pkgs/*: remove unreferenced function arguments

108 files changed, 111 insertions, 113 deletions

diff --git a/pkgs/development/tools/analysis/qcachegrind/default.nix b/pkgs/development/tools/analysis/qcachegrind/default.nix
index 30d82aca83a..fb0f7414841 100644
--- a/pkgs/development/tools/analysis/qcachegrind/default.nix
+++ b/pkgs/development/tools/analysis/qcachegrind/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, cmake, qmake, qtbase, perl, python, php, kcachegrind, fetchpatch }:
+{ stdenv, qmake, qtbase, perl, python, php, kcachegrind }:
 
 let
   name = stdenv.lib.replaceStrings ["kcachegrind"] ["qcachegrind"] kcachegrind.name;
diff --git a/pkgs/development/tools/analysis/radare/default.nix b/pkgs/development/tools/analysis/radare/default.nix
index b174d6c069b..b9b9b8abfb9 100644
--- a/pkgs/development/tools/analysis/radare/default.nix
+++ b/pkgs/development/tools/analysis/radare/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl, pkgconfig, libusb, readline, lua, libewf, perl,
+{stdenv, fetchurl, pkgconfig, libusb, readline, lua, perl,
 gtk2 ? null, vte ? null, gtkdialog ? null,
 python ? null,
 ruby ? null,
diff --git a/pkgs/development/tools/analysis/valgrind/default.nix b/pkgs/development/tools/analysis/valgrind/default.nix
index 131533896ff..cbcfa981b6b 100644
--- a/pkgs/development/tools/analysis/valgrind/default.nix
+++ b/pkgs/development/tools/analysis/valgrind/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchpatch, perl, gdb, llvm, cctools, xnu, bootstrap_cmds }:
+{ stdenv, fetchurl, perl, gdb, llvm, cctools, xnu, bootstrap_cmds }:
 
 stdenv.mkDerivation rec {
   name = "valgrind-3.13.0";
diff --git a/pkgs/development/tools/backblaze-b2/default.nix b/pkgs/development/tools/backblaze-b2/default.nix
index 5bda2d945eb..19609e15c76 100644
--- a/pkgs/development/tools/backblaze-b2/default.nix
+++ b/pkgs/development/tools/backblaze-b2/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonApplication, fetchFromGitHub, makeWrapper
+{ lib, buildPythonApplication, fetchFromGitHub
 , arrow, futures, logfury, requests, six, tqdm
 }:
 
diff --git a/pkgs/development/tools/bloaty/default.nix b/pkgs/development/tools/bloaty/default.nix
index 953a10ca47a..5f2e9b5f440 100644
--- a/pkgs/development/tools/bloaty/default.nix
+++ b/pkgs/development/tools/bloaty/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, binutils, cmake, zlib, fetchFromGitHub }:
+{ stdenv, cmake, zlib, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
   version = "2018-06-15";
diff --git a/pkgs/development/tools/build-managers/buck/default.nix b/pkgs/development/tools/build-managers/buck/default.nix
index 5d486f47844..e64bf432b38 100644
--- a/pkgs/development/tools/build-managers/buck/default.nix
+++ b/pkgs/development/tools/build-managers/buck/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, jdk, ant, python2, python2Packages, watchman, unzip, bash, makeWrapper }:
+{ stdenv, fetchFromGitHub, jdk, ant, python2, python2Packages, watchman, bash, makeWrapper }:
 
 stdenv.mkDerivation rec {
   name = "buck-${version}";
diff --git a/pkgs/development/tools/build-managers/buildbot/default.nix b/pkgs/development/tools/build-managers/buildbot/default.nix
index 3729abfe247..adb279cdea6 100644
--- a/pkgs/development/tools/build-managers/buildbot/default.nix
+++ b/pkgs/development/tools/build-managers/buildbot/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, openssh, buildbot-worker, buildbot-pkg, pythonPackages, runCommand, makeWrapper }:
+{ stdenv, openssh, buildbot-worker, buildbot-pkg, pythonPackages, runCommand, makeWrapper }:
 
 let
   withPlugins = plugins: runCommand "wrapped-${package.name}" {
diff --git a/pkgs/development/tools/build-managers/cmake/2.8.nix b/pkgs/development/tools/build-managers/cmake/2.8.nix
index f6da92fe621..c61bf3287db 100644
--- a/pkgs/development/tools/build-managers/cmake/2.8.nix
+++ b/pkgs/development/tools/build-managers/cmake/2.8.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchpatch, replace, curl, expat, zlib, bzip2
+{ stdenv, fetchurl, fetchpatch, curl, expat, zlib, bzip2
 , useNcurses ? false, ncurses, useQt4 ? false, qt4, ps
 , buildPlatform, hostPlatform
 }:
diff --git a/pkgs/development/tools/build-managers/conan/default.nix b/pkgs/development/tools/build-managers/conan/default.nix
index 9ff32f1b348..e77647b2fed 100644
--- a/pkgs/development/tools/build-managers/conan/default.nix
+++ b/pkgs/development/tools/build-managers/conan/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchpatch, python }:
+{ lib, python }:
 
 let newPython = python.override {
   packageOverrides = self: super: {
diff --git a/pkgs/development/tools/build-managers/dub/default.nix b/pkgs/development/tools/build-managers/dub/default.nix
index 52e29acc9d8..b9a8c97bd5e 100644
--- a/pkgs/development/tools/build-managers/dub/default.nix
+++ b/pkgs/development/tools/build-managers/dub/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, fetchpatch, curl, dmd, libevent, rsync }:
+{ stdenv, fetchFromGitHub, curl, dmd, libevent, rsync }:
 
 let
 
diff --git a/pkgs/development/tools/build-managers/meson/default.nix b/pkgs/development/tools/build-managers/meson/default.nix
index f14f6adf5fe..3cb906d50ed 100644
--- a/pkgs/development/tools/build-managers/meson/default.nix
+++ b/pkgs/development/tools/build-managers/meson/default.nix
@@ -1,4 +1,4 @@
-{ lib, python3Packages, stdenv, ninja, pkgconfig, targetPlatform, writeTextDir, substituteAll }: let
+{ lib, python3Packages, stdenv, targetPlatform, writeTextDir, substituteAll }: let
   targetPrefix = lib.optionalString stdenv.isCross
                    (targetPlatform.config + "-");
 in python3Packages.buildPythonApplication rec {
diff --git a/pkgs/development/tools/build-managers/nant/default.nix b/pkgs/development/tools/build-managers/nant/default.nix
index 5da32f2334a..c394d87e09e 100644
--- a/pkgs/development/tools/build-managers/nant/default.nix
+++ b/pkgs/development/tools/build-managers/nant/default.nix
@@ -1,4 +1,4 @@
-{ fetchurl, stdenv, fetchFromGitHub, pkgconfig, mono, makeWrapper
+{ stdenv, fetchFromGitHub, pkgconfig, mono, makeWrapper
 , targetVersion ? "4.5" }:
 
