af4c80..7e85adb0c29d 100644
--- a/pkgs/development/python-modules/daphne/default.nix
+++ b/pkgs/development/python-modules/daphne/default.nix
@@ -59,7 +59,7 @@ buildPythonPackage rec {
   ];
 
   # Most tests fail on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   pythonImportsCheck = [ "daphne" ];
 
diff --git a/pkgs/development/python-modules/darkdetect/default.nix b/pkgs/development/python-modules/darkdetect/default.nix
index fe38977f2ac0..c51f22fb368d 100644
--- a/pkgs/development/python-modules/darkdetect/default.nix
+++ b/pkgs/development/python-modules/darkdetect/default.nix
@@ -27,7 +27,7 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "darkdetect" ];
 
-  postPatch = lib.optionalString (stdenv.isLinux) ''
+  postPatch = lib.optionalString (stdenv.hostPlatform.isLinux) ''
     substituteInPlace darkdetect/_linux_detect.py \
       --replace "'gsettings'" "'${glib.bin}/bin/gsettings'"
   '';
diff --git a/pkgs/development/python-modules/dask-jobqueue/default.nix b/pkgs/development/python-modules/dask-jobqueue/default.nix
index c4c2100ae032..8c43fc9f260f 100644
--- a/pkgs/development/python-modules/dask-jobqueue/default.nix
+++ b/pkgs/development/python-modules/dask-jobqueue/default.nix
@@ -83,7 +83,7 @@ buildPythonPackage rec {
       "test_worker_name_uses_cluster_name"
       "test_wrong_parameter_error"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # ValueError: invalid operation on non-started TCPListener
       "test_header"
       "test_lsf_unit_detection"
diff --git a/pkgs/development/python-modules/dask/default.nix b/pkgs/development/python-modules/dask/default.nix
index 7ea1779fd21e..d26caf858cd0 100644
--- a/pkgs/development/python-modules/dask/default.nix
+++ b/pkgs/development/python-modules/dask/default.nix
@@ -123,14 +123,14 @@ let
     ];
 
     disabledTests =
-      lib.optionals stdenv.isDarwin [
+      lib.optionals stdenv.hostPlatform.isDarwin [
         # Test requires features of python3Packages.psutil that are
         # blocked in sandboxed-builds
         "test_auto_blocksize_csv"
         # AttributeError: 'str' object has no attribute 'decode'
         "test_read_dir_nometa"
       ]
-      ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+      ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
         # concurrent.futures.process.BrokenProcessPool: A process in the process pool terminated abpruptly...
         "test_foldby_tree_reduction"
         "test_to_bag"
diff --git a/pkgs/development/python-modules/datafusion/default.nix b/pkgs/development/python-modules/datafusion/default.nix
index e73d37c4486c..b7c68f839e87 100644
--- a/pkgs/development/python-modules/datafusion/default.nix
+++ b/pkgs/development/python-modules/datafusion/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
 
   buildInputs =
     [ protobuf ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       Security
       SystemConfiguration
diff --git a/pkgs/development/python-modules/datalad-gooey/default.nix b/pkgs/development/python-modules/datalad-gooey/default.nix
index a84e6c7a2be7..fcc3fa376330 100644
--- a/pkgs/development/python-modules/datalad-gooey/default.nix
+++ b/pkgs/development/python-modules/datalad-gooey/default.nix
@@ -37,7 +37,7 @@ buildPythonPackage {
     datalad-next
     outdated
     datalad
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.AppleScriptKit ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.AppleScriptKit ];
 
   pythonRemoveDeps = [ "applescript" ];
 
diff --git a/pkgs/development/python-modules/datatable/default.nix b/pkgs/development/python-modules/datatable/default.nix
index 6a7c80ada33e..1608ec12e8f2 100644
--- a/pkgs/development/python-modules/datatable/default.nix
+++ b/pkgs/development/python-modules/datatable/default.nix
@@ -53,7 +53,7 @@ buildPythonPackage rec {
   ];
 
   LLVM = llvm;
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-isystem ${lib.getDev libcxx}/include/c++/v1";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-isystem ${lib.getDev libcxx}/include/c++/v1";
 
   # test suite is very cpu intensive, only run small subset to ensure package is working as expected
   pytestFlagsArray = [ "tests/test-sets.py" ];
diff --git a/pkgs/development/python-modules/dbt-extractor/default.nix b/pkgs/development/python-modules/dbt-extractor/default.nix
index 2e3eecc5dfcd..89066e5c9c50 100644
--- a/pkgs/development/python-modules/dbt-extractor/default.nix
+++ b/pkgs/development/python-modules/dbt-extractor/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
     rustPlatform.maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   # no python tests exist
   doCheck = false;
diff --git a/pkgs/development/python-modules/debugpy/default.nix b/pkgs/development/python-modules/debugpy/default.nix
index 18e9acec9b57..3dea1af5b378 100644
--- a/pkgs/development/python-modules/debugpy/default.nix
+++ b/pkgs/development/python-modules/debugpy/default.nix
@@ -58,14 +58,14 @@ buildPythonPackage rec {
       # - https://github.com/NixOS/nixpkgs/issues/251045
       ./skip-attach-pid-tests.patch
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       # Hard code GDB path (used to attach to process)
       (substituteAll {
         src = ./hardcode-gdb.patch;
         inherit gdb;
       })
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Hard code LLDB path (used to attach to process)
       (substituteAll {
         src = ./hardcode-lldb.patch;
@@ -119,12 +119,12 @@ buildPythonPackage rec {
       export DEBUGPY_PROCESS_SPAWN_TIMEOUT=0
       export DEBUGPY_PROCESS_EXIT_TIMEOUT=0
     ''
-    + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+    + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
       # https://github.com/python/cpython/issues/74570#issuecomment-1093748531
       export no_proxy='*';
     '';
 
-  postCheck = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  postCheck = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     unset no_proxy
   '';
 
diff --git a/pkgs/development/python-modules/deltalake/default.nix b/pkgs/development/python-modules/deltalake/default.nix
index a30d199a2287..e4065fa10b97 100644
--- a/pkgs/development/python-modules/deltalake/default.nix
+++ b/pkgs/development/python-modules/deltalake/default.nix
@@ -41,7 +41,7 @@ buildPythonPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
     libiconv
diff --git a/pkgs/development/python-modules/demesdraw/default.nix b/pkgs/development/python-modules/demesdraw/default.nix
index d4fe828315d3..6a3c4d44e99a 100644
--- a/pkgs/development/python-modules/demesdraw/default.nix
+++ b/pkgs/development/python-modules/demesdraw/default.nix
@@ -41,7 +41,7 @@ buildPythonPackage rec {
 
   # This variable is needed to suppress the "Trace/BPT trap: 5" error in Darwin's checkPhase.
   # Not sure of the details, but we can avoid it by changing the matplotlib backend during testing.
-  env.MPLBACKEND = lib.optionalString stdenv.isDarwin "Agg";
+  env.MPLBACKEND = lib.optionalString stdenv.hostPlatform.isDarwin "Agg";
 
   nativeCheckInputs = [
     pytestCheckHook
diff --git a/pkgs/development/python-modules/deploykit/default.nix b/pkgs/development/python-modules/deploykit/default.nix
index 01183b27a8d7..e2882a7fa7f5 100644
--- a/pkgs/development/python-modules/deploykit/default.nix
+++ b/pkgs/development/python-modules/deploykit/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [ "test_ssh" ];
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [ "test_ssh" ];
 
   # don't swallow stdout/stderr
   pytestFlagsArray = [ "-s" ];
diff --git a/pkgs/development/python-modules/desktop-notifier/default.nix b/pkgs/development/python-modules/desktop-notifier/default.nix
index a6260c35ad5f..30c5275edbf9 100644
--- a/pkgs/development/python-modules/desktop-notifier/default.nix
+++ b/pkgs/development/python-modules/desktop-notifier/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
       bidict
       packaging
     ]
-    ++ lib.optionals stdenv.isLinux [ dbus-fast ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ dbus-fast ]
     ++ lib.optionals stdenv.hostPlatform.isDarwin [ rubicon-objc ];
 
   # no tests available, do the imports check instead
diff --git a/pkgs/development/python-modules/detectron2/default.nix b/pkgs/development/python-modules/detectron2/default.nix
index 2247b4581a4d..95506510e214 100644
--- a/pkgs/development/python-modules/detectron2/default.nix
+++ b/pkgs/development/python-modules/detectron2/default.nix
@@ -163,7 +163,7 @@ buildPythonPackage {
       "test_overlay_instances_no_boxes"
       "test_get_bounding_box"
     ]
-    ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       "test_build_batch_dataloader_inference"
       "test_build_dataloader_inference"
       "test_build_iterable_dataloader_inference"
diff --git a/pkgs/development/python-modules/devito/default.nix b/pkgs/development/python-modules/devito/default.nix
index 95ec86ff5eb3..195c77b97864 100644
--- a/pkgs/development/python-modules/devito/default.nix
+++ b/pkgs/development/python-modules/devito/default.nix
@@ -100,18 +100,18 @@ buildPythonPackage rec {
       "test_subdomainset_mpi"
       "test_subdomains_mpi"
     ]
-    ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       # FAILED tests/test_unexpansion.py::Test2Pass::test_v0 - assert False
       "test_v0"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # FAILED tests/test_caching.py::TestCaching::test_special_symbols - ValueError: not enough values to unpack (expected 3, got 2)
       "test_special_symbols"
 
       # FAILED tests/test_unexpansion.py::Test2Pass::test_v0 - codepy.CompileError: module compilation failed
       "test_v0"
     ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
       # Numerical tests
       "test_lm_fb"
       "test_lm_ds"
@@ -127,7 +127,7 @@ buildPythonPackage rec {
       "tests/test_dse.py"
       "tests/test_gradient.py"
     ]
-    ++ lib.optionals ((stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin) [ "tests/test_dle.py" ];
+    ++ lib.optionals ((stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin) [ "tests/test_dle.py" ];
 
   pythonImportsCheck = [ "devito" ];
 
diff --git a/pkgs/development/python-modules/diskcache/default.nix b/pkgs/development/python-modules/diskcache/default.nix
index c2a18535a763..8211267f2eb0 100644
--- a/pkgs/development/python-modules/diskcache/default.nix
+++ b/pkgs/development/python-modules/diskcache/default.nix
@@ -34,7 +34,7 @@ buildPythonPackage rec {
   '';
 
   # Darwin sandbox causes most tests to fail
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   disabledTests = [
     # Very time sensitive, can fail on over subscribed machines
diff --git a/pkgs/development/python-modules/django-postgresql-netfields/default.nix b/pkgs/development/python-modules/django-postgresql-netfields/default.nix
index d3fb086fc417..cf9685e0b2ac 100644
--- a/pkgs/development/python-modules/django-postgresql-netfields/default.nix
+++ b/pkgs/development/python-modules/django-postgresql-netfields/default.nix
@@ -36,7 +36,7 @@ buildPythonPackage rec {
     six
   ];
 
-  doCheck = !stdenv.isDarwin; # could not create shared memory segment: Operation not permitted
+  doCheck = !stdenv.hostPlatform.isDarwin; # could not create shared memory segment: Operation not permitted
 
   nativeCheckInputs = [
     djangorestframework
diff --git a/pkgs/development/python-modules/django-q/default.nix b/pkgs/development/python-modules/django-q/default.nix
index 99b8aec53a36..0cc7ea246e8c 100644
--- a/pkgs/development/python-modules/django-q/default.nix
+++ b/pkgs/development/python-modules/django-q/default.nix
@@ -76,7 +76,7 @@ buildPythonPackage rec {
     "test_mongo"
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Multiprocessing distributed task queue for Django";
diff --git a/pkgs/development/python-modules/django/4.nix b/pkgs/development/python-modules/django/4.nix
index 99d71f2b38b1..2d7bb6ce9dde 100644
--- a/pkgs/development/python-modules/django/4.nix
+++ b/pkgs/development/python-modules/django/4.nix
@@ -118,7 +118,7 @@ buildPythonPackage rec {
     tzdata
   ] ++ lib.flatten (lib.attrValues passthru.optional-dependencies);
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   preCheck = ''
     # make sure the installed library gets imported
diff --git a/pkgs/development/python-modules/django/5.nix b/pkgs/development/python-modules/django/5.nix
index dd124f49e152..6cf85445c402 100644
--- a/pkgs/development/python-modules/django/5.nix
+++ b/pkgs/development/python-modules/django/5.nix
@@ -114,7 +114,7 @@ buildPythonPackage rec {
     tzdata
   ] ++ lib.flatten (lib.attrValues optional-dependencies);
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   preCheck = ''
     # make sure the installed library gets imported
diff --git a/pkgs/development/python-modules/dlinfo/default.nix b/pkgs/development/python-modules/dlinfo/default.nix
index bb9c849592dd..1b774b8e85c0 100644
--- a/pkgs/development/python-modules/dlinfo/default.nix
+++ b/pkgs/development/python-modules/dlinfo/default.nix
@@ -29,6 +29,6 @@ buildPythonPackage rec {
     homepage = "https://github.com/cloudflightio/python-dlinfo";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ dotlambda ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/dm-tree/default.nix b/pkgs/development/python-modules/dm-tree/default.nix
index 6062d202a3ce..909cd3aa523a 100644
--- a/pkgs/development/python-modules/dm-tree/default.nix
+++ b/pkgs/development/python-modules/dm-tree/default.nix
@@ -48,7 +48,7 @@ buildPythonPackage rec {
   patches = [
     patchCMakeAbseil
     patchCMakePybind
-  ] ++ (lib.optional stdenv.isDarwin ./0003-don-t-configure-apple.patch);
+  ] ++ (lib.optional stdenv.hostPlatform.isDarwin ./0003-don-t-configure-apple.patch);
 
   dontUseCmakeConfigure = true;
 
diff --git a/pkgs/development/python-modules/docker/default.nix b/pkgs/development/python-modules/docker/default.nix
index 7a36c27e8e22..59ab52857824 100644
--- a/pkgs/development/python-modules/docker/default.nix
+++ b/pkgs/development/python-modules/docker/default.nix
@@ -62,7 +62,7 @@ buildPythonPackage rec {
   pytestFlagsArray = [ "tests/unit" ];
 
   # Deselect socket tests on Darwin because it hits the path length limit for a Unix domain socket
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     "api_test"
     "stream_response"
     "socket_file"
diff --git a/pkgs/development/python-modules/docutils/default.nix b/pkgs/development/python-modules/docutils/default.nix
index cdfb53572213..695d351f03ca 100644
--- a/pkgs/development/python-modules/docutils/default.nix
+++ b/pkgs/development/python-modules/docutils/default.nix
@@ -37,7 +37,7 @@ let
     # Only Darwin needs LANG, but we could set it in general.
     # It's done here conditionally to prevent mass-rebuilds.
     checkPhase =
-      lib.optionalString stdenv.isDarwin ''LANG="en_US.UTF-8" LC_ALL="en_US.UTF-8" ''
+      lib.optionalString stdenv.hostPlatform.isDarwin ''LANG="en_US.UTF-8" LC_ALL="en_US.UTF-8" ''
       + ''
         ${python.interpreter} test/alltests.py
       '';
diff --git a/pkgs/development/python-modules/doit/default.nix b/pkgs/development/python-modules/doit/default.nix
index 4b49ba50fe47..5840b71b18f7 100644
--- a/pkgs/development/python-modules/doit/default.nix
+++ b/pkgs/development/python-modules/doit/default.nix
@@ -34,7 +34,7 @@ let
       cloudpickle
       importlib-metadata
       toml
-    ] ++ lib.optional stdenv.isLinux pyinotify ++ lib.optional stdenv.isDarwin macfsevents;
+    ] ++ lib.optional stdenv.hostPlatform.isLinux pyinotify ++ lib.optional stdenv.hostPlatform.isDarwin macfsevents;
 
     nativeCheckInputs = [
       configclass
@@ -51,7 +51,7 @@ let
     passthru.tests = {
       # hangs on darwin
       check = doit.overridePythonAttrs (_: {
-        doCheck = !stdenv.isDarwin;
+        doCheck = !stdenv.hostPlatform.isDarwin;
       });
     };
 
diff --git a/pkgs/development/python-modules/dramatiq/default.nix b/pkgs/development/python-modules/dramatiq/default.nix
index b44873e99f9a..9eec4bba08fb 100644
--- a/pkgs/development/python-modules/dramatiq/default.nix
+++ b/pkgs/development/python-modules/dramatiq/default.nix
@@ -88,7 +88,7 @@ buildPythonPackage rec {
       "test_rabbitmq_process_10k_fib_with_cli"
       "test_rabbitmq_process_1k_latency_with_cli"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Takes too long for darwin ofborg
       "test_retry_exceptions_can_specify_a_delay"
     ];
diff --git a/pkgs/development/python-modules/dtschema/default.nix b/pkgs/development/python-modules/dtschema/default.nix
index d4875e0da8aa..2dffd2d5bc95 100644
--- a/pkgs/development/python-modules/dtschema/default.nix
+++ b/pkgs/development/python-modules/dtschema/default.nix
@@ -56,7 +56,7 @@ buildPythonPackage rec {
 
     broken = (
       # Library not loaded: @rpath/libfdt.1.dylib
-      stdenv.isDarwin
+      stdenv.hostPlatform.isDarwin
       ||
 
         # see https://github.com/devicetree-org/dt-schema/issues/108
diff --git a/pkgs/development/python-modules/duckdb/default.nix b/pkgs/development/python-modules/duckdb/default.nix
index 132f72d70ee5..77b348e271f0 100644
--- a/pkgs/development/python-modules/duckdb/default.nix
+++ b/pkgs/development/python-modules/duckdb/default.nix
@@ -63,7 +63,7 @@ buildPythonPackage rec {
   ];
 
   # test flags from .github/workflows/Python.yml
-  pytestFlagsArray = [ "--verbose" ] ++ lib.optionals stdenv.isDarwin [ "tests/fast" ];
+  pytestFlagsArray = [ "--verbose" ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "tests/fast" ];
 
   disabledTestPaths = [
     # avoid dependency on mypy
diff --git a/pkgs/development/python-modules/dulwich/default.nix b/pkgs/development/python-modules/dulwich/default.nix
index 0618a1b2aaea..e4b3663dda90 100644
--- a/pkgs/development/python-modules/dulwich/default.nix
+++ b/pkgs/development/python-modules/dulwich/default.nix
@@ -81,7 +81,7 @@ buildPythonPackage rec {
     rm tests/compat/test_pack.py
   '';
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   pythonImportsCheck = [ "dulwich" ];
 
diff --git a/pkgs/development/python-modules/dvc-render/default.nix b/pkgs/development/python-modules/dvc-render/default.nix
index 2cab268fecf6..f4df5623013d 100644
--- a/pkgs/development/python-modules/dvc-render/default.nix
+++ b/pkgs/development/python-modules/dvc-render/default.nix
@@ -48,7 +48,7 @@ buildPythonPackage rec {
     pytest-test-utils
   ] ++ passthru.optional-dependencies.table ++ passthru.optional-dependencies.markdown;
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [ "tests/test_vega.py" ];
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [ "tests/test_vega.py" ];
 
   pythonImportsCheck = [ "dvc_render" ];
 
diff --git a/pkgs/development/python-modules/e3-core/default.nix b/pkgs/development/python-modules/e3-core/default.nix
index 6b2f8ad763af..a6538d67eb25 100644
--- a/pkgs/development/python-modules/e3-core/default.nix
+++ b/pkgs/development/python-modules/e3-core/default.nix
@@ -49,7 +49,7 @@ buildPythonPackage rec {
       tqdm
       stevedore
     ]
-    ++ lib.optional stdenv.isLinux [
+    ++ lib.optional stdenv.hostPlatform.isLinux [
       # See setup.py:24. These are required only on Linux. Darwin has its own set
       # of requirements.
       psutil
diff --git a/pkgs/development/python-modules/elastic-apm/default.nix b/pkgs/development/python-modules/elastic-apm/default.nix
index 6fb1abd35fdb..fb27b98608dd 100644
--- a/pkgs/development/python-modules/elastic-apm/default.nix
+++ b/pkgs/development/python-modules/elastic-apm/default.nix
@@ -85,7 +85,7 @@ buildPythonPackage rec {
       # Exclude tornado tests
       "tests/contrib/asyncio/tornado/tornado_tests.py"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Flaky tests on Darwin
       "tests/utils/threading_tests.py"
     ];
diff --git a/pkgs/development/python-modules/eliot/default.nix b/pkgs/development/python-modules/eliot/default.nix
index e5f447b233c6..04cb574509c2 100644
--- a/pkgs/development/python-modules/eliot/default.nix
+++ b/pkgs/development/python-modules/eliot/default.nix
@@ -54,7 +54,7 @@ buildPythonPackage rec {
     pytestCheckHook
     testtools
     twisted
-  ] ++ lib.optionals stdenv.isLinux [ daemontools ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ daemontools ];
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/development/python-modules/embrace/default.nix b/pkgs/development/python-modules/embrace/default.nix
index 7572e77728b2..4ad658d7736c 100644
--- a/pkgs/development/python-modules/embrace/default.nix
+++ b/pkgs/development/python-modules/embrace/default.nix
@@ -35,7 +35,7 @@ buildPythonPackage rec {
 
   # Some test for hot-reload fails on Darwin, but the rest of the library
   # should remain usable. (https://todo.sr.ht/~olly/embrace-sql/4)
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Embrace SQL keeps your SQL queries in SQL files";
diff --git a/pkgs/development/python-modules/enlighten/default.nix b/pkgs/development/python-modules/enlighten/default.nix
index 826e9fbe7805..ca0916c610a4 100644
--- a/pkgs/development/python-modules/enlighten/default.nix
+++ b/pkgs/development/python-modules/enlighten/default.nix
@@ -38,7 +38,7 @@ buildPythonPackage rec {
       "test_floats_prefixed"
       "test_subcounter_prefixed"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # https://github.com/Rockhopper-Technologies/enlighten/issues/44
       "test_autorefresh"
     ];
diff --git a/pkgs/development/python-modules/ephemeral-port-reserve/default.nix b/pkgs/development/python-modules/ephemeral-port-reserve/default.nix
index 2a7e328f978b..d582c5cfc37c 100644
--- a/pkgs/development/python-modules/ephemeral-port-reserve/default.nix
+++ b/pkgs/development/python-modules/ephemeral-port-reserve/default.nix
@@ -23,7 +23,7 @@ buildPythonPackage {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # can't find hostname in our darwin build environment
     "test_fqdn"
   ];
diff --git a/pkgs/development/python-modules/etebase/default.nix b/pkgs/development/python-modules/etebase/default.nix
index 18d5488bee36..5157aa329dcd 100644
--- a/pkgs/development/python-modules/etebase/default.nix
+++ b/pkgs/development/python-modules/etebase/default.nix
@@ -59,7 +59,7 @@ buildPythonPackage rec {
     rustc
   ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   propagatedBuildInputs = [ msgpack ];
 
@@ -76,7 +76,7 @@ buildPythonPackage rec {
   };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://www.etebase.com/";
     description = "Python client library for Etebase";
     license = licenses.bsd3;
diff --git a/pkgs/development/python-modules/eventlet/default.nix b/pkgs/development/python-modules/eventlet/default.nix
index 5fa638ddddd5..24f9ef57ed68 100644
--- a/pkgs/development/python-modules/eventlet/default.nix
+++ b/pkgs/development/python-modules/eventlet/default.nix
@@ -47,7 +47,7 @@ buildPythonPackage rec {
 
   # libredirect is not available on darwin
   # tests hang on pypy indefinitely
-  doCheck = !stdenv.isDarwin && !isPyPy;
+  doCheck = !stdenv.hostPlatform.isDarwin && !isPyPy;
 
   preCheck = lib.optionalString doCheck ''
     echo "nameserver 127.0.0.1" > resolv.conf
diff --git a/pkgs/development/python-modules/evtx/default.nix b/pkgs/development/python-modules/evtx/default.nix
index d0d8f753ea69..a31b963462a3 100644
--- a/pkgs/development/python-modules/evtx/default.nix
+++ b/pkgs/development/python-modules/evtx/default.nix
@@ -34,7 +34,7 @@ buildPythonPackage rec {
     maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   nativeCheckInputs = [ pytestCheckHook ];
 
diff --git a/pkgs/development/python-modules/fastdiff/default.nix b/pkgs/development/python-modules/fastdiff/default.nix
index 1096add5b627..4b906c6d6c1d 100644
--- a/pkgs/development/python-modules/fastdiff/default.nix
+++ b/pkgs/development/python-modules/fastdiff/default.nix
@@ -48,6 +48,6 @@ buildPythonPackage rec {
     license = licenses.mit;
     maintainers = [ ];
     # resulting compiled object panics at import
-    broken = stdenv.is32bit;
+    broken = stdenv.hostPlatform.is32bit;
   };
 }
diff --git a/pkgs/development/python-modules/fastjsonschema/default.nix b/pkgs/development/python-modules/fastjsonschema/default.nix
index e3f69aad972c..4b518e5f8ef1 100644
--- a/pkgs/development/python-modules/fastjsonschema/default.nix
+++ b/pkgs/development/python-modules/fastjsonschema/default.nix
@@ -42,7 +42,7 @@ buildPythonPackage rec {
       "remote ref"
       "definitions"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_compile_to_code_custom_format" # cannot import temporary module created during test
     ];
 
diff --git a/pkgs/development/python-modules/fasttext-predict/default.nix b/pkgs/development/python-modules/fasttext-predict/default.nix
index 6bfddc120c6f..bdd19640609e 100644
--- a/pkgs/development/python-modules/fasttext-predict/default.nix
+++ b/pkgs/development/python-modules/fasttext-predict/default.nix
@@ -16,7 +16,7 @@ buildPythonPackage rec {
     hash = "sha256-rMbf09pCHvVYI9g/aq74+PcsuU2LezpmDz4b/w9vRyc=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace setup.py \
       --replace-fail "-flto" ""
   '';
diff --git a/pkgs/development/python-modules/ffcv/default.nix b/pkgs/development/python-modules/ffcv/default.nix
index 344c7257024a..447dbb8e0f24 100644
--- a/pkgs/development/python-modules/ffcv/default.nix
+++ b/pkgs/development/python-modules/ffcv/default.nix
@@ -111,6 +111,6 @@ buildPythonPackage rec {
     ];
     # OSError: dlopen(libc.so.6, 0x0006): tried: '/usr/lib/libc.so.6' (no such file, not in dyld cache),
     # 'libc.so.6' (no such file), '/usr/local/lib/libc.so.6' (no such file), '/usr/lib/libc.so.6' (no such file, not in dyld cache)
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/ffmpy/default.nix b/pkgs/development/python-modules/ffmpy/default.nix
index 00a8a73aadad..ec639f9ef821 100644
--- a/pkgs/development/python-modules/ffmpy/default.nix
+++ b/pkgs/development/python-modules/ffmpy/default.nix
@@ -46,7 +46,7 @@ buildPythonPackage rec {
     go
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # expects a FFExecutableNotFoundError, gets a NotADirectoryError raised by os
     "test_invalid_executable_path"
   ];
diff --git a/pkgs/development/python-modules/finetuning-scheduler/default.nix b/pkgs/development/python-modules/finetuning-scheduler/default.nix
index 7d9cf816c7ba..808c8e1ab696 100644
--- a/pkgs/development/python-modules/finetuning-scheduler/default.nix
+++ b/pkgs/development/python-modules/finetuning-scheduler/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
       "test_fts_dynamo_resume"
       "test_fts_dynamo_intrafit"
     ]
-    ++ lib.optionals (stdenv.isAarch64 && stdenv.isLinux) [
+    ++ lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) [
       # slightly exceeds numerical tolerance on aarch64-linux:
       "test_fts_frozen_bn_track_running_stats"
     ];
@@ -58,6 +58,6 @@ buildPythonPackage rec {
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ bcdarwin ];
     # "No module named 'torch._C._distributed_c10d'; 'torch._C' is not a package" at import time:
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/fipy/default.nix b/pkgs/development/python-modules/fipy/default.nix
index 17f148f39f7c..2be37738ebb1 100644
--- a/pkgs/development/python-modules/fipy/default.nix
+++ b/pkgs/development/python-modules/fipy/default.nix
@@ -45,9 +45,9 @@ buildPythonPackage rec {
     future
     scikit-fmm
     openssh
-  ] ++ lib.optionals (!stdenv.isDarwin) [ gmsh ];
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ gmsh ];
 
-  nativeCheckInputs = lib.optionals (!stdenv.isDarwin) [ gmsh ];
+  nativeCheckInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ gmsh ];
 
   # NOTE: Two of the doctests in fipy.matrices.scipyMatrix._ScipyMatrix.CSR fail, and there is no
   # clean way to disable them.
diff --git a/pkgs/development/python-modules/flask-caching/default.nix b/pkgs/development/python-modules/flask-caching/default.nix
index 0f733a1b9a38..29e997acdf9a 100644
--- a/pkgs/development/python-modules/flask-caching/default.nix
+++ b/pkgs/development/python-modules/flask-caching/default.nix
@@ -49,7 +49,7 @@ buildPythonPackage rec {
       "Redis"
       "Memcache"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # ignore flaky test
       "test_cache_timeout_dynamic"
       "test_cached_view_class"
diff --git a/pkgs/development/python-modules/flask-restx/default.nix b/pkgs/development/python-modules/flask-restx/default.nix
index 55f41f6f7737..85f0218fd91b 100644
--- a/pkgs/development/python-modules/flask-restx/default.nix
+++ b/pkgs/development/python-modules/flask-restx/default.nix
@@ -65,7 +65,7 @@ buildPythonPackage rec {
       "--deselect=tests/test_inputs.py::EmailTest::test_valid_value_check"
       "--deselect=tests/test_logging.py::LoggingTest::test_override_app_level"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "--deselect=tests/test_inputs.py::EmailTest::test_invalid_values_check"
     ];
 
diff --git a/pkgs/development/python-modules/flask-testing/default.nix b/pkgs/development/python-modules/flask-testing/default.nix
index 6574dcf1613e..07d410fa1b17 100644
--- a/pkgs/development/python-modules/flask-testing/default.nix
+++ b/pkgs/development/python-modules/flask-testing/default.nix
@@ -30,7 +30,7 @@ buildPythonPackage rec {
   ];
 
   # Some of the tests use localhost networking on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   disabledTests = [
     # RuntimeError and NotImplementedError
diff --git a/pkgs/development/python-modules/fonttools/default.nix b/pkgs/development/python-modules/fonttools/default.nix
index c57065ec64fb..6898f34cb133 100644
--- a/pkgs/development/python-modules/fonttools/default.nix
+++ b/pkgs/development/python-modules/fonttools/default.nix
@@ -61,7 +61,7 @@ buildPythonPackage rec {
         ];
         plot = [ matplotlib ];
         symfont = [ sympy ];
-        type1 = lib.optional stdenv.isDarwin xattr;
+        type1 = lib.optional stdenv.hostPlatform.isDarwin xattr;
         pathops = [ skia-pathops ];
         repacker = [ uharfbuzz ];
       };
diff --git a/pkgs/development/python-modules/foxdot/default.nix b/pkgs/development/python-modules/foxdot/default.nix
index af7edb24ae95..f9faef8be2bd 100644
--- a/pkgs/development/python-modules/foxdot/default.nix
+++ b/pkgs/development/python-modules/foxdot/default.nix
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     [ tkinter ]
     # we currently build SuperCollider only on Linux
     # but FoxDot is totally usable on macOS with the official SuperCollider binary
-    ++ lib.optionals stdenv.isLinux [ supercollider ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ supercollider ];
 
   # Requires a running SuperCollider instance
   doCheck = false;
diff --git a/pkgs/development/python-modules/freud/default.nix b/pkgs/development/python-modules/freud/default.nix
index a681bd1f14b1..9fa555e28170 100644
--- a/pkgs/development/python-modules/freud/default.nix
+++ b/pkgs/development/python-modules/freud/default.nix
@@ -80,7 +80,7 @@ buildPythonPackage rec {
     matplotlib
     sympy
   ];
-  disabledTests = lib.optionals stdenv.isAarch64 [
+  disabledTests = lib.optionals stdenv.hostPlatform.isAarch64 [
     # https://github.com/glotzerlab/freud/issues/961
     "test_docstring"
   ];
diff --git a/pkgs/development/python-modules/frida-python/default.nix b/pkgs/development/python-modules/frida-python/default.nix
index d73e5645e517..8bef789110cf 100644
--- a/pkgs/development/python-modules/frida-python/default.nix
+++ b/pkgs/development/python-modules/frida-python/default.nix
@@ -47,7 +47,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ typing-extensions ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
   ];
 
diff --git a/pkgs/development/python-modules/fs/default.nix b/pkgs/development/python-modules/fs/default.nix
index 5941243645ef..e0c07195df49 100644
--- a/pkgs/development/python-modules/fs/default.nix
+++ b/pkgs/development/python-modules/fs/default.nix
@@ -62,7 +62,7 @@ buildPythonPackage rec {
 
   disabledTests =
     [ "user_data_repr" ]
-    ++ lib.optionals (stdenv.isDarwin) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
       # remove if https://github.com/PyFilesystem/pyfilesystem2/issues/430#issue-707878112 resolved
       "test_ftpfs"
     ]
diff --git a/pkgs/development/python-modules/fsspec/default.nix b/pkgs/development/python-modules/fsspec/default.nix
index e423f32d799e..832920986a39 100644
--- a/pkgs/development/python-modules/fsspec/default.nix
+++ b/pkgs/development/python-modules/fsspec/default.nix
@@ -110,7 +110,7 @@ buildPythonPackage rec {
       "test_urlpath_inference_errors"
       "test_mismatch"
     ]
-    ++ lib.optionals (stdenv.isDarwin) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
       # works locally on APFS, fails on hydra with AssertionError comparing timestamps
       # darwin hydra builder uses HFS+ and has only one second timestamp resolution
       # this two tests however, assume nanosecond resolution
diff --git a/pkgs/development/python-modules/funsor/default.nix b/pkgs/development/python-modules/funsor/default.nix
index 6afeeb9e4cda..dda85f2c798d 100644
--- a/pkgs/development/python-modules/funsor/default.nix
+++ b/pkgs/development/python-modules/funsor/default.nix
@@ -81,7 +81,7 @@ buildPythonPackage rec {
       # TODO: Try to re-enable this test at next release
       "test_torch_save"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Failures related to JIT
       # RuntimeError: required keyword attribute 'Subgraph' has the wrong type
       "test_local_param_ok"
diff --git a/pkgs/development/python-modules/fuse-python/default.nix b/pkgs/development/python-modules/fuse-python/default.nix
index ddd6d394cd0c..35eab496d91b 100644
--- a/pkgs/development/python-modules/fuse-python/default.nix
+++ b/pkgs/development/python-modules/fuse-python/default.nix
@@ -26,7 +26,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "fuse" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Python bindings for FUSE";
     homepage = "https://github.com/libfuse/python-fuse";
     license = licenses.lgpl21;
diff --git a/pkgs/development/python-modules/fusepy/default.nix b/pkgs/development/python-modules/fusepy/default.nix
index 35718a54d635..6e33666d6951 100644
--- a/pkgs/development/python-modules/fusepy/default.nix
+++ b/pkgs/development/python-modules/fusepy/default.nix
@@ -23,7 +23,7 @@ buildPythonPackage rec {
 
   # On macOS, users are expected to install macFUSE. This means fusepy should
   # be able to find libfuse in /usr/local/lib.
-  patchPhase = lib.optionalString (!stdenv.isDarwin) ''
+  patchPhase = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     substituteInPlace fuse.py --replace \
       "find_library('fuse')" "'${pkgs.fuse}/lib/libfuse.so'"
   '';
diff --git a/pkgs/development/python-modules/gb-io/default.nix b/pkgs/development/python-modules/gb-io/default.nix
index 72504c986d2e..233d12f3eac6 100644
--- a/pkgs/development/python-modules/gb-io/default.nix
+++ b/pkgs/development/python-modules/gb-io/default.nix
@@ -42,7 +42,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "gb_io" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/althonos/gb-io.py";
     description = "Python interface to gb-io, a fast GenBank parser written in Rust";
     license = licenses.mit;
diff --git a/pkgs/development/python-modules/gbulb/default.nix b/pkgs/development/python-modules/gbulb/default.nix
index 8c4252e49029..7dd4d3a2c126 100644
--- a/pkgs/development/python-modules/gbulb/default.nix
+++ b/pkgs/development/python-modules/gbulb/default.nix
@@ -45,7 +45,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "gbulb" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "GLib implementation of PEP 3156";
     homepage = "https://github.com/beeware/gbulb";
     license = licenses.asl20;
diff --git a/pkgs/development/python-modules/geopandas/default.nix b/pkgs/development/python-modules/geopandas/default.nix
index e8e78f80acc6..6d24ef442e16 100644
--- a/pkgs/development/python-modules/geopandas/default.nix
+++ b/pkgs/development/python-modules/geopandas/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
     rtree
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   preCheck = ''
     export HOME=$(mktemp -d);
diff --git a/pkgs/development/python-modules/geventhttpclient/default.nix b/pkgs/development/python-modules/geventhttpclient/default.nix
index 230d8f300e29..3e9c51c7dcd1 100644
--- a/pkgs/development/python-modules/geventhttpclient/default.nix
+++ b/pkgs/development/python-modules/geventhttpclient/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
   ];
 
   # lots of: [Errno 48] Address already in use: ('127.0.0.1', 54323)
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/development/python-modules/glean-sdk/default.nix b/pkgs/development/python-modules/glean-sdk/default.nix
index 5dea3e473665..11b7157f4b12 100644
--- a/pkgs/development/python-modules/glean-sdk/default.nix
+++ b/pkgs/development/python-modules/glean-sdk/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "glean" ];
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Telemetry client libraries and are a part of the Glean project";
     homepage = "https://mozilla.github.io/glean/book/index.html";
     license = lib.licenses.mpl20;
diff --git a/pkgs/development/python-modules/glymur/default.nix b/pkgs/development/python-modules/glymur/default.nix
index f54ccc14df0c..b9a37779603c 100644
--- a/pkgs/development/python-modules/glymur/default.nix
+++ b/pkgs/development/python-modules/glymur/default.nix
@@ -37,12 +37,12 @@ buildPythonPackage rec {
     })
   ];
 
-  postPatch = lib.optionalString (!stdenv.isDarwin) ''
+  postPatch = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     substituteInPlace glymur/lib/tiff.py \
         --replace-fail "glymur_config('c')" "ctypes.CDLL('${lib.getLib glibc}/lib/libc.so.6')"
   '';
 
-  __propagatedImpureHostDeps = lib.optional stdenv.isDarwin "/usr/lib/libc.dylib";
+  __propagatedImpureHostDeps = lib.optional stdenv.hostPlatform.isDarwin "/usr/lib/libc.dylib";
 
   build-system = [ setuptools ];
 
diff --git a/pkgs/development/python-modules/gmpy2/default.nix b/pkgs/development/python-modules/gmpy2/default.nix
index 58f4cc08f672..713cb42faef8 100644
--- a/pkgs/development/python-modules/gmpy2/default.nix
+++ b/pkgs/development/python-modules/gmpy2/default.nix
@@ -52,12 +52,12 @@ buildPythonPackage rec {
   ];
 
   disabledTests =
-    lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       # issue with some overflow logic
       "test_mpz_to_bytes"
       "test_mpz_from_bytes"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # TypeError: mpq() requires numeric or string argument
       # not sure why it only fails on Darwin
       "test_mpq_from_Decimal"
diff --git a/pkgs/development/python-modules/google-auth-oauthlib/default.nix b/pkgs/development/python-modules/google-auth-oauthlib/default.nix
index 3f1b3a06d0d4..2d4e0bed73ac 100644
--- a/pkgs/development/python-modules/google-auth-oauthlib/default.nix
+++ b/pkgs/development/python-modules/google-auth-oauthlib/default.nix
@@ -46,7 +46,7 @@ buildPythonPackage rec {
       # Flaky test. See https://github.com/NixOS/nixpkgs/issues/288424#issuecomment-1941609973.
       "test_run_local_server_occupied_port"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # This test fails if the hostname is not associated with an IP (e.g., in `/etc/hosts`).
       "test_run_local_server_bind_addr"
     ];
diff --git a/pkgs/development/python-modules/google-auth/default.nix b/pkgs/development/python-modules/google-auth/default.nix
index 5556429082f1..30ea8208ff8e 100644
--- a/pkgs/development/python-modules/google-auth/default.nix
+++ b/pkgs/development/python-modules/google-auth/default.nix
@@ -84,7 +84,7 @@ buildPythonPackage rec {
     "google.oauth2"
   ];
 
-  disabledTestPaths = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  disabledTestPaths = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     # Disable tests using pyOpenSSL as it does not build on M1 Macs
     "tests/transport/test__mtls_helper.py"
     "tests/transport/test_requests.py"
diff --git a/pkgs/development/python-modules/gpy/default.nix b/pkgs/development/python-modules/gpy/default.nix
index f0a7efc0005f..9bca05da8e5a 100644
--- a/pkgs/development/python-modules/gpy/default.nix
+++ b/pkgs/development/python-modules/gpy/default.nix
@@ -51,7 +51,7 @@ buildPythonPackage rec {
     done
   '';
 
-  disabledTests = lib.optionals (stdenv.isDarwin && stdenv.hostPlatform.isx86_64) [
+  disabledTests = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     # Rounding difference break comparison
     "TestGradientMultiOutputGPModel"
   ];
diff --git a/pkgs/development/python-modules/gradio/client.nix b/pkgs/development/python-modules/gradio/client.nix
index 327a242a6a21..d07f962b2668 100644
--- a/pkgs/development/python-modules/gradio/client.nix
+++ b/pkgs/development/python-modules/gradio/client.nix
@@ -92,7 +92,7 @@ buildPythonPackage rec {
     #"-x" "-W" "ignore" # uncomment for debugging help
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # flaky: OSError: Cannot find empty port in range: 7860-7959
     "test_layout_components_in_output"
     "test_layout_and_state_components_in_output"
diff --git a/pkgs/development/python-modules/gradio/default.nix b/pkgs/development/python-modules/gradio/default.nix
index f805f52cb106..68d0da3d5660 100644
--- a/pkgs/development/python-modules/gradio/default.nix
+++ b/pkgs/development/python-modules/gradio/default.nix
@@ -160,7 +160,7 @@ buildPythonPackage rec {
       export HOME=$TMPDIR
       cat ${./conftest-skip-network-errors.py} >> test/conftest.py
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # OSError: [Errno 24] Too many open files
       ulimit -n 4096
     '';
@@ -195,7 +195,7 @@ buildPythonPackage rec {
 
     # tests if pip and other tools are installed
     "test_get_executable_path"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # flaky on darwin (depend on port availability)
     "test_all_status_messages"
     "test_async_generators"
diff --git a/pkgs/development/python-modules/graphene-django/default.nix b/pkgs/development/python-modules/graphene-django/default.nix
index 254b2ae16a53..2ebc4dbfe9a2 100644
--- a/pkgs/development/python-modules/graphene-django/default.nix
+++ b/pkgs/development/python-modules/graphene-django/default.nix
@@ -69,7 +69,7 @@ buildPythonPackage rec {
       "test_should_multiplechoicefield_convert_to_list_of_enum"
       "test_perform_mutate_success_with_enum_choice_field"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # this test touches files in the "/" directory and fails in darwin sandbox
       "test_should_filepath_convert_string"
     ];
diff --git a/pkgs/development/python-modules/graphviz/default.nix b/pkgs/development/python-modules/graphviz/default.nix
index 2bf0cfe01c11..7ce60f9f06ff 100644
--- a/pkgs/development/python-modules/graphviz/default.nix
+++ b/pkgs/development/python-modules/graphviz/default.nix
@@ -63,7 +63,7 @@ buildPythonPackage rec {
   '';
 
   # Too many failures due to attempting to connect to com.apple.fonts daemon
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Simple Python interface for Graphviz";
diff --git a/pkgs/development/python-modules/greeclimate/default.nix b/pkgs/development/python-modules/greeclimate/default.nix
index 3970ef993cb5..50aa51e82e92 100644
--- a/pkgs/development/python-modules/greeclimate/default.nix
+++ b/pkgs/development/python-modules/greeclimate/default.nix
@@ -63,7 +63,7 @@ buildPythonPackage rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Discover, connect and control Gree based minisplit systems";
     homepage = "https://github.com/cmroche/greeclimate";
     changelog = "https://github.com/cmroche/greeclimate/blob/${src.rev}/CHANGELOG.md";
diff --git a/pkgs/development/python-modules/grpcio/default.nix b/pkgs/development/python-modules/grpcio/default.nix
index 44c591d783a2..5dc26d50be2b 100644
--- a/pkgs/development/python-modules/grpcio/default.nix
+++ b/pkgs/development/python-modules/grpcio/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
         GRPC_PYTHON_BUILD_EXT_COMPILER_JOBS=1
       fi
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       unset AR
     '';
 
diff --git a/pkgs/development/python-modules/gssapi/default.nix b/pkgs/development/python-modules/gssapi/default.nix
index 08683996db8d..525cfa3208a6 100644
--- a/pkgs/development/python-modules/gssapi/default.nix
+++ b/pkgs/development/python-modules/gssapi/default.nix
@@ -53,10 +53,10 @@ buildPythonPackage rec {
 
   dependencies = [ decorator ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ GSS ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ GSS ];
 
   # k5test is marked as broken on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   nativeCheckInputs = [
     k5test
diff --git a/pkgs/development/python-modules/gumath/default.nix b/pkgs/development/python-modules/gumath/default.nix
index 83b45412b0ff..f478acffb27e 100644
--- a/pkgs/development/python-modules/gumath/default.nix
+++ b/pkgs/development/python-modules/gumath/default.nix
@@ -50,7 +50,7 @@ buildPythonPackage {
                 'add_runtime_library_dirs = ["${libndtypes}/lib", "${libxnd}/lib", "${libgumath}/lib"]'
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -add_rpath ${libgumath}/lib $out/${python.sitePackages}/gumath/_gumath.*.so
   '';
 
diff --git a/pkgs/development/python-modules/gymnasium/default.nix b/pkgs/development/python-modules/gymnasium/default.nix
index 5cb114c51490..d7642559e537 100644
--- a/pkgs/development/python-modules/gymnasium/default.nix
+++ b/pkgs/development/python-modules/gymnasium/default.nix
@@ -66,7 +66,7 @@ buildPythonPackage rec {
   # marked as broken and throws an error during evaluation if the package is evaluated anyway.
   # disabling checks on Darwin avoids this and allows the package to be built.
   # if jaxlib is ever fixed on Darwin, remove this.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   disabledTestPaths = [
     # mujoco is required for those tests but the mujoco python bindings are not packaged in nixpkgs.
diff --git a/pkgs/development/python-modules/gyp/default.nix b/pkgs/development/python-modules/gyp/default.nix
index ad9fb88eb7ba..b8d52cd944c4 100644
--- a/pkgs/development/python-modules/gyp/default.nix
+++ b/pkgs/development/python-modules/gyp/default.nix
@@ -18,7 +18,7 @@ buildPythonPackage {
     hash = "sha256-LUlF2VhRnuDwJLdITgmXIQV/IuKdx1KXQkiPVHKrl4Q=";
   };
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     ./no-darwin-cflags.patch
     ./no-xcode.patch
   ];
diff --git a/pkgs/development/python-modules/hfst/default.nix b/pkgs/development/python-modules/hfst/default.nix
index 06e2ed94bb03..37869ffad3e3 100644
--- a/pkgs/development/python-modules/hfst/default.nix
+++ b/pkgs/development/python-modules/hfst/default.nix
@@ -30,7 +30,7 @@ buildPythonPackage rec {
   setupPyBuildFlags = [ "--inplace" ];
 
   # Find foma in Darwin tests
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export DYLD_LIBRARY_PATH="${foma}/lib"
   '';
 
diff --git a/pkgs/development/python-modules/hidapi/default.nix b/pkgs/development/python-modules/hidapi/default.nix
index ee69705614c9..976961d2164b 100644
--- a/pkgs/development/python-modules/hidapi/default.nix
+++ b/pkgs/development/python-modules/hidapi/default.nix
@@ -20,14 +20,14 @@ buildPythonPackage rec {
     sha256 = "sha256-bA6XumsFmjCdUbSVqPDV77zqh1a2QNmLb2u5/e8kWKw=";
   };
 
-  nativeBuildInputs = [ cython_0 ] ++ lib.optionals stdenv.isDarwin [ xcbuild ];
+  nativeBuildInputs = [ cython_0 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcbuild ];
 
   propagatedBuildInputs =
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       libusb1
       udev
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         AppKit
@@ -37,7 +37,7 @@ buildPythonPackage rec {
     );
 
   # Fix the USB backend library lookup
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     libusb=${libusb1.dev}/include/libusb-1.0
     test -d $libusb || { echo "ERROR: $libusb doesn't exist, please update/fix this build expression."; exit 1; }
     sed -i -e "s|/usr/include/libusb-1.0|$libusb|" setup.py
diff --git a/pkgs/development/python-modules/httpie/default.nix b/pkgs/development/python-modules/httpie/default.nix
index 5370a1e87009..86b4e4e51224 100644
--- a/pkgs/development/python-modules/httpie/default.nix
+++ b/pkgs/development/python-modules/httpie/default.nix
@@ -102,7 +102,7 @@ buildPythonPackage rec {
       "test_binary_suppresses_when_not_terminal_but_pretty"
       "test_binary_included_and_correct_when_suitable"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Test is flaky
       "test_daemon_runner"
     ];
diff --git a/pkgs/development/python-modules/httplib2/default.nix b/pkgs/development/python-modules/httplib2/default.nix
index 67e38601cfa5..a6c3e42a5317 100644
--- a/pkgs/development/python-modules/httplib2/default.nix
+++ b/pkgs/development/python-modules/httplib2/default.nix
@@ -57,7 +57,7 @@ buildPythonPackage rec {
       "test_head_301"
       "test_303"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # fails with "ConnectionResetError: [Errno 54] Connection reset by peer"
       "test_connection_close"
       # fails with HTTP 408 Request Timeout, instead of expected 200 OK
diff --git a/pkgs/development/python-modules/httpx/default.nix b/pkgs/development/python-modules/httpx/default.nix
index 4d4c264ea015..eb91fa3fce1e 100644
--- a/pkgs/development/python-modules/httpx/default.nix
+++ b/pkgs/development/python-modules/httpx/default.nix
@@ -68,7 +68,7 @@ buildPythonPackage rec {
   };
 
   # trustme uses pyopenssl
-  doCheck = !(stdenv.isDarwin && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64);
 
   nativeCheckInputs = [
     chardet
diff --git a/pkgs/development/python-modules/hupper/default.nix b/pkgs/development/python-modules/hupper/default.nix
index a7a6525e942d..ec9ccf3e65c8 100644
--- a/pkgs/development/python-modules/hupper/default.nix
+++ b/pkgs/development/python-modules/hupper/default.nix
@@ -19,7 +19,7 @@ buildPythonPackage rec {
 
   # FIXME: watchdog dependency is disabled on Darwin because of #31865, which causes very silent
   # segfaults in the testsuite that end up failing the tests in a background thread (in myapp)
-  nativeCheckInputs = [ pytestCheckHook ] ++ lib.optionals (!stdenv.isDarwin) [ watchdog ];
+  nativeCheckInputs = [ pytestCheckHook ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ watchdog ];
 
   disabledTestPaths = [
     # Doesn't work with an exported home, RuntimeError: timeout waiting for change to file=/build/tmpgfn145cx
diff --git a/pkgs/development/python-modules/ifcopenshell/default.nix b/pkgs/development/python-modules/ifcopenshell/default.nix
index 6e17149079cf..f9b1fb66ec20 100644
--- a/pkgs/development/python-modules/ifcopenshell/default.nix
+++ b/pkgs/development/python-modules/ifcopenshell/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Open source IFC library and geometry engine";
     homepage = "http://ifcopenshell.org/";
     license = licenses.lgpl3;
diff --git a/pkgs/development/python-modules/ignite/default.nix b/pkgs/development/python-modules/ignite/default.nix
index 8d6145d9ad84..26009c97d47e 100644
--- a/pkgs/development/python-modules/ignite/default.nix
+++ b/pkgs/development/python-modules/ignite/default.nix
@@ -97,6 +97,6 @@ buildPythonPackage rec {
     license = lib.licenses.bsd3;
     maintainers = [ lib.maintainers.bcdarwin ];
     # ModuleNotFoundError: No module named 'torch._C._distributed_c10d'; 'torch._C' is not a package
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/imagecodecs-lite/default.nix b/pkgs/development/python-modules/imagecodecs-lite/default.nix
index cca83672a31d..5bca6d350d59 100644
--- a/pkgs/development/python-modules/imagecodecs-lite/default.nix
+++ b/pkgs/development/python-modules/imagecodecs-lite/default.nix
@@ -29,7 +29,7 @@ buildPythonPackage rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
     description = "Block-oriented, in-memory buffer transformation, compression, and decompression functions";
     homepage = "https://www.lfd.uci.edu/~gohlke/";
     maintainers = [ maintainers.tbenst ];
diff --git a/pkgs/development/python-modules/imageio/default.nix b/pkgs/development/python-modules/imageio/default.nix
index 145d08730fe4..47018744c6b4 100644
--- a/pkgs/development/python-modules/imageio/default.nix
+++ b/pkgs/development/python-modules/imageio/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
     hash = "sha256-WeoZE2TPBAhzBBcZNQqoiqvribMCLSZWk/XpdMydvCQ=";
   };
 
-  patches = lib.optionals (!stdenv.isDarwin) [
+  patches = lib.optionals (!stdenv.hostPlatform.isDarwin) [
     (substituteAll {
       src = ./libgl-path.patch;
       libgl = "${libGL.out}/lib/libGL${stdenv.hostPlatform.extensions.sharedLibrary}";
@@ -100,7 +100,7 @@ buildPythonPackage rec {
     "tests/test_swf.py"
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # Segmentation fault
     "test_bayer_write"
     # RuntimeError: No valid H.264 encoder was found with the ffmpeg installation
diff --git a/pkgs/development/python-modules/img2pdf/default.nix b/pkgs/development/python-modules/img2pdf/default.nix
index 1a887a87d29b..afb95dafebd6 100644
--- a/pkgs/development/python-modules/img2pdf/default.nix
+++ b/pkgs/development/python-modules/img2pdf/default.nix
@@ -41,7 +41,7 @@ buildPythonPackage rec {
     (substituteAll {
       src = ./default-icc-profile.patch;
       srgbProfile =
-        if stdenv.isDarwin then
+        if stdenv.hostPlatform.isDarwin then
           "/System/Library/ColorSync/Profiles/sRGB Profile.icc"
         else
           # break runtime dependency chain all of colord dependencies
@@ -65,7 +65,7 @@ buildPythonPackage rec {
 
   # FIXME: Only add "sRGB Profile.icc" to __impureHostDeps once
   # https://github.com/NixOS/nix/issues/9301 is fixed.
-  __impureHostDeps = lib.optionals stdenv.isDarwin [ "/System/Library/ColorSync/Profiles" ];
+  __impureHostDeps = lib.optionals stdenv.hostPlatform.isDarwin [ "/System/Library/ColorSync/Profiles" ];
 
   nativeCheckInputs = [
     exiftool
diff --git a/pkgs/development/python-modules/inkex/default.nix b/pkgs/development/python-modules/inkex/default.nix
index c796a0136953..2435c7e46786 100644
--- a/pkgs/development/python-modules/inkex/default.nix
+++ b/pkgs/development/python-modules/inkex/default.nix
@@ -68,7 +68,7 @@ buildPythonPackage {
       "test_extract_multiple"
       "test_lookup_and"
     ]
-    ++ lib.optional stdenv.isDarwin [
+    ++ lib.optional stdenv.hostPlatform.isDarwin [
       "test_image_extract"
       "test_path_number_nodes"
       "test_plotter" # Hangs
diff --git a/pkgs/development/python-modules/intake/default.nix b/pkgs/development/python-modules/intake/default.nix
index 80907730ffcf..2b1fefe90750 100644
--- a/pkgs/development/python-modules/intake/default.nix
+++ b/pkgs/development/python-modules/intake/default.nix
@@ -124,7 +124,7 @@ buildPythonPackage rec {
       # Timing-based, flaky on darwin and possibly others
       "test_idle_timer"
     ]
-    ++ lib.optionals (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13")
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13")
       [
         # Flaky with older low-res mtime on darwin < 10.13 (#143987)
         "test_second_load_timestamp"
diff --git a/pkgs/development/python-modules/invisible-watermark/default.nix b/pkgs/development/python-modules/invisible-watermark/default.nix
index 968669ec92bc..67652922d62a 100644
--- a/pkgs/development/python-modules/invisible-watermark/default.nix
+++ b/pkgs/development/python-modules/invisible-watermark/default.nix
@@ -72,7 +72,7 @@ buildPythonPackage rec {
         let
           testName = "${if withOnnx then "withOnnx" else "withoutOnnx"}-${method}";
           # This test fails in the sandbox on aarch64-linux, see https://github.com/microsoft/onnxruntime/issues/10038
-          skipTest = stdenv.isLinux && stdenv.isAarch64 && withOnnx && method == "rivaGan";
+          skipTest = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64 && withOnnx && method == "rivaGan";
         in
         lib.optionalAttrs (!skipTest) {
           "${testName}" = callPackage ./tests/cli.nix {
diff --git a/pkgs/development/python-modules/ipwhois/default.nix b/pkgs/development/python-modules/ipwhois/default.nix
index bd69e5ccd514..ea8fa078833d 100644
--- a/pkgs/development/python-modules/ipwhois/default.nix
+++ b/pkgs/development/python-modules/ipwhois/default.nix
@@ -49,7 +49,7 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "ipwhois" ];
 
-  preCheck = lib.optionalString stdenv.isLinux ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isLinux ''
     echo "nameserver 127.0.0.1" > resolv.conf
     export NIX_REDIRECTS=/etc/protocols=${iana-etc}/etc/protocols:/etc/resolv.conf=$(realpath resolv.conf) \
       LD_PRELOAD=${libredirect}/lib/libredirect.so
diff --git a/pkgs/development/python-modules/ipykernel/default.nix b/pkgs/development/python-modules/ipykernel/default.nix
index dabad2fa8e13..4da948088c9a 100644
--- a/pkgs/development/python-modules/ipykernel/default.nix
+++ b/pkgs/development/python-modules/ipykernel/default.nix
@@ -52,7 +52,7 @@ buildPythonPackage rec {
     pyzmq
     tornado
     traitlets
-  ] ++ lib.optionals stdenv.isDarwin [ appnope ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ appnope ];
 
   # check in passthru.tests.pytest to escape infinite recursion with ipyparallel
   doCheck = false;
diff --git a/pkgs/development/python-modules/ipykernel/tests.nix b/pkgs/development/python-modules/ipykernel/tests.nix
index 4d96d4c6787d..89ac0be2d3d6 100644
--- a/pkgs/development/python-modules/ipykernel/tests.nix
+++ b/pkgs/development/python-modules/ipykernel/tests.nix
@@ -46,7 +46,7 @@ buildPythonPackage {
       # traitlets.config.configurable.MultipleInstanceError: An incompatible siblin...
       "test_install_kernelspec"
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       [
         # see https://github.com/NixOS/nixpkgs/issues/76197
         "test_subprocess_print"
diff --git a/pkgs/development/python-modules/ipython/default.nix b/pkgs/development/python-modules/ipython/default.nix
index e13f14a2411e..077ea0e4ac10 100644
--- a/pkgs/development/python-modules/ipython/default.nix
+++ b/pkgs/development/python-modules/ipython/default.nix
@@ -102,7 +102,7 @@ buildPythonPackage rec {
       # UnboundLocalError: local variable 'child' referenced before assignment
       "test_system_interrupt"
     ]
-    ++ lib.optionals (stdenv.isDarwin) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
       # FileNotFoundError: [Errno 2] No such file or directory: 'pbpaste'
       "test_clipboard_get"
     ];
diff --git a/pkgs/development/python-modules/jaraco-net/default.nix b/pkgs/development/python-modules/jaraco-net/default.nix
index c5554812cbe8..de22f3eda857 100644
--- a/pkgs/development/python-modules/jaraco-net/default.nix
+++ b/pkgs/development/python-modules/jaraco-net/default.nix
@@ -68,7 +68,7 @@ buildPythonPackage rec {
     python-dateutil
     pathvalidate
     jsonpickle
-  ] ++ lib.optionals stdenv.isDarwin [ ifconfig-parser ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ ifconfig-parser ];
 
   pythonImportsCheck = [ "jaraco.net" ];
 
@@ -78,7 +78,7 @@ buildPythonPackage rec {
     importlib-resources
     pyparsing
     requests-mock
-  ] ++ lib.optionals stdenv.isDarwin [ nettools ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ nettools ];
 
   disabledTestPaths = [
     # doesn't actually contain tests
diff --git a/pkgs/development/python-modules/jaraco-path/default.nix b/pkgs/development/python-modules/jaraco-path/default.nix
index 5537811d592d..48ee8b4fdd2b 100644
--- a/pkgs/development/python-modules/jaraco-path/default.nix
+++ b/pkgs/development/python-modules/jaraco-path/default.nix
@@ -31,6 +31,6 @@ buildPythonPackage rec {
     homepage = "https://github.com/jaraco/jaraco.path";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ dotlambda ];
-    broken = stdenv.isDarwin; # pyobjc is missing
+    broken = stdenv.hostPlatform.isDarwin; # pyobjc is missing
   };
 }
diff --git a/pkgs/development/python-modules/jax/default.nix b/pkgs/development/python-modules/jax/default.nix
index ec8c53daab46..ba9a621b1eab 100644
--- a/pkgs/development/python-modules/jax/default.nix
+++ b/pkgs/development/python-modules/jax/default.nix
@@ -81,7 +81,7 @@ buildPythonPackage rec {
   # PermissionError: [Errno 13] Permission denied: '/tmp/back_compat_testdata/test_*.py'
   # See https://github.com/google/jax/blob/jaxlib-v0.4.27/jax/_src/internal_test_util/export_back_compat_test_util.py#L240-L241
   # NOTE: this doesn't seem to be an issue on linux
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export TEST_UNDECLARED_OUTPUTS_DIR=$(mktemp -d)
   '';
 
@@ -108,7 +108,7 @@ buildPythonPackage rec {
       "test_custom_root_with_aux"
       "testEigvalsGrad_shape"
     ]
-    ++ lib.optionals stdenv.isAarch64 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [
       # See https://github.com/google/jax/issues/14793.
       "test_for_loop_fixpoint_correctly_identifies_loop_varying_residuals_unrolled_for_loop"
       "testQdwhWithRandomMatrix3"
@@ -131,7 +131,7 @@ buildPythonPackage rec {
     # Segmentation fault. See https://gist.github.com/zimbatm/e9b61891f3bcf5e4aaefd13f94344fba
     "tests/linalg_test.py"
   ]
-  ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     # RuntimeWarning: invalid value encountered in cast
     "tests/lax_test.py"
   ];
diff --git a/pkgs/development/python-modules/jaxlib/bin.nix b/pkgs/development/python-modules/jaxlib/bin.nix
index 3104cee90e1c..a08264849770 100644
--- a/pkgs/development/python-modules/jaxlib/bin.nix
+++ b/pkgs/development/python-modules/jaxlib/bin.nix
@@ -186,7 +186,7 @@ buildPythonPackage {
   # Prebuilt wheels are dynamically linked against things that nix can't find.
   # Run `autoPatchelfHook` to automagically fix them.
   nativeBuildInputs =
-    lib.optionals stdenv.isLinux [ autoPatchelfHook ]
+    lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ]
     ++ lib.optionals cudaSupport [ autoAddDriverRunpath ];
   # Dynamic link dependencies
   buildInputs = [ stdenv.cc.cc.lib ];
@@ -238,12 +238,12 @@ buildPythonPackage {
     broken =
       !(cudaSupport -> lib.versionAtLeast cudaVersion "11.1")
       || !(cudaSupport -> lib.versionAtLeast cudaPackages.cudnn.version "8.2")
-      || !(cudaSupport -> stdenv.isLinux)
+      || !(cudaSupport -> stdenv.hostPlatform.isLinux)
       || !(cudaSupport -> (gpuSrcs ? "cuda${cudaVersion}-${pythonVersion}"))
       # Fails at pythonImportsCheckPhase:
       # ...-python-imports-check-hook.sh/nix-support/setup-hook: line 10: 28017 Illegal instruction: 4
       # /nix/store/5qpssbvkzfh73xih07xgmpkj5r565975-python3-3.11.9/bin/python3.11 -c
       # 'import os; import importlib; list(map(lambda mod: importlib.import_module(mod), os.environ["pythonImportsCheck"].split()))'
-      || (stdenv.isDarwin && stdenv.isx86_64);
+      || (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64);
   };
 }
diff --git a/pkgs/development/python-modules/jaxlib/default.nix b/pkgs/development/python-modules/jaxlib/default.nix
index 0fc50fa9243f..de7fea0a26e8 100644
--- a/pkgs/development/python-modules/jaxlib/default.nix
+++ b/pkgs/development/python-modules/jaxlib/default.nix
@@ -240,7 +240,7 @@ let
       wheel
       build
       which
-    ] ++ lib.optionals effectiveStdenv.isDarwin [ cctools ];
+    ] ++ lib.optionals effectiveStdenv.hostPlatform.isDarwin [ cctools ];
 
     buildInputs =
       [
@@ -259,8 +259,8 @@ let
         snappy
         zlib
       ]
-      ++ lib.optionals effectiveStdenv.isDarwin [ IOKit ]
-      ++ lib.optionals (!effectiveStdenv.isDarwin) [ nsync ];
+      ++ lib.optionals effectiveStdenv.hostPlatform.isDarwin [ IOKit ]
+      ++ lib.optionals (!effectiveStdenv.hostPlatform.isDarwin) [ nsync ];
 
     # We don't want to be quite so picky regarding bazel version
     postPatch = ''
@@ -406,7 +406,7 @@ let
 
       TF_SYSTEM_LIBS = lib.concatStringsSep "," (
         tf_system_libs
-        ++ lib.optionals (!effectiveStdenv.isDarwin) [
+        ++ lib.optionals (!effectiveStdenv.hostPlatform.isDarwin) [
           "nsync" # fails to build on darwin
         ]
       );
@@ -414,7 +414,7 @@ let
       # Note: we cannot do most of this patching at `patch` phase as the deps
       # are not available yet. Framework search paths aren't added by bintools
       # hook. See https://github.com/NixOS/nixpkgs/pull/41914.
-      preBuild = lib.optionalString effectiveStdenv.isDarwin ''
+      preBuild = lib.optionalString effectiveStdenv.hostPlatform.isDarwin ''
         export NIX_LDFLAGS+=" -F${IOKit}/Library/Frameworks"
         substituteInPlace ../output/external/rules_cc/cc/private/toolchain/osx_cc_wrapper.sh.tpl \
           --replace "/usr/bin/install_name_tool" "${cctools}/bin/install_name_tool"
diff --git a/pkgs/development/python-modules/jaxopt/default.nix b/pkgs/development/python-modules/jaxopt/default.nix
index 8159533fc203..b617e21c1c27 100644
--- a/pkgs/development/python-modules/jaxopt/default.nix
+++ b/pkgs/development/python-modules/jaxopt/default.nix
@@ -75,7 +75,7 @@ buildPythonPackage rec {
       # https://github.com/google/jaxopt/issues/592
       "test_solve_sparse"
     ]
-    ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       # https://github.com/google/jaxopt/issues/577
       "test_binary_logit_log_likelihood"
       "test_solve_sparse"
@@ -87,7 +87,7 @@ buildPythonPackage rec {
       # AssertionError: Array(0.01411963, dtype=float32) not less than or equal to 0.01
       "test_multiclass_logreg6"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Fatal Python error: Aborted
       "test_dtype_consistency"
 
diff --git a/pkgs/development/python-modules/jedi-language-server/default.nix b/pkgs/development/python-modules/jedi-language-server/default.nix
index 096c327ae986..e67d04be02c1 100644
--- a/pkgs/development/python-modules/jedi-language-server/default.nix
+++ b/pkgs/development/python-modules/jedi-language-server/default.nix
@@ -49,7 +49,7 @@ buildPythonPackage rec {
     HOME="$(mktemp -d)"
   '';
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # https://github.com/pappasam/jedi-language-server/issues/313
     "test_publish_diagnostics_on_change"
     "test_publish_diagnostics_on_save"
diff --git a/pkgs/development/python-modules/jedi/default.nix b/pkgs/development/python-modules/jedi/default.nix
index ddc0caea5555..b88dc9311e91 100644
--- a/pkgs/development/python-modules/jedi/default.nix
+++ b/pkgs/development/python-modules/jedi/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
       # sensitive to platform, causes false negatives on darwin
       "test_import"
     ]
-    ++ lib.optionals (stdenv.isAarch64 && pythonOlder "3.9") [
+    ++ lib.optionals (stdenv.hostPlatform.isAarch64 && pythonOlder "3.9") [
       # AssertionError: assert 'foo' in ['setup']
       "test_init_extension_module"
     ]
diff --git a/pkgs/development/python-modules/jellyfish/default.nix b/pkgs/development/python-modules/jellyfish/default.nix
index 4210f5499d28..8517c239de44 100644
--- a/pkgs/development/python-modules/jellyfish/default.nix
+++ b/pkgs/development/python-modules/jellyfish/default.nix
@@ -28,7 +28,7 @@ buildPythonPackage rec {
     cargoSetupHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   cargoDeps = rustPlatform.fetchCargoTarball {
     inherit src;
diff --git a/pkgs/development/python-modules/jinja2/default.nix b/pkgs/development/python-modules/jinja2/default.nix
index da220641dbe2..ee1d27671b5d 100644
--- a/pkgs/development/python-modules/jinja2/default.nix
+++ b/pkgs/development/python-modules/jinja2/default.nix
@@ -41,7 +41,7 @@ buildPythonPackage rec {
 
   # Multiple tests run out of stack space on 32bit systems with python2.
   # See https://github.com/pallets/jinja/issues/1158
-  doCheck = !stdenv.is32bit;
+  doCheck = !stdenv.hostPlatform.is32bit;
 
   nativeCheckInputs = [ pytestCheckHook ] ++ passthru.optional-dependencies.i18n;
 
diff --git a/pkgs/development/python-modules/joblib/default.nix b/pkgs/development/python-modules/joblib/default.nix
index 65b728b34e9a..0cd4182d4241 100644
--- a/pkgs/development/python-modules/joblib/default.nix
+++ b/pkgs/development/python-modules/joblib/default.nix
@@ -51,7 +51,7 @@ buildPythonPackage rec {
       "test_parallel_call_cached_function_defined_in_jupyter" # jupyter not available during tests
       "test_nested_parallel_warnings" # tests is flaky under load
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_dispatch_multiprocessing" # test_dispatch_multiprocessing is broken only on Darwin.
     ]
     ++ lib.optionals (pythonAtLeast "3.12") [
diff --git a/pkgs/development/python-modules/johnnycanencrypt/default.nix b/pkgs/development/python-modules/johnnycanencrypt/default.nix
index 19d02b118987..a9d7009e07e9 100644
--- a/pkgs/development/python-modules/johnnycanencrypt/default.nix
+++ b/pkgs/development/python-modules/johnnycanencrypt/default.nix
@@ -47,8 +47,8 @@ buildPythonPackage rec {
 
   buildInputs =
     [ nettle ]
-    ++ lib.optionals stdenv.isLinux [ pcsclite ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ pcsclite ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       PCSC
       libiconv
     ];
diff --git a/pkgs/development/python-modules/json-stream-rs-tokenizer/default.nix b/pkgs/development/python-modules/json-stream-rs-tokenizer/default.nix
index 9a65903e384d..86473e609bfe 100644
--- a/pkgs/development/python-modules/json-stream-rs-tokenizer/default.nix
+++ b/pkgs/development/python-modules/json-stream-rs-tokenizer/default.nix
@@ -45,7 +45,7 @@ buildPythonPackage rec {
     wheel
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   # Tests depend on json-stream, which depends on this package.
   # To avoid infinite recursion, we only enable tests when building passthru.tests.
diff --git a/pkgs/development/python-modules/json-stream/default.nix b/pkgs/development/python-modules/json-stream/default.nix
index 26b7ef5f8ea2..fd5f61399f18 100644
--- a/pkgs/development/python-modules/json-stream/default.nix
+++ b/pkgs/development/python-modules/json-stream/default.nix
@@ -25,7 +25,7 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ setuptools ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ iconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ iconv ];
 
   propagatedBuildInputs = [
     requests
diff --git a/pkgs/development/python-modules/jsonstreams/default.nix b/pkgs/development/python-modules/jsonstreams/default.nix
index 58c3513e1ee0..49ffcee24b82 100644
--- a/pkgs/development/python-modules/jsonstreams/default.nix
+++ b/pkgs/development/python-modules/jsonstreams/default.nix
@@ -25,7 +25,7 @@ buildPythonPackage rec {
   pytestFlagsArray = [ "tests --doctest-modules jsonstreams" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "JSON streaming writer";
     homepage = "https://github.com/dcbaker/jsonstreams";
     license = licenses.mit;
diff --git a/pkgs/development/python-modules/jupyter-server/default.nix b/pkgs/development/python-modules/jupyter-server/default.nix
index a367bc3c0f35..071b3707225b 100644
--- a/pkgs/development/python-modules/jupyter-server/default.nix
+++ b/pkgs/development/python-modules/jupyter-server/default.nix
@@ -72,7 +72,7 @@ buildPythonPackage rec {
   ];
 
   # https://github.com/NixOS/nixpkgs/issues/299427
-  stripExclude = lib.optionals stdenv.isDarwin [ "favicon.ico" ];
+  stripExclude = lib.optionals stdenv.hostPlatform.isDarwin [ "favicon.ico" ];
 
   nativeCheckInputs = [
     ipykernel
@@ -102,13 +102,13 @@ buildPythonPackage rec {
       # test is presumable broken in sandbox
       "test_authorized_requests"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # attempts to use trashcan, build env doesn't allow this
       "test_delete"
       # Insufficient access privileges for operation
       "test_regression_is_hidden"
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       # Failed: DID NOT RAISE <class 'tornado.web.HTTPError'>
       "test_copy_big_dir"
     ];
diff --git a/pkgs/development/python-modules/jupyterhub/default.nix b/pkgs/development/python-modules/jupyterhub/default.nix
index 38a2fc97a662..76fbe01ae3d1 100644
--- a/pkgs/development/python-modules/jupyterhub/default.nix
+++ b/pkgs/development/python-modules/jupyterhub/default.nix
@@ -171,6 +171,6 @@ buildPythonPackage rec {
     license = licenses.bsd3;
     maintainers = teams.jupyter.members;
     # darwin: E   OSError: dlopen(/nix/store/43zml0mlr17r5jsagxr00xxx91hz9lky-openpam-20170430/lib/libpam.so, 6): image not found
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/jupytext/default.nix b/pkgs/development/python-modules/jupytext/default.nix
index 4708b5363141..df0fc676633f 100644
--- a/pkgs/development/python-modules/jupytext/default.nix
+++ b/pkgs/development/python-modules/jupytext/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
 
   disabledTestPaths = [ "tests/external" ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # requires access to trash
     "test_load_save_rename"
   ];
diff --git a/pkgs/development/python-modules/kaleido/default.nix b/pkgs/development/python-modules/kaleido/default.nix
index 9e9fff6af84d..ef889a0aa715 100644
--- a/pkgs/development/python-modules/kaleido/default.nix
+++ b/pkgs/development/python-modules/kaleido/default.nix
@@ -97,7 +97,7 @@ buildPythonPackage rec {
     #ln -s ${lato}/share/fonts/lato/* $out/${python.sitePackages}/kaleido/executable/xdg/fonts/truetype/lato/
   '';
 
-  passthru.tests = lib.optionalAttrs (!stdenv.isDarwin) {
+  passthru.tests = lib.optionalAttrs (!stdenv.hostPlatform.isDarwin) {
     kaleido = callPackage ./tests.nix { };
   };
 
diff --git a/pkgs/development/python-modules/keyring/default.nix b/pkgs/development/python-modules/keyring/default.nix
index d16fa7232c2c..45166fb322b2 100644
--- a/pkgs/development/python-modules/keyring/default.nix
+++ b/pkgs/development/python-modules/keyring/default.nix
@@ -43,7 +43,7 @@ buildPythonPackage rec {
       jaraco-context
       jaraco-functools
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       jeepney
       secretstorage
     ]
@@ -68,7 +68,7 @@ buildPythonPackage rec {
   disabledTestPaths =
     [ "tests/backends/test_macOS.py" ]
     # These tests fail when sandboxing is enabled because they are unable to get a password from keychain.
-    ++ lib.optional stdenv.isDarwin "tests/test_multiprocess.py";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "tests/test_multiprocess.py";
 
   meta = with lib; {
     description = "Store and access your passwords safely";
diff --git a/pkgs/development/python-modules/keyring_24/default.nix b/pkgs/development/python-modules/keyring_24/default.nix
index 9739a6f7b20a..05fbb3178147 100644
--- a/pkgs/development/python-modules/keyring_24/default.nix
+++ b/pkgs/development/python-modules/keyring_24/default.nix
@@ -46,7 +46,7 @@ buildPythonPackage rec {
       jaraco-context
       jaraco-functools
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       jeepney
       secretstorage
     ]
@@ -68,7 +68,7 @@ buildPythonPackage rec {
   disabledTestPaths =
     [ "tests/backends/test_macOS.py" ]
     # These tests fail when sandboxing is enabled because they are unable to get a password from keychain.
-    ++ lib.optional stdenv.isDarwin "tests/test_multiprocess.py";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "tests/test_multiprocess.py";
 
   meta = with lib; {
     description = "Store and access your passwords safely";
diff --git a/pkgs/development/python-modules/keystone-engine/default.nix b/pkgs/development/python-modules/keystone-engine/default.nix
index 61e27473ec98..4e526346dced 100644
--- a/pkgs/development/python-modules/keystone-engine/default.nix
+++ b/pkgs/development/python-modules/keystone-engine/default.nix
@@ -16,7 +16,7 @@ buildPythonPackage rec {
     sha256 = "1xahdr6bh3dw5swrc2r8kqa8ljhqlb7k2kxv5mrw5rhcmcnzcyig";
   };
 
-  setupPyBuildFlags = lib.optionals stdenv.isLinux [
+  setupPyBuildFlags = lib.optionals stdenv.hostPlatform.isLinux [
     "--plat-name"
     "linux"
   ];
diff --git a/pkgs/development/python-modules/kivy/default.nix b/pkgs/development/python-modules/kivy/default.nix
index f71c8288c74e..26a1bba38bce 100644
--- a/pkgs/development/python-modules/kivy/default.nix
+++ b/pkgs/development/python-modules/kivy/default.nix
@@ -49,11 +49,11 @@ buildPythonPackage rec {
       SDL2_ttf
       SDL2_mixer
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       mesa
       mtdev
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       Accelerate
       ApplicationServices
       AVFoundation
@@ -84,9 +84,9 @@ buildPythonPackage rec {
   # prefer pkg-config over hardcoded framework paths
   USE_OSX_FRAMEWORKS = 0;
   # work around python distutils compiling C++ with $CC (see issue #26709)
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace kivy/lib/mtdev.py \
       --replace "LoadLibrary('libmtdev.so.1')" "LoadLibrary('${mtdev}/lib/libmtdev.so.1')"
   '';
diff --git a/pkgs/development/python-modules/kiwisolver/default.nix b/pkgs/development/python-modules/kiwisolver/default.nix
index d71b613b58b8..24322524eb93 100644
--- a/pkgs/development/python-modules/kiwisolver/default.nix
+++ b/pkgs/development/python-modules/kiwisolver/default.nix
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     hash = "sha256-5X5WOlf7IqFC2jTziswvwaXIZLwpyhUXqIq8lj5g1uw=";
   };
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
 
   nativeBuildInputs = [ setuptools-scm ];
 
diff --git a/pkgs/development/python-modules/krb5/default.nix b/pkgs/development/python-modules/krb5/default.nix
index f64b73447ac0..42c4537bff42 100644
--- a/pkgs/development/python-modules/krb5/default.nix
+++ b/pkgs/development/python-modules/krb5/default.nix
@@ -43,6 +43,6 @@ buildPythonPackage rec {
     homepage = "https://github.com/jborean93/pykrb5";
     license = licenses.mit;
     maintainers = teams.deshaw.members;
-    broken = stdenv.isDarwin; # TODO: figure out how to build on Darwin
+    broken = stdenv.hostPlatform.isDarwin; # TODO: figure out how to build on Darwin
   };
 }
diff --git a/pkgs/development/python-modules/kubernetes/default.nix b/pkgs/development/python-modules/kubernetes/default.nix
index b7387675c954..66a295dcc5a7 100644
--- a/pkgs/development/python-modules/kubernetes/default.nix
+++ b/pkgs/development/python-modules/kubernetes/default.nix
@@ -60,7 +60,7 @@ buildPythonPackage rec {
     pytestCheckHook
   ] ++ lib.flatten (builtins.attrValues optional-dependencies);
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # AssertionError: <class 'urllib3.poolmanager.ProxyManager'> != <class 'urllib3.poolmanager.Poolmanager'>
     "test_rest_proxycare"
   ];
diff --git a/pkgs/development/python-modules/lancedb/default.nix b/pkgs/development/python-modules/lancedb/default.nix
index bf2f407be877..e1dcbd2a1a22 100644
--- a/pkgs/development/python-modules/lancedb/default.nix
+++ b/pkgs/development/python-modules/lancedb/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
       libiconv
       protobuf
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         IOKit
diff --git a/pkgs/development/python-modules/langchain-core/default.nix b/pkgs/development/python-modules/langchain-core/default.nix
index a29bf68137a1..0c3564d0f113 100644
--- a/pkgs/development/python-modules/langchain-core/default.nix
+++ b/pkgs/development/python-modules/langchain-core/default.nix
@@ -118,7 +118,7 @@ buildPythonPackage rec {
       "test_chat_prompt_template_variable_names"
       "test_create_model_v2"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Langchain-core the following tests due to the test comparing execution time with magic values.
       "test_queue_for_streaming_via_sync_call"
       "test_same_event_loop"
diff --git a/pkgs/development/python-modules/langgraph-checkpoint-postgres/default.nix b/pkgs/development/python-modules/langgraph-checkpoint-postgres/default.nix
index adcd0856f027..7d511994b6d5 100644
--- a/pkgs/development/python-modules/langgraph-checkpoint-postgres/default.nix
+++ b/pkgs/development/python-modules/langgraph-checkpoint-postgres/default.nix
@@ -48,7 +48,7 @@ buildPythonPackage rec {
 
   pythonRelaxDeps = [ "psycopg-pool" ];
 
-  doCheck = !(stdenvNoCC.isDarwin);
+  doCheck = !(stdenvNoCC.hostPlatform.isDarwin);
 
   pythonImportsCheck = [ "langgraph.checkpoint.postgres" ];
 
diff --git a/pkgs/development/python-modules/langgraph/default.nix b/pkgs/development/python-modules/langgraph/default.nix
index 80e2faa68258..087db330d195 100644
--- a/pkgs/development/python-modules/langgraph/default.nix
+++ b/pkgs/development/python-modules/langgraph/default.nix
@@ -64,7 +64,7 @@ buildPythonPackage rec {
 
   # postgresql doesn't play nicely with the darwin sandbox:
   # FATAL:  could not create shared memory segment: Operation not permitted
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   nativeCheckInputs = [
     aiosqlite
diff --git a/pkgs/development/python-modules/langsmith/default.nix b/pkgs/development/python-modules/langsmith/default.nix
index f7bd15615c85..5ce0f9c33367 100644
--- a/pkgs/development/python-modules/langsmith/default.nix
+++ b/pkgs/development/python-modules/langsmith/default.nix
@@ -59,7 +59,7 @@ buildPythonPackage rec {
     pytest-asyncio
     pytestCheckHook
     uvicorn
-  ] ++ lib.optionals stdenv.isLinux [ attr ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ attr ];
 
   disabledTests = [
     # These tests require network access
diff --git a/pkgs/development/python-modules/ledgerblue/default.nix b/pkgs/development/python-modules/ledgerblue/default.nix
index 5010d8153032..4885fa14524e 100644
--- a/pkgs/development/python-modules/ledgerblue/default.nix
+++ b/pkgs/development/python-modules/ledgerblue/default.nix
@@ -53,7 +53,7 @@ buildPythonPackage rec {
     python-gnupg
     python-u2flib-host
     websocket-client
-  ] ++ lib.optionals stdenv.isLinux [ bleak ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ bleak ];
 
   # No tests
   doCheck = false;
diff --git a/pkgs/development/python-modules/ledgerwallet/default.nix b/pkgs/development/python-modules/ledgerwallet/default.nix
index 8afa1ea14cb5..0cbc048ee670 100644
--- a/pkgs/development/python-modules/ledgerwallet/default.nix
+++ b/pkgs/development/python-modules/ledgerwallet/default.nix
@@ -34,7 +34,7 @@ buildPythonPackage rec {
   buildInputs = [
     setuptools
     setuptools-scm
-  ] ++ lib.optionals stdenv.isDarwin [ AppKit ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ];
   propagatedBuildInputs = [
     cryptography
     click
diff --git a/pkgs/development/python-modules/libasyncns/default.nix b/pkgs/development/python-modules/libasyncns/default.nix
index 730d1a9217d5..b81e67f8f926 100644
--- a/pkgs/development/python-modules/libasyncns/default.nix
+++ b/pkgs/development/python-modules/libasyncns/default.nix
@@ -18,7 +18,7 @@ buildPythonPackage rec {
 
   patches = [ ./libasyncns-fix-res-consts.patch ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace resquery.c \
       --replace '<arpa/nameser.h>' '<arpa/nameser_compat.h>'
   '';
diff --git a/pkgs/development/python-modules/libcst/default.nix b/pkgs/development/python-modules/libcst/default.nix
index a0863f9bfd1c..3ccf4c8e12fb 100644
--- a/pkgs/development/python-modules/libcst/default.nix
+++ b/pkgs/development/python-modules/libcst/default.nix
@@ -55,7 +55,7 @@ buildPythonPackage rec {
     rustc
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   dependencies = [
     typing-extensions
diff --git a/pkgs/development/python-modules/librosa/default.nix b/pkgs/development/python-modules/librosa/default.nix
index 9b015e335b75..fa0c17487d33 100644
--- a/pkgs/development/python-modules/librosa/default.nix
+++ b/pkgs/development/python-modules/librosa/default.nix
@@ -106,7 +106,7 @@ buildPythonPackage rec {
       "test_cite_badversion"
       "test_cite_unreleased"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # crashing the python interpreter
       "test_unknown_time_unit"
       "test_unknown_wavaxis"
diff --git a/pkgs/development/python-modules/libtmux/default.nix b/pkgs/development/python-modules/libtmux/default.nix
index 0bb5cb5cda28..917b20ef077f 100644
--- a/pkgs/development/python-modules/libtmux/default.nix
+++ b/pkgs/development/python-modules/libtmux/default.nix
@@ -47,12 +47,12 @@ buildPythonPackage rec {
       # Assertion error
       "test_capture_pane_start"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # tests/test_pane.py:113: AssertionError
       "test_capture_pane_start"
     ];
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     "tests/test_test.py"
   ];
 
diff --git a/pkgs/development/python-modules/lightgbm/default.nix b/pkgs/development/python-modules/lightgbm/default.nix
index 6e07d603b1b4..5c52a7350741 100644
--- a/pkgs/development/python-modules/lightgbm/default.nix
+++ b/pkgs/development/python-modules/lightgbm/default.nix
@@ -29,7 +29,7 @@
   boost,
   ocl-icd,
   opencl-headers,
-  gpuSupport ? stdenv.isLinux && !cudaSupport,
+  gpuSupport ? stdenv.hostPlatform.isLinux && !cudaSupport,
   cudaSupport ? config.cudaSupport,
   cudaPackages,
 }:
diff --git a/pkgs/development/python-modules/llfuse/default.nix b/pkgs/development/python-modules/llfuse/default.nix
index 4fa525fa4db2..a110a8082c14 100644
--- a/pkgs/development/python-modules/llfuse/default.nix
+++ b/pkgs/development/python-modules/llfuse/default.nix
@@ -46,7 +46,7 @@ buildPythonPackage rec {
   '';
 
   # On Darwin, the test requires macFUSE to be installed outside of Nix.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   nativeCheckInputs = [
     pytestCheckHook
     which
diff --git a/pkgs/development/python-modules/llvmlite/default.nix b/pkgs/development/python-modules/llvmlite/default.nix
index 9d76e64fde35..19941cd4b4a3 100644
--- a/pkgs/development/python-modules/llvmlite/default.nix
+++ b/pkgs/development/python-modules/llvmlite/default.nix
@@ -48,7 +48,7 @@ buildPythonPackage rec {
     cd $out
   '';
 
-  __impureHostDeps = lib.optionals stdenv.isDarwin [ "/usr/lib/libm.dylib" ];
+  __impureHostDeps = lib.optionals stdenv.hostPlatform.isDarwin [ "/usr/lib/libm.dylib" ];
 
   passthru = lib.optionalAttrs (!withStaticLLVM) { inherit llvm; };
 
diff --git a/pkgs/development/python-modules/loguru/default.nix b/pkgs/development/python-modules/loguru/default.nix
index b3ec041169fe..216a20663381 100644
--- a/pkgs/development/python-modules/loguru/default.nix
+++ b/pkgs/development/python-modules/loguru/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
 
   disabledTestPaths = [
     "tests/test_type_hinting.py" # avoid dependency on mypy
-  ] ++ lib.optionals stdenv.isDarwin [ "tests/test_multiprocessing.py" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "tests/test_multiprocessing.py" ];
 
   disabledTests =
     [
@@ -43,7 +43,7 @@ buildPythonPackage rec {
       # Slow test
       "test_time_rotation"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_rotation_and_retention"
       "test_rotation_and_retention_timed_file"
       "test_renaming"
diff --git a/pkgs/development/python-modules/logutils/default.nix b/pkgs/development/python-modules/logutils/default.nix
index eb0e1ebd5368..df79cc9dc3e4 100644
--- a/pkgs/development/python-modules/logutils/default.nix
+++ b/pkgs/development/python-modules/logutils/default.nix
@@ -41,7 +41,7 @@ buildPythonPackage rec {
     "test_hashandlers"
   ];
 
-  disabledTestPaths = lib.optionals (stdenv.isDarwin) [
+  disabledTestPaths = lib.optionals (stdenv.hostPlatform.isDarwin) [
     # Exception: unable to connect to Redis server
     "tests/test_redis.py"
   ];
diff --git a/pkgs/development/python-modules/ltpycld2/default.nix b/pkgs/development/python-modules/ltpycld2/default.nix
index 7635b631170c..510259d72d6e 100644
--- a/pkgs/development/python-modules/ltpycld2/default.nix
+++ b/pkgs/development/python-modules/ltpycld2/default.nix
@@ -26,6 +26,6 @@ buildPythonPackage rec {
     homepage = "https://github.com/LibreTranslate/pycld2";
     license = licenses.asl20;
     maintainers = with maintainers; [ misuzu ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/lxml/default.nix b/pkgs/development/python-modules/lxml/default.nix
index bc09e20503e9..c035c5246795 100644
--- a/pkgs/development/python-modules/lxml/default.nix
+++ b/pkgs/development/python-modules/lxml/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
     libxslt.dev
     cython
     setuptools
-  ] ++ lib.optionals stdenv.isDarwin [ xcodebuild ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcodebuild ];
   buildInputs = [
     libxml2
     libxslt
diff --git a/pkgs/development/python-modules/lzallright/default.nix b/pkgs/development/python-modules/lzallright/default.nix
index 697acafb6ed6..ee5be2d8dc44 100644
--- a/pkgs/development/python-modules/lzallright/default.nix
+++ b/pkgs/development/python-modules/lzallright/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
     maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   pythonImportsCheck = [ "lzallright" ];
 
diff --git a/pkgs/development/python-modules/m2crypto/default.nix b/pkgs/development/python-modules/m2crypto/default.nix
index 75f1e94f3bb2..1043325e1033 100644
--- a/pkgs/development/python-modules/m2crypto/default.nix
+++ b/pkgs/development/python-modules/m2crypto/default.nix
@@ -31,7 +31,7 @@ buildPythonPackage rec {
 
   env =
     {
-      NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin (toString [
+      NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin (toString [
         "-Wno-error=implicit-function-declaration"
         "-Wno-error=incompatible-pointer-types"
       ]);
diff --git a/pkgs/development/python-modules/magic-wormhole-mailbox-server/default.nix b/pkgs/development/python-modules/magic-wormhole-mailbox-server/default.nix
index 55bc5da3fd35..d98cfa259579 100644
--- a/pkgs/development/python-modules/magic-wormhole-mailbox-server/default.nix
+++ b/pkgs/development/python-modules/magic-wormhole-mailbox-server/default.nix
@@ -54,7 +54,7 @@ buildPythonPackage rec {
     mock
   ];
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     # these tests fail in Darwin's sandbox
     "src/wormhole_mailbox_server/test/test_web.py"
   ];
diff --git a/pkgs/development/python-modules/magic-wormhole/default.nix b/pkgs/development/python-modules/magic-wormhole/default.nix
index e765a52cc76f..01c714e414b9 100644
--- a/pkgs/development/python-modules/magic-wormhole/default.nix
+++ b/pkgs/development/python-modules/magic-wormhole/default.nix
@@ -52,7 +52,7 @@ buildPythonPackage rec {
         'return "${placeholder "out"}/bin/wormhole"'
     ''
     # fix the location of the ifconfig binary
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       sed -i -e "s|'ifconfig'|'${nettools}/bin/ifconfig'|" src/wormhole/ipaddrs.py
     '';
 
@@ -88,7 +88,7 @@ buildPythonPackage rec {
       pytestCheckHook
     ]
     ++ passthru.optional-dependencies.dilation
-    ++ lib.optionals stdenv.isDarwin [ unixtools.locale ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ unixtools.locale ];
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/development/python-modules/magika/default.nix b/pkgs/development/python-modules/magika/default.nix
index 0c670a813741..444f4d844ea3 100644
--- a/pkgs/development/python-modules/magika/default.nix
+++ b/pkgs/development/python-modules/magika/default.nix
@@ -48,6 +48,6 @@ buildPythonPackage rec {
     maintainers = with maintainers; [ mihaimaruseac ];
     mainProgram = "magika";
     # Currently, disabling on AArch64 as it onnx runtime crashes on ofborg
-    broken = stdenv.isAarch64 && stdenv.isLinux;
+    broken = stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux;
   };
 }
diff --git a/pkgs/development/python-modules/mahotas/default.nix b/pkgs/development/python-modules/mahotas/default.nix
index 144aae89c79d..307ed168acdb 100644
--- a/pkgs/development/python-modules/mahotas/default.nix
+++ b/pkgs/development/python-modules/mahotas/default.nix
@@ -49,10 +49,10 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "mahotas" ];
 
-  disabled = stdenv.isi686; # Failing tests
+  disabled = stdenv.hostPlatform.isi686; # Failing tests
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Computer vision package based on numpy";
     homepage = "https://mahotas.readthedocs.io/";
     maintainers = with maintainers; [ luispedro ];
diff --git a/pkgs/development/python-modules/manhole/default.nix b/pkgs/development/python-modules/manhole/default.nix
index d1ca10b9e81c..940dc355e482 100644
--- a/pkgs/development/python-modules/manhole/default.nix
+++ b/pkgs/development/python-modules/manhole/default.nix
@@ -22,7 +22,7 @@ buildPythonPackage rec {
   # {test_locals,test_socket_path} fail to remove /tmp/manhole-socket
   # on the x86_64-darwin builder.
   #
-  # TODO: change this back to `doCheck = stdenv.isLinux` after
+  # TODO: change this back to `doCheck = stdenv.hostPlatform.isLinux` after
   # https://github.com/ionelmc/python-manhole/issues/54 is fixed
   doCheck = false;
 
diff --git a/pkgs/development/python-modules/manimpango/default.nix b/pkgs/development/python-modules/manimpango/default.nix
index c0f8e475b365..6a1876ed6376 100644
--- a/pkgs/development/python-modules/manimpango/default.nix
+++ b/pkgs/development/python-modules/manimpango/default.nix
@@ -28,7 +28,7 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ pango ] ++ lib.optionals stdenv.isDarwin [ AppKit ];
+  buildInputs = [ pango ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ];
 
   propagatedBuildInputs = [ cython ];
 
diff --git a/pkgs/development/python-modules/markdown-it-py/default.nix b/pkgs/development/python-modules/markdown-it-py/default.nix
index 1754ec45b76e..f50f6e8e308c 100644
--- a/pkgs/development/python-modules/markdown-it-py/default.nix
+++ b/pkgs/development/python-modules/markdown-it-py/default.nix
@@ -56,7 +56,7 @@ buildPythonPackage rec {
   preCheck = ''
     rm -r benchmarking
   '';
-  doCheck = !stdenv.isi686;
+  doCheck = !stdenv.hostPlatform.isi686;
 
   pythonImportsCheck = [ "markdown_it" ];
 
diff --git a/pkgs/development/python-modules/materialx/default.nix b/pkgs/development/python-modules/materialx/default.nix
index b1e11ba6de23..7b22621cdb8a 100644
--- a/pkgs/development/python-modules/materialx/default.nix
+++ b/pkgs/development/python-modules/materialx/default.nix
@@ -37,14 +37,14 @@ buildPythonPackage rec {
       openimageio
       imath
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         OpenGL
         Cocoa
       ]
     )
-    ++ lib.optionals (!stdenv.isDarwin) [
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
       libX11
       libXt
       libGL
@@ -54,7 +54,7 @@ buildPythonPackage rec {
     (lib.cmakeBool "MATERIALX_BUILD_OIIO" true)
     (lib.cmakeBool "MATERIALX_BUILD_PYTHON" true)
     # don't build MSL shader back-end on x86_x64-darwin, as it requires a newer SDK with metal support
-    (lib.cmakeBool "MATERIALX_BUILD_GEN_MSL" (stdenv.isLinux || (stdenv.isAarch64 && stdenv.isDarwin)))
+    (lib.cmakeBool "MATERIALX_BUILD_GEN_MSL" (stdenv.hostPlatform.isLinux || (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin)))
   ];
 
   pythonImportsCheck = [ "MaterialX" ];
diff --git a/pkgs/development/python-modules/matplotlib/default.nix b/pkgs/development/python-modules/matplotlib/default.nix
index 2bcf4d246c45..d91c96e6dd74 100644
--- a/pkgs/development/python-modules/matplotlib/default.nix
+++ b/pkgs/development/python-modules/matplotlib/default.nix
@@ -52,7 +52,7 @@
 
   # Tk
   # Darwin has its own "MacOSX" backend, PyPy has tkagg backend and does not support tkinter
-  enableTk ? (!stdenv.isDarwin && !isPyPy),
+  enableTk ? (!stdenv.hostPlatform.isDarwin && !isPyPy),
   tcl,
   tk,
   tkinter,
@@ -114,7 +114,7 @@ buildPythonPackage rec {
         --replace-fail '"numpy>=2.0.0rc1,<2.3",' ""
       patchShebangs tools
     ''
-    + lib.optionalString (stdenv.isLinux && interactive) ''
+    + lib.optionalString (stdenv.hostPlatform.isLinux && interactive) ''
       # fix paths to libraries in dlopen calls (headless detection)
       substituteInPlace src/_c_internal_utils.cpp \
         --replace-fail libX11.so.6 ${libX11}/lib/libX11.so.6 \
@@ -139,10 +139,10 @@ buildPythonPackage rec {
       tcl
       tk
     ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   # clang-11: error: argument unused during compilation: '-fno-strict-overflow' [-Werror,-Wunused-command-line-argument]
-  hardeningDisable = lib.optionals stdenv.isDarwin [ "strictoverflow" ];
+  hardeningDisable = lib.optionals stdenv.hostPlatform.isDarwin [ "strictoverflow" ];
 
   build-system = [
     certifi
diff --git a/pkgs/development/python-modules/matplotx/default.nix b/pkgs/development/python-modules/matplotx/default.nix
index 978e35e2404e..8baa52efcf4d 100644
--- a/pkgs/development/python-modules/matplotx/default.nix
+++ b/pkgs/development/python-modules/matplotx/default.nix
@@ -45,7 +45,7 @@ buildPythonPackage rec {
 
   # This variable is needed to suppress the "Trace/BPT trap: 5" error in Darwin's checkPhase.
   # Not sure of the details, but we can avoid it by changing the matplotlib backend during testing.
-  env.MPLBACKEND = lib.optionalString stdenv.isDarwin "Agg";
+  env.MPLBACKEND = lib.optionalString stdenv.hostPlatform.isDarwin "Agg";
 
   nativeCheckInputs = [ pytestCheckHook ] ++ passthru.optional-dependencies.all;
 
diff --git a/pkgs/development/python-modules/maxminddb/default.nix b/pkgs/development/python-modules/maxminddb/default.nix
index d510be3b3a2c..0dffe5503122 100644
--- a/pkgs/development/python-modules/maxminddb/default.nix
+++ b/pkgs/development/python-modules/maxminddb/default.nix
@@ -28,7 +28,7 @@ buildPythonPackage rec {
 
   # The multiprocessing tests fail on Darwin because multiprocessing uses spawn instead of fork,
   # resulting in an exception when it can’t pickle the `lookup` local function.
-  disabledTests = lib.optionals stdenv.isDarwin [ "multiprocessing" ];
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [ "multiprocessing" ];
 
   meta = with lib; {
     description = "Reader for the MaxMind DB format";
diff --git a/pkgs/development/python-modules/miniaudio/default.nix b/pkgs/development/python-modules/miniaudio/default.nix
index e7e98b265e2d..0f86ee525000 100644
--- a/pkgs/development/python-modules/miniaudio/default.nix
+++ b/pkgs/development/python-modules/miniaudio/default.nix
@@ -45,7 +45,7 @@ buildPythonPackage rec {
 
   build-system = [ setuptools ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     AudioToolbox
     CoreAudio
   ];
diff --git a/pkgs/development/python-modules/miniupnpc/default.nix b/pkgs/development/python-modules/miniupnpc/default.nix
index a23ef91c8a81..04d8a08bf1c3 100644
--- a/pkgs/development/python-modules/miniupnpc/default.nix
+++ b/pkgs/development/python-modules/miniupnpc/default.nix
@@ -17,7 +17,7 @@ buildPythonPackage rec {
     hash = "sha256-KwpNVl+tZTZHHZKW9p3a/S0nZJW6lZftjBK9ECkRUMo=";
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
     which
   ];
diff --git a/pkgs/development/python-modules/mip/default.nix b/pkgs/development/python-modules/mip/default.nix
index 16ecf80905aa..63f2eeb59d72 100644
--- a/pkgs/development/python-modules/mip/default.nix
+++ b/pkgs/development/python-modules/mip/default.nix
@@ -89,7 +89,7 @@ buildPythonPackage rec {
     downloadPage = "https://github.com/coin-or/python-mip/releases";
     changelog = "https://github.com/coin-or/python-mip/releases/tag/${version}";
     license = licenses.epl20;
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
     maintainers = with maintainers; [ nessdoor ];
   };
 }
diff --git a/pkgs/development/python-modules/mitmproxy-rs/default.nix b/pkgs/development/python-modules/mitmproxy-rs/default.nix
index bc2ed1694071..cbe1442da06b 100644
--- a/pkgs/development/python-modules/mitmproxy-rs/default.nix
+++ b/pkgs/development/python-modules/mitmproxy-rs/default.nix
@@ -36,7 +36,7 @@ buildPythonPackage rec {
     rustPlatform.maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     libiconv
     mitmproxy-macos
diff --git a/pkgs/development/python-modules/mitmproxy/default.nix b/pkgs/development/python-modules/mitmproxy/default.nix
index 2c4d1da6e629..5e01020bb21f 100644
--- a/pkgs/development/python-modules/mitmproxy/default.nix
+++ b/pkgs/development/python-modules/mitmproxy/default.nix
@@ -91,7 +91,7 @@ buildPythonPackage rec {
     urwid
     wsproto
     zstandard
-  ] ++ lib.optionals stdenv.isDarwin [ mitmproxy-macos ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ mitmproxy-macos ];
 
   nativeCheckInputs = [
     hypothesis
diff --git a/pkgs/development/python-modules/mmengine/default.nix b/pkgs/development/python-modules/mmengine/default.nix
index ff07caeb877e..e8efda866dac 100644
--- a/pkgs/development/python-modules/mmengine/default.nix
+++ b/pkgs/development/python-modules/mmengine/default.nix
@@ -114,6 +114,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/open-mmlab/mmengine/releases/tag/v${version}";
     license = with licenses; [ asl20 ];
     maintainers = with maintainers; [ rxiao ];
-    broken = stdenv.isDarwin || (stdenv.isLinux && stdenv.isAarch64);
+    broken = stdenv.hostPlatform.isDarwin || (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   };
 }
diff --git a/pkgs/development/python-modules/mocket/default.nix b/pkgs/development/python-modules/mocket/default.nix
index eb5ffb2b244f..1df4cc1eef21 100644
--- a/pkgs/development/python-modules/mocket/default.nix
+++ b/pkgs/development/python-modules/mocket/default.nix
@@ -74,12 +74,12 @@ buildPythonPackage rec {
     ++ lib.optionals (pythonOlder "3.12") [ aiohttp ]
     ++ lib.flatten (builtins.attrValues passthru.optional-dependencies);
 
-  preCheck = lib.optionalString stdenv.isLinux ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isLinux ''
     ${redis-server}/bin/redis-server &
     REDIS_PID=$!
   '';
 
-  postCheck = lib.optionalString stdenv.isLinux ''
+  postCheck = lib.optionalString stdenv.hostPlatform.isLinux ''
     kill $REDIS_PID
   '';
 
@@ -98,7 +98,7 @@ buildPythonPackage rec {
     "test_no_dangling_fds"
   ];
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [ "tests/main/test_redis.py" ];
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [ "tests/main/test_redis.py" ];
 
   pythonImportsCheck = [ "mocket" ];
 
diff --git a/pkgs/development/python-modules/modeled/default.nix b/pkgs/development/python-modules/modeled/default.nix
index 04655a61378f..07127184d216 100644
--- a/pkgs/development/python-modules/modeled/default.nix
+++ b/pkgs/development/python-modules/modeled/default.nix
@@ -34,7 +34,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "modeled" ];
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
     description = "Universal data modeling for Python";
     homepage = "https://github.com/modeled/modeled";
     license = licenses.lgpl3Only;
diff --git a/pkgs/development/python-modules/moderngl-window/default.nix b/pkgs/development/python-modules/moderngl-window/default.nix
index 27fd4ef9663d..5539d053a065 100644
--- a/pkgs/development/python-modules/moderngl-window/default.nix
+++ b/pkgs/development/python-modules/moderngl-window/default.nix
@@ -72,6 +72,6 @@ buildPythonPackage rec {
     license = licenses.mit;
     maintainers = with maintainers; [ c0deaddict ];
     inherit (mesa.meta) platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/monotonic/default.nix b/pkgs/development/python-modules/monotonic/default.nix
index 8b138a383080..46e8e0f35492 100644
--- a/pkgs/development/python-modules/monotonic/default.nix
+++ b/pkgs/development/python-modules/monotonic/default.nix
@@ -15,9 +15,9 @@ buildPythonPackage rec {
     sha256 = "3a55207bcfed53ddd5c5bae174524062935efed17792e9de2ad0205ce9ad63f7";
   };
 
-  __propagatedImpureHostDeps = lib.optional stdenv.isDarwin "/usr/lib/libc.dylib";
+  __propagatedImpureHostDeps = lib.optional stdenv.hostPlatform.isDarwin "/usr/lib/libc.dylib";
 
-  patchPhase = lib.optionalString stdenv.isLinux ''
+  patchPhase = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace monotonic.py --replace \
       "ctypes.util.find_library('c')" "'${stdenv.cc.libc}/lib/libc.so'"
   '';
diff --git a/pkgs/development/python-modules/morecantile/default.nix b/pkgs/development/python-modules/morecantile/default.nix
index 0a8a5001c003..d7e31fa4af6e 100644
--- a/pkgs/development/python-modules/morecantile/default.nix
+++ b/pkgs/development/python-modules/morecantile/default.nix
@@ -43,7 +43,7 @@ buildPythonPackage rec {
     rasterio
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # https://github.com/developmentseed/morecantile/issues/156
     "test_tiles_when_tms_bounds_and_provided_bounds_cross_antimeridian"
   ];
diff --git a/pkgs/development/python-modules/motioneye-client/default.nix b/pkgs/development/python-modules/motioneye-client/default.nix
index 1d27f9e0dbbb..487de3c3228c 100644
--- a/pkgs/development/python-modules/motioneye-client/default.nix
+++ b/pkgs/development/python-modules/motioneye-client/default.nix
@@ -48,6 +48,6 @@ buildPythonPackage rec {
     homepage = "https://github.com/dermotduffy/motioneye-client";
     license = with licenses; [ mit ];
     maintainers = with maintainers; [ fab ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/myjwt/default.nix b/pkgs/development/python-modules/myjwt/default.nix
index 78e368360a41..094065310854 100644
--- a/pkgs/development/python-modules/myjwt/default.nix
+++ b/pkgs/development/python-modules/myjwt/default.nix
@@ -68,6 +68,6 @@ buildPythonPackage rec {
     license = with licenses; [ mit ];
     maintainers = with maintainers; [ fab ];
     # Build failures
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/nats-py/default.nix b/pkgs/development/python-modules/nats-py/default.nix
index e96ba513b131..4a28fc2c57bd 100644
--- a/pkgs/development/python-modules/nats-py/default.nix
+++ b/pkgs/development/python-modules/nats-py/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
       "test_ordered_consumer_larger_streams"
       "test_object_file_basics"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_subscribe_iterate_next_msg"
       "test_buf_size_force_flush_timeout"
     ];
diff --git a/pkgs/development/python-modules/ndtypes/default.nix b/pkgs/development/python-modules/ndtypes/default.nix
index 55ec525d4420..d3eb0a25ed01 100644
--- a/pkgs/development/python-modules/ndtypes/default.nix
+++ b/pkgs/development/python-modules/ndtypes/default.nix
@@ -36,7 +36,7 @@ buildPythonPackage {
       mkdir $out/include
       cp python/ndtypes/*.h $out/include
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       install_name_tool -add_rpath ${libndtypes}/lib $out/${python.sitePackages}/ndtypes/_ndtypes.*.so
     '';
 
diff --git a/pkgs/development/python-modules/nh3/default.nix b/pkgs/development/python-modules/nh3/default.nix
index 1699b18c182d..f438525e5182 100644
--- a/pkgs/development/python-modules/nh3/default.nix
+++ b/pkgs/development/python-modules/nh3/default.nix
@@ -34,7 +34,7 @@ buildPythonPackage {
     maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/development/python-modules/nipype/default.nix b/pkgs/development/python-modules/nipype/default.nix
index da8452a437ed..6169a0f69da3 100644
--- a/pkgs/development/python-modules/nipype/default.nix
+++ b/pkgs/development/python-modules/nipype/default.nix
@@ -93,7 +93,7 @@ buildPythonPackage rec {
   ];
 
   # checks on darwin inspect memory which doesn't work in build environment
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   # ignore tests which incorrect fail to detect xvfb
   checkPhase = ''
     LC_ALL="en_US.UTF-8" pytest nipype/tests -k 'not display and not test_no_et_multiproc'
diff --git a/pkgs/development/python-modules/nitime/default.nix b/pkgs/development/python-modules/nitime/default.nix
index 6cc35b662c00..35b8eb4c46fc 100644
--- a/pkgs/development/python-modules/nitime/default.nix
+++ b/pkgs/development/python-modules/nitime/default.nix
@@ -51,7 +51,7 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  doCheck = !stdenv.isDarwin; # tests hang indefinitely
+  doCheck = !stdenv.hostPlatform.isDarwin; # tests hang indefinitely
 
   pythonImportsCheck = [ "nitime" ];
 
diff --git a/pkgs/development/python-modules/notify-py/default.nix b/pkgs/development/python-modules/notify-py/default.nix
index 38f4ff5af140..cc46dbe77fdf 100644
--- a/pkgs/development/python-modules/notify-py/default.nix
+++ b/pkgs/development/python-modules/notify-py/default.nix
@@ -31,7 +31,7 @@ buildPythonPackage rec {
   };
 
   patches =
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       # hardcode paths to aplay and notify-send
       (substituteAll {
         src = ./linux-paths.patch;
@@ -39,7 +39,7 @@ buildPythonPackage rec {
         notifysend = "${libnotify}/bin/notify-send";
       })
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # hardcode path to which
       (substituteAll {
         src = ./darwin-paths.patch;
@@ -53,19 +53,19 @@ buildPythonPackage rec {
 
   pythonRelaxDeps = [ "loguru" ];
 
-  propagatedBuildInputs = [ loguru ] ++ lib.optionals stdenv.isLinux [ jeepney ];
+  propagatedBuildInputs = [ loguru ] ++ lib.optionals stdenv.hostPlatform.isLinux [ jeepney ];
 
-  nativeCheckInputs = [ pytest ] ++ lib.optionals stdenv.isLinux [ dbus ];
+  nativeCheckInputs = [ pytest ] ++ lib.optionals stdenv.hostPlatform.isLinux [ dbus ];
 
   checkPhase =
-    if stdenv.isDarwin then
+    if stdenv.hostPlatform.isDarwin then
       ''
         # Tests search for "afplay" binary which is built in to macOS and not available in nixpkgs
         mkdir $TMP/bin
         ln -s ${coreutils}/bin/true $TMP/bin/afplay
         PATH="$TMP/bin:$PATH" pytest
       ''
-    else if stdenv.isLinux then
+    else if stdenv.hostPlatform.isLinux then
       ''
         dbus-run-session \
           --config-file=${dbus}/share/dbus-1/session.conf \
diff --git a/pkgs/development/python-modules/numba/default.nix b/pkgs/development/python-modules/numba/default.nix
index 10f622b37722..18bd264c5d76 100644
--- a/pkgs/development/python-modules/numba/default.nix
+++ b/pkgs/development/python-modules/numba/default.nix
@@ -78,7 +78,7 @@ buildPythonPackage rec {
         "dldir = [ '${addDriverRunpath.driverLink}/lib', "
   '';
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
 
   build-system = [
     setuptools
diff --git a/pkgs/development/python-modules/numpy/1.nix b/pkgs/development/python-modules/numpy/1.nix
index ade66d14b829..2bd7a44903fa 100644
--- a/pkgs/development/python-modules/numpy/1.nix
+++ b/pkgs/development/python-modules/numpy/1.nix
@@ -105,7 +105,7 @@ buildPythonPackage rec {
       meson-python
       pkg-config
     ]
-    ++ lib.optionals (stdenv.isDarwin) [ xcbuild.xcrun ]
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ xcbuild.xcrun ]
     ++ lib.optionals (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) [ mesonEmulatorHook ];
 
   buildInputs = [
@@ -155,13 +155,13 @@ buildPythonPackage rec {
 
   # https://github.com/numpy/numpy/issues/24548
   disabledTests =
-    lib.optionals stdenv.isi686 [
+    lib.optionals stdenv.hostPlatform.isi686 [
       "test_new_policy" # AssertionError: assert False
       "test_identityless_reduction_huge_array" # ValueError: Maximum allowed dimension exceeded
       "test_float_remainder_overflow" # AssertionError: FloatingPointError not raised by divmod
       "test_int" # AssertionError: selectedintkind(19): expected 16 but got -1
     ]
-    ++ lib.optionals stdenv.isAarch32 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch32 [
       "test_impossible_feature_enable" # AssertionError: Failed to generate error
       "test_features" # AssertionError: Failure Detection
       "test_new_policy" # AssertionError: assert False
@@ -173,10 +173,10 @@ buildPythonPackage rec {
       "test_big_arrays" # ValueError: array is too big; `arr.size * arr.dtype.itemsize` is larger tha...
       "test_multinomial_pvals_float32" # Failed: DID NOT RAISE <class 'ValueError'>
     ]
-    ++ lib.optionals stdenv.isAarch64 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [
       "test_big_arrays" # OOM on a 16G machine
     ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
       # can fail on virtualized machines confused over their cpu identity
       "test_dispatcher"
     ];
diff --git a/pkgs/development/python-modules/numpy/2.nix b/pkgs/development/python-modules/numpy/2.nix
index 5b71602d72c2..e8f6d36b73d8 100644
--- a/pkgs/development/python-modules/numpy/2.nix
+++ b/pkgs/development/python-modules/numpy/2.nix
@@ -90,7 +90,7 @@ buildPythonPackage rec {
       meson-python
       pkg-config
     ]
-    ++ lib.optionals stdenv.isDarwin [ xcbuild.xcrun ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcbuild.xcrun ]
     ++ lib.optionals (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) [ mesonEmulatorHook ];
 
   # we default openblas to build with 64 threads
@@ -144,7 +144,7 @@ buildPythonPackage rec {
       # https://github.com/numpy/numpy/issues/26713
       "test_iter_refcount"
     ]
-    ++ lib.optionals stdenv.isAarch32 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch32 [
       # https://github.com/numpy/numpy/issues/24548
       "test_impossible_feature_enable" # AssertionError: Failed to generate error
       "test_features" # AssertionError: Failure Detection
@@ -157,7 +157,7 @@ buildPythonPackage rec {
       "test_big_arrays" # ValueError: array is too big; `arr.size * arr.dtype.itemsize` is larger tha...
       "test_multinomial_pvals_float32" # Failed: DID NOT RAISE <class 'ValueError'>
     ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
       # AssertionError: (np.int64(0), np.longdouble('9.9999999999999994515e-21'), np.longdouble('3.9696755572509052902e+20'), 'arctanh')
       "test_loss_of_precision"
     ];
diff --git a/pkgs/development/python-modules/nutils-poly/default.nix b/pkgs/development/python-modules/nutils-poly/default.nix
index 3acda2fe55f1..e15b2fcd2a27 100644
--- a/pkgs/development/python-modules/nutils-poly/default.nix
+++ b/pkgs/development/python-modules/nutils-poly/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ rustPlatform.cargoSetupHook ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   build-system = [ rustPlatform.maturinBuildHook ];
 
diff --git a/pkgs/development/python-modules/okonomiyaki/default.nix b/pkgs/development/python-modules/okonomiyaki/default.nix
index 816b93c833a7..d8b909b9a571 100644
--- a/pkgs/development/python-modules/okonomiyaki/default.nix
+++ b/pkgs/development/python-modules/okonomiyaki/default.nix
@@ -40,7 +40,7 @@ buildPythonPackage rec {
       substituteInPlace okonomiyaki/runtimes/tests/test_runtime.py \
         --replace 'runtime_info = PythonRuntime.from_running_python()' 'raise unittest.SkipTest() #'
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace okonomiyaki/platforms/tests/test_pep425.py \
         --replace 'self.assertEqual(platform_tag, self.tag.platform)' 'raise unittest.SkipTest()'
     '';
diff --git a/pkgs/development/python-modules/onecache/default.nix b/pkgs/development/python-modules/onecache/default.nix
index 03a8520bbfe0..fb1aa5c65484 100644
--- a/pkgs/development/python-modules/onecache/default.nix
+++ b/pkgs/development/python-modules/onecache/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
     pytest-asyncio
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # test fails due to unknown reason on darwin
     "test_lru_and_ttl_refresh"
   ];
diff --git a/pkgs/development/python-modules/onnx/default.nix b/pkgs/development/python-modules/onnx/default.nix
index a0cc441e2e50..f8bdd75368a1 100644
--- a/pkgs/development/python-modules/onnx/default.nix
+++ b/pkgs/development/python-modules/onnx/default.nix
@@ -123,7 +123,7 @@ buildPythonPackage rec {
       "test_vgg19_cpu"
       "test_zfnet512_cpu"
     ]
-    ++ lib.optionals stdenv.isAarch64 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [
       # AssertionError: Output 0 of test 0 in folder
       "test__pytorch_converted_Conv2d_depthwise_padded"
       "test__pytorch_converted_Conv2d_dilated"
diff --git a/pkgs/development/python-modules/onnxruntime/default.nix b/pkgs/development/python-modules/onnxruntime/default.nix
index c0227ee831f0..48c342c1626f 100644
--- a/pkgs/development/python-modules/onnxruntime/default.nix
+++ b/pkgs/development/python-modules/onnxruntime/default.nix
@@ -35,7 +35,7 @@ buildPythonPackage {
     chmod +w dist
   '';
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   # This project requires fairly large dependencies such as sympy which we really don't always need.
   pythonRemoveDeps = [
diff --git a/pkgs/development/python-modules/open-clip-torch/default.nix b/pkgs/development/python-modules/open-clip-torch/default.nix
index dc3bf4d78591..a315c3d0d070 100644
--- a/pkgs/development/python-modules/open-clip-torch/default.nix
+++ b/pkgs/development/python-modules/open-clip-torch/default.nix
@@ -79,7 +79,7 @@ buildPythonPackage rec {
       # fails due to type errors
       "test_num_shards"
     ]
-    ++ lib.optionals (stdenv.isAarch64 && stdenv.isLinux) [
+    ++ lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) [
       "test_training"
       "test_training_coca"
       "test_training_unfreezing_vit"
diff --git a/pkgs/development/python-modules/opensfm/default.nix b/pkgs/development/python-modules/opensfm/default.nix
index bd5b97ab2852..bfaa8b8f1b73 100644
--- a/pkgs/development/python-modules/opensfm/default.nix
+++ b/pkgs/development/python-modules/opensfm/default.nix
@@ -113,7 +113,7 @@ buildPythonPackage rec {
     [
       "test_run_all" # Matplotlib issues. Broken integration is less useless than a broken build
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_reconstruction_incremental"
       "test_reconstruction_triangulation"
     ];
@@ -121,7 +121,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "opensfm" ];
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = [ lib.maintainers.SomeoneSerge ];
     license = lib.licenses.bsd2;
     changelog = "https://github.com/mapillary/OpenSfM/blob/${src.rev}/CHANGELOG.md";
diff --git a/pkgs/development/python-modules/openstacksdk/tests.nix b/pkgs/development/python-modules/openstacksdk/tests.nix
index be333be87665..c5bbc68e3d6c 100644
--- a/pkgs/development/python-modules/openstacksdk/tests.nix
+++ b/pkgs/development/python-modules/openstacksdk/tests.nix
@@ -39,7 +39,7 @@ buildPythonPackage {
     ''
       stestr run -e <(echo "
     ''
-    + lib.optionalString stdenv.isAarch64 ''
+    + lib.optionalString stdenv.hostPlatform.isAarch64 ''
       openstack.tests.unit.cloud.test_baremetal_node.TestBaremetalNode.test_node_set_provision_state_with_retries
       openstack.tests.unit.cloud.test_role_assignment.TestRoleAssignment.test_grant_role_user_domain_exists
       openstack.tests.unit.cloud.test_volume_backups.TestVolumeBackups.test_delete_volume_backup_force
diff --git a/pkgs/development/python-modules/opentelemetry-instrumentation-grpc/default.nix b/pkgs/development/python-modules/opentelemetry-instrumentation-grpc/default.nix
index 9cf347c046ac..26bde1eaae5e 100644
--- a/pkgs/development/python-modules/opentelemetry-instrumentation-grpc/default.nix
+++ b/pkgs/development/python-modules/opentelemetry-instrumentation-grpc/default.nix
@@ -52,7 +52,7 @@ buildPythonPackage {
     pytestCheckHook
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # RuntimeError: Failed to bind to address
     "TestOpenTelemetryServerInterceptorUnix"
   ];
diff --git a/pkgs/development/python-modules/openusd/default.nix b/pkgs/development/python-modules/openusd/default.nix
index f281bc352d1b..0849ce8dfd7a 100644
--- a/pkgs/development/python-modules/openusd/default.nix
+++ b/pkgs/development/python-modules/openusd/default.nix
@@ -60,7 +60,7 @@ buildPythonPackage rec {
     hash = "sha256-akwLIB5YUbnDiaQXX/K5YLXzWlTYWZG51dtxbSFxPt0=";
   };
 
-  stdenv = if python.stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else python.stdenv;
+  stdenv = if python.stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else python.stdenv;
 
   outputs = [ "out" ] ++ lib.optional withDocs "doc";
 
@@ -92,7 +92,7 @@ buildPythonPackage rec {
     (lib.cmakeBool "PXR_BUILD_USDVIEW" withUsdView)
     (lib.cmakeBool "PXR_BUILD_USD_TOOLS" withTools)
     (lib.cmakeBool "PXR_ENABLE_MATERIALX_SUPPORT" true)
-    (lib.cmakeBool "PXR_ENABLE_OSL_SUPPORT" (!stdenv.isDarwin && withOsl))
+    (lib.cmakeBool "PXR_ENABLE_OSL_SUPPORT" (!stdenv.hostPlatform.isDarwin && withOsl))
   ];
 
   nativeBuildInputs =
@@ -124,15 +124,15 @@ buildPythonPackage rec {
       ptex
       tbb
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       libGL
       libX11
       libXt
     ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk_11_0.frameworks; [ Cocoa ])
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk_11_0.frameworks; [ Cocoa ])
     ++ lib.optionals withOsl [ osl ]
     ++ lib.optionals withUsdView [ qt6.qtbase ]
-    ++ lib.optionals (withUsdView && stdenv.isLinux) [
+    ++ lib.optionals (withUsdView && stdenv.hostPlatform.isLinux) [
       qt6.qtbase
       qt6.qtwayland
     ];
diff --git a/pkgs/development/python-modules/orange-canvas-core/default.nix b/pkgs/development/python-modules/orange-canvas-core/default.nix
index 523e4f857af2..3db1f35784bd 100644
--- a/pkgs/development/python-modules/orange-canvas-core/default.nix
+++ b/pkgs/development/python-modules/orange-canvas-core/default.nix
@@ -94,6 +94,6 @@ buildPythonPackage rec {
     license = [ lib.licenses.gpl3 ];
     maintainers = [ lib.maintainers.lucasew ];
     # Segmentation fault during tests
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/orange-widget-base/default.nix b/pkgs/development/python-modules/orange-widget-base/default.nix
index 50a1e956919a..28c97fdb4238 100644
--- a/pkgs/development/python-modules/orange-widget-base/default.nix
+++ b/pkgs/development/python-modules/orange-widget-base/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
     pyqtgraph
     pyqtwebengine
     typing-extensions
-  ] ++ lib.optionals stdenv.isDarwin [ appnope ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ appnope ];
 
   pythonImportsCheck = [ "orangewidget" ];
 
diff --git a/pkgs/development/python-modules/orbax-checkpoint/default.nix b/pkgs/development/python-modules/orbax-checkpoint/default.nix
index ccf370682b5b..511542d0a490 100644
--- a/pkgs/development/python-modules/orbax-checkpoint/default.nix
+++ b/pkgs/development/python-modules/orbax-checkpoint/default.nix
@@ -75,7 +75,7 @@ buildPythonPackage rec {
     "orbax.checkpoint"
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # Probably failing because of a filesystem impurity
     # self.assertFalse(os.path.exists(dst_dir))
     # AssertionError: True is not false
diff --git a/pkgs/development/python-modules/orjson/default.nix b/pkgs/development/python-modules/orjson/default.nix
index 650d8a634d51..9fd8fe941adb 100644
--- a/pkgs/development/python-modules/orjson/default.nix
+++ b/pkgs/development/python-modules/orjson/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
       maturinBuildHook
     ]);
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   nativeCheckInputs = [
     numpy
diff --git a/pkgs/development/python-modules/osc/default.nix b/pkgs/development/python-modules/osc/default.nix
index f794b91fb0cb..bb16aa7d40e0 100644
--- a/pkgs/development/python-modules/osc/default.nix
+++ b/pkgs/development/python-modules/osc/default.nix
@@ -49,7 +49,7 @@ buildPythonPackage rec {
   preCheck = "HOME=$TOP/tmp";
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/openSUSE/osc";
     description = "opensuse-commander with svn like handling";
     mainProgram = "osc";
diff --git a/pkgs/development/python-modules/oscrypto/default.nix b/pkgs/development/python-modules/oscrypto/default.nix
index fe80b0ac42d4..ef90df289af6 100644
--- a/pkgs/development/python-modules/oscrypto/default.nix
+++ b/pkgs/development/python-modules/oscrypto/default.nix
@@ -48,7 +48,7 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "oscrypto" ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   disabledTests = [
     # Tests require network access
diff --git a/pkgs/development/python-modules/oslo-log/default.nix b/pkgs/development/python-modules/oslo-log/default.nix
index b6cdf9661953..81a9bd5b8e4b 100644
--- a/pkgs/development/python-modules/oslo-log/default.nix
+++ b/pkgs/development/python-modules/oslo-log/default.nix
@@ -39,7 +39,7 @@ buildPythonPackage rec {
     oslo-utils
     pbr
     python-dateutil
-  ] ++ lib.optionals stdenv.isLinux [ pyinotify ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ pyinotify ];
 
   nativeCheckInputs = [
     eventlet
diff --git a/pkgs/development/python-modules/ospd/default.nix b/pkgs/development/python-modules/ospd/default.nix
index e18bc804cfda..ad9bb84c747e 100644
--- a/pkgs/development/python-modules/ospd/default.nix
+++ b/pkgs/development/python-modules/ospd/default.nix
@@ -17,7 +17,7 @@ buildPythonPackage rec {
   version = "21.4.4";
   format = "setuptools";
 
-  disabled = pythonOlder "3.7" || stdenv.isDarwin;
+  disabled = pythonOlder "3.7" || stdenv.hostPlatform.isDarwin;
 
   src = fetchFromGitHub {
     owner = "greenbone";
diff --git a/pkgs/development/python-modules/osxphotos/default.nix b/pkgs/development/python-modules/osxphotos/default.nix
index ab4f7e0c0520..0af996f622a8 100644
--- a/pkgs/development/python-modules/osxphotos/default.nix
+++ b/pkgs/development/python-modules/osxphotos/default.nix
@@ -107,6 +107,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/RhetTbull/osxphotos/blob/${src.rev}/CHANGELOG.md";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ sigmanificient ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/overly/default.nix b/pkgs/development/python-modules/overly/default.nix
index f234c910865e..ea3b291700a0 100644
--- a/pkgs/development/python-modules/overly/default.nix
+++ b/pkgs/development/python-modules/overly/default.nix
@@ -36,6 +36,6 @@ buildPythonPackage rec {
     homepage = "https://github.com/theelous3/overly";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ dotlambda ];
-    broken = stdenv.isDarwin; # https://github.com/theelous3/overly/issues/2
+    broken = stdenv.hostPlatform.isDarwin; # https://github.com/theelous3/overly/issues/2
   };
 }
diff --git a/pkgs/development/python-modules/paddlepaddle/default.nix b/pkgs/development/python-modules/paddlepaddle/default.nix
index 238880794042..8263ae8ec8c5 100644
--- a/pkgs/development/python-modules/paddlepaddle/default.nix
+++ b/pkgs/development/python-modules/paddlepaddle/default.nix
@@ -76,7 +76,7 @@ buildPythonPackage {
     )
   );
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     function fixRunPath {
       p=$(patchelf --print-rpath $1)
       patchelf --set-rpath "$p:$libraryPath" $1
diff --git a/pkgs/development/python-modules/paho-mqtt/1.nix b/pkgs/development/python-modules/paho-mqtt/1.nix
index 83582102767b..437f7899fad0 100644
--- a/pkgs/development/python-modules/paho-mqtt/1.nix
+++ b/pkgs/development/python-modules/paho-mqtt/1.nix
@@ -26,7 +26,7 @@ buildPythonPackage rec {
     six
   ] ++ lib.optionals (!isPy3k) [ mock ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   pythonImportsCheck = [ "paho.mqtt" ];
 
diff --git a/pkgs/development/python-modules/paho-mqtt/default.nix b/pkgs/development/python-modules/paho-mqtt/default.nix
index 437aa9884beb..890cf28a7462 100644
--- a/pkgs/development/python-modules/paho-mqtt/default.nix
+++ b/pkgs/development/python-modules/paho-mqtt/default.nix
@@ -37,7 +37,7 @@ in buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   pythonImportsCheck = [ "paho.mqtt" ];
 
diff --git a/pkgs/development/python-modules/pandas-stubs/default.nix b/pkgs/development/python-modules/pandas-stubs/default.nix
index 62cefd16c3cd..f216673fc7f0 100644
--- a/pkgs/development/python-modules/pandas-stubs/default.nix
+++ b/pkgs/development/python-modules/pandas-stubs/default.nix
@@ -89,10 +89,10 @@ buildPythonPackage rec {
       "test_timedelta_cmp"
       "test_timestamp_cmp"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_clipboard" # FileNotFoundError: [Errno 2] No such file or directory: 'pbcopy'
     ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
       # Disable tests for types that are not supported on aarch64 in `numpy` < 2.0
       "test_astype_float" # `f16` and `float128`
       "test_astype_complex" # `c32` and `complex256`
diff --git a/pkgs/development/python-modules/pandas/default.nix b/pkgs/development/python-modules/pandas/default.nix
index 3323c5c9a83b..83103314bd83 100644
--- a/pkgs/development/python-modules/pandas/default.nix
+++ b/pkgs/development/python-modules/pandas/default.nix
@@ -184,11 +184,11 @@ let
         pytestCheckHook
       ]
       ++ lib.flatten (lib.attrValues passthru.optional-dependencies)
-      ++ lib.optionals (stdenv.isLinux) [
+      ++ lib.optionals (stdenv.hostPlatform.isLinux) [
         # for locale executable
         glibc
       ]
-      ++ lib.optionals (stdenv.isDarwin) [
+      ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
         # for locale executable
         adv_cmds
       ];
@@ -213,13 +213,13 @@ let
         # AssertionError: Did not see expected warning of class 'FutureWarning'
         "test_parsing_tzlocal_deprecated"
       ]
-      ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+      ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
         # tests/generic/test_finalize.py::test_binops[and_-args4-right] - AssertionError: assert {} == {'a': 1}
         "test_binops"
         # These tests are unreliable on aarch64-darwin. See https://github.com/pandas-dev/pandas/issues/38921.
         "test_rolling"
       ]
-      ++ lib.optional stdenv.is32bit [
+      ++ lib.optional stdenv.hostPlatform.is32bit [
         # https://github.com/pandas-dev/pandas/issues/37398
         "test_rolling_var_numerical_issues"
       ];
@@ -234,7 +234,7 @@ let
       ''
       # TODO: Get locale and clipboard support working on darwin.
       #       Until then we disable the tests.
-      + lib.optionalString stdenv.isDarwin ''
+      + lib.optionalString stdenv.hostPlatform.isDarwin ''
         # Fake the impure dependencies pbpaste and pbcopy
         echo "#!${runtimeShell}" > pbcopy
         echo "#!${runtimeShell}" > pbpaste
@@ -246,7 +246,7 @@ let
 
     meta = with lib; {
       # pandas devs no longer test i686, it's commonly broken
-      # broken = stdenv.isi686;
+      # broken = stdenv.hostPlatform.isi686;
       changelog = "https://pandas.pydata.org/docs/whatsnew/index.html";
       description = "Powerful data structures for data analysis, time series, and statistics";
       downloadPage = "https://github.com/pandas-dev/pandas";
diff --git a/pkgs/development/python-modules/papermill/default.nix b/pkgs/development/python-modules/papermill/default.nix
index 2a5352b9d058..3c310b72b28b 100644
--- a/pkgs/development/python-modules/papermill/default.nix
+++ b/pkgs/development/python-modules/papermill/default.nix
@@ -91,7 +91,7 @@ buildPythonPackage rec {
       # pytest 8 compat
       "test_read_with_valid_file_extension"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # might fail due to the sandbox
       "test_end2end_autosave_slow_notebook"
     ];
diff --git a/pkgs/development/python-modules/papis/default.nix b/pkgs/development/python-modules/papis/default.nix
index 06c4f97cde5e..f7f36edfb201 100644
--- a/pkgs/development/python-modules/papis/default.nix
+++ b/pkgs/development/python-modules/papis/default.nix
@@ -100,7 +100,7 @@ buildPythonPackage rec {
     "test_valid_dblp_key"
     "test_validate_arxivid"
     "test_yaml"
-  ] ++ lib.optionals stdenv.isDarwin [ "test_default_opener" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_default_opener" ];
 
   pythonImportsCheck = [ "papis" ];
 
diff --git a/pkgs/development/python-modules/patool/default.nix b/pkgs/development/python-modules/patool/default.nix
index feaef66da2b7..fa0ae199bd74 100644
--- a/pkgs/development/python-modules/patool/default.nix
+++ b/pkgs/development/python-modules/patool/default.nix
@@ -61,7 +61,7 @@ buildPythonPackage rec {
     "test_unzip_file"
     "test_zip"
     "test_zip_file"
-  ] ++ lib.optionals stdenv.isDarwin [ "test_ar" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_ar" ];
 
   meta = with lib; {
     description = "portable archive file manager";
diff --git a/pkgs/development/python-modules/pdf2docx/default.nix b/pkgs/development/python-modules/pdf2docx/default.nix
index af91594808b5..12d347227a9b 100644
--- a/pkgs/development/python-modules/pdf2docx/default.nix
+++ b/pkgs/development/python-modules/pdf2docx/default.nix
@@ -49,7 +49,7 @@ buildPythonPackage {
     python-docx
   ];
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     # on linux the icon file can only be xbm format
     convert $out/${python.sitePackages}/pdf2docx/gui/icon.ico \
       $out/${python.sitePackages}/pdf2docx/gui/icon.xbm
diff --git a/pkgs/development/python-modules/pdoc-pyo3-sample-library/default.nix b/pkgs/development/python-modules/pdoc-pyo3-sample-library/default.nix
index 3a653ec5f49a..9e74fa519175 100644
--- a/pkgs/development/python-modules/pdoc-pyo3-sample-library/default.nix
+++ b/pkgs/development/python-modules/pdoc-pyo3-sample-library/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
     rustc
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   pythonImportsCheck = [ "pdoc_pyo3_sample_library" ];
 
diff --git a/pkgs/development/python-modules/pebble/default.nix b/pkgs/development/python-modules/pebble/default.nix
index 827e45f12590..ea618df3293f 100644
--- a/pkgs/development/python-modules/pebble/default.nix
+++ b/pkgs/development/python-modules/pebble/default.nix
@@ -22,7 +22,7 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   pythonImportsCheck = [ "pebble" ];
 
diff --git a/pkgs/development/python-modules/pendulum/default.nix b/pkgs/development/python-modules/pendulum/default.nix
index 627769ff18c8..bd74e66c6915 100644
--- a/pkgs/development/python-modules/pendulum/default.nix
+++ b/pkgs/development/python-modules/pendulum/default.nix
@@ -60,7 +60,7 @@ buildPythonPackage rec {
     rustPlatform.cargoSetupHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ iconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ iconv ];
 
   propagatedBuildInputs =
     [
@@ -82,7 +82,7 @@ buildPythonPackage rec {
 
   disabledTestPaths =
     [ "tests/benchmarks" ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # PermissionError: [Errno 1] Operation not permitted: '/etc/localtime'
       "tests/testing/test_time_travel.py"
     ];
diff --git a/pkgs/development/python-modules/perfplot/default.nix b/pkgs/development/python-modules/perfplot/default.nix
index 78cd6bdaf999..e71358857354 100644
--- a/pkgs/development/python-modules/perfplot/default.nix
+++ b/pkgs/development/python-modules/perfplot/default.nix
@@ -37,7 +37,7 @@ buildPythonPackage rec {
 
   # This variable is needed to suppress the "Trace/BPT trap: 5" error in Darwin's checkPhase.
   # Not sure of the details, but we can avoid it by changing the matplotlib backend during testing.
-  env.MPLBACKEND = lib.optionalString stdenv.isDarwin "Agg";
+  env.MPLBACKEND = lib.optionalString stdenv.hostPlatform.isDarwin "Agg";
 
   nativeCheckInputs = [ pytestCheckHook ];
 
diff --git a/pkgs/development/python-modules/pettingzoo/default.nix b/pkgs/development/python-modules/pettingzoo/default.nix
index 1e03c7734dde..9bb487e85630 100644
--- a/pkgs/development/python-modules/pettingzoo/default.nix
+++ b/pkgs/development/python-modules/pettingzoo/default.nix
@@ -117,7 +117,7 @@ buildPythonPackage rec {
       # ImportError: cannot import name 'pytest_plugins' from 'pettingzoo.classic'
       "test_chess"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Crashes on darwin: `Fatal Python error: Aborted`
       "test_multi_episode_parallel_env_wrapper"
     ];
diff --git a/pkgs/development/python-modules/pgcli/default.nix b/pkgs/development/python-modules/pgcli/default.nix
index 38bbed27eef5..ce812bcdf225 100644
--- a/pkgs/development/python-modules/pgcli/default.nix
+++ b/pkgs/development/python-modules/pgcli/default.nix
@@ -56,7 +56,7 @@ buildPythonPackage rec {
   disabledTests = [
     # requires running postgres
     "test_application_name_in_env"
-  ] ++ lib.optionals stdenv.isDarwin [ "test_application_name_db_uri" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_application_name_db_uri" ];
 
   meta = with lib; {
     description = "Command-line interface for PostgreSQL";
diff --git a/pkgs/development/python-modules/picosvg/default.nix b/pkgs/development/python-modules/picosvg/default.nix
index 2e938d5115d8..f147b22ad97e 100644
--- a/pkgs/development/python-modules/picosvg/default.nix
+++ b/pkgs/development/python-modules/picosvg/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [ pytestCheckHook ];
 
   # a few tests are failing on aarch64
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
 
   meta = with lib; {
     description = "Tool to simplify SVGs";
diff --git a/pkgs/development/python-modules/pillow-heif/default.nix b/pkgs/development/python-modules/pillow-heif/default.nix
index d512839a797c..5c8488b9f17c 100644
--- a/pkgs/development/python-modules/pillow-heif/default.nix
+++ b/pkgs/development/python-modules/pillow-heif/default.nix
@@ -90,12 +90,12 @@ buildPythonPackage rec {
       # Time based
       "test_decode_threads"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # https://github.com/bigcat88/pillow_heif/issues/89
       # not reproducible in nixpkgs
       "test_opencv_crash"
     ]
-    ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       # RuntimeError: Encoder plugin generated an error: Unsupported bit depth: Bit depth not supported by x265
       "test_open_heif_compare_non_standard_modes_data"
       "test_open_save_disable_16bit"
diff --git a/pkgs/development/python-modules/pillow-simd/default.nix b/pkgs/development/python-modules/pillow-simd/default.nix
index e913a10b4fbf..79b046f50cc6 100644
--- a/pkgs/development/python-modules/pillow-simd/default.nix
+++ b/pkgs/development/python-modules/pillow-simd/default.nix
@@ -44,7 +44,7 @@ import ../pillow/generic.nix (
     };
 
     meta = with lib; {
-      broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
+      broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
       homepage = "https://python-pillow.github.io/pillow-perf/";
       description = "Friendly PIL fork - SIMD version";
       longDescription = ''
diff --git a/pkgs/development/python-modules/pillow/generic.nix b/pkgs/development/python-modules/pillow/generic.nix
index 36fe5b0421fe..1ecaea6b205d 100644
--- a/pkgs/development/python-modules/pillow/generic.nix
+++ b/pkgs/development/python-modules/pillow/generic.nix
@@ -37,7 +37,7 @@ buildPythonPackage rec {
       "test_basic"
       "test_custom_metadata"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Disable darwin tests which require executables: `iconutil` and `screencapture`
       "test_grab"
       "test_grabclipboard"
diff --git a/pkgs/development/python-modules/pint-pandas/default.nix b/pkgs/development/python-modules/pint-pandas/default.nix
index 3e7f18366266..67e1f109c8e0 100644
--- a/pkgs/development/python-modules/pint-pandas/default.nix
+++ b/pkgs/development/python-modules/pint-pandas/default.nix
@@ -40,7 +40,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [ pytestCheckHook ];
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Pandas support for pint";
     license = lib.licenses.bsd3;
     homepage = "https://github.com/hgrecco/pint-pandas";
diff --git a/pkgs/development/python-modules/pip-tools/default.nix b/pkgs/development/python-modules/pip-tools/default.nix
index 10f83a4203d8..9d44c2e383e0 100644
--- a/pkgs/development/python-modules/pip-tools/default.nix
+++ b/pkgs/development/python-modules/pip-tools/default.nix
@@ -50,7 +50,7 @@ buildPythonPackage rec {
     tomli-w
   ];
 
-  preCheck = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  preCheck = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     # https://github.com/python/cpython/issues/74570#issuecomment-1093748531
     export no_proxy='*';
   '';
diff --git a/pkgs/development/python-modules/playwright/default.nix b/pkgs/development/python-modules/playwright/default.nix
index 6ad0fe9b1dc6..e27e2a33ca30 100644
--- a/pkgs/development/python-modules/playwright/default.nix
+++ b/pkgs/development/python-modules/playwright/default.nix
@@ -74,7 +74,7 @@ buildPythonPackage rec {
     git
     setuptools-scm
     setuptools
-  ] ++ lib.optionals stdenv.isLinux [ auditwheel ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ auditwheel ];
 
   pythonRelaxDeps = [ "pyee" ];
 
@@ -99,7 +99,7 @@ buildPythonPackage rec {
         driver = playwright-driver;
         browsers = playwright-driver.browsers;
       }
-      // lib.optionalAttrs stdenv.isLinux {
+      // lib.optionalAttrs stdenv.hostPlatform.isLinux {
         inherit (nixosTests) playwright-python;
       };
     updateScript = ./update.sh;
diff --git a/pkgs/development/python-modules/plyer/default.nix b/pkgs/development/python-modules/plyer/default.nix
index 6a77e4a56005..f0398ac86235 100644
--- a/pkgs/development/python-modules/plyer/default.nix
+++ b/pkgs/development/python-modules/plyer/default.nix
@@ -54,7 +54,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "plyer" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Plyer is a platform-independent api to use features commonly found on various platforms";
     homepage = "https://github.com/kivy/plyer";
     license = licenses.mit;
diff --git a/pkgs/development/python-modules/polars/default.nix b/pkgs/development/python-modules/polars/default.nix
index 7535ae218c54..a1eeda11a3af 100644
--- a/pkgs/development/python-modules/polars/default.nix
+++ b/pkgs/development/python-modules/polars/default.nix
@@ -70,7 +70,7 @@ buildPythonPackage rec {
 
   buildInputs =
     [ rust-jemalloc-sys' ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       darwin.apple_sdk.frameworks.AppKit
       darwin.apple_sdk.frameworks.Security
diff --git a/pkgs/development/python-modules/powerline/default.nix b/pkgs/development/python-modules/powerline/default.nix
index 6e1f724a35dd..76bab717715f 100644
--- a/pkgs/development/python-modules/powerline/default.nix
+++ b/pkgs/development/python-modules/powerline/default.nix
@@ -31,7 +31,7 @@ buildPythonPackage rec {
     python-hglib
     pygit2
     pyuv
-  ] ++ lib.optionals (!stdenv.isDarwin) [ i3ipc ];
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ i3ipc ];
 
   # tests are travis-specific
   doCheck = false;
diff --git a/pkgs/development/python-modules/ppft/default.nix b/pkgs/development/python-modules/ppft/default.nix
index 53eaa5657e7a..a2672cc5e45e 100644
--- a/pkgs/development/python-modules/ppft/default.nix
+++ b/pkgs/development/python-modules/ppft/default.nix
@@ -23,7 +23,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [ six ];
 
   # darwin seems to hang
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/development/python-modules/pre-commit-hooks/default.nix b/pkgs/development/python-modules/pre-commit-hooks/default.nix
index 646d2b343518..55058f846d08 100644
--- a/pkgs/development/python-modules/pre-commit-hooks/default.nix
+++ b/pkgs/development/python-modules/pre-commit-hooks/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
 
   # Note: this is not likely to ever work on Darwin
   # https://github.com/pre-commit/pre-commit-hooks/pull/655
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   # the tests require a functional git installation which requires a valid HOME
   # directory.
diff --git a/pkgs/development/python-modules/primer3/default.nix b/pkgs/development/python-modules/primer3/default.nix
index 336042e595d4..83f57c4a70e3 100644
--- a/pkgs/development/python-modules/primer3/default.nix
+++ b/pkgs/development/python-modules/primer3/default.nix
@@ -28,7 +28,7 @@ buildPythonPackage rec {
   nativeBuildInputs = [
     cython
     setuptools
-  ] ++ lib.optionals stdenv.isDarwin [ gcc ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ gcc ];
 
   nativeCheckInputs = [
     click
diff --git a/pkgs/development/python-modules/prox-tv/default.nix b/pkgs/development/python-modules/prox-tv/default.nix
index 7502d2daf3cc..ee2862361081 100644
--- a/pkgs/development/python-modules/prox-tv/default.nix
+++ b/pkgs/development/python-modules/prox-tv/default.nix
@@ -41,7 +41,7 @@ buildPythonPackage {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  disabledTests = [ "test_tvp_1d" ] ++ lib.optionals stdenv.isDarwin [ "test_tv2_1d" ];
+  disabledTests = [ "test_tvp_1d" ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_tv2_1d" ];
 
   meta = with lib; {
     homepage = "https://github.com/albarji/proxTV";
diff --git a/pkgs/development/python-modules/psrpcore/default.nix b/pkgs/development/python-modules/psrpcore/default.nix
index 72c8da5f5407..8003780b86c2 100644
--- a/pkgs/development/python-modules/psrpcore/default.nix
+++ b/pkgs/development/python-modules/psrpcore/default.nix
@@ -43,6 +43,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/jborean93/psrpcore/blob/v${version}/CHANGELOG.md";
     license = licenses.mit;
     maintainers = with maintainers; [ fab ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/psutil/default.nix b/pkgs/development/python-modules/psutil/default.nix
index 4c0a93d2faa4..ee3f390b79af 100644
--- a/pkgs/development/python-modules/psutil/default.nix
+++ b/pkgs/development/python-modules/psutil/default.nix
@@ -34,14 +34,14 @@ buildPythonPackage rec {
 
   buildInputs =
     # workaround for https://github.com/NixOS/nixpkgs/issues/146760
-    lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [ CoreFoundation ]
-    ++ lib.optionals stdenv.isDarwin [ IOKit ];
+    lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [ CoreFoundation ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit ];
 
   nativeCheckInputs = [ pytestCheckHook ];
 
   # Segfaults on darwin:
   # https://github.com/giampaolo/psutil/issues/1715
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   # In addition to the issues listed above there are some that occure due to
   # our sandboxing which we can work around by disabling some tests:
diff --git a/pkgs/development/python-modules/psycopg/default.nix b/pkgs/development/python-modules/psycopg/default.nix
index e74f113f3c84..aaaf362eab3a 100644
--- a/pkgs/development/python-modules/psycopg/default.nix
+++ b/pkgs/development/python-modules/psycopg/default.nix
@@ -174,7 +174,7 @@ buildPythonPackage rec {
       pytestCheckHook
       postgresql
     ]
-    ++ lib.optional (stdenv.isLinux) postgresqlTestHook
+    ++ lib.optional (stdenv.hostPlatform.isLinux) postgresqlTestHook
     ++ passthru.optional-dependencies.c
     ++ passthru.optional-dependencies.pool;
 
@@ -188,7 +188,7 @@ buildPythonPackage rec {
     ''
       cd ..
     ''
-    + lib.optionalString (stdenv.isLinux) ''
+    + lib.optionalString (stdenv.hostPlatform.isLinux) ''
       export PSYCOPG_TEST_DSN="host=/build/run/postgresql user=$PGUSER"
     '';
 
diff --git a/pkgs/development/python-modules/psycopg2/default.nix b/pkgs/development/python-modules/psycopg2/default.nix
index c8959b948fd7..aaab94547a02 100644
--- a/pkgs/development/python-modules/psycopg2/default.nix
+++ b/pkgs/development/python-modules/psycopg2/default.nix
@@ -45,7 +45,7 @@ buildPythonPackage rec {
     sphinx-better-theme
   ];
 
-  buildInputs = [ postgresql ] ++ lib.optionals stdenv.isDarwin [ openssl ];
+  buildInputs = [ postgresql ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ openssl ];
 
   sphinxRoot = "doc/src";
 
diff --git a/pkgs/development/python-modules/psycopg2cffi/default.nix b/pkgs/development/python-modules/psycopg2cffi/default.nix
index b8c86c970a84..4201bd154071 100644
--- a/pkgs/development/python-modules/psycopg2cffi/default.nix
+++ b/pkgs/development/python-modules/psycopg2cffi/default.nix
@@ -40,7 +40,7 @@ buildPythonPackage rec {
   ];
 
   # FATAL: could not create shared memory segment: Operation not permitted
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   nativeCheckInputs = [
     postgresqlTestHook
diff --git a/pkgs/development/python-modules/pwntools/default.nix b/pkgs/development/python-modules/pwntools/default.nix
index 390c65120854..6874fd866e82 100644
--- a/pkgs/development/python-modules/pwntools/default.nix
+++ b/pkgs/development/python-modules/pwntools/default.nix
@@ -82,7 +82,7 @@ buildPythonPackage rec {
     installShellCompletion --bash extra/bash_completion.d/shellcraft
   '';
 
-  postFixup = lib.optionalString (!stdenv.isDarwin) ''
+  postFixup = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mkdir -p "$out/bin"
     makeWrapper "${debugger}/bin/${debuggerName}" "$out/bin/pwntools-gdb"
   '';
diff --git a/pkgs/development/python-modules/py-bip39-bindings/default.nix b/pkgs/development/python-modules/py-bip39-bindings/default.nix
index 24521f5289ac..72ea11e58522 100644
--- a/pkgs/development/python-modules/py-bip39-bindings/default.nix
+++ b/pkgs/development/python-modules/py-bip39-bindings/default.nix
@@ -43,7 +43,7 @@ buildPythonPackage rec {
     maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   nativeCheckInputs = [ pytestCheckHook ];
 
diff --git a/pkgs/development/python-modules/py-cpuinfo/default.nix b/pkgs/development/python-modules/py-cpuinfo/default.nix
index cf734872942d..8485fe8c2837 100644
--- a/pkgs/development/python-modules/py-cpuinfo/default.nix
+++ b/pkgs/development/python-modules/py-cpuinfo/default.nix
@@ -25,7 +25,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [ pytestCheckHook ];
 
   # On Darwin sysctl is used to read CPU information.
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace cpuinfo/cpuinfo.py \
       --replace "len(_program_paths('sysctl')) > 0" "True" \
       --replace "_run_and_get_stdout(['sysctl'" "_run_and_get_stdout(['${sysctl}/bin/sysctl'"
diff --git a/pkgs/development/python-modules/py-libzfs/default.nix b/pkgs/development/python-modules/py-libzfs/default.nix
index 1400a066c522..b5d8e7f4ab29 100644
--- a/pkgs/development/python-modules/py-libzfs/default.nix
+++ b/pkgs/development/python-modules/py-libzfs/default.nix
@@ -31,7 +31,7 @@ buildPythonPackage rec {
   buildInputs = [ zfs ];
 
   # Passing CFLAGS in configureFlags does not work, see https://github.com/truenas/py-libzfs/issues/107
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace configure \
       --replace-fail \
         'CFLAGS="-DCYTHON_FALLTHROUGH"' \
diff --git a/pkgs/development/python-modules/py-sr25519-bindings/default.nix b/pkgs/development/python-modules/py-sr25519-bindings/default.nix
index 51915de513a7..123562c8d21a 100644
--- a/pkgs/development/python-modules/py-sr25519-bindings/default.nix
+++ b/pkgs/development/python-modules/py-sr25519-bindings/default.nix
@@ -35,7 +35,7 @@ buildPythonPackage rec {
     maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   nativeCheckInputs = [
     pytestCheckHook
diff --git a/pkgs/development/python-modules/py3exiv2/default.nix b/pkgs/development/python-modules/py3exiv2/default.nix
index 38bdf6c4c18d..e9f0efe24030 100644
--- a/pkgs/development/python-modules/py3exiv2/default.nix
+++ b/pkgs/development/python-modules/py3exiv2/default.nix
@@ -27,7 +27,7 @@ buildPythonPackage rec {
   ];
 
   # Work around Python distutils compiling C++ with $CC (see issue #26709)
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
 
   pythonImportsCheck = [ "pyexiv2" ];
 
@@ -35,7 +35,7 @@ buildPythonPackage rec {
   doCheck = false;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Python binding to the library exiv2";
     homepage = "https://launchpad.net/py3exiv2";
     license = licenses.gpl3Plus;
diff --git a/pkgs/development/python-modules/pyarrow/default.nix b/pkgs/development/python-modules/pyarrow/default.nix
index 3c9b1d3bc211..e22429f0716f 100644
--- a/pkgs/development/python-modules/pyarrow/default.nix
+++ b/pkgs/development/python-modules/pyarrow/default.nix
@@ -122,7 +122,7 @@ buildPythonPackage rec {
       # expects arrow-cpp headers to be bundled
       "--deselect=pyarrow/tests/test_cpp_internals.py::test_pyarrow_include"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Requires loopback networking
       "--deselect=pyarrow/tests/test_ipc.py::test_socket_"
       "--deselect=pyarrow/tests/test_flight.py::test_never_sends_data"
@@ -136,7 +136,7 @@ buildPythonPackage rec {
       # Repr output is printing number instead of enum name so these tests fail
       "--deselect=pyarrow/tests/test_fs.py::test_get_file_info"
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       # this test requires local networking
       "--deselect=pyarrow/tests/test_fs.py::test_filesystem_from_uri_gcs"
     ];
@@ -152,7 +152,7 @@ buildPythonPackage rec {
       mv pyarrow/conftest.py pyarrow/tests/parent_conftest.py
       substituteInPlace pyarrow/tests/conftest.py --replace ..conftest .parent_conftest
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # OSError: [Errno 24] Too many open files
       ulimit -n 1024
     '';
diff --git a/pkgs/development/python-modules/pyatv/default.nix b/pkgs/development/python-modules/pyatv/default.nix
index bf3fe63b474b..3ffed8bd8acd 100644
--- a/pkgs/development/python-modules/pyatv/default.nix
+++ b/pkgs/development/python-modules/pyatv/default.nix
@@ -95,7 +95,7 @@ buildPythonPackage rec {
       # https://github.com/postlund/pyatv/issues/2365
       "test_simple_dispatch"
     ]
-    ++ lib.optionals (stdenv.isDarwin) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
       # tests/protocols/raop/test_raop_functional.py::test_stream_retransmission[raop_properties2-2-True] - assert False
       "test_stream_retransmission"
     ];
diff --git a/pkgs/development/python-modules/pybind11/default.nix b/pkgs/development/python-modules/pybind11/default.nix
index 6dab8d700d1e..750ee618f9d2 100644
--- a/pkgs/development/python-modules/pybind11/default.nix
+++ b/pkgs/development/python-modules/pybind11/default.nix
@@ -33,7 +33,7 @@ let
   # support for C++17 aligned allocations on macOS.
   # Tell clang we’re targeting 10.13 on x86_64-darwin while continuing to use the default SDK.
   stdenv' =
-    if stdenv.isDarwin && stdenv.isx86_64 then
+    if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64 then
       python.stdenv.override (oldStdenv: {
         buildPlatform = oldStdenv.buildPlatform // {
           darwinMinVersion = "10.13";
@@ -115,7 +115,7 @@ buildPythonPackage rec {
     "tests/extra_setuptools/test_setuphelper.py"
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # expects KeyError, gets RuntimeError
     # https://github.com/pybind/pybind11/issues/4243
     "test_cross_module_exception_translator"
diff --git a/pkgs/development/python-modules/pybluez/default.nix b/pkgs/development/python-modules/pybluez/default.nix
index d3842358db2f..ca745113c592 100644
--- a/pkgs/development/python-modules/pybluez/default.nix
+++ b/pkgs/development/python-modules/pybluez/default.nix
@@ -36,6 +36,6 @@ buildPythonPackage rec {
     homepage = "https://github.com/pybluez/pybluez";
     license = licenses.gpl2;
     maintainers = with maintainers; [ leenaars ];
-    broken = stdenv.isDarwin; # requires pyobjc-core, pyobjc-framework-Cocoa
+    broken = stdenv.hostPlatform.isDarwin; # requires pyobjc-core, pyobjc-framework-Cocoa
   };
 }
diff --git a/pkgs/development/python-modules/pyclip/default.nix b/pkgs/development/python-modules/pyclip/default.nix
index 65f9afc40903..631bebd566bf 100644
--- a/pkgs/development/python-modules/pyclip/default.nix
+++ b/pkgs/development/python-modules/pyclip/default.nix
@@ -30,19 +30,19 @@ buildPythonPackage rec {
 
   nativeCheckInputs =
     [ pytest ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       xclip
       xvfb-run
     ];
 
   checkPhase = ''
     runHook preCheck
-    ${lib.optionalString stdenv.isLinux "xvfb-run -s '-screen 0 800x600x24'"} pytest tests
+    ${lib.optionalString stdenv.hostPlatform.isLinux "xvfb-run -s '-screen 0 800x600x24'"} pytest tests
     runHook postCheck
   '';
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Cross-platform clipboard utilities supporting both binary and text data";
     mainProgram = "pyclip";
     homepage = "https://github.com/spyoungtech/pyclip";
diff --git a/pkgs/development/python-modules/pycookiecheat/default.nix b/pkgs/development/python-modules/pycookiecheat/default.nix
index be5d6f82cba6..97b7d7d48c8d 100644
--- a/pkgs/development/python-modules/pycookiecheat/default.nix
+++ b/pkgs/development/python-modules/pycookiecheat/default.nix
@@ -62,7 +62,7 @@ buildPythonPackage rec {
     "test_load_firefox_cookie_db"
     "test_no_cookies"
     "test_warns_for_string_browser"
-  ] ++ lib.optionals stdenv.isDarwin [ "test_slack_config" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_slack_config" ];
 
   meta = with lib; {
     description = "Borrow cookies from your browser's authenticated session for use in Python scripts";
diff --git a/pkgs/development/python-modules/pycrdt/default.nix b/pkgs/development/python-modules/pycrdt/default.nix
index f95b0d7d21d4..c09682e63612 100644
--- a/pkgs/development/python-modules/pycrdt/default.nix
+++ b/pkgs/development/python-modules/pycrdt/default.nix
@@ -37,7 +37,7 @@ buildPythonPackage rec {
     rustPlatform.maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   dependencies = [ anyio ];
 
diff --git a/pkgs/development/python-modules/pycups/default.nix b/pkgs/development/python-modules/pycups/default.nix
index 79c1646b1059..8a89193a64eb 100644
--- a/pkgs/development/python-modules/pycups/default.nix
+++ b/pkgs/development/python-modules/pycups/default.nix
@@ -17,7 +17,7 @@ buildPythonPackage rec {
     hash = "sha256-hD44XB2/aUmWyoTvAqfzDCg3YDVYj1++rNa64AXPfI0=";
   };
 
-  buildInputs = [ cups ] ++ lib.optional stdenv.isDarwin libiconv;
+  buildInputs = [ cups ] ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   # Wants to connect to CUPS
   doCheck = false;
diff --git a/pkgs/development/python-modules/pycurl/default.nix b/pkgs/development/python-modules/pycurl/default.nix
index 689e23e3c1ae..5f9334ebb1ee 100644
--- a/pkgs/development/python-modules/pycurl/default.nix
+++ b/pkgs/development/python-modules/pycurl/default.nix
@@ -77,7 +77,7 @@ buildPythonPackage rec {
       # https://github.com/pycurl/pycurl/issues/836
       "test_proxy_tlsauth"
     ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
       # Fatal Python error: Segmentation fault
       "cadata_test"
     ];
diff --git a/pkgs/development/python-modules/pydantic-core/default.nix b/pkgs/development/python-modules/pydantic-core/default.nix
index 48e8f7188bce..77d339525878 100644
--- a/pkgs/development/python-modules/pydantic-core/default.nix
+++ b/pkgs/development/python-modules/pydantic-core/default.nix
@@ -47,7 +47,7 @@ let
       typing-extensions
     ];
 
-    buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+    buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
     dependencies = [ typing-extensions ];
 
diff --git a/pkgs/development/python-modules/pydevd/default.nix b/pkgs/development/python-modules/pydevd/default.nix
index 8cb99dd9806f..207e5e5c9edf 100644
--- a/pkgs/development/python-modules/pydevd/default.nix
+++ b/pkgs/development/python-modules/pydevd/default.nix
@@ -72,7 +72,7 @@ buildPythonPackage rec {
       # https://github.com/fabioz/PyDev.Debugger/issues/269
       "test_evaluate_expression"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_multiprocessing_simple"
       "test_evaluate_exception_trace"
     ];
diff --git a/pkgs/development/python-modules/pydicom/default.nix b/pkgs/development/python-modules/pydicom/default.nix
index e2d86333c1cc..94822a24d444 100644
--- a/pkgs/development/python-modules/pydicom/default.nix
+++ b/pkgs/development/python-modules/pydicom/default.nix
@@ -66,11 +66,11 @@ buildPythonPackage {
       # tries to remove a dicom inside $HOME/.pydicom/data/ and download it again
       "test_fetch_data_files"
     ]
-    ++ lib.optionals stdenv.isAarch64 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [
       # https://github.com/pydicom/pydicom/issues/1386
       "test_array"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # flaky, hard to reproduce failure outside hydra
       "test_time_check"
     ];
diff --git a/pkgs/development/python-modules/pyeclib/default.nix b/pkgs/development/python-modules/pyeclib/default.nix
index 0ada1b1306bd..bda40cbeb8d3 100644
--- a/pkgs/development/python-modules/pyeclib/default.nix
+++ b/pkgs/development/python-modules/pyeclib/default.nix
@@ -39,7 +39,7 @@ buildPythonPackage rec {
 
   preBuild =
     let
-      ldLibraryPathEnvName = if stdenv.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
+      ldLibraryPathEnvName = if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
     in
     ''
       # required for the custom _find_library function in setup.py
diff --git a/pkgs/development/python-modules/pyfakefs/default.nix b/pkgs/development/python-modules/pyfakefs/default.nix
index ff29175870ab..0486b2b7f665 100644
--- a/pkgs/development/python-modules/pyfakefs/default.nix
+++ b/pkgs/development/python-modules/pyfakefs/default.nix
@@ -35,7 +35,7 @@ buildPythonPackage rec {
         --replace "test_path_links_not_resolved" "notest_path_links_not_resolved" \
         --replace "test_append_mode_tell_linux_windows" "notest_append_mode_tell_linux_windows"
     ''
-    + (lib.optionalString stdenv.isDarwin ''
+    + (lib.optionalString stdenv.hostPlatform.isDarwin ''
       # this test fails on darwin due to case-insensitive file system
       substituteInPlace pyfakefs/tests/fake_os_test.py \
         --replace "test_rename_dir_to_existing_dir" "notest_rename_dir_to_existing_dir"
diff --git a/pkgs/development/python-modules/pygame-ce/default.nix b/pkgs/development/python-modules/pygame-ce/default.nix
index c4af9f668e72..5c9e2432c822 100644
--- a/pkgs/development/python-modules/pygame-ce/default.nix
+++ b/pkgs/development/python-modules/pygame-ce/default.nix
@@ -77,7 +77,7 @@ buildPythonPackage rec {
         --replace-fail 'path="fc-list"' 'path="${fontconfig}/bin/fc-list"' \
         --replace-fail /usr/X11/bin/fc-list ${fontconfig}/bin/fc-list
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # flaky
       rm test/system_test.py
       substituteInPlace test/meson.build \
@@ -102,7 +102,7 @@ buildPythonPackage rec {
     SDL2_image
     SDL2_mixer
     SDL2_ttf
-  ] ++ lib.optionals stdenv.isDarwin [ AppKit ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ];
 
   nativeCheckInputs = [
     numpy
diff --git a/pkgs/development/python-modules/pygame/default.nix b/pkgs/development/python-modules/pygame/default.nix
index 65315b3243b8..94efd4227e2e 100644
--- a/pkgs/development/python-modules/pygame/default.nix
+++ b/pkgs/development/python-modules/pygame/default.nix
@@ -99,7 +99,7 @@ buildPythonPackage rec {
     SDL2_image
     SDL2_mixer
     SDL2_ttf
-  ] ++ lib.optionals stdenv.isDarwin [ AppKit ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ];
 
   preConfigure = ''
     ${python.pythonOnBuildForHost.interpreter} buildconfig/config.py
diff --git a/pkgs/development/python-modules/pygit2/default.nix b/pkgs/development/python-modules/pygit2/default.nix
index 80cd4b04b409..db08e6efe974 100644
--- a/pkgs/development/python-modules/pygit2/default.nix
+++ b/pkgs/development/python-modules/pygit2/default.nix
@@ -26,7 +26,7 @@ buildPythonPackage rec {
     hash = "sha256-pjVSX/x0EoZp3i9jRgqUydVgljSkh1wKr85RD97sF6w=";
   };
 
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export DYLD_LIBRARY_PATH="${libgit2}/lib"
   '';
 
diff --git a/pkgs/development/python-modules/pygls/default.nix b/pkgs/development/python-modules/pygls/default.nix
index c75cf68715ed..8128de3769b9 100644
--- a/pkgs/development/python-modules/pygls/default.nix
+++ b/pkgs/development/python-modules/pygls/default.nix
@@ -52,7 +52,7 @@ buildPythonPackage rec {
   # Fixes hanging tests on Darwin
   __darwinAllowLocalNetworking = true;
 
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Darwin issue: OSError: [Errno 24] Too many open files
     ulimit -n 1024
   '';
diff --git a/pkgs/development/python-modules/pygmt/default.nix b/pkgs/development/python-modules/pygmt/default.nix
index 77d2669ee0ac..852690233304 100644
--- a/pkgs/development/python-modules/pygmt/default.nix
+++ b/pkgs/development/python-modules/pygmt/default.nix
@@ -68,7 +68,7 @@ buildPythonPackage rec {
     license = licenses.bsd3;
     changelog = "https://github.com/GenericMappingTools/pygmt/releases/tag/v${version}";
     # pygmt.exceptions.GMTCLibNotFoundError: Error loading the GMT shared library '/nix/store/r3xnnqgl89vrnq0kzxx0bmjwzks45mz8-gmt-6.1.1/lib/libgmt.dylib'
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ sikmir ];
   };
 }
diff --git a/pkgs/development/python-modules/pygobject/3.nix b/pkgs/development/python-modules/pygobject/3.nix
index 185e7fd5ddf8..1f4592c7ddcf 100644
--- a/pkgs/development/python-modules/pygobject/3.nix
+++ b/pkgs/development/python-modules/pygobject/3.nix
@@ -46,7 +46,7 @@ buildPythonPackage rec {
   buildInputs = [
     cairo
     glib
-  ] ++ lib.optionals stdenv.isDarwin [ ncurses ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ ncurses ];
 
   propagatedBuildInputs = [
     pycairo
diff --git a/pkgs/development/python-modules/pyhanko/default.nix b/pkgs/development/python-modules/pyhanko/default.nix
index f8cf0d88cbf2..cf46658aec26 100644
--- a/pkgs/development/python-modules/pyhanko/default.nix
+++ b/pkgs/development/python-modules/pyhanko/default.nix
@@ -130,6 +130,6 @@ buildPythonPackage rec {
     maintainers = [ ];
     # Most tests fail with:
     # OSError: One or more parameters passed to a function were not valid.
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/pyheck/default.nix b/pkgs/development/python-modules/pyheck/default.nix
index 7b7e5205447f..fca55ff984b5 100644
--- a/pkgs/development/python-modules/pyheck/default.nix
+++ b/pkgs/development/python-modules/pyheck/default.nix
@@ -40,7 +40,7 @@ buildPythonPackage rec {
     rustPlatform.maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   nativeCheckInputs = [ pytestCheckHook ];
 
diff --git a/pkgs/development/python-modules/pylance/default.nix b/pkgs/development/python-modules/pylance/default.nix
index 95e9cc8326cd..ff66678e664a 100644
--- a/pkgs/development/python-modules/pylance/default.nix
+++ b/pkgs/development/python-modules/pylance/default.nix
@@ -65,7 +65,7 @@ buildPythonPackage rec {
       libiconv
       protobuf
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         Security
@@ -100,7 +100,7 @@ buildPythonPackage rec {
     cd python/python/tests
   '';
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # AttributeError: module 'torch.distributed' has no attribute 'is_initialized'
     "test_convert_int_tensors"
     "test_ground_truth"
@@ -127,6 +127,6 @@ buildPythonPackage rec {
     maintainers = with lib.maintainers; [ natsukium ];
     # test_indices.py ...sss.Fatal Python error: Fatal Python error: Illegal instructionIllegal instruction
     # File "/nix/store/wiiccrs0vd1qbh4j6ki9p40xmamsjix3-python3.12-pylance-0.17.0/lib/python3.12/site-packages/lance/indices.py", line 237 in train_ivf
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 }
diff --git a/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix b/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix
index 33f1b807ac50..18ee261ff694 100644
--- a/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix
+++ b/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix
@@ -71,6 +71,6 @@ buildPythonPackage rec {
     maintainers = with lib.maintainers; [ bcdarwin ];
     # x86-linux: test_encode.py::TestEncodeBuffer failures
     # darwin: numerous test failures, seemingly due to issues setting up test data
-    broken = (stdenv.isAarch64 && stdenv.isLinux) || stdenv.isDarwin;
+    broken = (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) || stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/pylint/default.nix b/pkgs/development/python-modules/pylint/default.nix
index 73976a1d60e0..9076d39d83f6 100644
--- a/pkgs/development/python-modules/pylint/default.nix
+++ b/pkgs/development/python-modules/pylint/default.nix
@@ -101,7 +101,7 @@ buildPythonPackage rec {
       # AssertionError: assert [('specializa..., 'Ancestor')] == [('aggregatio..., 'Ancestor')]
       "test_functional_relation_extraction"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_parallel_execution"
       "test_py3k_jobs_option"
     ];
diff --git a/pkgs/development/python-modules/pymemcache/default.nix b/pkgs/development/python-modules/pymemcache/default.nix
index c80f512e7498..6f570f8d8306 100644
--- a/pkgs/development/python-modules/pymemcache/default.nix
+++ b/pkgs/development/python-modules/pymemcache/default.nix
@@ -40,7 +40,7 @@ buildPythonPackage rec {
     sed -i "/--cov/d" setup.cfg
   '';
 
-  disabledTests = lib.optionals stdenv.is32bit [
+  disabledTests = lib.optionals stdenv.hostPlatform.is32bit [
     # test_compressed_complex is broken on 32-bit platforms
     # this can be removed on the next version bump
     # see also https://github.com/pinterest/pymemcache/pull/480
diff --git a/pkgs/development/python-modules/pymunk/default.nix b/pkgs/development/python-modules/pymunk/default.nix
index cb23141284d7..212e8e54dd24 100644
--- a/pkgs/development/python-modules/pymunk/default.nix
+++ b/pkgs/development/python-modules/pymunk/default.nix
@@ -25,7 +25,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ cffi ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ ApplicationServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ ApplicationServices ];
 
   preBuild = ''
     ${python.pythonOnBuildForHost.interpreter} setup.py build_ext --inplace
diff --git a/pkgs/development/python-modules/pymupdf/default.nix b/pkgs/development/python-modules/pymupdf/default.nix
index f54a8b7a8462..4ee28f0b6208 100644
--- a/pkgs/development/python-modules/pymupdf/default.nix
+++ b/pkgs/development/python-modules/pymupdf/default.nix
@@ -88,7 +88,7 @@ buildPythonPackage rec {
   };
 
   # TODO: manually add mupdf rpath until upstream fixes it
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     for lib in */*.so $out/${python.sitePackages}/*/*.so; do
       install_name_tool -add_rpath ${lib.getLib mupdf-cxx}/lib "$lib"
     done
@@ -175,7 +175,7 @@ buildPythonPackage rec {
       # Exclude lint tests
       "test_flake8"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # darwin does not support OCR right now
       "test_tesseract"
     ];
diff --git a/pkgs/development/python-modules/pync/default.nix b/pkgs/development/python-modules/pync/default.nix
index 9206787f4973..46af3ed5db2f 100644
--- a/pkgs/development/python-modules/pync/default.nix
+++ b/pkgs/development/python-modules/pync/default.nix
@@ -21,7 +21,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [ which ];
   propagatedBuildInputs = [ python-dateutil ];
 
-  preInstall = lib.optionalString stdenv.isDarwin ''
+  preInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i 's|^\([ ]*\)self.bin_path.*$|\1self.bin_path = "${pkgs.terminal-notifier}/bin/terminal-notifier"|' build/lib/pync/TerminalNotifier.py
   '';
 
diff --git a/pkgs/development/python-modules/pynput/default.nix b/pkgs/development/python-modules/pynput/default.nix
index ed6b964f0ca5..6d73c35e5ba6 100644
--- a/pkgs/development/python-modules/pynput/default.nix
+++ b/pkgs/development/python-modules/pynput/default.nix
@@ -44,11 +44,11 @@ buildPythonPackage rec {
 
   propagatedBuildInputs =
     [ six ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       evdev
       xlib
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         ApplicationServices
@@ -61,7 +61,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [ unittestCheckHook ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Library to control and monitor input devices";
     homepage = "https://github.com/moses-palmer/pynput";
     license = licenses.lgpl3;
diff --git a/pkgs/development/python-modules/pyocd/default.nix b/pkgs/development/python-modules/pyocd/default.nix
index 15a0a2dbdbfa..bb10f1881118 100644
--- a/pkgs/development/python-modules/pyocd/default.nix
+++ b/pkgs/development/python-modules/pyocd/default.nix
@@ -63,7 +63,7 @@ buildPythonPackage rec {
     pyusb
     pyyaml
     typing-extensions
-  ] ++ lib.optionals (!stdenv.isLinux) [ hidapi ];
+  ] ++ lib.optionals (!stdenv.hostPlatform.isLinux) [ hidapi ];
 
   pythonImportsCheck = [ "pyocd" ];
 
diff --git a/pkgs/development/python-modules/pyopencl/default.nix b/pkgs/development/python-modules/pyopencl/default.nix
index 6ec97843fa8f..edf4a4bfe7a2 100644
--- a/pkgs/development/python-modules/pyopencl/default.nix
+++ b/pkgs/development/python-modules/pyopencl/default.nix
@@ -27,7 +27,7 @@
 
 let
   os-specific-buildInputs =
-    if stdenv.isDarwin then [ darwin.apple_sdk.frameworks.OpenCL ] else [ ocl-icd ];
+    if stdenv.hostPlatform.isDarwin then [ darwin.apple_sdk.frameworks.OpenCL ] else [ ocl-icd ];
 in
 buildPythonPackage rec {
   pname = "pyopencl";
@@ -92,6 +92,6 @@ buildPythonPackage rec {
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ GaetanLepage ];
     # ld: symbol(s) not found for architecture arm64
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/python-modules/pyopengl/default.nix b/pkgs/development/python-modules/pyopengl/default.nix
index a66fcc6463a4..a4c4b1cbf21d 100644
--- a/pkgs/development/python-modules/pyopengl/default.nix
+++ b/pkgs/development/python-modules/pyopengl/default.nix
@@ -25,7 +25,7 @@ buildPythonPackage rec {
     let
       ext = stdenv.hostPlatform.extensions.sharedLibrary;
     in
-    lib.optionalString (!stdenv.isDarwin) ''
+    lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       # Theses lines are patching the name of dynamic libraries
       # so pyopengl can find them at runtime.
       substituteInPlace OpenGL/platform/glx.py \
diff --git a/pkgs/development/python-modules/pyopengltk/default.nix b/pkgs/development/python-modules/pyopengltk/default.nix
index 2f0440d83daf..b50780336e50 100644
--- a/pkgs/development/python-modules/pyopengltk/default.nix
+++ b/pkgs/development/python-modules/pyopengltk/default.nix
@@ -46,6 +46,6 @@ buildPythonPackage rec {
     maintainers = with lib.maintainers; [ sigmanificient ];
     license = lib.licenses.mit;
     # not supported yet, see: https://github.com/jonwright/pyopengltk/issues/12
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/pyopenssl/default.nix b/pkgs/development/python-modules/pyopenssl/default.nix
index b9691b2a2827..0d8ae7f649eb 100644
--- a/pkgs/development/python-modules/pyopenssl/default.nix
+++ b/pkgs/development/python-modules/pyopenssl/default.nix
@@ -90,7 +90,7 @@ buildPythonPackage rec {
       "test_dump_certificate_request"
       "test_export_text"
     ]
-    ++ lib.optionals stdenv.is32bit [
+    ++ lib.optionals stdenv.hostPlatform.is32bit [
       # https://github.com/pyca/pyopenssl/issues/974
       "test_verify_with_time"
     ];
diff --git a/pkgs/development/python-modules/pyparted/default.nix b/pkgs/development/python-modules/pyparted/default.nix
index ebdd762b6d06..24acecdaf8c2 100644
--- a/pkgs/development/python-modules/pyparted/default.nix
+++ b/pkgs/development/python-modules/pyparted/default.nix
@@ -29,7 +29,7 @@ buildPythonPackage rec {
         s|e\.path\.startswith("/tmp/temp-device-")|"temp-device-" in e.path|
       ' tests/test__ped_ped.py
     ''
-    + lib.optionalString stdenv.isi686 ''
+    + lib.optionalString stdenv.hostPlatform.isi686 ''
       # remove some integers in this test case which overflow on 32bit systems
       sed -i -r -e '/class *UnitGetSizeTestCase/,/^$/{/[0-9]{11}/d}' \
         tests/test__ped_ped.py
diff --git a/pkgs/development/python-modules/pypass/default.nix b/pkgs/development/python-modules/pypass/default.nix
index 784a5e213c3b..1b9dc08d6720 100644
--- a/pkgs/development/python-modules/pypass/default.nix
+++ b/pkgs/development/python-modules/pypass/default.nix
@@ -74,7 +74,7 @@ buildPythonPackage rec {
   disabledTests = [ "test_show_clip" ];
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Password manager pass in Python";
     mainProgram = "pypass";
     homepage = "https://github.com/aviau/python-pass";
diff --git a/pkgs/development/python-modules/pypck/default.nix b/pkgs/development/python-modules/pypck/default.nix
index d2ee3050522f..e39adf256656 100644
--- a/pkgs/development/python-modules/pypck/default.nix
+++ b/pkgs/development/python-modules/pypck/default.nix
@@ -38,7 +38,7 @@ buildPythonPackage rec {
 
   pytestFlagsArray = [ "--asyncio-mode=auto" ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [ "test_connection_lost" ];
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [ "test_connection_lost" ];
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/development/python-modules/pyperscan/default.nix b/pkgs/development/python-modules/pyperscan/default.nix
index fae3060a744a..7f2bde698eb8 100644
--- a/pkgs/development/python-modules/pyperscan/default.nix
+++ b/pkgs/development/python-modules/pyperscan/default.nix
@@ -35,7 +35,7 @@ buildPythonPackage rec {
 
   checkInputs = [ pytestCheckHook ];
 
