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-rw-r--r--pkgs/development/compilers/boo/default.nix5
-rw-r--r--pkgs/development/compilers/chicken/eggDerivation.nix2
-rw-r--r--pkgs/development/compilers/clasp/default.nix2
-rw-r--r--pkgs/development/compilers/cudatoolkit/default.nix2
-rw-r--r--pkgs/development/compilers/dotnet/sdk/default.nix1
-rw-r--r--pkgs/development/compilers/elm/default.nix2
-rw-r--r--pkgs/development/compilers/emscripten/default.nix4
-rw-r--r--pkgs/development/compilers/emscripten/fastcomp/emscripten-fastcomp.nix2
-rw-r--r--pkgs/development/compilers/factor-lang/default.nix2
-rw-r--r--pkgs/development/compilers/gambit/build.nix2
-rw-r--r--pkgs/development/compilers/gambit/default.nix1
-rw-r--r--pkgs/development/compilers/gambit/unstable.nix1
-rw-r--r--pkgs/development/compilers/gcc/4.8/default.nix1
-rw-r--r--pkgs/development/compilers/gcc/4.9/default.nix1
-rw-r--r--pkgs/development/compilers/gcc/5/default.nix1
-rw-r--r--pkgs/development/compilers/gcc/6/default.nix1
-rw-r--r--pkgs/development/compilers/gcc/7/default.nix1
-rw-r--r--pkgs/development/compilers/gcc/8/default.nix3
-rw-r--r--pkgs/development/compilers/gcc/snapshot/default.nix1
-rw-r--r--pkgs/development/compilers/gcl/2.6.13-pre.nix2
-rw-r--r--pkgs/development/compilers/gcl/default.nix2
-rw-r--r--pkgs/development/compilers/gerbil/build.nix2
-rw-r--r--pkgs/development/compilers/ghc/7.10.3.nix4
-rw-r--r--pkgs/development/compilers/ghc/8.0.2.nix2
-rw-r--r--pkgs/development/compilers/ghc/8.2.2.nix2
-rw-r--r--pkgs/development/compilers/ghc/8.4.3.nix2
-rw-r--r--pkgs/development/compilers/ghc/8.6.1.nix4
-rw-r--r--pkgs/development/compilers/ghc/head.nix2
-rw-r--r--pkgs/development/compilers/ghcjs-ng/configured-ghcjs-src.nix1
-rw-r--r--pkgs/development/compilers/ghcjs/base.nix7
-rw-r--r--pkgs/development/compilers/go/1.10.nix2
-rw-r--r--pkgs/development/compilers/go/1.9.nix2
-rw-r--r--pkgs/development/compilers/graalvm/default.nix2
-rw-r--r--pkgs/development/compilers/haxe/default.nix2
-rw-r--r--pkgs/development/compilers/inform7/default.nix2
-rw-r--r--pkgs/development/compilers/ios-cross-compile/9.2.nix2
-rw-r--r--pkgs/development/compilers/ispc/default.nix2
-rw-r--r--pkgs/development/compilers/julia/0.5.nix5
-rw-r--r--pkgs/development/compilers/julia/0.6.nix5
-rw-r--r--pkgs/development/compilers/julia/default.nix2
-rw-r--r--pkgs/development/compilers/ldc/default.nix2
-rw-r--r--pkgs/development/compilers/llvm/3.4/llvm.nix1
-rw-r--r--pkgs/development/compilers/llvm/3.5/dragonegg.nix2
-rw-r--r--pkgs/development/compilers/llvm/3.7/default.nix4
-rw-r--r--pkgs/development/compilers/llvm/3.7/llvm.nix1
-rw-r--r--pkgs/development/compilers/llvm/3.8/default.nix2
-rw-r--r--pkgs/development/compilers/llvm/3.8/llvm.nix1
-rw-r--r--pkgs/development/compilers/llvm/3.9/default.nix2
-rw-r--r--pkgs/development/compilers/llvm/3.9/llvm.nix2
-rw-r--r--pkgs/development/compilers/llvm/4/default.nix3
-rw-r--r--pkgs/development/compilers/llvm/4/libc++/default.nix2
-rw-r--r--pkgs/development/compilers/llvm/4/lld.nix2
-rw-r--r--pkgs/development/compilers/llvm/4/llvm.nix2
-rw-r--r--pkgs/development/compilers/llvm/4/openmp.nix1
-rw-r--r--pkgs/development/compilers/llvm/5/clang/default.nix2
-rw-r--r--pkgs/development/compilers/llvm/5/default.nix3
-rw-r--r--pkgs/development/compilers/llvm/5/libc++/default.nix2
-rw-r--r--pkgs/development/compilers/llvm/5/lld.nix2
-rw-r--r--pkgs/development/compilers/llvm/5/llvm.nix3
-rw-r--r--pkgs/development/compilers/llvm/5/openmp.nix1
-rw-r--r--pkgs/development/compilers/llvm/6/clang/default.nix2
-rw-r--r--pkgs/development/compilers/llvm/6/default.nix3
-rw-r--r--pkgs/development/compilers/llvm/6/libc++/default.nix2
-rw-r--r--pkgs/development/compilers/llvm/6/lld.nix1
-rw-r--r--pkgs/development/compilers/llvm/6/llvm.nix3
-rw-r--r--pkgs/development/compilers/llvm/6/openmp.nix1
-rw-r--r--pkgs/development/compilers/matter-compiler/default.nix2
-rw-r--r--pkgs/development/compilers/mcpp/default.nix2
-rw-r--r--pkgs/development/compilers/mono/4.0.nix2
-rw-r--r--pkgs/development/compilers/mono/4.4.nix2
-rw-r--r--pkgs/development/compilers/mono/4.6.nix2
-rw-r--r--pkgs/development/compilers/mono/4.8.nix2
-rw-r--r--pkgs/development/compilers/mono/5.0.nix2
-rw-r--r--pkgs/development/compilers/mono/5.4.nix2
-rw-r--r--pkgs/development/compilers/mono/5.8.nix2
-rw-r--r--pkgs/development/compilers/nvidia-cg-toolkit/default.nix2
-rw-r--r--pkgs/development/compilers/obliv-c/default.nix2
-rw-r--r--pkgs/development/compilers/openjdk/10.nix2
-rw-r--r--pkgs/development/compilers/openjdk/bootstrap.nix2
-rw-r--r--pkgs/development/compilers/oraclejdk/jdk10-linux.nix2
-rw-r--r--pkgs/development/compilers/pakcs/default.nix4
-rw-r--r--pkgs/development/compilers/rust/binaryBuild.nix2
-rw-r--r--pkgs/development/compilers/rust/cargo.nix2
-rw-r--r--pkgs/development/compilers/souffle/default.nix2
-rw-r--r--pkgs/development/compilers/swift/default.nix1
-rw-r--r--pkgs/development/compilers/urweb/default.nix2
86 files changed, 70 insertions, 114 deletions
diff --git a/pkgs/development/compilers/boo/default.nix b/pkgs/development/compilers/boo/default.nix
index 968c845a011..ec5e08ffda4 100644
--- a/pkgs/development/compilers/boo/default.nix
+++ b/pkgs/development/compilers/boo/default.nix
@@ -1,6 +1,5 @@
-{ stdenv, fetchFromGitHub, pkgconfig, dbus, mono, makeWrapper, nant
-, shared-mime-info, gtksourceview, gtk2
-, targetVersion ? "4.5" }:
+{ stdenv, fetchFromGitHub, pkgconfig, mono, makeWrapper, nant
+, shared-mime-info, gtksourceview, gtk2 }:
 