 let
diff --git a/pkgs/development/tools/build-managers/pants/default.nix b/pkgs/development/tools/build-managers/pants/default.nix
index 38a197aa900..1ad52f327e1 100644
--- a/pkgs/development/tools/build-managers/pants/default.nix
+++ b/pkgs/development/tools/build-managers/pants/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, pythonPackages, runCommand, curl }:
+{ stdenv, pythonPackages }:
 
 with stdenv.lib;
 with pythonPackages;
diff --git a/pkgs/development/tools/build-managers/rebar3/default.nix b/pkgs/development/tools/build-managers/rebar3/default.nix
index ff6dc07ea9e..d9e260a13de 100644
--- a/pkgs/development/tools/build-managers/rebar3/default.nix
+++ b/pkgs/development/tools/build-managers/rebar3/default.nix
@@ -1,6 +1,6 @@
-{ stdenv, writeText, callPackage, fetchurl,
+{ stdenv, fetchurl,
   fetchHex, erlang, hermeticRebar3 ? true,
-  tree, fetchFromGitHub, hexRegistrySnapshot }:
+  tree, hexRegistrySnapshot }:
 
 let
   version = "3.6.1";
diff --git a/pkgs/development/tools/build-managers/scons/common.nix b/pkgs/development/tools/build-managers/scons/common.nix
index d3842a39f18..4b0242a3956 100644
--- a/pkgs/development/tools/build-managers/scons/common.nix
+++ b/pkgs/development/tools/build-managers/scons/common.nix
@@ -1,6 +1,6 @@
 { version, sha256 }:
 
-{ stdenv, fetchurl, fetchpatch, python2Packages }:
+{ stdenv, fetchurl, python2Packages }:
 
 let name = "scons";
 in python2Packages.buildPythonApplication {
diff --git a/pkgs/development/tools/build-managers/scons/default.nix b/pkgs/development/tools/build-managers/scons/default.nix
index f52d53526fa..3bd31523412 100644
--- a/pkgs/development/tools/build-managers/scons/default.nix
+++ b/pkgs/development/tools/build-managers/scons/default.nix
@@ -1,4 +1,4 @@
-{ callPackage, stdenv }:
+{ callPackage }:
 
 let
   mkScons = args: callPackage (import ./common.nix args) { };
diff --git a/pkgs/development/tools/build-managers/waf/default.nix b/pkgs/development/tools/build-managers/waf/default.nix
index 000943f117f..e86d61cf6c9 100644
--- a/pkgs/development/tools/build-managers/waf/default.nix
+++ b/pkgs/development/tools/build-managers/waf/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, python2 }:
+{ stdenv, fetchurl, python2 }:
 
 stdenv.mkDerivation rec {
   name = "waf-${version}";
diff --git a/pkgs/development/tools/buildah/default.nix b/pkgs/development/tools/buildah/default.nix
index 2dca2b6cd42..95ee4e93f2a 100644
--- a/pkgs/development/tools/buildah/default.nix
+++ b/pkgs/development/tools/buildah/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub, runCommand
+{ stdenv, buildGoPackage, fetchFromGitHub
 , gpgme, libgpgerror, lvm2, btrfs-progs, pkgconfig, ostree, libselinux, libseccomp
 , go-md2man }:
 
diff --git a/pkgs/development/tools/castxml/default.nix b/pkgs/development/tools/castxml/default.nix
index f42adffc5f4..603b155ee4f 100644
--- a/pkgs/development/tools/castxml/default.nix
+++ b/pkgs/development/tools/castxml/default.nix
@@ -1,6 +1,5 @@
 { stdenv, fetchFromGitHub
 , pythonPackages
-, pkgconfig
 , cmake
 , llvmPackages
 , withMan ? true
diff --git a/pkgs/development/tools/chefdk/default.nix b/pkgs/development/tools/chefdk/default.nix
index df06793eaec..1d81d469eb2 100644
--- a/pkgs/development/tools/chefdk/default.nix
+++ b/pkgs/development/tools/chefdk/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, bundlerEnv, ruby_2_4, perl, autoconf }:
+{ lib, bundlerEnv, ruby_2_4, perl, autoconf }:
 
 bundlerEnv {
   # Last updated via:
diff --git a/pkgs/development/tools/compass/default.nix b/pkgs/development/tools/compass/default.nix
index f96d3e810ca..3e3e239fbfb 100644
--- a/pkgs/development/tools/compass/default.nix
+++ b/pkgs/development/tools/compass/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, bundlerEnv, ruby }:
+{ lib, bundlerEnv, ruby }:
 
 bundlerEnv {
   name = "compass-1.0.3";
diff --git a/pkgs/development/tools/container-linux-config-transpiler/default.nix b/pkgs/development/tools/container-linux-config-transpiler/default.nix
index 8d43736d3a8..b2b903b095c 100644
--- a/pkgs/development/tools/container-linux-config-transpiler/default.nix
+++ b/pkgs/development/tools/container-linux-config-transpiler/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchFromGitHub, buildGoPackage }:
+{ lib, fetchFromGitHub, buildGoPackage }:
 
 with lib;
 
diff --git a/pkgs/development/tools/database/liquibase/default.nix b/pkgs/development/tools/database/liquibase/default.nix
index 7f66317167a..46104e78d1d 100644
--- a/pkgs/development/tools/database/liquibase/default.nix
+++ b/pkgs/development/tools/database/liquibase/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, writeText, jre, makeWrapper, fetchMavenArtifact
+{ stdenv, fetchurl, jre, makeWrapper
 , mysqlSupport ? true, mysql_jdbc ? null }:
 
 assert mysqlSupport -> mysql_jdbc != null;
diff --git a/pkgs/development/tools/delve/default.nix b/pkgs/development/tools/delve/default.nix
index 9a7a600d134..b101e52aad9 100644
--- a/pkgs/development/tools/delve/default.nix
+++ b/pkgs/development/tools/delve/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub }:
+{ stdenv, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "delve-${version}";
diff --git a/pkgs/development/tools/devpi-client/default.nix b/pkgs/development/tools/devpi-client/default.nix
index 905314efe5a..26d96a64126 100644
--- a/pkgs/development/tools/devpi-client/default.nix
+++ b/pkgs/development/tools/devpi-client/default.nix
@@ -1,5 +1,4 @@
 { stdenv
-, lib
 , pythonPackages
 , glibcLocales
 , devpi-server
diff --git a/pkgs/development/tools/devpi-server/default.nix b/pkgs/development/tools/devpi-server/default.nix
index 6823ae3372c..f3ade82e52e 100644
--- a/pkgs/development/tools/devpi-server/default.nix
+++ b/pkgs/development/tools/devpi-server/default.nix
@@ -1,4 +1,4 @@
- { stdenv, pythonPackages, glibcLocales, nginx }:
+ { stdenv, pythonPackages, nginx }:
 