-  buildInputs = [ vectorscan ] ++ lib.optional stdenv.isDarwin libiconv;
+  buildInputs = [ vectorscan ] ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   pythonImportsCheck = [ "pyperscan" ];
 
diff --git a/pkgs/development/python-modules/pyqt/5.x.nix b/pkgs/development/python-modules/pyqt/5.x.nix
index 2fdd86b3b5ea..5e1c96673555 100644
--- a/pkgs/development/python-modules/pyqt/5.x.nix
+++ b/pkgs/development/python-modules/pyqt/5.x.nix
@@ -23,7 +23,7 @@
   withSerialPort ? false,
   withTools ? false,
   pkgsBuildTarget,
-  dbusSupport ? !stdenv.isDarwin,
+  dbusSupport ? !stdenv.hostPlatform.isDarwin,
 }:
 
 buildPythonPackage rec {
@@ -59,7 +59,7 @@ buildPythonPackage rec {
     # Due to bug in SIP .whl name generation we have to bump minimal macos sdk upto 11.0 for
     # aarch64-darwin. This patch can be removed once SIP will fix it in upstream,
     # see https://github.com/NixOS/nixpkgs/pull/186612#issuecomment-1214635456.
-    + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+    + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
       minimum-macos-version = "11.0"
     ''
     + ''
diff --git a/pkgs/development/python-modules/pyqt/6.x.nix b/pkgs/development/python-modules/pyqt/6.x.nix
index 8c5653826d25..9f031347d354 100644
--- a/pkgs/development/python-modules/pyqt/6.x.nix
+++ b/pkgs/development/python-modules/pyqt/6.x.nix
@@ -118,7 +118,7 @@ buildPythonPackage rec {
       setuptools
     ]
     # ld: library not found for -lcups
-    ++ lib.optionals (withPrintSupport && stdenv.isDarwin) [ cups ];
+    ++ lib.optionals (withPrintSupport && stdenv.hostPlatform.isDarwin) [ cups ];
 
   passthru = {
     inherit sip pyqt6-sip;
@@ -145,7 +145,7 @@ buildPythonPackage rec {
     # ++ lib.optional withConnectivity "PyQt6.QtConnectivity"
     ++ lib.optional withLocation "PyQt6.QtPositioning";
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-address-of-temporary";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-address-of-temporary";
 
   meta = with lib; {
     description = "Python bindings for Qt6";
diff --git a/pkgs/development/python-modules/pyqtgraph/default.nix b/pkgs/development/python-modules/pyqtgraph/default.nix
index 6bfa11c30fcb..629f96d76df4 100644
--- a/pkgs/development/python-modules/pyqtgraph/default.nix
+++ b/pkgs/development/python-modules/pyqtgraph/default.nix
@@ -64,7 +64,7 @@ buildPythonPackage rec {
       # https://github.com/pyqtgraph/pyqtgraph/issues/2110
       "test_PolyLineROI"
     ]
-    ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       # https://github.com/pyqtgraph/pyqtgraph/issues/2645
       "test_rescaleData"
     ];
diff --git a/pkgs/development/python-modules/pyqtwebengine/default.nix b/pkgs/development/python-modules/pyqtwebengine/default.nix
index 60801a0c966f..fe3fab812928 100644
--- a/pkgs/development/python-modules/pyqtwebengine/default.nix
+++ b/pkgs/development/python-modules/pyqtwebengine/default.nix
@@ -60,7 +60,7 @@ buildPythonPackage (
         setuptools
       ]
       ++ lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [ libsForQt5.qtdeclarative ]
-      ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ autoSignDarwinBinariesHook ];
+      ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ autoSignDarwinBinariesHook ];
 
     buildInputs =
       [
diff --git a/pkgs/development/python-modules/pyreadstat/default.nix b/pkgs/development/python-modules/pyreadstat/default.nix
index 12262cdff9cb..56894f1c4df4 100644
--- a/pkgs/development/python-modules/pyreadstat/default.nix
+++ b/pkgs/development/python-modules/pyreadstat/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
     setuptools
   ];
 
-  buildInputs = [ zlib ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = [ zlib ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   dependencies = [
     readstat
diff --git a/pkgs/development/python-modules/pyreqwest-impersonate/default.nix b/pkgs/development/python-modules/pyreqwest-impersonate/default.nix
index 1dc215bf0ee8..8d9406666fe7 100644
--- a/pkgs/development/python-modules/pyreqwest-impersonate/default.nix
+++ b/pkgs/development/python-modules/pyreqwest-impersonate/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
     rustPlatform.maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     SystemConfiguration
   ];
diff --git a/pkgs/development/python-modules/pyscard/default.nix b/pkgs/development/python-modules/pyscard/default.nix
index 3fd9d3c2fbd4..4582cc185203 100644
--- a/pkgs/development/python-modules/pyscard/default.nix
+++ b/pkgs/development/python-modules/pyscard/default.nix
@@ -13,7 +13,7 @@
 
 let
   # Package does not support configuring the pcsc library.
-  withApplePCSC = stdenv.isDarwin;
+  withApplePCSC = stdenv.hostPlatform.isDarwin;
 in
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/pysequoia/default.nix b/pkgs/development/python-modules/pysequoia/default.nix
index 3fb8236f9b71..f2c07cd5e418 100644
--- a/pkgs/development/python-modules/pysequoia/default.nix
+++ b/pkgs/development/python-modules/pysequoia/default.nix
@@ -47,7 +47,7 @@ buildPythonPackage rec {
       openssl
       pcsclite
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreFoundation
       darwin.apple_sdk.frameworks.Security
       libiconv
@@ -62,6 +62,6 @@ buildPythonPackage rec {
     license = licenses.asl20;
     maintainers = with maintainers; [ doronbehar ];
     # Broken since the 0.1.20 update according to ofborg. The errors are not clear...
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/pyshark/default.nix b/pkgs/development/python-modules/pyshark/default.nix
index ba92fdaebd28..7e4cff21d181 100644
--- a/pkgs/development/python-modules/pyshark/default.nix
+++ b/pkgs/development/python-modules/pyshark/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
       # KeyError: 'Packet of index 0 does not exist in capture'
       "test_getting_packet_summary"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # fails on darwin
       # _pickle.PicklingError: logger cannot be pickled
       "test_iterate_empty_psml_capture"
diff --git a/pkgs/development/python-modules/pyside2/default.nix b/pkgs/development/python-modules/pyside2/default.nix
index d228e3fde29f..2a3ff3c5ad34 100644
--- a/pkgs/development/python-modules/pyside2/default.nix
+++ b/pkgs/development/python-modules/pyside2/default.nix
@@ -97,6 +97,6 @@ stdenv.mkDerivation rec {
     homepage = "https://wiki.qt.io/Qt_for_Python";
     maintainers = with maintainers; [ gebner ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/pyside6/default.nix b/pkgs/development/python-modules/pyside6/default.nix
index 2dc0078c369a..7addb26e7167 100644
--- a/pkgs/development/python-modules/pyside6/default.nix
+++ b/pkgs/development/python-modules/pyside6/default.nix
@@ -71,24 +71,24 @@ stdenv.mkDerivation (finalAttrs: {
           'string(FIND "''${_module_dir}" "''${_core_abs_dir}" found_basepath)' \
           'set (found_basepath 0)'
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace cmake/PySideHelpers.cmake \
         --replace-fail \
           "Designer" ""
     '';
 
   # "Couldn't find libclang.dylib You will likely need to add it manually to PATH to ensure the build succeeds."
-  env = lib.optionalAttrs stdenv.isDarwin { LLVM_INSTALL_DIR = "${llvmPackages.libclang.lib}/lib"; };
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin { LLVM_INSTALL_DIR = "${llvmPackages.libclang.lib}/lib"; };
 
   nativeBuildInputs = [
     cmake
     ninja
     python
     pythonImportsCheckHook
-  ] ++ lib.optionals stdenv.isDarwin [ moveBuildTree ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ moveBuildTree ];
 
   buildInputs =
-    if stdenv.isLinux then
+    if stdenv.hostPlatform.isLinux then
       # qtwebengine fails under darwin
       # see https://github.com/NixOS/nixpkgs/pull/312987
       packages ++ [ python.pkgs.qt6.qtwebengine ]
diff --git a/pkgs/development/python-modules/pysilero-vad/default.nix b/pkgs/development/python-modules/pysilero-vad/default.nix
index bee85a4b2bc3..020677f05e6a 100644
--- a/pkgs/development/python-modules/pysilero-vad/default.nix
+++ b/pkgs/development/python-modules/pysilero-vad/default.nix
@@ -42,7 +42,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     # what():  /build/source/include/onnxruntime/core/common/logging/logging.h:294 static const onnxruntime::logging::Logger& onnxruntime::logging::LoggingManager::DefaultLogger() Attempt to use DefaultLogger but none has been registered.
-    broken = stdenv.isAarch64 && stdenv.isLinux;
+    broken = stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux;
     description = "Pre-packaged voice activity detector using silero-vad";
     homepage = "https://github.com/rhasspy/pysilero-vad";
     changelog = "https://github.com/rhasspy/pysilero-vad/blob/${src.rev}/CHANGELOG.md";
diff --git a/pkgs/development/python-modules/pysptk/default.nix b/pkgs/development/python-modules/pysptk/default.nix
index f6f0de014d36..e148d8af8b06 100644
--- a/pkgs/development/python-modules/pysptk/default.nix
+++ b/pkgs/development/python-modules/pysptk/default.nix
@@ -40,7 +40,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "pysptk" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Wrapper for Speech Signal Processing Toolkit (SPTK)";
     homepage = "https://pysptk.readthedocs.io/";
     license = licenses.mit;
diff --git a/pkgs/development/python-modules/pystatgrab/default.nix b/pkgs/development/python-modules/pystatgrab/default.nix
index 04d460bdf558..942fe48d95b5 100644
--- a/pkgs/development/python-modules/pystatgrab/default.nix
+++ b/pkgs/development/python-modules/pystatgrab/default.nix
@@ -39,7 +39,7 @@ buildPythonPackage rec {
 
   buildInputs = [
     libstatgrab
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ IOKit ]);
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ IOKit ]);
 
   nativeCheckInputs = [ unittestCheckHook ];
 
diff --git a/pkgs/development/python-modules/pysvn/default.nix b/pkgs/development/python-modules/pysvn/default.nix
index 3df9edb39f9c..319398fdec91 100644
--- a/pkgs/development/python-modules/pysvn/default.nix
+++ b/pkgs/development/python-modules/pysvn/default.nix
@@ -37,7 +37,7 @@ buildPythonPackage rec {
     expat
     neon
     openssl
-  ] ++ lib.optionals stdenv.isLinux [ e2fsprogs ] ++ lib.optionals stdenv.isDarwin [ gcc ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ e2fsprogs ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ gcc ];
 
   preConfigure = ''
     cd Source
@@ -84,6 +84,6 @@ buildPythonPackage rec {
     license = licenses.asl20;
     maintainers = with maintainers; [ dotlambda ];
     # g++: command not found
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/pytest-ansible/default.nix b/pkgs/development/python-modules/pytest-ansible/default.nix
index 8d3b1bfdeb76..bc8106a999a6 100644
--- a/pkgs/development/python-modules/pytest-ansible/default.nix
+++ b/pkgs/development/python-modules/pytest-ansible/default.nix
@@ -62,7 +62,7 @@ buildPythonPackage rec {
       "test_connection_failure_v2"
       "test_connection_failure_extra_inventory_v2"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # These tests fail in the Darwin sandbox
       "test_ansible_facts"
       "test_func"
@@ -74,7 +74,7 @@ buildPythonPackage rec {
       # Test want s to execute pytest in a subprocess
       "tests/integration/test_molecule.py"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # These tests fail in the Darwin sandbox
       "tests/test_adhoc.py"
       "tests/test_adhoc_result.py"
diff --git a/pkgs/development/python-modules/pytest-flask/default.nix b/pkgs/development/python-modules/pytest-flask/default.nix
index 477be61ebefd..f4132d9512f9 100644
--- a/pkgs/development/python-modules/pytest-flask/default.nix
+++ b/pkgs/development/python-modules/pytest-flask/default.nix
@@ -36,7 +36,7 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "pytest_flask" ];
 
-  pytestFlagsArray = lib.optionals stdenv.isDarwin [ "--ignore=tests/test_live_server.py" ];
+  pytestFlagsArray = lib.optionals stdenv.hostPlatform.isDarwin [ "--ignore=tests/test_live_server.py" ];
 
   meta = with lib; {
     description = "Set of pytest fixtures to test Flask applications";
diff --git a/pkgs/development/python-modules/pytest-forked/default.nix b/pkgs/development/python-modules/pytest-forked/default.nix
index 64c43164a01b..6a508417e2e1 100644
--- a/pkgs/development/python-modules/pytest-forked/default.nix
+++ b/pkgs/development/python-modules/pytest-forked/default.nix
@@ -54,7 +54,7 @@ buildPythonPackage rec {
   ];
 
   disabledTests =
-    if (pythonAtLeast "3.12" && stdenv.isDarwin && stdenv.isx86_64) then
+    if (pythonAtLeast "3.12" && stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) then
       [
         # non reproducible test failure on hydra, works on community builder
         # https://hydra.nixos.org/build/252537267
diff --git a/pkgs/development/python-modules/pytest-recording/default.nix b/pkgs/development/python-modules/pytest-recording/default.nix
index 23471054526c..dd9e84b3517e 100644
--- a/pkgs/development/python-modules/pytest-recording/default.nix
+++ b/pkgs/development/python-modules/pytest-recording/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
 
   disabledTests =
     [ "test_block_network_with_allowed_hosts" ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Missing socket.AF_NETLINK
       "test_other_socket"
     ];
diff --git a/pkgs/development/python-modules/python-can/default.nix b/pkgs/development/python-modules/python-can/default.nix
index 26bd3a27474e..8224de600ae8 100644
--- a/pkgs/development/python-modules/python-can/default.nix
+++ b/pkgs/development/python-modules/python-can/default.nix
@@ -74,7 +74,7 @@ buildPythonPackage rec {
       "test_pack_unpack"
       "test_receive"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # timing sensitive
       "test_general"
       "test_gap"
diff --git a/pkgs/development/python-modules/python-engineio/default.nix b/pkgs/development/python-modules/python-engineio/default.nix
index a7eb7fe8dd17..6a534a249f1f 100644
--- a/pkgs/development/python-modules/python-engineio/default.nix
+++ b/pkgs/development/python-modules/python-engineio/default.nix
@@ -53,9 +53,9 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
-  preCheck = lib.optionalString stdenv.isLinux ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isLinux ''
     echo "nameserver 127.0.0.1" > resolv.conf
     export NIX_REDIRECTS=/etc/protocols=${iana-etc}/etc/protocols:/etc/resolv.conf=$(realpath resolv.conf) \
       LD_PRELOAD=${libredirect}/lib/libredirect.so
diff --git a/pkgs/development/python-modules/python-etcd/default.nix b/pkgs/development/python-modules/python-etcd/default.nix
index 27d768c4e96e..031efa7b31e3 100644
--- a/pkgs/development/python-modules/python-etcd/default.nix
+++ b/pkgs/development/python-modules/python-etcd/default.nix
@@ -39,7 +39,7 @@ buildPythonPackage {
   ];
 
   # arm64 is an unsupported platform on etcd 3.4. should be able to be removed on >= etcd 3.5
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
 
   preCheck = ''
     for file in "test_auth" "integration/test_simple"; do
diff --git a/pkgs/development/python-modules/python-flirt/default.nix b/pkgs/development/python-modules/python-flirt/default.nix
index 8034a621f8b2..47fdc3cfa08d 100644
--- a/pkgs/development/python-modules/python-flirt/default.nix
+++ b/pkgs/development/python-modules/python-flirt/default.nix
@@ -29,7 +29,7 @@ buildPythonPackage rec {
     maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   buildAndTestSubdir = "pyflirt";
 
diff --git a/pkgs/development/python-modules/python-fx/default.nix b/pkgs/development/python-modules/python-fx/default.nix
index 0d906cd2e379..40b09992d749 100644
--- a/pkgs/development/python-modules/python-fx/default.nix
+++ b/pkgs/development/python-modules/python-fx/default.nix
@@ -81,7 +81,7 @@ buildPythonPackage rec {
   ];
 
   # FAILED tests/test_event_loops.py::TwistedEventLoopTest::test_run - AssertionError: 'callback called with future outcome: True' not found in ['...
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   pythonImportsCheck = [ "pyfx" ];
 
diff --git a/pkgs/development/python-modules/python-gvm/default.nix b/pkgs/development/python-modules/python-gvm/default.nix
index 763999be86ad..6d346d6c638b 100644
--- a/pkgs/development/python-modules/python-gvm/default.nix
+++ b/pkgs/development/python-modules/python-gvm/default.nix
@@ -47,7 +47,7 @@ buildPythonPackage rec {
     # No running SSH available
     "test_connect_error"
     "test_feed_xml_error"
-  ] ++ lib.optionals stdenv.isDarwin [ "test_feed_xml_error" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_feed_xml_error" ];
 
   pythonImportsCheck = [ "gvm" ];
 
diff --git a/pkgs/development/python-modules/python-jenkins/default.nix b/pkgs/development/python-modules/python-jenkins/default.nix
index 8afb965dbaca..e06a0760fbdd 100644
--- a/pkgs/development/python-modules/python-jenkins/default.nix
+++ b/pkgs/development/python-modules/python-jenkins/default.nix
@@ -28,7 +28,7 @@ buildPythonPackage rec {
 
   # test uses timeout mechanism unsafe for use with the "spawn"
   # multiprocessing backend used on macos
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace tests/test_jenkins_sockets.py \
       --replace test_jenkins_open_no_timeout dont_test_jenkins_open_no_timeout
   '';
diff --git a/pkgs/development/python-modules/python-ldap/default.nix b/pkgs/development/python-modules/python-ldap/default.nix
index 4f1c9bd9636e..ebb042b848ec 100644
--- a/pkgs/development/python-modules/python-ldap/default.nix
+++ b/pkgs/development/python-modules/python-ldap/default.nix
@@ -65,7 +65,7 @@ buildPythonPackage rec {
     "test_tls_ext_noca"
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     changelog = "https://github.com/python-ldap/python-ldap/releases/tag/python-ldap-${version}";
diff --git a/pkgs/development/python-modules/python-mapnik/default.nix b/pkgs/development/python-modules/python-mapnik/default.nix
index eed723f10d8e..c06251663e0b 100644
--- a/pkgs/development/python-modules/python-mapnik/default.nix
+++ b/pkgs/development/python-modules/python-mapnik/default.nix
@@ -53,7 +53,7 @@ buildPythonPackage rec {
     ./python-mapnik_std_optional.patch
   ];
 
-  stdenv = if python.stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else python.stdenv;
+  stdenv = if python.stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else python.stdenv;
 
   build-system = [ setuptools ];
 
@@ -103,7 +103,7 @@ buildPythonPackage rec {
       # import from $out
       rm -r mapnik
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # Replace the hardcoded /tmp references with $TMPDIR
       sed -i "s,/tmp,$TMPDIR,g" test/python_tests/*.py
     '';
@@ -114,7 +114,7 @@ buildPythonPackage rec {
     "test_passing_pycairo_context_pdf"
     "test_pdf_printing"
     "test_render_with_scale_factor"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "test_passing_pycairo_context_png"
     "test_passing_pycairo_context_svg"
     "test_pycairo_pdf_surface1"
diff --git a/pkgs/development/python-modules/python-redis-lock/default.nix b/pkgs/development/python-modules/python-redis-lock/default.nix
index e50bbeff87ce..a891f0a0e48c 100644
--- a/pkgs/development/python-modules/python-redis-lock/default.nix
+++ b/pkgs/development/python-modules/python-redis-lock/default.nix
@@ -60,7 +60,7 @@ buildPythonPackage rec {
   # For Django tests
   preCheck = "export DJANGO_SETTINGS_MODULE=test_project.settings";
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # fail on Darwin because it defaults to multiprocessing `spawn`
     "test_reset_signalizes"
     "test_reset_all_signalizes"
diff --git a/pkgs/development/python-modules/python-roborock/default.nix b/pkgs/development/python-modules/python-roborock/default.nix
index add99dfb341d..289a4e41005e 100644
--- a/pkgs/development/python-modules/python-roborock/default.nix
+++ b/pkgs/development/python-modules/python-roborock/default.nix
@@ -49,7 +49,7 @@ buildPythonPackage rec {
     dacite
     paho-mqtt
     pycryptodome
-  ] ++ lib.optionals stdenv.isDarwin [ pycryptodomex ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ pycryptodomex ];
 
   nativeCheckInputs = [
     pytest-asyncio
diff --git a/pkgs/development/python-modules/python-rtmidi/default.nix b/pkgs/development/python-modules/python-rtmidi/default.nix
index f29a3097c631..818eeb919b29 100644
--- a/pkgs/development/python-modules/python-rtmidi/default.nix
+++ b/pkgs/development/python-modules/python-rtmidi/default.nix
@@ -43,11 +43,11 @@ buildPythonPackage rec {
 
   buildInputs =
     [ ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       libjack2
       alsa-lib
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreAudio
       CoreMIDI
       CoreServices
diff --git a/pkgs/development/python-modules/python-xmp-toolkit/default.nix b/pkgs/development/python-modules/python-xmp-toolkit/default.nix
index edcb3e0047e7..f5594e983ace 100644
--- a/pkgs/development/python-modules/python-xmp-toolkit/default.nix
+++ b/pkgs/development/python-modules/python-xmp-toolkit/default.nix
@@ -35,7 +35,7 @@ buildPythonPackage {
   '';
 
   # hangs on darwin + sandbox
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   preCheck = ''
     rm test/{test_exempi,test_files}.py
diff --git a/pkgs/development/python-modules/pythonocc-core/default.nix b/pkgs/development/python-modules/pythonocc-core/default.nix
index f01fb4ca467e..755834eecd32 100644
--- a/pkgs/development/python-modules/pythonocc-core/default.nix
+++ b/pkgs/development/python-modules/pythonocc-core/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
     libXi
     fontconfig
     rapidjson
-  ] ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   cmakeFlags = [
     "-Wno-dev"
diff --git a/pkgs/development/python-modules/pytorch-metric-learning/default.nix b/pkgs/development/python-modules/pytorch-metric-learning/default.nix
index 832f2e6666d3..19678c01938e 100644
--- a/pkgs/development/python-modules/pytorch-metric-learning/default.nix
+++ b/pkgs/development/python-modules/pytorch-metric-learning/default.nix
@@ -83,7 +83,7 @@ buildPythonPackage rec {
     "test_get_nearest_neighbors"
     "test_list_of_text"
     "test_untrained_indexer"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # AttributeError: module 'torch.distributed' has no attribute 'init_process_group'
     "test_single_proc"
   ] ++ lib.optionals cudaSupport [
diff --git a/pkgs/development/python-modules/pyudev/default.nix b/pkgs/development/python-modules/pyudev/default.nix
index 13073a59f481..f7b75f0ff22e 100644
--- a/pkgs/development/python-modules/pyudev/default.nix
+++ b/pkgs/development/python-modules/pyudev/default.nix
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     hash = "sha256-LpRUJ6IWdIk7uXYyQB22ITnZHOoe6WE3zHsHrSIZj8c=";
   };
 
-  postPatch = lib.optionalString stdenvNoCC.isLinux ''
+  postPatch = lib.optionalString stdenvNoCC.hostPlatform.isLinux ''
     substituteInPlace src/pyudev/_ctypeslib/utils.py \
       --replace "find_library(name)" "'${lib.getLib udev}/lib/libudev.so'"
   '';
diff --git a/pkgs/development/python-modules/pyunbound/default.nix b/pkgs/development/python-modules/pyunbound/default.nix
index a5d33cbfa440..13357faec593 100644
--- a/pkgs/development/python-modules/pyunbound/default.nix
+++ b/pkgs/development/python-modules/pyunbound/default.nix
@@ -56,7 +56,7 @@ buildPythonPackage rec {
     rm -r $out/bin $out/share $out/include $out/etc/unbound
   ''
   # patchelf is only available on Linux and no patching is needed on darwin
-  + lib.optionalString stdenv.isLinux ''
+  + lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --replace-needed libunbound.so.8 $out/${python.sitePackages}/libunbound.so.8 $out/${python.sitePackages}/_unbound.so
   '';
 
diff --git a/pkgs/development/python-modules/pyvex/default.nix b/pkgs/development/python-modules/pyvex/default.nix
index 4fe56684d50e..f57cf0d0bcc3 100644
--- a/pkgs/development/python-modules/pyvex/default.nix
+++ b/pkgs/development/python-modules/pyvex/default.nix
@@ -30,12 +30,12 @@ buildPythonPackage rec {
     pycparser
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace vex/Makefile-gcc \
       --replace-fail '/usr/bin/ar' 'ar'
   '';
 
-  setupPyBuildFlags = lib.optionals stdenv.isLinux [
+  setupPyBuildFlags = lib.optionals stdenv.hostPlatform.isLinux [
     "--plat-name"
     "linux"
   ];
diff --git a/pkgs/development/python-modules/pyvlx/default.nix b/pkgs/development/python-modules/pyvlx/default.nix
index 0bfb49ebc383..65c469091eea 100644
--- a/pkgs/development/python-modules/pyvlx/default.nix
+++ b/pkgs/development/python-modules/pyvlx/default.nix
@@ -47,6 +47,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/Julius2342/pyvlx/releases/tag/${version}";
     license = with licenses; [ lgpl2Only ];
     maintainers = with maintainers; [ fab ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/qcelemental/default.nix b/pkgs/development/python-modules/qcelemental/default.nix
index e5a2688d0011..71cfa490452b 100644
--- a/pkgs/development/python-modules/qcelemental/default.nix
+++ b/pkgs/development/python-modules/qcelemental/default.nix
@@ -39,7 +39,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "qcelemental" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Periodic table, physical constants and molecule parsing for quantum chemistry";
     homepage = "https://github.com/MolSSI/QCElemental";
     changelog = "https://github.com/MolSSI/QCElemental/blob/v${version}/docs/changelog.rst";
diff --git a/pkgs/development/python-modules/qcodes-contrib-drivers/default.nix b/pkgs/development/python-modules/qcodes-contrib-drivers/default.nix
index 4c2db9b41f5c..d6bd8c809582 100644
--- a/pkgs/development/python-modules/qcodes-contrib-drivers/default.nix
+++ b/pkgs/development/python-modules/qcodes-contrib-drivers/default.nix
@@ -50,11 +50,11 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "qcodes_contrib_drivers" ];
 
   disabledTests =
-    lib.optionals (stdenv.isDarwin) [
+    lib.optionals (stdenv.hostPlatform.isDarwin) [
       # At index 13 diff: 'sour6:volt 0.29000000000000004' != 'sour6:volt 0.29'
       "test_stability_diagram_external"
     ]
-    ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
       # AssertionError: assert ['outp:trig4:...9999996', ...] == ['outp:trig4:...t 0.266', ...]
       "test_stability_diagram_external"
     ];
diff --git a/pkgs/development/python-modules/qcs-sdk-python/default.nix b/pkgs/development/python-modules/qcs-sdk-python/default.nix
index 4d0d1ffe38c7..854ed41a3437 100644
--- a/pkgs/development/python-modules/qcs-sdk-python/default.nix
+++ b/pkgs/development/python-modules/qcs-sdk-python/default.nix
@@ -53,7 +53,7 @@ buildPythonPackage rec {
     tracing-opentelemetry = [ opentelemetry-api ];
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
     libiconv
diff --git a/pkgs/development/python-modules/qiskit-ignis/default.nix b/pkgs/development/python-modules/qiskit-ignis/default.nix
index a5744586b1a5..a51ad99805b9 100644
--- a/pkgs/development/python-modules/qiskit-ignis/default.nix
+++ b/pkgs/development/python-modules/qiskit-ignis/default.nix
@@ -64,7 +64,7 @@ buildPythonPackage rec {
     [
       "test_tensored_meas_cal_on_circuit" # Flaky test, occasionally returns result outside bounds
     ]
-    ++ lib.optionals stdenv.isAarch64 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [
       "test_fitters" # Fails check that arrays are close. Might be due to aarch64 math issues.
     ];
 
diff --git a/pkgs/development/python-modules/qiskit-terra/default.nix b/pkgs/development/python-modules/qiskit-terra/default.nix
index 44ae18a933d0..eb433a22e8ef 100644
--- a/pkgs/development/python-modules/qiskit-terra/default.nix
+++ b/pkgs/development/python-modules/qiskit-terra/default.nix
@@ -80,7 +80,7 @@ buildPythonPackage rec {
     rustPlatform.cargoSetupHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   cargoDeps = rustPlatform.fetchCargoTarball {
     inherit src;
diff --git a/pkgs/development/python-modules/qscintilla-qt5/default.nix b/pkgs/development/python-modules/qscintilla-qt5/default.nix
index bab2320b0d6f..2ef0d3280f83 100644
--- a/pkgs/development/python-modules/qscintilla-qt5/default.nix
+++ b/pkgs/development/python-modules/qscintilla-qt5/default.nix
@@ -35,7 +35,7 @@ buildPythonPackage rec {
     pythonPackages.setuptools
   ];
   buildInputs = [ qtbase ];
-  propagatedBuildInputs = [ pyqt5 ] ++ lib.optionals stdenv.isDarwin [ qtmacextras ];
+  propagatedBuildInputs = [ pyqt5 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ qtmacextras ];
 
   dontWrapQtApps = true;
 
@@ -47,7 +47,7 @@ buildPythonPackage rec {
       echo 'sip-include-dirs = [ "${pyqt5}/${python.sitePackages}/PyQt5/bindings"]' \
          >> pyproject.toml
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace project.py \
         --replace \
         "if self.project.qsci_external_lib:
diff --git a/pkgs/development/python-modules/questionary/default.nix b/pkgs/development/python-modules/questionary/default.nix
index ea6844159930..9663e8e1fdd1 100644
--- a/pkgs/development/python-modules/questionary/default.nix
+++ b/pkgs/development/python-modules/questionary/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     ulimit -n 1024
   '';
 
diff --git a/pkgs/development/python-modules/quil/default.nix b/pkgs/development/python-modules/quil/default.nix
index 79f6a4c6ed06..98175f1cbbda 100644
--- a/pkgs/development/python-modules/quil/default.nix
+++ b/pkgs/development/python-modules/quil/default.nix
@@ -38,7 +38,7 @@ buildPythonPackage rec {
     rustPlatform.maturinBuildHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   dependencies = [ numpy ];
 
diff --git a/pkgs/development/python-modules/rapidfuzz/default.nix b/pkgs/development/python-modules/rapidfuzz/default.nix
index 02ef0d753fae..64246e6835ee 100644
--- a/pkgs/development/python-modules/rapidfuzz/default.nix
+++ b/pkgs/development/python-modules/rapidfuzz/default.nix
@@ -56,7 +56,7 @@ buildPythonPackage rec {
     ''
       export RAPIDFUZZ_BUILD_EXTENSION=1
     ''
-    + lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) ''
+    + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) ''
       export CMAKE_ARGS="-DCMAKE_CXX_COMPILER_AR=$AR -DCMAKE_CXX_COMPILER_RANLIB=$RANLIB"
     '';
 
@@ -74,7 +74,7 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  disabledTests = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  disabledTests = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     # segfaults
     "test_cdist"
   ];
diff --git a/pkgs/development/python-modules/rapidocr-onnxruntime/default.nix b/pkgs/development/python-modules/rapidocr-onnxruntime/default.nix
index eef3e3b975ce..5739ca88b3b0 100644
--- a/pkgs/development/python-modules/rapidocr-onnxruntime/default.nix
+++ b/pkgs/development/python-modules/rapidocr-onnxruntime/default.nix
@@ -115,7 +115,7 @@ buildPythonPackage {
   meta = {
     # This seems to be related to https://github.com/microsoft/onnxruntime/issues/10038
     # Also some related issue: https://github.com/NixOS/nixpkgs/pull/319053#issuecomment-2167713362
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     changelog = "https://github.com/RapidAI/RapidOCR/releases/tag/v${version}";
     description = "Cross platform OCR Library based on OnnxRuntime";
     homepage = "https://github.com/RapidAI/RapidOCR";
diff --git a/pkgs/development/python-modules/rasterio/default.nix b/pkgs/development/python-modules/rasterio/default.nix
index 8536f1bc981c..3365f12c1bc3 100644
--- a/pkgs/development/python-modules/rasterio/default.nix
+++ b/pkgs/development/python-modules/rasterio/default.nix
@@ -99,7 +99,7 @@ buildPythonPackage rec {
   disabledTests = [
     # flaky
     "test_outer_boundless_pixel_fidelity"
-  ] ++ lib.optionals stdenv.isDarwin [ "test_reproject_error_propagation" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_reproject_error_propagation" ];
 
   pythonImportsCheck = [ "rasterio" ];
 
diff --git a/pkgs/development/python-modules/raylib-python-cffi/default.nix b/pkgs/development/python-modules/raylib-python-cffi/default.nix
index 6069a6bdfe55..eaaa13c96cb3 100644
--- a/pkgs/development/python-modules/raylib-python-cffi/default.nix
+++ b/pkgs/development/python-modules/raylib-python-cffi/default.nix
@@ -66,7 +66,7 @@ buildPythonPackage rec {
       physac
       raygui
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       OpenGL
       Cocoa
       IOKit
diff --git a/pkgs/development/python-modules/rdflib/default.nix b/pkgs/development/python-modules/rdflib/default.nix
index b0f2b4c7cd2a..17bf74863a74 100644
--- a/pkgs/development/python-modules/rdflib/default.nix
+++ b/pkgs/development/python-modules/rdflib/default.nix
@@ -82,7 +82,7 @@ buildPythonPackage rec {
       "test_guess_format_for_parse"
       "rdflib.extras.infixowl"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Require loopback network access
       "TestGraphHTTP"
     ];
diff --git a/pkgs/development/python-modules/readability-lxml/default.nix b/pkgs/development/python-modules/readability-lxml/default.nix
index e676918cb698..7c75c32be269 100644
--- a/pkgs/development/python-modules/readability-lxml/default.nix
+++ b/pkgs/development/python-modules/readability-lxml/default.nix
@@ -39,7 +39,7 @@ buildPythonPackage rec {
     timeout-decorator
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # Test is broken on darwin. Fix in master from https://github.com/buriy/python-readability/pull/178
     "test_many_repeated_spaces"
   ];
diff --git a/pkgs/development/python-modules/requests-kerberos/default.nix b/pkgs/development/python-modules/requests-kerberos/default.nix
index ffa706fcd58b..70a5eebacdb5 100644
--- a/pkgs/development/python-modules/requests-kerberos/default.nix
+++ b/pkgs/development/python-modules/requests-kerberos/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
       pyspnego
     ]
     # Avoid broken Python krb5 package on Darwin
-    ++ lib.optionals (!stdenv.isDarwin) pyspnego.optional-dependencies.kerberos;
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) pyspnego.optional-dependencies.kerberos;
 
   nativeCheckInputs = [
     pytestCheckHook
diff --git a/pkgs/development/python-modules/requests/default.nix b/pkgs/development/python-modules/requests/default.nix
index c8ec3c490ecf..6ffe869c0a6a 100644
--- a/pkgs/development/python-modules/requests/default.nix
+++ b/pkgs/development/python-modules/requests/default.nix
@@ -72,13 +72,13 @@ buildPythonPackage rec {
       "TestRequests"
       "TestTimeout"
     ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
       # Fatal Python error: Aborted
       "test_basic_response"
       "test_text_response"
     ];
 
-  disabledTestPaths = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  disabledTestPaths = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     # Fatal Python error: Aborted
     "tests/test_lowlevel.py"
   ];
diff --git a/pkgs/development/python-modules/rerun-sdk/default.nix b/pkgs/development/python-modules/rerun-sdk/default.nix
index add95c23c9a1..13b7226782ba 100644
--- a/pkgs/development/python-modules/rerun-sdk/default.nix
+++ b/pkgs/development/python-modules/rerun-sdk/default.nix
@@ -75,7 +75,7 @@ buildPythonPackage {
   ];
 
   inherit (rerun) addDlopenRunpaths addDlopenRunpathsPhase;
-  postPhases = lib.optionals stdenv.isLinux [ "addDlopenRunpathsPhase" ];
+  postPhases = lib.optionals stdenv.hostPlatform.isLinux [ "addDlopenRunpathsPhase" ];
 
   disabledTestPaths = [
     # "fixture 'benchmark' not found"
diff --git a/pkgs/development/python-modules/rising/default.nix b/pkgs/development/python-modules/rising/default.nix
index 0e876aecbb05..49b38e2e3426 100644
--- a/pkgs/development/python-modules/rising/default.nix
+++ b/pkgs/development/python-modules/rising/default.nix
@@ -54,7 +54,7 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  disabledTests = lib.optionals (stdenv.isLinux && stdenv.isAarch64) [
+  disabledTests = lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [
     # RuntimeError: DataLoader worker (pid(s) <...>) exited unexpectedly:
     "test_progressive_resize_integration"
   ];
diff --git a/pkgs/development/python-modules/rpy2/default.nix b/pkgs/development/python-modules/rpy2/default.nix
index 1fd58cb565fe..582e35508502 100644
--- a/pkgs/development/python-modules/rpy2/default.nix
+++ b/pkgs/development/python-modules/rpy2/default.nix
@@ -87,7 +87,7 @@ buildPythonPackage rec {
     simplegeneric
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   # https://github.com/rpy2/rpy2/issues/1111
   disabledTests = [
diff --git a/pkgs/development/python-modules/rpyc/default.nix b/pkgs/development/python-modules/rpyc/default.nix
index a9873de90632..336ddca0bf73 100644
--- a/pkgs/development/python-modules/rpyc/default.nix
+++ b/pkgs/development/python-modules/rpyc/default.nix
@@ -59,7 +59,7 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "rpyc" ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Remote Python Call (RPyC), a transparent and symmetric RPC library";
diff --git a/pkgs/development/python-modules/rstcheck/default.nix b/pkgs/development/python-modules/rstcheck/default.nix
index a403db708681..206f9192d92a 100644
--- a/pkgs/development/python-modules/rstcheck/default.nix
+++ b/pkgs/development/python-modules/rstcheck/default.nix
@@ -43,7 +43,7 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # Disabled until https://github.com/rstcheck/rstcheck-core/issues/19 is resolved.
     "test_error_without_config_file_macos"
     "test_file_1_is_bad_without_config_macos"
diff --git a/pkgs/development/python-modules/rtmidi-python/default.nix b/pkgs/development/python-modules/rtmidi-python/default.nix
index 6d8bf78b6d3c..cdb87a0c8657 100644
--- a/pkgs/development/python-modules/rtmidi-python/default.nix
+++ b/pkgs/development/python-modules/rtmidi-python/default.nix
@@ -26,8 +26,8 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ cython_0 ];
   buildInputs =
-    lib.optionals stdenv.isLinux [ alsa-lib ]
-    ++ lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreAudio
       CoreMIDI
       CoreServices
diff --git a/pkgs/development/python-modules/ruff-api/default.nix b/pkgs/development/python-modules/ruff-api/default.nix
index 13bcdefa3496..a363c4c7d32a 100644
--- a/pkgs/development/python-modules/ruff-api/default.nix
+++ b/pkgs/development/python-modules/ruff-api/default.nix
@@ -40,7 +40,7 @@ buildPythonPackage rec {
     rustc
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.CoreServices
     libiconv
diff --git a/pkgs/development/python-modules/ruffus/default.nix b/pkgs/development/python-modules/ruffus/default.nix
index 44a1b8939795..f7c96b10d3e1 100644
--- a/pkgs/development/python-modules/ruffus/default.nix
+++ b/pkgs/development/python-modules/ruffus/default.nix
@@ -28,7 +28,7 @@ buildPythonPackage rec {
   ];
 
   # tests very flaky & hang often on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   # test files do indeed need to be executed separately
   checkPhase = ''
     pushd ruffus/test
diff --git a/pkgs/development/python-modules/rustworkx/default.nix b/pkgs/development/python-modules/rustworkx/default.nix
index b0be3a51573c..3f17b45e2d20 100644
--- a/pkgs/development/python-modules/rustworkx/default.nix
+++ b/pkgs/development/python-modules/rustworkx/default.nix
@@ -38,7 +38,7 @@ buildPythonPackage rec {
     rustc
   ];
 
-  buildInputs = [ numpy ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = [ numpy ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   checkInputs = [
     fixtures
diff --git a/pkgs/development/python-modules/s3transfer/default.nix b/pkgs/development/python-modules/s3transfer/default.nix
index e138d2193a5c..d245c6b0b964 100644
--- a/pkgs/development/python-modules/s3transfer/default.nix
+++ b/pkgs/development/python-modules/s3transfer/default.nix
@@ -38,7 +38,7 @@ buildPythonPackage rec {
     # There was a change in python 3.8 that defaults multiprocessing to spawn instead of fork on macOS
     # See https://bugs.python.org/issue33725 and https://github.com/python/cpython/pull/13603.
     # I suspect the underlying issue here is that upstream tests aren't compatible with spawn multiprocessing, and pass on linux where the default is still fork
-    lib.optionals stdenv.isDarwin [ "tests/unit/test_compat.py" ];
+    lib.optionals stdenv.hostPlatform.isDarwin [ "tests/unit/test_compat.py" ];
 
   pythonImportsCheck = [ "s3transfer" ];
 
diff --git a/pkgs/development/python-modules/safetensors/default.nix b/pkgs/development/python-modules/safetensors/default.nix
index 7228a840d668..584cc1e7d6af 100644
--- a/pkgs/development/python-modules/safetensors/default.nix
+++ b/pkgs/development/python-modules/safetensors/default.nix
@@ -48,7 +48,7 @@ buildPythonPackage rec {
     setuptools-rust
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   nativeCheckInputs = [
     h5py
@@ -64,7 +64,7 @@ buildPythonPackage rec {
       "tests/test_paddle_comparison.py"
       "tests/test_tf_comparison.py"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # don't require mlx (not in Nixpkgs) to run tests
       "tests/test_mlx_comparison.py"
     ];
diff --git a/pkgs/development/python-modules/sanic/default.nix b/pkgs/development/python-modules/sanic/default.nix
index 04f00668ed92..6979926cd7c9 100644
--- a/pkgs/development/python-modules/sanic/default.nix
+++ b/pkgs/development/python-modules/sanic/default.nix
@@ -5,7 +5,7 @@
   aioquic,
   beautifulsoup4,
   buildPythonPackage,
-  doCheck ? !stdenv.isDarwin, # on Darwin, tests fail but pkg still works
+  doCheck ? !stdenv.hostPlatform.isDarwin, # on Darwin, tests fail but pkg still works
   fetchFromGitHub,
   gunicorn,
   html5tagger,
@@ -82,7 +82,7 @@ buildPythonPackage rec {
       # needed for relative paths for some packages
       cd tests
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # OSError: [Errno 24] Too many open files
       ulimit -n 1024
     '';
diff --git a/pkgs/development/python-modules/scikit-image/default.nix b/pkgs/development/python-modules/scikit-image/default.nix
index 369f1bf78e5c..3c0743354787 100644
--- a/pkgs/development/python-modules/scikit-image/default.nix
+++ b/pkgs/development/python-modules/scikit-image/default.nix
@@ -125,7 +125,7 @@ let
           "skimage/io/tests/test_io.py::test_imread_http_url"
           "skimage/restoration/tests/test_rolling_ball.py::test_ndim"
         ]
-        ++ lib.optionals stdenv.isDarwin [
+        ++ lib.optionals stdenv.hostPlatform.isDarwin [
           # Matplotlib tests are broken inside darwin sandbox
           "skimage/feature/tests/test_util.py::test_plot_matches"
           "skimage/filters/tests/test_thresholding.py::TestSimpleImage::test_try_all_threshold"
@@ -133,7 +133,7 @@ let
           # See https://github.com/scikit-image/scikit-image/issues/7061 and https://github.com/scikit-image/scikit-image/issues/7104
           "skimage/measure/tests/test_fit.py"
         ]
-        ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+        ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
           # https://github.com/scikit-image/scikit-image/issues/7104
           "skimage/measure/tests/test_moments.py"
         ]
diff --git a/pkgs/development/python-modules/scikit-learn/default.nix b/pkgs/development/python-modules/scikit-learn/default.nix
index 7e975cb15949..eeba3f116d9d 100644
--- a/pkgs/development/python-modules/scikit-learn/default.nix
+++ b/pkgs/development/python-modules/scikit-learn/default.nix
@@ -80,12 +80,12 @@ buildPythonPackage rec {
   '';
 
   # PermissionError: [Errno 1] Operation not permitted: '/nix/nix-installer'
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   disabledTests = [
     # Skip test_feature_importance_regression - does web fetch
     "test_feature_importance_regression"
-  ] ++ lib.optionals stdenv.isAarch64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isAarch64 [
     # doesn't seem to produce correct results?
     # possibly relevant: https://github.com/scikit-learn/scikit-learn/issues/25838#issuecomment-2308650816
     "test_sparse_input"
diff --git a/pkgs/development/python-modules/scikit-rf/default.nix b/pkgs/development/python-modules/scikit-rf/default.nix
index e4d56716ee2e..3cbaf5f39e45 100644
--- a/pkgs/development/python-modules/scikit-rf/default.nix
+++ b/pkgs/development/python-modules/scikit-rf/default.nix
@@ -68,7 +68,7 @@ buildPythonPackage rec {
     ];
   };
 
-  env = lib.optionalAttrs stdenv.isDarwin { MPLBACKEND = "Agg"; };
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin { MPLBACKEND = "Agg"; };
 
   nativeCheckInputs = [
     pytest-mock
@@ -83,7 +83,7 @@ buildPythonPackage rec {
   # test_calibration.py generates a divide by zero error on darwin
   # https://github.com/scikit-rf/scikit-rf/issues/972
   disabledTestPaths = lib.optional (
-    stdenv.isAarch64 && stdenv.isDarwin
+    stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin
   ) "skrf/calibration/tests/test_calibration.py";
 
   pythonImportsCheck = [ "skrf" ];
diff --git a/pkgs/development/python-modules/scikit-survival/default.nix b/pkgs/development/python-modules/scikit-survival/default.nix
index e2d4ebff287b..78e58877d516 100644
--- a/pkgs/development/python-modules/scikit-survival/default.nix
+++ b/pkgs/development/python-modules/scikit-survival/default.nix
@@ -71,7 +71,7 @@ buildPythonPackage rec {
       "test_survival_svm"
       "test_tree"
     ]
-    ++ lib.optional (stdenv.isDarwin && stdenv.isAarch64)
+    ++ lib.optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)
       # floating point mismatch on aarch64
       # 27079905.88052468 to far from 27079905.880496684
       "test_coxnet";
diff --git a/pkgs/development/python-modules/scipy/default.nix b/pkgs/development/python-modules/scipy/default.nix
index e9b5a8a7ff5d..d6b812cd30ab 100644
--- a/pkgs/development/python-modules/scipy/default.nix
+++ b/pkgs/development/python-modules/scipy/default.nix
@@ -112,7 +112,7 @@ buildPythonPackage {
       pkg-config
       setuptools
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Minimal version required according to:
       # https://github.com/scipy/scipy/blob/v1.14.0/scipy/meson.build#L185-L188
       (xcbuild.override {
@@ -141,7 +141,7 @@ buildPythonPackage {
 
   # The following tests are broken on aarch64-darwin with newer compilers and library versions.
   # See https://github.com/scipy/scipy/issues/18308
-  disabledTests = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  disabledTests = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     "test_a_b_neg_int_after_euler_hypergeometric_transformation"
     "test_dst4_definition_ortho"
     "test_load_mat4_le"
@@ -150,7 +150,7 @@ buildPythonPackage {
     "test_uint64_max"
   ];
 
-  doCheck = !(stdenv.isx86_64 && stdenv.isDarwin);
+  doCheck = !(stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.isDarwin);
 
   preConfigure =
     ''
@@ -187,7 +187,7 @@ buildPythonPackage {
   #
   #         ldr     x0, [x0, ___stack_chk_guard];momd
   #
-  hardeningDisable = lib.optionals (stdenv.isAarch64 && stdenv.isDarwin) [ "stackprotector" ];
+  hardeningDisable = lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin) [ "stackprotector" ];
 
   # remove references to dev dependencies
   postInstall = ''
diff --git a/pkgs/development/python-modules/scrapy/default.nix b/pkgs/development/python-modules/scrapy/default.nix
index f291798d0500..010481da31e8 100644
--- a/pkgs/development/python-modules/scrapy/default.nix
+++ b/pkgs/development/python-modules/scrapy/default.nix
@@ -117,7 +117,7 @@ buildPythonPackage rec {
       # Test fails on Hydra
       "test_start_requests_laziness"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_xmliter_encoding"
       "test_download"
       "test_reactor_default_twisted_reactor_select"
diff --git a/pkgs/development/python-modules/screeninfo/default.nix b/pkgs/development/python-modules/screeninfo/default.nix
index dc32cbb1dd6b..9f1a6c3a6e24 100644
--- a/pkgs/development/python-modules/screeninfo/default.nix
+++ b/pkgs/development/python-modules/screeninfo/default.nix
@@ -46,7 +46,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "screeninfo" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Fetch location and size of physical screens";
     homepage = "https://github.com/rr-/screeninfo";
     license = licenses.mit;
diff --git a/pkgs/development/python-modules/scs/default.nix b/pkgs/development/python-modules/scs/default.nix
index 8736930939e3..e311b2f2f25f 100644
--- a/pkgs/development/python-modules/scs/default.nix
+++ b/pkgs/development/python-modules/scs/default.nix
@@ -46,7 +46,7 @@ buildPythonPackage rec {
   ];
 
   buildInputs =
-    if stdenv.isDarwin then
+    if stdenv.hostPlatform.isDarwin then
       [ Accelerate ]
     else
       [
diff --git a/pkgs/development/python-modules/selenium/default.nix b/pkgs/development/python-modules/selenium/default.nix
index 9009d6bf3c4f..ab3b46b43816 100644
--- a/pkgs/development/python-modules/selenium/default.nix
+++ b/pkgs/development/python-modules/selenium/default.nix
@@ -47,11 +47,11 @@ buildPythonPackage rec {
       cp ../javascript/cdp-support/mutation-listener.js $DST_REMOTE
       cp ../third_party/js/selenium/webdriver.json $DST_FF/webdriver_prefs.json
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $DST_PREFIX/common/macos
       ln -s ${lib.getExe selenium-manager} $DST_PREFIX/common/macos/
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       mkdir -p $DST_PREFIX/common/linux/
       ln -s ${lib.getExe selenium-manager} $DST_PREFIX/common/linux/
     '';
diff --git a/pkgs/development/python-modules/send2trash/default.nix b/pkgs/development/python-modules/send2trash/default.nix
index 06beaabdbcd5..f497e2fef41c 100644
--- a/pkgs/development/python-modules/send2trash/default.nix
+++ b/pkgs/development/python-modules/send2trash/default.nix
@@ -21,7 +21,7 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ setuptools ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   preCheck = ''
     export HOME=$TMPDIR
diff --git a/pkgs/development/python-modules/sentry-sdk/1.nix b/pkgs/development/python-modules/sentry-sdk/1.nix
index 3f57549a1e39..db47e03c017d 100644
--- a/pkgs/development/python-modules/sentry-sdk/1.nix
+++ b/pkgs/development/python-modules/sentry-sdk/1.nix
@@ -102,7 +102,7 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   disabledTests = [
     # Issue with the asseration
diff --git a/pkgs/development/python-modules/sh/default.nix b/pkgs/development/python-modules/sh/default.nix
index 51a4a9d842f6..655e93f4e964 100644
--- a/pkgs/development/python-modules/sh/default.nix
+++ b/pkgs/development/python-modules/sh/default.nix
@@ -43,7 +43,7 @@ buildPythonPackage rec {
       # https://github.com/amoffat/sh/issues/684
       "test_general_signal"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Disable tests that fail on Darwin sandbox
       "test_background_exception"
       "test_cwd"
diff --git a/pkgs/development/python-modules/shapely/default.nix b/pkgs/development/python-modules/shapely/default.nix
index db6e185cb9b2..0959a8e3e0c9 100644
--- a/pkgs/development/python-modules/shapely/default.nix
+++ b/pkgs/development/python-modules/shapely/default.nix
@@ -46,7 +46,7 @@ buildPythonPackage rec {
     cd $out
   '';
 
-  disabledTests = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+  disabledTests = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
     # FIXME(lf-): these logging tests are broken, which is definitely our
     # fault. I've tried figuring out the cause and failed.
     #
diff --git a/pkgs/development/python-modules/shiboken6/default.nix b/pkgs/development/python-modules/shiboken6/default.nix
index e3d5490a6c36..2c491e193d80 100644
--- a/pkgs/development/python-modules/shiboken6/default.nix
+++ b/pkgs/development/python-modules/shiboken6/default.nix
@@ -28,7 +28,7 @@ stdenv'.mkDerivation (finalAttrs: {
   nativeBuildInputs = [
     cmake
     (python.pythonOnBuildForHost.withPackages (ps: [ ps.setuptools ]))
-  ] ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   buildInputs = [
     llvmPackages.llvm
diff --git a/pkgs/development/python-modules/show-in-file-manager/default.nix b/pkgs/development/python-modules/show-in-file-manager/default.nix
index a43b08ee1c9e..a08a874d690c 100644
--- a/pkgs/development/python-modules/show-in-file-manager/default.nix
+++ b/pkgs/development/python-modules/show-in-file-manager/default.nix
@@ -24,7 +24,7 @@ buildPythonPackage rec {
     setuptools
   ];
 
-  propagatedBuildInputs = [ packaging ] ++ lib.optional (stdenv.isLinux) pyxdg;
+  propagatedBuildInputs = [ packaging ] ++ lib.optional (stdenv.hostPlatform.isLinux) pyxdg;
 
   meta = with lib; {
     homepage = "https://github.com/damonlynch/showinfilemanager";
diff --git a/pkgs/development/python-modules/simpful/default.nix b/pkgs/development/python-modules/simpful/default.nix
index 74c88e6a5644..2759c829246e 100644
--- a/pkgs/development/python-modules/simpful/default.nix
+++ b/pkgs/development/python-modules/simpful/default.nix
@@ -54,6 +54,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/aresio/simpful/releases/tag/${version}";
     license = with licenses; [ lgpl3Only ];
     maintainers = with maintainers; [ fab ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/simplejson/default.nix b/pkgs/development/python-modules/simplejson/default.nix
index bbebbfd35867..b8d70a31b7aa 100644
--- a/pkgs/development/python-modules/simplejson/default.nix
+++ b/pkgs/development/python-modules/simplejson/default.nix
@@ -23,7 +23,7 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   pythonImportsCheck = [ "simplejson" ];
 
diff --git a/pkgs/development/python-modules/skia-pathops/default.nix b/pkgs/development/python-modules/skia-pathops/default.nix
index 15806e8b1bce..8e27202ad838 100644
--- a/pkgs/development/python-modules/skia-pathops/default.nix
+++ b/pkgs/development/python-modules/skia-pathops/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
         --replace "build_cmd = [sys.executable, build_skia_py, build_dir]" \
           'build_cmd = [sys.executable, build_skia_py, "--no-fetch-gn", "--no-virtualenv", "--gn-path", "${gn}/bin/gn", build_dir]'
     ''
-    + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+    + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
       substituteInPlace src/cpp/skia-builder/skia/gn/skia/BUILD.gn \
         --replace "-march=armv7-a" "-march=armv8-a" \
         --replace "-mfpu=neon" "" \
@@ -42,7 +42,7 @@ buildPythonPackage rec {
         --replace "defined(SK_CPU_ARM64)" "0"
     ''
     +
-      lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) # old compiler?
+      lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) # old compiler?
         ''
           patch -p1 <<EOF
           --- a/src/cpp/skia-builder/skia/include/private/base/SkTArray.h
@@ -57,9 +57,9 @@ buildPythonPackage rec {
     cython
     ninja
     setuptools-scm
-  ] ++ lib.optionals stdenv.isDarwin [ xcodebuild ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcodebuild ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     ApplicationServices
     OpenGL
   ];
diff --git a/pkgs/development/python-modules/skops/default.nix b/pkgs/development/python-modules/skops/default.nix
index f0d33093d5ef..70df89009fd3 100644
--- a/pkgs/development/python-modules/skops/default.nix
+++ b/pkgs/development/python-modules/skops/default.nix
@@ -53,7 +53,7 @@ buildPythonPackage rec {
       # minor output formatting issue
       "skops/card/_model_card.py"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Segfaults on darwin
       "skops/io/tests/test_persist.py"
     ];
diff --git a/pkgs/development/python-modules/skorch/default.nix b/pkgs/development/python-modules/skorch/default.nix
index 28a8f1771f4e..3e139d4714a8 100644
--- a/pkgs/development/python-modules/skorch/default.nix
+++ b/pkgs/development/python-modules/skorch/default.nix
@@ -60,7 +60,7 @@ buildPythonPackage rec {
       # failing tests
       "test_pickle_load"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # there is a problem with the compiler selection
       "test_fit_and_predict_with_compile"
     ]
diff --git a/pkgs/development/python-modules/skytemple-files/default.nix b/pkgs/development/python-modules/skytemple-files/default.nix
index 8d1087f4ab83..240c0a65d805 100644
--- a/pkgs/development/python-modules/skytemple-files/default.nix
+++ b/pkgs/development/python-modules/skytemple-files/default.nix
@@ -100,6 +100,6 @@ buildPythonPackage rec {
     mainProgram = "skytemple_export_maps";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ marius851000 ];
-    broken = stdenv.isDarwin; # pyobjc is missing
+    broken = stdenv.hostPlatform.isDarwin; # pyobjc is missing
   };
 }
diff --git a/pkgs/development/python-modules/skytemple-rust/default.nix b/pkgs/development/python-modules/skytemple-rust/default.nix
index ed60b724f840..83873d2e0aa3 100644
--- a/pkgs/development/python-modules/skytemple-rust/default.nix
+++ b/pkgs/development/python-modules/skytemple-rust/default.nix
@@ -28,7 +28,7 @@ buildPythonPackage rec {
     hash = "sha256-0a57RmZPztcIeRs7GNYe18JO+LlWoeNWG3nD9cG0XIU=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     Foundation
   ];
diff --git a/pkgs/development/python-modules/sleekxmpp/default.nix b/pkgs/development/python-modules/sleekxmpp/default.nix
index dea81113d390..826b009e0d28 100644
--- a/pkgs/development/python-modules/sleekxmpp/default.nix
+++ b/pkgs/development/python-modules/sleekxmpp/default.nix
@@ -28,7 +28,7 @@ buildPythonPackage rec {
   };
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
     description = "XMPP library for Python";
     license = licenses.mit;
     homepage = "http://sleekxmpp.com/";
diff --git a/pkgs/development/python-modules/smbprotocol/default.nix b/pkgs/development/python-modules/smbprotocol/default.nix
index e531acb40b99..68405f52beff 100644
--- a/pkgs/development/python-modules/smbprotocol/default.nix
+++ b/pkgs/development/python-modules/smbprotocol/default.nix
@@ -34,7 +34,7 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # https://github.com/jborean93/smbprotocol/issues/119
     "test_copymode_local_to_local_symlink_dont_follow"
     "test_copystat_local_to_local_symlink_dont_follow_fail"
diff --git a/pkgs/development/python-modules/snitun/default.nix b/pkgs/development/python-modules/snitun/default.nix
index a0192ee1188e..13a86fb63e9d 100644
--- a/pkgs/development/python-modules/snitun/default.nix
+++ b/pkgs/development/python-modules/snitun/default.nix
@@ -47,7 +47,7 @@ buildPythonPackage rec {
       # AssertionError: Expected 'fileno' to not have been called. Called 1 times.
       "test_client_stop_no_wait"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "test_multiplexer_data_channel_abort_full" # https://github.com/NabuCasa/snitun/issues/61
       # port binding conflicts
       "test_snitun_single_runner_timeout"
diff --git a/pkgs/development/python-modules/somajo/default.nix b/pkgs/development/python-modules/somajo/default.nix
index 5d4e946c8518..bcf489a45330 100644
--- a/pkgs/development/python-modules/somajo/default.nix
+++ b/pkgs/development/python-modules/somajo/default.nix
@@ -27,7 +27,7 @@ buildPythonPackage rec {
   dependencies = [ regex ];
 
   # loops forever
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   pythonImportsCheck = [ "somajo" ];
 
diff --git a/pkgs/development/python-modules/soundfile/default.nix b/pkgs/development/python-modules/soundfile/default.nix
index 819975014f14..3e421ab2ac86 100644
--- a/pkgs/development/python-modules/soundfile/default.nix
+++ b/pkgs/development/python-modules/soundfile/default.nix
@@ -15,7 +15,7 @@ buildPythonPackage rec {
   version = "0.12.1";
   format = "setuptools";
   # https://github.com/bastibe/python-soundfile/issues/157
-  disabled = isPyPy || stdenv.isi686;
+  disabled = isPyPy || stdenv.hostPlatform.isi686;
 
   src = fetchPypi {
     inherit pname version;
diff --git a/pkgs/development/python-modules/sourmash/default.nix b/pkgs/development/python-modules/sourmash/default.nix
index aefb730b229d..8ed0a8157fbc 100644
--- a/pkgs/development/python-modules/sourmash/default.nix
+++ b/pkgs/development/python-modules/sourmash/default.nix
@@ -21,7 +21,7 @@
   pytestCheckHook,
 }:
 let
-  stdenv' = if stdenv.isDarwin then overrideSDK stdenv { darwinMinVersion = "10.14"; } else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv { darwinMinVersion = "10.14"; } else stdenv;
 in
 buildPythonPackage rec {
   pname = "sourmash";
diff --git a/pkgs/development/python-modules/spacy-alignments/default.nix b/pkgs/development/python-modules/spacy-alignments/default.nix
index 66b1c2065512..9315953b5a25 100644
--- a/pkgs/development/python-modules/spacy-alignments/default.nix
+++ b/pkgs/development/python-modules/spacy-alignments/default.nix
@@ -36,7 +36,7 @@ buildPythonPackage rec {
     rustc
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   # Fails because spacy_alignments module cannot be loaded correctly.
   doCheck = false;
diff --git a/pkgs/development/python-modules/spectral-cube/default.nix b/pkgs/development/python-modules/spectral-cube/default.nix
index 444761c46159..1c62233cc042 100644
--- a/pkgs/development/python-modules/spectral-cube/default.nix
+++ b/pkgs/development/python-modules/spectral-cube/default.nix
@@ -60,7 +60,7 @@ buildPythonPackage rec {
 
   # On x86_darwin, this test fails with "Fatal Python error: Aborted"
   # when sandbox = true.
-  disabledTestPaths = lib.optionals stdenv.isDarwin [ "spectral_cube/tests/test_visualization.py" ];
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [ "spectral_cube/tests/test_visualization.py" ];
 
   pythonImportsCheck = [ "spectral_cube" ];
 
diff --git a/pkgs/development/python-modules/sqlalchemy-file/default.nix b/pkgs/development/python-modules/sqlalchemy-file/default.nix
index 3fad04838acd..0cd6d46988ae 100644
--- a/pkgs/development/python-modules/sqlalchemy-file/default.nix
+++ b/pkgs/development/python-modules/sqlalchemy-file/default.nix
@@ -45,7 +45,7 @@ buildPythonPackage rec {
     export LOCAL_PATH="$PWD/.storage"
   '';
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     # very flaky, sandbox issues?
     # libcloud.storage.types.ContainerDoesNotExistError
     # sqlite3.OperationalError: attempt to write a readonly database
diff --git a/pkgs/development/python-modules/sshfs/default.nix b/pkgs/development/python-modules/sshfs/default.nix
index 6eaae84d6f77..f180d5c6c3a8 100644
--- a/pkgs/development/python-modules/sshfs/default.nix
+++ b/pkgs/development/python-modules/sshfs/default.nix
@@ -59,7 +59,7 @@ buildPythonPackage rec {
       # Test requires network access
       "test_config_expansions"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Test fails with sandbox enabled
       "test_checksum"
     ];
diff --git a/pkgs/development/python-modules/starlette-admin/default.nix b/pkgs/development/python-modules/starlette-admin/default.nix
index 41f3a1001345..a60768ef4220 100644
--- a/pkgs/development/python-modules/starlette-admin/default.nix
+++ b/pkgs/development/python-modules/starlette-admin/default.nix
@@ -85,7 +85,7 @@ buildPythonPackage rec {
     export LOCAL_PATH="$PWD/.storage"
   '';
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # flaky, depends on test order
     "test_ensuring_pk"
     # flaky, of-by-one
@@ -99,7 +99,7 @@ buildPythonPackage rec {
       # needs mongodb running on port 27017
       "tests/mongoengine"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # very flaky, sandbox issues?
       # libcloud.storage.types.ContainerDoesNotExistError
       # sqlite3.OperationalError: attempt to write a readonly database
diff --git a/pkgs/development/python-modules/streamlit/default.nix b/pkgs/development/python-modules/streamlit/default.nix
index 1ef214dd0a21..71ce1b81aa9a 100644
--- a/pkgs/development/python-modules/streamlit/default.nix
+++ b/pkgs/development/python-modules/streamlit/default.nix
@@ -76,7 +76,7 @@ buildPythonPackage rec {
     typing-extensions
     tzlocal
     validators
-  ] ++ lib.optionals (!stdenv.isDarwin) [ watchdog ];
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ watchdog ];
 
   # pypi package does not include the tests, but cannot be built with fetchFromGitHub
   doCheck = false;
diff --git a/pkgs/development/python-modules/sudachipy/default.nix b/pkgs/development/python-modules/sudachipy/default.nix
index d722b368756e..20233c1f7d9a 100644
--- a/pkgs/development/python-modules/sudachipy/default.nix
+++ b/pkgs/development/python-modules/sudachipy/default.nix
@@ -31,7 +31,7 @@ buildPythonPackage rec {
     setuptools-rust
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   preBuild = ''
     cd python
diff --git a/pkgs/development/python-modules/sunpy/default.nix b/pkgs/development/python-modules/sunpy/default.nix
index e1bfc94ceab4..34cec394a104 100644
--- a/pkgs/development/python-modules/sunpy/default.nix
+++ b/pkgs/development/python-modules/sunpy/default.nix
@@ -103,7 +103,7 @@ buildPythonPackage rec {
   '';
 
   # darwin has write permission issues
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
 
   preCheck = ''
     export HOME=$(mktemp -d)
diff --git a/pkgs/development/python-modules/supervisor/default.nix b/pkgs/development/python-modules/supervisor/default.nix
index e75998606b63..8a6bb95f3c3c 100644
--- a/pkgs/development/python-modules/supervisor/default.nix
+++ b/pkgs/development/python-modules/supervisor/default.nix
@@ -25,7 +25,7 @@ buildPythonPackage rec {
 
   # wants to write to /tmp/foo which is likely already owned by another
   # nixbld user on hydra
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   nativeCheckInputs = [
     mock
diff --git a/pkgs/development/python-modules/tbm-utils/default.nix b/pkgs/development/python-modules/tbm-utils/default.nix
index d9a0c20070de..9daa9648fe1e 100644
--- a/pkgs/development/python-modules/tbm-utils/default.nix
+++ b/pkgs/development/python-modules/tbm-utils/default.nix
@@ -61,14 +61,14 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # Skip on macOS because /etc/localtime is accessed through the pendulum
     # library, which is not allowed in a sandboxed build.
     "test_create_parser_filter_dates"
     "test_parse_args"
   ];
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     # Skip on macOS because /etc/localtime is accessed through the pendulum
     # library, which is not allowed in a sandboxed build.
     "tests/test_datetime.py"
diff --git a/pkgs/development/python-modules/tensorboardx/default.nix b/pkgs/development/python-modules/tensorboardx/default.nix
index e0c4231be405..aab6bc7e9df6 100644
--- a/pkgs/development/python-modules/tensorboardx/default.nix
+++ b/pkgs/development/python-modules/tensorboardx/default.nix
@@ -62,7 +62,7 @@ buildPythonPackage rec {
       # Requires network access (FileNotFoundError: [Errno 2] No such file or directory: 'wget')
       "test_onnx_graph"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Fails with a mysterious error in pytorch:
       # RuntimeError: required keyword attribute 'name' has the wrong type
       "test_pytorch_graph"
diff --git a/pkgs/development/python-modules/tensordict/default.nix b/pkgs/development/python-modules/tensordict/default.nix
index 697a8b29b956..1ad591e13be6 100644
--- a/pkgs/development/python-modules/tensordict/default.nix
+++ b/pkgs/development/python-modules/tensordict/default.nix
@@ -91,7 +91,7 @@ buildPythonPackage rec {
       "test_map_iter_interrupt_early"
     ];
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     # torch._dynamo.exc.BackendCompilerFailed: backend='inductor' raised:
     # OpenMP support not found.
     "test/test_compile.py"
diff --git a/pkgs/development/python-modules/tensorflow-probability/default.nix b/pkgs/development/python-modules/tensorflow-probability/default.nix
index dd80ee581ee6..7b059969ebb6 100644
--- a/pkgs/development/python-modules/tensorflow-probability/default.nix
+++ b/pkgs/development/python-modules/tensorflow-probability/default.nix
@@ -63,7 +63,7 @@ let
     bazel = bazel_6;
 
     bazelTargets = [ ":pip_pkg" ];
-    LIBTOOL = lib.optionalString stdenv.isDarwin "${cctools}/bin/libtool";
+    LIBTOOL = lib.optionalString stdenv.hostPlatform.isDarwin "${cctools}/bin/libtool";
 
     fetchAttrs = {
       sha256 = "sha256-TbWcWYidyXuAMgBnO2/k0NKCzc4wThf2uUeC3QxdBJY=";
diff --git a/pkgs/development/python-modules/tensorflow/bin.nix b/pkgs/development/python-modules/tensorflow/bin.nix
index b0371e7a20f2..c187737eeead 100644
--- a/pkgs/development/python-modules/tensorflow/bin.nix
+++ b/pkgs/development/python-modules/tensorflow/bin.nix
@@ -45,7 +45,7 @@
 # - the source build doesn't work on NVIDIA Jetson platforms
 
 # unsupported combination
-assert !(stdenv.isDarwin && cudaSupport);
+assert !(stdenv.hostPlatform.isDarwin && cudaSupport);
 
 let
   packages = import ./binary-hashes.nix;
@@ -160,7 +160,7 @@ buildPythonPackage {
 
       rpath = lib.makeLibraryPath (libpaths ++ cudapaths);
     in
-    lib.optionalString stdenv.isLinux ''
+    lib.optionalString stdenv.hostPlatform.isLinux ''
       # This is an array containing all the directories in the tensorflow2
       # package that contain .so files.
       #
diff --git a/pkgs/development/python-modules/tensorflow/default.nix b/pkgs/development/python-modules/tensorflow/default.nix
index 31639d48f934..69df6b23d50a 100644
--- a/pkgs/development/python-modules/tensorflow/default.nix
+++ b/pkgs/development/python-modules/tensorflow/default.nix
@@ -107,7 +107,7 @@ let
   stdenv =
     if cudaSupport then
       cudaPackages.backendStdenv
-    else if originalStdenv.isDarwin then
+    else if originalStdenv.hostPlatform.isDarwin then
       llvmPackages.stdenv
     else
       originalStdenv;
@@ -274,7 +274,7 @@ let
     '';
   };
   bazel-build =
-    if stdenv.isDarwin then
+    if stdenv.hostPlatform.isDarwin then
       _bazel-build.overrideAttrs (prev: {
         bazelFlags = prev.bazelFlags ++ [
           "--override_repository=rules_cc=${rules_cc_darwin_patched}"
@@ -341,16 +341,16 @@ let
         cudnnMerged
       ]
       ++ lib.optionals mklSupport [ mkl ]
-      ++ lib.optionals stdenv.isDarwin [
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [
         Foundation
         Security
       ]
-      ++ lib.optionals (!stdenv.isDarwin) [ nsync ];
+      ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ nsync ];
 
     # arbitrarily set to the current latest bazel version, overly careful
     TF_IGNORE_MAX_BAZEL_VERSION = true;
 
-    LIBTOOL = lib.optionalString stdenv.isDarwin "${cctools}/bin/libtool";
+    LIBTOOL = lib.optionalString stdenv.hostPlatform.isDarwin "${cctools}/bin/libtool";
 
     # Take as many libraries from the system as possible. Keep in sync with
     # list of valid syslibs in
@@ -395,7 +395,7 @@ let
         "wrapt"
         "zlib"
       ]
-      ++ lib.optionals (!stdenv.isDarwin) [
+      ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
         "nsync" # fails to build on darwin
       ]
     );
@@ -598,12 +598,12 @@ let
         maintainers = with lib.maintainers; [ abbradar ];
         platforms = with lib.platforms; linux ++ darwin;
         broken =
-          stdenv.isDarwin
+          stdenv.hostPlatform.isDarwin
           || !(xlaSupport -> cudaSupport)
           || !(cudaSupport -> builtins.hasAttr cudnnAttribute cudaPackages)
           || !(cudaSupport -> cudaPackages ? cudatoolkit);
       }
-      // lib.optionalAttrs stdenv.isDarwin {
+      // lib.optionalAttrs stdenv.hostPlatform.isDarwin {
         timeout = 86400; # 24 hours
         maxSilent = 14400; # 4h, double the default of 7200s
       };
diff --git a/pkgs/development/python-modules/tensorstore/default.nix b/pkgs/development/python-modules/tensorstore/default.nix
index 90a550f42ab3..7a550a5c4ede 100644
--- a/pkgs/development/python-modules/tensorstore/default.nix
+++ b/pkgs/development/python-modules/tensorstore/default.nix
@@ -42,7 +42,7 @@ buildPythonPackage rec {
         or (throw "unsupported system/python version combination");
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   dependencies = [
     ml-dtypes
diff --git a/pkgs/development/python-modules/testpath/default.nix b/pkgs/development/python-modules/testpath/default.nix
index 7403d9c2af24..913226ddc78b 100644
--- a/pkgs/development/python-modules/testpath/default.nix
+++ b/pkgs/development/python-modules/testpath/default.nix
@@ -27,7 +27,7 @@ buildPythonPackage rec {
     rm testpath/cli-32.exe testpath/cli-64.exe
   '';
 
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Work around https://github.com/jupyter/testpath/issues/24
     export TMPDIR="/tmp"
   '';
diff --git a/pkgs/development/python-modules/thinc/default.nix b/pkgs/development/python-modules/thinc/default.nix
index d4c35796a270..99126084f28a 100644
--- a/pkgs/development/python-modules/thinc/default.nix
+++ b/pkgs/development/python-modules/thinc/default.nix
@@ -58,7 +58,7 @@ buildPythonPackage rec {
     setuptools
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Accelerate
     CoreFoundation
     CoreGraphics
diff --git a/pkgs/development/python-modules/tiktoken/default.nix b/pkgs/development/python-modules/tiktoken/default.nix
index ffcead40165d..9ce945ebf7c3 100644
--- a/pkgs/development/python-modules/tiktoken/default.nix
+++ b/pkgs/development/python-modules/tiktoken/default.nix
@@ -54,7 +54,7 @@ buildPythonPackage {
     rustc
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   dependencies = [
     requests
diff --git a/pkgs/development/python-modules/tinygrad/default.nix b/pkgs/development/python-modules/tinygrad/default.nix
index 387ee633264e..92aa341dd6ce 100644
--- a/pkgs/development/python-modules/tinygrad/default.nix
+++ b/pkgs/development/python-modules/tinygrad/default.nix
@@ -82,7 +82,7 @@ buildPythonPackage rec {
     [
       numpy
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # pyobjc-framework-libdispatch
       # pyobjc-framework-metal
     ];
@@ -177,6 +177,6 @@ buildPythonPackage rec {
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ GaetanLepage ];
     # Requires unpackaged pyobjc-framework-libdispatch and pyobjc-framework-metal
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/tkinter/default.nix b/pkgs/development/python-modules/tkinter/default.nix
index beba9834e703..e051bbf86d98 100644
--- a/pkgs/development/python-modules/tkinter/default.nix
+++ b/pkgs/development/python-modules/tkinter/default.nix
@@ -21,7 +21,7 @@ buildPythonPackage {
       mkdir -p $out/${py.sitePackages}
       mv lib/${py.libPrefix}/lib-dynload/_tkinter* $out/${py.sitePackages}/
     ''
-    + lib.optionalString (!stdenv.isDarwin) ''
+    + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       # Update the rpath to point to python without x11Support
       old_rpath=$(patchelf --print-rpath $out/${py.sitePackages}/_tkinter*)
       new_rpath=$(sed "s#${py}#${python}#g" <<< "$old_rpath" )
diff --git a/pkgs/development/python-modules/token-bucket/default.nix b/pkgs/development/python-modules/token-bucket/default.nix
index a2a9b7a04e7c..1af40f588f57 100644
--- a/pkgs/development/python-modules/token-bucket/default.nix
+++ b/pkgs/development/python-modules/token-bucket/default.nix
@@ -41,7 +41,7 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Token Bucket Implementation for Python Web Apps";
diff --git a/pkgs/development/python-modules/tokenizers/default.nix b/pkgs/development/python-modules/tokenizers/default.nix
index aca17db0e74e..36718c65513c 100644
--- a/pkgs/development/python-modules/tokenizers/default.nix
+++ b/pkgs/development/python-modules/tokenizers/default.nix
@@ -94,7 +94,7 @@ buildPythonPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       Security
     ];
diff --git a/pkgs/development/python-modules/tololib/default.nix b/pkgs/development/python-modules/tololib/default.nix
index 03bb2f2ea81e..9548f2d77657 100644
--- a/pkgs/development/python-modules/tololib/default.nix
+++ b/pkgs/development/python-modules/tololib/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "tololib" ];
 
   # Network discovery doesn't work in the sandbox for darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Python Library for Controlling TOLO Sauna/Steam Bath Devices";
diff --git a/pkgs/development/python-modules/torch/bin.nix b/pkgs/development/python-modules/torch/bin.nix
index a31fb394cfdf..bcd5008984fa 100644
--- a/pkgs/development/python-modules/torch/bin.nix
+++ b/pkgs/development/python-modules/torch/bin.nix
@@ -49,13 +49,13 @@ buildPythonPackage {
 
   src = fetchurl srcs."${stdenv.system}-${pyVerNoDot}" or unsupported;
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     addDriverRunpath
     autoAddDriverRunpath
     autoPatchelfHook
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux (
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux (
     with cudaPackages;
     [
       # $out/${sitePackages}/nvfuser/_C*.so wants libnvToolsExt.so.1 but torch/lib only ships
@@ -75,7 +75,7 @@ buildPythonPackage {
     ]
   );
 
-  autoPatchelfIgnoreMissingDeps = lib.optionals stdenv.isLinux [
+  autoPatchelfIgnoreMissingDeps = lib.optionals stdenv.hostPlatform.isLinux [
     # This is the hardware-dependent userspace driver that comes from
     # nvidia_x11 package. It must be deployed at runtime in
     # /run/opengl-driver/lib or pointed at by LD_LIBRARY_PATH variable, rather
@@ -94,14 +94,14 @@ buildPythonPackage {
     setuptools
     sympy
     typing-extensions
-  ] ++ lib.optionals (stdenv.isLinux && stdenv.isx86_64) [ triton ];
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64) [ triton ];
 
   postInstall = ''
     # ONNX conversion
     rm -rf $out/bin
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     addAutoPatchelfSearchPath "$out/${python.sitePackages}/torch/lib"
   '';
 
@@ -112,7 +112,7 @@ buildPythonPackage {
   extraRunpaths = lib.optionals stdenv.hostPlatform.isLinux [
     "${lib.getLib cudaPackages.cuda_nvrtc}/lib"
   ];
-  postPhases = lib.optionals stdenv.isLinux [ "postPatchelfPhase" ];
+  postPhases = lib.optionals stdenv.hostPlatform.isLinux [ "postPatchelfPhase" ];
   postPatchelfPhase = ''
     while IFS= read -r -d $'\0' elf ; do
       for extra in $extraRunpaths ; do
diff --git a/pkgs/development/python-modules/torch/default.nix b/pkgs/development/python-modules/torch/default.nix
index 32b4525b60e8..6dd263806f0d 100644
--- a/pkgs/development/python-modules/torch/default.nix
+++ b/pkgs/development/python-modules/torch/default.nix
@@ -53,7 +53,7 @@
   click,
   typing-extensions,
   # ROCm build and `torch.compile` requires `triton`
-  tritonSupport ? (!stdenv.isDarwin),
+  tritonSupport ? (!stdenv.hostPlatform.isDarwin),
   triton,
 
   # Unit tests
@@ -62,7 +62,7 @@
 
   # Disable MKLDNN on aarch64-darwin, it negatively impacts performance,
   # this is also what official pytorch build does
-  mklDnnSupport ? !(stdenv.isDarwin && stdenv.isAarch64),
+  mklDnnSupport ? !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64),
 
   # virtual pkg that consistently instantiates blas across nixpkgs
   # See https://github.com/NixOS/nixpkgs/pull/83888
@@ -193,7 +193,7 @@ let
 
   brokenConditions = attrsets.filterAttrs (_: cond: cond) {
     "CUDA and ROCm are mutually exclusive" = cudaSupport && rocmSupport;
-    "CUDA is not targeting Linux" = cudaSupport && !stdenv.isLinux;
+    "CUDA is not targeting Linux" = cudaSupport && !stdenv.hostPlatform.isLinux;
     "Unsupported CUDA version" =
       cudaSupport
       && !(builtins.elem cudaPackages.cudaMajorVersion [
@@ -242,7 +242,7 @@ buildPythonPackage rec {
       ./passthrough-python-lib-rel-path.patch
     ]
     ++ lib.optionals cudaSupport [ ./fix-cmake-cuda-toolkit.patch ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
       # pthreadpool added support for Grand Central Dispatch in April
       # 2020. However, this relies on functionality (DISPATCH_APPLY_AUTO)
       # that is available starting with macOS 10.13. However, our current
@@ -250,7 +250,7 @@ buildPythonPackage rec {
       # pthread support.
       ./pthreadpool-disable-gcd.diff
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       # Propagate CUPTI to Kineto by overriding the search path with environment variables.
       # https://github.com/pytorch/pytorch/pull/108847
       ./pytorch-pr-108847.patch
@@ -296,7 +296,7 @@ buildPythonPackage rec {
     # error: no member named 'aligned_alloc' in the global namespace; did you mean simply 'aligned_alloc'
     # This lib overrided aligned_alloc hence the error message. Tltr: his function is linkable but not in header.
     +
-      lib.optionalString (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "11.0")
+      lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "11.0")
         ''
           substituteInPlace third_party/pocketfft/pocketfft_hdronly.h --replace-fail '#if (__cplusplus >= 201703L) && (!defined(__MINGW32__)) && (!defined(_MSC_VER))
           inline void *aligned_alloc(size_t align, size_t size)' '#if 0
@@ -492,8 +492,8 @@ buildPythonPackage rec {
     )
     ++ lib.optionals rocmSupport [ rocmPackages.llvm.openmp ]
     ++ lib.optionals (cudaSupport || rocmSupport) [ effectiveMagma ]
-    ++ lib.optionals stdenv.isLinux [ numactl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ numactl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       Accelerate
       CoreServices
       libobjc
@@ -600,7 +600,7 @@ buildPythonPackage rec {
       mkdir -p "$cxxdev/nix-support"
       printWords "''${propagatedCxxBuildInputs[@]}" >> "$cxxdev/nix-support/propagated-build-inputs"
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       for f in $(ls $lib/lib/*.dylib); do
           install_name_tool -id $lib/lib/$(basename $f) $f || true
       done
@@ -620,7 +620,7 @@ buildPythonPackage rec {
   # This is a quick hack to add `libnvrtc` to the runpath so that torch can find
   # it when it is needed at runtime.
   extraRunpaths = lib.optionals cudaSupport [ "${lib.getLib cudaPackages.cuda_nvrtc}/lib" ];
-  postPhases = lib.optionals stdenv.isLinux [ "postPatchelfPhase" ];
+  postPhases = lib.optionals stdenv.hostPlatform.isLinux [ "postPatchelfPhase" ];
   postPatchelfPhase = ''
     while IFS= read -r -d $'\0' elf ; do
       for extra in $extraRunpaths ; do
diff --git a/pkgs/development/python-modules/torchaudio/bin.nix b/pkgs/development/python-modules/torchaudio/bin.nix
index 60b84d339ce2..d9aa2b6de388 100644
--- a/pkgs/development/python-modules/torchaudio/bin.nix
+++ b/pkgs/development/python-modules/torchaudio/bin.nix
@@ -41,7 +41,7 @@ buildPythonPackage rec {
       ffmpeg_6.dev
       sox
     ]
-    ++ lib.optionals stdenv.isLinux (
+    ++ lib.optionals stdenv.hostPlatform.isLinux (
       with cudaPackages;
       [
         # $out/${sitePackages}/torchaudio/lib/libtorchaudio*.so wants libcudart.so.11.0 but torch/lib only ships
@@ -54,14 +54,14 @@ buildPythonPackage rec {
       ]
     );
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     autoPatchelfHook
     addDriverRunpath
   ];
 
   dependencies = [ torch-bin ];
 
-  preInstall = lib.optionals stdenv.isLinux ''
+  preInstall = lib.optionals stdenv.hostPlatform.isLinux ''
     addAutoPatchelfSearchPath "${torch-bin}/${python.sitePackages}/torch"
   '';
 
diff --git a/pkgs/development/python-modules/torchio/default.nix b/pkgs/development/python-modules/torchio/default.nix
index c0aae74f178f..3fbfe404febc 100644
--- a/pkgs/development/python-modules/torchio/default.nix
+++ b/pkgs/development/python-modules/torchio/default.nix
@@ -54,7 +54,7 @@ buildPythonPackage rec {
       # tries to download models:
       "test_load_all"
     ]
-    ++ lib.optionals stdenv.isAarch64 [
+    ++ lib.optionals stdenv.hostPlatform.isAarch64 [
       # RuntimeError: DataLoader worker (pid(s) <...>) exited unexpectedly
       "test_queue_multiprocessing"
     ];
diff --git a/pkgs/development/python-modules/torchsnapshot/default.nix b/pkgs/development/python-modules/torchsnapshot/default.nix
index dc1e66156a7e..c28ce3f55e71 100644
--- a/pkgs/development/python-modules/torchsnapshot/default.nix
+++ b/pkgs/development/python-modules/torchsnapshot/default.nix
@@ -66,6 +66,6 @@ buildPythonPackage rec {
       # https://github.com/pytorch/torchsnapshot/issues/175
       pythonAtLeast "3.12"
       # ModuleNotFoundError: No module named 'torch._C._distributed_c10d'; 'torch._C' is not a package
-      || stdenv.isDarwin;
+      || stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/torchvision/bin.nix b/pkgs/development/python-modules/torchvision/bin.nix
index 69a573b777d1..ea03954c14d7 100644
--- a/pkgs/development/python-modules/torchvision/bin.nix
+++ b/pkgs/development/python-modules/torchvision/bin.nix
@@ -39,13 +39,13 @@ buildPythonPackage {
   # Note that we don't rely on config.cudaSupport here, because the Linux wheels all come built with CUDA support.
   buildInputs =
     with cudaPackages;
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       # $out/${sitePackages}/torchvision/_C.so wants libcudart.so.11.0 but torchvision.libs only ships
       # libcudart.$hash.so.11.0
       cuda_cudart
     ];
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     addDriverRunpath
     autoPatchelfHook
   ];
@@ -60,7 +60,7 @@ buildPythonPackage {
 
   pythonImportsCheck = [ "torchvision" ];
 
-  preInstall = lib.optionalString stdenv.isLinux ''
+  preInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     addAutoPatchelfSearchPath "${torch-bin}/${python.sitePackages}/torch"
   '';
 
diff --git a/pkgs/development/python-modules/trackpy/default.nix b/pkgs/development/python-modules/trackpy/default.nix
index a12ffea156bd..91945de8dc89 100644
--- a/pkgs/development/python-modules/trackpy/default.nix
+++ b/pkgs/development/python-modules/trackpy/default.nix
@@ -40,7 +40,7 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # specifically needed for darwin
     export HOME=$(mktemp -d)
     mkdir -p $HOME/.matplotlib
@@ -55,6 +55,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/soft-matter/trackpy/releases/tag/v${version}";
     license = licenses.bsd3;
     maintainers = [ ];
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   };
 }
diff --git a/pkgs/development/python-modules/transitions/default.nix b/pkgs/development/python-modules/transitions/default.nix
index 74ce55dd4b13..545e5667da8c 100644
--- a/pkgs/development/python-modules/transitions/default.nix
+++ b/pkgs/development/python-modules/transitions/default.nix
@@ -47,7 +47,7 @@ buildPythonPackage rec {
       "test_diagram"
       "test_ordered_with_graph"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Upstream issue https://github.com/pygraphviz/pygraphviz/issues/441
       "test_binary_stream"
     ];
diff --git a/pkgs/development/python-modules/trezor/default.nix b/pkgs/development/python-modules/trezor/default.nix
index 302c5d975676..62c94ce4bd7c 100644
--- a/pkgs/development/python-modules/trezor/default.nix
+++ b/pkgs/development/python-modules/trezor/default.nix
@@ -37,7 +37,7 @@ buildPythonPackage rec {
     mnemonic
     requests
     typing-extensions
-  ] ++ lib.optionals stdenv.isLinux [ trezor-udev-rules ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ trezor-udev-rules ];
 
   nativeCheckInputs = [ pytestCheckHook ];
 
diff --git a/pkgs/development/python-modules/trio-websocket/default.nix b/pkgs/development/python-modules/trio-websocket/default.nix
index 39a9ee4baa4f..2804bcaa76e5 100644
--- a/pkgs/development/python-modules/trio-websocket/default.nix
+++ b/pkgs/development/python-modules/trio-websocket/default.nix
@@ -49,7 +49,7 @@ buildPythonPackage rec {
       "test_client_connect_networking_error"
       "test_finalization_dropped_exception"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Failed: DID NOT RAISE <class 'ValueError'>
       "test_finalization_dropped_exception"
       # Timing related
diff --git a/pkgs/development/python-modules/trio/default.nix b/pkgs/development/python-modules/trio/default.nix
index b4e37ee448f6..968d67b27adb 100644
--- a/pkgs/development/python-modules/trio/default.nix
+++ b/pkgs/development/python-modules/trio/default.nix
@@ -59,7 +59,7 @@ buildPythonPackage rec {
   ] ++ lib.optionals (pythonOlder "3.11") [ exceptiongroup ];
 
   # tests are failing on Darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   nativeCheckInputs = [
     astor
diff --git a/pkgs/development/python-modules/trytond/default.nix b/pkgs/development/python-modules/trytond/default.nix
index 8a2bdcfd5d8a..b12ef6e9061e 100644
--- a/pkgs/development/python-modules/trytond/default.nix
+++ b/pkgs/development/python-modules/trytond/default.nix
@@ -90,7 +90,7 @@ buildPythonPackage rec {
     homepage = "http://www.tryton.org/";
     changelog = "https://foss.heptapod.net/tryton/tryton/-/blob/trytond-${version}/trytond/CHANGELOG?ref_type=tags";
     license = licenses.gpl3Plus;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [
       udono
       johbo
diff --git a/pkgs/development/python-modules/twisted/default.nix b/pkgs/development/python-modules/twisted/default.nix
index ffeee44aa8c7..8e401844adfc 100644
--- a/pkgs/development/python-modules/twisted/default.nix
+++ b/pkgs/development/python-modules/twisted/default.nix
@@ -138,7 +138,7 @@ buildPythonPackage rec {
       substituteInPlace src/twisted/test/test_failure.py \
         --replace "from cython_test_exception_raiser import raiser  # type: ignore[import]" "raiser = None"
     ''
-    + lib.optionalString stdenv.isLinux ''
+    + lib.optionalString stdenv.hostPlatform.isLinux ''
       echo 'PTYProcessTestsBuilder_EPollReactorTests.test_openFileDescriptors.skip = "invalid syntax"'>> src/twisted/internet/test/test_process.py
       echo 'PTYProcessTestsBuilder_PollReactorTests.test_openFileDescriptors.skip = "invalid syntax"'>> src/twisted/internet/test/test_process.py
       echo 'UNIXTestsBuilder_EPollReactorTests.test_sendFileDescriptorTriggersPauseProducing.skip = "sendFileDescriptor producer was not paused"'>> src/twisted/internet/test/test_unix.py
@@ -149,7 +149,7 @@ buildPythonPackage rec {
       substituteInPlace src/twisted/python/_inotify.py --replace \
         "ctypes.util.find_library(\"c\")" "'${stdenv.cc.libc}/lib/libc.so.6'"
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       echo 'ProcessTestsBuilder_AsyncioSelectorReactorTests.test_openFileDescriptors.skip = "invalid syntax"'>> src/twisted/internet/test/test_process.py
       echo 'ProcessTestsBuilder_SelectReactorTests.test_openFileDescriptors.skip = "invalid syntax"'>> src/twisted/internet/test/test_process.py
       echo 'ProcessTestsBuilder_AsyncioSelectorReactorTests.test_processEnded.skip = "exit code 120"' >> src/twisted/internet/test/test_process.py
@@ -175,7 +175,7 @@ buildPythonPackage rec {
     ++ passthru.optional-dependencies.http2
     ++ passthru.optional-dependencies.serial
     # not supported on aarch64-darwin: https://github.com/pyca/pyopenssl/issues/873
-    ++ lib.optionals (!(stdenv.isDarwin && stdenv.isAarch64)) passthru.optional-dependencies.tls;
+    ++ lib.optionals (!(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)) passthru.optional-dependencies.tls;
 
   checkPhase = ''
     export SOURCE_DATE_EPOCH=315532800
diff --git a/pkgs/development/python-modules/txtorcon/default.nix b/pkgs/development/python-modules/txtorcon/default.nix
index 6c6f7c86b3a0..eac293ac1e16 100644
--- a/pkgs/development/python-modules/txtorcon/default.nix
+++ b/pkgs/development/python-modules/txtorcon/default.nix
@@ -52,7 +52,7 @@ buildPythonPackage rec {
     geoip
   ];
 
-  doCheck = !(stdenv.isDarwin && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64);
 
   meta = with lib; {
     description = "Twisted-based Tor controller client, with state-tracking and configuration abstractions";
diff --git a/pkgs/development/python-modules/typer/default.nix b/pkgs/development/python-modules/typer/default.nix
index 9839f6d6c55d..74bb969473a7 100644
--- a/pkgs/development/python-modules/typer/default.nix
+++ b/pkgs/development/python-modules/typer/default.nix
@@ -60,7 +60,7 @@ buildPythonPackage rec {
     # fails also on Linux
     "test_show_completion"
     "test_install_completion"
-  ] ++ lib.optionals (stdenv.isLinux && stdenv.isAarch64) [ "test_install_completion" ];
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [ "test_install_completion" ];
 
   pythonImportsCheck = [ "typer" ];
 
diff --git a/pkgs/development/python-modules/tzlocal/default.nix b/pkgs/development/python-modules/tzlocal/default.nix
index 81f1ed1d2b80..a4e6ba12061c 100644
--- a/pkgs/development/python-modules/tzlocal/default.nix
+++ b/pkgs/development/python-modules/tzlocal/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
     "test_conflicting"
     "test_noconflict"
     "test_symlink_localtime"
-  ] ++ lib.optional stdenv.isDarwin "test_assert_tz_offset";
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "test_assert_tz_offset";
 
   pythonImportsCheck = [ "tzlocal" ];
 
diff --git a/pkgs/development/python-modules/uamqp/default.nix b/pkgs/development/python-modules/uamqp/default.nix
index 0bde984b93e5..89063357a565 100644
--- a/pkgs/development/python-modules/uamqp/default.nix
+++ b/pkgs/development/python-modules/uamqp/default.nix
@@ -28,7 +28,7 @@ buildPythonPackage rec {
   };
 
   patches =
-    lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
       ./darwin-azure-c-shared-utility-corefoundation.patch
     ]
     ++ [
@@ -53,7 +53,7 @@ buildPythonPackage rec {
       ./clang-fix-incompatible-function-pointer-conversion.patch
     ];
 
-  postPatch = lib.optionalString (stdenv.isDarwin && !stdenv.isx86_64) ''
+  postPatch = lib.optionalString (stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isx86_64) ''
     # force darwin aarch64 to use openssl instead of applessl, removing
     # some quirks upstream thinks they need to use openssl on macos
     sed -i \
@@ -76,7 +76,7 @@ buildPythonPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreFoundation
       CFNetwork
       Security
diff --git a/pkgs/development/python-modules/ubelt/default.nix b/pkgs/development/python-modules/ubelt/default.nix
index 85764d05986c..ae9c6b2a648d 100644
--- a/pkgs/development/python-modules/ubelt/default.nix
+++ b/pkgs/development/python-modules/ubelt/default.nix
@@ -51,7 +51,7 @@ buildPythonPackage rec {
     export HOME=$TMPDIR
   '';
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # fail due to sandbox environment
     "CacheStamp.expired"
     "userhome"
diff --git a/pkgs/development/python-modules/uharfbuzz/default.nix b/pkgs/development/python-modules/uharfbuzz/default.nix
index 0dc8fea9bc8a..de30a7809166 100644
--- a/pkgs/development/python-modules/uharfbuzz/default.nix
+++ b/pkgs/development/python-modules/uharfbuzz/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
     setuptools-scm
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ ApplicationServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ ApplicationServices ];
 
   nativeCheckInputs = [ pytestCheckHook ];
 
diff --git a/pkgs/development/python-modules/unicorn/default.nix b/pkgs/development/python-modules/unicorn/default.nix
index de3a0f6a3040..0814b63ef41b 100644
--- a/pkgs/development/python-modules/unicorn/default.nix
+++ b/pkgs/development/python-modules/unicorn/default.nix
@@ -26,13 +26,13 @@ buildPythonPackage rec {
 
   # needed on non-x86 linux
   setupPyBuildFlags =
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       "--plat-name"
       "linux"
     ]
     # aarch64 only available from MacOS SDK 11 onwards, so fix the version tag.
     # otherwise, bdist_wheel may detect "macosx_10_6_arm64" which doesn't make sense.
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
       "--plat-name"
       "macosx_11_0"
     ];
diff --git a/pkgs/development/python-modules/unrardll/default.nix b/pkgs/development/python-modules/unrardll/default.nix
index 14a32c0ba862..b539d805f66e 100644
--- a/pkgs/development/python-modules/unrardll/default.nix
+++ b/pkgs/development/python-modules/unrardll/default.nix
@@ -18,9 +18,9 @@ buildPythonPackage rec {
 
   buildInputs = [ unrar ];
 
-  NIX_CFLAGS_LINK = lib.optionalString stdenv.isDarwin "-headerpad_max_install_names";
+  NIX_CFLAGS_LINK = lib.optionalString stdenv.hostPlatform.isDarwin "-headerpad_max_install_names";
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change libunrar.so ${unrar}/lib/libunrar.so $out/lib/python*/site-packages/unrardll/unrar.*-darwin.so
     install_name_tool -change libunrar.so ${unrar}/lib/libunrar.so build/lib.*/unrardll/unrar.*-darwin.so
   '';
diff --git a/pkgs/development/python-modules/uvicorn/tests.nix b/pkgs/development/python-modules/uvicorn/tests.nix
index 24dd8d2b848c..b5d7cee2f7c5 100644
--- a/pkgs/development/python-modules/uvicorn/tests.nix
+++ b/pkgs/development/python-modules/uvicorn/tests.nix
@@ -34,7 +34,7 @@ buildPythonPackage {
     wsproto
   ] ++ uvicorn.optional-dependencies.standard;
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/development/python-modules/uvloop/default.nix b/pkgs/development/python-modules/uvloop/default.nix
index 06447432f218..f5d0e08cbb28 100644
--- a/pkgs/development/python-modules/uvloop/default.nix
+++ b/pkgs/development/python-modules/uvloop/default.nix
@@ -41,7 +41,7 @@ buildPythonPackage rec {
 
   buildInputs =
     [ libuv ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreServices
       ApplicationServices
     ];
@@ -61,7 +61,7 @@ buildPythonPackage rec {
       "--deselect=tests/test_process.py::Test_UV_Process::test_process_streams_redirect"
       "--deselect=tests/test_process.py::Test_AIO_Process::test_process_streams_redirect"
     ]
-    ++ lib.optionals (stdenv.isDarwin) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
       # Segmentation fault
       "--deselect=tests/test_fs_event.py::Test_UV_FS_EVENT_RENAME::test_fs_event_rename"
       # Broken: https://github.com/NixOS/nixpkgs/issues/160904
@@ -78,7 +78,7 @@ buildPythonPackage rec {
       # force using installed/compiled uvloop
       rm -rf uvloop
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # Work around "OSError: AF_UNIX path too long"
       # https://github.com/MagicStack/uvloop/issues/463
       export TMPDIR="/tmp"
diff --git a/pkgs/development/python-modules/vector/default.nix b/pkgs/development/python-modules/vector/default.nix
index ae7782699ef9..cf1ed3878e36 100644
--- a/pkgs/development/python-modules/vector/default.nix
+++ b/pkgs/development/python-modules/vector/default.nix
@@ -68,7 +68,7 @@ buildPythonPackage rec {
       "test_rhophi_eta_tau"
       "test_xy_eta_tau"
     ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
       # AssertionError: assert 2.1073424255447017e-08 == 0.0
       "test_issue_463"
     ];
diff --git a/pkgs/development/python-modules/virtkey/default.nix b/pkgs/development/python-modules/virtkey/default.nix
index 4815ce63413f..553721e83eea 100644
--- a/pkgs/development/python-modules/virtkey/default.nix
+++ b/pkgs/development/python-modules/virtkey/default.nix
@@ -38,7 +38,7 @@ buildPythonPackage rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Extension to emulate keypresses and to get the layout information from the X server";
     homepage = "https://launchpad.net/virtkey";
     license = licenses.gpl3;
diff --git a/pkgs/development/python-modules/vowpalwabbit/default.nix b/pkgs/development/python-modules/vowpalwabbit/default.nix
index 7f4feb2ba9ad..558d47529b68 100644
--- a/pkgs/development/python-modules/vowpalwabbit/default.nix
+++ b/pkgs/development/python-modules/vowpalwabbit/default.nix
@@ -55,7 +55,7 @@ buildPythonPackage rec {
   dontUseCmakeConfigure = true;
 
   # Python ctypes.find_library uses DYLD_LIBRARY_PATH.
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export DYLD_LIBRARY_PATH="${python.pkgs.boost}/lib"
   '';
 
@@ -71,6 +71,6 @@ buildPythonPackage rec {
     license = licenses.bsd3;
     maintainers = with maintainers; [ teh ];
     # Test again when new version is released
-    broken = stdenv.isLinux;
+    broken = stdenv.hostPlatform.isLinux;
   };
 }
diff --git a/pkgs/development/python-modules/wandb/default.nix b/pkgs/development/python-modules/wandb/default.nix
index fbd5d9baabf5..c0c42e58408d 100644
--- a/pkgs/development/python-modules/wandb/default.nix
+++ b/pkgs/development/python-modules/wandb/default.nix
@@ -282,11 +282,11 @@ buildPythonPackage rec {
       # See https://github.com/wandb/wandb/issues/6836
       "tests/pytest_tests/unit_tests_old/test_logging.py"
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       # Same as above
       "tests/pytest_tests/unit_tests/test_artifacts/test_storage.py"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Same as above
       "tests/pytest_tests/unit_tests/test_lib/test_filesystem.py"
     ];
@@ -303,7 +303,7 @@ buildPythonPackage rec {
       "test_pytorch_saved_model"
       "test_tensorflow_keras_saved_model"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Disable test that fails on darwin due to issue with python3Packages.psutil:
       # https://github.com/giampaolo/psutil/issues/1219
       "test_tpu_system_stats"
diff --git a/pkgs/development/python-modules/wasmer/default.nix b/pkgs/development/python-modules/wasmer/default.nix
index 8408780ef637..c903ede48d27 100644
--- a/pkgs/development/python-modules/wasmer/default.nix
+++ b/pkgs/development/python-modules/wasmer/default.nix
@@ -56,7 +56,7 @@ let
           --replace "package.metadata.maturin" "broken"
       '';
 
-      buildInputs = lib.optionals stdenv.isDarwin [ libiconv ] ++ extraBuildInputs;
+      buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ] ++ extraBuildInputs;
 
       inherit buildAndTestSubdir;
 
diff --git a/pkgs/development/python-modules/watchdog/default.nix b/pkgs/development/python-modules/watchdog/default.nix
index 4e83fb026425..2a1633de0512 100644
--- a/pkgs/development/python-modules/watchdog/default.nix
+++ b/pkgs/development/python-modules/watchdog/default.nix
@@ -26,9 +26,9 @@ buildPythonPackage rec {
 
   # force kqueue on x86_64-darwin, because our api version does
   # not support fsevents
-  patches = lib.optionals (stdenv.isDarwin && !stdenv.isAarch64) [ ./force-kqueue.patch ];
+  patches = lib.optionals (stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isAarch64) [ ./force-kqueue.patch ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   passthru.optional-dependencies.watchmedo = [ pyyaml ];
 
@@ -50,13 +50,13 @@ buildPythonPackage rec {
       "--deselect=tests/test_emitter.py::test_create_wrong_encoding"
       "--deselect=tests/test_emitter.py::test_close"
     ]
-    ++ lib.optionals (stdenv.isDarwin) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
       # fails to stop process in teardown
       "--deselect=tests/test_0_watchmedo.py::test_auto_restart_subprocess_termination"
       # assert cap.out.splitlines(keepends=False).count('+++++ 0') == 2 != 3
       "--deselect=tests/test_0_watchmedo.py::test_auto_restart_on_file_change_debounce"
     ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
       # FileCreationEvent != FileDeletionEvent
       "--deselect=tests/test_emitter.py::test_separate_consecutive_moves"
       "--deselect=tests/test_observers_polling.py::test___init__"
@@ -66,7 +66,7 @@ buildPythonPackage rec {
       # AttributeError: '_thread.RLock' object has no attribute 'key'"
       "--deselect=tests/test_skip_repeats_queue.py::test_eventlet_monkey_patching"
     ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
       # segfaults
       "--deselect=tests/test_delayed_queue.py::test_delayed_get"
       "--deselect=tests/test_0_watchmedo.py::test_tricks_from_file"
@@ -89,7 +89,7 @@ buildPythonPackage rec {
       # tests timeout easily
       "tests/test_inotify_buffer.py"
     ]
-    ++ lib.optionals (stdenv.isDarwin) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
       # segfaults the testsuite
       "tests/test_emitter.py"
       # unsupported on x86_64-darwin
diff --git a/pkgs/development/python-modules/watchfiles/default.nix b/pkgs/development/python-modules/watchfiles/default.nix
index 22cd171afae5..3b09081249b0 100644
--- a/pkgs/development/python-modules/watchfiles/default.nix
+++ b/pkgs/development/python-modules/watchfiles/default.nix
@@ -36,7 +36,7 @@ buildPythonPackage rec {
     hash = "sha256-n9yN/VRNQWCxh+BoliIMkKqJC51inpB9DQ9WtqR4oA0=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     libiconv
   ];
diff --git a/pkgs/development/python-modules/webdataset/default.nix b/pkgs/development/python-modules/webdataset/default.nix
index 3c5b74eed4ae..da172aa79ff7 100644
--- a/pkgs/development/python-modules/webdataset/default.nix
+++ b/pkgs/development/python-modules/webdataset/default.nix
@@ -67,16 +67,16 @@ buildPythonPackage rec {
       "test_unbatched"
       "test_yaml3"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # pickling error
       "test_background_download"
     ]
-    ++ lib.optionals (stdenv.isx86_64 && stdenv.isDarwin) [
+    ++ lib.optionals (stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.isDarwin) [
       "test_concurrent_access"
       # fails to patch 'init_process_group' from torch.distributed
       "TestDistributedChunkedSampler"
     ]
-    ++ lib.optionals (stdenv.isAarch64 && stdenv.isLinux) [
+    ++ lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) [
       # segfaults on aarch64-linux
       "test_webloader"
       "test_webloader2"
@@ -84,7 +84,7 @@ buildPythonPackage rec {
       "test_webloader_unbatched"
     ];
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     # AttributeError: <module 'torch.distributed' from /nix/store/...
     "tests/test_wids.py"
 
diff --git a/pkgs/development/python-modules/webrtc-noise-gain/default.nix b/pkgs/development/python-modules/webrtc-noise-gain/default.nix
index 68cc5938bc88..3df09891253d 100644
--- a/pkgs/development/python-modules/webrtc-noise-gain/default.nix
+++ b/pkgs/development/python-modules/webrtc-noise-gain/default.nix
@@ -35,7 +35,7 @@ buildPythonPackage rec {
 
   buildInputs = [
     abseil-cpp
-  ] ++ lib.optionals (stdenv.isDarwin) [ darwin.apple_sdk.frameworks.CoreServices ];
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ darwin.apple_sdk.frameworks.CoreServices ];
 
   pythonImportsCheck = [ "webrtc_noise_gain" ];
 
diff --git a/pkgs/development/python-modules/websockets/default.nix b/pkgs/development/python-modules/websockets/default.nix
index f2c7ce30d799..907024735afb 100644
--- a/pkgs/development/python-modules/websockets/default.nix
+++ b/pkgs/development/python-modules/websockets/default.nix
@@ -48,7 +48,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [ unittestCheckHook ];
 
   # Tests fail on Darwin with `OSError: AF_UNIX path too long`
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   pythonImportsCheck = [ "websockets" ];
 
diff --git a/pkgs/development/python-modules/websockify/default.nix b/pkgs/development/python-modules/websockify/default.nix
index 2dee5231dc72..2aaa1078200b 100644
--- a/pkgs/development/python-modules/websockify/default.nix
+++ b/pkgs/development/python-modules/websockify/default.nix
@@ -36,7 +36,7 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # this test failed on macos
     # https://github.com/novnc/websockify/issues/552
     "test_socket_set_keepalive_options"
diff --git a/pkgs/development/python-modules/webssh/default.nix b/pkgs/development/python-modules/webssh/default.nix
index b18dcd38c2a7..f7166b86e459 100644
--- a/pkgs/development/python-modules/webssh/default.nix
+++ b/pkgs/development/python-modules/webssh/default.nix
@@ -38,6 +38,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/huashengdun/webssh/releases/tag/v${version}";
     license = licenses.mit;
     maintainers = with maintainers; [ davidtwco ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/werkzeug/default.nix b/pkgs/development/python-modules/werkzeug/default.nix
index 43758f06157b..be6cd79b788a 100644
--- a/pkgs/development/python-modules/werkzeug/default.nix
+++ b/pkgs/development/python-modules/werkzeug/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [ markupsafe ];
 
   passthru.optional-dependencies = {
-    watchdog = lib.optionals (!stdenv.isDarwin) [
+    watchdog = lib.optionals (!stdenv.hostPlatform.isDarwin) [
       # watchdog requires macos-sdk 10.13
       watchdog
     ];
@@ -63,7 +63,7 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "werkzeug" ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [ "test_get_machine_id" ];
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [ "test_get_machine_id" ];
 
   disabledTestPaths = [
     # ConnectionRefusedError: [Errno 111] Connection refused
diff --git a/pkgs/development/python-modules/whenever/default.nix b/pkgs/development/python-modules/whenever/default.nix
index cdb547e65dac..9f6e763a149a 100644
--- a/pkgs/development/python-modules/whenever/default.nix
+++ b/pkgs/development/python-modules/whenever/default.nix
@@ -45,7 +45,7 @@ buildPythonPackage rec {
     rustc
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ];
 
diff --git a/pkgs/development/python-modules/wxpython/4.2.nix b/pkgs/development/python-modules/wxpython/4.2.nix
index 8ad524a17c9b..be3a181da9aa 100644
--- a/pkgs/development/python-modules/wxpython/4.2.nix
+++ b/pkgs/development/python-modules/wxpython/4.2.nix
@@ -75,14 +75,14 @@ buildPythonPackage rec {
     sip
     which
     wxGTK
-  ] ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   buildInputs =
     [
       wxGTK
       SDL
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       gst_all_1.gst-plugins-base
       gst_all_1.gstreamer
       libGL
diff --git a/pkgs/development/python-modules/xlib/default.nix b/pkgs/development/python-modules/xlib/default.nix
index a24b9fe21a6a..fb5685de6adf 100644
--- a/pkgs/development/python-modules/xlib/default.nix
+++ b/pkgs/development/python-modules/xlib/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ six ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   nativeCheckInputs = [
     pytestCheckHook
diff --git a/pkgs/development/python-modules/xnd/default.nix b/pkgs/development/python-modules/xnd/default.nix
index dcf396c079e5..8317f30e462b 100644
--- a/pkgs/development/python-modules/xnd/default.nix
+++ b/pkgs/development/python-modules/xnd/default.nix
@@ -34,7 +34,7 @@ buildPythonPackage {
       mkdir $out/include
       cp python/xnd/*.h $out/include
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       install_name_tool -add_rpath ${libxnd}/lib $out/${python.sitePackages}/xnd/_xnd.*.so
     '';
 
diff --git a/pkgs/development/python-modules/y-py/default.nix b/pkgs/development/python-modules/y-py/default.nix
index 7284ceca55a4..b01d8f5dcca3 100644
--- a/pkgs/development/python-modules/y-py/default.nix
+++ b/pkgs/development/python-modules/y-py/default.nix
@@ -34,7 +34,7 @@ buildPythonPackage rec {
     rustc
   ];
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   pythonImportsCheck = [ "y_py" ];
 
diff --git a/pkgs/development/python-modules/yamllint/default.nix b/pkgs/development/python-modules/yamllint/default.nix
index ff7560587aa4..b645cd8b56e6 100644
--- a/pkgs/development/python-modules/yamllint/default.nix
+++ b/pkgs/development/python-modules/yamllint/default.nix
@@ -38,7 +38,7 @@ buildPythonPackage rec {
       # test failure reported upstream: https://github.com/adrienverge/yamllint/issues/373
       "test_find_files_recursively"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # locale tests are broken on BSDs; see https://github.com/adrienverge/yamllint/issues/307
       "test_locale_accents"
       "test_locale_case"
diff --git a/pkgs/development/python-modules/zeroc-ice/default.nix b/pkgs/development/python-modules/zeroc-ice/default.nix
index 8a61451a6221..7d6cc236f8f4 100644
--- a/pkgs/development/python-modules/zeroc-ice/default.nix
+++ b/pkgs/development/python-modules/zeroc-ice/default.nix
@@ -29,7 +29,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "Ice" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://zeroc.com/";
     license = licenses.gpl2;
     description = "Comprehensive RPC framework with support for Python, C++, .NET, Java, JavaScript and more";
diff --git a/pkgs/development/python-modules/zigpy/default.nix b/pkgs/development/python-modules/zigpy/default.nix
index ed182e36c461..c430b0853991 100644
--- a/pkgs/development/python-modules/zigpy/default.nix
+++ b/pkgs/development/python-modules/zigpy/default.nix
@@ -75,7 +75,7 @@ buildPythonPackage rec {
   disabledTests = [
     # assert quirked.quirk_metadata.quirk_location.endswith("zigpy/tests/test_quirks_v2.py]-line:104") is False
     "test_quirks_v2"
-  ] ++ lib.optionals (stdenv.isLinux && stdenv.isx86_64) [ "test_periodic_scan_priority" ];
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64) [ "test_periodic_scan_priority" ];
 
   disabledTestPaths = [
     # Tests require network access
diff --git a/pkgs/development/python2-modules/cffi/default.nix b/pkgs/development/python2-modules/cffi/default.nix
index adeda6e90d22..aa6f49f95e3c 100644
--- a/pkgs/development/python2-modules/cffi/default.nix
+++ b/pkgs/development/python2-modules/cffi/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, cffi }:
 
 if cffi == null then null else cffi.overridePythonAttrs {
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # cannot load library 'c'
     "test_FILE"
     "test_FILE_object"
diff --git a/pkgs/development/python2-modules/configparser/default.nix b/pkgs/development/python2-modules/configparser/default.nix
index 5cb0e9cf8961..956c12f44c5d 100644
--- a/pkgs/development/python2-modules/configparser/default.nix
+++ b/pkgs/development/python2-modules/configparser/default.nix
@@ -15,7 +15,7 @@ buildPythonPackage rec {
   nativeBuildInputs = [ setuptools-scm ];
 
   preConfigure = ''
-    export LC_ALL=${if stdenv.isDarwin then "en_US" else "C"}.UTF-8
+    export LC_ALL=${if stdenv.hostPlatform.isDarwin then "en_US" else "C"}.UTF-8
   '';
 
   meta = with lib; {
diff --git a/pkgs/development/python2-modules/futures/default.nix b/pkgs/development/python2-modules/futures/default.nix
index d1cdb679d0d1..5cad6c13029d 100644
--- a/pkgs/development/python2-modules/futures/default.nix
+++ b/pkgs/development/python2-modules/futures/default.nix
@@ -16,7 +16,7 @@ buildPythonPackage rec {
     ${python.interpreter} test_futures.py
   '';
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Backport of the concurrent.futures package from Python 3.2";
diff --git a/pkgs/development/python2-modules/jinja2/default.nix b/pkgs/development/python2-modules/jinja2/default.nix
index 3b593338763f..1b6948a66aad 100644
--- a/pkgs/development/python2-modules/jinja2/default.nix
+++ b/pkgs/development/python2-modules/jinja2/default.nix
@@ -22,7 +22,7 @@ buildPythonPackage rec {
   # Multiple tests run out of stack space on 32bit systems with python2.
   # See https://github.com/pallets/jinja/issues/1158
   # warnings are no longer being filtered correctly for python2
-  doCheck = !stdenv.is32bit && isPy3k;
+  doCheck = !stdenv.hostPlatform.is32bit && isPy3k;
 
   checkPhase = ''
     pytest -v tests -W ignore::DeprecationWarning
diff --git a/pkgs/development/python2-modules/pygobject/default.nix b/pkgs/development/python2-modules/pygobject/default.nix
index 00c98fba39af..3202c6e6af76 100644
--- a/pkgs/development/python2-modules/pygobject/default.nix
+++ b/pkgs/development/python2-modules/pygobject/default.nix
@@ -13,7 +13,7 @@ buildPythonPackage rec {
 
   outputs = [ "out" "devdoc" ];
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     ./pygobject-2.0-fix-darwin.patch
     (fetchpatch {
       url = "https://github.com/macports/macports-ports/raw/f2975d5bbbc2459c661905c5a850cc661fa32f55/python/py-gobject/files/py-gobject-dynamic_lookup-11.patch";
diff --git a/pkgs/development/python2-modules/pygtk/default.nix b/pkgs/development/python2-modules/pygtk/default.nix
index 003474ee8582..68a7dba4c8e3 100644
--- a/pkgs/development/python2-modules/pygtk/default.nix
+++ b/pkgs/development/python2-modules/pygtk/default.nix
@@ -37,8 +37,8 @@ buildPythonPackage rec {
 
   buildPhase = "buildPhase";
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-ObjC"
-    + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) " -lpython2.7";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-ObjC"
+    + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) " -lpython2.7";
 
   installPhase = "installPhase";
 
diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 43aacdddb6e6..3ac1f52f2e76 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -339,7 +339,7 @@ let
     adimpro = [ pkgs.imagemagick ];
     animation = [ pkgs.which ];
     Apollonius = with pkgs; [ pkg-config gmp.dev mpfr.dev ];
-    arrow = with pkgs; [ pkg-config cmake ] ++ lib.optionals stdenv.isDarwin [ intltool ];
+    arrow = with pkgs; [ pkg-config cmake ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ intltool ];
     audio = [ pkgs.portaudio ];
     BayesSAE = [ pkgs.gsl ];
     BayesVarSel = [ pkgs.gsl ];
@@ -363,7 +363,7 @@ let
     clarabel = [ pkgs.cargo ];
     curl = [ pkgs.curl.dev ];
     CytoML = [ pkgs.libxml2.dev ];
-    data_table = with pkgs; [ pkg-config zlib.dev ] ++ lib.optional stdenv.isDarwin pkgs.llvmPackages.openmp;
+    data_table = with pkgs; [ pkg-config zlib.dev ] ++ lib.optional stdenv.hostPlatform.isDarwin pkgs.llvmPackages.openmp;
     devEMF = with pkgs; [ xorg.libXft.dev ];
     diversitree = with pkgs; [ gsl fftw ];
     exactextractr = [ pkgs.geos ];
@@ -423,7 +423,7 @@ let
     rvg = [ pkgs.libpng.dev ];
     MAGEE = [ pkgs.zlib.dev pkgs.bzip2.dev ];
     magick = [ pkgs.imagemagick.dev ];
-    ModelMetrics = lib.optional stdenv.isDarwin pkgs.llvmPackages.openmp;
+    ModelMetrics = lib.optional stdenv.hostPlatform.isDarwin pkgs.llvmPackages.openmp;
     mvabund = [ pkgs.gsl ];
     mwaved = [ pkgs.fftw.dev ];
     mzR = with pkgs; [ zlib netcdf ];
@@ -438,7 +438,7 @@ let
     pander = with pkgs; [ pandoc which ];
     pbdMPI = [ pkgs.mpi ];
     pbdPROF = [ pkgs.mpi ];
-    pbdZMQ = [ pkgs.pkg-config ] ++ lib.optionals stdenv.isDarwin [ pkgs.which ];
+    pbdZMQ = [ pkgs.pkg-config ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ pkgs.which ];
     pcaL1 = [ pkgs.pkg-config pkgs.clp ];
     pdftools = [ pkgs.poppler.dev ];
     PEPBVS = [ pkgs.gsl ];
@@ -533,7 +533,7 @@ let
     V8 = [ pkgs.nodejs.libv8 ];
     XBRL = with pkgs; [ zlib libxml2.dev ];
     XLConnect = [ pkgs.jdk ];
-    xml2 = [ pkgs.libxml2.dev ] ++ lib.optionals stdenv.isDarwin [ pkgs.perl ];
+    xml2 = [ pkgs.libxml2.dev ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ pkgs.perl ];
     XML = with pkgs; [ libtool libxml2.dev xmlsec libxslt ];
     affyPLM = [ pkgs.zlib.dev ];
     BitSeq = [ pkgs.zlib.dev ];
@@ -607,8 +607,8 @@ let
     unrtf = with pkgs; [ xz.dev bzip2.dev zlib.dev icu.dev libdeflate ];
     nat = [ pkgs.which ];
     nat_templatebrains = [ pkgs.which ];
-    pbdZMQ = [ pkgs.zeromq ] ++ lib.optionals stdenv.isDarwin [ pkgs.darwin.binutils ];
-    bigmemory = lib.optionals stdenv.isLinux [ pkgs.libuuid.dev ];
+    pbdZMQ = [ pkgs.zeromq ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ pkgs.darwin.binutils ];
+    bigmemory = lib.optionals stdenv.hostPlatform.isLinux [ pkgs.libuuid.dev ];
     bayesWatch = [ pkgs.boost.dev ];
     clustermq = [  pkgs.pkg-config ];
     coga = [ pkgs.gsl.dev ];
@@ -792,7 +792,7 @@ let
     DropletUtils = [ pkgs.zlib.dev ];
     RMariaDB = [ pkgs.libmysqlclient.dev ];
     ijtiff = [ pkgs.libtiff ];
-    ragg = with pkgs; [ freetype.dev libpng.dev libtiff.dev zlib.dev libjpeg.dev bzip2.dev ] ++ lib.optional stdenv.isDarwin lerc.dev;
+    ragg = with pkgs; [ freetype.dev libpng.dev libtiff.dev zlib.dev libjpeg.dev bzip2.dev ] ++ lib.optional stdenv.hostPlatform.isDarwin lerc.dev;
     qqconf = [ pkgs.fftw.dev ];
     spFW = [ pkgs.fftw.dev ];
     qspray = with pkgs; [ gmp.dev mpfr.dev ];
@@ -1220,7 +1220,7 @@ let
 
     ModelMetrics = old.ModelMetrics.overrideAttrs (attrs: {
       env = (attrs.env or { }) // {
-        NIX_CFLAGS_COMPILE = attrs.env.NIX_CFLAGS_COMPILE + lib.optionalString stdenv.isDarwin " -fopenmp";
+        NIX_CFLAGS_COMPILE = attrs.env.NIX_CFLAGS_COMPILE + lib.optionalString stdenv.hostPlatform.isDarwin " -fopenmp";
       };
     });
 
@@ -1275,7 +1275,7 @@ let
     });
 
     pbdZMQ = old.pbdZMQ.overrideAttrs (attrs: {
-      postPatch = lib.optionalString stdenv.isDarwin ''
+      postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
         for file in R/*.{r,r.in}; do
             sed -i 's#system("which \(\w\+\)"[^)]*)#"${pkgs.cctools}/bin/\1"#g' $file
         done
diff --git a/pkgs/development/r-modules/generic-builder.nix b/pkgs/development/r-modules/generic-builder.nix
index ecbd78c4057d..6e3f93f52321 100644
--- a/pkgs/development/r-modules/generic-builder.nix
+++ b/pkgs/development/r-modules/generic-builder.nix
@@ -5,10 +5,10 @@
 stdenv.mkDerivation ({
   buildInputs = buildInputs ++ [R gettext] ++
                 lib.optionals requireX [util-linux xvfb-run] ++
-                lib.optionals stdenv.isDarwin [Cocoa Foundation gfortran libiconv];
+                lib.optionals stdenv.hostPlatform.isDarwin [Cocoa Foundation gfortran libiconv];
 
   env.NIX_CFLAGS_COMPILE =
-    lib.optionalString stdenv.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
+    lib.optionalString stdenv.hostPlatform.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/rocm-modules/5/llvm/base.nix b/pkgs/development/rocm-modules/5/llvm/base.nix
index 914b7d827547..a8147d862e32 100644
--- a/pkgs/development/rocm-modules/5/llvm/base.nix
+++ b/pkgs/development/rocm-modules/5/llvm/base.nix
@@ -54,8 +54,8 @@ in
 
 let
   llvmNativeTarget =
-    if stdenv.isx86_64 then "X86"
-    else if stdenv.isAarch64 then "AArch64"
+    if stdenv.hostPlatform.isx86_64 then "X86"
+    else if stdenv.hostPlatform.isAarch64 then "AArch64"
     else throw "Unsupported ROCm LLVM platform";
   inferNativeTarget = t: if t == "NATIVE" then llvmNativeTarget else t;
   llvmTargetsToBuild' = [ "AMDGPU" ] ++ builtins.map inferNativeTarget llvmTargetsToBuild;
diff --git a/pkgs/development/rocm-modules/5/llvm/stage-1/llvm.nix b/pkgs/development/rocm-modules/5/llvm/stage-1/llvm.nix
index f601e96f0a35..ad4981aa435b 100644
--- a/pkgs/development/rocm-modules/5/llvm/stage-1/llvm.nix
+++ b/pkgs/development/rocm-modules/5/llvm/stage-1/llvm.nix
@@ -6,5 +6,5 @@
 callPackage ../base.nix {
   inherit stdenv rocmUpdateScript;
   requiredSystemFeatures = [ "big-parallel" ];
-  isBroken = stdenv.isAarch64; # https://github.com/ROCm/ROCm/issues/1831#issuecomment-1278205344
+  isBroken = stdenv.hostPlatform.isAarch64; # https://github.com/ROCm/ROCm/issues/1831#issuecomment-1278205344
 }
diff --git a/pkgs/development/rocm-modules/5/rocm-comgr/default.nix b/pkgs/development/rocm-modules/5/rocm-comgr/default.nix
index 1ef226b338c4..ab43edf8a4b9 100644
--- a/pkgs/development/rocm-modules/5/rocm-comgr/default.nix
+++ b/pkgs/development/rocm-modules/5/rocm-comgr/default.nix
@@ -10,8 +10,8 @@
 
 let
   llvmNativeTarget =
-    if stdenv.isx86_64 then "X86"
-    else if stdenv.isAarch64 then "AArch64"
+    if stdenv.hostPlatform.isx86_64 then "X86"
+    else if stdenv.hostPlatform.isAarch64 then "AArch64"
     else throw "Unsupported ROCm LLVM platform";
 in stdenv.mkDerivation (finalAttrs: {
   pname = "rocm-comgr";
diff --git a/pkgs/development/rocm-modules/5/rocm-device-libs/default.nix b/pkgs/development/rocm-modules/5/rocm-device-libs/default.nix
index 28af3e960266..3e769421548b 100644
--- a/pkgs/development/rocm-modules/5/rocm-device-libs/default.nix
+++ b/pkgs/development/rocm-modules/5/rocm-device-libs/default.nix
@@ -9,8 +9,8 @@
 
 let
   llvmNativeTarget =
-    if stdenv.isx86_64 then "X86"
-    else if stdenv.isAarch64 then "AArch64"
+    if stdenv.hostPlatform.isx86_64 then "X86"
+    else if stdenv.hostPlatform.isAarch64 then "AArch64"
     else throw "Unsupported ROCm LLVM platform";
 in stdenv.mkDerivation (finalAttrs: {
   pname = "rocm-device-libs";
diff --git a/pkgs/development/rocm-modules/5/rocminfo/default.nix b/pkgs/development/rocm-modules/5/rocminfo/default.nix
index addbad038b94..fbeb2f7d7f2c 100644
--- a/pkgs/development/rocm-modules/5/rocminfo/default.nix
+++ b/pkgs/development/rocm-modules/5/rocminfo/default.nix
@@ -58,6 +58,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.ncsa;
     maintainers = with maintainers; [ lovesegfault ] ++ teams.rocm.members;
     platforms = platforms.linux;
-    broken = stdenv.isAarch64 || versions.minor finalAttrs.version != versions.minor stdenv.cc.version || versionAtLeast finalAttrs.version "6.0.0";
+    broken = stdenv.hostPlatform.isAarch64 || versions.minor finalAttrs.version != versions.minor stdenv.cc.version || versionAtLeast finalAttrs.version "6.0.0";
   };
 })
diff --git a/pkgs/development/rocm-modules/5/rocmlir/default.nix b/pkgs/development/rocm-modules/5/rocmlir/default.nix
index 73dbbf8f95f8..33d0ddb55604 100644
--- a/pkgs/development/rocm-modules/5/rocmlir/default.nix
+++ b/pkgs/development/rocm-modules/5/rocmlir/default.nix
@@ -27,8 +27,8 @@ let
     else "";
 
   llvmNativeTarget =
-    if stdenv.isx86_64 then "X86"
-    else if stdenv.isAarch64 then "AArch64"
+    if stdenv.hostPlatform.isx86_64 then "X86"
+    else if stdenv.hostPlatform.isAarch64 then "AArch64"
     else throw "Unsupported ROCm LLVM platform";
 in stdenv.mkDerivation (finalAttrs: {
   pname = "rocmlir${suffix}";
diff --git a/pkgs/development/rocm-modules/6/llvm/base.nix b/pkgs/development/rocm-modules/6/llvm/base.nix
index 1bbf16447549..b7a919c792ba 100644
--- a/pkgs/development/rocm-modules/6/llvm/base.nix
+++ b/pkgs/development/rocm-modules/6/llvm/base.nix
@@ -54,8 +54,8 @@ in
 
 let
   llvmNativeTarget =
-    if stdenv.isx86_64 then "X86"
-    else if stdenv.isAarch64 then "AArch64"
+    if stdenv.hostPlatform.isx86_64 then "X86"
+    else if stdenv.hostPlatform.isAarch64 then "AArch64"
     else throw "Unsupported ROCm LLVM platform";
   inferNativeTarget = t: if t == "NATIVE" then llvmNativeTarget else t;
   llvmTargetsToBuild' = [ "AMDGPU" ] ++ builtins.map inferNativeTarget llvmTargetsToBuild;
diff --git a/pkgs/development/rocm-modules/6/llvm/stage-1/llvm.nix b/pkgs/development/rocm-modules/6/llvm/stage-1/llvm.nix
index f601e96f0a35..ad4981aa435b 100644
--- a/pkgs/development/rocm-modules/6/llvm/stage-1/llvm.nix
+++ b/pkgs/development/rocm-modules/6/llvm/stage-1/llvm.nix
@@ -6,5 +6,5 @@
 callPackage ../base.nix {
   inherit stdenv rocmUpdateScript;
   requiredSystemFeatures = [ "big-parallel" ];
-  isBroken = stdenv.isAarch64; # https://github.com/ROCm/ROCm/issues/1831#issuecomment-1278205344
+  isBroken = stdenv.hostPlatform.isAarch64; # https://github.com/ROCm/ROCm/issues/1831#issuecomment-1278205344
 }
diff --git a/pkgs/development/rocm-modules/6/rocm-comgr/default.nix b/pkgs/development/rocm-modules/6/rocm-comgr/default.nix
index c610b63abf68..033de08af11b 100644
--- a/pkgs/development/rocm-modules/6/rocm-comgr/default.nix
+++ b/pkgs/development/rocm-modules/6/rocm-comgr/default.nix
@@ -10,8 +10,8 @@
 
 let
   llvmNativeTarget =
-    if stdenv.isx86_64 then "X86"
-    else if stdenv.isAarch64 then "AArch64"
+    if stdenv.hostPlatform.isx86_64 then "X86"
+    else if stdenv.hostPlatform.isAarch64 then "AArch64"
     else throw "Unsupported ROCm LLVM platform";
 in stdenv.mkDerivation (finalAttrs: {
   pname = "rocm-comgr";
diff --git a/pkgs/development/rocm-modules/6/rocm-device-libs/default.nix b/pkgs/development/rocm-modules/6/rocm-device-libs/default.nix
index defcf2e60ecb..c55ba960fc61 100644
--- a/pkgs/development/rocm-modules/6/rocm-device-libs/default.nix
+++ b/pkgs/development/rocm-modules/6/rocm-device-libs/default.nix
@@ -9,8 +9,8 @@
 
 let
   llvmNativeTarget =
-    if stdenv.isx86_64 then "X86"
-    else if stdenv.isAarch64 then "AArch64"
+    if stdenv.hostPlatform.isx86_64 then "X86"
+    else if stdenv.hostPlatform.isAarch64 then "AArch64"
     else throw "Unsupported ROCm LLVM platform";
 in stdenv.mkDerivation (finalAttrs: {
   pname = "rocm-device-libs";
diff --git a/pkgs/development/rocm-modules/6/rocminfo/default.nix b/pkgs/development/rocm-modules/6/rocminfo/default.nix
index cb1df3f1fd43..f53dcf19b96b 100644
--- a/pkgs/development/rocm-modules/6/rocminfo/default.nix
+++ b/pkgs/development/rocm-modules/6/rocminfo/default.nix
@@ -58,6 +58,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.ncsa;
     maintainers = with maintainers; [ lovesegfault ] ++ teams.rocm.members;
     platforms = platforms.linux;
-    broken = stdenv.isAarch64 || versions.minor finalAttrs.version != versions.minor stdenv.cc.version || versionAtLeast finalAttrs.version "7.0.0";
+    broken = stdenv.hostPlatform.isAarch64 || versions.minor finalAttrs.version != versions.minor stdenv.cc.version || versionAtLeast finalAttrs.version "7.0.0";
   };
 })
diff --git a/pkgs/development/rocm-modules/6/rocmlir/default.nix b/pkgs/development/rocm-modules/6/rocmlir/default.nix
index d8747009a10e..efc33fd8468a 100644
--- a/pkgs/development/rocm-modules/6/rocmlir/default.nix
+++ b/pkgs/development/rocm-modules/6/rocmlir/default.nix
@@ -28,8 +28,8 @@ let
     else "";
 
   llvmNativeTarget =
-    if stdenv.isx86_64 then "X86"
-    else if stdenv.isAarch64 then "AArch64"
+    if stdenv.hostPlatform.isx86_64 then "X86"
+    else if stdenv.hostPlatform.isAarch64 then "AArch64"
     else throw "Unsupported ROCm LLVM platform";
 in stdenv.mkDerivation (finalAttrs: {
   pname = "rocmlir${suffix}";
diff --git a/pkgs/development/ruby-modules/gem-config/default.nix b/pkgs/development/ruby-modules/gem-config/default.nix
index eb55255191cf..6234fcbccdf1 100644
--- a/pkgs/development/ruby-modules/gem-config/default.nix
+++ b/pkgs/development/ruby-modules/gem-config/default.nix
@@ -49,7 +49,7 @@ in
   atk = attrs: {
     dependencies = attrs.dependencies ++ [ "gobject-introspection" ];
     nativeBuildInputs = [ rake bundler pkg-config ]
-      ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
     propagatedBuildInputs = [ gobject-introspection wrapGAppsHook3 atk ];
   };
 
@@ -70,13 +70,13 @@ in
 
   cairo = attrs: {
     nativeBuildInputs = [ pkg-config ]
-      ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
     buildInputs = [ gtk2 pcre2 xorg.libpthreadstubs xorg.libXdmcp];
   };
 
   cairo-gobject = attrs: {
     nativeBuildInputs = [ pkg-config ]
-      ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
     buildInputs = [ cairo expat pcre2 xorg.libpthreadstubs xorg.libXdmcp ];
   };
 
@@ -238,13 +238,13 @@ in
 
   gdk_pixbuf2 = attrs: {
     nativeBuildInputs = [ pkg-config bundler rake ]
-      ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
     propagatedBuildInputs = [ gobject-introspection wrapGAppsHook3 gdk-pixbuf ];
   };
 
   gdk3 = attrs: {
     nativeBuildInputs = [ pkg-config bundler rake ]
-      ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
     propagatedBuildInputs = [ gobject-introspection wrapGAppsHook3 gdk-pixbuf cairo ];
   };
 
@@ -256,8 +256,8 @@ in
 
   gio2 = attrs: {
     nativeBuildInputs = [ pkg-config gobject-introspection ]
-      ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
-    buildInputs = [ gtk2 pcre pcre2 ] ++ lib.optionals stdenv.isLinux [ util-linux libselinux libsepol ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
+    buildInputs = [ gtk2 pcre pcre2 ] ++ lib.optionals stdenv.hostPlatform.isLinux [ util-linux libselinux libsepol ];
   };
 
   gitlab-markup = attrs: { meta.priority = 1; };
@@ -345,16 +345,16 @@ in
 
   glib2 = attrs: {
     nativeBuildInputs = [ pkg-config ]
-      ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
     buildInputs = [ gtk2 pcre2 ];
   };
 
   gtk2 = attrs: {
     nativeBuildInputs = [
       binutils pkg-config
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       util-linux libselinux libsepol
-    ] ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
     propagatedBuildInputs = [
       atk
       gdk-pixbuf
@@ -368,18 +368,18 @@ in
       xorg.libpthreadstubs
       xorg.libXdmcp
     ];
-    dontStrip = stdenv.isDarwin;
+    dontStrip = stdenv.hostPlatform.isDarwin;
   };
 
   gtk3 = attrs: {
     nativeBuildInputs = [
       binutils
       pkg-config
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       util-linux
       libselinux
       libsepol
-    ] ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
     propagatedBuildInputs = [
       atk
       gdk-pixbuf
@@ -399,12 +399,12 @@ in
       libxkbcommon
       libepoxy
     ];
-    dontStrip = stdenv.isDarwin;
+    dontStrip = stdenv.hostPlatform.isDarwin;
   };
 
   gobject-introspection = attrs: {
     nativeBuildInputs = [ pkg-config pcre2 ]
-      ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
     propagatedBuildInputs = [ gobject-introspection wrapGAppsHook3 glib ];
   };
 
@@ -425,8 +425,8 @@ in
 
   grpc = attrs: {
     nativeBuildInputs = [ pkg-config ]
-      ++ lib.optional stdenv.isDarwin cctools
-      ++ lib.optional (lib.versionAtLeast attrs.version "1.53.0" && stdenv.isDarwin && stdenv.isAarch64) autoSignDarwinBinariesHook;
+      ++ lib.optional stdenv.hostPlatform.isDarwin cctools
+      ++ lib.optional (lib.versionAtLeast attrs.version "1.53.0" && stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) autoSignDarwinBinariesHook;
     buildInputs = [ openssl ];
     hardeningDisable = [ "format" ];
     env.NIX_CFLAGS_COMPILE = toString [
@@ -443,7 +443,7 @@ in
     postPatch = ''
       substituteInPlace Makefile \
         --replace '-Wno-invalid-source-encoding' ""
-    '' + lib.optionalString (lib.versionOlder attrs.version "1.53.0" && stdenv.isDarwin) ''
+    '' + lib.optionalString (lib.versionOlder attrs.version "1.53.0" && stdenv.hostPlatform.isDarwin) ''
       # For < v1.48.0
       substituteInPlace src/ruby/ext/grpc/extconf.rb \
         --replace "ENV['AR'] = 'libtool -o' if RUBY_PLATFORM =~ /darwin/" ""
@@ -454,7 +454,7 @@ in
   };
 
   hitimes = attrs: {
-    buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+    buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
   };
 
   hpricot = attrs: {
@@ -467,7 +467,7 @@ in
 
   iconv = attrs: {
     dontBuild = false;
-    buildFlags = lib.optionals stdenv.isDarwin [
+    buildFlags = lib.optionals stdenv.hostPlatform.isDarwin [
       "--with-iconv-dir=${lib.getLib libiconv}"
       "--with-iconv-include=${lib.getDev libiconv}/include"
     ];
@@ -524,7 +524,7 @@ in
     buildFlags = [
       "--with-xml2-lib=${libxml2.out}/lib"
       "--with-xml2-include=${libxml2.dev}/include/libxml2"
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "--with-iconv-dir=${lib.getLib libiconv}"
       "--with-opt-include=${lib.getDev libiconv}/include"
     ];
@@ -565,7 +565,7 @@ in
 
     # For some reason 'mathematical.so' is missing cairo, glib, and
     # lasem in its RPATH, add them explicitly here
-    postFixup = lib.optionalString stdenv.isLinux ''
+    postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
       soPath="$out/${ruby.gemPath}/gems/mathematical-${attrs.version}/lib/mathematical/mathematical.so"
       rpath="$(patchelf --print-rpath "$soPath")"
       patchelf --set-rpath "${lib.makeLibraryPath [ lasem glib cairo ]}:$rpath" "$soPath"
@@ -618,11 +618,11 @@ in
       "--with-xslt-include=${libxslt.dev}/include"
       "--with-exslt-lib=${libxslt.out}/lib"
       "--with-exslt-include=${libxslt.dev}/include"
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "--with-iconv-dir=${libiconv}"
       "--with-opt-include=${libiconv}/include"
     ];
-  } // lib.optionalAttrs stdenv.isDarwin {
+  } // lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     buildInputs = [ libxml2 ];
   });
 
@@ -653,9 +653,9 @@ in
       pcre pcre2
       xorg.libpthreadstubs
       xorg.libXdmcp
-    ] ++ lib.optionals stdenv.isDarwin [ DarwinTools ];
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ DarwinTools ];
     buildInputs = [ libdatrie libthai ]
-      ++ lib.optionals stdenv.isLinux [ libselinux libsepol util-linux ];
+      ++ lib.optionals stdenv.hostPlatform.isLinux [ libselinux libsepol util-linux ];
     propagatedBuildInputs = [ gobject-introspection wrapGAppsHook3 gtk2 ];
   };
 
@@ -791,7 +791,7 @@ in
   };
 
   rugged = attrs: {
-    nativeBuildInputs = [ cmake pkg-config which ] ++ lib.optional stdenv.isDarwin libiconv;
+    nativeBuildInputs = [ cmake pkg-config which ] ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
     buildInputs = [ openssl libssh2 zlib ];
     dontUseCmakeConfigure = true;
   };
@@ -816,7 +816,7 @@ in
     '';
   };
 
-  scrypt = attrs: lib.optionalAttrs stdenv.isDarwin {
+  scrypt = attrs: lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     dontBuild = false;
     postPatch = ''
       sed -i -e "s/-arch i386//" Rakefile ext/scrypt/Rakefile
@@ -919,6 +919,6 @@ in
   };
 
   zookeeper = attrs: {
-    buildInputs = lib.optionals stdenv.isDarwin [ cctools ];
+    buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ cctools ];
   };
 }
diff --git a/pkgs/development/ruby-modules/gem/default.nix b/pkgs/development/ruby-modules/gem/default.nix
index b2bb43736657..5ed890f8ec48 100644
--- a/pkgs/development/ruby-modules/gem/default.nix
+++ b/pkgs/development/ruby-modules/gem/default.nix
@@ -107,7 +107,7 @@ stdenv.mkDerivation ((builtins.removeAttrs attrs ["source"]) // {
 
   buildInputs = [
     ruby
-  ] ++ lib.optionals stdenv.isDarwin [ libobjc ]
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libobjc ]
     ++ buildInputs;
 
   #name = builtins.trace (attrs.name or "no attr.name" ) "${namePrefix}${gemName}-${version}";
diff --git a/pkgs/development/scheme-modules/scheme-bytestructures/default.nix b/pkgs/development/scheme-modules/scheme-bytestructures/default.nix
index b0ad8d4ec1b0..9ff23f2327eb 100644
--- a/pkgs/development/scheme-modules/scheme-bytestructures/default.nix
+++ b/pkgs/development/scheme-modules/scheme-bytestructures/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   makeFlags = [ "GUILE_AUTO_COMPILE=0" ];
 
   # In procedure bytevector-u8-ref: Argument 2 out of range
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Structured access to bytevector contents";
diff --git a/pkgs/development/skaware-packages/build-skaware-package.nix b/pkgs/development/skaware-packages/build-skaware-package.nix
index 4e912e3af2e8..abad54414566 100644
--- a/pkgs/development/skaware-packages/build-skaware-package.nix
+++ b/pkgs/development/skaware-packages/build-skaware-package.nix
@@ -84,7 +84,7 @@ stdenv.mkDerivation {
     # We assume every nix-based cross target has urandom.
     # This might not hold for e.g. BSD.
     "--with-sysdep-devurandom=yes"
-    (if stdenv.isDarwin
+    (if stdenv.hostPlatform.isDarwin
     then "--disable-shared"
     else "--enable-shared")
   ]
@@ -93,7 +93,7 @@ stdenv.mkDerivation {
     # Explicitly setting target ensures code can be compiled against a skalibs
     # binary built on a different version of darwin.
     # http://www.skarnet.org/cgi-bin/archive.cgi?1:mss:623:heiodchokfjdkonfhdph
-    ++ (lib.optional stdenv.isDarwin
+    ++ (lib.optional stdenv.hostPlatform.isDarwin
     "--build=${stdenv.hostPlatform.system}");
 
   inherit postConfigure;
diff --git a/pkgs/development/skaware-packages/tipidee/default.nix b/pkgs/development/skaware-packages/tipidee/default.nix
index 4df0a2e2a3bb..de3557d58f76 100644
--- a/pkgs/development/skaware-packages/tipidee/default.nix
+++ b/pkgs/development/skaware-packages/tipidee/default.nix
@@ -35,5 +35,5 @@ skawarePackages.buildPackage {
     mv examples $doc/share/doc/tipidee/examples
   '';
 
-  broken = stdenv.isDarwin;
+  broken = stdenv.hostPlatform.isDarwin;
 }
diff --git a/pkgs/development/tools/aapt/default.nix b/pkgs/development/tools/aapt/default.nix
index 4af284948f0b..3bdb1e2f96eb 100644
--- a/pkgs/development/tools/aapt/default.nix
+++ b/pkgs/development/tools/aapt/default.nix
@@ -12,10 +12,10 @@ stdenvNoCC.mkDerivation rec {
   src =
     let
       urlAndHash =
-        if stdenvNoCC.isLinux then {
+        if stdenvNoCC.hostPlatform.isLinux then {
           url = "https://dl.google.com/android/maven2/com/android/tools/build/aapt2/${version}/aapt2-${version}-linux.jar";
           hash = "sha256-eSQaZrRtb5aCG320hrXAL256fxa/oMhBC4hcTA1KRxs=";
-        } else if stdenvNoCC.isDarwin then {
+        } else if stdenvNoCC.hostPlatform.isDarwin then {
           url = "https://dl.google.com/android/maven2/com/android/tools/build/aapt2/${version}/aapt2-${version}-osx.jar";
           hash = "sha256-LUihNjase79JbUkHDb10A5d6pJ+VXDVfv7m09hkL8kY=";
         } else throw "Unsupport platform: ${stdenvNoCC.system}";
@@ -25,8 +25,8 @@ stdenvNoCC.mkDerivation rec {
       stripRoot = false;
     });
 
-  nativeBuildInputs = lib.optionals stdenvNoCC.isLinux [ autoPatchelfHook ];
-  buildInputs = lib.optionals stdenvNoCC.isLinux [ libcxx ];
+  nativeBuildInputs = lib.optionals stdenvNoCC.hostPlatform.isLinux [ autoPatchelfHook ];
+  buildInputs = lib.optionals stdenvNoCC.hostPlatform.isLinux [ libcxx ];
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/development/tools/amazon-qldb-shell/default.nix b/pkgs/development/tools/amazon-qldb-shell/default.nix
index 2aa7ba99479d..308552b99e2b 100644
--- a/pkgs/development/tools/amazon-qldb-shell/default.nix
+++ b/pkgs/development/tools/amazon-qldb-shell/default.nix
@@ -21,7 +21,7 @@ let
     };
 
     nativeBuildInputs = [ cmake rustPlatform.bindgenHook ];
-    buildInputs = lib.optional stdenv.isDarwin Security;
+    buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
     cargoLock = {
       lockFile = ./Cargo.lock;
diff --git a/pkgs/development/tools/analysis/cargo-tarpaulin/default.nix b/pkgs/development/tools/analysis/cargo-tarpaulin/default.nix
index 03f2e36eea9d..f426f0f35dcd 100644
--- a/pkgs/development/tools/analysis/cargo-tarpaulin/default.nix
+++ b/pkgs/development/tools/analysis/cargo-tarpaulin/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
     pkg-config
   ];
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ curl Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ curl Security ];
 
   doCheck = false;
 
diff --git a/pkgs/development/tools/analysis/dotenv-linter/default.nix b/pkgs/development/tools/analysis/dotenv-linter/default.nix
index 603cc1d1ccbb..c61f862f5178 100644
--- a/pkgs/development/tools/analysis/dotenv-linter/default.nix
+++ b/pkgs/development/tools/analysis/dotenv-linter/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-4r4NTq2rLnpmm/nwxJ9RoN2+JrUI6XKGfYFI78NY710=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "Lightning-fast linter for .env files. Written in Rust";
diff --git a/pkgs/development/tools/analysis/eresi/default.nix b/pkgs/development/tools/analysis/eresi/default.nix
index 1b3cf0936502..192d85c5a2e9 100644
--- a/pkgs/development/tools/analysis/eresi/default.nix
+++ b/pkgs/development/tools/analysis/eresi/default.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
   '';
 
   configureFlags = [
-    (if stdenv.is64bit then "--enable-32-64" else "--enable-32")
+    (if stdenv.hostPlatform.is64bit then "--enable-32-64" else "--enable-32")
     "--enable-readline"
   ];
 
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
   enableParallelInstalling = false;
 
   installTargets = lib.singleton "install"
-                ++ lib.optional stdenv.is64bit "install64";
+                ++ lib.optional stdenv.hostPlatform.is64bit "install64";
 
   meta = {
     description = "ERESI Reverse Engineering Software Interface";
diff --git a/pkgs/development/tools/analysis/flow/default.nix b/pkgs/development/tools/analysis/flow/default.nix
index 956e460deca3..2bb80f22ecc4 100644
--- a/pkgs/development/tools/analysis/flow/default.nix
+++ b/pkgs/development/tools/analysis/flow/default.nix
@@ -26,8 +26,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = with ocamlPackages; [ ocaml dune_3 findlib ocamlbuild ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ]
-    ++ (with ocamlPackages; [ core_kernel dtoa fileutils lwt_log lwt_ppx ocaml_lwt ppx_deriving ppx_gen_rec ppx_let sedlex visitors wtf8 ] ++ lib.optionals stdenv.isLinux [ inotify ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ]
+    ++ (with ocamlPackages; [ core_kernel dtoa fileutils lwt_log lwt_ppx ocaml_lwt ppx_deriving ppx_gen_rec ppx_let sedlex visitors wtf8 ] ++ lib.optionals stdenv.hostPlatform.isLinux [ inotify ]);
 
   meta = with lib; {
     description = "Static type checker for JavaScript";
diff --git a/pkgs/development/tools/analysis/lcov/default.nix b/pkgs/development/tools/analysis/lcov/default.nix
index 0ed0ef816f09..fcdd944a1ad9 100644
--- a/pkgs/development/tools/analysis/lcov/default.nix
+++ b/pkgs/development/tools/analysis/lcov/default.nix
@@ -17,7 +17,7 @@ let
     perlPackages.GD
     perlPackages.JSONXS
     perlPackages.PathTools
-  ] ++ lib.optionals (!stdenv.isDarwin) [ perlPackages.MemoryProcess ];
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ perlPackages.MemoryProcess ];
 in
 stdenv.mkDerivation rec {
   pname = "lcov";
diff --git a/pkgs/development/tools/analysis/qcachegrind/default.nix b/pkgs/development/tools/analysis/qcachegrind/default.nix
index 2d7e18d53e4c..9c0be92e2618 100644
--- a/pkgs/development/tools/analysis/qcachegrind/default.nix
+++ b/pkgs/development/tools/analysis/qcachegrind/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
      cp -p converters/op2calltree $out/bin/op2calltree
      cp -p converters/pprof2calltree $out/bin/pprof2calltree
      chmod -R +x $out/bin/
-  '' + (if stdenv.isDarwin then ''
+  '' + (if stdenv.hostPlatform.isDarwin then ''
     mkdir -p $out/Applications
     cp cgview/cgview.app/Contents/MacOS/cgview $out/bin
     cp -a qcachegrind/qcachegrind.app $out/Applications
@@ -35,7 +35,7 @@ stdenv.mkDerivation {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Qt GUI to visualize profiling data";
     license = licenses.gpl2Plus;
     platforms = platforms.unix;
diff --git a/pkgs/development/tools/analysis/radare2/default.nix b/pkgs/development/tools/analysis/radare2/default.nix
index 8d75f994aee6..95bcbf055b9a 100644
--- a/pkgs/development/tools/analysis/radare2/default.nix
+++ b/pkgs/development/tools/analysis/radare2/default.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation (finalAttrs: {
     popd
   '';
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -add_rpath $out/lib $out/lib/libr_io.${finalAttrs.version}.dylib
   '';
 
diff --git a/pkgs/development/tools/analysis/rizin/cutter.nix b/pkgs/development/tools/analysis/rizin/cutter.nix
index 44954c62a3c2..123b58e8a21d 100644
--- a/pkgs/development/tools/analysis/rizin/cutter.nix
+++ b/pkgs/development/tools/analysis/rizin/cutter.nix
@@ -52,7 +52,7 @@ let cutter = stdenv.mkDerivation rec {
     qttools
     qtwebengine
     rizin
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
   ];
 
diff --git a/pkgs/development/tools/analysis/rizin/default.nix b/pkgs/development/tools/analysis/rizin/default.nix
index f83c3dcdcfac..6336d603a61b 100644
--- a/pkgs/development/tools/analysis/rizin/default.nix
+++ b/pkgs/development/tools/analysis/rizin/default.nix
@@ -83,7 +83,7 @@ let rizin = stdenv.mkDerivation rec {
       fi
     done
     export LIBRARY_PATH
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace binrz/rizin/macos_sign.sh \
       --replace 'codesign' '# codesign'
   '';
diff --git a/pkgs/development/tools/analysis/rizin/rz-ghidra.nix b/pkgs/development/tools/analysis/rizin/rz-ghidra.nix
index fcc014f9944d..d9ef68b8620e 100644
--- a/pkgs/development/tools/analysis/rizin/rz-ghidra.nix
+++ b/pkgs/development/tools/analysis/rizin/rz-ghidra.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   meta = with lib; {
     # errors out with undefined symbols from Cutter
-    broken = enableCutterPlugin && stdenv.isDarwin;
+    broken = enableCutterPlugin && stdenv.hostPlatform.isDarwin;
     description = "Deep ghidra decompiler and sleigh disassembler integration for rizin";
     homepage = finalAttrs.src.meta.homepage;
     changelog = "${finalAttrs.src.meta.homepage}/releases/tag/${finalAttrs.src.rev}";
diff --git a/pkgs/development/tools/analysis/splint/default.nix b/pkgs/development/tools/analysis/splint/default.nix
index e22a8b380926..7bff76d87dbd 100644
--- a/pkgs/development/tools/analysis/splint/default.nix
+++ b/pkgs/development/tools/analysis/splint/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "02pv8kscsrkrzip9r08pfs9xs98q74c52mlxzbii6cv6vx1vd3f7";
   };
 
-  patches = [ ./tmpdir.patch ] ++ lib.optional stdenv.isDarwin ./darwin.patch;
+  patches = [ ./tmpdir.patch ] ++ lib.optional stdenv.hostPlatform.isDarwin ./darwin.patch;
 
   buildInputs = [ flex ];
 
diff --git a/pkgs/development/tools/analysis/valgrind/default.nix b/pkgs/development/tools/analysis/valgrind/default.nix
index c54fb7bfeeab..fe44e8b1922f 100644
--- a/pkgs/development/tools/analysis/valgrind/default.nix
+++ b/pkgs/development/tools/analysis/valgrind/default.nix
@@ -49,18 +49,18 @@ stdenv.mkDerivation rec {
 
   # GDB is needed to provide a sane default for `--db-command'.
   # Perl is needed for `callgrind_{annotate,control}'.
-  buildInputs = [ gdb perl ]  ++ lib.optionals (stdenv.isDarwin) [ bootstrap_cmds xnu ];
+  buildInputs = [ gdb perl ]  ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ bootstrap_cmds xnu ];
 
   # Perl is also a native build input.
   nativeBuildInputs = [ autoreconfHook perl ];
 
   enableParallelBuilding = true;
-  separateDebugInfo = stdenv.isLinux;
+  separateDebugInfo = stdenv.hostPlatform.isLinux;
 
-  preConfigure = lib.optionalString stdenv.isFreeBSD ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isFreeBSD ''
     substituteInPlace configure --replace '`uname -r`' \
         ${toString stdenv.hostPlatform.parsed.kernel.version}.0-
-  '' + lib.optionalString stdenv.isDarwin (
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin (
     let OSRELEASE = ''
       $(awk -F '"' '/#define OSRELEASE/{ print $2 }' \
       <${xnu}/Library/Frameworks/Kernel.framework/Headers/libkern/version.h)'';
@@ -133,6 +133,6 @@ stdenv.mkDerivation rec {
       (x86 ++ power ++ s390x ++ armv7 ++ aarch64 ++ mips)
       (darwin ++ freebsd ++ illumos ++ linux);
     badPlatforms = [ lib.systems.inspect.platformPatterns.isStatic ];
-    broken = stdenv.isDarwin; # https://hydra.nixos.org/build/128521440/nixlog/2
+    broken = stdenv.hostPlatform.isDarwin; # https://hydra.nixos.org/build/128521440/nixlog/2
   };
 }
diff --git a/pkgs/development/tools/bacon/default.nix b/pkgs/development/tools/bacon/default.nix
index afaa956bbcab..42eff7fface2 100644
--- a/pkgs/development/tools/bacon/default.nix
+++ b/pkgs/development/tools/bacon/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-YaVnfwf0jyZTe6B35z9Zm9247kGU/G6nu23sHg9lnAk=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
   ];
 
diff --git a/pkgs/development/tools/bin2c/default.nix b/pkgs/development/tools/bin2c/default.nix
index 2528b1ea0961..7ac93c4539b9 100644
--- a/pkgs/development/tools/bin2c/default.nix
+++ b/pkgs/development/tools/bin2c/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation {
 
   makeFlags = [ "prefix=$(out)" ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   checkTarget = "test";
   checkInputs = [ util-linux ]; # uuidgen
 
diff --git a/pkgs/development/tools/build-managers/bazel/bazel_5/default.nix b/pkgs/development/tools/build-managers/bazel/bazel_5/default.nix
index c2210358344c..da81c1fb4e9b 100644
--- a/pkgs/development/tools/build-managers/bazel/bazel_5/default.nix
+++ b/pkgs/development/tools/build-managers/bazel/bazel_5/default.nix
@@ -522,7 +522,7 @@ stdenv.mkDerivation rec {
     which
     zip
     python3.pkgs.absl-py   # Needed to build fish completion
-  ] ++ lib.optionals (stdenv.isDarwin) [ cctools libcxx CoreFoundation CoreServices Foundation ];
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ cctools libcxx CoreFoundation CoreServices Foundation ];
 
   # Bazel makes extensive use of symlinks in the WORKSPACE.
   # This causes problems with infinite symlinks if the build output is in the same location as the
@@ -650,7 +650,7 @@ stdenv.mkDerivation rec {
     # stored non-contiguously in the binary due to gcc optimisations, which leads
     # Nix to miss the hash when scanning for dependencies
     echo "${bazelRC}" >> $out/nix-support/depends
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     echo "${cctools}" >> $out/nix-support/depends
   '';
 
diff --git a/pkgs/development/tools/build-managers/bazel/bazel_6/default.nix b/pkgs/development/tools/build-managers/bazel/bazel_6/default.nix
index a49530ecfc69..b1069673f14a 100644
--- a/pkgs/development/tools/build-managers/bazel/bazel_6/default.nix
+++ b/pkgs/development/tools/build-managers/bazel/bazel_6/default.nix
@@ -583,7 +583,7 @@ stdenv.mkDerivation rec {
     which
     zip
     python3.pkgs.absl-py   # Needed to build fish completion
-  ] ++ lib.optionals (stdenv.isDarwin) [ cctools libcxx sigtool CoreFoundation CoreServices Foundation ];
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [ cctools libcxx sigtool CoreFoundation CoreServices Foundation ];
 
   # Bazel makes extensive use of symlinks in the WORKSPACE.
   # This causes problems with infinite symlinks if the build output is in the same location as the
@@ -622,7 +622,7 @@ stdenv.mkDerivation rec {
   '' +
   # disable execlog parser on darwin, since it fails to build
   # see https://github.com/NixOS/nixpkgs/pull/273774#issuecomment-1865322055
-  lib.optionalString (!stdenv.isDarwin) ''
+  lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     # need to change directory for bazel to find the workspace
     cd ./bazel_src
     # build execlog tooling
@@ -649,7 +649,7 @@ stdenv.mkDerivation rec {
   '' +
   # disable execlog parser on darwin, since it fails to build
   # see https://github.com/NixOS/nixpkgs/pull/273774#issuecomment-1865322055
-  (lib.optionalString (!stdenv.isDarwin) ''
+  (lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mkdir $out/share
     cp ./bazel_src/bazel-bin/src/tools/execlog/parser_deploy.jar $out/share/parser_deploy.jar
     cat <<EOF > $out/bin/bazel-execlog
@@ -730,7 +730,7 @@ stdenv.mkDerivation rec {
     # stored non-contiguously in the binary due to gcc optimisations, which leads
     # Nix to miss the hash when scanning for dependencies
     echo "${bazelRC}" >> $out/nix-support/depends
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     echo "${cctools}" >> $out/nix-support/depends
   '';
 
diff --git a/pkgs/development/tools/build-managers/bazel/bazel_7/cpp-test.nix b/pkgs/development/tools/build-managers/bazel/bazel_7/cpp-test.nix
index 5722d26ea1ed..7f98f512c519 100644
--- a/pkgs/development/tools/build-managers/bazel/bazel_7/cpp-test.nix
+++ b/pkgs/development/tools/build-managers/bazel/bazel_7/cpp-test.nix
@@ -56,7 +56,7 @@ let
     cp ${./cpp-test-MODULE.bazel.lock} $out/MODULE.bazel.lock
     echo > $out/WORSPACE
   ''
-  + (lib.optionalString stdenv.isDarwin ''
+  + (lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/tools
     cp ${toolsBazel} $out/tools/bazel
   ''));
@@ -71,10 +71,10 @@ let
         --verbose_failures \
         --repository_cache=${mergedDistDir} \
         --curses=no \
-    '' + lib.optionalString (stdenv.isDarwin) ''
+    '' + lib.optionalString (stdenv.hostPlatform.isDarwin) ''
         --cxxopt=-x --cxxopt=c++ \
         --host_cxxopt=-x --host_cxxopt=c++ \
-    '' + lib.optionalString (stdenv.isDarwin && Foundation != null) ''
+    '' + lib.optionalString (stdenv.hostPlatform.isDarwin && Foundation != null) ''
         --linkopt=-Wl,-F${Foundation}/Library/Frameworks \
         --linkopt=-L${darwin.libobjc}/lib \
     '' + ''
diff --git a/pkgs/development/tools/build-managers/bazel/bazel_7/default.nix b/pkgs/development/tools/build-managers/bazel/bazel_7/default.nix
index 1a31de96ca4f..661eb1a71aa9 100644
--- a/pkgs/development/tools/build-managers/bazel/bazel_7/default.nix
+++ b/pkgs/development/tools/build-managers/bazel/bazel_7/default.nix
@@ -419,7 +419,7 @@ stdenv.mkDerivation rec {
     which
     zip
     python3.pkgs.absl-py # Needed to build fish completion
-  ] ++ lib.optionals (stdenv.isDarwin) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
     cctools
     libcxx
     Foundation
@@ -561,7 +561,7 @@ stdenv.mkDerivation rec {
     # stored non-contiguously in the binary due to gcc optimisations, which leads
     # Nix to miss the hash when scanning for dependencies
     echo "${bazelRC}" >> $out/nix-support/depends
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     echo "${cctools}" >> $out/nix-support/depends
   '';
 
diff --git a/pkgs/development/tools/build-managers/bazel/bazel_7/java-test.nix b/pkgs/development/tools/build-managers/bazel/bazel_7/java-test.nix
index 51fea3e32dc3..752ddc444855 100644
--- a/pkgs/development/tools/build-managers/bazel/bazel_7/java-test.nix
+++ b/pkgs/development/tools/build-managers/bazel/bazel_7/java-test.nix
@@ -55,7 +55,7 @@ let
     cp ${./cpp-test-MODULE.bazel} $out/MODULE.bazel
     cp ${./cpp-test-MODULE.bazel.lock} $out/MODULE.bazel.lock
   ''
-  + (lib.optionalString stdenv.isDarwin ''
+  + (lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/tools
     cp ${toolsBazel} $out/tools/bazel
   ''));
diff --git a/pkgs/development/tools/build-managers/bazel/bazel_7/protobuf-test.nix b/pkgs/development/tools/build-managers/bazel/bazel_7/protobuf-test.nix
index ebe4f13346bc..309bae9b2387 100644
--- a/pkgs/development/tools/build-managers/bazel/bazel_7/protobuf-test.nix
+++ b/pkgs/development/tools/build-managers/bazel/bazel_7/protobuf-test.nix
@@ -122,7 +122,7 @@ let
     cp ${personProto} $out/person/person.proto
     cp ${personBUILD} $out/person/BUILD.bazel
   ''
-  + (lib.optionalString stdenv.isDarwin ''
+  + (lib.optionalString stdenv.hostPlatform.isDarwin ''
     echo 'tools bazel created'
     mkdir $out/tools
     install ${toolsBazel} $out/tools/bazel
@@ -155,7 +155,7 @@ let
         --host_javabase='@local_jdk//:jdk' \
         --java_toolchain='@bazel_tools//tools/jdk:toolchain_hostjdk8' \
         --javabase='@local_jdk//:jdk' \
-    '' + lib.optionalString (stdenv.isDarwin) ''
+    '' + lib.optionalString (stdenv.hostPlatform.isDarwin) ''
         --cxxopt=-x --cxxopt=c++ --host_cxxopt=-x --host_cxxopt=c++ \
     '' + ''
 
diff --git a/pkgs/development/tools/build-managers/bazel/cpp-test.nix b/pkgs/development/tools/build-managers/bazel/cpp-test.nix
index 6759bf14de10..cc3bc8d9a141 100644
--- a/pkgs/development/tools/build-managers/bazel/cpp-test.nix
+++ b/pkgs/development/tools/build-managers/bazel/cpp-test.nix
@@ -36,7 +36,7 @@ let
     cp -r ${bazel-examples}/cpp-tutorial/stage3 $out
     find $out -type d -exec chmod 755 {} \;
   ''
-  + (lib.optionalString stdenv.isDarwin ''
+  + (lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/tools
     cp ${toolsBazel} $out/tools/bazel
   ''));
@@ -51,10 +51,10 @@ let
         --distdir=${distDir} \
         --curses=no \
         ${extraBazelArgs} \
-    '' + lib.optionalString (stdenv.isDarwin) ''
+    '' + lib.optionalString (stdenv.hostPlatform.isDarwin) ''
         --cxxopt=-x --cxxopt=c++ --host_cxxopt=-x --host_cxxopt=c++ \
         --linkopt=-stdlib=libc++ --host_linkopt=-stdlib=libc++ \
-    '' + lib.optionalString (stdenv.isDarwin && Foundation != null) ''
+    '' + lib.optionalString (stdenv.hostPlatform.isDarwin && Foundation != null) ''
         --linkopt=-Wl,-F${Foundation}/Library/Frameworks \
         --linkopt=-L${darwin.libobjc}/lib \
     '';
diff --git a/pkgs/development/tools/build-managers/bazel/java-test.nix b/pkgs/development/tools/build-managers/bazel/java-test.nix
index 3890d45d2b94..afdacaf6a844 100644
--- a/pkgs/development/tools/build-managers/bazel/java-test.nix
+++ b/pkgs/development/tools/build-managers/bazel/java-test.nix
@@ -35,7 +35,7 @@ let
     cp -r ${bazel-examples}/java-tutorial $out
     find $out -type d -exec chmod 755 {} \;
   ''
-  + (lib.optionalString stdenv.isDarwin ''
+  + (lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/tools
     cp ${toolsBazel} $out/tools/bazel
   ''));
diff --git a/pkgs/development/tools/build-managers/bazel/protobuf-test.nix b/pkgs/development/tools/build-managers/bazel/protobuf-test.nix
index 0466404ced96..5880c5dd95fe 100644
--- a/pkgs/development/tools/build-managers/bazel/protobuf-test.nix
+++ b/pkgs/development/tools/build-managers/bazel/protobuf-test.nix
@@ -154,7 +154,7 @@ let
     cp ${personProto} $out/person/person.proto
     cp ${personBUILD} $out/person/BUILD.bazel
   ''
-  + (lib.optionalString stdenv.isDarwin ''
+  + (lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/tools
     cp ${toolsBazel} $out/tools/bazel
   ''));
@@ -178,7 +178,7 @@ let
         --host_javabase='@local_jdk//:jdk' \
         --java_toolchain='@bazel_tools//tools/jdk:toolchain_hostjdk8' \
         --javabase='@local_jdk//:jdk' \
-    '' + lib.optionalString (stdenv.isDarwin) ''
+    '' + lib.optionalString (stdenv.hostPlatform.isDarwin) ''
         --cxxopt=-x --cxxopt=c++ --host_cxxopt=-x --host_cxxopt=c++ \
         --linkopt=-stdlib=libc++ --host_linkopt=-stdlib=libc++ \
     '';
diff --git a/pkgs/development/tools/build-managers/bazel/python-bin-path-test.nix b/pkgs/development/tools/build-managers/bazel/python-bin-path-test.nix
index e0e59fb8891d..59f5d0c01fcc 100644
--- a/pkgs/development/tools/build-managers/bazel/python-bin-path-test.nix
+++ b/pkgs/development/tools/build-managers/bazel/python-bin-path-test.nix
@@ -65,7 +65,7 @@ let
     cp ${pythonBin} $out/python/bin.py
     cp ${pythonBUILD} $out/python/BUILD.bazel
   ''
-  + (lib.optionalString stdenv.isDarwin ''
+  + (lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/tools
     cp ${toolsBazel} $out/tools/bazel
   ''));
diff --git a/pkgs/development/tools/build-managers/bloop/default.nix b/pkgs/development/tools/build-managers/bloop/default.nix
index 01308d89050c..b0d9c72ad224 100644
--- a/pkgs/development/tools/build-managers/bloop/default.nix
+++ b/pkgs/development/tools/build-managers/bloop/default.nix
@@ -13,9 +13,9 @@ stdenv.mkDerivation rec {
   version = "2.0.2";
 
   platform =
-    if stdenv.isLinux && stdenv.isx86_64 then "x86_64-pc-linux"
-    else if stdenv.isDarwin && stdenv.isx86_64 then "x86_64-apple-darwin"
-    else if stdenv.isDarwin && stdenv.isAarch64 then "aarch64-apple-darwin"
+    if stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64 then "x86_64-pc-linux"
+    else if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64 then "x86_64-apple-darwin"
+    else if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 then "aarch64-apple-darwin"
     else throw "unsupported platform";
 
   bloop-bash = fetchurl {
@@ -36,15 +36,15 @@ stdenv.mkDerivation rec {
   bloop-binary = fetchurl rec {
     url = "https://github.com/scalacenter/bloop/releases/download/v${version}/bloop-${platform}";
     sha256 =
-      if stdenv.isLinux && stdenv.isx86_64 then "sha256-xYVfgi3ANjBiuf4/5FDgSYDL/fPsvuJn4jFxAEVYct4="
-      else if stdenv.isDarwin && stdenv.isx86_64 then "sha256-lq0S2AsulcUUYDd3qnWonwd/W0/gb7lJwC+QTYTlTdg="
-      else if stdenv.isDarwin && stdenv.isAarch64 then "sha256-e+9Q7xIEsHloaKOj13vZnGs2vulkOJv7tCOuACobHvk="
+      if stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64 then "sha256-xYVfgi3ANjBiuf4/5FDgSYDL/fPsvuJn4jFxAEVYct4="
+      else if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64 then "sha256-lq0S2AsulcUUYDd3qnWonwd/W0/gb7lJwC+QTYTlTdg="
+      else if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 then "sha256-e+9Q7xIEsHloaKOj13vZnGs2vulkOJv7tCOuACobHvk="
       else throw "unsupported platform";
   };
 
   dontUnpack = true;
   nativeBuildInputs = [ installShellFiles makeWrapper ]
-    ++ lib.optional stdenv.isLinux autoPatchelfHook;
+    ++ lib.optional stdenv.hostPlatform.isLinux autoPatchelfHook;
   buildInputs = [ stdenv.cc.cc.lib zlib ];
   propagatedBuildInputs = [ jre ];
 
diff --git a/pkgs/development/tools/build-managers/buck/default.nix b/pkgs/development/tools/build-managers/buck/default.nix
index f494e4053525..06246f6b081a 100644
--- a/pkgs/development/tools/build-managers/buck/default.nix
+++ b/pkgs/development/tools/build-managers/buck/default.nix
@@ -42,6 +42,6 @@ stdenv.mkDerivation rec {
     license = licenses.asl20;
     platforms = platforms.all;
     # https://github.com/facebook/buck/issues/2666
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/tools/build-managers/build2/bpkg.nix b/pkgs/development/tools/build-managers/build2/bpkg.nix
index e4d212858690..bf9951e7ae17 100644
--- a/pkgs/development/tools/build-managers/build2/bpkg.nix
+++ b/pkgs/development/tools/build-managers/build2/bpkg.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
     openssl
   ];
 
-  doCheck = !stdenv.isDarwin; # tests hang
+  doCheck = !stdenv.hostPlatform.isDarwin; # tests hang
 
   # Failing test
   postPatch = ''
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     "config.bin.lib=${build2.configSharedStatic enableShared enableStatic}"
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -add_rpath '${lib.getLib build2}/lib' "''${!outputBin}/bin/bpkg"
   '';
 
diff --git a/pkgs/development/tools/build-managers/build2/default.nix b/pkgs/development/tools/build-managers/build2/default.nix
index c420bd8c7320..c02334c98a51 100644
--- a/pkgs/development/tools/build-managers/build2/default.nix
+++ b/pkgs/development/tools/build-managers/build2/default.nix
@@ -72,7 +72,7 @@ stdenv.mkDerivation rec {
     "config.build2.libpkgconf=true"
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -add_rpath "''${!outputLib}/lib" "''${!outputBin}/bin/b"
   '';
 
diff --git a/pkgs/development/tools/build-managers/conan/default.nix b/pkgs/development/tools/build-managers/conan/default.nix
index 5e7a0e866cff..f9bb2457a4fa 100644
--- a/pkgs/development/tools/build-managers/conan/default.nix
+++ b/pkgs/development/tools/build-managers/conan/default.nix
@@ -39,7 +39,7 @@ python3.pkgs.buildPythonApplication rec {
     requests
     tqdm
     urllib3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     idna
     cryptography
     pyopenssl
@@ -49,7 +49,7 @@ python3.pkgs.buildPythonApplication rec {
     git
     pkg-config
     zlib
-  ] ++ lib.optionals (stdenv.isDarwin) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
     xcbuild.xcrun
   ] ++ (with python3.pkgs; [
     mock
@@ -73,7 +73,7 @@ python3.pkgs.buildPythonApplication rec {
   disabledTests = [
     # Tests require network access
     "TestFTP"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # Rejects paths containing nix
     "test_conditional_os"
     # Requires Apple Clang
diff --git a/pkgs/development/tools/build-managers/corrosion/default.nix b/pkgs/development/tools/build-managers/corrosion/default.nix
index 6809ee7ffd7a..500e56e9cfcc 100644
--- a/pkgs/development/tools/build-managers/corrosion/default.nix
+++ b/pkgs/development/tools/build-managers/corrosion/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-vaNXXXaGqYNmhonU+ANN857LAUgwv+PMcON+nBuUoeo=";
   };
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   nativeBuildInputs = [
     cmake
diff --git a/pkgs/development/tools/build-managers/fac/default.nix b/pkgs/development/tools/build-managers/fac/default.nix
index b44cefe6a953..63d53e123aad 100644
--- a/pkgs/development/tools/build-managers/fac/default.nix
+++ b/pkgs/development/tools/build-managers/fac/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
   };
 