 let
   release = "alpha";
diff --git a/pkgs/development/compilers/chicken/eggDerivation.nix b/pkgs/development/compilers/chicken/eggDerivation.nix
index bcb7a763fb6..2a14a997e57 100644
--- a/pkgs/development/compilers/chicken/eggDerivation.nix
+++ b/pkgs/development/compilers/chicken/eggDerivation.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchegg, chicken, makeWrapper }:
+{ stdenv, chicken, makeWrapper }:
 { name, src
 , buildInputs ? []
 , chickenInstallFlags ? []
diff --git a/pkgs/development/compilers/clasp/default.nix b/pkgs/development/compilers/clasp/default.nix
index 6bfb71a9627..6ff2028e3c1 100644
--- a/pkgs/development/compilers/clasp/default.nix
+++ b/pkgs/development/compilers/clasp/default.nix
@@ -1,7 +1,7 @@
 {stdenv, fetchFromGitHub
   , llvmPackages
   , cmake, boehmgc, gmp, zlib, ncurses, boost
-  , waf, python, git, sbcl
+  , python, git, sbcl
 }:
 stdenv.mkDerivation rec {
   name = "${pname}-${version}";
diff --git a/pkgs/development/compilers/cudatoolkit/default.nix b/pkgs/development/compilers/cudatoolkit/default.nix
index b7c310cf01d..e44c21abe94 100644
--- a/pkgs/development/compilers/cudatoolkit/default.nix
+++ b/pkgs/development/compilers/cudatoolkit/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, makeWrapper, fetchurl, requireFile, patchelf, perl, ncurses, expat, python27, zlib
+{ lib, stdenv, makeWrapper, fetchurl, requireFile, perl, ncurses, expat, python27, zlib
 , gcc48, gcc49, gcc5, gcc6
 , xorg, gtk2, glib, fontconfig, freetype, unixODBC, alsaLib, glibc
 }:
diff --git a/pkgs/development/compilers/dotnet/sdk/default.nix b/pkgs/development/compilers/dotnet/sdk/default.nix
index e7cb7495c90..f16be1b2822 100644
--- a/pkgs/development/compilers/dotnet/sdk/default.nix
+++ b/pkgs/development/compilers/dotnet/sdk/default.nix
@@ -6,7 +6,6 @@
 , libuuid
 , zlib
 , curl
-, patchelf
 }:
 