 pythonPackages.buildPythonApplication rec {
   name = "${pname}-${version}";
diff --git a/pkgs/development/tools/documentation/gnome-doc-utils/default.nix b/pkgs/development/tools/documentation/gnome-doc-utils/default.nix
index f6920a83e09..7e8a4159072 100644
--- a/pkgs/development/tools/documentation/gnome-doc-utils/default.nix
+++ b/pkgs/development/tools/documentation/gnome-doc-utils/default.nix
@@ -1,5 +1,5 @@
-{stdenv, fetchurl, pkgconfig, libxml2Python, libxslt, intltool
-, makeWrapper, python2Packages }:
+{fetchurl, pkgconfig, libxml2Python, libxslt, intltool
+, python2Packages }:
 
 python2Packages.buildPythonApplication {
   name = "gnome-doc-utils-0.20.10";
diff --git a/pkgs/development/tools/easyjson/default.nix b/pkgs/development/tools/easyjson/default.nix
index 253f5b374d3..de9fb82f66f 100644
--- a/pkgs/development/tools/easyjson/default.nix
+++ b/pkgs/development/tools/easyjson/default.nix
@@ -1,5 +1,5 @@
 # This file was generated by https://github.com/kamilchm/go2nix v1.2.1
-{ stdenv, buildGoPackage, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "easyjson-unstable-${version}";
diff --git a/pkgs/development/tools/egg2nix/chicken-eggs.nix b/pkgs/development/tools/egg2nix/chicken-eggs.nix
index 4ec9e0daa47..1f786f127c9 100644
--- a/pkgs/development/tools/egg2nix/chicken-eggs.nix
+++ b/pkgs/development/tools/egg2nix/chicken-eggs.nix
@@ -1,4 +1,4 @@
-{ pkgs, stdenv }:
+{ pkgs }:
 rec {
   inherit (pkgs) eggDerivation fetchegg;
 
diff --git a/pkgs/development/tools/electron/default.nix b/pkgs/development/tools/electron/default.nix
index 38432e58d0d..695a532305a 100644
--- a/pkgs/development/tools/electron/default.nix
+++ b/pkgs/development/tools/electron/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, libXScrnSaver, makeWrapper, fetchurl, unzip, atomEnv, gtk2 }:
+{ stdenv, libXScrnSaver, makeWrapper, fetchurl, unzip, atomEnv, gtk2 }:
 
 let
   version = "1.8.2";
diff --git a/pkgs/development/tools/erlang/hex2nix/default.nix b/pkgs/development/tools/erlang/hex2nix/default.nix
index 082edb37a4f..e21749f90d0 100644
--- a/pkgs/development/tools/erlang/hex2nix/default.nix
+++ b/pkgs/development/tools/erlang/hex2nix/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, buildRebar3, buildHex,
+{ fetchFromGitHub, buildRebar3,
 
   # Erlang dependencies:
   ibrowse_4_2_2,
diff --git a/pkgs/development/tools/erlang/relx-exe/default.nix b/pkgs/development/tools/erlang/relx-exe/default.nix
index df14c29c372..9bbdc8c8334 100644
--- a/pkgs/development/tools/erlang/relx-exe/default.nix
+++ b/pkgs/development/tools/erlang/relx-exe/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, beamPackages, buildRebar3, buildHex, fetchHex
+{ stdenv, buildHex
 
 , getopt_0_8_2, erlware_commons_1_0_0, cf_0_2_2 }:
 
diff --git a/pkgs/development/tools/fac/default.nix b/pkgs/development/tools/fac/default.nix
index d6cc527e641..18367d14f6e 100644
--- a/pkgs/development/tools/fac/default.nix
+++ b/pkgs/development/tools/fac/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildGoPackage, fetchFromGitHub, fetchurl, makeWrapper, git }:
+{ stdenv, buildGoPackage, fetchFromGitHub, makeWrapper, git }:
 
