diff --git a/pkgs/tools/games/ps3-disc-dumper/default.nix b/pkgs/tools/games/ps3-disc-dumper/default.nix
index 577be9738486..6cf54c9a8f85 100644
--- a/pkgs/tools/games/ps3-disc-dumper/default.nix
+++ b/pkgs/tools/games/ps3-disc-dumper/default.nix
@@ -1,6 +1,5 @@
 { lib
 , buildDotnetModule
-, dotnetCorePackages
 , fetchFromGitHub
 , zlib
 , openssl
diff --git a/pkgs/tools/games/slipstream/default.nix b/pkgs/tools/games/slipstream/default.nix
index 6a41cd6b52db..828d0e7ce46e 100644
--- a/pkgs/tools/games/slipstream/default.nix
+++ b/pkgs/tools/games/slipstream/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchFromGitHub, stdenv, makeWrapper, buildMaven, maven, jdk }:
+{ lib, fetchFromGitHub, makeWrapper, maven, jdk }:
 let
   mavenWithJdk = maven.override { inherit jdk; };
 in
diff --git a/pkgs/tools/games/steamtinkerlaunch/default.nix b/pkgs/tools/games/steamtinkerlaunch/default.nix
index ea64c7208bc9..4f37109f5437 100644
--- a/pkgs/tools/games/steamtinkerlaunch/default.nix
+++ b/pkgs/tools/games/steamtinkerlaunch/default.nix
@@ -3,7 +3,6 @@
 , git
 , gnugrep
 , fetchFromGitHub
-, installShellFiles
 , lib
 , makeWrapper
 , stdenv
diff --git a/pkgs/tools/graphics/asymptote/default.nix b/pkgs/tools/graphics/asymptote/default.nix
index 795378d370c2..136c46d69cb2 100644
--- a/pkgs/tools/graphics/asymptote/default.nix
+++ b/pkgs/tools/graphics/asymptote/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, fetchurl, fetchpatch
+{ lib, stdenv, fetchFromGitHub
 , autoreconfHook, bison, glm, flex, wrapQtAppsHook, cmake
 , freeglut, ghostscriptX, imagemagick, fftw
 , boehmgc, libGLU, libGL, mesa, ncurses, readline, gsl, libsigsegv
diff --git a/pkgs/tools/graphics/didder/default.nix b/pkgs/tools/graphics/didder/default.nix
index e5acb60586e0..e42a89c72d62 100644
--- a/pkgs/tools/graphics/didder/default.nix
+++ b/pkgs/tools/graphics/didder/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, buildGoModule, fetchFromGitHub, pandoc }:
+{ lib, buildGoModule, fetchFromGitHub, pandoc }:
 
 buildGoModule rec {
   pname = "didder";
diff --git a/pkgs/tools/graphics/glmark2/default.nix b/pkgs/tools/graphics/glmark2/default.nix
index bfcaa7154c0b..cbfdeb22fbcc 100644
--- a/pkgs/tools/graphics/glmark2/default.nix
+++ b/pkgs/tools/graphics/glmark2/default.nix
@@ -8,7 +8,6 @@
 , wayland-scanner
 , libjpeg
 , libpng
-, xorg
 , libX11
 , libGL
 , libdrm
diff --git a/pkgs/tools/graphics/graphviz/default.nix b/pkgs/tools/graphics/graphviz/default.nix
index ab6a5110db45..1b7fd162dba5 100644
--- a/pkgs/tools/graphics/graphviz/default.nix
+++ b/pkgs/tools/graphics/graphviz/default.nix
@@ -1,7 +1,6 @@
 { lib
 , stdenv
 , fetchFromGitLab
-, fetchpatch
 , autoreconfHook
 , pkg-config
 , cairo
diff --git a/pkgs/tools/graphics/realesrgan-ncnn-vulkan/default.nix b/pkgs/tools/graphics/realesrgan-ncnn-vulkan/default.nix
index d7abf3787e4a..20401cd092c6 100644
--- a/pkgs/tools/graphics/realesrgan-ncnn-vulkan/default.nix
+++ b/pkgs/tools/graphics/realesrgan-ncnn-vulkan/default.nix
@@ -3,7 +3,6 @@
 , fetchzip
 , fetchFromGitHub
 , cmake
-, spirv-headers
 , vulkan-headers
 , vulkan-loader
 , glslang
diff --git a/pkgs/tools/graphics/svg2pdf/default.nix b/pkgs/tools/graphics/svg2pdf/default.nix
index 03d372808664..11ee723091bc 100644
--- a/pkgs/tools/graphics/svg2pdf/default.nix
+++ b/pkgs/tools/graphics/svg2pdf/default.nix
@@ -1,7 +1,6 @@
 { lib
-, stdenv
-, fetchCrate
 , rustPlatform
+, fetchCrate
 }:
 