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
   cargoHash = "sha256-XT4FQVE+buORuZAFZK5Qnf/Fl3QSvw4SHUuCzWhxUdk=";
 
   # fac includes a unit test called ls_files_works which assumes it's
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = ''
       A build system that uses ptrace to handle dependencies automatically
     '';
diff --git a/pkgs/development/tools/build-managers/gn/generic.nix b/pkgs/development/tools/build-managers/gn/generic.nix
index fe74486ccfaa..71242ceaba84 100644
--- a/pkgs/development/tools/build-managers/gn/generic.nix
+++ b/pkgs/development/tools/build-managers/gn/generic.nix
@@ -28,7 +28,7 @@ in stdenv.mkDerivation {
   };
 
   nativeBuildInputs = [ ninja python3 ];
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin; with apple_sdk.frameworks; [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin; with apple_sdk.frameworks; [
     libobjc
     cctools
 
diff --git a/pkgs/development/tools/build-managers/gnumake/4.2/default.nix b/pkgs/development/tools/build-managers/gnumake/4.2/default.nix
index ac22eee7e206..1afadceb9b77 100644
--- a/pkgs/development/tools/build-managers/gnumake/4.2/default.nix
+++ b/pkgs/development/tools/build-managers/gnumake/4.2/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
     # a second. So, tell Make to ignore nanoseconds in mtime here by
     # overriding the autoconf test for the struct.
     # See https://github.com/NixOS/nixpkgs/issues/51221 for discussion.
-    ++ lib.optional stdenv.isDarwin "ac_cv_struct_st_mtim_nsec=no";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "ac_cv_struct_st_mtim_nsec=no";
 
   outputs = [ "out" "man" "info" ];
 
diff --git a/pkgs/development/tools/build-managers/gnumake/default.nix b/pkgs/development/tools/build-managers/gnumake/default.nix
index fcbb23a7119e..5f215be7386a 100644
--- a/pkgs/development/tools/build-managers/gnumake/default.nix
+++ b/pkgs/development/tools/build-managers/gnumake/default.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
     # a second. So, tell Make to ignore nanoseconds in mtime here by
     # overriding the autoconf test for the struct.
     # See https://github.com/NixOS/nixpkgs/issues/51221 for discussion.
-    ++ lib.optional stdenv.isDarwin "ac_cv_struct_st_mtim_nsec=no";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "ac_cv_struct_st_mtim_nsec=no";
 
   outputs = [ "out" "man" "info" ];
   separateDebugInfo = true;
diff --git a/pkgs/development/tools/build-managers/gradle/default.nix b/pkgs/development/tools/build-managers/gradle/default.nix
index a9827e7a0a7e..61510384e31e 100644
--- a/pkgs/development/tools/build-managers/gradle/default.nix
+++ b/pkgs/development/tools/build-managers/gradle/default.nix
@@ -61,7 +61,7 @@ rec {
       nativeBuildInputs = [
         makeWrapper
         unzip
-      ] ++ lib.optionals stdenv.isLinux [
+      ] ++ lib.optionals stdenv.hostPlatform.isLinux [
         autoPatchelfHook
       ];
 
@@ -98,9 +98,9 @@ rec {
             --add-flags "-classpath $gradle_launcher_jar org.gradle.launcher.GradleMain${toolchain.property}"
         '';
 
-      dontFixup = !stdenv.isLinux;
+      dontFixup = !stdenv.hostPlatform.isLinux;
 
-      fixupPhase = let arch = if stdenv.is64bit then "amd64" else "i386";
+      fixupPhase = let arch = if stdenv.hostPlatform.is64bit then "amd64" else "i386";
       in ''
         . ${./patching.sh}
 
diff --git a/pkgs/development/tools/build-managers/gradle/fetch-deps.nix b/pkgs/development/tools/build-managers/gradle/fetch-deps.nix
index 304898c0131c..a0d3b10ba863 100644
--- a/pkgs/development/tools/build-managers/gradle/fetch-deps.nix
+++ b/pkgs/development/tools/build-managers/gradle/fetch-deps.nix
@@ -22,7 +22,7 @@ in
 , data
 # redirect stdout to stderr to allow the update script to be used with update script combinators
 , silent ? true
-, useBwrap ? stdenv.isLinux
+, useBwrap ? stdenv.hostPlatform.isLinux
 } @ attrs:
 
 let
diff --git a/pkgs/development/tools/build-managers/moon/default.nix b/pkgs/development/tools/build-managers/moon/default.nix
index adb3c306a779..f576caef09df 100644
--- a/pkgs/development/tools/build-managers/moon/default.nix
+++ b/pkgs/development/tools/build-managers/moon/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   buildInputs = [ openssl ] ++
-    lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/development/tools/build-managers/msbuild/default.nix b/pkgs/development/tools/build-managers/msbuild/default.nix
index 94469669a59e..8710ea93c0a9 100644
--- a/pkgs/development/tools/build-managers/msbuild/default.nix
+++ b/pkgs/development/tools/build-managers/msbuild/default.nix
@@ -45,7 +45,7 @@ mkPackage rec {
 
   # https://github.com/NixOS/nixpkgs/issues/38991
   # bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
-  LOCALE_ARCHIVE = lib.optionalString stdenv.isLinux
+  LOCALE_ARCHIVE = lib.optionalString stdenv.hostPlatform.isLinux
       "${glibcLocales}/lib/locale/locale-archive";
 
   postPatch = ''
diff --git a/pkgs/development/tools/build-managers/sbt/default.nix b/pkgs/development/tools/build-managers/sbt/default.nix
index 3977d5b18441..9c03f03be775 100644
--- a/pkgs/development/tools/build-managers/sbt/default.nix
+++ b/pkgs/development/tools/build-managers/sbt/default.nix
@@ -20,9 +20,9 @@ stdenv.mkDerivation (finalAttrs: {
     echo -java-home ${jre.home} >>conf/sbtopts
   '';
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     stdenv.cc.cc # libstdc++.so.6
     zlib
   ];
@@ -39,7 +39,7 @@ stdenv.mkDerivation (finalAttrs: {
     cp -ra . $out/share/sbt
     ln -sT ../share/sbt/bin/sbt $out/bin/sbt
     ln -sT ../share/sbt/bin/sbtn-${
-      if (stdenv.isDarwin) then "universal-apple-darwin"
+      if (stdenv.hostPlatform.isDarwin) then "universal-apple-darwin"
       else if (stdenv.hostPlatform.isAarch64) then "aarch64-pc-linux"
       else "x86_64-pc-linux"
     } $out/bin/sbtn
diff --git a/pkgs/development/tools/build-managers/scala-cli/default.nix b/pkgs/development/tools/build-managers/scala-cli/default.nix
index 5e2058899393..3a0eb79b2430 100644
--- a/pkgs/development/tools/build-managers/scala-cli/default.nix
+++ b/pkgs/development/tools/build-managers/scala-cli/default.nix
@@ -22,7 +22,7 @@ in
 stdenv.mkDerivation {
   inherit pname version;
   nativeBuildInputs = [ installShellFiles makeWrapper ]
-    ++ lib.optional stdenv.isLinux autoPatchelfHook;
+    ++ lib.optional stdenv.hostPlatform.isLinux autoPatchelfHook;
   buildInputs =
     assert lib.assertMsg (lib.versionAtLeast jre.version "17.0.0") ''
       scala-cli requires Java 17 or newer, but ${jre.name} is ${jre.version}
@@ -54,7 +54,7 @@ stdenv.mkDerivation {
   # We need to call autopatchelf before generating completions
   dontAutoPatchelf = true;
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     autoPatchelf $out
   '' + ''
     # hack to ensure the completion function looks right
diff --git a/pkgs/development/tools/buildah/default.nix b/pkgs/development/tools/buildah/default.nix
index c242ab3b4ff3..fc9660eab411 100644
--- a/pkgs/development/tools/buildah/default.nix
+++ b/pkgs/development/tools/buildah/default.nix
@@ -36,7 +36,7 @@ buildGoModule rec {
 
   buildInputs = [
     gpgme
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     btrfs-progs
     libapparmor
     libseccomp
diff --git a/pkgs/development/tools/buildah/wrapper.nix b/pkgs/development/tools/buildah/wrapper.nix
index 60670791827d..1b27c4899715 100644
--- a/pkgs/development/tools/buildah/wrapper.nix
+++ b/pkgs/development/tools/buildah/wrapper.nix
@@ -19,7 +19,7 @@
 
 let
   binPath = lib.makeBinPath ([
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     runc
     crun
     conmon
@@ -34,7 +34,7 @@ let
 
     # this only works for some binaries, others may need to be added to `binPath` or in the modules
     paths = [
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       aardvark-dns
       netavark
       passt
diff --git a/pkgs/development/tools/buildkit/default.nix b/pkgs/development/tools/buildkit/default.nix
index bddb8432109d..355233493c66 100644
--- a/pkgs/development/tools/buildkit/default.nix
+++ b/pkgs/development/tools/buildkit/default.nix
@@ -13,7 +13,7 @@ buildGoModule rec {
 
   vendorHash = null;
 
-  subPackages = [ "cmd/buildctl" ] ++ lib.optionals stdenv.isLinux [ "cmd/buildkitd" ];
+  subPackages = [ "cmd/buildctl" ] ++ lib.optionals stdenv.hostPlatform.isLinux [ "cmd/buildkitd" ];
 
   ldflags = [ "-s" "-w" "-X github.com/moby/buildkit/version.Version=${version}" "-X github.com/moby/buildkit/version.Revision=${src.rev}" ];
 
diff --git a/pkgs/development/tools/chit/default.nix b/pkgs/development/tools/chit/default.nix
index 03c301f19362..7d140bf2a794 100644
--- a/pkgs/development/tools/chit/default.nix
+++ b/pkgs/development/tools/chit/default.nix
@@ -22,11 +22,11 @@ rustPlatform.buildRustPackage rec {
     lockFile = ./Cargo.lock;
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/cocogitto/default.nix b/pkgs/development/tools/cocogitto/default.nix
index 6760b4754203..848b6fb2f10d 100644
--- a/pkgs/development/tools/cocogitto/default.nix
+++ b/pkgs/development/tools/cocogitto/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = [ libgit2 ] ++ lib.optional stdenv.isDarwin Security;
+  buildInputs = [ libgit2 ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
     installShellCompletion --cmd cog \
diff --git a/pkgs/development/tools/comby/default.nix b/pkgs/development/tools/comby/default.nix
index ad7ab8559688..4299c122109a 100644
--- a/pkgs/development/tools/comby/default.nix
+++ b/pkgs/development/tools/comby/default.nix
@@ -92,7 +92,7 @@ mkCombyPackage {
     ocamlPackages.dune-configurator
     combyKernel
     combySemantic
-  ] ++ (if !stdenv.isAarch32 && !stdenv.isAarch64 then
+  ] ++ (if !stdenv.hostPlatform.isAarch32 && !stdenv.hostPlatform.isAarch64 then
     [ ocamlPackages.hack_parallel ]
   else
     [ ]);
diff --git a/pkgs/development/tools/confluent-cli/default.nix b/pkgs/development/tools/confluent-cli/default.nix
index e614fe7d947d..09ca1e7ff8f1 100644
--- a/pkgs/development/tools/confluent-cli/default.nix
+++ b/pkgs/development/tools/confluent-cli/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   installPhase = ''
     mkdir -p $out/{bin,share/doc/confluent-cli}
diff --git a/pkgs/development/tools/continuous-integration/buildbot/master.nix b/pkgs/development/tools/continuous-integration/buildbot/master.nix
index d0a2efb32b57..a9e3b01e07e6 100644
--- a/pkgs/development/tools/continuous-integration/buildbot/master.nix
+++ b/pkgs/development/tools/continuous-integration/buildbot/master.nix
@@ -147,7 +147,7 @@ buildPythonApplication rec {
   SQLALCHEMY_SILENCE_UBER_WARNING = 1;
 
   # TimeoutErrors on slow machines -> aarch64
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
 
   preCheck = ''
     export LC_ALL="en_US.UTF-8"
@@ -162,7 +162,7 @@ buildPythonApplication rec {
   passthru = {
     inherit withPlugins;
     updateScript = ./update.sh;
-  } // lib.optionalAttrs stdenv.isLinux {
+  } // lib.optionalAttrs stdenv.hostPlatform.isLinux {
     tests = {
       inherit (nixosTests) buildbot;
     };
@@ -174,6 +174,6 @@ buildPythonApplication rec {
     changelog = "https://github.com/buildbot/buildbot/releases/tag/v${version}";
     maintainers = teams.buildbot.members;
     license = licenses.gpl2Only;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/tools/continuous-integration/buildbot/worker.nix b/pkgs/development/tools/continuous-integration/buildbot/worker.nix
index aacdf92e30a5..3abc10134322 100644
--- a/pkgs/development/tools/continuous-integration/buildbot/worker.nix
+++ b/pkgs/development/tools/continuous-integration/buildbot/worker.nix
@@ -56,6 +56,6 @@ buildPythonPackage ({
     description = "Buildbot Worker Daemon";
     maintainers = teams.buildbot.members;
     license = licenses.gpl2;
-    broken = stdenv.isDarwin; # https://hydra.nixos.org/build/243534318/nixlog/6
+    broken = stdenv.hostPlatform.isDarwin; # https://hydra.nixos.org/build/243534318/nixlog/6
   };
 })
diff --git a/pkgs/development/tools/continuous-integration/buildkite-test-collector-rust/default.nix b/pkgs/development/tools/continuous-integration/buildkite-test-collector-rust/default.nix
index 28630e43b766..84c62e556858 100644
--- a/pkgs/development/tools/continuous-integration/buildkite-test-collector-rust/default.nix
+++ b/pkgs/development/tools/continuous-integration/buildkite-test-collector-rust/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
     sha256 = "sha256-PF2TFfzWmHXLgTopzJ04dfnzd3Sc/A6Hduffz2guxmU=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/development/tools/continuous-integration/hci/default.nix b/pkgs/development/tools/continuous-integration/hci/default.nix
index 4f04e0494f0f..6da44a4786cd 100644
--- a/pkgs/development/tools/continuous-integration/hci/default.nix
+++ b/pkgs/development/tools/continuous-integration/hci/default.nix
@@ -2,7 +2,7 @@
 let
   inherit (haskell.lib.compose) overrideCabal addBuildTools justStaticExecutables appendConfigureFlags;
   inherit (lib) makeBinPath;
-  bundledBins = lib.optional stdenv.isLinux crun;
+  bundledBins = lib.optional stdenv.hostPlatform.isLinux crun;
 
   overrides = old: {
     hercules-ci-agent =
diff --git a/pkgs/development/tools/continuous-integration/hercules-ci-agent/default.nix b/pkgs/development/tools/continuous-integration/hercules-ci-agent/default.nix
index 0da85bae969a..a01febb9113d 100644
--- a/pkgs/development/tools/continuous-integration/hercules-ci-agent/default.nix
+++ b/pkgs/development/tools/continuous-integration/hercules-ci-agent/default.nix
@@ -15,7 +15,7 @@
 let
   inherit (haskell.lib.compose) overrideCabal addBuildTools justStaticExecutables;
   inherit (lib) makeBinPath;
-  bundledBins = [ gnutar gzip git openssh ] ++ lib.optional stdenv.isLinux crun;
+  bundledBins = [ gnutar gzip git openssh ] ++ lib.optional stdenv.hostPlatform.isLinux crun;
 
   pkg =
     # justStaticExecutables is needed due to https://github.com/NixOS/nix/issues/2990
@@ -43,7 +43,7 @@ in pkg.overrideAttrs (finalAttrs: o: {
           package = finalAttrs.finalPackage;
           command = "hercules-ci-agent --help";
         };
-      } // lib.optionalAttrs (stdenv.isLinux) {
+      } // lib.optionalAttrs (stdenv.hostPlatform.isLinux) {
         # Does not test the package, but evaluation of the related NixOS module.
         nixos-simple-config = (nixos {
           boot.loader.grub.enable = false;
diff --git a/pkgs/development/tools/cotton/default.nix b/pkgs/development/tools/cotton/default.nix
index ec39c399bdd5..bc54f3154949 100644
--- a/pkgs/development/tools/cotton/default.nix
+++ b/pkgs/development/tools/cotton/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   meta = with lib; {
     description = "Package manager for JavaScript projects";
diff --git a/pkgs/development/tools/database/dynein/default.nix b/pkgs/development/tools/database/dynein/default.nix
index 618ca16417db..167374348459 100644
--- a/pkgs/development/tools/database/dynein/default.nix
+++ b/pkgs/development/tools/database/dynein/default.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   preBuild = ''
     export OPENSSL_DIR=${lib.getDev openssl}
diff --git a/pkgs/development/tools/database/movine/default.nix b/pkgs/development/tools/database/movine/default.nix
index 51a4d8f2943b..41ea6a42a05d 100644
--- a/pkgs/development/tools/database/movine/default.nix
+++ b/pkgs/development/tools/database/movine/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/database/prisma-engines/default.nix b/pkgs/development/tools/database/prisma-engines/default.nix
index 295c791d4f5e..756d5e85ab90 100644
--- a/pkgs/development/tools/database/prisma-engines/default.nix
+++ b/pkgs/development/tools/database/prisma-engines/default.nix
@@ -42,7 +42,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
     protobuf
-  ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   # FIXME: Workaround Rust 1.80 support by updating time to 0.3.36
   # https://github.com/prisma/prisma-engines/issues/4989
diff --git a/pkgs/development/tools/database/prqlc/default.nix b/pkgs/development/tools/database/prqlc/default.nix
index 2eac6f4a2073..008eba559b11 100644
--- a/pkgs/development/tools/database/prqlc/default.nix
+++ b/pkgs/development/tools/database/prqlc/default.nix
@@ -34,7 +34,7 @@ rustPlatform.buildRustPackage rec {
       sqlite
       zlib
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreFoundation
       darwin.apple_sdk.frameworks.CoreServices
       darwin.apple_sdk.frameworks.Security
diff --git a/pkgs/development/tools/database/replibyte/default.nix b/pkgs/development/tools/database/replibyte/default.nix
index 4437e4738e16..f04a00e881ca 100644
--- a/pkgs/development/tools/database/replibyte/default.nix
+++ b/pkgs/development/tools/database/replibyte/default.nix
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
   cargoBuildFlags = [ "--all-features" ];
 
diff --git a/pkgs/development/tools/database/sqlitebrowser/default.nix b/pkgs/development/tools/database/sqlitebrowser/default.nix
index 6b97b1c373d5..c90bfbd3b37d 100644
--- a/pkgs/development/tools/database/sqlitebrowser/default.nix
+++ b/pkgs/development/tools/database/sqlitebrowser/default.nix
@@ -13,13 +13,13 @@ stdenv.mkDerivation (finalAttrs: {
     sha256 = "sha256-2U0jnL2hmrxynMxEiObl10bKFAFlCrY2hulZ/Ggqimw=";
   };
 
-  patches = lib.optional stdenv.isDarwin ./macos.patch;
+  patches = lib.optional stdenv.hostPlatform.isDarwin ./macos.patch;
 
   # We should be using qscintilla from nixpkgs instead of the vendored version,
   # but qscintilla is currently in a bit of a mess as some consumers expect a
   # -qt4 or -qt5 prefix while others do not.
   # We *really* should get that cleaned up.
-  buildInputs = [ qtbase sqlcipher ] ++ lib.optional stdenv.isDarwin qtmacextras;
+  buildInputs = [ qtbase sqlcipher ] ++ lib.optional stdenv.hostPlatform.isDarwin qtmacextras;
 
   nativeBuildInputs = [ cmake qttools wrapQtAppsHook ];
 
diff --git a/pkgs/development/tools/database/surrealdb-migrations/default.nix b/pkgs/development/tools/database/surrealdb-migrations/default.nix
index a8243353adea..2fb443491650 100644
--- a/pkgs/development/tools/database/surrealdb-migrations/default.nix
+++ b/pkgs/development/tools/database/surrealdb-migrations/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-jj1ytX44XoNKR+TCn/MpWk8CFM/DvHSwyfjVe3ca+AA=";
 
   buildInputs = [ ]
-    ++ lib.optionals stdenv.isDarwin [ Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
    # Error: No such file or directory (os error 2)
    # failures:
diff --git a/pkgs/development/tools/delve/default.nix b/pkgs/development/tools/delve/default.nix
index 4552539bb76e..cae7c6145cb0 100644
--- a/pkgs/development/tools/delve/default.nix
+++ b/pkgs/development/tools/delve/default.nix
@@ -29,7 +29,7 @@ buildGoModule rec {
   #   even with __darwinAllowLocalNetworking allowed.
   # - CGO_FLAGS warnings break tests' expected stdout/stderr outputs.
   # - DAP test binaries exit prematurely.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postInstall = ''
     # fortify source breaks build since delve compiles with -O0
diff --git a/pkgs/development/tools/devpod/default.nix b/pkgs/development/tools/devpod/default.nix
index 75c1e27c41f3..057c0d1e9df5 100644
--- a/pkgs/development/tools/devpod/default.nix
+++ b/pkgs/development/tools/devpod/default.nix
@@ -122,7 +122,7 @@ rec {
         cp -r ${frontend-build} frontend-build
 
         substituteInPlace tauri.conf.json --replace '"distDir": "../dist",' '"distDir": "frontend-build",'
-      '' + lib.optionalString stdenv.isLinux ''
+      '' + lib.optionalString stdenv.hostPlatform.isLinux ''
         substituteInPlace $cargoDepsCopy/libappindicator-sys-*/src/lib.rs \
           --replace "libayatana-appindicator3.so.1" "${libayatana-appindicator}/lib/libayatana-appindicator3.so.1"
 
@@ -134,20 +134,20 @@ rec {
       nativeBuildInputs = [
         copyDesktopItems
         pkg-config
-      ] ++ lib.optionals stdenv.isLinux [
+      ] ++ lib.optionals stdenv.hostPlatform.isLinux [
         jq
-      ] ++ lib.optionals stdenv.isDarwin [
+      ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
         desktopToDarwinBundle
       ];
 
       buildInputs = [
         libsoup
         openssl
-      ] ++ lib.optionals stdenv.isLinux [
+      ] ++ lib.optionals stdenv.hostPlatform.isLinux [
         gtk3
         libayatana-appindicator
         webkitgtk
-      ] ++ lib.optionals stdenv.isDarwin [
+      ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
         darwin.apple_sdk.frameworks.Carbon
         darwin.apple_sdk.frameworks.Cocoa
         darwin.apple_sdk.frameworks.WebKit
diff --git a/pkgs/development/tools/dive/default.nix b/pkgs/development/tools/dive/default.nix
index a29e3a23a26b..06cb34499a72 100644
--- a/pkgs/development/tools/dive/default.nix
+++ b/pkgs/development/tools/dive/default.nix
@@ -24,7 +24,7 @@ buildGoModule rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ btrfs-progs gpgme lvm2 ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ btrfs-progs gpgme lvm2 ];
 
   patches = [
     # fix scrolling
diff --git a/pkgs/development/tools/documentation/doxygen/default.nix b/pkgs/development/tools/documentation/doxygen/default.nix
index 35fcdc709521..455f18ba0a3d 100644
--- a/pkgs/development/tools/documentation/doxygen/default.nix
+++ b/pkgs/development/tools/documentation/doxygen/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ libiconv spdlog sqlite ]
     ++ lib.optionals (qt5 != null) (with qt5; [ qtbase wrapQtAppsHook ])
-    ++ lib.optionals stdenv.isDarwin [ CoreServices ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   cmakeFlags = [
     "-DICONV_INCLUDE_DIR=${libiconv}/include"
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optional (qt5 != null) "-Dbuild_wizard=YES";
 
   env.NIX_CFLAGS_COMPILE =
-    lib.optionalString stdenv.isDarwin "-mmacosx-version-min=10.9";
+    lib.optionalString stdenv.hostPlatform.isDarwin "-mmacosx-version-min=10.9";
 
   # put examples in an output so people/tools can test against them
   outputs = [ "out" "examples" ];
diff --git a/pkgs/development/tools/dprint/default.nix b/pkgs/development/tools/dprint/default.nix
index fbd8ea370866..d6b1266ab393 100644
--- a/pkgs/development/tools/dprint/default.nix
+++ b/pkgs/development/tools/dprint/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-86ecnwDDVvgXgBBodP2rSZOn+R52Jap8RCKILttGOn8=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreFoundation Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreFoundation Security ];
 
   # Tests fail because they expect a test WASM plugin. Tests already run for
   # every commit upstream on GitHub Actions
diff --git a/pkgs/development/tools/dump_syms/default.nix b/pkgs/development/tools/dump_syms/default.nix
index 61d323d83274..7f723096a8a7 100644
--- a/pkgs/development/tools/dump_syms/default.nix
+++ b/pkgs/development/tools/dump_syms/default.nix
@@ -37,7 +37,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals (stdenv.isDarwin) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
     Security
     SystemConfiguration
   ];
diff --git a/pkgs/development/tools/earthly/default.nix b/pkgs/development/tools/earthly/default.nix
index 576c3edd405c..e36971390d4f 100644
--- a/pkgs/development/tools/earthly/default.nix
+++ b/pkgs/development/tools/earthly/default.nix
@@ -23,7 +23,7 @@ buildGoModule rec {
     "-X main.DefaultBuildkitdImage=docker.io/earthly/buildkitd:v${version}"
     "-X main.GitSha=v${version}"
     "-X main.DefaultInstallationName=earthly"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-extldflags '-static'"
   ];
 
diff --git a/pkgs/development/tools/electron/binary/generic.nix b/pkgs/development/tools/electron/binary/generic.nix
index 60255d21bcb1..39f1d1011b33 100644
--- a/pkgs/development/tools/electron/binary/generic.nix
+++ b/pkgs/development/tools/electron/binary/generic.nix
@@ -166,5 +166,5 @@ in
   stdenv.mkDerivation (finalAttrs:
     lib.recursiveUpdate
       (common stdenv.hostPlatform)
-      ((if stdenv.isDarwin then darwin else linux) finalAttrs)
+      ((if stdenv.hostPlatform.isDarwin then darwin else linux) finalAttrs)
   )
diff --git a/pkgs/development/tools/electron/chromedriver/generic.nix b/pkgs/development/tools/electron/chromedriver/generic.nix
index edd648713e27..1eb1a8d870b8 100644
--- a/pkgs/development/tools/electron/chromedriver/generic.nix
+++ b/pkgs/development/tools/electron/chromedriver/generic.nix
@@ -92,5 +92,5 @@ let
 in
   stdenv.mkDerivation (
     (common stdenv.hostPlatform) //
-    (if stdenv.isDarwin then darwin else linux)
+    (if stdenv.hostPlatform.isDarwin then darwin else linux)
   )
diff --git a/pkgs/development/tools/espup/default.nix b/pkgs/development/tools/espup/default.nix
index ca650be0e386..336bdcdf5229 100644
--- a/pkgs/development/tools/espup/default.nix
+++ b/pkgs/development/tools/espup/default.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
     openssl
     xz
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/development/tools/explain/default.nix b/pkgs/development/tools/explain/default.nix
index 66334b12d996..fb25deacb46c 100644
--- a/pkgs/development/tools/explain/default.nix
+++ b/pkgs/development/tools/explain/default.nix
@@ -44,6 +44,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ McSinyx ];
     platforms = platforms.unix;
     # never built on aarch64-linux since first introduction in nixpkgs
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/tools/fermyon-spin/default.nix b/pkgs/development/tools/fermyon-spin/default.nix
index 17c525d801a5..aa6b1247b117 100644
--- a/pkgs/development/tools/fermyon-spin/default.nix
+++ b/pkgs/development/tools/fermyon-spin/default.nix
@@ -39,7 +39,7 @@ in stdenv.mkDerivation rec {
 
   sourceRoot = ".";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     autoPatchelfHook
   ];
 
diff --git a/pkgs/development/tools/firebase-tools/default.nix b/pkgs/development/tools/firebase-tools/default.nix
index 8222c1df9ea4..ccfb5f6e895f 100644
--- a/pkgs/development/tools/firebase-tools/default.nix
+++ b/pkgs/development/tools/firebase-tools/default.nix
@@ -25,7 +25,7 @@ buildNpmPackage rec {
 
   nativeBuildInputs = [
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     xcbuild
   ];
 
diff --git a/pkgs/development/tools/fnm/default.nix b/pkgs/development/tools/fnm/default.nix
index 9aafdb4e02c1..145da019b6f6 100644
--- a/pkgs/development/tools/fnm/default.nix
+++ b/pkgs/development/tools/fnm/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ DiskArbitration Foundation Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ DiskArbitration Foundation Security ];
 
   cargoHash = "sha256-b15m5DjTDNWJBHOaKSEMwkO/o+0mV+JMBDBurml7xOs=";
 
diff --git a/pkgs/development/tools/functiontrace-server/default.nix b/pkgs/development/tools/functiontrace-server/default.nix
index abacb1d9f9d4..efb5026e069e 100644
--- a/pkgs/development/tools/functiontrace-server/default.nix
+++ b/pkgs/development/tools/functiontrace-server/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-3tLjW7yiS1dNsV81KUZbfN2pvYT9kqiC62nWFid2NH8=";
 
-  buildInputs = lib.optionals stdenv.isDarwin
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin
     [ darwin.apple_sdk.frameworks.CoreFoundation ];
 
   meta = with lib; {
diff --git a/pkgs/development/tools/garble/default.nix b/pkgs/development/tools/garble/default.nix
index 438d83405988..0735e283d6db 100644
--- a/pkgs/development/tools/garble/default.nix
+++ b/pkgs/development/tools/garble/default.nix
@@ -20,7 +20,7 @@ buildGoModule rec {
   # Used for some of the tests.
   nativeCheckInputs = [git];
 
-  preBuild = lib.optionalString (!stdenv.isx86_64) ''
+  preBuild = lib.optionalString (!stdenv.hostPlatform.isx86_64) ''
     # The test assumex amd64 assembly
     rm testdata/script/asm.txtar
   '';
@@ -30,6 +30,6 @@ buildGoModule rec {
     homepage = "https://github.com/burrowers/garble/";
     maintainers = with lib.maintainers; [ davhau ];
     license = lib.licenses.bsd3;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/garble.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/garble.x86_64-darwin
   };
 }
diff --git a/pkgs/development/tools/geckodriver/default.nix b/pkgs/development/tools/geckodriver/default.nix
index f62ab97c1bee..7af8747ef8c4 100644
--- a/pkgs/development/tools/geckodriver/default.nix
+++ b/pkgs/development/tools/geckodriver/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-gopI5iOCSzD23mvOues76WIiBtpNf9A6X9NoOULm6Qo=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security ];
 
   meta = with lib; {
     description = "Proxy for using W3C WebDriver-compatible clients to interact with Gecko-based browsers";
diff --git a/pkgs/development/tools/git-ps-rs/default.nix b/pkgs/development/tools/git-ps-rs/default.nix
index 667cafdf67a5..089c03268931 100644
--- a/pkgs/development/tools/git-ps-rs/default.nix
+++ b/pkgs/development/tools/git-ps-rs/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl dbus ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl dbus ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "Tool for working with a stack of patches";
diff --git a/pkgs/development/tools/github-copilot-intellij-agent/default.nix b/pkgs/development/tools/github-copilot-intellij-agent/default.nix
index c919e2de6281..13c28ca5b71a 100644
--- a/pkgs/development/tools/github-copilot-intellij-agent/default.nix
+++ b/pkgs/development/tools/github-copilot-intellij-agent/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
     mkdir -p $out/bin
     unzip -p $src github-copilot-intellij/copilot-agent/bin/copilot-agent-${
-      if stdenv.isDarwin then (if stdenv.isAarch64 then "macos-arm64" else "macos") else "linux"
+      if stdenv.hostPlatform.isDarwin then (if stdenv.hostPlatform.isAarch64 then "macos-arm64" else "macos") else "linux"
     } | install -m755 /dev/stdin $out/bin/copilot-agent
 
     runHook postInstall
diff --git a/pkgs/development/tools/glade/default.nix b/pkgs/development/tools/glade/default.nix
index da706dcdb30a..2658cbe241fe 100644
--- a/pkgs/development/tools/glade/default.nix
+++ b/pkgs/development/tools/glade/default.nix
@@ -9,7 +9,7 @@
 , gtk3
 , glib
 , gjs
-, enableWebkit2gtk ? stdenv.isLinux
+, enableWebkit2gtk ? stdenv.hostPlatform.isLinux
 , webkitgtk_4_1
 , gobject-introspection
 , wrapGAppsHook3
diff --git a/pkgs/development/tools/gllvm/default.nix b/pkgs/development/tools/gllvm/default.nix
index b1350fba7c4e..26b820f26425 100644
--- a/pkgs/development/tools/gllvm/default.nix
+++ b/pkgs/development/tools/gllvm/default.nix
@@ -16,7 +16,7 @@ buildGoModule {
   nativeCheckInputs = with llvmPackages; [
     clang
     llvm
-  ] ++ lib.optionals stdenv.isDarwin [ getconf ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ getconf ];
 
   meta = with lib; {
     homepage = "https://github.com/SRI-CSL/gllvm";
diff --git a/pkgs/development/tools/glslviewer/default.nix b/pkgs/development/tools/glslviewer/default.nix
index 809a674a36a9..0d950d24bf60 100644
--- a/pkgs/development/tools/glslviewer/default.nix
+++ b/pkgs/development/tools/glslviewer/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
       ncurses
       ffmpeg
     ]
-    ++ lib.optional stdenv.isDarwin Cocoa;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 
   meta = with lib; {
     description = "Live GLSL coding renderer";
@@ -49,6 +49,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     mainProgram = "glslViewer";
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/tools/gptcommit/default.nix b/pkgs/development/tools/gptcommit/default.nix
index f1bd3376e160..2c97533a2696 100644
--- a/pkgs/development/tools/gptcommit/default.nix
+++ b/pkgs/development/tools/gptcommit/default.nix
@@ -30,8 +30,8 @@ rustPlatform.buildRustPackage {
   # 0.5.6 release has failing tests
   doCheck = false;
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security SystemConfiguration ]
-    ++ lib.optionals stdenv.isLinux [ openssl ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ openssl ];
 
   passthru = {
     updateScript = nix-update-script { };
diff --git a/pkgs/development/tools/graphql-client/default.nix b/pkgs/development/tools/graphql-client/default.nix
index 241e1ef95faa..8fe6ff5bcf08 100644
--- a/pkgs/development/tools/graphql-client/default.nix
+++ b/pkgs/development/tools/graphql-client/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
   ];
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "GraphQL tool for Rust projects";
diff --git a/pkgs/development/tools/hobbes/default.nix b/pkgs/development/tools/hobbes/default.nix
index d4a76bf29183..f6d8c0fb8624 100644
--- a/pkgs/development/tools/hobbes/default.nix
+++ b/pkgs/development/tools/hobbes/default.nix
@@ -58,7 +58,7 @@ llvmPackages.stdenv.mkDerivation {
   checkTarget = "test";
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Language and an embedded JIT compiler";
     longDescription = ''
       Hobbes is a a language, embedded compiler, and runtime for efficient
diff --git a/pkgs/development/tools/hors/default.nix b/pkgs/development/tools/hors/default.nix
index 4ecea68c18ec..03f53f1eabaf 100644
--- a/pkgs/development/tools/hors/default.nix
+++ b/pkgs/development/tools/hors/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-1PB/JvgfC6qABI+cIePqtsSlZXPqMGQIay9SCXJkV9o=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # requires network access
   doCheck = false;
diff --git a/pkgs/development/tools/hotdoc/default.nix b/pkgs/development/tools/hotdoc/default.nix
index 11d9cf11b152..8dcee1b730dd 100644
--- a/pkgs/development/tools/hotdoc/default.nix
+++ b/pkgs/development/tools/hotdoc/default.nix
@@ -91,7 +91,7 @@ buildPythonApplication rec {
   disabledTests = [
     # Test does not correctly handle path normalization for test comparison
     "test_cli_overrides"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # Test does not correctly handle absolute /home paths on Darwin (even fake ones)
     "test_index"
   ];
diff --git a/pkgs/development/tools/htmlq/default.nix b/pkgs/development/tools/htmlq/default.nix
index 7e55740d03ba..e9767ca60029 100644
--- a/pkgs/development/tools/htmlq/default.nix
+++ b/pkgs/development/tools/htmlq/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-r9EnQQPGpPIcNYb1eqGrMnRdh0snIa5iVsTYTI+YErY=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   doCheck = false;
 
diff --git a/pkgs/development/tools/jaq/default.nix b/pkgs/development/tools/jaq/default.nix
index 8304303d301f..4bd2f8cb1a3f 100644
--- a/pkgs/development/tools/jaq/default.nix
+++ b/pkgs/development/tools/jaq/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-7MK0iLBpjvWE7UH5Tb3qIm2XnEVsAvBy34Ed4wHagZQ=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/java/java-language-server/default.nix b/pkgs/development/tools/java/java-language-server/default.nix
index 723937f8f535..fa6bcbf10f5b 100644
--- a/pkgs/development/tools/java/java-language-server/default.nix
+++ b/pkgs/development/tools/java/java-language-server/default.nix
@@ -5,9 +5,9 @@
 
 let
   platform =
-    if stdenv.isLinux then "linux"
-    else if stdenv.isDarwin then "mac"
-    else if stdenv.isWindows then "windows"
+    if stdenv.hostPlatform.isLinux then "linux"
+    else if stdenv.hostPlatform.isDarwin then "mac"
+    else if stdenv.hostPlatform.isWindows then "windows"
     else throw "unsupported platform";
 in
 maven.buildMavenPackage rec {
@@ -31,7 +31,7 @@ maven.buildMavenPackage rec {
   dontConfigure = true;
   preBuild = ''
     jlink \
-      ${lib.optionalString (!stdenv.isDarwin) "--module-path './jdks/${platform}/jdk-13/jmods'"} \
+      ${lib.optionalString (!stdenv.hostPlatform.isDarwin) "--module-path './jdks/${platform}/jdk-13/jmods'"} \
       --add-modules java.base,java.compiler,java.logging,java.sql,java.xml,jdk.compiler,jdk.jdi,jdk.unsupported,jdk.zipfs \
       --output dist/${platform} \
       --no-header-files \
diff --git a/pkgs/development/tools/java/jprofiler/default.nix b/pkgs/development/tools/java/jprofiler/default.nix
index 7f74d8665a80..400c339475fe 100644
--- a/pkgs/development/tools/java/jprofiler/default.nix
+++ b/pkgs/development/tools/java/jprofiler/default.nix
@@ -26,7 +26,7 @@ let
     maintainers = with maintainers; [ catap ];
   };
 
-  src = if stdenv.isLinux then fetchurl {
+  src = if stdenv.hostPlatform.isLinux then fetchurl {
     url = "https://download-gcdn.ej-technologies.com/jprofiler/jprofiler_linux_${lib.replaceStrings ["."] ["_"]  version}.tar.gz";
     hash = "sha256-orjBSaC7NvKcak+RSEa9V05oL3EZIBnp7TyaX/8XFyg=";
   } else fetchurl {
@@ -99,4 +99,4 @@ let
     meta = meta // { platforms = lib.platforms.darwin; };
   };
 in
-if stdenv.isDarwin then darwin else linux
+if stdenv.hostPlatform.isDarwin then darwin else linux
diff --git a/pkgs/development/tools/jless/default.nix b/pkgs/development/tools/jless/default.nix
index e704ec994eed..0aba5e3f23f1 100644
--- a/pkgs/development/tools/jless/default.nix
+++ b/pkgs/development/tools/jless/default.nix
@@ -13,11 +13,11 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-sas94liAOSIirIJGdexdApXic2gWIBDT4uJFRM3qMw0=";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ python3 ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ python3 ];
 
   buildInputs = [ ]
-    ++ lib.optionals stdenv.isDarwin [ AppKit ]
-    ++ lib.optionals stdenv.isLinux [ libxcb ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libxcb ];
 
   meta = with lib; {
     description = "Command-line pager for JSON data";
diff --git a/pkgs/development/tools/jq/default.nix b/pkgs/development/tools/jq/default.nix
index 8d4ec0d1c5a6..1443ca78371a 100644
--- a/pkgs/development/tools/jq/default.nix
+++ b/pkgs/development/tools/jq/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   outputs = [ "bin" "doc" "man" "dev" "lib" "out" ];
 
   # https://github.com/jqlang/jq/issues/2871
-  postPatch = lib.optionalString stdenv.isFreeBSD ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isFreeBSD ''
     substituteInPlace Makefile.am --replace-fail "tests/mantest" "" --replace-fail "tests/optionaltest" ""
   '';
 
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
   # Otherwise, configure will detect that they’re in libm, but the build will fail
   # with clang 16+ due to calls to undeclared functions.
   # This is fixed upstream and can be removed once jq is updated (to 1.7 or an unstable release).
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin (toString [
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin (toString [
     "-D_REENTRANT=1"
     "-D_DARWIN_C_SOURCE=1"
   ]);
@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
     "--mandir=\${man}/share/man"
   ] ++ lib.optional (!onigurumaSupport) "--with-oniguruma=no"
   # jq is linked to libjq:
-  ++ lib.optional (!stdenv.isDarwin) "LDFLAGS=-Wl,-rpath,\\\${libdir}";
+  ++ lib.optional (!stdenv.hostPlatform.isDarwin) "LDFLAGS=-Wl,-rpath,\\\${libdir}";
 
   # Break the dependency cycle: $dev refers to $bin via propagated-build-outputs, and
   # $bin refers to $dev because of https://github.com/jqlang/jq/commit/583e4a27188a2db097dd043dd203b9c106bba100
diff --git a/pkgs/development/tools/kafka-delta-ingest/default.nix b/pkgs/development/tools/kafka-delta-ingest/default.nix
index 8dd3cf1299cb..a5fea071b48e 100644
--- a/pkgs/development/tools/kafka-delta-ingest/default.nix
+++ b/pkgs/development/tools/kafka-delta-ingest/default.nix
@@ -42,7 +42,7 @@ rustPlatform.buildRustPackage rec {
   doCheck = false;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Highly efficient daemon for streaming data from Kafka into Delta Lake";
     mainProgram = "kafka-delta-ingest";
     homepage = "https://github.com/delta-io/kafka-delta-ingest";
diff --git a/pkgs/development/tools/kdash/default.nix b/pkgs/development/tools/kdash/default.nix
index 13edb7bd1fed..aceddd467b02 100644
--- a/pkgs/development/tools/kdash/default.nix
+++ b/pkgs/development/tools/kdash/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ perl python3 pkg-config ];
 
   buildInputs = [ openssl xorg.xcbutil ]
-    ++ lib.optional stdenv.isDarwin AppKit;
+    ++ lib.optional stdenv.hostPlatform.isDarwin AppKit;
 
   cargoHash = "sha256-jm0UCKDy6TrogMPavB86lvk8yKZXubTGGbApk+oP2RQ=";
 
diff --git a/pkgs/development/tools/kubie/default.nix b/pkgs/development/tools/kubie/default.nix
index 42f19d97e4ff..18b429e2d434 100644
--- a/pkgs/development/tools/kubie/default.nix
+++ b/pkgs/development/tools/kubie/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   postInstall = ''
     installShellCompletion completion/kubie.bash
diff --git a/pkgs/development/tools/language-servers/lua-language-server/default.nix b/pkgs/development/tools/language-servers/lua-language-server/default.nix
index 0bbab7942e8a..d187558a1c10 100644
--- a/pkgs/development/tools/language-servers/lua-language-server/default.nix
+++ b/pkgs/development/tools/language-servers/lua-language-server/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation (finalAttrs: {
     makeWrapper
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
     Foundation
     ditto
@@ -41,7 +41,7 @@ stdenv.mkDerivation (finalAttrs: {
 
       pushd 3rd/luamake
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # This package uses the program clang for C and C++ files. The language
       # is selected via the command line argument -std, but this do not work
       # in combination with the nixpkgs clang wrapper. Therefor we have to
@@ -55,7 +55,7 @@ stdenv.mkDerivation (finalAttrs: {
         -e '/cxx_/s,$cc,clang++,'
     '';
 
-  ninjaFlags = [ "-fcompile/ninja/${if stdenv.isDarwin then "macos" else "linux"}.ninja" ];
+  ninjaFlags = [ "-fcompile/ninja/${if stdenv.hostPlatform.isDarwin then "macos" else "linux"}.ninja" ];
 
   postBuild = ''
     popd
diff --git a/pkgs/development/tools/language-servers/rune-languageserver/default.nix b/pkgs/development/tools/language-servers/rune-languageserver/default.nix
index df2d91fa7e84..41977f89e909 100644
--- a/pkgs/development/tools/language-servers/rune-languageserver/default.nix
+++ b/pkgs/development/tools/language-servers/rune-languageserver/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-GlzT7lN9iCNiPFIjhL/UfqohgtOwDaIeTVEWOyaeicM=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/language-servers/vala-language-server/default.nix b/pkgs/development/tools/language-servers/vala-language-server/default.nix
index 0a8b3ef124a5..9faf60024c5d 100644
--- a/pkgs/development/tools/language-servers/vala-language-server/default.nix
+++ b/pkgs/development/tools/language-servers/vala-language-server/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
     ninja
     pkg-config
     scdoc
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     # GNOME Builder Plugin
     gnome-builder
   ];
diff --git a/pkgs/development/tools/language-servers/vscode-langservers-extracted/default.nix b/pkgs/development/tools/language-servers/vscode-langservers-extracted/default.nix
index 4b7f571ead57..03dec7c8c2fb 100644
--- a/pkgs/development/tools/language-servers/vscode-langservers-extracted/default.nix
+++ b/pkgs/development/tools/language-servers/vscode-langservers-extracted/default.nix
@@ -23,7 +23,7 @@ buildNpmPackage rec {
   buildPhase =
     let
       extensions =
-        if stdenv.isDarwin
+        if stdenv.hostPlatform.isDarwin
         then "../VSCodium.app/Contents/Resources/app/extensions"
         else "../resources/app/extensions";
     in
diff --git a/pkgs/development/tools/ldid/default.nix b/pkgs/development/tools/ldid/default.nix
index 38b252781c7e..c3a988885cec 100644
--- a/pkgs/development/tools/ldid/default.nix
+++ b/pkgs/development/tools/ldid/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
     libplist
     libxml2
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
     Security
   ];
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     "-lcrypto"
     "-lplist-2.0"
     "-lxml2"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-framework CoreFoundation"
     "-framework Security"
   ];
diff --git a/pkgs/development/tools/libsigrok/default.nix b/pkgs/development/tools/libsigrok/default.nix
index ca9aee9c4592..c93c27722ec2 100644
--- a/pkgs/development/tools/libsigrok/default.nix
+++ b/pkgs/development/tools/libsigrok/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook doxygen pkg-config python ];
   buildInputs = [
     libzip glib libusb1 libftdi1 check libserialport glibmm hidapi
-  ] ++ lib.optionals stdenv.isLinux [ libieee1284 bluez ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ libieee1284 bluez ];
 
   strictDeps = true;
 
diff --git a/pkgs/development/tools/mars-mips/default.nix b/pkgs/development/tools/mars-mips/default.nix
index 66b9684175c3..d5489e7e2537 100644
--- a/pkgs/development/tools/mars-mips/default.nix
+++ b/pkgs/development/tools/mars-mips/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation (finalAttrs: {
     copyDesktopItems
     unzip
     imagemagick
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     desktopToDarwinBundle
   ];
 
diff --git a/pkgs/development/tools/minizinc/ide.nix b/pkgs/development/tools/minizinc/ide.nix
index 45fd8da44b5e..46025c0f9bb0 100644
--- a/pkgs/development/tools/minizinc/ide.nix
+++ b/pkgs/development/tools/minizinc/ide.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchFromGitHub, qtbase, qmake, qtwebsockets, minizinc, makeWrapper, Cocoa }:
 
 let
-  executableLoc = if stdenv.isDarwin then "$out/Applications/MiniZincIDE.app/Contents/MacOS/MiniZincIDE" else "$out/bin/MiniZincIDE";
+  executableLoc = if stdenv.hostPlatform.isDarwin then "$out/Applications/MiniZincIDE.app/Contents/MacOS/MiniZincIDE" else "$out/bin/MiniZincIDE";
 in
 stdenv.mkDerivation rec {
   pname = "minizinc-ide";
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ qmake makeWrapper ];
-  buildInputs = [ qtbase qtwebsockets ] ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+  buildInputs = [ qtbase qtwebsockets ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   sourceRoot = "${src.name}/MiniZincIDE";
 
diff --git a/pkgs/development/tools/misc/autoconf/2.64.nix b/pkgs/development/tools/misc/autoconf/2.64.nix
index daf026dc3a5b..c505cc694805 100644
--- a/pkgs/development/tools/misc/autoconf/2.64.nix
+++ b/pkgs/development/tools/misc/autoconf/2.64.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   # http://thread.gmane.org/gmane.comp.sysutils.autoconf.bugs/6822 for
   # details.
   # There are many test failures on `i386-pc-solaris2.11'.
-  #doCheck = ((!stdenv.isCygwin) && (!stdenv.isSunOS));
+  #doCheck = ((!stdenv.hostPlatform.isCygwin) && (!stdenv.hostPlatform.isSunOS));
   doCheck = false;
 
   # Don't fixup "#! /bin/sh" in Autoconf, otherwise it will use the
diff --git a/pkgs/development/tools/misc/autoconf/2.69.nix b/pkgs/development/tools/misc/autoconf/2.69.nix
index 870b0ae1d34a..bdd534055a5a 100644
--- a/pkgs/development/tools/misc/autoconf/2.69.nix
+++ b/pkgs/development/tools/misc/autoconf/2.69.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   # http://thread.gmane.org/gmane.comp.sysutils.autoconf.bugs/6822 for
   # details.
   # There are many test failures on `i386-pc-solaris2.11'.
-  #doCheck = ((!stdenv.isCygwin) && (!stdenv.isSunOS));
+  #doCheck = ((!stdenv.hostPlatform.isCygwin) && (!stdenv.hostPlatform.isSunOS));
   doCheck = false;
 
   # Don't fixup "#! /bin/sh" in Autoconf, otherwise it will use the
diff --git a/pkgs/development/tools/misc/autoconf/2.71.nix b/pkgs/development/tools/misc/autoconf/2.71.nix
index 1fcb819bd4b7..bfc24892ecd9 100644
--- a/pkgs/development/tools/misc/autoconf/2.71.nix
+++ b/pkgs/development/tools/misc/autoconf/2.71.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   # http://thread.gmane.org/gmane.comp.sysutils.autoconf.bugs/6822 for
   # details.
   # There are many test failures on `i386-pc-solaris2.11'.
-  doCheck = ((!stdenv.isCygwin) && (!stdenv.isSunOS));
+  doCheck = ((!stdenv.hostPlatform.isCygwin) && (!stdenv.hostPlatform.isSunOS));
 
   # Don't fixup "#! /bin/sh" in Autoconf, otherwise it will use the
   # "fixed" path in generated files!
diff --git a/pkgs/development/tools/misc/autoconf/default.nix b/pkgs/development/tools/misc/autoconf/default.nix
index 8039e36a4f20..9f4ee80d1a76 100644
--- a/pkgs/development/tools/misc/autoconf/default.nix
+++ b/pkgs/development/tools/misc/autoconf/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   # http://thread.gmane.org/gmane.comp.sysutils.autoconf.bugs/6822 for
   # details.
   # There are many test failures on `i386-pc-solaris2.11'.
-  doCheck = ((!stdenv.isCygwin) && (!stdenv.isSunOS));
+  doCheck = ((!stdenv.hostPlatform.isCygwin) && (!stdenv.hostPlatform.isSunOS));
 
   # Don't fixup "#! /bin/sh" in Autoconf, otherwise it will use the
   # "fixed" path in generated files!
diff --git a/pkgs/development/tools/misc/autogen/default.nix b/pkgs/development/tools/misc/autogen/default.nix
index 3cb6760842f5..e43571666719 100644
--- a/pkgs/development/tools/misc/autogen/default.nix
+++ b/pkgs/development/tools/misc/autogen/default.nix
@@ -92,7 +92,7 @@ stdenv.mkDerivation rec {
     #"MAKEINFO=${buildPackages.texinfo}/bin/makeinfo"
   ]
   # See: https://sourceforge.net/p/autogen/bugs/187/
-  ++ lib.optionals stdenv.isDarwin [ "ac_cv_func_utimensat=no" ];
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ "ac_cv_func_utimensat=no" ];
 
   #doCheck = true; # not reliable
 
diff --git a/pkgs/development/tools/misc/binutils/2.38/libbfd.nix b/pkgs/development/tools/misc/binutils/2.38/libbfd.nix
index 08cf35970a6c..313b610560da 100644
--- a/pkgs/development/tools/misc/binutils/2.38/libbfd.nix
+++ b/pkgs/development/tools/misc/binutils/2.38/libbfd.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation {
 
   strictDeps = true;
   nativeBuildInputs = [ autoreconfHook bison ];
-  buildInputs = [ libiberty zlib ] ++ lib.optionals stdenv.isDarwin [ libintl ];
+  buildInputs = [ libiberty zlib ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libintl ];
 
   configurePlatforms = [ "build" "host" ];
   configureFlags = [
diff --git a/pkgs/development/tools/misc/blackfire/default.nix b/pkgs/development/tools/misc/blackfire/default.nix
index 2640c67a53f4..e3114ea8bd3d 100644
--- a/pkgs/development/tools/misc/blackfire/default.nix
+++ b/pkgs/development/tools/misc/blackfire/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
 
   src = passthru.sources.${stdenv.hostPlatform.system} or (throw "Unsupported platform for blackfire: ${stdenv.hostPlatform.system}");
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     dpkg
   ];
 
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   installPhase = ''
     runHook preInstall
 
-    if ${ lib.boolToString stdenv.isLinux }
+    if ${ lib.boolToString stdenv.hostPlatform.isLinux }
     then
       dpkg-deb -x $src $out
       mv $out/usr/* $out
diff --git a/pkgs/development/tools/misc/blackfire/php-probe.nix b/pkgs/development/tools/misc/blackfire/php-probe.nix
index 4a292f6079bc..c5b5aae3b96e 100644
--- a/pkgs/development/tools/misc/blackfire/php-probe.nix
+++ b/pkgs/development/tools/misc/blackfire/php-probe.nix
@@ -81,7 +81,7 @@ stdenv.mkDerivation (finalAttrs: {
     inherit system phpMajor;
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     autoPatchelfHook
   ];
 
diff --git a/pkgs/development/tools/misc/creduce/default.nix b/pkgs/development/tools/misc/creduce/default.nix
index 7adc78013f47..a8b6acb1e3f9 100644
--- a/pkgs/development/tools/misc/creduce/default.nix
+++ b/pkgs/development/tools/misc/creduce/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
   # On Linux, c-reduce's preferred way to reason about
   # the cpu architecture/topology is to use 'lscpu',
   # so let's make sure it knows where to find it:
-  + lib.optionalString stdenv.isLinux ''
+  + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace creduce/creduce_utils.pm --replace \
       lscpu ${util-linux}/bin/lscpu
   '';
diff --git a/pkgs/development/tools/misc/ddd/default.nix b/pkgs/development/tools/misc/ddd/default.nix
index 0321b24de321..71a64d4b90ce 100644
--- a/pkgs/development/tools/misc/ddd/default.nix
+++ b/pkgs/development/tools/misc/ddd/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation (finalAttrs: {
       --replace-fail 'debuggerCommand:' 'debuggerCommand: ${gdb}/bin/gdb'
   '';
 
-  nativeBuildInputs = [ imagemagick ] ++ lib.optionals stdenv.isDarwin [ desktopToDarwinBundle ];
+  nativeBuildInputs = [ imagemagick ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ desktopToDarwinBundle ];
 
   buildInputs = [
     motif
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # ioctl is not found without this flag. fixed in next release
   # Upstream issue ref: https://savannah.gnu.org/bugs/index.php?64188
-  env = lib.optionalAttrs stdenv.isDarwin { NIX_CFLAGS_COMPILE = "-DHAVE_SYS_IOCTL_H"; };
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin { NIX_CFLAGS_COMPILE = "-DHAVE_SYS_IOCTL_H"; };
 
   configureFlags = [
     "--enable-builtin-manual"
diff --git a/pkgs/development/tools/misc/dura/default.nix b/pkgs/development/tools/misc/dura/default.nix
index 34b5127e118e..34b966607a74 100644
--- a/pkgs/development/tools/misc/dura/default.nix
+++ b/pkgs/development/tools/misc/dura/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/development/tools/misc/ezno/default.nix b/pkgs/development/tools/misc/ezno/default.nix
index 559622bf7da2..af035e7565ec 100644
--- a/pkgs/development/tools/misc/ezno/default.nix
+++ b/pkgs/development/tools/misc/ezno/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-noMfKx6BsmWhAVI4r8LlC961Uwogv1JGMYSrNGlLGPQ=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/development/tools/misc/fswatch/default.nix b/pkgs/development/tools/misc/fswatch/default.nix
index afeac90c58c0..05fbd759ffca 100644
--- a/pkgs/development/tools/misc/fswatch/default.nix
+++ b/pkgs/development/tools/misc/fswatch/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-gVYDvda+6ZJkShJXUxUEVxq4enkRrhdvlTTxYWq4Aho=";
   };
 
-  nativeBuildInputs = [ autoreconfHook makeWrapper ] ++ lib.optionals stdenv.isDarwin [ CoreServices ];
+  nativeBuildInputs = [ autoreconfHook makeWrapper ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
   buildInputs = [ gettext libtool texinfo ];
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/tools/misc/funzzy/default.nix b/pkgs/development/tools/misc/funzzy/default.nix
index c05def18404b..c1f4b642a86f 100644
--- a/pkgs/development/tools/misc/funzzy/default.nix
+++ b/pkgs/development/tools/misc/funzzy/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-eq5d6oHWKip9K+9yszLXW+JHtzYzrThXfqoZGMhnSHk=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/development/tools/misc/gdb/default.nix b/pkgs/development/tools/misc/gdb/default.nix
index 5cf686dcfb6b..ac1bd1627d1c 100644
--- a/pkgs/development/tools/misc/gdb/default.nix
+++ b/pkgs/development/tools/misc/gdb/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-OCVOrNRXITS8qcWlqk1MpWTLvTDDadiB9zP7a5AzVPI=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace gdb/darwin-nat.c \
       --replace '#include "bfd/mach-o.h"' '#include "mach-o.h"'
   '' + lib.optionalString stdenv.hostPlatform.isMusl ''
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
 
   patches = [
     ./debug-info-from-env.patch
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     ./darwin-target-match.patch
   ];
 
@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional pythonSupport python3
     ++ lib.optional doCheck dejagnu
     ++ lib.optional enableDebuginfod (elfutils.override { enableDebuginfod = true; })
-    ++ lib.optional stdenv.isDarwin libiconv;
+    ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   propagatedNativeBuildInputs = [ setupDebugInfoDirs ];
 
@@ -68,7 +68,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   # darwin build fails with format hardening since v7.12
-  hardeningDisable = lib.optionals stdenv.isDarwin [ "format" ];
+  hardeningDisable = lib.optionals stdenv.hostPlatform.isDarwin [ "format" ];
 
   env.NIX_CFLAGS_COMPILE = "-Wno-format-nonliteral";
 
diff --git a/pkgs/development/tools/misc/hydra-cli/default.nix b/pkgs/development/tools/misc/hydra-cli/default.nix
index 527362114851..42ec5704bae7 100644
--- a/pkgs/development/tools/misc/hydra-cli/default.nix
+++ b/pkgs/development/tools/misc/hydra-cli/default.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/development/tools/misc/igprof/default.nix b/pkgs/development/tools/misc/igprof/default.nix
index fc2036ec9bbd..229532c755e1 100644
--- a/pkgs/development/tools/misc/igprof/default.nix
+++ b/pkgs/development/tools/misc/igprof/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   CXXFLAGS = ["-fPIC" "-O2" "-w" "-fpermissive"];
 
   meta = {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     description = "Ignominous Profiler";
 
     longDescription = ''
diff --git a/pkgs/development/tools/misc/linuxkit/default.nix b/pkgs/development/tools/misc/linuxkit/default.nix
index eacb70a5ea8f..f5af6c868c85 100644
--- a/pkgs/development/tools/misc/linuxkit/default.nix
+++ b/pkgs/development/tools/misc/linuxkit/default.nix
@@ -24,8 +24,8 @@ buildGoModule rec {
   #   able to use the Virtualization framework at runtime.
   # - sigtool is allows us to validly sign such executables with a dummy
   #   authority.
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [ sigtool ];
-  buildInputs = lib.optionals stdenv.isDarwin [ Cocoa Virtualization ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ sigtool ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa Virtualization ];
 
   ldflags = [
     "-s"
@@ -43,7 +43,7 @@ buildGoModule rec {
   # - Finally, at the start of the fixup phase, the working directory is
   #   $sourceRoot/src/cmd/linuxkit, so it's simpler to use the sign target from
   #   the Makefile in that directory rather than $sourceRoot/Makefile.
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     make sign LOCAL_TARGET=$out/bin/linuxkit
   '';
   passthru.tests.version = testers.testVersion {
diff --git a/pkgs/development/tools/misc/lsof/default.nix b/pkgs/development/tools/misc/lsof/default.nix
index de1decee524f..98f7d239878d 100644
--- a/pkgs/development/tools/misc/lsof/default.nix
+++ b/pkgs/development/tools/misc/lsof/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     # We remove phony 'FRC' target that forces rebuilds:
     #   'version.h: FRC ...' is translated to 'version.h: ...'.
     sed -i lib/dialects/*/Makefile -e 's/version.h:\s*FRC/version.h:/'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i 's|lcurses|lncurses|g' Configure
   '';
 
diff --git a/pkgs/development/tools/misc/msitools/default.nix b/pkgs/development/tools/misc/msitools/default.nix
index 0d4d5c2c4331..6b190f9c659e 100644
--- a/pkgs/development/tools/misc/msitools/default.nix
+++ b/pkgs/development/tools/misc/msitools/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
   ];
 
   # WiX tests fail on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postPatch = ''
     patchShebangs subprojects/bats-core/{bin,libexec}
diff --git a/pkgs/development/tools/misc/netcoredbg/default.nix b/pkgs/development/tools/misc/netcoredbg/default.nix
index d3c08025108e..3fd8c3eeaa94 100644
--- a/pkgs/development/tools/misc/netcoredbg/default.nix
+++ b/pkgs/development/tools/misc/netcoredbg/default.nix
@@ -62,8 +62,8 @@ stdenv.mkDerivation {
   # include source here so that autoPatchelfHook can do it's job
   src = managed;
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ autoPatchelfHook ];
-  buildInputs = lib.optionals stdenv.isLinux [ stdenv.cc.cc.lib ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ stdenv.cc.cc.lib ];
   installPhase = ''
     mkdir -p $out/share/netcoredbg $out/bin
     cp ${unmanaged}/* $out/share/netcoredbg
diff --git a/pkgs/development/tools/misc/orogene/default.nix b/pkgs/development/tools/misc/orogene/default.nix
index 218fdf706885..0f772eac7dfc 100644
--- a/pkgs/development/tools/misc/orogene/default.nix
+++ b/pkgs/development/tools/misc/orogene/default.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/development/tools/misc/patchelf/unstable.nix b/pkgs/development/tools/misc/patchelf/unstable.nix
index 951493b84395..646fbb1aff14 100644
--- a/pkgs/development/tools/misc/patchelf/unstable.nix
+++ b/pkgs/development/tools/misc/patchelf/unstable.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
   nativeBuildInputs = [ autoreconfHook ];
   buildInputs = [ ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   passthru = {
     updateScript = unstableGitUpdater {
diff --git a/pkgs/development/tools/misc/pest-ide-tools/default.nix b/pkgs/development/tools/misc/pest-ide-tools/default.nix
index a962444a6fa5..d71155bd6711 100644
--- a/pkgs/development/tools/misc/pest-ide-tools/default.nix
+++ b/pkgs/development/tools/misc/pest-ide-tools/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/misc/pkg-config/default.nix b/pkgs/development/tools/misc/pkg-config/default.nix
index ae567bb01b73..a04b8874e990 100644
--- a/pkgs/development/tools/misc/pkg-config/default.nix
+++ b/pkgs/development/tools/misc/pkg-config/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   # http://bugs.freedesktop.org/show_bug.cgi?id=4738, migrated to
   # https://gitlab.freedesktop.org/pkg-config/pkg-config/issues/28
   patches = lib.optional (!vanilla) ./requires-private.patch
-    ++ lib.optional stdenv.isCygwin ./2.36.3-not-win32.patch;
+    ++ lib.optional stdenv.hostPlatform.isCygwin ./2.36.3-not-win32.patch;
 
   # These three tests fail due to a (desired) behavior change from our ./requires-private.patch
   postPatch =
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libiconv ];
 
   configureFlags = [ "--with-internal-glib" ]
-    ++ lib.optionals (stdenv.isSunOS) [ "--with-libiconv=gnu" "--with-system-library-path" "--with-system-include-path" "CFLAGS=-DENABLE_NLS" ]
+    ++ lib.optionals (stdenv.hostPlatform.isSunOS) [ "--with-libiconv=gnu" "--with-system-library-path" "--with-system-include-path" "CFLAGS=-DENABLE_NLS" ]
        # Can't run these tests while cross-compiling
     ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform)
        [ "glib_cv_stack_grows=no"
diff --git a/pkgs/development/tools/misc/premake/5.nix b/pkgs/development/tools/misc/premake/5.nix
index 64ee0c37317d..e84d2a57c943 100644
--- a/pkgs/development/tools/misc/premake/5.nix
+++ b/pkgs/development/tools/misc/premake/5.nix
@@ -11,13 +11,13 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-2R5gq4jaQsp8Ny1oGuIYkef0kn2UG9jMf20vq0714oY=";
   };
 
-  buildInputs = [ libuuid ] ++ lib.optionals stdenv.isDarwin [ Foundation readline ];
+  buildInputs = [ libuuid ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Foundation readline ];
 
   patches = [ ./no-curl-ca.patch ];
   postPatch = ''
     substituteInPlace contrib/curl/premake5.lua \
       --replace "ca = nil" "ca = '${cacert}/etc/ssl/certs/ca-bundle.crt'"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace premake5.lua \
       --replace -mmacosx-version-min=10.4 -mmacosx-version-min=10.5 \
       --replace-fail '"-arch arm64"' '""' \
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   '';
 
   buildPhase =
-    if stdenv.isDarwin then ''
+    if stdenv.hostPlatform.isDarwin then ''
        make -f Bootstrap.mak osx
     '' else ''
        make -f Bootstrap.mak linux
diff --git a/pkgs/development/tools/misc/pwninit/default.nix b/pkgs/development/tools/misc/pwninit/default.nix
index 341532d00422..d67c7e640611 100644
--- a/pkgs/development/tools/misc/pwninit/default.nix
+++ b/pkgs/development/tools/misc/pwninit/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
     sha256 = "sha256-tbZS7PdRFvO2ifoHA/w3cSPfqqHrLeLHAg6V8oG9gVE=";
   };
 
-  buildInputs = [ openssl xz ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl xz ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
   nativeBuildInputs = [ pkg-config makeBinaryWrapper ];
   postInstall = ''
     wrapProgram $out/bin/pwninit \
diff --git a/pkgs/development/tools/misc/riff/default.nix b/pkgs/development/tools/misc/riff/default.nix
index d6c7ee8164b9..aa85616720dd 100644
--- a/pkgs/development/tools/misc/riff/default.nix
+++ b/pkgs/development/tools/misc/riff/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/misc/runme/default.nix b/pkgs/development/tools/misc/runme/default.nix
index 8299ceba5395..9f7c7d6415b3 100644
--- a/pkgs/development/tools/misc/runme/default.nix
+++ b/pkgs/development/tools/misc/runme/default.nix
@@ -45,7 +45,7 @@ buildGoModule rec {
   ];
 
   # tests fail to access /etc/bashrc on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postPatch = ''
     substituteInPlace testdata/{categories/basic,runall/basic,script/basic}.txtar \
diff --git a/pkgs/development/tools/misc/rustywind/default.nix b/pkgs/development/tools/misc/rustywind/default.nix
index 6ffcd67a5557..12d3e2aa7f4c 100644
--- a/pkgs/development/tools/misc/rustywind/default.nix
+++ b/pkgs/development/tools/misc/rustywind/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-yZQSY2zqVpmhMd6+Avg2vBh0WQB2FJ2fiMuy5x9Zl9U=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/misc/samply/default.nix b/pkgs/development/tools/misc/samply/default.nix
index a929d90652a9..98dfbc3aca1e 100644
--- a/pkgs/development/tools/misc/samply/default.nix
+++ b/pkgs/development/tools/misc/samply/default.nix
@@ -41,7 +41,7 @@ rustPlatform.buildRustPackage rec {
     '';
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/development/tools/misc/sccache/default.nix b/pkgs/development/tools/misc/sccache/default.nix
index a268e1749f0d..fc7e2b485a09 100644
--- a/pkgs/development/tools/misc/sccache/default.nix
+++ b/pkgs/development/tools/misc/sccache/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
   ];
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/development/tools/misc/sipp/default.nix b/pkgs/development/tools/misc/sipp/default.nix
index 414be9560b9a..ae5441edb251 100644
--- a/pkgs/development/tools/misc/sipp/default.nix
+++ b/pkgs/development/tools/misc/sipp/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
     "-DUSE_GSL=1"
     "-DUSE_PCAP=1"
     "-DUSE_SSL=1"
-    "-DUSE_SCTP=${if stdenv.isLinux then "1" else "0"}"
+    "-DUSE_SCTP=${if stdenv.hostPlatform.isLinux then "1" else "0"}"
 
     # file RPATH_CHANGE could not write new RPATH
     "-DCMAKE_SKIP_BUILD_RPATH=ON"
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake git ];
   buildInputs = [ ncurses libpcap openssl ]
-    ++ lib.optional (stdenv.isLinux) lksctp-tools;
+    ++ lib.optional (stdenv.hostPlatform.isLinux) lksctp-tools;
 
   meta = with lib; {
     homepage = "http://sipp.sf.net";
diff --git a/pkgs/development/tools/misc/slint-lsp/default.nix b/pkgs/development/tools/misc/slint-lsp/default.nix
index 9fee7cca7f7e..f51b848a621a 100644
--- a/pkgs/development/tools/misc/slint-lsp/default.nix
+++ b/pkgs/development/tools/misc/slint-lsp/default.nix
@@ -21,7 +21,7 @@
 
 let
   rpathLibs = [ fontconfig libGL xorg.libxcb xorg.libX11 xorg.libXcursor xorg.libXrandr xorg.libXi ]
-    ++ lib.optionals stdenv.isLinux [ libxkbcommon wayland ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libxkbcommon wayland ];
 in
 rustPlatform.buildRustPackage rec {
   pname = "slint-lsp";
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ cmake pkg-config fontconfig ];
   buildInputs = rpathLibs ++ [ xorg.libxcb.dev ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     CoreGraphics
     CoreServices
@@ -46,7 +46,7 @@ rustPlatform.buildRustPackage rec {
     OpenGL
   ];
 
-  postInstall = lib.optionalString stdenv.isLinux  ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux  ''
     patchelf --set-rpath ${lib.makeLibraryPath rpathLibs} $out/bin/slint-lsp
   '';
 
diff --git a/pkgs/development/tools/misc/sqitch/default.nix b/pkgs/development/tools/misc/sqitch/default.nix
index 612ef223e67b..458e3b51d309 100644
--- a/pkgs/development/tools/misc/sqitch/default.nix
+++ b/pkgs/development/tools/misc/sqitch/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation {
   pname = "sqitch";
   version = sqitch.version;
 
-  nativeBuildInputs = [ makeWrapper ] ++ lib.optional stdenv.isDarwin shortenPerlShebang;
+  nativeBuildInputs = [ makeWrapper ] ++ lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
 
   src = sqitch;
   dontBuild = true;
@@ -34,7 +34,7 @@ stdenv.mkDerivation {
         ln -s ${sqitch}/$d $out/$d
       fi
     done
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/sqitch
   '';
   dontStrip = true;
diff --git a/pkgs/development/tools/misc/src-cli/default.nix b/pkgs/development/tools/misc/src-cli/default.nix
index 44b8cc62145d..c809b52826ca 100644
--- a/pkgs/development/tools/misc/src-cli/default.nix
+++ b/pkgs/development/tools/misc/src-cli/default.nix
@@ -25,9 +25,9 @@ buildGoModule rec {
     "cmd/src"
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     xorg.libX11
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
   ];
 
diff --git a/pkgs/development/tools/misc/stlink/default.nix b/pkgs/development/tools/misc/stlink/default.nix
index 16785e4d4b89..c5c54351ac64 100644
--- a/pkgs/development/tools/misc/stlink/default.nix
+++ b/pkgs/development/tools/misc/stlink/default.nix
@@ -11,7 +11,7 @@
 
 let
   # The Darwin build of stlink explicitly refers to static libusb.
-  libusb1' = if stdenv.isDarwin then libusb1.override { withStatic = true; } else libusb1;
+  libusb1' = if stdenv.hostPlatform.isDarwin then libusb1.override { withStatic = true; } else libusb1;
 
 # IMPORTANT: You need permissions to access the stlink usb devices.
 # Add services.udev.packages = [ pkgs.stlink ] to your configuration.nix
diff --git a/pkgs/development/tools/misc/strace-analyzer/default.nix b/pkgs/development/tools/misc/strace-analyzer/default.nix
index 625683196923..ee4242c1ca3d 100644
--- a/pkgs/development/tools/misc/strace-analyzer/default.nix
+++ b/pkgs/development/tools/misc/strace-analyzer/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeCheckInputs = [ strace ];
 
-  checkFlags = lib.optionals stdenv.isAarch64 [
+  checkFlags = lib.optionals stdenv.hostPlatform.isAarch64 [
     # thread 'analysis::tests::analyze_dd' panicked at 'assertion failed: ...'
     "--skip=analysis::tests::analyze_dd"
   ];
diff --git a/pkgs/development/tools/misc/sysbench/default.nix b/pkgs/development/tools/misc/sysbench/default.nix
index fa39c310a269..955a0296b72f 100644
--- a/pkgs/development/tools/misc/sysbench/default.nix
+++ b/pkgs/development/tools/misc/sysbench/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   version = "1.0.20";
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
-  buildInputs = [ libmysqlclient luajit ] ++ lib.optionals stdenv.isLinux [ libaio ];
+  buildInputs = [ libmysqlclient luajit ] ++ lib.optionals stdenv.hostPlatform.isLinux [ libaio ];
   depsBuildBuild = [ pkg-config ];
 
   src = fetchFromGitHub {
diff --git a/pkgs/development/tools/misc/texinfo/common.nix b/pkgs/development/tools/misc/texinfo/common.nix
index a43eab5f00e5..e630489ffae3 100644
--- a/pkgs/development/tools/misc/texinfo/common.nix
+++ b/pkgs/development/tools/misc/texinfo/common.nix
@@ -86,7 +86,7 @@ stdenv.mkDerivation {
       bash
       libintl
     ]
-    ++ optionals stdenv.isSunOS [
+    ++ optionals stdenv.hostPlatform.isSunOS [
       libiconv
       gawk
     ]
@@ -104,7 +104,7 @@ stdenv.mkDerivation {
     ++ optionals (crossBuildTools && lib.versionAtLeast version "7.1") [
       "texinfo_cv_sys_iconv_converts_euc_cn=yes"
     ]
-    ++ optional stdenv.isSunOS "AWK=${gawk}/bin/awk";
+    ++ optional stdenv.hostPlatform.isSunOS "AWK=${gawk}/bin/awk";
 
   installFlags = [ "TEXMF=$(out)/texmf-dist" ];
   installTargets = [
@@ -114,7 +114,7 @@ stdenv.mkDerivation {
 
   nativeCheckInputs = [ procps ] ++ optionals stdenv.buildPlatform.isFreeBSD [ freebsd.locale ];
 
-  doCheck = interactive && !stdenv.isDarwin && !stdenv.isSunOS; # flaky
+  doCheck = interactive && !stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isSunOS; # flaky
 
   checkFlags = optionals (!stdenv.hostPlatform.isMusl && versionOlder version "7") [
     # Test is known to fail on various locales on texinfo-6.8:
diff --git a/pkgs/development/tools/misc/texlab/default.nix b/pkgs/development/tools/misc/texlab/default.nix
index d691b94c38a3..68e29724eb00 100644
--- a/pkgs/development/tools/misc/texlab/default.nix
+++ b/pkgs/development/tools/misc/texlab/default.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ installShellFiles ]
     ++ lib.optional (!isCross) help2man;
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     Security
     CoreServices
diff --git a/pkgs/development/tools/misc/tokei/default.nix b/pkgs/development/tools/misc/tokei/default.nix
index ff3ceafc7f5c..6c6b232e9354 100644
--- a/pkgs/development/tools/misc/tokei/default.nix
+++ b/pkgs/development/tools/misc/tokei/default.nix
@@ -13,11 +13,11 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-U7Bode8qwDsNf4FVppfEHA9uiOFz74CtKgXG6xyYlT8=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv Security
   ];
 
-  checkInputs = lib.optionals stdenv.isDarwin [ zlib ];
+  checkInputs = lib.optionals stdenv.hostPlatform.isDarwin [ zlib ];
 
   # enable all output formats
   buildFeatures = [ "all" ];
diff --git a/pkgs/development/tools/misc/wasmer-pack/default.nix b/pkgs/development/tools/misc/wasmer-pack/default.nix
index 7c1d84de885d..f1216ae12416 100644
--- a/pkgs/development/tools/misc/wasmer-pack/default.nix
+++ b/pkgs/development/tools/misc/wasmer-pack/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-nyhjwEZyT8IEb0pTbou/EtN47gehge3fUCQVPs2TkIY=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/misc/xxgdb/default.nix b/pkgs/development/tools/misc/xxgdb/default.nix
index 1c6eca4729a0..5ba3b74a5a3d 100644
--- a/pkgs/development/tools/misc/xxgdb/default.nix
+++ b/pkgs/development/tools/misc/xxgdb/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Simple but powerful graphical interface to gdb";
     mainProgram = "xxgdb";
     license = licenses.mit;
diff --git a/pkgs/development/tools/mysql-shell/8.nix b/pkgs/development/tools/mysql-shell/8.nix
index 2f8983572f29..79ceb8a0aadd 100644
--- a/pkgs/development/tools/mysql-shell/8.nix
+++ b/pkgs/development/tools/mysql-shell/8.nix
@@ -72,8 +72,8 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   nativeBuildInputs = [ pkg-config cmake git bison makeWrapper ]
-    ++ lib.optionals (!stdenv.isDarwin) [ rpcsvc-proto ]
-    ++ lib.optionals stdenv.isDarwin [ cctools DarwinTools ];
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ rpcsvc-proto ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools DarwinTools ];
 
   buildInputs = [
     curl
@@ -95,8 +95,8 @@ stdenv.mkDerivation (finalAttrs: {
     python3
     antlr.runtime.cpp
   ] ++ pythonDeps
-  ++ lib.optionals stdenv.isLinux [ libtirpc ]
-  ++ lib.optionals stdenv.isDarwin [ CoreServices ];
+  ++ lib.optionals stdenv.hostPlatform.isLinux [ libtirpc ]
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   preConfigure = ''
     # Build MySQL
diff --git a/pkgs/development/tools/mysql-shell/innovation.nix b/pkgs/development/tools/mysql-shell/innovation.nix
index 32fd0746360f..14ff96542c46 100644
--- a/pkgs/development/tools/mysql-shell/innovation.nix
+++ b/pkgs/development/tools/mysql-shell/innovation.nix
@@ -72,8 +72,8 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   nativeBuildInputs = [ pkg-config cmake git bison makeWrapper ]
-    ++ lib.optionals (!stdenv.isDarwin) [ rpcsvc-proto ]
-    ++ lib.optionals stdenv.isDarwin [ cctools DarwinTools ];
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ rpcsvc-proto ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools DarwinTools ];
 
   buildInputs = [
     curl
@@ -95,8 +95,8 @@ stdenv.mkDerivation (finalAttrs: {
     python3
     antlr.runtime.cpp
   ] ++ pythonDeps
-  ++ lib.optionals stdenv.isLinux [ libtirpc ]
-  ++ lib.optionals stdenv.isDarwin [ CoreServices ];
+  ++ lib.optionals stdenv.hostPlatform.isLinux [ libtirpc ]
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   preConfigure = ''
     # Build MySQL
diff --git a/pkgs/development/tools/nest-cli/default.nix b/pkgs/development/tools/nest-cli/default.nix
index 9c5f8a12df5b..c9d422781827 100644
--- a/pkgs/development/tools/nest-cli/default.nix
+++ b/pkgs/development/tools/nest-cli/default.nix
@@ -27,7 +27,7 @@ buildNpmPackage rec {
     python3
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/development/tools/nodehun/default.nix b/pkgs/development/tools/nodehun/default.nix
index 83ba3fe2e494..5bc067085ed8 100644
--- a/pkgs/development/tools/nodehun/default.nix
+++ b/pkgs/development/tools/nodehun/default.nix
@@ -30,9 +30,9 @@ buildNpmPackage {
 
   npmDepsHash = "sha256-mV6rWNf2p2w4H0ESUT0/Ybtx9YEdvO5l2gCvlWFXK+U=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
   nativeBuildInputs = [ node-gyp python3 ]
-    ++ lib.optionals stdenv.isDarwin [ cctools ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools ];
 
   postInstall = ''
     # Only keep the necessary parts of build/Release to reduce closure size
diff --git a/pkgs/development/tools/nsis/default.nix b/pkgs/development/tools/nsis/default.nix
index 32e69dcf7042..1651a3c43d9f 100644
--- a/pkgs/development/tools/nsis/default.nix
+++ b/pkgs/development/tools/nsis/default.nix
@@ -31,16 +31,16 @@ stdenv.mkDerivation rec {
   '';
 
   nativeBuildInputs = [ scons ];
-  buildInputs = [ zlib ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = [ zlib ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   CPPPATH = symlinkJoin {
      name = "nsis-includes";
-     paths = [ zlib.dev ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+     paths = [ zlib.dev ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
   };
 
   LIBPATH = symlinkJoin {
     name = "nsis-libs";
-    paths = [ zlib ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+    paths = [ zlib ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
   };
 
   sconsFlags = [
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     "SKIPUTILS=all"
     "SKIPMISC=all"
     "NSIS_CONFIG_CONST_DATA=no"
-  ] ++ lib.optional stdenv.isDarwin "APPEND_LINKFLAGS=-liconv";
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "APPEND_LINKFLAGS=-liconv";
 
   preBuild = ''
     sconsFlagsArray+=(
@@ -71,6 +71,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     maintainers = with maintainers; [ pombeirp ];
     mainProgram = "makensis";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/tools/nufmt/default.nix b/pkgs/development/tools/nufmt/default.nix
index 4c9e6ff4af6a..e5e656877ef9 100644
--- a/pkgs/development/tools/nufmt/default.nix
+++ b/pkgs/development/tools/nufmt/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-BwKLl8eMCrqVt9PA5SHAXxu3ypP2ePcSuljKL+wSkvw=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     IOKit
   ]);
 
diff --git a/pkgs/development/tools/ocaml/dune/3.nix b/pkgs/development/tools/ocaml/dune/3.nix
index f2c00e16c9e7..1aa192f1daab 100644
--- a/pkgs/development/tools/ocaml/dune/3.nix
+++ b/pkgs/development/tools/ocaml/dune/3.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ ocaml findlib ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/development/tools/ocaml/opam/default.nix b/pkgs/development/tools/ocaml/opam/default.nix
index ec34ba2f17fc..4e7d0af89ab0 100644
--- a/pkgs/development/tools/ocaml/opam/default.nix
+++ b/pkgs/development/tools/ocaml/opam/default.nix
@@ -17,8 +17,8 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ makeWrapper unzip ocaml curl ];
   buildInputs = [ ncurses getconf ]
-    ++ lib.optionals stdenv.isLinux [ bubblewrap ]
-    ++ lib.optionals stdenv.isDarwin [ Foundation ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ bubblewrap ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Foundation ];
 
   patches = [ ./opam-shebangs.patch ];
 
@@ -40,7 +40,7 @@ stdenv.mkDerivation {
     mv $out/bin/opam $out/bin/.opam-wrapped
     makeWrapper $out/bin/.opam-wrapped $out/bin/opam \
       --argv0 "opam" \
-      --suffix PATH : ${unzip}/bin:${curl}/bin:${lib.optionalString stdenv.isLinux "${bubblewrap}/bin:"}${getconf}/bin \
+      --suffix PATH : ${unzip}/bin:${curl}/bin:${lib.optionalString stdenv.hostPlatform.isLinux "${bubblewrap}/bin:"}${getconf}/bin \
       --set OPAM_USER_PATH_RO /run/current-system/sw/bin:/nix/
     $out/bin/opam-installer --prefix=$installer opam-installer.install
   '';
diff --git a/pkgs/development/tools/open-policy-agent/default.nix b/pkgs/development/tools/open-policy-agent/default.nix
index 891733635cce..4b11dd7576dd 100644
--- a/pkgs/development/tools/open-policy-agent/default.nix
+++ b/pkgs/development/tools/open-policy-agent/default.nix
@@ -8,7 +8,7 @@
 , enableWasmEval ? false
 }:
 
-assert enableWasmEval && stdenv.isDarwin -> builtins.throw "building with wasm on darwin is failing in nixpkgs";
+assert enableWasmEval && stdenv.hostPlatform.isDarwin -> builtins.throw "building with wasm on darwin is failing in nixpkgs";
 
 buildGoModule rec {
   pname = "open-policy-agent";
@@ -55,9 +55,9 @@ buildGoModule rec {
     # want but also limits the tests
     # Also avoid wasm tests on darwin due to wasmtime-go build issues
     getGoDirs() {
-      go list ./... | grep -v -e e2e ${lib.optionalString stdenv.isDarwin "-e wasm"}
+      go list ./... | grep -v -e e2e ${lib.optionalString stdenv.hostPlatform.isDarwin "-e wasm"}
     }
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # remove tests that have "too many open files"/"no space left on device" issues on darwin in hydra
     rm server/server_test.go
   '';
diff --git a/pkgs/development/tools/oxlint/default.nix b/pkgs/development/tools/oxlint/default.nix
index 4625b97eb000..5feddddb90b6 100644
--- a/pkgs/development/tools/oxlint/default.nix
+++ b/pkgs/development/tools/oxlint/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     rust-jemalloc-sys
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/pactorio/default.nix b/pkgs/development/tools/pactorio/default.nix
index e6254bdbbb6f..06b55790ddf6 100644
--- a/pkgs/development/tools/pactorio/default.nix
+++ b/pkgs/development/tools/pactorio/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles pkg-config ];
 
-  buildInputs = [ bzip2 ] ++ lib.optional stdenv.isDarwin Security;
+  buildInputs = [ bzip2 ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   postInstall = ''
     installManPage artifacts/pactorio.1
diff --git a/pkgs/development/tools/parsing/antlr/2.7.7.nix b/pkgs/development/tools/parsing/antlr/2.7.7.nix
index a47918f4354b..991925cb4e76 100644
--- a/pkgs/development/tools/parsing/antlr/2.7.7.nix
+++ b/pkgs/development/tools/parsing/antlr/2.7.7.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   patches = [ ./2.7.7-fixes.patch ];
   buildInputs = [ jdk ];
 
-  CXXFLAGS = lib.optionalString stdenv.isDarwin "-D_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION";
+  CXXFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-D_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION";
 
   meta = with lib; {
     description = "Powerful parser generator";
diff --git a/pkgs/development/tools/parsing/antlr/4.nix b/pkgs/development/tools/parsing/antlr/4.nix
index 79db5301add9..f575110b87fd 100644
--- a/pkgs/development/tools/parsing/antlr/4.nix
+++ b/pkgs/development/tools/parsing/antlr/4.nix
@@ -89,7 +89,7 @@ let
 
         nativeBuildInputs = [ cmake ninja pkg-config ];
         buildInputs =
-          lib.optional stdenv.isDarwin CoreFoundation ++
+          lib.optional stdenv.hostPlatform.isDarwin CoreFoundation ++
           extraCppBuildInputs;
 
         cmakeDir = "../runtime/Cpp";
@@ -153,7 +153,7 @@ in {
     version = "4.10.1";
     sourceSha256 = "sha256-Z1P81L0aPbimitzrHH/9rxsMCA6Qn3i42jFbUmVqu1E=";
     jarSha256 = "sha256-QZSdQfINMdW4J3GHc13XVRCN9Ss422yGUQjTOCBA+Rg=";
-    extraCppBuildInputs = lib.optional stdenv.isLinux libuuid;
+    extraCppBuildInputs = lib.optional stdenv.hostPlatform.isLinux libuuid;
     extraCppCmakeFlags = [
       "-DANTLR4_INSTALL=ON"
       "-DANTLR_BUILD_CPP_TESTS=OFF"
@@ -165,7 +165,7 @@ in {
     sourceSha256 = "1af3cfqwk7lq1b5qsh1am0922fyhy7wmlpnrqdnvch3zzza9n1qm";
     jarSha256 = "0dnz2x54kigc58bxnynjhmr5iq49f938vj6p50gdir1xdna41kdg";
     extraCppBuildInputs = [ utf8cpp ]
-      ++ lib.optional stdenv.isLinux libuuid;
+      ++ lib.optional stdenv.hostPlatform.isLinux libuuid;
     extraCppCmakeFlags = [
       "-DCMAKE_CXX_FLAGS='-I${lib.getDev utf8cpp}/include/utf8cpp'"
     ];
@@ -178,7 +178,7 @@ in {
     version = "4.8";
     sourceSha256 = "1qal3add26qxskm85nk7r758arladn5rcyjinmhlhznmpbbv9j8m";
     jarSha256 = "0nms976cnqyr1ndng3haxkmknpdq6xli4cpf4x4al0yr21l9v93k";
-    extraCppBuildInputs = lib.optional stdenv.isLinux libuuid;
+    extraCppBuildInputs = lib.optional stdenv.hostPlatform.isLinux libuuid;
     extraCppCmakeFlags = [ "-DANTLR4_INSTALL=ON" ];
   }).antlr;
 }
diff --git a/pkgs/development/tools/parsing/bison/default.nix b/pkgs/development/tools/parsing/bison/default.nix
index 43ef3ffa3e19..80a2ad835c28 100644
--- a/pkgs/development/tools/parsing/bison/default.nix
+++ b/pkgs/development/tools/parsing/bison/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   # cannot add bash to buildInputs due to infinite recursion
   strictDeps = stdenv.hostPlatform != stdenv.buildPlatform;
 
-  nativeBuildInputs = [ m4 perl ] ++ lib.optional stdenv.isSunOS help2man;
+  nativeBuildInputs = [ m4 perl ] ++ lib.optional stdenv.hostPlatform.isSunOS help2man;
   propagatedBuildInputs = [ m4 ];
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/tools/parsing/flex/default.nix b/pkgs/development/tools/parsing/flex/default.nix
index bd62241ec98c..84cb5f35d3c6 100644
--- a/pkgs/development/tools/parsing/flex/default.nix
+++ b/pkgs/development/tools/parsing/flex/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
     export ac_cv_func_realloc_0_nonnull=yes
   '';
 
-  postConfigure = lib.optionalString (stdenv.isDarwin || stdenv.isCygwin) ''
+  postConfigure = lib.optionalString (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isCygwin) ''
     sed -i Makefile -e 's/-no-undefined//;'
   '';
 
diff --git a/pkgs/development/tools/parsing/jikespg/default.nix b/pkgs/development/tools/parsing/jikespg/default.nix
index 03814d3cfbe7..a6b64efb7fcf 100644
--- a/pkgs/development/tools/parsing/jikespg/default.nix
+++ b/pkgs/development/tools/parsing/jikespg/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   postPatch = ''
-    substituteInPlace Makefile --replace-fail "gcc" "${stdenv.cc.targetPrefix}cc ${lib.optionalString stdenv.isDarwin "-std=c89"}"
+    substituteInPlace Makefile --replace-fail "gcc" "${stdenv.cc.targetPrefix}cc ${lib.optionalString stdenv.hostPlatform.isDarwin "-std=c89"}"
   '';
 
   sourceRoot = "jikespg/src";
diff --git a/pkgs/development/tools/parsing/ragel/default.nix b/pkgs/development/tools/parsing/ragel/default.nix
index 72e77a55a152..a6090f104fa2 100644
--- a/pkgs/development/tools/parsing/ragel/default.nix
+++ b/pkgs/development/tools/parsing/ragel/default.nix
@@ -50,6 +50,6 @@ in
     version = "7.0.0.12";
     sha256 = "0x3si355lv6q051lgpg8bpclpiq5brpri5lv3p8kk2qhzfbyz69r";
     license = lib.licenses.mit;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/tools/parsing/tree-sitter/default.nix b/pkgs/development/tools/parsing/tree-sitter/default.nix
index ea3386e15d51..662d6ace13a9 100644
--- a/pkgs/development/tools/parsing/tree-sitter/default.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/default.nix
@@ -114,7 +114,7 @@ rustPlatform.buildRustPackage {
   cargoHash = "sha256-44FIO0kPso6NxjLwmggsheILba3r9GEhDld2ddt601g=";
 
   buildInputs =
-    lib.optionals stdenv.isDarwin [ Security CoreServices ];
+    lib.optionals stdenv.hostPlatform.isDarwin [ Security CoreServices ];
   nativeBuildInputs =
     [ which ]
     ++ lib.optionals webUISupport [ emscripten ];
diff --git a/pkgs/development/tools/perseus-cli/default.nix b/pkgs/development/tools/perseus-cli/default.nix
index cffa0299beab..ba795a6ef870 100644
--- a/pkgs/development/tools/perseus-cli/default.nix
+++ b/pkgs/development/tools/perseus-cli/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-i7MPmO9MoANZLzmR5gsD+v0gyDtFbzhsmE9xOsb88L0=";
 
   nativeBuildInputs = [ makeWrapper ];
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   postInstall = ''
     wrapProgram $out/bin/perseus \
diff --git a/pkgs/development/tools/pgformatter/default.nix b/pkgs/development/tools/pgformatter/default.nix
index d4407fa5ec24..cad3d2af4505 100644
--- a/pkgs/development/tools/pgformatter/default.nix
+++ b/pkgs/development/tools/pgformatter/default.nix
@@ -35,8 +35,8 @@ perlPackages.buildPerlPackage rec {
       --replace "'INSTALLDIRS'  => \$INSTALLDIRS," "'INSTALLDIRS'  => \$INSTALLDIRS, 'INSTALLVENDORLIB' => 'bin/lib', 'INSTALLVENDORBIN' => 'bin', 'INSTALLVENDORSCRIPT' => 'bin', 'INSTALLVENDORMAN1DIR' => 'share/man/man1', 'INSTALLVENDORMAN3DIR' => 'share/man/man3',"
   '';
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/pg_format
   '';
 
diff --git a/pkgs/development/tools/pgtop/default.nix b/pkgs/development/tools/pgtop/default.nix
index 5798b7da517a..066e07fd484a 100644
--- a/pkgs/development/tools/pgtop/default.nix
+++ b/pkgs/development/tools/pgtop/default.nix
@@ -15,8 +15,8 @@ perlPackages.buildPerlPackage rec {
 
   buildInputs = with perlPackages; [ DBI DBDPg TermReadKey JSON LWP ];
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/pgtop
   '';
 
diff --git a/pkgs/development/tools/poac/default.nix b/pkgs/development/tools/poac/default.nix
index 95a028c6f809..d6a1ad39bdaf 100644
--- a/pkgs/development/tools/poac/default.nix
+++ b/pkgs/development/tools/poac/default.nix
@@ -71,8 +71,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake git cacert ];
   buildInputs = [
     (boost179.override {
-      enableShared = stdenv.isDarwin;
-      enableStatic = !stdenv.isDarwin;
+      enableShared = stdenv.hostPlatform.isDarwin;
+      enableStatic = !stdenv.hostPlatform.isDarwin;
     })
     git2-cpp
     glob
diff --git a/pkgs/development/tools/py-spy/default.nix b/pkgs/development/tools/py-spy/default.nix
index 8522333ef9db..01d847649bbf 100644
--- a/pkgs/development/tools/py-spy/default.nix
+++ b/pkgs/development/tools/py-spy/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
     python3
   ];
 
-  buildInputs = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  buildInputs = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     # Pull a header that contains a definition of proc_pid_rusage().
     darwin.apple_sdk_11_0.Libsystem
   ];
diff --git a/pkgs/development/tools/rbspy/default.nix b/pkgs/development/tools/rbspy/default.nix
index a109b0ea579e..beae01a2c57e 100644
--- a/pkgs/development/tools/rbspy/default.nix
+++ b/pkgs/development/tools/rbspy/default.nix
@@ -47,7 +47,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [
     ruby
     which
-  ] ++ lib.optional stdenv.isDarwin rustPlatform.bindgenHook;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin rustPlatform.bindgenHook;
 
   passthru.updateScript = nix-update-script { };
 
diff --git a/pkgs/development/tools/rcodesign/default.nix b/pkgs/development/tools/rcodesign/default.nix
index 72c261cfa0ed..a110611ab4a9 100644
--- a/pkgs/development/tools/rcodesign/default.nix
+++ b/pkgs/development/tools/rcodesign/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-cpQBdxTw/ge4VtzjdL2a2xgSeCT22fMIjuKu5UEedhI=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/rebazel/default.nix b/pkgs/development/tools/rebazel/default.nix
index d5979ac53dbd..4b9549b8a58a 100644
--- a/pkgs/development/tools/rebazel/default.nix
+++ b/pkgs/development/tools/rebazel/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-cBAm8LyNKEVJkhZJ+QZU5XtQutb1oNvad8xH70Bi2LM=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   meta = with lib; {
     description = "tool for expediting bazel build workflows";
diff --git a/pkgs/development/tools/reindeer/default.nix b/pkgs/development/tools/reindeer/default.nix
index f3d384c5bfa2..3989e24c763f 100644
--- a/pkgs/development/tools/reindeer/default.nix
+++ b/pkgs/development/tools/reindeer/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs =
-    [ openssl ] ++ lib.optionals stdenv.isDarwin [
+    [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       libiconv
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.CoreServices
diff --git a/pkgs/development/tools/remodel/default.nix b/pkgs/development/tools/remodel/default.nix
index 2788f4fb11d8..83b32a7dd26f 100644
--- a/pkgs/development/tools/remodel/default.nix
+++ b/pkgs/development/tools/remodel/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/development/tools/reshape/default.nix b/pkgs/development/tools/reshape/default.nix
index 273b0577dc04..256f6515efd6 100644
--- a/pkgs/development/tools/reshape/default.nix
+++ b/pkgs/development/tools/reshape/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-VTJ3FNhVLgxo/VVBhk1yF9UUktLXcbrEkYwoyoWFhXA=";
 
   buildInputs =
-    lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+    lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   nativeCheckInputs = [
     postgresqlTestHook
diff --git a/pkgs/development/tools/rojo/default.nix b/pkgs/development/tools/rojo/default.nix
index 32ebfcf4189c..ada53d437f4a 100644
--- a/pkgs/development/tools/rojo/default.nix
+++ b/pkgs/development/tools/rojo/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     SystemConfiguration
   ];
@@ -39,7 +39,7 @@ rustPlatform.buildRustPackage rec {
   OPENSSL_NO_VENDOR = "1";
 
   # tests flaky on darwin on hydra
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Project management tool for Roblox";
diff --git a/pkgs/development/tools/rover/default.nix b/pkgs/development/tools/rover/default.nix
index c70869299c9d..92b5339fdfe9 100644
--- a/pkgs/development/tools/rover/default.nix
+++ b/pkgs/development/tools/rover/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-Rf4kRXYW+WAF1rM7o8PmXBLgp/YyA8y/TqbZL22VOqI=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/development/tools/rtags/default.nix b/pkgs/development/tools/rtags/default.nix
index 3710cb6122a8..b3f9e00a81a5 100644
--- a/pkgs/development/tools/rtags/default.nix
+++ b/pkgs/development/tools/rtags/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config llvmPackages.llvm.dev ];
   buildInputs = [ llvmPackages.llvm llvmPackages.libclang openssl emacs ]
     ++ lib.optionals stdenv.cc.isGNU [ llvmPackages.clang-unwrapped ]
-    ++ lib.optionals stdenv.isDarwin [ apple_sdk.libs.xpc apple_sdk.frameworks.CoreServices ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ apple_sdk.libs.xpc apple_sdk.frameworks.CoreServices ];
 
   src = fetchFromGitHub {
     owner = "andersbakken";
diff --git a/pkgs/development/tools/rubyfmt/default.nix b/pkgs/development/tools/rubyfmt/default.nix
index 287959dbf0b5..480826ab55d0 100644
--- a/pkgs/development/tools/rubyfmt/default.nix
+++ b/pkgs/development/tools/rubyfmt/default.nix
@@ -42,7 +42,7 @@ rustPlatform.buildRustPackage rec {
     libxcrypt
     libyaml
     rust-jemalloc-sys-unprefixed
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     readline
     libiconv
     libobjc
@@ -67,7 +67,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-QZ26GmsKyENkzdCGg2peie/aJhEt7KQAF/lwsibonDk=";
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-fdeclspec";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-fdeclspec";
 
   preFixup = ''
     mv $out/bin/rubyfmt{-main,}
@@ -78,7 +78,7 @@ rustPlatform.buildRustPackage rec {
     homepage = "https://github.com/fables-tales/rubyfmt";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ bobvanderlinden ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "rubyfmt";
   };
 }
diff --git a/pkgs/development/tools/rust/cargo-about/default.nix b/pkgs/development/tools/rust/cargo-about/default.nix
index ee7da1db8890..3da8e4beea34 100644
--- a/pkgs/development/tools/rust/cargo-about/default.nix
+++ b/pkgs/development/tools/rust/cargo-about/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ zstd ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
     ];
diff --git a/pkgs/development/tools/rust/cargo-asm/default.nix b/pkgs/development/tools/rust/cargo-asm/default.nix
index 9c66f2cd9798..4e8cecb4a338 100644
--- a/pkgs/development/tools/rust/cargo-asm/default.nix
+++ b/pkgs/development/tools/rust/cargo-asm/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-QsaOFman+VBSIAbCalW63I3QXY0uECZy9+ufOKhSQrA=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # Test checks against machine code output, which fails with some
   # LLVM/compiler versions.
diff --git a/pkgs/development/tools/rust/cargo-audit/default.nix b/pkgs/development/tools/rust/cargo-audit/default.nix
index 01f72f1bc421..9de3d6c9437c 100644
--- a/pkgs/development/tools/rust/cargo-audit/default.nix
+++ b/pkgs/development/tools/rust/cargo-audit/default.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     SystemConfiguration
   ];
diff --git a/pkgs/development/tools/rust/cargo-bazel/default.nix b/pkgs/development/tools/rust/cargo-bazel/default.nix
index 22567ad2d135..151f155f9ee1 100644
--- a/pkgs/development/tools/rust/cargo-bazel/default.nix
+++ b/pkgs/development/tools/rust/cargo-bazel/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-+PVNB/apG5AR236Ikqt+JTz20zxc0HUi7z6BU6xq/Fw=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # `test_data` is explicitly excluded from the package published to crates.io, so tests cannot be run
   doCheck = false;
diff --git a/pkgs/development/tools/rust/cargo-binstall/default.nix b/pkgs/development/tools/rust/cargo-binstall/default.nix
index 205484f5fa70..f7b24266123f 100644
--- a/pkgs/development/tools/rust/cargo-binstall/default.nix
+++ b/pkgs/development/tools/rust/cargo-binstall/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
     bzip2
     xz
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-bisect-rustc/default.nix b/pkgs/development/tools/rust/cargo-bisect-rustc/default.nix
index 9babac9ebade..8a89387ca848 100644
--- a/pkgs/development/tools/rust/cargo-bisect-rustc/default.nix
+++ b/pkgs/development/tools/rust/cargo-bisect-rustc/default.nix
@@ -39,13 +39,13 @@ rustPlatform.buildRustPackage rec {
               --subst-var libPath
           '';
     in
-    lib.optionals stdenv.isLinux [ patchelfPatch ];
+    lib.optionals stdenv.hostPlatform.isLinux [ patchelfPatch ];
 
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
     ];
diff --git a/pkgs/development/tools/rust/cargo-bundle/default.nix b/pkgs/development/tools/rust/cargo-bundle/default.nix
index daf4bc230b8d..7d302da1003b 100644
--- a/pkgs/development/tools/rust/cargo-bundle/default.nix
+++ b/pkgs/development/tools/rust/cargo-bundle/default.nix
@@ -26,9 +26,9 @@ rustPlatform.buildRustPackage {
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libxkbcommon
     wayland
   ];
diff --git a/pkgs/development/tools/rust/cargo-c/default.nix b/pkgs/development/tools/rust/cargo-c/default.nix
index ca0f8a590ebd..3dd89aefe7ac 100644
--- a/pkgs/development/tools/rust/cargo-c/default.nix
+++ b/pkgs/development/tools/rust/cargo-c/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-UfhIz87s0CLUDbIpWMPzGQ7qVmh14GuiFoquauSbTOw=";
 
   nativeBuildInputs = [ pkg-config (lib.getDev curl) ];
-  buildInputs = [ openssl curl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl curl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
     libiconv
     Security
diff --git a/pkgs/development/tools/rust/cargo-cache/default.nix b/pkgs/development/tools/rust/cargo-cache/default.nix
index 1c19b61bf8b4..fc5da4b5b1cb 100644
--- a/pkgs/development/tools/rust/cargo-cache/default.nix
+++ b/pkgs/development/tools/rust/cargo-cache/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-275QREIcncgBk4ah/CivSz5N2m6s/XPCfp6JGChpr38=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security ];
 
   checkFlags = [ "offline_tests" ];
 
diff --git a/pkgs/development/tools/rust/cargo-clone/default.nix b/pkgs/development/tools/rust/cargo-clone/default.nix
index c5e065eb2eaa..ee119146feaf 100644
--- a/pkgs/development/tools/rust/cargo-clone/default.nix
+++ b/pkgs/development/tools/rust/cargo-clone/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     Security
     SystemConfiguration
diff --git a/pkgs/development/tools/rust/cargo-codspeed/default.nix b/pkgs/development/tools/rust/cargo-codspeed/default.nix
index 23880c2480fc..ce20d409df28 100644
--- a/pkgs/development/tools/rust/cargo-codspeed/default.nix
+++ b/pkgs/development/tools/rust/cargo-codspeed/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
     libgit2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-component/default.nix b/pkgs/development/tools/rust/cargo-component/default.nix
index fa8ba8accb04..e23844785c62 100644
--- a/pkgs/development/tools/rust/cargo-component/default.nix
+++ b/pkgs/development/tools/rust/cargo-component/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-crev/default.nix b/pkgs/development/tools/rust/cargo-crev/default.nix
index 0a2b797610d4..67c5ca0bc0a3 100644
--- a/pkgs/development/tools/rust/cargo-crev/default.nix
+++ b/pkgs/development/tools/rust/cargo-crev/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ perl pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ SystemConfiguration Security CoreFoundation libiconv curl ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ SystemConfiguration Security CoreFoundation libiconv curl ];
 
   nativeCheckInputs = [ git ];
 
diff --git a/pkgs/development/tools/rust/cargo-cyclonedx/default.nix b/pkgs/development/tools/rust/cargo-cyclonedx/default.nix
index 841a502a31f7..3fbb42c88aa1 100644
--- a/pkgs/development/tools/rust/cargo-cyclonedx/default.nix
+++ b/pkgs/development/tools/rust/cargo-cyclonedx/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     SystemConfiguration
     CoreFoundation
diff --git a/pkgs/development/tools/rust/cargo-deadlinks/default.nix b/pkgs/development/tools/rust/cargo-deadlinks/default.nix
index d206e739bb83..70c9a377f00c 100644
--- a/pkgs/development/tools/rust/cargo-deadlinks/default.nix
+++ b/pkgs/development/tools/rust/cargo-deadlinks/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
     # assumes the target is x86_64-unknown-linux-gnu
     "--skip simple_project::it_checks_okay_project_correctly";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "Cargo subcommand to check rust documentation for broken links";
diff --git a/pkgs/development/tools/rust/cargo-deny/default.nix b/pkgs/development/tools/rust/cargo-deny/default.nix
index 573bdb96db02..71ff14557fec 100644
--- a/pkgs/development/tools/rust/cargo-deny/default.nix
+++ b/pkgs/development/tools/rust/cargo-deny/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/development/tools/rust/cargo-dephell/default.nix b/pkgs/development/tools/rust/cargo-dephell/default.nix
index 1302fd581bbe..b1f390f77388 100644
--- a/pkgs/development/tools/rust/cargo-dephell/default.nix
+++ b/pkgs/development/tools/rust/cargo-dephell/default.nix
@@ -26,13 +26,13 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [
     pkg-config
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     curl
   ];
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     curl
     darwin.apple_sdk.frameworks.Security
     libgit2
diff --git a/pkgs/development/tools/rust/cargo-dist/default.nix b/pkgs/development/tools/rust/cargo-dist/default.nix
index e7f5003768a6..cbdd2a90b591 100644
--- a/pkgs/development/tools/rust/cargo-dist/default.nix
+++ b/pkgs/development/tools/rust/cargo-dist/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
     bzip2
     xz
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-duplicates/default.nix b/pkgs/development/tools/rust/cargo-duplicates/default.nix
index f9417651cf6a..17c9cd7d83de 100644
--- a/pkgs/development/tools/rust/cargo-duplicates/default.nix
+++ b/pkgs/development/tools/rust/cargo-duplicates/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
     libgit2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-edit/default.nix b/pkgs/development/tools/rust/cargo-edit/default.nix
index 7a72bc360253..f42607332d71 100644
--- a/pkgs/development/tools/rust/cargo-edit/default.nix
+++ b/pkgs/development/tools/rust/cargo-edit/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl zlib ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl zlib ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-feature/default.nix b/pkgs/development/tools/rust/cargo-feature/default.nix
index 1e713076e1f3..81f0a1c62bb6 100644
--- a/pkgs/development/tools/rust/cargo-feature/default.nix
+++ b/pkgs/development/tools/rust/cargo-feature/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-8qrpW/gU7BvxN3nSbFWhbgu5bwsdzYZTS3w3kcwsGbU=";
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   meta = with lib; {
     description = "Cargo plugin to manage dependency features";
diff --git a/pkgs/development/tools/rust/cargo-flamegraph/default.nix b/pkgs/development/tools/rust/cargo-flamegraph/default.nix
index 4a6d9c3ff39d..aca8e713e6e3 100644
--- a/pkgs/development/tools/rust/cargo-flamegraph/default.nix
+++ b/pkgs/development/tools/rust/cargo-flamegraph/default.nix
@@ -15,12 +15,12 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-KwpveTiViY+C4A+fE5yeGuT9PXbDyi+YsOc75mX2KdU=";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ makeWrapper ];
-  buildInputs = lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ makeWrapper ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/cargo-flamegraph \
       --set-default PERF ${perf}/bin/perf
     wrapProgram $out/bin/flamegraph \
diff --git a/pkgs/development/tools/rust/cargo-fund/default.nix b/pkgs/development/tools/rust/cargo-fund/default.nix
index 42f703aaa240..23d13a8841ae 100644
--- a/pkgs/development/tools/rust/cargo-fund/default.nix
+++ b/pkgs/development/tools/rust/cargo-fund/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security libiconv curl ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security libiconv curl ];
 
   meta = with lib; {
     description = "Discover funding links for your project's dependencies";
diff --git a/pkgs/development/tools/rust/cargo-fuzz/default.nix b/pkgs/development/tools/rust/cargo-fuzz/default.nix
index fc60b761fe4e..6c296e8ccbce 100644
--- a/pkgs/development/tools/rust/cargo-fuzz/default.nix
+++ b/pkgs/development/tools/rust/cargo-fuzz/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-sfvepPpYtgA0TuUlu0CD50HX933AVQbUGzJBNAzFR94=";
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   doCheck = false;
 
diff --git a/pkgs/development/tools/rust/cargo-generate/default.nix b/pkgs/development/tools/rust/cargo-generate/default.nix
index f4c25a60dbc4..fa6a0578028f 100644
--- a/pkgs/development/tools/rust/cargo-generate/default.nix
+++ b/pkgs/development/tools/rust/cargo-generate/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ libgit2 openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ libgit2 openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
@@ -44,7 +44,7 @@ rustPlatform.buildRustPackage rec {
   # - should_canonicalize: the test assumes that it will be called from the /Users/<project_dir>/ folder on darwin variant.
   checkFlags = [
     "--skip=favorites::favorites_default_to_git_if_not_defined"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--skip=git::utils::should_canonicalize"
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-guppy/default.nix b/pkgs/development/tools/rust/cargo-guppy/default.nix
index 13bb3eaff1cf..68a696ab1ae9 100644
--- a/pkgs/development/tools/rust/cargo-guppy/default.nix
+++ b/pkgs/development/tools/rust/cargo-guppy/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-hf2/default.nix b/pkgs/development/tools/rust/cargo-hf2/default.nix
index ec689cb515d6..8859fa605a42 100644
--- a/pkgs/development/tools/rust/cargo-hf2/default.nix
+++ b/pkgs/development/tools/rust/cargo-hf2/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ libusb1 ] ++ lib.optionals stdenv.isDarwin [ AppKit ];
+  buildInputs = [ libusb1 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ];
 
   meta = with lib; {
     description = "Cargo Subcommand for Microsoft HID Flashing Library for UF2 Bootloaders";
diff --git a/pkgs/development/tools/rust/cargo-info/default.nix b/pkgs/development/tools/rust/cargo-info/default.nix
index 096ef8f764e9..f6aa12d2c5a7 100644
--- a/pkgs/development/tools/rust/cargo-info/default.nix
+++ b/pkgs/development/tools/rust/cargo-info/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-inspect/default.nix b/pkgs/development/tools/rust/cargo-inspect/default.nix
index e8b1443dd009..b1126b42f248 100644
--- a/pkgs/development/tools/rust/cargo-inspect/default.nix
+++ b/pkgs/development/tools/rust/cargo-inspect/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
     sha256 = "026vc8d0jkc1d7dlp3ldmwks7svpvqzl0k5niri8a12cl5w5b9hj";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   cargoHash = "sha256-+cYbejdZOmvaX8jdf1llAvaTefPVtIOl1fqGm5tHMRk=";
 
diff --git a/pkgs/development/tools/rust/cargo-lambda/default.nix b/pkgs/development/tools/rust/cargo-lambda/default.nix
index 75127127eae2..b63c9e43b415 100644
--- a/pkgs/development/tools/rust/cargo-lambda/default.nix
+++ b/pkgs/development/tools/rust/cargo-lambda/default.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       curl
       CoreServices
       Security
diff --git a/pkgs/development/tools/rust/cargo-leptos/default.nix b/pkgs/development/tools/rust/cargo-leptos/default.nix
index 2beed790ed69..5a14ac34252d 100644
--- a/pkgs/development/tools/rust/cargo-leptos/default.nix
+++ b/pkgs/development/tools/rust/cargo-leptos/default.nix
@@ -10,7 +10,7 @@ let
     SystemConfiguration
     Security;
   inherit (lib) optionals;
-  inherit (stdenv) isDarwin;
+  inherit (stdenv.hostPlatform) isDarwin;
 in
 rustPlatform.buildRustPackage rec {
   pname = "cargo-leptos";
diff --git a/pkgs/development/tools/rust/cargo-limit/default.nix b/pkgs/development/tools/rust/cargo-limit/default.nix
index 958bfeb447c3..7132ebff02ad 100644
--- a/pkgs/development/tools/rust/cargo-limit/default.nix
+++ b/pkgs/development/tools/rust/cargo-limit/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-dwqbG0UFeUQHa0K98ebHfjbcQuQOhK2s6ZxAT6r0cik=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   passthru = {
     updateScript = nix-update-script { };
diff --git a/pkgs/development/tools/rust/cargo-llvm-cov/default.nix b/pkgs/development/tools/rust/cargo-llvm-cov/default.nix
index 387460a0dd16..2672d165b26d 100644
--- a/pkgs/development/tools/rust/cargo-llvm-cov/default.nix
+++ b/pkgs/development/tools/rust/cargo-llvm-cov/default.nix
@@ -94,6 +94,6 @@ rustPlatform.buildRustPackage {
     maintainers = with lib.maintainers; [ wucke13 matthiasbeyer CobaltCause ];
 
     # The profiler runtime is (currently) disabled on non-Linux platforms
-    broken = !(stdenv.isLinux && !stdenv.targetPlatform.isRedox);
+    broken = !(stdenv.hostPlatform.isLinux && !stdenv.targetPlatform.isRedox);
   };
 }
diff --git a/pkgs/development/tools/rust/cargo-local-registry/default.nix b/pkgs/development/tools/rust/cargo-local-registry/default.nix
index 76f26decd868..7e6c0c917a73 100644
--- a/pkgs/development/tools/rust/cargo-local-registry/default.nix
+++ b/pkgs/development/tools/rust/cargo-local-registry/default.nix
@@ -33,9 +33,9 @@ rustPlatform.buildRustPackage rec {
     libgit2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     darwin.apple_sdk.frameworks.CoreFoundation
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-mobile2/default.nix b/pkgs/development/tools/rust/cargo-mobile2/default.nix
index 28c94f9a0f02..17ba08923b1f 100644
--- a/pkgs/development/tools/rust/cargo-mobile2/default.nix
+++ b/pkgs/development/tools/rust/cargo-mobile2/default.nix
@@ -35,7 +35,7 @@ rustPlatform.buildRustPackage {
     export CARGO_HOME=$out/share/
   '';
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
   nativeBuildInputs = [ pkg-config git makeWrapper ];
 
   preFixup = ''
diff --git a/pkgs/development/tools/rust/cargo-modules/default.nix b/pkgs/development/tools/rust/cargo-modules/default.nix
index 3787173f0fff..da236481f45d 100644
--- a/pkgs/development/tools/rust/cargo-modules/default.nix
+++ b/pkgs/development/tools/rust/cargo-modules/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-j3AYWKq7SrlNlsY7A80iwcWKW8wi6hx0U9UwDIQkXZs=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-msrv/default.nix b/pkgs/development/tools/rust/cargo-msrv/default.nix
index e8b23c70bd11..2db732560df1 100644
--- a/pkgs/development/tools/rust/cargo-msrv/default.nix
+++ b/pkgs/development/tools/rust/cargo-msrv/default.nix
@@ -34,7 +34,7 @@ rustPlatform.buildRustPackage rec {
   # Integration tests fail
   doCheck = false;
 
-  buildInputs = if stdenv.isDarwin
+  buildInputs = if stdenv.hostPlatform.isDarwin
     then [ libiconv Security ]
     else [ openssl ];
 
diff --git a/pkgs/development/tools/rust/cargo-mutants/default.nix b/pkgs/development/tools/rust/cargo-mutants/default.nix
index 742000213879..e5e7fcde55cb 100644
--- a/pkgs/development/tools/rust/cargo-mutants/default.nix
+++ b/pkgs/development/tools/rust/cargo-mutants/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-VRkhDgKunSUOz2/U4oC2t0YrDh5l48z4luevMazfj6o=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-ndk/default.nix b/pkgs/development/tools/rust/cargo-ndk/default.nix
index b1068127483b..1397ffc3742c 100644
--- a/pkgs/development/tools/rust/cargo-ndk/default.nix
+++ b/pkgs/development/tools/rust/cargo-ndk/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-sIKan8LnGv4sGVrGOUOKSD3R4fNRu5yBFATm5MWDTSU=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreGraphics
     Foundation
   ];
diff --git a/pkgs/development/tools/rust/cargo-outdated/default.nix b/pkgs/development/tools/rust/cargo-outdated/default.nix
index 64b7c4a77656..0c575c604cf8 100644
--- a/pkgs/development/tools/rust/cargo-outdated/default.nix
+++ b/pkgs/development/tools/rust/cargo-outdated/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     curl
     CoreFoundation
     CoreServices
diff --git a/pkgs/development/tools/rust/cargo-pgrx/buildPgrxExtension.nix b/pkgs/development/tools/rust/cargo-pgrx/buildPgrxExtension.nix
index 5c49d5bd2be7..89293ab62ef8 100644
--- a/pkgs/development/tools/rust/cargo-pgrx/buildPgrxExtension.nix
+++ b/pkgs/development/tools/rust/cargo-pgrx/buildPgrxExtension.nix
@@ -102,7 +102,7 @@ let
   # so we don't accidentally `(rustPlatform.buildRustPackage argsForBuildRustPackage) // { ... }` because
   # we forgot parentheses
   finalArgs = argsForBuildRustPackage // {
-    buildInputs = (args.buildInputs or [ ]) ++ lib.optionals stdenv.isDarwin [ Security ];
+    buildInputs = (args.buildInputs or [ ]) ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
     nativeBuildInputs = (args.nativeBuildInputs or [ ]) ++ [
       cargo-pgrx
@@ -119,7 +119,7 @@ let
       ${maybeEnterBuildAndTestSubdir}
 
       PGRX_BUILD_FLAGS="--frozen -j $NIX_BUILD_CORES ${builtins.concatStringsSep " " cargoBuildFlags}" \
-      ${lib.optionalString stdenv.isDarwin ''RUSTFLAGS="''${RUSTFLAGS:+''${RUSTFLAGS} }-Clink-args=-Wl,-undefined,dynamic_lookup"''} \
+      ${lib.optionalString stdenv.hostPlatform.isDarwin ''RUSTFLAGS="''${RUSTFLAGS:+''${RUSTFLAGS} }-Clink-args=-Wl,-undefined,dynamic_lookup"''} \
       cargo pgrx package \
         --pg-config ${lib.getDev postgresql}/bin/pg_config \
         ${maybeDebugFlag} \
diff --git a/pkgs/development/tools/rust/cargo-pgrx/default.nix b/pkgs/development/tools/rust/cargo-pgrx/default.nix
index ca7014cf1e3a..93010928ddc6 100644
--- a/pkgs/development/tools/rust/cargo-pgrx/default.nix
+++ b/pkgs/development/tools/rust/cargo-pgrx/default.nix
@@ -24,13 +24,13 @@ let
 
       inherit cargoHash;
 
-      nativeBuildInputs = lib.optionals stdenv.isLinux [
+      nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
         pkg-config
       ];
 
-      buildInputs = lib.optionals stdenv.isLinux [
+      buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
         openssl
-      ] ++ lib.optionals stdenv.isDarwin [
+      ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
         darwin.apple_sdk.frameworks.Security
       ];
 
diff --git a/pkgs/development/tools/rust/cargo-public-api/default.nix b/pkgs/development/tools/rust/cargo-public-api/default.nix
index d7abd37316c1..8bc991d0bd4c 100644
--- a/pkgs/development/tools/rust/cargo-public-api/default.nix
+++ b/pkgs/development/tools/rust/cargo-public-api/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ curl openssl ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   # Tests fail
   doCheck = false;
diff --git a/pkgs/development/tools/rust/cargo-release/default.nix b/pkgs/development/tools/rust/cargo-release/default.nix
index 8f9abcb28da2..c818582433a2 100644
--- a/pkgs/development/tools/rust/cargo-release/default.nix
+++ b/pkgs/development/tools/rust/cargo-release/default.nix
@@ -35,7 +35,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     libgit2
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     curl
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/development/tools/rust/cargo-risczero/default.nix b/pkgs/development/tools/rust/cargo-risczero/default.nix
index ead0103d3f65..bf61c32cf778 100644
--- a/pkgs/development/tools/rust/cargo-risczero/default.nix
+++ b/pkgs/development/tools/rust/cargo-risczero/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-semver-checks/default.nix b/pkgs/development/tools/rust/cargo-semver-checks/default.nix
index a219cbd41d1d..ad2e4b7f337e 100644
--- a/pkgs/development/tools/rust/cargo-semver-checks/default.nix
+++ b/pkgs/development/tools/rust/cargo-semver-checks/default.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-shuttle/default.nix b/pkgs/development/tools/rust/cargo-shuttle/default.nix
index 61a0bf1c6c06..57d61041857a 100644
--- a/pkgs/development/tools/rust/cargo-shuttle/default.nix
+++ b/pkgs/development/tools/rust/cargo-shuttle/default.nix
@@ -37,7 +37,7 @@ rustPlatform.buildRustPackage rec {
       openssl
       zlib
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreServices
       darwin.apple_sdk.frameworks.SystemConfiguration
     ];
diff --git a/pkgs/development/tools/rust/cargo-spellcheck/default.nix b/pkgs/development/tools/rust/cargo-spellcheck/default.nix
index aae0be337614..6d6bfa5ae258 100644
--- a/pkgs/development/tools/rust/cargo-spellcheck/default.nix
+++ b/pkgs/development/tools/rust/cargo-spellcheck/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ rustPlatform.bindgenHook ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
   preCheck = "HOME=$(mktemp -d)";
 
diff --git a/pkgs/development/tools/rust/cargo-supply-chain/default.nix b/pkgs/development/tools/rust/cargo-supply-chain/default.nix
index 395a48498237..073500a16e2f 100644
--- a/pkgs/development/tools/rust/cargo-supply-chain/default.nix
+++ b/pkgs/development/tools/rust/cargo-supply-chain/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-Fx1C4X0dQqePqLa+X+4ZDrIMFKBQ6J50nBApYXcGbFM=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/rust/cargo-tally/default.nix b/pkgs/development/tools/rust/cargo-tally/default.nix
index 828f50e467c3..b85112f75538 100644
--- a/pkgs/development/tools/rust/cargo-tally/default.nix
+++ b/pkgs/development/tools/rust/cargo-tally/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-Dkz3QJchUAn4/kQsmQcSfxVrRdiCA2qJSOTszfvE4No=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk_11_0.frameworks; [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk_11_0.frameworks; [
     DiskArbitration
     Foundation
     IOKit
diff --git a/pkgs/development/tools/rust/cargo-tauri/default.nix b/pkgs/development/tools/rust/cargo-tauri/default.nix
index 1dcc79fb4b75..7ae69fa55283 100644
--- a/pkgs/development/tools/rust/cargo-tauri/default.nix
+++ b/pkgs/development/tools/rust/cargo-tauri/default.nix
@@ -35,14 +35,14 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       glibc
       libsoup
       cairo
       gtk3
       webkitgtk
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreServices
       Security
       SystemConfiguration
diff --git a/pkgs/development/tools/rust/cargo-udeps/default.nix b/pkgs/development/tools/rust/cargo-udeps/default.nix
index bc72b8a6a757..a41e2616ba89 100644
--- a/pkgs/development/tools/rust/cargo-udeps/default.nix
+++ b/pkgs/development/tools/rust/cargo-udeps/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
 
   # TODO figure out how to use provided curl instead of compiling curl from curl-sys
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ CoreServices Security libiconv SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices Security libiconv SystemConfiguration ];
 
   # Requires network access
   doCheck = false;
diff --git a/pkgs/development/tools/rust/cargo-ui/default.nix b/pkgs/development/tools/rust/cargo-ui/default.nix
index 01578e497deb..fedd72458c8e 100644
--- a/pkgs/development/tools/rust/cargo-ui/default.nix
+++ b/pkgs/development/tools/rust/cargo-ui/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     libgit2
     openssl
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     expat
     fontconfig
     libGL
@@ -39,11 +39,11 @@ rustPlatform.buildRustPackage rec {
     xorg.libXi
     xorg.libXrandr
     xorg.libxcb
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
   ];
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf $out/bin/cargo-ui \
       --add-rpath ${lib.makeLibraryPath [ fontconfig libGL ]}
   '';
diff --git a/pkgs/development/tools/rust/cargo-unused-features/default.nix b/pkgs/development/tools/rust/cargo-unused-features/default.nix
index 32fae29d903a..cf1fd1deb398 100644
--- a/pkgs/development/tools/rust/cargo-unused-features/default.nix
+++ b/pkgs/development/tools/rust/cargo-unused-features/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
     curl
     libgit2
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/development/tools/rust/cargo-update/default.nix b/pkgs/development/tools/rust/cargo-update/default.nix
index f2aa80920811..b98d1dd513e0 100644
--- a/pkgs/development/tools/rust/cargo-update/default.nix
+++ b/pkgs/development/tools/rust/cargo-update/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
     installShellFiles
     pkg-config
     ronn
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     curl
   ];
 
@@ -39,7 +39,7 @@ rustPlatform.buildRustPackage rec {
     libssh2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     curl
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/development/tools/rust/cargo-vet/default.nix b/pkgs/development/tools/rust/cargo-vet/default.nix
index 96822b3078d2..69c5d69d2c69 100644
--- a/pkgs/development/tools/rust/cargo-vet/default.nix
+++ b/pkgs/development/tools/rust/cargo-vet/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-M8sZzgSEMIB6pPVaE+tC18MCbwYaYpHOnhrEvm9JTso=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # the test_project tests require internet access
   checkFlags = [
diff --git a/pkgs/development/tools/rust/cargo-watch/default.nix b/pkgs/development/tools/rust/cargo-watch/default.nix
index 69c04b520b30..1033476eb976 100644
--- a/pkgs/development/tools/rust/cargo-watch/default.nix
+++ b/pkgs/development/tools/rust/cargo-watch/default.nix
@@ -19,9 +19,9 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-skUG1B6TCFEXeQSRwA6vWjXmNifk5bTR4+JESw7CZMo=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Foundation Cocoa ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Foundation Cocoa ];
 
-  NIX_LDFLAGS = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [ "-framework" "AppKit" ];
+  NIX_LDFLAGS = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [ "-framework" "AppKit" ];
 
   # `test with_cargo` tries to call cargo-watch as a cargo subcommand
   # (calling cargo-watch with command `cargo watch`)
diff --git a/pkgs/development/tools/rust/cargo-web/default.nix b/pkgs/development/tools/rust/cargo-web/default.nix
index 11f1fc6aacf0..7bbc503fd128 100644
--- a/pkgs/development/tools/rust/cargo-web/default.nix
+++ b/pkgs/development/tools/rust/cargo-web/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-apPXSG8RV9hZ+jttn4XHhgmuLQ7344SQJna7Z/fu/mA=";
 
   nativeBuildInputs = [ openssl perl pkg-config ];
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices Security ];
 
   meta = with lib; {
     description = "Cargo subcommand for the client-side Web";
diff --git a/pkgs/development/tools/rust/cargo-whatfeatures/default.nix b/pkgs/development/tools/rust/cargo-whatfeatures/default.nix
index 4e757c6402a3..42b3078f4e94 100644
--- a/pkgs/development/tools/rust/cargo-whatfeatures/default.nix
+++ b/pkgs/development/tools/rust/cargo-whatfeatures/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "Simple cargo plugin to get a list of features for a specific crate";
diff --git a/pkgs/development/tools/rust/cargo-workspaces/default.nix b/pkgs/development/tools/rust/cargo-workspaces/default.nix
index 32c4730b3940..5e0b5483e754 100644
--- a/pkgs/development/tools/rust/cargo-workspaces/default.nix
+++ b/pkgs/development/tools/rust/cargo-workspaces/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
     libssh2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/development/tools/rust/cbindgen/default.nix b/pkgs/development/tools/rust/cbindgen/default.nix
index 95dacabcf5d2..ff4cfdf9ef86 100644
--- a/pkgs/development/tools/rust/cbindgen/default.nix
+++ b/pkgs/development/tools/rust/cbindgen/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-l4FgwXdibek4BAnqjWd1rLxpEwuMNjYgvo6X3SS3fRo=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   nativeCheckInputs = [
     cmake
@@ -40,7 +40,7 @@ rustPlatform.buildRustPackage rec {
     "--skip lib_default_uses_debug_build"
     "--skip lib_explicit_debug_build"
     "--skip lib_explicit_release_build"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # WORKAROUND: test_body fails when using clang
     # https://github.com/eqrion/cbindgen/issues/628
     "--skip test_body"
diff --git a/pkgs/development/tools/rust/dioxus-cli/default.nix b/pkgs/development/tools/rust/dioxus-cli/default.nix
index 68632a1d6002..b66b99b87bd3 100644
--- a/pkgs/development/tools/rust/dioxus-cli/default.nix
+++ b/pkgs/development/tools/rust/dioxus-cli/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-shllaNdg9g6fD8qRyCKpN47keFUTu0g96MzVX4BrhXI=";
 
   nativeBuildInputs = [ pkg-config cacert ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/development/tools/rust/duckscript/default.nix b/pkgs/development/tools/rust/duckscript/default.nix
index be536194d290..dfdb3e5e008f 100644
--- a/pkgs/development/tools/rust/duckscript/default.nix
+++ b/pkgs/development/tools/rust/duckscript/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security SystemConfiguration libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration libiconv ];
 
   cargoHash = "sha256-bBqcHETEWooMgQeqPOZIK/77DdTtGq1JusBKoRj5K6w=";
 
diff --git a/pkgs/development/tools/rust/humility/default.nix b/pkgs/development/tools/rust/humility/default.nix
index a8c157f9ac4d..5486d0785233 100644
--- a/pkgs/development/tools/rust/humility/default.nix
+++ b/pkgs/development/tools/rust/humility/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
   version = "unstable-2023-11-08";
 
   nativeBuildInputs = [ pkg-config cargo-readme ];
-  buildInputs = [ libusb1 libftdi ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ libusb1 libftdi ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
   ];
 
diff --git a/pkgs/development/tools/rust/panamax/default.nix b/pkgs/development/tools/rust/panamax/default.nix
index 16d8176de4eb..3ca774d0d30f 100644
--- a/pkgs/development/tools/rust/panamax/default.nix
+++ b/pkgs/development/tools/rust/panamax/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
     libgit2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/development/tools/rust/rust-analyzer/default.nix b/pkgs/development/tools/rust/rust-analyzer/default.nix
index 6326657372c4..7fd2aafb7054 100644
--- a/pkgs/development/tools/rust/rust-analyzer/default.nix
+++ b/pkgs/development/tools/rust/rust-analyzer/default.nix
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = lib.optional useMimalloc cmake;
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     libiconv
   ];
diff --git a/pkgs/development/tools/rust/rustup-toolchain-install-master/default.nix b/pkgs/development/tools/rust/rustup-toolchain-install-master/default.nix
index d71b1e655d78..f5dacb999a68 100644
--- a/pkgs/development/tools/rust/rustup-toolchain-install-master/default.nix
+++ b/pkgs/development/tools/rust/rustup-toolchain-install-master/default.nix
@@ -41,13 +41,13 @@ rustPlatform.buildRustPackage rec {
           --subst-var libPath
       '';
     in
-    lib.optionals stdenv.isLinux [ patchelfPatch ];
+    lib.optionals stdenv.hostPlatform.isLinux [ patchelfPatch ];
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [
     openssl
     xz
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/development/tools/rust/rustup/default.nix b/pkgs/development/tools/rust/rustup/default.nix
index b59d9d08ef23..5824696a43ac 100644
--- a/pkgs/development/tools/rust/rustup/default.nix
+++ b/pkgs/development/tools/rust/rustup/default.nix
@@ -39,13 +39,13 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     (curl.override { inherit openssl; })
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [ CoreServices Security libiconv xz ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices Security libiconv xz ];
 
   buildFeatures = [ "no-self-update" ];
 
   checkFeatures = [ "test" ];
 
-  patches = lib.optionals stdenv.isLinux [
+  patches = lib.optionals stdenv.hostPlatform.isLinux [
     (runCommand "0001-dynamically-patchelf-binaries.patch"
       {
         CC = stdenv.cc;
@@ -62,7 +62,7 @@ rustPlatform.buildRustPackage rec {
 
   # Random tests fail nondeterministically on macOS.
   # TODO: Investigate this.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   # skip failing tests
   checkFlags = [
diff --git a/pkgs/development/tools/rust/rustycli/default.nix b/pkgs/development/tools/rust/rustycli/default.nix
index 09bc2e44f748..ce16743a0715 100644
--- a/pkgs/development/tools/rust/rustycli/default.nix
+++ b/pkgs/development/tools/rust/rustycli/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-WU3lgGJH6qVDI1Un3HBqg0edqiP5sobTsAIXdnjeNTU=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/rust/sqlx-cli/default.nix b/pkgs/development/tools/rust/sqlx-cli/default.nix
index ca608dafd10c..71f6b2b9ddcd 100644
--- a/pkgs/development/tools/rust/sqlx-cli/default.nix
+++ b/pkgs/development/tools/rust/sqlx-cli/default.nix
@@ -45,10 +45,10 @@ rustPlatform.buildRustPackage rec {
   ];
 
   buildInputs =
-    lib.optionals stdenv.isLinux [
+    lib.optionals stdenv.hostPlatform.isLinux [
       openssl
     ] ++
-    lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isDarwin [
       CoreFoundation
       Security
       SystemConfiguration
diff --git a/pkgs/development/tools/sauce-connect/default.nix b/pkgs/development/tools/sauce-connect/default.nix
index 562125acf068..6d3c5434e20a 100644
--- a/pkgs/development/tools/sauce-connect/default.nix
+++ b/pkgs/development/tools/sauce-connect/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ unzip ];
 
-  patchPhase = lib.optionalString stdenv.isLinux ''
+  patchPhase = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf \
       --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
       --set-rpath "$out/lib:${lib.makeLibraryPath [zlib]}" \
diff --git a/pkgs/development/tools/scenic-view/default.nix b/pkgs/development/tools/scenic-view/default.nix
index 3fc74d7e3c73..925fc8d5b29d 100644
--- a/pkgs/development/tools/scenic-view/default.nix
+++ b/pkgs/development/tools/scenic-view/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, fetchFromGitHub, openjdk, openjfx, gradle_7, makeDesktopItem, makeWrapper }:
 let
-  jdk = openjdk.override (lib.optionalAttrs stdenv.isLinux {
+  jdk = openjdk.override (lib.optionalAttrs stdenv.hostPlatform.isLinux {
     enableJavaFX = true;
     openjfx = openjfx.override { withWebKit = true; };
   });
@@ -52,7 +52,7 @@ in stdenv.mkDerivation rec {
   desktopItems = [ desktopItem ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "JavaFx application to visualize and modify the scenegraph of running JavaFx applications";
     mainProgram = "scenic-view";
     longDescription = ''
diff --git a/pkgs/development/tools/sea-orm-cli/default.nix b/pkgs/development/tools/sea-orm-cli/default.nix
index 1562780858ae..6e9df125e3bb 100644
--- a/pkgs/development/tools/sea-orm-cli/default.nix
+++ b/pkgs/development/tools/sea-orm-cli/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   cargoHash = "sha256-ZGM+Y67ycBiukgEBUq+WiA1OUCGahya591gM6CGwzMQ=";
 
diff --git a/pkgs/development/tools/selene/default.nix b/pkgs/development/tools/selene/default.nix
index 0d836fe7a24d..bcd1409b9985 100644
--- a/pkgs/development/tools/selene/default.nix
+++ b/pkgs/development/tools/selene/default.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = lib.optionals robloxSupport [
     openssl
-  ] ++ lib.optionals (robloxSupport && stdenv.isDarwin) [
+  ] ++ lib.optionals (robloxSupport && stdenv.hostPlatform.isDarwin) [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/semantic-release/default.nix b/pkgs/development/tools/semantic-release/default.nix
index 95f92919d15d..da97f7e61bb8 100644
--- a/pkgs/development/tools/semantic-release/default.nix
+++ b/pkgs/development/tools/semantic-release/default.nix
@@ -23,7 +23,7 @@ buildNpmPackage rec {
 
   nativeBuildInputs = [
     python3
-  ] ++ lib.optional stdenv.isDarwin cctools;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin cctools;
 
   # Fixes `semantic-release --version` output
   postPatch = ''
diff --git a/pkgs/development/tools/sentry-cli/default.nix b/pkgs/development/tools/sentry-cli/default.nix
index 2adcaf4dc462..52e7927bb18a 100644
--- a/pkgs/development/tools/sentry-cli/default.nix
+++ b/pkgs/development/tools/sentry-cli/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
   # Needed to get openssl-sys to use pkgconfig.
   OPENSSL_NO_VENDOR = 1;
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ CoreServices Security SystemConfiguration ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices Security SystemConfiguration ];
   nativeBuildInputs = [ installShellFiles pkg-config ];
 
   cargoHash = "sha256-fzQfU3xlRwV/GI69+sd7zz4okbNHbFAskJPgI1X0KQo=";
diff --git a/pkgs/development/tools/simavr/default.nix b/pkgs/development/tools/simavr/default.nix
index deab8539ef14..e50986dd6502 100644
--- a/pkgs/development/tools/simavr/default.nix
+++ b/pkgs/development/tools/simavr/default.nix
@@ -31,12 +31,12 @@ in stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ which pkg-config avrgcc ]
-    ++ lib.optional stdenv.isDarwin setupHookDarwin;
+    ++ lib.optional stdenv.hostPlatform.isDarwin setupHookDarwin;
   buildInputs = [ libelf libglut libGLU libGL ]
-    ++ lib.optional stdenv.isDarwin GLUT;
+    ++ lib.optional stdenv.hostPlatform.isDarwin GLUT;
 
   # remove forbidden references to $TMPDIR
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --shrink-rpath --allowed-rpath-prefixes "$NIX_STORE" "$out"/bin/*
   '';
 
diff --git a/pkgs/development/tools/skopeo/default.nix b/pkgs/development/tools/skopeo/default.nix
index 082abb488cb7..facfb6e7c56a 100644
--- a/pkgs/development/tools/skopeo/default.nix
+++ b/pkgs/development/tools/skopeo/default.nix
@@ -36,7 +36,7 @@ buildGoModule rec {
   nativeBuildInputs = [ pkg-config go-md2man installShellFiles makeWrapper ];
 
   buildInputs = [ gpgme ]
-    ++ lib.optionals stdenv.isLinux [ lvm2 btrfs-progs ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ lvm2 btrfs-progs ];
 
   buildPhase = ''
     runHook preBuild
@@ -49,7 +49,7 @@ buildGoModule rec {
     runHook preInstall
     PREFIX=${placeholder "out"} make install-binary install-completions install-docs
     install ${passthru.policy}/default-policy.json -Dt $out/etc/containers
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/skopeo \
       --prefix PATH : ${lib.makeBinPath [ fuse-overlayfs ]}
   '' + ''
diff --git a/pkgs/development/tools/spr/default.nix b/pkgs/development/tools/spr/default.nix
index 7ecd5dcfb257..d7a9b4530c63 100644
--- a/pkgs/development/tools/spr/default.nix
+++ b/pkgs/development/tools/spr/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-VQg3HDNw+L1FsFtHXnIw6dMVUxV63ZWHCxiknzsqXW8=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "Submit pull requests for individual, amendable, rebaseable commits to GitHub";
diff --git a/pkgs/development/tools/sqsh/default.nix b/pkgs/development/tools/sqsh/default.nix
index ec071f739efa..e7b0342ac697 100644
--- a/pkgs/development/tools/sqsh/default.nix
+++ b/pkgs/development/tools/sqsh/default.nix
@@ -14,7 +14,7 @@ in stdenv.mkDerivation rec {
 
   preConfigure = ''
     export SYBASE=${freetds}
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure --replace "libct.so" "libct.dylib"
   '';
 
diff --git a/pkgs/development/tools/squawk/default.nix b/pkgs/development/tools/squawk/default.nix
index 5270523caf6e..2190401c00bd 100644
--- a/pkgs/development/tools/squawk/default.nix
+++ b/pkgs/development/tools/squawk/default.nix
@@ -27,10 +27,10 @@ rustPlatform.buildRustPackage rec {
     rustPlatform.bindgenHook
   ];
 
-  buildInputs = lib.optionals (!stdenv.isDarwin) [
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libiconv
     openssl
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     CoreFoundation
     Security
   ]);
diff --git a/pkgs/development/tools/subxt/default.nix b/pkgs/development/tools/subxt/default.nix
index e239483e4a61..73907cac3731 100644
--- a/pkgs/development/tools/subxt/default.nix
+++ b/pkgs/development/tools/subxt/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
   # Needed by wabt-sys
   nativeBuildInputs = [ cmake ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/taplo/default.nix b/pkgs/development/tools/taplo/default.nix
index 77774a0d9a72..d353127070a8 100644
--- a/pkgs/development/tools/taplo/default.nix
+++ b/pkgs/development/tools/taplo/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/development/tools/tarmac/default.nix b/pkgs/development/tools/tarmac/default.nix
index 34471106d73a..a2b03fa93cbd 100644
--- a/pkgs/development/tools/tarmac/default.nix
+++ b/pkgs/development/tools/tarmac/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/development/tools/teller/default.nix b/pkgs/development/tools/teller/default.nix
index 16e44c4637c6..21eb39d6558a 100644
--- a/pkgs/development/tools/teller/default.nix
+++ b/pkgs/development/tools/teller/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
 
   doCheck = false;
 
diff --git a/pkgs/development/tools/the-way/default.nix b/pkgs/development/tools/the-way/default.nix
index 550553385828..2101512886fc 100644
--- a/pkgs/development/tools/the-way/default.nix
+++ b/pkgs/development/tools/the-way/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
   ];
 
diff --git a/pkgs/development/tools/trunk/default.nix b/pkgs/development/tools/trunk/default.nix
index 17cf053b98f1..9845c565196b 100644
--- a/pkgs/development/tools/trunk/default.nix
+++ b/pkgs/development/tools/trunk/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = if stdenv.isDarwin
+  buildInputs = if stdenv.hostPlatform.isDarwin
     then [ CoreServices SystemConfiguration ]
     else [ openssl ];
   # requires network
diff --git a/pkgs/development/tools/ttfb/default.nix b/pkgs/development/tools/ttfb/default.nix
index c2c599f32ff7..e9bc3c11bdfb 100644
--- a/pkgs/development/tools/ttfb/default.nix
+++ b/pkgs/development/tools/ttfb/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-Cdup65w31wF1RZu0g4/msHfLESrNTcuCU5kxkk0gnW8=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/development/tools/vagrant/default.nix b/pkgs/development/tools/vagrant/default.nix
index 064f1cf6baaa..6eb3ceca77aa 100644
--- a/pkgs/development/tools/vagrant/default.nix
+++ b/pkgs/development/tools/vagrant/default.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, fetchurl, buildRubyGem, bundlerEnv, ruby, libarchive
-, libguestfs, qemu, writeText, withLibvirt ? stdenv.isLinux
+, libguestfs, qemu, writeText, withLibvirt ? stdenv.hostPlatform.isLinux
 , openssl
 }:
 
diff --git a/pkgs/development/tools/viceroy/default.nix b/pkgs/development/tools/viceroy/default.nix
index 16282c7f7dd9..34c547a461fe 100644
--- a/pkgs/development/tools/viceroy/default.nix
+++ b/pkgs/development/tools/viceroy/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-0jED0Ju7ojqDxfEjZKmWuCfGR830/gJF5p+QtcVajIY=";
   };
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   cargoHash = "sha256-rSZe/MrJlbB0oaAsKg38mEnS3pqe9Rk4/aoRuLlOUFc=";
 
diff --git a/pkgs/development/tools/volta/default.nix b/pkgs/development/tools/volta/default.nix
index 15c9c493b797..c49145e0a9d6 100644
--- a/pkgs/development/tools/volta/default.nix
+++ b/pkgs/development/tools/volta/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   buildInputs = [ installShellFiles ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security libiconv ];
 
   HOME = "$TMPDIR";
 
diff --git a/pkgs/development/tools/wails/default.nix b/pkgs/development/tools/wails/default.nix
index 8988424d7738..de73c6b63764 100644
--- a/pkgs/development/tools/wails/default.nix
+++ b/pkgs/development/tools/wails/default.nix
@@ -46,7 +46,7 @@ buildGoModule rec {
     go
     stdenv.cc
     nodejs
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     gtk3
     webkitgtk
   ];
@@ -60,7 +60,7 @@ buildGoModule rec {
   postFixup = ''
     wrapProgram $out/bin/wails \
       --prefix PATH : ${lib.makeBinPath [ pkg-config go stdenv.cc nodejs ]} \
-      --prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath (lib.optionals stdenv.isLinux [ gtk3 webkitgtk ])}" \
+      --prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath (lib.optionals stdenv.hostPlatform.isLinux [ gtk3 webkitgtk ])}" \
       --set PKG_CONFIG_PATH "$PKG_CONFIG_PATH" \
       --set CGO_LDFLAGS "-L${lib.makeLibraryPath [ zlib ]}"
   '';
diff --git a/pkgs/development/tools/wasm-pack/default.nix b/pkgs/development/tools/wasm-pack/default.nix
index 305a4e666c42..42f59dfd8403 100644
--- a/pkgs/development/tools/wasm-pack/default.nix
+++ b/pkgs/development/tools/wasm-pack/default.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
     pkg-config
   ];
 
-  buildInputs = lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security ++ [ zstd ];
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security ++ [ zstd ];
 
   # Most tests rely on external resources and build artifacts.
   # Disabling check here to work with build sandboxing.
diff --git a/pkgs/development/tools/wasmedge/default.nix b/pkgs/development/tools/wasmedge/default.nix
index 938fcba2da2e..3a6f256339ac 100644
--- a/pkgs/development/tools/wasmedge/default.nix
+++ b/pkgs/development/tools/wasmedge/default.nix
@@ -33,13 +33,13 @@ stdenv.mkDerivation (finalAttrs: {
     llvmPackages.llvm
     libxml2
     libffi
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Foundation
   ];
 
   cmakeFlags = [
     "-DWASMEDGE_BUILD_TESTS=OFF" # Tests are downloaded using git
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DWASMEDGE_FORCE_DISABLE_LTO=ON"
   ];
 
diff --git a/pkgs/development/tools/watchman/default.nix b/pkgs/development/tools/watchman/default.nix
index b60872dce673..aa915d89c7fa 100644
--- a/pkgs/development/tools/watchman/default.nix
+++ b/pkgs/development/tools/watchman/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     "-DENABLE_EDEN_SUPPORT=NO" # requires sapling (formerly known as eden), which is not packaged in nixpkgs
     "-DWATCHMAN_STATE_DIR=${stateDir}"
     "-DWATCHMAN_VERSION_OVERRIDE=${version}"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.14" # For aligned allocation
   ];
 
@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
     lz4
     zstd
     libiconv
-  ] ++ lib.optionals stdenv.isDarwin [ CoreServices ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   cargoRoot = "watchman/cli";
 
diff --git a/pkgs/development/tools/winhelpcgi/default.nix b/pkgs/development/tools/winhelpcgi/default.nix
index c2d4dd31bf1c..51383b5b792d 100644
--- a/pkgs/development/tools/winhelpcgi/default.nix
+++ b/pkgs/development/tools/winhelpcgi/default.nix
@@ -19,6 +19,6 @@
     license = lib.licenses.gpl2Only;
     maintainers = [ lib.maintainers.shlevy ];
     platforms = lib.platforms.linux;
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/development/tools/worker-build/default.nix b/pkgs/development/tools/worker-build/default.nix
index fd7c1e378603..cc48ae31d39b 100644
--- a/pkgs/development/tools/worker-build/default.nix
+++ b/pkgs/development/tools/worker-build/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   buildAndTestSubdir = "worker-build";
 
diff --git a/pkgs/development/tools/wrangler_1/default.nix b/pkgs/development/tools/wrangler_1/default.nix
index 7fc33c2dda6d..570092b7ee48 100644
--- a/pkgs/development/tools/wrangler_1/default.nix
+++ b/pkgs/development/tools/wrangler_1/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ curl CoreFoundation CoreServices Security libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ curl CoreFoundation CoreServices Security libiconv ];
 
   OPENSSL_NO_VENDOR = 1;
 
diff --git a/pkgs/development/tools/wxformbuilder/default.nix b/pkgs/development/tools/wxformbuilder/default.nix
index ad31bcad0d7b..7a5d7a933216 100644
--- a/pkgs/development/tools/wxformbuilder/default.nix
+++ b/pkgs/development/tools/wxformbuilder/default.nix
@@ -37,21 +37,21 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [
     cmake
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.sigtool
     makeWrapper
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     shared-mime-info
   ];
 
   buildInputs = [
     boost
     wxGTK32
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
   ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications,bin}
     mv $out/wxFormBuilder.app $out/Applications
     makeWrapper $out/Applications/wxFormBuilder.app/Contents/MacOS/wxFormBuilder $out/bin/wxformbuilder
diff --git a/pkgs/development/tools/xcbuild/default.nix b/pkgs/development/tools/xcbuild/default.nix
index 8dc527c0e1f5..e30700ca2025 100644
--- a/pkgs/development/tools/xcbuild/default.nix
+++ b/pkgs/development/tools/xcbuild/default.nix
@@ -38,7 +38,7 @@ in stdenv.mkDerivation {
     cp -r --no-preserve=all ${linenoise} ThirdParty/linenoise
   '';
 
-  postPatch = lib.optionalString (!stdenv.isDarwin) ''
+  postPatch = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     # Fix build on gcc-13 due to missing includes
     sed -e '1i #include <cstdint>' -i \
       Libraries/libutil/Headers/libutil/Permissions.h \
@@ -48,7 +48,7 @@ in stdenv.mkDerivation {
     # Avoid a glibc >= 2.25 deprecation warning that gets fatal via -Werror.
     sed 1i'#include <sys/sysmacros.h>' \
       -i Libraries/xcassets/Headers/xcassets/Slot/SystemVersion.h
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Apple Open Sourced LZFSE, but not libcompression, and it isn't
     # part of an impure framework we can add
     substituteInPlace Libraries/libcar/Sources/Rendition.cpp \
@@ -68,7 +68,7 @@ in stdenv.mkDerivation {
 
   nativeBuildInputs = [ cmake ninja ];
   buildInputs = [ zlib libxml2 libpng ]
-    ++ lib.optionals stdenv.isDarwin [ CoreServices CoreGraphics ImageIO ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices CoreGraphics ImageIO ];
 
   meta = with lib; {
     description = "Xcode-compatible build tool";
diff --git a/pkgs/development/tools/xcbuild/platforms.nix b/pkgs/development/tools/xcbuild/platforms.nix
index 0108ac8ef697..333e5471b976 100644
--- a/pkgs/development/tools/xcbuild/platforms.nix
+++ b/pkgs/development/tools/xcbuild/platforms.nix
@@ -48,7 +48,7 @@ let
       ArchitectureSetting = "ARCHS_STANDARD_64_BIT";
     }
     {
-      Identifier = if stdenv.isAarch64 then "arm64" else "x86_64";
+      Identifier = if stdenv.hostPlatform.isAarch64 then "arm64" else "x86_64";
       Type = "Architecture";
       Name = "Apple Silicon or Intel 64-bit";
     }
diff --git a/pkgs/development/tools/xcbuild/toolchains.nix b/pkgs/development/tools/xcbuild/toolchains.nix
index a5e8ed28ce1e..2da12ba7cbcb 100644
--- a/pkgs/development/tools/xcbuild/toolchains.nix
+++ b/pkgs/development/tools/xcbuild/toolchains.nix
@@ -59,7 +59,7 @@ runCommand "Toolchains" {} (''
   ln -s ${buildPackages.gperf}/bin/gperf $toolchain/bin/gperf
   ln -s ${buildPackages.indent}/bin/indent $toolchain/bin/indent
   ln -s ${buildPackages.ctags}/bin/ctags $toolchain/bin/ctags
-'' + optionalString stdenv.isDarwin ''
+'' + optionalString stdenv.hostPlatform.isDarwin ''
   for bin in ${getBin buildPackages.cctools}/bin/*; do
     if ! [ -e "$toolchain/bin/$(basename $bin)" ]; then
       ln -s $bin $toolchain/bin
diff --git a/pkgs/development/web/boa/default.nix b/pkgs/development/web/boa/default.nix
index 122e0df08aa4..9f695ff7d793 100644
--- a/pkgs/development/web/boa/default.nix
+++ b/pkgs/development/web/boa/default.nix
@@ -38,7 +38,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ bzip2 openssl zstd ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreFoundation
       darwin.apple_sdk.frameworks.Security
     ];
diff --git a/pkgs/development/web/bun/default.nix b/pkgs/development/web/bun/default.nix
index c3ff06006b37..6e187aa3fe03 100644
--- a/pkgs/development/web/bun/default.nix
+++ b/pkgs/development/web/bun/default.nix
@@ -18,7 +18,7 @@ stdenvNoCC.mkDerivation rec {
   src = passthru.sources.${stdenvNoCC.hostPlatform.system} or (throw "Unsupported system: ${stdenvNoCC.hostPlatform.system}");
 
   strictDeps = true;
-  nativeBuildInputs = [ unzip installShellFiles ] ++ lib.optionals stdenvNoCC.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = [ unzip installShellFiles ] ++ lib.optionals stdenvNoCC.hostPlatform.isLinux [ autoPatchelfHook ];
   buildInputs = [ openssl ];
 
   dontConfigure = true;
diff --git a/pkgs/development/web/deno/default.nix b/pkgs/development/web/deno/default.nix
index c51adf84f6ee..1dcb7fde0136 100644
--- a/pkgs/development/web/deno/default.nix
+++ b/pkgs/development/web/deno/default.nix
@@ -39,7 +39,7 @@ rustPlatform.buildRustPackage rec {
     protobuf
     installShellFiles
   ];
-  buildInputs = lib.optionals stdenv.isDarwin (
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
     [ libiconv darwin.libobjc ]
     ++ (with darwin.apple_sdk_11_0.frameworks; [
       Security
diff --git a/pkgs/development/web/edge-runtime/default.nix b/pkgs/development/web/edge-runtime/default.nix
index 7a51944a4ff3..891c4ca303ca 100644
--- a/pkgs/development/web/edge-runtime/default.nix
+++ b/pkgs/development/web/edge-runtime/default.nix
@@ -33,8 +33,8 @@ rustPlatform.buildRustPackage {
 
   nativeBuildInputs = [ pkg-config rustPlatform.bindgenHook ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Security CoreFoundation SystemConfiguration ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Security CoreFoundation SystemConfiguration ]);
 
   # The v8 package will try to download a `librusty_v8.a` release at build time to our read-only filesystem
   # To avoid this we pre-download the file and export it via RUSTY_V8_ARCHIVE
diff --git a/pkgs/development/web/insomnia/default.nix b/pkgs/development/web/insomnia/default.nix
index 9317dbe8f4e9..9b7e05000075 100644
--- a/pkgs/development/web/insomnia/default.nix
+++ b/pkgs/development/web/insomnia/default.nix
@@ -29,7 +29,7 @@ let
     maintainers = with maintainers; [ markus1189 kashw2 DataHearth ];
   };
 in
-if stdenv.isDarwin then stdenv.mkDerivation {
+if stdenv.hostPlatform.isDarwin then stdenv.mkDerivation {
   inherit pname version src meta;
     sourceRoot = ".";
 
diff --git a/pkgs/development/web/kcgi/default.nix b/pkgs/development/web/kcgi/default.nix
index 84bfc654c773..7732ce9f4822 100644
--- a/pkgs/development/web/kcgi/default.nix
+++ b/pkgs/development/web/kcgi/default.nix
@@ -16,14 +16,14 @@ stdenv.mkDerivation rec {
   '';
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ ] ++ lib.optionals stdenv.isLinux [ libbsd ] ;
+  buildInputs = [ ] ++ lib.optionals stdenv.hostPlatform.isLinux [ libbsd ] ;
 
   dontAddPrefix = true;
 
   installFlags = [ "DESTDIR=$(out)" ];
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
+    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
     homepage = "https://kristaps.bsd.lv/kcgi";
     description = "Minimal CGI and FastCGI library for C/C++";
     license = licenses.isc;
diff --git a/pkgs/development/web/netlify-cli/composition.nix b/pkgs/development/web/netlify-cli/composition.nix
index 2e54104d7dce..4bd736ddc723 100644
--- a/pkgs/development/web/netlify-cli/composition.nix
+++ b/pkgs/development/web/netlify-cli/composition.nix
@@ -8,7 +8,7 @@ let
   nodeEnv = import ./node-env.nix {
     inherit (pkgs) stdenv lib python2 runCommand writeTextFile writeShellScript;
     inherit pkgs nodejs;
-    libtool = if pkgs.stdenv.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
+    libtool = if pkgs.stdenv.hostPlatform.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
   };
 in
 import ./node-packages.nix {
diff --git a/pkgs/development/web/netlify-cli/node-env.nix b/pkgs/development/web/netlify-cli/node-env.nix
index bc1e36628ac8..eb94495aeba3 100644
--- a/pkgs/development/web/netlify-cli/node-env.nix
+++ b/pkgs/development/web/netlify-cli/node-env.nix
@@ -499,8 +499,8 @@ let
     stdenv.mkDerivation ({
       name = "${name}${if version == null then "" else "-${version}"}";
       buildInputs = [ tarWrapper python nodejs ]
-        ++ lib.optional (stdenv.isLinux) utillinux
-        ++ lib.optional (stdenv.isDarwin) libtool
+        ++ lib.optional (stdenv.hostPlatform.isLinux) utillinux
+        ++ lib.optional (stdenv.hostPlatform.isDarwin) libtool
         ++ buildInputs;
 
       inherit nodejs;
@@ -591,8 +591,8 @@ let
         name = "node-dependencies-${name}${if version == null then "" else "-${version}"}";
 
         buildInputs = [ tarWrapper python nodejs ]
-          ++ lib.optional (stdenv.isLinux) utillinux
-          ++ lib.optional (stdenv.isDarwin) libtool
+          ++ lib.optional (stdenv.hostPlatform.isLinux) utillinux
+          ++ lib.optional (stdenv.hostPlatform.isDarwin) libtool
           ++ buildInputs;
 
         inherit dontStrip; # Stripping may fail a build for some package deployments
@@ -662,7 +662,7 @@ let
     stdenv.mkDerivation ({
       name = "node-shell-${name}${if version == null then "" else "-${version}"}";
 
-      buildInputs = [ python nodejs ] ++ lib.optional (stdenv.isLinux) utillinux ++ buildInputs;
+      buildInputs = [ python nodejs ] ++ lib.optional (stdenv.hostPlatform.isLinux) utillinux ++ buildInputs;
       buildCommand = ''
         mkdir -p $out/bin
         cat > $out/bin/shell <<EOF
diff --git a/pkgs/development/web/netlify-cli/test.nix b/pkgs/development/web/netlify-cli/test.nix
index d25c6c48936b..5acd4f1046d5 100644
--- a/pkgs/development/web/netlify-cli/test.nix
+++ b/pkgs/development/web/netlify-cli/test.nix
@@ -11,7 +11,7 @@ runCommand "netlify-cli-test" {
   nativeBuildInputs = [
     netlify-cli
     curl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.ps
   ];
   meta.timeout = 600;
diff --git a/pkgs/development/web/postman/default.nix b/pkgs/development/web/postman/default.nix
index f9684f64feeb..ae2ea6f86230 100644
--- a/pkgs/development/web/postman/default.nix
+++ b/pkgs/development/web/postman/default.nix
@@ -14,6 +14,6 @@ let
 
 in
 
-if stdenvNoCC.isDarwin
+if stdenvNoCC.hostPlatform.isDarwin
 then callPackage ./darwin.nix { inherit pname version meta; }
 else callPackage ./linux.nix { inherit pname version meta; }
diff --git a/pkgs/games/7kaa/default.nix b/pkgs/games/7kaa/default.nix
index e28eca772aa9..2dd4d6722153 100644
--- a/pkgs/games/7kaa/default.nix
+++ b/pkgs/games/7kaa/default.nix
@@ -54,7 +54,7 @@ gccStdenv.mkDerivation (finalAttrs: {
     autoupdate
   '';
 
-  hardeningDisable = lib.optionals (stdenv.isAarch64 && stdenv.isDarwin) [ "stackprotector" ];
+  hardeningDisable = lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin) [ "stackprotector" ];
 
   postInstall = ''
     mkdir $out/share/7kaa/MUSIC
diff --git a/pkgs/games/abuse/default.nix b/pkgs/games/abuse/default.nix
index cd3587a244e0..6b46e61aaf1a 100644
--- a/pkgs/games/abuse/default.nix
+++ b/pkgs/games/abuse/default.nix
@@ -59,6 +59,6 @@ stdenv.mkDerivation (finalAttrs: {
     # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=648272
     maintainers = with lib.maintainers; [ iblech ];
     platforms   = lib.platforms.unix;
-    broken      = stdenv.isDarwin;
+    broken      = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/games/anki/bin.nix b/pkgs/games/anki/bin.nix
index a75cc801257e..8daf97caf56b 100644
--- a/pkgs/games/anki/bin.nix
+++ b/pkgs/games/anki/bin.nix
@@ -115,13 +115,13 @@ let
   );
 in
 
-if stdenv.isLinux then
+if stdenv.hostPlatform.isLinux then
   fhsEnvAnki
 else
   stdenv.mkDerivation {
     inherit pname version passthru;
 
-    src = if stdenv.isAarch64 then sources.darwin-aarch64 else sources.darwin-x86_64;
+    src = if stdenv.hostPlatform.isAarch64 then sources.darwin-aarch64 else sources.darwin-x86_64;
 
     nativeBuildInputs = [ undmg ];
     sourceRoot = ".";
diff --git a/pkgs/games/anki/default.nix b/pkgs/games/anki/default.nix
index 76c23365f400..d9a4984d3d79 100644
--- a/pkgs/games/anki/default.nix
+++ b/pkgs/games/anki/default.nix
@@ -152,12 +152,12 @@ python3.pkgs.buildPythonApplication {
     qt6.wrapQtAppsHook
     rsync
     rustPlatform.cargoSetupHook
-  ] ++ lib.optional stdenv.isDarwin swift;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin swift;
 
   buildInputs = [
     qt6.qtbase
     qt6.qtsvg
-  ] ++ lib.optional stdenv.isLinux qt6.qtwayland;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux qt6.qtwayland;
 
   propagatedBuildInputs =
     with python3.pkgs;
@@ -213,7 +213,7 @@ python3.pkgs.buildPythonApplication {
       wrapt
       zipp
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       AVKit
       CoreAudio
     ];
@@ -226,7 +226,7 @@ python3.pkgs.buildPythonApplication {
 
   # tests fail with to many open files
   # TODO: verify if this is still true (I can't, no mac)
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkFlags = [
     # these two tests are flaky, see https://github.com/ankitects/anki/issues/3353
@@ -344,6 +344,6 @@ python3.pkgs.buildPythonApplication {
       oxij
     ];
     # Reported to crash at launch on darwin (as of 2.1.65)
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/games/anki/sync-server.nix b/pkgs/games/anki/sync-server.nix
index 8dc73e405afd..0b351ae3ffad 100644
--- a/pkgs/games/anki/sync-server.nix
+++ b/pkgs/games/anki/sync-server.nix
@@ -34,7 +34,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/games/arx-libertatis/default.nix b/pkgs/games/arx-libertatis/default.nix
index 334219a28901..9dbe2ce7a7df 100644
--- a/pkgs/games/arx-libertatis/default.nix
+++ b/pkgs/games/arx-libertatis/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchFromGitHub, cmake, zlib, boost
 , openal, glm, freetype, libGLU, SDL2, libepoxy
 , dejavu_fonts, inkscape, optipng, imagemagick
-, withCrashReporter ? !stdenv.isDarwin
+, withCrashReporter ? !stdenv.hostPlatform.isDarwin
 ,   qtbase ? null
 ,   wrapQtAppsHook ? null
 ,   curl ? null
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
     zlib boost openal glm
     freetype libGLU SDL2 libepoxy
   ] ++ optionals withCrashReporter [ qtbase curl ]
-    ++ optionals stdenv.isLinux    [ gdb ];
+    ++ optionals stdenv.hostPlatform.isLinux    [ gdb ];
 
   cmakeFlags = [
     "-DDATA_DIR_PREFIXES=$out/share"
diff --git a/pkgs/games/augustus/default.nix b/pkgs/games/augustus/default.nix
index bf360d2dcb94..5b94777dea69 100644
--- a/pkgs/games/augustus/default.nix
+++ b/pkgs/games/augustus/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs =
     [ cmake ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.sigtool
       libicns
       imagemagick
@@ -36,9 +36,9 @@ stdenv.mkDerivation rec {
     SDL2
     SDL2_mixer
     libpng
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Cocoa ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Cocoa ];
 
-  installPhase = lib.optionalString stdenv.isDarwin ''
+  installPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     runHook preInstall
     mkdir -p $out/Applications
     cp -r augustus.app $out/Applications/
diff --git a/pkgs/games/blightmud/default.nix b/pkgs/games/blightmud/default.nix
index ee69fc697b31..b5ebd8c279ee 100644
--- a/pkgs/games/blightmud/default.nix
+++ b/pkgs/games/blightmud/default.nix
@@ -31,10 +31,10 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config rustPlatform.bindgenHook ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals (withTTS && stdenv.isLinux) [ speechd-minimal ]
-    ++ lib.optionals stdenv.isLinux [ alsa-lib ]
-    ++ lib.optionals (withTTS && stdenv.isDarwin) [ AVFoundation AppKit ]
-    ++ lib.optionals stdenv.isDarwin [ CoreAudio AudioUnit ];
+    ++ lib.optionals (withTTS && stdenv.hostPlatform.isLinux) [ speechd-minimal ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib ]
+    ++ lib.optionals (withTTS && stdenv.hostPlatform.isDarwin) [ AVFoundation AppKit ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreAudio AudioUnit ];
 
   checkFlags =
     let
diff --git a/pkgs/games/bzflag/default.nix b/pkgs/games/bzflag/default.nix
index 400fa33e6862..9b20252feffa 100644
--- a/pkgs/games/bzflag/default.nix
+++ b/pkgs/games/bzflag/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ curl SDL2 libGLU libGL glew ncurses c-ares ]
-    ++ lib.optionals stdenv.isDarwin [ Carbon CoreServices ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon CoreServices ];
 
   meta = with lib; {
     description = "Multiplayer 3D Tank game";
diff --git a/pkgs/games/cataclysm-dda/common.nix b/pkgs/games/cataclysm-dda/common.nix
index f18d2cc37550..268f5d5256d2 100644
--- a/pkgs/games/cataclysm-dda/common.nix
+++ b/pkgs/games/cataclysm-dda/common.nix
@@ -8,10 +8,10 @@ let
   inherit (lib) optionals optionalString;
 
   cursesDeps = [ gettext ncurses ]
-    ++ optionals stdenv.isDarwin [ CoreFoundation ];
+    ++ optionals stdenv.hostPlatform.isDarwin [ CoreFoundation ];
 
   tilesDeps = [ SDL2 SDL2_image SDL2_mixer SDL2_ttf freetype ]
-    ++ optionals stdenv.isDarwin [ Cocoa ];
+    ++ optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   patchDesktopFile = ''
     substituteInPlace $out/share/applications/org.cataclysmdda.CataclysmDDA.desktop \
@@ -50,14 +50,14 @@ stdenv.mkDerivation {
     "RELEASE=1"
   ] ++ optionals tiles [
     "TILES=1" "SOUND=1"
-  ] ++ optionals stdenv.isDarwin [
+  ] ++ optionals stdenv.hostPlatform.isDarwin [
     "NATIVE=osx"
     "CLANG=1"
     "OSX_MIN=${stdenv.hostPlatform.darwinMinVersion}"
   ];
 
   postInstall = optionalString tiles
-  ( if !stdenv.isDarwin
+  ( if !stdenv.hostPlatform.isDarwin
     then patchDesktopFile
     else installMacOSAppLauncher
   );
diff --git a/pkgs/games/cdogs-sdl/default.nix b/pkgs/games/cdogs-sdl/default.nix
index 492a4216df41..7909bc476e7e 100644
--- a/pkgs/games/cdogs-sdl/default.nix
+++ b/pkgs/games/cdogs-sdl/default.nix
@@ -59,6 +59,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2Only;
     maintainers = with maintainers; [ nixinator ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/cdogs-sdl.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/cdogs-sdl.x86_64-darwin
   };
 }
diff --git a/pkgs/games/chiaki/default.nix b/pkgs/games/chiaki/default.nix
index ed1867aeffc1..6ff93f4d47e5 100644
--- a/pkgs/games/chiaki/default.nix
+++ b/pkgs/games/chiaki/default.nix
@@ -44,10 +44,10 @@ mkDerivation rec {
     qtsvg
     protobuf
     SDL2
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libevdev
     udev
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     qtmacextras
   ];
 
diff --git a/pkgs/games/corsix-th/default.nix b/pkgs/games/corsix-th/default.nix
index f55a9a20b328..8e393904b920 100644
--- a/pkgs/games/corsix-th/default.nix
+++ b/pkgs/games/corsix-th/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation(finalAttrs: {
     SDL2
     SDL2_mixer
     timidity
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     Cocoa
     CoreVideo
@@ -53,11 +53,11 @@ stdenv.mkDerivation(finalAttrs: {
 
   cmakeFlags = [ "-Wno-dev" ];
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/corsix-th \
     --set LUA_PATH "$LUA_PATH" \
     --set LUA_CPATH "$LUA_CPATH"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv $out/CorsixTH.app $out/Applications
     wrapProgram $out/Applications/CorsixTH.app/Contents/MacOS/CorsixTH \
diff --git a/pkgs/games/crawl/default.nix b/pkgs/games/crawl/default.nix
index 9fb11b07be6f..ba764d1a6a37 100644
--- a/pkgs/games/crawl/default.nix
+++ b/pkgs/games/crawl/default.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     ++ (with python3.pkgs; [ pyyaml ])
     ++ lib.optionals tileMode [ libpng SDL2 SDL2_image freetype libGLU libGL ]
     ++ lib.optional enableSound SDL2_mixer
-    ++ (lib.optionals stdenv.isDarwin (
+    ++ (lib.optionals stdenv.hostPlatform.isDarwin (
     with darwin.apple_sdk.frameworks; [
       AppKit
       AudioUnit
diff --git a/pkgs/games/cutemaze/default.nix b/pkgs/games/cutemaze/default.nix
index 658511b02dad..2a1f194f5c0d 100644
--- a/pkgs/games/cutemaze/default.nix
+++ b/pkgs/games/cutemaze/default.nix
@@ -27,11 +27,11 @@ stdenv.mkDerivation rec {
   buildInputs = [
     qtbase
     qtsvg
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
   ];
 
-  installPhase = if stdenv.isDarwin then ''
+  installPhase = if stdenv.hostPlatform.isDarwin then ''
     runHook preInstall
 
     mkdir -p $out/Applications
diff --git a/pkgs/games/ddnet/default.nix b/pkgs/games/ddnet/default.nix
index 7356e9395d76..baeabd63ebe4 100644
--- a/pkgs/games/ddnet/default.nix
+++ b/pkgs/games/ddnet/default.nix
@@ -83,9 +83,9 @@ stdenv.mkDerivation rec {
     vulkan-headers
     glslang
     spirv-tools
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libX11
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Carbon
     Cocoa
     OpenGL
@@ -110,7 +110,7 @@ stdenv.mkDerivation rec {
   ];
 
   # Tests loop forever on Darwin for some reason
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   checkTarget = "run_tests";
 
   postInstall = lib.optionalString (!buildClient) ''
diff --git a/pkgs/games/devilutionx/default.nix b/pkgs/games/devilutionx/default.nix
index e26a77e57a09..c8d2102728b2 100644
--- a/pkgs/games/devilutionx/default.nix
+++ b/pkgs/games/devilutionx/default.nix
@@ -106,7 +106,7 @@ stdenv.mkDerivation rec {
   installPhase = ''
     runHook preInstall
 
-  '' + (if stdenv.isDarwin then ''
+  '' + (if stdenv.hostPlatform.isDarwin then ''
     mkdir -p $out/Applications
     mv devilutionx.app $out/Applications
   '' else ''
diff --git a/pkgs/games/doom-ports/doomseeker/default.nix b/pkgs/games/doom-ports/doomseeker/default.nix
index 6f83fa130459..25c536230a6c 100644
--- a/pkgs/games/doom-ports/doomseeker/default.nix
+++ b/pkgs/games/doom-ports/doomseeker/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation {
   nativeBuildInputs = [ wrapQtAppsHook cmake qttools pkg-config xxd ];
   buildInputs = [ qtbase qtmultimedia zlib bzip2 ];
 
-  hardeningDisable = lib.optional stdenv.isDarwin "format";
+  hardeningDisable = lib.optional stdenv.hostPlatform.isDarwin "format";
 
   # Doomseeker looks for the engines in the program directory
   postInstall = ''
diff --git a/pkgs/games/doom-ports/odamex/default.nix b/pkgs/games/doom-ports/odamex/default.nix
index fb3b9a2fda4f..b813fc0e1c41 100644
--- a/pkgs/games/doom-ports/odamex/default.nix
+++ b/pkgs/games/doom-ports/odamex/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
 
   installPhase = ''
     runHook preInstall
-  '' + (if stdenv.isDarwin then ''
+  '' + (if stdenv.hostPlatform.isDarwin then ''
     mkdir -p $out/{Applications,bin}
     mv odalaunch/odalaunch.app $out/Applications
     makeWrapper $out/{Applications/odalaunch.app/Contents/MacOS,bin}/odalaunch
diff --git a/pkgs/games/doom-ports/zandronum/fmod.nix b/pkgs/games/doom-ports/zandronum/fmod.nix
index 59075d69c753..0d965cb71724 100644
--- a/pkgs/games/doom-ports/zandronum/fmod.nix
+++ b/pkgs/games/doom-ports/zandronum/fmod.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   version = "4.44.64";
   shortVersion = builtins.replaceStrings [ "." ] [ "" ] version;
 
-  src = fetchurl (if stdenv.isLinux then {
+  src = fetchurl (if stdenv.hostPlatform.isLinux then {
     url = "https://zdoom.org/files/fmod/fmodapi${shortVersion}linux.tar.gz";
     sha256 = "047hk92xapwwqj281f4zwl0ih821rrliya70gfj82sdfjh9lz8i1";
   } else {
@@ -24,11 +24,11 @@ stdenv.mkDerivation rec {
   dontPatchELF = true;
   dontBuild = true;
 
-  installPhase = lib.optionalString stdenv.isLinux ''
+  installPhase = lib.optionalString stdenv.hostPlatform.isLinux ''
     install -Dm755 api/lib/libfmodex${bits}-${version}.so $out/lib/libfmodex-${version}.so
     ln -s libfmodex-${version}.so $out/lib/libfmodex.so
     patchelf --set-rpath ${libPath} $out/lib/libfmodex.so
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install -D api/lib/libfmodex.dylib $out/lib/libfmodex.dylib
     install -D api/lib/libfmodexL.dylib $out/lib/libfmodexL.dylib
   '' + ''
diff --git a/pkgs/games/dwarf-fortress/default.nix b/pkgs/games/dwarf-fortress/default.nix
index e5bbf60e1550..72ca14578bae 100644
--- a/pkgs/games/dwarf-fortress/default.nix
+++ b/pkgs/games/dwarf-fortress/default.nix
@@ -49,8 +49,8 @@ let
   # The latest Dwarf Fortress version. Maintainers: when a new version comes
   # out, ensure that (unfuck|dfhack|twbt) are all up to date before changing
   # this. Note that unfuck and twbt are not required for 50.
-  latestVersion = if stdenv.isLinux then "50.13"
-                  else if stdenv.isDarwin then "0.47.05"
+  latestVersion = if stdenv.hostPlatform.isLinux then "50.13"
+                  else if stdenv.hostPlatform.isDarwin then "0.47.05"
                   else throw "Unsupported system";
 
   # Converts a version to a package name.
@@ -64,7 +64,7 @@ let
         let
           isAtLeast50 = versionAtLeast dfVersion "50.0";
 