 buildGoPackage rec {
   name = "fac-${version}";
diff --git a/pkgs/development/tools/git-ftp/default.nix b/pkgs/development/tools/git-ftp/default.nix
index 3d4d542d2f9..4c67a45d8c3 100644
--- a/pkgs/development/tools/git-ftp/default.nix
+++ b/pkgs/development/tools/git-ftp/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, pandoc, man }:
+{ stdenv, fetchFromGitHub, pandoc, man }:
 stdenv.mkDerivation rec {
   name = "git-ftp-${version}";
   version = "1.5.1";
diff --git a/pkgs/development/tools/go-bindata/default.nix b/pkgs/development/tools/go-bindata/default.nix
index 4b87e74a630..9a783deecee 100644
--- a/pkgs/development/tools/go-bindata/default.nix
+++ b/pkgs/development/tools/go-bindata/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "go-bindata-${version}";
diff --git a/pkgs/development/tools/go-outline/default.nix b/pkgs/development/tools/go-outline/default.nix
index fe159c85c3d..5e1cd03e0af 100644
--- a/pkgs/development/tools/go-outline/default.nix
+++ b/pkgs/development/tools/go-outline/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub }:
+{ stdenv, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "go-outline-${version}";
diff --git a/pkgs/development/tools/go-repo-root/default.nix b/pkgs/development/tools/go-repo-root/default.nix
index e47b84354d6..52cd37f9885 100644
--- a/pkgs/development/tools/go-repo-root/default.nix
+++ b/pkgs/development/tools/go-repo-root/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, gotools, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "go-repo-root-${version}";
diff --git a/pkgs/development/tools/go-symbols/default.nix b/pkgs/development/tools/go-symbols/default.nix
index 9a8b592b038..38ceea7d417 100644
--- a/pkgs/development/tools/go-symbols/default.nix
+++ b/pkgs/development/tools/go-symbols/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchgit }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "go-symbols-${version}";
diff --git a/pkgs/development/tools/gocode/default.nix b/pkgs/development/tools/gocode/default.nix
index 2501c36dd5c..a20e1658988 100644
--- a/pkgs/development/tools/gocode/default.nix
+++ b/pkgs/development/tools/gocode/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "gocode-${version}";
diff --git a/pkgs/development/tools/goconvey/default.nix b/pkgs/development/tools/goconvey/default.nix
index e4ef9d26da2..fcdb56460e1 100644
--- a/pkgs/development/tools/goconvey/default.nix
+++ b/pkgs/development/tools/goconvey/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub }:
+{ stdenv, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "goconvey-${version}";
diff --git a/pkgs/development/tools/godef/default.nix b/pkgs/development/tools/godef/default.nix
index 6644c8fcfc4..3227ed8eec2 100644
--- a/pkgs/development/tools/godef/default.nix
+++ b/pkgs/development/tools/godef/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchgit }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "godef-${version}";
diff --git a/pkgs/development/tools/goimports/default.nix b/pkgs/development/tools/goimports/default.nix
index 5c69f34e28b..14c319320d0 100644
--- a/pkgs/development/tools/goimports/default.nix
+++ b/pkgs/development/tools/goimports/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "goimports-${version}";
diff --git a/pkgs/development/tools/golint/default.nix b/pkgs/development/tools/golint/default.nix
index 99f049314ae..a617e582c98 100644
--- a/pkgs/development/tools/golint/default.nix
+++ b/pkgs/development/tools/golint/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "lint-${version}";
diff --git a/pkgs/development/tools/gomodifytags/default.nix b/pkgs/development/tools/gomodifytags/default.nix
index f1452bc1211..86b7246b411 100644
--- a/pkgs/development/tools/gomodifytags/default.nix
+++ b/pkgs/development/tools/gomodifytags/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchgit }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "gomodifytags-${version}";
diff --git a/pkgs/development/tools/gopkgs/default.nix b/pkgs/development/tools/gopkgs/default.nix
index 298657fe38c..ea9c92c0d0a 100644
--- a/pkgs/development/tools/gopkgs/default.nix
+++ b/pkgs/development/tools/gopkgs/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub }:
+{ stdenv, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "gopkgs-${version}";
diff --git a/pkgs/development/tools/gotags/default.nix b/pkgs/development/tools/gotags/default.nix
index ad22d4ea407..b8230561fb4 100644
--- a/pkgs/development/tools/gotags/default.nix
+++ b/pkgs/development/tools/gotags/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "gotags-${version}";
diff --git a/pkgs/development/tools/gotests/default.nix b/pkgs/development/tools/gotests/default.nix
index ccdab780e6c..6c8270f8598 100644
--- a/pkgs/development/tools/gotests/default.nix
+++ b/pkgs/development/tools/gotests/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub }:
+{ stdenv, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "gotests-${version}";
diff --git a/pkgs/development/tools/gotools/default.nix b/pkgs/development/tools/gotools/default.nix
index e9a7e7ac891..4bbb6b0bd4f 100644
--- a/pkgs/development/tools/gotools/default.nix
+++ b/pkgs/development/tools/gotools/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, go, buildGoPackage, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, go, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "gotools-${version}";
diff --git a/pkgs/development/tools/govers/default.nix b/pkgs/development/tools/govers/default.nix
index a80f1569329..440b5e2eb0b 100644
--- a/pkgs/development/tools/govers/default.nix
+++ b/pkgs/development/tools/govers/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "govers-${version}";
diff --git a/pkgs/development/tools/gox/default.nix b/pkgs/development/tools/gox/default.nix
index 65bc55c6d8d..69b20dd3a17 100644
--- a/pkgs/development/tools/gox/default.nix
+++ b/pkgs/development/tools/gox/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub }:
+{ stdenv, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "gox-${version}";
diff --git a/pkgs/development/tools/haskell/hyper-haskell/default.nix b/pkgs/development/tools/haskell/hyper-haskell/default.nix
index 31697750a70..a2a049615b7 100644
--- a/pkgs/development/tools/haskell/hyper-haskell/default.nix
+++ b/pkgs/development/tools/haskell/hyper-haskell/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, writeText, jshon, electron, hyper-haskell-server, extra-packages ? [] }:
+{ stdenv, fetchFromGitHub, jshon, electron, hyper-haskell-server, extra-packages ? [] }:
 
 let
   binPath = stdenv.lib.makeBinPath ([ hyper-haskell-server ] ++ extra-packages);
diff --git a/pkgs/development/tools/haskell/lambdabot/default.nix b/pkgs/development/tools/haskell/lambdabot/default.nix
index edf967f7d11..5e372b4f387 100644
--- a/pkgs/development/tools/haskell/lambdabot/default.nix
+++ b/pkgs/development/tools/haskell/lambdabot/default.nix
@@ -1,4 +1,4 @@
-{ lib, haskellLib, fetchpatch, makeWrapper, haskellPackages
+{ lib, haskellLib, makeWrapper, haskellPackages
 , mueval
 , withDjinn ? true
 , aspell ? null
diff --git a/pkgs/development/tools/haskell/multi-ghc-travis/default.nix b/pkgs/development/tools/haskell/multi-ghc-travis/default.nix
index 88c4fc14a66..30dd7f21791 100644
--- a/pkgs/development/tools/haskell/multi-ghc-travis/default.nix
+++ b/pkgs/development/tools/haskell/multi-ghc-travis/default.nix
@@ -1,6 +1,6 @@
 { mkDerivation, ansi-terminal, base, bytestring, Cabal, containers
 , deepseq, Diff, directory, filepath, ShellCheck, stdenv, tasty
-, tasty-golden, transformers, fetchFromGitHub, fetchpatch
+, tasty-golden, transformers, fetchFromGitHub
 }:
 
 mkDerivation {
diff --git a/pkgs/development/tools/hexio/default.nix b/pkgs/development/tools/hexio/default.nix
index 6511bdd2010..905580482d4 100644
--- a/pkgs/development/tools/hexio/default.nix
+++ b/pkgs/development/tools/hexio/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, fetchurl, python, pcsclite, pth }:
+{ stdenv, fetchFromGitHub, python, pcsclite, pth }:
 
 stdenv.mkDerivation rec {
   pname = "hexio";
diff --git a/pkgs/development/tools/iaca/2.1.nix b/pkgs/development/tools/iaca/2.1.nix
index e71e296212c..b2c764c5a85 100644
--- a/pkgs/development/tools/iaca/2.1.nix
+++ b/pkgs/development/tools/iaca/2.1.nix
@@ -1,4 +1,4 @@
-{ stdenv, makeWrapper, requireFile, patchelf, gcc, unzip }:
+{ stdenv, makeWrapper, requireFile, gcc, unzip }:
 with stdenv.lib;
 