 rustPlatform.buildRustPackage rec {
diff --git a/pkgs/tools/graphics/wkhtmltopdf-bin/default.nix b/pkgs/tools/graphics/wkhtmltopdf-bin/default.nix
index 6f41f2826b2d..29e1d391958f 100644
--- a/pkgs/tools/graphics/wkhtmltopdf-bin/default.nix
+++ b/pkgs/tools/graphics/wkhtmltopdf-bin/default.nix
@@ -4,14 +4,12 @@
 , freetype
 , zlib
 , openssl
-, dpkg
 , fetchurl
 , gcc-unwrapped
 , libjpeg8
 , libpng
 , fontconfig
 , stdenv
-, wkhtmltopdf
 , xar
 , xorg
 }:
diff --git a/pkgs/tools/inputmethods/fcitx5/fcitx5-mozc.nix b/pkgs/tools/inputmethods/fcitx5/fcitx5-mozc.nix
index dce5bd48592c..e58db09f706c 100644
--- a/pkgs/tools/inputmethods/fcitx5/fcitx5-mozc.nix
+++ b/pkgs/tools/inputmethods/fcitx5/fcitx5-mozc.nix
@@ -1,4 +1,4 @@
-{ lib, clangStdenv, fetchFromGitHub, fetchurl, fetchpatch, fetchgit
+{ lib, clangStdenv, fetchFromGitHub, fetchurl, fetchpatch
 , python3Packages, ninja, pkg-config, protobuf, zinnia, qt5, fcitx5
 , jsoncpp, gtest, which, gtk2, unzip, abseil-cpp, breakpad, nixosTests }:
 let
@@ -24,7 +24,7 @@ let
     sha256 = "ExS0Cg3rs0I9IOVbZHLt8UEfk8/LmY9oAHPVVlYuTPw=";
   };
 
-in clangStdenv.mkDerivation rec {
+in clangStdenv.mkDerivation {
   pname = "fcitx5-mozc";
   version = "2.26.4220.102";
 
diff --git a/pkgs/tools/inputmethods/ibus-engines/ibus-bamboo/default.nix b/pkgs/tools/inputmethods/ibus-engines/ibus-bamboo/default.nix
index 26a50951c016..0cb7d845ed45 100644
--- a/pkgs/tools/inputmethods/ibus-engines/ibus-bamboo/default.nix
+++ b/pkgs/tools/inputmethods/ibus-engines/ibus-bamboo/default.nix
@@ -5,7 +5,6 @@
 , xorg
 , pkg-config
 , wrapGAppsHook
-, ibus
 , gtk3
 , go
 }:
diff --git a/pkgs/tools/inputmethods/ibus-engines/ibus-libthai/default.nix b/pkgs/tools/inputmethods/ibus-engines/ibus-libthai/default.nix
index afce1acb6d6e..2e322d24a7ad 100644
--- a/pkgs/tools/inputmethods/ibus-engines/ibus-libthai/default.nix
+++ b/pkgs/tools/inputmethods/ibus-engines/ibus-libthai/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, makeWrapper, pkg-config, ibus, gtk3, libthai }:
+{ lib, stdenv, fetchurl, pkg-config, ibus, gtk3, libthai }:
 
 stdenv.mkDerivation rec {
   pname = "ibus-libthai";
diff --git a/pkgs/tools/inputmethods/input-remapper/default.nix b/pkgs/tools/inputmethods/input-remapper/default.nix
index 092901e08c30..ff2a7363d90e 100644
--- a/pkgs/tools/inputmethods/input-remapper/default.nix
+++ b/pkgs/tools/inputmethods/input-remapper/default.nix
@@ -1,5 +1,4 @@
 { lib
-, python3
 , pkgconfig
 , wrapGAppsHook
 , gettext
diff --git a/pkgs/tools/inputmethods/keyd/default.nix b/pkgs/tools/inputmethods/keyd/default.nix
index ba0c05164435..810ade71bb32 100644
--- a/pkgs/tools/inputmethods/keyd/default.nix
+++ b/pkgs/tools/inputmethods/keyd/default.nix
@@ -1,8 +1,6 @@
 { stdenv
 , lib
 , fetchFromGitHub
-, cmake
-, pkg-config
 , systemd
 , runtimeShell
 , python3
@@ -43,7 +41,7 @@ let
   };
 
 in
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   pname = "keyd";
   inherit version src;
 
diff --git a/pkgs/tools/inputmethods/m17n-lib/default.nix b/pkgs/tools/inputmethods/m17n-lib/default.nix
index 73d7353894fe..c526f6a844d7 100644
--- a/pkgs/tools/inputmethods/m17n-lib/default.nix
+++ b/pkgs/tools/inputmethods/m17n-lib/default.nix
@@ -1,7 +1,6 @@
 { lib
 , stdenv
 , fetchurl
-, fetchpatch
 , m17n_db
 , autoreconfHook
 , pkg-config
diff --git a/pkgs/tools/inputmethods/skk/skk-dicts/default.nix b/pkgs/tools/inputmethods/skk/skk-dicts/default.nix
index bb974fbc8b58..da6074a96a30 100644
--- a/pkgs/tools/inputmethods/skk/skk-dicts/default.nix
+++ b/pkgs/tools/inputmethods/skk/skk-dicts/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, buildPackages, iconv, skktools }:
+{ lib, stdenv, fetchurl, iconv, skktools }:
 
 let
   # kana to kanji