-          dwarf-fortress-unfuck = optionalAttrs (!isAtLeast50 && stdenv.isLinux) (callPackage ./unfuck.nix { inherit dfVersion; });
+          dwarf-fortress-unfuck = optionalAttrs (!isAtLeast50 && stdenv.hostPlatform.isLinux) (callPackage ./unfuck.nix { inherit dfVersion; });
 
           dwarf-fortress = callPackage ./game.nix {
             inherit dfVersion;
diff --git a/pkgs/games/dwarf-fortress/dwarf-therapist/default.nix b/pkgs/games/dwarf-fortress/dwarf-therapist/default.nix
index 845aae0815e2..1c3e05e92368 100644
--- a/pkgs/games/dwarf-fortress/dwarf-therapist/default.nix
+++ b/pkgs/games/dwarf-fortress/dwarf-therapist/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = [ "-GNinja" ];
 
   installPhase =
-    if stdenv.isDarwin then ''
+    if stdenv.hostPlatform.isDarwin then ''
       mkdir -p $out/Applications
       cp -r DwarfTherapist.app $out/Applications
     '' else null;
diff --git a/pkgs/games/dwarf-fortress/game.nix b/pkgs/games/dwarf-fortress/game.nix
index 1aefe5b642a2..02dfd89f636d 100644
--- a/pkgs/games/dwarf-fortress/game.nix
+++ b/pkgs/games/dwarf-fortress/game.nix
@@ -67,7 +67,7 @@ let
     if hasAttr dfPlatform game
     then getAttr dfPlatform game
     else throw "Unsupported dfPlatform: ${dfPlatform}";
-  exe = if stdenv.isLinux then
+  exe = if stdenv.hostPlatform.isLinux then
     if baseVersion >= 50 then "dwarfort" else "libs/Dwarf_Fortress"
   else
     "dwarfort.exe";
@@ -86,8 +86,8 @@ stdenv.mkDerivation {
 
   postUnpack = ''
     directory=${
-      if stdenv.isLinux then "df_linux"
-      else if stdenv.isDarwin then "df_osx"
+      if stdenv.hostPlatform.isLinux then "df_linux"
+      else if stdenv.hostPlatform.isDarwin then "df_osx"
       else throw "Unsupported system"
     }
     if [ -d "$directory" ]; then
@@ -95,7 +95,7 @@ stdenv.mkDerivation {
     fi
   '';
 
-  nativeBuildInputs = optional stdenv.isLinux autoPatchelfHook;
+  nativeBuildInputs = optional stdenv.hostPlatform.isLinux autoPatchelfHook;
   buildInputs = optionals isAtLeast50 [ SDL2 SDL2_image SDL2_mixer ]
     ++ optional (!isAtLeast50) SDL
     ++ optional enableUnfuck dwarf-fortress-unfuck
@@ -124,7 +124,7 @@ stdenv.mkDerivation {
     # Store the original hash
     md5sum $exe | awk '{ print $1 }' > $out/hash.md5.orig
     echo "Original MD5: $(<$out/hash.md5.orig)" >&2
-  '' + optionalString stdenv.isDarwin ''
+  '' + optionalString stdenv.hostPlatform.isDarwin ''
     # My custom unfucked dwarfort.exe for macOS. Can't use
     # absolute paths because original doesn't have enough
     # header space. Someone plz break into Tarn's house & put
diff --git a/pkgs/games/dwarf-fortress/lazy-pack.nix b/pkgs/games/dwarf-fortress/lazy-pack.nix
index c94a46f04d9e..eef830965eb4 100644
--- a/pkgs/games/dwarf-fortress/lazy-pack.nix
+++ b/pkgs/games/dwarf-fortress/lazy-pack.nix
@@ -9,7 +9,7 @@
   # This package should, at any given time, provide an opinionated "optimal"
   # DF experience. It's the equivalent of the Lazy Newbie Pack, that is, and
   # should contain every utility available unless you disable them.
-, enableDFHack ? stdenvNoCC.isLinux
+, enableDFHack ? stdenvNoCC.hostPlatform.isLinux
 , enableTWBT ? enableDFHack
 , enableSoundSense ? true
 , enableStoneSense ? true
diff --git a/pkgs/games/dwarf-fortress/wrapper/default.nix b/pkgs/games/dwarf-fortress/wrapper/default.nix
index daa27ce5dc00..268a5c1f5da5 100644
--- a/pkgs/games/dwarf-fortress/wrapper/default.nix
+++ b/pkgs/games/dwarf-fortress/wrapper/default.nix
@@ -197,8 +197,8 @@ stdenv.mkDerivation rec {
     chmod 755 $out/bin/soundsense
   '';
 
-  doInstallCheck = stdenv.isLinux;
-  nativeInstallCheckInputs = lib.optionals stdenv.isLinux [ expect xvfb-run ];
+  doInstallCheck = stdenv.hostPlatform.isLinux;
+  nativeInstallCheckInputs = lib.optionals stdenv.hostPlatform.isLinux [ expect xvfb-run ];
 
   installCheckPhase = let
     commonExpectStatements = fmod: lib.optionalString isAtLeast50 ''
diff --git a/pkgs/games/ecwolf/default.nix b/pkgs/games/ecwolf/default.nix
index 8bbbc53a0dcd..77ccc9a929c3 100644
--- a/pkgs/games/ecwolf/default.nix
+++ b/pkgs/games/ecwolf/default.nix
@@ -25,16 +25,16 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake pkg-config ]
-    ++ lib.optionals stdenv.isDarwin [ makeWrapper ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ makeWrapper ];
   buildInputs = [ zlib bzip2 libjpeg SDL2 SDL2_net SDL2_mixer gtk3 ];
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-framework AppKit";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-framework AppKit";
 
   # ECWolf installs its binary to the games/ directory, but Nix only adds bin/
   # directories to the PATH.
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     mv "$out/games" "$out/bin"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/{Applications,bin}
     cp -R ecwolf.app $out/Applications
     makeWrapper $out/{Applications/ecwolf.app/Contents/MacOS,bin}/ecwolf
diff --git a/pkgs/games/eduke32/default.nix b/pkgs/games/eduke32/default.nix
index 740d0bc47ea7..c213a6317b10 100644
--- a/pkgs/games/eduke32/default.nix
+++ b/pkgs/games/eduke32/default.nix
@@ -49,11 +49,11 @@ in stdenv.mkDerivation (finalAttrs: {
     libvpx
     SDL2
     SDL2_mixer
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     gtk2
     libGL
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AGL
     Cocoa
     GLUT
@@ -74,7 +74,7 @@ in stdenv.mkDerivation (finalAttrs: {
       --replace-fail '#include <SDL.h>' '#include <SDL2/SDL.h>' \
       --replace-fail '#include <SDL_syswm.h>' '#include <SDL2/SDL_syswm.h>' \
       --replace-fail '#include <SDL_vulkan.h>' '#include <SDL2/SDL_vulkan.h>'
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     for f in glad.c glad_wgl.c ; do
       substituteInPlace source/glad/src/$f \
         --replace-fail libGL.so ${libGL}/lib/libGL.so
@@ -117,7 +117,7 @@ in stdenv.mkDerivation (finalAttrs: {
     runHook preInstall
 
     install -Dm755 -t $out/bin eduke32 mapster32 voidsw wangulator
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     makeWrapper $out/bin/eduke32 $out/bin/${wrapper} \
       --set-default EDUKE32_DATA_DIR /var/lib/games/eduke32 \
       --add-flags '-g "$EDUKE32_DATA_DIR/DUKE3D.GRP"'
@@ -127,7 +127,7 @@ in stdenv.mkDerivation (finalAttrs: {
     mkdir -p $out/share/icons/hicolor/scalable/apps
     gm convert "./source/duke3d/rsrc/game_icon.ico[10]" $out/share/icons/hicolor/scalable/apps/eduke32.png
     install -Dm644 ./source/sw/rsrc/game_icon.svg $out/share/icons/hicolor/scalable/apps/voidsw.svg
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications/EDuke32.app/Contents/MacOS
     mkdir -p $out/Applications/Mapster32.app/Contents/MacOS
     mkdir -p $out/Applications/VoidSW.app/Contents/MacOS
diff --git a/pkgs/games/ferium/default.nix b/pkgs/games/ferium/default.nix
index 294421527d72..08710c42214d 100644
--- a/pkgs/games/ferium/default.nix
+++ b/pkgs/games/ferium/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-eeQjezB6pRdnPADLgDLo8b+bUSP12gfBhFNt/uYCwHU=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
   cargoHash = "sha256-yBi6zyljkYEIUvSH4nXMw8fjPnt4kjqiuZ/QLT5IbqQ=";
 
diff --git a/pkgs/games/fheroes2/default.nix b/pkgs/games/fheroes2/default.nix
index bc87f453d32b..c505970c964f 100644
--- a/pkgs/games/fheroes2/default.nix
+++ b/pkgs/games/fheroes2/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ imagemagick ];
 
   buildInputs = [ gettext glibcLocalesUtf8 libpng SDL2 SDL2_image SDL2_mixer SDL2_ttf zlib ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   makeFlags = [
     "FHEROES2_STRICT_COMPILATION=1"
diff --git a/pkgs/games/flare/engine.nix b/pkgs/games/flare/engine.nix
index a1f8761815aa..b404e8ecfcd0 100644
--- a/pkgs/games/flare/engine.nix
+++ b/pkgs/games/flare/engine.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ SDL2 SDL2_image SDL2_mixer SDL2_ttf ]
-    ++ lib.optional stdenv.isDarwin Cocoa;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 
   meta = with lib; {
     description = "Free/Libre Action Roleplaying Engine";
diff --git a/pkgs/games/freeciv/default.nix b/pkgs/games/freeciv/default.nix
index 47dfb0840509..1a0cb892dcea 100644
--- a/pkgs/games/freeciv/default.nix
+++ b/pkgs/games/freeciv/default.nix
@@ -83,6 +83,6 @@ stdenv.mkDerivation rec {
     maintainers = with lib.maintainers; [ pierron ];
     platforms = lib.platforms.unix;
     hydraPlatforms = lib.platforms.linux; # sdl-config times out on darwin
-    broken = qtClient && stdenv.isDarwin; # Missing Qt5 development files
+    broken = qtClient && stdenv.hostPlatform.isDarwin; # Missing Qt5 development files
   };
 }
diff --git a/pkgs/games/freedroid/default.nix b/pkgs/games/freedroid/default.nix
index a3aba7313111..130b02997b59 100644
--- a/pkgs/games/freedroid/default.nix
+++ b/pkgs/games/freedroid/default.nix
@@ -49,6 +49,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ iblech ];
     platforms   = platforms.unix;
     # Builds but fails to render to the screen at runtime.
-    broken      = stdenv.isDarwin;
+    broken      = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/games/freedroidrpg/default.nix b/pkgs/games/freedroidrpg/default.nix
index b41b91855ee0..8c9b3e0cbf0d 100644
--- a/pkgs/games/freedroidrpg/default.nix
+++ b/pkgs/games/freedroidrpg/default.nix
@@ -20,7 +20,7 @@ in stdenv.mkDerivation {
 
   buildInputs = [
     glew SDL SDL_image SDL_gfx SDL_mixer libogg libvorbis lua5_3 libjpeg libpng zlib
-  ] ++ lib.optional stdenv.isDarwin libiconv;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/games/freenukum/default.nix b/pkgs/games/freenukum/default.nix
index af202ffd528d..e0f90773810e 100644
--- a/pkgs/games/freenukum/default.nix
+++ b/pkgs/games/freenukum/default.nix
@@ -69,6 +69,6 @@ rustPlatform.buildRustPackage rec {
     changelog = "https://salsa.debian.org/silwol/freenukum/-/blob/v${version}/CHANGELOG.md";
     license = licenses.agpl3Plus;
     maintainers = with maintainers; [ _0x4A6F ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/games/gargoyle/default.nix b/pkgs/games/gargoyle/default.nix
index 35b8dc733031..d7863361b846 100644
--- a/pkgs/games/gargoyle/default.nix
+++ b/pkgs/games/gargoyle/default.nix
@@ -5,7 +5,7 @@ let
 
   jamenv = ''
     unset AR
-  '' + (if stdenv.isDarwin then ''
+  '' + (if stdenv.hostPlatform.isDarwin then ''
     export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -I${lib.getDev SDL}/include/SDL"
     export GARGLKINI="$out/Applications/Gargoyle.app/Contents/Resources/garglk.ini"
   '' else ''
@@ -30,10 +30,10 @@ stdenv.mkDerivation rec {
     sha256 = "0w54avmbp4i4zps2rb4acmpa641s6wvwbrln4vbdhcz97fx48nzz";
   };
 
-  nativeBuildInputs = [ jam pkg-config ] ++ lib.optional stdenv.isDarwin cctools;
+  nativeBuildInputs = [ jam pkg-config ] ++ lib.optional stdenv.hostPlatform.isDarwin cctools;
 
   buildInputs = [ SDL SDL_mixer SDL_sound gtk2 ]
-    ++ lib.optionals stdenv.isDarwin [ smpeg libvorbis ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ smpeg libvorbis ];
 
   # Workaround build failure on -fno-common toolchains:
   #   ld: build/linux.release/alan3/Location.o:(.bss+0x0): multiple definition of
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
   buildPhase = jamenv + "jam -j$NIX_BUILD_CORES";
 
   installPhase =
-  if stdenv.isDarwin then
+  if stdenv.hostPlatform.isDarwin then
   (substituteAll {
     inherit (stdenv) shell;
     isExecutable = true;
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "http://ccxvii.net/gargoyle/";
     license = licenses.gpl2Plus;
     description = "Interactive fiction interpreter GUI";
diff --git a/pkgs/games/gemrb/default.nix b/pkgs/games/gemrb/default.nix
index 5906fb6f1cd8..85ea2954309e 100644
--- a/pkgs/games/gemrb/default.nix
+++ b/pkgs/games/gemrb/default.nix
@@ -20,7 +20,7 @@ let
   backend =
     if stdenv.hostPlatform.isx86 then "OpenGL" else "GLES";
 
-  withVLC = stdenv.isDarwin;
+  withVLC = stdenv.hostPlatform.isDarwin;
 
   inherit (lib) optional optionalString;
 
diff --git a/pkgs/games/gmad/default.nix b/pkgs/games/gmad/default.nix
index 97538679ee59..799609856137 100644
--- a/pkgs/games/gmad/default.nix
+++ b/pkgs/games/gmad/default.nix
@@ -22,8 +22,8 @@ stdenv.mkDerivation rec {
   buildInputs = [ premake4 bootil ];
 
   targetName =
-    if stdenv.isLinux then "gmad_linux"
-    else if stdenv.isDarwin then "gmad_osx"
+    if stdenv.hostPlatform.isLinux then "gmad_linux"
+    else if stdenv.hostPlatform.isDarwin then "gmad_osx"
     else "gmad";
 
   premakeFlags = [ "--bootil_lib=${bootil}/lib" "--bootil_inc=${bootil}/include" ];
diff --git a/pkgs/games/gtypist/default.nix b/pkgs/games/gtypist/default.nix
index 169b0fa77db0..4d9fe630ca42 100644
--- a/pkgs/games/gtypist/default.nix
+++ b/pkgs/games/gtypist/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ makeWrapper ];
   buildInputs = [ ncurses perl fortune ]
-   ++ lib.optional stdenv.isDarwin libiconv;
+   ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   preFixup = ''
      wrapProgram "$out/bin/typefortune" \
diff --git a/pkgs/games/hedgewars/default.nix b/pkgs/games/hedgewars/default.nix
index 351dd15c417f..389beb7b51c8 100644
--- a/pkgs/games/hedgewars/default.nix
+++ b/pkgs/games/hedgewars/default.nix
@@ -88,7 +88,7 @@ stdenv.mkDerivation rec {
        hedgehog or hedgehogs after a player's or CPU turn is shown only when
        all movement on the battlefield has ceased).'';
     maintainers = with maintainers; [ kragniz fpletz ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     platforms = platforms.linux;
   };
 }
diff --git a/pkgs/games/hheretic/default.nix b/pkgs/games/hheretic/default.nix
index 6e4be6bd54b7..83b0ccb620cf 100644
--- a/pkgs/games/hheretic/default.nix
+++ b/pkgs/games/hheretic/default.nix
@@ -52,6 +52,6 @@ stdenv.mkDerivation (finalAttrs: {
     mainProgram = "hheretic-gl";
     maintainers = with lib.maintainers; [ moody ];
     inherit (SDL.meta) platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/games/hhexen/default.nix b/pkgs/games/hhexen/default.nix
index 0e5345e85a7d..c73040a30f7e 100644
--- a/pkgs/games/hhexen/default.nix
+++ b/pkgs/games/hhexen/default.nix
@@ -52,6 +52,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with lib.maintainers; [ moody djanatyn ];
     mainProgram = "hhexen-gl";
     inherit (SDL.meta) platforms;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/games/hmcl/default.nix b/pkgs/games/hmcl/default.nix
index 69b546183406..7a330c399272 100644
--- a/pkgs/games/hmcl/default.nix
+++ b/pkgs/games/hmcl/default.nix
@@ -75,7 +75,7 @@ stdenv.mkDerivation (finalAttrs: {
           glib
           openal
           libglvnd
-        ] ++ lib.optionals stdenv.isLinux [
+        ] ++ lib.optionals stdenv.hostPlatform.isLinux [
           xorg.libX11
           xorg.libXxf86vm
           xorg.libXext
diff --git a/pkgs/games/ja2-stracciatella/default.nix b/pkgs/games/ja2-stracciatella/default.nix
index ea363c969429..9ad6e3105406 100644
--- a/pkgs/games/ja2-stracciatella/default.nix
+++ b/pkgs/games/ja2-stracciatella/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation {
   inherit src version;
 
   nativeBuildInputs = [ cmake python3 ];
-  buildInputs = [ SDL2 fltk rapidjson gtest ] ++ lib.optionals stdenv.isDarwin [ Carbon Cocoa ];
+  buildInputs = [ SDL2 fltk rapidjson gtest ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon Cocoa ];
 
   patches = [
     ./remove-rust-buildstep.patch
diff --git a/pkgs/games/jfsw/default.nix b/pkgs/games/jfsw/default.nix
index ed82964e4d0e..181b28e06c9d 100644
--- a/pkgs/games/jfsw/default.nix
+++ b/pkgs/games/jfsw/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation (finalAttrs: {
     license = lib.licenses.gpl2Plus;
     mainProgram = "sw";
     maintainers = with lib.maintainers; [ moody ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     inherit (SDL2.meta) platforms;
   };
 })
diff --git a/pkgs/games/julius/default.nix b/pkgs/games/julius/default.nix
index 69f3c34a1f0f..f5f5bb6d1eb4 100644
--- a/pkgs/games/julius/default.nix
+++ b/pkgs/games/julius/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     cmake
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.sigtool
     libicns
     imagemagick
@@ -38,11 +38,11 @@ stdenv.mkDerivation rec {
     SDL2
     SDL2_mixer
     libpng
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
   ];
 
-  installPhase = lib.optionalString stdenv.isDarwin ''
+  installPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     runHook preInstall
     mkdir -p $out/Applications
     cp -r julius.app $out/Applications/
diff --git a/pkgs/games/jumpy/default.nix b/pkgs/games/jumpy/default.nix
index 23e130582a3d..7040aa4e3401 100644
--- a/pkgs/games/jumpy/default.nix
+++ b/pkgs/games/jumpy/default.nix
@@ -41,7 +41,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     zstd
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
     libxkbcommon
     udev
@@ -51,7 +51,7 @@ rustPlatform.buildRustPackage rec {
     xorg.libXcursor
     xorg.libXi
     xorg.libXrandr
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Cocoa
     rustPlatform.bindgenHook
   ];
@@ -70,7 +70,7 @@ rustPlatform.buildRustPackage rec {
     wrapProgram $out/bin/jumpy --chdir $out/share
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf $out/bin/.jumpy-wrapped \
       --add-rpath ${lib.makeLibraryPath [ vulkan-loader ]}
   '';
diff --git a/pkgs/games/klavaro/default.nix b/pkgs/games/klavaro/default.nix
index 58dda8d23a63..adaae799cb5c 100644
--- a/pkgs/games/klavaro/default.nix
+++ b/pkgs/games/klavaro/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
   '';
 
   # remove forbidden references to $TMPDIR
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     for f in "$out"/bin/*; do
       if isELF "$f"; then
         patchelf --shrink-rpath --allowed-rpath-prefixes "$NIX_STORE" "$f"
diff --git a/pkgs/games/ldmud/default.nix b/pkgs/games/ldmud/default.nix
index 83bbadfe7dc4..de92518781fe 100644
--- a/pkgs/games/ldmud/default.nix
+++ b/pkgs/games/ldmud/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional postgresSupport postgresql
     ++ lib.optional sqliteSupport sqlite ++ lib.optional tlsSupport openssl
     ++ lib.optional pythonSupport python310
-    ++ lib.optionals stdenv.isDarwin [ libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   # To support systems without autoconf LD puts its configure.ac in a non-default
   # location and uses a helper script. We skip that script and symlink the .ac
diff --git a/pkgs/games/libremines/default.nix b/pkgs/games/libremines/default.nix
index f1a79e54bd62..e639b981369e 100644
--- a/pkgs/games/libremines/default.nix
+++ b/pkgs/games/libremines/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     qtmultimedia
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
   ];
 
diff --git a/pkgs/games/lincity/default.nix b/pkgs/games/lincity/default.nix
index 3f77d9bbe415..deb4f2eb0250 100644
--- a/pkgs/games/lincity/default.nix
+++ b/pkgs/games/lincity/default.nix
@@ -38,6 +38,6 @@ stdenv.mkDerivation rec {
     homepage = "https://sourceforge.net/projects/lincity";
     maintainers = [ ];
     # ../lcintl.h:14:10: fatal error: 'libintl.h' file not found
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/games/liquidwar/5.nix b/pkgs/games/liquidwar/5.nix
index 9c61f97d1a7f..64ea76560f13 100644
--- a/pkgs/games/liquidwar/5.nix
+++ b/pkgs/games/liquidwar/5.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ allegro ];
 
-  configureFlags = lib.optional stdenv.isx86_64 "--disable-asm";
+  configureFlags = lib.optional stdenv.hostPlatform.isx86_64 "--disable-asm";
 
   hardeningDisable = [ "format" ];
 
diff --git a/pkgs/games/manaplus/default.nix b/pkgs/games/manaplus/default.nix
index deb12d45ad4b..768a971d8346 100644
--- a/pkgs/games/manaplus/default.nix
+++ b/pkgs/games/manaplus/default.nix
@@ -28,6 +28,6 @@ stdenv.mkDerivation rec {
     description = "Free OpenSource 2D MMORPG client";
     homepage = "https://manaplus.org/";
     license = lib.licenses.gpl2Plus;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/games/mchprs/default.nix b/pkgs/games/mchprs/default.nix
index 49ef836423cd..97fc84b5d9b4 100644
--- a/pkgs/games/mchprs/default.nix
+++ b/pkgs/games/mchprs/default.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
     openssl
     sqlite
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/games/mindustry/default.nix b/pkgs/games/mindustry/default.nix
index 789b2bca65a5..43001343b748 100644
--- a/pkgs/games/mindustry/default.nix
+++ b/pkgs/games/mindustry/default.nix
@@ -187,7 +187,7 @@ stdenv.mkDerivation {
       mkdir -p $out/bin
       makeWrapper ${jdk}/bin/java $out/bin/mindustry \
         --add-flags "-jar $out/share/mindustry.jar" \
-        ${lib.optionalString stdenv.isLinux "--suffix PATH : ${lib.makeBinPath [zenity]}"} \
+        ${lib.optionalString stdenv.hostPlatform.isLinux "--suffix PATH : ${lib.makeBinPath [zenity]}"} \
         --suffix LD_LIBRARY_PATH : ${lib.makeLibraryPath [libpulseaudio alsa-lib libjack2]} \
         --set ALSA_PLUGIN_DIR ${alsa-plugins}/lib/alsa-lib/'' + lib.optionalString enableWayland '' \
         --set SDL_VIDEODRIVER wayland \
@@ -240,6 +240,6 @@ stdenv.mkDerivation {
     maintainers = with lib.maintainers; [ chkno fgaz thekostins ];
     platforms = lib.platforms.all;
     # TODO alsa-lib is linux-only, figure out what dependencies are required on Darwin
-    broken = enableClient && stdenv.isDarwin;
+    broken = enableClient && stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/games/minecraft-servers/derivation.nix b/pkgs/games/minecraft-servers/derivation.nix
index a94a2daecac2..c6f26d73eb6f 100644
--- a/pkgs/games/minecraft-servers/derivation.nix
+++ b/pkgs/games/minecraft-servers/derivation.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation {
 
     makeWrapper ${lib.getExe jre_headless} $out/bin/minecraft-server \
       --append-flags "-jar $out/lib/minecraft/server.jar nogui" \
-      ${lib.optionalString stdenv.isLinux "--prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [ udev ]}"}
+      ${lib.optionalString stdenv.hostPlatform.isLinux "--prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [ udev ]}"}
 
     runHook postInstall
   '';
diff --git a/pkgs/games/minetest/default.nix b/pkgs/games/minetest/default.nix
index 3a49b5b90f44..f4ccf5ac71e9 100644
--- a/pkgs/games/minetest/default.nix
+++ b/pkgs/games/minetest/default.nix
@@ -119,13 +119,13 @@ stdenv.mkDerivation (finalAttrs: {
 
   postPatch = ''
     substituteInPlace src/filesys.cpp --replace "/bin/rm" "${coreutils}/bin/rm"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i '/pagezero_size/d;/fixup_bundle/d' src/CMakeLists.txt
   '';
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchShebangs $out
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv $out/minetest.app $out/Applications
   '';
diff --git a/pkgs/games/mudlet/default.nix b/pkgs/games/mudlet/default.nix
index 78a7eb901c50..eef4560e386a 100644
--- a/pkgs/games/mudlet/default.nix
+++ b/pkgs/games/mudlet/default.nix
@@ -97,7 +97,7 @@ stdenv.mkDerivation rec {
     qtmultimedia
     yajl
     discord-rpc
-  ] ++ lib.optional stdenv.isDarwin [
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin [
     AppKit
   ];
 
@@ -122,7 +122,7 @@ stdenv.mkDerivation rec {
 
     cp -r ../translations $out/share/
 
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     cp -r src/mudlet.app/ $out/Applications/mudlet.app
     mv $out/Applications/mudlet.app/Contents/MacOS/mudlet $out/Applications/mudlet.app/Contents/MacOS/mudlet-unwrapped
@@ -132,7 +132,7 @@ stdenv.mkDerivation rec {
       --prefix DYLD_LIBRARY_PATH : "${lib.makeLibraryPath [ libsForQt5.qtkeychain discord-rpc ]}:$out/lib" \
       --chdir "$out";
 
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mkdir -pv $out/bin
     cp src/mudlet $out/bin/mudlet-unwrapped
     makeQtWrapper $out/bin/mudlet-unwrapped $out/bin/mudlet \
diff --git a/pkgs/games/npush/default.nix b/pkgs/games/npush/default.nix
index 7a061a4bc638..e3d199c7fa87 100644
--- a/pkgs/games/npush/default.nix
+++ b/pkgs/games/npush/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://npush.sourceforge.net/";
     description = "Sokoban-like game";
     mainProgram = "npush";
diff --git a/pkgs/games/opendungeons/default.nix b/pkgs/games/opendungeons/default.nix
index 3562aa8c6f89..a66504fa1d83 100644
--- a/pkgs/games/opendungeons/default.nix
+++ b/pkgs/games/opendungeons/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation {
   ];
 
   # source/utils/StackTraceUnix.cpp:122:2: error: #error Unsupported architecture.
-  postPatch = lib.optionalString (!stdenv.isx86_64) ''
+  postPatch = lib.optionalString (!stdenv.hostPlatform.isx86_64) ''
     cp source/utils/StackTrace{Stub,Unix}.cpp
   '';
 
diff --git a/pkgs/games/openmw/default.nix b/pkgs/games/openmw/default.nix
index edeed841c923..22bd90a348a9 100644
--- a/pkgs/games/openmw/default.nix
+++ b/pkgs/games/openmw/default.nix
@@ -66,7 +66,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     sed '1i#include <memory>' -i components/myguiplatform/myguidatamanager.cpp # gcc12
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Don't fix Darwin app bundle
     sed -i '/fixup_bundle/d' CMakeLists.txt
   '';
@@ -74,7 +74,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config wrapQtAppsHook ];
 
   # If not set, OSG plugin .so files become shell scripts on Darwin.
-  dontWrapQtApps = stdenv.isDarwin;
+  dontWrapQtApps = stdenv.hostPlatform.isDarwin;
 
   buildInputs = [
     SDL2
@@ -90,7 +90,7 @@ stdenv.mkDerivation rec {
     recastnavigation
     unshield
     yaml-cpp
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreMedia
     VideoDecodeAcceleration
     VideoToolbox
@@ -99,7 +99,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-DOpenGL_GL_PREFERENCE=${GL}"
     "-DOPENMW_USE_SYSTEM_RECASTNAVIGATION=1"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DOPENMW_OSX_DEPLOYMENT=ON"
   ];
 
diff --git a/pkgs/games/openrw/default.nix b/pkgs/games/openrw/default.nix
index 061d053e34ec..d2d86226af26 100644
--- a/pkgs/games/openrw/default.nix
+++ b/pkgs/games/openrw/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation {
 
   buildInputs = [
     sfml libGLU libGL bullet glm libmad openal SDL2 boost ffmpeg_6
-  ] ++ lib.optionals stdenv.isDarwin [ OpenAL Cocoa ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ OpenAL Cocoa ];
 
   meta = with lib; {
     description = "Unofficial open source recreation of the classic Grand Theft Auto III game executable";
diff --git a/pkgs/games/openspades/default.nix b/pkgs/games/openspades/default.nix
index ebab9a018fbf..fd070312b1f9 100644
--- a/pkgs/games/openspades/default.nix
+++ b/pkgs/games/openspades/default.nix
@@ -65,6 +65,6 @@ stdenv.mkDerivation rec {
     platforms   = platforms.all;
     maintainers = with maintainers; [ abbradar azahi ];
     # never built on aarch64-linux since first introduction in nixpkgs
-    broken = stdenv.isDarwin || (stdenv.isLinux && stdenv.isAarch64);
+    broken = stdenv.hostPlatform.isDarwin || (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   };
 }
diff --git a/pkgs/games/osu-lazer/bin.nix b/pkgs/games/osu-lazer/bin.nix
index d3dd268620ed..89ebe14cb41e 100644
--- a/pkgs/games/osu-lazer/bin.nix
+++ b/pkgs/games/osu-lazer/bin.nix
@@ -43,7 +43,7 @@ let
 
   passthru.updateScript = ./update-bin.sh;
 in
-if stdenv.isDarwin
+if stdenv.hostPlatform.isDarwin
 then stdenv.mkDerivation {
   inherit pname version src meta passthru;
 
diff --git a/pkgs/games/papermc/derivation.nix b/pkgs/games/papermc/derivation.nix
index 5dd169dbc9b4..c7ad650d00f6 100644
--- a/pkgs/games/papermc/derivation.nix
+++ b/pkgs/games/papermc/derivation.nix
@@ -22,7 +22,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
 
     makeWrapper ${lib.getExe jre} "$out/bin/minecraft-server" \
       --append-flags "-jar $out/share/papermc/papermc.jar nogui" \
-      ${lib.optionalString stdenvNoCC.isLinux "--prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [ udev ]}"}
+      ${lib.optionalString stdenvNoCC.hostPlatform.isLinux "--prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [ udev ]}"}
 
     runHook postInstall
   '';
diff --git a/pkgs/games/path-of-building/default.nix b/pkgs/games/path-of-building/default.nix
index 0fcd79b4b956..622df7873b38 100644
--- a/pkgs/games/path-of-building/default.nix
+++ b/pkgs/games/path-of-building/default.nix
@@ -64,7 +64,7 @@ stdenv.mkDerivation {
     qttools
     wrapQtAppsHook
     icoutils
-  ] ++ lib.optional stdenv.isLinux copyDesktopItems;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux copyDesktopItems;
 
   buildInputs = [
     qtbase
@@ -126,6 +126,6 @@ stdenv.mkDerivation {
     license = lib.licenses.mit;
     maintainers = [ lib.maintainers.k900 ];
     mainProgram = "pobfrontend";
-    broken = stdenv.isDarwin; # doesn't find uic6 for some reason
+    broken = stdenv.hostPlatform.isDarwin; # doesn't find uic6 for some reason
   };
 }
diff --git a/pkgs/games/powermanga/default.nix b/pkgs/games/powermanga/default.nix
index 3c89266370cf..eaa45460be92 100644
--- a/pkgs/games/powermanga/default.nix
+++ b/pkgs/games/powermanga/default.nix
@@ -55,6 +55,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ fgaz ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/games/quake2/yquake2/default.nix b/pkgs/games/quake2/yquake2/default.nix
index 4135706c9813..3c78d0e5f233 100644
--- a/pkgs/games/quake2/yquake2/default.nix
+++ b/pkgs/games/quake2/yquake2/default.nix
@@ -25,13 +25,13 @@ let
     postPatch = ''
       substituteInPlace src/client/curl/qcurl.c \
         --replace "\"libcurl.so.3\", \"libcurl.so.4\"" "\"${curl.out}/lib/libcurl.so\", \"libcurl.so.3\", \"libcurl.so.4\""
-    '' + lib.optionalString (openalSupport && !stdenv.isDarwin) ''
+    '' + lib.optionalString (openalSupport && !stdenv.hostPlatform.isDarwin) ''
       substituteInPlace Makefile \
         --replace "\"libopenal.so.1\"" "\"${openal}/lib/libopenal.so.1\""
     '';
 
     buildInputs = [ SDL2 libGL curl ]
-      ++ lib.optionals stdenv.isDarwin [ Cocoa OpenAL ]
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa OpenAL ]
       ++ lib.optional openalSupport openal;
 
     makeFlags = [
diff --git a/pkgs/games/quakespasm/default.nix b/pkgs/games/quakespasm/default.nix
index 6b3080c7573e..5b124cb464d1 100644
--- a/pkgs/games/quakespasm/default.nix
+++ b/pkgs/games/quakespasm/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, SDL, SDL2, fetchurl, gzip, libvorbis, libmad, flac, libopus, opusfile, libogg, libxmp
 , Cocoa, CoreAudio, CoreFoundation, IOKit, OpenGL
 , copyDesktopItems, makeDesktopItem, pkg-config
-, useSDL2 ? stdenv.isDarwin # TODO: CoreAudio fails to initialize with SDL 1.x for some reason.
+, useSDL2 ? stdenv.hostPlatform.isDarwin # TODO: CoreAudio fails to initialize with SDL 1.x for some reason.
 }:
 
 stdenv.mkDerivation rec {
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   sourceRoot = "${pname}-${version}/Quake";
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     # Makes Darwin Makefile use system libraries instead of ones from app bundle
     ./quakespasm-darwin-makefile-improvements.patch
   ];
@@ -28,9 +28,9 @@ stdenv.mkDerivation rec {
   buildInputs = [
     gzip libvorbis libmad flac libopus opusfile libogg libxmp
     (if useSDL2 then SDL2 else SDL)
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa CoreAudio IOKit OpenGL
-  ] ++ lib.optionals (stdenv.isDarwin && useSDL2) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && useSDL2) [
     CoreFoundation
   ];
 
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     "USE_SDL2=1"
   ];
 
-  makefile = if (stdenv.isDarwin) then "Makefile.darwin" else "Makefile";
+  makefile = if (stdenv.hostPlatform.isDarwin) then "Makefile.darwin" else "Makefile";
 
   preInstall = ''
     mkdir -p "$out/bin"
@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
     substituteInPlace Makefile.darwin --replace "/usr/local/games" "$out/bin"
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Let's build app bundle
     mkdir -p $out/Applications/Quake.app/Contents/MacOS
     mkdir -p $out/Applications/Quake.app/Contents/Resources
diff --git a/pkgs/games/quakespasm/vulkan.nix b/pkgs/games/quakespasm/vulkan.nix
index 32428107d850..d4fdc41b4a32 100644
--- a/pkgs/games/quakespasm/vulkan.nix
+++ b/pkgs/games/quakespasm/vulkan.nix
@@ -47,14 +47,14 @@ stdenv.mkDerivation rec {
     libvorbis
     opusfile
     vulkan-loader
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     moltenvk
     vulkan-headers
   ];
 
   buildFlags = [ "DO_USERDIRS=1" ];
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     NIX_CFLAGS_COMPILE = lib.concatStringsSep " " [
       "-Wno-error=unused-but-set-variable"
       "-Wno-error=implicit-const-int-float-conversion"
@@ -66,7 +66,7 @@ stdenv.mkDerivation rec {
     cp vkquake "$out/bin"
   '';
 
-  postFixup = lib.optionalString (!stdenv.isDarwin) ''
+  postFixup = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     patchelf $out/bin/vkquake \
       --add-rpath ${lib.makeLibraryPath [ vulkan-loader ]}
   '';
diff --git a/pkgs/games/quantumminigolf/default.nix b/pkgs/games/quantumminigolf/default.nix
index c91fb8b28c53..b7e8feae2428 100644
--- a/pkgs/games/quantumminigolf/default.nix
+++ b/pkgs/games/quantumminigolf/default.nix
@@ -36,6 +36,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ raskin ];
     platforms = platforms.linux;
     # never built on aarch64-linux since first introduction in nixpkgs
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/games/randtype/default.nix b/pkgs/games/randtype/default.nix
index f7e6ee06ceac..ba5c40367ec0 100644
--- a/pkgs/games/randtype/default.nix
+++ b/pkgs/games/randtype/default.nix
@@ -28,6 +28,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ dandellion ];
     license = licenses.gpl2Only;
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/randtype.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/randtype.x86_64-darwin
   };
 }
diff --git a/pkgs/games/raylib-games/default.nix b/pkgs/games/raylib-games/default.nix
index 7a0d80a4c5e6..cad4424a3088 100644
--- a/pkgs/games/raylib-games/default.nix
+++ b/pkgs/games/raylib-games/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [ raylib ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   configurePhase = ''
     runHook preConfigure
diff --git a/pkgs/games/scummvm/default.nix b/pkgs/games/scummvm/default.nix
index 2252146679b2..6c6fc7fac0ae 100644
--- a/pkgs/games/scummvm/default.nix
+++ b/pkgs/games/scummvm/default.nix
@@ -16,9 +16,9 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ nasm ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib libGLU libGL
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa AudioToolbox Carbon CoreMIDI AudioUnit
   ] ++ [
     curl freetype flac fluidsynth libjpeg libmad libmpeg2 libogg libtheora libvorbis SDL2 zlib
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
   # They use 'install -s', that calls the native strip instead of the cross
   postConfigure = ''
     sed -i "s/-c -s/-c -s --strip-program=''${STRIP@Q}/" ports.mk
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace config.mk \
       --replace x86_64-apple-darwin-ranlib ${cctools}/bin/ranlib \
       --replace aarch64-apple-darwin-ranlib ${cctools}/bin/ranlib
diff --git a/pkgs/games/shipwright/default.nix b/pkgs/games/shipwright/default.nix
index d214e6934b19..2ff8c063f5f0 100644
--- a/pkgs/games/shipwright/default.nix
+++ b/pkgs/games/shipwright/default.nix
@@ -62,10 +62,10 @@ stdenv.mkDerivation (finalAttrs: {
     python3
     imagemagick
     makeWrapper
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     lsb-release
     copyDesktopItems
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libicns
     darwin.sigtool
   ];
@@ -76,7 +76,7 @@ stdenv.mkDerivation (finalAttrs: {
     SDL2
     SDL2_net
     libpng
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libX11
     libXrandr
     libXinerama
@@ -85,7 +85,7 @@ stdenv.mkDerivation (finalAttrs: {
     libXext
     libpulseaudio
     zenity
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     IOSurface
     Metal
     QuartzCore
@@ -100,7 +100,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   env.NIX_CFLAGS_COMPILE =
-    lib.optionalString stdenv.isDarwin "-Wno-int-conversion -Wno-implicit-int";
+    lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-int-conversion -Wno-implicit-int";
 
   dontAddPrefix = true;
 
@@ -114,18 +114,18 @@ stdenv.mkDerivation (finalAttrs: {
     popd
   '';
 
-  preInstall = lib.optionalString stdenv.isLinux ''
+  preInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     # Cmake likes it here for its install paths
     cp ../OTRExporter/soh.otr ..
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     cp ../OTRExporter/soh.otr soh/soh.otr
   '';
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     mkdir -p $out/bin
     ln -s $out/lib/soh.elf $out/bin/soh
     install -Dm644 ../soh/macosx/sohIcon.png $out/share/pixmaps/soh.png
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Recreate the macOS bundle (without using cpack)
     # We mirror the structure of the bundle distributed by the project
 
@@ -167,7 +167,7 @@ stdenv.mkDerivation (finalAttrs: {
     codesign -f -s - $out/Applications/soh.app/Contents/Resources/soh-macos
   '';
 
-  fixupPhase = lib.optionalString stdenv.isLinux ''
+  fixupPhase = lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/lib/soh.elf --prefix PATH ":" ${lib.makeBinPath [ zenity ]}
   '';
 
diff --git a/pkgs/games/simutrans/default.nix b/pkgs/games/simutrans/default.nix
index 6a48c5a2caeb..b6452819bee5 100644
--- a/pkgs/games/simutrans/default.nix
+++ b/pkgs/games/simutrans/default.nix
@@ -121,8 +121,8 @@ let
     configurePhase = let
       # Configuration as per the readme.txt and config.template
       platform =
-        if stdenv.isLinux then "linux" else
-        if stdenv.isDarwin then "mac" else throw "add your platform";
+        if stdenv.hostPlatform.isLinux then "linux" else
+        if stdenv.hostPlatform.isDarwin then "mac" else throw "add your platform";
       config = ''
         BACKEND = mixer_sdl
         COLOUR_DEPTH = 16
diff --git a/pkgs/games/sm64ex/generic.nix b/pkgs/games/sm64ex/generic.nix
index fcdd6616a506..fd53b78042f5 100644
--- a/pkgs/games/sm64ex/generic.nix
+++ b/pkgs/games/sm64ex/generic.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [
     "VERSION=${region}"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "OSX_BUILD=1"
   ] ++ compileFlags;
 
diff --git a/pkgs/games/snipes/default.nix b/pkgs/games/snipes/default.nix
index f978a1b71d7b..7212d6d81670 100644
--- a/pkgs/games/snipes/default.nix
+++ b/pkgs/games/snipes/default.nix
@@ -42,6 +42,6 @@ in stdenv.mkDerivation {
     homepage    = "https://www.vogons.org/viewtopic.php?f=7&t=49073";
     license     = licenses.free; # This reverse-engineered source code is released with the original authors' permission.
     maintainers = with maintainers; [ peterhoeg cybershadow ];
-    broken      = stdenv.isDarwin; # not supported upstream - https://github.com/Davidebyzero/Snipes/issues/8#issuecomment-433720046
+    broken      = stdenv.hostPlatform.isDarwin; # not supported upstream - https://github.com/Davidebyzero/Snipes/issues/8#issuecomment-433720046
   };
 }
diff --git a/pkgs/games/space-cadet-pinball/default.nix b/pkgs/games/space-cadet-pinball/default.nix
index 53edf5860518..0f3009e4abe5 100644
--- a/pkgs/games/space-cadet-pinball/default.nix
+++ b/pkgs/games/space-cadet-pinball/default.nix
@@ -27,11 +27,11 @@ stdenv.mkDerivation rec {
   buildInputs = [
     SDL2
     SDL2_mixer
-  ] ++ lib.optional stdenv.isDarwin Cocoa;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 
   # Darwin needs a custom installphase since it is excluded from the cmake install
   # https://github.com/k4zmu2a/SpaceCadetPinball/blob/0f88e43ba261bc21fa5c3ef9d44969a2a079d0de/CMakeLists.txt#L221
-  installPhase = lib.optionalString stdenv.isDarwin ''
+  installPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     runHook preInstall
     mkdir -p $out/bin
     install ../bin/SpaceCadetPinball $out/bin
diff --git a/pkgs/games/space-orbit/default.nix b/pkgs/games/space-orbit/default.nix
index 74db273bb879..c5bd6fdf77f0 100644
--- a/pkgs/games/space-orbit/default.nix
+++ b/pkgs/games/space-orbit/default.nix
@@ -38,7 +38,7 @@ EOF
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Space combat simulator";
     mainProgram = "space-orbit";
     license = licenses.gpl2Plus;
diff --git a/pkgs/games/steam/fhsenv.nix b/pkgs/games/steam/fhsenv.nix
index 1c92bb261765..6a4a1e002058 100644
--- a/pkgs/games/steam/fhsenv.nix
+++ b/pkgs/games/steam/fhsenv.nix
@@ -46,7 +46,7 @@ let
     sqlite
   ] ++ extraPkgs pkgs;
 
-  ldPath = lib.optionals stdenv.is64bit [ "/lib64" ]
+  ldPath = lib.optionals stdenv.hostPlatform.is64bit [ "/lib64" ]
   ++ [ "/lib32" ]
   ++ map (x: "/steamrt/${steam-runtime-wrapped.arch}/" + x) steam-runtime-wrapped.libs
   ++ lib.optionals (steam-runtime-wrapped-i686 != null) (map (x: "/steamrt/${steam-runtime-wrapped-i686.arch}/" + x) steam-runtime-wrapped-i686.libs);
diff --git a/pkgs/games/stockfish/default.nix b/pkgs/games/stockfish/default.nix
index 456c36784d5f..b4531fc0015d 100644
--- a/pkgs/games/stockfish/default.nix
+++ b/pkgs/games/stockfish/default.nix
@@ -4,11 +4,11 @@ let
     # The x86-64-modern may need to be refined further in the future
     # but stdenv.hostPlatform CPU flags do not currently work on Darwin
     # https://discourse.nixos.org/t/darwin-system-and-stdenv-hostplatform-features/9745
-    archDarwin = if stdenv.isx86_64 then "x86-64-modern" else "apple-silicon";
-    arch = if stdenv.isDarwin then archDarwin else
-           if stdenv.isx86_64 then "x86-64" else
-           if stdenv.isi686 then "x86-32" else
-           if stdenv.isAarch64 then "armv8" else
+    archDarwin = if stdenv.hostPlatform.isx86_64 then "x86-64-modern" else "apple-silicon";
+    arch = if stdenv.hostPlatform.isDarwin then archDarwin else
+           if stdenv.hostPlatform.isx86_64 then "x86-64" else
+           if stdenv.hostPlatform.isi686 then "x86-32" else
+           if stdenv.hostPlatform.isAarch64 then "armv8" else
            "unknown";
 
     # These files can be found in src/evaluate.h
diff --git a/pkgs/games/system-syzygy/default.nix b/pkgs/games/system-syzygy/default.nix
index b478259a8a9c..d321284b7427 100644
--- a/pkgs/games/system-syzygy/default.nix
+++ b/pkgs/games/system-syzygy/default.nix
@@ -43,7 +43,7 @@ rustPlatform.buildRustPackage rec {
 
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Story and a puzzle game, where you solve a variety of puzzle";
     mainProgram = "syzygy";
     homepage = "https://mdsteele.games/syzygy";
diff --git a/pkgs/games/taisei/default.nix b/pkgs/games/taisei/default.nix
index cb87e48da38e..ee5712f7b7f6 100644
--- a/pkgs/games/taisei/default.nix
+++ b/pkgs/games/taisei/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Free and open-source Touhou Project clone and fangame";
     mainProgram = "taisei";
     longDescription = ''
diff --git a/pkgs/games/tecnoballz/default.nix b/pkgs/games/tecnoballz/default.nix
index 0d19a2c0f7e2..b3f1914bc18e 100644
--- a/pkgs/games/tecnoballz/default.nix
+++ b/pkgs/games/tecnoballz/default.nix
@@ -65,6 +65,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ fgaz ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/games/teeworlds/default.nix b/pkgs/games/teeworlds/default.nix
index 505c61588e3e..b07dbc311a2c 100644
--- a/pkgs/games/teeworlds/default.nix
+++ b/pkgs/games/teeworlds/default.nix
@@ -51,19 +51,19 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     cmake
     pkg-config
-  ] ++ lib.optionals (buildClient && stdenv.isLinux) [
+  ] ++ lib.optionals (buildClient && stdenv.hostPlatform.isLinux) [
     icoutils
   ];
 
   buildInputs = [
     python3 lua5_3 zlib
     wavpack
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Cocoa
   ] ++ lib.optionals buildClient ([
     SDL2
     freetype
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libGLU
     alsa-lib
     libX11
@@ -73,14 +73,14 @@ stdenv.mkDerivation rec {
     "-DCLIENT=${if buildClient then "ON" else "OFF"}"
   ];
 
-  postInstall = lib.optionalString buildClient (lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString buildClient (lib.optionalString stdenv.hostPlatform.isLinux ''
     # Convert and install desktop icon
     mkdir -p $out/share/pixmaps
     icotool --extract --index 1 --output $out/share/pixmaps/teeworlds.png $src/other/icons/teeworlds.ico
 
     # Install menu item
     install -D $src/other/teeworlds.desktop $out/share/applications/teeworlds.desktop
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p "$out/Applications/teeworlds.app/Contents/MacOS"
     mkdir -p "$out/Applications/teeworlds.app/Contents/Resources"
 
diff --git a/pkgs/games/uhexen2/default.nix b/pkgs/games/uhexen2/default.nix
index 1d44b16c3aef..a0922a145703 100644
--- a/pkgs/games/uhexen2/default.nix
+++ b/pkgs/games/uhexen2/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Cross-platform port of Hexen II game";
     longDescription = ''
       Hammer of Thyrion (uHexen2) is a cross-platform port of Raven Software's Hexen II source.
diff --git a/pkgs/games/vessel/default.nix b/pkgs/games/vessel/default.nix
index 42408cd042aa..ddbbf68bbc08 100644
--- a/pkgs/games/vessel/default.nix
+++ b/pkgs/games/vessel/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     directory where you saved it.
   '';
 
-  src = if (stdenv.isi686) then
+  src = if (stdenv.hostPlatform.isi686) then
     requireFile {
       message = goBuyItNow;
       name = "vessel-${version}-bin";
diff --git a/pkgs/games/voxelands/default.nix b/pkgs/games/voxelands/default.nix
index bac78ab72f35..b1b30a7e769d 100644
--- a/pkgs/games/voxelands/default.nix
+++ b/pkgs/games/voxelands/default.nix
@@ -69,6 +69,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Plus;
     platforms = platforms.linux;
     maintainers = [ ];
-    broken = stdenv.isAarch64;  # build fails with "libIrrlicht.so: undefined reference to `png_init_filter_functions_neon'"
+    broken = stdenv.hostPlatform.isAarch64;  # build fails with "libIrrlicht.so: undefined reference to `png_init_filter_functions_neon'"
   };
 }
diff --git a/pkgs/games/warsow/engine.nix b/pkgs/games/warsow/engine.nix
index 5bc2ef7dbd91..71bf581f14fa 100644
--- a/pkgs/games/warsow/engine.nix
+++ b/pkgs/games/warsow/engine.nix
@@ -54,6 +54,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ astsmtl abbradar ];
     platforms = platforms.linux;
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/games/warzone2100/default.nix b/pkgs/games/warzone2100/default.nix
index 45b2123e443a..81ab98e67bc9 100644
--- a/pkgs/games/warzone2100/default.nix
+++ b/pkgs/games/warzone2100/default.nix
@@ -68,7 +68,7 @@ stdenv.mkDerivation (finalAttrs: {
     freetype
     harfbuzz
     sqlite
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     vulkan-headers
     vulkan-loader
   ];
@@ -102,7 +102,7 @@ stdenv.mkDerivation (finalAttrs: {
     #
     # Alternatively, we could have set CMAKE_INSTALL_BINDIR to "bin".
     "-DCMAKE_INSTALL_DATAROOTDIR=${placeholder "out"}/share"
-  ] ++ lib.optional stdenv.isDarwin "-P../configure_mac.cmake";
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "-P../configure_mac.cmake";
 
   postInstall = lib.optionalString withVideos ''
     cp ${sequences_src} $out/share/warzone2100/sequences.wz
@@ -141,6 +141,6 @@ stdenv.mkDerivation (finalAttrs: {
     platforms = platforms.all;
     # configure_mac.cmake tries to download stuff
     # https://github.com/Warzone2100/warzone2100/blob/master/macosx/README.md
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/games/wesnoth/default.nix b/pkgs/games/wesnoth/default.nix
index 01dd8ceaca17..5017216aecc4 100644
--- a/pkgs/games/wesnoth/default.nix
+++ b/pkgs/games/wesnoth/default.nix
@@ -20,13 +20,13 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ SDL2 SDL2_image SDL2_mixer SDL2_net SDL2_ttf pango gettext boost
                   libvorbis fribidi dbus libpng pcre openssl icu lua curl ]
-                ++ lib.optionals stdenv.isDarwin [ Cocoa Foundation];
+                ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa Foundation];
 
   cmakeFlags = [
     "-DENABLE_SYSTEM_LUA=ON"
   ];
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-framework AppKit";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-framework AppKit";
 
   meta = with lib; {
     description = "Battle for Wesnoth, a free, turn-based strategy game with a fantasy theme";
diff --git a/pkgs/games/widelands/default.nix b/pkgs/games/widelands/default.nix
index c2d7e48e456d..e34e23ab6035 100644
--- a/pkgs/games/widelands/default.nix
+++ b/pkgs/games/widelands/default.nix
@@ -72,12 +72,12 @@ stdenv.mkDerivation rec {
     libSM  # XXX: these should be propagated by SDL2?
     libICE
   ]
-  ++ lib.optional stdenv.isLinux libXext
-  ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ++ lib.optional stdenv.hostPlatform.isLinux libXext
+  ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     Cocoa
   ]);
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     install -Dm444 -t $out/share/applications ../xdg/org.widelands.Widelands.desktop
 
     for s in 16 32 48 64 128; do
diff --git a/pkgs/games/zaz/default.nix b/pkgs/games/zaz/default.nix
index 3af6f069a5aa..dca1d74a43ff 100644
--- a/pkgs/games/zaz/default.nix
+++ b/pkgs/games/zaz/default.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Puzzle game about arranging balls in triplets, like Luxor, Zuma, or Puzzle Bobble";
     homepage = "https://zaz.sourceforge.net/";
     license = licenses.gpl3;
diff --git a/pkgs/misc/base16-builder/node-packages.nix b/pkgs/misc/base16-builder/node-packages.nix
index f4120816cba9..b4bd9d9d41d2 100644
--- a/pkgs/misc/base16-builder/node-packages.nix
+++ b/pkgs/misc/base16-builder/node-packages.nix
@@ -8,7 +8,7 @@ let
   nodeEnv = import ../../development/node-packages/node-env.nix {
     inherit (pkgs) stdenv lib python2 runCommand writeTextFile writeShellScript;
     inherit pkgs nodejs;
-    libtool = if pkgs.stdenv.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
+    libtool = if pkgs.stdenv.hostPlatform.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
   };
 in
 import ./node-packages-generated.nix {
diff --git a/pkgs/misc/calaos/installer/default.nix b/pkgs/misc/calaos/installer/default.nix
index fc312b1d519c..853c187d38ae 100644
--- a/pkgs/misc/calaos/installer/default.nix
+++ b/pkgs/misc/calaos/installer/default.nix
@@ -16,7 +16,7 @@ mkDerivation rec {
 
   qmakeFlags = [ "REVISION=${version}" ];
 
-  installPhase = if stdenv.isDarwin then ''
+  installPhase = if stdenv.hostPlatform.isDarwin then ''
     mkdir -p $out/Applications
     cp -a calaos_installer.app $out/Applications
   '' else ''
diff --git a/pkgs/misc/cliscord/default.nix b/pkgs/misc/cliscord/default.nix
index bdfa620ef3f2..0617b0f8069b 100644
--- a/pkgs/misc/cliscord/default.nix
+++ b/pkgs/misc/cliscord/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-dmR49yyErahOUxR9pGW1oYy8Wq5SWOprK317u+JPBv4=";
   };
 
-  buildInputs = [ openssl ] ++ lib.optional stdenv.isDarwin Security;
+  buildInputs = [ openssl ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   nativeBuildInputs = [ pkg-config ];
 
diff --git a/pkgs/misc/cups/default.nix b/pkgs/misc/cups/default.nix
index 194074ce9cb6..4c9d2de10873 100644
--- a/pkgs/misc/cups/default.nix
+++ b/pkgs/misc/cups/default.nix
@@ -48,21 +48,21 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config removeReferencesTo ];
 
   buildInputs = [ zlib libjpeg libpng libtiff libusb1 gnutls libpaper ]
-    ++ lib.optionals stdenv.isLinux [ avahi pam dbus acl ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ avahi pam dbus acl ]
     ++ lib.optional enableSystemd systemd
-    ++ lib.optionals stdenv.isDarwin (with darwin; [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin; [
       configd apple_sdk.frameworks.ApplicationServices
     ]);
 
   propagatedBuildInputs = [ gmp ];
 
-  configurePlatforms = lib.optionals stdenv.isLinux [ "build" "host" ];
+  configurePlatforms = lib.optionals stdenv.hostPlatform.isLinux [ "build" "host" ];
   configureFlags = [
     "--localstatedir=/var"
     "--sysconfdir=/etc"
     "--enable-raw-printing"
     "--enable-threads"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "--enable-dbus"
     "--enable-pam"
     "--with-dbusdir=${placeholder "out"}/share/dbus-1"
@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
 
       "--with-systemd=$out/lib/systemd/system"
 
-      ${lib.optionalString stdenv.isDarwin ''
+      ${lib.optionalString stdenv.hostPlatform.isDarwin ''
         "--with-bundledir=$out"
       ''}
     )
@@ -111,7 +111,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   postInstall = ''
-      libexec=${if stdenv.isDarwin then "libexec/cups" else "lib/cups"}
+      libexec=${if stdenv.hostPlatform.isDarwin then "libexec/cups" else "lib/cups"}
       moveToOutput $libexec "$out"
 
       # $lib contains references to $out/share/cups.
@@ -130,7 +130,7 @@ stdenv.mkDerivation rec {
       for f in "$out"/lib/systemd/system/*; do
         substituteInPlace "$f" --replace "$lib/$libexec" "$out/$libexec"
       done
-    '' + lib.optionalString stdenv.isLinux ''
+    '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       # Use xdg-open when on Linux
       substituteInPlace "$out"/share/applications/cups.desktop \
         --replace "Exec=htmlview" "Exec=xdg-open"
diff --git a/pkgs/misc/cups/drivers/brgenml1lpr/default.nix b/pkgs/misc/cups/drivers/brgenml1lpr/default.nix
index d683e80b2893..98116903ec64 100644
--- a/pkgs/misc/cups/drivers/brgenml1lpr/default.nix
+++ b/pkgs/misc/cups/drivers/brgenml1lpr/default.nix
@@ -30,7 +30,7 @@
 let
   myPatchElf = file: ''
     patchelf --set-interpreter \
-      ${stdenv.cc.libc}/lib/ld-linux${lib.optionalString stdenv.is64bit "-x86-64"}.so.2 \
+      ${stdenv.cc.libc}/lib/ld-linux${lib.optionalString stdenv.hostPlatform.is64bit "-x86-64"}.so.2 \
       ${file}
   '';
 in
diff --git a/pkgs/misc/drivers/spacenavd/default.nix b/pkgs/misc/drivers/spacenavd/default.nix
index eb2fc165cccb..27ea69943cc1 100644
--- a/pkgs/misc/drivers/spacenavd/default.nix
+++ b/pkgs/misc/drivers/spacenavd/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [ libX11 ]
-    ++ lib.optional stdenv.isDarwin IOKit;
+    ++ lib.optional stdenv.hostPlatform.isDarwin IOKit;
 
   configureFlags = [ "--disable-debug" ];
 
diff --git a/pkgs/misc/frescobaldi/default.nix b/pkgs/misc/frescobaldi/default.nix
index f37826501d72..653c4747c933 100644
--- a/pkgs/misc/frescobaldi/default.nix
+++ b/pkgs/misc/frescobaldi/default.nix
@@ -56,7 +56,7 @@ python311Packages.buildPythonApplication rec {
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ sepi ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/frescobaldi.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/frescobaldi.x86_64-darwin
     mainProgram = "frescobaldi";
   };
 }
diff --git a/pkgs/misc/ghostscript/default.nix b/pkgs/misc/ghostscript/default.nix
index 466bd1c90938..c5cb69bea4b5 100644
--- a/pkgs/misc/ghostscript/default.nix
+++ b/pkgs/misc/ghostscript/default.nix
@@ -21,7 +21,7 @@
 , bash
 , buildPackages
 , openjpeg
-, cupsSupport ? config.ghostscript.cups or (!stdenv.isDarwin)
+, cupsSupport ? config.ghostscript.cups or (!stdenv.hostPlatform.isDarwin)
 , cups
 , x11Support ? cupsSupport
 , xorg # with CUPS, X11 only adds very little
@@ -125,7 +125,7 @@ stdenv.mkDerivation rec {
   buildFlags = [ "so" ]
     # without -headerpad, the following error occurs on Darwin when compiling with X11 support (as of 10.02.0)
     # error: install_name_tool: changing install names or rpaths can't be redone for: [...]libgs.dylib.10 (the program must be relinked, and you may need to use -headerpad or -headerpad_max_install_names)
-    ++ lib.optional (x11Support && stdenv.isDarwin) "LDFLAGS=-headerpad_max_install_names";
+    ++ lib.optional (x11Support && stdenv.hostPlatform.isDarwin) "LDFLAGS=-headerpad_max_install_names";
   installTargets = [ "soinstall" ];
 
   postInstall = ''
@@ -136,7 +136,7 @@ stdenv.mkDerivation rec {
     mkdir -p $fonts/share/fonts
     cp -rv ${fonts}/* "$fonts/share/fonts/"
     ln -s "$fonts/share/fonts" "$out/share/ghostscript/fonts"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     for file in $out/lib/*.dylib* ; do
       install_name_tool -id "$file" $file
     done
@@ -144,7 +144,7 @@ stdenv.mkDerivation rec {
 
   # dynamic library name only contains maj.min, eg. '9.53'
   dylib_version = lib.versions.majorMinor version;
-  preFixup = lib.optionalString stdenv.isDarwin ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -change libgs.dylib.$dylib_version $out/lib/libgs.dylib.$dylib_version $out/bin/gs
     install_name_tool -change libgs.dylib.$dylib_version $out/lib/libgs.dylib.$dylib_version $out/bin/gsx
   '';
diff --git a/pkgs/misc/jackaudio/default.nix b/pkgs/misc/jackaudio/default.nix
index 09e158da3ac3..54827497f846 100644
--- a/pkgs/misc/jackaudio/default.nix
+++ b/pkgs/misc/jackaudio/default.nix
@@ -20,7 +20,7 @@ let
 
   libOnly = prefix == "lib";
 
-  optDbus = if stdenv.isDarwin then null else shouldUsePkg dbus;
+  optDbus = if stdenv.hostPlatform.isDarwin then null else shouldUsePkg dbus;
   optPythonDBus = if libOnly then null else shouldUsePkg dbus-python;
   optLibffado = if libOnly then null else shouldUsePkg libffado;
   optAlsaLib = if libOnly then null else shouldUsePkg alsa-lib;
@@ -42,7 +42,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ pkg-config python makeWrapper wafHook ];
   buildInputs = [ libsamplerate libsndfile readline eigen celt
     optDbus optPythonDBus optLibffado optAlsaLib optLibopus
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     aften AudioUnit CoreAudio Accelerate libobjc
   ];
 
diff --git a/pkgs/misc/jackaudio/jack1.nix b/pkgs/misc/jackaudio/jack1.nix
index 428bb9685f47..d50f21f53fcb 100644
--- a/pkgs/misc/jackaudio/jack1.nix
+++ b/pkgs/misc/jackaudio/jack1.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation (finalAttrs: {
   passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "JACK audio connection kit";
     homepage = "https://jackaudio.org";
     license = with licenses; [ gpl2Plus lgpl21 ];
diff --git a/pkgs/misc/jackaudio/tools.nix b/pkgs/misc/jackaudio/tools.nix
index e0e51a0ba4d9..76826d30cae9 100644
--- a/pkgs/misc/jackaudio/tools.nix
+++ b/pkgs/misc/jackaudio/tools.nix
@@ -16,7 +16,7 @@
 , zita-alsa-pcmi
 , zita-resampler
 
-, enableAlsa ? stdenv.isLinux
+, enableAlsa ? stdenv.hostPlatform.isLinux
 }:
 
 stdenv.mkDerivation (final: {
diff --git a/pkgs/misc/lilypond/default.nix b/pkgs/misc/lilypond/default.nix
index 327882951d29..95bc57227e20 100644
--- a/pkgs/misc/lilypond/default.nix
+++ b/pkgs/misc/lilypond/default.nix
@@ -63,7 +63,7 @@ stdenv.mkDerivation rec {
     platforms = platforms.all;
   };
 
-  FONTCONFIG_FILE = lib.optional stdenv.isDarwin (makeFontsConf {
+  FONTCONFIG_FILE = lib.optional stdenv.hostPlatform.isDarwin (makeFontsConf {
     fontDirectories = [ freefont_ttf ];
   });
 }
diff --git a/pkgs/misc/moonfire-nvr/default.nix b/pkgs/misc/moonfire-nvr/default.nix
index d6a994ac3e68..67e5f129927c 100644
--- a/pkgs/misc/moonfire-nvr/default.nix
+++ b/pkgs/misc/moonfire-nvr/default.nix
@@ -54,7 +54,7 @@ in rustPlatform.buildRustPackage {
   buildInputs = [
     ncurses
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     Security
   ]);
 
diff --git a/pkgs/misc/opcua-client-gui/default.nix b/pkgs/misc/opcua-client-gui/default.nix
index c37568cfc9cb..226697060365 100644
--- a/pkgs/misc/opcua-client-gui/default.nix
+++ b/pkgs/misc/opcua-client-gui/default.nix
@@ -20,7 +20,7 @@ python3Packages.buildPythonApplication rec {
   };
 
   nativeBuildInputs = [ copyDesktopItems wrapQtAppsHook ]
-    ++ lib.optionals stdenv.isDarwin [ desktopToDarwinBundle ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ desktopToDarwinBundle ];
 
   makeWrapperArgs = [
     "\${qtWrapperArgs[@]}"
diff --git a/pkgs/misc/source-and-tags/default.nix b/pkgs/misc/source-and-tags/default.nix
index eb243aa4f9b8..9e73b77c59cf 100644
--- a/pkgs/misc/source-and-tags/default.nix
+++ b/pkgs/misc/source-and-tags/default.nix
@@ -58,7 +58,7 @@
                     # without this creating tag files for lifted-base fails
                     export LC_ALL=en_US.UTF-8
                     export LANG=en_US.UTF-8
-                    ${lib.optionalString stdenv.isLinux "export LOCALE_ARCHIVE=${glibcLocales}/lib/locale/locale-archive;"}
+                    ${lib.optionalString stdenv.hostPlatform.isLinux "export LOCALE_ARCHIVE=${glibcLocales}/lib/locale/locale-archive;"}
 
                     ${toString hasktags}/bin/hasktags --ignore-close-implementation --ctags .
                     mv tags \$TAG_FILE
diff --git a/pkgs/misc/stabber/default.nix b/pkgs/misc/stabber/default.nix
index fd64b3942b5a..5ca07007d14a 100644
--- a/pkgs/misc/stabber/default.nix
+++ b/pkgs/misc/stabber/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ pkg-config autoreconfHook ];
   buildInputs = [ glib expat libmicrohttpd ] ++
-    lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+    lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   meta = with lib; {
     description = "Stubbed XMPP Server";
diff --git a/pkgs/misc/t-rec/default.nix b/pkgs/misc/t-rec/default.nix
index ac99abb7e5cd..c67a8d60557b 100644
--- a/pkgs/misc/t-rec/default.nix
+++ b/pkgs/misc/t-rec/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ makeWrapper ];
   buildInputs = [ imagemagick ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv Foundation ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Foundation ];
 
   postInstall = ''
     wrapProgram "$out/bin/t-rec" --prefix PATH : "${binPath}"
diff --git a/pkgs/misc/tmux-plugins/default.nix b/pkgs/misc/tmux-plugins/default.nix
index dacf6ba1ef6f..d8da9f10164c 100644
--- a/pkgs/misc/tmux-plugins/default.nix
+++ b/pkgs/misc/tmux-plugins/default.nix
@@ -593,7 +593,7 @@ in rec {
       rev = "e91b178ff832b7bcbbf4d99d9f467f63fd1b76b5";
       sha256 = "1z8dfbwblrbmb8sgb0k8h1q0dvfdz7gw57las8nwd5gj6ss1jyvx";
     };
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       sed -e 's:reattach-to-user-namespace:${pkgs.reattach-to-user-namespace}/bin/reattach-to-user-namespace:g' -i $target/sensible.tmux
     '';
   };
diff --git a/pkgs/misc/urbit/default.nix b/pkgs/misc/urbit/default.nix
index aa78c949e5c0..955b16bf693e 100644
--- a/pkgs/misc/urbit/default.nix
+++ b/pkgs/misc/urbit/default.nix
@@ -4,8 +4,8 @@
 }:
 
 let
-  os = if stdenv.isDarwin then "macos" else "linux";
-  arch = if stdenv.isAarch64 then "aarch64" else "x86_64";
+  os = if stdenv.hostPlatform.isDarwin then "macos" else "linux";
+  arch = if stdenv.hostPlatform.isAarch64 then "aarch64" else "x86_64";
   platform = "${os}-${arch}";
 in
 stdenv.mkDerivation rec {
diff --git a/pkgs/misc/wiki-tui/default.nix b/pkgs/misc/wiki-tui/default.nix
index 1724fe435faa..4d96c78cb560 100644
--- a/pkgs/misc/wiki-tui/default.nix
+++ b/pkgs/misc/wiki-tui/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     ncurses
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   cargoHash = "sha256-XovbT+KC0va7yC5j7kf6t1SnXe1uyy1KI8FRV1AwkS0=";
 
diff --git a/pkgs/os-specific/bsd/freebsd/pkgs/make.nix b/pkgs/os-specific/bsd/freebsd/pkgs/make.nix
index ecf231c30414..a622e25f7a77 100644
--- a/pkgs/os-specific/bsd/freebsd/pkgs/make.nix
+++ b/pkgs/os-specific/bsd/freebsd/pkgs/make.nix
@@ -13,7 +13,7 @@ mkDerivation {
       export NIX_CFLAGS_COMPILE+=" -D_PATH_DEFSYSPATH=\"$out/share/mk\""
 
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace $BSDSRCDIR/share/mk/bsd.sys.mk \
         --replace '-Wl,--fatal-warnings' "" \
         --replace '-Wl,--warn-shared-textrel' ""
diff --git a/pkgs/os-specific/bsd/freebsd/pkgs/mkDerivation.nix b/pkgs/os-specific/bsd/freebsd/pkgs/mkDerivation.nix
index 4c2fe571999f..1a3b0f823253 100644
--- a/pkgs/os-specific/bsd/freebsd/pkgs/mkDerivation.nix
+++ b/pkgs/os-specific/bsd/freebsd/pkgs/mkDerivation.nix
@@ -89,14 +89,14 @@ lib.makeOverridable (
       # Since STRIP in `makeFlags` has to be a flag, not the binary itself
       STRIPBIN = "${stdenv'.cc.bintools.targetPrefix}strip";
     }
-    // lib.optionalAttrs stdenv'.isDarwin { MKRELRO = "no"; }
+    // lib.optionalAttrs stdenv'.hostPlatform.isDarwin { MKRELRO = "no"; }
     // lib.optionalAttrs (stdenv'.cc.isClang or false) {
       HAVE_LLVM = lib.versions.major (lib.getVersion stdenv'.cc.cc);
     }
     // lib.optionalAttrs (stdenv'.cc.isGNU or false) {
       HAVE_GCC = lib.versions.major (lib.getVersion stdenv'.cc.cc);
     }
-    // lib.optionalAttrs (stdenv'.isx86_32) { USE_SSP = "no"; }
+    // lib.optionalAttrs (stdenv'.hostPlatform.isx86_32) { USE_SSP = "no"; }
     // lib.optionalAttrs (attrs.headersOnly or false) {
       installPhase = "includesPhase";
       dontBuild = true;
diff --git a/pkgs/os-specific/bsd/freebsd/pkgs/mtree.nix b/pkgs/os-specific/bsd/freebsd/pkgs/mtree.nix
index bbcaff3a1c6a..f1cf4f9bd220 100644
--- a/pkgs/os-specific/bsd/freebsd/pkgs/mtree.nix
+++ b/pkgs/os-specific/bsd/freebsd/pkgs/mtree.nix
@@ -18,7 +18,7 @@ mkDerivation {
       libmd
       libnetbsd
     ]
-    ++ lib.optional (stdenv.isFreeBSD) libutil;
+    ++ lib.optional (stdenv.hostPlatform.isFreeBSD) libutil;
 
   postPatch = ''
     ln -s $BSDSRCDIR/contrib/mknod/*.c $BSDSRCDIR/contrib/mknod/*.h $BSDSRCDIR/contrib/mtree
@@ -32,7 +32,7 @@ mkDerivation {
           "-lnetbsd"
         ]
         ++ lib.optional compatIsNeeded "-legacy"
-        ++ lib.optional stdenv.isFreeBSD "-lutil"
+        ++ lib.optional stdenv.hostPlatform.isFreeBSD "-lutil"
       )
     }"
   '';
diff --git a/pkgs/os-specific/bsd/netbsd/pkgs/compat/package.nix b/pkgs/os-specific/bsd/netbsd/pkgs/compat/package.nix
index 40113028bbf1..ad83b0650202 100644
--- a/pkgs/os-specific/bsd/netbsd/pkgs/compat/package.nix
+++ b/pkgs/os-specific/bsd/netbsd/pkgs/compat/package.nix
@@ -118,7 +118,7 @@ mkDerivation (
         install -D $BSDSRCDIR/common/include/rpc/types.h $dev/include/rpc/types.h
         sed -i '1s;^;#include "nbtool_config.h"\n;' $dev/include/rpc/types.h
       ''
-      + lib.optionalString stdenv.isDarwin ''
+      + lib.optionalString stdenv.hostPlatform.isDarwin ''
         mkdir -p $dev/include/ssp
         touch $dev/include/ssp/ssp.h
       ''
diff --git a/pkgs/os-specific/bsd/netbsd/pkgs/libcurses.nix b/pkgs/os-specific/bsd/netbsd/pkgs/libcurses.nix
index 8d61bcfdf7d9..75ca446b708c 100644
--- a/pkgs/os-specific/bsd/netbsd/pkgs/libcurses.nix
+++ b/pkgs/os-specific/bsd/netbsd/pkgs/libcurses.nix
@@ -16,12 +16,12 @@ mkDerivation {
       "-D__va_list=va_list"
       "-D__warn_references(a,b)="
     ]
-    ++ lib.optional stdenv.isDarwin "-D__strong_alias(a,b)="
+    ++ lib.optional stdenv.hostPlatform.isDarwin "-D__strong_alias(a,b)="
   );
   propagatedBuildInputs = compatIfNeeded;
   MKDOC = "no"; # missing vfontedpr
   makeFlags = defaultMakeFlags ++ [ "LIBDO.terminfo=${libterminfo}/lib" ];
-  postPatch = lib.optionalString (!stdenv.isDarwin) ''
+  postPatch = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     substituteInPlace $COMPONENT_PATH/printw.c \
       --replace "funopen(win, NULL, __winwrite, NULL, NULL)" NULL \
       --replace "__strong_alias(vwprintw, vw_printw)" 'extern int vwprintw(WINDOW*, const char*, va_list) __attribute__ ((alias ("vw_printw")));'
diff --git a/pkgs/os-specific/bsd/netbsd/pkgs/mkDerivation.nix b/pkgs/os-specific/bsd/netbsd/pkgs/mkDerivation.nix
index eb010749ada1..e926557fc444 100644
--- a/pkgs/os-specific/bsd/netbsd/pkgs/mkDerivation.nix
+++ b/pkgs/os-specific/bsd/netbsd/pkgs/mkDerivation.nix
@@ -104,14 +104,14 @@ lib.makeOverridable (
       # TODO should CC wrapper set this?
       CPP = "${stdenv'.cc.targetPrefix}cpp";
     }
-    // lib.optionalAttrs stdenv'.isDarwin { MKRELRO = "no"; }
+    // lib.optionalAttrs stdenv'.hostPlatform.isDarwin { MKRELRO = "no"; }
     // lib.optionalAttrs (stdenv'.cc.isClang or false) {
       HAVE_LLVM = lib.versions.major (lib.getVersion stdenv'.cc.cc);
     }
     // lib.optionalAttrs (stdenv'.cc.isGNU or false) {
       HAVE_GCC = lib.versions.major (lib.getVersion stdenv'.cc.cc);
     }
-    // lib.optionalAttrs (stdenv'.isx86_32) { USE_SSP = "no"; }
+    // lib.optionalAttrs (stdenv'.hostPlatform.isx86_32) { USE_SSP = "no"; }
     // lib.optionalAttrs (attrs.headersOnly or false) {
       installPhase = "includesPhase";
       dontBuild = true;
diff --git a/pkgs/os-specific/bsd/netbsd/pkgs/uudecode.nix b/pkgs/os-specific/bsd/netbsd/pkgs/uudecode.nix
index 1e58df16ceee..da3c9bb05dc0 100644
--- a/pkgs/os-specific/bsd/netbsd/pkgs/uudecode.nix
+++ b/pkgs/os-specific/bsd/netbsd/pkgs/uudecode.nix
@@ -6,6 +6,6 @@
 
 mkDerivation {
   path = "usr.bin/uudecode";
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isLinux "-DNO_BASE64";
-  NIX_LDFLAGS = lib.optional stdenv.isDarwin "-lresolv";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isLinux "-DNO_BASE64";
+  NIX_LDFLAGS = lib.optional stdenv.hostPlatform.isDarwin "-lresolv";
 }
diff --git a/pkgs/os-specific/darwin/apple-sdk-11.0/default.nix b/pkgs/os-specific/darwin/apple-sdk-11.0/default.nix
index 7262400c3eb0..c64f011c0534 100644
--- a/pkgs/os-specific/darwin/apple-sdk-11.0/default.nix
+++ b/pkgs/os-specific/darwin/apple-sdk-11.0/default.nix
@@ -127,7 +127,7 @@ let
       }) bindgenHook;
     };
 
-    callPackage = newScope (lib.optionalAttrs stdenv.isDarwin (stdenvs // rec {
+    callPackage = newScope (lib.optionalAttrs stdenv.hostPlatform.isDarwin (stdenvs // rec {
       inherit (pkgs.darwin.apple_sdk_11_0) xcodebuild rustPlatform;
       darwin = pkgs.darwin.overrideScope (_: prev: {
         inherit (prev.darwin.apple_sdk_11_0)
diff --git a/pkgs/os-specific/darwin/apple-source-releases/diskdev_cmds/default.nix b/pkgs/os-specific/darwin/apple-source-releases/diskdev_cmds/default.nix
index b642b993df0e..787fc93da1f6 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/diskdev_cmds/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/diskdev_cmds/default.nix
@@ -2,8 +2,8 @@
 , libutil }:
 
 let
-  xnu-src = if stdenv.isAarch64 then macosPackages_11_0_1.xnu.src else xnu.src;
-  arch = if stdenv.isAarch64 then "arm" else "i386";
+  xnu-src = if stdenv.hostPlatform.isAarch64 then macosPackages_11_0_1.xnu.src else xnu.src;
+  arch = if stdenv.hostPlatform.isAarch64 then "arm" else "i386";
 in appleDerivation {
   patches = [
     # Fixes a build failure with newer versions of clang that make implicit int an error.
diff --git a/pkgs/os-specific/darwin/apple-source-releases/xnu/default.nix b/pkgs/os-specific/darwin/apple-source-releases/xnu/default.nix
index 1ba9a278ecc5..20a34e814d42 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/xnu/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/xnu/default.nix
@@ -5,7 +5,7 @@
 }:
 
 appleDerivation' (if headersOnly then stdenvNoCC else stdenv) (
-  let arch = if stdenv.isx86_64 then "x86_64" else "arm64";
+  let arch = if stdenv.hostPlatform.isx86_64 then "x86_64" else "arm64";
   in
   {
   depsBuildBuild = [ buildPackages.stdenv.cc ];
diff --git a/pkgs/os-specific/darwin/goku/default.nix b/pkgs/os-specific/darwin/goku/default.nix
index 13aadfce2404..4babe83c6351 100644
--- a/pkgs/os-specific/darwin/goku/default.nix
+++ b/pkgs/os-specific/darwin/goku/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
   pname = "goku";
   version = "0.6.0";
 
-  src = if stdenv.isAarch64 then
+  src = if stdenv.hostPlatform.isAarch64 then
     fetchurl {
       url = "https://github.com/yqrashawn/GokuRakuJoudo/releases/download/v${version}/goku-arm.zip";
       hash = "sha256-TIoda2kDckK1FBLAmKudsDs3LXO4J0KWiAD2JlFb4rk=";
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     joker
   ];
 
-  sourceRoot = if stdenv.isAarch64 then "goku" else ".";
+  sourceRoot = if stdenv.hostPlatform.isAarch64 then "goku" else ".";
 
   installPhase = ''
     chmod +x goku
diff --git a/pkgs/os-specific/darwin/noah/default.nix b/pkgs/os-specific/darwin/noah/default.nix
index 502a165c33d4..ed20f67e48e9 100644
--- a/pkgs/os-specific/darwin/noah/default.nix
+++ b/pkgs/os-specific/darwin/noah/default.nix
@@ -21,6 +21,6 @@ stdenv.mkDerivation rec {
     maintainers = [ ];
     platforms = platforms.darwin;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/os-specific/darwin/openwith/default.nix b/pkgs/os-specific/darwin/openwith/default.nix
index d28ed4942821..dbbd94fe4363 100644
--- a/pkgs/os-specific/darwin/openwith/default.nix
+++ b/pkgs/os-specific/darwin/openwith/default.nix
@@ -2,7 +2,7 @@
 
 let
   inherit (swiftPackages) apple_sdk stdenv swift;
-  arch = if stdenv.isAarch64 then "arm64" else "x86_64";
+  arch = if stdenv.hostPlatform.isAarch64 then "arm64" else "x86_64";
 in
 stdenv.mkDerivation rec {
   pname = "openwith";
diff --git a/pkgs/os-specific/linux/afuse/default.nix b/pkgs/os-specific/linux/afuse/default.nix
index df64c0d1f56c..33d950b76cd6 100644
--- a/pkgs/os-specific/linux/afuse/default.nix
+++ b/pkgs/os-specific/linux/afuse/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ fuse ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Fix the build on macOS with macFUSE installed
     substituteInPlace configure.ac --replace \
       'export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH' \
diff --git a/pkgs/os-specific/linux/dpdk/default.nix b/pkgs/os-specific/linux/dpdk/default.nix
index 3fd703c7ce1e..f49a723e2b0a 100644
--- a/pkgs/os-specific/linux/dpdk/default.nix
+++ b/pkgs/os-specific/linux/dpdk/default.nix
@@ -6,8 +6,8 @@
 , withExamples ? []
 , shared ? false
 , machine ? (
-    if stdenv.isx86_64 then "nehalem"
-    else if stdenv.isAarch64 then "generic"
+    if stdenv.hostPlatform.isx86_64 then "nehalem"
+    else if stdenv.hostPlatform.isAarch64 then "generic"
     else null
   )
 }:
diff --git a/pkgs/os-specific/linux/firmware/raspberrypi/armstubs.nix b/pkgs/os-specific/linux/firmware/raspberrypi/armstubs.nix
index 3f1a0ed04bb1..0393174d889d 100644
--- a/pkgs/os-specific/linux/firmware/raspberrypi/armstubs.nix
+++ b/pkgs/os-specific/linux/firmware/raspberrypi/armstubs.nix
@@ -32,8 +32,8 @@ stdenv.mkDerivation {
     "OBJCOPY7=${stdenv.cc.targetPrefix}objcopy"
     "OBJDUMP7=${stdenv.cc.targetPrefix}objdump"
   ]
-  ++ optionals (stdenv.isAarch64) [ "armstub8.bin" "armstub8-gic.bin" ]
-  ++ optionals (stdenv.isAarch32) [ "armstub7.bin" "armstub8-32.bin" "armstub8-32-gic.bin" ]
+  ++ optionals (stdenv.hostPlatform.isAarch64) [ "armstub8.bin" "armstub8-gic.bin" ]
+  ++ optionals (stdenv.hostPlatform.isAarch32) [ "armstub7.bin" "armstub8-32.bin" "armstub8-32-gic.bin" ]
   ;
 
   installPhase = ''
diff --git a/pkgs/os-specific/linux/firmware/raspberrypi/default.nix b/pkgs/os-specific/linux/firmware/raspberrypi/default.nix
index 5dede06d9269..02db2a2c82ad 100644
--- a/pkgs/os-specific/linux/firmware/raspberrypi/default.nix
+++ b/pkgs/os-specific/linux/firmware/raspberrypi/default.nix
@@ -28,6 +28,6 @@ stdenvNoCC.mkDerivation rec {
     maintainers = with maintainers; [ dezgeg ];
     # Hash mismatch on source, mystery.
     # Maybe due to https://github.com/NixOS/nix/issues/847
-    broken = stdenvNoCC.isDarwin;
+    broken = stdenvNoCC.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/os-specific/linux/fuse/common.nix b/pkgs/os-specific/linux/fuse/common.nix
index f4b8bfc5661a..cadf176b7c6e 100644
--- a/pkgs/os-specific/linux/fuse/common.nix
+++ b/pkgs/os-specific/linux/fuse/common.nix
@@ -24,7 +24,7 @@ in stdenv.mkDerivation rec {
 
   patches =
     lib.optional
-      (!isFuse3 && (stdenv.isAarch64 || stdenv.hostPlatform.isLoongArch64))
+      (!isFuse3 && (stdenv.hostPlatform.isAarch64 || stdenv.hostPlatform.isLoongArch64))
       (fetchpatch {
         url = "https://github.com/libfuse/libfuse/commit/914871b20a901e3e1e981c92bc42b1c93b7ab81b.patch";
         sha256 = "1w4j6f1awjrycycpvmlv0x5v9gprllh4dnbjxl4dyl2jgbkaw6pa";
diff --git a/pkgs/os-specific/linux/guvcview/default.nix b/pkgs/os-specific/linux/guvcview/default.nix
index e41f5c8e3c52..52a71d57199e 100644
--- a/pkgs/os-specific/linux/guvcview/default.nix
+++ b/pkgs/os-specific/linux/guvcview/default.nix
@@ -13,7 +13,7 @@
 , gsl
 , libpng
 , sfml
-, pulseaudioSupport ? config.pulseaudio or stdenv.isLinux
+, pulseaudioSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux
 , libpulseaudio ? null
 , useQt ? false
 , qtbase ? null
diff --git a/pkgs/os-specific/linux/kernel/common-config.nix b/pkgs/os-specific/linux/kernel/common-config.nix
index aeb78f1ad38a..d3226b767076 100644
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -182,7 +182,7 @@ let
 
       # Collect ECC errors and retire pages that fail too often
       RAS_CEC                   = yes;
-    } // lib.optionalAttrs (stdenv.is32bit) {
+    } // lib.optionalAttrs (stdenv.hostPlatform.is32bit) {
       # Enable access to the full memory range (aka PAE) on 32-bit architectures
       # This check isn't super accurate but it's close enough
       HIGHMEM                   = option yes;
@@ -214,7 +214,7 @@ let
     timer = {
       # Enable Full Dynticks System.
       # NO_HZ_FULL depends on HAVE_VIRT_CPU_ACCOUNTING_GEN depends on 64BIT
-      NO_HZ_FULL = lib.mkIf stdenv.is64bit yes;
+      NO_HZ_FULL = lib.mkIf stdenv.hostPlatform.is64bit yes;
     };
 
     # Enable NUMA.
@@ -411,7 +411,7 @@ let
     };
 
     video = let
-      whenHasDevicePrivate = lib.mkIf (!stdenv.isx86_32);
+      whenHasDevicePrivate = lib.mkIf (!stdenv.hostPlatform.isx86_32);
     in {
       # compile in DRM so simpledrm can load before initrd if necessary
       AGP = yes;
@@ -836,9 +836,9 @@ let
       KSM = yes;
       VIRT_DRIVERS = yes;
       # We need 64 GB (PAE) support for Xen guest support
-      HIGHMEM64G = { optional = true; tristate = lib.mkIf (!stdenv.is64bit) "y";};
+      HIGHMEM64G = { optional = true; tristate = lib.mkIf (!stdenv.hostPlatform.is64bit) "y";};
 
-      VFIO_PCI_VGA = lib.mkIf stdenv.is64bit yes;
+      VFIO_PCI_VGA = lib.mkIf stdenv.hostPlatform.is64bit yes;
 
       UDMABUF = yes;
 
@@ -940,7 +940,7 @@ let
 
       # Allows soft-dirty tracking on pages, used by CRIU.
       # See https://docs.kernel.org/admin-guide/mm/soft-dirty.html
-      MEM_SOFT_DIRTY = lib.mkIf (!stdenv.isx86_32) yes;
+      MEM_SOFT_DIRTY = lib.mkIf (!stdenv.hostPlatform.isx86_32) yes;
     };
 
     misc = let
diff --git a/pkgs/os-specific/linux/kernel/generic.nix b/pkgs/os-specific/linux/kernel/generic.nix
index 74e603623412..fdfc78235226 100644
--- a/pkgs/os-specific/linux/kernel/generic.nix
+++ b/pkgs/os-specific/linux/kernel/generic.nix
@@ -84,7 +84,7 @@ lib.makeOverridable ({ # The kernel source tarball.
 # cgit) that are needed here should be included directly in Nixpkgs as
 # files.
 
-assert stdenv.isLinux;
+assert stdenv.hostPlatform.isLinux;
 
 let
   # Dirty hack to make sure that `version` & `src` have
diff --git a/pkgs/os-specific/linux/kernel/linux-rpi.nix b/pkgs/os-specific/linux/kernel/linux-rpi.nix
index 8ea483fc2579..54c5ace09154 100644
--- a/pkgs/os-specific/linux/kernel/linux-rpi.nix
+++ b/pkgs/os-specific/linux/kernel/linux-rpi.nix
@@ -72,7 +72,7 @@ lib.overrideDerivation (buildLinux (args // {
   # Make copies of the DTBs named after the upstream names so that U-Boot finds them.
   # This is ugly as heck, but I don't know a better solution so far.
   postFixup = ''
-    dtbDir=${if stdenv.isAarch64 then "$out/dtbs/broadcom" else "$out/dtbs"}
+    dtbDir=${if stdenv.hostPlatform.isAarch64 then "$out/dtbs/broadcom" else "$out/dtbs"}
     rm $dtbDir/bcm283*.dtb
     copyDTB() {
       cp -v "$dtbDir/$1" "$dtbDir/$2"
diff --git a/pkgs/os-specific/linux/kernel/xanmod-kernels.nix b/pkgs/os-specific/linux/kernel/xanmod-kernels.nix
index e063a4148edc..5b6f24ae3183 100644
--- a/pkgs/os-specific/linux/kernel/xanmod-kernels.nix
+++ b/pkgs/os-specific/linux/kernel/xanmod-kernels.nix
@@ -59,7 +59,7 @@ let
       branch = lib.versions.majorMinor version;
       maintainers = with lib.maintainers; [ moni lovesegfault atemu shawn8901 zzzsy ];
       description = "Built with custom settings and new features built to provide a stable, responsive and smooth desktop experience";
-      broken = stdenv.isAarch64;
+      broken = stdenv.hostPlatform.isAarch64;
     };
   } // (args.argsOverride or { }));
 in
diff --git a/pkgs/os-specific/linux/kernel/zen-kernels.nix b/pkgs/os-specific/linux/kernel/zen-kernels.nix
index 113627e0fd5d..9b1dbc3c9bbe 100644
--- a/pkgs/os-specific/linux/kernel/zen-kernels.nix
+++ b/pkgs/os-specific/linux/kernel/zen-kernels.nix
@@ -120,7 +120,7 @@ let
       maintainers = with lib.maintainers; [ thiagokokada jerrysm64 ];
       description = "Built using the best configuration and kernel sources for desktop, multimedia, and gaming workloads." +
         lib.optionalString isLqx " (Same as linux_zen, but less aggressive release schedule and additional extra config)";
-      broken = stdenv.isAarch64;
+      broken = stdenv.hostPlatform.isAarch64;
     };
 
   } // (args.argsOverride or { }));
diff --git a/pkgs/os-specific/linux/libaio/default.nix b/pkgs/os-specific/linux/libaio/default.nix
index 4986f0abf4a3..080571ad71d1 100644
--- a/pkgs/os-specific/linux/libaio/default.nix
+++ b/pkgs/os-specific/linux/libaio/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     "prefix=${placeholder "out"}"
   ] ++ lib.optional stdenv.hostPlatform.isStatic "ENABLE_SHARED=0";
 
-  hardeningDisable = lib.optional (stdenv.isi686) "stackprotector";
+  hardeningDisable = lib.optional (stdenv.hostPlatform.isi686) "stackprotector";
 
   checkTarget = "partcheck"; # "check" needs root
 
diff --git a/pkgs/os-specific/linux/lsirec/default.nix b/pkgs/os-specific/linux/lsirec/default.nix
index 10da88b691d9..aab36459ae95 100644
--- a/pkgs/os-specific/linux/lsirec/default.nix
+++ b/pkgs/os-specific/linux/lsirec/default.nix
@@ -33,6 +33,6 @@ stdenv.mkDerivation rec {
     license = licenses.bsd2;
     maintainers = with maintainers; [ Luflosi ];
     # never built on aarch64-linux since first introduction in nixpkgs
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/os-specific/linux/mwprocapture/default.nix b/pkgs/os-specific/linux/mwprocapture/default.nix
index b0513f5663d4..c83596a1fbe0 100644
--- a/pkgs/os-specific/linux/mwprocapture/default.nix
+++ b/pkgs/os-specific/linux/mwprocapture/default.nix
@@ -2,7 +2,7 @@
 
 let
   bits =
-    if stdenv.is64bit then "64"
+    if stdenv.hostPlatform.is64bit then "64"
     else "32";
 
   libpath = lib.makeLibraryPath [ stdenv.cc.cc stdenv.cc.libc alsa-lib ];
diff --git a/pkgs/os-specific/linux/new-lg4ff/default.nix b/pkgs/os-specific/linux/new-lg4ff/default.nix
index a92ee9ae64b5..8eed8edbc166 100644
--- a/pkgs/os-specific/linux/new-lg4ff/default.nix
+++ b/pkgs/os-specific/linux/new-lg4ff/default.nix
@@ -31,6 +31,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2Only;
     maintainers = with maintainers; [ matthiasbenaets ];
     platforms = platforms.linux;
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/os-specific/linux/nfs-utils/default.nix b/pkgs/os-specific/linux/nfs-utils/default.nix
index 74f560992ade..5f0e62b1b811 100644
--- a/pkgs/os-specific/linux/nfs-utils/default.nix
+++ b/pkgs/os-specific/linux/nfs-utils/default.nix
@@ -106,7 +106,7 @@ stdenv.mkDerivation rec {
     '';
 
   # One test fails on mips.
-  # doCheck = !stdenv.isMips;
+  # doCheck = !stdenv.hostPlatform.isMips;
   # https://bugzilla.kernel.org/show_bug.cgi?id=203793
   doCheck = false;
 
diff --git a/pkgs/os-specific/linux/nsncd/default.nix b/pkgs/os-specific/linux/nsncd/default.nix
index 9acef3cd9342..4e0b76dac223 100644
--- a/pkgs/os-specific/linux/nsncd/default.nix
+++ b/pkgs/os-specific/linux/nsncd/default.nix
@@ -44,6 +44,6 @@ rustPlatform.buildRustPackage {
       picnoir
     ];
     # never built on aarch64-darwin, x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/os-specific/linux/pam_p11/default.nix b/pkgs/os-specific/linux/pam_p11/default.nix
index 0a7e02f4ad81..a1e1dc109a15 100644
--- a/pkgs/os-specific/linux/pam_p11/default.nix
+++ b/pkgs/os-specific/linux/pam_p11/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ pam libp11.passthru.openssl libp11 ]
-    ++ lib.optionals stdenv.isDarwin [ libintl ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libintl ];
 
   meta = with lib; {
     homepage = "https://github.com/OpenSC/pam_p11";
diff --git a/pkgs/os-specific/linux/pax-utils/default.nix b/pkgs/os-specific/linux/pax-utils/default.nix
index dcecfa4c13b8..ac4cae906a2b 100644
--- a/pkgs/os-specific/linux/pax-utils/default.nix
+++ b/pkgs/os-specific/linux/pax-utils/default.nix
@@ -4,7 +4,7 @@
 , buildPackages
 , docbook_xml_dtd_44
 , docbook_xsl
-, withLibcap ? stdenv.isLinux, libcap
+, withLibcap ? stdenv.hostPlatform.isLinux, libcap
 , pkg-config
 , meson
 , ninja
diff --git a/pkgs/os-specific/linux/prl-tools/default.nix b/pkgs/os-specific/linux/prl-tools/default.nix
index 4474b07229c2..15ca9f9212e4 100644
--- a/pkgs/os-specific/linux/prl-tools/default.nix
+++ b/pkgs/os-specific/linux/prl-tools/default.nix
@@ -80,7 +80,7 @@ stdenv.mkDerivation (finalAttrs: {
 
     undmg $src
     export sourceRoot=prl-tools-build
-    7z x "Parallels Desktop.app/Contents/Resources/Tools/prl-tools-lin${lib.optionalString stdenv.isAarch64 "-arm"}.iso" -o$sourceRoot
+    7z x "Parallels Desktop.app/Contents/Resources/Tools/prl-tools-lin${lib.optionalString stdenv.hostPlatform.isAarch64 "-arm"}.iso" -o$sourceRoot
     ( cd $sourceRoot/kmods; tar -xaf prl_mod.tar.gz )
 
     runHook postUnpack
@@ -111,12 +111,12 @@ stdenv.mkDerivation (finalAttrs: {
       cp prl_fs/SharedFolders/Guest/Linux/prl_fs/prl_fs.ko $out/lib/modules/${kernelVersion}/extra
       cp prl_fs_freeze/Snapshot/Guest/Linux/prl_freeze/prl_fs_freeze.ko $out/lib/modules/${kernelVersion}/extra
       cp prl_tg/Toolgate/Guest/Linux/prl_tg/prl_tg.ko $out/lib/modules/${kernelVersion}/extra
-      ${lib.optionalString stdenv.isAarch64
+      ${lib.optionalString stdenv.hostPlatform.isAarch64
       "cp prl_notifier/Installation/lnx/prl_notifier/prl_notifier.ko $out/lib/modules/${kernelVersion}/extra"}
     )
 
     ( # tools
-      cd tools/tools${if stdenv.isAarch64 then "-arm64" else if stdenv.isx86_64 then "64" else "32"}
+      cd tools/tools${if stdenv.hostPlatform.isAarch64 then "-arm64" else if stdenv.hostPlatform.isx86_64 then "64" else "32"}
       mkdir -p $out/lib
 
       # prltoolsd contains hardcoded /bin/bash path
diff --git a/pkgs/os-specific/linux/procps-ng/default.nix b/pkgs/os-specific/linux/procps-ng/default.nix
index da2c80934172..32a7f7865b12 100644
--- a/pkgs/os-specific/linux/procps-ng/default.nix
+++ b/pkgs/os-specific/linux/procps-ng/default.nix
@@ -14,7 +14,7 @@
   # system (or very similar like that found in Cygwin). The one
   # exception is ‘watch’ which is portable enough to run on pretty much
   # any UNIX-compatible system.
-, watchOnly ? !(stdenv.isLinux || stdenv.isCygwin)
+, watchOnly ? !(stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isCygwin)
 
 , binlore
 , procps
diff --git a/pkgs/os-specific/linux/rasdaemon/default.nix b/pkgs/os-specific/linux/rasdaemon/default.nix
index 35478732fb8c..5a1df895b4c0 100644
--- a/pkgs/os-specific/linux/rasdaemon/default.nix
+++ b/pkgs/os-specific/linux/rasdaemon/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
     libtraceevent
     (perl.withPackages (ps: with ps; [ DBI DBDSQLite ]))
   ]
-  ++ lib.optionals (!stdenv.isAarch64) [ dmidecode ];
+  ++ lib.optionals (!stdenv.hostPlatform.isAarch64) [ dmidecode ];
 
   configureFlags = [
     "--sysconfdir=/etc"
@@ -82,7 +82,7 @@ stdenv.mkDerivation rec {
     substituteInPlace $out/bin/ras-mc-ctl \
       --replace 'find_prog ("modprobe")  or exit (1)' '"${kmod}/bin/modprobe"'
   ''
-  + lib.optionalString (!stdenv.isAarch64) ''
+  + lib.optionalString (!stdenv.hostPlatform.isAarch64) ''
     substituteInPlace $out/bin/ras-mc-ctl \
       --replace 'find_prog ("dmidecode")' '"${dmidecode}/bin/dmidecode"'
   '';
diff --git a/pkgs/os-specific/linux/rtl8821ce/default.nix b/pkgs/os-specific/linux/rtl8821ce/default.nix
index 434397ebc7c1..532ed4998918 100644
--- a/pkgs/os-specific/linux/rtl8821ce/default.nix
+++ b/pkgs/os-specific/linux/rtl8821ce/default.nix
@@ -45,6 +45,6 @@ stdenv.mkDerivation (finalAttrs: {
       defelo
     ];
     broken =
-      stdenv.isAarch64 || ((lib.versions.majorMinor kernel.version) == "5.4" && kernel.isHardened);
+      stdenv.hostPlatform.isAarch64 || ((lib.versions.majorMinor kernel.version) == "5.4" && kernel.isHardened);
   };
 })
diff --git a/pkgs/os-specific/linux/shadow/default.nix b/pkgs/os-specific/linux/shadow/default.nix
index 98cb0c061ef5..682434fa0372 100644
--- a/pkgs/os-specific/linux/shadow/default.nix
+++ b/pkgs/os-specific/linux/shadow/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [ libbsd libxcrypt ]
-    ++ lib.optional (pam != null && stdenv.isLinux) pam
+    ++ lib.optional (pam != null && stdenv.hostPlatform.isLinux) pam
     ++ lib.optional withTcb tcb;
 
   patches = [
diff --git a/pkgs/os-specific/linux/tuxedo-keyboard/default.nix b/pkgs/os-specific/linux/tuxedo-keyboard/default.nix
index 2e0a13846f32..23285d5e26d2 100644
--- a/pkgs/os-specific/linux/tuxedo-keyboard/default.nix
+++ b/pkgs/os-specific/linux/tuxedo-keyboard/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   meta = {
-    broken = stdenv.isAarch64 || (lib.versionOlder kernel.version "5.5");
+    broken = stdenv.hostPlatform.isAarch64 || (lib.versionOlder kernel.version "5.5");
     description = "Keyboard and hardware I/O driver for TUXEDO Computers laptops";
     homepage = "https://github.com/tuxedocomputers/tuxedo-keyboard/";
     license = lib.licenses.gpl3Plus;
diff --git a/pkgs/os-specific/linux/util-linux/default.nix b/pkgs/os-specific/linux/util-linux/default.nix
index e393bf1ac08e..61b52ede774e 100644
--- a/pkgs/os-specific/linux/util-linux/default.nix
+++ b/pkgs/os-specific/linux/util-linux/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, fetchurl, pkg-config, zlib, shadow
-, capabilitiesSupport ? stdenv.isLinux
+, capabilitiesSupport ? stdenv.hostPlatform.isLinux
 , libcap_ng
 , libxcrypt
 , ncursesSupport ? true
@@ -12,8 +12,8 @@
 , translateManpages ? true
 , po4a
 , installShellFiles
-, writeSupport ? stdenv.isLinux
-, shadowSupport ? stdenv.isLinux
+, writeSupport ? stdenv.hostPlatform.isLinux
+, shadowSupport ? stdenv.hostPlatform.isLinux
 , memstreamHook
 , gitUpdater
 }:
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
   # the greater util-linux toolset.
   # Compatibility is maintained by symlinking the binaries from the
   # smaller outputs in the bin output.
-  outputs = [ "bin" "dev" "out" "lib" "man" ] ++ lib.optionals stdenv.isLinux [ "mount" ] ++ [ "login" ] ++ lib.optionals stdenv.isLinux [ "swap" ];
+  outputs = [ "bin" "dev" "out" "lib" "man" ] ++ lib.optionals stdenv.hostPlatform.isLinux [ "mount" ] ++ [ "login" ] ++ lib.optionals stdenv.hostPlatform.isLinux [ "swap" ];
   separateDebugInfo = true;
 
   postPatch = ''
@@ -91,7 +91,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     moveToOutput bin/mount "$mount"
     moveToOutput bin/umount "$mount"
     ln -svf "$mount/bin/"* $bin/bin/
@@ -101,7 +101,7 @@ stdenv.mkDerivation rec {
     moveToOutput sbin/sulogin "$login"
     prefix=$login _moveSbin
     ln -svf "$login/bin/"* $bin/bin/
-    '' + lib.optionalString stdenv.isLinux ''
+    '' + lib.optionalString stdenv.hostPlatform.isLinux ''
 
     moveToOutput sbin/swapon "$swap"
     moveToOutput sbin/swapoff "$swap"
diff --git a/pkgs/servers/amqp/rabbitmq-server/default.nix b/pkgs/servers/amqp/rabbitmq-server/default.nix
index 68cad9be1a69..f741858b011a 100644
--- a/pkgs/servers/amqp/rabbitmq-server/default.nix
+++ b/pkgs/servers/amqp/rabbitmq-server/default.nix
@@ -33,7 +33,7 @@ let
     procps
     gnused
     coreutils # used by helper scripts
-  ] ++ lib.optionals stdenv.isLinux [ systemd ]); # for systemd unit activation check
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ systemd ]); # for systemd unit activation check
 in
 
 stdenv.mkDerivation rec {
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ unzip xmlto docbook_xml_dtd_45 docbook_xsl zip rsync python3 ];
 
   buildInputs = [ erlang elixir libxml2 libxslt glibcLocales ]
-    ++ lib.optionals stdenv.isDarwin [ AppKit Carbon Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit Carbon Cocoa ];
 
   outputs = [ "out" "man" "doc" ];
 
diff --git a/pkgs/servers/apache-airflow/python-package.nix b/pkgs/servers/apache-airflow/python-package.nix
index 14c39ede5a85..d178a3d15064 100644
--- a/pkgs/servers/apache-airflow/python-package.nix
+++ b/pkgs/servers/apache-airflow/python-package.nix
@@ -244,7 +244,7 @@ buildPythonPackage rec {
     # https://github.com/apache/airflow/issues/33854
     substituteInPlace pyproject.toml \
       --replace '[project]' $'[project]\nname = "apache-airflow"\nversion = "${version}"'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Fix failing test on Hydra
     substituteInPlace airflow/utils/db.py \
       --replace "/tmp/sqlite_default.db" "$TMPDIR/sqlite_default.db"
@@ -287,7 +287,7 @@ buildPythonPackage rec {
     "tests/core/test_core.py"
   ];
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     "bash_operator_kill" # psutil.AccessDenied
   ];
 
diff --git a/pkgs/servers/bindle/default.nix b/pkgs/servers/bindle/default.nix
index b9ff3937e973..bfd9b2872bc3 100644
--- a/pkgs/servers/bindle/default.nix
+++ b/pkgs/servers/bindle/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
   doCheck = false; # Tests require a network
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ openssl ] ++ lib.optional stdenv.isDarwin Security;
+  buildInputs = [ openssl ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   cargoHash = "sha256-RECEeo0uoGO5bBe+r++zpTjYYX3BIkT58uht2MLYkN0=";
 
diff --git a/pkgs/servers/binserve/default.nix b/pkgs/servers/binserve/default.nix
index 62cddd3e0dbf..3864c7929945 100644
--- a/pkgs/servers/binserve/default.nix
+++ b/pkgs/servers/binserve/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
     sha256 = "sha256-Chm2xPB0BrLXSZslg9wnbDyHSJRQAvOtpH0Rw6w1q1s=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
   ];
 
diff --git a/pkgs/servers/blockbook/default.nix b/pkgs/servers/blockbook/default.nix
index f4ffeeb33471..47eb65bf70d2 100644
--- a/pkgs/servers/blockbook/default.nix
+++ b/pkgs/servers/blockbook/default.nix
@@ -54,7 +54,7 @@ buildGoModule rec {
     "-lstdc++"
   ];
 
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     ulimit -n 8192
   '';
 
diff --git a/pkgs/servers/clickhouse/default.nix b/pkgs/servers/clickhouse/default.nix
index 4b5071be7bd2..7589ae36304a 100644
--- a/pkgs/servers/clickhouse/default.nix
+++ b/pkgs/servers/clickhouse/default.nix
@@ -24,7 +24,7 @@
 let
   inherit (llvmPackages) stdenv;
   mkDerivation = (
-    if stdenv.isDarwin
+    if stdenv.hostPlatform.isDarwin
     then darwin.apple_sdk_11_0.llvmPackages_16.stdenv
     else llvmPackages.stdenv).mkDerivation;
 in mkDerivation rec {
@@ -83,10 +83,10 @@ in mkDerivation rec {
     python3
     perl
     llvmPackages.lld
-  ] ++ lib.optionals stdenv.isx86_64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isx86_64 [
     nasm
     yasm
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     llvmPackages.bintools
     findutils
     darwin.bootstrap_cmds
@@ -96,7 +96,7 @@ in mkDerivation rec {
     rustPlatform.cargoSetupHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   # their vendored version is too old and missing this patch: https://github.com/corrosion-rs/corrosion/pull/205
   corrosionSrc = if rustSupport then fetchFromGitHub {
@@ -154,7 +154,7 @@ in mkDerivation rec {
       --replace 'git rev-parse --show-toplevel' '$src'
     substituteInPlace utils/check-style/check-style \
       --replace 'git rev-parse --show-toplevel' '$src'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i 's|gfind|find|' cmake/tools.cmake
     sed -i 's|ggrep|grep|' cmake/tools.cmake
   '' + lib.optionalString rustSupport ''
@@ -168,7 +168,7 @@ in mkDerivation rec {
     popd
 
     cargoSetupPostPatchHook() { true; }
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Make sure Darwin invokes lld.ld64 not lld.
     substituteInPlace cmake/tools.cmake \
       --replace '--ld-path=''${LLD_PATH}' '-fuse-ld=lld'
@@ -183,10 +183,10 @@ in mkDerivation rec {
   env = {
     NIX_CFLAGS_COMPILE =
       # undefined reference to '__sync_val_compare_and_swap_16'
-      lib.optionalString stdenv.isx86_64 " -mcx16" +
+      lib.optionalString stdenv.hostPlatform.isx86_64 " -mcx16" +
       # Silence ``-Wimplicit-const-int-float-conversion` error in MemoryTracker.cpp and
       # ``-Wno-unneeded-internal-declaration` TreeOptimizer.cpp.
-      lib.optionalString stdenv.isDarwin " -Wno-implicit-const-int-float-conversion -Wno-unneeded-internal-declaration";
+      lib.optionalString stdenv.hostPlatform.isDarwin " -Wno-implicit-const-int-float-conversion -Wno-unneeded-internal-declaration";
   };
 
   # https://github.com/ClickHouse/ClickHouse/issues/49988
diff --git a/pkgs/servers/code-server/default.nix b/pkgs/servers/code-server/default.nix
index 5fd0f7867dcd..5662dc5d333b 100644
--- a/pkgs/servers/code-server/default.nix
+++ b/pkgs/servers/code-server/default.nix
@@ -133,9 +133,9 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     xorg.libX11
     xorg.libxkbfile
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libsecret
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Cocoa
     CoreServices
@@ -246,7 +246,7 @@ stdenv.mkDerivation (finalAttrs: {
         xargs -I {} sh -c 'jq -e ".scripts.postinstall" {}/package.json >/dev/null && yarn --cwd {} postinstall --frozen-lockfile --offline || true'
     patchShebangs .
 
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Use prebuilt binary for @parcel/watcher, which requires macOS SDK 10.13+
     # (see issue #101229).
     pushd ./lib/vscode/remote/node_modules/@parcel/watcher
diff --git a/pkgs/servers/confluencepot/default.nix b/pkgs/servers/confluencepot/default.nix
index d1aa0031f20f..89233d2063d5 100644
--- a/pkgs/servers/confluencepot/default.nix
+++ b/pkgs/servers/confluencepot/default.nix
@@ -22,7 +22,7 @@ buildGoModule rec {
       --replace "confluence.html" "$out/share/confluence.html"
   '';
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mv $out/bin/confluencePot $out/bin/${pname}
   '';
 
diff --git a/pkgs/servers/coturn/default.nix b/pkgs/servers/coturn/default.nix
index 8578940b660c..061ea520731b 100644
--- a/pkgs/servers/coturn/default.nix
+++ b/pkgs/servers/coturn/default.nix
@@ -55,6 +55,6 @@ stdenv.mkDerivation rec {
     license = with licenses; [ bsd3 ];
     platforms = platforms.all;
     maintainers = with maintainers; [ _0x4A6F ];
-    broken = stdenv.isDarwin; # 2018-10-21
+    broken = stdenv.hostPlatform.isDarwin; # 2018-10-21
   };
 }
diff --git a/pkgs/servers/dante/default.nix b/pkgs/servers/dante/default.nix
index 278c518a8106..9b99f51aef59 100644
--- a/pkgs/servers/dante/default.nix
+++ b/pkgs/servers/dante/default.nix
@@ -16,11 +16,11 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook ];
   buildInputs = [ pam libkrb5 cyrus_sasl miniupnpc libxcrypt ];
 
-  configureFlags = if !stdenv.isDarwin
+  configureFlags = if !stdenv.hostPlatform.isDarwin
     then [ "--with-libc=libc.so.6" ]
     else [ "--with-libc=libc${stdenv.hostPlatform.extensions.sharedLibrary}" ];
 
-  dontAddDisableDepTrack = stdenv.isDarwin;
+  dontAddDisableDepTrack = stdenv.hostPlatform.isDarwin;
 
   patches = [
     # Fixes several issues with `osint.m4` that causes incorrect check failures when using newer
diff --git a/pkgs/servers/dendrite/default.nix b/pkgs/servers/dendrite/default.nix
index a590036ea5a2..bb72aeb170db 100644
--- a/pkgs/servers/dendrite/default.nix
+++ b/pkgs/servers/dendrite/default.nix
@@ -52,7 +52,7 @@ buildGoModule rec {
   '';
 
   # PostgreSQL's request for a shared memory segment exceeded your kernel's SHMALL parameter
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   passthru.tests = {
     inherit (nixosTests) dendrite;
diff --git a/pkgs/servers/dico/default.nix b/pkgs/servers/dico/default.nix
index 658d477a483d..de43d3389b0b 100644
--- a/pkgs/servers/dico/default.nix
+++ b/pkgs/servers/dico/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   strictDeps = true;
 
   # ERROR: All 188 tests were run, 90 failed unexpectedly.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Flexible dictionary server and client implementing RFC 2229";
diff --git a/pkgs/servers/dns/bind/default.nix b/pkgs/servers/dns/bind/default.nix
index fde2c94306f2..545474200bf8 100644
--- a/pkgs/servers/dns/bind/default.nix
+++ b/pkgs/servers/dns/bind/default.nix
@@ -40,10 +40,10 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ perl pkg-config ];
   buildInputs = [ libidn2 libtool libxml2 openssl libuv nghttp2 jemalloc ]
-    ++ lib.optional stdenv.isLinux libcap
+    ++ lib.optional stdenv.hostPlatform.isLinux libcap
     ++ lib.optional enableGSSAPI libkrb5
     ++ lib.optional enablePython (python3.withPackages (ps: with ps; [ ply ]))
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
 
   depsBuildBuild = [ buildPackages.stdenv.cc ];
 
diff --git a/pkgs/servers/dns/coredns/default.nix b/pkgs/servers/dns/coredns/default.nix
index bb85bdb320e5..3cda1b6cf1dc 100644
--- a/pkgs/servers/dns/coredns/default.nix
+++ b/pkgs/servers/dns/coredns/default.nix
@@ -62,7 +62,7 @@ in buildGoModule rec {
     # it's a lint rather than a test of functionality, so it's safe to disable.
     substituteInPlace test/presubmit_test.go \
       --replace "TestImportOrdering" "SkipImportOrdering"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # loopback interface is lo0 on macos
     sed -E -i 's/\blo\b/lo0/' plugin/bind/setup_test.go
 
diff --git a/pkgs/servers/dns/doh-proxy-rust/default.nix b/pkgs/servers/dns/doh-proxy-rust/default.nix
index 244ec35a6768..5de2732b186a 100644
--- a/pkgs/servers/dns/doh-proxy-rust/default.nix
+++ b/pkgs/servers/dns/doh-proxy-rust/default.nix
@@ -12,7 +12,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-eXPAn2ziSdciZa6YrOIa7y7Lms681X+yVAD9HrvsZHg=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security libiconv ];
 
   passthru.tests = { inherit (nixosTests) doh-proxy-rust; };
 
diff --git a/pkgs/servers/dns/knot-dns/default.nix b/pkgs/servers/dns/knot-dns/default.nix
index fb71f0e3442f..5c3c5df26210 100644
--- a/pkgs/servers/dns/knot-dns/default.nix
+++ b/pkgs/servers/dns/knot-dns/default.nix
@@ -43,10 +43,10 @@ stdenv.mkDerivation rec {
     libmaxminddb # optional for geoip module (it's tiny)
     # without sphinx &al. for developer documentation
     fstrm protobufc # dnstap support
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libcap_ng systemd
     xdp-tools libbpf libmnl # XDP support (it's Linux kernel API)
-  ] ++ lib.optional stdenv.isDarwin zlib; # perhaps due to gnutls
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin zlib; # perhaps due to gnutls
 
   enableParallelBuilding = true;
 
@@ -62,7 +62,7 @@ stdenv.mkDerivation rec {
 
   passthru.tests = {
     inherit knot-resolver;
-  } // lib.optionalAttrs stdenv.isLinux {
+  } // lib.optionalAttrs stdenv.hostPlatform.isLinux {
     inherit (nixosTests) knot kea;
     prometheus-exporter = nixosTests.prometheus-exporters.knot;
     # Some dependencies are very version-sensitive, so the might get dropped
diff --git a/pkgs/servers/dns/knot-resolver/default.nix b/pkgs/servers/dns/knot-resolver/default.nix
index 198c7835fd8b..315a1e3aaf0d 100644
--- a/pkgs/servers/dns/knot-resolver/default.nix
+++ b/pkgs/servers/dns/knot-resolver/default.nix
@@ -64,7 +64,7 @@ unwrapped = stdenv.mkDerivation rec {
   # http://knot-resolver.readthedocs.io/en/latest/build.html#requirements
   buildInputs = [ knot-dns lua.lua libuv gnutls lmdb ]
     ## the rest are optional dependencies
-    ++ optionals stdenv.isLinux [ /*lib*/systemd libcap_ng ]
+    ++ optionals stdenv.hostPlatform.isLinux [ /*lib*/systemd libcap_ng ]
     ++ [ jemalloc nghttp2 ]
     ++ [ fstrm protobufc ] # dnstap support
     ;
@@ -78,7 +78,7 @@ unwrapped = stdenv.mkDerivation rec {
   ]
   ++ optional doInstallCheck "-Dunit_tests=enabled"
   ++ optional doInstallCheck "-Dconfig_tests=enabled"
-  ++ optional stdenv.isLinux "-Dsystemd_files=enabled" # used by NixOS service
+  ++ optional stdenv.hostPlatform.isLinux "-Dsystemd_files=enabled" # used by NixOS service
     #"-Dextra_tests=enabled" # not suitable as in-distro tests; many deps, too.
   ;
 
diff --git a/pkgs/servers/dns/pdns/default.nix b/pkgs/servers/dns/pdns/default.nix
index 1037c88229aa..e7633761a5d7 100644
--- a/pkgs/servers/dns/pdns/default.nix
+++ b/pkgs/servers/dns/pdns/default.nix
@@ -96,7 +96,7 @@ stdenv.mkDerivation (finalAttrs: {
     description = "Authoritative DNS server";
     homepage = "https://www.powerdns.com";
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     license = licenses.gpl2Only;
     maintainers = with maintainers; [ mic92 disassembler nickcao ];
   };
diff --git a/pkgs/servers/domoticz/default.nix b/pkgs/servers/domoticz/default.nix
index 72b4d71a62af..7f89645b3f97 100644
--- a/pkgs/servers/domoticz/default.nix
+++ b/pkgs/servers/domoticz/default.nix
@@ -85,7 +85,7 @@ stdenv.mkDerivation rec {
     changelog = "https://github.com/domoticz/domoticz/blob/${version}/History.txt";
     license = licenses.gpl3Plus;
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/domoticz.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/domoticz.x86_64-darwin
     mainProgram = "domoticz";
   };
 }
diff --git a/pkgs/servers/fedigroups/default.nix b/pkgs/servers/fedigroups/default.nix
index e823a5017ef0..764dee9ff4b1 100644
--- a/pkgs/servers/fedigroups/default.nix
+++ b/pkgs/servers/fedigroups/default.nix
@@ -41,7 +41,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optional stdenv.isDarwin Security;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     homepage = "https://git.ondrovo.com/MightyPork/group-actor#fedi-groups";
diff --git a/pkgs/servers/foundationdb/cmake.nix b/pkgs/servers/foundationdb/cmake.nix
index bc0a17166631..287809a451d7 100644
--- a/pkgs/servers/foundationdb/cmake.nix
+++ b/pkgs/servers/foundationdb/cmake.nix
@@ -81,7 +81,7 @@ let
           # Needed with GCC 12
           "-Wno-error=missing-template-keyword"
           # Needed to compile on aarch64
-          (lib.optionalString stdenv.isAarch64 "-march=armv8-a+crc")
+          (lib.optionalString stdenv.hostPlatform.isAarch64 "-march=armv8-a+crc")
         ];
 
         inherit patches;
diff --git a/pkgs/servers/frr/default.nix b/pkgs/servers/frr/default.nix
index 76d0dc8b2a8f..bcb829d716bf 100644
--- a/pkgs/servers/frr/default.nix
+++ b/pkgs/servers/frr/default.nix
@@ -127,7 +127,7 @@ stdenv.mkDerivation (finalAttrs: {
     readline
     rtrlib
     zeromq
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libcap
   ] ++ lib.optionals snmpSupport [
     net-snmp
diff --git a/pkgs/servers/ftp/bftpd/default.nix b/pkgs/servers/ftp/bftpd/default.nix
index 0aba1e90a164..895e3cd063fc 100644
--- a/pkgs/servers/ftp/bftpd/default.nix
+++ b/pkgs/servers/ftp/bftpd/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   # utmp.h is deprecated on aarch64-darwin
-  postPatch = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) ''
+  postPatch = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     for file in login.*; do
       substituteInPlace $file --replace "#ifdef HAVE_UTMP_H" "#if 0"
     done
diff --git a/pkgs/servers/gemini/stargazer/default.nix b/pkgs/servers/gemini/stargazer/default.nix
index 8aae6fa7b7fe..4c6b178ae37b 100644
--- a/pkgs/servers/gemini/stargazer/default.nix
+++ b/pkgs/servers/gemini/stargazer/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles scdoc ];
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   postInstall = ''
     scdoc < doc/stargazer.scd  > stargazer.1
diff --git a/pkgs/servers/geospatial/martin/default.nix b/pkgs/servers/geospatial/martin/default.nix
index d871c79d6c20..dbd1c527ef6a 100644
--- a/pkgs/servers/geospatial/martin/default.nix
+++ b/pkgs/servers/geospatial/martin/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
   checkFlags = [
     "--skip function_source_schemas"
diff --git a/pkgs/servers/gotosocial/default.nix b/pkgs/servers/gotosocial/default.nix
index 3f57180795ee..c313b5f8d5cb 100644
--- a/pkgs/servers/gotosocial/default.nix
+++ b/pkgs/servers/gotosocial/default.nix
@@ -40,7 +40,7 @@ buildGoModule rec {
   '';
 
   # tests are working only on x86_64-linux
-  # doCheck = stdenv.isLinux && stdenv.isx86_64;
+  # doCheck = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64;
   # checks are currently very unstable in our setup, so we should test manually for now
   doCheck = false;
 
diff --git a/pkgs/servers/gpsd/default.nix b/pkgs/servers/gpsd/default.nix
index ab1668ccfb92..4b9269ab6692 100644
--- a/pkgs/servers/gpsd/default.nix
+++ b/pkgs/servers/gpsd/default.nix
@@ -11,7 +11,7 @@
 , dbus
 , libusb1
 , ncurses
-, kppsSupport ? stdenv.isLinux, pps-tools
+, kppsSupport ? stdenv.hostPlatform.isLinux, pps-tools
 , python3Packages
 
 # optional deps for GUI packages
diff --git a/pkgs/servers/home-assistant/default.nix b/pkgs/servers/home-assistant/default.nix
index a664cf0fa9d7..4a4a6b8eed80 100644
--- a/pkgs/servers/home-assistant/default.nix
+++ b/pkgs/servers/home-assistant/default.nix
@@ -537,7 +537,7 @@ in python.pkgs.buildPythonApplication rec {
   makeWrapperArgs = lib.optional skipPip "--add-flags --skip-pip";
 
   # upstream only tests on Linux, so do we.
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
 
   nativeCheckInputs = with python.pkgs; [
     # test infrastructure (selectively from requirement_test.txt)
diff --git a/pkgs/servers/home-automation/evcc/default.nix b/pkgs/servers/home-automation/evcc/default.nix
index d7377a5d3e6f..5f93c5586719 100644
--- a/pkgs/servers/home-automation/evcc/default.nix
+++ b/pkgs/servers/home-automation/evcc/default.nix
@@ -67,7 +67,7 @@ buildGo123Module rec {
     make ui
   '';
 
-  doCheck = !stdenv.isDarwin; # darwin sandbox limitations around network access, access to /etc/protocols and likely more
+  doCheck = !stdenv.hostPlatform.isDarwin; # darwin sandbox limitations around network access, access to /etc/protocols and likely more
 
   checkFlags = let
     skippedTests = [
diff --git a/pkgs/servers/homepage-dashboard/default.nix b/pkgs/servers/homepage-dashboard/default.nix
index 0b957e6337b9..dde6162438cb 100644
--- a/pkgs/servers/homepage-dashboard/default.nix
+++ b/pkgs/servers/homepage-dashboard/default.nix
@@ -50,9 +50,9 @@ buildNpmPackage rec {
     patchShebangs .next/standalone/server.js
   '';
 
-  nativeBuildInputs = [ git ] ++ lib.optionals stdenv.isDarwin [ cctools ];
+  nativeBuildInputs = [ git ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools ];
 
-  buildInputs = [ nodePackages.node-gyp-build ] ++ lib.optionals stdenv.isDarwin [ IOKit ];
+  buildInputs = [ nodePackages.node-gyp-build ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit ];
 
   env.PYTHON = "${python3}/bin/python";
 
@@ -107,6 +107,6 @@ buildNpmPackage rec {
     license = lib.licenses.gpl3;
     maintainers = with lib.maintainers; [ jnsgruk ];
     platforms = lib.platforms.all;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/servers/http/apache-httpd/2.4.nix b/pkgs/servers/http/apache-httpd/2.4.nix
index c0ebb2e8bfcc..2d9ac45b8e82 100644
--- a/pkgs/servers/http/apache-httpd/2.4.nix
+++ b/pkgs/servers/http/apache-httpd/2.4.nix
@@ -41,11 +41,11 @@ stdenv.mkDerivation rec {
     lib.optional brotliSupport brotli ++
     lib.optional sslSupport openssl ++
     lib.optional modTlsSupport rustls-ffi ++
-    lib.optional (modTlsSupport && stdenv.isDarwin) Foundation ++
+    lib.optional (modTlsSupport && stdenv.hostPlatform.isDarwin) Foundation ++
     lib.optional ldapSupport openldap ++    # there is no --with-ldap flag
     lib.optional libxml2Support libxml2 ++
     lib.optional http2Support nghttp2 ++
-    lib.optional stdenv.isDarwin libiconv;
+    lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   postPatch = ''
     sed -i config.layout -e "s|installbuilddir:.*|installbuilddir: $dev/share/build|"
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
   '';
 
   # Required for ‘pthread_cancel’.
-  NIX_LDFLAGS = lib.optionalString (!stdenv.isDarwin) "-lgcc_s";
+  NIX_LDFLAGS = lib.optionalString (!stdenv.hostPlatform.isDarwin) "-lgcc_s";
 
   configureFlags = [
     "--with-apr=${apr.dev}"
diff --git a/pkgs/servers/http/apache-modules/mod_python/default.nix b/pkgs/servers/http/apache-modules/mod_python/default.nix
index ddd33184e046..bebd1278acc2 100644
--- a/pkgs/servers/http/apache-modules/mod_python/default.nix
+++ b/pkgs/servers/http/apache-modules/mod_python/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     apacheHttpd
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libintl
   ];
 
diff --git a/pkgs/servers/http/couchdb/3.nix b/pkgs/servers/http/couchdb/3.nix
index 87e80976b8c5..092c13f070a1 100644
--- a/pkgs/servers/http/couchdb/3.nix
+++ b/pkgs/servers/http/couchdb/3.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
     substituteInPlace src/couch/rebar.config.script --replace '/usr/include/mozjs-91' "${spidermonkey_91.dev}/include/mozjs-91"
     substituteInPlace configure --replace '/usr/include/''${SM_HEADERS}' "${spidermonkey_91.dev}/include/mozjs-91"
     patchShebangs bin/rebar
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # LTO with Clang produces LLVM bitcode, which causes linking to fail quietly.
     # (There are warnings, but no hard errors, and it produces an empty dylib.)
     substituteInPlace src/jiffy/rebar.config.script --replace '"-flto"' '""'
diff --git a/pkgs/servers/http/dufs/default.nix b/pkgs/servers/http/dufs/default.nix
index be7ed60083ed..b7dfb2d3b643 100644
--- a/pkgs/servers/http/dufs/default.nix
+++ b/pkgs/servers/http/dufs/default.nix
@@ -21,13 +21,13 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
   # FIXME: checkPhase on darwin will leave some zombie spawn processes
   # see https://github.com/NixOS/nixpkgs/issues/205620
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   checkFlags = [
     # tests depend on network interface, may fail with virtual IPs.
     "--skip=validate_printed_urls"
diff --git a/pkgs/servers/http/merecat/default.nix b/pkgs/servers/http/merecat/default.nix
index 6231fb9e2ad2..344f81da2ff7 100644
--- a/pkgs/servers/http/merecat/default.nix
+++ b/pkgs/servers/http/merecat/default.nix
@@ -47,6 +47,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with maintainers; [ fgaz ];
     platforms = platforms.all;
     # Strange header and/or linker errors
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/servers/http/nginx/generic.nix b/pkgs/servers/http/nginx/generic.nix
index 9369259ff65e..266c09755ab0 100644
--- a/pkgs/servers/http/nginx/generic.nix
+++ b/pkgs/servers/http/nginx/generic.nix
@@ -129,7 +129,7 @@ stdenv.mkDerivation {
   ] ++ lib.optionals (stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "11") [
     # fix build vts module on gcc11
     "-Wno-error=stringop-overread"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-Wno-error=deprecated-declarations"
     "-Wno-error=gnu-folding-constant"
     "-Wno-error=unused-but-set-variable"
@@ -173,7 +173,7 @@ stdenv.mkDerivation {
 
   inherit postPatch;
 
-  hardeningEnable = lib.optional (!stdenv.isDarwin) "pie";
+  hardeningEnable = lib.optional (!stdenv.hostPlatform.isDarwin) "pie";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/servers/http/tengine/default.nix b/pkgs/servers/http/tengine/default.nix
index 6f7ff9ceb765..bddb334e8c5d 100644
--- a/pkgs/servers/http/tengine/default.nix
+++ b/pkgs/servers/http/tengine/default.nix
@@ -100,11 +100,11 @@ stdenv.mkDerivation rec {
     ++ map (mod: "--add-module=${mod.src}") modules;
 
   env.NIX_CFLAGS_COMPILE = "-I${libxml2.dev}/include/libxml2 -Wno-error=implicit-fallthrough"
-    + optionalString stdenv.isDarwin " -Wno-error=deprecated-declarations";
+    + optionalString stdenv.hostPlatform.isDarwin " -Wno-error=deprecated-declarations";
 
   preConfigure = (lib.concatMapStringsSep "\n" (mod: mod.preConfigure or "") modules);
 
-  hardeningEnable = optional (!stdenv.isDarwin) "pie";
+  hardeningEnable = optional (!stdenv.hostPlatform.isDarwin) "pie";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/servers/http/trafficserver/default.nix b/pkgs/servers/http/trafficserver/default.nix
index 59b199bd9a2a..e0b20f68bf06 100644
--- a/pkgs/servers/http/trafficserver/default.nix
+++ b/pkgs/servers/http/trafficserver/default.nix
@@ -18,9 +18,9 @@
 , curl
 , withCurses ? true
 , ncurses
-, withCap ? stdenv.isLinux
+, withCap ? stdenv.hostPlatform.isLinux
 , libcap
-, withUnwind ? stdenv.isLinux
+, withUnwind ? stdenv.hostPlatform.isLinux
 , libunwind
 # optional dependencies
 , withBrotli ? false
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
   # [2]: https://github.com/apache/trafficserver/blob/3fd2c60/configure.ac#L742-L788
   nativeBuildInputs = [ makeWrapper pkg-config file python3 ]
     ++ (with perlPackages; [ perl ExtUtilsMakeMaker ])
-    ++ lib.optionals stdenv.isLinux [ linuxHeaders ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ linuxHeaders ];
 
   buildInputs = [
     openssl
@@ -95,10 +95,10 @@ stdenv.mkDerivation rec {
       tools/check-unused-dependencies
 
     substituteInPlace configure --replace '/usr/bin/file' '${file}/bin/file'
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace configure \
       --replace '/usr/include/linux' '${linuxHeaders}/include/linux'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # 'xcrun leaks' probably requires non-free XCode
     substituteInPlace iocore/net/test_certlookup.cc \
       --replace 'xcrun leaks' 'true'
diff --git a/pkgs/servers/imgproxy/default.nix b/pkgs/servers/imgproxy/default.nix
index 5388376720c9..52a871092270 100644
--- a/pkgs/servers/imgproxy/default.nix
+++ b/pkgs/servers/imgproxy/default.nix
@@ -17,7 +17,7 @@ buildGoModule rec {
   nativeBuildInputs = [ pkg-config gobject-introspection ];
 
   buildInputs = [ vips ]
-    ++ lib.optionals stdenv.isDarwin [ libunwind ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libunwind ];
 
   preBuild = ''
     export CGO_LDFLAGS_ALLOW='-(s|w)'
diff --git a/pkgs/servers/irc/solanum/default.nix b/pkgs/servers/irc/solanum/default.nix
index e70d6cc0a8e6..b31a7e16cd1f 100644
--- a/pkgs/servers/irc/solanum/default.nix
+++ b/pkgs/servers/irc/solanum/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
     "--localstatedir=/var/lib"
     "--with-rundir=/run"
     "--with-logdir=/var/log"
-  ] ++ lib.optionals (stdenv.isLinux) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux) [
     "--enable-sctp=${lksctp-tools.out}/lib"
   ];
 
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
     sqlite
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   enableParallelBuilding = true;
   # Missing install depends:
diff --git a/pkgs/servers/jackett/default.nix b/pkgs/servers/jackett/default.nix
index 64ce9873f45f..b0d5ffaa17cf 100644
--- a/pkgs/servers/jackett/default.nix
+++ b/pkgs/servers/jackett/default.nix
@@ -28,7 +28,7 @@ buildDotnetModule rec {
 
   runtimeDeps = [ openssl ];
 
-  doCheck = !(stdenv.isDarwin && stdenv.isAarch64); # mono is not available on aarch64-darwin
+  doCheck = !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64); # mono is not available on aarch64-darwin
   nativeCheckInputs = [ mono ];
   testProjectFile = "src/Jackett.Test/Jackett.Test.csproj";
 
diff --git a/pkgs/servers/krill/default.nix b/pkgs/servers/krill/default.nix
index a8847215d65c..f310b4d020ef 100644
--- a/pkgs/servers/krill/default.nix
+++ b/pkgs/servers/krill/default.nix
@@ -20,14 +20,14 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-Z12fUK4TUgk38/vNAt8RWLFGLc8WnZAgHWz0xl1QKLI=";
 
-  buildInputs = [ openssl ] ++ lib.optional stdenv.isDarwin Security;
+  buildInputs = [ openssl ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
   nativeBuildInputs = [ pkg-config ];
 
   # Needed to get openssl-sys to use pkgconfig.
   OPENSSL_NO_VENDOR = 1;
 
   # disable failing tests on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "RPKI Certificate Authority and Publication Server written in Rust";
diff --git a/pkgs/servers/lidarr/default.nix b/pkgs/servers/lidarr/default.nix
index 279a099c9c3c..6c5e88633e96 100644
--- a/pkgs/servers/lidarr/default.nix
+++ b/pkgs/servers/lidarr/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchurl, mono, libmediainfo, sqlite, curl, chromaprint, makeWrapper, icu, dotnet-runtime, openssl, nixosTests, zlib }:
 
 let
-  os = if stdenv.isDarwin then "osx" else "linux";
+  os = if stdenv.hostPlatform.isDarwin then "osx" else "linux";
   arch = {
     x86_64-linux = "x64";
     aarch64-linux = "arm64";
diff --git a/pkgs/servers/mail/dovecot/default.nix b/pkgs/servers/mail/dovecot/default.nix
index e7be597d7e4f..7a2c42fad1f9 100644
--- a/pkgs/servers/mail/dovecot/default.nix
+++ b/pkgs/servers/mail/dovecot/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ perl pkg-config ];
   buildInputs =
     [ openssl bzip2 zlib lz4 clucene_core_2 icu openldap libsodium libstemmer cyrus_sasl.dev ]
-    ++ lib.optionals (stdenv.isLinux) [ systemd pam libcap inotify-tools ]
+    ++ lib.optionals (stdenv.hostPlatform.isLinux) [ systemd pam libcap inotify-tools ]
     ++ lib.optional withMySQL libmysqlclient
     ++ lib.optional withPgSQL postgresql
     ++ lib.optional withSQLite sqlite
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
 
     # DES-encrypted passwords are not supported by NixPkgs anymore
     sed '/test_password_scheme("CRYPT"/d' -i src/auth/test-libpassword.c
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     export systemdsystemunitdir=$out/etc/systemd/system
   '';
 
@@ -66,7 +66,7 @@ stdenv.mkDerivation rec {
       url = "https://salsa.debian.org/debian/dovecot/-/raw/debian/1%252.3.19.1+dfsg1-2/debian/patches/Support-openssl-3.0.patch";
       hash = "sha256-PbBB1jIY3jIC8Js1NY93zkV0gISGUq7Nc67Ul5tN7sw=";
     })
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # fix timespec calls
     ./timespec.patch
   ];
@@ -86,9 +86,9 @@ stdenv.mkDerivation rec {
     "--with-lucene"
     "--with-icu"
   ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
-    "i_cv_epoll_works=${if stdenv.isLinux then "yes" else "no"}"
-    "i_cv_posix_fallocate_works=${if stdenv.isDarwin then "no" else "yes"}"
-    "i_cv_inotify_works=${if stdenv.isLinux then "yes" else "no"}"
+    "i_cv_epoll_works=${if stdenv.hostPlatform.isLinux then "yes" else "no"}"
+    "i_cv_posix_fallocate_works=${if stdenv.hostPlatform.isDarwin then "no" else "yes"}"
+    "i_cv_inotify_works=${if stdenv.hostPlatform.isLinux then "yes" else "no"}"
     "i_cv_signed_size_t=no"
     "i_cv_signed_time_t=yes"
     "i_cv_c99_vsnprintf=yes"
@@ -100,14 +100,14 @@ stdenv.mkDerivation rec {
     "lib_cv_va_copy=yes"
     "lib_cv___va_copy=yes"
     "lib_cv_va_val_copy=yes"
-  ] ++ lib.optional stdenv.isLinux "--with-systemd"
-    ++ lib.optional stdenv.isDarwin "--enable-static"
+  ] ++ lib.optional stdenv.hostPlatform.isLinux "--with-systemd"
+    ++ lib.optional stdenv.hostPlatform.isDarwin "--enable-static"
     ++ lib.optional withMySQL "--with-mysql"
     ++ lib.optional withPgSQL "--with-pgsql"
     ++ lib.optional withSQLite "--with-sqlite"
     ++ lib.optional withLua "--with-lua";
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     homepage = "https://dovecot.org/";
diff --git a/pkgs/servers/mail/dovecot/plugins/fts_xapian/default.nix b/pkgs/servers/mail/dovecot/plugins/fts_xapian/default.nix
index 283e47965110..78bb5b1e1cc4 100644
--- a/pkgs/servers/mail/dovecot/plugins/fts_xapian/default.nix
+++ b/pkgs/servers/mail/dovecot/plugins/fts_xapian/default.nix
@@ -31,6 +31,6 @@ stdenv.mkDerivation rec {
     license = licenses.lgpl21Only;
     maintainers = with maintainers; [ julm symphorien ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/dovecot_fts_xapian.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/dovecot_fts_xapian.x86_64-darwin
   };
 }
diff --git a/pkgs/servers/mail/mailpit/default.nix b/pkgs/servers/mail/mailpit/default.nix
index fd8f01674d80..c29baacd447c 100644
--- a/pkgs/servers/mail/mailpit/default.nix
+++ b/pkgs/servers/mail/mailpit/default.nix
@@ -39,7 +39,7 @@ let
       hash = source.npmDepsHash;
     };
 
-    env = lib.optionalAttrs (stdenv.isDarwin && stdenv.isx86_64) {
+    env = lib.optionalAttrs (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) {
       # Make sure libc++ uses `posix_memalign` instead of `aligned_alloc` on x86_64-darwin.
       # Otherwise, nodejs would require the 11.0 SDK and macOS 10.15+.
       NIX_CFLAGS_COMPILE = "-D__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__=101300";
diff --git a/pkgs/servers/mail/public-inbox/default.nix b/pkgs/servers/mail/public-inbox/default.nix
index 05dc98b466d4..72caae6a5b05 100644
--- a/pkgs/servers/mail/public-inbox/default.nix
+++ b/pkgs/servers/mail/public-inbox/default.nix
@@ -126,7 +126,7 @@ buildPerlPackage rec {
     man
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   nativeCheckInputs = [
     curl
     git
@@ -138,7 +138,7 @@ buildPerlPackage rec {
     PlackTestExternalServer
     TestSimple13
     XMLTreePP
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     LinuxInotify2
   ];
   preCheck = ''
diff --git a/pkgs/servers/mail/rspamd/default.nix b/pkgs/servers/mail/rspamd/default.nix
index aff57ef0e137..65fec7bad3f5 100644
--- a/pkgs/servers/mail/rspamd/default.nix
+++ b/pkgs/servers/mail/rspamd/default.nix
@@ -24,12 +24,12 @@
   zstd,
   libarchive,
   withBlas ? true,
-  withHyperscan ? stdenv.isx86_64,
-  withLuaJIT ? stdenv.isx86_64,
+  withHyperscan ? stdenv.hostPlatform.isx86_64,
+  withLuaJIT ? stdenv.hostPlatform.isx86_64,
   nixosTests,
 }:
 
-assert withHyperscan -> stdenv.isx86_64;
+assert withHyperscan -> stdenv.hostPlatform.isx86_64;
 
 stdenv.mkDerivation rec {
   pname = "rspamd";
diff --git a/pkgs/servers/matrix-conduit/default.nix b/pkgs/servers/matrix-conduit/default.nix
index 91cdded5a2fe..4e3ddb37db4d 100644
--- a/pkgs/servers/matrix-conduit/default.nix
+++ b/pkgs/servers/matrix-conduit/default.nix
@@ -44,7 +44,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     sqlite
     rust-jemalloc-sys
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
@@ -55,7 +55,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   # tests failed on x86_64-darwin with SIGILL: illegal instruction
-  doCheck = !(stdenv.isx86_64 && stdenv.isDarwin);
+  doCheck = !(stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.isDarwin);
 
   passthru.tests = {
     inherit (nixosTests) matrix-conduit;
diff --git a/pkgs/servers/matrix-hebbot/default.nix b/pkgs/servers/matrix-hebbot/default.nix
index ca90304ed32f..a2f222e6d489 100644
--- a/pkgs/servers/matrix-hebbot/default.nix
+++ b/pkgs/servers/matrix-hebbot/default.nix
@@ -29,9 +29,9 @@ rustPlatform.buildRustPackage rec {
   };
 
   nativeBuildInputs = [ pkg-config cmake ] ++
-    lib.optionals stdenv.isDarwin [ autoconf automake ];
+    lib.optionals stdenv.hostPlatform.isDarwin [ autoconf automake ];
 
-  buildInputs = [ openssl ] ++ lib.optional stdenv.isDarwin Security;
+  buildInputs = [ openssl ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "Matrix bot which can generate \"This Week in X\" like blog posts ";
diff --git a/pkgs/servers/matrix-synapse/default.nix b/pkgs/servers/matrix-synapse/default.nix
index 1ce8a8a2f9dc..0e80af5a21ef 100644
--- a/pkgs/servers/matrix-synapse/default.nix
+++ b/pkgs/servers/matrix-synapse/default.nix
@@ -58,7 +58,7 @@ python3.pkgs.buildPythonApplication rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ];
 
@@ -140,7 +140,7 @@ python3.pkgs.buildPythonApplication rec {
   ])
   ++ lib.flatten (lib.attrValues passthru.optional-dependencies);
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/servers/matrix-synapse/plugins/mjolnir-antispam.nix b/pkgs/servers/matrix-synapse/plugins/mjolnir-antispam.nix
index e728e1cb013a..364abdb95196 100644
--- a/pkgs/servers/matrix-synapse/plugins/mjolnir-antispam.nix
+++ b/pkgs/servers/matrix-synapse/plugins/mjolnir-antispam.nix
@@ -28,6 +28,6 @@ buildPythonPackage rec {
     homepage = "https://github.com/matrix-org/mjolnir/blob/main/docs/synapse_module.md";
     license = licenses.asl20;
     maintainers = with maintainers; [ jojosch ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/servers/matrix-synapse/tools/rust-synapse-compress-state/default.nix b/pkgs/servers/matrix-synapse/tools/rust-synapse-compress-state/default.nix
index a66a1bdb89fe..de1cc21cf47d 100644
--- a/pkgs/servers/matrix-synapse/tools/rust-synapse-compress-state/default.nix
+++ b/pkgs/servers/matrix-synapse/tools/rust-synapse-compress-state/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [ openssl ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Tool to compress some state in a Synapse instance's database";
     homepage = "https://github.com/matrix-org/rust-synapse-compress-state";
     license = licenses.asl20;
diff --git a/pkgs/servers/memcached/default.nix b/pkgs/servers/memcached/default.nix
index ccc9fff51ace..71e77f4940ad 100644
--- a/pkgs/servers/memcached/default.nix
+++ b/pkgs/servers/memcached/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   hardeningEnable = [ "pie" ];
 
   env.NIX_CFLAGS_COMPILE = toString ([ "-Wno-error=deprecated-declarations" ]
-    ++ lib.optional stdenv.isDarwin "-Wno-error");
+    ++ lib.optional stdenv.hostPlatform.isDarwin "-Wno-error");
 
   meta = with lib; {
     description = "Distributed memory object caching system";
diff --git a/pkgs/servers/meteor/default.nix b/pkgs/servers/meteor/default.nix
index 2036d31e5b20..1454f4994c15 100644
--- a/pkgs/servers/meteor/default.nix
+++ b/pkgs/servers/meteor/default.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation {
     chmod +x $out/bin/meteor
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     # Patch Meteor to dynamically fixup shebangs and ELF metadata where
     # necessary.
     pushd $out
diff --git a/pkgs/servers/microbin/default.nix b/pkgs/servers/microbin/default.nix
index 55ebc572b686..62cb97ce1b2f 100644
--- a/pkgs/servers/microbin/default.nix
+++ b/pkgs/servers/microbin/default.nix
@@ -67,7 +67,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     oniguruma
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/servers/microserver/default.nix b/pkgs/servers/microserver/default.nix
index acc223627fce..810128a5d6ea 100644
--- a/pkgs/servers/microserver/default.nix
+++ b/pkgs/servers/microserver/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-JGsMtlWuww1rYE4w6i2VlyD6gGHqnLehLDZmW57R+Fo=";
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Security ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Security ]);
 
   meta = with lib; {
     homepage = "https://github.com/robertohuertasm/microserver";
diff --git a/pkgs/servers/misc/qremotecontrol-server/default.nix b/pkgs/servers/misc/qremotecontrol-server/default.nix
index 5fba2c0a382f..104a2b876c9b 100644
--- a/pkgs/servers/misc/qremotecontrol-server/default.nix
+++ b/pkgs/servers/misc/qremotecontrol-server/default.nix
@@ -56,6 +56,6 @@ stdenv.mkDerivation {
       powering on the computer via Wake On Lan is supported.
     '';
     # never built on aarch64-darwin, x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/servers/monitoring/bosun/default.nix b/pkgs/servers/monitoring/bosun/default.nix
index d001d245d4c0..3158f9b2424b 100644
--- a/pkgs/servers/monitoring/bosun/default.nix
+++ b/pkgs/servers/monitoring/bosun/default.nix
@@ -22,6 +22,6 @@ buildGoModule {
     license = licenses.mit;
     homepage = "https://bosun.org";
     maintainers = with maintainers; [ offline ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/servers/monitoring/grafana-agent/default.nix b/pkgs/servers/monitoring/grafana-agent/default.nix
index fd1307c10f61..c45ea47bac92 100644
--- a/pkgs/servers/monitoring/grafana-agent/default.nix
+++ b/pkgs/servers/monitoring/grafana-agent/default.nix
@@ -79,12 +79,12 @@ buildGoModule rec {
 
   # uses go-systemd, which uses libsystemd headers
   # https://github.com/coreos/go-systemd/issues/351
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isLinux [ "-I${lib.getDev systemd}/include" ]);
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isLinux [ "-I${lib.getDev systemd}/include" ]);
 
   # go-systemd uses libsystemd under the hood, which does dlopen(libsystemd) at
   # runtime.
   # Add to RUNPATH so it can be found.
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf \
       --set-rpath "${lib.makeLibraryPath [ (lib.getLib systemd) ]}:$(patchelf --print-rpath $out/bin/grafana-agent)" \
       $out/bin/grafana-agent
diff --git a/pkgs/servers/monitoring/grafana/default.nix b/pkgs/servers/monitoring/grafana/default.nix
index 4eca91169012..cb5f14fa28c4 100644
--- a/pkgs/servers/monitoring/grafana/default.nix
+++ b/pkgs/servers/monitoring/grafana/default.nix
@@ -22,7 +22,7 @@ buildGoModule rec {
   # borrowed from: https://github.com/NixOS/nixpkgs/blob/d70d9425f49f9aba3c49e2c389fe6d42bac8c5b0/pkgs/development/tools/analysis/snyk/default.nix#L20-L22
   env = {
     CYPRESS_INSTALL_BINARY = 0;
-  } // lib.optionalAttrs (stdenv.isDarwin && stdenv.isx86_64) {
+  } // lib.optionalAttrs (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) {
     # Fix error: no member named 'aligned_alloc' in the global namespace.
     # Occurs while building @esfx/equatable@npm:1.0.2 on x86_64-darwin
     NIX_CFLAGS_COMPILE = "-D_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION=1";
@@ -35,7 +35,7 @@ buildGoModule rec {
       yarn nodejs cacert
       jq moreutils python3
     # @esfx/equatable@npm:1.0.2 fails to build on darwin as it requires `xcbuild`
-    ] ++ lib.optionals stdenv.isDarwin [ xcbuild.xcbuild ];
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcbuild.xcbuild ];
     buildPhase = ''
       runHook preBuild
       export HOME="$(mktemp -d)"
@@ -65,7 +65,7 @@ buildGoModule rec {
   proxyVendor = true;
 
   nativeBuildInputs = [ wire yarn jq moreutils removeReferencesTo python3 faketty ]
-    ++ lib.optionals stdenv.isDarwin [ xcbuild.xcbuild ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ xcbuild.xcbuild ];
 
   postConfigure = ''
     # Generate DI code that's required to compile the package.
diff --git a/pkgs/servers/monitoring/kapacitor/default.nix b/pkgs/servers/monitoring/kapacitor/default.nix
index 20525bfbf965..76048222edb7 100644
--- a/pkgs/servers/monitoring/kapacitor/default.nix
+++ b/pkgs/servers/monitoring/kapacitor/default.nix
@@ -42,7 +42,7 @@ let
     sourceRoot = "${src.name}/libflux";
     cargoHash = "sha256-oAMoGGdR0QEjSzZ0/J5J9s/ekSlryCcRBSo5N2r70Ko=";
     nativeBuildInputs = [ rustPlatform.bindgenHook ];
-    buildInputs = lib.optional stdenv.isDarwin libiconv;
+    buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
     pkgcfg = ''
       Name: flux
       Version: ${libflux_version}
@@ -56,7 +56,7 @@ let
       cp -r $NIX_BUILD_TOP/source/libflux/include/influxdata $out/include
       substitute $pkgcfgPath $out/pkgconfig/flux.pc \
         --replace /out $out
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       install_name_tool -id $out/lib/libflux.dylib $out/lib/libflux.dylib
     '';
   };
diff --git a/pkgs/servers/monitoring/lcdproc/default.nix b/pkgs/servers/monitoring/lcdproc/default.nix
index d70ba0ea1991..7570428d7f3e 100644
--- a/pkgs/servers/monitoring/lcdproc/default.nix
+++ b/pkgs/servers/monitoring/lcdproc/default.nix
@@ -75,6 +75,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ peterhoeg ];
     platforms = platforms.unix;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/servers/monitoring/loki/default.nix b/pkgs/servers/monitoring/loki/default.nix
index aa70eda0de81..987ec3f5419b 100644
--- a/pkgs/servers/monitoring/loki/default.nix
+++ b/pkgs/servers/monitoring/loki/default.nix
@@ -34,9 +34,9 @@ buildGoModule rec {
   tags = ["promtail_journal_enabled"];
 
   nativeBuildInputs = [ makeWrapper ];
-  buildInputs = lib.optionals stdenv.isLinux [ systemd.dev ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ systemd.dev ];
 
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/promtail \
       --prefix LD_LIBRARY_PATH : "${lib.getLib systemd}/lib"
   '';
diff --git a/pkgs/servers/monitoring/mackerel-agent/default.nix b/pkgs/servers/monitoring/mackerel-agent/default.nix
index 9507b5d1dcf4..69538107ad4f 100644
--- a/pkgs/servers/monitoring/mackerel-agent/default.nix
+++ b/pkgs/servers/monitoring/mackerel-agent/default.nix
@@ -12,8 +12,8 @@ buildGoModule rec {
   };
 
   nativeBuildInputs = [ makeWrapper ];
-  nativeCheckInputs = lib.optionals (!stdenv.isDarwin) [ nettools ];
-  buildInputs = lib.optionals (!stdenv.isDarwin) [ iproute2 ];
+  nativeCheckInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ nettools ];
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ iproute2 ];
 
   vendorHash = "sha256-JIqQXS2iw3opeotpfqC16w7hdu+7XjxhIyVj2M+98ec=";
 
diff --git a/pkgs/servers/monitoring/mtail/default.nix b/pkgs/servers/monitoring/mtail/default.nix
index e64ac1375414..4c05a7513eca 100644
--- a/pkgs/servers/monitoring/mtail/default.nix
+++ b/pkgs/servers/monitoring/mtail/default.nix
@@ -24,7 +24,7 @@ buildGoModule rec {
   ];
 
   # fails on darwin with: write unixgram -> <tmpdir>/rsyncd.log: write: message too long
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Tool for extracting metrics from application logs";
diff --git a/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix b/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix
index f0bcd2bde80a..e6e4f6f3559b 100644
--- a/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix
+++ b/pkgs/servers/monitoring/nagios/plugins/check_ssl_cert.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
 
   postInstall = ''
     wrapProgram $out/bin/check_ssl_cert \
-      --prefix PATH : "${lib.makeBinPath ([ openssl file which curl bc coreutils bind nmap netcat-gnu python3 ] ++ lib.optional stdenv.isLinux iproute2) }"
+      --prefix PATH : "${lib.makeBinPath ([ openssl file which curl bc coreutils bind nmap netcat-gnu python3 ] ++ lib.optional stdenv.hostPlatform.isLinux iproute2) }"
   '';
 
   meta = with lib; {
diff --git a/pkgs/servers/monitoring/net-snmp/default.nix b/pkgs/servers/monitoring/net-snmp/default.nix
index b7db5e56fd77..5aa0e8697c58 100644
--- a/pkgs/servers/monitoring/net-snmp/default.nix
+++ b/pkgs/servers/monitoring/net-snmp/default.nix
@@ -45,7 +45,7 @@ in stdenv.mkDerivation rec {
       "--with-openssl=${openssl.dev}"
       "--disable-embedded-perl"
       "--without-perl-modules"
-    ] ++ lib.optional stdenv.isLinux "--with-mnttab=/proc/mounts";
+    ] ++ lib.optional stdenv.hostPlatform.isLinux "--with-mnttab=/proc/mounts";
 
   postPatch = ''
     substituteInPlace testing/fulltests/support/simple_TESTCONF.sh --replace "/bin/netstat" "${nettools}/bin/netstat"
@@ -61,7 +61,7 @@ in stdenv.mkDerivation rec {
   nativeBuildInputs = [ nettools file autoreconfHook ];
   buildInputs = [ openssl ]
     ++ lib.optional withPerlTools perlWithPkgs
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.ApplicationServices
       darwin.apple_sdk.frameworks.CoreServices
       darwin.apple_sdk.frameworks.IOKit
diff --git a/pkgs/servers/monitoring/openobserve/default.nix b/pkgs/servers/monitoring/openobserve/default.nix
index 5ff8616225c6..0948f72fcb09 100644
--- a/pkgs/servers/monitoring/openobserve/default.nix
+++ b/pkgs/servers/monitoring/openobserve/default.nix
@@ -82,7 +82,7 @@ rustPlatform.buildRustPackage {
     xz
     zlib
     zstd
-  ] ++ lib.optionals stdenv.isDarwin (with apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with apple_sdk.frameworks; [
     CoreFoundation
     CoreServices
     IOKit
diff --git a/pkgs/servers/monitoring/prometheus/default.nix b/pkgs/servers/monitoring/prometheus/default.nix
index 5e33eefa9544..6d3e32640fe1 100644
--- a/pkgs/servers/monitoring/prometheus/default.nix
+++ b/pkgs/servers/monitoring/prometheus/default.nix
@@ -121,7 +121,7 @@ buildGoModule rec {
 
   # https://hydra.nixos.org/build/130673870/nixlog/1
   # Test mock data uses 64 bit data without an explicit (u)int64
-  doCheck = !(stdenv.isDarwin || stdenv.hostPlatform.parsed.cpu.bits < 64);
+  doCheck = !(stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.parsed.cpu.bits < 64);
 
   passthru.tests = { inherit (nixosTests) prometheus; };
 
diff --git a/pkgs/servers/monitoring/prometheus/exportarr/default.nix b/pkgs/servers/monitoring/prometheus/exportarr/default.nix
index caef8c57605d..d23cc62c80ff 100644
--- a/pkgs/servers/monitoring/prometheus/exportarr/default.nix
+++ b/pkgs/servers/monitoring/prometheus/exportarr/default.nix
@@ -23,7 +23,7 @@ buildGoModule rec {
 
   ldflags = [ "-s" "-w" ];
 
-  tags = lib.optionals stdenv.isLinux [ "netgo" ];
+  tags = lib.optionals stdenv.hostPlatform.isLinux [ "netgo" ];
 
   preCheck = ''
     # Run all tests.
diff --git a/pkgs/servers/monitoring/prometheus/wireguard-exporter.nix b/pkgs/servers/monitoring/prometheus/wireguard-exporter.nix
index 50fe085d4a0d..51a13f1efcd0 100644
--- a/pkgs/servers/monitoring/prometheus/wireguard-exporter.nix
+++ b/pkgs/servers/monitoring/prometheus/wireguard-exporter.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
     rm .cargo/config.toml
   '';
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security ];
 
   passthru.tests = { inherit (nixosTests.prometheus-exporters) wireguard; };
 
diff --git a/pkgs/servers/monitoring/uptime-kuma/default.nix b/pkgs/servers/monitoring/uptime-kuma/default.nix
index f787588aa90e..e53e641e5d88 100644
--- a/pkgs/servers/monitoring/uptime-kuma/default.nix
+++ b/pkgs/servers/monitoring/uptime-kuma/default.nix
@@ -46,6 +46,6 @@ buildNpmPackage rec {
     license = licenses.mit;
     maintainers = with maintainers; [ julienmalka ];
     # FileNotFoundError: [Errno 2] No such file or directory: 'xcrun'
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/servers/mpd/default.nix b/pkgs/servers/mpd/default.nix
index 57178da7297f..ee70b1b1e0c4 100644
--- a/pkgs/servers/mpd/default.nix
+++ b/pkgs/servers/mpd/default.nix
@@ -97,8 +97,8 @@ let
       # Disable platform specific features if needed
       # using libmad to decode mp3 files on darwin is causing a segfault -- there
       # is probably a solution, but I'm disabling it for now
-      platformMask = lib.optionals stdenv.isDarwin [ "mad" "pulse" "jack" "smbclient" ]
-                  ++ lib.optionals (!stdenv.isLinux) [ "alsa" "pipewire" "io_uring" "systemd" "syslog" ];
+      platformMask = lib.optionals stdenv.hostPlatform.isDarwin [ "mad" "pulse" "jack" "smbclient" ]
+                  ++ lib.optionals (!stdenv.hostPlatform.isLinux) [ "alsa" "pipewire" "io_uring" "systemd" "syslog" ];
 
       knownFeatures = builtins.attrNames featureDependencies ++ builtins.attrNames nativeFeatureDependencies;
       platformFeatures = lib.subtractLists platformMask knownFeatures;
@@ -137,7 +137,7 @@ let
         gtest
       ]
         ++ concatAttrVals features_ featureDependencies
-        ++ lib.optionals stdenv.isDarwin [ AudioToolbox AudioUnit ];
+        ++ lib.optionals stdenv.hostPlatform.isDarwin [ AudioToolbox AudioUnit ];
 
       nativeBuildInputs = [
         meson
@@ -148,7 +148,7 @@ let
 
       depsBuildBuild = [ buildPackages.stdenv.cc ];
 
-      postPatch = lib.optionalString (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "12.0") ''
+      postPatch = lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "12.0") ''
         substituteInPlace src/output/plugins/OSXOutputPlugin.cxx \
           --replace kAudioObjectPropertyElement{Main,Master} \
           --replace kAudioHardwareServiceDeviceProperty_Virtual{Main,Master}Volume
@@ -166,7 +166,7 @@ let
       outputs = [ "out" "doc" ]
         ++ lib.optional (builtins.elem "documentation" features_) "man";
 
-      CXXFLAGS = lib.optionals stdenv.isDarwin [
+      CXXFLAGS = lib.optionals stdenv.hostPlatform.isDarwin [
         "-D__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES=0"
       ];
 
@@ -210,9 +210,9 @@ in
     "libmpdclient" "id3tag" "expat" "pcre"
     "yajl" "sqlite"
     "soundcloud" "qobuz"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "alsa" "systemd" "syslog" "io_uring"
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     "mad" "jack"
   ]; };
   mpdWithFeatures = run;
diff --git a/pkgs/servers/mqtt/mosquitto/default.nix b/pkgs/servers/mqtt/mosquitto/default.nix
index 7f32957fdbf4..3c3a6199f7b5 100644
--- a/pkgs/servers/mqtt/mosquitto/default.nix
+++ b/pkgs/servers/mqtt/mosquitto/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-Vs0blV2IhnlEAm0WtOartz+0vLesJfp78FNJCivRxHk=";
   };
 
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     (fetchpatch {
       name = "revert-cmake-shared-to-module.patch"; # See https://github.com/eclipse/mosquitto/issues/2277
       url = "https://github.com/eclipse/mosquitto/commit/e21eaeca37196439b3e89bb8fd2eb1903ef94845.patch";
diff --git a/pkgs/servers/mx-puppet-discord/default.nix b/pkgs/servers/mx-puppet-discord/default.nix
index 27fde8301a22..254434a8ba3d 100644
--- a/pkgs/servers/mx-puppet-discord/default.nix
+++ b/pkgs/servers/mx-puppet-discord/default.nix
@@ -47,7 +47,7 @@ in myNodePackages.package.override {
     maintainers = with maintainers; [ expipiplus1 ];
     platforms = platforms.unix;
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
     mainProgram = "mx-puppet-discord";
   };
 }
diff --git a/pkgs/servers/mx-puppet-discord/node-composition.nix b/pkgs/servers/mx-puppet-discord/node-composition.nix
index c5d958bef2c4..f47a724999ed 100644
--- a/pkgs/servers/mx-puppet-discord/node-composition.nix
+++ b/pkgs/servers/mx-puppet-discord/node-composition.nix
@@ -8,7 +8,7 @@ let
   nodeEnv = import ../../development/node-packages/node-env.nix {
     inherit (pkgs) stdenv lib python2 runCommand writeTextFile writeShellScript;
     inherit pkgs nodejs;
-    libtool = if pkgs.stdenv.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
+    libtool = if pkgs.stdenv.hostPlatform.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
   };
 in
 import ./node-packages.nix {
diff --git a/pkgs/servers/networking/rustus/default.nix b/pkgs/servers/networking/rustus/default.nix
index 77bf8ce7d776..3819a23781ef 100644
--- a/pkgs/servers/networking/rustus/default.nix
+++ b/pkgs/servers/networking/rustus/default.nix
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/servers/nosql/eventstore/default.nix b/pkgs/servers/nosql/eventstore/default.nix
index d068f28ccf21..9269993a845e 100644
--- a/pkgs/servers/nosql/eventstore/default.nix
+++ b/pkgs/servers/nosql/eventstore/default.nix
@@ -37,7 +37,7 @@ buildDotnetModule rec {
   executables = [ mainProgram ];
 
   # This test has a problem running on macOS
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     "EventStore.Projections.Core.Tests.Services.grpc_service.ServerFeaturesTests<LogFormat+V2,String>.should_receive_expected_endpoints"
     "EventStore.Projections.Core.Tests.Services.grpc_service.ServerFeaturesTests<LogFormat+V3,UInt32>.should_receive_expected_endpoints"
   ];
diff --git a/pkgs/servers/nosql/influxdb/default.nix b/pkgs/servers/nosql/influxdb/default.nix
index 739fab6f8119..384958624611 100644
--- a/pkgs/servers/nosql/influxdb/default.nix
+++ b/pkgs/servers/nosql/influxdb/default.nix
@@ -28,7 +28,7 @@ let
     sourceRoot = "${src.name}/libflux";
     cargoHash = "sha256-O+t4f4P5291BuyARH6Xf3LejMFEQEBv+qKtyjHRhclA=";
     nativeBuildInputs = [ rustPlatform.bindgenHook ];
-    buildInputs = lib.optional stdenv.isDarwin libiconv;
+    buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
     pkgcfg = ''
       Name: flux
       Version: ${libflux_version}
@@ -42,7 +42,7 @@ let
       cp -r $NIX_BUILD_TOP/source/libflux/include/influxdata $out/include
       substitute $pkgcfgPath $out/pkgconfig/flux.pc \
         --replace /out $out
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       install_name_tool -id $out/lib/libflux.dylib $out/lib/libflux.dylib
     '';
   };
diff --git a/pkgs/servers/nosql/influxdb2/default.nix b/pkgs/servers/nosql/influxdb2/default.nix
index 81333a9f1ec3..99ae9bc38c2b 100644
--- a/pkgs/servers/nosql/influxdb2/default.nix
+++ b/pkgs/servers/nosql/influxdb2/default.nix
@@ -53,7 +53,7 @@ let
     sourceRoot = "${src.name}/libflux";
     cargoHash = "sha256-O+t4f4P5291BuyARH6Xf3LejMFEQEBv+qKtyjHRhclA=";
     nativeBuildInputs = [ rustPlatform.bindgenHook ];
-    buildInputs = lib.optional stdenv.isDarwin libiconv;
+    buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
     pkgcfg = ''
       Name: flux
       Version: ${libflux_version}
@@ -67,7 +67,7 @@ let
       cp -r $NIX_BUILD_TOP/source/libflux/include/influxdata $out/include
       substitute $pkgcfgPath $out/pkgconfig/flux.pc \
         --replace /out $out
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       install_name_tool -id $out/lib/libflux.dylib $out/lib/libflux.dylib
     '';
   };
diff --git a/pkgs/servers/nosql/mongodb/5.0.nix b/pkgs/servers/nosql/mongodb/5.0.nix
index f69ad97f8ac6..84c0991515b0 100644
--- a/pkgs/servers/nosql/mongodb/5.0.nix
+++ b/pkgs/servers/nosql/mongodb/5.0.nix
@@ -8,13 +8,13 @@ let
   buildMongoDB = callPackage ./mongodb.nix {
     inherit sasl boost Security CoreFoundation cctools;
   };
-  variants = if stdenv.isLinux then
+  variants = if stdenv.hostPlatform.isLinux then
     {
       version = "5.0.29";
       sha256 = "sha256-27+SXo0fjFwJFFm/NhpDhq95dMwiN8RCJO7j5ic49Ls=";
       patches = [ ./fix-build-with-boost-1.79-5_0-linux.patch ];
     }
-  else lib.optionalAttrs stdenv.isDarwin
+  else lib.optionalAttrs stdenv.hostPlatform.isDarwin
     {
       version = "5.0.3"; # at least darwin has to stay on 5.0.3 until the SDK used by nixpkgs is bumped to 10.13
       sha256 = "1p9pq0dfd6lynvnz5p1c8dqp4filzrz86j840xwxwx82dm1zl6p0";
diff --git a/pkgs/servers/nosql/mongodb/mongodb.nix b/pkgs/servers/nosql/mongodb/mongodb.nix
index 9c26f5fa701d..f90695934121 100644
--- a/pkgs/servers/nosql/mongodb/mongodb.nix
+++ b/pkgs/servers/nosql/mongodb/mongodb.nix
@@ -56,7 +56,7 @@ let
     #"stemmer"  -- not nice to package yet (no versioning, no makefile, no shared libs).
     #"valgrind" -- mongodb only requires valgrind.h, which is vendored in the source.
     #"wiredtiger"
-  ] ++ lib.optionals stdenv.isLinux [ "tcmalloc" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ "tcmalloc" ];
   inherit (lib) systems subtractLists;
 
 in stdenv.mkDerivation rec {
@@ -73,7 +73,7 @@ in stdenv.mkDerivation rec {
   nativeBuildInputs = [
     scons
     python
-  ] ++ lib.optional stdenv.isLinux net-snmp;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux net-snmp;
 
   buildInputs = [
     boost
@@ -87,8 +87,8 @@ in stdenv.mkDerivation rec {
     sasl
     snappy
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [ Security CoreFoundation cctools ]
-  ++ lib.optional stdenv.isLinux net-snmp
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security CoreFoundation cctools ]
+  ++ lib.optional stdenv.hostPlatform.isLinux net-snmp
   ++ [ xz ];
 
   # MongoDB keeps track of its build parameters, which tricks nix into
@@ -107,9 +107,9 @@ in stdenv.mkDerivation rec {
     #include <string>'
     substituteInPlace src/mongo/db/exec/plan_stats.h --replace '#include <string>' '#include <optional>
     #include <string>'
-  '' + lib.optionalString (stdenv.isDarwin && lib.versionOlder version "6.0") ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionOlder version "6.0") ''
     substituteInPlace src/third_party/mozjs-${mozjsVersion}/extract/js/src/jsmath.cpp --replace '${mozjsReplace}' 0
-  '' + lib.optionalString stdenv.isi686 ''
+  '' + lib.optionalString stdenv.hostPlatform.isi686 ''
 
     # don't fail by default on i686
     substituteInPlace src/mongo/db/storage/storage_options.h \
@@ -142,9 +142,9 @@ in stdenv.mkDerivation rec {
   preBuild = ''
     sconsFlags+=" CC=$CC"
     sconsFlags+=" CXX=$CXX"
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     sconsFlags+=" AR=$AR"
-  '' + lib.optionalString stdenv.isAarch64 ''
+  '' + lib.optionalString stdenv.hostPlatform.isAarch64 ''
     sconsFlags+=" CCFLAGS='-march=armv8-a+crc'"
   '';
 
diff --git a/pkgs/servers/nosql/redis/default.nix b/pkgs/servers/nosql/redis/default.nix
index d15b05699d63..42bafb37c819 100644
--- a/pkgs/servers/nosql/redis/default.nix
+++ b/pkgs/servers/nosql/redis/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optional withSystemd systemd
     ++ lib.optionals tlsSupport [ openssl ];
 
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/Makefile --replace "-flto" ""
   '';
 
@@ -53,12 +53,12 @@ stdenv.mkDerivation (finalAttrs: {
 
   enableParallelBuilding = true;
 
-  hardeningEnable = lib.optionals (!stdenv.isDarwin) [ "pie" ];
+  hardeningEnable = lib.optionals (!stdenv.hostPlatform.isDarwin) [ "pie" ];
 
   env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.cc.isClang [ "-std=c11" ]);
 
   # darwin currently lacks a pure `pgrep` which is extensively used here
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   nativeCheckInputs = [ which tcl ps ] ++ lib.optionals stdenv.hostPlatform.isStatic [ getconf ];
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/servers/nosql/rethinkdb/default.nix b/pkgs/servers/nosql/rethinkdb/default.nix
index 2ba228dd699b..03aed49f564b 100644
--- a/pkgs/servers/nosql/rethinkdb/default.nix
+++ b/pkgs/servers/nosql/rethinkdb/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     patchShebangs .
   '';
 
-  configureFlags = lib.optionals (!stdenv.isDarwin) [
+  configureFlags = lib.optionals (!stdenv.hostPlatform.isDarwin) [
     "--with-jemalloc"
     "--lib-path=${jemalloc}/lib"
   ];
@@ -31,8 +31,8 @@ stdenv.mkDerivation rec {
   makeFlags = [ "rethinkdb" ];
 
   buildInputs = [ protobuf boost zlib curl openssl icu ]
-    ++ lib.optional (!stdenv.isDarwin) jemalloc
-    ++ lib.optional stdenv.isDarwin libtool;
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) jemalloc
+    ++ lib.optional stdenv.hostPlatform.isDarwin libtool;
 
   nativeBuildInputs = [ which m4 python3Packages.python makeWrapper ];
 
diff --git a/pkgs/servers/nostr-rs-relay/default.nix b/pkgs/servers/nostr-rs-relay/default.nix
index db7dd125567c..c63f4d2a057f 100644
--- a/pkgs/servers/nostr-rs-relay/default.nix
+++ b/pkgs/servers/nostr-rs-relay/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-+agmlg6tAnEJ5o586fUY7V4fdNScDPKCbaZqt7R3gqg=";
 
   buildInputs = [ openssl.dev ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/servers/ombi/default.nix b/pkgs/servers/ombi/default.nix
index 6e6ece8ea7cb..a9fb9aa33586 100644
--- a/pkgs/servers/ombi/default.nix
+++ b/pkgs/servers/ombi/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchurl, makeWrapper, autoPatchelfHook, fixDarwinDylibNames, zlib, krb5, openssl, icu, nixosTests }:
 
 let
-  os = if stdenv.isDarwin then "osx" else "linux";
+  os = if stdenv.hostPlatform.isDarwin then "osx" else "linux";
   arch = {
     x86_64-linux = "x64";
     aarch64-linux = "arm64";
diff --git a/pkgs/servers/openvscode-server/default.nix b/pkgs/servers/openvscode-server/default.nix
index bc1e7a3f5e18..f21693591672 100644
--- a/pkgs/servers/openvscode-server/default.nix
+++ b/pkgs/servers/openvscode-server/default.nix
@@ -103,9 +103,9 @@ stdenv.mkDerivation (finalAttrs: {
     moreutils
   ];
 