 # v2.1: last version with NHM/WSM arch support
diff --git a/pkgs/development/tools/iaca/3.0.nix b/pkgs/development/tools/iaca/3.0.nix
index af738bc71a9..34b9e1df190 100644
--- a/pkgs/development/tools/iaca/3.0.nix
+++ b/pkgs/development/tools/iaca/3.0.nix
@@ -1,4 +1,4 @@
-{ stdenv, requireFile, patchelf, unzip }:
+{ stdenv, requireFile, unzip }:
 with stdenv.lib;
 
 stdenv.mkDerivation {
diff --git a/pkgs/development/tools/irony-server/default.nix b/pkgs/development/tools/irony-server/default.nix
index e2aa27a96eb..b6a78071bc8 100644
--- a/pkgs/development/tools/irony-server/default.nix
+++ b/pkgs/development/tools/irony-server/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, cmake, llvmPackages, irony }:
+{ stdenv, cmake, llvmPackages, irony }:
 
 stdenv.mkDerivation rec {
   name = "irony-server-${version}";
diff --git a/pkgs/development/tools/jmespath/default.nix b/pkgs/development/tools/jmespath/default.nix
index dd0379e83a7..c53d6608efd 100644
--- a/pkgs/development/tools/jmespath/default.nix
+++ b/pkgs/development/tools/jmespath/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub }:
+{ stdenv, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "jmespath-${version}";
diff --git a/pkgs/development/tools/jp/default.nix b/pkgs/development/tools/jp/default.nix
index d46f7b3e883..e8e8acd6a9a 100644
--- a/pkgs/development/tools/jp/default.nix
+++ b/pkgs/development/tools/jp/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub, jmespath }:
+{ stdenv, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "jp-${version}";
diff --git a/pkgs/development/tools/json2hcl/default.nix b/pkgs/development/tools/json2hcl/default.nix
index d53b3902133..694428f55a6 100644
--- a/pkgs/development/tools/json2hcl/default.nix
+++ b/pkgs/development/tools/json2hcl/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub }:
+{ lib, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   pname = "json2hcl";
diff --git a/pkgs/development/tools/kube-aws/default.nix b/pkgs/development/tools/kube-aws/default.nix
index 11f4a5c8bd0..af5c0e9c2f9 100644
--- a/pkgs/development/tools/kube-aws/default.nix
+++ b/pkgs/development/tools/kube-aws/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchFromGitHub, buildGoPackage }:
+{ lib, fetchFromGitHub, buildGoPackage }:
 
 with lib;
 
diff --git a/pkgs/development/tools/leaps/default.nix b/pkgs/development/tools/leaps/default.nix
index 9e41ef38131..afac17b5251 100644
--- a/pkgs/development/tools/leaps/default.nix
+++ b/pkgs/development/tools/leaps/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildGoPackage, fetchFromGitHub, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "leaps-${version}";
diff --git a/pkgs/development/tools/librarian-puppet-go/default.nix b/pkgs/development/tools/librarian-puppet-go/default.nix
index 8adea820ec7..58f50dd2f7e 100644
--- a/pkgs/development/tools/librarian-puppet-go/default.nix
+++ b/pkgs/development/tools/librarian-puppet-go/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchFromGitHub, buildGoPackage }:
+{ lib, fetchFromGitHub, buildGoPackage }:
 
 buildGoPackage rec {
   name = "librarian-puppet-go-${version}";
diff --git a/pkgs/development/tools/manul/default.nix b/pkgs/development/tools/manul/default.nix
index c4df52da170..a5dd0a88272 100644
--- a/pkgs/development/tools/manul/default.nix
+++ b/pkgs/development/tools/manul/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub }:
+{ stdenv, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "manul-unstable-2016-09-30";
diff --git a/pkgs/development/tools/misc/autogen/default.nix b/pkgs/development/tools/misc/autogen/default.nix
index 660917ee9f1..265d425bbcf 100644
--- a/pkgs/development/tools/misc/autogen/default.nix
+++ b/pkgs/development/tools/misc/autogen/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPackages, fetchurl, which, pkgconfig, texinfo, perl, guile, libxml2 }:
+{ stdenv, buildPackages, fetchurl, which, pkgconfig, perl, guile, libxml2 }:
 
 stdenv.mkDerivation rec {
   name = "autogen-${version}";
diff --git a/pkgs/development/tools/misc/automake/automake-1.16.x.nix b/pkgs/development/tools/misc/automake/automake-1.16.x.nix
index affc400a9ed..6646b847252 100644
--- a/pkgs/development/tools/misc/automake/automake-1.16.x.nix
+++ b/pkgs/development/tools/misc/automake/automake-1.16.x.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, perl, autoconf, makeWrapper, doCheck ? false }:
+{ stdenv, fetchurl, perl, autoconf, doCheck ? false }:
 
 stdenv.mkDerivation rec {
   name = "automake-1.16.1";
diff --git a/pkgs/development/tools/misc/binutils/default.nix b/pkgs/development/tools/misc/binutils/default.nix
index 0b71c6719dc..df4d0e3f47d 100644
--- a/pkgs/development/tools/misc/binutils/default.nix
+++ b/pkgs/development/tools/misc/binutils/default.nix
@@ -1,6 +1,6 @@
 { stdenv, buildPackages
 , fetchurl, zlib, autoreconfHook264
-, buildPlatform, hostPlatform, targetPlatform
+, hostPlatform, targetPlatform
 , noSysDirs, gold ? true, bison ? null
 }:
 
diff --git a/pkgs/development/tools/misc/blackmagic/default.nix b/pkgs/development/tools/misc/blackmagic/default.nix
index ab84cb37656..2d7225ee03e 100644
--- a/pkgs/development/tools/misc/blackmagic/default.nix
+++ b/pkgs/development/tools/misc/blackmagic/default.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, fetchFromGitHub
-, gcc-arm-embedded, bash, libftdi
+, gcc-arm-embedded, libftdi
 , python, pythonPackages
 }:
 
diff --git a/pkgs/development/tools/misc/cbrowser/default.nix b/pkgs/development/tools/misc/cbrowser/default.nix
index 51610349c45..6519f349bfc 100644
--- a/pkgs/development/tools/misc/cbrowser/default.nix
+++ b/pkgs/development/tools/misc/cbrowser/default.nix
@@ -1,4 +1,4 @@
-{ fetchurl, stdenv, cscope, tk, makeWrapper }:
+{ fetchurl, stdenv, tk, makeWrapper }:
 
 stdenv.mkDerivation rec {
   name = "cbrowser-0.8";
diff --git a/pkgs/development/tools/misc/ccache/default.nix b/pkgs/development/tools/misc/ccache/default.nix
index 34d1d8a829b..c5cb277c256 100644
--- a/pkgs/development/tools/misc/ccache/default.nix
+++ b/pkgs/development/tools/misc/ccache/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchpatch, runCommand, perl, zlib, makeWrapper }:
+{ stdenv, fetchurl, perl, zlib, makeWrapper }:
 
 let ccache = stdenv.mkDerivation rec {
   name = "ccache-${version}";
diff --git a/pkgs/development/tools/misc/cquery/default.nix b/pkgs/development/tools/misc/cquery/default.nix
index bf979767126..0b86deb5205 100644
--- a/pkgs/development/tools/misc/cquery/default.nix
+++ b/pkgs/development/tools/misc/cquery/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, makeWrapper
+{ fetchFromGitHub, makeWrapper
 , cmake, llvmPackages, ncurses }:
 
