diff --git a/pkgs/development/libraries/NSPlist/default.nix b/pkgs/by-name/ns/nsplist/package.nix
similarity index 69%
rename from pkgs/development/libraries/NSPlist/default.nix
rename to pkgs/by-name/ns/nsplist/package.nix
index 0ad160673973..92495409f65a 100644
--- a/pkgs/development/libraries/NSPlist/default.nix
+++ b/pkgs/by-name/ns/nsplist/package.nix
@@ -1,17 +1,25 @@
-{ lib, stdenv, fetchFromGitHub, flex, cmake }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, cmake
+, flex
+}:
 
 stdenv.mkDerivation {
-  pname = "NSPlist";
-  version = "unstable-2017-04-11";
+  pname = "nsplist";
+  version = "0-unstable-2017-04-11";
 
   src = fetchFromGitHub {
     owner = "matthewbauer";
     repo = "NSPlist";
     rev = "713decf06c1ef6c39a707bc99eb45ac9925f2b8a";
-    sha256 = "0v4yfiwfd08hmh2ydgy6pnmlzjbd96k78dsla9pfd56ka89aw74r";
+    hash = "sha256-mRyuElLTlOZuUlQ3dKZJbclPq73Gv+YFrBCB5nh0nmw=";
   };
 
-  nativeBuildInputs = [ flex cmake ];
+  nativeBuildInputs = [
+    cmake
+    flex
+  ];
 
   preConfigure = ''
     # Regenerate the lexer for improved compatibility with clang 16.
diff --git a/pkgs/development/libraries/PlistCpp/default.nix b/pkgs/by-name/pl/plistcpp/package.nix
similarity index 58%
rename from pkgs/development/libraries/PlistCpp/default.nix
rename to pkgs/by-name/pl/plistcpp/package.nix
index 4eea44e3ba0b..c2e765e4f5d0 100644
--- a/pkgs/development/libraries/PlistCpp/default.nix
+++ b/pkgs/by-name/pl/plistcpp/package.nix
@@ -1,22 +1,36 @@
-{ lib, stdenv, fetchFromGitHub, cmake, boost, NSPlist, pugixml }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, cmake
+, boost
+, nsplist
+, pugixml
+}:
 
 stdenv.mkDerivation {
-  pname = "PlistCpp";
-  version = "unstable-11615d";
+  pname = "plistcpp";
+  version = "0-unstable-2017-04-11";
 
   src = fetchFromGitHub {
     owner = "matthewbauer";
     repo = "PlistCpp";
     rev = "11615deab3369356a182dabbf5bae30574967264";
-    sha256 = "10jn6bvm9vn6492zix2pd724v5h4lccmkqg3lxfw8r0qg3av0yzv";
+    hash = "sha256-+3uw1XgYZMRdp+PhWRmjBJZNxGlX9PhFIsbuVPcyVoI=";
   };
 
   postPatch = ''
     sed -i "1i #include <algorithm>" src/Plist.cpp
   '';
 
-  nativeBuildInputs = [ cmake ];
-  buildInputs = [ boost NSPlist pugixml ];
+  nativeBuildInputs = [
+    cmake
+  ];
+
+  buildInputs = [
+    boost
+    nsplist
+    pugixml
+  ];
 
   meta = with lib; {
     maintainers = with maintainers; [ matthewbauer ];
diff --git a/pkgs/development/tools/xib2nib/default.nix b/pkgs/by-name/xi/xib2nib/package.nix
similarity index 59%
rename from pkgs/development/tools/xib2nib/default.nix
rename to pkgs/by-name/xi/xib2nib/package.nix
index b579e3674334..56f1e2878343 100644
--- a/pkgs/development/tools/xib2nib/default.nix
+++ b/pkgs/by-name/xi/xib2nib/package.nix
@@ -1,18 +1,31 @@
-{ lib, stdenv, fetchFromGitHub, pugixml, boost, PlistCpp }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, boost
+, plistcpp
+, pugixml
+}:
 
 stdenv.mkDerivation {
   pname = "xib2nib";
-  version = "unstable-2017-04-12";
+  version = "0-unstable-2017-04-12";
 
   src = fetchFromGitHub {
     owner = "matthewbauer";
     repo = "xib2nib";
     rev = "97c6a53aab83d919805efcae33cf80690e953d1e";
-    sha256 = "08442f4xg7racknj35nr56a4c62gvdgdw55pssbkn2qq0rfzziqq";
+    hash = "sha256-GMf/XQYYCzuX1rcU3l7bTxhGlCnZliHtZCqf14kThCA=";
   };
 
-  buildInputs = [ PlistCpp pugixml boost ];
-  makeFlags = [ "PREFIX=$(out)" ];
+  buildInputs = [
+    boost
+    plistcpp
+    pugixml
+  ];
+
+  makeFlags = [
+    "PREFIX=$(out)"
+  ];
 
   meta = with lib; {
     maintainers = with maintainers; [ matthewbauer ];
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index ce168d038e60..ecff8d259255 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -728,6 +728,7 @@ mapAliases ({
   noto-fonts-cjk = noto-fonts-cjk-sans; # Added 2021-12-16
   noto-fonts-emoji = noto-fonts-color-emoji; # Added 2023-09-09
   noto-fonts-extra = noto-fonts; # Added 2023-04-08
+  NSPlist = nsplist; # Added 2024-01-05
   nvidia-thrust = throw "nvidia-thrust has been removed because the project was deprecated; use cudaPackages.cuda_cccl";
 
   ### O ###
@@ -817,6 +818,7 @@ mapAliases ({
   pinentry_gtk2 = throw "'pinentry_gtk2' has been renamed to/replaced by 'pinentry-gtk2'"; # Converted to throw 2023-09-10
   pinentry_qt = throw "'pinentry_qt' has been renamed to/replaced by 'pinentry-qt'"; # Converted to throw 2023-09-10
   pinentry_qt5 = pinentry-qt; # Added 2020-02-11
+  PlistCpp = plistcpp; # Added 2024-01-05
   poetry2nix = throw "poetry2nix is now maintained out-of-tree. Please use https://github.com/nix-community/poetry2nix/"; # Added 2023-10-26
   prayer = throw "prayer has been removed from nixpkgs"; # Added 2023-11-09
   privacyidea = throw "privacyidea has been removed from nixpkgs"; # Added 2023-10-31
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index bdfb60fec1fa..4185d7e3224a 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -41631,12 +41631,6 @@ with pkgs;
 
   chrome-token-signing = libsForQt5.callPackage ../tools/security/chrome-token-signing { };
 
-  NSPlist = callPackage ../development/libraries/NSPlist { };
-
-  PlistCpp = callPackage ../development/libraries/PlistCpp { };
-
-  xib2nib = callPackage ../development/tools/xib2nib { };
-
   linode-cli = python3Packages.callPackage ../tools/virtualization/linode-cli { };
 
   hss = callPackage ../tools/networking/hss { };