-  buildInputs = lib.optionals (!stdenv.isDarwin) [ libsecret ]
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ libsecret ]
     ++ (with xorg; [ libX11 libxkbfile libkrb5 ])
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Cocoa
     Security
@@ -181,7 +181,7 @@ stdenv.mkDerivation (finalAttrs: {
     find -path "*@vscode/ripgrep" -type d \
       -execdir mkdir -p {}/bin \; \
       -execdir ln -s ${ripgrep}/bin/rg {}/bin/rg \;
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # use prebuilt binary for @parcel/watcher, which requires macOS SDK 10.13+
     # (see issue #101229)
     pushd ./remote/node_modules/@parcel/watcher
diff --git a/pkgs/servers/osmocom/osmo-bsc/default.nix b/pkgs/servers/osmocom/osmo-bsc/default.nix
index 647a54bf5328..ced3be6b350f 100644
--- a/pkgs/servers/osmocom/osmo-bsc/default.nix
+++ b/pkgs/servers/osmocom/osmo-bsc/default.nix
@@ -11,7 +11,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/servers/osmocom/osmo-ggsn/default.nix b/pkgs/servers/osmocom/osmo-ggsn/default.nix
index 87c1ee1d9573..f2c77d33ddb1 100644
--- a/pkgs/servers/osmocom/osmo-ggsn/default.nix
+++ b/pkgs/servers/osmocom/osmo-ggsn/default.nix
@@ -7,7 +7,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/servers/osmocom/osmo-hlr/default.nix b/pkgs/servers/osmocom/osmo-hlr/default.nix
index ec8d4622a848..a287619155ed 100644
--- a/pkgs/servers/osmocom/osmo-hlr/default.nix
+++ b/pkgs/servers/osmocom/osmo-hlr/default.nix
@@ -9,7 +9,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/servers/osmocom/osmo-hnbgw/default.nix b/pkgs/servers/osmocom/osmo-hnbgw/default.nix
index fc3798fde18d..e074e0100d28 100644
--- a/pkgs/servers/osmocom/osmo-hnbgw/default.nix
+++ b/pkgs/servers/osmocom/osmo-hnbgw/default.nix
@@ -13,7 +13,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/servers/osmocom/osmo-hnodeb/default.nix b/pkgs/servers/osmocom/osmo-hnodeb/default.nix
index 9455b14aad2a..27cf6c04f41a 100644
--- a/pkgs/servers/osmocom/osmo-hnodeb/default.nix
+++ b/pkgs/servers/osmocom/osmo-hnodeb/default.nix
@@ -13,7 +13,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/servers/osmocom/osmo-iuh/default.nix b/pkgs/servers/osmocom/osmo-iuh/default.nix
index 98629719ee8d..55add5a09b73 100644
--- a/pkgs/servers/osmocom/osmo-iuh/default.nix
+++ b/pkgs/servers/osmocom/osmo-iuh/default.nix
@@ -12,7 +12,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/servers/osmocom/osmo-mgw/default.nix b/pkgs/servers/osmocom/osmo-mgw/default.nix
index 23959b3be9ec..08774c723651 100644
--- a/pkgs/servers/osmocom/osmo-mgw/default.nix
+++ b/pkgs/servers/osmocom/osmo-mgw/default.nix
@@ -9,7 +9,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/servers/osmocom/osmo-msc/default.nix b/pkgs/servers/osmocom/osmo-msc/default.nix
index 679c88e5cff9..352489af8b68 100644
--- a/pkgs/servers/osmocom/osmo-msc/default.nix
+++ b/pkgs/servers/osmocom/osmo-msc/default.nix
@@ -14,7 +14,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/servers/osmocom/osmo-pcu/default.nix b/pkgs/servers/osmocom/osmo-pcu/default.nix
index 74f56957059b..a8b2000ec852 100644
--- a/pkgs/servers/osmocom/osmo-pcu/default.nix
+++ b/pkgs/servers/osmocom/osmo-pcu/default.nix
@@ -8,7 +8,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/servers/osmocom/osmo-sgsn/default.nix b/pkgs/servers/osmocom/osmo-sgsn/default.nix
index d9ca0d72084c..a182986ee27c 100644
--- a/pkgs/servers/osmocom/osmo-sgsn/default.nix
+++ b/pkgs/servers/osmocom/osmo-sgsn/default.nix
@@ -12,7 +12,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/servers/osmocom/osmo-sip-connector/default.nix b/pkgs/servers/osmocom/osmo-sip-connector/default.nix
index c10361f119b3..b1f810d0f5f7 100644
--- a/pkgs/servers/osmocom/osmo-sip-connector/default.nix
+++ b/pkgs/servers/osmocom/osmo-sip-connector/default.nix
@@ -9,7 +9,7 @@
 }:
 
 let
-  inherit (stdenv) isLinux;
+  inherit (stdenv.hostPlatform) isLinux;
 in
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/servers/oxigraph/default.nix b/pkgs/servers/oxigraph/default.nix
index 868ec8f8bd39..091b2037d235 100644
--- a/pkgs/servers/oxigraph/default.nix
+++ b/pkgs/servers/oxigraph/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [
     rustPlatform.bindgenHook
   ];
-  buildInputs = lib.optionals stdenv.isDarwin [ IOKit Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ IOKit Security ];
 
   cargoBuildFlags = [ "--package" "oxigraph_server" ];
 
diff --git a/pkgs/servers/pim6sd/default.nix b/pkgs/servers/pim6sd/default.nix
index e1bc6ce48ff4..81b60d46e28b 100644
--- a/pkgs/servers/pim6sd/default.nix
+++ b/pkgs/servers/pim6sd/default.nix
@@ -19,6 +19,6 @@ stdenv.mkDerivation rec {
     license = licenses.bsd3;
     maintainers = with maintainers; [ hexa ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/pim6sd.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/pim6sd.x86_64-darwin
   };
 }
diff --git a/pkgs/servers/piping-server-rust/default.nix b/pkgs/servers/piping-server-rust/default.nix
index f3cc1c5543c4..0e081884e4cf 100644
--- a/pkgs/servers/piping-server-rust/default.nix
+++ b/pkgs/servers/piping-server-rust/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-YSiClSnjgqFqT2IGJoatcy7j3NUKcff826AvJ/+RNNU=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices Security ];
 
   meta = with lib; {
     description = "Infinitely transfer between every device over pure HTTP with pipes or browsers";
diff --git a/pkgs/servers/polaris/default.nix b/pkgs/servers/polaris/default.nix
index b19eb1c47e7d..002a04f4f62e 100644
--- a/pkgs/servers/polaris/default.nix
+++ b/pkgs/servers/polaris/default.nix
@@ -41,7 +41,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-PnNLSL6YIpM6b3+oCh2eNRNPpCKyvnWEW7uNaYTKzAU=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.Security
   ];
 
diff --git a/pkgs/servers/prowlarr/default.nix b/pkgs/servers/prowlarr/default.nix
index 6421688976c2..5e24932517da 100644
--- a/pkgs/servers/prowlarr/default.nix
+++ b/pkgs/servers/prowlarr/default.nix
@@ -6,9 +6,9 @@ let
   unsupported = throw "Unsupported system ${stdenv.hostPlatform.system} for ${pname}";
 
   os =
-    if stdenv.isDarwin then
+    if stdenv.hostPlatform.isDarwin then
       "osx"
-    else if stdenv.isLinux then
+    else if stdenv.hostPlatform.isLinux then
       "linux"
     else
       unsupported;
diff --git a/pkgs/servers/ps3netsrv/default.nix b/pkgs/servers/ps3netsrv/default.nix
index 30ca1318b9cf..4d9e221a30b9 100644
--- a/pkgs/servers/ps3netsrv/default.nix
+++ b/pkgs/servers/ps3netsrv/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     mbedtls
   ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Doff64_t=off_t";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Doff64_t=off_t";
 
   postInstall = ''
     install -Dm644 ../LICENSE.TXT $out/usr/share/licenses/${pname}/LICENSE.TXT
diff --git a/pkgs/servers/pulseaudio/default.nix b/pkgs/servers/pulseaudio/default.nix
index 0186de73fddf..44f89234ec6d 100644
--- a/pkgs/servers/pulseaudio/default.nix
+++ b/pkgs/servers/pulseaudio/default.nix
@@ -21,15 +21,15 @@
 
 , airtunesSupport ? false
 
-, bluetoothSupport ? stdenv.isLinux
+, bluetoothSupport ? stdenv.hostPlatform.isLinux
 , advancedBluetoothCodecs ? false
 
 , remoteControlSupport ? false
 
 , zeroconfSupport ? false
 
-, alsaSupport ? stdenv.isLinux
-, udevSupport ? stdenv.isLinux
+, alsaSupport ? stdenv.hostPlatform.isLinux
+, udevSupport ? stdenv.hostPlatform.isLinux
 
 , # Whether to build only the library.
   libOnly ? false
@@ -68,23 +68,23 @@ stdenv.mkDerivation rec {
   outputs = [ "out" "dev" ];
 
   nativeBuildInputs = [ pkg-config meson ninja makeWrapper perlPackages.perl perlPackages.XMLParser m4 ]
-    ++ lib.optionals stdenv.isLinux [ glib ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ glib ]
     # gstreamer plugin discovery requires wrapping
     ++ lib.optional (bluetoothSupport && advancedBluetoothCodecs) wrapGAppsHook3;
 
   propagatedBuildInputs =
-    lib.optionals stdenv.isLinux [ libcap ];
+    lib.optionals stdenv.hostPlatform.isLinux [ libcap ];
 
   buildInputs =
     [ libtool libsndfile soxr speexdsp fftwFloat check ]
-    ++ lib.optionals stdenv.isLinux [ glib dbus ]
-    ++ lib.optionals stdenv.isDarwin [ AudioUnit Cocoa CoreServices CoreAudio libintl ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ glib dbus ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AudioUnit Cocoa CoreServices CoreAudio libintl ]
     ++ lib.optionals (!libOnly) (
       [ libasyncns webrtc-audio-processing_1 ]
       ++ lib.optional jackaudioSupport libjack2
       ++ lib.optionals x11Support [ xorg.libICE xorg.libSM xorg.libX11 xorg.libXi xorg.libXtst ]
       ++ lib.optional useSystemd systemd
-      ++ lib.optionals stdenv.isLinux [ alsa-lib udev ]
+      ++ lib.optionals stdenv.hostPlatform.isLinux [ alsa-lib udev ]
       ++ lib.optional airtunesSupport openssl
       ++ lib.optionals bluetoothSupport [ bluez5 sbc ]
       # aptX and LDAC codecs are in gst-plugins-bad so far, rtpldacpay is in -good
@@ -104,7 +104,7 @@ stdenv.mkDerivation rec {
     (lib.mesonBool "doxygen" false)
     (lib.mesonEnable "elogind" false)
     # gsettings does not support cross-compilation
-    (lib.mesonEnable "gsettings" (stdenv.isLinux && (stdenv.buildPlatform == stdenv.hostPlatform)))
+    (lib.mesonEnable "gsettings" (stdenv.hostPlatform.isLinux && (stdenv.buildPlatform == stdenv.hostPlatform)))
     (lib.mesonEnable "gstreamer" false)
     (lib.mesonEnable "gtk" false)
     (lib.mesonEnable "jack" (jackaudioSupport && !libOnly))
@@ -128,10 +128,10 @@ stdenv.mkDerivation rec {
     # renaming the unwrapped binaries (see below)
     "--bindir=${placeholder "out"}/.bin-unwrapped"
   ]
-  ++ lib.optionals (stdenv.isLinux && useSystemd) [
+  ++ lib.optionals (stdenv.hostPlatform.isLinux && useSystemd) [
     (lib.mesonOption "systemduserunitdir" "${placeholder "out"}/lib/systemd/user")
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     (lib.mesonEnable "consolekit" false)
     (lib.mesonEnable "dbus" false)
     (lib.mesonEnable "glib" false)
@@ -139,7 +139,7 @@ stdenv.mkDerivation rec {
   ];
 
   # tests fail on Darwin because of timeouts
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   preCheck = ''
     export HOME=$(mktemp -d)
   '';
@@ -156,13 +156,13 @@ stdenv.mkDerivation rec {
     cp config.h $dev/include/pulse
   '';
 
-  preFixup = lib.optionalString (stdenv.isLinux  && (stdenv.hostPlatform == stdenv.buildPlatform)) ''
+  preFixup = lib.optionalString (stdenv.hostPlatform.isLinux  && (stdenv.hostPlatform == stdenv.buildPlatform)) ''
     wrapProgram $out/libexec/pulse/gsettings-helper \
      --prefix XDG_DATA_DIRS : "$out/share/gsettings-schemas/${pname}-${version}" \
      --prefix GIO_EXTRA_MODULES : "${lib.getLib dconf}/lib/gio/modules"
   ''
   # add .so symlinks for modules to be found under macOS
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     for file in $out/lib/pulseaudio/modules/*.dylib; do
       ln -s "''$file" "''${file%.dylib}.so"
       ln -s "''$file" "$out/lib/pulseaudio/''$(basename ''$file .dylib).so"
diff --git a/pkgs/servers/radarr/default.nix b/pkgs/servers/radarr/default.nix
index 896e8b3d1f1a..d0ef6198f41a 100644
--- a/pkgs/servers/radarr/default.nix
+++ b/pkgs/servers/radarr/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchurl, mono, libmediainfo, sqlite, curl, makeWrapper, icu, dotnet-runtime, openssl, nixosTests, zlib }:
 
 let
-  os = if stdenv.isDarwin then "osx" else "linux";
+  os = if stdenv.hostPlatform.isDarwin then "osx" else "linux";
   arch = {
     x86_64-linux = "x64";
     aarch64-linux = "arm64";
diff --git a/pkgs/servers/readarr/default.nix b/pkgs/servers/readarr/default.nix
index a0c1cea2c586..3a67b592fcc3 100644
--- a/pkgs/servers/readarr/default.nix
+++ b/pkgs/servers/readarr/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchurl, libmediainfo, sqlite, curl, makeWrapper, icu, dotnet-runtime, openssl, nixosTests, zlib }:
 
 let
-  os = if stdenv.isDarwin then "osx" else "linux";
+  os = if stdenv.hostPlatform.isDarwin then "osx" else "linux";
   arch = {
     x86_64-linux = "x64";
     aarch64-linux = "arm64";
diff --git a/pkgs/servers/redpanda/default.nix b/pkgs/servers/redpanda/default.nix
index 5202cce75b9e..231f6ee216a5 100644
--- a/pkgs/servers/redpanda/default.nix
+++ b/pkgs/servers/redpanda/default.nix
@@ -1,5 +1,5 @@
 { buildGoModule
-, doCheck ? !stdenv.isDarwin # Can't start localhost test server in MacOS sandbox.
+, doCheck ? !stdenv.hostPlatform.isDarwin # Can't start localhost test server in MacOS sandbox.
 , fetchFromGitHub
 , installShellFiles
 , lib
diff --git a/pkgs/servers/roapi/http.nix b/pkgs/servers/roapi/http.nix
index 019c979b47a2..8c0dc4ee59f2 100644
--- a/pkgs/servers/roapi/http.nix
+++ b/pkgs/servers/roapi/http.nix
@@ -5,7 +5,7 @@
 let
   pname = "roapi-http";
   version = "0.6.0";
-  target = lib.optionalString stdenv.isDarwin "apple-darwin";
+  target = lib.optionalString stdenv.hostPlatform.isDarwin "apple-darwin";
 in
 # TODO build from source, currently compilation fails on darwin on snmalloc with
 #  ./mem/../ds/../pal/pal_apple.h:277:64: error: use of undeclared identifier 'kCCSuccess'
diff --git a/pkgs/servers/rpiplay/default.nix b/pkgs/servers/rpiplay/default.nix
index 90f773c73db1..8ca4cb534197 100644
--- a/pkgs/servers/rpiplay/default.nix
+++ b/pkgs/servers/rpiplay/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/FD-/RPiPlay";
     description = "Open-source implementation of an AirPlay mirroring server";
     license = licenses.gpl3Plus;
diff --git a/pkgs/servers/rtrtr/default.nix b/pkgs/servers/rtrtr/default.nix
index fa5b4a30c63a..3697043c246e 100644
--- a/pkgs/servers/rtrtr/default.nix
+++ b/pkgs/servers/rtrtr/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-ToJLE4nqgTqg5D4Qh2zi+wjmcdwDo0aupoDwKJCTwnM=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
   nativeBuildInputs = [ pkg-config ];
 
   buildNoDefaultFeatures = true;
diff --git a/pkgs/servers/rustdesk-server/default.nix b/pkgs/servers/rustdesk-server/default.nix
index 14cc9afcf484..3b6ddf3bb1ec 100644
--- a/pkgs/servers/rustdesk-server/default.nix
+++ b/pkgs/servers/rustdesk-server/default.nix
@@ -38,7 +38,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     libsodium
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/servers/rustypaste/default.nix b/pkgs/servers/rustypaste/default.nix
index 97fdacecb9db..f0a1fc8c3b9c 100644
--- a/pkgs/servers/rustypaste/default.nix
+++ b/pkgs/servers/rustypaste/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-b9KZzevaTl52pduN4gkF8k6yqgDcE8x5sOwmPxzYfWA=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/servers/samba/4.x.nix b/pkgs/servers/samba/4.x.nix
index e2a9345d4c07..1e0f60224b5f 100644
--- a/pkgs/servers/samba/4.x.nix
+++ b/pkgs/servers/samba/4.x.nix
@@ -45,9 +45,9 @@
 , enableRegedit ? true, ncurses
 , enableCephFS ? false, ceph
 , enableGlusterFS ? false, glusterfs, libuuid
-, enableAcl ? (!stdenv.isDarwin), acl
-, enableLibunwind ? (!stdenv.isDarwin), libunwind
-, enablePam ? (!stdenv.isDarwin), pam
+, enableAcl ? (!stdenv.hostPlatform.isDarwin), acl
+, enableLibunwind ? (!stdenv.hostPlatform.isDarwin), libunwind
+, enablePam ? (!stdenv.hostPlatform.isDarwin), pam
 }:
 
 let
@@ -100,10 +100,10 @@ stdenv.mkDerivation (finalAttrs: {
     docbook_xml_dtd_45
     cmocka
     rpcsvc-proto
-  ] ++ optionals stdenv.isLinux [
+  ] ++ optionals stdenv.hostPlatform.isLinux [
     buildPackages.stdenv.cc
   ] ++ optional (stdenv.buildPlatform != stdenv.hostPlatform) samba # asn1_compile/compile_et
-    ++ optionals stdenv.isDarwin [
+    ++ optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ];
 
@@ -124,16 +124,16 @@ stdenv.mkDerivation (finalAttrs: {
     libtasn1
     tdb
     libxcrypt
-  ] ++ optionals stdenv.isLinux [ liburing systemd ]
-    ++ optionals stdenv.isDarwin [ libiconv ]
+  ] ++ optionals stdenv.hostPlatform.isLinux [ liburing systemd ]
+    ++ optionals stdenv.hostPlatform.isDarwin [ libiconv ]
     ++ optionals enableLDAP [ openldap.dev python3Packages.markdown ]
-    ++ optionals (!enableLDAP && stdenv.isLinux) [ ldb talloc tevent ]
-    ++ optional (enablePrinting && stdenv.isLinux) cups
+    ++ optionals (!enableLDAP && stdenv.hostPlatform.isLinux) [ ldb talloc tevent ]
+    ++ optional (enablePrinting && stdenv.hostPlatform.isLinux) cups
     ++ optional enableMDNS avahi
     ++ optionals enableDomainController [ gpgme lmdb python3Packages.dnspython ]
     ++ optional enableRegedit ncurses
-    ++ optional (enableCephFS && stdenv.isLinux) (lib.getDev ceph)
-    ++ optionals (enableGlusterFS && stdenv.isLinux) [ glusterfs libuuid ]
+    ++ optional (enableCephFS && stdenv.hostPlatform.isLinux) (lib.getDev ceph)
+    ++ optionals (enableGlusterFS && stdenv.hostPlatform.isLinux) [ glusterfs libuuid ]
     ++ optional enableAcl acl
     ++ optional enableLibunwind libunwind
     ++ optional enablePam pam;
@@ -165,7 +165,7 @@ stdenv.mkDerivation (finalAttrs: {
   ++ optionals (!enableLDAP) [
     "--without-ldap"
     "--without-ads"
-  ] ++ optionals (!enableLDAP && stdenv.isLinux) [
+  ] ++ optionals (!enableLDAP && stdenv.hostPlatform.isLinux) [
     "--bundled-libraries=!ldb,!pyldb-util!talloc,!pytalloc-util,!tevent,!tdb,!pytdb"
   ] ++ optional enableLibunwind "--with-libunwind"
     ++ optional enableProfiling "--with-profiling-data"
@@ -212,12 +212,12 @@ stdenv.mkDerivation (finalAttrs: {
     read -r -d "" SCRIPT << EOF || true
     [ -z "\$SAMBA_LIBS" ] && exit 1;
     BIN='{}';
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     OLD_LIBS="\$(patchelf --print-rpath "\$BIN" 2>/dev/null | tr ':' '\n')";
     ALL_LIBS="\$(echo -e "\$SAMBA_LIBS\n\$OLD_LIBS" | sort | uniq | tr '\n' ':')";
     patchelf --set-rpath "\$ALL_LIBS" "\$BIN" 2>/dev/null || exit $?;
     patchelf --shrink-rpath "\$BIN";
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id \$BIN \$BIN
     for old_rpath in \$(otool -L \$BIN | grep /private/tmp/ | awk '{print \$1}'); do
       new_rpath=\$(find \$SAMBA_LIBS -name \$(basename \$old_rpath) | head -n 1)
diff --git a/pkgs/servers/search/lnx/default.nix b/pkgs/servers/search/lnx/default.nix
index 447602b0463f..7cda5d44c442 100644
--- a/pkgs/servers/search/lnx/default.nix
+++ b/pkgs/servers/search/lnx/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage {
       "compose-0.1.0" = "sha256-zcniGI3wa+gI3jFTDqHcesX+6hAtNEbW81ABPUcFTXk=";
     };
   };
-  buildInputs = lib.optionals stdenv.isDarwin [ DiskArbitration Foundation ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ DiskArbitration Foundation ];
   meta = with lib; {
     description = "Insanely fast, Feature-rich searching. lnx is the adaptable, typo tollerant deployment of the tantivy search engine. Standing on the shoulders of giants.";
     mainProgram = "lnx";
diff --git a/pkgs/servers/search/meilisearch/default.nix b/pkgs/servers/search/meilisearch/default.nix
index cbb440086976..a58af212b20a 100644
--- a/pkgs/servers/search/meilisearch/default.nix
+++ b/pkgs/servers/search/meilisearch/default.nix
@@ -43,7 +43,7 @@ rustPlatform.buildRustPackage {
 
   nativeBuildInputs = [ rustPlatform.bindgenHook ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     SystemConfiguration
   ];
diff --git a/pkgs/servers/search/qdrant/default.nix b/pkgs/servers/search/qdrant/default.nix
index f9669759171a..587c4aa1d170 100644
--- a/pkgs/servers/search/qdrant/default.nix
+++ b/pkgs/servers/search/qdrant/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
     rust-jemalloc-sys
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     SystemConfiguration
   ];
diff --git a/pkgs/servers/search/quickwit/default.nix b/pkgs/servers/search/quickwit/default.nix
index ccc32cb90056..8f89e1893c3b 100644
--- a/pkgs/servers/search/quickwit/default.nix
+++ b/pkgs/servers/search/quickwit/default.nix
@@ -82,7 +82,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     rust-jemalloc-sys
-  ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   cargoLock = {
     lockFile = ./Cargo.lock;
diff --git a/pkgs/servers/search/typesense/default.nix b/pkgs/servers/search/typesense/default.nix
index 762cc190f242..2a641cd752fc 100644
--- a/pkgs/servers/search/typesense/default.nix
+++ b/pkgs/servers/search/typesense/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
     inherit hash;
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     autoPatchelfHook
   ];
 
diff --git a/pkgs/servers/shairplay/default.nix b/pkgs/servers/shairplay/default.nix
index 2a7e643b60fd..63de8df58fd8 100644
--- a/pkgs/servers/shairplay/default.nix
+++ b/pkgs/servers/shairplay/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   # the build will fail without complaining about a reference to /tmp
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf \
       --set-rpath "${lib.makeLibraryPath buildInputs}:$out/lib" \
       $out/bin/shairplay
diff --git a/pkgs/servers/shairport-sync/default.nix b/pkgs/servers/shairport-sync/default.nix
index a9043f65331d..f74813cd4608 100644
--- a/pkgs/servers/shairport-sync/default.nix
+++ b/pkgs/servers/shairport-sync/default.nix
@@ -28,8 +28,8 @@
 , enablePipewire ? true
 , enableJack ? true
 , enableMetadata ? false
-, enableMpris ? stdenv.isLinux
-, enableDbus ? stdenv.isLinux
+, enableMpris ? stdenv.hostPlatform.isLinux
+, enableDbus ? stdenv.hostPlatform.isLinux
 , enableSoxr ? true
 , enableLibdaemon ? false
 }:
@@ -81,7 +81,7 @@ stdenv.mkDerivation rec {
     libuuid
     ffmpeg
   ]
-  ++ optional stdenv.isLinux glib;
+  ++ optional stdenv.hostPlatform.isLinux glib;
 
   postPatch = ''
     sed -i -e 's/G_BUS_TYPE_SYSTEM/G_BUS_TYPE_SESSION/g' dbus-service.c
diff --git a/pkgs/servers/shishi/default.nix b/pkgs/servers/shishi/default.nix
index 4b3060d90b04..926486c73c97 100644
--- a/pkgs/servers/shishi/default.nix
+++ b/pkgs/servers/shishi/default.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
   ];
 
   env.NIX_CFLAGS_COMPILE
-    = optionalString stdenv.isDarwin "-DBIND_8_COMPAT";
+    = optionalString stdenv.hostPlatform.isDarwin "-DBIND_8_COMPAT";
 
   doCheck = true;
 
diff --git a/pkgs/servers/simple-http-server/default.nix b/pkgs/servers/simple-http-server/default.nix
index ff83e3f62d08..cb4fe1300062 100644
--- a/pkgs/servers/simple-http-server/default.nix
+++ b/pkgs/servers/simple-http-server/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/servers/sip/freeswitch/default.nix b/pkgs/servers/sip/freeswitch/default.nix
index 1e7021c7a7e5..9d11ad68a405 100644
--- a/pkgs/servers/sip/freeswitch/default.nix
+++ b/pkgs/servers/sip/freeswitch/default.nix
@@ -90,7 +90,7 @@ defaultModules = mods: with mods; [
   xml_int.cdr
   xml_int.rpc
   xml_int.scgi
-] ++ lib.optionals stdenv.isLinux [ endpoints.gsmopen ];
+] ++ lib.optionals stdenv.hostPlatform.isLinux [ endpoints.gsmopen ];
 
 enabledModules = (if modules != null then modules else defaultModules) availableModules;
 
@@ -134,7 +134,7 @@ stdenv.mkDerivation rec {
     libuuid libxcrypt
   ]
   ++ lib.unique (lib.concatMap (mod: mod.inputs) enabledModules)
-  ++ lib.optionals stdenv.isDarwin [ SystemConfiguration ];
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ SystemConfiguration ];
 
   enableParallelBuilding = true;
 
@@ -168,6 +168,6 @@ stdenv.mkDerivation rec {
     license = lib.licenses.mpl11;
     maintainers = with lib.maintainers; [ mikaelfangel ];
     platforms = with lib.platforms; unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/servers/snac2/default.nix b/pkgs/servers/snac2/default.nix
index c4e30fa74f66..0b8f718d0c96 100644
--- a/pkgs/servers/snac2/default.nix
+++ b/pkgs/servers/snac2/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [ "PREFIX=$(out)" ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-Dst_mtim=st_mtimespec"
     "-Dst_ctim=st_ctimespec"
   ]);
diff --git a/pkgs/servers/sozu/default.nix b/pkgs/servers/sozu/default.nix
index f0467f7f9c27..10427438e27d 100644
--- a/pkgs/servers/sozu/default.nix
+++ b/pkgs/servers/sozu/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ protobuf ];
 
   buildInputs =
-    lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
+    lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
 
   doCheck = false;
 
@@ -47,6 +47,6 @@ rustPlatform.buildRustPackage rec {
     maintainers = with maintainers; [ Br1ght0ne gaelreyrol ];
     mainProgram = "sozu";
     # error[E0432]: unresolved import `std::arch::x86_64`
-    broken = !stdenv.isx86_64;
+    broken = !stdenv.hostPlatform.isx86_64;
   };
 }
diff --git a/pkgs/servers/sql/mariadb/connector-c/default.nix b/pkgs/servers/sql/mariadb/connector-c/default.nix
index a2da81a0094f..e27179e8ab2f 100644
--- a/pkgs/servers/sql/mariadb/connector-c/default.nix
+++ b/pkgs/servers/sql/mariadb/connector-c/default.nix
@@ -44,7 +44,7 @@ in stdenv.mkDerivation {
   '';
 
   # The cmake setup-hook uses $out/lib by default, this is not the case here.
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     cmakeFlagsArray+=("-DCMAKE_INSTALL_NAME_DIR=$out/lib/mariadb")
   '';
 
diff --git a/pkgs/servers/sql/materialize/default.nix b/pkgs/servers/sql/materialize/default.nix
index 346e83f12206..1738b4fb92d6 100644
--- a/pkgs/servers/sql/materialize/default.nix
+++ b/pkgs/servers/sql/materialize/default.nix
@@ -101,13 +101,13 @@ rustPlatform.buildRustPackage rec {
     rustPlatform.bindgenHook
   ]
     # Provides the mig command used by the krb5-src build script
-    ++ lib.optional stdenv.isDarwin bootstrap_cmds;
+    ++ lib.optional stdenv.hostPlatform.isDarwin bootstrap_cmds;
 
   # Needed to get openssl-sys to use pkg-config.
   OPENSSL_NO_VENDOR = 1;
 
   buildInputs = [ openssl rdkafka libclang ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv DiskArbitration Foundation ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv DiskArbitration Foundation ];
 
   # the check phase requires linking with rocksdb which can be a problem since
   # the rust rocksdb crate is not updated very often.
diff --git a/pkgs/servers/sql/mysql/8.0.x.nix b/pkgs/servers/sql/mysql/8.0.x.nix
index 4a072ae3f46b..dbd09f9516a4 100644
--- a/pkgs/servers/sql/mysql/8.0.x.nix
+++ b/pkgs/servers/sql/mysql/8.0.x.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   nativeBuildInputs = [ bison cmake pkg-config ]
-    ++ lib.optionals (!stdenv.isDarwin) [ rpcsvc-proto ];
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ rpcsvc-proto ];
 
   patches = [
     ./no-force-outline-atomics.patch # Do not force compilers to turn on -moutline-atomics switch
@@ -28,9 +28,9 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     boost (curl.override { inherit openssl; }) icu libedit libevent lz4 ncurses openssl protobuf re2 readline zlib
     zstd libfido2
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     numactl libtirpc
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools CoreServices developer_cmds DarwinTools
   ];
 
diff --git a/pkgs/servers/sql/percona-server/innovation.nix b/pkgs/servers/sql/percona-server/innovation.nix
index 27272410033f..61b2ff7bb4a1 100644
--- a/pkgs/servers/sql/percona-server/innovation.nix
+++ b/pkgs/servers/sql/percona-server/innovation.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation (finalAttrs: {
     bison cmake pkg-config makeWrapper
     # required for scripts/CMakeLists.txt
     coreutils gnugrep procps
-  ] ++ lib.optionals (!stdenv.isDarwin) [ rpcsvc-proto ];
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ rpcsvc-proto ];
 
   patches = [
     ./no-force-outline-atomics.patch # Do not force compilers to turn on -moutline-atomics switch
@@ -45,13 +45,13 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     boost (curl.override { inherit openssl; }) icu libedit libevent lz4 ncurses openssl protobuf re2 readline zlib
     zstd libfido2 openldap perl cyrus_sasl
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     numactl libtirpc systemd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools CoreServices developer_cmds DarwinTools
   ]
-  ++ lib.optional (stdenv.isLinux && withJemalloc) jemalloc
-  ++ lib.optional (stdenv.isLinux && withTcmalloc) gperftools;
+  ++ lib.optional (stdenv.hostPlatform.isLinux && withJemalloc) jemalloc
+  ++ lib.optional (stdenv.hostPlatform.isLinux && withTcmalloc) gperftools;
 
   outputs = [ "out" "static" ];
 
@@ -81,12 +81,12 @@ stdenv.mkDerivation (finalAttrs: {
     "-DINSTALL_SHAREDIR=share/mysql"
 
 
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-DWITH_SYSTEMD=1"
     "-DWITH_SYSTEMD_DEBUG=1"
   ]
-  ++ lib.optional (stdenv.isLinux && withJemalloc) "-DWITH_JEMALLOC=1"
-  ++ lib.optional (stdenv.isLinux && withTcmalloc) "-DWITH_TCMALLOC=1";
+  ++ lib.optional (stdenv.hostPlatform.isLinux && withJemalloc) "-DWITH_JEMALLOC=1"
+  ++ lib.optional (stdenv.hostPlatform.isLinux && withTcmalloc) "-DWITH_TCMALLOC=1";
 
   postInstall = ''
     moveToOutput "lib/*.a" $static
@@ -97,7 +97,7 @@ stdenv.mkDerivation (finalAttrs: {
     wrapProgram $out/bin/mysql_config --prefix PATH : ${lib.makeBinPath [ coreutils gnused ]}
     wrapProgram $out/bin/ps_mysqld_helper --prefix PATH : ${lib.makeBinPath [ coreutils gnugrep ]}
     wrapProgram $out/bin/ps-admin --prefix PATH : ${lib.makeBinPath [ coreutils gnugrep ]}
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     wrapProgram $out/bin/mysqld_multi --prefix PATH : ${lib.makeBinPath [ coreutils gnugrep ]}
   '';
 
diff --git a/pkgs/servers/sql/percona-server/lts.nix b/pkgs/servers/sql/percona-server/lts.nix
index 19e81654dd7b..352b0239c429 100644
--- a/pkgs/servers/sql/percona-server/lts.nix
+++ b/pkgs/servers/sql/percona-server/lts.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation (finalAttrs: {
     bison cmake pkg-config makeWrapper
     # required for scripts/CMakeLists.txt
     coreutils gnugrep procps
-  ] ++ lib.optionals (!stdenv.isDarwin) [ rpcsvc-proto ];
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ rpcsvc-proto ];
 
   patches = [
     ./no-force-outline-atomics.patch # Do not force compilers to turn on -moutline-atomics switch
@@ -39,9 +39,9 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     boost (curl.override { inherit openssl; }) icu libedit libevent lz4 ncurses openssl protobuf re2 readline zlib
     zstd libfido2 openldap perl cyrus_sasl
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     numactl libtirpc
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools CoreServices developer_cmds DarwinTools
   ];
 
diff --git a/pkgs/servers/sql/pgbouncer/default.nix b/pkgs/servers/sql/pgbouncer/default.nix
index 17bb24562d7e..dfffa518a5fd 100644
--- a/pkgs/servers/sql/pgbouncer/default.nix
+++ b/pkgs/servers/sql/pgbouncer/default.nix
@@ -11,9 +11,9 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libevent openssl c-ares ]
-    ++ lib.optional stdenv.isLinux systemd;
+    ++ lib.optional stdenv.hostPlatform.isLinux systemd;
   enableParallelBuilding = true;
-  configureFlags = lib.optional stdenv.isLinux "--with-systemd";
+  configureFlags = lib.optional stdenv.hostPlatform.isLinux "--with-systemd";
 
   passthru.tests = {
     pgbouncer = nixosTests.pgbouncer;
diff --git a/pkgs/servers/sql/pgcat/default.nix b/pkgs/servers/sql/pgcat/default.nix
index 49de401a75dd..525380e46f24 100644
--- a/pkgs/servers/sql/pgcat/default.nix
+++ b/pkgs/servers/sql/pgcat/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-QqwUEbWKSUuxzYjWpVpQuKZDiNib1gM2eZJ4y7XIzXY=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/servers/sql/pgpool/default.nix b/pkgs/servers/sql/pgpool/default.nix
index f1762be17f2c..b4f5724bcf77 100644
--- a/pkgs/servers/sql/pgpool/default.nix
+++ b/pkgs/servers/sql/pgpool/default.nix
@@ -4,7 +4,7 @@
 , postgresql
 , openssl
 , libxcrypt
-, withPam ? stdenv.isLinux
+, withPam ? stdenv.hostPlatform.isLinux
 , pam
 }:
 
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
     "sysconfdir=\${out}/etc"
   ];
 
-  patches = lib.optionals (stdenv.isDarwin) [
+  patches = lib.optionals (stdenv.hostPlatform.isDarwin) [
     # Build checks for strlcpy being available in the system, but doesn't
     # actually exclude its own copy from being built
     ./darwin-strlcpy.patch
diff --git a/pkgs/servers/sql/postgresql/ext/h3-pg.nix b/pkgs/servers/sql/postgresql/ext/h3-pg.nix
index 2b8edb366ffa..ae5252092530 100644
--- a/pkgs/servers/sql/postgresql/ext/h3-pg.nix
+++ b/pkgs/servers/sql/postgresql/ext/h3-pg.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation (finalAttrs: {
   postPatch = ''
     substituteInPlace CMakeLists.txt \
       --replace "add_subdirectory(cmake/h3)" "include_directories(${lib.getDev h3_4}/include/h3)"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace cmake/AddPostgreSQLExtension.cmake \
       --replace "INTERPROCEDURAL_OPTIMIZATION TRUE" ""
   '';
diff --git a/pkgs/servers/sql/postgresql/ext/lantern.nix b/pkgs/servers/sql/postgresql/ext/lantern.nix
index 1e632228663b..9a3e01d53537 100644
--- a/pkgs/servers/sql/postgresql/ext/lantern.nix
+++ b/pkgs/servers/sql/postgresql/ext/lantern.nix
@@ -74,6 +74,6 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = [ ];
     platforms = postgresql.meta.platforms;
     # error: use of undeclared identifier 'aligned_alloc'
-    broken = stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13";
+    broken = stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13";
   };
 })
diff --git a/pkgs/servers/sql/postgresql/ext/pgvecto-rs/default.nix b/pkgs/servers/sql/postgresql/ext/pgvecto-rs/default.nix
index aca5c543cb24..e8b3af416ca7 100644
--- a/pkgs/servers/sql/postgresql/ext/pgvecto-rs/default.nix
+++ b/pkgs/servers/sql/postgresql/ext/pgvecto-rs/default.nix
@@ -93,7 +93,7 @@ in
 
   meta = with lib; {
     # Upstream removed support for PostgreSQL 12 and 13 on 0.3.0: https://github.com/tensorchord/pgvecto.rs/issues/343
-    broken = stdenv.isDarwin || (versionOlder postgresql.version "14");
+    broken = stdenv.hostPlatform.isDarwin || (versionOlder postgresql.version "14");
     description = "Scalable, Low-latency and Hybrid-enabled Vector Search in Postgres";
     homepage = "https://github.com/tensorchord/pgvecto.rs";
     license = licenses.asl20;
diff --git a/pkgs/servers/sql/postgresql/ext/postgis.nix b/pkgs/servers/sql/postgresql/ext/postgis.nix
index 240137846b24..109876b6e9d2 100644
--- a/pkgs/servers/sql/postgresql/ext/postgis.nix
+++ b/pkgs/servers/sql/postgresql/ext/postgis.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     json_c
     protobufc
     pcre2.dev
-  ] ++ lib.optional stdenv.isDarwin libiconv;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
   nativeBuildInputs = [
     perl
     pkg-config
@@ -89,7 +89,7 @@ stdenv.mkDerivation rec {
     ln -s ${postgresql}/bin/postgres $out/bin/postgres
   '';
 
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
 
   preCheck = ''
     substituteInPlace regress/run_test.pl --replace-fail "/share/contrib/postgis" "$out/share/postgresql/contrib/postgis"
diff --git a/pkgs/servers/sql/postgresql/ext/timescaledb.nix b/pkgs/servers/sql/postgresql/ext/timescaledb.nix
index 0e5651085ea1..92b6ad4fea88 100644
--- a/pkgs/servers/sql/postgresql/ext/timescaledb.nix
+++ b/pkgs/servers/sql/postgresql/ext/timescaledb.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [ "-DSEND_TELEMETRY_DEFAULT=OFF" "-DREGRESS_CHECKS=OFF" "-DTAP_CHECKS=OFF" ]
     ++ lib.optionals (!enableUnfree) [ "-DAPACHE_ONLY=ON" ]
-    ++ lib.optionals stdenv.isDarwin [ "-DLINTER=OFF" ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "-DLINTER=OFF" ];
 
   # Fix the install phase which tries to install into the pgsql extension dir,
   # and cannot be manually overridden. This is rather fragile but works OK.
diff --git a/pkgs/servers/sql/postgresql/generic.nix b/pkgs/servers/sql/postgresql/generic.nix
index 474ca2563ba1..69aa8a377443 100644
--- a/pkgs/servers/sql/postgresql/generic.nix
+++ b/pkgs/servers/sql/postgresql/generic.nix
@@ -103,8 +103,8 @@ let
       ++ lib.optionals systemdSupport' [ systemdLibs ]
       ++ lib.optionals pythonSupport [ python3 ]
       ++ lib.optionals gssSupport [ libkrb5 ]
-      ++ lib.optionals stdenv'.isLinux [ linux-pam ]
-      ++ lib.optionals (!stdenv'.isDarwin) [ libossp_uuid ];
+      ++ lib.optionals stdenv'.hostPlatform.isLinux [ linux-pam ]
+      ++ lib.optionals (!stdenv'.hostPlatform.isDarwin) [ libossp_uuid ];
 
     nativeBuildInputs = [
       makeWrapper
@@ -138,16 +138,16 @@ let
       "--with-system-tzdata=${tzdata}/share/zoneinfo"
       "--enable-debug"
       (lib.optionalString systemdSupport' "--with-systemd")
-      (if stdenv'.isDarwin then "--with-uuid=e2fs" else "--with-ossp-uuid")
+      (if stdenv'.hostPlatform.isDarwin then "--with-uuid=e2fs" else "--with-ossp-uuid")
     ] ++ lib.optionals lz4Enabled [ "--with-lz4" ]
       ++ lib.optionals zstdEnabled [ "--with-zstd" ]
       ++ lib.optionals gssSupport [ "--with-gssapi" ]
       ++ lib.optionals pythonSupport [ "--with-python" ]
       ++ lib.optionals jitSupport [ "--with-llvm" ]
-      ++ lib.optionals stdenv'.isLinux [ "--with-pam" ]
+      ++ lib.optionals stdenv'.hostPlatform.isLinux [ "--with-pam" ]
       # This could be removed once the upstream issue is resolved:
       # https://postgr.es/m/flat/427c7c25-e8e1-4fc5-a1fb-01ceff185e5b%40technowledgy.de
-      ++ lib.optionals (stdenv'.isDarwin && atLeast "16") [ "LDFLAGS_EX_BE=-Wl,-export_dynamic" ];
+      ++ lib.optionals (stdenv'.hostPlatform.isDarwin && atLeast "16") [ "LDFLAGS_EX_BE=-Wl,-export_dynamic" ];
 
     patches = [
       (if atLeast "16" then ./patches/relative-to-symlinks-16+.patch else ./patches/relative-to-symlinks.patch)
@@ -158,14 +158,14 @@ let
 
       (substituteAll {
         src = ./patches/locale-binary-path.patch;
-        locale = "${if stdenv.isDarwin then darwin.adv_cmds else lib.getBin stdenv.cc.libc}/bin/locale";
+        locale = "${if stdenv.hostPlatform.isDarwin then darwin.adv_cmds else lib.getBin stdenv.cc.libc}/bin/locale";
       })
     ] ++ lib.optionals stdenv'.hostPlatform.isMusl (
       # Using fetchurl instead of fetchpatch on purpose: https://github.com/NixOS/nixpkgs/issues/240141
       map fetchurl (lib.attrValues muslPatches)
-    ) ++ lib.optionals stdenv'.isLinux  [
+    ) ++ lib.optionals stdenv'.hostPlatform.isLinux  [
       (if atLeast "13" then ./patches/socketdir-in-run-13+.patch else ./patches/socketdir-in-run.patch)
-    ] ++ lib.optionals (stdenv'.isDarwin && olderThan "16") [
+    ] ++ lib.optionals (stdenv'.hostPlatform.isDarwin && olderThan "16") [
       ./patches/export-dynamic-darwin-15-.patch
     ];
 
@@ -229,7 +229,7 @@ let
         wrapProgram $out/bin/initdb --prefix PATH ":" ${glibc.bin}/bin
       '';
 
-    doCheck = !stdenv'.isDarwin;
+    doCheck = !stdenv'.hostPlatform.isDarwin;
     # autodetection doesn't seem to able to find this, but it's there.
     checkTarget = "check";
 
diff --git a/pkgs/servers/sql/proxysql/default.nix b/pkgs/servers/sql/proxysql/default.nix
index e0a6f23a4631..ed04908180ee 100644
--- a/pkgs/servers/sql/proxysql/default.nix
+++ b/pkgs/servers/sql/proxysql/default.nix
@@ -164,7 +164,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "High-performance MySQL proxy";
     mainProgram = "proxysql";
     homepage = "https://proxysql.com/";
diff --git a/pkgs/servers/sql/sqld/default.nix b/pkgs/servers/sql/sqld/default.nix
index db78ebafc812..79c52798c6b8 100644
--- a/pkgs/servers/sql/sqld/default.nix
+++ b/pkgs/servers/sql/sqld/default.nix
@@ -51,7 +51,7 @@ rustPlatform.buildRustPackage rec {
     openssl
     sqlite
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   env.ZSTD_SYS_USE_PKG_CONFIG = true;
 
diff --git a/pkgs/servers/sqlpage/default.nix b/pkgs/servers/sqlpage/default.nix
index c7c06a6d50c4..c6055d601535 100644
--- a/pkgs/servers/sqlpage/default.nix
+++ b/pkgs/servers/sqlpage/default.nix
@@ -86,7 +86,7 @@ rustPlatform.buildRustPackage rec {
       sqlite
       zstd
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreFoundation
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/servers/squid/default.nix b/pkgs/servers/squid/default.nix
index 9229359d9159..998b2d9ada44 100644
--- a/pkgs/servers/squid/default.nix
+++ b/pkgs/servers/squid/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [
     perl openldap db cyrus_sasl expat libxml2 openssl
-  ] ++ lib.optionals stdenv.isLinux [ libcap pam systemd ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ libcap pam systemd ];
 
   enableParallelBuilding = true;
 
@@ -30,7 +30,7 @@ stdenv.mkDerivation (finalAttrs: {
     "--enable-delay-pools"
     "--enable-x-accelerator-vary"
     "--enable-htcp"
-  ] ++ lib.optional (stdenv.isLinux && !stdenv.hostPlatform.isMusl)
+  ] ++ lib.optional (stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isMusl)
     "--enable-linux-netfilter";
 
   doCheck = true;
diff --git a/pkgs/servers/sslh/default.nix b/pkgs/servers/sslh/default.nix
index a9ca0c8f2585..cfb15d6d54f8 100644
--- a/pkgs/servers/sslh/default.nix
+++ b/pkgs/servers/sslh/default.nix
@@ -13,9 +13,9 @@ stdenv.mkDerivation rec {
 
   postPatch = "patchShebangs *.sh";
 
-  buildInputs = [ libev libconfig perl pcre2 ] ++ lib.optionals stdenv.isLinux [ libcap tcp_wrappers ];
+  buildInputs = [ libev libconfig perl pcre2 ] ++ lib.optionals stdenv.hostPlatform.isLinux [ libcap tcp_wrappers ];
 
-  makeFlags = lib.optionals stdenv.isLinux [ "USELIBCAP=1" "USELIBWRAP=1" ];
+  makeFlags = lib.optionals stdenv.hostPlatform.isLinux [ "USELIBCAP=1" "USELIBWRAP=1" ];
 
   postInstall = ''
     # install all flavours
diff --git a/pkgs/servers/static-web-server/default.nix b/pkgs/servers/static-web-server/default.nix
index 3e29f5aa42d7..b57dafed1d48 100644
--- a/pkgs/servers/static-web-server/default.nix
+++ b/pkgs/servers/static-web-server/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
     })
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   # Some tests rely on timestamps newer than 18 Nov 1974 00:00:00
   preCheck = ''
diff --git a/pkgs/servers/sunshine/default.nix b/pkgs/servers/sunshine/default.nix
index 9b56cccf1528..6ced9624b741 100644
--- a/pkgs/servers/sunshine/default.nix
+++ b/pkgs/servers/sunshine/default.nix
@@ -139,7 +139,7 @@ stdenv'.mkDerivation rec {
     miniupnpc
   ] ++ lib.optionals cudaSupport [
     cudaPackages.cudatoolkit
-  ] ++ lib.optionals stdenv.isx86_64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isx86_64 [
     intel-media-sdk
   ];
 
diff --git a/pkgs/servers/swego/default.nix b/pkgs/servers/swego/default.nix
index a44664809944..f26b33856d11 100644
--- a/pkgs/servers/swego/default.nix
+++ b/pkgs/servers/swego/default.nix
@@ -38,7 +38,7 @@ buildGoModule rec {
     maintainers = with maintainers; [ fab ];
     # darwin crashes with:
     # src/controllers/parsingArgs.go:130:4: undefined: PrintEmbeddedFiles
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "swego";
   };
 }
diff --git a/pkgs/servers/tailscale/default.nix b/pkgs/servers/tailscale/default.nix
index 10b88a04c707..b24131411987 100644
--- a/pkgs/servers/tailscale/default.nix
+++ b/pkgs/servers/tailscale/default.nix
@@ -39,7 +39,7 @@ buildGoModule {
 
   vendorHash = "sha256-HJEgBs2GOzXvRa95LdwySQmG4/+QwupFDBGrQT6Y2vE=";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ makeWrapper ] ++ [ installShellFiles ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ makeWrapper ] ++ [ installShellFiles ];
 
   CGO_ENABLED = 0;
 
@@ -60,7 +60,7 @@ buildGoModule {
 
   postInstall = ''
     ln -s $out/bin/tailscaled $out/bin/tailscale
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/tailscaled \
       --prefix PATH : ${lib.makeBinPath [ iproute2 iptables getent shadow ]} \
       --suffix PATH : ${lib.makeBinPath [ procps ]}
diff --git a/pkgs/servers/teleport/generic.nix b/pkgs/servers/teleport/generic.nix
index 87719f03eb72..2fcdc7f4a655 100644
--- a/pkgs/servers/teleport/generic.nix
+++ b/pkgs/servers/teleport/generic.nix
@@ -54,7 +54,7 @@ let
     buildAndTestSubdir = "lib/srv/desktop/rdp/rdpclient";
 
     buildInputs = [ openssl ]
-      ++ lib.optionals stdenv.isDarwin [ CoreFoundation Security ];
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreFoundation Security ];
     nativeBuildInputs = [ pkg-config ];
 
     # https://github.com/NixOS/nixpkgs/issues/161570 ,
@@ -144,7 +144,7 @@ buildGoModule rec {
     ++ lib.optional withRdpClient "desktop_access_rdp";
 
   buildInputs = [ openssl libfido2 ]
-    ++ lib.optionals (stdenv.isDarwin && withRdpClient) [ CoreFoundation Security AppKit ];
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && withRdpClient) [ CoreFoundation Security AppKit ];
   nativeBuildInputs = [ makeWrapper pkg-config ];
 
   patches = extPatches ++ [
diff --git a/pkgs/servers/trezord/default.nix b/pkgs/servers/trezord/default.nix
index 247ac6832db3..3852f139935c 100644
--- a/pkgs/servers/trezord/default.nix
+++ b/pkgs/servers/trezord/default.nix
@@ -30,8 +30,8 @@ buildGoModule rec {
     })
   ];
 
-  propagatedBuildInputs = lib.optionals stdenv.isLinux [ trezor-udev-rules ]
-    ++ lib.optionals stdenv.isDarwin [ AppKit ];
+  propagatedBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ trezor-udev-rules ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ];
 
   ldflags = [
     "-s" "-w"
diff --git a/pkgs/servers/unpackerr/default.nix b/pkgs/servers/unpackerr/default.nix
index d3cb4c7d47b2..30091834a856 100644
--- a/pkgs/servers/unpackerr/default.nix
+++ b/pkgs/servers/unpackerr/default.nix
@@ -13,7 +13,7 @@ buildGoModule rec {
 
   vendorHash = "sha256-wWIw0gNn5tqRq0udzPy/n2OkiIVESpSotOSn2YlBNS4=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Cocoa WebKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa WebKit ];
 
   ldflags = [ "-s" "-w" "-X golift.io/version.Version=${version}" ];
 
diff --git a/pkgs/servers/ursadb/default.nix b/pkgs/servers/ursadb/default.nix
index c79156a8f3c2..c8111fc648b9 100644
--- a/pkgs/servers/ursadb/default.nix
+++ b/pkgs/servers/ursadb/default.nix
@@ -32,6 +32,6 @@ stdenv.mkDerivation (finalAttrs: {
     license = licenses.bsd3;
     maintainers = with maintainers; [ msm ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 })
diff --git a/pkgs/servers/uwsgi/default.nix b/pkgs/servers/uwsgi/default.nix
index 1f874236fbd6..7d0729ee4621 100644
--- a/pkgs/servers/uwsgi/default.nix
+++ b/pkgs/servers/uwsgi/default.nix
@@ -9,9 +9,9 @@
 , zlib
 # plugins: list of strings, eg. [ "python2" "python3" ]
 , plugins ? []
-, pam, withPAM ? stdenv.isLinux
+, pam, withPAM ? stdenv.hostPlatform.isLinux
 , systemd, withSystemd ? lib.meta.availableOn stdenv.hostPlatform systemd
-, libcap, withCap ? stdenv.isLinux
+, libcap, withCap ? stdenv.hostPlatform.isLinux
 , python2, python3, ncurses
 , ruby, php
 , makeWrapper, fetchFromGitHub
@@ -92,7 +92,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   buildInputs =  [ jansson pcre libxcrypt ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ expat zlib ]
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ expat zlib ]
     ++ lib.optional withPAM pam
     ++ lib.optional withSystemd systemd
     ++ lib.optional withCap libcap
diff --git a/pkgs/servers/varnish/default.nix b/pkgs/servers/varnish/default.nix
index ddc190a2887a..8814bd41e04b 100644
--- a/pkgs/servers/varnish/default.nix
+++ b/pkgs/servers/varnish/default.nix
@@ -32,7 +32,7 @@ let
       '';
 
       # https://github.com/varnishcache/varnish-cache/issues/1875
-      env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isi686 "-fexcess-precision=standard";
+      env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isi686 "-fexcess-precision=standard";
 
       outputs = [ "out" "dev" "man" ];
 
diff --git a/pkgs/servers/web-apps/ethercalc/node-packages.nix b/pkgs/servers/web-apps/ethercalc/node-packages.nix
index e9c5ff0e4fee..0a4e2b7c9aba 100644
--- a/pkgs/servers/web-apps/ethercalc/node-packages.nix
+++ b/pkgs/servers/web-apps/ethercalc/node-packages.nix
@@ -8,7 +8,7 @@ let
   nodeEnv = import ../../../development/node-packages/node-env.nix {
     inherit (pkgs) stdenv lib python2 runCommand writeTextFile writeShellScript;
     inherit pkgs nodejs;
-    libtool = if pkgs.stdenv.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
+    libtool = if pkgs.stdenv.hostPlatform.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
   };
 in
 import ./node-packages-generated.nix {
diff --git a/pkgs/servers/web-apps/lemmy/server.nix b/pkgs/servers/web-apps/lemmy/server.nix
index 8cb65bfef2bf..416de2b21db7 100644
--- a/pkgs/servers/web-apps/lemmy/server.nix
+++ b/pkgs/servers/web-apps/lemmy/server.nix
@@ -34,7 +34,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = pinData.serverCargoHash;
 
   buildInputs = [ postgresql ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv Security SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security SystemConfiguration ];
 
   # Using OPENSSL_NO_VENDOR is not an option on darwin
   # As of version 0.10.35 rust-openssl looks for openssl on darwin
diff --git a/pkgs/servers/web-apps/pict-rs/0.3.nix b/pkgs/servers/web-apps/pict-rs/0.3.nix
index 11f2479efdbe..9e7ad6e3d204 100644
--- a/pkgs/servers/web-apps/pict-rs/0.3.nix
+++ b/pkgs/servers/web-apps/pict-rs/0.3.nix
@@ -35,7 +35,7 @@ rustPlatform.buildRustPackage rec {
   PROTOC_INCLUDE = "${protobuf}/include";
 
   nativeBuildInputs = [ makeWrapper ];
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   postInstall = ''
     wrapProgram "$out/bin/pict-rs" \
diff --git a/pkgs/servers/web-apps/pict-rs/default.nix b/pkgs/servers/web-apps/pict-rs/default.nix
index 6033db65bf30..fddfd6fffebd 100644
--- a/pkgs/servers/web-apps/pict-rs/default.nix
+++ b/pkgs/servers/web-apps/pict-rs/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
   PROTOC_INCLUDE = "${protobuf}/include";
 
   nativeBuildInputs = [ makeWrapper ];
-  buildInputs = lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
 
   postInstall = ''
     wrapProgram "$out/bin/pict-rs" \
@@ -40,7 +40,7 @@ rustPlatform.buildRustPackage rec {
   passthru.tests = { inherit (nixosTests) pict-rs; };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Simple image hosting service";
     mainProgram = "pict-rs";
     homepage = "https://git.asonix.dog/asonix/pict-rs";
diff --git a/pkgs/servers/webdav-server-rs/default.nix b/pkgs/servers/webdav-server-rs/default.nix
index ad1084597604..e7e5b6a0edb8 100644
--- a/pkgs/servers/webdav-server-rs/default.nix
+++ b/pkgs/servers/webdav-server-rs/default.nix
@@ -5,7 +5,7 @@
 , libtirpc
 , pam
 , rpcsvc-proto
-, enablePAM ? stdenv.isLinux
+, enablePAM ? stdenv.hostPlatform.isLinux
 }:
 
 rustPlatform.buildRustPackage rec {
diff --git a/pkgs/servers/x11/xorg/overrides.nix b/pkgs/servers/x11/xorg/overrides.nix
index b3eb0e74dc68..ad631e419aae 100644
--- a/pkgs/servers/x11/xorg/overrides.nix
+++ b/pkgs/servers/x11/xorg/overrides.nix
@@ -11,7 +11,7 @@
 }:
 
 let
-  inherit (stdenv) isDarwin;
+  inherit (stdenv.hostPlatform) isDarwin;
 
   malloc0ReturnsNullCrossFlag = lib.optional
     (stdenv.hostPlatform != stdenv.buildPlatform)
@@ -87,7 +87,7 @@ self: super:
     x11BuildHook = ./imake.sh;
     patches = [./imake.patch ./imake-cc-wrapper-uberhack.patch];
     setupHook = ./imake-setup-hook.sh;
-    CFLAGS = "-DIMAKE_COMPILETIME_CPP='\"${if stdenv.isDarwin
+    CFLAGS = "-DIMAKE_COMPILETIME_CPP='\"${if stdenv.hostPlatform.isDarwin
       then "${tradcpp}/bin/cpp"
       else "gcc"}\"'";
 
@@ -164,7 +164,7 @@ self: super:
       # Remove useless DocBook XML files.
       rm -rf $out/share/doc
     '';
-    CPP = lib.optionalString stdenv.isDarwin "clang -E -";
+    CPP = lib.optionalString stdenv.hostPlatform.isDarwin "clang -E -";
     propagatedBuildInputs = attrs.propagatedBuildInputs or [] ++ [ xorg.xorgproto ];
   });
 
@@ -263,7 +263,7 @@ self: super:
       ++ lib.optional (stdenv.targetPlatform.useLLVM or false) "ac_cv_path_RAWCPP=cpp";
     propagatedBuildInputs = attrs.propagatedBuildInputs or [] ++ [ xorg.libSM ];
     depsBuildBuild = [ buildPackages.stdenv.cc ];
-    CPP = if stdenv.isDarwin then "clang -E -" else "${stdenv.cc.targetPrefix}cc -E -";
+    CPP = if stdenv.hostPlatform.isDarwin then "clang -E -" else "${stdenv.cc.targetPrefix}cc -E -";
     outputDoc = "devdoc";
     outputs = [ "out" "dev" "devdoc" ];
   });
@@ -794,7 +794,7 @@ self: super:
           ./dont-create-logdir-during-build.patch
         ];
         buildInputs = commonBuildInputs ++ [ libdrm mesa ];
-        propagatedBuildInputs = attrs.propagatedBuildInputs or [] ++ [ xorg.libpciaccess ] ++ commonPropagatedBuildInputs ++ lib.optionals stdenv.isLinux [
+        propagatedBuildInputs = attrs.propagatedBuildInputs or [] ++ [ xorg.libpciaccess ] ++ commonPropagatedBuildInputs ++ lib.optionals stdenv.hostPlatform.isLinux [
           udev
         ];
         depsBuildBuild = [ buildPackages.stdenv.cc ];
@@ -926,7 +926,7 @@ self: super:
       "--with-xkb-bin-directory=${xorg.xkbcomp}/bin"
       "--with-xkb-path=${xorg.xkeyboardconfig}/share/X11/xkb"
       "--with-xkb-output=$out/share/X11/xkb/compiled"
-    ] ++ lib.optional stdenv.isDarwin [
+    ] ++ lib.optional stdenv.hostPlatform.isDarwin [
       "--without-dtrace"
     ];
 
@@ -935,7 +935,7 @@ self: super:
       xorg.libXfont2
       xorg.xtrans
       xorg.libxcvt
-    ] ++ lib.optional stdenv.isDarwin [ Xplugin ];
+    ] ++ lib.optional stdenv.hostPlatform.isDarwin [ Xplugin ];
   });
 
   lndir = super.lndir.overrideAttrs (attrs: {
@@ -1083,7 +1083,7 @@ self: super:
   xmore = addMainProgram super.xmore { };
 
   xorgcffiles = super.xorgcffiles.overrideAttrs (attrs: {
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace $out/lib/X11/config/darwin.cf --replace "/usr/bin/" ""
     '';
   });
diff --git a/pkgs/shells/bash/5.nix b/pkgs/shells/bash/5.nix
index 614b3c377ea2..91da1f05a528 100644
--- a/pkgs/shells/bash/5.nix
+++ b/pkgs/shells/bash/5.nix
@@ -7,7 +7,7 @@
 , util-linux
 
   # patch for cygwin requires readline support
-, interactive ? stdenv.isCygwin
+, interactive ? stdenv.hostPlatform.isCygwin
 , readline
 , withDocs ? false
 , texinfo
diff --git a/pkgs/shells/bash/bash-completion/default.nix b/pkgs/shells/bash/bash-completion/default.nix
index 9e65dcd7c289..6408f0610ff6 100644
--- a/pkgs/shells/bash/bash-completion/default.nix
+++ b/pkgs/shells/bash/bash-completion/default.nix
@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
       --ignore=test/t/test_screen.py
   '';
 
-  prePatch = lib.optionalString stdenv.isDarwin ''
+  prePatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i -e 's/readlink -f/readlink/g' bash_completion completions/*
   '';
 
diff --git a/pkgs/shells/fish/default.nix b/pkgs/shells/fish/default.nix
index 73065cb380fd..82ba76c005b8 100644
--- a/pkgs/shells/fish/default.nix
+++ b/pkgs/shells/fish/default.nix
@@ -177,7 +177,7 @@ let
 
       # tests/checks/complete.fish
       sed -i 's|/bin/ls|${coreutils}/bin/ls|' tests/checks/complete.fish
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       # Tests use pkill/pgrep which are currently not built on Darwin
       # See https://github.com/NixOS/nixpkgs/pull/103180
       rm tests/pexpects/exit.py
@@ -187,7 +187,7 @@ let
       # pexpect tests are flaky in general
       # See https://github.com/fish-shell/fish-shell/issues/8789
       rm tests/pexpects/bind.py
-    '' + lib.optionalString stdenv.isLinux ''
+    '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       # pexpect tests are flaky on aarch64-linux (also x86_64-linux)
       # See https://github.com/fish-shell/fish-shell/issues/8789
       rm tests/pexpects/exit_handlers.py
@@ -208,12 +208,12 @@ let
 
     cmakeFlags = [
       "-DCMAKE_INSTALL_DOCDIR=${placeholder "doc"}/share/doc/fish"
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "-DMAC_CODESIGN_ID=OFF"
     ];
 
     # Fish’s test suite needs to be able to look up process information and send signals.
-    sandboxProfile = lib.optionalString stdenv.isDarwin ''
+    sandboxProfile = lib.optionalString stdenv.hostPlatform.isDarwin ''
       (allow mach-lookup mach-task-name)
       (allow signal (target children))
     '';
@@ -235,7 +235,7 @@ let
       gnused
       groff
       gettext
-    ] ++ lib.optional (!stdenv.isDarwin) man-db;
+    ] ++ lib.optional (!stdenv.hostPlatform.isDarwin) man-db;
 
     doCheck = true;
 
@@ -278,13 +278,13 @@ let
       end
       EOF
 
-    '' + lib.optionalString stdenv.isLinux ''
+    '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       for cur in $out/share/fish/functions/*.fish; do
         sed -e "s|/usr/bin/getent|${getent}/bin/getent|" \
             -i "$cur"
       done
 
-    '' + lib.optionalString (!stdenv.isDarwin) ''
+    '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       sed -i "s|Popen(\['manpath'|Popen(\['${man-db}/bin/manpath'|" \
               "$out/share/fish/tools/create_manpage_completions.py"
       sed -i "s|command manpath|command ${man-db}/bin/manpath|"     \
@@ -308,7 +308,7 @@ let
     passthru = {
       shellPath = "/bin/fish";
       tests = {
-        nixos = lib.optionalAttrs stdenv.isLinux nixosTests.fish;
+        nixos = lib.optionalAttrs stdenv.hostPlatform.isLinux nixosTests.fish;
 
         # Test the fish_config tool by checking the generated splash page.
         # Since the webserver requires a port to run, it is not started.
diff --git a/pkgs/shells/fish/plugins/fzf-fish.nix b/pkgs/shells/fish/plugins/fzf-fish.nix
index 3a70c888c352..1ad4764c46c5 100644
--- a/pkgs/shells/fish/plugins/fzf-fish.nix
+++ b/pkgs/shells/fish/plugins/fzf-fish.nix
@@ -31,7 +31,7 @@ buildFishPlugin rec {
     # Disable tests that are failing, because there is not 'rev' command
     rm tests/preview_file/custom_file_preview.fish
   '' + (
-    if stdenv.isDarwin then ''script /dev/null fish -c "fishtape tests/*/*.fish"''
+    if stdenv.hostPlatform.isDarwin then ''script /dev/null fish -c "fishtape tests/*/*.fish"''
     else ''script -c 'fish -c "fishtape tests/*/*.fish"' ''
   );
 
diff --git a/pkgs/shells/ion/default.nix b/pkgs/shells/ion/default.nix
index 0440a79e760f..a5e7f9edeb9a 100644
--- a/pkgs/shells/ion/default.nix
+++ b/pkgs/shells/ion/default.nix
@@ -34,11 +34,11 @@ rustPlatform.buildRustPackage rec {
     ./build-script.patch
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
-  checkFlags = lib.optionals stdenv.isDarwin [
+  checkFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     # test assumes linux
     "--skip=binary::completer::tests::filename_completion"
   ];
diff --git a/pkgs/shells/nushell/default.nix b/pkgs/shells/nushell/default.nix
index b763526dda60..ef0edeb6a24c 100644
--- a/pkgs/shells/nushell/default.nix
+++ b/pkgs/shells/nushell/default.nix
@@ -38,18 +38,18 @@ rustPlatform.buildRustPackage {
   cargoHash = "sha256-43V0TnYGG2tyWRIGaohIaoN7dxnY1fle2Bp5lDiFlWg=";
 
   nativeBuildInputs = [ pkg-config ]
-    ++ lib.optionals (withDefaultFeatures && stdenv.isLinux) [ python3 ]
-    ++ lib.optionals stdenv.isDarwin [ rustPlatform.bindgenHook ];
+    ++ lib.optionals (withDefaultFeatures && stdenv.hostPlatform.isLinux) [ python3 ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ rustPlatform.bindgenHook ];
 
   buildInputs = [ openssl zstd ]
-    ++ lib.optionals stdenv.isDarwin [ zlib Libsystem Security ]
-    ++ lib.optionals (withDefaultFeatures && stdenv.isLinux) [ xorg.libX11 ]
-    ++ lib.optionals (withDefaultFeatures && stdenv.isDarwin) [ AppKit nghttp2 libgit2 ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ zlib Libsystem Security ]
+    ++ lib.optionals (withDefaultFeatures && stdenv.hostPlatform.isLinux) [ xorg.libX11 ]
+    ++ lib.optionals (withDefaultFeatures && stdenv.hostPlatform.isDarwin) [ AppKit nghttp2 libgit2 ];
 
   buildNoDefaultFeatures = !withDefaultFeatures;
   buildFeatures = additionalFeatures [ ];
 
-  doCheck = ! stdenv.isDarwin; # Skip checks on darwin. Failing tests since 0.96.0
+  doCheck = ! stdenv.hostPlatform.isDarwin; # Skip checks on darwin. Failing tests since 0.96.0
 
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/shells/nushell/plugins/formats.nix b/pkgs/shells/nushell/plugins/formats.nix
index a74721ad9031..7d693118ac01 100644
--- a/pkgs/shells/nushell/plugins/formats.nix
+++ b/pkgs/shells/nushell/plugins/formats.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-Lcgf6+Li1STl4Sko81oBHAnX09A6F7dwYmHJiF2CZ3s=";
 
   nativeBuildInputs = [ pkg-config ] ++ lib.optionals stdenv.cc.isClang [ rustPlatform.bindgenHook ];
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     IOKit
     Foundation
   ];
diff --git a/pkgs/shells/nushell/plugins/gstat.nix b/pkgs/shells/nushell/plugins/gstat.nix
index e430820247dc..06a2fb38d926 100644
--- a/pkgs/shells/nushell/plugins/gstat.nix
+++ b/pkgs/shells/nushell/plugins/gstat.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-NLGEaIGUqgyGegzVyZloLckVGYmfMjwhzVXh327kxRA=";
 
   nativeBuildInputs = [ pkg-config ] ++ lib.optionals stdenv.cc.isClang [ rustPlatform.bindgenHook ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
   cargoBuildFlags = [ "--package nu_plugin_gstat" ];
 
   checkPhase = ''
diff --git a/pkgs/shells/nushell/plugins/net.nix b/pkgs/shells/nushell/plugins/net.nix
index 95d1c36b467f..981f1d208e11 100644
--- a/pkgs/shells/nushell/plugins/net.nix
+++ b/pkgs/shells/nushell/plugins/net.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ rustPlatform.bindgenHook ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
     IOKit
   ];
diff --git a/pkgs/shells/nushell/plugins/polars.nix b/pkgs/shells/nushell/plugins/polars.nix
index 7e9e1623bea6..5865af7139fd 100644
--- a/pkgs/shells/nushell/plugins/polars.nix
+++ b/pkgs/shells/nushell/plugins/polars.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ] ++ lib.optionals stdenv.cc.isClang [ rustPlatform.bindgenHook ];
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       IOKit
       Foundation
     ];
diff --git a/pkgs/shells/nushell/plugins/query.nix b/pkgs/shells/nushell/plugins/query.nix
index 85520b32e0e3..55bd221c8b54 100644
--- a/pkgs/shells/nushell/plugins/query.nix
+++ b/pkgs/shells/nushell/plugins/query.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage {
       openssl
       curl
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       IOKit
       CoreFoundation
     ];
diff --git a/pkgs/shells/powershell/default.nix b/pkgs/shells/powershell/default.nix
index c6d123701589..a29bb9c99010 100644
--- a/pkgs/shells/powershell/default.nix
+++ b/pkgs/shells/powershell/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     less
     makeWrapper
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     autoPatchelfHook
   ];
 
@@ -51,9 +51,9 @@ stdenv.mkDerivation rec {
     libuuid
     libunwind
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.Libsystem
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     lttng-ust
     pam
   ];
@@ -70,7 +70,7 @@ stdenv.mkDerivation rec {
       --set POWERSHELL_TELEMETRY_OPTOUT 1 \
       --set DOTNET_CLI_TELEMETRY_OPTOUT 1
 
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --replace-needed liblttng-ust${ext}.0 liblttng-ust${ext}.1 $out/share/powershell/libcoreclrtraceptprovider.so
 
   '' + ''
diff --git a/pkgs/shells/rush/default.nix b/pkgs/shells/rush/default.nix
index 6e7e256561b6..7b606178973e 100644
--- a/pkgs/shells/rush/default.nix
+++ b/pkgs/shells/rush/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Restricted User Shell";
 
     longDescription =
diff --git a/pkgs/shells/yash/default.nix b/pkgs/shells/yash/default.nix
index a88049ca0147..3e57b7b9a0fb 100644
--- a/pkgs/shells/yash/default.nix
+++ b/pkgs/shells/yash/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   strictDeps = true;
   nativeBuildInputs = [ asciidoc gettext ];
-  buildInputs = [ ncurses ] ++ lib.optionals stdenv.isDarwin [ gettext ];
+  buildInputs = [ ncurses ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ gettext ];
 
   meta = with lib; {
     homepage = "https://yash.osdn.jp/index.html.en";
diff --git a/pkgs/shells/zsh/antibody/default.nix b/pkgs/shells/zsh/antibody/default.nix
index fe32821dd611..7c1f0eb56cbd 100644
--- a/pkgs/shells/zsh/antibody/default.nix
+++ b/pkgs/shells/zsh/antibody/default.nix
@@ -30,6 +30,6 @@ buildGoModule rec {
     #
     # but this package is no longer maintained.
     #
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/shells/zsh/default.nix b/pkgs/shells/zsh/default.nix
index ac8d3aa9a736..0955c9c47fa0 100644
--- a/pkgs/shells/zsh/default.nix
+++ b/pkgs/shells/zsh/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation {
 
   strictDeps = true;
   nativeBuildInputs = [ autoreconfHook perl groff texinfo pkg-config ]
-                      ++ lib.optionals stdenv.isLinux [ util-linux yodl ];
+                      ++ lib.optionals stdenv.hostPlatform.isLinux [ util-linux yodl ];
 
   buildInputs = [ ncurses pcre ];
 
diff --git a/pkgs/shells/zsh/grml-zsh-config/default.nix b/pkgs/shells/zsh/grml-zsh-config/default.nix
index 00349696bd3f..d7b745c63c5f 100644
--- a/pkgs/shells/zsh/grml-zsh-config/default.nix
+++ b/pkgs/shells/zsh/grml-zsh-config/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   strictDeps = true;
   nativeBuildInputs = [ txt2tags ];
   buildInputs = [ zsh coreutils procps ]
-    ++ lib.optional stdenv.isLinux inetutils;
+    ++ lib.optional stdenv.hostPlatform.isLinux inetutils;
 
   buildPhase = ''
     cd doc
diff --git a/pkgs/test/cc-wrapper/default.nix b/pkgs/test/cc-wrapper/default.nix
index 6a0b11a6cc97..3de359d15b4a 100644
--- a/pkgs/test/cc-wrapper/default.nix
+++ b/pkgs/test/cc-wrapper/default.nix
@@ -3,9 +3,9 @@
 let
   # Sanitizers are not supported on Darwin.
   # Sanitizer headers aren't available in older libc++ stdenvs due to a bug
-  sanitizersWorking = (stdenv.buildPlatform == stdenv.hostPlatform) && !stdenv.isDarwin && !stdenv.hostPlatform.isMusl && (
+  sanitizersWorking = (stdenv.buildPlatform == stdenv.hostPlatform) && !stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isMusl && (
     (stdenv.cc.isClang && lib.versionAtLeast (lib.getVersion stdenv.cc.name) "5.0.0")
-    || (stdenv.cc.isGNU && stdenv.isLinux)
+    || (stdenv.cc.isGNU && stdenv.hostPlatform.isLinux)
   );
   staticLibc = lib.optionalString (stdenv.hostPlatform.libc == "glibc") "-L ${glibc.static}/lib";
   emulator = stdenv.hostPlatform.emulator buildPackages;
@@ -57,7 +57,7 @@ in stdenv.mkDerivation {
       rm cxx-main{,-static,.o}
     ''}
 
-    ${lib.optionalString (stdenv.isDarwin && stdenv.cc.isClang) ''
+    ${lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.cc.isClang) ''
       echo "checking whether compiler can build with CoreFoundation.framework... " >&2
       mkdir -p foo/lib
       $CC -framework CoreFoundation -o core-foundation-check ${./core-foundation-main.c}
@@ -65,7 +65,7 @@ in stdenv.mkDerivation {
     ''}
 
 
-    ${lib.optionalString (!stdenv.isDarwin) ''
+    ${lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       echo "checking whether compiler builds valid static C binaries... " >&2
       $CC ${staticLibc} -static -o cc-static ${./cc-main.c}
       ${emulator} ./cc-static
@@ -106,7 +106,7 @@ in stdenv.mkDerivation {
     echo "checking whether compiler uses NIX_LDFLAGS... " >&2
     mkdir -p foo/lib
     $CC -shared \
-      ${lib.optionalString stdenv.isDarwin "-Wl,-install_name,@rpath/libfoo.dylib"} \
+      ${lib.optionalString stdenv.hostPlatform.isDarwin "-Wl,-install_name,@rpath/libfoo.dylib"} \
       -DVALUE=42 \
       -o foo/lib/libfoo${stdenv.hostPlatform.extensions.sharedLibrary} \
       ${./foo.c}
diff --git a/pkgs/test/default.nix b/pkgs/test/default.nix
index 0a9df68ecc95..adb112fd3668 100644
--- a/pkgs/test/default.nix
+++ b/pkgs/test/default.nix
@@ -167,7 +167,7 @@ with pkgs;
     makeBinaryWrapper = pkgs.makeBinaryWrapper.override {
       # Enable sanitizers in the tests only, to avoid the performance cost in regular usage.
       # The sanitizers cause errors on aarch64-darwin, see https://github.com/NixOS/nixpkgs/pull/150079#issuecomment-994132734
-      sanitizers = pkgs.lib.optionals (! (pkgs.stdenv.isDarwin && pkgs.stdenv.isAarch64))
+      sanitizers = pkgs.lib.optionals (! (pkgs.stdenv.hostPlatform.isDarwin && pkgs.stdenv.hostPlatform.isAarch64))
         [ "undefined" "address" ];
     };
   };
diff --git a/pkgs/test/make-binary-wrapper/default.nix b/pkgs/test/make-binary-wrapper/default.nix
index 0d699900cf6d..29e4272fd672 100644
--- a/pkgs/test/make-binary-wrapper/default.nix
+++ b/pkgs/test/make-binary-wrapper/default.nix
@@ -60,7 +60,7 @@ let
     "overlength-strings"
     "prefix"
     "suffix"
-  ] makeGoldenTest // lib.optionalAttrs (! stdenv.isDarwin) {
+  ] makeGoldenTest // lib.optionalAttrs (! stdenv.hostPlatform.isDarwin) {
     cross = pkgsCross.${if stdenv.buildPlatform.isAarch64 then "gnu64" else "aarch64-multiplatform"}.callPackage ./cross.nix { };
   };
 in
diff --git a/pkgs/test/release/default.nix b/pkgs/test/release/default.nix
index 19ff08b6f9a1..2fdc6d0dc38c 100644
--- a/pkgs/test/release/default.nix
+++ b/pkgs/test/release/default.nix
@@ -13,7 +13,7 @@ pkgs.runCommand "all-attrs-eval-under-tryEval" {
   nativeBuildInputs = [
     nix
     pkgs.gitMinimal
-  ] ++ lib.optional pkgs.stdenv.isLinux pkgs.inotify-tools;
+  ] ++ lib.optional pkgs.stdenv.hostPlatform.isLinux pkgs.inotify-tools;
   strictDeps = true;
 
   src = with lib.fileset; toSource {
diff --git a/pkgs/test/stdenv-inputs/default.nix b/pkgs/test/stdenv-inputs/default.nix
index 6a2e441d0191..deb97b822423 100644
--- a/pkgs/test/stdenv-inputs/default.nix
+++ b/pkgs/test/stdenv-inputs/default.nix
@@ -12,7 +12,7 @@ let
       chmod +x $out/bin/foo
       cp ${./foo.c} $out/include/foo.h
       $CC -shared \
-        ${lib.optionalString stdenv.isDarwin "-Wl,-install_name,$out/lib/libfoo.dylib"} \
+        ${lib.optionalString stdenv.hostPlatform.isDarwin "-Wl,-install_name,$out/lib/libfoo.dylib"} \
         -o $out/lib/libfoo${stdenv.hostPlatform.extensions.sharedLibrary} \
         ${./foo.c}
     '';
@@ -30,7 +30,7 @@ let
       chmod +x $out/bin/bar
       cp ${./bar.c} $dev/include/bar.h
       $CC -shared \
-        ${lib.optionalString stdenv.isDarwin "-Wl,-install_name,$dev/lib/libbar.dylib"} \
+        ${lib.optionalString stdenv.hostPlatform.isDarwin "-Wl,-install_name,$dev/lib/libbar.dylib"} \
         -o $dev/lib/libbar${stdenv.hostPlatform.extensions.sharedLibrary} \
         ${./bar.c}
     '';
diff --git a/pkgs/test/stdenv/default.nix b/pkgs/test/stdenv/default.nix
index 6ed430f5da3f..a916e9b65a34 100644
--- a/pkgs/test/stdenv/default.nix
+++ b/pkgs/test/stdenv/default.nix
@@ -168,7 +168,7 @@ in
 
 {
   # Disable on Darwin due to assumptions with __bootPackages
-  __attrsFailEvaluation = stdenv.isDarwin;
+  __attrsFailEvaluation = stdenv.hostPlatform.isDarwin;
 
   # tests for hooks in `stdenv.defaultNativeBuildInputs`
   hooks = lib.recurseIntoAttrs (import ./hooks.nix { stdenv = bootStdenv; pkgs = earlyPkgs; inherit lib; });
diff --git a/pkgs/test/texlive/default.nix b/pkgs/test/texlive/default.nix
index c142623233ac..f9e0bc51e3d4 100644
--- a/pkgs/test/texlive/default.nix
+++ b/pkgs/test/texlive/default.nix
@@ -375,7 +375,7 @@ rec {
 
         # 'Error initialising QuantumRenderer: no suitable pipeline found'
         "tlcockpit"
-      ] ++ lib.optional stdenv.isDarwin "epspdftk";  # wish shebang is a script, not a binary!
+      ] ++ lib.optional stdenv.hostPlatform.isDarwin "epspdftk";  # wish shebang is a script, not a binary!
 
       # (1) binaries requiring -v
       shortVersion = [ "devnag" "diadia" "pmxchords" "ptex2pdf" "simpdftex" "ttf2afm" ];
diff --git a/pkgs/tools/X11/inputplug/default.nix b/pkgs/tools/X11/inputplug/default.nix
index 5d756844e375..c14ff710d4a7 100644
--- a/pkgs/tools/X11/inputplug/default.nix
+++ b/pkgs/tools/X11/inputplug/default.nix
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage rec {
     license = licenses.mit;
     platforms = platforms.unix;
     # `daemon(3)` is deprecated on macOS and `pidfile-rs` needs updating
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ jecaro ];
     mainProgram = "inputplug";
   };
diff --git a/pkgs/tools/X11/xidlehook/default.nix b/pkgs/tools/X11/xidlehook/default.nix
index 80407564a2aa..6c7aa89e01d3 100644
--- a/pkgs/tools/X11/xidlehook/default.nix
+++ b/pkgs/tools/X11/xidlehook/default.nix
@@ -26,13 +26,13 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-uroO0PgnCkFRNYAZgdTZWgDDbBqq1ZM+dni/A2Qw9fg=";
 
-  buildInputs = [ xorg.libX11 xorg.libXScrnSaver libpulseaudio ] ++ lib.optional stdenv.isDarwin Security;
+  buildInputs = [ xorg.libX11 xorg.libXScrnSaver libpulseaudio ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
   nativeBuildInputs = [ pkg-config patchelf python3 ];
 
-  buildNoDefaultFeatures = !stdenv.isLinux;
-  buildFeatures = lib.optional (!stdenv.isLinux) "pulse";
+  buildNoDefaultFeatures = !stdenv.hostPlatform.isLinux;
+  buildFeatures = lib.optional (!stdenv.hostPlatform.isLinux) "pulse";
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     RPATH="$(patchelf --print-rpath $out/bin/xidlehook)"
     patchelf --set-rpath "$RPATH:${libpulseaudio}/lib" $out/bin/xidlehook
   '';
diff --git a/pkgs/tools/X11/xpra/default.nix b/pkgs/tools/X11/xpra/default.nix
index 625dde8f825c..fe3f4ba0f4fb 100644
--- a/pkgs/tools/X11/xpra/default.nix
+++ b/pkgs/tools/X11/xpra/default.nix
@@ -88,7 +88,7 @@ in buildPythonApplication rec {
     ./fix-122159.patch # https://github.com/NixOS/nixpkgs/issues/122159
   ];
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace xpra/platform/posix/features.py \
       --replace-fail "/usr/bin/xdg-open" "${xdg-utils}/bin/xdg-open"
   '';
diff --git a/pkgs/tools/admin/acme-sh/default.nix b/pkgs/tools/admin/acme-sh/default.nix
index e7fbb962c831..b0e0d79d27b7 100644
--- a/pkgs/tools/admin/acme-sh/default.nix
+++ b/pkgs/tools/admin/acme-sh/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
       gnused
       openssl
       socat
-      (if stdenv.isLinux then iproute2 else unixtools.netstat)
+      (if stdenv.hostPlatform.isLinux then iproute2 else unixtools.netstat)
     ];
   in
     ''
diff --git a/pkgs/tools/admin/balena-cli/default.nix b/pkgs/tools/admin/balena-cli/default.nix
index 936cfaec1e98..ed945be9fc7f 100644
--- a/pkgs/tools/admin/balena-cli/default.nix
+++ b/pkgs/tools/admin/balena-cli/default.nix
@@ -15,7 +15,7 @@
 let
   # Fix for: https://github.com/NixOS/nixpkgs/issues/272156
   buildNpmPackage' = buildNpmPackage.override {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 in buildNpmPackage' rec {
   pname = "balena-cli";
@@ -38,13 +38,13 @@ in buildNpmPackage' rec {
   nativeBuildInputs = [
     node-gyp
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     udev
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
     darwin.apple_sdk.frameworks.Cocoa
   ];
diff --git a/pkgs/tools/admin/coldsnap/default.nix b/pkgs/tools/admin/coldsnap/default.nix
index b2825ce7d5a8..23360dc7f726 100644
--- a/pkgs/tools/admin/coldsnap/default.nix
+++ b/pkgs/tools/admin/coldsnap/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
   };
   cargoHash = "sha256-ngkoxybl52zTH4wo+sIUtU8vtzOAp+jU1RyTO2KbCgU=";
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
   nativeBuildInputs = [ pkg-config ];
 
   meta = with lib; {
diff --git a/pkgs/tools/admin/docker-credential-helpers/default.nix b/pkgs/tools/admin/docker-credential-helpers/default.nix
index f9e90afb272a..54de6d17e36e 100644
--- a/pkgs/tools/admin/docker-credential-helpers/default.nix
+++ b/pkgs/tools/admin/docker-credential-helpers/default.nix
@@ -13,9 +13,9 @@ buildGoModule rec {
 
   vendorHash = null;
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ libsecret ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libsecret ];
 
   ldflags = [
     "-s"
@@ -25,7 +25,7 @@ buildGoModule rec {
 
   buildPhase =
     let
-      cmds = if stdenv.isDarwin then [ "osxkeychain" "pass" ] else [ "secretservice" "pass" ];
+      cmds = if stdenv.hostPlatform.isDarwin then [ "osxkeychain" "pass" ] else [ "secretservice" "pass" ];
     in
     ''
       for cmd in ${builtins.toString cmds}; do
@@ -47,7 +47,7 @@ buildGoModule rec {
     homepage = "https://github.com/docker/docker-credential-helpers";
     license = licenses.mit;
     maintainers = [ ];
-  } // lib.optionalAttrs stdenv.isDarwin {
+  } // lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     mainProgram = "docker-credential-osxkeychain";
   };
 }
diff --git a/pkgs/tools/admin/google-cloud-sdk/components.nix b/pkgs/tools/admin/google-cloud-sdk/components.nix
index f63b5049e201..c337112762b6 100644
--- a/pkgs/tools/admin/google-cloud-sdk/components.nix
+++ b/pkgs/tools/admin/google-cloud-sdk/components.nix
@@ -164,7 +164,7 @@ let
       nativeBuildInputs = [
         python3
         stdenv.cc.cc
-      ] ++ lib.optionals stdenv.isLinux [
+      ] ++ lib.optionals stdenv.hostPlatform.isLinux [
         autoPatchelfHook
       ];
       buildInputs = [
diff --git a/pkgs/tools/admin/gtk-vnc/default.nix b/pkgs/tools/admin/gtk-vnc/default.nix
index 704bdf84e07c..6ffed3604c64 100644
--- a/pkgs/tools/admin/gtk-vnc/default.nix
+++ b/pkgs/tools/admin/gtk-vnc/default.nix
@@ -9,7 +9,7 @@
 , glib
 , pkg-config
 , cyrus_sasl
-, pulseaudioSupport ? stdenv.isLinux
+, pulseaudioSupport ? stdenv.hostPlatform.isLinux
 , libpulseaudio
 , libgcrypt
 , gtk3
diff --git a/pkgs/tools/admin/netbox2netshot/default.nix b/pkgs/tools/admin/netbox2netshot/default.nix
index 82f2825bcdea..0b5e1ed73793 100644
--- a/pkgs/tools/admin/netbox2netshot/default.nix
+++ b/pkgs/tools/admin/netbox2netshot/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/tools/admin/pgadmin/default.nix b/pkgs/tools/admin/pgadmin/default.nix
index 4325040dd683..37725ad4b9d0 100644
--- a/pkgs/tools/admin/pgadmin/default.nix
+++ b/pkgs/tools/admin/pgadmin/default.nix
@@ -39,7 +39,7 @@ let
   # skip tests on macOS which fail due to an error in keyring, see https://github.com/NixOS/nixpkgs/issues/281214
   skippedTests = builtins.concatStringsSep "," (
     [ "browser.tests.test_kerberos_with_mocking" ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "browser.server_groups.servers.tests.test_all_server_get"
       "browser.server_groups.servers.tests.test_check_connect"
       "browser.server_groups.servers.tests.test_check_ssh_mock_connect"
diff --git a/pkgs/tools/admin/procs/default.nix b/pkgs/tools/admin/procs/default.nix
index d4071186f988..4e574e407e2e 100644
--- a/pkgs/tools/admin/procs/default.nix
+++ b/pkgs/tools/admin/procs/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-EifER0wt2Nw7WrlVwc49tZHH/av4OkzTPYSzl9mVJI8=";
 
   nativeBuildInputs = [ installShellFiles ]
-    ++ lib.optionals stdenv.isDarwin [ rustPlatform.bindgenHook ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ rustPlatform.bindgenHook ];
 
   postInstall = ''
     for shell in bash fish zsh; do
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
     installShellCompletion procs.{bash,fish} --zsh _procs
   '';
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security libiconv Libsystem ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security libiconv Libsystem ];
 
   meta = with lib; {
     description = "Modern replacement for ps written in Rust";
diff --git a/pkgs/tools/admin/pulumi-bin/default.nix b/pkgs/tools/admin/pulumi-bin/default.nix
index 25351db6fd3f..ec61e5aef2d0 100644
--- a/pkgs/tools/admin/pulumi-bin/default.nix
+++ b/pkgs/tools/admin/pulumi-bin/default.nix
@@ -14,7 +14,7 @@ in stdenv.mkDerivation {
 
   installPhase = ''
     install -D -t $out/bin/ *
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/pulumi --set LD_LIBRARY_PATH "${stdenv.cc.cc.lib}/lib"
   '' + ''
     installShellCompletion --cmd pulumi \
@@ -23,7 +23,7 @@ in stdenv.mkDerivation {
       --zsh  <($out/bin/pulumi completion zsh)
   '';
 
-  nativeBuildInputs = [ installShellFiles ] ++ lib.optionals stdenv.isLinux [ autoPatchelfHook makeWrapper ];
+  nativeBuildInputs = [ installShellFiles ] ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook makeWrapper ];
   buildInputs = [ stdenv.cc.cc.libgcc or null ];
 
   meta = with lib; {
diff --git a/pkgs/tools/admin/pulumi/default.nix b/pkgs/tools/admin/pulumi/default.nix
index 9d715ea7edf9..e79000e70217 100644
--- a/pkgs/tools/admin/pulumi/default.nix
+++ b/pkgs/tools/admin/pulumi/default.nix
@@ -74,7 +74,7 @@ buildGoModule rec {
     rm codegen/{docs,dotnet,go,nodejs,python,schema}/*_test.go
     rm -R codegen/{dotnet,go,nodejs,python}/gen_program_test
 
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     export PULUMI_HOME=$(mktemp -d)
   '';
 
diff --git a/pkgs/tools/admin/tigervnc/default.nix b/pkgs/tools/admin/tigervnc/default.nix
index e1a10334f45b..c54ce8bfe142 100644
--- a/pkgs/tools/admin/tigervnc/default.nix
+++ b/pkgs/tools/admin/tigervnc/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-TgVV/4MRsQHYKpDf9L5eHMLVpdwvNy1KPDIe7xMlQ9o=";
   };
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     sed -i -e '/^\$cmd \.= " -pn";/a$cmd .= " -xkbdir ${xkeyboard_config}/etc/X11/xkb";' unix/vncserver/vncserver.in
     fontPath=
     substituteInPlace vncviewer/vncviewer.cxx \
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
     "-Wno-error=array-bounds"
   ];
 
-  postBuild = lib.optionalString stdenv.isLinux ''
+  postBuild = lib.optionalString stdenv.hostPlatform.isLinux ''
     export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -Wno-error=int-to-pointer-cast -Wno-error=pointer-to-int-cast"
     export CXXFLAGS="$CXXFLAGS -fpermissive"
     # Build Xvnc
@@ -84,11 +84,11 @@ stdenv.mkDerivation rec {
         --with-xkb-output=$out/share/X11/xkb/compiled
     make TIGERVNC_SRC=$src TIGERVNC_BUILDDIR=`pwd`/../.. -j$NIX_BUILD_CORES
     popd
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     make dmg
   '';
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     pushd unix/xserver/hw/vnc
     make TIGERVNC_SRC=$src TIGERVNC_BUILDDIR=`pwd`/../../../.. install
     popd
@@ -96,7 +96,7 @@ stdenv.mkDerivation rec {
 
     wrapProgram $out/bin/vncserver \
       --prefix PATH : ${lib.makeBinPath (with xorg; [ xterm twm xsetroot xauth ]) }
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv 'TigerVNC Viewer ${version}.app' $out/Applications/
     rm $out/bin/vncviewer
@@ -111,7 +111,7 @@ stdenv.mkDerivation rec {
     libjpeg_turbo
     pixman
     gawk
-  ] ++ lib.optionals stdenv.isLinux (with xorg; [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux (with xorg; [
     nettle
     pam
     perl
@@ -137,7 +137,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     cmake
     gettext
-  ] ++ lib.optionals stdenv.isLinux (with xorg; [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux (with xorg; [
     fontutil
     libtool
     makeWrapper
@@ -145,7 +145,7 @@ stdenv.mkDerivation rec {
     zlib
   ] ++ xorg.xorgserver.nativeBuildInputs);
 
-  propagatedBuildInputs = lib.optional stdenv.isLinux xorg.xorgserver.propagatedBuildInputs;
+  propagatedBuildInputs = lib.optional stdenv.hostPlatform.isLinux xorg.xorgserver.propagatedBuildInputs;
 
   passthru.tests.tigervnc = nixosTests.tigervnc;
 
diff --git a/pkgs/tools/admin/trinsic-cli/default.nix b/pkgs/tools/admin/trinsic-cli/default.nix
index 547d3020620a..afa431ecd76f 100644
--- a/pkgs/tools/admin/trinsic-cli/default.nix
+++ b/pkgs/tools/admin/trinsic-cli/default.nix
@@ -12,7 +12,7 @@ rustPlatform.buildRustPackage rec {
   cargoVendorDir = "vendor";
   doCheck = false;
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "Trinsic CLI";
diff --git a/pkgs/tools/admin/uacme/default.nix b/pkgs/tools/admin/uacme/default.nix
index 6bf1d55e4375..659ca720856b 100644
--- a/pkgs/tools/admin/uacme/default.nix
+++ b/pkgs/tools/admin/uacme/default.nix
@@ -39,6 +39,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ malte-v ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/archivers/7zz/default.nix b/pkgs/tools/archivers/7zz/default.nix
index 74746fa5f1f3..8a0b1365ee2d 100644
--- a/pkgs/tools/archivers/7zz/default.nix
+++ b/pkgs/tools/archivers/7zz/default.nix
@@ -4,7 +4,7 @@
 
   # Only used for Linux's x86/x86_64
 , uasm
-, useUasm ? (stdenv.isLinux && stdenv.hostPlatform.isx86)
+, useUasm ? (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86)
 
   # RAR code is under non-free unRAR license
   # see the meta.license section below for more details
@@ -52,7 +52,7 @@ stdenv.mkDerivation (finalAttrs: {
       --replace windres.exe ${stdenv.cc.targetPrefix}windres
   '';
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-Wno-deprecated-copy-dtor"
   ] ++ lib.optionals stdenv.hostPlatform.isMinGW [
     "-Wno-conversion"
@@ -80,7 +80,7 @@ stdenv.mkDerivation (finalAttrs: {
     # We need at minimum 10.13 here because of utimensat, however since
     # we need a bump anyway, let's set the same minimum version as the one in
     # aarch64-darwin so we don't need additional changes for it
-    ++ lib.optionals stdenv.isDarwin [ "MACOSX_DEPLOYMENT_TARGET=10.16" ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "MACOSX_DEPLOYMENT_TARGET=10.16" ]
     # it's the compression code with the restriction, see DOC/License.txt
     ++ lib.optionals (!enableUnfree) [ "DISABLE_RAR_COMPRESS=true" ]
     ++ lib.optionals (stdenv.hostPlatform.isMinGW) [ "IS_MINGW=1" "MSYSTEM=1" ];
diff --git a/pkgs/tools/archivers/arc_unpacker/default.nix b/pkgs/tools/archivers/arc_unpacker/default.nix
index 057efacdbe76..24a1d01b64da 100644
--- a/pkgs/tools/archivers/arc_unpacker/default.nix
+++ b/pkgs/tools/archivers/arc_unpacker/default.nix
@@ -82,7 +82,7 @@ stdenv.mkDerivation {
   '';
 
   # A few tests fail on aarch64-linux
-  doCheck = !(stdenv.isLinux && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
 
   meta = with lib; {
     description = "Tool to extract files from visual novel archives";
@@ -93,6 +93,6 @@ stdenv.mkDerivation {
     mainProgram = "arc_unpacker";
 
     # unit test failures
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/tools/archivers/arj/default.nix b/pkgs/tools/archivers/arj/default.nix
index 6f365e226e20..5ec946788d92 100644
--- a/pkgs/tools/archivers/arj/default.nix
+++ b/pkgs/tools/archivers/arj/default.nix
@@ -128,7 +128,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace environ.c \
         --replace "  #include <sys/statfs.h>" "  #include <sys/mount.h>"
   '';
diff --git a/pkgs/tools/archivers/cpio/default.nix b/pkgs/tools/archivers/cpio/default.nix
index 04c0300944eb..ba178fb3eb7e 100644
--- a/pkgs/tools/archivers/cpio/default.nix
+++ b/pkgs/tools/archivers/cpio/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   separateDebugInfo = true;
 
-  preConfigure = lib.optionalString stdenv.isCygwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isCygwin ''
     sed -i gnu/fpending.h -e 's,include <stdio_ext.h>,,'
   '';
 
diff --git a/pkgs/tools/archivers/gbl/default.nix b/pkgs/tools/archivers/gbl/default.nix
index f025a0c578c1..6bbc31a6b1c6 100644
--- a/pkgs/tools/archivers/gbl/default.nix
+++ b/pkgs/tools/archivers/gbl/default.nix
@@ -38,7 +38,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-CeGLSseKUe2XudRqZm5Y7o7ZLDtDBg/MFunOGqxFZGM=";
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   passthru.tests.version =
     testers.testVersion { package = gbl; };
diff --git a/pkgs/tools/archivers/gnutar/default.nix b/pkgs/tools/archivers/gnutar/default.nix
index 723c6b75ca9f..f9b5415b4f8e 100644
--- a/pkgs/tools/archivers/gnutar/default.nix
+++ b/pkgs/tools/archivers/gnutar/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   };
 
   # avoid retaining reference to CF during stdenv bootstrap
-  configureFlags = lib.optionals stdenv.isDarwin [
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "gt_cv_func_CFPreferencesCopyAppValue=no"
     "gt_cv_func_CFLocaleCopyCurrent=no"
     "gt_cv_func_CFLocaleCopyPreferredLanguages=no"
@@ -27,26 +27,26 @@ stdenv.mkDerivation rec {
   # gnutar tries to call into gettext between `fork` and `exec`,
   # which is not safe on darwin.
   # see http://article.gmane.org/gmane.os.macosx.fink.devel/21882
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/system.c --replace '_(' 'N_('
   '';
 
   outputs = [ "out" "info" ];
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin autoreconfHook
-    ++ lib.optional (!stdenv.isDarwin) updateAutotoolsGnuConfigScriptsHook;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin autoreconfHook
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) updateAutotoolsGnuConfigScriptsHook;
   # Add libintl on Darwin specifically as it fails to link (or skip)
   # NLS on it's own:
   #  "_libintl_textdomain", referenced from:
   #    _main in tar.o
   #  ld: symbol(s) not found for architecture x86_64
-  buildInputs = lib.optional aclSupport acl ++ lib.optional stdenv.isDarwin libintl;
+  buildInputs = lib.optional aclSupport acl ++ lib.optional stdenv.hostPlatform.isDarwin libintl;
 
   # May have some issues with root compilation because the bootstrap tool
   # cannot be used as a login shell for now.
-  FORCE_UNSAFE_CONFIGURE = lib.optionalString (stdenv.hostPlatform.system == "armv7l-linux" || stdenv.isSunOS) "1";
+  FORCE_UNSAFE_CONFIGURE = lib.optionalString (stdenv.hostPlatform.system == "armv7l-linux" || stdenv.hostPlatform.isSunOS) "1";
 
-  preConfigure = if stdenv.isCygwin then ''
+  preConfigure = if stdenv.hostPlatform.isCygwin then ''
     sed -i gnu/fpending.h -e 's,include <stdio_ext.h>,,'
   '' else null;
 
diff --git a/pkgs/tools/archivers/innoextract/default.nix b/pkgs/tools/archivers/innoextract/default.nix
index 1219c48ab7d2..e2e3ddcdc3e7 100644
--- a/pkgs/tools/archivers/innoextract/default.nix
+++ b/pkgs/tools/archivers/innoextract/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [ xz boost ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   # Python is reported as missing during the build, however
   # including Python does not change the output.
diff --git a/pkgs/tools/archivers/p7zip/default.nix b/pkgs/tools/archivers/p7zip/default.nix
index 3ced84bed025..e77904e120d6 100644
--- a/pkgs/tools/archivers/p7zip/default.nix
+++ b/pkgs/tools/archivers/p7zip/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   preConfigure = ''
     buildFlags=all3
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     cp makefile.macosx_llvm_64bits makefile.machine
   '';
 
diff --git a/pkgs/tools/archivers/pax/default.nix b/pkgs/tools/archivers/pax/default.nix
index feacf73fe87b..42668a4d1d68 100644
--- a/pkgs/tools/archivers/pax/default.nix
+++ b/pkgs/tools/archivers/pax/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "1p18nxijh323f4i1s2pg7pcr0557xljl5avv8ll5s9nfr34r5j0w";
   };
 
-  buildInputs = lib.optional stdenv.isDarwin utmp
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin utmp
     ++ lib.optional stdenv.hostPlatform.isMusl musl-fts;
 
   NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isMusl "-lfts";
diff --git a/pkgs/tools/archivers/rar/default.nix b/pkgs/tools/archivers/rar/default.nix
index cd78e11e80bb..fe378514adea 100644
--- a/pkgs/tools/archivers/rar/default.nix
+++ b/pkgs/tools/archivers/rar/default.nix
@@ -41,10 +41,10 @@ stdenv.mkDerivation {
 
   dontBuild = true;
 
-  buildInputs = lib.optionals stdenv.isLinux [ stdenv.cc.cc.lib ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ stdenv.cc.cc.lib ];
 
   nativeBuildInputs = [ installShellFiles ]
-    ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/tools/archivers/unar/default.nix b/pkgs/tools/archivers/unar/default.nix
index 44a5d4d1192d..96090b88f6b2 100644
--- a/pkgs/tools/archivers/unar/default.nix
+++ b/pkgs/tools/archivers/unar/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   };
 
   postPatch =
-    if stdenv.isDarwin then ''
+    if stdenv.hostPlatform.isDarwin then ''
       substituteInPlace "./XADMaster.xcodeproj/project.pbxproj" \
         --replace "libstdc++.6.dylib" "libc++.1.dylib"
     '' else ''
@@ -43,21 +43,21 @@ stdenv.mkDerivation rec {
     '';
 
   buildInputs = [ bzip2 icu openssl wavpack zlib ] ++
-    lib.optionals stdenv.isLinux [ gnustep.base ] ++
-    lib.optionals stdenv.isDarwin [ Foundation AppKit ];
+    lib.optionals stdenv.hostPlatform.isLinux [ gnustep.base ] ++
+    lib.optionals stdenv.hostPlatform.isDarwin [ Foundation AppKit ];
 
   nativeBuildInputs = [ installShellFiles ] ++
-    lib.optionals stdenv.isLinux [ gnustep.make ] ++
-    lib.optionals stdenv.isDarwin [ xcbuildHook ];
+    lib.optionals stdenv.hostPlatform.isLinux [ gnustep.make ] ++
+    lib.optionals stdenv.hostPlatform.isDarwin [ xcbuildHook ];
 
-  xcbuildFlags = lib.optionals stdenv.isDarwin [
+  xcbuildFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "-target unar"
     "-target lsar"
     "-configuration Release"
     "MACOSX_DEPLOYMENT_TARGET=${stdenv.hostPlatform.darwinMinVersion}"
   ];
 
-  makefile = lib.optionalString (!stdenv.isDarwin) "Makefile.linux";
+  makefile = lib.optionalString (!stdenv.hostPlatform.isDarwin) "Makefile.linux";
 
   enableParallelBuilding = true;
 
@@ -68,7 +68,7 @@ stdenv.mkDerivation rec {
   installPhase = ''
     runHook preInstall
 
-    install -Dm555 -t $out/bin ${lib.optionalString stdenv.isDarwin "Products/Release/"}{lsar,unar}
+    install -Dm555 -t $out/bin ${lib.optionalString stdenv.hostPlatform.isDarwin "Products/Release/"}{lsar,unar}
     for f in lsar unar; do
       installManPage ./Extra/$f.?
       installShellCompletion --bash --name $f ./Extra/$f.bash_completion
diff --git a/pkgs/tools/archivers/unzip/default.nix b/pkgs/tools/archivers/unzip/default.nix
index ae9a129c766f..2b353598a328 100644
--- a/pkgs/tools/archivers/unzip/default.nix
+++ b/pkgs/tools/archivers/unzip/default.nix
@@ -85,7 +85,7 @@ stdenv.mkDerivation rec {
   ]
   # `lchmod` is not available on Linux, so we remove it to fix "not supported" errors (when the zip file contains symlinks).
   # Alpine (musl) and Debian (glibc) also add this flag.
-  ++ lib.optionals stdenv.isLinux [ "LOCAL_UNZIP=-DNO_LCHMOD" ];
+  ++ lib.optionals stdenv.hostPlatform.isLinux [ "LOCAL_UNZIP=-DNO_LCHMOD" ];
 
   preConfigure = ''
     sed -i -e 's@CF="-O3 -Wall -I. -DASM_CRC $(LOC)"@CF="-O3 -Wall -I. -DASM_CRC -DLARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 $(LOC)"@' unix/Makefile
diff --git a/pkgs/tools/archivers/wimlib/default.nix b/pkgs/tools/archivers/wimlib/default.nix
index 6aa2c95fa140..18013b39015e 100644
--- a/pkgs/tools/archivers/wimlib/default.nix
+++ b/pkgs/tools/archivers/wimlib/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   pname = "wimlib";
 
   nativeBuildInputs = [ pkg-config makeWrapper ];
-  buildInputs = [ ntfs3g ] ++ lib.optionals (!stdenv.isDarwin) [ fuse3 ];
+  buildInputs = [ ntfs3g ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ fuse3 ];
 
   src = fetchurl {
     url = "https://wimlib.net/downloads/${pname}-${version}.tar.gz";
@@ -22,20 +22,20 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  preBuild = lib.optionalString (!stdenv.isDarwin) ''
+  preBuild = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     substituteInPlace programs/mkwinpeimg.in \
       --replace '/usr/lib/syslinux' "${syslinux}/share/syslinux"
   '';
 
   postInstall = let
-    path = lib.makeBinPath  ([ cabextract mtools ntfs3g ] ++ lib.optionals (!stdenv.isDarwin) [ cdrkit syslinux fuse3 ]);
+    path = lib.makeBinPath  ([ cabextract mtools ntfs3g ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ cdrkit syslinux fuse3 ]);
   in ''
     for prog in $out/bin/*; do
       wrapProgram $prog --prefix PATH : $out/bin:${path}
     done
   '';
 
-  doCheck = (!stdenv.isDarwin);
+  doCheck = (!stdenv.hostPlatform.isDarwin);
 
   preCheck = ''
     patchShebangs tests
diff --git a/pkgs/tools/archivers/xarchiver/default.nix b/pkgs/tools/archivers/xarchiver/default.nix
index c41a6010ef6f..a1604f707846 100644
--- a/pkgs/tools/archivers/xarchiver/default.nix
+++ b/pkgs/tools/archivers/xarchiver/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "GTK frontend to 7z,zip,rar,tar,bzip2, gzip,arj, lha, rpm and deb (open and extract only)";
     homepage = "https://github.com/ib/xarchiver";
     maintainers = [ lib.maintainers.domenkozar ];
diff --git a/pkgs/tools/archivers/zip/default.nix b/pkgs/tools/archivers/zip/default.nix
index a192b3878504..2c225489a346 100644
--- a/pkgs/tools/archivers/zip/default.nix
+++ b/pkgs/tools/archivers/zip/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   hardeningDisable = [ "format" ];
 
   makefile = "unix/Makefile";
-  buildFlags = if stdenv.isCygwin then [ "cygwin" ] else [ "generic" ];
+  buildFlags = if stdenv.hostPlatform.isCygwin then [ "cygwin" ] else [ "generic" ];
   installFlags = [
     "prefix=${placeholder "out"}"
     "INSTALL=cp"
@@ -38,10 +38,10 @@ stdenv.mkDerivation rec {
     ./buffer-overflow-on-utf8-rh-bug-2165653.patch
     # Fixes forward declaration errors with timezone.c
     ./fix-time.h-not-included.patch
-  ] ++ lib.optionals (enableNLS && !stdenv.isCygwin) [ ./natspec-gentoo.patch.bz2 ];
+  ] ++ lib.optionals (enableNLS && !stdenv.hostPlatform.isCygwin) [ ./natspec-gentoo.patch.bz2 ];
 
   buildInputs = lib.optional enableNLS libnatspec
-    ++ lib.optional stdenv.isCygwin libiconv;
+    ++ lib.optional stdenv.hostPlatform.isCygwin libiconv;
 
   meta = with lib; {
     description = "Compressor/archiver for creating and modifying zipfiles";
diff --git a/pkgs/tools/archivers/zpaq/default.nix b/pkgs/tools/archivers/zpaq/default.nix
index 6a03b825e902..791c4fd14f3a 100644
--- a/pkgs/tools/archivers/zpaq/default.nix
+++ b/pkgs/tools/archivers/zpaq/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ perl /* for pod2man */ ];
 
   CPPFLAGS = [ "-Dunix" ] ++
-    lib.optional (!stdenv.isi686 && !stdenv.isx86_64) "-DNOJIT";
+    lib.optional (!stdenv.hostPlatform.isi686 && !stdenv.hostPlatform.isx86_64) "-DNOJIT";
   CXXFLAGS = [ "-O3" "-DNDEBUG" ];
 
   enableParallelBuilding = true;
diff --git a/pkgs/tools/audio/dl-librescore/default.nix b/pkgs/tools/audio/dl-librescore/default.nix
index 78a2b80a0cc7..147ef1094ef2 100644
--- a/pkgs/tools/audio/dl-librescore/default.nix
+++ b/pkgs/tools/audio/dl-librescore/default.nix
@@ -30,7 +30,7 @@ buildNpmPackage rec {
 
   nativeBuildInputs = [
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
   ];
 
diff --git a/pkgs/tools/audio/kaldi/default.nix b/pkgs/tools/audio/kaldi/default.nix
index 5b7242364834..b1daf3aa13e6 100644
--- a/pkgs/tools/audio/kaldi/default.nix
+++ b/pkgs/tools/audio/kaldi/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     openblas
     icu
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Accelerate
   ];
 
diff --git a/pkgs/tools/audio/mpd-discord-rpc/default.nix b/pkgs/tools/audio/mpd-discord-rpc/default.nix
index 1da562085158..1dada2fcfc3f 100644
--- a/pkgs/tools/audio/mpd-discord-rpc/default.nix
+++ b/pkgs/tools/audio/mpd-discord-rpc/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/tools/audio/mpdcron/default.nix b/pkgs/tools/audio/mpdcron/default.nix
index c2e93d592f4c..3ced3d5d1382 100644
--- a/pkgs/tools/audio/mpdcron/default.nix
+++ b/pkgs/tools/audio/mpdcron/default.nix
@@ -56,7 +56,7 @@ in stdenv.mkDerivation {
     license     = licenses.gpl2Plus;
     platforms   = platforms.unix;
     maintainers = with maintainers; [ lovek323 manveru ];
-    broken      = stdenv.isDarwin; # fails due to old nokogiri https://github.com/sparklemotion/nokogiri/discussions/3152#discussioncomment-8806607
+    broken      = stdenv.hostPlatform.isDarwin; # fails due to old nokogiri https://github.com/sparklemotion/nokogiri/discussions/3152#discussioncomment-8806607
   };
 }
 # TODO: autoreconfHook this
diff --git a/pkgs/tools/audio/mpris-scrobbler/default.nix b/pkgs/tools/audio/mpris-scrobbler/default.nix
index 859cc9dd6df9..4628ad4910d1 100644
--- a/pkgs/tools/audio/mpris-scrobbler/default.nix
+++ b/pkgs/tools/audio/mpris-scrobbler/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   postPatch = ''
     substituteInPlace src/signon.c \
       --replace "/usr/bin/xdg-open" "${xdg-utils}/bin/xdg-open"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace meson.build \
       --replace "-Werror=format-truncation=0" "" \
       --replace "-Wno-stringop-overflow" ""
@@ -56,10 +56,10 @@ stdenv.mkDerivation rec {
   env.NIX_CFLAGS_COMPILE = toString ([
     # Needed with GCC 12
     "-Wno-error=address"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-Wno-sometimes-uninitialized"
     "-Wno-tautological-pointer-compare"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-Wno-array-bounds"
     "-Wno-free-nonheap-object"
     "-Wno-stringop-truncation"
diff --git a/pkgs/tools/audio/openai-whisper-cpp/default.nix b/pkgs/tools/audio/openai-whisper-cpp/default.nix
index c74919dbcb0e..931bcb32743b 100644
--- a/pkgs/tools/audio/openai-whisper-cpp/default.nix
+++ b/pkgs/tools/audio/openai-whisper-cpp/default.nix
@@ -50,7 +50,7 @@ effectiveStdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [
       SDL2
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       Accelerate
       CoreGraphics
       CoreML
@@ -70,7 +70,7 @@ effectiveStdenv.mkDerivation (finalAttrs: {
       --replace '${cudaOldStr}' '${cudaNewStr}'
   '';
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     WHISPER_COREML = "1";
     WHISPER_COREML_ALLOW_FALLBACK = "1";
     WHISPER_METAL_EMBED_LIBRARY = "1";
diff --git a/pkgs/tools/backup/awsbck/default.nix b/pkgs/tools/backup/awsbck/default.nix
index 8e00b8787c4a..756d7aa1261f 100644
--- a/pkgs/tools/backup/awsbck/default.nix
+++ b/pkgs/tools/backup/awsbck/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-dMXaIFc0e6PMYiQrokQoUc1xAVCccE92WzM2fl7tOBQ=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   # tests run in CI on the source repo
   doCheck = false;
diff --git a/pkgs/tools/backup/bacula/default.nix b/pkgs/tools/backup/bacula/default.nix
index 386775960a73..d21336813008 100644
--- a/pkgs/tools/backup/bacula/default.nix
+++ b/pkgs/tools/backup/bacula/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   # libtool.m4 only matches macOS 10.*
-  postPatch = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  postPatch = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     substituteInPlace configure \
       --replace "10.*)" "*)"
   '';
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
       IOKit
     ]
     # acl relies on attr, which I can't get to build on darwin
-    ++ lib.optional (!stdenv.isDarwin) acl;
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) acl;
 
   configureFlags = [
     "--with-sqlite3=${sqlite.dev}"
diff --git a/pkgs/tools/backup/borgbackup/default.nix b/pkgs/tools/backup/borgbackup/default.nix
index ab43dfbef0ce..e0c148108362 100644
--- a/pkgs/tools/backup/borgbackup/default.nix
+++ b/pkgs/tools/backup/borgbackup/default.nix
@@ -58,14 +58,14 @@ python.pkgs.buildPythonApplication rec {
     xxHash
     zstd
     openssl
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     acl
   ];
 
   dependencies = with python.pkgs; [
     msgpack
     packaging
-    (if stdenv.isLinux then pyfuse3 else llfuse)
+    (if stdenv.hostPlatform.isLinux then pyfuse3 else llfuse)
   ];
 
   makeWrapperArgs = [
diff --git a/pkgs/tools/backup/burp/default.nix b/pkgs/tools/backup/burp/default.nix
index 4684631efe9a..dad8fefced89 100644
--- a/pkgs/tools/backup/burp/default.nix
+++ b/pkgs/tools/backup/burp/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   # use openssl_legacy due to burp-2.4.0 not supporting file encryption with openssl 3.0
   # replace with 'openssl' once burp-3.x has been declared stable and this package upgraded
   buildInputs = [ librsync ncurses openssl_legacy zlib uthash ]
-    ++ lib.optional (!stdenv.isDarwin) acl;
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) acl;
 
   configureFlags = [ "--localstatedir=/var" ];
 
diff --git a/pkgs/tools/backup/dar/default.nix b/pkgs/tools/backup/dar/default.nix
index 56a5a9313911..d3424c4ac0c8 100644
--- a/pkgs/tools/backup/dar/default.nix
+++ b/pkgs/tools/backup/dar/default.nix
@@ -48,10 +48,10 @@ stdenv.mkDerivation rec {
     xz
     zlib
     zstd
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     attr
     e2fsprogs
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreFoundation
   ];
 
diff --git a/pkgs/tools/backup/duplicity/default.nix b/pkgs/tools/backup/duplicity/default.nix
index da32f2323343..9411c2e13ea7 100644
--- a/pkgs/tools/backup/duplicity/default.nix
+++ b/pkgs/tools/backup/duplicity/default.nix
@@ -39,7 +39,7 @@ let self = python3.pkgs.buildPythonApplication rec {
     # don't try to use gtar on darwin/bsd
     substituteInPlace testing/functional/test_restart.py \
       --replace-fail 'tarcmd = "gtar"' 'tarcmd = "tar"'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # tests try to access these files in the sandbox, but can't deal with EPERM
     substituteInPlace testing/unit/test_globmatch.py \
       --replace-fail /var/log /test/log
@@ -50,7 +50,7 @@ let self = python3.pkgs.buildPythonApplication rec {
       --replace-fail '"/tmp/' 'os.environ.get("TMPDIR")+"/'
   '';
 
-  disabledTests = lib.optionals stdenv.isDarwin [
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # uses /tmp/
     "testing/unit/test_cli_main.py::CommandlineTest::test_intermixed_args"
   ];
@@ -91,9 +91,9 @@ let self = python3.pkgs.buildPythonApplication rec {
     gnutar # Add 'tar' to PATH.
     librsync # Add 'rdiff' to PATH.
     par2cmdline # Add 'par2' to PATH.
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     util-linux # Add 'setsid' to PATH.
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     getconf
   ] ++ (with python3.pkgs; [
     lockfile
@@ -111,7 +111,7 @@ let self = python3.pkgs.buildPythonApplication rec {
       gnupg
       ncftp
       rsync
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       getconf
     ]); in ''
     makeWrapperArgsBak=("''${makeWrapperArgs[@]}")
diff --git a/pkgs/tools/backup/httrack/qt.nix b/pkgs/tools/backup/httrack/qt.nix
index 061c8b2ad6de..d178185229fd 100644
--- a/pkgs/tools/backup/httrack/qt.nix
+++ b/pkgs/tools/backup/httrack/qt.nix
@@ -29,7 +29,7 @@ mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Easy-to-use offline browser / website mirroring utility - QT frontend";
     mainProgram = "httraqt";
     homepage    = "http://www.httrack.com";
diff --git a/pkgs/tools/backup/monolith/default.nix b/pkgs/tools/backup/monolith/default.nix
index b95ada9574ed..307ca6251ca4 100644
--- a/pkgs/tools/backup/monolith/default.nix
+++ b/pkgs/tools/backup/monolith/default.nix
@@ -21,9 +21,9 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-FeD0+s79orFDUVsb205W0pdXgDI+p1UrH3GIfKwUqDQ=";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config ];
-  buildInputs = lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv Security SystemConfiguration ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security SystemConfiguration ];
 
   checkFlags = [ "--skip=tests::cli" ];
 
diff --git a/pkgs/tools/backup/rdedup/default.nix b/pkgs/tools/backup/rdedup/default.nix
index af62fede4071..fdda197f18c5 100644
--- a/pkgs/tools/backup/rdedup/default.nix
+++ b/pkgs/tools/backup/rdedup/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config rustPlatform.bindgenHook ];
   buildInputs = [ openssl libsodium xz ]
-    ++ (lib.optional stdenv.isDarwin Security);
+    ++ (lib.optional stdenv.hostPlatform.isDarwin Security);
 
   meta = with lib; {
     description = "Data deduplication with compression and public key encryption";
diff --git a/pkgs/tools/backup/tarsnap/default.nix b/pkgs/tools/backup/tarsnap/default.nix
index ad7fc761d843..83d205bb9b50 100644
--- a/pkgs/tools/backup/tarsnap/default.nix
+++ b/pkgs/tools/backup/tarsnap/default.nix
@@ -31,8 +31,8 @@ stdenv.mkDerivation rec {
     install -m 444 -D ${zshCompletion} $out/share/zsh/site-functions/_tarsnap
   '';
 
-  buildInputs = [ openssl zlib ] ++ lib.optional stdenv.isLinux e2fsprogs
-                ++ lib.optional stdenv.isDarwin bzip2;
+  buildInputs = [ openssl zlib ] ++ lib.optional stdenv.hostPlatform.isLinux e2fsprogs
+                ++ lib.optional stdenv.hostPlatform.isDarwin bzip2;
 
   meta = {
     description = "Online backups for the truly paranoid";
diff --git a/pkgs/tools/bluetooth/blueman/default.nix b/pkgs/tools/bluetooth/blueman/default.nix
index 572a73be3c88..effde184d1f8 100644
--- a/pkgs/tools/bluetooth/blueman/default.nix
+++ b/pkgs/tools/bluetooth/blueman/default.nix
@@ -1,7 +1,7 @@
 { config, stdenv, lib, fetchurl, intltool, pkg-config, python3Packages, bluez, gtk3
 , obex_data_server, xdg-utils, dnsmasq, dhcpcd, iproute2
 , adwaita-icon-theme, librsvg, wrapGAppsHook3, gobject-introspection
-, networkmanager, withPulseAudio ? config.pulseaudio or stdenv.isLinux, libpulseaudio }:
+, networkmanager, withPulseAudio ? config.pulseaudio or stdenv.hostPlatform.isLinux, libpulseaudio }:
 
 let
   pythonPackages = python3Packages;
diff --git a/pkgs/tools/cd-dvd/cdrdao/default.nix b/pkgs/tools/cd-dvd/cdrdao/default.nix
index 84cad2a5d96d..b4e93adce864 100644
--- a/pkgs/tools/cd-dvd/cdrdao/default.nix
+++ b/pkgs/tools/cd-dvd/cdrdao/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation (finalAttrs: {
     libvorbis
     libmad
     libao
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     IOKit
   ];
diff --git a/pkgs/tools/cd-dvd/cdrkit/default.nix b/pkgs/tools/cd-dvd/cdrkit/default.nix
index ae4a06bb57f2..7fd51d5d254f 100644
--- a/pkgs/tools/cd-dvd/cdrkit/default.nix
+++ b/pkgs/tools/cd-dvd/cdrkit/default.nix
@@ -11,8 +11,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ zlib bzip2 perl ] ++
-    lib.optionals stdenv.isLinux [ libcap ] ++
-    lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Carbon IOKit iconv ]);
+    lib.optionals stdenv.hostPlatform.isLinux [ libcap ] ++
+    lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Carbon IOKit iconv ]);
 
   hardeningDisable = [ "format" ];
   env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isMusl [
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   # efi-boot-patch extracted from http://arm.koji.fedoraproject.org/koji/rpminfo?rpmID=174244
   patches = [ ./include-path.patch ./cdrkit-1.1.9-efi-boot.patch ./cdrkit-1.1.11-fno-common.patch ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace libusal/scsi-mac-iokit.c \
       --replace "IOKit/scsi-commands/SCSITaskLib.h" "IOKit/scsi/SCSITaskLib.h"
     substituteInPlace genisoimage/sha256.c \
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
         --replace "#define HAVE_RCMD 1" "#undef HAVE_RCMD"
   '';
 
-  postConfigure = lib.optionalString stdenv.isDarwin ''
+  postConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     for f in */CMakeFiles/*.dir/link.txt ; do
       substituteInPlace "$f" \
         --replace "-lrt" "-framework IOKit"
diff --git a/pkgs/tools/cd-dvd/cdrtools/default.nix b/pkgs/tools/cd-dvd/cdrtools/default.nix
index 053aebecaf41..d264a0f8bdb3 100644
--- a/pkgs/tools/cd-dvd/cdrtools/default.nix
+++ b/pkgs/tools/cd-dvd/cdrtools/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ m4 ];
-  buildInputs = if stdenv.isDarwin then [ Carbon IOKit ] else [ acl libcap ];
+  buildInputs = if stdenv.hostPlatform.isDarwin then [ Carbon IOKit ] else [ acl libcap ];
 
   postPatch = ''
     sed "/\.mk3/d" -i libschily/Targets.man
diff --git a/pkgs/tools/cd-dvd/dvd+rw-tools/default.nix b/pkgs/tools/cd-dvd/dvd+rw-tools/default.nix
index a6b75e14bef7..5b0287efed81 100644
--- a/pkgs/tools/cd-dvd/dvd+rw-tools/default.nix
+++ b/pkgs/tools/cd-dvd/dvd+rw-tools/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ m4 ];
   buildInputs = [ cdrtools ]
-    ++ lib.optionals stdenv.isDarwin [ IOKit ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit ];
 
   makeFlags = [
     "prefix=${placeholder "out"}"
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     "CXX=${stdenv.cc.targetPrefix}c++"
   ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     # error: invalid suffix on literal; C++11 requires a space between literal and identifier
     "-Wno-reserved-user-defined-literal"
     # error: non-constant-expression cannot be narrowed from type 'size_t' (aka 'unsigned long') to 'IOByteCount' (aka 'unsigned int') in initializer list
diff --git a/pkgs/tools/compression/bzip3/default.nix b/pkgs/tools/compression/bzip3/default.nix
index 92ddefdb8662..889f64b52d8b 100644
--- a/pkgs/tools/compression/bzip3/default.nix
+++ b/pkgs/tools/compression/bzip3/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   configureFlags = [
     "--disable-arch-native"
-  ] ++ lib.optionals stdenv.isDarwin [ "--disable-link-time-optimization" ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "--disable-link-time-optimization" ];
 
   passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
 
diff --git a/pkgs/tools/compression/imagelol/default.nix b/pkgs/tools/compression/imagelol/default.nix
index 89515e31b4d2..9d5cc34b3827 100644
--- a/pkgs/tools/compression/imagelol/default.nix
+++ b/pkgs/tools/compression/imagelol/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     cp ./ImageLOL $out/bin
   '';
 
-  cmakeFlags = [ (lib.cmakeFeature "CMAKE_C_FLAGS" "-std=gnu90") ] ++ lib.optional (stdenv.isDarwin && stdenv.isAarch64) "-DPNG_ARM_NEON=off";
+  cmakeFlags = [ (lib.cmakeFeature "CMAKE_C_FLAGS" "-std=gnu90") ] ++ lib.optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) "-DPNG_ARM_NEON=off";
 
   meta = with lib; {
     homepage = "https://github.com/MCredstoner2004/ImageLOL";
diff --git a/pkgs/tools/compression/lrzip/default.nix b/pkgs/tools/compression/lrzip/default.nix
index f485bab4a749..eab035f06204 100644
--- a/pkgs/tools/compression/lrzip/default.nix
+++ b/pkgs/tools/compression/lrzip/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-Mb324ojtLV0S10KhL7Vjf3DhSOtCy1pFMTzvLkTnpXM=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Building the ASM/x86 directory creates an empty archive,
     # which fails on darwin, so remove it
     # https://github.com/ckolivas/lrzip/issues/193
diff --git a/pkgs/tools/compression/pigz/default.nix b/pkgs/tools/compression/pigz/default.nix
index 106b14b81b64..a6eaab1a6ef2 100644
--- a/pkgs/tools/compression/pigz/default.nix
+++ b/pkgs/tools/compression/pigz/default.nix
@@ -13,11 +13,11 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  buildInputs = [ zlib ] ++ lib.optional stdenv.isLinux util-linux;
+  buildInputs = [ zlib ] ++ lib.optional stdenv.hostPlatform.isLinux util-linux;
 
   makeFlags = [ "CC=${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc" ];
 
-  doCheck = stdenv.isLinux;
+  doCheck = stdenv.hostPlatform.isLinux;
   checkTarget = "tests";
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/tools/compression/zstd/default.nix b/pkgs/tools/compression/zstd/default.nix
index ba5fb90c1360..f9d3a3d074c9 100644
--- a/pkgs/tools/compression/zstd/default.nix
+++ b/pkgs/tools/compression/zstd/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake ]
-   ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+   ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
   buildInputs = lib.optional stdenv.hostPlatform.isUnix bash;
 
   patches = [
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
     substituteInPlace build/cmake/tests/CMakeLists.txt \
       --replace 'libzstd_static' 'libzstd_shared'
     sed -i \
-      "1aexport ${lib.optionalString stdenv.isDarwin "DY"}LD_LIBRARY_PATH=$PWD/build_/lib" \
+      "1aexport ${lib.optionalString stdenv.hostPlatform.isDarwin "DY"}LD_LIBRARY_PATH=$PWD/build_/lib" \
       tests/playTests.sh
   '';
 
@@ -87,7 +87,7 @@ stdenv.mkDerivation rec {
   '' + lib.optionalString buildContrib (
     ''
       cp contrib/pzstd/pzstd $bin/bin/pzstd
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       install_name_tool -change @rpath/libzstd.1.dylib $out/lib/libzstd.1.dylib $bin/bin/pzstd
     ''
   );
diff --git a/pkgs/tools/filesystems/aefs/default.nix b/pkgs/tools/filesystems/aefs/default.nix
index af4e20ac55ee..c56a4b189e15 100644
--- a/pkgs/tools/filesystems/aefs/default.nix
+++ b/pkgs/tools/filesystems/aefs/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation {
   #
   #     $ tar xf "$(nix-build -A aefs.src)"
   #     $ grep -R FUSE_USE_VERSION
-  configureFlags = lib.optional stdenv.isDarwin "CPPFLAGS=-DFUSE_USE_VERSION=26";
+  configureFlags = lib.optional stdenv.hostPlatform.isDarwin "CPPFLAGS=-DFUSE_USE_VERSION=26";
 
   nativeBuildInputs = [ autoreconfHook git ];
 
@@ -37,6 +37,6 @@ stdenv.mkDerivation {
     maintainers = [ ];
     license = licenses.gpl2Plus;
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/filesystems/android-file-transfer/default.nix b/pkgs/tools/filesystems/android-file-transfer/default.nix
index b5fe1a4e85ea..78d60b90b395 100644
--- a/pkgs/tools/filesystems/android-file-transfer/default.nix
+++ b/pkgs/tools/filesystems/android-file-transfer/default.nix
@@ -26,7 +26,7 @@ mkDerivation rec {
   nativeBuildInputs = [ cmake readline pkg-config wrapQtAppsHook ];
   buildInputs = [ fuse qtbase qttools ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/Applications
     mv $out/*.app $out/Applications
   '';
diff --git a/pkgs/tools/filesystems/apfs-fuse/default.nix b/pkgs/tools/filesystems/apfs-fuse/default.nix
index 5881d361c549..88b2c5d3e624 100644
--- a/pkgs/tools/filesystems/apfs-fuse/default.nix
+++ b/pkgs/tools/filesystems/apfs-fuse/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
     fetchSubmodules = true;
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace CMakeLists.txt \
       --replace "/usr/local/lib/libosxfuse.dylib" "fuse"
   '';
@@ -20,14 +20,14 @@ stdenv.mkDerivation {
   nativeBuildInputs = [ cmake ];
 
   buildInputs = [
-    (if stdenv.isDarwin then fuse else fuse3)
+    (if stdenv.hostPlatform.isDarwin then fuse else fuse3)
     bzip2
     zlib
-  ] ++ lib.optional stdenv.isLinux attr;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux attr;
 
-  cmakeFlags = lib.optional stdenv.isDarwin "-DUSE_FUSE3=OFF";
+  cmakeFlags = lib.optional stdenv.hostPlatform.isDarwin "-DUSE_FUSE3=OFF";
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-DUSE_FUSE2";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-DUSE_FUSE2";
 
   postFixup = ''
     ln -s $out/bin/apfs-fuse $out/bin/mount.fuse.apfs-fuse
diff --git a/pkgs/tools/filesystems/bindfs/default.nix b/pkgs/tools/filesystems/bindfs/default.nix
index a8013bd8600b..f086e9416ad6 100644
--- a/pkgs/tools/filesystems/bindfs/default.nix
+++ b/pkgs/tools/filesystems/bindfs/default.nix
@@ -19,9 +19,9 @@ stdenv.mkDerivation (finalAttrs: {
     pkg-config
   ];
 
-  buildInputs = if stdenv.isDarwin then [ fuse ] else [ fuse3 ];
+  buildInputs = if stdenv.hostPlatform.isDarwin then [ fuse ] else [ fuse3 ];
 
-  configureFlags = lib.optional stdenv.isDarwin "--disable-macos-fs-link";
+  configureFlags = lib.optional stdenv.hostPlatform.isDarwin "--disable-macos-fs-link";
 
   postFixup = ''
     ln -s $out/bin/bindfs $out/bin/mount.fuse.bindfs
diff --git a/pkgs/tools/filesystems/boxfs/default.nix b/pkgs/tools/filesystems/boxfs/default.nix
index 04106ee68b31..b12966541c99 100644
--- a/pkgs/tools/filesystems/boxfs/default.nix
+++ b/pkgs/tools/filesystems/boxfs/default.nix
@@ -43,7 +43,7 @@ in stdenv.mkDerivation {
   buildFlags = [
     "static"
     "CC=${stdenv.cc.targetPrefix}cc"
-  ] ++ lib.optional stdenv.isDarwin "CFLAGS=-D_BSD_SOURCE";
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "CFLAGS=-D_BSD_SOURCE";
 
   installPhase = ''
     mkdir -p $out/bin
diff --git a/pkgs/tools/filesystems/ceph/default.nix b/pkgs/tools/filesystems/ceph/default.nix
index e4f0bae9b27b..e5beaf3841df 100644
--- a/pkgs/tools/filesystems/ceph/default.nix
+++ b/pkgs/tools/filesystems/ceph/default.nix
@@ -382,7 +382,7 @@ in rec {
       utf8proc
       zlib
       zstd
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       keyutils
       libcap_ng
       liburing
@@ -457,7 +457,7 @@ in rec {
       "-DWITH_MGR_DASHBOARD_FRONTEND:BOOL=OFF"
       # WITH_XFS has been set default ON from Ceph 16, keeping it optional in nixpkgs for now
       ''-DWITH_XFS=${if optLibxfs != null then "ON" else "OFF"}''
-    ] ++ lib.optional stdenv.isLinux "-DWITH_SYSTEM_LIBURING=ON";
+    ] ++ lib.optional stdenv.hostPlatform.isLinux "-DWITH_SYSTEM_LIBURING=ON";
 
     preBuild =
       # The legacy-option-headers target is not correctly empbedded in the build graph.
diff --git a/pkgs/tools/filesystems/ceph/old-python-packages/cryptography.nix b/pkgs/tools/filesystems/ceph/old-python-packages/cryptography.nix
index 8583cce73dae..4da68dfb751b 100644
--- a/pkgs/tools/filesystems/ceph/old-python-packages/cryptography.nix
+++ b/pkgs/tools/filesystems/ceph/old-python-packages/cryptography.nix
@@ -81,7 +81,7 @@ buildPythonPackage rec {
 
   buildInputs =
     [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       Security
       libiconv
     ]
@@ -107,7 +107,7 @@ buildPythonPackage rec {
       # save compute time by not running benchmarks
       "tests/bench"
     ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
       # aarch64-darwin forbids W+X memory, but this tests depends on it:
       # * https://cffi.readthedocs.io/en/latest/using.html#callbacks
       "tests/hazmat/backends/test_openssl_memleak.py"
diff --git a/pkgs/tools/filesystems/cryfs/default.nix b/pkgs/tools/filesystems/cryfs/default.nix
index 588dcb320aa5..52444e56cb05 100644
--- a/pkgs/tools/filesystems/cryfs/default.nix
+++ b/pkgs/tools/filesystems/cryfs/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
   ]; # ++ lib.optional doCheck "-DCMAKE_PREFIX_PATH=${gtest.dev}/lib/cmake";
 
   # macFUSE needs to be installed for the test to succeed on Darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/tools/filesystems/curlftpfs/default.nix b/pkgs/tools/filesystems/curlftpfs/default.nix
index 7b3760ba5aa2..06a86a74b523 100644
--- a/pkgs/tools/filesystems/curlftpfs/default.nix
+++ b/pkgs/tools/filesystems/curlftpfs/default.nix
@@ -21,9 +21,9 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ fuse curl glib zlib ];
 
-  CFLAGS = lib.optionalString stdenv.isDarwin "-D__off_t=off_t";
+  CFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-D__off_t=off_t";
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Fix the build on macOS with macFUSE installed. Needs autoreconfHook for
     # this change to effect
     substituteInPlace configure.ac --replace \
diff --git a/pkgs/tools/filesystems/dosfstools/default.nix b/pkgs/tools/filesystems/dosfstools/default.nix
index eda54d341f9a..0305e6514640 100644
--- a/pkgs/tools/filesystems/dosfstools/default.nix
+++ b/pkgs/tools/filesystems/dosfstools/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ autoreconfHook pkg-config ]
-    ++ lib.optional stdenv.isDarwin libiconv;
+    ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   # configure.ac:75: error: required file './config.rpath' not found
   # https://github.com/dosfstools/dosfstools/blob/master/autogen.sh
diff --git a/pkgs/tools/filesystems/e2fsprogs/default.nix b/pkgs/tools/filesystems/e2fsprogs/default.nix
index b8443e8ac880..4d0849b896d0 100644
--- a/pkgs/tools/filesystems/e2fsprogs/default.nix
+++ b/pkgs/tools/filesystems/e2fsprogs/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, buildPackages, fetchurl, fetchpatch, pkg-config, libuuid, gettext, texinfo
-, withFuse ? stdenv.isLinux, fuse3
+, withFuse ? stdenv.hostPlatform.isLinux, fuse3
 , shared ? !stdenv.hostPlatform.isStatic
 , e2fsprogs, runCommand
 }:
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
   ];
 
   configureFlags =
-    if stdenv.isLinux then [
+    if stdenv.hostPlatform.isLinux then [
       # It seems that the e2fsprogs is one of the few packages that cannot be
       # build with shared and static libs.
       (if shared then "--enable-elf-shlibs" else "--disable-elf-shlibs")
diff --git a/pkgs/tools/filesystems/erofs-utils/default.nix b/pkgs/tools/filesystems/erofs-utils/default.nix
index 3946523ccb10..93e6fd18f984 100644
--- a/pkgs/tools/filesystems/erofs-utils/default.nix
+++ b/pkgs/tools/filesystems/erofs-utils/default.nix
@@ -10,7 +10,7 @@
   xz,
   zlib,
   libselinux,
-  fuseSupport ? stdenv.isLinux,
+  fuseSupport ? stdenv.hostPlatform.isLinux,
   selinuxSupport ? false,
   lzmaSupport ? false,
 }:
diff --git a/pkgs/tools/filesystems/f3/default.nix b/pkgs/tools/filesystems/f3/default.nix
index ebdedd5b4aa3..04430fc23ee4 100644
--- a/pkgs/tools/filesystems/f3/default.nix
+++ b/pkgs/tools/filesystems/f3/default.nix
@@ -26,13 +26,13 @@ stdenv.mkDerivation rec {
     done
   '';
 
-  buildInputs = lib.optionals stdenv.isLinux [ systemd parted ]
-    ++ lib.optionals stdenv.isDarwin [ argp-standalone ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ systemd parted ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ argp-standalone ];
 
   buildFlags = [
     "all" # f3read, f3write
   ]
-  ++ lib.optional stdenv.isLinux "extra"; # f3brew, f3fix, f3probe
+  ++ lib.optional stdenv.hostPlatform.isLinux "extra"; # f3brew, f3fix, f3probe
 
   installFlags = [
     "PREFIX=${placeholder "out"}"
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
   installTargets = [
     "install"
   ]
-  ++ lib.optional stdenv.isLinux "install-extra";
+  ++ lib.optional stdenv.hostPlatform.isLinux "install-extra";
 
   postInstall = ''
     install -Dm555 -t $out/bin f3write.h2w log-f3wr
diff --git a/pkgs/tools/filesystems/file-rename/default.nix b/pkgs/tools/filesystems/file-rename/default.nix
index 8bc7a899cd3b..e2e1eccae216 100644
--- a/pkgs/tools/filesystems/file-rename/default.nix
+++ b/pkgs/tools/filesystems/file-rename/default.nix
@@ -20,7 +20,7 @@ perlPackages.buildPerlPackage {
       --replace "#!${perl}/bin/perl" "#!${perl}/bin/perl -I $out/${perl.libPrefix}"
   '';
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Perl extension for renaming multiple files";
diff --git a/pkgs/tools/filesystems/garage/default.nix b/pkgs/tools/filesystems/garage/default.nix
index 2430536656dc..34f9da67ae64 100644
--- a/pkgs/tools/filesystems/garage/default.nix
+++ b/pkgs/tools/filesystems/garage/default.nix
@@ -35,7 +35,7 @@ let
 
     buildInputs = [
       openssl
-    ] ++ lib.optional stdenv.isDarwin Security;
+    ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
     checkInputs = [
       cacert
@@ -99,7 +99,7 @@ rec {
     hash = "sha256-2QGbR6YvMQeMxN3n1MMJ5qfBcEJ5hjXARUOfEn+m4Jc=";
     cargoHash = "sha256-1cGlJP/RRgxt3GGMN1c+7Y5lLHJyvHEnpLsR35R5FfI=";
     cargoPatches = [ ./update-time-0.8.patch ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 
   garage_0_9_4 = generic {
@@ -107,14 +107,14 @@ rec {
     hash = "sha256-2ZaxenwaVGYYUjUJaGgnGpZNQprQV9+Jns2sXM6cowk=";
     cargoHash = "sha256-1Hrip4R5dr31czOcFMGW4ZvVfVwvdd7LkwukwNpS3o4=";
     cargoPatches = [ ./update-time.patch ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 
   garage_1_0_1 = generic {
     version = "1.0.1";
     hash = "sha256-f6N2asycN04I6U5XQ5LEAqYu/v5jYZiFCxZ8YQ32XyM=";
     cargoHash = "sha256-jpc/vaygC5WNSkVA3P01mCRk9Nx/CUumE893tHWoe34=";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 
   garage_0_8 = garage_0_8_7;
diff --git a/pkgs/tools/filesystems/genimage/default.nix b/pkgs/tools/filesystems/genimage/default.nix
index 8de22d3efcdf..3e6ae58049bd 100644
--- a/pkgs/tools/filesystems/genimage/default.nix
+++ b/pkgs/tools/filesystems/genimage/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://git.pengutronix.de/cgit/genimage";
     description = "Generate filesystem images from directory trees";
     license = licenses.gpl2Plus;
diff --git a/pkgs/tools/filesystems/go-mtpfs/default.nix b/pkgs/tools/filesystems/go-mtpfs/default.nix
index 4a1341dce7b0..26655053574e 100644
--- a/pkgs/tools/filesystems/go-mtpfs/default.nix
+++ b/pkgs/tools/filesystems/go-mtpfs/default.nix
@@ -29,7 +29,7 @@ buildGoModule rec {
     homepage = "https://github.com/hanwen/go-mtpfs";
     license = licenses.bsd3;
     maintainers = [ ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "go-mtpfs";
   };
 }
diff --git a/pkgs/tools/filesystems/goofys/default.nix b/pkgs/tools/filesystems/goofys/default.nix
index c8840e0fd3bc..06039d529d56 100644
--- a/pkgs/tools/filesystems/goofys/default.nix
+++ b/pkgs/tools/filesystems/goofys/default.nix
@@ -30,7 +30,7 @@ buildGoModule {
     description = "High-performance, POSIX-ish Amazon S3 file system written in Go";
     license = [ lib.licenses.mit ];
     maintainers = [ lib.maintainers.adisbladis ];
-    broken = stdenv.isDarwin; # needs to update gopsutil to at least v3.21.3 to include https://github.com/shirou/gopsutil/pull/1042
+    broken = stdenv.hostPlatform.isDarwin; # needs to update gopsutil to at least v3.21.3 to include https://github.com/shirou/gopsutil/pull/1042
     mainProgram = "goofys";
   };
 
diff --git a/pkgs/tools/filesystems/moosefs/default.nix b/pkgs/tools/filesystems/moosefs/default.nix
index 4f5524d6734c..51066544749b 100644
--- a/pkgs/tools/filesystems/moosefs/default.nix
+++ b/pkgs/tools/filesystems/moosefs/default.nix
@@ -28,15 +28,15 @@ stdenv.mkDerivation rec {
 
   strictDeps = true;
 
-  buildFlags = lib.optionals stdenv.isDarwin [ "CPPFLAGS=-UHAVE_STRUCT_STAT_ST_BIRTHTIME" ];
+  buildFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "CPPFLAGS=-UHAVE_STRUCT_STAT_ST_BIRTHTIME" ];
 
   # Fix the build on macOS with macFUSE installed
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure --replace \
       "/usr/local/lib/pkgconfig" "/nonexistent"
   '';
 
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace config.h --replace \
       "#define HAVE_STRUCT_STAT_ST_BIRTHTIME 1" \
       "#undef HAVE_STRUCT_STAT_ST_BIRTHTIME"
diff --git a/pkgs/tools/filesystems/mtools/default.nix b/pkgs/tools/filesystems/mtools/default.nix
index ef5eafc40508..3e2c75aeb092 100644
--- a/pkgs/tools/filesystems/mtools/default.nix
+++ b/pkgs/tools/filesystems/mtools/default.nix
@@ -9,12 +9,12 @@ stdenv.mkDerivation rec {
     hash = "sha256-N9xN8CJTPD1LLsHHiXPCfH6LWFN0wtRqtkxqPbMe3bg=";
   };
 
-  patches = lib.optional stdenv.isDarwin ./UNUSED-darwin.patch;
+  patches = lib.optional stdenv.hostPlatform.isDarwin ./UNUSED-darwin.patch;
 
   # fails to find X on darwin
-  configureFlags = lib.optional stdenv.isDarwin "--without-x";
+  configureFlags = lib.optional stdenv.hostPlatform.isDarwin "--without-x";
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   doCheck = true;
 
diff --git a/pkgs/tools/filesystems/mtpfs/default.nix b/pkgs/tools/filesystems/mtpfs/default.nix
index d84f9cc9b9b1..a0ca5e5a82aa 100644
--- a/pkgs/tools/filesystems/mtpfs/default.nix
+++ b/pkgs/tools/filesystems/mtpfs/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
     platforms = platforms.all;
     license = licenses.gpl3;
     maintainers = [ maintainers.qknight ];
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/mtpfs.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/mtpfs.x86_64-darwin
     mainProgram = "mtpfs";
   };
 }
diff --git a/pkgs/tools/filesystems/ntfs-3g/default.nix b/pkgs/tools/filesystems/ntfs-3g/default.nix
index 56d6bdc7fba2..5a9426cee486 100644
--- a/pkgs/tools/filesystems/ntfs-3g/default.nix
+++ b/pkgs/tools/filesystems/ntfs-3g/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ gettext libuuid ]
     ++ lib.optionals crypto [ gnutls libgcrypt ]
-    ++ lib.optionals stdenv.isDarwin [ macfuse-stubs DiskArbitration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ macfuse-stubs DiskArbitration ];
 
   # Note: libgcrypt is listed here non-optionally because its m4 macros are
   # being used in ntfs-3g's configure.ac.
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     "--enable-extras"
     "--with-mount-helper=${mount}/bin/mount"
     "--with-umount-helper=${mount}/bin/umount"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "--with-modprobe-helper=${kmod}/bin/modprobe"
   ];
 
diff --git a/pkgs/tools/filesystems/snapraid/default.nix b/pkgs/tools/filesystems/snapraid/default.nix
index 83353394e009..e964f944d3a8 100644
--- a/pkgs/tools/filesystems/snapraid/default.nix
+++ b/pkgs/tools/filesystems/snapraid/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   VERSION = version;
 
-  doCheck = !(stdenv.isDarwin && stdenv.isx86_64);
+  doCheck = !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64);
 
   nativeBuildInputs = [
     autoreconfHook
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ ];
 
   # SMART is only supported on Linux and requires the smartmontools package
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/snapraid \
      --prefix PATH : ${lib.makeBinPath [ smartmontools ]}
   '';
diff --git a/pkgs/tools/filesystems/sshfs-fuse/common.nix b/pkgs/tools/filesystems/sshfs-fuse/common.nix
index 932c7693dc88..3654c77cc4b8 100644
--- a/pkgs/tools/filesystems/sshfs-fuse/common.nix
+++ b/pkgs/tools/filesystems/sshfs-fuse/common.nix
@@ -8,7 +8,7 @@
 }:
 
 let
-  fuse = if stdenv.isDarwin then macfuse-stubs else fuse3;
+  fuse = if stdenv.hostPlatform.isDarwin then macfuse-stubs else fuse3;
 in stdenv.mkDerivation rec {
   pname = "sshfs-fuse";
   inherit version;
@@ -33,12 +33,12 @@ in stdenv.mkDerivation rec {
   postInstall = ''
     mkdir -p $out/sbin
     ln -sf $out/bin/sshfs $out/sbin/mount.sshfs
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     wrapProgram $out/bin/sshfs --prefix PATH : "${openssh}/bin"
   '';
 
   # doCheck = true;
-  checkPhase = lib.optionalString (!stdenv.isDarwin) ''
+  checkPhase = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     # The tests need fusermount:
     mkdir bin
     cp ${fuse}/bin/fusermount3 bin/fusermount
diff --git a/pkgs/tools/filesystems/sshfs-fuse/default.nix b/pkgs/tools/filesystems/sshfs-fuse/default.nix
index 2f11bb0047ad..bc836ac3abad 100644
--- a/pkgs/tools/filesystems/sshfs-fuse/default.nix
+++ b/pkgs/tools/filesystems/sshfs-fuse/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, callPackage, fetchpatch }:
 
 let mkSSHFS = args: callPackage (import ./common.nix args) { };
-in if stdenv.isDarwin then
+in if stdenv.hostPlatform.isDarwin then
   mkSSHFS {
     version = "2.10"; # macFUSE isn't yet compatible with libfuse 3.x
     sha256 = "1dmw4kx6vyawcywiv8drrajnam0m29mxfswcp4209qafzx3mjlp1";
diff --git a/pkgs/tools/filesystems/svnfs/default.nix b/pkgs/tools/filesystems/svnfs/default.nix
index 8aa66de8da3f..2f0e32799d80 100644
--- a/pkgs/tools/filesystems/svnfs/default.nix
+++ b/pkgs/tools/filesystems/svnfs/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   #
   #     $ tar xf "$(nix-build -A svnfs.src)"
   #     $ grep -R FUSE_USE_VERSION
-  configureFlags = lib.optionals stdenv.isDarwin [ "CFLAGS=-DFUSE_USE_VERSION=25" ];
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "CFLAGS=-DFUSE_USE_VERSION=25" ];
 
   # why is this required?
   preConfigure=''
diff --git a/pkgs/tools/filesystems/unionfs-fuse/default.nix b/pkgs/tools/filesystems/unionfs-fuse/default.nix
index 4dc9ca9de6e6..2518cfb24ba3 100644
--- a/pkgs/tools/filesystems/unionfs-fuse/default.nix
+++ b/pkgs/tools/filesystems/unionfs-fuse/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     ./prevent-kill-on-shutdown.patch
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace CMakeLists.txt \
       --replace '/usr/local/include/osxfuse/fuse' '${fuse}/include/fuse'
   '';
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   #
   # This must be done in preConfigure because the build process removes
   # helper from the source directory during the build.
-  preConfigure = lib.optionalString (!stdenv.isDarwin) ''
+  preConfigure = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mkdir -p $out/sbin
     cp -a mount.unionfs $out/sbin/mount.unionfs-fuse
     substituteInPlace $out/sbin/mount.unionfs-fuse --replace mount.fuse ${fuse}/sbin/mount.fuse
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "FUSE UnionFS implementation";
     homepage = "https://github.com/rpodgorny/unionfs-fuse";
     license = licenses.bsd3;
diff --git a/pkgs/tools/filesystems/wdfs/default.nix b/pkgs/tools/filesystems/wdfs/default.nix
index 3f8897c091bc..9c1b68cc6307 100644
--- a/pkgs/tools/filesystems/wdfs/default.nix
+++ b/pkgs/tools/filesystems/wdfs/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [fuse glib neon];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Fix the build on macOS with macFUSE installed. Needs autoreconfHook to
     # take effect.
     substituteInPlace configure.ac --replace \
diff --git a/pkgs/tools/filesystems/yandex-disk/default.nix b/pkgs/tools/filesystems/yandex-disk/default.nix
index ad3c44faf616..6e7a19ad8ee8 100644
--- a/pkgs/tools/filesystems/yandex-disk/default.nix
+++ b/pkgs/tools/filesystems/yandex-disk/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchurl, writeText, zlib, rpmextract, patchelf, which }:
 
 let
-  p = if stdenv.is64bit then {
+  p = if stdenv.hostPlatform.is64bit then {
       arch = "x86_64";
       gcclib = "${stdenv.cc.cc.lib}/lib64";
       sha256 = "sha256-HH/pLZmDr6m/B3e6MHafDGnNWR83oR2y1ijVMR/LOF0=";
diff --git a/pkgs/tools/games/ajour/default.nix b/pkgs/tools/games/ajour/default.nix
index 7416d4f717ab..5ed670a77de6 100644
--- a/pkgs/tools/games/ajour/default.nix
+++ b/pkgs/tools/games/ajour/default.nix
@@ -92,7 +92,7 @@ in rustPlatform.buildRustPackage rec {
     homepage = "https://github.com/casperstorm/ajour";
     changelog = "https://github.com/casperstorm/ajour/blob/master/CHANGELOG.md";
     license = licenses.mit;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ hexa ];
   };
 }
diff --git a/pkgs/tools/games/pokefinder/default.nix b/pkgs/tools/games/pokefinder/default.nix
index e4d773684343..6ea5f168a8f4 100644
--- a/pkgs/tools/games/pokefinder/default.nix
+++ b/pkgs/tools/games/pokefinder/default.nix
@@ -42,10 +42,10 @@ stdenv.mkDerivation rec {
 
   installPhase = ''
     runHook preInstall
-  '' + lib.optionalString (stdenv.isDarwin) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin) ''
     mkdir -p $out/Applications
     cp -R Source/PokeFinder.app $out/Applications
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     install -D Source/PokeFinder $out/bin/PokeFinder
     mkdir -p $out/share/pixmaps
     convert "$src/Source/Form/Images/pokefinder.ico[-1]" $out/share/pixmaps/pokefinder.png
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  nativeBuildInputs = [ cmake wrapQtAppsHook python3 ] ++ lib.optionals (!stdenv.isDarwin) [ copyDesktopItems imagemagick ];
+  nativeBuildInputs = [ cmake wrapQtAppsHook python3 ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ copyDesktopItems imagemagick ];
 
   desktopItems = [
     (makeDesktopItem {
@@ -67,7 +67,7 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [ qtbase qttools ]
-    ++ lib.optionals stdenv.isLinux [ qtwayland ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ qtwayland ];
 
   passthru.updateScript = gitUpdater {
     rev-prefix = "v";
diff --git a/pkgs/tools/games/ukmm/default.nix b/pkgs/tools/games/ukmm/default.nix
index 98709602dcde..9a640b004bf8 100644
--- a/pkgs/tools/games/ukmm/default.nix
+++ b/pkgs/tools/games/ukmm/default.nix
@@ -82,7 +82,7 @@ rustPlatform.buildRustPackage rec {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ kira-bruneau ];
     platforms = platforms.linux;
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
     mainProgram = "ukmm";
   };
 }
diff --git a/pkgs/tools/graphics/amber/default.nix b/pkgs/tools/graphics/amber/default.nix
index 0d86e5c75bfb..12ff88d1340e 100644
--- a/pkgs/tools/graphics/amber/default.nix
+++ b/pkgs/tools/graphics/amber/default.nix
@@ -70,7 +70,7 @@ stdenv.mkDerivation (finalAttrs: {
     makeWrapper
     pkg-config
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
   ];
 
diff --git a/pkgs/tools/graphics/astc-encoder/default.nix b/pkgs/tools/graphics/astc-encoder/default.nix
index a67fdc1d3978..31758877c469 100644
--- a/pkgs/tools/graphics/astc-encoder/default.nix
+++ b/pkgs/tools/graphics/astc-encoder/default.nix
@@ -81,6 +81,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     license = licenses.asl20;
     maintainers = with maintainers; [ dasisdormax ];
-    broken = !stdenv.is64bit;
+    broken = !stdenv.hostPlatform.is64bit;
   };
 }
diff --git a/pkgs/tools/graphics/asymptote/default.nix b/pkgs/tools/graphics/asymptote/default.nix
index 55fce30cd990..ba0dd70254b3 100644
--- a/pkgs/tools/graphics/asymptote/default.nix
+++ b/pkgs/tools/graphics/asymptote/default.nix
@@ -41,13 +41,13 @@ stdenv.mkDerivation (finalAttrs: {
     boehmgc ncurses readline gsl libsigsegv
     zlib perl curl qtbase qtsvg boost
     (python3.withPackages (ps: with ps; [ cson numpy pyqt5 ]))
-  ] ++ lib.optionals stdenv.isLinux [ libtirpc ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ libtirpc ];
 
   propagatedBuildInputs = [
     glm
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libglut libGLU libGL
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     OpenGL GLUT Cocoa
   ]);
 
@@ -77,7 +77,7 @@ stdenv.mkDerivation (finalAttrs: {
   # do not use bundled libgc.so
   configureFlags = [ "--enable-gc=system" ]
     # TODO add open_memstream to enable XDR/V3D on Darwin (requires memstream or >=10.13 Apple SDK)
-    ++ lib.optional stdenv.isDarwin "--enable-xdr=no";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "--enable-xdr=no";
 
   env.NIX_CFLAGS_COMPILE = "-I${boehmgc.dev}/include/gc";
 
diff --git a/pkgs/tools/graphics/barcode/default.nix b/pkgs/tools/graphics/barcode/default.nix
index 9eb368b83af6..6199a87925d3 100644
--- a/pkgs/tools/graphics/barcode/default.nix
+++ b/pkgs/tools/graphics/barcode/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  configureFlags = lib.optional stdenv.isDarwin "ac_cv_func_calloc_0_nonnull=yes";
+  configureFlags = lib.optional stdenv.hostPlatform.isDarwin "ac_cv_func_calloc_0_nonnull=yes";
 
   hardeningDisable = [ "format" ];
 
diff --git a/pkgs/tools/graphics/dcraw/default.nix b/pkgs/tools/graphics/dcraw/default.nix
index 35657cf8fc53..9e35c1bfdc86 100644
--- a/pkgs/tools/graphics/dcraw/default.nix
+++ b/pkgs/tools/graphics/dcraw/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "1fdl3xa1fbm71xzc3760rsjkvf0x5jdjrvdzyg2l9ka24vdc7418";
   };
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin libiconv;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
   buildInputs = [ libjpeg lcms2 gettext ];
 
   # Jasper is disabled because the library is abandoned and has many
diff --git a/pkgs/tools/graphics/dmtx-utils/default.nix b/pkgs/tools/graphics/dmtx-utils/default.nix
index f03f38742e19..4c5883d56804 100644
--- a/pkgs/tools/graphics/dmtx-utils/default.nix
+++ b/pkgs/tools/graphics/dmtx-utils/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkg-config ];
 
   buildInputs = [ libdmtx imagemagick ]
-    ++ lib.optional stdenv.isDarwin Foundation;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Foundation;
 
   meta = {
     description = "Data matrix command-line utilities";
diff --git a/pkgs/tools/graphics/esshader/default.nix b/pkgs/tools/graphics/esshader/default.nix
index 38bd4d1b7f0a..b425ce5721ce 100644
--- a/pkgs/tools/graphics/esshader/default.nix
+++ b/pkgs/tools/graphics/esshader/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation {
     maintainers = with maintainers; [ astro ];
     platforms = lib.platforms.unix;
     # never built on aarch64-darwin, x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "esshader";
   };
 }
diff --git a/pkgs/tools/graphics/feedgnuplot/default.nix b/pkgs/tools/graphics/feedgnuplot/default.nix
index 6503a2887ab2..423d8d8d92f3 100644
--- a/pkgs/tools/graphics/feedgnuplot/default.nix
+++ b/pkgs/tools/graphics/feedgnuplot/default.nix
@@ -30,7 +30,7 @@ perlPackages.buildPerlPackage rec {
 
   outputs = [ "out" ];
 
-  nativeBuildInputs = [ makeWrapper installShellFiles ] ++ lib.optional stdenv.isDarwin shortenPerlShebang;
+  nativeBuildInputs = [ makeWrapper installShellFiles ] ++ lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
 
   buildInputs = [ gnuplot perl ]
     ++ (with perlPackages; [ ListMoreUtils IPCRun StringShellQuote ]);
@@ -45,7 +45,7 @@ perlPackages.buildPerlPackage rec {
   # Tests require gnuplot 4.6.4 and are completely skipped with gnuplot 5.
   doCheck = false;
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/feedgnuplot
   '' + ''
     wrapProgram $out/bin/feedgnuplot \
diff --git a/pkgs/tools/graphics/gnuplot/default.nix b/pkgs/tools/graphics/gnuplot/default.nix
index 97e566b561d2..c43059c03af5 100644
--- a/pkgs/tools/graphics/gnuplot/default.nix
+++ b/pkgs/tools/graphics/gnuplot/default.nix
@@ -17,7 +17,7 @@
 
 assert libX11 != null -> (fontconfig != null && gnused != null && coreutils != null);
 let
-  withX = libX11 != null && !aquaterm && !stdenv.isDarwin;
+  withX = libX11 != null && !aquaterm && !stdenv.hostPlatform.isDarwin;
 in
 (if withQt then mkDerivation else stdenv.mkDerivation) rec {
   pname = "gnuplot";
@@ -38,7 +38,7 @@ in
     ++ lib.optionals withX [ libX11 libXpm libXt libXaw ]
     ++ lib.optionals withQt [ qtbase qtsvg ]
     ++ lib.optional withWxGTK wxGTK32
-    ++ lib.optional (withWxGTK && stdenv.isDarwin) Cocoa;
+    ++ lib.optional (withWxGTK && stdenv.hostPlatform.isDarwin) Cocoa;
 
   postPatch = ''
     # lrelease is in qttools, not in qtbase.
@@ -51,7 +51,7 @@ in
     (if aquaterm then "--with-aquaterm" else "--without-aquaterm")
   ] ++ lib.optional withCaca "--with-caca";
 
-  CXXFLAGS = lib.optionalString (stdenv.isDarwin && withQt) "-std=c++11";
+  CXXFLAGS = lib.optionalString (stdenv.hostPlatform.isDarwin && withQt) "-std=c++11";
 
   # we'll wrap things ourselves
   dontWrapGApps = true;
diff --git a/pkgs/tools/graphics/graphviz/default.nix b/pkgs/tools/graphics/graphviz/default.nix
index 5cb3c24bc150..e27c35fd72c7 100644
--- a/pkgs/tools/graphics/graphviz/default.nix
+++ b/pkgs/tools/graphics/graphviz/default.nix
@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
     pango
     bash
   ] ++ optionals withXorg (with xorg; [ libXrender libXaw libXpm ])
-  ++ optionals stdenv.isDarwin [ ApplicationServices Foundation ];
+  ++ optionals stdenv.hostPlatform.isDarwin [ ApplicationServices Foundation ];
 
   hardeningDisable = [ "fortify" ];
 
@@ -70,7 +70,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  CPPFLAGS = optionalString (withXorg && stdenv.isDarwin)
+  CPPFLAGS = optionalString (withXorg && stdenv.hostPlatform.isDarwin)
     "-I${cairo.dev}/include/cairo";
 
   doCheck = false; # fails with "Graphviz test suite requires ksh93" which is not in nixpkgs
diff --git a/pkgs/tools/graphics/icoutils/default.nix b/pkgs/tools/graphics/icoutils/default.nix
index 0e22fe72c594..8c50ffdce62e 100644
--- a/pkgs/tools/graphics/icoutils/default.nix
+++ b/pkgs/tools/graphics/icoutils/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   # Fixes a build failure on aarch64-darwin. Define for all Darwin targets for when x86_64-darwin
   # upgrades to a newer SDK.
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-DTARGET_OS_IPHONE=0";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-DTARGET_OS_IPHONE=0";
 
   postPatch = ''
     patchShebangs extresso/extresso
diff --git a/pkgs/tools/graphics/lepton/default.nix b/pkgs/tools/graphics/lepton/default.nix
index 27fcca3cacbf..980f729e9725 100644
--- a/pkgs/tools/graphics/lepton/default.nix
+++ b/pkgs/tools/graphics/lepton/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake git ];
-  buildInputs = lib.optionals stdenv.isLinux [ glibc.static ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ glibc.static ];
 
   meta = with lib; {
     homepage = "https://github.com/dropbox/lepton";
diff --git a/pkgs/tools/graphics/mesa-demos/default.nix b/pkgs/tools/graphics/mesa-demos/default.nix
index 02cb25d251da..3ac1ede77eac 100644
--- a/pkgs/tools/graphics/mesa-demos/default.nix
+++ b/pkgs/tools/graphics/mesa-demos/default.nix
@@ -55,8 +55,8 @@ stdenv.mkDerivation rec {
   ];
 
   mesonFlags = [
-    "-Degl=${if stdenv.isDarwin then "disabled" else "auto"}"
-    (lib.mesonEnable "libdrm" (stdenv.isLinux))
+    "-Degl=${if stdenv.hostPlatform.isDarwin then "disabled" else "auto"}"
+    (lib.mesonEnable "libdrm" (stdenv.hostPlatform.isLinux))
     (lib.mesonEnable "osmesa" false)
     (lib.mesonEnable "wayland" (lib.meta.availableOn stdenv.hostPlatform wayland))
   ];
diff --git a/pkgs/tools/graphics/netpbm/default.nix b/pkgs/tools/graphics/netpbm/default.nix
index bbd24d056bdb..8426fbcc2032 100644
--- a/pkgs/tools/graphics/netpbm/default.nix
+++ b/pkgs/tools/graphics/netpbm/default.nix
@@ -87,7 +87,7 @@ stdenv.mkDerivation {
 
     # Fix path to rgb.txt
     echo "RGB_DB_PATH = $out/share/netpbm/misc/rgb.txt" >> config.mk
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     echo "LDSHLIB=-dynamiclib -install_name $out/lib/libnetpbm.\$(MAJ).dylib" >> config.mk
     echo "NETPBMLIBTYPE = dylib" >> config.mk
     echo "NETPBMLIBSUFFIX = dylib" >> config.mk
diff --git a/pkgs/tools/graphics/nifskope/default.nix b/pkgs/tools/graphics/nifskope/default.nix
index 3d9d89af0c96..4022c363ef64 100644
--- a/pkgs/tools/graphics/nifskope/default.nix
+++ b/pkgs/tools/graphics/nifskope/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
       url = "https://github.com/niftools/nifskope/commit/30954e7f01f3d779a2a1fd37d363e8a6ad560bd3.patch";
       sha256 = "0d6xjj2mjjhdd7w1aig5f75jksjni16jyj0lxsz51pys6xqb6fpj";
     })
-  ] ++ (lib.optional stdenv.isAarch64 ./no-sse-on-arm.patch);
+  ] ++ (lib.optional stdenv.hostPlatform.isAarch64 ./no-sse-on-arm.patch);
 
   buildInputs = [ qtbase qttools libGLU ];
   nativeBuildInputs = [ qmake wrapQtAppsHook ];
diff --git a/pkgs/tools/graphics/oxipng/default.nix b/pkgs/tools/graphics/oxipng/default.nix
index e127e2a3aa3c..d0715d8f1aa3 100644
--- a/pkgs/tools/graphics/oxipng/default.nix
+++ b/pkgs/tools/graphics/oxipng/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-LZ3YIosDpjDYVACWQsr/0XhgX4fyo8CyZG58WfLSzCs=";
 
-  doCheck = !stdenv.isAarch64 && !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isAarch64 && !stdenv.hostPlatform.isDarwin;
 
   meta = {
     homepage = "https://github.com/shssoichiro/oxipng";
diff --git a/pkgs/tools/graphics/pfstools/default.nix b/pkgs/tools/graphics/pfstools/default.nix
index 7d595c5e4ce1..b164799e9cc2 100644
--- a/pkgs/tools/graphics/pfstools/default.nix
+++ b/pkgs/tools/graphics/pfstools/default.nix
@@ -32,7 +32,7 @@ mkDerivation rec {
   buildInputs = [
     openexr zlib imagemagick6 fftwFloat
     fftw gsl libexif perl qtbase netpbm
-  ] ++ (if stdenv.isDarwin then (with darwin.apple_sdk.frameworks; [
+  ] ++ (if stdenv.hostPlatform.isDarwin then (with darwin.apple_sdk.frameworks; [
     OpenGL GLUT
   ]) else [
     libGLU libGL libglut
diff --git a/pkgs/tools/graphics/pngout/default.nix b/pkgs/tools/graphics/pngout/default.nix
index 41724043930c..03d25acd2986 100644
--- a/pkgs/tools/graphics/pngout/default.nix
+++ b/pkgs/tools/graphics/pngout/default.nix
@@ -14,7 +14,7 @@ let
   };
   platform = platforms."${stdenv.hostPlatform.system}"
     or (throw "Unsupported system: ${stdenv.hostPlatform.system}");
-  download = if stdenv.isDarwin
+  download = if stdenv.hostPlatform.isDarwin
     then { extension = "macos.zip"; hash = "sha256-MnL6lH7q/BrACG4fFJNfnvoh0JClVeaJIlX+XIj2aG4="; }
     else { extension = "linux.tar.gz"; hash = "sha256-rDi7pvDeKQM96GZTjDr6ZDQTGbaVu+OI77xf2egw6Sg="; };
 in
@@ -27,15 +27,15 @@ stdenv.mkDerivation rec {
     url = "http://static.jonof.id.au/dl/kenutils/pngout-${version}-${download.extension}";
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [ unzip ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ unzip ];
 
   # pngout is code-signed on Darwin, so don’t alter the binary to avoid breaking the signature.
-  dontFixup = stdenv.isDarwin;
+  dontFixup = stdenv.hostPlatform.isDarwin;
 
   installPhase = ''
     mkdir -p $out/bin
     cp ${platform.folder}/pngout $out/bin
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --set-interpreter ${stdenv.cc.libc}/lib/${platform.ld-linux} $out/bin/pngout
   '';
 
diff --git a/pkgs/tools/graphics/pstoedit/default.nix b/pkgs/tools/graphics/pstoedit/default.nix
index 810c2365b2c3..c9e8512b7755 100644
--- a/pkgs/tools/graphics/pstoedit/default.nix
+++ b/pkgs/tools/graphics/pstoedit/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   outputs = [ "out" "dev" ];
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ zlib ghostscript imagemagick plotutils gd libjpeg libwebp ]
-  ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     libiconv ApplicationServices
   ]);
 
diff --git a/pkgs/tools/graphics/quirc/default.nix b/pkgs/tools/graphics/quirc/default.nix
index b2d1e795155a..43144ce037b0 100644
--- a/pkgs/tools/graphics/quirc/default.nix
+++ b/pkgs/tools/graphics/quirc/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
       url = "https://github.com/dlbeer/quirc/commit/257c6c94d99960819ecabf72199e5822f60a3bc5.patch?full_index=1";
       hash = "sha256-WLQK7vy34VmgJzppTnRjAcZoSGWVaXQSaGq9An8W0rw=";
     })
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # Disable building of linux-only demos on darwin systems
     ./0001-Don-t-build-demos.patch
   ];
@@ -50,7 +50,7 @@ stdenv.mkDerivation (finalAttrs: {
   postInstall = ''
     # don't install static library
     rm $out/lib/libquirc.a
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Set absolute install name to avoid the need for DYLD_LIBRARY_PATH
     dylib=$out/lib/libquirc.${finalAttrs.version}.dylib
     ${stdenv.cc.targetPrefix}install_name_tool -id "$dylib" "$dylib"
diff --git a/pkgs/tools/graphics/realesrgan-ncnn-vulkan/default.nix b/pkgs/tools/graphics/realesrgan-ncnn-vulkan/default.nix
index 59c2753011d3..450e36e6d3ee 100644
--- a/pkgs/tools/graphics/realesrgan-ncnn-vulkan/default.nix
+++ b/pkgs/tools/graphics/realesrgan-ncnn-vulkan/default.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
     cp -r ${models}/models $out/share
   '';
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf $out/bin/realesrgan-ncnn-vulkan --add-needed libvulkan.so
   '';
 
diff --git a/pkgs/tools/graphics/texture-synthesis/default.nix b/pkgs/tools/graphics/texture-synthesis/default.nix
index 7122450587a7..cd7d437c4d41 100644
--- a/pkgs/tools/graphics/texture-synthesis/default.nix
+++ b/pkgs/tools/graphics/texture-synthesis/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   # tests fail for unknown reasons on aarch64-darwin
-  doCheck = !(stdenv.isDarwin && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64);
 
   meta = with lib; {
     description = "Example-based texture synthesis written in Rust";
diff --git a/pkgs/tools/graphics/vips/default.nix b/pkgs/tools/graphics/vips/default.nix
index 129b33427bc3..c8f41167f865 100644
--- a/pkgs/tools/graphics/vips/default.nix
+++ b/pkgs/tools/graphics/vips/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation (finalAttrs: {
   pname = "vips";
   version = "8.15.3";
 
-  outputs = [ "bin" "out" "man" "dev" ] ++ lib.optionals (!stdenv.isDarwin) [ "devdoc" ];
+  outputs = [ "bin" "out" "man" "dev" ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ "devdoc" ];
 
   src = fetchFromGitHub {
     owner = "libvips";
@@ -64,7 +64,7 @@ stdenv.mkDerivation (finalAttrs: {
     ninja
     docbook-xsl-nons
     gobject-introspection
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     gtk-doc
   ];
 
@@ -96,7 +96,7 @@ stdenv.mkDerivation (finalAttrs: {
     cgif
     libarchive
     libhwy
-  ] ++ lib.optionals stdenv.isDarwin [ ApplicationServices Foundation ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ ApplicationServices Foundation ];
 
   # Required by .pc file
   propagatedBuildInputs = [
@@ -107,7 +107,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-Dpdfium=disabled"
     "-Dnifti=disabled"
   ]
-  ++ lib.optional (!stdenv.isDarwin) "-Dgtk_doc=true"
+  ++ lib.optional (!stdenv.hostPlatform.isDarwin) "-Dgtk_doc=true"
   ++ lib.optional (imagemagick == null) "-Dmagick=disabled"
   ;
 
diff --git a/pkgs/tools/graphics/vulkan-caps-viewer/default.nix b/pkgs/tools/graphics/vulkan-caps-viewer/default.nix
index 0c60a11db88b..da52cb1b6ea9 100644
--- a/pkgs/tools/graphics/vulkan-caps-viewer/default.nix
+++ b/pkgs/tools/graphics/vulkan-caps-viewer/default.nix
@@ -58,6 +58,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ pedrohlc ];
     changelog = "https://github.com/SaschaWillems/VulkanCapsViewer/releases/tag/${version}";
     # never built on aarch64-darwin, x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/graphics/vulkan-tools/default.nix b/pkgs/tools/graphics/vulkan-tools/default.nix
index 759841d02e66..c21ece529459 100644
--- a/pkgs/tools/graphics/vulkan-tools/default.nix
+++ b/pkgs/tools/graphics/vulkan-tools/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     vulkan-headers
     vulkan-loader
     vulkan-volk
-  ] ++ lib.optionals (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     libffi
     libX11
     libXau
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
     wayland
     wayland-protocols
     wayland-scanner
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     moltenvk
     moltenvk.dev
     AppKit
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
     "-DGLSLANG_INSTALL_DIR=${glslang}"
     # Hide dev warnings that are useless for packaging
     "-Wno-dev"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DMOLTENVK_REPO_ROOT=${moltenvk}/share/vulkan/icd.d"
     # Don’t build the cube demo because it requires `ibtool`, which is not available in nixpkgs.
     "-DBUILD_CUBE=OFF"
diff --git a/pkgs/tools/graphics/waifu2x-converter-cpp/default.nix b/pkgs/tools/graphics/waifu2x-converter-cpp/default.nix
index dd2c15c8fda4..cf150a59c8db 100644
--- a/pkgs/tools/graphics/waifu2x-converter-cpp/default.nix
+++ b/pkgs/tools/graphics/waifu2x-converter-cpp/default.nix
@@ -22,12 +22,12 @@ stdenv.mkDerivation rec {
   buildInputs = [
     opencv4
   ] ++ lib.optional cudaSupport cudatoolkit
-    ++ lib.optional stdenv.isDarwin OpenCL
-    ++ lib.optionals stdenv.isLinux [ ocl-icd opencl-headers ];
+    ++ lib.optional stdenv.hostPlatform.isDarwin OpenCL
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ ocl-icd opencl-headers ];
 
   nativeBuildInputs = [ cmake makeWrapper ];
 
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/waifu2x-converter-cpp --prefix LD_LIBRARY_PATH : "${ocl-icd}/lib"
   '';
 
diff --git a/pkgs/tools/graphics/wgpu-utils/default.nix b/pkgs/tools/graphics/wgpu-utils/default.nix
index 236cf3f7a7fa..51d4c018e459 100644
--- a/pkgs/tools/graphics/wgpu-utils/default.nix
+++ b/pkgs/tools/graphics/wgpu-utils/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
     makeWrapper
   ];
 
-  buildInputs = lib.optional stdenv.isDarwin QuartzCore;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin QuartzCore;
 
   # Tests fail, as the Nix sandbox doesn't provide an appropriate adapter (e.g. Vulkan).
   doCheck = false;
diff --git a/pkgs/tools/graphics/zbar/default.nix b/pkgs/tools/graphics/zbar/default.nix
index c3429069d203..951e6b26bf11 100644
--- a/pkgs/tools/graphics/zbar/default.nix
+++ b/pkgs/tools/graphics/zbar/default.nix
@@ -16,7 +16,7 @@
 , docbook_xsl
 , autoreconfHook
 , dbus
-, enableVideo ? stdenv.isLinux
+, enableVideo ? stdenv.hostPlatform.isLinux
   # The implementation is buggy and produces an error like
   # Name Error (Connection ":1.4380" is not allowed to own the service "org.linuxtv.Zbar" due to security policies in the configuration file)
   # for every scanned code.
@@ -70,7 +70,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     imagemagickBig
     libintl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     Foundation
   ] ++ lib.optionals enableDbus [
@@ -89,7 +89,7 @@ stdenv.mkDerivation rec {
     python3
   ];
 
-  checkInputs = lib.optionals stdenv.isDarwin [
+  checkInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     argp-standalone
   ];
 
@@ -119,7 +119,7 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
 
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export NIX_LDFLAGS="$NIX_LDFLAGS -largp"
   '';
 
diff --git a/pkgs/tools/misc/abduco/default.nix b/pkgs/tools/misc/abduco/default.nix
index 011f186bbbe2..eef5fe0df344 100644
--- a/pkgs/tools/misc/abduco/default.nix
+++ b/pkgs/tools/misc/abduco/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
     "cp ${writeText "config.def.h" conf} config.def.h";
 
   installFlags = [ "install-completion" ];
-  CFLAGS = lib.optionalString stdenv.isDarwin "-D_DARWIN_C_SOURCE";
+  CFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-D_DARWIN_C_SOURCE";
 
   patches = [
     # https://github.com/martanne/abduco/pull/22
diff --git a/pkgs/tools/misc/aescrypt/default.nix b/pkgs/tools/misc/aescrypt/default.nix
index 67739f575169..2517724c8c39 100644
--- a/pkgs/tools/misc/aescrypt/default.nix
+++ b/pkgs/tools/misc/aescrypt/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-4uGS0LReq5dI7+Wel7ZWzFXx+utZWi93q4TUSw7AhNI=";
   };
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-liconv";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-liconv";
 
   preBuild = ''
     substituteInPlace src/Makefile --replace "CC=gcc" "CC?=gcc"
diff --git a/pkgs/tools/misc/aichat/default.nix b/pkgs/tools/misc/aichat/default.nix
index 6aed08780987..bea3026ea606 100644
--- a/pkgs/tools/misc/aichat/default.nix
+++ b/pkgs/tools/misc/aichat/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
     installShellFiles
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
diff --git a/pkgs/tools/misc/aoc-cli/default.nix b/pkgs/tools/misc/aoc-cli/default.nix
index 4fec5647e04d..693f87389e1b 100644
--- a/pkgs/tools/misc/aoc-cli/default.nix
+++ b/pkgs/tools/misc/aoc-cli/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optional stdenv.isDarwin Security;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   cargoHash = "sha256-EluP4N3UBQeEKVdHTs4O0THXji+nAyE52nGKsxA3AA4=";
 
diff --git a/pkgs/tools/misc/apkeep/default.nix b/pkgs/tools/misc/apkeep/default.nix
index 084997765868..8e31710ff324 100644
--- a/pkgs/tools/misc/apkeep/default.nix
+++ b/pkgs/tools/misc/apkeep/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     SystemConfiguration
   ];
diff --git a/pkgs/tools/misc/archi/default.nix b/pkgs/tools/misc/archi/default.nix
index e933edf3642b..7afbce58c106 100644
--- a/pkgs/tools/misc/archi/default.nix
+++ b/pkgs/tools/misc/archi/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
     autoPatchelfHook
   ];
 