 let
diff --git a/pkgs/development/tools/misc/ctags/wrapped.nix b/pkgs/development/tools/misc/ctags/wrapped.nix
index 4df04f44f56..75ae9f1ba8b 100644
--- a/pkgs/development/tools/misc/ctags/wrapped.nix
+++ b/pkgs/development/tools/misc/ctags/wrapped.nix
@@ -1,4 +1,4 @@
-{ pkgs, ctags, writeScriptBin }:
+{ pkgs, ctags }:
 
 with pkgs.stdenv.lib;
 
diff --git a/pkgs/development/tools/misc/dialog/default.nix b/pkgs/development/tools/misc/dialog/default.nix
index 09d1276ed42..591254c73f5 100644
--- a/pkgs/development/tools/misc/dialog/default.nix
+++ b/pkgs/development/tools/misc/dialog/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, ncurses, gettext
+{ stdenv, fetchurl, ncurses
 , withLibrary ? false, libtool
 , unicodeSupport ? true
 }:
diff --git a/pkgs/development/tools/misc/fswatch/default.nix b/pkgs/development/tools/misc/fswatch/default.nix
index 4d8a9b05847..a1f33fdfc9e 100644
--- a/pkgs/development/tools/misc/fswatch/default.nix
+++ b/pkgs/development/tools/misc/fswatch/default.nix
@@ -1,7 +1,7 @@
 { stdenv
 , fetchFromGitHub
 , autoreconfHook
-, findutils                     # for xargs
+                     # for xargs
 , gettext
 , libtool
 , makeWrapper
diff --git a/pkgs/development/tools/misc/global/default.nix b/pkgs/development/tools/misc/global/default.nix
index 296d9673d8f..f0f21f8f4d5 100644
--- a/pkgs/development/tools/misc/global/default.nix
+++ b/pkgs/development/tools/misc/global/default.nix
@@ -1,5 +1,5 @@
 { fetchurl, stdenv, libtool, makeWrapper
-, coreutils, ctags, ncurses, pythonPackages, sqlite, universal-ctags, pkgconfig
+, coreutils, ctags, ncurses, pythonPackages, sqlite, universal-ctags
 }:
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/development/tools/misc/hydra/default.nix b/pkgs/development/tools/misc/hydra/default.nix
index 4fdd017306a..cf516b16f4b 100644
--- a/pkgs/development/tools/misc/hydra/default.nix
+++ b/pkgs/development/tools/misc/hydra/default.nix
@@ -1,9 +1,9 @@
 { stdenv, nix, perlPackages, buildEnv, releaseTools, fetchFromGitHub
 , makeWrapper, autoconf, automake, libtool, unzip, pkgconfig, sqlite, libpqxx
 , gitAndTools, mercurial, darcs, subversion, bazaar, openssl, bzip2, libxslt
-, guile, perl, postgresql, aws-sdk-cpp, nukeReferences, git, boehmgc
+, guile, perl, postgresql, nukeReferences, git, boehmgc
 , docbook_xsl, openssh, gnused, coreutils, findutils, gzip, lzma, gnutar
-, rpm, dpkg, cdrkit, fetchpatch, pixz }:
+, rpm, dpkg, cdrkit, pixz }:
 
 with stdenv;
 
diff --git a/pkgs/development/tools/misc/intel-gpu-tools/default.nix b/pkgs/development/tools/misc/intel-gpu-tools/default.nix
index 08729f6b41b..d92b20a12b0 100644
--- a/pkgs/development/tools/misc/intel-gpu-tools/default.nix
+++ b/pkgs/development/tools/misc/intel-gpu-tools/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchurl, pkgconfig, libdrm, libpciaccess, cairo, dri2proto, udev
 , libX11, libXext, libXv, libXrandr, glib, bison, libunwind, python3, kmod
-, procps, autoreconfHook, utilmacros, gnome2 }:
+, procps, utilmacros, gnome2 }:
 
 stdenv.mkDerivation rec {
   name = "intel-gpu-tools-1.22";
diff --git a/pkgs/development/tools/misc/linuxkit/default.nix b/pkgs/development/tools/misc/linuxkit/default.nix
index 71bc3b87a7a..27f49ebcf38 100644
--- a/pkgs/development/tools/misc/linuxkit/default.nix
+++ b/pkgs/development/tools/misc/linuxkit/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildGoPackage, go, fetchFromGitHub }:
+{ lib, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "linuxkit-${version}";
diff --git a/pkgs/development/tools/misc/loccount/default.nix b/pkgs/development/tools/misc/loccount/default.nix
index 9205f6caf0d..017c6ad8049 100644
--- a/pkgs/development/tools/misc/loccount/default.nix
+++ b/pkgs/development/tools/misc/loccount/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitLab }:
+{ stdenv, buildGoPackage, fetchFromGitLab }:
 buildGoPackage rec {
   name = "loccount-${version}";
   version = "1.2";
diff --git a/pkgs/development/tools/misc/md2man/default.nix b/pkgs/development/tools/misc/md2man/default.nix
index 208f0ebd411..23b7119e7d7 100644
--- a/pkgs/development/tools/misc/md2man/default.nix
+++ b/pkgs/development/tools/misc/md2man/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, go, fetchFromGitHub }:
+{ lib, buildGoPackage, fetchFromGitHub }:
 
 with lib;
 
diff --git a/pkgs/development/tools/misc/moby/default.nix b/pkgs/development/tools/misc/moby/default.nix
index e6f7ac3290b..c45e7841d45 100644
--- a/pkgs/development/tools/misc/moby/default.nix
+++ b/pkgs/development/tools/misc/moby/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildGoPackage, go, fetchFromGitHub }:
+{ lib, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "moby-${version}";
diff --git a/pkgs/development/tools/misc/pkgconfig/default.nix b/pkgs/development/tools/misc/pkgconfig/default.nix
index 219281f4ec1..7235af49c2e 100644
--- a/pkgs/development/tools/misc/pkgconfig/default.nix
+++ b/pkgs/development/tools/misc/pkgconfig/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl, automake, libiconv, vanilla ? false }:
+{stdenv, fetchurl, libiconv, vanilla ? false }:
 
 with stdenv.lib;
 
diff --git a/pkgs/development/tools/misc/stm32flash/default.nix b/pkgs/development/tools/misc/stm32flash/default.nix
index 3da98f38ebc..553ded815ef 100644
--- a/pkgs/development/tools/misc/stm32flash/default.nix
+++ b/pkgs/development/tools/misc/stm32flash/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, unzip }:
+{ stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
   name = "stm32flash-0.5";
diff --git a/pkgs/development/tools/misc/swig/3.x.nix b/pkgs/development/tools/misc/swig/3.x.nix
index 9b4fd05dc0a..48a2e7bd2cb 100644
--- a/pkgs/development/tools/misc/swig/3.x.nix
+++ b/pkgs/development/tools/misc/swig/3.x.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, autoconf, automake, libtool, bison, pcre }:
+{ stdenv, fetchFromGitHub, autoconf, automake, libtool, bison, pcre }:
 