-  sourceRoot = if stdenv.isDarwin then "." else null;
+  sourceRoot = if stdenv.hostPlatform.isDarwin then "." else null;
 
   installPhase =
     if stdenv.hostPlatform.system == "x86_64-linux" then
diff --git a/pkgs/tools/misc/asciinema-agg/default.nix b/pkgs/tools/misc/asciinema-agg/default.nix
index 238a5c8af073..e7f7334de3e0 100644
--- a/pkgs/tools/misc/asciinema-agg/default.nix
+++ b/pkgs/tools/misc/asciinema-agg/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/tools/misc/barman/default.nix b/pkgs/tools/misc/barman/default.nix
index 20bdb11d0179..7e1eea61d0a9 100644
--- a/pkgs/tools/misc/barman/default.nix
+++ b/pkgs/tools/misc/barman/default.nix
@@ -48,7 +48,7 @@ python3Packages.buildPythonApplication rec {
       # Assertion error
       "test_help_output"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # FsOperationFailed
       "test_get_file_mode"
     ];
diff --git a/pkgs/tools/misc/bat-extras/default.nix b/pkgs/tools/misc/bat-extras/default.nix
index 1c3a805367f2..0891499b2261 100644
--- a/pkgs/tools/misc/bat-extras/default.nix
+++ b/pkgs/tools/misc/bat-extras/default.nix
@@ -55,7 +55,7 @@ let
 
     # Run the library tests as they don't have external dependencies
     doCheck = true;
-    nativeCheckInputs = [ bash fish zsh ] ++ (lib.optionals stdenv.isDarwin [ getconf ]);
+    nativeCheckInputs = [ bash fish zsh ] ++ (lib.optionals stdenv.hostPlatform.isDarwin [ getconf ]);
     checkPhase = ''
       runHook preCheck
       # test list repeats suites. Unique them
@@ -112,7 +112,7 @@ let
       dontBuild = true; # we've already built
 
       doCheck = true;
-      nativeCheckInputs = [ bat bash fish zsh ] ++ (lib.optionals stdenv.isDarwin [ getconf ]);
+      nativeCheckInputs = [ bat bash fish zsh ] ++ (lib.optionals stdenv.hostPlatform.isDarwin [ getconf ]);
       checkPhase = ''
         runHook preCheck
         bash ./test.sh --compiled --suite ${name}
@@ -144,7 +144,7 @@ in
 {
   batdiff = script "batdiff" ([ less coreutils gitMinimal ] ++ optionalDep withDelta delta);
   batgrep = script "batgrep" [ less coreutils ripgrep ];
-  batman = script "batman" (lib.optionals stdenv.isLinux [ util-linux ]);
+  batman = script "batman" (lib.optionals stdenv.hostPlatform.isLinux [ util-linux ]);
   batpipe = script "batpipe" [ less ];
   batwatch = script "batwatch" ([ less coreutils ] ++ optionalDep withEntr entr);
   prettybat = script "prettybat" ([]
diff --git a/pkgs/tools/misc/bibutils/default.nix b/pkgs/tools/misc/bibutils/default.nix
index ea5360549b20..c6dd28777b4d 100644
--- a/pkgs/tools/misc/bibutils/default.nix
+++ b/pkgs/tools/misc/bibutils/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-bgKK7x6Kaz5azvCYWEp7tocI81z+dAEbNBwR/qXktcM=";
   };
 
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace lib/Makefile.dynamic \
       --replace '-Wl,-soname,$(SONAME)' ""
   '';
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
   checkTarget = "test";
-  preCheck = lib.optionalString stdenv.isDarwin ''
+  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export DYLD_LIBRARY_PATH=`pwd`/lib
   '';
 
diff --git a/pkgs/tools/misc/bmon/default.nix b/pkgs/tools/misc/bmon/default.nix
index 237eb7476da5..a123a3380f1b 100644
--- a/pkgs/tools/misc/bmon/default.nix
+++ b/pkgs/tools/misc/bmon/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
 
-  buildInputs = [ ncurses libconfuse ] ++ lib.optional stdenv.isLinux libnl;
+  buildInputs = [ ncurses libconfuse ] ++ lib.optional stdenv.hostPlatform.isLinux libnl;
 
   preConfigure = ''
     # Must be an absolute path
diff --git a/pkgs/tools/misc/boxxy/default.nix b/pkgs/tools/misc/boxxy/default.nix
index b2596746f7df..845ccf532b8e 100644
--- a/pkgs/tools/misc/boxxy/default.nix
+++ b/pkgs/tools/misc/boxxy/default.nix
@@ -37,7 +37,7 @@ rustPlatform.buildRustPackage rec {
     license = licenses.mit;
     maintainers = with maintainers; [ dit7ya figsoda ];
     platforms = platforms.linux;
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
     mainProgram = "boxxy";
   };
 }
diff --git a/pkgs/tools/misc/brltty/default.nix b/pkgs/tools/misc/brltty/default.nix
index f2de104c5825..745f39b4363a 100644
--- a/pkgs/tools/misc/brltty/default.nix
+++ b/pkgs/tools/misc/brltty/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, fetchurl, pkg-config, python3, bluez
 , tcl, acl, kmod, coreutils, shadow, util-linux
-, alsaSupport ? stdenv.isLinux, alsa-lib
+, alsaSupport ? stdenv.hostPlatform.isLinux, alsa-lib
 , systemdSupport ? lib.meta.availableOn stdenv.hostPlatform systemd, systemd
 }:
 
diff --git a/pkgs/tools/misc/broot/default.nix b/pkgs/tools/misc/broot/default.nix
index 9097f4e335ec..17c28c8f3bdd 100644
--- a/pkgs/tools/misc/broot/default.nix
+++ b/pkgs/tools/misc/broot/default.nix
@@ -13,8 +13,8 @@
 , xorg
 , zlib
 , buildPackages
-, withClipboard ? !stdenv.isDarwin
-, withTrash ? !stdenv.isDarwin
+, withClipboard ? !stdenv.hostPlatform.isDarwin
+, withTrash ? !stdenv.hostPlatform.isDarwin
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
     pkg-config
   ];
 
-  buildInputs = [ libgit2 oniguruma xorg.libxcb ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ libgit2 oniguruma xorg.libxcb ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Foundation
     libiconv
     Security
diff --git a/pkgs/tools/misc/chafa/default.nix b/pkgs/tools/misc/chafa/default.nix
index 6272fdc8914d..a6a376abd930 100644
--- a/pkgs/tools/misc/chafa/default.nix
+++ b/pkgs/tools/misc/chafa/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
                       ];
 
   buildInputs = [ glib imagemagick ]
-    ++ lib.optional stdenv.isDarwin Foundation;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Foundation;
 
   patches = [ ./xmlcatalog_patch.patch ];
 
diff --git a/pkgs/tools/misc/checkpwn/default.nix b/pkgs/tools/misc/checkpwn/default.nix
index 994fecc6c4db..e89e6b880097 100644
--- a/pkgs/tools/misc/checkpwn/default.nix
+++ b/pkgs/tools/misc/checkpwn/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-G+QWnGf+Zp94EHVnYM3Q/iEhEQMU2O/c4i5ya/dY7K4=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/misc/ckb-next/default.nix b/pkgs/tools/misc/ckb-next/default.nix
index ca0f6705b9fe..6c077b227274 100644
--- a/pkgs/tools/misc/ckb-next/default.nix
+++ b/pkgs/tools/misc/ckb-next/default.nix
@@ -1,6 +1,6 @@
 { lib, wrapQtAppsHook, fetchFromGitHub, substituteAll, udev, stdenv
 , pkg-config, qtbase, cmake, zlib, kmod, libXdmcp, qttools, qtx11extras, libdbusmenu, gnused
-, withPulseaudio ? stdenv.isLinux, libpulseaudio, quazip
+, withPulseaudio ? stdenv.hostPlatform.isLinux, libpulseaudio, quazip
 }:
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/tools/misc/clipboard-jh/default.nix b/pkgs/tools/misc/clipboard-jh/default.nix
index 78ba8e6c3ba7..9b0369e8fad2 100644
--- a/pkgs/tools/misc/clipboard-jh/default.nix
+++ b/pkgs/tools/misc/clipboard-jh/default.nix
@@ -34,13 +34,13 @@ stdenv.mkDerivation rec {
     wayland-scanner
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     libffi
     wayland-protocols
     wayland
     xorg.libX11
     alsa-lib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
   ];
 
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
     "-DINSTALL_PREFIX=${placeholder "out"}"
   ];
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf $out/bin/cb --add-rpath $out/lib
   '';
 
diff --git a/pkgs/tools/misc/cod/default.nix b/pkgs/tools/misc/cod/default.nix
index eba78d6c2263..08ea681eedb8 100644
--- a/pkgs/tools/misc/cod/default.nix
+++ b/pkgs/tools/misc/cod/default.nix
@@ -33,7 +33,7 @@ buildGoModule rec {
     homepage = "https://github.com/dim-an/cod/";
     license = licenses.asl20;
     maintainers = with maintainers; [ SuperSandro2000 ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "cod";
   };
 }
diff --git a/pkgs/tools/misc/code-minimap/default.nix b/pkgs/tools/misc/code-minimap/default.nix
index db58ede25abf..2bc64b425e5f 100644
--- a/pkgs/tools/misc/code-minimap/default.nix
+++ b/pkgs/tools/misc/code-minimap/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-5/UgEzkJw9XDgtS1jKyWh5ijTp3L+UQLuE5CXcyIgTs=";
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   meta = with lib; {
     description = "High performance code minimap render";
diff --git a/pkgs/tools/misc/coinlive/default.nix b/pkgs/tools/misc/coinlive/default.nix
index 2db008551c8b..564f19f85b97 100644
--- a/pkgs/tools/misc/coinlive/default.nix
+++ b/pkgs/tools/misc/coinlive/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/tools/misc/convbin/default.nix b/pkgs/tools/misc/convbin/default.nix
index 96164902dc2c..7d61c684f9cb 100644
--- a/pkgs/tools/misc/convbin/default.nix
+++ b/pkgs/tools/misc/convbin/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-zCRM62xwaPaN8+cg+CeaqK/9hKpZmSBBeUOQqAvQGYw=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile --replace "-flto" ""
   '';
 
diff --git a/pkgs/tools/misc/coreutils/default.nix b/pkgs/tools/misc/coreutils/default.nix
index d9fbd4459f04..5bbc3b9581ee 100644
--- a/pkgs/tools/misc/coreutils/default.nix
+++ b/pkgs/tools/misc/coreutils/default.nix
@@ -98,7 +98,7 @@ stdenv.mkDerivation rec {
       echo "int main() { return 77; }" > gnulib-tests/test-parse-datetime.c
       echo "int main() { return 77; }" > gnulib-tests/test-getlogin.c
     ''
-  ])) + (optionalString stdenv.isAarch64 ''
+  ])) + (optionalString stdenv.hostPlatform.isAarch64 ''
     # Sometimes fails: https://github.com/NixOS/nixpkgs/pull/143097#issuecomment-954462584
     sed '2i echo Skipping cut huge range test && exit 77' -i ./tests/cut/cut-huge-range.sh
   '');
@@ -135,7 +135,7 @@ stdenv.mkDerivation rec {
     ++ optional withPrefix "--program-prefix=g"
     # the shipped configure script doesn't enable nls, but using autoreconfHook
     # does so which breaks the build
-    ++ optional stdenv.isDarwin "--disable-nls"
+    ++ optional stdenv.hostPlatform.isDarwin "--disable-nls"
     ++ optionals (isCross && stdenv.hostPlatform.libc == "glibc") [
       # TODO(19b98110126fde7cbb1127af7e3fe1568eacad3d): Needed for fstatfs() I
       # don't know why it is not properly detected cross building with glibc.
@@ -154,7 +154,7 @@ stdenv.mkDerivation rec {
   # With non-standard storeDir: https://github.com/NixOS/nix/issues/512
   doCheck = (!isCross)
     && (stdenv.hostPlatform.libc == "glibc" || stdenv.hostPlatform.libc == "musl")
-    && !stdenv.isAarch32;
+    && !stdenv.hostPlatform.isAarch32;
 
   # Prevents attempts of running 'help2man' on cross-built binaries.
   PERL = if isCross then "missing" else null;
diff --git a/pkgs/tools/misc/cutecom/default.nix b/pkgs/tools/misc/cutecom/default.nix
index e36bd288b2ae..9ed7ef6295e6 100644
--- a/pkgs/tools/misc/cutecom/default.nix
+++ b/pkgs/tools/misc/cutecom/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ qtserialport ];
   nativeBuildInputs = [ cmake wrapQtAppsHook ];
 
-  postInstall = if stdenv.isDarwin then ''
+  postInstall = if stdenv.hostPlatform.isDarwin then ''
     mkdir -p $out/Applications
   '' else ''
     cd ..
diff --git a/pkgs/tools/misc/daktilo/default.nix b/pkgs/tools/misc/daktilo/default.nix
index e557862b6713..3d9b4161e299 100644
--- a/pkgs/tools/misc/daktilo/default.nix
+++ b/pkgs/tools/misc/daktilo/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
     xorg.libX11
     xorg.libXi
     xorg.libXtst
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/misc/dialogbox/default.nix b/pkgs/tools/misc/dialogbox/default.nix
index 7012f9d69ad5..e6849fa84310 100644
--- a/pkgs/tools/misc/dialogbox/default.nix
+++ b/pkgs/tools/misc/dialogbox/default.nix
@@ -37,7 +37,7 @@ mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/martynets/dialogbox/";
     description = "Qt-based scriptable engine providing GUI dialog boxes";
     license = licenses.gpl3Plus;
diff --git a/pkgs/tools/misc/didyoumean/default.nix b/pkgs/tools/misc/didyoumean/default.nix
index 362673a5ca82..94efc1af33db 100644
--- a/pkgs/tools/misc/didyoumean/default.nix
+++ b/pkgs/tools/misc/didyoumean/default.nix
@@ -25,14 +25,14 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [
     installShellFiles
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     libxcb
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
   ];
 
diff --git a/pkgs/tools/misc/diffoscope/default.nix b/pkgs/tools/misc/diffoscope/default.nix
index f76b7a766e77..96d8976922bd 100644
--- a/pkgs/tools/misc/diffoscope/default.nix
+++ b/pkgs/tools/misc/diffoscope/default.nix
@@ -245,7 +245,7 @@ python.pkgs.buildPythonApplication rec {
         # docx2txt, nixpkgs packages another project named the same, which does not work
       ])
       # oggvideotools is broken on Darwin, please put it back when it will be fixed?
-      ++ lib.optionals stdenv.isLinux [ oggvideotools ]
+      ++ lib.optionals stdenv.hostPlatform.isLinux [ oggvideotools ]
       # This doesn't work on aarch64-darwin
       ++ lib.optionals (stdenv.hostPlatform.system != "aarch64-darwin") [ gnumeric ]
     )
@@ -272,7 +272,7 @@ python.pkgs.buildPythonApplication rec {
       # Fails because it fails to determine llvm version
       "test_item3_deflate_llvm_bitcode"
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Disable flaky tests on Darwin
       "test_non_unicode_filename"
       "test_listing"
@@ -288,7 +288,7 @@ python.pkgs.buildPythonApplication rec {
       "test_libmix_differences"
     ];
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     "tests/comparators/test_git.py"
     "tests/comparators/test_java.py"
     "tests/comparators/test_uimage.py"
diff --git a/pkgs/tools/misc/dijo/default.nix b/pkgs/tools/misc/dijo/default.nix
index 1a73a4d84faf..344faf84f60b 100644
--- a/pkgs/tools/misc/dijo/default.nix
+++ b/pkgs/tools/misc/dijo/default.nix
@@ -3,7 +3,7 @@
 rustPlatform.buildRustPackage rec {
   pname = "dijo";
   version = "0.2.7";
-  buildInputs = [ ncurses ] ++ lib.optional stdenv.isDarwin CoreServices;
+  buildInputs = [ ncurses ] ++ lib.optional stdenv.hostPlatform.isDarwin CoreServices;
   src = fetchFromGitHub {
     owner = "NerdyPepper";
     repo = "dijo";
diff --git a/pkgs/tools/misc/diskonaut/default.nix b/pkgs/tools/misc/diskonaut/default.nix
index d9738b398b04..fa9d7f00a83b 100644
--- a/pkgs/tools/misc/diskonaut/default.nix
+++ b/pkgs/tools/misc/diskonaut/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-S/ne3iTEnlA3AqcPg3geLzV4bYVuYPjMCITSVJFnWYI=";
 
   # 1 passed; 44 failed https://hydra.nixos.org/build/148943783/nixlog/1
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Terminal disk space navigator";
diff --git a/pkgs/tools/misc/diskus/default.nix b/pkgs/tools/misc/diskus/default.nix
index fd37b2b9c99b..683da47d6af6 100644
--- a/pkgs/tools/misc/diskus/default.nix
+++ b/pkgs/tools/misc/diskus/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
     sha256 = "sha256-SKd2CU0F2iR4bSHntu2VKvZyjjf2XJeXJG6XS/fIBMU=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   cargoHash = "sha256-qNXv6Z9sKl7rol78UTOSRFML/JCGfOJMGOdt49KHD50=";
 
diff --git a/pkgs/tools/misc/docui/default.nix b/pkgs/tools/misc/docui/default.nix
index d226c2fc8f00..a42e57ebc5ae 100644
--- a/pkgs/tools/misc/docui/default.nix
+++ b/pkgs/tools/misc/docui/default.nix
@@ -18,7 +18,7 @@ buildGoModule rec {
     homepage = "https://github.com/skanehira/docui";
     license = licenses.mit;
     maintainers = with maintainers; [ aethelz ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "docui";
   };
 }
diff --git a/pkgs/tools/misc/dtool/default.nix b/pkgs/tools/misc/dtool/default.nix
index 8b4349dbb59a..0e62d91cdbc9 100644
--- a/pkgs/tools/misc/dtool/default.nix
+++ b/pkgs/tools/misc/dtool/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-o5Xvc0tnoUgfp5k7EqVuEH9Zyo3C+A+mVqPhMtZCYKw=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
   # FIXME: remove patch when upstream version of rustc-serialize is updated
diff --git a/pkgs/tools/misc/dua/default.nix b/pkgs/tools/misc/dua/default.nix
index 130a21d0709a..aed4b2d53c88 100644
--- a/pkgs/tools/misc/dua/default.nix
+++ b/pkgs/tools/misc/dua/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-bqWYXcry+mCUNgYS+7+MWfiV+u+3oZZg1o3Q6Mac+vE=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Foundation
   ];
 
diff --git a/pkgs/tools/misc/duc/default.nix b/pkgs/tools/misc/duc/default.nix
index 56fe697528ab..8ef860f32e05 100644
--- a/pkgs/tools/misc/duc/default.nix
+++ b/pkgs/tools/misc/duc/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config
 , tokyocabinet, ncurses
 , cairo ? null, pango ? null
-, enableCairo ? stdenv.isLinux
+, enableCairo ? stdenv.hostPlatform.isLinux
 }:
 
 assert enableCairo -> cairo != null && pango != null;
diff --git a/pkgs/tools/misc/dvtm/dvtm.nix b/pkgs/tools/misc/dvtm/dvtm.nix
index aedac2d61f98..f4e36f271bab 100644
--- a/pkgs/tools/misc/dvtm/dvtm.nix
+++ b/pkgs/tools/misc/dvtm/dvtm.nix
@@ -3,7 +3,7 @@ stdenv.mkDerivation {
 
   inherit pname version src patches;
 
-  CFLAGS = lib.optionalString stdenv.isDarwin "-D_DARWIN_C_SOURCE";
+  CFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-D_DARWIN_C_SOURCE";
 
   postPatch = lib.optionalString (customConfig != null) ''
     cp ${builtins.toFile "config.h" customConfig} ./config.h
diff --git a/pkgs/tools/misc/ea/default.nix b/pkgs/tools/misc/ea/default.nix
index d45f3b431dcd..7ea3b5c11ca8 100644
--- a/pkgs/tools/misc/ea/default.nix
+++ b/pkgs/tools/misc/ea/default.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ];
 
diff --git a/pkgs/tools/misc/edid-generator/default.nix b/pkgs/tools/misc/edid-generator/default.nix
index fc7f01226972..e3855fc76f2f 100644
--- a/pkgs/tools/misc/edid-generator/default.nix
+++ b/pkgs/tools/misc/edid-generator/default.nix
@@ -74,6 +74,6 @@ stdenv.mkDerivation {
     license = lib.licenses.gpl3;
     maintainers = with lib.maintainers; [ flokli nazarewk ];
     platforms = lib.platforms.all;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/edid-generator.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/edid-generator.x86_64-darwin
   };
 }
diff --git a/pkgs/tools/misc/edk2-uefi-shell/default.nix b/pkgs/tools/misc/edk2-uefi-shell/default.nix
index 0ec010472645..723833ab45cf 100644
--- a/pkgs/tools/misc/edk2-uefi-shell/default.nix
+++ b/pkgs/tools/misc/edk2-uefi-shell/default.nix
@@ -38,6 +38,6 @@ edk2.mkDerivation "ShellPkg/ShellPkg.dsc" (finalAttrs: {
     description = "UEFI Shell from Tianocore EFI development kit";
     homepage = "https://github.com/tianocore/tianocore.github.io/wiki/ShellPkg";
     maintainers = with lib.maintainers; [ LunNova mjoerg ];
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 })
diff --git a/pkgs/tools/misc/eludris/default.nix b/pkgs/tools/misc/eludris/default.nix
index e0762d179ec0..756324c1a8b2 100644
--- a/pkgs/tools/misc/eludris/default.nix
+++ b/pkgs/tools/misc/eludris/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoBuildFlags = [ "-p eludris" ];
   cargoTestFlags = [ "-p eludris" ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
   nativeBuildInputs = [ pkg-config ];
 
   meta = with lib; {
diff --git a/pkgs/tools/misc/envchain/default.nix b/pkgs/tools/misc/envchain/default.nix
index 984dd60082e3..22a007536399 100644
--- a/pkgs/tools/misc/envchain/default.nix
+++ b/pkgs/tools/misc/envchain/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ libsecret readline ]
-    ++ lib.optionals stdenv.isDarwin [ libedit ncurses Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libedit ncurses Security ];
 
   makeFlags = [ "DESTDIR=$(out)" ];
 
diff --git a/pkgs/tools/misc/expect/default.nix b/pkgs/tools/misc/expect/default.nix
index 102120a8604e..ffbfb3a64141 100644
--- a/pkgs/tools/misc/expect/default.nix
+++ b/pkgs/tools/misc/expect/default.nix
@@ -42,7 +42,7 @@ tcl.mkTclDerivation rec {
 
   postInstall = ''
     tclWrapperArgs+=(--prefix PATH : ${lib.makeBinPath [ tcl ]})
-    ${lib.optionalString stdenv.isDarwin "tclWrapperArgs+=(--prefix DYLD_LIBRARY_PATH : $out/lib/expect${version})"}
+    ${lib.optionalString stdenv.hostPlatform.isDarwin "tclWrapperArgs+=(--prefix DYLD_LIBRARY_PATH : $out/lib/expect${version})"}
   '';
 
   outputs = [ "out" "dev" ];
diff --git a/pkgs/tools/misc/fclones/default.nix b/pkgs/tools/misc/fclones/default.nix
index deb97aced8ef..f7a70b966acf 100644
--- a/pkgs/tools/misc/fclones/default.nix
+++ b/pkgs/tools/misc/fclones/default.nix
@@ -18,12 +18,12 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-mEgFfg8I+JJuUEvj+sia2aL3BVg3HteQorZ2EOiLo64=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.AppKit
   ];
 
   # device::test_physical_device_name test fails on Darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkFlags = [
     # ofborg sometimes fails with "Resource temporarily unavailable"
diff --git a/pkgs/tools/misc/fclones/gui.nix b/pkgs/tools/misc/fclones/gui.nix
index 8dff1eec4928..bf010cfa798e 100644
--- a/pkgs/tools/misc/fclones/gui.nix
+++ b/pkgs/tools/misc/fclones/gui.nix
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage rec {
     gdk-pixbuf
     gtk4
     libadwaita
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.IOKit
   ];
 
diff --git a/pkgs/tools/misc/fcp/default.nix b/pkgs/tools/misc/fcp/default.nix
index 814d764a7999..9d3a7c4074fe 100644
--- a/pkgs/tools/misc/fcp/default.nix
+++ b/pkgs/tools/misc/fcp/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ expect ];
 
   # character_device fails with "File name too long" on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postPatch = ''
     patchShebangs tests/*.exp
diff --git a/pkgs/tools/misc/fend/default.nix b/pkgs/tools/misc/fend/default.nix
index 860906fdd555..aa1fda03a455 100644
--- a/pkgs/tools/misc/fend/default.nix
+++ b/pkgs/tools/misc/fend/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-R5p7f+eEMDs0rs+45XNJC4znrJ9BrPBv5+dvMgoHFdA=";
 
   nativeBuildInputs = [ pandoc installShellFiles pkg-config copyDesktopItems ];
-  buildInputs = [ pkg-config openssl ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = [ pkg-config openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   postBuild = ''
     patchShebangs --build ./documentation/build.sh
diff --git a/pkgs/tools/misc/ffsend/default.nix b/pkgs/tools/misc/ffsend/default.nix
index 91fcaf4ac449..c24650d4ffbc 100644
--- a/pkgs/tools/misc/ffsend/default.nix
+++ b/pkgs/tools/misc/ffsend/default.nix
@@ -2,13 +2,13 @@
 , installShellFiles
 , Security, AppKit
 
-, x11Support ? stdenv.isLinux || stdenv.hostPlatform.isBSD
+, x11Support ? stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isBSD
 , xclip ? null, xsel ? null
 , preferXsel ? false # if true and xsel is non-null, use it instead of xclip
 }:
 
 let
-  usesX11 = stdenv.isLinux || stdenv.isBSD;
+  usesX11 = stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isBSD;
 in
 
 assert (x11Support && usesX11) -> xclip != null || xsel != null;
@@ -58,9 +58,9 @@ rustPlatform.buildRustPackage rec {
   ];
 
   nativeBuildInputs = [ installShellFiles ]
-    ++ lib.optionals stdenv.isLinux [ pkg-config ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
   buildInputs =
-    if stdenv.isDarwin then [ Security AppKit ]
+    if stdenv.hostPlatform.isDarwin then [ Security AppKit ]
     else [ openssl ];
 
   preBuild = lib.optionalString (x11Support && usesX11) (
diff --git a/pkgs/tools/misc/findutils/default.nix b/pkgs/tools/misc/findutils/default.nix
index 41432415a2c6..239aa98b04e0 100644
--- a/pkgs/tools/misc/findutils/default.nix
+++ b/pkgs/tools/misc/findutils/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
     "--localstatedir=/var/cache"
   ];
 
-  CFLAGS = lib.optionals stdenv.isDarwin [
+  CFLAGS = lib.optionals stdenv.hostPlatform.isDarwin [
     # TODO: Revisit upstream issue https://savannah.gnu.org/bugs/?59972
     # https://github.com/Homebrew/homebrew-core/pull/69761#issuecomment-770268478
     "-D__nonnull\\(params\\)="
diff --git a/pkgs/tools/misc/flashrom/default.nix b/pkgs/tools/misc/flashrom/default.nix
index 190841582a4f..744876ffb62e 100644
--- a/pkgs/tools/misc/flashrom/default.nix
+++ b/pkgs/tools/misc/flashrom/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config installShellFiles ];
   buildInputs = [ libftdi1 libusb1 ]
-    ++ lib.optionals (!stdenv.isDarwin) [ pciutils ]
+    ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ pciutils ]
     ++ lib.optional jlinkSupport libjaylink;
 
   postPatch = ''
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [ "PREFIX=$(out)" "libinstall" ]
     ++ lib.optional jlinkSupport "CONFIG_JLINK_SPI=yes"
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [ "CONFIG_INTERNAL_X86=no" "CONFIG_INTERNAL_DMI=no" "CONFIG_RAYER_SPI=no" ];
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [ "CONFIG_INTERNAL_X86=no" "CONFIG_INTERNAL_DMI=no" "CONFIG_RAYER_SPI=no" ];
 
   postInstall = ''
     install -Dm644 util/flashrom_udev.rules $out/lib/udev/rules.d/flashrom.rules
diff --git a/pkgs/tools/misc/flitter/default.nix b/pkgs/tools/misc/flitter/default.nix
index b32329efd9eb..01f231db4475 100644
--- a/pkgs/tools/misc/flitter/default.nix
+++ b/pkgs/tools/misc/flitter/default.nix
@@ -34,6 +34,6 @@ rustPlatform.buildRustPackage rec {
     homepage = "https://github.com/alexozer/flitter";
     platforms = platforms.unix;
     mainProgram = "flitter";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/misc/flowgger/default.nix b/pkgs/tools/misc/flowgger/default.nix
index 6783e9dc80cf..1cff8298ca9b 100644
--- a/pkgs/tools/misc/flowgger/default.nix
+++ b/pkgs/tools/misc/flowgger/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
   ];
 
   buildInputs = [ openssl ]
-    ++ lib.optional stdenv.isDarwin CoreServices;
+    ++ lib.optional stdenv.hostPlatform.isDarwin CoreServices;
 
   checkFlags = [
     # test failed
diff --git a/pkgs/tools/misc/fondu/default.nix b/pkgs/tools/misc/fondu/default.nix
index 9435d0487b76..fe6ab396d139 100644
--- a/pkgs/tools/misc/fondu/default.nix
+++ b/pkgs/tools/misc/fondu/default.nix
@@ -9,11 +9,11 @@ stdenv.mkDerivation rec {
     sha256 = "152prqad9jszjmm4wwqrq83zk13ypsz09n02nrk1gg0fcxfm7fr2";
   };
 
-  postConfigure = lib.optionalString stdenv.isDarwin ''
+  postConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile --replace /System/Library/Frameworks/CoreServices.framework/CoreServices "-framework CoreServices"
   '';
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   makeFlags = [ "DESTDIR=$(out)" ];
 
diff --git a/pkgs/tools/misc/fontforge/default.nix b/pkgs/tools/misc/fontforge/default.nix
index fe626a417ab3..495a3dad8330 100644
--- a/pkgs/tools/misc/fontforge/default.nix
+++ b/pkgs/tools/misc/fontforge/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
   '';
 
   # do not use x87's 80-bit arithmetic, rouding errors result in very different font binaries
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isi686 "-msse2 -mfpmath=sse";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isi686 "-msse2 -mfpmath=sse";
 
   nativeBuildInputs = [ pkg-config cmake ];
   buildInputs = [
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
   ]
     ++ lib.optionals withSpiro [ libspiro ]
     ++ lib.optionals withGUI [ gtk3 cairo pango ]
-    ++ lib.optionals stdenv.isDarwin [ Carbon Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Carbon Cocoa ];
 
   cmakeFlags = [ "-DCMAKE_BUILD_WITH_INSTALL_RPATH=ON" ]
     ++ lib.optional (!withSpiro) "-DENABLE_LIBSPIRO=OFF"
diff --git a/pkgs/tools/misc/freshfetch/default.nix b/pkgs/tools/misc/freshfetch/default.nix
index 40119d9f0b3d..ccbaa1f1bfa8 100644
--- a/pkgs/tools/misc/freshfetch/default.nix
+++ b/pkgs/tools/misc/freshfetch/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
   # freshfetch depends on rust nightly features
   RUSTC_BOOTSTRAP = 1;
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     CoreFoundation
     DiskArbitration
diff --git a/pkgs/tools/misc/fsearch/default.nix b/pkgs/tools/misc/fsearch/default.nix
index 43902b5d99ca..453e200ea609 100644
--- a/pkgs/tools/misc/fsearch/default.nix
+++ b/pkgs/tools/misc/fsearch/default.nix
@@ -52,6 +52,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ artturin ];
     platforms = platforms.unix;
     mainProgram = "fsearch";
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/fsearch.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/fsearch.x86_64-darwin
   };
 }
diff --git a/pkgs/tools/misc/fselect/default.nix b/pkgs/tools/misc/fselect/default.nix
index feeb9f3a3d21..95c5b4af0520 100644
--- a/pkgs/tools/misc/fselect/default.nix
+++ b/pkgs/tools/misc/fselect/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-eqzqIyQHHklxo3aojCvY06TUPSqChoz6yZ2zzpgRNqs=";
 
   nativeBuildInputs = [ installShellFiles ];
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   postInstall = ''
     installManPage docs/fselect.1
diff --git a/pkgs/tools/misc/fw/default.nix b/pkgs/tools/misc/fw/default.nix
index 5483bc872d4a..7855747c5999 100644
--- a/pkgs/tools/misc/fw/default.nix
+++ b/pkgs/tools/misc/fw/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
     libgit2
     openssl
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/tools/misc/fwup/default.nix b/pkgs/tools/misc/fwup/default.nix
index 904aca205214..c7226904af62 100644
--- a/pkgs/tools/misc/fwup/default.nix
+++ b/pkgs/tools/misc/fwup/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
     libsodium
     xz
     zlib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     DiskArbitration
   ];
 
@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
     xdelta
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Configurable embedded Linux firmware update creator and runner";
diff --git a/pkgs/tools/misc/geekbench/6.nix b/pkgs/tools/misc/geekbench/6.nix
index 2aca571e2cf9..2f1d2d0b6be1 100644
--- a/pkgs/tools/misc/geekbench/6.nix
+++ b/pkgs/tools/misc/geekbench/6.nix
@@ -21,7 +21,7 @@ let
       hash = "sha256-fbf01qa9wx3k9j8AEqv38fAM3F9tZOcnpH/wa/9rawQ=";
     };
   };
-  geekbench_avx2 = lib.optionalString stdenv.isx86_64 "geekbench_avx2";
+  geekbench_avx2 = lib.optionalString stdenv.hostPlatform.isx86_64 "geekbench_avx2";
 in
 stdenv.mkDerivation {
   inherit version;
diff --git a/pkgs/tools/misc/getoptions/default.nix b/pkgs/tools/misc/getoptions/default.nix
index 2ff3d4c64403..d3dcde29dcd6 100644
--- a/pkgs/tools/misc/getoptions/default.nix
+++ b/pkgs/tools/misc/getoptions/default.nix
@@ -16,14 +16,14 @@ stdenvNoCC.mkDerivation rec {
   doCheck = true;
 
   nativeCheckInputs = [ shellspec ksh mksh yash zsh ]
-    ++ lib.lists.optional (!stdenvNoCC.isDarwin) busybox-sandbox-shell;
+    ++ lib.lists.optional (!stdenvNoCC.hostPlatform.isDarwin) busybox-sandbox-shell;
 
   # Disable checks against yash, since shellspec seems to be broken for yash>=2.54
   # (see: https://github.com/NixOS/nixpkgs/pull/218264#pullrequestreview-1434402054)
   preCheck = ''
     sed -i '/shellspec -s posh/d' Makefile
     sed -i '/shellspec -s yash/d' Makefile
-    '' + lib.strings.optionalString stdenvNoCC.isDarwin ''
+    '' + lib.strings.optionalString stdenvNoCC.hostPlatform.isDarwin ''
     sed -i "/shellspec -s 'busybox ash'/d" Makefile
   '';
 
diff --git a/pkgs/tools/misc/gh-cal/default.nix b/pkgs/tools/misc/gh-cal/default.nix
index e14acf372a79..2e4d05b1c274 100644
--- a/pkgs/tools/misc/gh-cal/default.nix
+++ b/pkgs/tools/misc/gh-cal/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-73gqk0DjhaLGIEP5VQQlubPomxHQyg4RnY5XTgE7msQ=";
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "GitHub contributions calender terminal viewer";
diff --git a/pkgs/tools/misc/ghostie/default.nix b/pkgs/tools/misc/ghostie/default.nix
index 0a4e1cb695e0..e6a47a557738 100644
--- a/pkgs/tools/misc/ghostie/default.nix
+++ b/pkgs/tools/misc/ghostie/default.nix
@@ -33,14 +33,14 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
   ];
 
   # 4 out of 5 tests are notification tests which do not work in nix builds
   doCheck = false;
 
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export HOME=$(mktemp -d)
   '';
 
@@ -50,7 +50,7 @@ rustPlatform.buildRustPackage rec {
     changelog = "https://github.com/attriaayush/ghostie/releases/tag/v${version}";
     license = licenses.mit;
     maintainers = with maintainers; [ matthiasbeyer ];
-    broken = stdenv.isx86_64 && stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.isDarwin;
     mainProgram = "ghostie";
   };
 }
diff --git a/pkgs/tools/misc/gigalixir/default.nix b/pkgs/tools/misc/gigalixir/default.nix
index 101b5f6a9346..8628fdfcffb3 100644
--- a/pkgs/tools/misc/gigalixir/default.nix
+++ b/pkgs/tools/misc/gigalixir/default.nix
@@ -55,7 +55,7 @@ python3.pkgs.buildPythonApplication rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Gigalixir Command-Line Interface";
     homepage = "https://github.com/gigalixir/gigalixir-cli";
     license = licenses.mit;
diff --git a/pkgs/tools/misc/gitrs/default.nix b/pkgs/tools/misc/gitrs/default.nix
index f6a49fe850ce..99139437b4a7 100644
--- a/pkgs/tools/misc/gitrs/default.nix
+++ b/pkgs/tools/misc/gitrs/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
   ];
 
   buildInputs = [ openssl.dev ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
diff --git a/pkgs/tools/misc/goaccess/default.nix b/pkgs/tools/misc/goaccess/default.nix
index 9fd40e7fc334..81cf43feb659 100644
--- a/pkgs/tools/misc/goaccess/default.nix
+++ b/pkgs/tools/misc/goaccess/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     ncurses
     openssl
-  ] ++ lib.optionals withGeolocation [ libmaxminddb ] ++ lib.optionals stdenv.isDarwin [ gettext ];
+  ] ++ lib.optionals withGeolocation [ libmaxminddb ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ gettext ];
 
   configureFlags = [
     "--enable-utf8"
diff --git a/pkgs/tools/misc/goose/default.nix b/pkgs/tools/misc/goose/default.nix
index b329eeea9691..058408ca9f2c 100644
--- a/pkgs/tools/misc/goose/default.nix
+++ b/pkgs/tools/misc/goose/default.nix
@@ -40,7 +40,7 @@ buildGoModule rec {
     "-skip=TestClickUpDown|TestClickHouseFirstThree|TestLockModeAdvisorySession|TestDialectStore|TestGoMigrationStats|TestPostgresSessionLocker"
   ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Database migration tool which supports SQL migrations and Go functions";
diff --git a/pkgs/tools/misc/gotify-desktop/default.nix b/pkgs/tools/misc/gotify-desktop/default.nix
index d1b67d927cf7..e184c38d5eb7 100644
--- a/pkgs/tools/misc/gotify-desktop/default.nix
+++ b/pkgs/tools/misc/gotify-desktop/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
     homepage = "https://github.com/desbma/gotify-desktop";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ bryanasdev000 genofire ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "gotify-desktop";
   };
 }
diff --git a/pkgs/tools/misc/grex/default.nix b/pkgs/tools/misc/grex/default.nix
index 2697c6b3febe..f3263303f96d 100644
--- a/pkgs/tools/misc/grex/default.nix
+++ b/pkgs/tools/misc/grex/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-ZRE1vKgi0/UtSe2bdN0BLdtDfAauTfwcqOcl3y63fAA=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   doInstallCheck = true;
   installCheckPhase = ''
diff --git a/pkgs/tools/misc/grit/default.nix b/pkgs/tools/misc/grit/default.nix
index ca68506faab7..d9cffca07f0c 100644
--- a/pkgs/tools/misc/grit/default.nix
+++ b/pkgs/tools/misc/grit/default.nix
@@ -14,7 +14,7 @@ buildGoModule rec {
   vendorHash = "sha256-iMMkjJ5dnlr0oSCifBQPWkInQBCp1bh23s+BcKzDNCg=";
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Multitree-based personal task manager";
     homepage = "https://github.com/climech/grit";
     license = licenses.mit;
diff --git a/pkgs/tools/misc/grub4dos/default.nix b/pkgs/tools/misc/grub4dos/default.nix
index 8b78c29defe7..b18298e37b66 100644
--- a/pkgs/tools/misc/grub4dos/default.nix
+++ b/pkgs/tools/misc/grub4dos/default.nix
@@ -1,8 +1,8 @@
 { lib, stdenv, fetchFromGitHub, nasm }:
 
 let arch =
-  if stdenv.isi686 then "i386"
-  else if stdenv.isx86_64 then "x86_64"
+  if stdenv.hostPlatform.isi686 then "i386"
+  else if stdenv.hostPlatform.isx86_64 then "x86_64"
   else throw "Unknown architecture";
 in stdenv.mkDerivation {
   pname = "grub4dos";
diff --git a/pkgs/tools/misc/halp/default.nix b/pkgs/tools/misc/halp/default.nix
index e036336eb10c..2a8b869861cd 100644
--- a/pkgs/tools/misc/halp/default.nix
+++ b/pkgs/tools/misc/halp/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
     installShellFiles
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
@@ -38,7 +38,7 @@ rustPlatform.buildRustPackage rec {
   ];
 
   # tests are failing on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkFlags = [
     # requires internet access
diff --git a/pkgs/tools/misc/handlr/default.nix b/pkgs/tools/misc/handlr/default.nix
index b2245eafe534..612331138572 100644
--- a/pkgs/tools/misc/handlr/default.nix
+++ b/pkgs/tools/misc/handlr/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-30fSOzWq1CoIabPWGWndi/SaCN/ckxjlbtzuwV8rk6M=";
 
   nativeBuildInputs = [ installShellFiles shared-mime-info ];
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   preCheck = ''
     export HOME=$TEMPDIR
diff --git a/pkgs/tools/misc/hdf4/default.nix b/pkgs/tools/misc/hdf4/default.nix
index 2636cb71717b..6553c1c70d65 100644
--- a/pkgs/tools/misc/hdf4/default.nix
+++ b/pkgs/tools/misc/hdf4/default.nix
@@ -5,7 +5,7 @@
 , fixDarwinDylibNames
 , cmake
 , libjpeg
-, uselibtirpc ? stdenv.isLinux
+, uselibtirpc ? stdenv.hostPlatform.isLinux
 , libtirpc
 , zlib
 , szipSupport ? false
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     cmake
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
   ] ++ lib.optional fortranSupport gfortran;
 
@@ -104,7 +104,7 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
 
-  excludedTests = lib.optionals stdenv.isDarwin [
+  excludedTests = lib.optionals stdenv.hostPlatform.isDarwin [
     "MFHDF_TEST-hdftest"
     "MFHDF_TEST-hdftest-shared"
     "HDP-dumpsds-18"
diff --git a/pkgs/tools/misc/hdf5/default.nix b/pkgs/tools/misc/hdf5/default.nix
index 226143c44be6..80f7c151bf95 100644
--- a/pkgs/tools/misc/hdf5/default.nix
+++ b/pkgs/tools/misc/hdf5/default.nix
@@ -71,7 +71,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-DHDF5_INSTALL_CMAKE_DIR=${placeholder "dev"}/lib/cmake"
     "-DBUILD_STATIC_LIBS=${lib.boolToString enableStatic}"
-  ] ++ lib.optional stdenv.isDarwin "-DHDF5_BUILD_WITH_INSTALL_NAME=ON"
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "-DHDF5_BUILD_WITH_INSTALL_NAME=ON"
     ++ lib.optional cppSupport "-DHDF5_BUILD_CPP_LIB=ON"
     ++ lib.optional fortranSupport "-DHDF5_BUILD_FORTRAN=ON"
     ++ lib.optional szipSupport "-DHDF5_ENABLE_SZIP_SUPPORT=ON"
@@ -82,7 +82,7 @@ stdenv.mkDerivation rec {
     ++ lib.optionals threadsafe [ "-DDHDF5_ENABLE_THREADSAFE:BOOL=ON" "-DHDF5_BUILD_HL_LIB=OFF" ]
     # broken in nixpkgs since around 1.14.3 -> 1.14.4.3
     # https://github.com/HDFGroup/hdf5/issues/4208#issuecomment-2098698567
-    ++ lib.optional (stdenv.isDarwin && stdenv.isx86_64) "-DHDF5_ENABLE_NONSTANDARD_FEATURE_FLOAT16=OFF"
+    ++ lib.optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) "-DHDF5_ENABLE_NONSTANDARD_FEATURE_FLOAT16=OFF"
   ;
 
   postInstall = ''
diff --git a/pkgs/tools/misc/hdfview/default.nix b/pkgs/tools/misc/hdfview/default.nix
index bbc6f512be7d..83597d45004e 100644
--- a/pkgs/tools/misc/hdfview/default.nix
+++ b/pkgs/tools/misc/hdfview/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
 
   buildPhase =
     let
-      arch = if stdenv.isx86_64 then "x86_64" else "aarch64";
+      arch = if stdenv.hostPlatform.isx86_64 then "x86_64" else "aarch64";
     in
     ''
       runHook preBuild
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
 
   installPhase = ''
     runHook preInstall
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     mkdir -p $out/bin $out/lib
     cp -a build/dist/HDFView/bin/HDFView $out/bin/
     cp -a build/dist/HDFView/lib/app $out/lib/
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
 
     mkdir -p $out/share/applications $out/share/icons/hicolor/32x32/apps
     cp src/HDFView.png $out/share/icons/hicolor/32x32/apps/
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     cp -a build/dist/HDFView.app $out/Applications/
   '' + ''
diff --git a/pkgs/tools/misc/heimdall/default.nix b/pkgs/tools/misc/heimdall/default.nix
index ce56a4f4057b..d750bdb131c6 100644
--- a/pkgs/tools/misc/heimdall/default.nix
+++ b/pkgs/tools/misc/heimdall/default.nix
@@ -27,11 +27,11 @@ mkDerivation rec {
   preConfigure = ''
     # Give ownership of the Galaxy S USB device to the logged in user.
     substituteInPlace heimdall/60-heimdall.rules --replace 'MODE="0666"' 'TAG+="uaccess"'
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace libpit/CMakeLists.txt --replace "-std=gnu++11" ""
   '';
 
-  installPhase = lib.optionalString (stdenv.isDarwin && enableGUI) ''
+  installPhase = lib.optionalString (stdenv.hostPlatform.isDarwin && enableGUI) ''
     mkdir -p $out/Applications
     mv bin/heimdall-frontend.app $out/Applications/heimdall-frontend.app
     wrapQtApp $out/Applications/heimdall-frontend.app/Contents/MacOS/heimdall-frontend
@@ -44,7 +44,7 @@ mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "http://www.glassechidna.com.au/products/heimdall/";
     description = "Cross-platform tool suite to flash firmware onto Samsung Galaxy S devices";
     license = licenses.mit;
diff --git a/pkgs/tools/misc/hidrd/default.nix b/pkgs/tools/misc/hidrd/default.nix
index 5ce3e969f276..d3a8a4012433 100644
--- a/pkgs/tools/misc/hidrd/default.nix
+++ b/pkgs/tools/misc/hidrd/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ pacien ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/hidrd.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/hidrd.x86_64-darwin
     mainProgram = "hidrd-convert";
   };
 }
diff --git a/pkgs/tools/misc/hiksink/default.nix b/pkgs/tools/misc/hiksink/default.nix
index def3f4776949..77e74e8116f7 100644
--- a/pkgs/tools/misc/hiksink/default.nix
+++ b/pkgs/tools/misc/hiksink/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/tools/misc/hoard/default.nix b/pkgs/tools/misc/hoard/default.nix
index 4bdf7b7127b8..1972c9c79386 100644
--- a/pkgs/tools/misc/hoard/default.nix
+++ b/pkgs/tools/misc/hoard/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/misc/hsd/default.nix b/pkgs/tools/misc/hsd/default.nix
index 44100e15283c..d1f41a72a1c2 100644
--- a/pkgs/tools/misc/hsd/default.nix
+++ b/pkgs/tools/misc/hsd/default.nix
@@ -22,7 +22,7 @@ buildNpmPackage rec {
 
   nativeBuildInputs = [
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
   ];
 
diff --git a/pkgs/tools/misc/hyperfine/default.nix b/pkgs/tools/misc/hyperfine/default.nix
index 16de5fa76f3d..e4922824d729 100644
--- a/pkgs/tools/misc/hyperfine/default.nix
+++ b/pkgs/tools/misc/hyperfine/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-E2y/hQNcpW6b/ZJBlsp+2RDH2OgpX4kbn36aBHA5X6U=";
 
   nativeBuildInputs = [ installShellFiles ];
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   postInstall = ''
     installManPage doc/hyperfine.1
diff --git a/pkgs/tools/misc/iay/default.nix b/pkgs/tools/misc/iay/default.nix
index 1ef3d332e75d..5973ed258b59 100644
--- a/pkgs/tools/misc/iay/default.nix
+++ b/pkgs/tools/misc/iay/default.nix
@@ -28,14 +28,14 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
   ]
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Cocoa
     Foundation
     Security
   ];
 
-  NIX_LDFLAGS = lib.optionals stdenv.isDarwin [ "-framework" "AppKit" ];
+  NIX_LDFLAGS = lib.optionals stdenv.hostPlatform.isDarwin [ "-framework" "AppKit" ];
 
   meta = with lib; {
     description = "Minimalistic, blazing-fast, and extendable prompt for bash and zsh";
diff --git a/pkgs/tools/misc/idutils/default.nix b/pkgs/tools/misc/idutils/default.nix
index cbdf1b761049..d065800b458f 100644
--- a/pkgs/tools/misc/idutils/default.nix
+++ b/pkgs/tools/misc/idutils/default.nix
@@ -16,15 +16,15 @@ stdenv.mkDerivation rec {
     ./bootstrap --force --gnulib-srcdir=${gnulib} --skip-po --bootstrap-sync --no-git
     '';
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     emacs
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
   nativeBuildInputs = [ gnulib autoconf bison automake gettext gperf texinfo perl rsync ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   patches = [ ./nix-mapping.patch ];
 
diff --git a/pkgs/tools/misc/inav-blackbox-tools/default.nix b/pkgs/tools/misc/inav-blackbox-tools/default.nix
index 43524f6a3fe2..228035108a81 100644
--- a/pkgs/tools/misc/inav-blackbox-tools/default.nix
+++ b/pkgs/tools/misc/inav-blackbox-tools/default.nix
@@ -30,6 +30,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Only;
     maintainers = with maintainers; [ expipiplus1 ];
     platforms = platforms.all;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/inav-blackbox-tools.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/inav-blackbox-tools.x86_64-darwin
   };
 }
diff --git a/pkgs/tools/misc/intermodal/default.nix b/pkgs/tools/misc/intermodal/default.nix
index 4d6868d5d364..b4b7d7807cb4 100644
--- a/pkgs/tools/misc/intermodal/default.nix
+++ b/pkgs/tools/misc/intermodal/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-k34psGOs6G+B/msmLSDHLNxnjO1yyE4OY6aQU8bt+is=";
 
   # include_hidden test tries to use `chflags` on darwin
-  checkFlags = lib.optionals stdenv.isDarwin [ "--skip=subcommand::torrent::create::tests::include_hidden" ];
+  checkFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "--skip=subcommand::torrent::create::tests::include_hidden" ];
 
   nativeBuildInputs = [ installShellFiles ];
 
diff --git a/pkgs/tools/misc/jdupes/default.nix b/pkgs/tools/misc/jdupes/default.nix
index 9c6988846990..6a4b5c3c393c 100644
--- a/pkgs/tools/misc/jdupes/default.nix
+++ b/pkgs/tools/misc/jdupes/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   makeFlags =
     [ "PREFIX=${placeholder "out"}" ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       "ENABLE_DEDUPE=1"
       "STATIC_DEDUPE_H=1"
     ]
diff --git a/pkgs/tools/misc/jsonwatch/default.nix b/pkgs/tools/misc/jsonwatch/default.nix
index 451089dc185e..c40e91c87c32 100644
--- a/pkgs/tools/misc/jsonwatch/default.nix
+++ b/pkgs/tools/misc/jsonwatch/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-Gjb7v3kz11iOml3Ykxhy43KNxzaprgMbb5DpPNChLTc=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
@@ -35,7 +35,7 @@ rustPlatform.buildRustPackage rec {
     license = licenses.mit;
     maintainers = with maintainers; [ fab ];
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
     mainProgram = "jsonwatch";
   };
 }
diff --git a/pkgs/tools/misc/krapslog/default.nix b/pkgs/tools/misc/krapslog/default.nix
index 5448fa942763..f4f1410ec512 100644
--- a/pkgs/tools/misc/krapslog/default.nix
+++ b/pkgs/tools/misc/krapslog/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-5jhEcwOdzLqzxQsEBqo4d5ecsg/vhiKuVjGYIwFzihE=";
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   meta = with lib; {
     description = "Visualize a log file with sparklines";
diff --git a/pkgs/tools/misc/lbdb/default.nix b/pkgs/tools/misc/lbdb/default.nix
index 20ea8beaaa83..cd1f8d0c4861 100644
--- a/pkgs/tools/misc/lbdb/default.nix
+++ b/pkgs/tools/misc/lbdb/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [ perl' ]
-    ++ lib.optional (!stdenv.isDarwin) bsd-finger
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) bsd-finger
     ++ lib.optional withAbook abook
     ++ lib.optional withGnupg gnupg
     ++ lib.optional withGoobook goobook
diff --git a/pkgs/tools/misc/leanify/default.nix b/pkgs/tools/misc/leanify/default.nix
index f0006ff7f183..81f6205986df 100644
--- a/pkgs/tools/misc/leanify/default.nix
+++ b/pkgs/tools/misc/leanify/default.nix
@@ -15,14 +15,14 @@ stdenv.mkDerivation rec {
     hash = "sha256-fLazKCQnOT3bN3Kz25Q80RLk54EU5U6HCf6kPLcXn9c=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile \
       --replace-fail "-flto" "" \
       --replace-fail "lib/LZMA/Alloc.o" "lib/LZMA/CpuArch.o lib/LZMA/Alloc.o" \
       --replace-quiet "-Werror" ""
   '';
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   doCheck = true;
 
diff --git a/pkgs/tools/misc/lesspipe/default.nix b/pkgs/tools/misc/lesspipe/default.nix
index b2c310bc5f40..8fd4689aaeac 100644
--- a/pkgs/tools/misc/lesspipe/default.nix
+++ b/pkgs/tools/misc/lesspipe/default.nix
@@ -74,7 +74,7 @@ stdenv.mkDerivation rec {
           "mdcat" "pandoc" "docx2txt" "libreoffice" "pptx2md" "mdcat" "xlscat" "odt2txt" "wvText" "antiword" "catdoc"
           "broken_catppt" "sxw2txt" "groff" "mandoc" "unrtf" "dvi2tty" "pod2text" "perldoc" "h5dump" "ncdump" "matdump"
           "djvutxt" "openssl" "gpg" "plistutil" "plutil" "id3v2" "csvlook" "jq" "zlib-flate" "lessfilter"
-        ] ++ lib.optional (stdenv.isDarwin || stdenv.isFreeBSD) [
+        ] ++ lib.optional (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isFreeBSD) [
           # resholve only identifies this on darwin/bsd
           # call site is guarded by || so it's safe to leave dynamic
           "locale"
diff --git a/pkgs/tools/misc/lighthouse-steamvr/default.nix b/pkgs/tools/misc/lighthouse-steamvr/default.nix
index 4ddd33ff1872..1898bfc7b295 100644
--- a/pkgs/tools/misc/lighthouse-steamvr/default.nix
+++ b/pkgs/tools/misc/lighthouse-steamvr/default.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [ dbus ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "VR Lighthouse power state management";
     homepage = "https://github.com/ShayBox/Lighthouse";
     license = licenses.mit;
diff --git a/pkgs/tools/misc/livedl/default.nix b/pkgs/tools/misc/livedl/default.nix
index 6db500695933..9a3b4c3fd1f6 100644
--- a/pkgs/tools/misc/livedl/default.nix
+++ b/pkgs/tools/misc/livedl/default.nix
@@ -22,7 +22,7 @@ buildGoModule rec {
     license = licenses.mit;
     maintainers = with maintainers; [ wakira ];
     platforms = platforms.linux ++ platforms.darwin;
-    broken = stdenv.isDarwin; # build fails with go > 1.17
+    broken = stdenv.hostPlatform.isDarwin; # build fails with go > 1.17
     mainProgram = "livedl";
   };
 }
diff --git a/pkgs/tools/misc/lorri/default.nix b/pkgs/tools/misc/lorri/default.nix
index 001efe6563b8..6ba07b3d874e 100644
--- a/pkgs/tools/misc/lorri/default.nix
+++ b/pkgs/tools/misc/lorri/default.nix
@@ -38,7 +38,7 @@ in (rustPlatform.buildRustPackage rec {
   RUN_TIME_CLOSURE = pkgs.callPackage ./runtime.nix { };
 
   nativeBuildInputs = [ rustPackages.rustfmt ];
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices Security ];
 
   # copy the docs to the $man and $doc outputs
   postInstall = ''
diff --git a/pkgs/tools/misc/macchina/default.nix b/pkgs/tools/misc/macchina/default.nix
index 036d500f6b65..d5b4343362a6 100644
--- a/pkgs/tools/misc/macchina/default.nix
+++ b/pkgs/tools/misc/macchina/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
     installShellFiles
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.DisplayServices
   ];
diff --git a/pkgs/tools/misc/marlin-calc/default.nix b/pkgs/tools/misc/marlin-calc/default.nix
index dc8ff4221009..ec8e90631b54 100644
--- a/pkgs/tools/misc/marlin-calc/default.nix
+++ b/pkgs/tools/misc/marlin-calc/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation {
     license = licenses.gpl3;
     maintainers = with maintainers; [ gebner ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/marlin-calc.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/marlin-calc.x86_64-darwin
     mainProgram = "marlin-calc";
   };
 }
diff --git a/pkgs/tools/misc/memtest86+/default.nix b/pkgs/tools/misc/memtest86+/default.nix
index 72b74039f780..d7dc5606a647 100644
--- a/pkgs/tools/misc/memtest86+/default.nix
+++ b/pkgs/tools/misc/memtest86+/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation (finalAttrs: {
   passthru.efi = "${finalAttrs.finalPackage}/memtest.efi";
 
   preBuild = ''
-    cd ${if stdenv.isi686 then "build32" else "build64"}
+    cd ${if stdenv.hostPlatform.isi686 then "build32" else "build64"}
   '';
 
   installPhase = ''
diff --git a/pkgs/tools/misc/minicom/default.nix b/pkgs/tools/misc/minicom/default.nix
index 50043a132b14..89653c26d6a0 100644
--- a/pkgs/tools/misc/minicom/default.nix
+++ b/pkgs/tools/misc/minicom/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-+fKvHrApDXm94LItXv+xSDIE5zD7rTY5IeNSuzQglpg=";
   };
 
-  buildInputs = [ ncurses ] ++ lib.optionals stdenv.isDarwin [ libiconv IOKit ];
+  buildInputs = [ ncurses ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv IOKit ];
 
   nativeBuildInputs = [ autoreconfHook makeWrapper pkg-config ];
 
diff --git a/pkgs/tools/misc/miniserve/default.nix b/pkgs/tools/misc/miniserve/default.nix
index 745d18715ba3..7822fd6d8d20 100644
--- a/pkgs/tools/misc/miniserve/default.nix
+++ b/pkgs/tools/misc/miniserve/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
     installShellFiles
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/tools/misc/mise/default.nix b/pkgs/tools/misc/mise/default.nix
index 473d7a308f23..ace598e053b7 100644
--- a/pkgs/tools/misc/mise/default.nix
+++ b/pkgs/tools/misc/mise/default.nix
@@ -35,7 +35,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-jGqaGbue+AEK0YjhHMlm84XBgA20p8Um03TjctjXVz0=";
 
   nativeBuildInputs = [ installShellFiles pkg-config ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
   postPatch = ''
     patchShebangs --build \
diff --git a/pkgs/tools/misc/mktorrent/default.nix b/pkgs/tools/misc/mktorrent/default.nix
index 74f449969a66..3fb3f7390fe6 100644
--- a/pkgs/tools/misc/mktorrent/default.nix
+++ b/pkgs/tools/misc/mktorrent/default.nix
@@ -12,8 +12,8 @@ stdenv.mkDerivation rec {
   };
 
   makeFlags = [ "USE_PTHREADS=1" "USE_OPENSSL=1" "USE_LONG_OPTIONS=1" ]
-    ++ lib.optional stdenv.isi686 "USE_LARGE_FILES=1"
-    ++ lib.optional stdenv.isLinux "CFLAGS=-lgcc_s";
+    ++ lib.optional stdenv.hostPlatform.isi686 "USE_LARGE_FILES=1"
+    ++ lib.optional stdenv.hostPlatform.isLinux "CFLAGS=-lgcc_s";
 
   installFlags = [ "PREFIX=${placeholder "out"}" ];
 
diff --git a/pkgs/tools/misc/moreutils/default.nix b/pkgs/tools/misc/moreutils/default.nix
index 694e9ac93ee1..e557a05f3062 100644
--- a/pkgs/tools/misc/moreutils/default.nix
+++ b/pkgs/tools/misc/moreutils/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ makeWrapper perl libxml2 libxslt docbook-xsl docbook_xml_dtd_44 ];
   buildInputs = [
     (perl.withPackages (p: [ p.IPCRun p.TimeDate p.TimeDuration ]))
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     cctools
   ];
 
diff --git a/pkgs/tools/misc/mpdscribble/default.nix b/pkgs/tools/misc/mpdscribble/default.nix
index e7baa6641ccf..c4e7ad591eb6 100644
--- a/pkgs/tools/misc/mpdscribble/default.nix
+++ b/pkgs/tools/misc/mpdscribble/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
     curl
     boost
     libgcrypt
-  ] ++ lib.optional stdenv.isLinux systemd;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux systemd;
 
   meta = with lib; {
     description = "MPD client which submits info about tracks being played to a scrobbler";
diff --git a/pkgs/tools/misc/mpy-utils/default.nix b/pkgs/tools/misc/mpy-utils/default.nix
index 0ee7701b730b..342b6875c204 100644
--- a/pkgs/tools/misc/mpy-utils/default.nix
+++ b/pkgs/tools/misc/mpy-utils/default.nix
@@ -16,6 +16,6 @@ buildPythonApplication rec {
     homepage = "https://github.com/nickzoic/mpy-utils";
     license = licenses.mit;
     maintainers = with maintainers; [ aciceri ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/misc/mynewt-newtmgr/default.nix b/pkgs/tools/misc/mynewt-newtmgr/default.nix
index 1ad1bb7ac1bb..d78c6304a1e3 100644
--- a/pkgs/tools/misc/mynewt-newtmgr/default.nix
+++ b/pkgs/tools/misc/mynewt-newtmgr/default.nix
@@ -34,6 +34,6 @@ buildGoModule rec {
     license = licenses.asl20;
     maintainers = with maintainers; [ bezmuth ];
     # never built on aarch64-darwin, x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/misc/nbench/default.nix b/pkgs/tools/misc/nbench/default.nix
index 44beea57fbb3..b8fa6abfbada 100644
--- a/pkgs/tools/misc/nbench/default.nix
+++ b/pkgs/tools/misc/nbench/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   prePatch = ''
     substituteInPlace nbench1.h --replace '"NNET.DAT"' "\"$out/NNET.DAT\""
     substituteInPlace sysspec.h --replace "malloc.h" "stdlib.h"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile --replace "-static" ""
   '';
 
diff --git a/pkgs/tools/misc/ncdu/default.nix b/pkgs/tools/misc/ncdu/default.nix
index 5209522d2529..abde0b0d79e1 100644
--- a/pkgs/tools/misc/ncdu/default.nix
+++ b/pkgs/tools/misc/ncdu/default.nix
@@ -5,7 +5,7 @@
 , zig
 , installShellFiles
 , testers
-, pie ? stdenv.isDarwin
+, pie ? stdenv.hostPlatform.isDarwin
 }:
 
 stdenv.mkDerivation (finalAttrs: {
diff --git a/pkgs/tools/misc/noti/default.nix b/pkgs/tools/misc/noti/default.nix
index 3401f74de937..1c33f4ff73d3 100644
--- a/pkgs/tools/misc/noti/default.nix
+++ b/pkgs/tools/misc/noti/default.nix
@@ -21,7 +21,7 @@ buildGoModule rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optional stdenv.isDarwin Cocoa;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Cocoa;
 
   ldflags = [
     "-s"
diff --git a/pkgs/tools/misc/ntfy/default.nix b/pkgs/tools/misc/ntfy/default.nix
index 54e232eafd9c..d28688c63399 100644
--- a/pkgs/tools/misc/ntfy/default.nix
+++ b/pkgs/tools/misc/ntfy/default.nix
@@ -3,12 +3,12 @@
 , python39
 , fetchFromGitHub
 , fetchpatch
-, withXmpp ? !stdenv.isDarwin
+, withXmpp ? !stdenv.hostPlatform.isDarwin
 , withMatrix ? true
 , withSlack ? true
 , withEmoji ? true
 , withPid ? true
-, withDbus ? stdenv.isLinux
+, withDbus ? stdenv.hostPlatform.isLinux
 }:
 
 let
diff --git a/pkgs/tools/misc/nurl/default.nix b/pkgs/tools/misc/nurl/default.nix
index e0af2ff638dd..752427cdb0e9 100644
--- a/pkgs/tools/misc/nurl/default.nix
+++ b/pkgs/tools/misc/nurl/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
     makeBinaryWrapper
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/misc/nvimpager/default.nix b/pkgs/tools/misc/nvimpager/default.nix
index 80900bf30ae8..364b825292f2 100644
--- a/pkgs/tools/misc/nvimpager/default.nix
+++ b/pkgs/tools/misc/nvimpager/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   # filter out one test that fails in the sandbox of nix or with neovim v0.10
   # or on macOS
   preCheck = ''
-    checkFlagsArray+=('BUSTED=busted --output TAP --exclude-tags=${"nix,v10" + lib.optionalString stdenv.isDarwin ",mac"}')
+    checkFlagsArray+=('BUSTED=busted --output TAP --exclude-tags=${"nix,v10" + lib.optionalString stdenv.hostPlatform.isDarwin ",mac"}')
   '';
 
   meta = with lib; {
diff --git a/pkgs/tools/misc/octofetch/default.nix b/pkgs/tools/misc/octofetch/default.nix
index f254e77ebdea..1218cb1f7b0f 100644
--- a/pkgs/tools/misc/octofetch/default.nix
+++ b/pkgs/tools/misc/octofetch/default.nix
@@ -22,8 +22,8 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     homepage = "https://github.com/azur1s/octofetch";
diff --git a/pkgs/tools/misc/oggvideotools/default.nix b/pkgs/tools/misc/oggvideotools/default.nix
index 13c13f086a29..004fb3579253 100644
--- a/pkgs/tools/misc/oggvideotools/default.nix
+++ b/pkgs/tools/misc/oggvideotools/default.nix
@@ -46,6 +46,6 @@ stdenv.mkDerivation rec {
     # Compilation error on Darwin:
     # error: invalid argument '--std=c++0x' not allowed with 'C'
     # make[2]: *** [src/libresample/CMakeFiles/resample.dir/build.make:76: src/libresample/CMakeFiles/resample.dir/filterkit.c.o] Error 1
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/misc/onefetch/default.nix b/pkgs/tools/misc/onefetch/default.nix
index 2436b68da434..2beca6a81501 100644
--- a/pkgs/tools/misc/onefetch/default.nix
+++ b/pkgs/tools/misc/onefetch/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ cmake installShellFiles pkg-config ];
 
   buildInputs = [ zstd ]
-    ++ lib.optionals stdenv.isDarwin [ CoreFoundation libresolv Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreFoundation libresolv Security ];
 
   nativeCheckInputs = [
     git
diff --git a/pkgs/tools/misc/opentelemetry-collector/contrib.nix b/pkgs/tools/misc/opentelemetry-collector/contrib.nix
index 017fd1a015d7..a2a0b255d008 100644
--- a/pkgs/tools/misc/opentelemetry-collector/contrib.nix
+++ b/pkgs/tools/misc/opentelemetry-collector/contrib.nix
@@ -30,7 +30,7 @@ buildGoModule rec {
   CGO_ENABLED = 0;
 
   # journalctl is required in-$PATH for the journald receiver tests.
-  nativeCheckInputs = lib.optionals stdenv.isLinux [ systemdMinimal ];
+  nativeCheckInputs = lib.optionals stdenv.hostPlatform.isLinux [ systemdMinimal ];
 
   # We don't inject the package into propagatedBuildInputs unless
   # asked to avoid hard-requiring a large package. For the journald
diff --git a/pkgs/tools/misc/ostree-rs-ext/default.nix b/pkgs/tools/misc/ostree-rs-ext/default.nix
index d7b09b65f7ae..ece63fe6768a 100644
--- a/pkgs/tools/misc/ostree-rs-ext/default.nix
+++ b/pkgs/tools/misc/ostree-rs-ext/default.nix
@@ -44,7 +44,7 @@ rustPlatform.buildRustPackage rec {
     openssl
     zlib
     ostree
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/tools/misc/otel-cli/default.nix b/pkgs/tools/misc/otel-cli/default.nix
index 09c248178244..b0c4e38c4c52 100644
--- a/pkgs/tools/misc/otel-cli/default.nix
+++ b/pkgs/tools/misc/otel-cli/default.nix
@@ -15,7 +15,7 @@ buildGoModule rec {
 
   preCheck = ''
     ln -s $GOPATH/bin/otel-cli .
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     substituteInPlace main_test.go \
       --replace-fail 'const minimumPath = `/bin:/usr/bin`' 'const minimumPath = `${lib.makeBinPath [ getent coreutils ]}`'
   '';
diff --git a/pkgs/tools/misc/otfcc/default.nix b/pkgs/tools/misc/otfcc/default.nix
index aa0d86253d77..d45c800464ab 100644
--- a/pkgs/tools/misc/otfcc/default.nix
+++ b/pkgs/tools/misc/otfcc/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
     ./move-makefiles.patch
   ];
 
-  buildFlags = lib.optionals stdenv.isAarch64 [ "config=release_arm" ];
+  buildFlags = lib.optionals stdenv.hostPlatform.isAarch64 [ "config=release_arm" ];
 
   installPhase = ''
     mkdir -p $out/bin
diff --git a/pkgs/tools/misc/owofetch/default.nix b/pkgs/tools/misc/owofetch/default.nix
index 22bbc4ba72fb..20d9cc160d7a 100644
--- a/pkgs/tools/misc/owofetch/default.nix
+++ b/pkgs/tools/misc/owofetch/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-rfN4QERs1H1G7ZZim//78vlxbYfU4Cx7SYYUz/QLKeU=";
 
-  buildInputs = lib.optionals stdenvNoCC.isDarwin [
+  buildInputs = lib.optionals stdenvNoCC.hostPlatform.isDarwin [
     Foundation
     DiskArbitration
   ];
diff --git a/pkgs/tools/misc/pazi/default.nix b/pkgs/tools/misc/pazi/default.nix
index de771e9e86a5..2ccabe628098 100644
--- a/pkgs/tools/misc/pazi/default.nix
+++ b/pkgs/tools/misc/pazi/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   cargoHash = "sha256-7ChHYcyzRPFkZ+zh9lBOHcOizDvJf2cp9ULoI7Ofmqk=";
 
diff --git a/pkgs/tools/misc/pfetch-rs/default.nix b/pkgs/tools/misc/pfetch-rs/default.nix
index 0a2e3c9ec38d..f86b71f72c7b 100644
--- a/pkgs/tools/misc/pfetch-rs/default.nix
+++ b/pkgs/tools/misc/pfetch-rs/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-/gYL32kUA4gKTGogMrOghQ3XYFjw3GsDhzynUC/OyXY=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.AppKit
     darwin.apple_sdk.frameworks.DisplayServices
   ];
diff --git a/pkgs/tools/misc/pgbadger/default.nix b/pkgs/tools/misc/pgbadger/default.nix
index 27c532e8144c..d25b4db9068f 100644
--- a/pkgs/tools/misc/pgbadger/default.nix
+++ b/pkgs/tools/misc/pgbadger/default.nix
@@ -32,7 +32,7 @@ buildPerlPackage rec {
   # pgbadger has too many `-Idir` flags on its shebang line on Darwin,
   # causing the build to fail when trying to generate the documentation.
   # Rewrite the -I flags in `use lib` form.
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang ./pgbadger
   '';
 
@@ -46,7 +46,7 @@ buildPerlPackage rec {
     TextCSV_XS
   ];
 
-  nativeBuildInputs = lib.optionals stdenv.isDarwin [ shortenPerlShebang ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ shortenPerlShebang ];
 
   nativeCheckInputs = [
     bzip2
diff --git a/pkgs/tools/misc/piston-cli/default.nix b/pkgs/tools/misc/piston-cli/default.nix
index 68519f2eb643..0309832787a4 100644
--- a/pkgs/tools/misc/piston-cli/default.nix
+++ b/pkgs/tools/misc/piston-cli/default.nix
@@ -27,7 +27,7 @@ python3Packages.buildPythonApplication rec {
   ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Piston api tool";
     homepage = "https://github.com/Shivansh-007/piston-cli";
     license = licenses.mit;
diff --git a/pkgs/tools/misc/powerline-rs/default.nix b/pkgs/tools/misc/powerline-rs/default.nix
index 53077c58848a..77506e95ba0a 100644
--- a/pkgs/tools/misc/powerline-rs/default.nix
+++ b/pkgs/tools/misc/powerline-rs/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-NAhLTrTshCm1QKGaOdD/YaqD6c3oYZwVBst8fvTlScQ=";
 
   nativeBuildInputs = [ pkg-config file perl cmake curl ];
-  buildInputs = [ openssl libssh2 libgit2 libzip ] ++ lib.optional stdenv.isDarwin Security;
+  buildInputs = [ openssl libssh2 libgit2 libzip ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   COMPLETION_OUT = "out";
   postInstall = ''
diff --git a/pkgs/tools/misc/pre-commit/default.nix b/pkgs/tools/misc/pre-commit/default.nix
index 0afa9180a47d..4901663d0d02 100644
--- a/pkgs/tools/misc/pre-commit/default.nix
+++ b/pkgs/tools/misc/pre-commit/default.nix
@@ -81,7 +81,7 @@ buildPythonApplication rec {
     "--forked"
   ];
 
-  preCheck = lib.optionalString (!(stdenv.isLinux && stdenv.isAarch64)) ''
+  preCheck = lib.optionalString (!(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64)) ''
     # Disable outline atomics for rust tests on aarch64-linux.
     export RUSTFLAGS="-Ctarget-feature=-outline-atomics"
   '' + ''
diff --git a/pkgs/tools/misc/qflipper/default.nix b/pkgs/tools/misc/qflipper/default.nix
index 7a344e9b0c43..5ad26ab739e7 100644
--- a/pkgs/tools/misc/qflipper/default.nix
+++ b/pkgs/tools/misc/qflipper/default.nix
@@ -62,7 +62,7 @@ mkDerivation {
     qtquickcontrols
     qtquickcontrols2
     qtgraphicaleffects
-  ] ++ lib.optionals (stdenv.isLinux) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux) [
     qtwayland
   ];
 
@@ -83,7 +83,7 @@ mkDerivation {
 
   postInstall = ''
     mkdir -p $out/bin
-    ${lib.optionalString stdenv.isDarwin ''
+    ${lib.optionalString stdenv.hostPlatform.isDarwin ''
     cp qFlipper.app/Contents/MacOS/qFlipper $out/bin
     ''}
     cp qFlipper-cli $out/bin
@@ -95,7 +95,7 @@ mkDerivation {
   passthru.updateScript = nix-update-script { };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Cross-platform desktop tool to manage your flipper device";
     homepage = "https://flipperzero.one/";
     license = licenses.gpl3Only;
diff --git a/pkgs/tools/misc/qrscan/default.nix b/pkgs/tools/misc/qrscan/default.nix
index 1ad4c526e752..479c6102818a 100644
--- a/pkgs/tools/misc/qrscan/default.nix
+++ b/pkgs/tools/misc/qrscan/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
     mainProgram = "qrscan";
     homepage = "https://github.com/sayanarijit/qrscan";
     license = licenses.mit;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = [ maintainers.sayanarijit ];
   };
 }
diff --git a/pkgs/tools/misc/rates/default.nix b/pkgs/tools/misc/rates/default.nix
index d121453bd7d9..c774721eeecc 100644
--- a/pkgs/tools/misc/rates/default.nix
+++ b/pkgs/tools/misc/rates/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-5EcTeMfa1GNp1q60qSgEi/I3298hXUD1Vc1K55XGW4I=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "CLI tool that brings currency exchange rates right into your terminal";
diff --git a/pkgs/tools/misc/remote-exec/default.nix b/pkgs/tools/misc/remote-exec/default.nix
index edf581b183ce..e9edaacd6a27 100644
--- a/pkgs/tools/misc/remote-exec/default.nix
+++ b/pkgs/tools/misc/remote-exec/default.nix
@@ -56,7 +56,7 @@ buildPythonApplication rec {
     pytest-cov-stub
   ];
 
-  disabledTestPaths = lib.optionals stdenv.isDarwin [
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     # `watchdog` dependency does not correctly detect fsevents on darwin.
     # this only affects `remote --stream-changes`
     "test/test_file_changes.py"
diff --git a/pkgs/tools/misc/renameutils/default.nix b/pkgs/tools/misc/renameutils/default.nix
index e3ce23eca0a3..e09b7c60f971 100644
--- a/pkgs/tools/misc/renameutils/default.nix
+++ b/pkgs/tools/misc/renameutils/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   patches = [ ./install-exec.patch ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace src/apply.c \
       --replace "command = \"mv\"" "command = \"${coreutils}/bin/mv\"" \
       --replace "command = \"cp\"" "command = \"${coreutils}/bin/cp\""
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ readline ];
 
-  preConfigure = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  preConfigure = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     export ac_cv_func_lstat64=no
   '';
 
diff --git a/pkgs/tools/misc/rlwrap/default.nix b/pkgs/tools/misc/rlwrap/default.nix
index f1c2d6a58971..68baa3318871 100644
--- a/pkgs/tools/misc/rlwrap/default.nix
+++ b/pkgs/tools/misc/rlwrap/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ readline ];
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-error=implicit-function-declaration";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-error=implicit-function-declaration";
 
   meta = with lib; {
     description = "Readline wrapper for console programs";
diff --git a/pkgs/tools/misc/rmlint/default.nix b/pkgs/tools/misc/rmlint/default.nix
index 08a0a0c5e146..829987d6094e 100644
--- a/pkgs/tools/misc/rmlint/default.nix
+++ b/pkgs/tools/misc/rmlint/default.nix
@@ -17,7 +17,7 @@
 , wrapGAppsHook3
 , withGui ? false }:
 
-assert withGui -> !stdenv.isDarwin;
+assert withGui -> !stdenv.hostPlatform.isDarwin;
 
 stdenv.mkDerivation rec {
   pname = "rmlint";
diff --git a/pkgs/tools/misc/routino/default.nix b/pkgs/tools/misc/routino/default.nix
index 75ea2c24ecb8..e430a3063e2c 100644
--- a/pkgs/tools/misc/routino/default.nix
+++ b/pkgs/tools/misc/routino/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   patchFlags = [ "-p0" ];
-  patches = lib.optionals stdenv.isDarwin [
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [
     (fetchpatch {
       url = "https://raw.githubusercontent.com/macports/macports-ports/18fd229516a46e7272003acbe555735b2a902db7/gis/routino/files/patch-Makefile_conf.diff";
       sha256 = "1b7hpa4sizansnwwxq1c031nxwdwh71pg08jl9z9apiab8pjsn53";
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile.conf \
       --subst-var-by PREFIX $out
   '';
diff --git a/pkgs/tools/misc/rtz/default.nix b/pkgs/tools/misc/rtz/default.nix
index 61bf79379ee5..a5f55342a13a 100644
--- a/pkgs/tools/misc/rtz/default.nix
+++ b/pkgs/tools/misc/rtz/default.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
     bzip2
     openssl
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/tools/misc/rust-motd/default.nix b/pkgs/tools/misc/rust-motd/default.nix
index 26b582e5e944..df79acf5f1c5 100644
--- a/pkgs/tools/misc/rust-motd/default.nix
+++ b/pkgs/tools/misc/rust-motd/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/tools/misc/rustypaste-cli/default.nix b/pkgs/tools/misc/rustypaste-cli/default.nix
index 8f87e508a7be..a59668353739 100644
--- a/pkgs/tools/misc/rustypaste-cli/default.nix
+++ b/pkgs/tools/misc/rustypaste-cli/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-UaOUEuh7NNIhXOKqHEfVRv1hXld7qmdPdazATalXvQU=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/misc/sagoin/default.nix b/pkgs/tools/misc/sagoin/default.nix
index 1469bb6e3454..7764781dc01b 100644
--- a/pkgs/tools/misc/sagoin/default.nix
+++ b/pkgs/tools/misc/sagoin/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/tools/misc/screen/default.nix b/pkgs/tools/misc/screen/default.nix
index 29f7fe5ea846..e952fa6f253c 100644
--- a/pkgs/tools/misc/screen/default.nix
+++ b/pkgs/tools/misc/screen/default.nix
@@ -31,8 +31,8 @@ stdenv.mkDerivation rec {
   buildInputs = [
     ncurses
     libxcrypt
-  ] ++ lib.optional stdenv.isLinux pam
-    ++ lib.optional stdenv.isDarwin utmp;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux pam
+    ++ lib.optional stdenv.hostPlatform.isDarwin utmp;
 
   doCheck = true;
 
diff --git a/pkgs/tools/misc/screenfetch/default.nix b/pkgs/tools/misc/screenfetch/default.nix
index e3ad0e5c51c8..c4eb669875d6 100644
--- a/pkgs/tools/misc/screenfetch/default.nix
+++ b/pkgs/tools/misc/screenfetch/default.nix
@@ -7,11 +7,11 @@ let
   path = lib.makeBinPath ([
     coreutils gawk gnused findutils
     gnugrep ncurses bc pciutils
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     procps
     xdpyinfo
     xprop
-  ] ++ lib.optionals stdenv.isDarwin (with darwin; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin; [
     adv_cmds
     DarwinTools
     system_cmds
diff --git a/pkgs/tools/misc/sfeed/default.nix b/pkgs/tools/misc/sfeed/default.nix
index 3217b8f20d52..818f84ed37df 100644
--- a/pkgs/tools/misc/sfeed/default.nix
+++ b/pkgs/tools/misc/sfeed/default.nix
@@ -14,12 +14,12 @@ stdenv.mkDerivation rec {
 
   makeFlags = [ "RANLIB:=$(RANLIB)" "SFEED_CURSES_LDFLAGS:=-lncurses" ]
     # use macOS's strlcat() and strlcpy() instead of vendored ones
-    ++ lib.optional stdenv.isDarwin "COMPATOBJ:=";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "COMPATOBJ:=";
 
   installFlags = [ "PREFIX=$(out)" ];
 
   # otherwise does not find SIGWINCH
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-D_DARWIN_C_SOURCE";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-D_DARWIN_C_SOURCE";
 
   meta = with lib; {
     homepage = "https://codemadness.org/sfeed-simple-feed-parser.html";
diff --git a/pkgs/tools/misc/shadowenv/default.nix b/pkgs/tools/misc/shadowenv/default.nix
index 34597142522c..3c18662db5e7 100644
--- a/pkgs/tools/misc/shadowenv/default.nix
+++ b/pkgs/tools/misc/shadowenv/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   postInstall = ''
     installManPage man/man1/shadowenv.1
diff --git a/pkgs/tools/misc/sheldon/default.nix b/pkgs/tools/misc/sheldon/default.nix
index cf48868097b5..3d5e2e84a566 100644
--- a/pkgs/tools/misc/sheldon/default.nix
+++ b/pkgs/tools/misc/sheldon/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-+yTX1wUfVVjsM42X0QliL+0xbzTPheADZibPh/5Czh8=";
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security curl ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security curl ];
   nativeBuildInputs = [ installShellFiles pkg-config ];
 
   # Needs network connection
diff --git a/pkgs/tools/misc/shelldap/default.nix b/pkgs/tools/misc/shelldap/default.nix
index dcc95b24ef48..1b3fd5c5806d 100644
--- a/pkgs/tools/misc/shelldap/default.nix
+++ b/pkgs/tools/misc/shelldap/default.nix
@@ -28,7 +28,7 @@ perlPackages.buildPerlPackage rec {
     YAMLSyck
   ];
 
-  nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
 
   prePatch = ''
     touch Makefile.PL
@@ -40,7 +40,7 @@ perlPackages.buildPerlPackage rec {
     runHook postInstall
   '';
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/shelldap
   '';
 
diff --git a/pkgs/tools/misc/skim/default.nix b/pkgs/tools/misc/skim/default.nix
index bb51fd8899bd..4e09f021cc5f 100644
--- a/pkgs/tools/misc/skim/default.nix
+++ b/pkgs/tools/misc/skim/default.nix
@@ -43,7 +43,7 @@ rustPlatform.buildRustPackage rec {
   '';
 
   # https://github.com/lotabout/skim/issues/440
-  doCheck = !stdenv.isAarch64;
+  doCheck = !stdenv.hostPlatform.isAarch64;
 
   meta = with lib; {
     description = "Command-line fuzzy finder written in Rust";
diff --git a/pkgs/tools/misc/sshx/default.nix b/pkgs/tools/misc/sshx/default.nix
index 1daddeb8182a..0929703288e0 100644
--- a/pkgs/tools/misc/sshx/default.nix
+++ b/pkgs/tools/misc/sshx/default.nix
@@ -27,7 +27,7 @@ let
 
       nativeBuildInputs = [ protobuf ];
 
-      buildInputs = lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
+      buildInputs = lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
 
       cargoBuildFlags = [ "--package" pname ];
 
diff --git a/pkgs/tools/misc/star-history/default.nix b/pkgs/tools/misc/star-history/default.nix
index bb84b843a9ea..e8d96eb4249b 100644
--- a/pkgs/tools/misc/star-history/default.nix
+++ b/pkgs/tools/misc/star-history/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/tools/misc/starry/default.nix b/pkgs/tools/misc/starry/default.nix
index a59fb3127f17..cb6535baf3ac 100644
--- a/pkgs/tools/misc/starry/default.nix
+++ b/pkgs/tools/misc/starry/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/misc/starship/default.nix b/pkgs/tools/misc/starship/default.nix
index 37d38016b882..587d07eaf5bd 100644
--- a/pkgs/tools/misc/starship/default.nix
+++ b/pkgs/tools/misc/starship/default.nix
@@ -24,12 +24,12 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles cmake ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security Foundation Cocoa ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security Foundation Cocoa ];
 
-  NIX_LDFLAGS = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [ "-framework" "AppKit" ];
+  NIX_LDFLAGS = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [ "-framework" "AppKit" ];
 
   # tries to access HOME only in aarch64-darwin environment when building mac-notification-sys
-  preBuild = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  preBuild = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     export HOME=$TMPDIR
   '';
 
diff --git a/pkgs/tools/misc/synth/default.nix b/pkgs/tools/misc/synth/default.nix
index 688454c8ded1..4977372ee4ee 100644
--- a/pkgs/tools/misc/synth/default.nix
+++ b/pkgs/tools/misc/synth/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-i2Pp9sfTBth3DtrQ99Vw+KLnGECrkqtlRNAKiwSWf48=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Security
   ];
diff --git a/pkgs/tools/misc/szyszka/default.nix b/pkgs/tools/misc/szyszka/default.nix
index 980b37a910df..8bd133e6dae0 100644
--- a/pkgs/tools/misc/szyszka/default.nix
+++ b/pkgs/tools/misc/szyszka/default.nix
@@ -38,7 +38,7 @@ rustPlatform.buildRustPackage rec {
     atk
     gdk-pixbuf
     gtk4
-  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     Foundation
   ]);
 
diff --git a/pkgs/tools/misc/tab-rs/default.nix b/pkgs/tools/misc/tab-rs/default.nix
index 6298d84c41fd..7d3721acb3c4 100644
--- a/pkgs/tools/misc/tab-rs/default.nix
+++ b/pkgs/tools/misc/tab-rs/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-56gy9AH3i4OSvExMuR3n/2hF5pJgbn5JJpxZLXKfu2w=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ IOKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ IOKit ];
 
   # many tests are failing
   doCheck = false;
@@ -24,6 +24,6 @@ rustPlatform.buildRustPackage rec {
     license = licenses.mit;
     maintainers = [ ];
     mainProgram = "tab";
-    broken = (stdenv.isDarwin && stdenv.isAarch64); # Added 2023-11-13
+    broken = (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64); # Added 2023-11-13
   };
 }
diff --git a/pkgs/tools/misc/tealdeer/default.nix b/pkgs/tools/misc/tealdeer/default.nix
index 9ca82d8f1bec..c3fa408aabed 100644
--- a/pkgs/tools/misc/tealdeer/default.nix
+++ b/pkgs/tools/misc/tealdeer/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-VeJsCWU7sJy88uvGGjpuGRzsAgBRvzOYU1FwpImpiLk=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   nativeBuildInputs = [ installShellFiles ];
 
diff --git a/pkgs/tools/misc/tere/default.nix b/pkgs/tools/misc/tere/default.nix
index b362ff418375..905c197cc732 100644
--- a/pkgs/tools/misc/tere/default.nix
+++ b/pkgs/tools/misc/tere/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage {
     ncurses
   ];
 
-  checkFlags = lib.optionals stdenv.isDarwin [
+  checkFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     # Unexplained fail
     # https://github.com/NixOS/nixpkgs/pull/298527#issuecomment-2053758845
     "--skip=first_run_prompt_accept"
diff --git a/pkgs/tools/misc/timidity/default.nix b/pkgs/tools/misc/timidity/default.nix
index 26f84e383c48..ce6e0c7ae8f0 100644
--- a/pkgs/tools/misc/timidity/default.nix
+++ b/pkgs/tools/misc/timidity/default.nix
@@ -28,13 +28,13 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ pkg-config ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [ memstreamHook ];
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [ memstreamHook ];
   buildInputs = [
     libjack2
     ncurses
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     alsa-lib
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreAudio
     libobjc
   ];
@@ -43,12 +43,12 @@ stdenv.mkDerivation rec {
     "--enable-ncurses"
     "lib_cv_va_copy=yes"
     "lib_cv___va_copy=yes"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "--enable-audio=oss,alsa,jack"
     "--enable-alsaseq"
     "--with-default-output=alsa"
     "lib_cv_va_val_copy=yes"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--enable-audio=darwin,jack"
     "lib_cv_va_val_copy=no"
     "timidity_cv_ccoption_rdynamic=yes"
@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
     tar --strip-components=1 -xf $instruments -C $out/share/timidity/
   '';
   # This fixup step is unnecessary and fails on Darwin
-  dontRewriteSymlinks = stdenv.isDarwin;
+  dontRewriteSymlinks = stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     homepage = "https://sourceforge.net/projects/timidity/";
diff --git a/pkgs/tools/misc/tmux-sessionizer/default.nix b/pkgs/tools/misc/tmux-sessionizer/default.nix
index b6a3682ec757..d8749c4115c8 100644
--- a/pkgs/tools/misc/tmux-sessionizer/default.nix
+++ b/pkgs/tools/misc/tmux-sessionizer/default.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage {
   OPENSSL_NO_VENDOR = 1;
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "Fastest way to manage projects as tmux sessions";
diff --git a/pkgs/tools/misc/tmux/default.nix b/pkgs/tools/misc/tmux/default.nix
index af381a062259..d8b40913c9c8 100644
--- a/pkgs/tools/misc/tmux/default.nix
+++ b/pkgs/tools/misc/tmux/default.nix
@@ -10,7 +10,7 @@
 , runCommand
 , withSystemd ? lib.meta.availableOn stdenv.hostPlatform systemd, systemd
 , withUtf8proc ? true, utf8proc # gets Unicode updates faster than glibc
-, withUtempter ? stdenv.isLinux && !stdenv.hostPlatform.isMusl, libutempter
+, withUtempter ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isMusl, libutempter
 , withSixel ? true
 }:
 
@@ -88,13 +88,13 @@ stdenv.mkDerivation (finalAttrs: {
   postInstall = ''
     mkdir -p $out/share/bash-completion/completions
     cp -v ${bashCompletion}/completions/tmux $out/share/bash-completion/completions/tmux
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir $out/nix-support
     echo "${finalAttrs.passthru.terminfo}" >> $out/nix-support/propagated-user-env-packages
   '';
 
   passthru = {
-    terminfo = runCommand "tmux-terminfo" { nativeBuildInputs = [ ncurses ]; } (if stdenv.isDarwin then ''
+    terminfo = runCommand "tmux-terminfo" { nativeBuildInputs = [ ncurses ]; } (if stdenv.hostPlatform.isDarwin then ''
       mkdir -p $out/share/terminfo/74
       cp -v ${ncurses}/share/terminfo/74/tmux $out/share/terminfo/74
       # macOS ships an old version (5.7) of ncurses which does not include tmux-256color so we need to provide it from our ncurses.
diff --git a/pkgs/tools/misc/toastify/default.nix b/pkgs/tools/misc/toastify/default.nix
index b244aec493ac..6fde17977ebe 100644
--- a/pkgs/tools/misc/toastify/default.nix
+++ b/pkgs/tools/misc/toastify/default.nix
@@ -13,11 +13,11 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-Ps2pRLpPxw+OS1ungQtVQ8beoKpc8pjzQEndMNni08k=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Cocoa
   ];
 
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export HOME=$(mktemp -d)
   '';
 
diff --git a/pkgs/tools/misc/topgrade/default.nix b/pkgs/tools/misc/topgrade/default.nix
index 38e1f0d95c1a..70402b22df7f 100644
--- a/pkgs/tools/misc/topgrade/default.nix
+++ b/pkgs/tools/misc/topgrade/default.nix
@@ -25,13 +25,13 @@ rustPlatform.buildRustPackage rec {
     installShellFiles
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Cocoa
     Foundation
   ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-framework"
     "AppKit"
   ]);
diff --git a/pkgs/tools/misc/toybox/default.nix b/pkgs/tools/misc/toybox/default.nix
index 4ef5279ef476..99167c87fa84 100644
--- a/pkgs/tools/misc/toybox/default.nix
+++ b/pkgs/tools/misc/toybox/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   depsBuildBuild = optionals (stdenv.hostPlatform != stdenv.buildPlatform) [ buildPackages.stdenv.cc ];
   buildInputs = [
     libxcrypt
-  ] ++ optionals stdenv.isDarwin [
+  ] ++ optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ] ++ optionals (enableStatic && stdenv.cc.libc ? static) [
     stdenv.cc.libc
@@ -40,10 +40,10 @@ stdenv.mkDerivation rec {
     make ${if enableMinimal then
       "allnoconfig"
     else
-      if stdenv.isFreeBSD then
+      if stdenv.hostPlatform.isFreeBSD then
         "freebsd_defconfig"
       else
-        if stdenv.isDarwin then
+        if stdenv.hostPlatform.isDarwin then
           "macos_defconfig"
         else
           "defconfig"
diff --git a/pkgs/tools/misc/trackma/default.nix b/pkgs/tools/misc/trackma/default.nix
index 6ecf2723f00b..4ae9306f28fb 100644
--- a/pkgs/tools/misc/trackma/default.nix
+++ b/pkgs/tools/misc/trackma/default.nix
@@ -45,7 +45,7 @@ python3.pkgs.buildPythonApplication rec {
     ++ lib.optionals withQT [ pyqt5 ]
     ++ lib.optionals withGTK [ pycairo pygobject3 ]
     ++ lib.optionals withCurses [ urwid ]
-    ++ lib.optionals stdenv.isLinux [ pydbus pyinotify ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ pydbus pyinotify ]
     ++ lib.optionals (withGTK || withQT) [ pillow ]);
 
   dontWrapQtApps = true;
diff --git a/pkgs/tools/misc/tty-clock/default.nix b/pkgs/tools/misc/tty-clock/default.nix
index 0abb0c668be0..f5d70cd2071f 100644
--- a/pkgs/tools/misc/tty-clock/default.nix
+++ b/pkgs/tools/misc/tty-clock/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   makeFlags = [ "PREFIX=$(out)" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://github.com/xorg62/tty-clock";
     license = licenses.bsd3;
     description = "Digital clock in ncurses";
diff --git a/pkgs/tools/misc/twm/default.nix b/pkgs/tools/misc/twm/default.nix
index bb963d5d1d0e..3625ceef80a9 100644
--- a/pkgs/tools/misc/twm/default.nix
+++ b/pkgs/tools/misc/twm/default.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-gJ5go9V8c97pQZICUD1ksLJhOyJXyVXAWssH3fhrRVQ=";
 
   nativeBuildInputs = [ pkg-config installShellFiles ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
     installShellCompletion --cmd twm \
diff --git a/pkgs/tools/misc/usbimager/default.nix b/pkgs/tools/misc/usbimager/default.nix
index 2d339fabc3f7..11a9162af2f2 100644
--- a/pkgs/tools/misc/usbimager/default.nix
+++ b/pkgs/tools/misc/usbimager/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, fetchFromGitLab, pkg-config, wrapGAppsHook3
 , withLibui ? true, gtk3
-, withUdisks ? stdenv.isLinux, udisks, glib
+, withUdisks ? stdenv.hostPlatform.isLinux, udisks, glib
 , libX11 }:
 
 stdenv.mkDerivation rec {
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     # feel free add them if you have a machine to test
     platforms = with platforms; linux;
     # never built on aarch64-linux since first introduction in nixpkgs
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
     mainProgram = "usbimager";
   };
 }
diff --git a/pkgs/tools/misc/uutils-coreutils/default.nix b/pkgs/tools/misc/uutils-coreutils/default.nix
index 033692364752..a71567b59038 100644
--- a/pkgs/tools/misc/uutils-coreutils/default.nix
+++ b/pkgs/tools/misc/uutils-coreutils/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ rustPlatform.cargoSetupHook sphinx ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security libiconv ];
 
   makeFlags = [
     "CARGO=${cargo}/bin/cargo"
diff --git a/pkgs/tools/misc/uwufetch/default.nix b/pkgs/tools/misc/uwufetch/default.nix
index 4dba7dac8038..ce5e378b9ac7 100644
--- a/pkgs/tools/misc/uwufetch/default.nix
+++ b/pkgs/tools/misc/uwufetch/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     # fix command_path for package manager (nix-store)
     substituteInPlace fetch.c \
       --replace "/usr/bin" "/run/current-system/sw/bin"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile \
       --replace "local/bin" "bin" \
       --replace "local/lib" "lib" \
diff --git a/pkgs/tools/misc/uwuify/default.nix b/pkgs/tools/misc/uwuify/default.nix
index 4a3411d05a38..a7380bc8b1f7 100644
--- a/pkgs/tools/misc/uwuify/default.nix
+++ b/pkgs/tools/misc/uwuify/default.nix
@@ -12,7 +12,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   cargoHash = "sha256-1BoB7K/dWy3AbogvHIDLrdPD7K54EISvn4RVU5RLTi4=";
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   meta = with lib; {
     description = "Fast text uwuifier";
diff --git a/pkgs/tools/misc/vector/default.nix b/pkgs/tools/misc/vector/default.nix
index 3b08a82308c6..e93603d044d1 100644
--- a/pkgs/tools/misc/vector/default.nix
+++ b/pkgs/tools/misc/vector/default.nix
@@ -88,8 +88,8 @@ rustPlatform.buildRustPackage {
       rdkafka
       zstd
     ]
-    ++ lib.optionals stdenv.isLinux [ rust-jemalloc-sys-unprefixed ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ rust-jemalloc-sys-unprefixed ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       rust-jemalloc-sys
       Security
       libiconv
diff --git a/pkgs/tools/misc/vimv-rs/default.nix b/pkgs/tools/misc/vimv-rs/default.nix
index 2b419e5403c0..780af1846ff1 100644
--- a/pkgs/tools/misc/vimv-rs/default.nix
+++ b/pkgs/tools/misc/vimv-rs/default.nix
@@ -12,7 +12,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-rYQxIttuGBGEkYkFtSBl8ce1I/Akm6FxeITJcaIeP6M=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Foundation ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Foundation ];
 
   meta = with lib; {
     description = "Command line utility for batch-renaming files";
diff --git a/pkgs/tools/misc/vrc-get/default.nix b/pkgs/tools/misc/vrc-get/default.nix
index dac2f34dbaca..a458e6c30953 100644
--- a/pkgs/tools/misc/vrc-get/default.nix
+++ b/pkgs/tools/misc/vrc-get/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
   cargoHash = "sha256-WFGY5osZIEYeHQchvuE3ddeqh2wzfZNV+SGqW08zYDI=";
 
diff --git a/pkgs/tools/misc/wagyu/default.nix b/pkgs/tools/misc/wagyu/default.nix
index 0eb71743f064..6200ee77d613 100644
--- a/pkgs/tools/misc/wagyu/default.nix
+++ b/pkgs/tools/misc/wagyu/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-vseTtok0E0ddg9ALQ1ql3NPPxirfyMPHOSWsM2qu2jU=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "Rust library for generating cryptocurrency wallets";
diff --git a/pkgs/tools/misc/watchexec/default.nix b/pkgs/tools/misc/watchexec/default.nix
index cd7381243cc4..0d04a21219bc 100644
--- a/pkgs/tools/misc/watchexec/default.nix
+++ b/pkgs/tools/misc/watchexec/default.nix
@@ -15,9 +15,9 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Cocoa AppKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa AppKit ];
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-framework AppKit";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-framework AppKit";
 
   checkFlags = [ "--skip=help" "--skip=help_short" ];
 
diff --git a/pkgs/tools/misc/websocat/default.nix b/pkgs/tools/misc/websocat/default.nix
index 786062cfffb9..fd8841b96bd0 100644
--- a/pkgs/tools/misc/websocat/default.nix
+++ b/pkgs/tools/misc/websocat/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config makeWrapper ];
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security ];
 
   buildFeatures = [ "ssl" ];
 
diff --git a/pkgs/tools/misc/wv2/default.nix b/pkgs/tools/misc/wv2/default.nix
index 3a7bd5d395a6..8a4ccaed896c 100644
--- a/pkgs/tools/misc/wv2/default.nix
+++ b/pkgs/tools/misc/wv2/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = lib.optionals stdenv.cc.isClang [ (lib.cmakeFeature "CMAKE_CXX_STANDARD" "14") ];
 
   # Linking gobject explicitly fixes missing symbols (such as missing `_g_object_unref`) on Darwin.
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export NIX_LDFLAGS+=" $(pkg-config gobject-2.0 --libs)"
   '';
 
diff --git a/pkgs/tools/misc/xburst-tools/default.nix b/pkgs/tools/misc/xburst-tools/default.nix
index 093e7152bbcf..a94f9681a05c 100644
--- a/pkgs/tools/misc/xburst-tools/default.nix
+++ b/pkgs/tools/misc/xburst-tools/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation {
     lib.optional (gccCross != null) gccCross;
 
   meta = {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Qi tools to access the Ben Nanonote USB_BOOT mode";
     license = lib.licenses.gpl3;
     homepage = "http://www.linux-mtd.infradead.org/";
diff --git a/pkgs/tools/misc/xxv/default.nix b/pkgs/tools/misc/xxv/default.nix
index 3973f8d096ac..eaa27e34d9d3 100644
--- a/pkgs/tools/misc/xxv/default.nix
+++ b/pkgs/tools/misc/xxv/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-S8IKBXREJ+0z4Qz9i3RH52btg1Mpk6GjKIJf4ivdt14=";
 
   buildInputs = lib.optionals useNcurses [ ncurses ]
-  ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Security ])
+  ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Security ])
   ;
 
   # I'm picking pancurses for Windows simply because that's the example given in Cursive's
diff --git a/pkgs/tools/misc/yubikey-manager/default.nix b/pkgs/tools/misc/yubikey-manager/default.nix
index 6243a2e4668c..5523b6468969 100644
--- a/pkgs/tools/misc/yubikey-manager/default.nix
+++ b/pkgs/tools/misc/yubikey-manager/default.nix
@@ -20,7 +20,7 @@ python3Packages.buildPythonPackage rec {
 
   postPatch = ''
     substituteInPlace "ykman/pcsc/__init__.py" \
-      --replace 'pkill' '${if stdenv.isLinux then procps else "/usr"}/bin/pkill'
+      --replace 'pkill' '${if stdenv.hostPlatform.isLinux then procps else "/usr"}/bin/pkill'
   '';
 
   nativeBuildInputs = with python3Packages; [
diff --git a/pkgs/tools/misc/yubikey-personalization-gui/default.nix b/pkgs/tools/misc/yubikey-personalization-gui/default.nix
index 347221ceedf8..6493c7244c3b 100644
--- a/pkgs/tools/misc/yubikey-personalization-gui/default.nix
+++ b/pkgs/tools/misc/yubikey-personalization-gui/default.nix
@@ -34,7 +34,7 @@ mkDerivation rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://developers.yubico.com/yubikey-personalization-gui";
     description = "QT based cross-platform utility designed to facilitate reconfiguration of the Yubikey";
     license = licenses.bsd2;
diff --git a/pkgs/tools/misc/zellij/default.nix b/pkgs/tools/misc/zellij/default.nix
index 105d35349eb9..e069d0c8d87f 100644
--- a/pkgs/tools/misc/zellij/default.nix
+++ b/pkgs/tools/misc/zellij/default.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
     DiskArbitration
     Foundation
diff --git a/pkgs/tools/misc/zoxide/default.nix b/pkgs/tools/misc/zoxide/default.nix
index 5b2d00f7538e..5c1ba44d156d 100644
--- a/pkgs/tools/misc/zoxide/default.nix
+++ b/pkgs/tools/misc/zoxide/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   postPatch = lib.optionalString withFzf ''
     substituteInPlace src/util.rs \
diff --git a/pkgs/tools/networking/aircrack-ng/default.nix b/pkgs/tools/networking/aircrack-ng/default.nix
index 6bfd3136dc98..b1ee70125739 100644
--- a/pkgs/tools/networking/aircrack-ng/default.nix
+++ b/pkgs/tools/networking/aircrack-ng/default.nix
@@ -34,7 +34,7 @@
 , useGcrypt ? false
 , enableAirolib ? true
 , enableRegex ? true
-, useAirpcap ? stdenv.isCygwin
+, useAirpcap ? stdenv.hostPlatform.isCygwin
 }:
 let
   airpcap-sdk = fetchzip {
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-niQDwiqi5GtBW5HIn0endnqPb/MqllcjsjXw4pTyFKY=";
   };
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace lib/osdep/linux.c --replace-warn /usr/local/bin ${lib.escapeShellArg (lib.makeBinPath [
       wirelesstools
     ])}
@@ -72,15 +72,15 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config makeWrapper autoreconfHook ];
   buildInputs =
     lib.singleton (if useGcrypt then libgcrypt else openssl)
-    ++ lib.optionals stdenv.isLinux [ libpcap zlib libnl iw ethtool pciutils ]
-    ++ lib.optional (stdenv.isCygwin && stdenv.isClang) libiconv
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libpcap zlib libnl iw ethtool pciutils ]
+    ++ lib.optional (stdenv.hostPlatform.isCygwin && stdenv.hostPlatform.isClang) libiconv
     ++ lib.optional enableAirolib sqlite
     ++ lib.optional enableRegex pcre2
     ++ lib.optional useAirpcap airpcap-sdk;
 
   nativeCheckInputs = [ cmocka expect ];
 
-  postFixup = lib.optionalString stdenv.isLinux ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram "$out/bin/airmon-ng" --prefix PATH : ${lib.escapeShellArg (lib.makeBinPath [
       ethtool
       iw
@@ -90,7 +90,7 @@ stdenv.mkDerivation rec {
   '';
 
   installCheckTarget = "integration";
-  nativeInstallCheckInputs = [ cmocka expect ] ++ lib.optionals stdenv.isLinux [ tcpdump hostapd wpa_supplicant screen ];
+  nativeInstallCheckInputs = [ cmocka expect ] ++ lib.optionals stdenv.hostPlatform.isLinux [ tcpdump hostapd wpa_supplicant screen ];
 
   meta = {
     description = "WiFi security auditing tools suite";
diff --git a/pkgs/tools/networking/anevicon/default.nix b/pkgs/tools/networking/anevicon/default.nix
index 961127580500..c84f0e75d3d6 100644
--- a/pkgs/tools/networking/anevicon/default.nix
+++ b/pkgs/tools/networking/anevicon/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-Id/vjne73w+bDVA8wT7fV1DMXeGtYbSAdwl07UfYJbw=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security ];
 
   cargoPatches = [
     # Add Cargo.lock file, https://github.com/rozgo/anevicon/pull/1
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage rec {
   ];
 
   # Tries to send large UDP packets that Darwin rejects.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "UDP-based load generator";
diff --git a/pkgs/tools/networking/aria2/default.nix b/pkgs/tools/networking/aria2/default.nix
index 97eb911baef1..f1864ed72dd2 100644
--- a/pkgs/tools/networking/aria2/default.nix
+++ b/pkgs/tools/networking/aria2/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config autoreconfHook sphinx ];
 
   buildInputs = [ gnutls c-ares libxml2 sqlite zlib libssh2 ] ++
-    lib.optional stdenv.isDarwin Security;
+    lib.optional stdenv.hostPlatform.isDarwin Security;
 
   outputs = [ "bin" "dev" "out" "doc" "man" ];
 
diff --git a/pkgs/tools/networking/assh/default.nix b/pkgs/tools/networking/assh/default.nix
index 9d13a323357b..43ed2dc16c8a 100644
--- a/pkgs/tools/networking/assh/default.nix
+++ b/pkgs/tools/networking/assh/default.nix
@@ -26,7 +26,7 @@ buildGoModule rec {
 
   nativeBuildInputs = [ makeWrapper ];
 
-  nativeCheckInputs = lib.optionals stdenv.isDarwin [ ps ];
+  nativeCheckInputs = lib.optionals stdenv.hostPlatform.isDarwin [ ps ];
 
   postInstall = ''
     wrapProgram "$out/bin/assh" \
diff --git a/pkgs/tools/networking/atinout/default.nix b/pkgs/tools/networking/atinout/default.nix
index 64d13a7b14ea..1155b2b876bb 100644
--- a/pkgs/tools/networking/atinout/default.nix
+++ b/pkgs/tools/networking/atinout/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation rec {
   version = "0.9.2-alpha";
 
   env.NIX_CFLAGS_COMPILE = lib.optionalString (!stdenv.cc.isClang) "-Werror=implicit-fallthrough=0";
-  LANG = if stdenv.isDarwin then "en_US.UTF-8" else "C.UTF-8";
+  LANG = if stdenv.hostPlatform.isDarwin then "en_US.UTF-8" else "C.UTF-8";
   nativeBuildInputs = [ ronn mount ];
 
   src = fetchgit {
diff --git a/pkgs/tools/networking/bandwhich/default.nix b/pkgs/tools/networking/bandwhich/default.nix
index 550266b9da99..0c5a6d20a694 100644
--- a/pkgs/tools/networking/bandwhich/default.nix
+++ b/pkgs/tools/networking/bandwhich/default.nix
@@ -25,10 +25,10 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # 10 passed; 47 failed https://hydra.nixos.org/build/148943783/nixlog/1
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   postPatch = ''
     ln --force -s ${./Cargo.lock} Cargo.lock
diff --git a/pkgs/tools/networking/bitmask-vpn/default.nix b/pkgs/tools/networking/bitmask-vpn/default.nix
index 60988da176a2..264bddf5b0f9 100644
--- a/pkgs/tools/networking/bitmask-vpn/default.nix
+++ b/pkgs/tools/networking/bitmask-vpn/default.nix
@@ -84,7 +84,7 @@ buildGoModule rec {
 
     patchShebangs gui/build.sh
     wrapPythonProgramsIn branding/scripts
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace pkg/helper/linux.go \
       --replace /usr/sbin/openvpn ${openvpn}/bin/openvpn
     substituteInPlace pkg/vpn/launcher_linux.go \
@@ -103,7 +103,7 @@ buildGoModule rec {
     qttools
     which
     wrapQtAppsHook
-  ] ++ lib.optional (!stdenv.isLinux) qtinstaller;
+  ] ++ lib.optional (!stdenv.hostPlatform.isLinux) qtinstaller;
 
   buildInputs = [
     qtbase
@@ -112,7 +112,7 @@ buildGoModule rec {
     qtgraphicaleffects
     qtquickcontrols
     qtquickcontrols2
-  ] ++ lib.optionals stdenv.isDarwin [ CoreFoundation Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreFoundation Security ];
   # FIXME: building on Darwin currently fails
   # due to missing debug symbols for Qt,
   # this should be fixable once darwin.apple_sdk >= 10.13
@@ -142,7 +142,7 @@ buildGoModule rec {
     (cd branding/templates/debian && ${python3Packages.python}/bin/python3 generate.py)
     install -m 444 -D branding/templates/debian/app.desktop $out/share/applications/${pname}.desktop
     install -m 444 -D providers/${provider}/assets/icon.svg $out/share/icons/hicolor/scalable/apps/${pname}.svg
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     install -m 444 -D -t $out/share/polkit-1/actions ${bitmask-root}/share/polkit-1/actions/se.leap.bitmask.policy
   '';
 
diff --git a/pkgs/tools/networking/bore-cli/default.nix b/pkgs/tools/networking/bore-cli/default.nix
index 30a0463ace08..d182fd22b5e1 100644
--- a/pkgs/tools/networking/bore-cli/default.nix
+++ b/pkgs/tools/networking/bore-cli/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-PZDie/lBextHu8EV/butg2pJZFfizeOEdD21I3XFoHk=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/tools/networking/bore/default.nix b/pkgs/tools/networking/bore/default.nix
index 9af98878b854..4d67cb4c94d7 100644
--- a/pkgs/tools/networking/bore/default.nix
+++ b/pkgs/tools/networking/bore/default.nix
@@ -15,16 +15,16 @@ rustPlatform.buildRustPackage rec {
   cargoBuildFlags = [ "-p" pname ];
 
   # error[E0793]: reference to packed field is unaligned
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   # FIXME can’t test --all-targets and --doc in a single invocation
   cargoTestFlags = [ "--all-targets" "--workspace" ];
   checkFeatures = [ "std" ];
 
   nativeBuildInputs = [ installShellFiles ]
-    ++ lib.optional stdenv.isDarwin rustPlatform.bindgenHook;
+    ++ lib.optional stdenv.hostPlatform.isDarwin rustPlatform.bindgenHook;
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Libsystem
     SystemConfiguration
   ];
@@ -46,6 +46,6 @@ rustPlatform.buildRustPackage rec {
     license = licenses.isc;
     maintainers = [ ];
     mainProgram = "bore";
-    broken = stdenv.isDarwin; # bindgen fails on: "in6_addr_union_(...)" is not a valid Ident
+    broken = stdenv.hostPlatform.isDarwin; # bindgen fails on: "in6_addr_union_(...)" is not a valid Ident
   };
 }
diff --git a/pkgs/tools/networking/boringtun/default.nix b/pkgs/tools/networking/boringtun/default.nix
index e2a6a7a3b6e0..30bb243454f8 100644
--- a/pkgs/tools/networking/boringtun/default.nix
+++ b/pkgs/tools/networking/boringtun/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-WFKlfuZGVU5KA57ZYjsIrIwE4B5TeaU5IKt9BNEnWyY=";
 
-  buildInputs = lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
 
   # Testing this project requires sudo, Docker and network access, etc.
   doCheck = false;
diff --git a/pkgs/tools/networking/cfspeedtest/default.nix b/pkgs/tools/networking/cfspeedtest/default.nix
index 61bdad229863..f89e8e677c53 100644
--- a/pkgs/tools/networking/cfspeedtest/default.nix
+++ b/pkgs/tools/networking/cfspeedtest/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
     description = "Unofficial CLI for speed.cloudflare.com";
     homepage = "https://github.com/code-inflation/cfspeedtest";
     license = with licenses; [ mit ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ colemickens ];
     mainProgram = "cfspeedtest";
   };
diff --git a/pkgs/tools/networking/chrony/default.nix b/pkgs/tools/networking/chrony/default.nix
index 4b8b8e8b9708..b18cc5642285 100644
--- a/pkgs/tools/networking/chrony/default.nix
+++ b/pkgs/tools/networking/chrony/default.nix
@@ -18,13 +18,13 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ gnutls libedit nspr nss readline texinfo ]
-    ++ lib.optionals stdenv.isLinux [ libcap libseccomp pps-tools ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libcap libseccomp pps-tools ];
 
   configureFlags = [
     "--enable-ntp-signd"
     "--sbindir=$(out)/bin"
     "--chronyrundir=/run/chrony"
-  ] ++ lib.optional stdenv.isLinux "--enable-scfilter";
+  ] ++ lib.optional stdenv.hostPlatform.isLinux "--enable-scfilter";
 
   patches = [
     # Cleanup the installation script
diff --git a/pkgs/tools/networking/cjdns/default.nix b/pkgs/tools/networking/cjdns/default.nix
index 85705a27231f..c60e853a7d21 100644
--- a/pkgs/tools/networking/cjdns/default.nix
+++ b/pkgs/tools/networking/cjdns/default.nix
@@ -45,7 +45,7 @@ rustPlatform.buildRustPackage rec {
     pkg-config
   ] ++
     # for flock
-    lib.optional stdenv.isLinux util-linux;
+    lib.optional stdenv.hostPlatform.isLinux util-linux;
 
   buildInputs = [
     libuv
@@ -70,6 +70,6 @@ rustPlatform.buildRustPackage rec {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ ehmry ];
     platforms = platforms.linux;
-    broken = stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/tools/networking/cntlm/default.nix b/pkgs/tools/networking/cntlm/default.nix
index b2a4193ff049..8750967107ef 100644
--- a/pkgs/tools/networking/cntlm/default.nix
+++ b/pkgs/tools/networking/cntlm/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ which ];
 
-  preConfigure = lib.optionalString stdenv.isDarwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace configure --replace "xlc_r gcc" "xlc_r gcc $CC"
     substitute Makefile Makefile.$CC --replace "CC=gcc" "CC=$CC"
   '';
diff --git a/pkgs/tools/networking/cocom/default.nix b/pkgs/tools/networking/cocom/default.nix
index 7281583b17c1..ad6ab959e6e2 100644
--- a/pkgs/tools/networking/cocom/default.nix
+++ b/pkgs/tools/networking/cocom/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-y5/xOP5YzqsqBxG9c4r9ORyaEf5Ed6D10NFCaKQPchI=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # Tests require network access
   doCheck = false;
diff --git a/pkgs/tools/networking/croc/test-local-relay.nix b/pkgs/tools/networking/croc/test-local-relay.nix
index 90d335885e7f..f0a66fcaba82 100644
--- a/pkgs/tools/networking/croc/test-local-relay.nix
+++ b/pkgs/tools/networking/croc/test-local-relay.nix
@@ -28,6 +28,6 @@ stdenv.mkDerivation {
 
   meta = {
     timeout = 300;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/networking/curl-impersonate/chrome/default.nix b/pkgs/tools/networking/curl-impersonate/chrome/default.nix
index fd97c69b31c5..0ab3085749f3 100644
--- a/pkgs/tools/networking/curl-impersonate/chrome/default.nix
+++ b/pkgs/tools/networking/curl-impersonate/chrome/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs =
-    lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isDarwin [
       # Must come first so that it shadows the 'libtool' command but leaves 'libtoolize'
       cctools
     ]
@@ -77,7 +77,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [
     "--with-ca-bundle=${
-      if stdenv.isDarwin then "/etc/ssl/cert.pem" else "/etc/ssl/certs/ca-certificates.crt"
+      if stdenv.hostPlatform.isDarwin then "/etc/ssl/cert.pem" else "/etc/ssl/certs/ca-certificates.crt"
     }"
     "--with-ca-path=${cacert}/etc/ssl/certs"
   ];
diff --git a/pkgs/tools/networking/curl-impersonate/firefox/default.nix b/pkgs/tools/networking/curl-impersonate/firefox/default.nix
index 157aedab489a..73b4458ec8db 100644
--- a/pkgs/tools/networking/curl-impersonate/firefox/default.nix
+++ b/pkgs/tools/networking/curl-impersonate/firefox/default.nix
@@ -62,7 +62,7 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs =
-    lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isDarwin [
       # Must come first so that it shadows the 'libtool' command but leaves 'libtoolize'
       cctools
     ]
@@ -87,7 +87,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [
     "--with-ca-bundle=${
-      if stdenv.isDarwin then "/etc/ssl/cert.pem" else "/etc/ssl/certs/ca-certificates.crt"
+      if stdenv.hostPlatform.isDarwin then "/etc/ssl/cert.pem" else "/etc/ssl/certs/ca-certificates.crt"
     }"
     "--with-ca-path=${cacert}/etc/ssl/certs"
   ];
diff --git a/pkgs/tools/networking/curl/default.nix b/pkgs/tools/networking/curl/default.nix
index 033657371747..567ddcbf7d02 100644
--- a/pkgs/tools/networking/curl/default.nix
+++ b/pkgs/tools/networking/curl/default.nix
@@ -21,7 +21,7 @@
 , opensslSupport ? zlibSupport, openssl
 , pslSupport ? false, libpsl
 , rtmpSupport ? false, rtmpdump
-, scpSupport ? zlibSupport && !stdenv.isSunOS && !stdenv.isCygwin, libssh2
+, scpSupport ? zlibSupport && !stdenv.hostPlatform.isSunOS && !stdenv.hostPlatform.isCygwin, libssh2
 , wolfsslSupport ? false, wolfssl
 , rustlsSupport ? false, rustls-ffi
 , zlibSupport ? true, zlib
@@ -76,7 +76,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   outputs = [ "bin" "dev" "out" "man" "devdoc" ];
-  separateDebugInfo = stdenv.isLinux;
+  separateDebugInfo = stdenv.hostPlatform.isLinux;
 
   enableParallelBuilding = true;
 
@@ -105,7 +105,7 @@ stdenv.mkDerivation (finalAttrs: {
     lib.optional rustlsSupport rustls-ffi ++
     lib.optional zlibSupport zlib ++
     lib.optional zstdSupport zstd ++
-    lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+    lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
       CoreFoundation
       CoreServices
       SystemConfiguration
@@ -152,16 +152,16 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optionals stdenv.hostPlatform.isWindows [
       "--disable-shared"
       "--enable-static"
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Disable default CA bundle, use NIX_SSL_CERT_FILE or fallback to nss-cacert from the default profile.
       # Without this curl might detect /etc/ssl/cert.pem at build time on macOS, causing curl to ignore NIX_SSL_CERT_FILE.
       "--without-ca-bundle"
       "--without-ca-path"
     ] ++ lib.optionals (!gnutlsSupport && !opensslSupport && !wolfsslSupport && !rustlsSupport) [
       "--without-ssl"
-    ] ++ lib.optionals (rustlsSupport && !stdenv.isDarwin) [
+    ] ++ lib.optionals (rustlsSupport && !stdenv.hostPlatform.isDarwin) [
       "--with-ca-bundle=/etc/ssl/certs/ca-certificates.crt"
-    ] ++ lib.optionals (gnutlsSupport && !stdenv.isDarwin) [
+    ] ++ lib.optionals (gnutlsSupport && !stdenv.hostPlatform.isDarwin) [
       "--with-ca-path=/etc/ssl/certs"
     ];
 
@@ -174,7 +174,7 @@ stdenv.mkDerivation (finalAttrs: {
   doCheck = false;
   preCheck = ''
     patchShebangs tests/
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # bad interaction with sandbox if enabled?
     rm tests/data/test1453
     rm tests/data/test1086
@@ -215,7 +215,7 @@ stdenv.mkDerivation (finalAttrs: {
       pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
     } // lib.optionalAttrs (stdenv.hostPlatform.system != "x86_64-darwin") {
       static = pkgsStatic.curl;
-    } // lib.optionalAttrs (!stdenv.isDarwin) {
+    } // lib.optionalAttrs (!stdenv.hostPlatform.isDarwin) {
       fetchpatch = tests.fetchpatch.simple.override { fetchpatch = (fetchpatch.override { fetchurl = useThisCurl fetchurl; }) // { version = 1; }; };
     };
   };
diff --git a/pkgs/tools/networking/davix/default.nix b/pkgs/tools/networking/davix/default.nix
index d3ae2cd02c27..209b4e9d7a15 100644
--- a/pkgs/tools/networking/davix/default.nix
+++ b/pkgs/tools/networking/davix/default.nix
@@ -35,8 +35,8 @@ stdenv.mkDerivation rec {
     boost
     curl
   ]
-  ++ lib.optional stdenv.isDarwin Security
-  ++ lib.optional (!stdenv.isDarwin) libuuid
+  ++ lib.optional stdenv.hostPlatform.isDarwin Security
+  ++ lib.optional (!stdenv.hostPlatform.isDarwin) libuuid
   ++ lib.optional (enableThirdPartyCopy) gsoap;
 
   # using the url below since the github release page states
diff --git a/pkgs/tools/networking/dcap/default.nix b/pkgs/tools/networking/dcap/default.nix
index 4045748fc447..de3a484f5dee 100644
--- a/pkgs/tools/networking/dcap/default.nix
+++ b/pkgs/tools/networking/dcap/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   outputs = [ "bin" "dev" "out" "man" "doc" ];
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "dCache access protocol client library";
     homepage = "https://github.com/dCache/dcap";
     changelog = "https://github.com/dCache/dcap/blob/master/ChangeLog";
diff --git a/pkgs/tools/networking/dd-agent/datadog-agent.nix b/pkgs/tools/networking/dd-agent/datadog-agent.nix
index 0b1d157af5d3..1fc91bf1f05a 100644
--- a/pkgs/tools/networking/dd-agent/datadog-agent.nix
+++ b/pkgs/tools/networking/dd-agent/datadog-agent.nix
@@ -120,6 +120,6 @@ in buildGo121Module rec {
     license     = licenses.bsd3;
     maintainers = with maintainers; [ thoughtpolice domenkozar ];
     # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/tools/networking/dhcpcd/default.nix b/pkgs/tools/networking/dhcpcd/default.nix
index 6221034dc285..d07cc72bed7e 100644
--- a/pkgs/tools/networking/dhcpcd/default.nix
+++ b/pkgs/tools/networking/dhcpcd/default.nix
@@ -24,9 +24,9 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [
     runtimeShellPackage # So patchShebangs finds a bash suitable for the installed scripts
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     udev
-  ] ++ lib.optionals stdenv.isFreeBSD [
+  ] ++ lib.optionals stdenv.hostPlatform.isFreeBSD [
     freebsd.libcapsicum
     freebsd.libcasper
   ];
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
   installFlags = [ "DBDIR=$(TMPDIR)/db" "SYSCONFDIR=${placeholder "out"}/etc" ];
 
   # Check that the udev plugin got built.
-  postInstall = lib.optionalString (udev != null && stdenv.isLinux) "[ -e ${placeholder "out"}/lib/dhcpcd/dev/udev.so ]";
+  postInstall = lib.optionalString (udev != null && stdenv.hostPlatform.isLinux) "[ -e ${placeholder "out"}/lib/dhcpcd/dev/udev.so ]";
 
   passthru = {
     inherit enablePrivSep;
diff --git a/pkgs/tools/networking/dnsmasq/default.nix b/pkgs/tools/networking/dnsmasq/default.nix
index 5c6d90b00a98..99744769fff6 100644
--- a/pkgs/tools/networking/dnsmasq/default.nix
+++ b/pkgs/tools/networking/dnsmasq/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, fetchurl, pkg-config, nettle
 , libidn, libnetfilter_conntrack, nftables, buildPackages
-, dbusSupport ? stdenv.isLinux
+, dbusSupport ? stdenv.hostPlatform.isLinux
 , dbus
 , nixosTests
 }:
@@ -11,7 +11,7 @@ let
     "-DHAVE_DNSSEC"
   ] ++ lib.optionals dbusSupport [
     "-DHAVE_DBUS"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "-DHAVE_CONNTRACK"
     "-DHAVE_NFTSET"
   ]);
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
 
   hardeningEnable = [ "pie" ];
 
-  postBuild = lib.optionalString stdenv.isLinux ''
+  postBuild = lib.optionalString stdenv.hostPlatform.isLinux ''
     make -C contrib/lease-tools
   '';
 
@@ -51,12 +51,12 @@ stdenv.mkDerivation rec {
   # module can create it in Nix-land?
   postInstall = ''
     install -Dm644 trust-anchors.conf $out/share/dnsmasq/trust-anchors.conf
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     install -Dm644 contrib/MacOSX-launchd/uk.org.thekelleys.dnsmasq.plist \
       $out/Library/LaunchDaemons/uk.org.thekelleys.dnsmasq.plist
     substituteInPlace $out/Library/LaunchDaemons/uk.org.thekelleys.dnsmasq.plist \
       --replace "/usr/local/sbin" "$out/bin"
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     install -Dm755 contrib/lease-tools/dhcp_lease_time $out/bin/dhcp_lease_time
     install -Dm755 contrib/lease-tools/dhcp_release $out/bin/dhcp_release
     install -Dm755 contrib/lease-tools/dhcp_release6 $out/bin/dhcp_release6
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ nettle libidn ]
     ++ lib.optionals dbusSupport [ dbus ]
-    ++ lib.optionals stdenv.isLinux [ libnetfilter_conntrack nftables ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libnetfilter_conntrack nftables ];
 
   passthru.tests = {
     prometheus-exporter = nixosTests.prometheus-exporters.dnsmasq;
diff --git a/pkgs/tools/networking/dnsmonster/default.nix b/pkgs/tools/networking/dnsmonster/default.nix
index e4a5d097f04a..0b32a8c90869 100644
--- a/pkgs/tools/networking/dnsmonster/default.nix
+++ b/pkgs/tools/networking/dnsmonster/default.nix
@@ -34,7 +34,7 @@ buildGoModule rec {
     changelog = "https://github.com/mosajjal/dnsmonster/releases/tag/v${version}";
     license = licenses.gpl2Only;
     maintainers = with maintainers; [ fab ];
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     mainProgram = "dnsmonster";
   };
 }
diff --git a/pkgs/tools/networking/dnstracer/default.nix b/pkgs/tools/networking/dnstracer/default.nix
index 30017b2b7620..8d1134cff46f 100644
--- a/pkgs/tools/networking/dnstracer/default.nix
+++ b/pkgs/tools/networking/dnstracer/default.nix
@@ -20,9 +20,9 @@ stdenv.mkDerivation rec {
     install -Dm755 -t $man/share/man/man8 dnstracer.8
   '';
 
-  buildInputs = [] ++ lib.optionals stdenv.isDarwin [ libresolv ];
+  buildInputs = [] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libresolv ];
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-lresolv";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-lresolv";
 
   meta = with lib; {
     description = "Determines where a given Domain Name Server (DNS) gets its information from, and follows the chain of DNS servers back to the servers which know the data";
diff --git a/pkgs/tools/networking/dogdns/default.nix b/pkgs/tools/networking/dogdns/default.nix
index e368e10715e6..397e87f23a10 100644
--- a/pkgs/tools/networking/dogdns/default.nix
+++ b/pkgs/tools/networking/dogdns/default.nix
@@ -28,9 +28,9 @@ rustPlatform.buildRustPackage rec {
   ];
 
   nativeBuildInputs = [ installShellFiles just pandoc ]
-    ++ lib.optionals stdenv.isLinux [ pkg-config ];
-  buildInputs = lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   outputs = [ "out" "man" ];
 
diff --git a/pkgs/tools/networking/drill/default.nix b/pkgs/tools/networking/drill/default.nix
index 005d24ac323f..3afaff496ad9 100644
--- a/pkgs/tools/networking/drill/default.nix
+++ b/pkgs/tools/networking/drill/default.nix
@@ -20,16 +20,16 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-96eUCg0mzgUFLOKxpwRfzj1jH2Z+aDohBTztvRVWln0=";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     pkg-config
   ];
 
   OPENSSL_LIB_DIR = "${lib.getLib openssl}/lib";
   OPENSSL_DIR="${lib.getDev openssl}";
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/tools/networking/edgedb/default.nix b/pkgs/tools/networking/edgedb/default.nix
index 58763cc39319..c5f360cd2505 100644
--- a/pkgs/tools/networking/edgedb/default.nix
+++ b/pkgs/tools/networking/edgedb/default.nix
@@ -52,7 +52,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs =
     [ curl ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       CoreServices
       Security
       libiconv
diff --git a/pkgs/tools/networking/fast-ssh/default.nix b/pkgs/tools/networking/fast-ssh/default.nix
index 59f61d9af710..e0b8d8775c10 100644
--- a/pkgs/tools/networking/fast-ssh/default.nix
+++ b/pkgs/tools/networking/fast-ssh/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-CJ3Xx5jaTD01Ai7YAY4vB7RB5lU1BIXq7530B6+KeX4=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "TUI tool to use the SSH config for connections";
diff --git a/pkgs/tools/networking/fastd/default.nix b/pkgs/tools/networking/fastd/default.nix
index 20f8adf71cf8..cafcf4bdaf50 100644
--- a/pkgs/tools/networking/fastd/default.nix
+++ b/pkgs/tools/networking/fastd/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
     libsodium
     libuecc
     openssl
-  ] ++ lib.optionals (stdenv.isLinux) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isLinux) [
     libmnl
   ];
 
diff --git a/pkgs/tools/networking/findomain/default.nix b/pkgs/tools/networking/findomain/default.nix
index e04699ff7458..7fed4c99daae 100644
--- a/pkgs/tools/networking/findomain/default.nix
+++ b/pkgs/tools/networking/findomain/default.nix
@@ -36,7 +36,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
 
diff --git a/pkgs/tools/networking/ghostunnel/default.nix b/pkgs/tools/networking/ghostunnel/default.nix
index 2d23839a3b71..ade3fe16e45a 100644
--- a/pkgs/tools/networking/ghostunnel/default.nix
+++ b/pkgs/tools/networking/ghostunnel/default.nix
@@ -33,7 +33,7 @@ buildGoModule rec {
   };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "TLS proxy with mutual authentication support for securing non-TLS backend applications";
     homepage = "https://github.com/ghostunnel/ghostunnel#readme";
     changelog = "https://github.com/ghostunnel/ghostunnel/releases/tag/v${version}";
diff --git a/pkgs/tools/networking/godspeed/default.nix b/pkgs/tools/networking/godspeed/default.nix
index 64441c1674dd..2d0e4e32dea2 100644
--- a/pkgs/tools/networking/godspeed/default.nix
+++ b/pkgs/tools/networking/godspeed/default.nix
@@ -27,7 +27,7 @@ buildGoModule rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Manager for reverse shells";
     homepage = "https://github.com/redcode-labs/GodSpeed";
     license = with licenses; [ mit ];
diff --git a/pkgs/tools/networking/gp-saml-gui/default.nix b/pkgs/tools/networking/gp-saml-gui/default.nix
index 105d5f6c68ba..f28306880f62 100644
--- a/pkgs/tools/networking/gp-saml-gui/default.nix
+++ b/pkgs/tools/networking/gp-saml-gui/default.nix
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     sha256 = "sha256-4MFHad1cuCWawy2hrqdXOgud0pXpYiV9J3Jwqyg4Udk=";
   };
 
-  buildInputs = lib.optional stdenv.isLinux glib-networking;
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux glib-networking;
 
   nativeBuildInputs = [ wrapGAppsHook3 gobject-introspection glib-networking ];
 
@@ -29,7 +29,7 @@ buildPythonPackage rec {
     requests
     pygobject3
     openconnect
-  ] ++ lib.optional stdenv.isLinux webkitgtk;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux webkitgtk;
 
   preFixup = ''
     gappsWrapperArgs+=(
diff --git a/pkgs/tools/networking/gping/default.nix b/pkgs/tools/networking/gping/default.nix
index fb8857afff72..5079ce509bb9 100644
--- a/pkgs/tools/networking/gping/default.nix
+++ b/pkgs/tools/networking/gping/default.nix
@@ -21,11 +21,11 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-pQ95sS2dGVzZUOyuUpJPamW7RLiUTGu9KgpWLg4wn/w=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security ];
 
   nativeBuildInputs = [ installShellFiles ];
 
-  nativeCheckInputs = lib.optionals stdenv.isLinux [ iputils ];
+  nativeCheckInputs = lib.optionals stdenv.hostPlatform.isLinux [ iputils ];
 
   postInstall = ''
     installManPage gping.1
diff --git a/pkgs/tools/networking/grpc_cli/default.nix b/pkgs/tools/networking/grpc_cli/default.nix
index 24e22436b20d..d7a01b92dc45 100644
--- a/pkgs/tools/networking/grpc_cli/default.nix
+++ b/pkgs/tools/networking/grpc_cli/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ curl numactl ];
   cmakeFlags = [ "-DgRPC_BUILD_TESTS=ON" ];
   makeFlags = [ "grpc_cli" ];
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isAarch64 "-Wno-error=format-security";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isAarch64 "-Wno-error=format-security";
   installPhase = ''
     runHook preInstall
 
diff --git a/pkgs/tools/networking/haproxy/default.nix b/pkgs/tools/networking/haproxy/default.nix
index f2dc5dfd6e02..90d5bc12cadb 100644
--- a/pkgs/tools/networking/haproxy/default.nix
+++ b/pkgs/tools/networking/haproxy/default.nix
@@ -42,9 +42,9 @@ in stdenv.mkDerivation (finalAttrs: {
   # TODO: make it work on bsd as well
   makeFlags = [
     "PREFIX=${placeholder "out"}"
-    ("TARGET=" + (if stdenv.isSunOS then "solaris"
-    else if stdenv.isLinux then "linux-glibc"
-    else if stdenv.isDarwin then "osx"
+    ("TARGET=" + (if stdenv.hostPlatform.isSunOS then "solaris"
+    else if stdenv.hostPlatform.isLinux then "linux-glibc"
+    else if stdenv.hostPlatform.isDarwin then "osx"
     else "generic"))
   ];
 
@@ -66,7 +66,7 @@ in stdenv.mkDerivation (finalAttrs: {
     "LUA_LIB_NAME=lua"
     "LUA_LIB=${lua5_4}/lib"
     "LUA_INC=${lua5_4}/include"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "USE_SYSTEMD=yes"
     "USE_GETADDRINFO=1"
   ] ++ lib.optionals withPrometheusExporter [
diff --git a/pkgs/tools/networking/hping/default.nix b/pkgs/tools/networking/hping/default.nix
index 528bf11e7d94..10bd63d48927 100644
--- a/pkgs/tools/networking/hping/default.nix
+++ b/pkgs/tools/networking/hping/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   postPatch = ''
     substituteInPlace Makefile.in --replace "gcc" "$CC"
     substituteInPlace version.c --replace "RELEASE_DATE" "\"$version\""
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     sed -i -e 's|#include <net/bpf.h>|#include <pcap/bpf.h>|' \
       libpcap_stuff.c script.c
   '' + lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
diff --git a/pkgs/tools/networking/httplz/default.nix b/pkgs/tools/networking/httplz/default.nix
index e83570f62f04..cb0e51632784 100644
--- a/pkgs/tools/networking/httplz/default.nix
+++ b/pkgs/tools/networking/httplz/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
     ronn
   ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/networking/ifstat-legacy/default.nix b/pkgs/tools/networking/ifstat-legacy/default.nix
index 25c7dbb60ec4..f37f33a23f4b 100644
--- a/pkgs/tools/networking/ifstat-legacy/default.nix
+++ b/pkgs/tools/networking/ifstat-legacy/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "01zmv6vk5kh5xmd563xws8a1qnxjb6b6kv59yzz9r3rrghxhd6c5";
   };
 
-  buildInputs = lib.optional stdenv.isLinux net-snmp;
+  buildInputs = lib.optional stdenv.hostPlatform.isLinux net-snmp;
 
   nativeBuildInputs = [ autoreconfHook ];
 
diff --git a/pkgs/tools/networking/iftop/default.nix b/pkgs/tools/networking/iftop/default.nix
index c40a8ee51238..fdda3245b8b1 100644
--- a/pkgs/tools/networking/iftop/default.nix
+++ b/pkgs/tools/networking/iftop/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   # Explicitly link against libgcc_s, to work around the infamous
   # "libgcc_s.so.1 must be installed for pthread_cancel to work".
-  LDFLAGS = lib.optionalString stdenv.isLinux "-lgcc_s";
+  LDFLAGS = lib.optionalString stdenv.hostPlatform.isLinux "-lgcc_s";
 
   preConfigure = ''
     cp ${automake}/share/automake*/config.{sub,guess} config
diff --git a/pkgs/tools/networking/ifwifi/default.nix b/pkgs/tools/networking/ifwifi/default.nix
index e62266c2dc6b..645000dffc73 100644
--- a/pkgs/tools/networking/ifwifi/default.nix
+++ b/pkgs/tools/networking/ifwifi/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-TL7ZsRbpRdYymJHuoCUCqe/U3Vacb9mtKFh85IOl+PA=";
 
   nativeBuildInputs = [ makeWrapper ];
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   postInstall = ''
     wrapProgram "$out/bin/ifwifi" \
@@ -22,8 +22,8 @@ rustPlatform.buildRustPackage rec {
         # `ifwifi` runtime dep
         [ networkmanager ]
         # `wifiscanner` crate's runtime deps
-        ++ (lib.optional stdenv.isLinux iw)
-        # ++ (lib.optional stdenv.isDarwin airport) # airport isn't packaged
+        ++ (lib.optional stdenv.hostPlatform.isLinux iw)
+        # ++ (lib.optional stdenv.hostPlatform.isDarwin airport) # airport isn't packaged
       )}"
   '';
 
diff --git a/pkgs/tools/networking/inetutils/default.nix b/pkgs/tools/networking/inetutils/default.nix
index 5bbe7e4f8d40..6aedb474c612 100644
--- a/pkgs/tools/networking/inetutils/default.nix
+++ b/pkgs/tools/networking/inetutils/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ help2man perl /* for `whois' */ ];
   buildInputs = [ ncurses /* for `talk' */ libxcrypt ];
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     # This is a temporary workaround for missing headers in the 10.12 SDK to avoid a mass rebuild.
     # A commit to revert this change will be included in the fix PR targeting staging.
     NIX_CFLAGS_COMPILE = "-Wno-error=implicit-function-declaration";
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
     "--disable-rsh"
     "--disable-rlogin"
     "--disable-rexec"
-  ] ++ lib.optional stdenv.isDarwin  "--disable-servers";
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin  "--disable-servers";
 
   doCheck = true;
 
diff --git a/pkgs/tools/networking/innernet/default.nix b/pkgs/tools/networking/innernet/default.nix
index 0e6480f58dbe..4627ef34367c 100644
--- a/pkgs/tools/networking/innernet/default.nix
+++ b/pkgs/tools/networking/innernet/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     libiconv
   ];
@@ -40,7 +40,7 @@ rustPlatform.buildRustPackage rec {
     installManPage doc/innernet.8.gz
     installShellCompletion doc/innernet.completions.{bash,fish,zsh}
     installShellCompletion doc/innernet-server.completions.{bash,fish,zsh}
-  '' + (lib.optionalString stdenv.isLinux ''
+  '' + (lib.optionalString stdenv.hostPlatform.isLinux ''
     find . -regex '.*\.\(target\|service\)' | xargs install -Dt $out/lib/systemd/system
     find $out/lib/systemd/system -type f | xargs sed -i "s|/usr/bin/innernet|$out/bin/innernet|"
   '');
diff --git a/pkgs/tools/networking/iperf/3.nix b/pkgs/tools/networking/iperf/3.nix
index 8952c4004fd3..a73184265f56 100644
--- a/pkgs/tools/networking/iperf/3.nix
+++ b/pkgs/tools/networking/iperf/3.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-hEBMqEMbWV6GxHPY8j2LsQKBAAHxX+r2EO/9OzGHiKo=";
   };
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isLinux [ lksctp-tools ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isLinux [ lksctp-tools ];
   configureFlags = [ "--with-openssl=${openssl.dev}" ];
 
   outputs = [
diff --git a/pkgs/tools/networking/isync/default.nix b/pkgs/tools/networking/isync/default.nix
index a3e035c30030..280be724a8aa 100644
--- a/pkgs/tools/networking/isync/default.nix
+++ b/pkgs/tools/networking/isync/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ pkg-config perl ]
     ++ lib.optionals withCyrusSaslXoauth2 [ makeWrapper ];
   buildInputs = [ openssl db cyrus_sasl zlib ]
-    ++ lib.optionals stdenv.isDarwin [ Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   postInstall = lib.optionalString withCyrusSaslXoauth2 ''
     wrapProgram "$out/bin/mbsync" \
diff --git a/pkgs/tools/networking/jwhois/default.nix b/pkgs/tools/networking/jwhois/default.nix
index b384043cc23e..50959152d710 100644
--- a/pkgs/tools/networking/jwhois/default.nix
+++ b/pkgs/tools/networking/jwhois/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
   # Work around error from <stdio.h> on aarch64-darwin:
   #     error: 'TARGET_OS_IPHONE' is not defined, evaluates to 0 [-Werror,-Wundef-prefix=TARGET_OS_]
   # TODO: this should probably be fixed at a lower level than this?
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-undef-prefix";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-undef-prefix";
 
   meta = {
     description = "Client for the WHOIS protocol allowing you to query the owner of a domain name";
diff --git a/pkgs/tools/networking/lftp/default.nix b/pkgs/tools/networking/lftp/default.nix
index a3bf468f21e7..482347a5ab98 100644
--- a/pkgs/tools/networking/lftp/default.nix
+++ b/pkgs/tools/networking/lftp/default.nix
@@ -16,9 +16,9 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ openssl readline zlib libidn2 gmp libiconv libunistring gettext ];
 
-  hardeningDisable = lib.optional stdenv.isDarwin "format";
+  hardeningDisable = lib.optional stdenv.hostPlatform.isDarwin "format";
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     # Required to build with clang 16 or `configure` will fail to detect several standard functions.
     NIX_CFLAGS_COMPILE = "-Wno-error=implicit-function-declaration";
   };
diff --git a/pkgs/tools/networking/libreswan/default.nix b/pkgs/tools/networking/libreswan/default.nix
index 7dac682407bd..c56cea33abf5 100644
--- a/pkgs/tools/networking/libreswan/default.nix
+++ b/pkgs/tools/networking/libreswan/default.nix
@@ -70,7 +70,7 @@ stdenv.mkDerivation rec {
     libcap_ng libxcrypt curl nspr nss ldns
     # needed to patch shebangs
     python3 bash
-  ] ++ lib.optional stdenv.isLinux libselinux;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux libselinux;
 
   prePatch = ''
     # Replace wget with curl to save a dependency
diff --git a/pkgs/tools/networking/lychee/default.nix b/pkgs/tools/networking/lychee/default.nix
index bc6f1d3a1f39..0ecd2a0033c9 100644
--- a/pkgs/tools/networking/lychee/default.nix
+++ b/pkgs/tools/networking/lychee/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
   checkFlags = [
     #  Network errors for all of these tests
diff --git a/pkgs/tools/networking/magic-wormhole-rs/default.nix b/pkgs/tools/networking/magic-wormhole-rs/default.nix
index fc0ceebc714e..6cc7af7e1775 100644
--- a/pkgs/tools/networking/magic-wormhole-rs/default.nix
+++ b/pkgs/tools/networking/magic-wormhole-rs/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-x6aEas3vmdI24nOys+Y+vuwY7k5cYRAj9oOH73zyV+A=";
 
   buildInputs = [ libxcb ]
-    ++ lib.optionals stdenv.isDarwin [ Security AppKit ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security AppKit ];
 
   nativeBuildInputs = [ installShellFiles ];
 
diff --git a/pkgs/tools/networking/mailutils/default.nix b/pkgs/tools/networking/mailutils/default.nix
index 919b4dda863a..c9979a0fee5f 100644
--- a/pkgs/tools/networking/mailutils/default.nix
+++ b/pkgs/tools/networking/mailutils/default.nix
@@ -67,7 +67,7 @@ stdenv.mkDerivation rec {
     readline
     sasl
     libxcrypt
-  ] ++ lib.optionals stdenv.isLinux [ nettools ]
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ nettools ]
   ++ lib.optionals pythonSupport [ python3 ]
   ++ lib.optionals guileSupport [ guile_2_2 ];
 
@@ -100,7 +100,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional (!guileSupport) "--without-guile";
 
   nativeCheckInputs = [ dejagnu mkpasswd ];
-  doCheck = !stdenv.isDarwin; # ERROR: All 46 tests were run, 46 failed unexpectedly.
+  doCheck = !stdenv.hostPlatform.isDarwin; # ERROR: All 46 tests were run, 46 failed unexpectedly.
   doInstallCheck = false; # fails
 
   preCheck = ''
diff --git a/pkgs/tools/networking/miniupnpc/default.nix b/pkgs/tools/networking/miniupnpc/default.nix
index 6942e682a813..378bab745166 100644
--- a/pkgs/tools/networking/miniupnpc/default.nix
+++ b/pkgs/tools/networking/miniupnpc/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
     (lib.cmakeBool "UPNPC_BUILD_STATIC" stdenv.hostPlatform.isStatic)
   ];
 
-  doCheck = !stdenv.isFreeBSD;
+  doCheck = !stdenv.hostPlatform.isFreeBSD;
 
   postInstall = ''
     mv $out/bin/upnpc-* $out/bin/upnpc
diff --git a/pkgs/tools/networking/mole/default.nix b/pkgs/tools/networking/mole/default.nix
index e5585be469fc..dca72a66b1f8 100644
--- a/pkgs/tools/networking/mole/default.nix
+++ b/pkgs/tools/networking/mole/default.nix
@@ -28,7 +28,7 @@ buildGoModule rec {
     homepage = "https://github.com/davrodpin/mole";
     license = with licenses; [ mit ];
     maintainers = with maintainers; [ fab ];
-    broken = stdenv.isDarwin; # build fails with go > 1.17
+    broken = stdenv.hostPlatform.isDarwin; # build fails with go > 1.17
     mainProgram = "mole";
   };
 }
diff --git a/pkgs/tools/networking/mosh/default.nix b/pkgs/tools/networking/mosh/default.nix
index 908307a3b6a8..230122a2574b 100644
--- a/pkgs/tools/networking/mosh/default.nix
+++ b/pkgs/tools/networking/mosh/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, fetchFromGitHub, zlib, protobuf, ncurses, pkg-config
 , makeWrapper, perl, openssl, autoreconfHook, openssh, bash-completion, fetchpatch
-, withUtempter ? stdenv.isLinux && !stdenv.hostPlatform.isMusl, libutempter }:
+, withUtempter ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isMusl, libutempter }:
 
 stdenv.mkDerivation rec {
   pname = "mosh";
diff --git a/pkgs/tools/networking/mozwire/default.nix b/pkgs/tools/networking/mozwire/default.nix
index 40c6d3ec7827..800ea3c48f14 100644
--- a/pkgs/tools/networking/mozwire/default.nix
+++ b/pkgs/tools/networking/mozwire/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-2i8C1XgfI3MXnwXZzY6n8tIcw45G9h3vZqRlFaVoLH0=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
     Security
   ];
diff --git a/pkgs/tools/networking/mtr/default.nix b/pkgs/tools/networking/mtr/default.nix
index d36dcef4f080..42b79f978fdf 100644
--- a/pkgs/tools/networking/mtr/default.nix
+++ b/pkgs/tools/networking/mtr/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ ncurses jansson ]
     ++ lib.optional withGtk gtk3
-    ++ lib.optional stdenv.isLinux libcap;
+    ++ lib.optional stdenv.hostPlatform.isLinux libcap;
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/tools/networking/narrowlink/default.nix b/pkgs/tools/networking/narrowlink/default.nix
index 62d9bd369ee7..531b0e7f60c9 100644
--- a/pkgs/tools/networking/narrowlink/default.nix
+++ b/pkgs/tools/networking/narrowlink/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
     rustPlatform.bindgenHook
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.IOKit
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/tools/networking/nbd/default.nix b/pkgs/tools/networking/nbd/default.nix
index 68bcc6265558..e2924665bd31 100644
--- a/pkgs/tools/networking/nbd/default.nix
+++ b/pkgs/tools/networking/nbd/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     glib
     gnutls
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     libnl
     linuxHeaders
   ];
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
   # ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
   env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=implicit-function-declaration";
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   passthru.tests = {
     test = nixosTests.nbd;
diff --git a/pkgs/tools/networking/ncftp/default.nix b/pkgs/tools/networking/ncftp/default.nix
index c31e6333b684..883d2e48afe3 100644
--- a/pkgs/tools/networking/ncftp/default.nix
+++ b/pkgs/tools/networking/ncftp/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   #     gpshare.o:(.bss+0x0): first defined here
   env.NIX_CFLAGS_COMPILE = toString ([ "-fcommon" ]
     # these are required for the configure script to work with clang
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "-Wno-implicit-int"
       "-Wno-implicit-function-declaration"
     ]);
diff --git a/pkgs/tools/networking/ndjbdns/default.nix b/pkgs/tools/networking/ndjbdns/default.nix
index e5a3837657b1..5619c5b5c37b 100644
--- a/pkgs/tools/networking/ndjbdns/default.nix
+++ b/pkgs/tools/networking/ndjbdns/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ ]
-    ++ lib.optional stdenv.isLinux systemd;
+    ++ lib.optional stdenv.hostPlatform.isLinux systemd;
 
   meta = with lib; {
     description = "Brand new release of the Djbdns";
diff --git a/pkgs/tools/networking/netbird/default.nix b/pkgs/tools/networking/netbird/default.nix
index 18e16956724d..cffab15b4993 100644
--- a/pkgs/tools/networking/netbird/default.nix
+++ b/pkgs/tools/networking/netbird/default.nix
@@ -44,13 +44,13 @@ buildGoModule rec {
 
   nativeBuildInputs = [ installShellFiles ] ++ lib.optional ui pkg-config;
 
-  buildInputs = lib.optionals (stdenv.isLinux && ui) [
+  buildInputs = lib.optionals (stdenv.hostPlatform.isLinux && ui) [
     gtk3
     libayatana-appindicator
     libX11
     libXcursor
     libXxf86vm
-  ] ++ lib.optionals (stdenv.isDarwin && ui) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && ui) [
     Cocoa
     IOKit
     Kernel
@@ -88,7 +88,7 @@ buildGoModule rec {
           --fish <($out/bin/${binary} completion fish) \
           --zsh <($out/bin/${binary} completion zsh)
       '')
-      modules) + lib.optionalString (stdenv.isLinux && ui) ''
+      modules) + lib.optionalString (stdenv.hostPlatform.isLinux && ui) ''
     mkdir -p $out/share/pixmaps
     cp $src/client/ui/netbird-systemtray-connected.png $out/share/pixmaps/netbird.png
 
diff --git a/pkgs/tools/networking/netcat-openbsd/default.nix b/pkgs/tools/networking/netcat-openbsd/default.nix
index 3f561716ede6..ec82ec16915f 100644
--- a/pkgs/tools/networking/netcat-openbsd/default.nix
+++ b/pkgs/tools/networking/netcat-openbsd/default.nix
@@ -45,6 +45,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     mainProgram = "nc";
     # never built on aarch64-darwin, x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/networking/notemap/default.nix b/pkgs/tools/networking/notemap/default.nix
index 726b24469ab5..0611665d6618 100644
--- a/pkgs/tools/networking/notemap/default.nix
+++ b/pkgs/tools/networking/notemap/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     libressl
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     memstreamHook
   ];
 
diff --git a/pkgs/tools/networking/ntp/default.nix b/pkgs/tools/networking/ntp/default.nix
index 1ba389e38c02..2321455b8bbb 100644
--- a/pkgs/tools/networking/ntp/default.nix
+++ b/pkgs/tools/networking/ntp/default.nix
@@ -16,10 +16,10 @@ stdenv.mkDerivation rec {
     "--with-openssl-incdir=${openssl.dev}/include"
     "--enable-ignore-dns-errors"
     "--with-yielding-select=yes"
-  ] ++ lib.optional stdenv.isLinux "--enable-linuxcaps";
+  ] ++ lib.optional stdenv.hostPlatform.isLinux "--enable-linuxcaps";
 
   buildInputs = [ openssl perl ]
-    ++ lib.optionals stdenv.isLinux [ pps-tools libcap ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ pps-tools libcap ];
 
   hardeningEnable = [ "pie" ];
 
diff --git a/pkgs/tools/networking/ockam/default.nix b/pkgs/tools/networking/ockam/default.nix
index a6d8affd4dc5..aa983c12a411 100644
--- a/pkgs/tools/networking/ockam/default.nix
+++ b/pkgs/tools/networking/ockam/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage {
   cargoHash = "sha256-yOSCkOIprQoAGxPi1jsHPmQ9bVaudSNw13jL4jTNehY=";
   nativeBuildInputs = [ git pkg-config ];
   buildInputs = [ openssl dbus ]
-    ++ lib.optionals stdenv.isDarwin [ AppKit Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ AppKit Security ];
 
   passthru.updateScript = nix-update-script { };
 
diff --git a/pkgs/tools/networking/oha/default.nix b/pkgs/tools/networking/oha/default.nix
index 71bc43135455..efd8fe7534ac 100644
--- a/pkgs/tools/networking/oha/default.nix
+++ b/pkgs/tools/networking/oha/default.nix
@@ -20,13 +20,13 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-ks7n/x3RhjQbITL2hxiFkjxpZ5tcYMUyyfR/T7Kq/uU=";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/networking/onetun/default.nix b/pkgs/tools/networking/onetun/default.nix
index 4bc18cee4662..61f2ce7f3f45 100644
--- a/pkgs/tools/networking/onetun/default.nix
+++ b/pkgs/tools/networking/onetun/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-TRfr4riMzR/MbsV2RiQNlPoPLhHK5EScNBCeyyamfgE=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/tools/networking/openconnect/common.nix b/pkgs/tools/networking/openconnect/common.nix
index 0dccb0e92fff..82040f64a897 100644
--- a/pkgs/tools/networking/openconnect/common.nix
+++ b/pkgs/tools/networking/openconnect/common.nix
@@ -16,7 +16,7 @@
 , pcsclite
 , vpnc-scripts
 , PCSC
-, useDefaultExternalBrowser ? stdenv.isLinux && stdenv.buildPlatform == stdenv.hostPlatform # xdg-utils doesn't cross-compile
+, useDefaultExternalBrowser ? stdenv.hostPlatform.isLinux && stdenv.buildPlatform == stdenv.hostPlatform # xdg-utils doesn't cross-compile
 , xdg-utils
 , autoreconfHook
 }:
@@ -34,8 +34,8 @@ stdenv.mkDerivation {
   ];
 
   buildInputs = [ gmp libxml2 stoken zlib (if useOpenSSL then openssl else gnutls) ]
-    ++ lib.optional stdenv.isDarwin PCSC
-    ++ lib.optionals stdenv.isLinux [ p11-kit pcsclite ]
+    ++ lib.optional stdenv.hostPlatform.isDarwin PCSC
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ p11-kit pcsclite ]
     ++ lib.optional useDefaultExternalBrowser xdg-utils;
   nativeBuildInputs = [ pkg-config autoreconfHook ];
 
diff --git a/pkgs/tools/networking/openfortivpn/default.nix b/pkgs/tools/networking/openfortivpn/default.nix
index 91ec26c96a61..5d416e01601f 100644
--- a/pkgs/tools/networking/openfortivpn/default.nix
+++ b/pkgs/tools/networking/openfortivpn/default.nix
@@ -7,7 +7,7 @@
 , ppp
 , systemd
 , withSystemd ? lib.meta.availableOn stdenv.hostPlatform systemd
-, withPpp ? stdenv.isLinux
+, withPpp ? stdenv.hostPlatform.isLinux
 }:
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/tools/networking/openssh/common.nix b/pkgs/tools/networking/openssh/common.nix
index 496ea270c81e..c1cf38dfa87e 100644
--- a/pkgs/tools/networking/openssh/common.nix
+++ b/pkgs/tools/networking/openssh/common.nix
@@ -98,7 +98,7 @@ stdenv.mkDerivation (finalAttrs: {
   ] ++ lib.optional (etcDir != null) "--sysconfdir=${etcDir}"
     ++ lib.optional withFIDO "--with-security-key-builtin=yes"
     ++ lib.optional withKerberos (assert krb5 != null; "--with-kerberos5=${lib.getDev krb5}")
-    ++ lib.optional stdenv.isDarwin "--disable-libutil"
+    ++ lib.optional stdenv.hostPlatform.isDarwin "--disable-libutil"
     ++ lib.optional (!linkOpenssl) "--without-openssl"
     ++ lib.optional withLdns "--with-ldns"
     ++ extraConfigureFlags;
@@ -113,7 +113,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   doCheck = false;
   enableParallelChecking = false;
-  nativeCheckInputs = [ openssl ] ++ lib.optional (!stdenv.isDarwin) hostname;
+  nativeCheckInputs = [ openssl ] ++ lib.optional (!stdenv.hostPlatform.isDarwin) hostname;
   preCheck = lib.optionalString (stdenv.hostPlatform == stdenv.buildPlatform) ''
     # construct a dummy HOME
     export HOME=$(realpath ../dummy-home)
@@ -161,7 +161,7 @@ stdenv.mkDerivation (finalAttrs: {
   # integration tests hard to get working on darwin with its shaky
   # sandbox
   # t-exec tests fail on musl
-  checkTarget = lib.optional (!stdenv.isDarwin && !stdenv.hostPlatform.isMusl) "t-exec"
+  checkTarget = lib.optional (!stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isMusl) "t-exec"
     # other tests are less demanding of the environment
     ++ [ "unit" "file-tests" "interop-tests" ];
 
diff --git a/pkgs/tools/networking/openvpn/default.nix b/pkgs/tools/networking/openvpn/default.nix
index d4035df7ce7a..c7fa7a222f83 100644
--- a/pkgs/tools/networking/openvpn/default.nix
+++ b/pkgs/tools/networking/openvpn/default.nix
@@ -31,13 +31,13 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ lz4 lzo openssl ]
-    ++ optionals stdenv.isLinux [ libcap_ng libnl pam ]
+    ++ optionals stdenv.hostPlatform.isLinux [ libcap_ng libnl pam ]
     ++ optional useSystemd systemd
     ++ optional pkcs11Support pkcs11helper;
 
   configureFlags = optional useSystemd "--enable-systemd"
     ++ optional pkcs11Support "--enable-pkcs11"
-    ++ optional stdenv.isDarwin "--disable-plugin-auth-pam";
+    ++ optional stdenv.hostPlatform.isDarwin "--disable-plugin-auth-pam";
 
   # We used to vendor the update-systemd-resolved script inside libexec,
   # but a separate package was made, that uses libexec/openvpn. Copy it
diff --git a/pkgs/tools/networking/p2p/amule/default.nix b/pkgs/tools/networking/p2p/amule/default.nix
index d5446fedb550..608ce21c9997 100644
--- a/pkgs/tools/networking/p2p/amule/default.nix
+++ b/pkgs/tools/networking/p2p/amule/default.nix
@@ -98,6 +98,6 @@ stdenv.mkDerivation rec {
     maintainers = [ ];
     platforms = platforms.unix;
     # Undefined symbols for architecture arm64: "_FSFindFolder"
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/networking/pdnsd/default.nix b/pkgs/tools/networking/pdnsd/default.nix
index 26001c37e982..4a09295b79bf 100644
--- a/pkgs/tools/networking/pdnsd/default.nix
+++ b/pkgs/tools/networking/pdnsd/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   patches =
     # fix build with linux headers >= 5.13
-    lib.optional stdenv.isLinux
+    lib.optional stdenv.hostPlatform.isLinux
       (fetchpatch {
         name = "fix-build-linux-headers-gte-5.13.patch";
         url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/net-dns/pdnsd/files/pdnsd-1.2.9a-linux-5.13_build_fix.patch?id=7ce35657f269c3b7016e8940ad36e59cf06e12a4";
diff --git a/pkgs/tools/networking/phantomsocks/default.nix b/pkgs/tools/networking/phantomsocks/default.nix
index bb8aad8740df..1a720efb9381 100644
--- a/pkgs/tools/networking/phantomsocks/default.nix
+++ b/pkgs/tools/networking/phantomsocks/default.nix
@@ -4,8 +4,8 @@
 , stdenv
 , libpcap
   # Cann't be build with both pcap and rawsocket tags
-, withPcap ? (!stdenv.isLinux && !withRawsocket)
-, withRawsocket ? (stdenv.isLinux && !withPcap)
+, withPcap ? (!stdenv.hostPlatform.isLinux && !withRawsocket)
+, withRawsocket ? (stdenv.hostPlatform.isLinux && !withPcap)
 }:
 
 buildGoModule rec {
diff --git a/pkgs/tools/networking/phodav/default.nix b/pkgs/tools/networking/phodav/default.nix
index f4bb16493901..ac84016c4abc 100644
--- a/pkgs/tools/networking/phodav/default.nix
+++ b/pkgs/tools/networking/phodav/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
     "-Dudevrulesdir=${placeholder "out"}/lib/udev/rules.d"
   ];
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-lintl";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-lintl";
 
   passthru = {
     updateScript = gnome.updateScript {
diff --git a/pkgs/tools/networking/pritunl-client/default.nix b/pkgs/tools/networking/pritunl-client/default.nix
index 697cc08ec4f6..535919563158 100644
--- a/pkgs/tools/networking/pritunl-client/default.nix
+++ b/pkgs/tools/networking/pritunl-client/default.nix
@@ -48,7 +48,7 @@
     postPatch = ''
       sed -Ei service/profile/scripts.go \
         -e 's|#!\s*(/usr)?/bin/(env )?bash\b|#! ${runtimeShell}|g'
-    '' + lib.optionalString stdenv.isLinux ''
+    '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       sed -Ei service/profile/scripts.go \
         -e 's|(/usr)?/s?bin/busctl\b|busctl|g' \
         -e 's|(/usr)?/s?bin/resolvectl\b|resolvectl|g' \
@@ -57,7 +57,7 @@
 
     postInstall = ''
       mv $out/bin/service $out/bin/pritunl-client-service
-    '' + lib.optionalString stdenv.isLinux ''
+    '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       mkdir -p $out/lib/systemd/system/
       cp $src/resources_linux/pritunl-client.service $out/lib/systemd/system/
       substituteInPlace $out/lib/systemd/system/pritunl-client.service \
@@ -70,7 +70,7 @@
         which
         gnused
         gnugrep
-      ] ++ lib.optionals stdenv.isLinux [
+      ] ++ lib.optionals stdenv.hostPlatform.isLinux [
         openresolv
         systemd
         iproute2
@@ -83,7 +83,7 @@
           --prefix PATH : ${lib.makeBinPath hookScriptsDeps} \
           --add-flags "--setenv PATH \$PATH"
       '';
-    in lib.optionalString stdenv.isLinux ''
+    in lib.optionalString stdenv.hostPlatform.isLinux ''
       wrapProgram $out/bin/pritunl-client-service \
         --prefix PATH : "${lib.makeBinPath ([ openvpn-wrapped ])}"
     '';
@@ -113,7 +113,7 @@ in stdenv.mkDerivation {
     makeWrapper ${electron}/bin/electron $out/bin/pritunl-client-electron \
       --add-flags $out/lib/pritunl_client_electron
 
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     mkdir -p $out/lib/systemd/system/
     ln -s ${service}/lib/systemd/system/pritunl-client.service $out/lib/systemd/system/
 
diff --git a/pkgs/tools/networking/quicktun/default.nix b/pkgs/tools/networking/quicktun/default.nix
index 2c28e3665698..2dcb9b21b623 100644
--- a/pkgs/tools/networking/quicktun/default.nix
+++ b/pkgs/tools/networking/quicktun/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation {
   passthru.tests.quicktun = nixosTests.quicktun;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Very simple, yet secure VPN software";
     homepage = "http://wiki.ucis.nl/QuickTun";
     maintainers = with maintainers; [ h7x4 ];
diff --git a/pkgs/tools/networking/restish/default.nix b/pkgs/tools/networking/restish/default.nix
index f8a1cfd466ea..a1fd639b72c1 100644
--- a/pkgs/tools/networking/restish/default.nix
+++ b/pkgs/tools/networking/restish/default.nix
@@ -21,10 +21,10 @@ buildGoModule rec {
 
   vendorHash = "sha256-qeArar0WnMACUnKBlC+PcFeJPzofwbK440A4M/rQ04U=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
     darwin.apple_sdk.frameworks.Kernel
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     xorg.libX11
     xorg.libXcursor
     xorg.libXi
diff --git a/pkgs/tools/networking/rewrk/default.nix b/pkgs/tools/networking/rewrk/default.nix
index a76d66611773..c4f4755f4b5b 100644
--- a/pkgs/tools/networking/rewrk/default.nix
+++ b/pkgs/tools/networking/rewrk/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
     ln -s ${./Cargo.lock} Cargo.lock
   '';
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/networking/rustcat/default.nix b/pkgs/tools/networking/rustcat/default.nix
index 9848dbdd17b1..dba12bf58ac4 100644
--- a/pkgs/tools/networking/rustcat/default.nix
+++ b/pkgs/tools/networking/rustcat/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-wqoU9UfXDmf7KIHgFif5rZfZY8Zu0SsaMVfwTtXLzHg=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "Port listener and reverse shell";
diff --git a/pkgs/tools/networking/s3rs/default.nix b/pkgs/tools/networking/s3rs/default.nix
index ec4725e9f2d0..ad343c00ca60 100644
--- a/pkgs/tools/networking/s3rs/default.nix
+++ b/pkgs/tools/networking/s3rs/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ python3 perl pkg-config ];
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "S3 cli client with multi configs with diffent provider";
diff --git a/pkgs/tools/networking/shadowsocks-rust/default.nix b/pkgs/tools/networking/shadowsocks-rust/default.nix
index 01b42fc57b97..18c7ca632d0b 100644
--- a/pkgs/tools/networking/shadowsocks-rust/default.nix
+++ b/pkgs/tools/networking/shadowsocks-rust/default.nix
@@ -13,10 +13,10 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-2uYLrYFuzvaOZxw2hN4DcrEbwW5rnXxqKoI2q6yZaGU=";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
 
-  buildInputs = lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security CoreServices ];
 
   buildFeatures = [
     "trust-dns"
diff --git a/pkgs/tools/networking/siege/default.nix b/pkgs/tools/networking/siege/default.nix
index 6a1ce2f4a028..b26b21146175 100644
--- a/pkgs/tools/networking/siege/default.nix
+++ b/pkgs/tools/networking/siege/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-MJ1Ym/yBm28V0uXoWRs8DG9pNiT1Bg7qwGek2ad1fek=";
   };
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isLinux [
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isLinux [
     "-lgcc_s"
   ];
 
diff --git a/pkgs/tools/networking/slowlorust/default.nix b/pkgs/tools/networking/slowlorust/default.nix
index c48257130b2d..d5e924d10272 100644
--- a/pkgs/tools/networking/slowlorust/default.nix
+++ b/pkgs/tools/networking/slowlorust/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-Wu1mm+yJw2SddddxC5NfnMWLr+dplnRxH3AJ1/mTAKM=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     Security
   ];
 
diff --git a/pkgs/tools/networking/sockperf/default.nix b/pkgs/tools/networking/sockperf/default.nix
index ed071322f2f8..6181138a7b6d 100644
--- a/pkgs/tools/networking/sockperf/default.nix
+++ b/pkgs/tools/networking/sockperf/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Network Benchmarking Utility";
     homepage = "https://github.com/Mellanox/sockperf";
     license = licenses.bsd3;
diff --git a/pkgs/tools/networking/speedtest-rs/default.nix b/pkgs/tools/networking/speedtest-rs/default.nix
index b70aaa95aa5b..322d735e645a 100644
--- a/pkgs/tools/networking/speedtest-rs/default.nix
+++ b/pkgs/tools/networking/speedtest-rs/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   buildInputs = [ openssl ] ++
-    lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.Security
       darwin.apple_sdk.frameworks.SystemConfiguration
     ];
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-0YPCBzidE1+LgIYk457eSoerLvQuuZs9cTd7uUt1Lr8=";
 
   # Fail for unclear reasons (only on darwin)
-  checkFlags = lib.optionals stdenv.isDarwin [
+  checkFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "--skip=speedtest::tests::test_get_configuration"
     "--skip=speedtest::tests::test_get_server_list_with_config"
   ];
diff --git a/pkgs/tools/networking/srelay/default.nix b/pkgs/tools/networking/srelay/default.nix
index a8d6a33ac3d1..d54d4d79017a 100644
--- a/pkgs/tools/networking/srelay/default.nix
+++ b/pkgs/tools/networking/srelay/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     platforms = lib.platforms.unix;
     license = lib.licenses.bsd3;
     # never built on aarch64-linux since first introduction in nixpkgs
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
     mainProgram = "srelay";
   };
 }
diff --git a/pkgs/tools/networking/strongswan/default.nix b/pkgs/tools/networking/strongswan/default.nix
index 8aaebd710e10..9972af91f1f9 100644
--- a/pkgs/tools/networking/strongswan/default.nix
+++ b/pkgs/tools/networking/strongswan/default.nix
@@ -31,8 +31,8 @@ stdenv.mkDerivation rec {
   buildInputs =
     [ curl gmp python3 ldns unbound openssl pcsclite ]
     ++ lib.optionals enableTNC [ trousers sqlite libxml2 ]
-    ++ lib.optionals stdenv.isLinux [ systemd.dev pam iptables ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ SystemConfiguration ])
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ systemd.dev pam iptables ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ SystemConfiguration ])
     ++ lib.optionals enableNetworkManager [ networkmanager glib ];
 
   patches = [
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
     ./updown-path.patch
   ];
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     # glibc-2.26 reorganized internal includes
     sed '1i#include <stdint.h>' -i src/libstrongswan/utils/utils/memory.h
 
@@ -60,14 +60,14 @@ stdenv.mkDerivation rec {
       "--enable-pkcs11" "--enable-eap-sim-pcsc" "--enable-dnscert" "--enable-unbound"
       "--enable-chapoly"
       "--enable-curl" ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       "--enable-farp" "--enable-dhcp"
       "--enable-systemd" "--with-systemdsystemunitdir=${placeholder "out"}/etc/systemd/system"
       "--enable-xauth-pam"
       "--enable-forecast"
       "--enable-connmark"
       "--enable-af-alg" ]
-    ++ lib.optionals stdenv.isx86_64 [ "--enable-aesni" "--enable-rdrand" ]
+    ++ lib.optionals stdenv.hostPlatform.isx86_64 [ "--enable-aesni" "--enable-rdrand" ]
     ++ lib.optional (stdenv.hostPlatform.system == "i686-linux") "--enable-padlock"
     ++ lib.optionals enableTNC [
          "--disable-gmp" "--disable-aes" "--disable-md5" "--disable-sha1" "--disable-sha2" "--disable-fips-prf"
@@ -82,7 +82,7 @@ stdenv.mkDerivation rec {
          "--enable-nm"
          "--with-nm-ca-dir=/etc/ssl/certs" ]
     # Taken from: https://wiki.strongswan.org/projects/strongswan/wiki/MacOSX
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       "--disable-systemd"
       "--disable-xauth-pam"
       "--disable-kernel-netlink"
diff --git a/pkgs/tools/networking/suckit/default.nix b/pkgs/tools/networking/suckit/default.nix
index c62ad29e0113..07c91a9081c2 100644
--- a/pkgs/tools/networking/suckit/default.nix
+++ b/pkgs/tools/networking/suckit/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optional stdenv.isDarwin Security;
+  buildInputs = [ openssl ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # requires internet access
   checkFlags = [
diff --git a/pkgs/tools/networking/termscp/default.nix b/pkgs/tools/networking/termscp/default.nix
index fdff493abd90..1d5fbf4c341c 100644
--- a/pkgs/tools/networking/termscp/default.nix
+++ b/pkgs/tools/networking/termscp/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
     dbus
     openssl
     samba
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Cocoa
     Foundation
@@ -43,7 +43,7 @@ rustPlatform.buildRustPackage rec {
   # Needed to get openssl-sys to use pkg-config.
   OPENSSL_NO_VENDOR = 1;
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-framework" "AppKit"
   ]);
 
diff --git a/pkgs/tools/networking/tgt/default.nix b/pkgs/tools/networking/tgt/default.nix
index a26daf42649d..647bc18e27b2 100644
--- a/pkgs/tools/networking/tgt/default.nix
+++ b/pkgs/tools/networking/tgt/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     "-Wno-error=maybe-uninitialized"
   ];
 
-  hardeningDisable = lib.optionals stdenv.isAarch64 [
+  hardeningDisable = lib.optionals stdenv.hostPlatform.isAarch64 [
     # error: 'read' writing 1 byte into a region of size 0 overflows the destination
     "fortify3"
   ];
diff --git a/pkgs/tools/networking/toxvpn/default.nix b/pkgs/tools/networking/toxvpn/default.nix
index 555960da3980..dc6ae0daa16e 100644
--- a/pkgs/tools/networking/toxvpn/default.nix
+++ b/pkgs/tools/networking/toxvpn/default.nix
@@ -22,11 +22,11 @@ stdenv.mkDerivation {
   };
 
   buildInputs = [ libtoxcore nlohmann_json libsodium zeromq ]
-    ++ lib.optionals stdenv.isLinux [ libcap systemd ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libcap systemd ];
 
   nativeBuildInputs = [ cmake ];
 