 stdenv.mkDerivation rec {
   name = "swig-${version}";
diff --git a/pkgs/development/tools/misc/teensy-loader-cli/default.nix b/pkgs/development/tools/misc/teensy-loader-cli/default.nix
index 4263b80789a..d6c5256ca84 100644
--- a/pkgs/development/tools/misc/teensy-loader-cli/default.nix
+++ b/pkgs/development/tools/misc/teensy-loader-cli/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, unzip, libusb, fetchgit }:
+{ stdenv, unzip, libusb, fetchgit }:
 let
   version = "2.1";
 in
diff --git a/pkgs/development/tools/misc/trv/default.nix b/pkgs/development/tools/misc/trv/default.nix
index c8747e66e39..11caf8e7b20 100644
--- a/pkgs/development/tools/misc/trv/default.nix
+++ b/pkgs/development/tools/misc/trv/default.nix
@@ -1,6 +1,6 @@
 {stdenv, fetchFromGitHub, ocaml, findlib, camlp4, core_p4, async_p4, async_unix_p4
 , re2_p4, async_extra_p4, sexplib_p4, async_shell, core_extended_p4, async_find
-, cohttp, conduit, magic-mime, tzdata
+, cohttp, conduit, magic-mime
 }:
 
 assert stdenv.lib.versionOlder "4.02" ocaml.version;
diff --git a/pkgs/development/tools/nailgun/default.nix b/pkgs/development/tools/nailgun/default.nix
index dea1ab2a445..6a34c1c130d 100644
--- a/pkgs/development/tools/nailgun/default.nix
+++ b/pkgs/development/tools/nailgun/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchMavenArtifact, fetchFromGitHub, bash, jre, makeWrapper }:
+{ stdenv, fetchMavenArtifact, fetchFromGitHub, jre, makeWrapper }:
 
 let
   version = "0.9.1";
diff --git a/pkgs/development/tools/node-webkit/nw12.nix b/pkgs/development/tools/node-webkit/nw12.nix
index f09dbfdb165..df7630e2d16 100644
--- a/pkgs/development/tools/node-webkit/nw12.nix
+++ b/pkgs/development/tools/node-webkit/nw12.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchurl, buildEnv, makeWrapper
 , xorg, alsaLib, dbus, glib, gtk2, atk, pango, freetype, fontconfig
-, gdk_pixbuf, cairo, zlib, nss, nssTools, nspr, gconf, expat, systemd, libcap
+, gdk_pixbuf, cairo, nss, nspr, gconf, expat, systemd, libcap
 , libnotify}:
 let
   bits = if stdenv.system == "x86_64-linux" then "x64"
diff --git a/pkgs/development/tools/nwjs/default.nix b/pkgs/development/tools/nwjs/default.nix
index fc1513ecf34..6840bcac0dc 100644
--- a/pkgs/development/tools/nwjs/default.nix
+++ b/pkgs/development/tools/nwjs/default.nix
@@ -1,9 +1,9 @@
 { stdenv, fetchurl, buildEnv, makeWrapper
 
-, xorg, alsaLib, dbus, glib, gtk2, gtk3, atk, pango, freetype, fontconfig
-, gdk_pixbuf, cairo, zlib, nss, nssTools, nspr, gconf, expat, systemd, libcap
+, xorg, alsaLib, dbus, glib, gtk3, atk, pango, freetype, fontconfig
+, gdk_pixbuf, cairo, nss, nspr, gconf, expat, systemd, libcap
 , libnotify
-, ffmpeg, libxcb, libXScrnSaver, cups
+, ffmpeg, libxcb, cups
 , sqlite, udev
 }:
 let
diff --git a/pkgs/development/tools/ocaml/camlidl/default.nix b/pkgs/development/tools/ocaml/camlidl/default.nix
index 7cdf7dc9396..7c7bf79acc7 100644
--- a/pkgs/development/tools/ocaml/camlidl/default.nix
+++ b/pkgs/development/tools/ocaml/camlidl/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, makeWrapper, ocaml, ncurses, writeText }:
+{ stdenv, fetchurl, ocaml, writeText }:
 
 let
   pname = "camlidl";
diff --git a/pkgs/development/tools/ocaml/opam/default.nix b/pkgs/development/tools/ocaml/opam/default.nix
index aa9feda985a..73b7da119ab 100644
--- a/pkgs/development/tools/ocaml/opam/default.nix
+++ b/pkgs/development/tools/ocaml/opam/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchgit, fetchurl, makeWrapper,
+{ stdenv, lib, fetchurl, makeWrapper,
   ocaml, unzip, ncurses, curl, aspcud
 }:
 
diff --git a/pkgs/development/tools/ocaml/utop/default.nix b/pkgs/development/tools/ocaml/utop/default.nix
index 340c57f2817..74f450a9e3a 100644
--- a/pkgs/development/tools/ocaml/utop/default.nix
+++ b/pkgs/development/tools/ocaml/utop/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, bash, ocaml, findlib, ocamlbuild, jbuilder
+{ stdenv, fetchurl, ocaml, findlib, ocamlbuild, jbuilder
 , lambdaTerm, cppo, makeWrapper
 }:
 
diff --git a/pkgs/development/tools/parsing/bison/3.x.nix b/pkgs/development/tools/parsing/bison/3.x.nix
index 287bb8beb52..469e64acff0 100644
--- a/pkgs/development/tools/parsing/bison/3.x.nix
+++ b/pkgs/development/tools/parsing/bison/3.x.nix
@@ -1,4 +1,4 @@
-{ stdenv, hostPlatform, fetchurl, m4, perl, help2man }:
+{ stdenv, fetchurl, m4, perl, help2man }:
 
 stdenv.mkDerivation rec {
   name = "bison-3.0.5";
diff --git a/pkgs/development/tools/parsing/hammer/default.nix b/pkgs/development/tools/parsing/hammer/default.nix
index 27596878f34..86c1f82678a 100644
--- a/pkgs/development/tools/parsing/hammer/default.nix
+++ b/pkgs/development/tools/parsing/hammer/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, glib, pkgconfig, python, scons, pythonPackages }:
+{ stdenv, fetchgit, glib, pkgconfig, python, scons }:
 