-  cmakeFlags = lib.optionals stdenv.isLinux [ "-DSYSTEMD=1" ];
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isLinux [ "-DSYSTEMD=1" ];
 
   postInstall = "$out/bin/toxvpn -h";
 
diff --git a/pkgs/tools/networking/transmission-rss/default.nix b/pkgs/tools/networking/transmission-rss/default.nix
index 3d6d80ef474e..859b8acb5b10 100644
--- a/pkgs/tools/networking/transmission-rss/default.nix
+++ b/pkgs/tools/networking/transmission-rss/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [pkg-config];
   buildInputs = [openssl]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
       Security
       SystemConfiguration
     ]);
diff --git a/pkgs/tools/networking/trurl/default.nix b/pkgs/tools/networking/trurl/default.nix
index a8dc34374a9e..1e4bd4404f9c 100644
--- a/pkgs/tools/networking/trurl/default.nix
+++ b/pkgs/tools/networking/trurl/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   outputs = [ "out" "dev" "man" ];
-  separateDebugInfo = stdenv.isLinux;
+  separateDebugInfo = stdenv.hostPlatform.isLinux;
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/tools/networking/tuic/default.nix b/pkgs/tools/networking/tuic/default.nix
index fc1270e01ae8..a2a0bfc2f0ff 100644
--- a/pkgs/tools/networking/tuic/default.nix
+++ b/pkgs/tools/networking/tuic/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec{
     hash = "sha256-VoNr91vDqBlt9asT/dwCeYk13UNiDexNNiKwD5DSn8k=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     Security
   ]);
 
diff --git a/pkgs/tools/networking/tunnelto/default.nix b/pkgs/tools/networking/tunnelto/default.nix
index 450556808394..7f3129705950 100644
--- a/pkgs/tools/networking/tunnelto/default.nix
+++ b/pkgs/tools/networking/tunnelto/default.nix
@@ -25,10 +25,10 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
   buildInputs = [ ]
-    ++ lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "Expose your local web server to the internet with a public URL";
diff --git a/pkgs/tools/networking/tuntox/default.nix b/pkgs/tools/networking/tuntox/default.nix
index e59a615e2627..07fa3e316092 100644
--- a/pkgs/tools/networking/tuntox/default.nix
+++ b/pkgs/tools/networking/tuntox/default.nix
@@ -45,10 +45,10 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
       substituteInPlace gitversion.h --replace '7d45afdf7d00a95a8c3687175e2b1669fa1f7745' '365d2e5cbc0e3655fb64c204db0515f5f4cdf5a4'
-    '' + lib.optionalString stdenv.isLinux ''
+    '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       substituteInPlace Makefile --replace ' -static ' ' '
       substituteInPlace Makefile --replace 'CC=gcc' ' '
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       substituteInPlace Makefile.mac --replace '.git/HEAD .git/index' ' '
       substituteInPlace Makefile.mac --replace '/usr/local/lib/libtoxcore.a' '${libtoxcore}/lib/libtoxcore.a'
       substituteInPlace Makefile.mac --replace '/usr/local/lib/libsodium.a' '${libsodium}/lib/libsodium.dylib'
@@ -56,9 +56,9 @@ stdenv.mkDerivation rec {
     '';
 
   buildPhase = ''
-    '' + lib.optionalString stdenv.isLinux ''
+    '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       make
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       make -f Makefile.mac tuntox
     '';
 
diff --git a/pkgs/tools/networking/uwimap/default.nix b/pkgs/tools/networking/uwimap/default.nix
index a39f0d4660fb..a359e7677ac2 100644
--- a/pkgs/tools/networking/uwimap/default.nix
+++ b/pkgs/tools/networking/uwimap/default.nix
@@ -12,17 +12,17 @@ stdenv.mkDerivation rec {
   makeFlags = [
     "CC=${stdenv.cc.targetPrefix}cc"
     "RANLIB=${stdenv.cc.targetPrefix}ranlib"
-    (if stdenv.isDarwin
+    (if stdenv.hostPlatform.isDarwin
     then "osx"
     else "lnp") # Linux with PAM modules;
-  ] ++ lib.optional stdenv.isx86_64 "EXTRACFLAGS=-fPIC"; # -fPIC is required to compile php with imap on x86_64 systems
+  ] ++ lib.optional stdenv.hostPlatform.isx86_64 "EXTRACFLAGS=-fPIC"; # -fPIC is required to compile php with imap on x86_64 systems
 
 
   hardeningDisable = [ "format" ];
 
   buildInputs = [
     openssl
-    (if stdenv.isDarwin then libkrb5 else pam)  # Matches the make target.
+    (if stdenv.hostPlatform.isDarwin then libkrb5 else pam)  # Matches the make target.
   ];
 
   patches = [
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     makeFlagsArray+=("ARRC=${stdenv.cc.targetPrefix}ar rc")
   '';
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin
     "-I${openssl.dev}/include/openssl";
 
   installPhase = ''
diff --git a/pkgs/tools/networking/veilid/default.nix b/pkgs/tools/networking/veilid/default.nix
index c41f4b414af0..e06a03b8edce 100644
--- a/pkgs/tools/networking/veilid/default.nix
+++ b/pkgs/tools/networking/veilid/default.nix
@@ -39,7 +39,7 @@ rustPlatform.buildRustPackage rec {
     protobuf
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ AppKit Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ AppKit Security ];
 
   cargoBuildFlags = [
     "--workspace"
diff --git a/pkgs/tools/networking/vpn-slice/default.nix b/pkgs/tools/networking/vpn-slice/default.nix
index ce8b04c35fc7..6ca66d44e61d 100644
--- a/pkgs/tools/networking/vpn-slice/default.nix
+++ b/pkgs/tools/networking/vpn-slice/default.nix
@@ -20,10 +20,10 @@ buildPythonApplication rec {
     sha256 = "sha256-T6VULLNRLWO4OcAsuTmhty6H4EhinyxQSg0dfv2DUJs=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace vpn_slice/mac.py \
       --replace "'/sbin/route'" "'${unixtools.route}/bin/route'"
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace vpn_slice/linux.py \
       --replace "'/sbin/ip'" "'${iproute2}/bin/ip'" \
       --replace "'/sbin/iptables'" "'${iptables}/bin/iptables'"
diff --git a/pkgs/tools/networking/vpnc-scripts/default.nix b/pkgs/tools/networking/vpnc-scripts/default.nix
index e0319ed4bf14..9a757c73cf55 100644
--- a/pkgs/tools/networking/vpnc-scripts/default.nix
+++ b/pkgs/tools/networking/vpnc-scripts/default.nix
@@ -31,13 +31,13 @@ stdenv.mkDerivation {
   preFixup = ''
     substituteInPlace $out/bin/vpnc-script \
       --replace "which" "type -P"
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace $out/bin/vpnc-script \
       --replace "/sbin/resolvconf" "${openresolv}/bin/resolvconf" \
       --replace "/usr/bin/resolvectl" "${systemd}/bin/resolvectl"
   '' + ''
     wrapProgram $out/bin/vpnc-script \
-      --prefix PATH : "${lib.makeBinPath ([ nettools gawk coreutils gnugrep ] ++ lib.optionals stdenv.isLinux [ openresolv iproute2 ])}"
+      --prefix PATH : "${lib.makeBinPath ([ nettools gawk coreutils gnugrep ] ++ lib.optionals stdenv.hostPlatform.isLinux [ openresolv iproute2 ])}"
   '';
 
   meta = with lib; {
diff --git a/pkgs/tools/networking/wakeonlan/default.nix b/pkgs/tools/networking/wakeonlan/default.nix
index 4a9f0936f940..f3f222d5ad64 100644
--- a/pkgs/tools/networking/wakeonlan/default.nix
+++ b/pkgs/tools/networking/wakeonlan/default.nix
@@ -13,7 +13,7 @@ perlPackages.buildPerlPackage rec {
 
   outputs = [ "out" ];
 
-  nativeBuildInputs = [ installShellFiles ] ++ lib.optional stdenv.isDarwin shortenPerlShebang;
+  nativeBuildInputs = [ installShellFiles ] ++ lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
 
   nativeCheckInputs = [ perlPackages.TestPerlCritic perlPackages.TestPod perlPackages.TestPodCoverage ];
   # Linting and formatting checks are of no interest for us.
@@ -24,7 +24,7 @@ perlPackages.buildPerlPackage rec {
   installPhase = ''
     install -Dt $out/bin wakeonlan
     installManPage blib/man1/wakeonlan.1
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/wakeonlan
   '';
 
diff --git a/pkgs/tools/networking/wg-netmanager/default.nix b/pkgs/tools/networking/wg-netmanager/default.nix
index b4a34ba22a48..a2c16fae073b 100644
--- a/pkgs/tools/networking/wg-netmanager/default.nix
+++ b/pkgs/tools/networking/wg-netmanager/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-cOxkWMFPVmi+/BQWIvExzX5LDyC7C8kaTf5dGwfXj+s=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # Test 01 tries to create a wireguard interface, which requires sudo.
   doCheck = true;
diff --git a/pkgs/tools/networking/wget/default.nix b/pkgs/tools/networking/wget/default.nix
index f2681f2a39fa..0bfdf8affc7b 100644
--- a/pkgs/tools/networking/wget/default.nix
+++ b/pkgs/tools/networking/wget/default.nix
@@ -31,11 +31,11 @@ stdenv.mkDerivation rec {
   buildInputs = [ libidn2 zlib pcre libuuid ]
     ++ lib.optional withOpenssl openssl
     ++ lib.optional withLibpsl libpsl
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.CoreServices perlPackages.perl ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreServices perlPackages.perl ];
 
   configureFlags = [
     (lib.withFeatureAs withOpenssl "ssl" "openssl")
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # https://lists.gnu.org/archive/html/bug-wget/2021-01/msg00076.html
     "--without-included-regex"
   ];
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
     do
       sed -i "$i" -e's/localhost/127.0.0.1/g'
     done
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # depending on the underlying filesystem, some tests
     # creating exotic file names fail
     for f in tests/Test-ftp-iri.px \
@@ -67,7 +67,7 @@ stdenv.mkDerivation rec {
   checkInputs = [
     perlPackages.HTTPDaemon
     python3
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     perlPackages.IOSocketSSL
   ];
 
diff --git a/pkgs/tools/networking/wget2/default.nix b/pkgs/tools/networking/wget2/default.nix
index 85512aec06b9..7445b425f034 100644
--- a/pkgs/tools/networking/wget2/default.nix
+++ b/pkgs/tools/networking/wget2/default.nix
@@ -68,7 +68,7 @@ stdenv.mkDerivation rec {
     zstd
   ] ++ lib.optionals sslSupport [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreServices
   ];
 
diff --git a/pkgs/tools/networking/wireguard-tools/default.nix b/pkgs/tools/networking/wireguard-tools/default.nix
index ebac01f063cd..855f620b4406 100644
--- a/pkgs/tools/networking/wireguard-tools/default.nix
+++ b/pkgs/tools/networking/wireguard-tools/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
   postFixup = ''
     substituteInPlace $out/lib/systemd/system/wg-quick@.service \
       --replace /usr/bin $out/bin
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     for f in $out/bin/*; do
       # Which firewall and resolvconf implementations to use should be determined by the
       # environment, we provide the "default" ones as fallback.
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
         --prefix PATH : ${lib.makeBinPath [ procps iproute2 ]} \
         --suffix PATH : ${lib.makeBinPath [ iptables openresolv ]}
     done
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     for f in $out/bin/*; do
       wrapProgram $f \
         --prefix PATH : ${lib.makeBinPath [ wireguard-go ]}
diff --git a/pkgs/tools/networking/wireguard-vanity-address/default.nix b/pkgs/tools/networking/wireguard-vanity-address/default.nix
index cc7ebc557faf..969e9187db5b 100644
--- a/pkgs/tools/networking/wireguard-vanity-address/default.nix
+++ b/pkgs/tools/networking/wireguard-vanity-address/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
     sha256 = "sha256-SjzcVIQ9HwhP6Y/uCwXGSdZgrYcUQ9kE/Bow8pyOKNo=";
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   cargoHash = "sha256-0bkyopkssqH0vfaWkFC3dV2o7Q3EuDEOM8JvRB9ekLU=";
 
diff --git a/pkgs/tools/networking/wrk2/default.nix b/pkgs/tools/networking/wrk2/default.nix
index 6d2988705129..9bc8401efa66 100644
--- a/pkgs/tools/networking/wrk2/default.nix
+++ b/pkgs/tools/networking/wrk2/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     platforms   = lib.platforms.linux;
     maintainers = with lib.maintainers; [ thoughtpolice ];
     # never built on aarch64-linux since first introduction in nixpkgs
-    broken = stdenv.isLinux && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64;
     mainProgram = "wrk2";
   };
 }
diff --git a/pkgs/tools/networking/xh/default.nix b/pkgs/tools/networking/xh/default.nix
index 5df8e7903b2b..2ab8be19c44f 100644
--- a/pkgs/tools/networking/xh/default.nix
+++ b/pkgs/tools/networking/xh/default.nix
@@ -27,7 +27,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ installShellFiles pkg-config ];
 
   buildInputs = lib.optionals withNativeTls
-    (if stdenv.isDarwin then [ darwin.apple_sdk.frameworks.SystemConfiguration ] else [ openssl ]);
+    (if stdenv.hostPlatform.isDarwin then [ darwin.apple_sdk.frameworks.SystemConfiguration ] else [ openssl ]);
 
   # Get openssl-sys to use pkg-config
   OPENSSL_NO_VENDOR = 1;
diff --git a/pkgs/tools/networking/xrootd/default.nix b/pkgs/tools/networking/xrootd/default.nix
index 1ceb6380aaa1..60da8d7e6e21 100644
--- a/pkgs/tools/networking/xrootd/default.nix
+++ b/pkgs/tools/networking/xrootd/default.nix
@@ -78,11 +78,11 @@ stdenv.mkDerivation (finalAttrs: {
     scitokens-cpp
     zlib
   ]
-  ++ lib.optionals (!stdenv.isDarwin) [
+  ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     # https://github.com/xrootd/xrootd/blob/5b5a1f6957def2816b77ec773c7e1bfb3f1cfc5b/cmake/XRootDFindLibs.cmake#L58
     fuse
   ]
-  ++ lib.optionals stdenv.isLinux [
+  ++ lib.optionals stdenv.hostPlatform.isLinux [
     systemd
     voms
   ]
@@ -95,7 +95,7 @@ stdenv.mkDerivation (finalAttrs: {
     patchShebangs genversion.sh
     substituteInPlace cmake/XRootDConfig.cmake.in \
       --replace-fail "@PACKAGE_CMAKE_INSTALL_" "@CMAKE_INSTALL_FULL_"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i cmake/XRootDOSDefs.cmake -e '/set( MacOSX TRUE )/ainclude( GNUInstallDirs )'
   '';
 
@@ -117,7 +117,7 @@ stdenv.mkDerivation (finalAttrs: {
   + ''
     moveToOutput "bin/xrootd-config" "$dev"
     moveToOutput "bin/.xrootd-config-wrapped" "$dev"
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     mkdir -p "$out/lib/systemd/system"
     install -m 644 -t "$out/lib/systemd/system" ../packaging/common/*.service ../packaging/common/*.socket
   '';
@@ -127,12 +127,12 @@ stdenv.mkDerivation (finalAttrs: {
   ] ++ lib.optionals enableTestRunner [
     "-DFORCE_ENABLED=TRUE"
     "-DENABLE_DAVIX=TRUE"
-    "-DENABLE_FUSE=${if (!stdenv.isDarwin) then "TRUE" else "FALSE"}" # not supported
+    "-DENABLE_FUSE=${if (!stdenv.hostPlatform.isDarwin) then "TRUE" else "FALSE"}" # not supported
     "-DENABLE_MACAROONS=OFF"
     "-DENABLE_PYTHON=FALSE" # built separately
     "-DENABLE_SCITOKENS=TRUE"
     "-DENABLE_TESTS=TRUE"
-    "-DENABLE_VOMS=${if stdenv.isLinux then "TRUE" else "FALSE"}"
+    "-DENABLE_VOMS=${if stdenv.hostPlatform.isLinux then "TRUE" else "FALSE"}"
   ];
 
   postFixup = lib.optionalString (externalEtc != null) ''
diff --git a/pkgs/tools/nix/fh/default.nix b/pkgs/tools/nix/fh/default.nix
index 7e99d3aa068a..bc02bac41d58 100644
--- a/pkgs/tools/nix/fh/default.nix
+++ b/pkgs/tools/nix/fh/default.nix
@@ -29,13 +29,13 @@ rustPlatform.buildRustPackage rec {
 
   checkInputs = [ cacert ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
     gcc.cc.lib
   ];
 
-  env = lib.optionalAttrs stdenv.isDarwin {
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     NIX_CFLAGS_COMPILE = "-I${lib.getDev libcxx}/include/c++/v1";
   };
 
diff --git a/pkgs/tools/nix/gridlock/default.nix b/pkgs/tools/nix/gridlock/default.nix
index e49750eba5ca..ddfa9ee9831f 100644
--- a/pkgs/tools/nix/gridlock/default.nix
+++ b/pkgs/tools/nix/gridlock/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/nix/info/default.nix b/pkgs/tools/nix/info/default.nix
index 73c336afe045..7b29f9c43c9a 100644
--- a/pkgs/tools/nix/info/default.nix
+++ b/pkgs/tools/nix/info/default.nix
@@ -9,8 +9,8 @@ stdenv.mkDerivation {
 
   path = lib.makeBinPath ([
     coreutils findutils gnugrep
-  ] ++ (lib.optionals stdenv.isDarwin [ darwin.DarwinTools ]));
-  is_darwin = if stdenv.isDarwin then "yes" else "no";
+  ] ++ (lib.optionals stdenv.hostPlatform.isDarwin [ darwin.DarwinTools ]));
+  is_darwin = if stdenv.hostPlatform.isDarwin then "yes" else "no";
 
   sandboxtest = ./sandbox.nix;
   relaxedsandboxtest = ./relaxedsandbox.nix;
diff --git a/pkgs/tools/nix/nix-init/default.nix b/pkgs/tools/nix/nix-init/default.nix
index 2784ac2518f1..9be2431d5958 100644
--- a/pkgs/tools/nix/nix-init/default.nix
+++ b/pkgs/tools/nix/nix-init/default.nix
@@ -52,9 +52,9 @@ rustPlatform.buildRustPackage rec {
     openssl
     zlib
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
-  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
     darwin.apple_sdk.frameworks.CoreFoundation
   ];
 
diff --git a/pkgs/tools/nix/nixci/default.nix b/pkgs/tools/nix/nixci/default.nix
index 30e23c4f63ec..5075705a2c88 100644
--- a/pkgs/tools/nix/nixci/default.nix
+++ b/pkgs/tools/nix/nixci/default.nix
@@ -25,9 +25,9 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config installShellFiles nix ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     IOKit
     Security
     SystemConfiguration
diff --git a/pkgs/tools/nix/nixdoc/default.nix b/pkgs/tools/nix/nixdoc/default.nix
index b0b7bc82e0d8..70b49237f161 100644
--- a/pkgs/tools/nix/nixdoc/default.nix
+++ b/pkgs/tools/nix/nixdoc/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-5KV2VDsPmSgrdZIqCuQ5gjgCVs/Ki6uG6GTwjmtKLlQ=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.Security ];
 
   meta = with lib; {
     description = "Generate documentation for Nix functions";
diff --git a/pkgs/tools/nix/npins/default.nix b/pkgs/tools/nix/npins/default.nix
index 7ea75baab100..37f48f547062 100644
--- a/pkgs/tools/nix/npins/default.nix
+++ b/pkgs/tools/nix/npins/default.nix
@@ -21,7 +21,7 @@ in rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-YwMypBl+P1ygf4zUbkZlq4zPrOzf+lPOz2FLg2/xI3k=";
 
-  buildInputs = lib.optional stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]);
   nativeBuildInputs = [ makeWrapper ];
 
   # (Almost) all tests require internet
diff --git a/pkgs/tools/nix/statix/default.nix b/pkgs/tools/nix/statix/default.nix
index 9cc48659d419..079459f2a2d0 100644
--- a/pkgs/tools/nix/statix/default.nix
+++ b/pkgs/tools/nix/statix/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
   buildFeatures = lib.optional withJson "json";
 
   # tests are failing on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Lints and suggestions for the nix programming language";
diff --git a/pkgs/tools/package-management/akku/overrides.nix b/pkgs/tools/package-management/akku/overrides.nix
index 8617a3bdb5fc..ecc11d945377 100644
--- a/pkgs/tools/package-management/akku/overrides.nix
+++ b/pkgs/tools/package-management/akku/overrides.nix
@@ -11,8 +11,8 @@ let
   # debugging
   showLibs = pkg: old: { preCheck = "echo $CHEZSCHEMELIBDIRS"; };
   runTests = pkg: old: { doCheck = true; };
-  brokenOnAarch64 = _: lib.addMetaAttrs { broken = stdenv.isAarch64; };
-  brokenOnx86_64Darwin = lib.addMetaAttrs { broken = stdenv.isDarwin && stdenv.isx86_64; };
+  brokenOnAarch64 = _: lib.addMetaAttrs { broken = stdenv.hostPlatform.isAarch64; };
+  brokenOnx86_64Darwin = lib.addMetaAttrs { broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64; };
 in
 {
   chez-srfi = joinOverrides [
diff --git a/pkgs/tools/package-management/disnix/dysnomia/default.nix b/pkgs/tools/package-management/disnix/dysnomia/default.nix
index 48d1b7965112..92b880d1428f 100644
--- a/pkgs/tools/package-management/disnix/dysnomia/default.nix
+++ b/pkgs/tools/package-management/disnix/dysnomia/default.nix
@@ -61,12 +61,12 @@ stdenv.mkDerivation rec {
      (if enableNginxWebApplication then "--with-nginx" else "--without-nginx")
      (if enableXinetdService then "--with-xinetd" else "--without-xinetd")
      (if enableS6RCService then "--with-s6-rc" else "--without-s6-rc")
-     (if stdenv.isDarwin then "--with-launchd" else "--without-launchd")
+     (if stdenv.hostPlatform.isDarwin then "--with-launchd" else "--without-launchd")
      "--with-job-template=${jobTemplate}"
    ] ++ lib.optional enableLegacy "--enable-legacy";
 
   buildInputs = [ getopt netcat ]
-    ++ lib.optional stdenv.isLinux systemd
+    ++ lib.optional stdenv.hostPlatform.isLinux systemd
     ++ lib.optional enableEjabberdDump ejabberd
     ++ lib.optional enableMySQLDatabase mariadb.out
     ++ lib.optional enablePostgreSQLDatabase postgresql
diff --git a/pkgs/tools/package-management/dpkg/default.nix b/pkgs/tools/package-management/dpkg/default.nix
index db095e59c489..6b9c1f3c2edb 100644
--- a/pkgs/tools/package-management/dpkg/default.nix
+++ b/pkgs/tools/package-management/dpkg/default.nix
@@ -13,7 +13,7 @@
 , autoreconfHook
 , pkg-config
 , diffutils
-, glibc ? !stdenv.isDarwin
+, glibc ? !stdenv.hostPlatform.isDarwin
 , darwin
 }:
 
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     "--with-admindir=/var/lib/dpkg"
     "PERL_LIBDIR=$(out)/${perl.libPrefix}"
     "TAR=${gnutar}/bin/tar"
-  ] ++ lib.optional stdenv.isDarwin "--disable-linker-optimisations";
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin "--disable-linker-optimisations";
 
   enableParallelBuilding = true;
 
@@ -67,13 +67,13 @@ stdenv.mkDerivation rec {
        --replace '"rm"' \"${coreutils}/bin/rm\" \
        --replace '"cat"' \"${coreutils}/bin/cat\" \
        --replace '"diff"' \"${diffutils}/bin/diff\"
-  '' + lib.optionalString (!stdenv.isDarwin) ''
+  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     substituteInPlace src/main/help.c \
        --replace '"ldconfig"' \"${glibc.bin}/bin/ldconfig\"
   '';
 
   buildInputs = [ perl zlib bzip2 xz zstd libmd ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
   nativeBuildInputs = [ makeWrapper perl autoreconfHook pkg-config ];
 
   postInstall =
diff --git a/pkgs/tools/package-management/lix/common.nix b/pkgs/tools/package-management/lix/common.nix
index fce59cff1173..dd1580bc4336 100644
--- a/pkgs/tools/package-management/lix/common.nix
+++ b/pkgs/tools/package-management/lix/common.nix
@@ -65,7 +65,7 @@ assert (hash == null) -> (src != null);
 
   enableDocumentation ? stdenv.hostPlatform == stdenv.buildPlatform,
   enableStatic ? stdenv.hostPlatform.isStatic,
-  withAWS ? !enableStatic && (stdenv.isLinux || stdenv.isDarwin),
+  withAWS ? !enableStatic && (stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isDarwin),
   aws-sdk-cpp,
   # RISC-V support in progress https://github.com/seccomp/libseccomp/pull/50
   withLibseccomp ? lib.meta.availableOn stdenv.hostPlatform libseccomp,
@@ -124,7 +124,7 @@ stdenv.mkDerivation {
       mdbook-linkcheck
       doxygen
     ]
-    ++ lib.optionals stdenv.isLinux [ util-linuxMinimal ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ util-linuxMinimal ];
 
   buildInputs =
     [
@@ -145,8 +145,8 @@ stdenv.mkDerivation {
       lix-doc
     ]
     ++ lib.optionals (!isLegacyParser) [ pegtl ]
-    ++ lib.optionals stdenv.isDarwin [ Security ]
-    ++ lib.optionals (stdenv.isx86_64) [ libcpuid ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ]
+    ++ lib.optionals (stdenv.hostPlatform.isx86_64) [ libcpuid ]
     ++ lib.optionals withLibseccomp [ libseccomp ]
     ++ lib.optionals withAWS [ aws-sdk-cpp ];
 
@@ -166,7 +166,7 @@ stdenv.mkDerivation {
       mkdir -p $out/lib
       cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*} $out/lib
       rm -f $out/lib/*.a
-      ${lib.optionalString stdenv.isLinux ''
+      ${lib.optionalString stdenv.hostPlatform.isLinux ''
         chmod u+w $out/lib/*.so.*
         patchelf --set-rpath $out/lib:${stdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
       ''}
@@ -194,14 +194,14 @@ stdenv.mkDerivation {
       (lib.mesonBool "enable-tests" true)
       (lib.mesonBool "enable-docs" enableDocumentation)
       (lib.mesonEnable "internal-api-docs" enableDocumentation)
-      (lib.mesonBool "enable-embedded-sandbox-shell" (stdenv.isLinux && stdenv.hostPlatform.isStatic))
+      (lib.mesonBool "enable-embedded-sandbox-shell" (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isStatic))
       (lib.mesonEnable "seccomp-sandboxing" withLibseccomp)
 
       (lib.mesonOption "store-dir" storeDir)
       (lib.mesonOption "state-dir" stateDir)
       (lib.mesonOption "sysconfdir" confDir)
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       (lib.mesonOption "sandbox-shell" "${busybox-sandbox-shell}/bin/busybox")
     ];
 
@@ -219,7 +219,7 @@ stdenv.mkDerivation {
       mkdir -p $out/nix-support
       echo "file binary-dist $out/bin/nix" >> $out/nix-support/hydra-build-products
     ''
-    + lib.optionalString stdenv.isDarwin ''
+    + lib.optionalString stdenv.hostPlatform.isDarwin ''
       for lib in liblixutil.dylib liblixexpr.dylib; do
         install_name_tool \
           -change "${lib.getLib boost}/lib/libboost_context.dylib" \
@@ -272,8 +272,8 @@ stdenv.mkDerivation {
   # fortify breaks the build with lto and musl for some reason
   ++ lib.optional stdenv.hostPlatform.isMusl "fortify";
 
-  # hardeningEnable = lib.optionals (!stdenv.isDarwin) [ "pie" ];
-  separateDebugInfo = stdenv.isLinux && !enableStatic;
+  # hardeningEnable = lib.optionals (!stdenv.hostPlatform.isDarwin) [ "pie" ];
+  separateDebugInfo = stdenv.hostPlatform.isLinux && !enableStatic;
   enableParallelBuilding = true;
 
   # Used by (1) test which has dynamic port assignment.
diff --git a/pkgs/tools/package-management/mynewt-newt/default.nix b/pkgs/tools/package-management/mynewt-newt/default.nix
index 789a48655436..7f5fda624695 100644
--- a/pkgs/tools/package-management/mynewt-newt/default.nix
+++ b/pkgs/tools/package-management/mynewt-newt/default.nix
@@ -21,7 +21,7 @@ buildGoModule rec {
 
   # CGO_ENABLED=0 required for mac - "error: 'TARGET_OS_MAC' is not defined, evaluates to 0"
   # https://github.com/shirou/gopsutil/issues/976
-  CGO_ENABLED = if stdenv.isLinux then 1 else 0;
+  CGO_ENABLED = if stdenv.hostPlatform.isLinux then 1 else 0;
 
   meta = with lib; {
     homepage = "https://mynewt.apache.org/";
diff --git a/pkgs/tools/package-management/nix-doc/default.nix b/pkgs/tools/package-management/nix-doc/default.nix
index f7b3777f7f23..f594b0648bfa 100644
--- a/pkgs/tools/package-management/nix-doc/default.nix
+++ b/pkgs/tools/package-management/nix-doc/default.nix
@@ -38,7 +38,7 @@ rustPlatform.buildRustPackage rec {
 
   # Due to a Rust bug, setting -C relro-level to anything including "off" on
   # macOS will cause link errors
-  env = lib.optionalAttrs (withPlugin && stdenv.isLinux) {
+  env = lib.optionalAttrs (withPlugin && stdenv.hostPlatform.isLinux) {
     RUSTFLAGS = "-C relro-level=partial";
   };
 
diff --git a/pkgs/tools/package-management/nix-du/default.nix b/pkgs/tools/package-management/nix-du/default.nix
index 8b2463ccce4c..69289b8955b7 100644
--- a/pkgs/tools/package-management/nix-du/default.nix
+++ b/pkgs/tools/package-management/nix-du/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
     boost
     nix
     nlohmann_json
-  ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   nativeBuildInputs = [ pkg-config rustPlatform.bindgenHook ];
 
diff --git a/pkgs/tools/package-management/nix-index/default.nix b/pkgs/tools/package-management/nix-index/default.nix
index b4b8b0832094..433ad82d4d2f 100644
--- a/pkgs/tools/package-management/nix-index/default.nix
+++ b/pkgs/tools/package-management/nix-index/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ openssl curl sqlite ]
-    ++ lib.optional stdenv.isDarwin Security;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   postInstall = ''
     substituteInPlace command-not-found.sh \
diff --git a/pkgs/tools/package-management/nix-template/default.nix b/pkgs/tools/package-management/nix-template/default.nix
index 91c1f9b26807..1d0c6f42f517 100644
--- a/pkgs/tools/package-management/nix-template/default.nix
+++ b/pkgs/tools/package-management/nix-template/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
   ];
 
   buildInputs = [ openssl ]
-    ++ lib.optional stdenv.isDarwin Security;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # needed for nix-prefetch-url
   postInstall = ''
diff --git a/pkgs/tools/package-management/nix/common.nix b/pkgs/tools/package-management/nix/common.nix
index a6f9f3c5b594..c26cb410399d 100644
--- a/pkgs/tools/package-management/nix/common.nix
+++ b/pkgs/tools/package-management/nix/common.nix
@@ -76,7 +76,7 @@ in
 , xz
 , enableDocumentation ? stdenv.buildPlatform.canExecute stdenv.hostPlatform
 , enableStatic ? stdenv.hostPlatform.isStatic
-, withAWS ? !enableStatic && (stdenv.isLinux || stdenv.isDarwin), aws-sdk-cpp
+, withAWS ? !enableStatic && (stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isDarwin), aws-sdk-cpp
 , withLibseccomp ? lib.meta.availableOn stdenv.hostPlatform libseccomp, libseccomp
 
 , confDir
@@ -101,7 +101,7 @@ self = stdenv.mkDerivation {
     [ "out" "dev" ]
     ++ lib.optionals enableDocumentation [ "man" "doc" ];
 
-  hardeningEnable = lib.optionals (!stdenv.isDarwin) [ "pie" ];
+  hardeningEnable = lib.optionals (!stdenv.hostPlatform.isDarwin) [ "pie" ];
 
   hardeningDisable = [
     "shadowstack"
@@ -126,7 +126,7 @@ self = stdenv.mkDerivation {
     mdbook
   ] ++ lib.optionals (atLeast213 && enableDocumentation) [
     mdbook-linkcheck
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     util-linuxMinimal
   ];
 
@@ -147,9 +147,9 @@ self = stdenv.mkDerivation {
     libgit2
   ] ++ lib.optionals (atLeast224 || lib.versionAtLeast version "pre20240626") [
     toml11
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
-  ] ++ lib.optionals (stdenv.isx86_64) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isx86_64) [
     libcpuid
   ] ++ lib.optionals atLeast214 [
     rapidcheck
@@ -177,7 +177,7 @@ self = stdenv.mkDerivation {
       mkdir -p $out/lib
       cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*} $out/lib
       rm -f $out/lib/*.a
-      ${lib.optionalString stdenv.isLinux ''
+      ${lib.optionalString stdenv.hostPlatform.isLinux ''
         chmod u+w $out/lib/*.so.*
         patchelf --set-rpath $out/lib:${stdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
       ''}
@@ -206,9 +206,9 @@ self = stdenv.mkDerivation {
     "--enable-gc"
   ] ++ lib.optionals (!enableDocumentation) [
     "--disable-doc-gen"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "--with-sandbox-shell=${busybox-sandbox-shell}/bin/busybox"
-  ] ++ lib.optionals (atLeast210 && stdenv.isLinux && stdenv.hostPlatform.isStatic) [
+  ] ++ lib.optionals (atLeast210 && stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isStatic) [
     "--enable-embedded-sandbox-shell"
   ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform && stdenv.hostPlatform ? nix && stdenv.hostPlatform.nix ? system) [
     "--with-system=${stdenv.hostPlatform.nix.system}"
@@ -234,16 +234,16 @@ self = stdenv.mkDerivation {
   installCheckTarget = if atLeast210 then "installcheck" else null;
 
   # socket path becomes too long otherwise
-  preInstallCheck = lib.optionalString stdenv.isDarwin ''
+  preInstallCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export TMPDIR=$NIX_BUILD_TOP
   ''
   # Prevent crashes in libcurl due to invoking Objective-C `+initialize` methods after `fork`.
   # See http://sealiesoftware.com/blog/archive/2017/6/5/Objective-C_and_fork_in_macOS_1013.html.
-  + lib.optionalString stdenv.isDarwin ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES
   ''
   # See https://github.com/NixOS/nix/issues/5687
-  + lib.optionalString (atLeast25 && stdenv.isDarwin) ''
+  + lib.optionalString (atLeast25 && stdenv.hostPlatform.isDarwin) ''
     echo "exit 99" > tests/gc-non-blocking.sh
   '' # TODO: investigate why this broken
   + lib.optionalString (atLeast25 && stdenv.hostPlatform.system == "aarch64-linux") ''
@@ -253,7 +253,7 @@ self = stdenv.mkDerivation {
     export MANPATH=$man/share/man:$MANPATH
   '';
 
-  separateDebugInfo = stdenv.isLinux && (atLeast24 -> !enableStatic);
+  separateDebugInfo = stdenv.hostPlatform.isLinux && (atLeast24 -> !enableStatic);
 
   enableParallelBuilding = true;
 
@@ -283,7 +283,7 @@ self = stdenv.mkDerivation {
         inherit lib pkgs;
         nix = self;
       };
-    } // lib.optionalAttrs stdenv.isLinux {
+    } // lib.optionalAttrs stdenv.hostPlatform.isLinux {
       nixStatic = pkgsStatic.nixVersions.${self_attribute_name};
 
       # Basic smoke tests that needs to pass when upgrading nix.
diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index ab059abf912f..2ea39c85eb85 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -68,7 +68,7 @@ let
       rm aws-cpp-sdk-core-tests/aws/auth/AWSAuthSignerTest.cpp
       # TestRandomURLMultiThreaded fails
       rm aws-cpp-sdk-core-tests/http/HttpClientTest.cpp
-    '' + lib.optionalString aws-sdk-cpp.stdenv.isi686 ''
+    '' + lib.optionalString aws-sdk-cpp.stdenv.hostPlatform.isi686 ''
       # EPSILON is exceeded
       rm aws-cpp-sdk-core-tests/aws/client/AdaptiveRetryStrategyTest.cpp
     '';
@@ -214,7 +214,7 @@ in lib.makeExtensible (self: ({
     version = "2.24.7";
     hash = "sha256-NAyc5MR/T70umcSeMv7y3AVt00ZkmDXGm7LfYKTONfE=";
     self_attribute_name = "nix_2_24";
-  }).override (lib.optionalAttrs (stdenv.isDarwin && stdenv.isx86_64) {
+  }).override (lib.optionalAttrs (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) {
     # Fix the following error with the default x86_64-darwin SDK:
     #
     #     error: aligned allocation function of type 'void *(std::size_t, std::align_val_t)' is only available on macOS 10.13 or newer
@@ -235,7 +235,7 @@ in lib.makeExtensible (self: ({
       hash = "sha256-Hp7dkx7zfB9a4l5QusXUob0b1T2qdZ23LFo5dcp3xrU=";
     };
     self_attribute_name = "git";
-  }).override (lib.optionalAttrs (stdenv.isDarwin && stdenv.isx86_64) {
+  }).override (lib.optionalAttrs (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) {
     # Fix the following error with the default x86_64-darwin SDK:
     #
     #     error: aligned allocation function of type 'void *(std::size_t, std::align_val_t)' is only available on macOS 10.13 or newer
diff --git a/pkgs/tools/package-management/nix/nix-perl.nix b/pkgs/tools/package-management/nix/nix-perl.nix
index 4c93fcef564a..50e342e96cad 100644
--- a/pkgs/tools/package-management/nix/nix-perl.nix
+++ b/pkgs/tools/package-management/nix/nix-perl.nix
@@ -47,7 +47,7 @@ in stdenv.mkDerivation (finalAttrs: {
     nix
     perl
     xz
-  ] ++ lib.optional (stdenv.isDarwin) Security;
+  ] ++ lib.optional (stdenv.hostPlatform.isDarwin) Security;
 
   # Not cross-safe since Nix checks for curl/perl via
   # NEED_PROG/find_program, but both seem to be needed at runtime
@@ -65,7 +65,7 @@ in stdenv.mkDerivation (finalAttrs: {
   ]);
 
   # `perlPackages.Test2Harness` is marked broken for Darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   nativeCheckInputs = [
     perl.pkgs.Test2Harness
diff --git a/pkgs/tools/package-management/pkg/default.nix b/pkgs/tools/package-management/pkg/default.nix
index 92a2270e2d75..76890f4bd515 100644
--- a/pkgs/tools/package-management/pkg/default.nix
+++ b/pkgs/tools/package-management/pkg/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ m4 pkg-config tcl ];
   buildInputs = [ bzip2 elfutils libarchive openssl xz zlib ]
-    ++ lib.optional stdenv.isLinux libbsd;
+    ++ lib.optional stdenv.hostPlatform.isLinux libbsd;
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/tools/package-management/poetry/unwrapped.nix b/pkgs/tools/package-management/poetry/unwrapped.nix
index 71f1653dbdee..4a520f201883 100644
--- a/pkgs/tools/package-management/poetry/unwrapped.nix
+++ b/pkgs/tools/package-management/poetry/unwrapped.nix
@@ -81,7 +81,7 @@ buildPythonPackage rec {
     tomlkit
     trove-classifiers
     virtualenv
-  ] ++ lib.optionals (stdenv.isDarwin) [
+  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
     xattr
   ] ++ lib.optionals (pythonOlder "3.11") [
     tomli
@@ -102,18 +102,18 @@ buildPythonPackage rec {
     httpretty
     pytest-mock
     pytest-xdist
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.ps
   ];
 
   preCheck = (''
     export HOME=$TMPDIR
-  '' + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     # https://github.com/python/cpython/issues/74570#issuecomment-1093748531
     export no_proxy='*';
   '');
 
-  postCheck = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  postCheck = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     unset no_proxy
   '';
 
diff --git a/pkgs/tools/package-management/rpm/default.nix b/pkgs/tools/package-management/rpm/default.nix
index ac9c498a9c89..ae4352ca0109 100644
--- a/pkgs/tools/package-management/rpm/default.nix
+++ b/pkgs/tools/package-management/rpm/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkg-config pandoc ];
   buildInputs = [ cpio zlib zstd bzip2 file libarchive libgcrypt nspr nss db xz python lua sqlite ]
     ++ lib.optional stdenv.cc.isClang llvmPackages.openmp
-    ++ lib.optional stdenv.isLinux libcap;
+    ++ lib.optional stdenv.hostPlatform.isLinux libcap;
 
   # rpm/rpmlib.h includes popt.h, and then the pkg-config file mentions these as linkage requirements
   propagatedBuildInputs = [ popt nss db bzip2 libarchive libbfd ]
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
     "--enable-zstd"
     "--localstatedir=/var"
     "--sharedstatedir=/com"
-  ] ++ lib.optional stdenv.isLinux "--with-cap";
+  ] ++ lib.optional stdenv.hostPlatform.isLinux "--with-cap";
 
   postPatch = ''
     substituteInPlace Makefile.am --replace '@$(MKDIR_P) $(DESTDIR)$(localstatedir)/tmp' ""
diff --git a/pkgs/tools/security/acsccid/default.nix b/pkgs/tools/security/acsccid/default.nix
index 74a0c39cb2d7..8bf7ae948000 100644
--- a/pkgs/tools/security/acsccid/default.nix
+++ b/pkgs/tools/security/acsccid/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     pcsclite
     libusb1
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     libiconv
   ];
 
diff --git a/pkgs/tools/security/adreaper/default.nix b/pkgs/tools/security/adreaper/default.nix
index 873760250618..4e7c554e9164 100644
--- a/pkgs/tools/security/adreaper/default.nix
+++ b/pkgs/tools/security/adreaper/default.nix
@@ -17,7 +17,7 @@ buildGoModule rec {
 
   vendorHash = "sha256-lU39kj/uz0l7Rodsu6+UMv2o579eu1KUbutUNZni7bM=";
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mv $out/bin/ADReaper $out/bin/$pname
   '';
 
diff --git a/pkgs/tools/security/age-plugin-ledger/default.nix b/pkgs/tools/security/age-plugin-ledger/default.nix
index 516edc55db39..c20429968f4e 100644
--- a/pkgs/tools/security/age-plugin-ledger/default.nix
+++ b/pkgs/tools/security/age-plugin-ledger/default.nix
@@ -29,7 +29,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     libusb1
     openssl
-  ] ++ lib.optional stdenv.isDarwin AppKit;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin AppKit;
 
   nativeCheckInputs = [
     rage
diff --git a/pkgs/tools/security/age-plugin-yubikey/default.nix b/pkgs/tools/security/age-plugin-yubikey/default.nix
index e69d4dc789fb..9022442f62a8 100644
--- a/pkgs/tools/security/age-plugin-yubikey/default.nix
+++ b/pkgs/tools/security/age-plugin-yubikey/default.nix
@@ -30,8 +30,8 @@ rustPlatform.buildRustPackage rec {
   buildInputs = [
     openssl
   ]
-  ++ lib.optional stdenv.isLinux pcsclite
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optional stdenv.hostPlatform.isLinux pcsclite
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     IOKit
     Foundation
     PCSC
diff --git a/pkgs/tools/security/amber/default.nix b/pkgs/tools/security/amber/default.nix
index 5cb96596564c..a02c0a7236cf 100644
--- a/pkgs/tools/security/amber/default.nix
+++ b/pkgs/tools/security/amber/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-Joy+SO1zR78Eh5eK2bxyT0l3hCuLX/J3u/UvN+++6vg=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "Manage secret values in-repo via public key cryptography";
diff --git a/pkgs/tools/security/arti/default.nix b/pkgs/tools/security/arti/default.nix
index 21d8ee4ae154..1e93dae95961 100644
--- a/pkgs/tools/security/arti/default.nix
+++ b/pkgs/tools/security/arti/default.nix
@@ -23,11 +23,11 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-I45SaawWAK7iTZDFhJT4YVO439D/3NmWLp3FtFmhLC0=";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
 
   buildInputs = [ sqlite ]
-    ++ lib.optionals stdenv.isLinux [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ CoreServices ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ openssl ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   cargoBuildFlags = [ "--package" "arti" ];
 
diff --git a/pkgs/tools/security/authoscope/default.nix b/pkgs/tools/security/authoscope/default.nix
index b44f8bec2f7f..e30a00ff5be1 100644
--- a/pkgs/tools/security/authoscope/default.nix
+++ b/pkgs/tools/security/authoscope/default.nix
@@ -32,7 +32,7 @@ rustPlatform.buildRustPackage rec {
     libcap
     zlib
     openssl
-  ] ++ lib.optional stdenv.isDarwin Security;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   postInstall = ''
     installManPage docs/${pname}.1
diff --git a/pkgs/tools/security/bettercap/default.nix b/pkgs/tools/security/bettercap/default.nix
index db1104447951..5594bc106beb 100644
--- a/pkgs/tools/security/bettercap/default.nix
+++ b/pkgs/tools/security/bettercap/default.nix
@@ -25,7 +25,7 @@ buildGoModule rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libpcap libusb1 ]
-    ++ lib.optionals stdenv.isLinux [ libnfnetlink libnetfilter_queue ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libnfnetlink libnetfilter_queue ];
 
   meta = with lib; {
     description = "Man in the middle tool";
diff --git a/pkgs/tools/security/boofuzz/default.nix b/pkgs/tools/security/boofuzz/default.nix
index 5c2418cad665..b254b9d3d191 100644
--- a/pkgs/tools/security/boofuzz/default.nix
+++ b/pkgs/tools/security/boofuzz/default.nix
@@ -46,7 +46,7 @@ python3.pkgs.buildPythonApplication rec {
     "TestNoResponseFailure"
     "TestProcessMonitor"
     "TestSocketConnection"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "test_time_repeater"
   ];
 
diff --git a/pkgs/tools/security/browserpass/default.nix b/pkgs/tools/security/browserpass/default.nix
index 463501a05eb0..4c58039e899a 100644
--- a/pkgs/tools/security/browserpass/default.nix
+++ b/pkgs/tools/security/browserpass/default.nix
@@ -20,7 +20,7 @@ buildGoModule rec {
     sha256 = "sha256-UZzOPRRiCUIG7uSSp9AEPMDN/+4cgyK47RhrI8oUx8U=";
   };
 
-  nativeBuildInputs = [ makeWrapper ] ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  nativeBuildInputs = [ makeWrapper ] ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   vendorHash = "sha256-CjuH4ANP2bJDeA+o+1j+obbtk5/NVLet/OFS3Rms4r0=";
 
diff --git a/pkgs/tools/security/bws/default.nix b/pkgs/tools/security/bws/default.nix
index 4621bb1da5d0..0482ee954583 100644
--- a/pkgs/tools/security/bws/default.nix
+++ b/pkgs/tools/security/bws/default.nix
@@ -32,17 +32,17 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [
     installShellFiles
     pkg-config
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     perl
   ];
 
   buildInputs =
     [
       oniguruma
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       openssl
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.SystemConfiguration
     ];
 
diff --git a/pkgs/tools/security/cdk-go/default.nix b/pkgs/tools/security/cdk-go/default.nix
index 93c0c1aa4964..0282bf20f79b 100644
--- a/pkgs/tools/security/cdk-go/default.nix
+++ b/pkgs/tools/security/cdk-go/default.nix
@@ -27,6 +27,6 @@ buildGoModule rec {
     license = with licenses; [ gpl2Only ];
     maintainers = with maintainers; [ fab ];
     mainProgram = "cdk";
-    broken = stdenv.isDarwin; # needs to update gopsutil to at least v3.21.3 to include https://github.com/shirou/gopsutil/pull/1042
+    broken = stdenv.hostPlatform.isDarwin; # needs to update gopsutil to at least v3.21.3 to include https://github.com/shirou/gopsutil/pull/1042
   };
 }
diff --git a/pkgs/tools/security/cdxgen/default.nix b/pkgs/tools/security/cdxgen/default.nix
index 3a6c14ea5f1c..6ea34ed4a834 100644
--- a/pkgs/tools/security/cdxgen/default.nix
+++ b/pkgs/tools/security/cdxgen/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation (finalAttrs: {
     node-gyp # required for sqlite3 bindings
     pnpm_9.configHook
     python3 # required for sqlite3 bindings
-  ] ++ lib.optional stdenv.isDarwin [ xcbuild ];
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin [ xcbuild ];
 
   pnpmDeps = pnpm_9.fetchDeps {
     inherit (finalAttrs) pname version src;
diff --git a/pkgs/tools/security/certdump/default.nix b/pkgs/tools/security/certdump/default.nix
index 8615fda62b49..409650ac938b 100644
--- a/pkgs/tools/security/certdump/default.nix
+++ b/pkgs/tools/security/certdump/default.nix
@@ -41,6 +41,6 @@ buildDotnetModule rec {
     license = licenses.asl20;
     maintainers = [ maintainers.baloo ];
     # net5 has no osx-arm64 target available
-    broken = stdenv.isDarwin && stdenv.isAarch64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
   };
 }
diff --git a/pkgs/tools/security/certinfo/default.nix b/pkgs/tools/security/certinfo/default.nix
index f40b2a1eff01..3d48985d78a5 100644
--- a/pkgs/tools/security/certinfo/default.nix
+++ b/pkgs/tools/security/certinfo/default.nix
@@ -12,11 +12,11 @@ buildGoModule rec {
   };
 
   # clipboard functionality not working on Darwin
-  doCheck = !(stdenv.isDarwin && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64);
 
   buildInputs = [ ]
-    ++ lib.optionals stdenv.isLinux [ libX11 ]
-    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Cocoa ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libX11 ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Cocoa ];
 
   vendorHash = null;
 
diff --git a/pkgs/tools/security/chainsaw/default.nix b/pkgs/tools/security/chainsaw/default.nix
index b529956a9655..78eabff9d465 100644
--- a/pkgs/tools/security/chainsaw/default.nix
+++ b/pkgs/tools/security/chainsaw/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-1w3DYP69aOphoqbsZIF9aX56Lftg2niKClmImLTa5DE=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.CoreFoundation ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreFoundation ];
 
   ldflags = [
     "-w"
diff --git a/pkgs/tools/security/cherrybomb/default.nix b/pkgs/tools/security/cherrybomb/default.nix
index 139ac5aea1ad..38783319e7c7 100644
--- a/pkgs/tools/security/cherrybomb/default.nix
+++ b/pkgs/tools/security/cherrybomb/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-pj4+rG8XbrxVuNgnTVUTPmgrPBRSnoBnqFhOO/JGGWI=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/security/chipsec/default.nix b/pkgs/tools/security/chipsec/default.nix
index 304b10ca8abb..73c1ade5bd63 100644
--- a/pkgs/tools/security/chipsec/default.nix
+++ b/pkgs/tools/security/chipsec/default.nix
@@ -12,7 +12,7 @@ python3.pkgs.buildPythonApplication rec {
   pname = "chipsec";
   version = "1.10.6";
 
-  disabled = !stdenv.isLinux;
+  disabled = !stdenv.hostPlatform.isLinux;
 
   src = fetchFromGitHub {
     owner = "chipsec";
diff --git a/pkgs/tools/security/clamav/default.nix b/pkgs/tools/security/clamav/default.nix
index b44ccd5394a6..87471065098a 100644
--- a/pkgs/tools/security/clamav/default.nix
+++ b/pkgs/tools/security/clamav/default.nix
@@ -23,8 +23,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config rustc rust-bindgen rustfmt cargo python3 ];
   buildInputs = [
     zlib bzip2 libxml2 openssl ncurses curl libiconv libmilter pcre2 libmspack json_c check
-  ] ++ lib.optional stdenv.isLinux systemd
-    ++ lib.optional stdenv.isDarwin Foundation;
+  ] ++ lib.optional stdenv.hostPlatform.isLinux systemd
+    ++ lib.optional stdenv.hostPlatform.isDarwin Foundation;
 
   cmakeFlags = [
     "-DSYSTEMD_UNIT_DIR=${placeholder "out"}/lib/systemd"
diff --git a/pkgs/tools/security/cosign/default.nix b/pkgs/tools/security/cosign/default.nix
index 24092e58423e..7d416cbdb6f8 100644
--- a/pkgs/tools/security/cosign/default.nix
+++ b/pkgs/tools/security/cosign/default.nix
@@ -23,8 +23,8 @@ buildGoModule rec {
   };
 
   buildInputs =
-    lib.optional (stdenv.isLinux && pivKeySupport) (lib.getDev pcsclite)
-    ++ lib.optionals (stdenv.isDarwin && pivKeySupport) [ PCSC ];
+    lib.optional (stdenv.hostPlatform.isLinux && pivKeySupport) (lib.getDev pcsclite)
+    ++ lib.optionals (stdenv.hostPlatform.isDarwin && pivKeySupport) [ PCSC ];
 
   nativeBuildInputs = [ pkg-config installShellFiles ];
 
diff --git a/pkgs/tools/security/echidna/default.nix b/pkgs/tools/security/echidna/default.nix
index a8e812219ba5..f3bfb9fbffee 100644
--- a/pkgs/tools/security/echidna/default.nix
+++ b/pkgs/tools/security/echidna/default.nix
@@ -110,7 +110,7 @@ mkDerivation (
     mainProgram = "echidna-test";
 
   }
-  // lib.optionalAttrs (stdenv.isDarwin && stdenv.isAarch64) {
+  // lib.optionalAttrs (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) {
 
     # https://github.com/NixOS/nixpkgs/pull/304352
     postInstall = with haskellPackages; ''
diff --git a/pkgs/tools/security/feroxbuster/default.nix b/pkgs/tools/security/feroxbuster/default.nix
index f4e361332e96..64975a04c9f4 100644
--- a/pkgs/tools/security/feroxbuster/default.nix
+++ b/pkgs/tools/security/feroxbuster/default.nix
@@ -34,7 +34,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     Security
     SystemConfiguration
   ];
diff --git a/pkgs/tools/security/firefox_decrypt/default.nix b/pkgs/tools/security/firefox_decrypt/default.nix
index 2799a990975a..52dc4a9bd71f 100644
--- a/pkgs/tools/security/firefox_decrypt/default.nix
+++ b/pkgs/tools/security/firefox_decrypt/default.nix
@@ -29,7 +29,7 @@ buildPythonApplication rec {
 
   makeWrapperArgs = [
     "--prefix"
-    (if stdenv.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH")
+    (if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH")
     ":"
     (lib.makeLibraryPath [ nss ])
   ];
diff --git a/pkgs/tools/security/freeze/default.nix b/pkgs/tools/security/freeze/default.nix
index 28ef21657009..e828ed79bf4c 100644
--- a/pkgs/tools/security/freeze/default.nix
+++ b/pkgs/tools/security/freeze/default.nix
@@ -22,7 +22,7 @@ buildGoModule rec {
     "-w"
   ];
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mv $out/bin/Freeze $out/bin/freeze
   '';
 
diff --git a/pkgs/tools/security/genpass/default.nix b/pkgs/tools/security/genpass/default.nix
index 0c326c2dac66..f1e9a197680b 100644
--- a/pkgs/tools/security/genpass/default.nix
+++ b/pkgs/tools/security/genpass/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-ls3tzZ+gtZQlObmbtwJDq6N/f5nY+Ps7RL5R/fR5Vgg=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreFoundation libiconv Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreFoundation libiconv Security ];
 
   meta = with lib; {
     description = "Simple yet robust commandline random password generator";
diff --git a/pkgs/tools/security/gfshare/default.nix b/pkgs/tools/security/gfshare/default.nix
index e0da2fdaf35b..caf04cee0d5c 100644
--- a/pkgs/tools/security/gfshare/default.nix
+++ b/pkgs/tools/security/gfshare/default.nix
@@ -24,6 +24,6 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     platforms = platforms.all;
     maintainers = [ maintainers.rraval ];
-    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/gfshare.x86_64-darwin
+    broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/gfshare.x86_64-darwin
   };
 }
diff --git a/pkgs/tools/security/ghidra/build.nix b/pkgs/tools/security/ghidra/build.nix
index 994cee822a16..b898147d9a21 100644
--- a/pkgs/tools/security/ghidra/build.nix
+++ b/pkgs/tools/security/ghidra/build.nix
@@ -112,7 +112,7 @@ stdenv.mkDerivation (finalAttrs: {
       python3
       python3Packages.pip
     ]
-    ++ lib.optionals stdenv.isDarwin [
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       xcbuild
       desktopToDarwinBundle
     ];
@@ -196,6 +196,6 @@ stdenv.mkDerivation (finalAttrs: {
       roblabla
       vringar
     ];
-    broken = stdenv.isDarwin && stdenv.isx86_64;
+    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64;
   };
 })
diff --git a/pkgs/tools/security/ghidra/default.nix b/pkgs/tools/security/ghidra/default.nix
index 55f224da511b..8f39076b4eec 100644
--- a/pkgs/tools/security/ghidra/default.nix
+++ b/pkgs/tools/security/ghidra/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     makeWrapper
     icoutils
-  ] ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   buildInputs = [
     stdenv.cc.cc.lib
diff --git a/pkgs/tools/security/gitjacker/default.nix b/pkgs/tools/security/gitjacker/default.nix
index 5303e169e8dd..83e8b91f8b28 100644
--- a/pkgs/tools/security/gitjacker/default.nix
+++ b/pkgs/tools/security/gitjacker/default.nix
@@ -22,7 +22,7 @@ buildGoModule rec {
 
   nativeCheckInputs = [ git ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   preCheck = ''
     export PATH=$TMPDIR/usr/bin:$PATH
diff --git a/pkgs/tools/security/gnupg/22.nix b/pkgs/tools/security/gnupg/22.nix
index 5181f78e8a2e..e0fdf3361f9b 100644
--- a/pkgs/tools/security/gnupg/22.nix
+++ b/pkgs/tools/security/gnupg/22.nix
@@ -4,7 +4,7 @@
 , adns, bzip2, gnutls, libusb1, openldap, readline, sqlite, zlib
 , enableMinimal ? false
 , withPcsc ? !enableMinimal, pcsclite
-, guiSupport ? stdenv.isDarwin, pinentry
+, guiSupport ? stdenv.hostPlatform.isDarwin, pinentry
 , nixosTests
 }:
 
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     # Fix broken SOURCE_DATE_EPOCH usage - remove on the next upstream update
     sed -i 's/$SOURCE_DATE_EPOCH/''${SOURCE_DATE_EPOCH}/' doc/Makefile.am
     sed -i 's/$SOURCE_DATE_EPOCH/''${SOURCE_DATE_EPOCH}/' doc/Makefile.in
-    '' + lib.optionalString (stdenv.isLinux && withPcsc) ''
+    '' + lib.optionalString (stdenv.hostPlatform.isLinux && withPcsc) ''
       sed -i 's,"libpcsclite\.so[^"]*","${lib.getLib pcsclite}/lib/libpcsclite.so",g' scd/scdaemon.c
     '';
 
@@ -51,7 +51,7 @@ stdenv.mkDerivation rec {
     "GPGRT_CONFIG=${lib.getDev libgpg-error}/bin/gpgrt-config"
   ]
   ++ lib.optional guiSupport "--with-pinentry-pgm=${pinentry}/${pinentry.binaryPath or "bin/pinentry"}"
-  ++ lib.optional stdenv.isDarwin "--disable-ccid-driver";
+  ++ lib.optional stdenv.hostPlatform.isDarwin "--disable-ccid-driver";
 
   postInstall = if enableMinimal
   then ''
diff --git a/pkgs/tools/security/gnupg/24.nix b/pkgs/tools/security/gnupg/24.nix
index ef1b2e1db518..8c709e9b739a 100644
--- a/pkgs/tools/security/gnupg/24.nix
+++ b/pkgs/tools/security/gnupg/24.nix
@@ -4,8 +4,8 @@
 , adns, bzip2, gnutls, libusb1, openldap, readline, sqlite, zlib
 , enableMinimal ? false
 , withPcsc ? !enableMinimal, pcsclite
-, guiSupport ? stdenv.isDarwin, pinentry
-, withTpm2Tss ? !stdenv.isDarwin && !enableMinimal, tpm2-tss
+, guiSupport ? stdenv.hostPlatform.isDarwin, pinentry
+, withTpm2Tss ? !stdenv.hostPlatform.isDarwin && !enableMinimal, tpm2-tss
 , nixosTests
 }:
 
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     sed -i 's,\(hkps\|https\)://keyserver.ubuntu.com,hkps://keys.openpgp.org,g' configure configure.ac doc/dirmngr.texi doc/gnupg.info-1
-    '' + lib.optionalString (stdenv.isLinux && withPcsc) ''
+    '' + lib.optionalString (stdenv.hostPlatform.isLinux && withPcsc) ''
       sed -i 's,"libpcsclite\.so[^"]*","${lib.getLib pcsclite}/lib/libpcsclite.so",g' scd/scdaemon.c
     '';
 
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
   ]
   ++ lib.optional guiSupport "--with-pinentry-pgm=${pinentry}/${pinentry.binaryPath or "bin/pinentry"}"
   ++ lib.optional withTpm2Tss "--with-tss=intel"
-  ++ lib.optional stdenv.isDarwin "--disable-ccid-driver";
+  ++ lib.optional stdenv.hostPlatform.isDarwin "--disable-ccid-driver";
 
   postInstall = if enableMinimal
   then ''
diff --git a/pkgs/tools/security/go365/default.nix b/pkgs/tools/security/go365/default.nix
index 381df6d74629..12fad051584d 100644
--- a/pkgs/tools/security/go365/default.nix
+++ b/pkgs/tools/security/go365/default.nix
@@ -17,7 +17,7 @@ buildGoModule rec {
 
   vendorHash = "sha256-Io+69kIW4DV2EkA73pjaTcTRbDSYBf61R7F+141Jojs=";
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mv $out/bin/Go365 $out/bin/$pname
   '';
 
diff --git a/pkgs/tools/security/gopass/default.nix b/pkgs/tools/security/gopass/default.nix
index fc16820d1c97..68b794214f6e 100644
--- a/pkgs/tools/security/gopass/default.nix
+++ b/pkgs/tools/security/gopass/default.nix
@@ -35,7 +35,7 @@ buildGoModule rec {
       git
       gnupg
       xclip
-    ] ++ lib.optional stdenv.isLinux wl-clipboard
+    ] ++ lib.optional stdenv.hostPlatform.isLinux wl-clipboard
   );
 
   postInstall = ''
diff --git a/pkgs/tools/security/gpg-tui/default.nix b/pkgs/tools/security/gpg-tui/default.nix
index ba07ffb9e67f..5c4dd4620eaf 100644
--- a/pkgs/tools/security/gpg-tui/default.nix
+++ b/pkgs/tools/security/gpg-tui/default.nix
@@ -40,7 +40,7 @@ rustPlatform.buildRustPackage rec {
   ] ++ lib.optionals x11Support [
     libxcb
     libxkbcommon
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Foundation
     libiconv
diff --git a/pkgs/tools/security/ibm-sw-tpm2/default.nix b/pkgs/tools/security/ibm-sw-tpm2/default.nix
index 76123a7c893f..7792165d2587 100644
--- a/pkgs/tools/security/ibm-sw-tpm2/default.nix
+++ b/pkgs/tools/security/ibm-sw-tpm2/default.nix
@@ -6,7 +6,7 @@
 }:
 let
   makefile =
-    if stdenv.isDarwin
+    if stdenv.hostPlatform.isDarwin
     then "makefile.mac"
     else "makefile";
 in
diff --git a/pkgs/tools/security/jwt-cli/default.nix b/pkgs/tools/security/jwt-cli/default.nix
index 2dc57e8c0713..988864cbf7dc 100644
--- a/pkgs/tools/security/jwt-cli/default.nix
+++ b/pkgs/tools/security/jwt-cli/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
     installShellCompletion --cmd jwt \
diff --git a/pkgs/tools/security/kbs2/default.nix b/pkgs/tools/security/kbs2/default.nix
index ae16b3f00c9a..04c6923af041 100644
--- a/pkgs/tools/security/kbs2/default.nix
+++ b/pkgs/tools/security/kbs2/default.nix
@@ -23,18 +23,18 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-LcnvCWGVdBxhDgQDoGHXRppGeEpfjOv/F0dZMN2bOF8=";
 
   nativeBuildInputs = [ installShellFiles ]
-    ++ lib.optionals stdenv.isLinux [ python3 ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ python3 ];
 
   buildInputs = [ ]
-    ++ lib.optionals stdenv.isLinux [ libxcb ]
-    ++ lib.optionals stdenv.isDarwin [ SystemConfiguration AppKit ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libxcb ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ SystemConfiguration AppKit ];
 
   preCheck = ''
     export HOME=$TMPDIR
   '';
 
   checkFlags = [ "--skip=kbs2::config::tests::test_find_config_dir" ]
-    ++ lib.optionals stdenv.isDarwin [ "--skip=test_ragelib_rewrap_keyfile" ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "--skip=test_ragelib_rewrap_keyfile" ];
 
   postInstall = ''
     mkdir -p $out/share/kbs2
diff --git a/pkgs/tools/security/keepwn/default.nix b/pkgs/tools/security/keepwn/default.nix
index 9c878f37fd0c..8306cbe441ea 100644
--- a/pkgs/tools/security/keepwn/default.nix
+++ b/pkgs/tools/security/keepwn/default.nix
@@ -29,7 +29,7 @@ python3.pkgs.buildPythonApplication rec {
     termcolor
   ];
 
-  postInstall = lib.optionalString (!stdenv.isDarwin) ''
+  postInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     mv $out/bin/KeePwn $out/bin/$pname
   '';
 
diff --git a/pkgs/tools/security/kepler/default.nix b/pkgs/tools/security/kepler/default.nix
index e4d2fc914cf9..35e601dac163 100644
--- a/pkgs/tools/security/kepler/default.nix
+++ b/pkgs/tools/security/kepler/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
     openssl
     postgresql
     zstd
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/security/keybase/default.nix b/pkgs/tools/security/keybase/default.nix
index d8457c487253..103066261a19 100644
--- a/pkgs/tools/security/keybase/default.nix
+++ b/pkgs/tools/security/keybase/default.nix
@@ -28,7 +28,7 @@ buildGoModule rec {
     })
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ AppKit AVFoundation AudioToolbox ImageIO CoreMedia Foundation CoreGraphics MediaToolbox ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ AppKit AVFoundation AudioToolbox ImageIO CoreMedia Foundation CoreGraphics MediaToolbox ];
   tags = [ "production" ];
   ldflags = [ "-s" "-w" ];
 
diff --git a/pkgs/tools/security/keyscope/default.nix b/pkgs/tools/security/keyscope/default.nix
index ae5bd80e2964..b2bd09d1f44a 100644
--- a/pkgs/tools/security/keyscope/default.nix
+++ b/pkgs/tools/security/keyscope/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     DiskArbitration
     Foundation
     IOKit
diff --git a/pkgs/tools/security/kpcli/default.nix b/pkgs/tools/security/kpcli/default.nix
index 5a3b0a75862f..f7e636f8facc 100644
--- a/pkgs/tools/security/kpcli/default.nix
+++ b/pkgs/tools/security/kpcli/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
     makeWrapper $out/share/kpcli.pl $out/bin/kpcli --set PERL5LIB \
       "${with perlPackages; makePerlPath ([
          CaptureTiny Clipboard Clone CryptRijndael SortNaturally TermReadKey TermShellUI FileKeePass TermReadLineGnu XMLParser
-      ] ++ lib.optional stdenv.isDarwin MacPasteboard)}"
+      ] ++ lib.optional stdenv.hostPlatform.isDarwin MacPasteboard)}"
   '';
 
 
diff --git a/pkgs/tools/security/kubeclarity/default.nix b/pkgs/tools/security/kubeclarity/default.nix
index 585b4d35cd69..25a6582695e7 100644
--- a/pkgs/tools/security/kubeclarity/default.nix
+++ b/pkgs/tools/security/kubeclarity/default.nix
@@ -26,7 +26,7 @@ buildGoModule rec {
     pkg-config
   ];
 
-  buildInputs = lib.optionals stdenv.isLinux [
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     btrfs-progs
     lvm2
   ];
diff --git a/pkgs/tools/security/lethe/default.nix b/pkgs/tools/security/lethe/default.nix
index ff9b297d5361..21875006f4fc 100644
--- a/pkgs/tools/security/lethe/default.nix
+++ b/pkgs/tools/security/lethe/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-SFNNpbHZdDJvH95f+VWyVKnQp3OJwQmCOqHtLAhhkOk=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "Tool to wipe drives in a secure way";
diff --git a/pkgs/tools/security/libacr38u/default.nix b/pkgs/tools/security/libacr38u/default.nix
index 5211f42b96ef..45db3985d555 100644
--- a/pkgs/tools/security/libacr38u/default.nix
+++ b/pkgs/tools/security/libacr38u/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ pcsclite libusb-compat-0_1 ]
-    ++ lib.optional stdenv.isDarwin IOKit;
+    ++ lib.optional stdenv.hostPlatform.isDarwin IOKit;
 
   preBuild = ''
     makeFlagsArray=(usbdropdir="$out/pcsc/drivers");
diff --git a/pkgs/tools/security/maigret/default.nix b/pkgs/tools/security/maigret/default.nix
index cdbf6df4dd0f..0936e0d98062 100644
--- a/pkgs/tools/security/maigret/default.nix
+++ b/pkgs/tools/security/maigret/default.nix
@@ -92,7 +92,7 @@ python3.pkgs.buildPythonApplication rec {
     "test_pdf_report"
     "test_self_check_db_negative_enabled"
     "test_self_check_db_positive_enable"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # AsyncioProgressbarExecutor is slower on darwin than it should be,
     # Upstream issue: https://github.com/soxoj/maigret/issues/679
     "test_asyncio_progressbar_executor"
diff --git a/pkgs/tools/security/masscan/default.nix b/pkgs/tools/security/masscan/default.nix
index a6aa990c1d82..9606fe0f1156 100644
--- a/pkgs/tools/security/masscan/default.nix
+++ b/pkgs/tools/security/masscan/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     # Fix broken install command
     substituteInPlace Makefile --replace "-pm755" "-pDm755"
   '';
diff --git a/pkgs/tools/security/mkp224o/default.nix b/pkgs/tools/security/mkp224o/default.nix
index 53b0e38a0dca..318284a4318f 100644
--- a/pkgs/tools/security/mkp224o/default.nix
+++ b/pkgs/tools/security/mkp224o/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
         { suffix = "donna";         configureFlags = ["--enable-donna"]; }
       ] ++ lib.optionals stdenv.hostPlatform.isx86 [
         { suffix = "donna-sse2";    configureFlags = ["--enable-donna-sse2"]; }
-      ] ++ lib.optionals (!stdenv.isDarwin && stdenv.isx86_64) [
+      ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
         { suffix = "amd64-51-30k";  configureFlags = ["--enable-amd64-51-30k"]; }
         { suffix = "amd64-64-24k";  configureFlags = ["--enable-amd64-64-24k"]; }
       ];
diff --git a/pkgs/tools/security/monsoon/default.nix b/pkgs/tools/security/monsoon/default.nix
index e17081487db2..78bf95ac6c8b 100644
--- a/pkgs/tools/security/monsoon/default.nix
+++ b/pkgs/tools/security/monsoon/default.nix
@@ -18,7 +18,7 @@ buildGoModule rec {
   vendorHash = "sha256-gdoOBW5MD94RiKINVtTDvBQRZaJ9tlgu0eh7MxuMezg=";
 
   # Tests fails on darwin
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = with lib; {
     description = "Fast HTTP enumerator";
diff --git a/pkgs/tools/security/mpw/default.nix b/pkgs/tools/security/mpw/default.nix
index 4ee765bdbdd1..5900c72bcff3 100644
--- a/pkgs/tools/security/mpw/default.nix
+++ b/pkgs/tools/security/mpw/default.nix
@@ -45,7 +45,7 @@ in stdenv.mkDerivation rec {
 
   # Some tests are expected to fail on ARM64
   # See: https://gitlab.com/spectre.app/cli/-/issues/27#note_962950844 (mpw is a predecessor to spectre-cli and this issue is relevant to mpw as well)
-  doCheck = !(stdenv.isLinux && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
 
   checkPhase = ''
     runHook preCheck
diff --git a/pkgs/tools/security/nbtscanner/default.nix b/pkgs/tools/security/nbtscanner/default.nix
index b70f554f33fd..ec6d9a1d661b 100644
--- a/pkgs/tools/security/nbtscanner/default.nix
+++ b/pkgs/tools/security/nbtscanner/default.nix
@@ -22,7 +22,7 @@ rustPlatform.buildRustPackage rec {
     ./Cargo.lock.patch
   ];
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "NetBIOS scanner written in Rust";
diff --git a/pkgs/tools/security/netexec/default.nix b/pkgs/tools/security/netexec/default.nix
index 33447f98516e..06163309b11b 100644
--- a/pkgs/tools/security/netexec/default.nix
+++ b/pkgs/tools/security/netexec/default.nix
@@ -101,6 +101,6 @@ python.pkgs.buildPythonApplication rec {
     # FIXME: failing fixupPhase:
     # $ Rewriting #!/nix/store/<hash>-python3-3.11.7/bin/python3.11 to #!/nix/store/<hash>-python3-3.11.7
     # $ /nix/store/<hash>-wrap-python-hook/nix-support/setup-hook: line 65: 47758 Killed: 9               sed -i "$f" -e "1 s^#!/nix/store/<hash>-python3-3.11.7^#!/nix/store/<hash>-python3-3.11.7^"
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/security/nitrokey-app2/default.nix b/pkgs/tools/security/nitrokey-app2/default.nix
index c675bcc9824f..28d9c74e5dc2 100644
--- a/pkgs/tools/security/nitrokey-app2/default.nix
+++ b/pkgs/tools/security/nitrokey-app2/default.nix
@@ -26,7 +26,7 @@ python3.pkgs.buildPythonApplication rec {
     wrapQtAppsHook
   ];
 
-  buildInputs = [ qtbase ] ++ lib.optionals stdenv.isLinux [
+  buildInputs = [ qtbase ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     qtwayland
   ];
 
diff --git a/pkgs/tools/security/oath-toolkit/default.nix b/pkgs/tools/security/oath-toolkit/default.nix
index 1e5b418c3f46..aa4255860469 100644
--- a/pkgs/tools/security/oath-toolkit/default.nix
+++ b/pkgs/tools/security/oath-toolkit/default.nix
@@ -3,7 +3,7 @@
 let
   # TODO: Switch to OpenPAM once https://gitlab.com/oath-toolkit/oath-toolkit/-/issues/26 is addressed upstream
   securityDependency =
-    if stdenv.isDarwin then xmlsec
+    if stdenv.hostPlatform.isDarwin then xmlsec
     else pam;
 
 in stdenv.mkDerivation rec {
@@ -17,7 +17,7 @@ in stdenv.mkDerivation rec {
 
   buildInputs = [ securityDependency ];
 
-  configureFlags = lib.optionals stdenv.isDarwin [ "--disable-pam" ];
+  configureFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "--disable-pam" ];
 
   passthru.updateScript = nix-update-script { };
 
diff --git a/pkgs/tools/security/onioncircuits/default.nix b/pkgs/tools/security/onioncircuits/default.nix
index 048631e2b774..8693d35dfa99 100644
--- a/pkgs/tools/security/onioncircuits/default.nix
+++ b/pkgs/tools/security/onioncircuits/default.nix
@@ -48,7 +48,7 @@ python3.pkgs.buildPythonApplication rec {
   '';
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://tails.boum.org";
     description = "GTK application to display Tor circuits and streams";
     mainProgram = "onioncircuits";
diff --git a/pkgs/tools/security/onlykey/onlykey.nix b/pkgs/tools/security/onlykey/onlykey.nix
index b154efb74712..b10d8718b7be 100644
--- a/pkgs/tools/security/onlykey/onlykey.nix
+++ b/pkgs/tools/security/onlykey/onlykey.nix
@@ -8,7 +8,7 @@ let
   nodeEnv = import ../../../development/node-packages/node-env.nix {
     inherit (pkgs) stdenv lib python2 runCommand writeTextFile writeShellScript;
     inherit pkgs nodejs;
-    libtool = if pkgs.stdenv.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
+    libtool = if pkgs.stdenv.hostPlatform.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
   };
 in
 import ./node-packages.nix {
diff --git a/pkgs/tools/security/opensc/default.nix b/pkgs/tools/security/opensc/default.nix
index b767261b4e0a..412053af2b4b 100644
--- a/pkgs/tools/security/opensc/default.nix
+++ b/pkgs/tools/security/opensc/default.nix
@@ -2,7 +2,7 @@
 , libiconv, pcsclite, libassuan, libXt
 , docbook_xsl, libxslt, docbook_xml_dtd_412
 , Carbon, PCSC, buildPackages
-, withApplePCSC ? stdenv.isDarwin
+, withApplePCSC ? stdenv.hostPlatform.isDarwin
 }:
 
 stdenv.mkDerivation rec {
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     zlib readline openssl libassuan
     libXt libxslt libiconv docbook_xml_dtd_412
   ]
-  ++ lib.optional stdenv.isDarwin Carbon
+  ++ lib.optional stdenv.hostPlatform.isDarwin Carbon
   ++ (if withApplePCSC then [ PCSC ] else [ pcsclite ]);
 
   env.NIX_CFLAGS_COMPILE = "-Wno-error";
diff --git a/pkgs/tools/security/pass/default.nix b/pkgs/tools/security/pass/default.nix
index 748ec2ccf3bf..fb8ef894bb18 100644
--- a/pkgs/tools/security/pass/default.nix
+++ b/pkgs/tools/security/pass/default.nix
@@ -3,7 +3,7 @@
 , which, openssh, procps, qrencode, makeWrapper, pass
 
 , xclip ? null, xdotool ? null, dmenu ? null
-, x11Support ? !stdenv.isDarwin , dmenuSupport ? (x11Support || waylandSupport)
+, x11Support ? !stdenv.hostPlatform.isDarwin , dmenuSupport ? (x11Support || waylandSupport)
 , waylandSupport ? false, wl-clipboard ? null
 , ydotool ? null, dmenu-wayland ? null
 
@@ -66,7 +66,7 @@ stdenv.mkDerivation rec {
   patches = [
     ./set-correct-program-name-for-sleep.patch
     ./extension-dir.patch
-  ] ++ lib.optional stdenv.isDarwin ./no-darwin-getopt.patch;
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin ./no-darwin-getopt.patch;
 
   nativeBuildInputs = [ makeWrapper ];
 
@@ -89,7 +89,7 @@ stdenv.mkDerivation rec {
     openssh
     procps
     qrencode
-  ] ++ lib.optional stdenv.isDarwin openssl
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin openssl
     ++ lib.optional x11Support xclip
     ++ lib.optional waylandSupport wl-clipboard
     ++ lib.optionals (waylandSupport && dmenuSupport) [ ydotool dmenu-wayland ]
@@ -124,7 +124,7 @@ stdenv.mkDerivation rec {
            -e 's@^GPGS=.*''$@GPG=${gnupg}/bin/gpg2@' \
            -e '/which gpg/ d' \
       tests/setup.sh
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # 'pass edit' uses hdid, which is not available from the sandbox.
     rm -f tests/t0200-edit-tests.sh
     rm -f tests/t0010-generate-tests.sh
diff --git a/pkgs/tools/security/pass/extensions/audit/default.nix b/pkgs/tools/security/pass/extensions/audit/default.nix
index d3f196a20563..4aa96fe40909 100644
--- a/pkgs/tools/security/pass/extensions/audit/default.nix
+++ b/pkgs/tools/security/pass/extensions/audit/default.nix
@@ -44,7 +44,7 @@ python3.pkgs.buildPythonApplication rec {
   ];
 
   # Tests freeze on darwin with: pass-audit-1.1 (checkPhase): EOFError
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
   nativeCheckInputs = [
     python3.pkgs.green
     pass
diff --git a/pkgs/tools/security/pcsc-tools/default.nix b/pkgs/tools/security/pcsc-tools/default.nix
index c696fad309a3..39efa566553d 100644
--- a/pkgs/tools/security/pcsc-tools/default.nix
+++ b/pkgs/tools/security/pcsc-tools/default.nix
@@ -8,7 +8,7 @@
 , pkg-config
 , wrapGAppsHook3
 , systemdSupport ? lib.meta.availableOn stdenv.hostPlatform systemd, systemd
-, dbusSupport ? stdenv.isLinux, dbus
+, dbusSupport ? stdenv.hostPlatform.isLinux, dbus
 , pcsclite
 , PCSC
 , wget
@@ -42,7 +42,7 @@ stdenv.mkDerivation (finalAttrs: {
     dbus
   ] ++ [
     perlPackages.perl pcsclite
-  ] ++ lib.optional stdenv.isDarwin PCSC
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin PCSC
     ++ lib.optional systemdSupport systemd;
 
   nativeBuildInputs = [
diff --git a/pkgs/tools/security/pcsclite/default.nix b/pkgs/tools/security/pcsclite/default.nix
index eedec6b239fd..955611a465c1 100644
--- a/pkgs/tools/security/pcsclite/default.nix
+++ b/pkgs/tools/security/pcsclite/default.nix
@@ -12,7 +12,7 @@
 , polkit
 , systemdLibs
 , udev
-, dbusSupport ? stdenv.isLinux
+, dbusSupport ? stdenv.hostPlatform.isLinux
 , systemdSupport ? lib.meta.availableOn stdenv.hostPlatform systemdLibs
 , udevSupport ? dbusSupport
 , libusb1
@@ -96,7 +96,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [ python3 ]
     ++ lib.optionals systemdSupport [ systemdLibs ]
     ++ lib.optionals (!systemdSupport && udevSupport) [ udev ]
-    ++ lib.optionals stdenv.isDarwin [ Foundation IOKit ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Foundation IOKit ]
     ++ lib.optionals dbusSupport [ dbus ]
     ++ lib.optionals polkitSupport [ polkit ]
     ++ lib.optionals (!udevSupport) [ libusb1 ];
diff --git a/pkgs/tools/security/quill/default.nix b/pkgs/tools/security/quill/default.nix
index 71ffc7af5c15..3aa2e6525b62 100644
--- a/pkgs/tools/security/quill/default.nix
+++ b/pkgs/tools/security/quill/default.nix
@@ -41,7 +41,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config protobuf ];
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security libiconv ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security libiconv ];
 
   meta = with lib; {
     homepage = "https://github.com/dfinity/quill";
diff --git a/pkgs/tools/security/rblake2sum/default.nix b/pkgs/tools/security/rblake2sum/default.nix
index 9052ffb68a96..92b4f574749a 100644
--- a/pkgs/tools/security/rblake2sum/default.nix
+++ b/pkgs/tools/security/rblake2sum/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage {
 
   cargoHash = "sha256-egwL3z7uB4AcRwPT0uPrenyh4FSxhbZKMdkPhRztMbs=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "Recursive blake2 digest (hash) of a file-system path";
diff --git a/pkgs/tools/security/rblake3sum/default.nix b/pkgs/tools/security/rblake3sum/default.nix
index 62f290cdf320..af04b2014403 100644
--- a/pkgs/tools/security/rblake3sum/default.nix
+++ b/pkgs/tools/security/rblake3sum/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage {
 
   cargoHash = "sha256-SE/Zg/UEV/vhB/VDcn8Y70OUIoxbJBh6H2QgFMkWPc4=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "Recursive blake3 digest (hash) of a file-system path";
diff --git a/pkgs/tools/security/rbw/default.nix b/pkgs/tools/security/rbw/default.nix
index c04ed415fb9e..597b4c0adad1 100644
--- a/pkgs/tools/security/rbw/default.nix
+++ b/pkgs/tools/security/rbw/default.nix
@@ -36,15 +36,15 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [
     installShellFiles
-  ] ++ lib.optionals stdenv.isLinux [ pkg-config ];
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
 
   buildInputs = [ bash ] # for git-credential-rbw
-  ++ lib.optionals stdenv.isDarwin [
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.Security
     darwin.apple_sdk_11_0.frameworks.AppKit
   ];
 
-  preConfigure = lib.optionalString stdenv.isLinux ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isLinux ''
     export OPENSSL_INCLUDE_DIR="${openssl.dev}/include"
     export OPENSSL_LIB_DIR="${lib.getLib openssl}/lib"
   '';
diff --git a/pkgs/tools/security/ripasso/cursive.nix b/pkgs/tools/security/ripasso/cursive.nix
index b7cc5d969d08..fe216b91ff91 100644
--- a/pkgs/tools/security/ripasso/cursive.nix
+++ b/pkgs/tools/security/ripasso/cursive.nix
@@ -49,7 +49,7 @@ rustPlatform.buildRustPackage rec {
     gpgme
     xorg.libxcb
     nettle
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     AppKit
     Security
   ];
diff --git a/pkgs/tools/security/rucredstash/default.nix b/pkgs/tools/security/rucredstash/default.nix
index 972695ad565e..43166eb0bf8e 100644
--- a/pkgs/tools/security/rucredstash/default.nix
+++ b/pkgs/tools/security/rucredstash/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-TYobVjjzrK3gprZcYyY98EvdASkq4urB+WiLlbJbwmk=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   # Disable tests since it requires network access and relies on the
   # presence of certain AWS infrastructure
diff --git a/pkgs/tools/security/rustscan/default.nix b/pkgs/tools/security/rustscan/default.nix
index fc3ab5b2e013..6af9b974ac09 100644
--- a/pkgs/tools/security/rustscan/default.nix
+++ b/pkgs/tools/security/rustscan/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
     patchShebangs fixtures/.rustscan_scripts/*
   '';
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   nativeCheckInputs = [
     perl
diff --git a/pkgs/tools/security/saml2aws/default.nix b/pkgs/tools/security/saml2aws/default.nix
index 14e408275e34..1afba85be34e 100644
--- a/pkgs/tools/security/saml2aws/default.nix
+++ b/pkgs/tools/security/saml2aws/default.nix
@@ -21,7 +21,7 @@ buildGoModule rec {
   vendorHash = "sha256-gtl8T8wXnpLgDZc6qSgFKpA+XbcLNHf20ieBkyNdE+s=";
 
   nativeBuildInputs = [ installShellFiles ];
-  buildInputs = lib.optionals stdenv.isDarwin [ AppKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ AppKit ];
 
   subPackages = [
     "."
diff --git a/pkgs/tools/security/schleuder/default.nix b/pkgs/tools/security/schleuder/default.nix
index cce88366a372..8429cb0ea0d0 100644
--- a/pkgs/tools/security/schleuder/default.nix
+++ b/pkgs/tools/security/schleuder/default.nix
@@ -24,7 +24,7 @@ bundlerApp {
   };
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     description = "Schleuder is an encrypting mailing list manager with remailing-capabilities";
     longDescription = ''
       Schleuder is a group's email-gateway: subscribers can exchange
diff --git a/pkgs/tools/security/scrypt/default.nix b/pkgs/tools/security/scrypt/default.nix
index d1deaa0ec41d..d199ee37725e 100644
--- a/pkgs/tools/security/scrypt/default.nix
+++ b/pkgs/tools/security/scrypt/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
   checkTarget = "test";
-  nativeCheckInputs = lib.optionals stdenv.isLinux [ util-linux ];
+  nativeCheckInputs = lib.optionals stdenv.hostPlatform.isLinux [ util-linux ];
 
   meta = with lib; {
     description = "Encryption utility";
diff --git a/pkgs/tools/security/sequoia-chameleon-gnupg/default.nix b/pkgs/tools/security/sequoia-chameleon-gnupg/default.nix
index 96d15250e163..81091848a93c 100644
--- a/pkgs/tools/security/sequoia-chameleon-gnupg/default.nix
+++ b/pkgs/tools/security/sequoia-chameleon-gnupg/default.nix
@@ -31,7 +31,7 @@ rustPlatform.buildRustPackage rec {
     nettle
     openssl
     sqlite
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
     darwin.apple_sdk.frameworks.SystemConfiguration
   ];
diff --git a/pkgs/tools/security/sheesy-cli/default.nix b/pkgs/tools/security/sheesy-cli/default.nix
index 9df5da79e8a6..a2dda4493852 100644
--- a/pkgs/tools/security/sheesy-cli/default.nix
+++ b/pkgs/tools/security/sheesy-cli/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ libgpg-error gpgme gettext installShellFiles ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   buildFeatures = [ "vault" "extract" "completions" "substitute" "process" ];
 
diff --git a/pkgs/tools/security/snowcrash/default.nix b/pkgs/tools/security/snowcrash/default.nix
index 69d310afb9f9..b787b0da59b7 100644
--- a/pkgs/tools/security/snowcrash/default.nix
+++ b/pkgs/tools/security/snowcrash/default.nix
@@ -19,7 +19,7 @@ buildGoModule rec {
 
   subPackages = [ "." ];
 
-  postFixup = lib.optionals (!stdenv.isDarwin) ''
+  postFixup = lib.optionals (!stdenv.hostPlatform.isDarwin) ''
     mv $out/bin/SNOWCRASH $out/bin/${pname}
   '';
 
diff --git a/pkgs/tools/security/softhsm/default.nix b/pkgs/tools/security/softhsm/default.nix
index e4c428b90b9a..d755e131d8f0 100644
--- a/pkgs/tools/security/softhsm/default.nix
+++ b/pkgs/tools/security/softhsm/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   ];
 
   propagatedBuildInputs =
-    lib.optionals stdenv.isDarwin [ libobjc Security ];
+    lib.optionals stdenv.hostPlatform.isDarwin [ libobjc Security ];
 
   buildInputs = [ botan2 sqlite ];
 
diff --git a/pkgs/tools/security/solo2-cli/default.nix b/pkgs/tools/security/solo2-cli/default.nix
index a241e8780101..387bf00e37bf 100644
--- a/pkgs/tools/security/solo2-cli/default.nix
+++ b/pkgs/tools/security/solo2-cli/default.nix
@@ -28,8 +28,8 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ installShellFiles pkg-config ];
 
   buildInputs = [ ]
-    ++ lib.optionals stdenv.isLinux [ pcsclite udev ]
-    ++ lib.optionals stdenv.isDarwin [ PCSC IOKit CoreFoundation AppKit ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ pcsclite udev ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ PCSC IOKit CoreFoundation AppKit ];
 
   postInstall = ''
     install -D 70-solo2.rules $out/lib/udev/rules.d/70-solo2.rules
diff --git a/pkgs/tools/security/spectre-cli/default.nix b/pkgs/tools/security/spectre-cli/default.nix
index 923046cdad4a..ba63b823e739 100644
--- a/pkgs/tools/security/spectre-cli/default.nix
+++ b/pkgs/tools/security/spectre-cli/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
 
   # Some tests are expected to fail on ARM64
   # See: https://gitlab.com/spectre.app/cli/-/issues/27#note_962950844
-  doCheck = !(stdenv.isLinux && stdenv.isAarch64);
+  doCheck = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
 
   checkPhase = ''
     mv ../spectre-cli-tests ../spectre_tests.xml ./
diff --git a/pkgs/tools/security/ssdeep/default.nix b/pkgs/tools/security/ssdeep/default.nix
index 68b8afdf6712..b3ec01ebdbbf 100644
--- a/pkgs/tools/security/ssdeep/default.nix
+++ b/pkgs/tools/security/ssdeep/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook ];
 
   # remove forbidden references to $TMPDIR
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     patchelf --shrink-rpath --allowed-rpath-prefixes "$NIX_STORE" "$out"/bin/*
   '';
 
diff --git a/pkgs/tools/security/ssh-mitm/default.nix b/pkgs/tools/security/ssh-mitm/default.nix
index 6694a9edaae2..4c59595ec936 100644
--- a/pkgs/tools/security/ssh-mitm/default.nix
+++ b/pkgs/tools/security/ssh-mitm/default.nix
@@ -63,7 +63,7 @@ buildPythonApplication rec {
     setuptools
     sshpubkeys
     wrapt
-  ] ++ lib.optionals stdenv.isDarwin [ setuptools ];
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ setuptools ];
   # fix for darwin users
 
   nativeBuildInputs = [ installShellFiles ];
diff --git a/pkgs/tools/security/sshuttle/default.nix b/pkgs/tools/security/sshuttle/default.nix
index 2090c4d396bd..e52453e8006d 100644
--- a/pkgs/tools/security/sshuttle/default.nix
+++ b/pkgs/tools/security/sshuttle/default.nix
@@ -42,7 +42,7 @@ python3Packages.buildPythonApplication rec {
     installManPage docs/_build/man/*
 
     wrapProgram $out/bin/sshuttle \
-      --prefix PATH : "${lib.makeBinPath ([ coreutils openssh procps ] ++ lib.optionals stdenv.isLinux [ iptables nettools ])}" \
+      --prefix PATH : "${lib.makeBinPath ([ coreutils openssh procps ] ++ lib.optionals stdenv.hostPlatform.isLinux [ iptables nettools ])}" \
   '';
 
   meta = with lib; {
diff --git a/pkgs/tools/security/step-ca/default.nix b/pkgs/tools/security/step-ca/default.nix
index 549cfa6a5224..f37c05f93fbb 100644
--- a/pkgs/tools/security/step-ca/default.nix
+++ b/pkgs/tools/security/step-ca/default.nix
@@ -32,8 +32,8 @@ buildGoModule rec {
   nativeBuildInputs = lib.optionals hsmSupport [ pkg-config ];
 
   buildInputs =
-    lib.optionals (hsmSupport && stdenv.isLinux) [ pcsclite ]
-    ++ lib.optionals (hsmSupport && stdenv.isDarwin) [ PCSC ];
+    lib.optionals (hsmSupport && stdenv.hostPlatform.isLinux) [ pcsclite ]
+    ++ lib.optionals (hsmSupport && stdenv.hostPlatform.isDarwin) [ PCSC ];
 
   postPatch = ''
     substituteInPlace systemd/step-ca.service --replace "/bin/kill" "${coreutils}/bin/kill"
diff --git a/pkgs/tools/security/step-kms-plugin/default.nix b/pkgs/tools/security/step-kms-plugin/default.nix
index 3eaf3a9c9cb4..ba35b7c11087 100644
--- a/pkgs/tools/security/step-kms-plugin/default.nix
+++ b/pkgs/tools/security/step-kms-plugin/default.nix
@@ -48,6 +48,6 @@ buildGoModule rec {
     maintainers = with maintainers; [ qbit ];
     mainProgram = "step-kms-plugin";
     # can't find pcsclite header files
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/security/swtpm/default.nix b/pkgs/tools/security/swtpm/default.nix
index b39c43a8e1b6..6b1bdb4c03ab 100644
--- a/pkgs/tools/security/swtpm/default.nix
+++ b/pkgs/tools/security/swtpm/default.nix
@@ -41,14 +41,14 @@ stdenv.mkDerivation (finalAttrs: {
     openssl libtasn1
     glib json-glib
     gnutls
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     fuse
     libseccomp
   ];
 
   configureFlags = [
     "--localstatedir=/var"
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     "--with-cuse"
   ];
 
diff --git a/pkgs/tools/security/tcpcrypt/default.nix b/pkgs/tools/security/tcpcrypt/default.nix
index 8b00431b6cbe..1d34fdd4e710 100644
--- a/pkgs/tools/security/tcpcrypt/default.nix
+++ b/pkgs/tools/security/tcpcrypt/default.nix
@@ -19,12 +19,12 @@ stdenv.mkDerivation rec {
   outputs = [ "bin" "dev" "out" ];
   nativeBuildInputs = [ autoreconfHook ];
   buildInputs = [ openssl libpcap ]
-    ++ lib.optionals stdenv.isLinux [ libcap libnfnetlink libnetfilter_conntrack libnetfilter_queue ];
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libcap libnfnetlink libnetfilter_conntrack libnetfilter_queue ];
 
   enableParallelBuilding = true;
 
   meta = with lib; {
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
     homepage = "http://tcpcrypt.org/";
     description = "Fast TCP encryption";
     platforms = platforms.all;
diff --git a/pkgs/tools/security/thc-hydra/default.nix b/pkgs/tools/security/thc-hydra/default.nix
index aa0e9fd8fb43..412691d2b940 100644
--- a/pkgs/tools/security/thc-hydra/default.nix
+++ b/pkgs/tools/security/thc-hydra/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
       --replace-fail "-lcurses" "-lncurses"
   '';
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-undef-prefix";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-undef-prefix";
 
   nativeBuildInputs = lib.optionals withGUI [ pkg-config makeWrapper ];
 
diff --git a/pkgs/tools/security/tor/default.nix b/pkgs/tools/security/tor/default.nix
index 30eb8360fe39..164526a8e133 100644
--- a/pkgs/tools/security/tor/default.nix
+++ b/pkgs/tools/security/tor/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libevent openssl zlib xz zstd scrypt ] ++
-    lib.optionals stdenv.isLinux [ libseccomp systemd libcap ];
+    lib.optionals stdenv.hostPlatform.isLinux [ libseccomp systemd libcap ];
 
   patches = [ ./disable-monotonic-timer-tests.patch ];
 
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
     lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [ "--disable-tool-name-check" ]
     ++
     # sandbox is broken on aarch64-linux https://gitlab.torproject.org/tpo/core/tor/-/issues/40599
-    lib.optionals (stdenv.isLinux && stdenv.isAarch64) [ "--disable-seccomp" ]
+    lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) [ "--disable-seccomp" ]
   ;
 
   NIX_CFLAGS_LINK = lib.optionalString stdenv.cc.isGNU "-lgcc_s";
@@ -72,7 +72,7 @@ stdenv.mkDerivation rec {
 
   # disable tests on linux aarch32
   # https://gitlab.torproject.org/tpo/core/tor/-/issues/40912
-  doCheck = !(stdenv.isLinux && stdenv.isAarch32);
+  doCheck = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch32);
 
   postInstall = ''
     mkdir -p $geoip/share/tor
diff --git a/pkgs/tools/security/tor/torsocks.nix b/pkgs/tools/security/tor/torsocks.nix
index 0ad36688bd6b..8b09bfc3bf9b 100644
--- a/pkgs/tools/security/tor/torsocks.nix
+++ b/pkgs/tools/security/tor/torsocks.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     sed -i \
       -e 's,\(local app_path\)=`which $1`,\1=`type -P $1`,' \
       src/bin/torsocks.in
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     sed -i \
       -e 's,\(local getcap\)=.*,\1=${libcap}/bin/getcap,' \
       src/bin/torsocks.in
diff --git a/pkgs/tools/security/vault/default.nix b/pkgs/tools/security/vault/default.nix
index 32ad1196edca..007edb9c6abe 100644
--- a/pkgs/tools/security/vault/default.nix
+++ b/pkgs/tools/security/vault/default.nix
@@ -35,7 +35,7 @@ buildGoModule rec {
   postInstall = ''
     echo "complete -C $out/bin/vault vault" > vault.bash
     installShellCompletion vault.bash
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     wrapProgram $out/bin/vault \
       --prefix PATH ${lib.makeBinPath [ gawk glibc ]}
   '';
diff --git a/pkgs/tools/security/vault/vault-bin.nix b/pkgs/tools/security/vault/vault-bin.nix
index 7a829e1ad271..9cfdc187eaee 100644
--- a/pkgs/tools/security/vault/vault-bin.nix
+++ b/pkgs/tools/security/vault/vault-bin.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
 
   dontConfigure = true;
   dontBuild = true;
-  dontStrip = stdenv.isDarwin;
+  dontStrip = stdenv.hostPlatform.isDarwin;
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/tools/security/vaultwarden/default.nix b/pkgs/tools/security/vaultwarden/default.nix
index 137f9e6c9564..f28bc52fdbc7 100644
--- a/pkgs/tools/security/vaultwarden/default.nix
+++ b/pkgs/tools/security/vaultwarden/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ libiconv Security CoreServices SystemConfiguration ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security CoreServices SystemConfiguration ]
     ++ lib.optional (dbBackend == "mysql") libmysqlclient
     ++ lib.optional (dbBackend == "postgresql") postgresql;
 
diff --git a/pkgs/tools/security/yubihsm-shell/default.nix b/pkgs/tools/security/yubihsm-shell/default.nix
index 8567798ea82c..90af2f22068a 100644
--- a/pkgs/tools/security/yubihsm-shell/default.nix
+++ b/pkgs/tools/security/yubihsm-shell/default.nix
@@ -47,18 +47,18 @@ stdenv.mkDerivation rec {
     libedit
     curl
     openssl
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     pcsclite.dev
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.PCSC
     libiconv
   ];
 
-  preBuild = lib.optionalString stdenv.isLinux ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isLinux ''
     NIX_CFLAGS_COMPILE="$(pkg-config --cflags libpcsclite) $NIX_CFLAGS_COMPILE"
   '';
 
-  cmakeFlags = lib.optionals stdenv.isDarwin [
+  cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [
     "-DDISABLE_LTO=ON"
   ];
 
diff --git a/pkgs/tools/security/yubikey-agent/default.nix b/pkgs/tools/security/yubikey-agent/default.nix
index f43e83e575e7..f2e290ade6db 100644
--- a/pkgs/tools/security/yubikey-agent/default.nix
+++ b/pkgs/tools/security/yubikey-agent/default.nix
@@ -12,12 +12,12 @@ buildGoModule rec {
   };
 
   buildInputs =
-    lib.optional stdenv.isLinux (lib.getDev pcsclite)
-    ++ lib.optional stdenv.isDarwin (darwin.apple_sdk.frameworks.PCSC);
+    lib.optional stdenv.hostPlatform.isLinux (lib.getDev pcsclite)
+    ++ lib.optional stdenv.hostPlatform.isDarwin (darwin.apple_sdk.frameworks.PCSC);
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config ];
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
 
-  postPatch = lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace main.go --replace 'notify-send' ${libnotify}/bin/notify-send
   '';
 
@@ -29,7 +29,7 @@ buildGoModule rec {
 
   ldflags = [ "-s" "-w" "-X main.Version=${version}" ];
 
-  postInstall = lib.optionalString stdenv.isLinux ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isLinux ''
     mkdir -p $out/lib/systemd/user
     substitute contrib/systemd/user/yubikey-agent.service $out/lib/systemd/user/yubikey-agent.service \
       --replace 'ExecStart=yubikey-agent' "ExecStart=$out/bin/yubikey-agent"
diff --git a/pkgs/tools/security/zmap/default.nix b/pkgs/tools/security/zmap/default.nix
index 1749c9ef6d7f..b7a9986434eb 100644
--- a/pkgs/tools/security/zmap/default.nix
+++ b/pkgs/tools/security/zmap/default.nix
@@ -26,6 +26,6 @@ stdenv.mkDerivation rec {
     description = "Fast single packet network scanner designed for Internet-wide network surveys";
     maintainers = with maintainers; [ ma27 ];
     platforms = platforms.unix;
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/system/bfs/default.nix b/pkgs/tools/system/bfs/default.nix
index 464c5f67ed57..e950cd957ea1 100644
--- a/pkgs/tools/system/bfs/default.nix
+++ b/pkgs/tools/system/bfs/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-WIJyCpnlD6/c7PG+ZPmUT8qfPelRY9Od1Dk9Ro1y1yY=";
   };
 
-  buildInputs = [ oniguruma ] ++ lib.optionals stdenv.isLinux [ libcap acl liburing ];
+  buildInputs = [ oniguruma ] ++ lib.optionals stdenv.hostPlatform.isLinux [ libcap acl liburing ];
 
   configureFlags = [ "--enable-release" ];
   makeFlags = [ "PREFIX=$(out)" ];
diff --git a/pkgs/tools/system/btop/default.nix b/pkgs/tools/system/btop/default.nix
index 66745ccf86a8..0f67b4111aa6 100644
--- a/pkgs/tools/system/btop/default.nix
+++ b/pkgs/tools/system/btop/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
     autoAddDriverRunpath
   ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk_11_0.frameworks.CoreFoundation
     darwin.apple_sdk_11_0.frameworks.IOKit
   ];
diff --git a/pkgs/tools/system/clinfo/default.nix b/pkgs/tools/system/clinfo/default.nix
index 50e72498bf64..465bba682b0e 100644
--- a/pkgs/tools/system/clinfo/default.nix
+++ b/pkgs/tools/system/clinfo/default.nix
@@ -11,10 +11,10 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-1jZP4SnLIHh3vQJLBp+j/eQ1c8XBGFR2hjYxflhpWAU=";
   };
 
-  buildInputs = lib.optionals (!stdenv.isDarwin) [
+  buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [
     ocl-icd
     opencl-headers
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     OpenCL
   ];
 
diff --git a/pkgs/tools/system/collectd/default.nix b/pkgs/tools/system/collectd/default.nix
index bbcc9f704bc4..b75cdb19de16 100644
--- a/pkgs/tools/system/collectd/default.nix
+++ b/pkgs/tools/system/collectd/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config autoreconfHook ];
   buildInputs = [
     libtool
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.ApplicationServices
   ] ++ plugins.buildInputs;
 
diff --git a/pkgs/tools/system/collectd/plugins.nix b/pkgs/tools/system/collectd/plugins.nix
index 9ca18b06203d..7202ec795e8b 100644
--- a/pkgs/tools/system/collectd/plugins.nix
+++ b/pkgs/tools/system/collectd/plugins.nix
@@ -51,10 +51,10 @@ let
   plugins = {
     amqp.buildInputs = [
       yajl
-    ] ++ lib.optionals stdenv.isLinux [ rabbitmq-c ];
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [ rabbitmq-c ];
     apache.buildInputs = [ curl ];
     ascent.buildInputs = [ curl libxml2 ];
-    battery.buildInputs = lib.optionals stdenv.isDarwin [
+    battery.buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
       IOKit
     ];
     bind.buildInputs = [ curl libxml2 ];
@@ -63,30 +63,30 @@ let
     curl_json.buildInputs = [ curl yajl ];
     curl_xml.buildInputs = [ curl libxml2 ];
     dbi.buildInputs = [ libdbi ];
-    disk.buildInputs = lib.optionals stdenv.isLinux [
+    disk.buildInputs = lib.optionals stdenv.hostPlatform.isLinux [
       udev
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       IOKit
     ];
     dns.buildInputs = [ libpcap ];
     ipmi.buildInputs = [ openipmi ];
     iptables.buildInputs = [
       libpcap
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       iptables libmnl
     ];
     java.buildInputs = [ jdk libgcrypt libxml2 ];
     log_logstash.buildInputs = [ yajl ];
     lua.buildInputs = [ lua ];
     memcachec.buildInputs = [ libmemcached cyrus_sasl ];
-    modbus.buildInputs = lib.optionals stdenv.isLinux [ libmodbus ];
+    modbus.buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libmodbus ];
     mqtt.buildInputs = [ mosquitto ];
     mysql.buildInputs = lib.optionals (libmysqlclient != null) [
       libmysqlclient
     ];
     netlink.buildInputs = [
       libpcap
-    ] ++ lib.optionals stdenv.isLinux [
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [
       libmnl
     ];
     network.buildInputs = [ libgcrypt ];
@@ -104,15 +104,15 @@ let
     redis.buildInputs = [ hiredis ];
     rrdcached.buildInputs = [ rrdtool libxml2 ];
     rrdtool.buildInputs = [ rrdtool libxml2 ];
-    sensors.buildInputs = lib.optionals stdenv.isLinux [ lm_sensors ];
-    sigrok.buildInputs = lib.optionals stdenv.isLinux [ libsigrok udev ];
-    smart.buildInputs = lib.optionals stdenv.isLinux [ libatasmart udev ];
-    snmp.buildInputs = lib.optionals stdenv.isLinux [ net-snmp ];
-    snmp_agent.buildInputs = lib.optionals stdenv.isLinux [ net-snmp ];
+    sensors.buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ lm_sensors ];
+    sigrok.buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libsigrok udev ];
+    smart.buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libatasmart udev ];
+    snmp.buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ net-snmp ];
+    snmp_agent.buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ net-snmp ];
     varnish.buildInputs = [ curl varnish ];
     virt.buildInputs = [
       libvirt libxml2 yajl
-    ] ++ lib.optionals stdenv.isLinux [ lvm2 udev ];
+    ] ++ lib.optionals stdenv.hostPlatform.isLinux [ lvm2 udev ];
     write_http.buildInputs = [ curl yajl ];
     write_kafka.buildInputs = [ yajl rdkafka ];
     write_log.buildInputs = [ yajl ];
diff --git a/pkgs/tools/system/fakeroot/default.nix b/pkgs/tools/system/fakeroot/default.nix
index c386536e1f17..518d54898d9b 100644
--- a/pkgs/tools/system/fakeroot/default.nix
+++ b/pkgs/tools/system/fakeroot/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-j1qSMPNCtAxClqYqWkRNQmtxkitYi7g/9KtQ5XqcX3w=";
   };
 
-  patches = lib.optionals stdenv.isLinux [
+  patches = lib.optionals stdenv.hostPlatform.isLinux [
     ./einval.patch
 
     # patches needed for musl libc, borrowed from alpine packaging.
@@ -48,7 +48,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   nativeBuildInputs = [ autoreconfHook po4a ];
-  buildInputs = lib.optional (!stdenv.isDarwin) libcap;
+  buildInputs = lib.optional (!stdenv.hostPlatform.isDarwin) libcap;
 
   postUnpack = ''
     sed -i \
diff --git a/pkgs/tools/system/fio/default.nix b/pkgs/tools/system/fio/default.nix
index d73d8dda7a77..11c1c1d945de 100644
--- a/pkgs/tools/system/fio/default.nix
+++ b/pkgs/tools/system/fio/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [ python3 zlib ]
-    ++ lib.optional (!stdenv.isDarwin) libaio;
+    ++ lib.optional (!stdenv.hostPlatform.isDarwin) libaio;
 
   # ./configure does not support autoconf-style --build=/--host=.
   # We use $CC instead.
diff --git a/pkgs/tools/system/foremost/default.nix b/pkgs/tools/system/foremost/default.nix
index a1a09826c537..bdf846e029d3 100644
--- a/pkgs/tools/system/foremost/default.nix
+++ b/pkgs/tools/system/foremost/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   #   ld: api.o:(.bss+0xbdba0): multiple definition of `wildcard'; main.o:(.bss+0xbd760): first defined here
   env.NIX_CFLAGS_COMPILE = "-fcommon";
 
-  makeFlags = [ "PREFIX=$(out)" ] ++ lib.optionals stdenv.isDarwin [ "mac" ];
+  makeFlags = [ "PREFIX=$(out)" ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "mac" ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/tools/system/gdu/default.nix b/pkgs/tools/system/gdu/default.nix
index dfb1179a0897..4ba04921484f 100644
--- a/pkgs/tools/system/gdu/default.nix
+++ b/pkgs/tools/system/gdu/default.nix
@@ -38,7 +38,7 @@ buildGoModule rec {
     installManPage gdu.1
   '';
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkFlags = [
     # https://github.com/dundee/gdu/issues/371
diff --git a/pkgs/tools/system/gotop/default.nix b/pkgs/tools/system/gotop/default.nix
index 5305b127a1c5..b2279e0f13d2 100644
--- a/pkgs/tools/system/gotop/default.nix
+++ b/pkgs/tools/system/gotop/default.nix
@@ -32,7 +32,7 @@ buildGoModule rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ IOKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ IOKit ];
 
   preCheck = ''
     export HOME=$(mktemp -d)
diff --git a/pkgs/tools/system/gptfdisk/default.nix b/pkgs/tools/system/gptfdisk/default.nix
index 2718be70c71f..798d1b223e5c 100644
--- a/pkgs/tools/system/gptfdisk/default.nix
+++ b/pkgs/tools/system/gptfdisk/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     patchShebangs gdisk_test.sh
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile.mac --replace \
       "-mmacosx-version-min=10.4" "-mmacosx-version-min=10.6"
     substituteInPlace Makefile.mac --replace \
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
       "/usr/local/Cellar/ncurses/6.2/lib/libncurses.dylib" "${ncurses.out}/lib/libncurses.dylib"
   '';
 
-  buildPhase = lib.optionalString stdenv.isDarwin "make -f Makefile.mac";
+  buildPhase = lib.optionalString stdenv.hostPlatform.isDarwin "make -f Makefile.mac";
   buildInputs = [ libuuid popt icu ncurses ];
 
   installPhase = ''
diff --git a/pkgs/tools/system/gptman/default.nix b/pkgs/tools/system/gptman/default.nix
index cd9fd4361563..484ab05a85f2 100644
--- a/pkgs/tools/system/gptman/default.nix
+++ b/pkgs/tools/system/gptman/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-P+qez0oVsHBiaBYban2o8MRvF8ElLf5zb+p+tYunWWA=";
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   buildFeatures = [ "cli" ];
 
diff --git a/pkgs/tools/system/htop/default.nix b/pkgs/tools/system/htop/default.nix
index 55e9b5e9365c..c0a689c4c621 100644
--- a/pkgs/tools/system/htop/default.nix
+++ b/pkgs/tools/system/htop/default.nix
@@ -3,11 +3,11 @@
 , IOKit
 , libcap
 , libnl
-, sensorsSupport ? stdenv.isLinux, lm_sensors
+, sensorsSupport ? stdenv.hostPlatform.isLinux, lm_sensors
 , systemdSupport ? lib.meta.availableOn stdenv.hostPlatform systemd, systemd
 }:
 
-assert systemdSupport -> stdenv.isLinux;
+assert systemdSupport -> stdenv.hostPlatform.isLinux;
 
 stdenv.mkDerivation rec {
   pname = "htop";
@@ -21,18 +21,18 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ autoreconfHook ]
-    ++ lib.optional stdenv.isLinux pkg-config
+    ++ lib.optional stdenv.hostPlatform.isLinux pkg-config
   ;
 
   buildInputs = [ ncurses ]
-    ++ lib.optional stdenv.isDarwin IOKit
-    ++ lib.optionals stdenv.isLinux [ libcap libnl ]
+    ++ lib.optional stdenv.hostPlatform.isDarwin IOKit
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libcap libnl ]
     ++ lib.optional sensorsSupport lm_sensors
     ++ lib.optional systemdSupport systemd
   ;
 
   configureFlags = [ "--enable-unicode" "--sysconfdir=/etc" ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       "--enable-affinity"
       "--enable-capabilities"
       "--enable-delayacct"
diff --git a/pkgs/tools/system/java-service-wrapper/default.nix b/pkgs/tools/system/java-service-wrapper/default.nix
index 3bbcd917fb6b..bd0dba9a024f 100644
--- a/pkgs/tools/system/java-service-wrapper/default.nix
+++ b/pkgs/tools/system/java-service-wrapper/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
     export JAVA_TOOL_OPTIONS=-Djava.home=$JAVA_HOME
     export CLASSPATH=${jdk}/lib/openjdk/lib/tools.jar
 
-    ant -f build.xml -Dbits=${if stdenv.isi686 then "32" else "64"}
+    ant -f build.xml -Dbits=${if stdenv.hostPlatform.isi686 then "32" else "64"}
 
     runHook postBuild
   '';
diff --git a/pkgs/tools/system/kanata/default.nix b/pkgs/tools/system/kanata/default.nix
index 682158af76ca..b55d5227b0d1 100644
--- a/pkgs/tools/system/kanata/default.nix
+++ b/pkgs/tools/system/kanata/default.nix
@@ -43,7 +43,7 @@ rustPlatform.buildRustPackage rec {
     '';
   };
 
-  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.IOKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.IOKit ];
 
   buildFeatures = lib.optional withCmd "cmd";
 
@@ -62,6 +62,6 @@ rustPlatform.buildRustPackage rec {
     maintainers = with maintainers; [ bmanuel linj ];
     platforms = platforms.unix;
     mainProgram = "kanata";
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/system/netdata/default.nix b/pkgs/tools/system/netdata/default.nix
index c7c7554914c7..b8746229d81e 100644
--- a/pkgs/tools/system/netdata/default.nix
+++ b/pkgs/tools/system/netdata/default.nix
@@ -42,15 +42,15 @@
   withDBengine ? true,
   withDebug ? false,
   withEbpf ? false,
-  withIpmi ? (stdenv.isLinux),
-  withNetfilter ? (stdenv.isLinux),
-  withNetworkViewer ? (stdenv.isLinux),
+  withIpmi ? (stdenv.hostPlatform.isLinux),
+  withNetfilter ? (stdenv.hostPlatform.isLinux),
+  withNetworkViewer ? (stdenv.hostPlatform.isLinux),
   withSsl ? true,
-  withSystemdJournal ? (stdenv.isLinux),
+  withSystemdJournal ? (stdenv.hostPlatform.isLinux),
   zlib,
 }:
 let
-  stdenv' = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+  stdenv' = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
 in
 stdenv'.mkDerivation (finalAttrs: {
   version = "1.47.1";
@@ -96,7 +96,7 @@ stdenv'.mkDerivation (finalAttrs: {
       zlib
       libyaml
     ]
-    ++ lib.optionals stdenv.isDarwin (
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (
       with darwin.apple_sdk.frameworks;
       [
         CoreFoundation
@@ -104,7 +104,7 @@ stdenv'.mkDerivation (finalAttrs: {
         libossp_uuid
       ]
     )
-    ++ lib.optionals (stdenv.isLinux) [
+    ++ lib.optionals (stdenv.hostPlatform.isLinux) [
       libcap
       libuuid
       lm_sensors
@@ -153,7 +153,7 @@ stdenv'.mkDerivation (finalAttrs: {
       # Relocate one folder above.
       mv $out/usr/* $out/
     ''
-    + lib.optionalString (stdenv.isLinux) ''
+    + lib.optionalString (stdenv.hostPlatform.isLinux) ''
       # rename this plugin so netdata will look for setuid wrapper
       mv $out/libexec/netdata/plugins.d/apps.plugin \
          $out/libexec/netdata/plugins.d/apps.plugin.org
diff --git a/pkgs/tools/system/nsc/default.nix b/pkgs/tools/system/nsc/default.nix
index f9aeba937a5f..88dafe7f4f3e 100644
--- a/pkgs/tools/system/nsc/default.nix
+++ b/pkgs/tools/system/nsc/default.nix
@@ -50,7 +50,7 @@ buildGoModule rec {
   # Then the `-` are removed from the path unintentionally and the test fails.
   # This should be fixed upstream to avoid mangling the path when
   # removing the table decorations from the command output.
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   meta = {
     description = "Tool for creating NATS account and user access configurations";
diff --git a/pkgs/tools/system/plan9port/default.nix b/pkgs/tools/system/plan9port/default.nix
index 56e191232452..6d1e778da376 100644
--- a/pkgs/tools/system/plan9port/default.nix
+++ b/pkgs/tools/system/plan9port/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   '';
 
   nativeBuildInputs = [ ed ];
-  buildInputs = [ perl which ] ++ (if !stdenv.isDarwin then [
+  buildInputs = [ perl which ] ++ (if !stdenv.hostPlatform.isDarwin then [
     fontconfig freetype # fontsrv uses these
     libX11 libXext libXt xorgproto
   ] else [
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     CC9='$(command -v $CC)'
     CFLAGS='$NIX_CFLAGS_COMPILE'
     LDFLAGS='$(for f in $NIX_LDFLAGS; do echo "-Wl,$f"; done | xargs echo)'
-    ${lib.optionalString (!stdenv.isDarwin) "X11='${libXt.dev}/include'"}
+    ${lib.optionalString (!stdenv.hostPlatform.isDarwin) "X11='${libXt.dev}/include'"}
     EOF
 
     # make '9' available in the path so there's some way to find out $PLAN9
diff --git a/pkgs/tools/system/rowhammer-test/default.nix b/pkgs/tools/system/rowhammer-test/default.nix
index c19f7a54f0dd..0287a3d3a5fb 100644
--- a/pkgs/tools/system/rowhammer-test/default.nix
+++ b/pkgs/tools/system/rowhammer-test/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation {
     sha256 = "1fbfcnm5gjish47wdvikcsgzlb5vnlfqlzzm6mwiw2j5qkq0914i";
   };
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isi686 "-Wno-error=format";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isi686 "-Wno-error=format";
 
   buildPhase = "sh -e make.sh";
 
diff --git a/pkgs/tools/system/runit/default.nix b/pkgs/tools/system/runit/default.nix
index 2553c07cd6b5..10333d0f6035 100644
--- a/pkgs/tools/system/runit/default.nix
+++ b/pkgs/tools/system/runit/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   buildInputs = lib.optionals static [ stdenv.cc.libc stdenv.cc.libc.static ] ++
-    lib.optional stdenv.isDarwin darwin.apple_sdk.libs.utmp;
+    lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.libs.utmp;
 
   postPatch = ''
     sed -i "s,\(#define RUNIT\) .*,\1 \"$out/bin/runit\"," src/runit.h
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
 
     # Both of these are originally hard-coded to gcc
     echo ${stdenv.cc.targetPrefix}cc > conf-cc
-    echo ${stdenv.cc.targetPrefix}cc ${lib.optionalString stdenv.isDarwin "-Xlinker -x "}> conf-ld
+    echo ${stdenv.cc.targetPrefix}cc ${lib.optionalString stdenv.hostPlatform.isDarwin "-Xlinker -x "}> conf-ld
   '';
 
   installPhase = ''
diff --git a/pkgs/tools/system/s-tui/default.nix b/pkgs/tools/system/s-tui/default.nix
index 15bedadccef0..c153b3033f86 100644
--- a/pkgs/tools/system/s-tui/default.nix
+++ b/pkgs/tools/system/s-tui/default.nix
@@ -31,7 +31,7 @@ python3Packages.buildPythonPackage rec {
     description = "Stress-Terminal UI monitoring tool";
     license = licenses.gpl2Plus;
     maintainers = [ ];
-    broken = stdenv.isDarwin; # https://github.com/amanusk/s-tui/issues/49
+    broken = stdenv.hostPlatform.isDarwin; # https://github.com/amanusk/s-tui/issues/49
     mainProgram = "s-tui";
   };
 }
diff --git a/pkgs/tools/system/smartmontools/default.nix b/pkgs/tools/system/smartmontools/default.nix
index 50765fa2e170..b8c594dde470 100644
--- a/pkgs/tools/system/smartmontools/default.nix
+++ b/pkgs/tools/system/smartmontools/default.nix
@@ -54,8 +54,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
   buildInputs =
-    lib.optionals stdenv.isLinux [ systemdLibs ]
-    ++ lib.optionals stdenv.isDarwin [
+    lib.optionals stdenv.hostPlatform.isLinux [ systemdLibs ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
       IOKit
       ApplicationServices
     ];
diff --git a/pkgs/tools/system/stress-ng/default.nix b/pkgs/tools/system/stress-ng/default.nix
index ebd209d2c8fd..c189606cd007 100644
--- a/pkgs/tools/system/stress-ng/default.nix
+++ b/pkgs/tools/system/stress-ng/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
   # install phase without checking the dependencies. This will prevent
   # triggering the rebuild. Why this only happens on i686 remains a
   # mystery, though. :-(
-  enableParallelBuilding = (!stdenv.isi686);
+  enableParallelBuilding = (!stdenv.hostPlatform.isi686);
 
   meta = with lib; {
     description = "Stress test a computer system";
diff --git a/pkgs/tools/system/testdisk/default.nix b/pkgs/tools/system/testdisk/default.nix
index e4d24802a54f..8761576d19b0 100644
--- a/pkgs/tools/system/testdisk/default.nix
+++ b/pkgs/tools/system/testdisk/default.nix
@@ -7,8 +7,8 @@
 , libjpeg
 , zlib
 , libewf
-, enableNtfs ? !stdenv.isDarwin, ntfs3g ? null
-, enableExtFs ? !stdenv.isDarwin, e2fsprogs ? null
+, enableNtfs ? !stdenv.hostPlatform.isDarwin, ntfs3g ? null
+, enableExtFs ? !stdenv.hostPlatform.isDarwin, e2fsprogs ? null
 , enableQt ? false, qtbase ? null, qttools ? null, qwt ? null
 }:
 
diff --git a/pkgs/tools/system/tree/default.nix b/pkgs/tools/system/tree/default.nix
index 069723b7bdb3..fbd0f08d110a 100644
--- a/pkgs/tools/system/tree/default.nix
+++ b/pkgs/tools/system/tree/default.nix
@@ -4,14 +4,14 @@ let
   # These settings are found in the Makefile, but there seems to be no
   # way to select one or the other setting other than editing the file
   # manually, so we have to duplicate the know how here.
-  systemFlags = lib.optionalString stdenv.isDarwin ''
+  systemFlags = lib.optionalString stdenv.hostPlatform.isDarwin ''
     CFLAGS="-O2 -Wall -fomit-frame-pointer -no-cpp-precomp"
     LDFLAGS=
-  '' + lib.optionalString stdenv.isCygwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isCygwin ''
     CFLAGS="-O2 -Wall -fomit-frame-pointer"
     LDFLAGS=-s
     TREE_DEST=tree.exe
-  '' + lib.optionalString (stdenv.isFreeBSD || stdenv.isOpenBSD) ''
+  '' + lib.optionalString (stdenv.hostPlatform.isFreeBSD || stdenv.hostPlatform.isOpenBSD) ''
     CFLAGS="-O2 -Wall -fomit-frame-pointer"
     LDFLAGS=-s
   ''; # use linux flags by default
diff --git a/pkgs/tools/system/zenith/default.nix b/pkgs/tools/system/zenith/default.nix
index 4af272ccb49d..ffb530600bd3 100644
--- a/pkgs/tools/system/zenith/default.nix
+++ b/pkgs/tools/system/zenith/default.nix
@@ -7,7 +7,7 @@
 , makeWrapper
 }:
 
-assert nvidiaSupport -> stdenv.isLinux;
+assert nvidiaSupport -> stdenv.hostPlatform.isLinux;
 
 rustPlatform.buildRustPackage rec {
   pname = "zenith";
@@ -34,7 +34,7 @@ rustPlatform.buildRustPackage rec {
   };
 
   nativeBuildInputs = [ rustPlatform.bindgenHook ] ++ lib.optional nvidiaSupport makeWrapper;
-  buildInputs = lib.optionals stdenv.isDarwin [ IOKit ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ IOKit ];
 
   buildFeatures = lib.optional nvidiaSupport "nvidia";
 
diff --git a/pkgs/tools/text/amber/default.nix b/pkgs/tools/text/amber/default.nix
index 0b81281fad1a..ce8243770b04 100644
--- a/pkgs/tools/text/amber/default.nix
+++ b/pkgs/tools/text/amber/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-nBSgP30Izskq9RbhVIyqWzZgG5ZWHVdiukldw+Q0rco=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security ];
 
   meta = with lib; {
     description = "Code search-and-replace tool";
diff --git a/pkgs/tools/text/autocorrect/default.nix b/pkgs/tools/text/autocorrect/default.nix
index 3546b79e0a52..c752c9cf11c1 100644
--- a/pkgs/tools/text/autocorrect/default.nix
+++ b/pkgs/tools/text/autocorrect/default.nix
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
     cp ${./Cargo.lock} Cargo.lock
   '';
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
   cargoBuildFlags = [ "-p" "autocorrect-cli" ];
   cargoTestFlags = [ "-p" "autocorrect-cli" ];
diff --git a/pkgs/tools/text/chars/default.nix b/pkgs/tools/text/chars/default.nix
index 509953e8059b..ca2ad027c2cf 100644
--- a/pkgs/tools/text/chars/default.nix
+++ b/pkgs/tools/text/chars/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-wqyExG4haco6jg1zpbouz3xMR7sjiVIAC16PnDU2tc8=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "Commandline tool to display information about unicode characters";
diff --git a/pkgs/tools/text/clima/default.nix b/pkgs/tools/text/clima/default.nix
index 65483e115269..f7e6ee15d7f8 100644
--- a/pkgs/tools/text/clima/default.nix
+++ b/pkgs/tools/text/clima/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-jKY+Ta6lqMBUlqSViKk3W0CiO8oU+ucmleKDYRA54HQ=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/text/cmigemo/default.nix b/pkgs/tools/text/cmigemo/default.nix
index 20cee369e73f..b7b08a762736 100644
--- a/pkgs/tools/text/cmigemo/default.nix
+++ b/pkgs/tools/text/cmigemo/default.nix
@@ -24,9 +24,9 @@ stdenv.mkDerivation {
 
   makeFlags = [ "INSTALL=install" ];
 
-  buildFlags = [ (if stdenv.isDarwin then "osx-all" else "gcc-all") ];
+  buildFlags = [ (if stdenv.hostPlatform.isDarwin then "osx-all" else "gcc-all") ];
 
-  installTargets = [ (if stdenv.isDarwin then "osx-install" else "gcc-install") ];
+  installTargets = [ (if stdenv.hostPlatform.isDarwin then "osx-install" else "gcc-install") ];
 
   meta = with lib; {
     description = "Tool that supports Japanese incremental search with Romaji";
diff --git a/pkgs/tools/text/coloursum/default.nix b/pkgs/tools/text/coloursum/default.nix
index 78f583e3f73d..8e84a1de14bc 100644
--- a/pkgs/tools/text/coloursum/default.nix
+++ b/pkgs/tools/text/coloursum/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-dhcTpff4h37MHNbLoYUZiolSclSGcFrMJ3kKLCZAVAw=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "Colourise your checksum output";
diff --git a/pkgs/tools/text/dcs/default.nix b/pkgs/tools/text/dcs/default.nix
index 0f438e4ff571..458a76cf5913 100644
--- a/pkgs/tools/text/dcs/default.nix
+++ b/pkgs/tools/text/dcs/default.nix
@@ -41,7 +41,7 @@ buildGoModule {
     homepage = "https://github.com/Debian/dcs";
     license = licenses.bsd3;
     maintainers = [ ];
-    broken = stdenv.isAarch64
-      || stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/dcs.x86_64-darwin
+    broken = stdenv.hostPlatform.isAarch64
+      || stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/dcs.x86_64-darwin
   };
 }
diff --git a/pkgs/tools/text/diffr/default.nix b/pkgs/tools/text/diffr/default.nix
index 9abc2fac5150..fbdf221d1206 100644
--- a/pkgs/tools/text/diffr/default.nix
+++ b/pkgs/tools/text/diffr/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-RmQu55OnKfeuDGcJrfjhMKnxDatdowkvh3Kh4N8I8Sg=";
 
-  buildInputs = (lib.optional stdenv.isDarwin Security);
+  buildInputs = (lib.optional stdenv.hostPlatform.isDarwin Security);
 
   preCheck = ''
     export DIFFR_TESTS_BINARY_PATH=$releaseDir/diffr
diff --git a/pkgs/tools/text/discount/default.nix b/pkgs/tools/text/discount/default.nix
index e71b5941ea93..d2219955d3dc 100644
--- a/pkgs/tools/text/discount/default.nix
+++ b/pkgs/tools/text/discount/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
 
-  postFixup = lib.optionalString stdenv.isDarwin ''
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -id "$out/lib/libmarkdown.dylib" "$out/lib/libmarkdown.dylib"
     for exe in $out/bin/*; do
       install_name_tool -change libmarkdown.dylib "$out/lib/libmarkdown.dylib" "$exe"
diff --git a/pkgs/tools/text/fastmod/default.nix b/pkgs/tools/text/fastmod/default.nix
index e7b2f3b107c9..f8cc3055e905 100644
--- a/pkgs/tools/text/fastmod/default.nix
+++ b/pkgs/tools/text/fastmod/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-sFrABp4oYhel+GONFsTbunq+4We2DicvF9A3FT/ZArc=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv Security ];
 
   meta = with lib; {
     description = "Utility that makes sweeping changes to large, shared code bases";
diff --git a/pkgs/tools/text/fst/default.nix b/pkgs/tools/text/fst/default.nix
index 1f1b2950e160..c43a781cf6e1 100644
--- a/pkgs/tools/text/fst/default.nix
+++ b/pkgs/tools/text/fst/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-yTbEaw+BbjVks3j7/b75kGoUjVftLaVYvYIdI/bbfdk=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   doInstallCheck = true;
   installCheckPhase = ''
diff --git a/pkgs/tools/text/gawk/default.nix b/pkgs/tools/text/gawk/default.nix
index 941e102cb3b0..103f9e16eb66 100644
--- a/pkgs/tools/text/gawk/default.nix
+++ b/pkgs/tools/text/gawk/default.nix
@@ -7,16 +7,16 @@
 , autoreconfHook # no-pma fix
 
 /* Test suite broke on:
-       stdenv.isCygwin # XXX: `test-dup2' segfaults on Cygwin 6.1
-    || stdenv.isDarwin # XXX: `locale' segfaults
-    || stdenv.isSunOS  # XXX: `_backsmalls1' fails, locale stuff?
-    || stdenv.isFreeBSD
+       stdenv.hostPlatform.isCygwin # XXX: `test-dup2' segfaults on Cygwin 6.1
+    || stdenv.hostPlatform.isDarwin # XXX: `locale' segfaults
+    || stdenv.hostPlatform.isSunOS  # XXX: `_backsmalls1' fails, locale stuff?
+    || stdenv.hostPlatform.isFreeBSD
 */
-, doCheck ? (interactive && stdenv.isLinux), glibcLocales ? null
+, doCheck ? (interactive && stdenv.hostPlatform.isLinux), glibcLocales ? null
 , locale ? null
 }:
 
-assert (doCheck && stdenv.isLinux) -> glibcLocales != null;
+assert (doCheck && stdenv.hostPlatform.isLinux) -> glibcLocales != null;
 
 stdenv.mkDerivation rec {
   pname = "gawk" + lib.optionalString interactive "-interactive";
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
     autoreconfHook
   ] ++ lib.optionals interactive [
     removeReferencesTo
-  ] ++ lib.optionals (doCheck && stdenv.isLinux) [
+  ] ++ lib.optionals (doCheck && stdenv.hostPlatform.isLinux) [
     glibcLocales
   ];
 
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
     readline
   ] ++ lib.optionals withSigsegv [
     libsigsegv
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     locale
   ];
 
diff --git a/pkgs/tools/text/gawk/gawkextlib.nix b/pkgs/tools/text/gawk/gawkextlib.nix
index 86bf2beaa91d..eaf7799a4860 100644
--- a/pkgs/tools/text/gawk/gawkextlib.nix
+++ b/pkgs/tools/text/gawk/gawkextlib.nix
@@ -109,14 +109,14 @@ let
       #! No such device
       #  mdb_env_open(env, /dev/null)
       #! Operation not supported by device
-      doCheck = !stdenv.isDarwin;
+      doCheck = !stdenv.hostPlatform.isDarwin;
     };
     mbs = buildExtension {
       inherit gawkextlib;
       name = "mbs";
       extraBuildInputs = [ glibcLocales ];
       #! "spät": length: 5, mbs_length: 6, wcswidth: 4
-      doCheck = !stdenv.isDarwin;
+      doCheck = !stdenv.hostPlatform.isDarwin;
     };
     mpfr = buildExtension {
       inherit gawkextlib;
diff --git a/pkgs/tools/text/glogg/default.nix b/pkgs/tools/text/glogg/default.nix
index 7a6562aab143..04aac6b0b871 100644
--- a/pkgs/tools/text/glogg/default.nix
+++ b/pkgs/tools/text/glogg/default.nix
@@ -11,7 +11,7 @@ mkDerivation rec {
     sha256 = "0hf1c2m8n88frmxmyn0ndr8129p7iky49nq565sw1asaydm5z6pb";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace glogg.pro \
       --replace "boost_program_options-mt" "boost_program_options"
   '';
@@ -21,7 +21,7 @@ mkDerivation rec {
 
   qmakeFlags = [ "VERSION=${version}" ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p $out/Applications
     mv $out/bin/glogg.app $out/Applications/glogg.app
     rm -fr $out/{bin,share}
diff --git a/pkgs/tools/text/gnugrep/default.nix b/pkgs/tools/text/gnugrep/default.nix
index 40bd33758b54..bbb876703f2b 100644
--- a/pkgs/tools/text/gnugrep/default.nix
+++ b/pkgs/tools/text/gnugrep/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation {
   # cygwin: FAIL: multibyte-white-space
   # freebsd: FAIL mb-non-UTF8-performance
   # x86_64-darwin: fails 'stack-overflow' tests on Rosetta 2 emulator
-  doCheck = !stdenv.isCygwin && !stdenv.isFreeBSD && !(stdenv.isDarwin && stdenv.hostPlatform.isx86_64) && !stdenv.buildPlatform.isRiscV64;
+  doCheck = !stdenv.hostPlatform.isCygwin && !stdenv.hostPlatform.isFreeBSD && !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) && !stdenv.buildPlatform.isRiscV64;
 
   # On macOS, force use of mkdir -p, since Grep's fallback
   # (./install-sh) is broken.
diff --git a/pkgs/tools/text/highlight/default.nix b/pkgs/tools/text/highlight/default.nix
index a2f91efc9494..868de0fb679e 100644
--- a/pkgs/tools/text/highlight/default.nix
+++ b/pkgs/tools/text/highlight/default.nix
@@ -15,7 +15,7 @@ let
     enableParallelBuilding = true;
 
     nativeBuildInputs = [ pkg-config swig perl ]
-      ++ lib.optional stdenv.isDarwin gcc;
+      ++ lib.optional stdenv.hostPlatform.isDarwin gcc;
 
     buildInputs = [ getopt lua boost libxcrypt ];
 
@@ -35,15 +35,15 @@ let
 
     # This has to happen _before_ the main build because it does a
     # `make clean' for some reason.
-    preBuild = lib.optionalString (!stdenv.isDarwin) ''
+    preBuild = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       make -C extras/swig $makeFlags perl
     '';
 
-    postCheck = lib.optionalString (!stdenv.isDarwin) ''
+    postCheck = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       perl -Iextras/swig extras/swig/testmod.pl
     '';
 
-    preInstall = lib.optionalString (!stdenv.isDarwin) ''
+    preInstall = lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       mkdir -p $out/${perl.libPrefix}
       install -m644 extras/swig/highlight.{so,pm} $out/${perl.libPrefix}
       make -C extras/swig clean # Clean up intermediate files.
@@ -59,5 +59,5 @@ let
   };
 
 in
-  if stdenv.isDarwin then self
+  if stdenv.hostPlatform.isDarwin then self
   else perl.pkgs.toPerlModule self
diff --git a/pkgs/tools/text/html2text/default.nix b/pkgs/tools/text/html2text/default.nix
index 247ee8e814df..afa4bb114037 100644
--- a/pkgs/tools/text/html2text/default.nix
+++ b/pkgs/tools/text/html2text/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
 
-  buildInputs = lib.optional stdenv.isDarwin libiconv;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   meta = {
     description = "Convert HTML to plain text";
diff --git a/pkgs/tools/text/hyx/default.nix b/pkgs/tools/text/hyx/default.nix
index 3cbcac20966a..e41f9bbfceb2 100644
--- a/pkgs/tools/text/hyx/default.nix
+++ b/pkgs/tools/text/hyx/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-dufx3zsabeet7Rp0d60MIuNqisIQd6UgE7WDZYNHl3E=";
   };
 
-  postPatch = lib.optionalString stdenv.isDarwin ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
     substituteInPlace Makefile \
       --replace "-Wl,-z,relro,-z,now -fpic -pie" ""
   '';
diff --git a/pkgs/tools/text/igrep/default.nix b/pkgs/tools/text/igrep/default.nix
index e2751197c717..a4c4a134c4b6 100644
--- a/pkgs/tools/text/igrep/default.nix
+++ b/pkgs/tools/text/igrep/default.nix
@@ -20,7 +20,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-raSz/+u7P04qHmvdfYoWKOKtNtaFlgmT8Nw0ImhCMkU=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   passthru.tests = {
     version = testers.testVersion { package = igrep; command = "ig --version"; };
diff --git a/pkgs/tools/text/ispell/default.nix b/pkgs/tools/text/ispell/default.nix
index 3dea94d0912b..844f35612ff4 100644
--- a/pkgs/tools/text/ispell/default.nix
+++ b/pkgs/tools/text/ispell/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     cat >> local.h <<EOF
-    ${lib.optionalString (!stdenv.isDarwin) "#define USG"}
+    ${lib.optionalString (!stdenv.hostPlatform.isDarwin) "#define USG"}
     #define TERMLIB "-lncurses"
     #define LANGUAGES "{american,MASTERDICTS=american.med,HASHFILES=americanmed.hash}"
     #define MASTERHASH "americanmed.hash"
diff --git a/pkgs/tools/text/jen/default.nix b/pkgs/tools/text/jen/default.nix
index cfd8298c3725..a29b2e905803 100644
--- a/pkgs/tools/text/jen/default.nix
+++ b/pkgs/tools/text/jen/default.nix
@@ -16,7 +16,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-LKiPG7k5UgaESP1ShsIWNMnm9resbRje746txOBo+Qs=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/text/jumanpp/default.nix b/pkgs/tools/text/jumanpp/default.nix
index 382b2f319c14..5dff6f6f48af 100644
--- a/pkgs/tools/text/jumanpp/default.nix
+++ b/pkgs/tools/text/jumanpp/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ protobuf ]
-    ++ lib.optional stdenv.isDarwin libiconv;
+    ++ lib.optional stdenv.hostPlatform.isDarwin libiconv;
 
   meta = with lib; {
     description = "Japanese morphological analyser using a recurrent neural network language model (RNNLM)";
diff --git a/pkgs/tools/text/kakasi/default.nix b/pkgs/tools/text/kakasi/default.nix
index fa509f1b4a72..9e0cc95bff4f 100644
--- a/pkgs/tools/text/kakasi/default.nix
+++ b/pkgs/tools/text/kakasi/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation rec {
   pname = "kakasi";
   version = "2.3.6";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   meta = with lib; {
     description = "Kanji Kana Simple Inverter";
diff --git a/pkgs/tools/text/kdiff3/default.nix b/pkgs/tools/text/kdiff3/default.nix
index f322a6f7d7c3..0b1e13a424e8 100644
--- a/pkgs/tools/text/kdiff3/default.nix
+++ b/pkgs/tools/text/kdiff3/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   cmakeFlags = [ "-Wno-dev" ];
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     ln -s "$out/Applications/KDE/kdiff3.app/Contents/MacOS" "$out/bin"
   '';
 
diff --git a/pkgs/tools/text/languagetool-rust/default.nix b/pkgs/tools/text/languagetool-rust/default.nix
index 1772f9d1e305..15b0ccb46611 100644
--- a/pkgs/tools/text/languagetool-rust/default.nix
+++ b/pkgs/tools/text/languagetool-rust/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
   buildFeatures = [ "full" ];
 
   nativeBuildInputs = [ installShellFiles pkg-config ];
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   checkFlags = [
     # requires network access
diff --git a/pkgs/tools/text/mdbook-admonish/default.nix b/pkgs/tools/text/mdbook-admonish/default.nix
index 1a781053811f..da29d25dcb33 100644
--- a/pkgs/tools/text/mdbook-admonish/default.nix
+++ b/pkgs/tools/text/mdbook-admonish/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-CG4WvAFDqtRUjF4kJ29363F6jWRChIXgT5i6ozwV4pw=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   meta = with lib; {
     description = "Preprocessor for mdbook to add Material Design admonishments";
diff --git a/pkgs/tools/text/mdbook-emojicodes/default.nix b/pkgs/tools/text/mdbook-emojicodes/default.nix
index d57ba39b803c..fbdd19fb72b0 100644
--- a/pkgs/tools/text/mdbook-emojicodes/default.nix
+++ b/pkgs/tools/text/mdbook-emojicodes/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-SkvAtV613+ARk79dB2zRKoLjPgdzoEKQa3JrRw9qBkA=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
   ];
 
diff --git a/pkgs/tools/text/mdbook-epub/default.nix b/pkgs/tools/text/mdbook-epub/default.nix
index 48dbe92ca6ce..d9418f67b145 100644
--- a/pkgs/tools/text/mdbook-epub/default.nix
+++ b/pkgs/tools/text/mdbook-epub/default.nix
@@ -28,7 +28,7 @@ in rustPlatform.buildRustPackage {
 
   buildInputs = [
     bzip2
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
   ];
 
diff --git a/pkgs/tools/text/mdbook-footnote/default.nix b/pkgs/tools/text/mdbook-footnote/default.nix
index 1b3ad02e5c7f..791cb07d02be 100644
--- a/pkgs/tools/text/mdbook-footnote/default.nix
+++ b/pkgs/tools/text/mdbook-footnote/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-Ig+uVCO5oHIkkvFsKiBiUFzjUgH/Pydn4MVJHb2wKGc=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   meta = with lib; {
     description = "Preprocessor for mdbook to support the inclusion of automatically numbered footnotes";
diff --git a/pkgs/tools/text/mdbook-graphviz/default.nix b/pkgs/tools/text/mdbook-graphviz/default.nix
index 19719ac504d7..9328cba50f6c 100644
--- a/pkgs/tools/text/mdbook-graphviz/default.nix
+++ b/pkgs/tools/text/mdbook-graphviz/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-cMCNZ8Ezp7bFx4EnuZCXhqoaE0yN3iK9KnCYBYGPHKc=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   nativeCheckInputs = [ graphviz ];
 
diff --git a/pkgs/tools/text/mdbook-katex/default.nix b/pkgs/tools/text/mdbook-katex/default.nix
index b6c2a1ec1d30..0c2c53825b7e 100644
--- a/pkgs/tools/text/mdbook-katex/default.nix
+++ b/pkgs/tools/text/mdbook-katex/default.nix
@@ -11,7 +11,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-U8uDcNkEyz7zAqCTthY5SVGshsJRKRaoBLOpBpQ9sho=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   meta = with lib; {
     description = "Preprocessor for mdbook, rendering LaTeX equations to HTML at build time";
diff --git a/pkgs/tools/text/mdbook-kroki-preprocessor/default.nix b/pkgs/tools/text/mdbook-kroki-preprocessor/default.nix
index e69c8185e3c3..8404f414a4aa 100644
--- a/pkgs/tools/text/mdbook-kroki-preprocessor/default.nix
+++ b/pkgs/tools/text/mdbook-kroki-preprocessor/default.nix
@@ -26,7 +26,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.Security
   ];
diff --git a/pkgs/tools/text/mdbook-linkcheck/default.nix b/pkgs/tools/text/mdbook-linkcheck/default.nix
index 7129cdd0442c..7ff872a9d0de 100644
--- a/pkgs/tools/text/mdbook-linkcheck/default.nix
+++ b/pkgs/tools/text/mdbook-linkcheck/default.nix
@@ -14,9 +14,9 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-AwixlCL5ZcLgj9wYeBvkSy2U6J8alXf488l8DMn73w4=";
 
-  buildInputs = if stdenv.isDarwin then [ Security ] else [ openssl ];
+  buildInputs = if stdenv.hostPlatform.isDarwin then [ Security ] else [ openssl ];
 
-  nativeBuildInputs = lib.optionals (!stdenv.isDarwin) [ pkg-config ];
+  nativeBuildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ pkg-config ];
 
   OPENSSL_NO_VENDOR = 1;
 
diff --git a/pkgs/tools/text/mdbook-mermaid/default.nix b/pkgs/tools/text/mdbook-mermaid/default.nix
index 0f2137a3976a..b4e837a2082a 100644
--- a/pkgs/tools/text/mdbook-mermaid/default.nix
+++ b/pkgs/tools/text/mdbook-mermaid/default.nix
@@ -18,7 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-BnbllOsidqDEfKs0pd6AzFjzo51PKm9uFSwmOGTW3ug=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
   ];
 
diff --git a/pkgs/tools/text/mdbook-pdf/default.nix b/pkgs/tools/text/mdbook-pdf/default.nix
index 8bed07bd33b8..ab889398ceff 100644
--- a/pkgs/tools/text/mdbook-pdf/default.nix
+++ b/pkgs/tools/text/mdbook-pdf/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     openssl
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     CoreServices
   ];
 
diff --git a/pkgs/tools/text/mdbook-plantuml/default.nix b/pkgs/tools/text/mdbook-plantuml/default.nix
index e5ee827d816e..e3665aa2f43f 100644
--- a/pkgs/tools/text/mdbook-plantuml/default.nix
+++ b/pkgs/tools/text/mdbook-plantuml/default.nix
@@ -33,7 +33,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ CoreServices ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   meta = with lib; {
     description = "mdBook preprocessor to render PlantUML diagrams to png images in the book output directory";
diff --git a/pkgs/tools/text/mdbook-toc/default.nix b/pkgs/tools/text/mdbook-toc/default.nix
index a9c3855964b5..2555e03c124c 100644
--- a/pkgs/tools/text/mdbook-toc/default.nix
+++ b/pkgs/tools/text/mdbook-toc/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-95W0gERjwL9r0+DOgxQu+sjSFSThWeShLAqlDQiGxFw=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
   meta = with lib; {
     description = "Preprocessor for mdbook to add inline Table of Contents support";
diff --git a/pkgs/tools/text/mdcat/default.nix b/pkgs/tools/text/mdcat/default.nix
index d4d295e0057a..d21a9db65683 100644
--- a/pkgs/tools/text/mdcat/default.nix
+++ b/pkgs/tools/text/mdcat/default.nix
@@ -24,7 +24,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config asciidoctor installShellFiles ];
   buildInputs = [ openssl ]
-    ++ lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Security SystemConfiguration ];
 
   cargoHash = "sha256-KEJOpQ9Y832M0IUrm6u7SYWTH8/blDfu0kubS2GMuRE=";
 
diff --git a/pkgs/tools/text/pinyin-tool/default.nix b/pkgs/tools/text/pinyin-tool/default.nix
index b2427e4f5f4b..e287c2a5cc79 100644
--- a/pkgs/tools/text/pinyin-tool/default.nix
+++ b/pkgs/tools/text/pinyin-tool/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-jeRKtKv8Lg/ritl42dMbEQpXaNlCIaHTrw0xtPQitMc=";
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   meta = with lib; {
     description = "Simple command line tool for converting Chinese characters to space-separate pinyin words";
diff --git a/pkgs/tools/text/poedit/default.nix b/pkgs/tools/text/poedit/default.nix
index 6133bc409ddc..101a08422c18 100644
--- a/pkgs/tools/text/poedit/default.nix
+++ b/pkgs/tools/text/poedit/default.nix
@@ -47,6 +47,6 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     maintainers = with maintainers; [ dasj19 ];
     # configure: error: GTK+ build of wxWidgets is required
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/text/rare-regex/default.nix b/pkgs/tools/text/rare-regex/default.nix
index b565ed8aded2..1c9bece2ffee 100644
--- a/pkgs/tools/text/rare-regex/default.nix
+++ b/pkgs/tools/text/rare-regex/default.nix
@@ -2,7 +2,7 @@
 , stdenv
 , buildGoModule
 , fetchFromGitHub
-, withPcre2 ? stdenv.isLinux
+, withPcre2 ? stdenv.hostPlatform.isLinux
 , pcre2
 , testers
 , rare-regex
diff --git a/pkgs/tools/text/ripgrep-all/default.nix b/pkgs/tools/text/ripgrep-all/default.nix
index daed3da28e74..d65c399d5ce8 100644
--- a/pkgs/tools/text/ripgrep-all/default.nix
+++ b/pkgs/tools/text/ripgrep-all/default.nix
@@ -40,7 +40,7 @@ in rustPlatform.buildRustPackage rec {
   };
 
   nativeBuildInputs = [ makeWrapper poppler_utils ];
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   nativeCheckInputs = path;
 
diff --git a/pkgs/tools/text/ripgrep/default.nix b/pkgs/tools/text/ripgrep/default.nix
index a89cd2ae3904..e3270f359f1b 100644
--- a/pkgs/tools/text/ripgrep/default.nix
+++ b/pkgs/tools/text/ripgrep/default.nix
@@ -28,7 +28,7 @@ in rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ installShellFiles ]
     ++ lib.optional withPCRE2 pkg-config;
   buildInputs = lib.optional withPCRE2 pcre2
-    ++ lib.optional stdenv.isDarwin Security;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   buildFeatures = lib.optional withPCRE2 "pcre2";
 
diff --git a/pkgs/tools/text/rosie/default.nix b/pkgs/tools/text/rosie/default.nix
index 0a87425a16a7..5cad6650d2ce 100644
--- a/pkgs/tools/text/rosie/default.nix
+++ b/pkgs/tools/text/rosie/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     sed -iE '/ld.so.conf.d/d' Makefile
   '';
 
-  preInstall = lib.optionalString stdenv.isDarwin ''
+  preInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     install_name_tool -add_rpath $out/lib build/bin/rosie
     install_name_tool -id $out/lib/librosie.dylib build/lib/librosie.dylib
   '';
diff --git a/pkgs/tools/text/runiq/default.nix b/pkgs/tools/text/runiq/default.nix
index 439dcb0715d6..bcc7952d74b0 100644
--- a/pkgs/tools/text/runiq/default.nix
+++ b/pkgs/tools/text/runiq/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
     ln -s ${./Cargo.lock} Cargo.lock
   '';
 
-  buildInputs = lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/text/ruplacer/default.nix b/pkgs/tools/text/ruplacer/default.nix
index 4453f7317db6..be4d46facc23 100644
--- a/pkgs/tools/text/ruplacer/default.nix
+++ b/pkgs/tools/text/ruplacer/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-EyLompGEin12q6SC1M1D0QsE42HVEq5O/E99qi54cGo=";
 
-  buildInputs = (lib.optional stdenv.isDarwin Security);
+  buildInputs = (lib.optional stdenv.hostPlatform.isDarwin Security);
 
   meta = with lib; {
     description = "Find and replace text in source files";
diff --git a/pkgs/tools/text/sd/default.nix b/pkgs/tools/text/sd/default.nix
index e5bde420000d..d1c7e36a6593 100644
--- a/pkgs/tools/text/sd/default.nix
+++ b/pkgs/tools/text/sd/default.nix
@@ -21,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ Security ];
 
   postInstall = ''
     installManPage gen/sd.1
diff --git a/pkgs/tools/text/sgml/opensp/default.nix b/pkgs/tools/text/sgml/opensp/default.nix
index a3915a2d664f..2dc71926f210 100644
--- a/pkgs/tools/text/sgml/opensp/default.nix
+++ b/pkgs/tools/text/sgml/opensp/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
     sed -i -e 's/name="idm.*"//g' $out/share/doc/OpenSP/releasenotes.html
     '';
 
-  preConfigure = lib.optionalString stdenv.isCygwin ''
+  preConfigure = lib.optionalString stdenv.hostPlatform.isCygwin ''
     autoreconf -fi
   '';
 
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
   # Clang 16 fails to build due to inappropriate definitions in the `config.h` generated by the
   # existing configure scripts. Regenerate them to make sure they detect its features correctly.
   ++ lib.optional stdenv.cc.isClang autoreconfHook
-  ++ lib.optionals stdenv.isCygwin [ autoconf automake libtool ];
+  ++ lib.optionals stdenv.hostPlatform.isCygwin [ autoconf automake libtool ];
 
   doCheck = false; # fails
 
diff --git a/pkgs/tools/text/silver-searcher/default.nix b/pkgs/tools/text/silver-searcher/default.nix
index 568b49371f69..c5e5986d6b98 100644
--- a/pkgs/tools/text/silver-searcher/default.nix
+++ b/pkgs/tools/text/silver-searcher/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   #     `print_mtx'; src/ignore.o:/build/source/src/log.h:12: first defined here
   # TODO: remove once next release has https://github.com/ggreer/the_silver_searcher/pull/1377
   env.NIX_CFLAGS_COMPILE = "-fcommon";
-  NIX_LDFLAGS = lib.optionalString stdenv.isLinux "-lgcc_s";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isLinux "-lgcc_s";
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ pcre zlib xz ];
diff --git a/pkgs/tools/text/tab/default.nix b/pkgs/tools/text/tab/default.nix
index 431b046471a4..f812bc9c6be4 100644
--- a/pkgs/tools/text/tab/default.nix
+++ b/pkgs/tools/text/tab/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   nativeCheckInputs = [ python3 ];
 
-  doCheck = !stdenv.isDarwin;
+  doCheck = !stdenv.hostPlatform.isDarwin;
 
   checkTarget = "test";
 
diff --git a/pkgs/tools/text/teip/default.nix b/pkgs/tools/text/teip/default.nix
index 90a41a8cf38d..ab140f2a578c 100644
--- a/pkgs/tools/text/teip/default.nix
+++ b/pkgs/tools/text/teip/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   # tests are locale sensitive
   preCheck = ''
-    export LANG=${if stdenv.isDarwin then "en_US.UTF-8" else "C.UTF-8"}
+    export LANG=${if stdenv.hostPlatform.isDarwin then "en_US.UTF-8" else "C.UTF-8"}
   '';
 
   postInstall = ''
diff --git a/pkgs/tools/text/termbook/default.nix b/pkgs/tools/text/termbook/default.nix
index 437016e25ec2..7172de5e41d7 100644
--- a/pkgs/tools/text/termbook/default.nix
+++ b/pkgs/tools/text/termbook/default.nix
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = [
     oniguruma
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.Security
   ];
 
diff --git a/pkgs/tools/text/xml/basex/default.nix b/pkgs/tools/text/xml/basex/default.nix
index e355e58d2ecc..a367c61d5bc8 100644
--- a/pkgs/tools/text/xml/basex/default.nix
+++ b/pkgs/tools/text/xml/basex/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ unzip copyDesktopItems ];
   buildInputs = [ jre ];
 
-  desktopItems = lib.optional (!stdenv.isDarwin) (makeDesktopItem {
+  desktopItems = lib.optional (!stdenv.hostPlatform.isDarwin) (makeDesktopItem {
     name = "basex";
     exec = "basexgui %f";
     icon = "${./basex.svg}"; # icon copied from Ubuntu basex package
diff --git a/pkgs/tools/text/xsv/default.nix b/pkgs/tools/text/xsv/default.nix
index b779a6c962ca..62b6a83d3f32 100644
--- a/pkgs/tools/text/xsv/default.nix
+++ b/pkgs/tools/text/xsv/default.nix
@@ -13,7 +13,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-y9f9eBMhSBx6L3cZyZ4VkNSB7yJ55khCskUp6t4HBq4=";
 
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin Security;
 
   meta = with lib; {
     description = "Fast CSV toolkit written in Rust";
diff --git a/pkgs/tools/typesetting/biber-ms/default.nix b/pkgs/tools/typesetting/biber-ms/default.nix
index 27821bbd8ada..38452d7f9638 100644
--- a/pkgs/tools/typesetting/biber-ms/default.nix
+++ b/pkgs/tools/typesetting/biber-ms/default.nix
@@ -33,7 +33,7 @@ perlPackages.buildPerlModule {
     TextCSV_XS TextRoman URI UnicodeLineBreak XMLLibXML XMLLibXMLSimple
     XMLLibXSLT XMLWriter autovivification
   ];
-  nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
 
   preConfigure = ''
     cp '${multiscriptBltxml}' t/tdata/multiscript.bltxml
@@ -41,7 +41,7 @@ perlPackages.buildPerlModule {
 
   postInstall = ''
     mv "$out"/bin/biber{,-ms}
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang "$out"/bin/biber-ms
   '';
 
diff --git a/pkgs/tools/typesetting/biber/default.nix b/pkgs/tools/typesetting/biber/default.nix
index f14096900ed9..1e5a4ec21666 100644
--- a/pkgs/tools/typesetting/biber/default.nix
+++ b/pkgs/tools/typesetting/biber/default.nix
@@ -20,9 +20,9 @@ perlPackages.buildPerlModule {
     TestDifferences
     PerlIOutf8_strict
   ];
-  nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+  nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
 
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     shortenPerlShebang $out/bin/biber
   '';
 
diff --git a/pkgs/tools/typesetting/htmldoc/default.nix b/pkgs/tools/typesetting/htmldoc/default.nix
index f47c9dac0f10..4dfb307689b4 100644
--- a/pkgs/tools/typesetting/htmldoc/default.nix
+++ b/pkgs/tools/typesetting/htmldoc/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ zlib cups libpng libjpeg ]
-    ++ lib.optionals stdenv.isDarwin [ Foundation SystemConfiguration ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ Foundation SystemConfiguration ];
 
   # do not generate universal binary on Darwin
   # because it is not supported by Nix's clang
diff --git a/pkgs/tools/typesetting/lowdown/default.nix b/pkgs/tools/typesetting/lowdown/default.nix
index bf9e06deca34..e898d7326964 100644
--- a/pkgs/tools/typesetting/lowdown/default.nix
+++ b/pkgs/tools/typesetting/lowdown/default.nix
@@ -52,9 +52,9 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ which dieHook ]
-    ++ lib.optionals stdenv.isDarwin [ fixDarwinDylibNames ];
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ fixDarwinDylibNames ];
 
-  preConfigure = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
+  preConfigure = lib.optionalString (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) ''
     echo 'HAVE_SANDBOX_INIT=0' > configure.local
   '';
 
@@ -85,13 +85,13 @@ stdenv.mkDerivation rec {
     in
 
     # Check that soVersion is up to date even if we are not on darwin
-    lib.optionalString (enableShared && !stdenv.isDarwin) ''
+    lib.optionalString (enableShared && !stdenv.hostPlatform.isDarwin) ''
       test -f $lib/lib/liblowdown.so.${soVersion} || \
         die "postInstall: expected $lib/lib/liblowdown.so.${soVersion} is missing"
     ''
     # Fix lib extension so that fixDarwinDylibNames detects it, see
     # <https://github.com/kristapsdz/lowdown/issues/87#issuecomment-1532243650>.
-    + lib.optionalString (enableShared && stdenv.isDarwin) ''
+    + lib.optionalString (enableShared && stdenv.hostPlatform.isDarwin) ''
       darwinDylib="$lib/lib/liblowdown.${soVersion}.dylib"
       mv "$lib/lib/liblowdown.so.${soVersion}" "$darwinDylib"
 
diff --git a/pkgs/tools/typesetting/sile/default.nix b/pkgs/tools/typesetting/sile/default.nix
index b6a77b55f685..49dbc74422e7 100644
--- a/pkgs/tools/typesetting/sile/default.nix
+++ b/pkgs/tools/typesetting/sile/default.nix
@@ -70,13 +70,13 @@ stdenv.mkDerivation (finalAttrs: {
     fontconfig
     libiconv
   ]
-  ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.AppKit
+  ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.AppKit
   ;
   passthru = {
     # So it will be easier to inspect this environment, in comparison to others
     inherit luaEnv;
     # Copied from Makefile.am
-    tests.test = lib.optionalAttrs (!(stdenv.isDarwin && stdenv.isAarch64)) (
+    tests.test = lib.optionalAttrs (!(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)) (
       runCommand "sile-test"
         {
           nativeBuildInputs = [ poppler_utils sile ];
@@ -90,11 +90,11 @@ stdenv.mkDerivation (finalAttrs: {
 
   postPatch = ''
     patchShebangs build-aux/*.sh
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i -e 's|@import AppKit;|#import <AppKit/AppKit.h>|' src/macfonts.m
   '';
 
-  NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-framework AppKit";
+  NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-framework AppKit";
 
   FONTCONFIG_FILE = makeFontsConf {
     fontDirectories = [
@@ -110,7 +110,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   # remove forbidden references to $TMPDIR
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     for f in "$out"/bin/*; do
       if isELF "$f"; then
         patchelf --shrink-rpath --allowed-rpath-prefixes "$NIX_STORE" "$f"
diff --git a/pkgs/tools/typesetting/tectonic/default.nix b/pkgs/tools/typesetting/tectonic/default.nix
index 0cc8b18de92a..815cc01f8be6 100644
--- a/pkgs/tools/typesetting/tectonic/default.nix
+++ b/pkgs/tools/typesetting/tectonic/default.nix
@@ -45,12 +45,12 @@ rustPlatform.buildRustPackage rec {
   buildFeatures = [ "external-harfbuzz" ];
 
   buildInputs = [ icu fontconfig harfbuzz openssl ]
-    ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ ApplicationServices Cocoa Foundation ]);
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ ApplicationServices Cocoa Foundation ]);
 
   postInstall = ''
     # Makes it possible to automatically use the V2 CLI API
     ln -s $out/bin/tectonic $out/bin/nextonic
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace dist/appimage/tectonic.desktop \
       --replace Exec=tectonic Exec=$out/bin/tectonic
     install -D dist/appimage/tectonic.desktop -t $out/share/applications/
diff --git a/pkgs/tools/typesetting/ted/default.nix b/pkgs/tools/typesetting/ted/default.nix
index 4cff637d7706..a6c46c6c7df5 100644
--- a/pkgs/tools/typesetting/ted/default.nix
+++ b/pkgs/tools/typesetting/ted/default.nix
@@ -78,7 +78,7 @@ stdenv.mkDerivation rec {
     homepage    = "https://nllgg.nl/Ted/";
     license     = licenses.gpl2Only;
     platforms   = platforms.all;
-    broken      = stdenv.isDarwin;
+    broken      = stdenv.hostPlatform.isDarwin;
     maintainers = with maintainers; [ obadz ];
   };
 }
diff --git a/pkgs/tools/typesetting/tex/blahtexml/default.nix b/pkgs/tools/typesetting/tex/blahtexml/default.nix
index 9d88ac3b0be6..8f4b1980d313 100644
--- a/pkgs/tools/typesetting/tex/blahtexml/default.nix
+++ b/pkgs/tools/typesetting/tex/blahtexml/default.nix
@@ -24,11 +24,11 @@ stdenv.mkDerivation rec {
   outputs = [ "out" "doc" ];
 
   nativeBuildInputs = [ texliveFull ]; # scheme-full needed for ucs package
-  buildInputs = [ xercesc ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = [ xercesc ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
 
   buildFlags =
     [ "doc" ] ++
-    (if stdenv.isDarwin
+    (if stdenv.hostPlatform.isDarwin
      then [ "blahtex-mac" "blahtexml-mac" ]
      else [ "blahtex-linux" "blahtexml-linux" ]);
 
diff --git a/pkgs/tools/typesetting/tex/tetex/default.nix b/pkgs/tools/typesetting/tex/tetex/default.nix
index 6000a13ec621..02471c863184 100644
--- a/pkgs/tools/typesetting/tex/tetex/default.nix
+++ b/pkgs/tools/typesetting/tex/tetex/default.nix
@@ -19,11 +19,11 @@ stdenv.mkDerivation rec {
   hardeningDisable = [ "format" ];
 
   # fixes "error: conflicting types for 'calloc'", etc.
-  preBuild = lib.optionalString stdenv.isDarwin ''
+  preBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
     sed -i 57d texk/kpathsea/c-std.h
   '';
 
-  preConfigure = if stdenv.isCygwin then ''
+  preConfigure = if stdenv.hostPlatform.isCygwin then ''
     find ./ -name "config.guess" -exec rm {} \; -exec ln -s ${automake}/share/automake-*/config.guess {} \;
   '' else null;
 
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
       "--without-oxdvik" "--without-texinfo" "--without-texi2html"
       "--with-system-zlib" "--with-system-pnglib" "--with-system-ncurses" ]
     # couldn't get gsftopk working on darwin
-    ++ lib.optional stdenv.isDarwin "--without-gsftopk";
+    ++ lib.optional stdenv.hostPlatform.isDarwin "--without-gsftopk";
 
   postUnpack = ''
     mkdir -p $out/share/texmf
diff --git a/pkgs/tools/typesetting/tex/texpresso/default.nix b/pkgs/tools/typesetting/tex/texpresso/default.nix
index 8653782da71c..73c111bd22b0 100644
--- a/pkgs/tools/typesetting/tex/texpresso/default.nix
+++ b/pkgs/tools/typesetting/tex/texpresso/default.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
 
   buildFlags = [ "texpresso" ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.hostPlatform.isDarwin [
     "-Wno-error=implicit-function-declaration"
   ]);
 
diff --git a/pkgs/tools/video/atomicparsley/default.nix b/pkgs/tools/video/atomicparsley/default.nix
index 3433bde6e11a..24c11d8695d6 100644
--- a/pkgs/tools/video/atomicparsley/default.nix
+++ b/pkgs/tools/video/atomicparsley/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
 
   buildInputs = [ zlib ]
-                ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+                ++ lib.optionals stdenv.hostPlatform.isDarwin [ Cocoa ];
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/tools/video/bento4/default.nix b/pkgs/tools/video/bento4/default.nix
index 12764ad92778..5059cfa0c838 100644
--- a/pkgs/tools/video/bento4/default.nix
+++ b/pkgs/tools/video/bento4/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [
     "-DBUILD_SHARED_LIBS=ON"
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "-DCMAKE_OSX_ARCHITECTURES="
   ];
 
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   '';
 
   # Patch binaries to use our dylib
-  postInstall = lib.optionalString stdenv.isDarwin ''
+  postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     find $out/bin -maxdepth 1 -executable -type f -exec install_name_tool -change @rpath/libap4.dylib $out/lib/libap4.dylib {} \;
   '';
 
diff --git a/pkgs/tools/video/rtmpdump/default.nix b/pkgs/tools/video/rtmpdump/default.nix
index acb59fd21bdb..8c5942d85210 100644
--- a/pkgs/tools/video/rtmpdump/default.nix
+++ b/pkgs/tools/video/rtmpdump/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation {
   ]
     ++ lib.optional gnutlsSupport "CRYPTO=GNUTLS"
     ++ lib.optional opensslSupport "CRYPTO=OPENSSL"
-    ++ lib.optional stdenv.isDarwin "SYS=darwin"
+    ++ lib.optional stdenv.hostPlatform.isDarwin "SYS=darwin"
     ++ lib.optional stdenv.cc.isClang "CC=clang";
 
   propagatedBuildInputs = [ zlib ]
diff --git a/pkgs/tools/video/swfmill/default.nix b/pkgs/tools/video/swfmill/default.nix
index 9e8fea8b53a6..e7e28c09a2d8 100644
--- a/pkgs/tools/video/swfmill/default.nix
+++ b/pkgs/tools/video/swfmill/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libxslt freetype libpng libxml2 ];
 
   # fatal error: 'libxml/xpath.h' file not found
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-I${libxml2.dev}/include/libxml2";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-I${libxml2.dev}/include/libxml2";
 
   meta = {
     description = "Xml2swf and swf2xml processor with import functionalities";
diff --git a/pkgs/tools/video/tsduck/default.nix b/pkgs/tools/video/tsduck/default.nix
index 2e91b2dc8575..0da53e2e96ea 100644
--- a/pkgs/tools/video/tsduck/default.nix
+++ b/pkgs/tools/video/tsduck/default.nix
@@ -88,6 +88,6 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ siriobalmelli ];
     platforms   = platforms.all;
     # never built on aarch64-darwin, x86_64-darwin since first introduction in nixpkgs
-    broken = stdenv.isDarwin;
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/tools/video/yaydl/default.nix b/pkgs/tools/video/yaydl/default.nix
index e54d37b15707..83463e22c481 100644
--- a/pkgs/tools/video/yaydl/default.nix
+++ b/pkgs/tools/video/yaydl/default.nix
@@ -28,7 +28,7 @@ rustPlatform.buildRustPackage rec {
   ];
 
   buildInputs = [ openssl ]
-    ++ lib.optional stdenv.isDarwin Security;
+    ++ lib.optional stdenv.hostPlatform.isDarwin Security;
 
   postInstall = ''
     wrapProgram $out/bin/yaydl \
diff --git a/pkgs/tools/virtualization/distrobuilder/default.nix b/pkgs/tools/virtualization/distrobuilder/default.nix
index 455e6f108c88..b2927b7c5000 100644
--- a/pkgs/tools/virtualization/distrobuilder/default.nix
+++ b/pkgs/tools/virtualization/distrobuilder/default.nix
@@ -23,7 +23,7 @@ let
     gnupg
     gnutar
     squashfsTools
-  ] ++ lib.optionals stdenv.isx86_64 [
+  ] ++ lib.optionals stdenv.hostPlatform.isx86_64 [
     # repack-windows deps
     cdrkit
     hivex
diff --git a/pkgs/tools/virtualization/ovftool/default.nix b/pkgs/tools/virtualization/ovftool/default.nix
index 46e1614385bf..6df3491c085d 100644
--- a/pkgs/tools/virtualization/ovftool/default.nix
+++ b/pkgs/tools/virtualization/ovftool/default.nix
@@ -65,15 +65,15 @@ stdenv.mkDerivation {
     libxcrypt-legacy
     xercesc
     zlib
-  ] ++ lib.optionals stdenv.isLinux [
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
     glibc
-  ] ++ lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.Libsystem
     libxml2
   ];
 
   nativeBuildInputs = [ unzip makeWrapper ]
-  ++ lib.optionals stdenv.isLinux [ autoPatchelfHook ];
+  ++ lib.optionals stdenv.hostPlatform.isLinux [ autoPatchelfHook ];
 
   postUnpack = ''
     # The linux package wraps ovftool.bin with ovftool. Wrapping
@@ -103,7 +103,7 @@ stdenv.mkDerivation {
     # Darwin dylibs are under `lib` in the zip.
     install -m 755 -d "$out/lib"
     install -m 644 -t "$out/lib" \
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       libcrypto.so.1.0.2 \
       libcurl.so.4 \
       libgoogleurl.so.59 \
@@ -112,7 +112,7 @@ stdenv.mkDerivation {
       libvim-types.so \
       libvmacore.so \
       libvmomi.so
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       lib/libcrypto.1.0.2.dylib \
       lib/libcurl.4.dylib \
       lib/libgoogleurl.59.0.30.45.2.dylib \
@@ -151,17 +151,17 @@ stdenv.mkDerivation {
     # Install final executable
     install -m 755 -d "$out/bin"
     makeWrapper "$out/libexec/ovftool" "$out/bin/ovftool" \
-  '' + lib.optionalString stdenv.isLinux ''
+  '' + lib.optionalString stdenv.hostPlatform.isLinux ''
       --prefix LD_LIBRARY_PATH : "$out/lib"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       --prefix DYLD_LIBRARY_PATH : "$out/lib"
   '' + ''
     runHook postInstall
   '';
 
-  preFixup = lib.optionalString stdenv.isLinux ''
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
     addAutoPatchelfSearchPath "$out/lib"
-  '' + lib.optionalString stdenv.isDarwin ''
+  '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
     change_args=()
 
     # Change relative @loader_path dylibs to absolute paths.
@@ -208,7 +208,7 @@ stdenv.mkDerivation {
   '';
 
   # These paths are need for install check tests
-  propagatedSandboxProfile = lib.optionalString stdenv.isDarwin ''
+  propagatedSandboxProfile = lib.optionalString stdenv.hostPlatform.isDarwin ''
     (allow file-read* (subpath "/usr/share/locale"))
     (allow file-read* (subpath "/var/db/timezone"))
     (allow file-read* (subpath "/System/Library/TextEncodings"))
@@ -216,7 +216,7 @@ stdenv.mkDerivation {
 
   doInstallCheck = true;
 
-  postInstallCheck = lib.optionalString stdenv.isDarwin ''
+  postInstallCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
     export HOME=$TMPDIR
     # Construct a dummy /etc/passwd file - ovftool attempts to determine the
     # user's "real" home using this
diff --git a/pkgs/tools/wayland/wob/default.nix b/pkgs/tools/wayland/wob/default.nix
index d57755244a10..e670c5fce4de 100644
--- a/pkgs/tools/wayland/wob/default.nix
+++ b/pkgs/tools/wayland/wob/default.nix
@@ -30,9 +30,9 @@ stdenv.mkDerivation rec {
   ];
   nativeBuildInputs = [ meson ninja pkg-config scdoc wayland-scanner ];
   buildInputs = [ cmocka inih wayland wayland-protocols ]
-    ++ lib.optional stdenv.isLinux libseccomp;
+    ++ lib.optional stdenv.hostPlatform.isLinux libseccomp;
 
-  mesonFlags = lib.optional stdenv.isLinux "-Dseccomp=enabled";
+  mesonFlags = lib.optional stdenv.hostPlatform.isLinux "-Dseccomp=enabled";
 
   meta = with lib; {
     inherit (src.meta) homepage;
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index e50af1a6a24a..3df3d70f44c7 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -494,7 +494,7 @@ mapAliases {
   francis = kdePackages.francis; # added 2024-07-13
   fritzprofiles = throw "fritzprofiles was removed from nixpkgs, because it was removed as dependency of home-assistant for which it was pacakged."; # added 2024-01-05
   frostwire = throw "frostwire was removed, as it was broken due to reproducibility issues, use `frostwire-bin` package instead."; # added 2024-05-17
-  fuse2fs = if stdenv.isLinux then e2fsprogs.fuse2fs else null; # Added 2022-03-27 preserve, reason: convenience, arch has a package named fuse2fs too.
+  fuse2fs = if stdenv.hostPlatform.isLinux then e2fsprogs.fuse2fs else null; # Added 2022-03-27 preserve, reason: convenience, arch has a package named fuse2fs too.
   futuresql = libsForQt5.futuresql; # added 2023-11-11
   fx_cast_bridge = fx-cast-bridge; # added 2023-07-26
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 09d644f76c64..7afe4acb5f0c 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -737,7 +737,7 @@ with pkgs;
   sea-orm-cli = callPackage ../development/tools/sea-orm-cli { };
 
   vcpkg-tool = callPackage ../by-name/vc/vcpkg-tool/package.nix {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
     fmt = fmt_10;
   };
 
@@ -1118,7 +1118,7 @@ with pkgs;
         # So turn gssSupport off there, and on Windows.
         # On other platforms, keep the previous value.
         gssSupport =
-          if stdenv.isDarwin || stdenv.hostPlatform.isWindows
+          if stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isWindows
             then false
             else old.gssSupport or true; # `? true` is the default
         libkrb5 = buildPackages.krb5.override {
@@ -2094,7 +2094,7 @@ with pkgs;
     guiSupport = true;
     sendEmailSupport = true;
     withSsh = true;
-    withLibsecret = !stdenv.isDarwin;
+    withLibsecret = !stdenv.hostPlatform.isDarwin;
   };
 
   # Git with SVN support, but without GUI.
@@ -2144,7 +2144,7 @@ with pkgs;
   delta = darwin.apple_sdk_11_0.callPackage ../applications/version-management/delta { };
 
   debase = callPackage ../by-name/de/debase/package.nix {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   diff-so-fancy = callPackage ../applications/version-management/diff-so-fancy { };
@@ -2313,7 +2313,7 @@ with pkgs;
   git-radar = callPackage ../applications/version-management/git-radar { };
 
   git-recent = callPackage ../applications/version-management/git-recent {
-    util-linux = if stdenv.isLinux then util-linuxMinimal else util-linux;
+    util-linux = if stdenv.hostPlatform.isLinux then util-linuxMinimal else util-linux;
   };
 
   git-relevant-history = callPackage ../applications/version-management/git-relevant-history { };
@@ -2547,7 +2547,7 @@ with pkgs;
 
   dosbox = callPackage ../applications/emulators/dosbox {
     inherit (darwin.apple_sdk.frameworks ) OpenGL;
-    SDL = if stdenv.isDarwin then SDL else SDL_compat;
+    SDL = if stdenv.hostPlatform.isDarwin then SDL else SDL_compat;
   };
 
   dosbox-x = darwin.apple_sdk_11_0.callPackage ../applications/emulators/dosbox-x {
@@ -2705,7 +2705,7 @@ with pkgs;
   ### APPLICATIONS/EMULATORS/DOLPHIN-EMU
 
   dolphin-emu = qt6Packages.callPackage ../applications/emulators/dolphin-emu {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
     inherit (darwin.apple_sdk_11_0.frameworks) CoreBluetooth ForceFeedback IOBluetooth IOKit OpenGL VideoToolbox;
     inherit (darwin) moltenvk;
   };
@@ -2843,7 +2843,7 @@ with pkgs;
   contour = qt6.callPackage ../applications/terminal-emulators/contour {
     inherit (darwin.apple_sdk_11_0.libs) utmp;
     inherit (darwin) sigtool;
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
     catch2 = catch2_3;
     fmt = fmt_9;
   };
@@ -2863,7 +2863,7 @@ with pkgs;
   iterm2 = callPackage ../applications/terminal-emulators/iterm2 { };
 
   kitty = darwin.apple_sdk_11_0.callPackage ../applications/terminal-emulators/kitty {
-    harfbuzz = harfbuzz.override { withCoreText = stdenv.isDarwin; };
+    harfbuzz = harfbuzz.override { withCoreText = stdenv.hostPlatform.isDarwin; };
     inherit (darwin.apple_sdk_11_0) Libsystem;
     inherit (darwin.apple_sdk_11_0.frameworks)
       Cocoa
@@ -5348,7 +5348,7 @@ with pkgs;
   joystickwake = callPackage ../tools/games/joystickwake { };
 
   juce = callPackage ../development/misc/juce {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 
   jumppad = callPackage ../tools/virtualization/jumppad { };
@@ -6279,7 +6279,7 @@ with pkgs;
   cdrkit = callPackage ../tools/cd-dvd/cdrkit { };
 
   cdrtools = callPackage ../tools/cd-dvd/cdrtools {
-    stdenv = if stdenv.isDarwin then llvmPackages_14.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then llvmPackages_14.stdenv else stdenv;
     inherit (darwin.apple_sdk.frameworks) Carbon IOKit;
   };
 
@@ -6681,7 +6681,7 @@ with pkgs;
   ckb-next = libsForQt5.callPackage ../tools/misc/ckb-next { };
 
   clamav = callPackage ../tools/security/clamav {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
     inherit (darwin.apple_sdk_11_0.frameworks) Foundation;
   };
 
@@ -7039,7 +7039,7 @@ with pkgs;
 
   dmd = callPackage ../by-name/dm/dmd/package.nix ({
     inherit (darwin.apple_sdk.frameworks) Foundation;
-  } // lib.optionalAttrs stdenv.isLinux {
+  } // lib.optionalAttrs stdenv.hostPlatform.isLinux {
     # https://github.com/NixOS/nixpkgs/pull/206907#issuecomment-1527034123
     stdenv = gcc11Stdenv;
   });
@@ -8062,12 +8062,12 @@ with pkgs;
   gnupg1 = gnupg1compat;    # use config.packageOverrides if you prefer original gnupg1
 
   gnupg22 = callPackage ../tools/security/gnupg/22.nix {
-    pinentry = if stdenv.isDarwin then pinentry_mac else pinentry-gtk2;
+    pinentry = if stdenv.hostPlatform.isDarwin then pinentry_mac else pinentry-gtk2;
     libgcrypt = libgcrypt_1_8;
   };
 
   gnupg24 = callPackage ../tools/security/gnupg/24.nix {
-    pinentry = if stdenv.isDarwin then pinentry_mac else pinentry-gtk2;
+    pinentry = if stdenv.hostPlatform.isDarwin then pinentry_mac else pinentry-gtk2;
   };
   gnupg = gnupg24;
 