 stdenv.mkDerivation rec {
   name = "hammer-${version}";
diff --git a/pkgs/development/tools/quicktemplate/default.nix b/pkgs/development/tools/quicktemplate/default.nix
index 614ffe5e218..624866ea9e3 100644
--- a/pkgs/development/tools/quicktemplate/default.nix
+++ b/pkgs/development/tools/quicktemplate/default.nix
@@ -1,5 +1,5 @@
 # This file was generated by https://github.com/kamilchm/go2nix v1.2.1
-{ stdenv, buildGoPackage, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "quicktemplate-unstable-${version}";
diff --git a/pkgs/development/tools/redis-dump/default.nix b/pkgs/development/tools/redis-dump/default.nix
index 88c975b5735..55797948a84 100644
--- a/pkgs/development/tools/redis-dump/default.nix
+++ b/pkgs/development/tools/redis-dump/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, bundlerEnv, ruby, perl, autoconf }:
+{ lib, bundlerEnv, ruby, perl, autoconf }:
 
 bundlerEnv {
   name = "redis-dump-0.3.5";
diff --git a/pkgs/development/tools/rtags/default.nix b/pkgs/development/tools/rtags/default.nix
index a2c75a02aa2..da3b27ebacc 100644
--- a/pkgs/development/tools/rtags/default.nix
+++ b/pkgs/development/tools/rtags/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchgit, cmake, llvmPackages, openssl, writeScript, apple_sdk, bash, emacs, pkgconfig }:
+{ stdenv, lib, fetchgit, cmake, llvmPackages, openssl, apple_sdk, emacs, pkgconfig }:
 
 stdenv.mkDerivation rec {
   name = "rtags-${version}";
diff --git a/pkgs/development/tools/rubocop/default.nix b/pkgs/development/tools/rubocop/default.nix
index 850fb5ad7f5..2b9792e4df2 100644
--- a/pkgs/development/tools/rubocop/default.nix
+++ b/pkgs/development/tools/rubocop/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, bundlerEnv, ruby, makeWrapper }:
+{ lib, bundlerEnv, ruby }:
 
 bundlerEnv rec {
   pname = "rubocop";
diff --git a/pkgs/development/tools/rust/rainicorn/default.nix b/pkgs/development/tools/rust/rainicorn/default.nix
index 370318d1ff2..50c890e3c47 100644
--- a/pkgs/development/tools/rust/rainicorn/default.nix
+++ b/pkgs/development/tools/rust/rainicorn/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, rustPlatform, makeWrapper }:
+{ stdenv, fetchFromGitHub, rustPlatform }:
 
 with rustPlatform;
 
diff --git a/pkgs/development/tools/selenium/server/default.nix b/pkgs/development/tools/selenium/server/default.nix
index c3d71e2b2a3..48bfbdd689b 100644
--- a/pkgs/development/tools/selenium/server/default.nix
+++ b/pkgs/development/tools/selenium/server/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, makeWrapper, jre, jdk, gcc, xorg
+{ stdenv, fetchurl, makeWrapper, jre
 , htmlunit-driver, chromedriver, chromeSupport ? true }:
 
 with stdenv.lib;
diff --git a/pkgs/development/tools/slimerjs/default.nix b/pkgs/development/tools/slimerjs/default.nix
index 041aee7a1c5..534c69200e0 100644
--- a/pkgs/development/tools/slimerjs/default.nix
+++ b/pkgs/development/tools/slimerjs/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl, fetchgit, fetchFromGitHub, zip, unzip, firefox, bash}:
+{stdenv, fetchFromGitHub, zip, unzip, firefox, bash}:
 let
   s = # Generated upstream information
   rec {
diff --git a/pkgs/development/tools/textql/default.nix b/pkgs/development/tools/textql/default.nix
index f6687f4e432..a3499258a99 100644
--- a/pkgs/development/tools/textql/default.nix
+++ b/pkgs/development/tools/textql/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub, sqlite }:
+{ stdenv, buildGoPackage, fetchFromGitHub, sqlite }:
 
 buildGoPackage rec {
   name = "textql-${version}";
diff --git a/pkgs/development/tools/vim-vint/default.nix b/pkgs/development/tools/vim-vint/default.nix
index 0db25f88d76..ab90bb27bd5 100644
--- a/pkgs/development/tools/vim-vint/default.nix
+++ b/pkgs/development/tools/vim-vint/default.nix
@@ -1,4 +1,4 @@
-{ fetchFromGitHub, lib, python3Packages, stdenv }:
+{ fetchFromGitHub, lib, python3Packages }:
 
 with python3Packages;
 
diff --git a/pkgs/development/tools/vndr/default.nix b/pkgs/development/tools/vndr/default.nix
index 2a4ddaf8039..0fbcd7b71a6 100644
--- a/pkgs/development/tools/vndr/default.nix
+++ b/pkgs/development/tools/vndr/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchFromGitHub }:
+{ lib, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "vndr-${version}";
diff --git a/pkgs/development/tools/ws/default.nix b/pkgs/development/tools/ws/default.nix
index b99780d4138..17c64f0548b 100644
--- a/pkgs/development/tools/ws/default.nix
+++ b/pkgs/development/tools/ws/default.nix
@@ -1,5 +1,5 @@
 # This file was generated by https://github.com/kamilchm/go2nix v1.2.1
-{ stdenv, buildGoPackage, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, buildGoPackage, fetchgit }:
 
 buildGoPackage rec {
   name = "ws-${version}";
diff --git a/pkgs/development/tools/xcbuild/wrapper.nix b/pkgs/development/tools/xcbuild/wrapper.nix
index f8b1c1bf31e..6a3267b7c34 100644
--- a/pkgs/development/tools/xcbuild/wrapper.nix
+++ b/pkgs/development/tools/xcbuild/wrapper.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildPackages, makeWrapper, writeText, runCommand
+{ lib, buildPackages, makeWrapper, writeText, runCommand
 , CoreServices, ImageIO, CoreGraphics
 , targetPlatform
 , xcodePlatform ? targetPlatform.xcodePlatform or "MacOSX"
diff --git a/pkgs/development/tools/xib2nib/default.nix b/pkgs/development/tools/xib2nib/default.nix
index d585a35b0bc..4d62f5b8571 100644
--- a/pkgs/development/tools/xib2nib/default.nix
+++ b/pkgs/development/tools/xib2nib/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, callPackage, fetchFromGitHub, pugixml, boost, PlistCpp }:
+{ stdenv, fetchFromGitHub, pugixml, boost, PlistCpp }:
 
 stdenv.mkDerivation {
   name = "xib2nib-730e177";
diff --git a/pkgs/development/tools/yq/default.nix b/pkgs/development/tools/yq/default.nix
index 52231d0a831..a08e01a48b7 100644
--- a/pkgs/development/tools/yq/default.nix
+++ b/pkgs/development/tools/yq/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildPythonApplication, fetchPypi, pyyaml, xmltodict, jq }:
+{ lib, buildPythonApplication, fetchPypi, pyyaml, xmltodict, jq }:
 
 buildPythonApplication rec {
   pname = "yq";