@@ -8460,7 +8460,7 @@ with pkgs;
   haste-server = callPackage ../servers/haste-server { };
 
   hal-hardware-analyzer = libsForQt5.callPackage ../applications/science/electronics/hal-hardware-analyzer {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   half = callPackage ../development/libraries/half { };
@@ -8952,7 +8952,7 @@ with pkgs;
   go-jira = callPackage ../applications/misc/go-jira { };
 
   jogl = callPackage ../by-name/jo/jogl/package.nix {
-    stdenv = if stdenv.isDarwin && stdenv.isx86_64 then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64 then overrideSDK stdenv "11.0" else stdenv;
   };
 
   john = callPackage ../tools/security/john { };
@@ -9240,7 +9240,7 @@ with pkgs;
 
   libcryptui = callPackage ../development/libraries/libcryptui {
     autoreconfHook = buildPackages.autoreconfHook269;
-    gtk3 = if stdenv.isDarwin then gtk3-x11 else gtk3;
+    gtk3 = if stdenv.hostPlatform.isDarwin then gtk3-x11 else gtk3;
   };
 
   libshumate = callPackage ../development/libraries/libshumate { };
@@ -9552,7 +9552,7 @@ with pkgs;
     protobuf = protobuf_21;
   };
   netdataCloud = netdata.override {
-    withCloud = !stdenv.isDarwin;
+    withCloud = !stdenv.hostPlatform.isDarwin;
     withCloudUi = true;
   };
 
@@ -10013,7 +10013,7 @@ with pkgs;
   bubblemail = callPackage ../applications/networking/mailreaders/bubblemail { };
 
   mailpit = callPackage ../servers/mail/mailpit {
-    libtool = if stdenv.isDarwin then cctools else libtool;
+    libtool = if stdenv.hostPlatform.isDarwin then cctools else libtool;
   };
 
   mailsend = callPackage ../tools/networking/mailsend { };
@@ -11049,7 +11049,7 @@ with pkgs;
   page = callPackage ../tools/misc/page { };
 
   pageedit = libsForQt5.callPackage ../applications/office/PageEdit {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   pagefind = libsForQt5.callPackage ../applications/misc/pagefind { };
@@ -11328,7 +11328,7 @@ with pkgs;
   };
 
   platformioPackages = dontRecurseIntoAttrs (callPackage ../development/embedded/platformio { });
-  platformio = if stdenv.isLinux then platformioPackages.platformio-chrootenv else platformioPackages.platformio-core;
+  platformio = if stdenv.hostPlatform.isLinux then platformioPackages.platformio-chrootenv else platformioPackages.platformio-core;
   platformio-core = platformioPackages.platformio-core;
 
   platinum-searcher = callPackage ../tools/text/platinum-searcher { };
@@ -11505,7 +11505,7 @@ with pkgs;
 
   proxmark3 = libsForQt5.callPackage ../tools/security/proxmark3/default.nix {
     inherit (darwin.apple_sdk_11_0.frameworks) Foundation AppKit;
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   proxychains = callPackage ../tools/networking/proxychains { };
@@ -11710,7 +11710,7 @@ with pkgs;
   qovery-cli = callPackage ../tools/admin/qovery-cli { };
 
   qownnotes = qt6Packages.callPackage ../applications/office/qownnotes {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   qpdf = callPackage ../development/libraries/qpdf { };
@@ -11741,7 +11741,7 @@ with pkgs;
 
   raider = callPackage ../applications/misc/raider { };
 
-  quota = if stdenv.isLinux then linuxquota else unixtools.quota;
+  quota = if stdenv.hostPlatform.isLinux then linuxquota else unixtools.quota;
 
   qvge = libsForQt5.callPackage ../applications/graphics/qvge { };
 
@@ -12455,7 +12455,7 @@ with pkgs;
 
   snapcast = darwin.apple_sdk_11_0.callPackage ../applications/audio/snapcast {
     inherit (darwin.apple_sdk_11_0.frameworks) IOKit AudioToolbox;
-    pulseaudioSupport = config.pulseaudio or stdenv.isLinux;
+    pulseaudioSupport = config.pulseaudio or stdenv.hostPlatform.isLinux;
   };
 
   snapdragon-profiler = callPackage ../tools/graphics/snapdragon-profiler { };
@@ -12469,7 +12469,7 @@ with pkgs;
   snort = callPackage ../applications/networking/ids/snort { };
 
   soapui = callPackage ../applications/networking/soapui {
-    jdk = if stdenv.isDarwin
+    jdk = if stdenv.hostPlatform.isDarwin
       then (jdk11.override { enableJavaFX = true; })
       else jdk11;
   };
@@ -12911,7 +12911,7 @@ with pkgs;
   tewisay = callPackage ../tools/misc/tewisay { };
 
   texmacs = libsForQt5.callPackage ../applications/editors/texmacs {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
     extraFonts = true;
   };
 
@@ -13602,7 +13602,7 @@ with pkgs;
   wasm-tools = callPackage ../tools/misc/wasm-tools { };
 
   wasmedge = callPackage ../development/tools/wasmedge {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else llvmPackages.stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else llvmPackages.stdenv;
     inherit (darwin.apple_sdk_11_0.frameworks) Foundation;
   };
 
@@ -14569,7 +14569,7 @@ with pkgs;
   #Use this instead of stdenv to build with clang
   clangStdenv = if stdenv.cc.isClang then stdenv else lowPrio llvmPackages.stdenv;
   clang-sierraHack-stdenv = overrideCC stdenv buildPackages.clang-sierraHack;
-  libcxxStdenv = if stdenv.isDarwin then stdenv else lowPrio llvmPackages.libcxxStdenv;
+  libcxxStdenv = if stdenv.hostPlatform.isDarwin then stdenv else lowPrio llvmPackages.libcxxStdenv;
 
   clean = callPackage ../development/compilers/clean { };
 
@@ -14658,7 +14658,7 @@ with pkgs;
   apache-flex-sdk = callPackage ../development/compilers/apache-flex-sdk { };
 
   fasm = pkgsi686Linux.callPackage ../development/compilers/fasm {
-    inherit (stdenv) isx86_64;
+    inherit (stdenv.hostPlatform) isx86_64;
   };
   fasm-bin = callPackage ../development/compilers/fasm/bin.nix { };
 
@@ -14811,7 +14811,7 @@ with pkgs;
         reproducibleBuild = true;
         profiledCompiler = false;
 
-        isl = if !stdenv.isDarwin then isl_0_20 else null;
+        isl = if !stdenv.hostPlatform.isDarwin then isl_0_20 else null;
 
         withoutTargetLibc = true;
         langCC = false;
@@ -15725,7 +15725,7 @@ with pkgs;
   };
   cargo-codspeed = callPackage ../development/tools/rust/cargo-codspeed {
     rustPlatform = makeRustPlatform {
-      stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+      stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
       inherit rustc cargo;
     };
   };
@@ -17202,7 +17202,7 @@ with pkgs;
     inherit (darwin.apple_sdk_11_0.frameworks) CoreFoundation CoreServices Foundation;
     buildJdk = jdk11_headless;
     runJdk = jdk11_headless;
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv
       else if stdenv.cc.isClang then llvmPackages.stdenv
       else if stdenv.cc.isGNU then gcc12Stdenv
       else stdenv;
@@ -17214,7 +17214,7 @@ with pkgs;
     inherit (darwin.apple_sdk_11_0.frameworks) CoreFoundation CoreServices Foundation IOKit;
     buildJdk = jdk17_headless;
     runJdk = jdk17_headless;
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv
       else if stdenv.cc.isClang then llvmPackages.stdenv
       else stdenv;
     bazel_self = bazel_7;
@@ -17663,7 +17663,7 @@ with pkgs;
     wrapCC (distcc.links extraConfig)) { };
   distccStdenv = lowPrio (overrideCC stdenv buildPackages.distccWrapper);
 
-  distccMasquerade = if stdenv.isDarwin
+  distccMasquerade = if stdenv.hostPlatform.isDarwin
     then null
     else callPackage ../development/tools/misc/distcc/masq.nix {
       gccRaw = gcc.cc;
@@ -18221,7 +18221,7 @@ with pkgs;
   modd = callPackage ../development/tools/modd { };
 
   mold = callPackage ../by-name/mo/mold/package.nix {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
     tbb = tbb_2021_11;
   };
 
@@ -18722,7 +18722,7 @@ with pkgs;
   c2ffi = callPackage ../development/tools/misc/c2ffi { };
 
   c0 = callPackage ../development/compilers/c0 {
-    stdenv = if stdenv.isDarwin then gccStdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then gccStdenv else stdenv;
   };
 
   c3c = callPackage ../development/compilers/c3c { };
@@ -18981,25 +18981,25 @@ with pkgs;
 
   abseil-cpp_202103 = callPackage ../development/libraries/abseil-cpp/202103.nix {
     # If abseil-cpp doesn’t have a deployment target of 10.13+, arrow-cpp crashes in libgrpc.dylib.
-    stdenv = if stdenv.isDarwin && stdenv.isx86_64
+    stdenv = if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64
       then overrideSDK stdenv { darwinMinVersion = "10.13"; }
       else stdenv;
   };
   abseil-cpp_202301 = callPackage ../development/libraries/abseil-cpp/202301.nix {
     # If abseil-cpp doesn’t have a deployment target of 10.13+, arrow-cpp crashes in libgrpc.dylib.
-    stdenv = if stdenv.isDarwin && stdenv.isx86_64
+    stdenv = if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64
       then overrideSDK stdenv { darwinMinVersion = "10.13"; }
       else stdenv;
   };
   abseil-cpp_202401 = callPackage ../development/libraries/abseil-cpp/202401.nix {
     # If abseil-cpp doesn’t have a deployment target of 10.13+, arrow-cpp crashes in libgrpc.dylib.
-    stdenv = if stdenv.isDarwin && stdenv.isx86_64
+    stdenv = if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64
       then overrideSDK stdenv { darwinMinVersion = "10.13"; }
       else stdenv;
   };
   abseil-cpp_202407 = callPackage ../development/libraries/abseil-cpp/202407.nix {
      # If abseil-cpp doesn’t have a deployment target of 10.13+, arrow-cpp crashes in libgrpc.dylib.
-    stdenv = if stdenv.isDarwin && stdenv.isx86_64
+    stdenv = if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64
       then overrideSDK stdenv { darwinMinVersion = "10.13"; }
       else stdenv;
   };
@@ -19448,7 +19448,7 @@ with pkgs;
 
   ustream-ssl-mbedtls = callPackage ../development/libraries/ustream-ssl {
     ssl_implementation = mbedtls_2;
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 
   uri = callPackage ../development/libraries/uri { };
@@ -19581,7 +19581,7 @@ with pkgs;
 
   eccodes = callPackage ../development/libraries/eccodes {
     pythonPackages = python3Packages;
-    stdenv = if stdenv.isDarwin then gccStdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then gccStdenv else stdenv;
   };
 
   eclib = callPackage ../development/libraries/eclib { };
@@ -19930,7 +19930,7 @@ with pkgs;
   ghcid = haskellPackages.ghcid.bin;
 
   gr-framework = callPackage ../by-name/gr/gr-framework/package.nix {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   graphia = qt6Packages.callPackage ../applications/science/misc/graphia { };
@@ -20143,7 +20143,7 @@ with pkgs;
   grilo-plugins = callPackage ../development/libraries/grilo-plugins { };
 
   grpc = darwin.apple_sdk_11_0.callPackage ../development/libraries/grpc {
-    stdenv = if stdenv.isDarwin && stdenv.isx86_64
+    stdenv = if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64
       then overrideSDK darwin.apple_sdk_11_0.stdenv { darwinMinVersion = "10.13"; }
       else stdenv;
   };
@@ -20251,7 +20251,7 @@ with pkgs;
   };
 
   pango = callPackage ../development/libraries/pango {
-    harfbuzz = harfbuzz.override { withCoreText = stdenv.isDarwin; };
+    harfbuzz = harfbuzz.override { withCoreText = stdenv.hostPlatform.isDarwin; };
   };
 
   pangolin = callPackage ../development/libraries/pangolin {
@@ -20380,7 +20380,7 @@ with pkgs;
   };
 
   harfbuzzFull = harfbuzz.override {
-    withCoreText = stdenv.isDarwin;
+    withCoreText = stdenv.hostPlatform.isDarwin;
     withGraphite2 = true;
     withIcu = true;
   };
@@ -20489,7 +20489,7 @@ with pkgs;
   ilmbase = callPackage ../development/libraries/ilmbase { };
 
   imgui = callPackage ../development/libraries/imgui {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 
   imtui = callPackage ../development/libraries/imtui { };
@@ -20504,8 +20504,8 @@ with pkgs;
   imlib2Full = imlib2.override {
     # Compilation error on Darwin with librsvg. For more information see:
     # https://github.com/NixOS/nixpkgs/pull/166452#issuecomment-1090725613
-    svgSupport = !stdenv.isDarwin;
-    heifSupport = !stdenv.isDarwin;
+    svgSupport = !stdenv.hostPlatform.isDarwin;
+    heifSupport = !stdenv.hostPlatform.isDarwin;
     webpSupport = true;
     jxlSupport = true;
     psSupport = true;
@@ -20549,7 +20549,7 @@ with pkgs;
 
   ip2location-c = callPackage ../development/libraries/ip2location-c { };
 
-  irrlicht = if !stdenv.isDarwin then
+  irrlicht = if !stdenv.hostPlatform.isDarwin then
     callPackage ../development/libraries/irrlicht { }
   else callPackage ../development/libraries/irrlicht/mac.nix {
     inherit (darwin.apple_sdk.frameworks) Cocoa OpenGL IOKit;
@@ -20644,7 +20644,7 @@ with pkgs;
 
   libjodycode = callPackage ../development/libraries/libjodycode {
     # missing aligned_alloc()
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   libb64 = callPackage ../development/libraries/libb64 { };
@@ -20661,7 +20661,7 @@ with pkgs;
   };
 
   keybinder3 = callPackage ../development/libraries/keybinder3 {
-    gtk3 = if stdenv.isDarwin then gtk3-x11 else gtk3;
+    gtk3 = if stdenv.hostPlatform.isDarwin then gtk3-x11 else gtk3;
     automake = automake111x;
   };
 
@@ -21205,7 +21205,7 @@ with pkgs;
   libfabric = callPackage ../development/libraries/libfabric { };
 
   libfive = libsForQt5.callPackage ../development/libraries/libfive {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
     python = python3;
   };
 
@@ -21926,7 +21926,7 @@ with pkgs;
   };
 
   libunwind =
-    if stdenv.isDarwin then darwin.libunwind
+    if stdenv.hostPlatform.isDarwin then darwin.libunwind
     else if stdenv.hostPlatform.system == "riscv32-linux" then llvmPackages.libunwind
     else callPackage ../development/libraries/libunwind { };
 
@@ -22275,7 +22275,7 @@ with pkgs;
     else
       freeglut;
 
-  mesa = if stdenv.isDarwin
+  mesa = if stdenv.hostPlatform.isDarwin
     then darwin.apple_sdk_11_0.callPackage ../development/libraries/mesa/darwin.nix {
       inherit (darwin.apple_sdk_11_0.libs) Xplugin;
     }
@@ -22322,7 +22322,7 @@ with pkgs;
   minizip-ng = callPackage ../development/libraries/minizip-ng { };
 
   mkvtoolnix = qt6Packages.callPackage ../applications/video/mkvtoolnix {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   mkvtoolnix-cli = mkvtoolnix.override {
@@ -22724,7 +22724,7 @@ with pkgs;
   pcg_c = callPackage ../development/libraries/pcg-c { };
 
   pcl = libsForQt5.callPackage ../development/libraries/pcl {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
     inherit (darwin.apple_sdk_11_0.frameworks) Cocoa AGL OpenGL;
   };
 
@@ -22911,7 +22911,7 @@ with pkgs;
         darwin;
       inherit (__splicedPackages.gst_all_1) gstreamer gst-plugins-base;
       inherit config;
-      stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+      stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
     });
 
   libsForQt5 = (recurseIntoAttrs (import ./qt5-packages.nix {
@@ -22928,7 +22928,7 @@ with pkgs;
 
   qt6Packages = recurseIntoAttrs (import ./qt6-packages.nix {
     inherit lib __splicedPackages makeScopeWithSplicing' generateSplicesForMkScope pkgsHostTarget kdePackages;
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   });
 
   quark-engine = callPackage ../tools/security/quark-engine { };
@@ -23633,7 +23633,7 @@ with pkgs;
   ucommon = callPackage ../development/libraries/ucommon { };
 
   v8 = callPackage ../development/libraries/v8 {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 
   intel-vaapi-driver = callPackage ../development/libraries/intel-vaapi-driver { };
@@ -24458,7 +24458,7 @@ with pkgs;
 
   directx-shader-compiler = callPackage ../tools/graphics/directx-shader-compiler {
     # https://github.com/NixOS/nixpkgs/issues/216294
-    stdenv = if stdenv.cc.isGNU && stdenv.isi686 then gcc11Stdenv else stdenv;
+    stdenv = if stdenv.cc.isGNU && stdenv.hostPlatform.isi686 then gcc11Stdenv else stdenv;
   };
 
   dkimproxy = callPackage ../servers/mail/dkimproxy { };
@@ -25051,7 +25051,7 @@ with pkgs;
     sasl = cyrus_sasl;
     boost = boost178.override { enableShared = false; };
     inherit (darwin.apple_sdk.frameworks) CoreFoundation Security;
-    stdenv = if stdenv.isDarwin then
+    stdenv = if stdenv.hostPlatform.isDarwin then
       darwin.apple_sdk_11_0.stdenv.override (old: {
         hostPlatform = old.hostPlatform // { darwinMinVersion = "10.14"; };
         buildPlatform = old.buildPlatform // { darwinMinVersion = "10.14"; };
@@ -25159,7 +25159,7 @@ with pkgs;
     httpSupport = true;
     tpmSupport = true;
     tlsSupport = true;
-    msVarsTemplate = stdenv.isx86_64 || stdenv.isAarch64;
+    msVarsTemplate = stdenv.hostPlatform.isx86_64 || stdenv.hostPlatform.isAarch64;
   };
 
   ops = callPackage ../applications/virtualization/ops { };
@@ -25426,7 +25426,7 @@ with pkgs;
   check-wmiplus = callPackage ../servers/monitoring/plugins/wmiplus { };
 
   shishi = callPackage ../servers/shishi {
-      pam = if stdenv.isLinux then pam else null;
+      pam = if stdenv.hostPlatform.isLinux then pam else null;
       # see also openssl, which has/had this same trick
   };
 
@@ -25580,8 +25580,8 @@ with pkgs;
       inherit (darwin.apple_sdk.frameworks) ApplicationServices Carbon Cocoa;
       inherit (darwin.apple_sdk.libs) Xplugin;
       inherit (buildPackages.darwin) bootstrap_cmds;
-      udev = if stdenv.isLinux then udev else null;
-      libdrm = if stdenv.isLinux then libdrm else null;
+      udev = if stdenv.hostPlatform.isLinux then udev else null;
+      libdrm = if stdenv.hostPlatform.isLinux then libdrm else null;
     };
 
     generatedPackages = lib.callPackageWith __splicedPackages ../servers/x11/xorg/default.nix { };
@@ -25853,7 +25853,7 @@ with pkgs;
 
   libossp_uuid = callPackage ../development/libraries/libossp-uuid { };
 
-  libuuid = if stdenv.isLinux
+  libuuid = if stdenv.hostPlatform.isLinux
     then util-linuxMinimal
     else null;
 
@@ -25899,7 +25899,7 @@ with pkgs;
     util-linux = util-linuxMinimal;
   });
   fuse = fuse2;
-  fuse2 = lowPrio (if stdenv.isDarwin then macfuse-stubs else fusePackages.fuse_2);
+  fuse2 = lowPrio (if stdenv.hostPlatform.isDarwin then macfuse-stubs else fusePackages.fuse_2);
   fuse3 = fusePackages.fuse_3;
   fuse-common = hiPrio fusePackages.fuse_3.common;
 
@@ -26341,7 +26341,7 @@ with pkgs;
     inherit (darwin.apple_sdk_11_0.frameworks) IOKit CoreFoundation Foundation;
   });
 
-  nettools = if stdenv.isLinux
+  nettools = if stdenv.hostPlatform.isLinux
     then callPackage ../os-specific/linux/net-tools { }
     else unixtools.nettools;
 
@@ -26505,7 +26505,7 @@ with pkgs;
 
   pagemon = callPackage ../os-specific/linux/pagemon { };
 
-  pam = if stdenv.isLinux then linux-pam else openpam;
+  pam = if stdenv.hostPlatform.isLinux then linux-pam else openpam;
 
   # pam_bioapi ( see http://www.thinkwiki.org/wiki/How_to_enable_the_fingerprint_reader )
 
@@ -26579,7 +26579,7 @@ with pkgs;
 
   pps-tools = callPackage ../os-specific/linux/pps-tools { };
 
-  procps = if stdenv.isLinux
+  procps = if stdenv.hostPlatform.isLinux
     then callPackage ../os-specific/linux/procps-ng { }
     else unixtools.procps;
 
@@ -26669,7 +26669,7 @@ with pkgs;
   sdparm = callPackage ../os-specific/linux/sdparm { };
 
   sdrangel = libsForQt5.callPackage ../applications/radio/sdrangel {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 
   setools = callPackage ../os-specific/linux/setools { };
@@ -28228,7 +28228,7 @@ with pkgs;
   dcw-gmt = callPackage ../applications/gis/gmt/dcw.nix { };
 
   grass = callPackage ../applications/gis/grass {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 
   qgis-ltr = callPackage ../applications/gis/qgis/ltr.nix { };
@@ -28966,7 +28966,7 @@ with pkgs;
   darktable = callPackage ../by-name/da/darktable/package.nix {
     lua = lua5_4;
     pugixml = pugixml.override { shared = true; };
-    stdenv = if stdenv.isDarwin && stdenv.isx86_64 then overrideSDK llvmPackages_18.stdenv { darwinMinVersion = "10.14"; darwinSdkVersion = "11.0"; } else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64 then overrideSDK llvmPackages_18.stdenv { darwinMinVersion = "10.14"; darwinSdkVersion = "11.0"; } else stdenv;
   };
 
   das_watchdog = callPackage ../tools/system/das_watchdog { };
@@ -29327,7 +29327,7 @@ with pkgs;
 
   keepassxc = libsForQt5.callPackage ../applications/misc/keepassxc {
     inherit (darwin.apple_sdk_11_0.frameworks) LocalAuthentication;
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   keepass-diff = callPackage ../applications/misc/keepass-diff { };
@@ -29540,7 +29540,7 @@ with pkgs;
       inherit (darwin.apple_sdk.frameworks) CoreAudio;
       python = python311;
       volk = volk_2;
-    } // lib.optionalAttrs stdenv.isLinux {
+    } // lib.optionalAttrs stdenv.hostPlatform.isLinux {
       stdenv = pkgs.stdenvAdapters.useLibsFrom stdenv pkgs.gcc12Stdenv;
     });
   };
@@ -29658,7 +29658,7 @@ with pkgs;
 
   wireshark = qt6Packages.callPackage ../applications/networking/sniffers/wireshark {
     inherit (darwin.apple_sdk_11_0.frameworks) ApplicationServices SystemConfiguration;
-    libpcap = libpcap.override { withBluez = stdenv.isLinux; };
+    libpcap = libpcap.override { withBluez = stdenv.hostPlatform.isLinux; };
   };
   wireshark-qt = wireshark;
 
@@ -29667,7 +29667,7 @@ with pkgs;
   tshark = wireshark-cli;
   wireshark-cli = wireshark.override {
     withQt = false;
-    libpcap = libpcap.override { withBluez = stdenv.isLinux; };
+    libpcap = libpcap.override { withBluez = stdenv.hostPlatform.isLinux; };
   };
 
   sngrep = callPackage ../applications/networking/sniffers/sngrep { };
@@ -29837,7 +29837,7 @@ with pkgs;
         inherit (gst_all_1) gstreamer gst-plugins-base gst-plugins-good;
       };
       freerdp3 = callPackage ../applications/networking/remote/freerdp/3.nix {
-        stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+        stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
         inherit (darwin.apple_sdk.frameworks) AudioToolbox AVFoundation Carbon Cocoa CoreMedia;
       };
     })
@@ -29925,9 +29925,9 @@ with pkgs;
   lemonade = callPackage ../applications/misc/lemonade { };
 
   librespot = callPackage ../applications/audio/librespot {
-    withALSA = stdenv.isLinux;
-    withPulseAudio = config.pulseaudio or stdenv.isLinux;
-    withPortAudio = stdenv.isDarwin;
+    withALSA = stdenv.hostPlatform.isLinux;
+    withPulseAudio = config.pulseaudio or stdenv.hostPlatform.isLinux;
+    withPortAudio = stdenv.hostPlatform.isDarwin;
   };
 
   limesctl = callPackage ../applications/misc/limesctl { };
@@ -30359,7 +30359,7 @@ with pkgs;
   waylevel = callPackage ../tools/misc/waylevel { };
 
   i3 = callPackage ../applications/window-managers/i3 {
-    xcb-util-cursor = if stdenv.isDarwin then xcb-util-cursor-HEAD else xcb-util-cursor;
+    xcb-util-cursor = if stdenv.hostPlatform.isDarwin then xcb-util-cursor-HEAD else xcb-util-cursor;
   };
 
   i3-auto-layout = callPackage ../applications/window-managers/i3/auto-layout.nix { };
@@ -30763,7 +30763,7 @@ with pkgs;
   kondo = callPackage ../applications/misc/kondo { };
 
   kotatogram-desktop = kdePackages.callPackage ../applications/networking/instant-messengers/telegram/kotatogram-desktop {
-    stdenv = if stdenv.isDarwin
+    stdenv = if stdenv.hostPlatform.isDarwin
       then overrideSDK stdenv "11.0"
       else stdenv;
   };
@@ -30949,7 +30949,7 @@ with pkgs;
   ladspa-sdk = callPackage ../applications/audio/ladspa-sdk { };
 
   ladybird = callPackage ../applications/networking/browsers/ladybird {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
     inherit (darwin.apple_sdk_11_0.frameworks) AppKit Cocoa Foundation OpenGL;
   };
 
@@ -31535,7 +31535,7 @@ with pkgs;
   } // (config.mplayer or {}));
 
   mpv-unwrapped = darwin.apple_sdk_11_0.callPackage ../applications/video/mpv {
-    stdenv = if stdenv.isDarwin then swiftPackages.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then swiftPackages.stdenv else stdenv;
     inherit lua;
   };
 
@@ -31879,10 +31879,10 @@ with pkgs;
   ncspot = callPackage ../applications/audio/ncspot {
     inherit (darwin.apple_sdk.frameworks) Cocoa;
 
-    withALSA = stdenv.isLinux;
-    withPulseAudio = config.pulseaudio or stdenv.isLinux;
-    withPortAudio = stdenv.isDarwin;
-    withMPRIS = stdenv.isLinux;
+    withALSA = stdenv.hostPlatform.isLinux;
+    withPulseAudio = config.pulseaudio or stdenv.hostPlatform.isLinux;
+    withPortAudio = stdenv.hostPlatform.isDarwin;
+    withMPRIS = stdenv.hostPlatform.isLinux;
   };
 
   ncview = callPackage ../tools/X11/ncview { } ;
@@ -32189,7 +32189,7 @@ with pkgs;
   phantomsocks = callPackage ../tools/networking/phantomsocks { };
 
   photoqt = callPackage ../by-name/ph/photoqt/package.nix {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 
   photoflare = libsForQt5.callPackage ../applications/graphics/photoflare { };
@@ -32453,7 +32453,7 @@ with pkgs;
   quantomatic = callPackage ../applications/science/physics/quantomatic { };
 
   quassel = libsForQt5.callPackage ../applications/networking/irc/quassel {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   quasselClient = quassel.override {
@@ -32603,7 +32603,7 @@ with pkgs;
 
   ries = callPackage ../applications/science/math/ries { };
 
-  ripcord = if stdenv.isLinux then
+  ripcord = if stdenv.hostPlatform.isLinux then
     qt5.callPackage ../applications/networking/instant-messengers/ripcord { }
   else
     callPackage ../applications/networking/instant-messengers/ripcord/darwin.nix { };
@@ -32910,7 +32910,7 @@ with pkgs;
     # Build with clang even on Linux, because GCC uses absolutely obscene amounts of memory
     # on this particular code base (OOM with 32GB memory and --cores 16 on GCC, succeeds
     # with --cores 32 on clang).
-    stdenv = if stdenv.isDarwin then overrideSDK llvmPackages.stdenv "11.0" else llvmPackages.stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK llvmPackages.stdenv "11.0" else llvmPackages.stdenv;
   };
 
   super-slicer = darwin.apple_sdk_11_0.callPackage ../applications/misc/prusa-slicer/super-slicer.nix { };
@@ -33095,7 +33095,7 @@ with pkgs;
   };
 
   synergy = libsForQt5.callPackage ../applications/misc/synergy {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
     inherit (darwin.apple_sdk_11_0.frameworks) ApplicationServices Carbon Cocoa CoreServices ScreenSaver UserNotifications;
   };
 
@@ -33160,7 +33160,7 @@ with pkgs;
   taskopen = callPackage ../applications/misc/taskopen { };
 
   telegram-desktop = qt6Packages.callPackage ../applications/networking/instant-messengers/telegram/telegram-desktop {
-    stdenv = if stdenv.isDarwin
+    stdenv = if stdenv.hostPlatform.isDarwin
       then overrideSDK stdenv "11.0"
       else stdenv;
   };
@@ -33477,7 +33477,7 @@ with pkgs;
   ueberzug = with python3Packages; toPythonApplication ueberzug;
 
   ueberzugpp = callPackage ../by-name/ue/ueberzugpp/package.nix {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 
   uefi-run = callPackage ../tools/virtualization/uefi-run { };
@@ -33887,7 +33887,7 @@ with pkgs;
   };
 
   chatterino2 = callPackage ../applications/networking/instant-messengers/chatterino2 {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   weston = callPackage ../applications/window-managers/weston { };
@@ -34109,7 +34109,7 @@ with pkgs;
   };
 
   xpdf = libsForQt5.callPackage ../applications/misc/xpdf {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
   };
 
   xplugd = callPackage ../tools/X11/xplugd { };
@@ -34361,7 +34361,7 @@ with pkgs;
   balanceofsatoshis = callPackage ../tools/misc/balanceofsatoshis { };
 
   bitcoin  = libsForQt5.callPackage ../applications/blockchains/bitcoin {
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
     withGui = true;
     inherit (darwin) autoSignDarwinBinariesHook;
   };
@@ -34672,7 +34672,7 @@ with pkgs;
   keeperrl = callPackage ../games/keeperrl { };
 
   shipwright = callPackage ../games/shipwright {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
   };
 
   wipeout-rewrite = callPackage ../games/wipeout-rewrite {
@@ -34874,7 +34874,7 @@ with pkgs;
   bsdgames = callPackage ../games/bsdgames { };
 
   bugdom = callPackage ../games/bugdom {
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
     inherit (darwin.apple_sdk_11_0.frameworks) IOKit Foundation OpenGL;
   };
 
@@ -35326,7 +35326,7 @@ with pkgs;
 
   mudlet = libsForQt5.callPackage ../games/mudlet {
     lua = lua5_1;
-    stdenv = if stdenv.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;
     inherit (darwin.apple_sdk_11_0.frameworks) AppKit;
   };
 
@@ -36539,7 +36539,7 @@ with pkgs;
 
   or-tools = callPackage ../development/libraries/science/math/or-tools {
     inherit (darwin) DarwinTools;
-    stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
     python = python3;
     protobuf = protobuf_23;
     # or-tools builds with -std=c++20, so abseil-cpp must
@@ -38121,7 +38121,7 @@ with pkgs;
   pwntools = with python3Packages; toPythonApplication pwntools;
 
   putty = callPackage ../applications/networking/remote/putty {
-    gtk3 = if stdenv.isDarwin then gtk3-x11 else gtk3;
+    gtk3 = if stdenv.hostPlatform.isDarwin then gtk3-x11 else gtk3;
   };
 
   qMasterPassword = qt6Packages.callPackage ../applications/misc/qMasterPassword { };
@@ -38572,7 +38572,7 @@ with pkgs;
   winePackagesFor = wineBuild: lib.makeExtensible (self: with self; {
     callPackage = newScope self;
     stdenv =
-      if pkgs.stdenv.isDarwin then
+      if pkgs.stdenv.hostPlatform.isDarwin then
         # Match upstream, which builds with the latest SDK and a 10.7 deployment target.
         overrideSDK pkgs.stdenv {
           darwinMinVersion = "10.7";
diff --git a/pkgs/top-level/emscripten-packages.nix b/pkgs/top-level/emscripten-packages.nix
index f4d2fd06a90c..af4f2fa7f1cd 100644
--- a/pkgs/top-level/emscripten-packages.nix
+++ b/pkgs/top-level/emscripten-packages.nix
@@ -67,8 +67,8 @@ rec {
         set -x
         emcc -O2 -s EMULATE_FUNCTION_POINTER_CASTS=1 xmllint.o \
         ./.libs/''
-      + pkgs.lib.optionalString pkgs.stdenv.isDarwin "libxml2.dylib "
-      + pkgs.lib.optionalString (!pkgs.stdenv.isDarwin) "libxml2.a "
+      + pkgs.lib.optionalString pkgs.stdenv.hostPlatform.isDarwin "libxml2.dylib "
+      + pkgs.lib.optionalString (!pkgs.stdenv.hostPlatform.isDarwin) "libxml2.a "
       + '' `pkg-config zlib --cflags` `pkg-config zlib --libs` -o ./xmllint.test.js \
         --embed-file ./test/xmlid/id_err1.xml
 
@@ -175,7 +175,7 @@ rec {
         echo "================= /testing zlib using node ================="
       '';
 
-      postPatch = pkgs.lib.optionalString pkgs.stdenv.isDarwin ''
+      postPatch = pkgs.lib.optionalString pkgs.stdenv.hostPlatform.isDarwin ''
         substituteInPlace configure \
           --replace '/usr/bin/libtool' 'ar' \
           --replace 'AR="libtool"' 'AR="ar"' \
diff --git a/pkgs/top-level/java-packages.nix b/pkgs/top-level/java-packages.nix
index 82022f25613b..5b72824f1d7f 100644
--- a/pkgs/top-level/java-packages.nix
+++ b/pkgs/top-level/java-packages.nix
@@ -13,7 +13,7 @@ in {
 
   compiler = let
     mkOpenjdk = path-linux: path-darwin: args:
-      if stdenv.isLinux
+      if stdenv.hostPlatform.isLinux
       then mkOpenjdkLinuxOnly path-linux args
       else let
         openjdk = callPackage path-darwin {};
@@ -21,7 +21,7 @@ in {
 
     mkOpenjdkLinuxOnly = path-linux: args: let
       openjdk = callPackage path-linux (args);
-    in assert stdenv.isLinux; openjdk // {
+    in assert stdenv.hostPlatform.isLinux; openjdk // {
       headless = openjdk.override { headless = true; };
     };
 
@@ -71,13 +71,13 @@ in {
       };
 
     temurin-bin = recurseIntoAttrs (callPackage (
-      if stdenv.isLinux
+      if stdenv.hostPlatform.isLinux
       then ../development/compilers/temurin-bin/jdk-linux.nix
       else ../development/compilers/temurin-bin/jdk-darwin.nix
     ) {});
 
     semeru-bin = recurseIntoAttrs (callPackage (
-      if stdenv.isLinux
+      if stdenv.hostPlatform.isLinux
       then ../development/compilers/semeru-bin/jdk-linux.nix
       else ../development/compilers/semeru-bin/jdk-darwin.nix
     ) {});
diff --git a/pkgs/top-level/lua-packages.nix b/pkgs/top-level/lua-packages.nix
index 3eafa2fa782f..6f62f2dee8ec 100644
--- a/pkgs/top-level/lua-packages.nix
+++ b/pkgs/top-level/lua-packages.nix
@@ -76,8 +76,8 @@ rec {
     # The makefile tries to link to `-llua<luaversion>`
     LUA_LIBS = "-llua";
 
-    buildInputs = lib.optionals stdenv.isLinux [linux-pam]
-      ++ lib.optionals stdenv.isDarwin [openpam];
+    buildInputs = lib.optionals stdenv.hostPlatform.isLinux [linux-pam]
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [openpam];
 
     installPhase = ''
       runHook preInstall
@@ -163,7 +163,7 @@ rec {
     '';
 
     meta = with lib; {
-      broken = stdenv.isDarwin;
+      broken = stdenv.hostPlatform.isDarwin;
       description = "Lightweight UNIX I/O and POSIX binding for Lua";
       homepage = "https://www.gitano.org.uk/luxio/";
       license = licenses.mit;
diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 3baab5aeb196..56bfd093fdd4 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -100,9 +100,9 @@ with self; {
 
     outputs = [ "out" "man" ];
 
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
     propagatedBuildInputs = [ FileNext ];
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/ack
     '';
 
@@ -341,7 +341,7 @@ with self; {
     meta = {
       description = "Gumbo parser library";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.AlienLibGumbo.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.AlienLibGumbo.x86_64-darwin
     };
   };
 
@@ -680,7 +680,7 @@ with self; {
 
     # Fails because /etc/protocols is not available in sandbox and make
     # getprotobyname('tcp') in ApacheTest fail.
-    doCheck = !stdenv.isLinux;
+    doCheck = !stdenv.hostPlatform.isLinux;
 
     meta = {
       description = "Perl Authentication and Authorization via cookies";
@@ -868,8 +868,8 @@ with self; {
     };
     buildInputs = [ ModuleBuildTiny ];
     propagatedBuildInputs = [ CPAN02PackagesSearch CPANCommonIndex CPANDistnameInfo ClassTiny CommandRunner ExtUtilsInstall ExtUtilsInstallPaths FileCopyRecursive Filepushd HTTPTinyish MenloLegacy Modulecpmfile ModuleCPANfile ParsePMFile ParallelPipes locallib ];
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/cpm
     '';
     meta = {
@@ -905,8 +905,8 @@ with self; {
     };
     buildInputs = [ ObjectPad ];
     propagatedBuildInputs = [ AppPackager FileLoadLines FileHomeDir IOString ImageInfo PDFAPI2 StringInterpolateNamed TextLayout ]
-      ++ lib.optionals (!stdenv.isDarwin) [ Wx ];
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+      ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ Wx ];
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
 
     # Delete tests that fail when version env var is set, see
     # https://github.com/ChordPro/chordpro/issues/293
@@ -914,7 +914,7 @@ with self; {
       rm t/320_subst.t t/321_subst.t t/322_subst.t
     '';
 
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/chordpro
       rm $out/bin/wxchordpro # Wx not supported on darwin
     '';
@@ -1334,7 +1334,7 @@ with self; {
       url = "mirror://cpan/authors/id/Z/ZE/ZEFRAM/Authen-DecHpwd-2.007.tar.gz";
       hash = "sha256-9DqTuwK0H3Mn2S+eljtpUF9nNQpS6PUHlvmK/E+z8Xc=";
     };
-    perlPreHook = lib.optionalString stdenv.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
     propagatedBuildInputs = [ DataInteger DigestCRC ScalarString ];
     meta = {
       description = "DEC VMS password hashing";
@@ -1647,7 +1647,7 @@ with self; {
     '';
     buildInputs =[ ExtUtilsMakeMaker ];
     propagatedBuildInputs = [ pkgs.zbar PerlMagick ];
-    perlPreHook = lib.optionalString stdenv.isDarwin "export LD=$CC";
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isDarwin "export LD=$CC";
     meta = {
       description = "Perl interface to the ZBar Barcode Reader";
       homepage = "https://metacpan.org/pod/Barcode::ZBar";
@@ -2490,7 +2490,7 @@ with self; {
     };
     propagatedBuildInputs = [ perlldap CatalystPluginAuthentication ClassAccessor ];
     buildInputs = [ TestMockObject TestException NetLDAPServerTest ];
-    doCheck = !stdenv.isDarwin; # t/02-realms_api.t and t/50.auth.case.sensitivity.t
+    doCheck = !stdenv.hostPlatform.isDarwin; # t/02-realms_api.t and t/50.auth.case.sensitivity.t
     meta = {
       description = "Authenticate Users against LDAP Directories";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -3968,7 +3968,7 @@ with self; {
     # Mac OS error -4960 (coreFoundationUnknownErr): The unknown error at lib/Clipboard/MacPasteboard.pm line 3.
     # Mac-Pasteboard-0.009.readme: 'NOTE that Mac OS X appears to restrict pasteboard access to processes that are logged in interactively.
     #     Ssh sessions and cron jobs can not create the requisite pasteboard handles, giving coreFoundationUnknownErr (-4960)'
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
     meta = {
       description = "Copy and paste with any OS";
       homepage = "https://metacpan.org/release/Clipboard";
@@ -4197,7 +4197,7 @@ with self; {
       EOF
     '';
 
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
 
     meta = {
       description = "Low-Level Interface to zlib or zlib-ng compression library";
@@ -4762,9 +4762,9 @@ with self; {
       url = "mirror://cpan/authors/id/R/RJ/RJBS/CPAN-Mini-1.111017.tar.gz";
       hash = "sha256-8gQpO+JqyEGsyHBEoYjbD1kegIgTFseiiK7A7s4wYVU=";
     };
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
     propagatedBuildInputs = [ FileHomeDir LWPProtocolHttps ];
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/minicpan
     '';
 
@@ -5100,7 +5100,7 @@ with self; {
       hash = "sha256-PMcSbVhBEHI3qb4txcf7wWfPPEtM40Z4qESLhQdXAUw=";
     };
     propagatedBuildInputs = [ ClassMix ];
-    perlPreHook = lib.optionalString (stdenv.isi686 || stdenv.isDarwin) "export LD=$CC";
+    perlPreHook = lib.optionalString (stdenv.hostPlatform.isi686 || stdenv.hostPlatform.isDarwin) "export LD=$CC";
     meta = {
       description = "Eksblowfish block cipher";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -5129,9 +5129,9 @@ with self; {
       url = "mirror://cpan/authors/id/B/BA/BARTB/Crypt-HSXKPasswd-v3.6.tar.gz";
       hash = "sha256-lZ3MX58BG/ALha0i31ZrerK/XqHTYrDeD7WuKfvEWLM=";
     };
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
     propagatedBuildInputs = [ Clone DateTime FileHomeDir FileShare FileShareDir GetoptLong JSON ListMoreUtils MathRound Readonly TextUnidecode TypeTiny ];
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/hsxkpasswd
     '';
 
@@ -5356,7 +5356,7 @@ with self; {
       hash = "sha256-k+vfqu/P6atoPwEhyF8kR12Bl/C87EYBghnkERQ03eM=";
     };
     propagatedBuildInputs = [ DigestSHA1 ];
-    perlPreHook = lib.optionalString (stdenv.isi686 || stdenv.isDarwin) "export LD=$CC";
+    perlPreHook = lib.optionalString (stdenv.hostPlatform.isi686 || stdenv.hostPlatform.isDarwin) "export LD=$CC";
     meta = {
       description = "Emulate MySQL PASSWORD() function";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -5478,8 +5478,8 @@ with self; {
     buildInputs = [ TestException ];
     propagatedBuildInputs = [ AltCryptRSABigInt CryptCAST5_PP CryptDES_EDE3 CryptDSA CryptIDEA CryptRIPEMD160 CryptRijndael CryptTwofish FileHomeDir LWP ];
 
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/pgplet
     '';
     doCheck = false; /* test fails with 'No random source available!' */
@@ -5703,7 +5703,7 @@ with self; {
       url = "mirror://cpan/authors/id/G/GT/GTERMARS/CSS-Minifier-XS-0.13.tar.gz";
       hash = "sha256-xBnjCM3IKvHCXWuNB7L/JjR6Yit6Y+wghWq+jbQFH4I=";
     };
-    perlPreHook = lib.optionalString (stdenv.isi686 || stdenv.isDarwin) "export LD=$CC";
+    perlPreHook = lib.optionalString (stdenv.hostPlatform.isi686 || stdenv.hostPlatform.isDarwin) "export LD=$CC";
     buildInputs = [ TestDiagINC ];
     meta = {
       description = "XS based CSS minifier";
@@ -6058,7 +6058,7 @@ with self; {
       homepage = "https://github.com/msgpack/msgpack-perl";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
       maintainers = [ maintainers.sgo ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.DataMessagePack.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.DataMessagePack.x86_64-darwin
     };
   };
 
@@ -6332,12 +6332,12 @@ with self; {
       hash = "sha256-tVypHHafgTN8xrCrIMMmg4eOWyZj8cwljFEamZpd/dM=";
     };
     buildInputs = [ HashUtilFieldHashCompat ModuleBuildXSUtil ScopeGuard TestException ];
-    perlPreHook = lib.optionalString stdenv.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
     meta = {
       description = "Selection of utilities for data and data types";
       homepage = "https://github.com/gfx/Perl-Data-Util";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.DataUtil.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.DataUtil.x86_64-darwin
     };
   };
 
@@ -6488,7 +6488,7 @@ with self; {
     patchPhase = ''
       sed -i "s#/bin/date#${pkgs.coreutils}/bin/date#" lib/Date/Manip/TZ.pm
     '';
-    doCheck = !stdenv.isi686; # build freezes during tests on i686
+    doCheck = !stdenv.hostPlatform.isi686; # build freezes during tests on i686
     buildInputs = [ TestInter ];
     meta = {
       description = "Date manipulation routines";
@@ -7222,7 +7222,7 @@ with self; {
     buildInputs = [ pkgs.oracle-instantclient TestNoWarnings ];
     propagatedBuildInputs = [ DBI ];
 
-    postBuild = lib.optionalString stdenv.isDarwin ''
+    postBuild = lib.optionalString stdenv.hostPlatform.isDarwin ''
       install_name_tool -add_rpath "${pkgs.oracle-instantclient.lib}/lib" blib/arch/auto/DBD/Oracle/Oracle.bundle
     '';
     meta = {
@@ -7275,7 +7275,7 @@ with self; {
     meta = {
       description = "DBI driver for Sybase datasources";
       license = with lib.licenses; [ artistic1 gpl1Only ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.DBDsybase.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.DBDsybase.x86_64-darwin
     };
   };
 
@@ -7637,7 +7637,7 @@ with self; {
       hash = "sha256-z/jSTllF45RN6/ITmVprFVuR5YE0aRVrE9Ws819qXZ8=";
     };
     propagatedBuildInputs = [ HashStoredIterator JSONXS PadWalker ];
-    perlPreHook = lib.optionalString stdenv.isDarwin "export LD=$CC";
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isDarwin "export LD=$CC";
     meta = {
       description = "Perl side of the Perl debugger for IntelliJ IDEA and other JetBrains IDEs";
       license = with lib.licenses; [ mit ];
@@ -7735,8 +7735,8 @@ with self; {
     };
     propagatedBuildInputs = [ FileWhich JSONMaybeXS ];
     buildInputs = [ CaptureTiny TestDifferences ];
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/*
     '';
     meta = {
@@ -8050,8 +8050,8 @@ with self; {
     };
     buildInputs = [ CPANMetaCheck TestDeep TestFailWarnings TestFatal TestFileShareDir ];
     propagatedBuildInputs = [ AppCmd CPANUploader ConfigMVPReaderINI DateTime FileCopyRecursive FileFindRule FileShareDirInstall Filepushd LogDispatchouli MooseXLazyRequire MooseXSetOnce MooseXTypesPerl PathTiny PerlPrereqScanner SoftwareLicense TermEncoding TermUI YAMLTiny ];
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/dzil
     '';
     doCheck = false;
@@ -8630,11 +8630,11 @@ with self; {
     };
     buildInputs = [ CaptureTiny ];
     propagatedBuildInputs = [ EmailAbstract EmailAddressXS EmailSimple ModuleRuntime Moo MooXTypesMooseLike SubExporter Throwable TryTiny ];
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
     postPatch = ''
       patchShebangs --build util
     '';
-    preCheck = lib.optionalString stdenv.isDarwin ''
+    preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang util/sendmail
     '';
     meta = {
@@ -8813,7 +8813,7 @@ with self; {
       url = "mirror://cpan/authors/id/G/GA/GAAS/Encode-Locale-1.05.tar.gz";
       hash = "sha256-F2+gJ3H1QqTvsdvCpMko6PQ5G/QHhHO9YEDY8RrbDsE=";
     };
-    preCheck = if stdenv.isCygwin then ''
+    preCheck = if stdenv.hostPlatform.isCygwin then ''
       sed -i"" -e "s@plan tests => 13@plan tests => 10@" t/env.t
       sed -i"" -e "s@ok(env(\"\\\x@#ok(env(\"\\\x@" t/env.t
       sed -i"" -e "s@ok(\$ENV{\"\\\x@#ok(\$ENV{\"\\\x@" t/env.t
@@ -9180,7 +9180,7 @@ with self; {
       url = "mirror://cpan/authors/id/E/ET/ETJ/ExtUtils-CppGuess-0.26.tar.gz";
       hash = "sha256-yLNiuGAXKkB2rO4AQ49SuGRk8sUAcCz891J4Ef+aaD4=";
     };
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
     nativeBuildInputs = [ pkgs.ld-is-cc-hook ];
     propagatedBuildInputs = [ CaptureTiny ];
     buildInputs = [ ModuleBuild ];
@@ -9915,7 +9915,7 @@ with self; {
     };
     propagatedBuildInputs = [ FileWhich ];
     preCheck = "export HOME=$TMPDIR";
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
     meta = {
       description = "Find your home and other directories on any platform";
       homepage = "https://metacpan.org/release/File-HomeDir";
@@ -9945,7 +9945,7 @@ with self; {
       hash = "sha256-oC+/KFQGqKTZOZKE8DLy1VxWl1FUwuFnS9EJg3uAluw=";
     };
     buildInputs = [ ExtUtilsCChecker ];
-    perlPreHook = lib.optionalString (stdenv.isi686 || stdenv.isDarwin) "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
+    perlPreHook = lib.optionalString (stdenv.hostPlatform.isi686 || stdenv.hostPlatform.isDarwin) "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
     meta = {
       description = "Modify attributes of symlinks without dereferencing them";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -9969,7 +9969,7 @@ with self; {
       description = "Determine MIME types of data or files using libmagic";
       homepage = "https://metacpan.org/release/File::LibMagic";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.FileLibMagic.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.FileLibMagic.x86_64-darwin
     };
   };
 
@@ -10584,7 +10584,7 @@ with self; {
     };
     buildInputs = [ Test2Suite ];
     propagatedBuildInputs = [ Future XSParseKeyword XSParseSublike ];
-    perlPreHook = lib.optionalString stdenv.isDarwin "export LD=$CC";
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isDarwin "export LD=$CC";
     meta = {
       description = "Deferred subroutine syntax for futures";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -10816,8 +10816,8 @@ with self; {
       url = "mirror://cpan/authors/id/T/TO/TORBIAK/App-Git-Autofixup-0.004001.tar.gz";
       hash = "sha256-WroBPI3hOZD1iRoOKjnJcHTQcnvjZTIMLGrxnTbF3aw=";
     };
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/git-autofixup
     '';
     meta = {
@@ -10909,7 +10909,7 @@ with self; {
     postCheck = ''
       rm -r $out/lib
     '';
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
     meta = {
       description = "Dynamically create Perl language bindings";
       homepage = "https://gtk2-perl.sourceforge.net";
@@ -11201,7 +11201,7 @@ with self; {
     ];
     buildInputs = [ pkgs.gtk2 ];
     # https://rt.cpan.org/Public/Bug/Display.html?id=130742
-    # doCheck = !stdenv.isDarwin;
+    # doCheck = !stdenv.hostPlatform.isDarwin;
     doCheck = false;
     propagatedBuildInputs = [ Pango ];
     meta = {
@@ -11222,7 +11222,7 @@ with self; {
     meta = {
       description = "(DEPRECATED) Perl interface to the EggTrayIcon library";
       license = with lib.licenses; [ gpl2Plus ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.Gtk2TrayIcon.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.Gtk2TrayIcon.x86_64-darwin
     };
   };
 
@@ -11273,7 +11273,7 @@ with self; {
     meta = {
       description = "(DEPRECATED) Use single instance applications";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.Gtk2Unique.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.Gtk2Unique.x86_64-darwin
     };
   };
 
@@ -11285,7 +11285,7 @@ with self; {
       hash = "sha256-cNxL8qp0mBx54V/SmNmY4FqS66SBHxrVyfH03jdzesw=";
     };
     propagatedBuildInputs = [ pkgs.gtk3 CairoGObject GlibObjectIntrospection ];
-    preCheck = lib.optionalString stdenv.isDarwin ''
+    preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
       # Currently failing on macOS
       rm t/overrides.t
       rm t/signals.t
@@ -11372,14 +11372,14 @@ with self; {
     };
     buildInputs = [ BotTrainingMegaHAL BotTrainingStarCraft DataSection FileSlurp PodSection TestException TestExpect TestOutput TestScript TestScriptRun ];
     propagatedBuildInputs = [ ClassLoad DBDSQLite DataDump DirSelf FileCountLines GetoptLongDescriptive IOInteractive IPCSystemSimple ListMoreUtils Moose MooseXGetopt MooseXStrictConstructor MooseXTypes RegexpCommon TermSk namespaceclean ];
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
     patches = [
       ../development/perl-modules/Hailo-fix-test-gld.patch
     ];
     postPatch = ''
       patchShebangs bin
     '';
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/hailo
     '';
     meta = {
@@ -11518,12 +11518,12 @@ with self; {
       url = "mirror://cpan/authors/id/Z/ZE/ZEFRAM/Hash-SharedMem-0.005.tar.gz";
       hash = "sha256-Mkd2gIYC973EStqpN4lTZUVAKakm+mEfMhyb9rlAu14=";
     };
-    env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isAarch64 "-mno-outline-atomics";
+    env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isAarch64 "-mno-outline-atomics";
     buildInputs = [ ScalarString ];
     meta = {
       description = "Efficient shared mutable hash";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.HashSharedMem.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.HashSharedMem.x86_64-darwin
     };
   };
 
@@ -11535,7 +11535,7 @@ with self; {
       hash = "sha256-ucvE3NgjPo0dfxSB3beaSl+dtxgMs+8CtLy+4F5l6gw=";
     };
     buildInputs = [ Test2Suite ];
-    perlPreHook = lib.optionalString stdenv.isDarwin "export LD=$CC";
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isDarwin "export LD=$CC";
     meta = {
       description = "Functions for accessing a hashes internal iterator";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -11619,12 +11619,12 @@ with self; {
       hash = "sha256-Wl7viWUA0epsJKkIXs++mkOr7mjPxmwD+InSostoml0=";
     };
     buildInputs = [ ModuleBuildPluggablePPPort TestRequires ];
-    perlPreHook = lib.optionalString stdenv.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
     meta = {
       description = "Extremely fast HTML escaping";
       homepage = "https://github.com/tokuhirom/HTML-Escape";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.HTMLEscape.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.HTMLEscape.x86_64-darwin
     };
   };
 
@@ -12216,8 +12216,8 @@ with self; {
       description = "XS extension for processing HTTP headers";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
       broken =
-        stdenv.isi686 # loadable library and perl binaries are mismatched (got handshake key 0x7d40080, needed 0x7dc0080)
-        || stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.HTTPHeaderParserXS.x86_64-darwin
+        stdenv.hostPlatform.isi686 # loadable library and perl binaries are mismatched (got handshake key 0x7d40080, needed 0x7dc0080)
+        || stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.HTTPHeaderParserXS.x86_64-darwin
     };
   };
 
@@ -12468,7 +12468,7 @@ with self; {
       description = "Perl interface to libpng";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
       mainProgram = "pnginspect";
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.ImagePNGLibpng.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.ImagePNGLibpng.x86_64-darwin
     };
   };
 
@@ -12652,8 +12652,8 @@ with self; {
     };
     buildInputs = [ CanaryStability ];
     propagatedBuildInputs = [ commonsense ];
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/treescan
     '';
     meta = {
@@ -12745,7 +12745,7 @@ with self; {
     };
     propagatedBuildInputs = [ CompressRawBzip2 CompressRawZlib ];
     # Same as CompressRawZlib
-    doCheck = false && !stdenv.isDarwin;
+    doCheck = false && !stdenv.hostPlatform.isDarwin;
     meta = {
       description = "IO Interface to compressed data files/buffers";
       homepage = "https://github.com/pmqs/IO-Compress";
@@ -12804,7 +12804,7 @@ with self; {
       url = "mirror://cpan/authors/id/L/LD/LDS/IO-Interface-1.09.tar.gz";
       hash = "sha256-5j6BxS6x4OYOwtmD9VUtJJPhFxeZJclnV/I8S9n6cTo=";
     };
-    nativeBuildInputs = lib.optionals stdenv.isDarwin [ pkgs.ld-is-cc-hook ];
+    nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ pkgs.ld-is-cc-hook ];
     meta = {
       description = "Access and modify network interface card configuration";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -13067,7 +13067,7 @@ with self; {
       hash = "sha256-pfGoMCC8W13WwbVw9Ix1RuCo9/rBCgaHQLA5Ja2eFOg=";
     };
     patches = [ ../development/perl-modules/IO-Tty-fix-makefile.patch ];
-    doCheck = !stdenv.isDarwin;  # openpty fails in the sandbox
+    doCheck = !stdenv.hostPlatform.isDarwin;  # openpty fails in the sandbox
     meta = {
       description = "Low-level allocate a pseudo-Tty, import constants";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -13274,7 +13274,7 @@ with self; {
         available to the Perl program as if they had been written in Perl.
       '';
       license = with lib.licenses; [ artistic2 ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.InlineJava.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.InlineJava.x86_64-darwin
     };
   };
 
@@ -13299,7 +13299,7 @@ with self; {
       hash = "sha256-XZsDT1jwtv9bZGR708WpzgWypw7e4zn7wxc67nR8wFA=";
     };
     buildInputs = [ TestDiagINC ];
-    perlPreHook = lib.optionalString (stdenv.isi686 || stdenv.isDarwin) "export LD=$CC";
+    perlPreHook = lib.optionalString (stdenv.hostPlatform.isi686 || stdenv.hostPlatform.isDarwin) "export LD=$CC";
     meta = {
       description = "XS based JavaScript minifier";
       homepage = "https://metacpan.org/release/JavaScript-Minifier-XS";
@@ -13534,12 +13534,12 @@ with self; {
     };
     outputs = [ "out" "tex" ];
     propagatedBuildInputs = [ ArchiveZip DBFile FileWhich IOString ImageMagick ImageSize JSONXS LWP ParseRecDescent PodParser TextUnidecode XMLLibXSLT ];
-    nativeBuildInputs = [ pkgs.makeWrapper ] ++ lib.optional stdenv.isDarwin shortenPerlShebang;
+    nativeBuildInputs = [ pkgs.makeWrapper ] ++ lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
     makeMakerFlags = [ "TEXMF=\${tex}" "NOMKTEXLSR" ];
     # shebangs need to be patched before executables are copied to $out
     preBuild = ''
       patchShebangs bin/
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       for file in bin/*; do
         shortenPerlShebang "$file"
       done
@@ -14002,7 +14002,7 @@ with self; {
     };
     buildInputs = [ TestException ];
     propagatedBuildInputs = [ SubExporter ];
-    perlPreHook = lib.optionalString stdenv.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
     meta = {
       description = "Linux specific special filehandles";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -14662,7 +14662,7 @@ with self; {
     postPatch = lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
       substituteInPlace Makefile.PL --replace 'if has_module' 'if 0; #'
     '';
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
     nativeCheckInputs = [ HTTPDaemon TestFatal TestNeeds TestRequiresInternet ];
     meta = {
       description = "World-Wide Web library for Perl";
@@ -15333,7 +15333,7 @@ with self; {
       description = "Manipulate 128 bits integers in Perl";
       homepage = "https://metacpan.org/release/Math-Int128";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
-      broken = stdenv.is32bit; # compiler doesn't support a 128-bit integer type
+      broken = stdenv.hostPlatform.is32bit; # compiler doesn't support a 128-bit integer type
     };
   };
 
@@ -15570,7 +15570,7 @@ with self; {
       description = "Fast XS implementation of MaxMind DB reader";
       homepage = "https://metacpan.org/release/MaxMind-DB-Reader-XS";
       license = with lib.licenses; [ artistic2 ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.MaxMindDBReaderXS.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.MaxMindDBReaderXS.x86_64-darwin
     };
   };
 
@@ -15588,7 +15588,7 @@ with self; {
       description = "Create MaxMind DB database files";
       homepage = "https://metacpan.org/release/MaxMind-DB-Writer";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.MaxMindDBWriter.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.MaxMindDBWriter.x86_64-darwin
     };
   };
 
@@ -16954,7 +16954,7 @@ with self; {
     };
     buildInputs = [ ModuleInstall ];
     propagatedBuildInputs = [ AlgorithmLCSS CHI DataSerializer DevelStackTrace Mojolicious Readonly StringTruncate ];
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
     meta = {
       description = "Caching, Non-blocking I/O HTTP, Local file and WebSocket user agent";
       homepage = "https://github.com/nicomen/mojo-useragent-cached";
@@ -18114,8 +18114,8 @@ with self; {
     };
     buildInputs = [ ModuleBuildXSUtil TestException TestFatal TestLeakTrace TestOutput TestRequires TryTiny ];
     perlPreHook = "export LD=$CC";
-    env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isi686 "-fno-stack-protector";
-    hardeningDisable = lib.optional stdenv.isi686 "stackprotector";
+    env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isi686 "-fno-stack-protector";
+    hardeningDisable = lib.optional stdenv.hostPlatform.isi686 "stackprotector";
     meta = {
       description = "Moose minus the antlers";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -18458,7 +18458,7 @@ with self; {
     };
     buildInputs = [ HTTPCookies Test2Suite TestMetricsAny ];
     propagatedBuildInputs = [ Future HTTPMessage IOAsync MetricsAny StructDumb URI ];
-    preCheck = lib.optionalString stdenv.isDarwin ''
+    preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
       # network tests fail on Darwin/sandbox, so disable these
       rm -f t/20local-connect.t t/22local-connect-pipeline.t t/23local-connect-redir.t
       rm -f t/90rt75615.t t/90rt75616.t t/90rt93232.t
@@ -18511,7 +18511,7 @@ with self; {
       hash = "sha256-DayDQtPHii/syr1GZxRd1a3U+4zRjRVtKXoead/hFgA=";
     };
     propagatedBuildInputs = [ IOAsync ProtocolWebSocket URI ];
-    preCheck = lib.optionalString stdenv.isDarwin ''
+    preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
       # network tests fail on Darwin/sandbox, so disable these
       rm -f t/02server.t t/03cross.t
     '';
@@ -18724,7 +18724,7 @@ with self; {
     meta = {
       description = "OOP Interface to FreeDB Server(s)";
       license = with lib.licenses; [ artistic1 ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.NetFreeDB.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.NetFreeDB.x86_64-darwin
     };
   };
 
@@ -19503,7 +19503,7 @@ with self; {
       hash = "sha256-z4jSquGKKHHX1/MPi6bU7lv5U+IP3KileME8dB0W0a0=";
     };
     buildInputs = [ Test2Suite TestFatal TestRefcount ];
-    perlPreHook = lib.optionalString stdenv.isDarwin "export LD=$CC";
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isDarwin "export LD=$CC";
     propagatedBuildInputs = [ XSParseKeyword XSParseSublike ];
     meta = {
       description = "Simple syntax for lexical field-based objects";
@@ -19690,7 +19690,7 @@ with self; {
     # https://github.com/NixOS/nixpkgs/pull/104889#issuecomment-737144513
     preCheck = ''
       rm t/35_log.t
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       rm t/30_connect.t
       rm t/45_class.t
     '';
@@ -19862,7 +19862,7 @@ with self; {
       url = "mirror://cpan/authors/id/Z/ZE/ZEFRAM/Params-Classify-0.015.tar.gz";
       hash = "sha256-OY7BXNiZ/Ni+89ueoXSL9jHxX2wyviA+R1tn31EKWRQ=";
     };
-    perlPreHook = lib.optionalString stdenv.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
     meta = {
       description = "Argument type classification";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -20379,9 +20379,9 @@ with self; {
       hash = "sha256-5c2V3j5DvOcHdRdidLqkBfMm/IdA3wBUu4FpdcyNNJs=";
     };
     buildInputs = [ TestDeep ];
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
     propagatedBuildInputs = [ BKeywords ConfigTiny ExceptionClass FileWhich ListSomeUtils ModulePluggable PPI PPIxQuoteLike PPIxRegexp PPIxUtilities PPIxUtils PerlTidy PodSpell Readonly StringFormat ];
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/perlcritic
     '';
     meta = {
@@ -20885,8 +20885,8 @@ with self; {
       hash = "sha256-RVW1J5nBZBXDy/5eMB6gLKDrvDQhTH/lLx19ykUwLik=";
     };
     propagatedBuildInputs = [ Future FutureQueue IOAsync PPI PPR PathTiny PerlCritic PerlTidy PodMarkdown URI ];
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/pls
     '';
     meta = {
@@ -21815,8 +21815,8 @@ with self; {
       url = "mirror://cpan/authors/id/S/SY/SYP/App-rainbarf-1.4.tar.gz";
       hash = "sha256-TxOa01+q8t4GI9wLsd2J+lpDHlSL/sh97hlM8OJcyX0=";
     };
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/rainbarf
     '';
     meta = {
@@ -22890,8 +22890,8 @@ with self; {
       patchShebangs script
     '';
 
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       for file in $out/bin/*; do
         shortenPerlShebang $file
       done
@@ -22941,7 +22941,7 @@ with self; {
     };
     buildInputs = [ LWP TestSharedFork TestTCP ];
     propagatedBuildInputs = [ ParallelPrefork Plack ServerStarter ];
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
     meta = {
       description = "Simple, high-performance PSGI/Plack HTTP server";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -22956,9 +22956,9 @@ with self; {
       hash = "sha256-b/q5FfMj9gCJ4+v4Urm5cH1pFyZt+K/XNw+sBL/f7k4=";
     };
     buildInputs = [ LWP ModuleBuildTiny TestRequires TestTCP ];
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
     propagatedBuildInputs = [ DataDump HTTPParserXS NetServer Plack NetServerSSPrefork IOSocketINET6 ];
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/starman
     '';
 
@@ -23318,7 +23318,7 @@ with self; {
       url = "mirror://cpan/authors/id/R/RO/ROSCH/String-ShellQuote-1.04.tar.gz";
       hash = "sha256-5gY2UDjOINZG0lXIBe/90y+GR18Y1DynVFWwDk2G3TU=";
     };
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
     meta = {
       description = "Quote strings for passing through the shell";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -23626,7 +23626,7 @@ with self; {
       hash = "sha256-oSfa52RcGpVwzZopcMbcST1SL/BzGKNKOeQJCY9pESU=";
     };
     propagatedBuildInputs = [ LexicalSealRequireHints ];
-    perlPreHook = lib.optionalString stdenv.isDarwin "export LD=$CC";
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isDarwin "export LD=$CC";
     meta = {
       description = "Detect undeclared subroutines in compilation";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -23668,7 +23668,7 @@ with self; {
       url = "mirror://cpan/authors/id/T/TO/TODDR/Safe-Hole-0.14.tar.gz";
       hash = "sha256-9PVui70GxP5K4G2xIYbeyt+6wep3XqGMbAKJSB0V7AU=";
     };
-    perlPreHook = lib.optionalString stdenv.isDarwin "export LD=$CC";
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isDarwin "export LD=$CC";
     meta = {
       description = "Lib/Safe/Hole.pm";
       homepage = "https://github.com/toddr/Safe-Hole";
@@ -23788,7 +23788,7 @@ with self; {
     };
     buildInputs = [ Test2Suite ];
     propagatedBuildInputs = [ XSParseKeyword ];
-    perlPreHook = lib.optionalString (stdenv.isi686 || stdenv.isDarwin) "export LD=$CC";
+    perlPreHook = lib.optionalString (stdenv.hostPlatform.isi686 || stdenv.hostPlatform.isDarwin) "export LD=$CC";
     meta = {
       description = "Try/catch/finally syntax for perl";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -23843,8 +23843,8 @@ with self; {
         hash = "sha256-nCypGyi6bZDEXqdb7wlGGzk9cFzmYkWGP1slBpXDfHw=";
       })
     ];
-    buildInputs = lib.optional stdenv.isDarwin pkgs.darwin.apple_sdk.frameworks.Carbon;
-    doCheck = !stdenv.isAarch64;
+    buildInputs = lib.optional stdenv.hostPlatform.isDarwin pkgs.darwin.apple_sdk.frameworks.Carbon;
+    doCheck = !stdenv.hostPlatform.isAarch64;
     meta = {
       description = "Perl extension for getting CPU information. Currently only number of CPU's supported";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -23887,7 +23887,7 @@ with self; {
       url = "mirror://cpan/authors/id/L/LB/LBAXTER/Sys-SigAction-0.23.tar.gz";
       hash = "sha256-xO9sk0VTQDH8u+Ktw0f8cZTUevyUXnpE+sfpVjCV01M=";
     };
-    doCheck = !stdenv.isAarch64; # it hangs on Aarch64
+    doCheck = !stdenv.hostPlatform.isAarch64; # it hangs on Aarch64
     meta = {
       description = "Perl extension for Consistent Signal Handling";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -23933,12 +23933,12 @@ with self; {
     };
     nativeBuildInputs = [ pkgs.pkg-config ];
     buildInputs = [ pkgs.libvirt CPANChanges TestPod TestPodCoverage XMLXPath ];
-    perlPreHook = lib.optionalString stdenv.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
     meta = {
       description = "Libvirt Perl API";
       homepage = "https://libvirt.org";
       license = with lib.licenses; [ gpl2Plus artistic1 ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.SysVirt.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.SysVirt.x86_64-darwin
     };
   };
 
@@ -23949,7 +23949,7 @@ with self; {
       url = "mirror://cpan/authors/id/D/DW/DWHEELER/TAP-Parser-SourceHandler-pgTAP-3.36.tar.gz";
       hash = "sha256-B75RUy4GPqxu2OWBUFRw7ryB1VBkQa8tzzK8Dr7pjGc=";
     };
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
     meta = {
       description = "Stream TAP from pgTAP test scripts";
       homepage = "https://search.cpan.org/dist/Tap-Parser-Sourcehandler-pgTAP";
@@ -24044,9 +24044,9 @@ with self; {
       pkgs.tcl
       pkgs.tix
       pkgs.tk
-    ] ++ lib.optionals stdenv.isDarwin [
+    ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
       darwin.apple_sdk.frameworks.CoreServices ];
-    makeMakerFlags = lib.optionals stdenv.isLinux
+    makeMakerFlags = lib.optionals stdenv.hostPlatform.isLinux
       [ "--tclsh=${pkgs.tcl}/bin/tclsh" "--nousestubs" ];
     meta = {
       description = "Tcl extension module for Perl";
@@ -24074,7 +24074,7 @@ with self; {
       mkdir -p $out/lib/perl5/site_perl
       mv $out/lib/perl5/Tcl $out/lib/perl5/site_perl/
       mv $out/lib/perl5/auto $out/lib/perl5/site_perl/
-    '' + lib.optionalString stdenv.isDarwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
       mv $out/lib/perl5/darwin-thread-multi-2level $out/lib/perl5/site_perl/
     '';
     meta = {
@@ -24190,7 +24190,7 @@ with self; {
       url = "mirror://cpan/authors/id/A/AB/ABW/Template-Toolkit-3.101.tar.gz";
       hash = "sha256-0qMt1sIeSzfGqT34CHyp6IDPrmE6Pl766jB7C9yu21g=";
     };
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
     propagatedBuildInputs = [ AppConfig ];
     buildInputs = [ CGI TestLeakTrace ];
     meta = {
@@ -24524,7 +24524,7 @@ with self; {
       description = "New and improved test harness with better Test2 integration";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
       mainProgram = "yath";
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.Test2Harness.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.Test2Harness.x86_64-darwin
     };
   };
 
@@ -25330,7 +25330,7 @@ with self; {
     meta = {
       description = "Assert that code does not cause growth in memory usage";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.TestMemoryGrowth.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.TestMemoryGrowth.x86_64-darwin
     };
   };
 
@@ -25824,7 +25824,7 @@ with self; {
     };
     buildInputs = [ TestRun TestTrap ];
     propagatedBuildInputs = [ MooseXGetopt UNIVERSALrequire YAMLLibYAML ];
-    doCheck = !stdenv.isDarwin;
+    doCheck = !stdenv.hostPlatform.isDarwin;
     meta = {
       description = "Analyze tests from the command line using Test::Run";
       homepage = "http://web-cpan.berlios.de/modules/Test-Run";
@@ -26381,7 +26381,7 @@ with self; {
     # libbtparse.so: cannot open shared object file
     patches = [ ../development/perl-modules/TextBibTeX-use-lib.patch ];
     perlPreHook = "export LD=$CC";
-    perlPostHook = lib.optionalString stdenv.isDarwin ''
+    perlPostHook = lib.optionalString stdenv.hostPlatform.isDarwin ''
       oldPath="$(pwd)/btparse/src/libbtparse.dylib"
       newPath="$out/lib/libbtparse.dylib"
 
@@ -26573,7 +26573,7 @@ with self; {
     meta = {
       description = "Perl interface to iconv() codeset conversion function";
       license = with lib.licenses; [ artistic1 gpl1Plus ]; # taken from el6
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.TextIconv.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.TextIconv.x86_64-darwin
     };
   };
 
@@ -26689,7 +26689,7 @@ with self; {
       hash = "sha256-U6cw/29IgrmavYVW8mqRH1gvZ1tZ8OFnJe0ey8CE7lA=";
     };
     buildInputs = [ Filepushd ];
-    perlPreHook = lib.optionalString stdenv.isDarwin "export LD=$CC";
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isDarwin "export LD=$CC";
     meta = {
       description = "Hoedown for Perl5";
       homepage = "https://github.com/tokuhirom/Text-Markdown-Hoedown";
@@ -27037,7 +27037,7 @@ with self; {
     meta = {
       description = "Remove accents from a string";
       license = with lib.licenses; [ gpl2Only ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.TextUnaccent.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.TextUnaccent.x86_64-darwin
     };
   };
 
@@ -27132,7 +27132,7 @@ with self; {
       url = "mirror://cpan/authors/id/K/KU/KUBOTA/Text-WrapI18N-0.06.tar.gz";
       hash = "sha256-S9KaF/DCx5LRLBAFs8J28qsPrjnACFmuF0HXlBhGpIg=";
     };
-    buildInputs = lib.optionals (!stdenv.isDarwin) [ pkgs.glibcLocales ];
+    buildInputs = lib.optionals (!stdenv.hostPlatform.isDarwin) [ pkgs.glibcLocales ];
     propagatedBuildInputs = [ TextCharWidth ];
     preConfigure = ''
       substituteInPlace WrapI18N.pm --replace '/usr/bin/locale' '${pkgs.unixtools.locale}/bin/locale'
@@ -27710,7 +27710,7 @@ with self; {
       url = "mirror://cpan/authors/id/A/AR/ARODLAND/Unicode-CaseFold-1.01.tar.gz";
       hash = "sha256-QYohKAj50Li7MwrJBQltLdNkl2dT1McVNNq5g2pjGU0=";
     };
-    perlPreHook = lib.optionalString stdenv.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isi686 "export LD=$CC"; # fix undefined reference to `__stack_chk_fail_local'
     meta = {
       description = "Unicode case-folding for case-insensitive lookups";
       homepage = "https://metacpan.org/release/Unicode-CaseFold";
@@ -27988,7 +27988,7 @@ with self; {
       url = "mirror://cpan/authors/id/C/CV/CVLIBRARY/UUID4-Tiny-0.003.tar.gz";
       hash = "sha256-4S9sgrg1dcORd3O0HA+1HPeDx8bPcuDJkWks4u8Hg2I=";
     };
-    postPatch = lib.optionalString (stdenv.isAarch64) ''
+    postPatch = lib.optionalString (stdenv.hostPlatform.isAarch64) ''
       # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/uapi/asm-generic/unistd.h
       # printf SYS_getrandom | gcc -include sys/syscall.h -E -
       substituteInPlace lib/UUID4/Tiny.pm \
@@ -28188,7 +28188,7 @@ with self; {
     meta = {
       description = "Use WWW::Mechanize with CGI applications";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
-      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.WWWMechanizeCGI.x86_64-darwin
+      broken = stdenv.hostPlatform.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.WWWMechanizeCGI.x86_64-darwin
     };
   };
 
@@ -28449,9 +28449,9 @@ with self; {
       url = "mirror://cpan/authors/id/S/SI/SIXTEASE/XML-Entities-1.0002.tar.gz";
       hash = "sha256-wyqk8wlXPXZIqy5Bb2K2sgZS8q2c/T7sgv1REB/nMQ0=";
     };
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
     propagatedBuildInputs = [ LWP ];
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/download-entities.pl
     '';
     meta = {
@@ -28524,12 +28524,12 @@ with self; {
       url = "mirror://cpan/authors/id/G/GR/GRANTM/XML-Filter-Sort-1.01.tar.gz";
       hash = "sha256-UQWF85pJFszV+o1UXpYXnJHq9vx8l6QBp1aOhBFi+l8=";
     };
-    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+    nativeBuildInputs = lib.optional stdenv.hostPlatform.isDarwin shortenPerlShebang;
     propagatedBuildInputs = [
       XMLSAX
       XMLSAXWriter
     ];
-    postInstall = lib.optionalString stdenv.isDarwin ''
+    postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
       shortenPerlShebang $out/bin/xmlsort
     '';
     meta = {
@@ -28581,7 +28581,7 @@ with self; {
     };
     SKIP_SAX_INSTALL = 1;
     buildInputs = [ AlienBuild AlienLibxml2 ]
-      ++ lib.optionals stdenv.isDarwin (with pkgs; [ libiconv zlib ]);
+      ++ lib.optionals stdenv.hostPlatform.isDarwin (with pkgs; [ libiconv zlib ]);
     patches = [
       # https://github.com/shlomif/perl-XML-LibXML/pull/87
       ../development/perl-modules/XML-LibXML-fix-tests-libxml-2.13.0.patch
@@ -28659,7 +28659,7 @@ with self; {
     patches = [ ../development/perl-modules/xml-parser-0001-HACK-Assumes-Expat-paths-are-good.patch ];
     postPatch = lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
       substituteInPlace Expat/Makefile.PL --replace 'use English;' '#'
-    '' + lib.optionalString stdenv.isCygwin ''
+    '' + lib.optionalString stdenv.hostPlatform.isCygwin ''
       sed -i"" -e "s@my \$compiler = File::Spec->catfile(\$path, \$cc\[0\]) \. \$Config{_exe};@my \$compiler = File::Spec->catfile(\$path, \$cc\[0\]) \. (\$^O eq 'cygwin' ? \"\" : \$Config{_exe});@" inc/Devel/CheckLib.pm
     '';
     makeMakerFlags = [ "EXPATLIBPATH=${pkgs.expat.out}/lib" "EXPATINCPATH=${pkgs.expat.dev}/include" ];
@@ -28959,7 +28959,7 @@ with self; {
       hash = "sha256-JQDEeGnPXKjGHdI8Z7rav2a48e+14nkgdlfBzmk+IR4=";
     };
     buildInputs = [ ExtUtilsCChecker Test2Suite ];
-    perlPreHook = lib.optionalString (stdenv.isi686 || stdenv.isDarwin) "export LD=$CC";
+    perlPreHook = lib.optionalString (stdenv.hostPlatform.isi686 || stdenv.hostPlatform.isDarwin) "export LD=$CC";
     meta = {
       description = "XS functions to assist in parsing keyword syntax";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -28975,7 +28975,7 @@ with self; {
       hash = "sha256-Wn0myqMroqQQUZwMJLHYCznvMgdRN224vbef2u/pms0=";
     };
     buildInputs = [ Test2Suite ];
-    perlPreHook = lib.optionalString stdenv.isDarwin "export LD=$CC";
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isDarwin "export LD=$CC";
     meta = {
       description = "XS functions to assist in parsing sub-like syntax";
       license = with lib.licenses; [ artistic1 gpl1Plus ];
@@ -29037,7 +29037,7 @@ with self; {
       url = "mirror://cpan/authors/id/T/TO/TODDR/YAML-Syck-1.34.tar.gz";
       hash = "sha256-zJFWzK69p5jr/i8xthnoBld/hg7RcEJi8X/608bjQVk=";
     };
-    perlPreHook = lib.optionalString stdenv.isDarwin "export LD=$CC";
+    perlPreHook = lib.optionalString stdenv.hostPlatform.isDarwin "export LD=$CC";
     meta = {
       description = "Fast, lightweight YAML loader and dumper";
       homepage = "https://github.com/toddr/YAML-Syck";
diff --git a/pkgs/top-level/php-packages.nix b/pkgs/top-level/php-packages.nix
index 7cef004a8745..8710dd6d977d 100644
--- a/pkgs/top-level/php-packages.nix
+++ b/pkgs/top-level/php-packages.nix
@@ -253,7 +253,7 @@ in {
 
     datadog_trace = callPackage ../development/php-packages/datadog_trace {
       buildPecl = buildPecl.override {
-        stdenv = if stdenv.isDarwin then overrideSDK stdenv "11.0" else stdenv;
+        stdenv = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv;
       };
       inherit (pkgs) darwin;
     };
@@ -463,7 +463,7 @@ in {
           name = "iconv";
           buildInputs = [ libiconv ];
           configureFlags = [ "--with-iconv" ];
-          doCheck = stdenv.isLinux;
+          doCheck = stdenv.hostPlatform.isLinux;
         }
         {
           name = "imap";
@@ -484,7 +484,7 @@ in {
             "LDAP_DIR=${openldap.dev}"
             "LDAP_INCDIR=${openldap.dev}/include"
             "LDAP_LIBDIR=${openldap.out}/lib"
-          ] ++ lib.optionals stdenv.isLinux [
+          ] ++ lib.optionals stdenv.hostPlatform.isLinux [
             "--with-ldap-sasl=${cyrus_sasl.dev}"
           ];
           doCheck = false;
@@ -528,11 +528,11 @@ in {
           name = "opcache";
           buildInputs = [ pcre2 ] ++
             lib.optional
-              (!stdenv.isDarwin && lib.meta.availableOn stdenv.hostPlatform valgrind)
+              (!stdenv.hostPlatform.isDarwin && lib.meta.availableOn stdenv.hostPlatform valgrind)
               valgrind.dev;
           configureFlags = lib.optional php.ztsSupport "--disable-opcache-jit";
           zendExtension = true;
-          postPatch = lib.optionalString stdenv.isDarwin ''
+          postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
             # Tests are flaky on darwin
             rm ext/opcache/tests/blacklist.phpt
             rm ext/opcache/tests/bug66338.phpt
@@ -567,7 +567,7 @@ in {
           internalDeps = [ php.extensions.pdo ];
           configureFlags = [ "--with-pdo-dblib=${freetds}" ];
           # Doesn't seem to work on darwin.
-          enable = (!stdenv.isDarwin);
+          enable = (!stdenv.hostPlatform.isDarwin);
           doCheck = false;
         }
         {
@@ -671,7 +671,7 @@ in {
           buildInputs = [ net-snmp openssl ];
           configureFlags = [ "--with-snmp" ];
           # net-snmp doesn't build on darwin.
-          enable = (!stdenv.isDarwin);
+          enable = (!stdenv.hostPlatform.isDarwin);
           doCheck = false;
         }
         {
@@ -680,7 +680,7 @@ in {
           configureFlags = [
             "--enable-soap"
           ];
-          doCheck = stdenv.isDarwin;  # TODO: a couple tests still fail on *-linux
+          doCheck = stdenv.hostPlatform.isDarwin;  # TODO: a couple tests still fail on *-linux
           internalDeps = [ php.extensions.session ];
           patches = lib.optionals (lib.versions.majorMinor php.version == "8.1") [
             # Fix tests with libxml2 2.12
@@ -731,7 +731,7 @@ in {
           # The `sqlite3_bind_bug68849.phpt` test is currently broken for i686 Linux systems since sqlite 3.43, cf.:
           # - https://github.com/php/php-src/issues/12076
           # - https://www.sqlite.org/forum/forumpost/abbb95376ec6cd5f
-          patches = lib.optionals (stdenv.isi686 && stdenv.isLinux) [
+          patches = lib.optionals (stdenv.hostPlatform.isi686 && stdenv.hostPlatform.isLinux) [
             ../development/interpreters/php/skip-sqlite3_bind_bug68849.phpt.patch
           ];
         }
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 386d2d8be17f..696a16f844ee 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7644,7 +7644,7 @@ self: super: with self; {
   matlink-gpapi = callPackage ../development/python-modules/matlink-gpapi { };
 
   matplotlib = callPackage ../development/python-modules/matplotlib {
-    stdenv = if stdenv.isDarwin then pkgs.clangStdenv else pkgs.stdenv;
+    stdenv = if stdenv.hostPlatform.isDarwin then pkgs.clangStdenv else pkgs.stdenv;
     inherit (pkgs.darwin.apple_sdk.frameworks) Cocoa;
     ghostscript = pkgs.ghostscript_headless;
   };
@@ -10687,7 +10687,7 @@ self: super: with self; {
   psd-tools = callPackage ../development/python-modules/psd-tools { };
 
   psutil = callPackage ../development/python-modules/psutil {
-    stdenv = if pkgs.stdenv.isDarwin then pkgs.overrideSDK pkgs.stdenv "11.0" else pkgs.stdenv;
+    stdenv = if pkgs.stdenv.hostPlatform.isDarwin then pkgs.overrideSDK pkgs.stdenv "11.0" else pkgs.stdenv;
     inherit (pkgs.darwin.apple_sdk.frameworks) CoreFoundation IOKit;
   };
 
diff --git a/pkgs/top-level/qt5-packages.nix b/pkgs/top-level/qt5-packages.nix
index b0091a16f3da..e491c443657f 100644
--- a/pkgs/top-level/qt5-packages.nix
+++ b/pkgs/top-level/qt5-packages.nix
@@ -154,7 +154,7 @@ in (noExtraAttrs (kdeFrameworks // plasmaMobileGear // plasma5 // plasma5.thirdP
   liblastfm = callPackage ../development/libraries/liblastfm { };
 
   libopenshot = callPackage ../development/libraries/libopenshot {
-    stdenv = if pkgs.stdenv.isDarwin then pkgs.overrideSDK pkgs.stdenv "11.0" else pkgs.stdenv;
+    stdenv = if pkgs.stdenv.hostPlatform.isDarwin then pkgs.overrideSDK pkgs.stdenv "11.0" else pkgs.stdenv;
     python3 = pkgs.python311;
   };
 
@@ -205,7 +205,7 @@ in (noExtraAttrs (kdeFrameworks // plasmaMobileGear // plasma5 // plasma5.thirdP
   pulseaudio-qt = callPackage ../development/libraries/pulseaudio-qt { };
 
   qca = callPackage ../development/libraries/qca {
-    stdenv = if pkgs.stdenv.isDarwin then pkgs.overrideSDK pkgs.stdenv "11.0" else pkgs.stdenv;
+    stdenv = if pkgs.stdenv.hostPlatform.isDarwin then pkgs.overrideSDK pkgs.stdenv "11.0" else pkgs.stdenv;
     inherit (libsForQt5) qtbase;
   };
   qca-qt5 = self.qca;
@@ -237,7 +237,7 @@ in (noExtraAttrs (kdeFrameworks // plasmaMobileGear // plasma5 // plasma5.thirdP
   qtinstaller = callPackage ../development/libraries/qtinstaller { };
 
   qtkeychain = callPackage ../development/libraries/qtkeychain {
-    stdenv = if pkgs.stdenv.isDarwin then pkgs.overrideSDK pkgs.stdenv "11.0" else pkgs.stdenv;
+    stdenv = if pkgs.stdenv.hostPlatform.isDarwin then pkgs.overrideSDK pkgs.stdenv "11.0" else pkgs.stdenv;
     inherit (pkgs.darwin.apple_sdk.frameworks) CoreFoundation Security;
   };
 
diff --git a/pkgs/top-level/stage.nix b/pkgs/top-level/stage.nix
index 6ad193c8926d..265ab242d86d 100644
--- a/pkgs/top-level/stage.nix
+++ b/pkgs/top-level/stage.nix
@@ -312,7 +312,7 @@ let
       crossSystem = {
         isStatic = true;
         parsed =
-          if stdenv.isLinux
+          if stdenv.hostPlatform.isLinux
           then makeMuslParsedPlatform stdenv.hostPlatform.parsed
           else stdenv.hostPlatform.parsed;
         gcc = lib.optionalAttrs (stdenv.hostPlatform.system == "powerpc64-linux") { abi = "elfv2"; } //
diff --git a/pkgs/top-level/wine-packages.nix b/pkgs/top-level/wine-packages.nix
index 18596f21014e..c31ae27c6fcf 100644
--- a/pkgs/top-level/wine-packages.nix
+++ b/pkgs/top-level/wine-packages.nix
@@ -9,35 +9,35 @@ rec {
 
   base = minimal.override {
     gettextSupport = true;
-    fontconfigSupport = stdenv.isLinux;
-    alsaSupport = stdenv.isLinux;
+    fontconfigSupport = stdenv.hostPlatform.isLinux;
+    alsaSupport = stdenv.hostPlatform.isLinux;
     openglSupport = true;
     vulkanSupport = true;
     tlsSupport = true;
     cupsSupport = true;
-    dbusSupport = stdenv.isLinux;
-    cairoSupport = stdenv.isLinux;
+    dbusSupport = stdenv.hostPlatform.isLinux;
+    cairoSupport = stdenv.hostPlatform.isLinux;
     cursesSupport = true;
-    saneSupport = stdenv.isLinux;
-    pulseaudioSupport = config.pulseaudio or stdenv.isLinux;
-    udevSupport = stdenv.isLinux;
-    xineramaSupport = stdenv.isLinux;
+    saneSupport = stdenv.hostPlatform.isLinux;
+    pulseaudioSupport = config.pulseaudio or stdenv.hostPlatform.isLinux;
+    udevSupport = stdenv.hostPlatform.isLinux;
+    xineramaSupport = stdenv.hostPlatform.isLinux;
     sdlSupport = true;
     mingwSupport = true;
     usbSupport = true;
-    waylandSupport = stdenv.isLinux;
-    x11Support = stdenv.isLinux;
+    waylandSupport = stdenv.hostPlatform.isLinux;
+    x11Support = stdenv.hostPlatform.isLinux;
   };
 
   full = base.override {
-    gtkSupport = stdenv.isLinux;
+    gtkSupport = stdenv.hostPlatform.isLinux;
     gstreamerSupport = true;
     openclSupport = true;
     odbcSupport = true;
-    netapiSupport = stdenv.isLinux;
-    vaSupport = stdenv.isLinux;
+    netapiSupport = stdenv.hostPlatform.isLinux;
+    vaSupport = stdenv.hostPlatform.isLinux;
     pcapSupport = true;
-    v4lSupport = stdenv.isLinux;
+    v4lSupport = stdenv.hostPlatform.isLinux;
     gphoto2Support = true;
     krb5Support = true;
     embedInstallers = true;

From 63fa53d97cb5d1c9fac3facab500926684772f35 Mon Sep 17 00:00:00 2001
From: Artturin <Artturin@artturin.com>
Date: Tue, 24 Sep 2024 18:51:25 +0300
Subject: [PATCH 085/107] treewide: reformat files which need reformatting
 after

`treewide: replace stdenv.is with stdenv.hostPlatform.is`
---
 pkgs/applications/misc/blender/default.nix    |  13 +-
 .../misc/zathura/core/default.nix             |  27 +++--
 .../applications/networking/pjsip/default.nix |   4 +-
 pkgs/by-name/av/avbroot/package.nix           |   4 +-
 pkgs/by-name/ch/chatd/package.nix             |   4 +-
 pkgs/by-name/da/darklua/package.nix           |   4 +-
 pkgs/by-name/de/debase/package.nix            |   4 +-
 pkgs/by-name/do/dotter/package.nix            |   4 +-
 pkgs/by-name/fl/flameshot/package.nix         |   5 +-
 pkgs/by-name/gd/gdlv/package.nix              |   3 +-
 pkgs/by-name/ge/gepetto-viewer/package.nix    |  18 +--
 pkgs/by-name/ht/httptoolkit/package.nix       |   4 +-
 pkgs/by-name/ld/ld64/package.nix              |  17 +--
 .../ma/maa-assistant-arknights/package.nix    | 113 +++++++++---------
 pkgs/by-name/mi/mistral-rs/package.nix        |   7 +-
 pkgs/by-name/nt/ntpd-rs/package.nix           |   4 +-
 pkgs/by-name/op/ophcrack/package.nix          |   3 +-
 .../by-name/pr/protonmail-desktop/package.nix |   8 +-
 pkgs/by-name/py/pylyzer/package.nix           |   4 +-
 pkgs/by-name/ra/rathole/package.nix           |   8 +-
 pkgs/by-name/ru/rustlings/package.nix         |   4 +-
 pkgs/by-name/th/thonny/package.nix            |   4 +-
 pkgs/by-name/ty/typst-lsp/package.nix         |   4 +-
 pkgs/by-name/ya/yabai/package.nix             |   3 +-
 pkgs/by-name/zu/zutty/package.nix             |   4 +-
 pkgs/development/libraries/SDL2/default.nix   |   3 +-
 .../math/suitesparse-graphblas/default.nix    |   6 +-
 .../python-modules/behave/default.nix         |   4 +-
 .../python-modules/cherrypy/default.nix       |   4 +-
 .../cmsis-pack-manager/default.nix            |   4 +-
 .../python-modules/construct/default.nix      |   4 +-
 .../python-modules/devito/default.nix         |   4 +-
 .../python-modules/doit/default.nix           |  13 +-
 .../python-modules/hupper/default.nix         |   4 +-
 .../imagecodecs-lite/default.nix              |   3 +-
 .../python-modules/img2pdf/default.nix        |   4 +-
 .../python-modules/intake/default.nix         |   3 +-
 .../invisible-watermark/default.nix           |   3 +-
 .../python-modules/materialx/default.nix      |   4 +-
 .../python-modules/mmengine/default.nix       |   3 +-
 .../python-modules/modeled/default.nix        |   3 +-
 .../python-modules/openusd/default.nix        |   3 +-
 .../python-modules/pillow-simd/default.nix    |   3 +-
 .../python-modules/pyeclib/default.nix        |   3 +-
 .../pylibjpeg-openjpeg/default.nix            |   3 +-
 .../python-modules/pyqtwebengine/default.nix  |   4 +-
 .../python-modules/pyside6/default.nix        |   4 +-
 .../python-modules/pysvn/default.nix          |  21 ++--
 .../python-modules/pytest-flask/default.nix   |   4 +-
 .../python-modules/scipy/default.nix          |   4 +-
 .../python-modules/sleekxmpp/default.nix      |   3 +-
 .../python-modules/sourmash/default.nix       |   3 +-
 .../python-modules/spectral-cube/default.nix  |   4 +-
 .../python-modules/torch/default.nix          |   3 +-
 .../python-modules/twisted/default.nix        |   4 +-
 .../python-modules/watchdog/default.nix       |   4 +-
 .../python-modules/zigpy/default.nix          |  12 +-
 .../lua-language-server/default.nix           |   4 +-
 pkgs/development/tools/misc/ddd/default.nix   |   4 +-
 .../tools/misc/hydra-cli/default.nix          |   4 +-
 pkgs/development/tools/wasm-pack/default.nix  |   4 +-
 pkgs/os-specific/linux/rtl8821ce/default.nix  |   3 +-
 pkgs/servers/homepage-dashboard/default.nix   |   4 +-
 pkgs/tools/misc/goaccess/default.nix          |  11 +-
 pkgs/tools/security/chainsaw/default.nix      |   4 +-
 65 files changed, 298 insertions(+), 168 deletions(-)

diff --git a/pkgs/applications/misc/blender/default.nix b/pkgs/applications/misc/blender/default.nix
index 369a874896b1..3e8e2d2d9f28 100644
--- a/pkgs/applications/misc/blender/default.nix
+++ b/pkgs/applications/misc/blender/default.nix
@@ -84,8 +84,10 @@
 }:
 
 let
-  embreeSupport = (!stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) || stdenv.hostPlatform.isDarwin;
-  openImageDenoiseSupport = (!stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) || stdenv.hostPlatform.isDarwin;
+  embreeSupport =
+    (!stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) || stdenv.hostPlatform.isDarwin;
+  openImageDenoiseSupport =
+    (!stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) || stdenv.hostPlatform.isDarwin;
   openUsdSupport = !stdenv.hostPlatform.isDarwin;
 
   python3 = python3Packages.python;
@@ -328,7 +330,12 @@ stdenv.mkDerivation (finalAttrs: {
 
   blenderExecutable =
     placeholder "out"
-    + (if stdenv.hostPlatform.isDarwin then "/Applications/Blender.app/Contents/MacOS/Blender" else "/bin/blender");
+    + (
+      if stdenv.hostPlatform.isDarwin then
+        "/Applications/Blender.app/Contents/MacOS/Blender"
+      else
+        "/bin/blender"
+    );
 
   postInstall =
     lib.optionalString stdenv.hostPlatform.isDarwin ''
diff --git a/pkgs/applications/misc/zathura/core/default.nix b/pkgs/applications/misc/zathura/core/default.nix
index 4aff5303ee18..0ed21d76888e 100644
--- a/pkgs/applications/misc/zathura/core/default.nix
+++ b/pkgs/applications/misc/zathura/core/default.nix
@@ -79,18 +79,21 @@ stdenv.mkDerivation (finalAttrs: {
     appstream-glib
   ];
 
-  buildInputs = [
-    gtk
-    girara
-    libintl
-    sqlite
-    glib
-    file
-    librsvg
-    check
-    json-glib
-    texlive.bin.core
-  ] ++ lib.optional stdenv.hostPlatform.isLinux libseccomp ++ lib.optional stdenv.hostPlatform.isDarwin gtk-mac-integration;
+  buildInputs =
+    [
+      gtk
+      girara
+      libintl
+      sqlite
+      glib
+      file
+      librsvg
+      check
+      json-glib
+      texlive.bin.core
+    ]
+    ++ lib.optional stdenv.hostPlatform.isLinux libseccomp
+    ++ lib.optional stdenv.hostPlatform.isDarwin gtk-mac-integration;
 
   doCheck = !stdenv.hostPlatform.isDarwin;
 
diff --git a/pkgs/applications/networking/pjsip/default.nix b/pkgs/applications/networking/pjsip/default.nix
index 3cdfe57c8a5f..047e86036d08 100644
--- a/pkgs/applications/networking/pjsip/default.nix
+++ b/pkgs/applications/networking/pjsip/default.nix
@@ -59,7 +59,9 @@ stdenv.mkDerivation (finalAttrs: {
 
   env =
     lib.optionalAttrs stdenv.cc.isClang { CXXFLAGS = "-std=c++11"; }
-    // lib.optionalAttrs stdenv.hostPlatform.isDarwin { NIX_CFLAGS_LINK = "-headerpad_max_install_names"; };
+    // lib.optionalAttrs stdenv.hostPlatform.isDarwin {
+      NIX_CFLAGS_LINK = "-headerpad_max_install_names";
+    };
 
   preConfigure = ''
     export LD=$CC
diff --git a/pkgs/by-name/av/avbroot/package.nix b/pkgs/by-name/av/avbroot/package.nix
index cc7fe1494e65..249ed14233ee 100644
--- a/pkgs/by-name/av/avbroot/package.nix
+++ b/pkgs/by-name/av/avbroot/package.nix
@@ -33,7 +33,9 @@ rustPlatform.buildRustPackage rec {
     protobuf
   ];
 
-  buildInputs = [ bzip2 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = [
+    bzip2
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   meta = {
     description = "Sign (and root) Android A/B OTAs with custom keys while preserving Android Verified Boot";
diff --git a/pkgs/by-name/ch/chatd/package.nix b/pkgs/by-name/ch/chatd/package.nix
index 1653b80e26f7..ad8a222ac89a 100644
--- a/pkgs/by-name/ch/chatd/package.nix
+++ b/pkgs/by-name/ch/chatd/package.nix
@@ -67,7 +67,9 @@ buildNpmPackage rec {
     find $out/share/chatd/node_modules -name '*.exe' -or -name '*.dll' -or -name '*.pdb' -delete
     rm -rf ${
       lib.concatStringsSep " " (
-        (lib.optional (!stdenv.hostPlatform.isx86_64) "$out/share/chatd/node_modules/onnxruntime-node/bin/napi-v3/*/x64")
+        (lib.optional (
+          !stdenv.hostPlatform.isx86_64
+        ) "$out/share/chatd/node_modules/onnxruntime-node/bin/napi-v3/*/x64")
         ++ (lib.optional (
           !stdenv.hostPlatform.isAarch64
         ) "$out/share/chatd/node_modules/onnxruntime-node/bin/napi-v3/*/arm64")
diff --git a/pkgs/by-name/da/darklua/package.nix b/pkgs/by-name/da/darklua/package.nix
index bf8576961b8b..fd31987ff364 100644
--- a/pkgs/by-name/da/darklua/package.nix
+++ b/pkgs/by-name/da/darklua/package.nix
@@ -19,7 +19,9 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-fYx+SQdQMnNSygr0/Y4zEPtqfQPZYmQUq3ndi1HlXuE=";
 
-  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
+    darwin.apple_sdk.frameworks.CoreServices
+  ];
 
   # error: linker `aarch64-linux-gnu-gcc` not found
   postPatch = ''
diff --git a/pkgs/by-name/de/debase/package.nix b/pkgs/by-name/de/debase/package.nix
index a2761056f116..91061e5ad2e9 100644
--- a/pkgs/by-name/de/debase/package.nix
+++ b/pkgs/by-name/de/debase/package.nix
@@ -57,7 +57,9 @@ stdenv.mkDerivation rec {
 
   installPhase = ''
     runHook preInstall
-    install -Dm755 build-${if stdenv.hostPlatform.isDarwin then "mac" else "linux"}/release/debase $out/bin/debase
+    install -Dm755 build-${
+      if stdenv.hostPlatform.isDarwin then "mac" else "linux"
+    }/release/debase $out/bin/debase
     runHook postInstall
   '';
 
diff --git a/pkgs/by-name/do/dotter/package.nix b/pkgs/by-name/do/dotter/package.nix
index e2897b83a348..68d55ffba40d 100644
--- a/pkgs/by-name/do/dotter/package.nix
+++ b/pkgs/by-name/do/dotter/package.nix
@@ -22,7 +22,9 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-LEOORHD0j+HVl/fB9Q2xVZ2AxZKsPE5SeOS1ZsKwTSo=";
 
-  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreServices ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
+    darwin.apple_sdk.frameworks.CoreServices
+  ];
 
   nativeCheckInputs = [
     which
diff --git a/pkgs/by-name/fl/flameshot/package.nix b/pkgs/by-name/fl/flameshot/package.nix
index 3c60703a3a36..e89d27abe395 100644
--- a/pkgs/by-name/fl/flameshot/package.nix
+++ b/pkgs/by-name/fl/flameshot/package.nix
@@ -106,7 +106,10 @@ stdenv'.mkDerivation {
   postFixup =
     let
       binary =
-        if stdenv.hostPlatform.isDarwin then "Applications/flameshot.app/Contents/MacOS/flameshot" else "bin/flameshot";
+        if stdenv.hostPlatform.isDarwin then
+          "Applications/flameshot.app/Contents/MacOS/flameshot"
+        else
+          "bin/flameshot";
     in
     ''
       wrapProgram $out/${binary} \
diff --git a/pkgs/by-name/gd/gdlv/package.nix b/pkgs/by-name/gd/gdlv/package.nix
index 59423a71ee5a..3c7900c80a99 100644
--- a/pkgs/by-name/gd/gdlv/package.nix
+++ b/pkgs/by-name/gd/gdlv/package.nix
@@ -23,7 +23,8 @@ buildGoModule rec {
   subPackages = ".";
 
   preBuild =
-    lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11.0")
+    lib.optionalString
+      (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "11.0")
       ''
         export MACOSX_DEPLOYMENT_TARGET=10.15
       '';
diff --git a/pkgs/by-name/ge/gepetto-viewer/package.nix b/pkgs/by-name/ge/gepetto-viewer/package.nix
index da5429416d60..8e87bb3b1891 100644
--- a/pkgs/by-name/ge/gepetto-viewer/package.nix
+++ b/pkgs/by-name/ge/gepetto-viewer/package.nix
@@ -61,13 +61,17 @@ let
       libsForQt5.qtbase
     ];
 
-    nativeBuildInputs = [
-      cmake
-      doxygen
-      libsForQt5.wrapQtAppsHook
-      pkg-config
-      python3Packages.python
-    ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ darwin.autoSignDarwinBinariesHook ];
+    nativeBuildInputs =
+      [
+        cmake
+        doxygen
+        libsForQt5.wrapQtAppsHook
+        pkg-config
+        python3Packages.python
+      ]
+      ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
+        darwin.autoSignDarwinBinariesHook
+      ];
 
     propagatedBuildInputs = [
       jrl-cmakemodules
diff --git a/pkgs/by-name/ht/httptoolkit/package.nix b/pkgs/by-name/ht/httptoolkit/package.nix
index 3acc04031f88..5b2acf02bb0d 100644
--- a/pkgs/by-name/ht/httptoolkit/package.nix
+++ b/pkgs/by-name/ht/httptoolkit/package.nix
@@ -29,7 +29,9 @@ buildNpmPackage rec {
     CSC_IDENTITY_AUTO_DISCOVERY = "false";
   };
 
-  nativeBuildInputs = [ makeWrapper ] ++ lib.optionals stdenv.hostPlatform.isLinux [ copyDesktopItems ];
+  nativeBuildInputs = [
+    makeWrapper
+  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ copyDesktopItems ];
 
   npmBuildScript = "build:src";
 
diff --git a/pkgs/by-name/ld/ld64/package.nix b/pkgs/by-name/ld/ld64/package.nix
index 4c9ed4c5f340..1ca229150632 100644
--- a/pkgs/by-name/ld/ld64/package.nix
+++ b/pkgs/by-name/ld/ld64/package.nix
@@ -142,13 +142,16 @@ stdenv.mkDerivation (finalAttrs: {
     python3
   ];
 
-  buildInputs = [
-    libtapi
-    llvm
-    libunwind
-    openssl
-    xar
-  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.dyld ] ++ lib.optionals stdenv.hostPlatform.isLinux [ libdispatch ];
+  buildInputs =
+    [
+      libtapi
+      llvm
+      libunwind
+      openssl
+      xar
+    ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.dyld ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ libdispatch ];
 
   # Note for overrides: ld64 cannot be built as a debug build because of UB in its iteration implementations,
   # which trigger libc++ debug assertions due to trying to take the address of the first element of an emtpy vector.
diff --git a/pkgs/by-name/ma/maa-assistant-arknights/package.nix b/pkgs/by-name/ma/maa-assistant-arknights/package.nix
index 7bb296ab611b..32d43f3d05b1 100644
--- a/pkgs/by-name/ma/maa-assistant-arknights/package.nix
+++ b/pkgs/by-name/ma/maa-assistant-arknights/package.nix
@@ -20,70 +20,71 @@ let
   sources = lib.importJSON ./pin.json;
 in
 # https://github.com/NixOS/nixpkgs/issues/314160
-(if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv).mkDerivation (finalAttr: {
-  pname = "maa-assistant-arknights" + lib.optionalString isBeta "-beta";
-  version = if isBeta then sources.beta.version else sources.stable.version;
+(if stdenv.hostPlatform.isDarwin then overrideSDK stdenv "11.0" else stdenv).mkDerivation
+  (finalAttr: {
+    pname = "maa-assistant-arknights" + lib.optionalString isBeta "-beta";
+    version = if isBeta then sources.beta.version else sources.stable.version;
 
-  src = fetchFromGitHub {
-    owner = "MaaAssistantArknights";
-    repo = "MaaAssistantArknights";
-    rev = "v${finalAttr.version}";
-    hash = if isBeta then sources.beta.hash else sources.stable.hash;
-  };
+    src = fetchFromGitHub {
+      owner = "MaaAssistantArknights";
+      repo = "MaaAssistantArknights";
+      rev = "v${finalAttr.version}";
+      hash = if isBeta then sources.beta.hash else sources.stable.hash;
+    };
 
-  nativeBuildInputs = [
-    asio
-    cmake
-    fastdeploy.cmake
-  ] ++ lib.optionals cudaSupport [ cudaPackages.cuda_nvcc ];
+    nativeBuildInputs = [
+      asio
+      cmake
+      fastdeploy.cmake
+    ] ++ lib.optionals cudaSupport [ cudaPackages.cuda_nvcc ];
 
-  buildInputs =
-    [
-      fastdeploy
-      libcpr
-      onnxruntime
-      opencv
-    ]
-    ++ lib.optionals cudaSupport (
-      with cudaPackages;
+    buildInputs =
       [
-        cuda_cccl # cub/cub.cuh
-        libcublas # cublas_v2.h
-        libcurand # curand.h
-        libcusparse # cusparse.h
-        libcufft # cufft.h
-        cudnn # cudnn.h
-        cuda_cudart
+        fastdeploy
+        libcpr
+        onnxruntime
+        opencv
       ]
-    );
+      ++ lib.optionals cudaSupport (
+        with cudaPackages;
+        [
+          cuda_cccl # cub/cub.cuh
+          libcublas # cublas_v2.h
+          libcurand # curand.h
+          libcusparse # cusparse.h
+          libcufft # cufft.h
+          cudnn # cudnn.h
+          cuda_cudart
+        ]
+      );
 
-  cmakeBuildType = "None";
+    cmakeBuildType = "None";
 
-  cmakeFlags = [
-    (lib.cmakeBool "BUILD_SHARED_LIBS" true)
-    (lib.cmakeBool "INSTALL_FLATTEN" false)
-    (lib.cmakeBool "INSTALL_PYTHON" true)
-    (lib.cmakeBool "INSTALL_RESOURCE" true)
-    (lib.cmakeBool "USE_MAADEPS" false)
-    (lib.cmakeFeature "MAA_VERSION" "v${finalAttr.version}")
-  ];
+    cmakeFlags = [
+      (lib.cmakeBool "BUILD_SHARED_LIBS" true)
+      (lib.cmakeBool "INSTALL_FLATTEN" false)
+      (lib.cmakeBool "INSTALL_PYTHON" true)
+      (lib.cmakeBool "INSTALL_RESOURCE" true)
+      (lib.cmakeBool "USE_MAADEPS" false)
+      (lib.cmakeFeature "MAA_VERSION" "v${finalAttr.version}")
+    ];
 
-  passthru.updateScript = ./update.sh;
+    passthru.updateScript = ./update.sh;
 
-  postPatch = ''
-    cp -v ${fastdeploy.cmake}/Findonnxruntime.cmake cmake/
-  '';
+    postPatch = ''
+      cp -v ${fastdeploy.cmake}/Findonnxruntime.cmake cmake/
+    '';
 
-  postInstall = ''
-    mkdir -p $out/share/${finalAttr.pname}
-    mv $out/{Python,resource} $out/share/${finalAttr.pname}
-  '';
+    postInstall = ''
+      mkdir -p $out/share/${finalAttr.pname}
+      mv $out/{Python,resource} $out/share/${finalAttr.pname}
+    '';
 
-  meta = with lib; {
-    description = "Arknights assistant";
-    homepage = "https://github.com/MaaAssistantArknights/MaaAssistantArknights";
-    license = licenses.agpl3Only;
-    maintainers = with maintainers; [ Cryolitia ];
-    platforms = platforms.linux ++ platforms.darwin;
-  };
-})
+    meta = with lib; {
+      description = "Arknights assistant";
+      homepage = "https://github.com/MaaAssistantArknights/MaaAssistantArknights";
+      license = licenses.agpl3Only;
+      maintainers = with maintainers; [ Cryolitia ];
+      platforms = platforms.linux ++ platforms.darwin;
+    };
+  })
diff --git a/pkgs/by-name/mi/mistral-rs/package.nix b/pkgs/by-name/mi/mistral-rs/package.nix
index 35db87eb173a..26964c848ea2 100644
--- a/pkgs/by-name/mi/mistral-rs/package.nix
+++ b/pkgs/by-name/mi/mistral-rs/package.nix
@@ -63,7 +63,8 @@ let
 
   metalSupport =
     assert accelIsValid;
-    (acceleration == "metal") || (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 && (acceleration == null));
+    (acceleration == "metal")
+    || (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 && (acceleration == null));
 
   darwinBuildInputs =
     with darwin.apple_sdk.frameworks;
@@ -186,7 +187,9 @@ rustPlatform.buildRustPackage rec {
       withMkl = lib.optionalAttrs (stdenv.hostPlatform == "x86_64-linux") (
         mistral-rs.override { acceleration = "mkl"; }
       );
-      withCuda = lib.optionalAttrs stdenv.hostPlatform.isLinux (mistral-rs.override { acceleration = "cuda"; });
+      withCuda = lib.optionalAttrs stdenv.hostPlatform.isLinux (
+        mistral-rs.override { acceleration = "cuda"; }
+      );
       withMetal = lib.optionalAttrs (stdenv.hostPlatform == "aarch64-darwin") (
         mistral-rs.override { acceleration = "metal"; }
       );
diff --git a/pkgs/by-name/nt/ntpd-rs/package.nix b/pkgs/by-name/nt/ntpd-rs/package.nix
index bc385466c8eb..df3089013d86 100644
--- a/pkgs/by-name/nt/ntpd-rs/package.nix
+++ b/pkgs/by-name/nt/ntpd-rs/package.nix
@@ -25,7 +25,9 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-9HLbGC6j0Wq/lG//CeEAfnYzlGG14CnDpmluL1moHWQ=";
 
-  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk_11_0.frameworks.Security ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
+    darwin.apple_sdk_11_0.frameworks.Security
+  ];
   nativeBuildInputs = [
     pandoc
     installShellFiles
diff --git a/pkgs/by-name/op/ophcrack/package.nix b/pkgs/by-name/op/ophcrack/package.nix
index 1fbf6c180545..bee8b7dd76f6 100644
--- a/pkgs/by-name/op/ophcrack/package.nix
+++ b/pkgs/by-name/op/ophcrack/package.nix
@@ -33,7 +33,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config ] ++ lib.optional enableGui libsForQt5.wrapQtAppsHook;
   buildInputs =
     [ openssl ]
-    ++ (if enableGui then [ libsForQt5.qtcharts ] else [ expat ]) ++ lib.optional stdenv.hostPlatform.isDarwin expat;
+    ++ (if enableGui then [ libsForQt5.qtcharts ] else [ expat ])
+    ++ lib.optional stdenv.hostPlatform.isDarwin expat;
 
   configureFlags =
     [ "--with-libssl" ]
diff --git a/pkgs/by-name/pr/protonmail-desktop/package.nix b/pkgs/by-name/pr/protonmail-desktop/package.nix
index a5dd3ce319f8..81866b4fd3a1 100644
--- a/pkgs/by-name/pr/protonmail-desktop/package.nix
+++ b/pkgs/by-name/pr/protonmail-desktop/package.nix
@@ -43,9 +43,11 @@ stdenv.mkDerivation rec {
   dontConfigure = true;
   dontBuild = true;
 
-  nativeBuildInputs = [
-    makeWrapper
-  ] ++ lib.optional stdenv.hostPlatform.isLinux dpkg ++ lib.optional stdenv.hostPlatform.isDarwin unzip;
+  nativeBuildInputs =
+    [
+      makeWrapper
+    ]
+    ++ lib.optional stdenv.hostPlatform.isLinux dpkg ++ lib.optional stdenv.hostPlatform.isDarwin unzip;
 
   installPhase =
     let
diff --git a/pkgs/by-name/py/pylyzer/package.nix b/pkgs/by-name/py/pylyzer/package.nix
index 14b6608113d3..057ef5b91f32 100644
--- a/pkgs/by-name/py/pylyzer/package.nix
+++ b/pkgs/by-name/py/pylyzer/package.nix
@@ -38,7 +38,9 @@ rustPlatform.buildRustPackage rec {
     makeWrapper
   ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ (writeScriptBin "diskutil" "") ];
 
-  buildInputs = [ python3 ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = [
+    python3
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   preBuild = ''
     export HOME=$TMPDIR
diff --git a/pkgs/by-name/ra/rathole/package.nix b/pkgs/by-name/ra/rathole/package.nix
index 51bc1cfedd55..19754ba11cdb 100644
--- a/pkgs/by-name/ra/rathole/package.nix
+++ b/pkgs/by-name/ra/rathole/package.nix
@@ -24,9 +24,11 @@ rustPlatform.buildRustPackage {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [
-    openssl
-  ] ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ CoreServices ]);
+  buildInputs =
+    [
+      openssl
+    ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ CoreServices ]);
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/by-name/ru/rustlings/package.nix b/pkgs/by-name/ru/rustlings/package.nix
index 2d51df275234..2d05eee496f1 100644
--- a/pkgs/by-name/ru/rustlings/package.nix
+++ b/pkgs/by-name/ru/rustlings/package.nix
@@ -36,7 +36,9 @@ rustPlatform.buildRustPackage {
     makeWrapper
   ];
 
-  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [ CoreServices ]);
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin (
+    with darwin.apple_sdk.frameworks; [ CoreServices ]
+  );
 
   postFixup = ''
     wrapProgram $out/bin/rustlings --suffix PATH : ${
diff --git a/pkgs/by-name/th/thonny/package.nix b/pkgs/by-name/th/thonny/package.nix
index 445a7954dfdc..f230b24d582a 100644
--- a/pkgs/by-name/th/thonny/package.nix
+++ b/pkgs/by-name/th/thonny/package.nix
@@ -21,7 +21,9 @@ buildPythonApplication rec {
     hash = "sha256-/ms2RESnV3bsJpK1zYYLHNUu1FtA6PntaseTbKMfUMc=";
   };
 
-  nativeBuildInputs = [ copyDesktopItems ] ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
+  nativeBuildInputs = [
+    copyDesktopItems
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin desktopToDarwinBundle;
 
   desktopItems = [
     (makeDesktopItem {
diff --git a/pkgs/by-name/ty/typst-lsp/package.nix b/pkgs/by-name/ty/typst-lsp/package.nix
index bb4d0b12f39b..047be6e535f0 100644
--- a/pkgs/by-name/ty/typst-lsp/package.nix
+++ b/pkgs/by-name/ty/typst-lsp/package.nix
@@ -39,7 +39,9 @@ rustPlatform.buildRustPackage rec {
     ln -s ${./Cargo.lock} Cargo.lock
   '';
 
-  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
+    darwin.apple_sdk.frameworks.SystemConfiguration
+  ];
 
   checkFlags =
     [
diff --git a/pkgs/by-name/ya/yabai/package.nix b/pkgs/by-name/ya/yabai/package.nix
index 863b3b4fafad..22f21c191000 100644
--- a/pkgs/by-name/ya/yabai/package.nix
+++ b/pkgs/by-name/ya/yabai/package.nix
@@ -146,6 +146,7 @@ stdenv'.mkDerivation (finalAttrs: {
     ];
     sourceProvenance =
       with lib.sourceTypes;
-      lib.optionals stdenv.hostPlatform.isx86_64 [ fromSource ] ++ lib.optionals stdenv.hostPlatform.isAarch64 [ binaryNativeCode ];
+      lib.optionals stdenv.hostPlatform.isx86_64 [ fromSource ]
+      ++ lib.optionals stdenv.hostPlatform.isAarch64 [ binaryNativeCode ];
   };
 })
diff --git a/pkgs/by-name/zu/zutty/package.nix b/pkgs/by-name/zu/zutty/package.nix
index bca3a376467f..4c493483df57 100644
--- a/pkgs/by-name/zu/zutty/package.nix
+++ b/pkgs/by-name/zu/zutty/package.nix
@@ -46,7 +46,9 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   passthru = {
-    tests = lib.optionalAttrs stdenv.hostPlatform.isLinux { default = nixosTests.terminal-emulators.zutty; };
+    tests = lib.optionalAttrs stdenv.hostPlatform.isLinux {
+      default = nixosTests.terminal-emulators.zutty;
+    };
   };
 
   meta = {
diff --git a/pkgs/development/libraries/SDL2/default.nix b/pkgs/development/libraries/SDL2/default.nix
index bc7ffd7b991b..9e319154717b 100644
--- a/pkgs/development/libraries/SDL2/default.nix
+++ b/pkgs/development/libraries/SDL2/default.nix
@@ -39,7 +39,8 @@
   libdecor,
   pipewireSupport ? stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid,
   pipewire, # NOTE: must be built with SDL2 without pipewire support
-  pulseaudioSupport ? config.pulseaudio or stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid,
+  pulseaudioSupport ?
+    config.pulseaudio or stdenv.hostPlatform.isLinux && !stdenv.hostPlatform.isAndroid,
   libpulseaudio,
   AudioUnit,
   Cocoa,
diff --git a/pkgs/development/libraries/science/math/suitesparse-graphblas/default.nix b/pkgs/development/libraries/science/math/suitesparse-graphblas/default.nix
index f275eed52b07..c0b6561e0031 100644
--- a/pkgs/development/libraries/science/math/suitesparse-graphblas/default.nix
+++ b/pkgs/development/libraries/science/math/suitesparse-graphblas/default.nix
@@ -31,7 +31,11 @@ stdenv.mkDerivation rec {
     export HOME=$(mktemp -d)
   '';
 
-  cmakeFlags = [ (lib.cmakeBool "GRAPHBLAS_USE_JIT" (!(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64))) ];
+  cmakeFlags = [
+    (lib.cmakeBool "GRAPHBLAS_USE_JIT" (
+      !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64)
+    ))
+  ];
 
   meta = with lib; {
     description = "Graph algorithms in the language of linear algebra";
diff --git a/pkgs/development/python-modules/behave/default.nix b/pkgs/development/python-modules/behave/default.nix
index 60ba28069ab0..30f6c81c851d 100644
--- a/pkgs/development/python-modules/behave/default.nix
+++ b/pkgs/development/python-modules/behave/default.nix
@@ -60,7 +60,9 @@ buildPythonPackage rec {
 
   # timing-based test flaky on Darwin
   # https://github.com/NixOS/nixpkgs/pull/97737#issuecomment-691489824
-  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [ "test_step_decorator_async_run_until_complete" ];
+  disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
+    "test_step_decorator_async_run_until_complete"
+  ];
 
   postCheck = ''
     ${python.interpreter} bin/behave -f progress3 --stop --tags='~@xfail' features/
diff --git a/pkgs/development/python-modules/cherrypy/default.nix b/pkgs/development/python-modules/cherrypy/default.nix
index 1b0574d05726..c9a63cc21505 100644
--- a/pkgs/development/python-modules/cherrypy/default.nix
+++ b/pkgs/development/python-modules/cherrypy/default.nix
@@ -103,7 +103,9 @@ buildPythonPackage rec {
     ]
     ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_block" ];
 
-  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [ "cherrypy/test/test_config_server.py" ];
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
+    "cherrypy/test/test_config_server.py"
+  ];
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/development/python-modules/cmsis-pack-manager/default.nix b/pkgs/development/python-modules/cmsis-pack-manager/default.nix
index 554e9516d53f..c1ce182aa6c5 100644
--- a/pkgs/development/python-modules/cmsis-pack-manager/default.nix
+++ b/pkgs/development/python-modules/cmsis-pack-manager/default.nix
@@ -37,7 +37,9 @@ buildPythonPackage rec {
     rustPlatform.maturinBuildHook
   ];
   propagatedNativeBuildInputs = [ cffi ];
-  buildInputs = [ libiconv ] ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
+  buildInputs = [
+    libiconv
+  ] ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security;
   propagatedBuildInputs = [
     appdirs
     pyyaml
diff --git a/pkgs/development/python-modules/construct/default.nix b/pkgs/development/python-modules/construct/default.nix
index d21dd11e010a..daad048634b3 100644
--- a/pkgs/development/python-modules/construct/default.nix
+++ b/pkgs/development/python-modules/construct/default.nix
@@ -51,7 +51,9 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "construct" ];
 
-  disabledTests = [ "test_benchmarks" ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_multiprocessing" ];
+  disabledTests = [
+    "test_benchmarks"
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ "test_multiprocessing" ];
 
   meta = with lib; {
     description = "Powerful declarative parser (and builder) for binary data";
diff --git a/pkgs/development/python-modules/devito/default.nix b/pkgs/development/python-modules/devito/default.nix
index 195c77b97864..47340bd1325c 100644
--- a/pkgs/development/python-modules/devito/default.nix
+++ b/pkgs/development/python-modules/devito/default.nix
@@ -127,7 +127,9 @@ buildPythonPackage rec {
       "tests/test_dse.py"
       "tests/test_gradient.py"
     ]
-    ++ lib.optionals ((stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin) [ "tests/test_dle.py" ];
+    ++ lib.optionals (
+      (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin
+    ) [ "tests/test_dle.py" ];
 
   pythonImportsCheck = [ "devito" ];
 
diff --git a/pkgs/development/python-modules/doit/default.nix b/pkgs/development/python-modules/doit/default.nix
index 5840b71b18f7..188fb1ddbb3b 100644
--- a/pkgs/development/python-modules/doit/default.nix
+++ b/pkgs/development/python-modules/doit/default.nix
@@ -30,11 +30,14 @@ let
       hash = "sha256-cdB8zJUUyyL+WdmJmVd2ZeqrV+FvZE0EM2rgtLriNLw=";
     };
 
-    propagatedBuildInputs = [
-      cloudpickle
-      importlib-metadata
-      toml
-    ] ++ lib.optional stdenv.hostPlatform.isLinux pyinotify ++ lib.optional stdenv.hostPlatform.isDarwin macfsevents;
+    propagatedBuildInputs =
+      [
+        cloudpickle
+        importlib-metadata
+        toml
+      ]
+      ++ lib.optional stdenv.hostPlatform.isLinux pyinotify
+      ++ lib.optional stdenv.hostPlatform.isDarwin macfsevents;
 
     nativeCheckInputs = [
       configclass
diff --git a/pkgs/development/python-modules/hupper/default.nix b/pkgs/development/python-modules/hupper/default.nix
index ec9ccf3e65c8..0c69762ec8f1 100644
--- a/pkgs/development/python-modules/hupper/default.nix
+++ b/pkgs/development/python-modules/hupper/default.nix
@@ -19,7 +19,9 @@ buildPythonPackage rec {
 
   # FIXME: watchdog dependency is disabled on Darwin because of #31865, which causes very silent
   # segfaults in the testsuite that end up failing the tests in a background thread (in myapp)
-  nativeCheckInputs = [ pytestCheckHook ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ watchdog ];
+  nativeCheckInputs = [
+    pytestCheckHook
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [ watchdog ];
 
   disabledTestPaths = [
     # Doesn't work with an exported home, RuntimeError: timeout waiting for change to file=/build/tmpgfn145cx
diff --git a/pkgs/development/python-modules/imagecodecs-lite/default.nix b/pkgs/development/python-modules/imagecodecs-lite/default.nix
index 5bca6d350d59..b21b80c7c694 100644
--- a/pkgs/development/python-modules/imagecodecs-lite/default.nix
+++ b/pkgs/development/python-modules/imagecodecs-lite/default.nix
@@ -29,7 +29,8 @@ buildPythonPackage rec {
   '';
 
   meta = with lib; {
-    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
+    broken =
+      (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
     description = "Block-oriented, in-memory buffer transformation, compression, and decompression functions";
     homepage = "https://www.lfd.uci.edu/~gohlke/";
     maintainers = [ maintainers.tbenst ];
diff --git a/pkgs/development/python-modules/img2pdf/default.nix b/pkgs/development/python-modules/img2pdf/default.nix
index afb95dafebd6..62efb51697af 100644
--- a/pkgs/development/python-modules/img2pdf/default.nix
+++ b/pkgs/development/python-modules/img2pdf/default.nix
@@ -65,7 +65,9 @@ buildPythonPackage rec {
 
   # FIXME: Only add "sRGB Profile.icc" to __impureHostDeps once
   # https://github.com/NixOS/nix/issues/9301 is fixed.
-  __impureHostDeps = lib.optionals stdenv.hostPlatform.isDarwin [ "/System/Library/ColorSync/Profiles" ];
+  __impureHostDeps = lib.optionals stdenv.hostPlatform.isDarwin [
+    "/System/Library/ColorSync/Profiles"
+  ];
 
   nativeCheckInputs = [
     exiftool
diff --git a/pkgs/development/python-modules/intake/default.nix b/pkgs/development/python-modules/intake/default.nix
index 2b1fefe90750..ba078d1f90c3 100644
--- a/pkgs/development/python-modules/intake/default.nix
+++ b/pkgs/development/python-modules/intake/default.nix
@@ -124,7 +124,8 @@ buildPythonPackage rec {
       # Timing-based, flaky on darwin and possibly others
       "test_idle_timer"
     ]
-    ++ lib.optionals (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13")
+    ++ lib.optionals
+      (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13")
       [
         # Flaky with older low-res mtime on darwin < 10.13 (#143987)
         "test_second_load_timestamp"
diff --git a/pkgs/development/python-modules/invisible-watermark/default.nix b/pkgs/development/python-modules/invisible-watermark/default.nix
index 67652922d62a..445774979df7 100644
--- a/pkgs/development/python-modules/invisible-watermark/default.nix
+++ b/pkgs/development/python-modules/invisible-watermark/default.nix
@@ -72,7 +72,8 @@ buildPythonPackage rec {
         let
           testName = "${if withOnnx then "withOnnx" else "withoutOnnx"}-${method}";
           # This test fails in the sandbox on aarch64-linux, see https://github.com/microsoft/onnxruntime/issues/10038
-          skipTest = stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64 && withOnnx && method == "rivaGan";
+          skipTest =
+            stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64 && withOnnx && method == "rivaGan";
         in
         lib.optionalAttrs (!skipTest) {
           "${testName}" = callPackage ./tests/cli.nix {
diff --git a/pkgs/development/python-modules/materialx/default.nix b/pkgs/development/python-modules/materialx/default.nix
index 7b22621cdb8a..0ebcc212617b 100644
--- a/pkgs/development/python-modules/materialx/default.nix
+++ b/pkgs/development/python-modules/materialx/default.nix
@@ -54,7 +54,9 @@ buildPythonPackage rec {
     (lib.cmakeBool "MATERIALX_BUILD_OIIO" true)
     (lib.cmakeBool "MATERIALX_BUILD_PYTHON" true)
     # don't build MSL shader back-end on x86_x64-darwin, as it requires a newer SDK with metal support
-    (lib.cmakeBool "MATERIALX_BUILD_GEN_MSL" (stdenv.hostPlatform.isLinux || (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin)))
+    (lib.cmakeBool "MATERIALX_BUILD_GEN_MSL" (
+      stdenv.hostPlatform.isLinux || (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin)
+    ))
   ];
 
   pythonImportsCheck = [ "MaterialX" ];
diff --git a/pkgs/development/python-modules/mmengine/default.nix b/pkgs/development/python-modules/mmengine/default.nix
index e8efda866dac..7191e048a04d 100644
--- a/pkgs/development/python-modules/mmengine/default.nix
+++ b/pkgs/development/python-modules/mmengine/default.nix
@@ -114,6 +114,7 @@ buildPythonPackage rec {
     changelog = "https://github.com/open-mmlab/mmengine/releases/tag/v${version}";
     license = with licenses; [ asl20 ];
     maintainers = with maintainers; [ rxiao ];
-    broken = stdenv.hostPlatform.isDarwin || (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
+    broken =
+      stdenv.hostPlatform.isDarwin || (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
   };
 }
diff --git a/pkgs/development/python-modules/modeled/default.nix b/pkgs/development/python-modules/modeled/default.nix
index 07127184d216..43459fc5a598 100644
--- a/pkgs/development/python-modules/modeled/default.nix
+++ b/pkgs/development/python-modules/modeled/default.nix
@@ -34,7 +34,8 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "modeled" ];
 
   meta = with lib; {
-    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
+    broken =
+      (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
     description = "Universal data modeling for Python";
     homepage = "https://github.com/modeled/modeled";
     license = licenses.lgpl3Only;
diff --git a/pkgs/development/python-modules/openusd/default.nix b/pkgs/development/python-modules/openusd/default.nix
index 0849ce8dfd7a..7315865b75c2 100644
--- a/pkgs/development/python-modules/openusd/default.nix
+++ b/pkgs/development/python-modules/openusd/default.nix
@@ -60,7 +60,8 @@ buildPythonPackage rec {
     hash = "sha256-akwLIB5YUbnDiaQXX/K5YLXzWlTYWZG51dtxbSFxPt0=";
   };
 
-  stdenv = if python.stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else python.stdenv;
+  stdenv =
+    if python.stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else python.stdenv;
 
   outputs = [ "out" ] ++ lib.optional withDocs "doc";
 
diff --git a/pkgs/development/python-modules/pillow-simd/default.nix b/pkgs/development/python-modules/pillow-simd/default.nix
index 79b046f50cc6..2d3551d171e9 100644
--- a/pkgs/development/python-modules/pillow-simd/default.nix
+++ b/pkgs/development/python-modules/pillow-simd/default.nix
@@ -44,7 +44,8 @@ import ../pillow/generic.nix (
     };
 
     meta = with lib; {
-      broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
+      broken =
+        (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
       homepage = "https://python-pillow.github.io/pillow-perf/";
       description = "Friendly PIL fork - SIMD version";
       longDescription = ''
diff --git a/pkgs/development/python-modules/pyeclib/default.nix b/pkgs/development/python-modules/pyeclib/default.nix
index bda40cbeb8d3..d1fec7764784 100644
--- a/pkgs/development/python-modules/pyeclib/default.nix
+++ b/pkgs/development/python-modules/pyeclib/default.nix
@@ -39,7 +39,8 @@ buildPythonPackage rec {
 
   preBuild =
     let
-      ldLibraryPathEnvName = if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
+      ldLibraryPathEnvName =
+        if stdenv.hostPlatform.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
     in
     ''
       # required for the custom _find_library function in setup.py
diff --git a/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix b/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix
index 18ee261ff694..e7b1fa52a871 100644
--- a/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix
+++ b/pkgs/development/python-modules/pylibjpeg-openjpeg/default.nix
@@ -71,6 +71,7 @@ buildPythonPackage rec {
     maintainers = with lib.maintainers; [ bcdarwin ];
     # x86-linux: test_encode.py::TestEncodeBuffer failures
     # darwin: numerous test failures, seemingly due to issues setting up test data
-    broken = (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) || stdenv.hostPlatform.isDarwin;
+    broken =
+      (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) || stdenv.hostPlatform.isDarwin;
   };
 }
diff --git a/pkgs/development/python-modules/pyqtwebengine/default.nix b/pkgs/development/python-modules/pyqtwebengine/default.nix
index fe3fab812928..11d0f847d832 100644
--- a/pkgs/development/python-modules/pyqtwebengine/default.nix
+++ b/pkgs/development/python-modules/pyqtwebengine/default.nix
@@ -60,7 +60,9 @@ buildPythonPackage (
         setuptools
       ]
       ++ lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [ libsForQt5.qtdeclarative ]
-      ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ autoSignDarwinBinariesHook ];
+      ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
+        autoSignDarwinBinariesHook
+      ];
 
     buildInputs =
       [
diff --git a/pkgs/development/python-modules/pyside6/default.nix b/pkgs/development/python-modules/pyside6/default.nix
index 7addb26e7167..088f4e785af6 100644
--- a/pkgs/development/python-modules/pyside6/default.nix
+++ b/pkgs/development/python-modules/pyside6/default.nix
@@ -78,7 +78,9 @@ stdenv.mkDerivation (finalAttrs: {
     '';
 
   # "Couldn't find libclang.dylib You will likely need to add it manually to PATH to ensure the build succeeds."
-  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin { LLVM_INSTALL_DIR = "${llvmPackages.libclang.lib}/lib"; };
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
+    LLVM_INSTALL_DIR = "${llvmPackages.libclang.lib}/lib";
+  };
 
   nativeBuildInputs = [
     cmake
diff --git a/pkgs/development/python-modules/pysvn/default.nix b/pkgs/development/python-modules/pysvn/default.nix
index 319398fdec91..24c75bf05e81 100644
--- a/pkgs/development/python-modules/pysvn/default.nix
+++ b/pkgs/development/python-modules/pysvn/default.nix
@@ -29,15 +29,18 @@ buildPythonPackage rec {
 
   patches = [ ./replace-python-first.patch ];
 
-  buildInputs = [
-    bash
-    subversion
-    apr
-    aprutil
-    expat
-    neon
-    openssl
-  ] ++ lib.optionals stdenv.hostPlatform.isLinux [ e2fsprogs ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ gcc ];
+  buildInputs =
+    [
+      bash
+      subversion
+      apr
+      aprutil
+      expat
+      neon
+      openssl
+    ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [ e2fsprogs ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ gcc ];
 
   preConfigure = ''
     cd Source
diff --git a/pkgs/development/python-modules/pytest-flask/default.nix b/pkgs/development/python-modules/pytest-flask/default.nix
index f4132d9512f9..cc0096db1fd7 100644
--- a/pkgs/development/python-modules/pytest-flask/default.nix
+++ b/pkgs/development/python-modules/pytest-flask/default.nix
@@ -36,7 +36,9 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "pytest_flask" ];
 
-  pytestFlagsArray = lib.optionals stdenv.hostPlatform.isDarwin [ "--ignore=tests/test_live_server.py" ];
+  pytestFlagsArray = lib.optionals stdenv.hostPlatform.isDarwin [
+    "--ignore=tests/test_live_server.py"
+  ];
 
   meta = with lib; {
     description = "Set of pytest fixtures to test Flask applications";
diff --git a/pkgs/development/python-modules/scipy/default.nix b/pkgs/development/python-modules/scipy/default.nix
index d6b812cd30ab..4677b47f1188 100644
--- a/pkgs/development/python-modules/scipy/default.nix
+++ b/pkgs/development/python-modules/scipy/default.nix
@@ -187,7 +187,9 @@ buildPythonPackage {
   #
   #         ldr     x0, [x0, ___stack_chk_guard];momd
   #
-  hardeningDisable = lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin) [ "stackprotector" ];
+  hardeningDisable = lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isDarwin) [
+    "stackprotector"
+  ];
 
   # remove references to dev dependencies
   postInstall = ''
diff --git a/pkgs/development/python-modules/sleekxmpp/default.nix b/pkgs/development/python-modules/sleekxmpp/default.nix
index 826b009e0d28..9c8031a6b878 100644
--- a/pkgs/development/python-modules/sleekxmpp/default.nix
+++ b/pkgs/development/python-modules/sleekxmpp/default.nix
@@ -28,7 +28,8 @@ buildPythonPackage rec {
   };
 
   meta = with lib; {
-    broken = (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
+    broken =
+      (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) || stdenv.hostPlatform.isDarwin;
     description = "XMPP library for Python";
     license = licenses.mit;
     homepage = "http://sleekxmpp.com/";
diff --git a/pkgs/development/python-modules/sourmash/default.nix b/pkgs/development/python-modules/sourmash/default.nix
index 8ed0a8157fbc..8e29c2845d12 100644
--- a/pkgs/development/python-modules/sourmash/default.nix
+++ b/pkgs/development/python-modules/sourmash/default.nix
@@ -21,7 +21,8 @@
   pytestCheckHook,
 }:
 let
-  stdenv' = if stdenv.hostPlatform.isDarwin then overrideSDK stdenv { darwinMinVersion = "10.14"; } else stdenv;
+  stdenv' =
+    if stdenv.hostPlatform.isDarwin then overrideSDK stdenv { darwinMinVersion = "10.14"; } else stdenv;
 in
 buildPythonPackage rec {
   pname = "sourmash";
diff --git a/pkgs/development/python-modules/spectral-cube/default.nix b/pkgs/development/python-modules/spectral-cube/default.nix
index 1c62233cc042..d9c3e6466143 100644
--- a/pkgs/development/python-modules/spectral-cube/default.nix
+++ b/pkgs/development/python-modules/spectral-cube/default.nix
@@ -60,7 +60,9 @@ buildPythonPackage rec {
 
   # On x86_darwin, this test fails with "Fatal Python error: Aborted"
   # when sandbox = true.
-  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [ "spectral_cube/tests/test_visualization.py" ];
+  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
+    "spectral_cube/tests/test_visualization.py"
+  ];
 
   pythonImportsCheck = [ "spectral_cube" ];
 
diff --git a/pkgs/development/python-modules/torch/default.nix b/pkgs/development/python-modules/torch/default.nix
index 6dd263806f0d..7b5b8e9f6726 100644
--- a/pkgs/development/python-modules/torch/default.nix
+++ b/pkgs/development/python-modules/torch/default.nix
@@ -296,7 +296,8 @@ buildPythonPackage rec {
     # error: no member named 'aligned_alloc' in the global namespace; did you mean simply 'aligned_alloc'
     # This lib overrided aligned_alloc hence the error message. Tltr: his function is linkable but not in header.
     +
-      lib.optionalString (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "11.0")
+      lib.optionalString
+        (stdenv.hostPlatform.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinSdkVersion "11.0")
         ''
           substituteInPlace third_party/pocketfft/pocketfft_hdronly.h --replace-fail '#if (__cplusplus >= 201703L) && (!defined(__MINGW32__)) && (!defined(_MSC_VER))
           inline void *aligned_alloc(size_t align, size_t size)' '#if 0
diff --git a/pkgs/development/python-modules/twisted/default.nix b/pkgs/development/python-modules/twisted/default.nix
index 8e401844adfc..100a7d42d201 100644
--- a/pkgs/development/python-modules/twisted/default.nix
+++ b/pkgs/development/python-modules/twisted/default.nix
@@ -175,7 +175,9 @@ buildPythonPackage rec {
     ++ passthru.optional-dependencies.http2
     ++ passthru.optional-dependencies.serial
     # not supported on aarch64-darwin: https://github.com/pyca/pyopenssl/issues/873
-    ++ lib.optionals (!(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)) passthru.optional-dependencies.tls;
+    ++ lib.optionals (
+      !(stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64)
+    ) passthru.optional-dependencies.tls;
 
   checkPhase = ''
     export SOURCE_DATE_EPOCH=315532800
diff --git a/pkgs/development/python-modules/watchdog/default.nix b/pkgs/development/python-modules/watchdog/default.nix
index 2a1633de0512..10184cfef7dd 100644
--- a/pkgs/development/python-modules/watchdog/default.nix
+++ b/pkgs/development/python-modules/watchdog/default.nix
@@ -26,7 +26,9 @@ buildPythonPackage rec {
 
   # force kqueue on x86_64-darwin, because our api version does
   # not support fsevents
-  patches = lib.optionals (stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isAarch64) [ ./force-kqueue.patch ];
+  patches = lib.optionals (stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isAarch64) [
+    ./force-kqueue.patch
+  ];
 
   buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];
 
diff --git a/pkgs/development/python-modules/zigpy/default.nix b/pkgs/development/python-modules/zigpy/default.nix
index c430b0853991..bc3fec15864e 100644
--- a/pkgs/development/python-modules/zigpy/default.nix
+++ b/pkgs/development/python-modules/zigpy/default.nix
@@ -72,10 +72,14 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  disabledTests = [
-    # assert quirked.quirk_metadata.quirk_location.endswith("zigpy/tests/test_quirks_v2.py]-line:104") is False
-    "test_quirks_v2"
-  ] ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64) [ "test_periodic_scan_priority" ];
+  disabledTests =
+    [
+      # assert quirked.quirk_metadata.quirk_location.endswith("zigpy/tests/test_quirks_v2.py]-line:104") is False
+      "test_quirks_v2"
+    ]
+    ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86_64) [
+      "test_periodic_scan_priority"
+    ];
 
   disabledTestPaths = [
     # Tests require network access
diff --git a/pkgs/development/tools/language-servers/lua-language-server/default.nix b/pkgs/development/tools/language-servers/lua-language-server/default.nix
index d187558a1c10..8e8f5fa3f79f 100644
--- a/pkgs/development/tools/language-servers/lua-language-server/default.nix
+++ b/pkgs/development/tools/language-servers/lua-language-server/default.nix
@@ -55,7 +55,9 @@ stdenv.mkDerivation (finalAttrs: {
         -e '/cxx_/s,$cc,clang++,'
     '';
 
-  ninjaFlags = [ "-fcompile/ninja/${if stdenv.hostPlatform.isDarwin then "macos" else "linux"}.ninja" ];
+  ninjaFlags = [
+    "-fcompile/ninja/${if stdenv.hostPlatform.isDarwin then "macos" else "linux"}.ninja"
+  ];
 
   postBuild = ''
     popd
diff --git a/pkgs/development/tools/misc/ddd/default.nix b/pkgs/development/tools/misc/ddd/default.nix
index 71a64d4b90ce..f33f08825799 100644
--- a/pkgs/development/tools/misc/ddd/default.nix
+++ b/pkgs/development/tools/misc/ddd/default.nix
@@ -25,7 +25,9 @@ stdenv.mkDerivation (finalAttrs: {
       --replace-fail 'debuggerCommand:' 'debuggerCommand: ${gdb}/bin/gdb'
   '';
 
-  nativeBuildInputs = [ imagemagick ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ desktopToDarwinBundle ];
+  nativeBuildInputs = [
+    imagemagick
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ desktopToDarwinBundle ];
 
   buildInputs = [
     motif
diff --git a/pkgs/development/tools/misc/hydra-cli/default.nix b/pkgs/development/tools/misc/hydra-cli/default.nix
index 42ec5704bae7..bed0297be54e 100644
--- a/pkgs/development/tools/misc/hydra-cli/default.nix
+++ b/pkgs/development/tools/misc/hydra-cli/default.nix
@@ -27,7 +27,9 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ openssl ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = [
+    openssl
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
   __darwinAllowLocalNetworking = true;
 
diff --git a/pkgs/development/tools/wasm-pack/default.nix b/pkgs/development/tools/wasm-pack/default.nix
index 42f59dfd8403..4b978485895d 100644
--- a/pkgs/development/tools/wasm-pack/default.nix
+++ b/pkgs/development/tools/wasm-pack/default.nix
@@ -27,7 +27,9 @@ rustPlatform.buildRustPackage rec {
     pkg-config
   ];
 
-  buildInputs = lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security ++ [ zstd ];
+  buildInputs = lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.frameworks.Security ++ [
+    zstd
+  ];
 
   # Most tests rely on external resources and build artifacts.
   # Disabling check here to work with build sandboxing.
diff --git a/pkgs/os-specific/linux/rtl8821ce/default.nix b/pkgs/os-specific/linux/rtl8821ce/default.nix
index 532ed4998918..67046b28c9ab 100644
--- a/pkgs/os-specific/linux/rtl8821ce/default.nix
+++ b/pkgs/os-specific/linux/rtl8821ce/default.nix
@@ -45,6 +45,7 @@ stdenv.mkDerivation (finalAttrs: {
       defelo
     ];
     broken =
-      stdenv.hostPlatform.isAarch64 || ((lib.versions.majorMinor kernel.version) == "5.4" && kernel.isHardened);
+      stdenv.hostPlatform.isAarch64
+      || ((lib.versions.majorMinor kernel.version) == "5.4" && kernel.isHardened);
   };
 })
diff --git a/pkgs/servers/homepage-dashboard/default.nix b/pkgs/servers/homepage-dashboard/default.nix
index dde6162438cb..f9ce34fde86e 100644
--- a/pkgs/servers/homepage-dashboard/default.nix
+++ b/pkgs/servers/homepage-dashboard/default.nix
@@ -52,7 +52,9 @@ buildNpmPackage rec {
 
   nativeBuildInputs = [ git ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools ];
 
-  buildInputs = [ nodePackages.node-gyp-build ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit ];
+  buildInputs = [
+    nodePackages.node-gyp-build
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ IOKit ];
 
   env.PYTHON = "${python3}/bin/python";
 
diff --git a/pkgs/tools/misc/goaccess/default.nix b/pkgs/tools/misc/goaccess/default.nix
index 81cf43feb659..b9433f23bb2c 100644
--- a/pkgs/tools/misc/goaccess/default.nix
+++ b/pkgs/tools/misc/goaccess/default.nix
@@ -23,10 +23,13 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
 
-  buildInputs = [
-    ncurses
-    openssl
-  ] ++ lib.optionals withGeolocation [ libmaxminddb ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ gettext ];
+  buildInputs =
+    [
+      ncurses
+      openssl
+    ]
+    ++ lib.optionals withGeolocation [ libmaxminddb ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ gettext ];
 
   configureFlags = [
     "--enable-utf8"
diff --git a/pkgs/tools/security/chainsaw/default.nix b/pkgs/tools/security/chainsaw/default.nix
index 78eabff9d465..5789f488985c 100644
--- a/pkgs/tools/security/chainsaw/default.nix
+++ b/pkgs/tools/security/chainsaw/default.nix
@@ -19,7 +19,9 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-1w3DYP69aOphoqbsZIF9aX56Lftg2niKClmImLTa5DE=";
 
-  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ darwin.apple_sdk.frameworks.CoreFoundation ];
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
+    darwin.apple_sdk.frameworks.CoreFoundation
+  ];
 
   ldflags = [
     "-w"

From aea931223a91acb7a2aa7ded32ed5d3ef9f31bad Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:08:52 +0200
Subject: [PATCH 086/107] magic-enum: remove testers.testVersion

package has no executable
---
 pkgs/development/libraries/magic-enum/default.nix | 2 --
 1 file changed, 2 deletions(-)

diff --git a/pkgs/development/libraries/magic-enum/default.nix b/pkgs/development/libraries/magic-enum/default.nix
index 7f65505793c7..93bcb8a624d8 100644
--- a/pkgs/development/libraries/magic-enum/default.nix
+++ b/pkgs/development/libraries/magic-enum/default.nix
@@ -4,7 +4,6 @@
 , cmake
 , nix-update-script
 , testers
-, magic-enum
 }:
 stdenv.mkDerivation rec{
   pname = "magic-enum";
@@ -29,7 +28,6 @@ stdenv.mkDerivation rec{
 
   passthru = {
     updateScript = nix-update-script { };
-    tests.version = testers.testVersion { package = magic-enum; };
   };
 
   meta = {

From a228d872f69fdc805af4cb804889851f8fcae1b2 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:55 +0200
Subject: [PATCH 087/107] alephone: use finalAttrs.finalPackage

---
 pkgs/by-name/al/alephone/package.nix | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/pkgs/by-name/al/alephone/package.nix b/pkgs/by-name/al/alephone/package.nix
index 0ae580c75edd..92cf6667f6c3 100644
--- a/pkgs/by-name/al/alephone/package.nix
+++ b/pkgs/by-name/al/alephone/package.nix
@@ -28,7 +28,6 @@
   unzip,
   zlib,
   zziplib,
-  alephone,
   testers,
 }:
 
@@ -94,7 +93,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   passthru.tests.version =
     # test that the version is correct
-    testers.testVersion { package = alephone; };
+    testers.testVersion { package = finalAttrs.finalPackage; };
 
   meta = {
     description = "Aleph One is the open source continuation of Bungie’s Marathon 2 game engine";
@@ -112,7 +111,7 @@ stdenv.mkDerivation (finalAttrs: {
       version,
       zip,
       meta,
-      icon ? alephone.icons + "/alephone.png",
+      icon ? finalAttrs.finalPackage.icons + "/alephone.png",
       ...
     }@extraArgs:
     stdenv.mkDerivation (
@@ -142,14 +141,14 @@ stdenv.mkDerivation (finalAttrs: {
           mkdir -p $out/bin $out/data/$pname $out/share/applications
           cp -a * $out/data/$pname
           cp $desktopItem/share/applications/* $out/share/applications
-          makeWrapper ${alephone}/bin/alephone $out/bin/$pname \
+          makeWrapper ${finalAttrs.finalPackage}/bin/alephone $out/bin/$pname \
             --add-flags $out/data/$pname
         '';
       }
       // extraArgs
       // {
         meta =
-          alephone.meta
+          finalAttrs.finalPackage.meta
           // {
             license = lib.licenses.free;
             mainProgram = pname;

From 1cbae1f8175e3757f3047a20fb5339fc41e05620 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:55 +0200
Subject: [PATCH 088/107] crowdin-cli: use finalAttrs.finalPackage

---
 pkgs/tools/text/crowdin-cli/default.nix | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/pkgs/tools/text/crowdin-cli/default.nix b/pkgs/tools/text/crowdin-cli/default.nix
index 5c46c1efef09..14f33ae0c518 100644
--- a/pkgs/tools/text/crowdin-cli/default.nix
+++ b/pkgs/tools/text/crowdin-cli/default.nix
@@ -7,17 +7,16 @@
 , installShellFiles
 , jre
 , makeWrapper
-, crowdin-cli
 , testers
 , unzip
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "crowdin-cli";
   version = "4.2.0";
 
   src = fetchurl {
-    url = "https://github.com/crowdin/${pname}/releases/download/${version}/${pname}.zip";
+    url = "https://github.com/crowdin/crowdin-cli/releases/download/${finalAttrs.version}/crowdin-cli.zip";
     hash = "sha256-158zbgYw4FP/vQVsSs9tt9VcisBWpRn/D4ORiM24PYY=";
   };
 
@@ -38,7 +37,7 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  passthru.tests.version = testers.testVersion { package = crowdin-cli; };
+  passthru.tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
 
   meta = with lib; {
     mainProgram = "crowdin";
@@ -48,4 +47,4 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     maintainers = with maintainers; [ DamienCassou ];
   };
-}
+})

From 13cd33392a373c3ddab3652bb7928e7bb044ee09 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:55 +0200
Subject: [PATCH 089/107] datefmt: use finalAttrs.finalPackage

---
 pkgs/tools/misc/datefmt/default.nix | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/pkgs/tools/misc/datefmt/default.nix b/pkgs/tools/misc/datefmt/default.nix
index 36fdf9fcfebb..1c1efd792a20 100644
--- a/pkgs/tools/misc/datefmt/default.nix
+++ b/pkgs/tools/misc/datefmt/default.nix
@@ -1,17 +1,17 @@
-{ lib, stdenv, fetchurl, datefmt, testers }:
+{ lib, stdenv, fetchurl, testers }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "datefmt";
   version = "0.2.2";
 
   src = fetchurl {
-    url = "https://cdn.jb55.com/tarballs/datefmt/datefmt-${version}.tar.gz";
+    url = "https://cdn.jb55.com/tarballs/datefmt/datefmt-${finalAttrs.version}.tar.gz";
     sha256 = "sha256-HgW/vOGVEmAbm8k3oIwIa+cogq7qmX7MfTmHqxv9lhY=";
   };
 
   makeFlags = [ "PREFIX=$(out)" ];
 
-  passthru.tests.version = testers.testVersion { package = datefmt; };
+  passthru.tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
 
   meta = with lib; {
     homepage = "https://jb55.com/datefmt";
@@ -21,4 +21,4 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ jb55 ];
     mainProgram = "datefmt";
   };
-}
+})

From fe7de85938f8f7dd9b44a5cb2dfaf18393b7b98e Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:55 +0200
Subject: [PATCH 090/107] detekt: use finalAttrs.finalPackage

---
 pkgs/development/tools/detekt/default.nix | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/pkgs/development/tools/detekt/default.nix b/pkgs/development/tools/detekt/default.nix
index 75ac8e45e4ae..45ef24e4b1f7 100644
--- a/pkgs/development/tools/detekt/default.nix
+++ b/pkgs/development/tools/detekt/default.nix
@@ -1,12 +1,12 @@
-{ detekt, lib, stdenv, fetchurl, makeWrapper, jre_headless, testers }:
-stdenv.mkDerivation rec {
+{ lib, stdenv, fetchurl, makeWrapper, jre_headless, testers }:
+stdenv.mkDerivation (finalAttrs: {
   pname = "detekt";
   version = "1.23.7";
 
-  jarfilename = "${pname}-${version}-executable.jar";
+  jarfilename = "detekt-${finalAttrs.version}-executable.jar";
 
   src = fetchurl {
-    url = "https://github.com/detekt/detekt/releases/download/v${version}/detekt-cli-${version}-all.jar";
+    url = "https://github.com/detekt/detekt/releases/download/v${finalAttrs.version}/detekt-cli-${finalAttrs.version}-all.jar";
     sha256 = "sha256-hL7e0oMBLLKzi8rvSZZFL81gadLpynS1Dqp54K0hiX4=";
   };
 
@@ -17,15 +17,15 @@ stdenv.mkDerivation rec {
   installPhase = ''
     runHook preInstall
 
-    install -D "$src" "$out/share/java/${jarfilename}"
+    install -D "$src" "$out/share/java/${finalAttrs.jarfilename}"
 
     makeWrapper ${jre_headless}/bin/java $out/bin/detekt \
-      --add-flags "-jar $out/share/java/${jarfilename}"
+      --add-flags "-jar $out/share/java/${finalAttrs.jarfilename}"
 
     runHook postInstall
   '';
 
-  passthru.tests.version = testers.testVersion { package = detekt; };
+  passthru.tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
 
   meta = with lib; {
     description = "Static code analysis for Kotlin";
@@ -36,4 +36,4 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ mdr ];
     sourceProvenance = with sourceTypes; [ binaryBytecode ];
   };
-}
+})

From 82ada5c114ccb753d4a88e247a14805e8b82a834 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:56 +0200
Subject: [PATCH 091/107] dieharder: use finalAttrs.finalPackage

---
 pkgs/tools/security/dieharder/default.nix | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/pkgs/tools/security/dieharder/default.nix b/pkgs/tools/security/dieharder/default.nix
index 2cc5f719aa1d..c7804f0c5f4d 100644
--- a/pkgs/tools/security/dieharder/default.nix
+++ b/pkgs/tools/security/dieharder/default.nix
@@ -1,12 +1,12 @@
 { lib, stdenv, fetchurl, gsl
-, dieharder, testers }:
+, testers }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "dieharder";
   version = "3.31.1";
 
   src = fetchurl {
-    url = "http://webhome.phy.duke.edu/~rgb/General/dieharder/dieharder-${version}.tgz";
+    url = "http://webhome.phy.duke.edu/~rgb/General/dieharder/dieharder-${finalAttrs.version}.tgz";
     hash = "sha256-bP8P+DlMVTVJrHQzNZzPyVX7JnlCYDFGIN+l5M1Lcn8=";
   };
 
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ gsl ];
 
   passthru = {
-    tests.version = testers.testVersion { package = dieharder; };
+    tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
   };
 
   meta = with lib; {
@@ -34,4 +34,4 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ zhaofengli ];
     platforms = platforms.unix;
   };
-}
+})

From 57002b84d204602224db56a7b9c41475ae759f32 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:56 +0200
Subject: [PATCH 092/107] donkey: use finalAttrs.finalPackage

---
 pkgs/tools/security/donkey/default.nix | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/pkgs/tools/security/donkey/default.nix b/pkgs/tools/security/donkey/default.nix
index f56811cc273f..e481744ee7d5 100644
--- a/pkgs/tools/security/donkey/default.nix
+++ b/pkgs/tools/security/donkey/default.nix
@@ -4,20 +4,19 @@
 , coreutils
 , lib
 , testers
-, donkey
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "donkey";
   version = "1.2.0";
 
   src = fetchFromGitLab {
     owner = "donkey";
     repo = "donkey";
-    rev = "tags/release/${version}";
+    rev = "tags/release/${finalAttrs.version}";
     hash = "sha256-2xgb9l0Eko39HJVROAWEIP3qLg5t/5h/rm2MoXoKnJI=";
   };
-  sourceRoot = "${src.name}/src";
+  sourceRoot = "${finalAttrs.src.name}/src";
 
   buildInputs = [ libmd ];
 
@@ -27,7 +26,7 @@ stdenv.mkDerivation rec {
     export INSTALL_DATA="${coreutils}/bin/install -m 444"
   '';
 
-  passthru.tests.version = testers.testVersion { package = donkey; };
+  passthru.tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
 
   meta = with lib; {
     description = "Alternative for S/KEY's 'key' command";
@@ -51,4 +50,4 @@ The name "Donkey" is an acronym of "Don't Key".
     maintainers = with maintainers; [ raboof ];
     platforms = platforms.all;
   };
-}
+})

From 644c9ab3d61b144e8b1ad0bf993f964d7609217b Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:56 +0200
Subject: [PATCH 093/107] dunst: use finalAttrs.finalPackage

---
 pkgs/by-name/du/dunst/package.nix | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/pkgs/by-name/du/dunst/package.nix b/pkgs/by-name/du/dunst/package.nix
index f01f65c86283..c5dc4b04eac7 100644
--- a/pkgs/by-name/du/dunst/package.nix
+++ b/pkgs/by-name/du/dunst/package.nix
@@ -23,7 +23,6 @@
 , xorgproto
 , librsvg
 , testers
-, dunst
 , withX11 ? true
 , withWayland ? true
 }:
@@ -89,7 +88,7 @@ stdenv.mkDerivation (finalAttrs: {
       --replace-fail "jq" "${lib.getExe jq}"
   '';
 
-  passthru.tests.version = testers.testVersion { package = dunst; };
+  passthru.tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
 
   meta = with lib; {
     description = "Lightweight and customizable notification daemon";

From eba30179f408f0c57315c940ade22a62334e02db Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:56 +0200
Subject: [PATCH 094/107] gummy: use finalAttrs.finalPackage

---
 pkgs/tools/misc/gummy/default.nix | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/pkgs/tools/misc/gummy/default.nix b/pkgs/tools/misc/gummy/default.nix
index e2d600d8e2ee..628d5e9e7d16 100644
--- a/pkgs/tools/misc/gummy/default.nix
+++ b/pkgs/tools/misc/gummy/default.nix
@@ -2,7 +2,6 @@
 , stdenv
 , fetchFromGitea
 , testers
-, gummy
 , cmake
 , libX11
 , libXext
@@ -17,7 +16,7 @@
 , spdlog
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "gummy";
   version = "0.6.0";
 
@@ -25,7 +24,7 @@ stdenv.mkDerivation rec {
     domain = "codeberg.org";
     owner = "fusco";
     repo = "gummy";
-    rev = version;
+    rev = finalAttrs.version;
     hash = "sha256-kATieFf+dEpcYgSEPoETacP7R+u2dOrg7rOhIkNQ1uE=";
   };
 
@@ -65,7 +64,7 @@ stdenv.mkDerivation rec {
     ln -s $out/libexec/gummyd $out/bin/gummyd
   '';
 
-  passthru.tests.version = testers.testVersion { package = gummy; };
+  passthru.tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
 
   meta = with lib; {
     homepage = "https://codeberg.org/fusco/gummy";
@@ -77,4 +76,4 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Only;
     maintainers = [ ];
   };
-}
+})

From 039acd3e8ba8bce8e7ed61d39fcb1c286bb8f7af Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:56 +0200
Subject: [PATCH 095/107] infisical: use finalAttrs.finalPackage

---
 pkgs/development/tools/infisical/default.nix | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/tools/infisical/default.nix b/pkgs/development/tools/infisical/default.nix
index 665dda06b2fc..675334b14e39 100644
--- a/pkgs/development/tools/infisical/default.nix
+++ b/pkgs/development/tools/infisical/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchurl, testers, infisical, installShellFiles }:
+{ stdenv, lib, fetchurl, testers, installShellFiles }:
 
 # this expression is mostly automated, and you are STRONGLY
 # RECOMMENDED to use to nix-update for updating this expression when new
@@ -36,7 +36,7 @@ let
     fetchurl { inherit name url hash; };
 
 in
-stdenv.mkDerivation {
+stdenv.mkDerivation (finalAttrs: {
   pname = "infisical";
   version = version;
   inherit src;
@@ -63,7 +63,7 @@ stdenv.mkDerivation {
 
   passthru = {
     updateScript = ./update.sh;
-    tests.version = testers.testVersion { package = infisical; };
+    tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
   };
 
   meta = with lib; {
@@ -84,4 +84,4 @@ stdenv.mkDerivation {
       "x86_64-darwin"
     ];
   };
-}
+})

From 59683380680a2bd17ebdfc6e452361089430ccea Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:57 +0200
Subject: [PATCH 096/107] infnoise: use finalAttrs.finalPackage

---
 pkgs/misc/drivers/infnoise/default.nix | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/pkgs/misc/drivers/infnoise/default.nix b/pkgs/misc/drivers/infnoise/default.nix
index 47ff00459923..e2f117e1e8c4 100644
--- a/pkgs/misc/drivers/infnoise/default.nix
+++ b/pkgs/misc/drivers/infnoise/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchFromGitHub, fetchpatch, libftdi
-, infnoise, testers }:
+, testers }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "infnoise";
   version = "0.3.2";
 
@@ -23,8 +23,8 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  GIT_COMMIT = src.rev;
-  GIT_VERSION = version;
+  GIT_COMMIT = finalAttrs.src.rev;
+  GIT_VERSION = finalAttrs.version;
   GIT_DATE = "2019-08-12";
 
   buildInputs = [ libftdi ];
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
   '';
 
   passthru = {
-    tests.version = testers.testVersion { package = infnoise; };
+    tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
   };
 
   meta = with lib; {
@@ -57,4 +57,4 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ StijnDW zhaofengli ];
     platforms = platforms.linux;
   };
-}
+})

From 879556bc9722dac68ddc7d848179f96304271a94 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:57 +0200
Subject: [PATCH 097/107] ios-webkit-debug-proxy: use finalAttrs.finalPackage

---
 pkgs/by-name/io/ios-webkit-debug-proxy/package.nix | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/pkgs/by-name/io/ios-webkit-debug-proxy/package.nix b/pkgs/by-name/io/ios-webkit-debug-proxy/package.nix
index 8ec3a3252907..a968dd923196 100644
--- a/pkgs/by-name/io/ios-webkit-debug-proxy/package.nix
+++ b/pkgs/by-name/io/ios-webkit-debug-proxy/package.nix
@@ -13,7 +13,6 @@
   libusb1,
   openssl,
 
-  ios-webkit-debug-proxy,
   nix-update-script,
   testers,
 }:
@@ -61,7 +60,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   passthru = {
     updateScript = nix-update-script { };
-    tests.version = testers.testVersion { package = ios-webkit-debug-proxy; };
+    tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
   };
 
   meta = with lib; {

From 76acfdb15dcdfee8e20326f7e86a9a09f97e3449 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:57 +0200
Subject: [PATCH 098/107] komorebi: use finalAttrs.finalPackage

---
 pkgs/applications/graphics/komorebi/default.nix | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/pkgs/applications/graphics/komorebi/default.nix b/pkgs/applications/graphics/komorebi/default.nix
index 4d60cde30cd3..f98549cb14ff 100644
--- a/pkgs/applications/graphics/komorebi/default.nix
+++ b/pkgs/applications/graphics/komorebi/default.nix
@@ -13,17 +13,16 @@
 , ninja
 , wrapGAppsHook3
 , testers
-, komorebi
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "komorebi";
   version = "2.2.1";
 
   src = fetchFromGitHub {
     owner = "Komorebi-Fork";
     repo = "komorebi";
-    rev = "v${version}";
+    rev = "v${finalAttrs.version}";
     hash = "sha256-vER69dSxu4JuWNAADpkxHE/zjOMhQp+Fc21J+JHQ8xk=";
   };
 
@@ -44,7 +43,7 @@ stdenv.mkDerivation rec {
     clutter-gst
   ];
 
-  passthru.tests.version = testers.testVersion { package = komorebi; };
+  passthru.tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
 
   meta = with lib; {
     description = "Beautiful and customizable wallpaper manager for Linux";
@@ -53,4 +52,4 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ kranzes ];
     platforms = platforms.linux;
   };
-}
+})

From 6038b25d0ea5e53d1fd66712b29b9033a4e1ac76 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:57 +0200
Subject: [PATCH 099/107] lgogdownloader: use finalAttrs.finalPackage

---
 pkgs/by-name/lg/lgogdownloader/package.nix | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/pkgs/by-name/lg/lgogdownloader/package.nix b/pkgs/by-name/lg/lgogdownloader/package.nix
index e0a3d022163e..bdd32121a5c0 100644
--- a/pkgs/by-name/lg/lgogdownloader/package.nix
+++ b/pkgs/by-name/lg/lgogdownloader/package.nix
@@ -15,19 +15,18 @@
   html-tidy,
   libsForQt5,
   testers,
-  lgogdownloader,
 
   enableGui ? true,
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "lgogdownloader";
   version = "3.15";
 
   src = fetchFromGitHub {
     owner = "Sude-";
     repo = "lgogdownloader";
-    rev = "refs/tags/v${version}";
+    rev = "refs/tags/v${finalAttrs.version}";
     hash = "sha256-h2N5pRwwZZ3jAvRrT4Ebk4N5WO9tQjDrp8KRqriwUi4=";
   };
 
@@ -56,7 +55,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = lib.optional enableGui "-DUSE_QT_GUI=ON";
 
   passthru.tests = {
-    version = testers.testVersion { package = lgogdownloader; };
+    version = testers.testVersion { package = finalAttrs.finalPackage; };
   };
 
   meta = {
@@ -67,4 +66,4 @@ stdenv.mkDerivation rec {
     maintainers = with lib.maintainers; [ _0x4A6F ];
     platforms = lib.platforms.linux;
   };
-}
+})

From c14bf38c7911453100c199edd809e9b366392c25 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:57 +0200
Subject: [PATCH 100/107] notmuch: use finalAttrs.finalPackage

---
 pkgs/applications/networking/mailreaders/notmuch/default.nix | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/pkgs/applications/networking/mailreaders/notmuch/default.nix b/pkgs/applications/networking/mailreaders/notmuch/default.nix
index 588cd4326a61..b70512a9d151 100644
--- a/pkgs/applications/networking/mailreaders/notmuch/default.nix
+++ b/pkgs/applications/networking/mailreaders/notmuch/default.nix
@@ -2,7 +2,6 @@
 , pkg-config, gnupg
 , xapian, gmime3, sfsexp, talloc, zlib
 , doxygen, perl, texinfo
-, notmuch
 , pythonPackages
 , emacs
 , ruby
@@ -157,7 +156,7 @@ stdenv.mkDerivation (finalAttrs: {
       paths = with ruby.gems; [ mail ];
       pathsToLink = [ "/lib" "/nix-support" ];
     };
-    tests.version = testers.testVersion { package = notmuch; };
+    tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
 
     updateScript = gitUpdater {
       url = "https://git.notmuchmail.org/git/notmuch";

From a1b7dfbc6ca9664254d6fe1f04da40c3ecfd7c4a Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:58 +0200
Subject: [PATCH 101/107] packcc: use finalAttrs.finalPackage

---
 pkgs/development/tools/packcc/default.nix | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/pkgs/development/tools/packcc/default.nix b/pkgs/development/tools/packcc/default.nix
index 0f756388be3b..682bc519238e 100644
--- a/pkgs/development/tools/packcc/default.nix
+++ b/pkgs/development/tools/packcc/default.nix
@@ -2,21 +2,20 @@
   bats,
   fetchFromGitHub,
   lib,
-  packcc,
   python3,
   stdenv,
   testers,
   uncrustify,
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "packcc";
   version = "2.0.2";
 
   src = fetchFromGitHub {
     owner = "arithy";
     repo = "packcc";
-    rev = "v${version}";
+    rev = "v${finalAttrs.version}";
     hash = "sha256-k1C/thvr/5fYrgu/j8YN3kwXp4k26sC9AhYhYAKQuX0=";
   };
 
@@ -61,7 +60,7 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  passthru.tests.version = testers.testVersion { package = packcc; };
+  passthru.tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
 
   meta = with lib; {
     description = "Parser generator for C";
@@ -72,10 +71,10 @@ stdenv.mkDerivation rec {
       - Supports direct and indirect left-recursive grammar rules.
     '';
     homepage = "https://github.com/arithy/packcc";
-    changelog = "https://github.com/arithy/packcc/releases/tag/${src.rev}";
+    changelog = "https://github.com/arithy/packcc/releases/tag/${finalAttrs.src.rev}";
     license = licenses.mit;
     maintainers = with maintainers; [ azahi ];
     platforms = platforms.unix;
     mainProgram = "packcc";
   };
-}
+})

From 85c14074e0d84830e4e7a5fcf633bea46f3b01cc Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:58 +0200
Subject: [PATCH 102/107] photoprism: use finalAttrs.finalPackage

---
 pkgs/servers/photoprism/default.nix | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/pkgs/servers/photoprism/default.nix b/pkgs/servers/photoprism/default.nix
index 0c39ad8b6b81..499758520882 100644
--- a/pkgs/servers/photoprism/default.nix
+++ b/pkgs/servers/photoprism/default.nix
@@ -1,4 +1,5 @@
-{ pkgs, lib, stdenv, fetchFromGitHub, fetchzip, darktable, rawtherapee, ffmpeg_7, libheif, exiftool, imagemagick, makeWrapper, testers
+{ lib, stdenv, fetchFromGitHub, fetchzip, darktable, rawtherapee, ffmpeg_7, libheif, exiftool, imagemagick, makeWrapper, testers
+, callPackage
 , nixosTests
 , librsvg }:
 
@@ -13,9 +14,9 @@ let
     hash = "sha256-ihDv5c5RUjDbFcAHJjzp/8qCwKfA+rlFXPziaYarzs8=";
   };
 
-  libtensorflow = pkgs.callPackage ./libtensorflow.nix { };
-  backend = pkgs.callPackage ./backend.nix { inherit libtensorflow src version; };
-  frontend = pkgs.callPackage ./frontend.nix { inherit src version; };
+  libtensorflow = callPackage ./libtensorflow.nix { };
+  backend = callPackage ./backend.nix { inherit libtensorflow src version; };
+  frontend = callPackage ./frontend.nix { inherit src version; };
 
   fetchModel = { name, hash }:
     fetchzip {
@@ -41,7 +42,7 @@ let
 
   assets_path = "$out/share/${pname}";
 in
-stdenv.mkDerivation {
+stdenv.mkDerivation (finalAttrs: {
   inherit pname version;
 
   nativeBuildInputs = [
@@ -78,7 +79,7 @@ stdenv.mkDerivation {
     runHook postInstall
   '';
 
-  passthru.tests.version = testers.testVersion { package = pkgs.photoprism; };
+  passthru.tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
   passthru.tests.photoprism = nixosTests.photoprism;
 
   meta = with lib; {
@@ -89,4 +90,4 @@ stdenv.mkDerivation {
     maintainers = with maintainers; [ benesim ];
     mainProgram = "photoprism";
   };
-}
+})

From 4865536f92b40ed1ea672e7abbfed5856a589e34 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:58 +0200
Subject: [PATCH 103/107] pmacct: use finalAttrs.finalPackage

---
 pkgs/tools/networking/pmacct/default.nix | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/pkgs/tools/networking/pmacct/default.nix b/pkgs/tools/networking/pmacct/default.nix
index 542339b05dbb..3cd43ec9a873 100644
--- a/pkgs/tools/networking/pmacct/default.nix
+++ b/pkgs/tools/networking/pmacct/default.nix
@@ -14,17 +14,16 @@
 , withMysql ? true, libmysqlclient, zlib, numactl
 , gnutlsSupport ? false, gnutls
 , testers
-, pmacct
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   version = "1.7.9";
   pname = "pmacct";
 
   src = fetchFromGitHub {
     owner = "pmacct";
     repo = "pmacct";
-    rev = "v${version}";
+    rev = "v${finalAttrs.version}";
     hash = "sha256-3gV6GUhTQnH09NRIJQI0xBn05Bgo3AJsE2cSxNPXITo=";
   };
 
@@ -55,7 +54,7 @@ stdenv.mkDerivation rec {
   ++ lib.optional gnutlsSupport "--enable-gnutls";
 
   passthru.tests = {
-    version = testers.testVersion { package = pmacct; command = "pmacct -V"; };
+    version = testers.testVersion { package = finalAttrs.finalPackage; command = "pmacct -V"; };
   };
 
   meta = with lib; {
@@ -70,4 +69,4 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ _0x4A6F ];
     platforms = platforms.unix;
   };
-}
+})

From 9f5f2c9b4dce31cd867f58554f1de5a8822d8014 Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:58 +0200
Subject: [PATCH 104/107] renovate: use finalAttrs.finalPackage

---
 pkgs/by-name/re/renovate/package.nix | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/pkgs/by-name/re/renovate/package.nix b/pkgs/by-name/re/renovate/package.nix
index e7f615aba604..edea55abb82d 100644
--- a/pkgs/by-name/re/renovate/package.nix
+++ b/pkgs/by-name/re/renovate/package.nix
@@ -7,7 +7,6 @@
   overrideSDK,
   pnpm_9,
   python3,
-  renovate,
   testers,
   xcbuild,
   nixosTests,
@@ -91,7 +90,7 @@ stdenv'.mkDerivation (finalAttrs: {
 
   passthru = {
     tests = {
-      version = testers.testVersion { package = renovate; };
+      version = testers.testVersion { package = finalAttrs.finalPackage; };
       vm-test = nixosTests.renovate;
     };
     updateScript = nix-update-script { };

From 77922ccc8098821d0904f2451a23d7bffcef2d6f Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:32:59 +0200
Subject: [PATCH 105/107] violet: use finalAttrs.finalPackage

---
 pkgs/by-name/vi/violet/package.nix | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/pkgs/by-name/vi/violet/package.nix b/pkgs/by-name/vi/violet/package.nix
index 35e13eea544f..e1fada3863af 100644
--- a/pkgs/by-name/vi/violet/package.nix
+++ b/pkgs/by-name/vi/violet/package.nix
@@ -4,7 +4,6 @@
   fetchFromGitHub,
   nix-update-script,
   stdenv,
-  violet,
   testers,
 }:
 
@@ -24,7 +23,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   passthru = {
     updateScript = nix-update-script { };
-    tests = testers.testVersion { package = violet; };
+    tests = testers.testVersion { package = finalAttrs.finalPackage; };
   };
 
   meta = {

From f793451a34abd1849b060c803eb2be05a00e478b Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:33:20 +0200
Subject: [PATCH 106/107] undetected-chromedriver: use finalAttrs.finalPackage

---
 pkgs/by-name/un/undetected-chromedriver/package.nix | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/pkgs/by-name/un/undetected-chromedriver/package.nix b/pkgs/by-name/un/undetected-chromedriver/package.nix
index 3976f3cc685b..844bbe3b069c 100644
--- a/pkgs/by-name/un/undetected-chromedriver/package.nix
+++ b/pkgs/by-name/un/undetected-chromedriver/package.nix
@@ -6,10 +6,9 @@
   python3,
 
   testers,
-  undetected-chromedriver,
 }:
 
-stdenv.mkDerivation {
+stdenv.mkDerivation (finalAttrs: {
   pname = "undetected-chromedriver";
   inherit (chromedriver) version;
 
@@ -34,11 +33,11 @@ stdenv.mkDerivation {
     install -D -m 0555 chromedriver $out/bin/undetected-chromedriver
   '';
 
-  passthru.tests.version = testers.testVersion { package = undetected-chromedriver; };
+  passthru.tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
 
   meta = chromedriver.meta // {
     description = "Custom Selenium ChromeDriver that passes all bot mitigation systems";
     mainProgram = "undetected-chromedriver";
     maintainers = with lib.maintainers; [ paveloom ];
   };
-}
+})

From a4f7690fdcf81b0d53f8387c465d44ac197df01a Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 17 Sep 2024 03:33:52 +0200
Subject: [PATCH 107/107] yandex-cloud: use finalAttrs.finalPackage

---
 pkgs/by-name/ya/yandex-cloud/package.nix | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/pkgs/by-name/ya/yandex-cloud/package.nix b/pkgs/by-name/ya/yandex-cloud/package.nix
index d93adcae1ab5..e45cf8ab738a 100644
--- a/pkgs/by-name/ya/yandex-cloud/package.nix
+++ b/pkgs/by-name/ya/yandex-cloud/package.nix
@@ -12,14 +12,13 @@
   nix,
   # tests
   testers,
-  yandex-cloud,
 }:
 let
   pname = "yandex-cloud";
   sources = lib.importJSON ./sources.json;
   inherit (sources) version binaries;
 in
-stdenv.mkDerivation {
+stdenv.mkDerivation (finalAttrs: {
   inherit pname version;
 
   src = fetchurl binaries.${stdenv.hostPlatform.system};
@@ -68,7 +67,7 @@ stdenv.mkDerivation {
         (lib.makeBinPath [ nix ])
       ];
     } ./update.py;
-    tests.version = testers.testVersion { package = yandex-cloud; };
+    tests.version = testers.testVersion { package = finalAttrs.finalPackage; };
   };
 
   meta = {
@@ -96,4 +95,4 @@ stdenv.mkDerivation {
     ];
     mainProgram = "yc";
   };
-}
+})