 let
diff --git a/pkgs/development/compilers/elm/default.nix b/pkgs/development/compilers/elm/default.nix
index 8ed34cf9d1e..6a8d5f11b75 100644
--- a/pkgs/development/compilers/elm/default.nix
+++ b/pkgs/development/compilers/elm/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, buildEnv, haskell, nodejs, fetchurl, fetchpatch, makeWrapper }:
+{ lib, stdenv, buildEnv, haskell, nodejs, fetchurl, makeWrapper }:
 
 # To update:
 # 1) Update versions in ./update-elm.rb and run it.
diff --git a/pkgs/development/compilers/emscripten/default.nix b/pkgs/development/compilers/emscripten/default.nix
index 8e268aa7eb7..e03039cb5e1 100644
--- a/pkgs/development/compilers/emscripten/default.nix
+++ b/pkgs/development/compilers/emscripten/default.nix
@@ -1,5 +1,5 @@
-{ emscriptenVersion, stdenv, fetchFromGitHub, emscriptenfastcomp, python, nodejs, closurecompiler, pkgs
-, jre, binaryen, enableWasm ? true ,  python2Packages, cmake
+{ emscriptenVersion, stdenv, fetchFromGitHub, emscriptenfastcomp, python, nodejs, closurecompiler
+, jre, binaryen, enableWasm ? true ,  cmake
 }:
 
 let
diff --git a/pkgs/development/compilers/emscripten/fastcomp/emscripten-fastcomp.nix b/pkgs/development/compilers/emscripten/fastcomp/emscripten-fastcomp.nix
index 5317cf25d41..06acebd2ba4 100644
--- a/pkgs/development/compilers/emscripten/fastcomp/emscripten-fastcomp.nix
+++ b/pkgs/development/compilers/emscripten/fastcomp/emscripten-fastcomp.nix
@@ -1,4 +1,4 @@
-{ emscriptenVersion, stdenv, llvm, fetchFromGitHub, cmake, python, gtest, ... }:
+{ emscriptenVersion, stdenv, fetchFromGitHub, cmake, python, gtest, ... }:
 
 let
   rev = emscriptenVersion;
diff --git a/pkgs/development/compilers/factor-lang/default.nix b/pkgs/development/compilers/factor-lang/default.nix
index ce198786600..4dab2e06f48 100644
--- a/pkgs/development/compilers/factor-lang/default.nix
+++ b/pkgs/development/compilers/factor-lang/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchFromGitHub, glib, glibc, git,
+{ stdenv, fetchurl, fetchFromGitHub, glib, git,
   rlwrap, curl, pkgconfig, perl, makeWrapper, tzdata, ncurses,
   libX11, pango, cairo, gtk2, gdk_pixbuf, gtkglext,
   libGLU, libXmu, libXt, libICE, libSM }:
diff --git a/pkgs/development/compilers/gambit/build.nix b/pkgs/development/compilers/gambit/build.nix
index 202e5525422..72530f99cdb 100644
--- a/pkgs/development/compilers/gambit/build.nix
+++ b/pkgs/development/compilers/gambit/build.nix
@@ -1,4 +1,4 @@
-{ stdenv, git, openssl, autoconf, pkgs, makeStaticLibraries, version, git-version, SRC }:
+{ stdenv, git, openssl, autoconf, pkgs, makeStaticLibraries, version, SRC }:
 
 stdenv.mkDerivation rec {
   name    = "gambit-${version}";
diff --git a/pkgs/development/compilers/gambit/default.nix b/pkgs/development/compilers/gambit/default.nix
index 93f1d9184b4..77e8fb51602 100644
--- a/pkgs/development/compilers/gambit/default.nix
+++ b/pkgs/development/compilers/gambit/default.nix
@@ -2,7 +2,6 @@
 
 callPackage ./build.nix {
   version = "4.8.9";
-  git-version = "4.8.9";
 
   SRC = fetchurl {
     url = "http://www.iro.umontreal.ca/~gambit/download/gambit/v4.8/source/gambit-v4_8_9-devel.tgz";
diff --git a/pkgs/development/compilers/gambit/unstable.nix b/pkgs/development/compilers/gambit/unstable.nix
index 545bece12c4..169ddb5a6a3 100644
--- a/pkgs/development/compilers/gambit/unstable.nix
+++ b/pkgs/development/compilers/gambit/unstable.nix
@@ -2,7 +2,6 @@
 
 callPackage ./build.nix {
   version = "unstable-2018-05-30";
-  git-version = "4.8.9-54-gffe8841b";
   SRC = fetchgit {
     url = "https://github.com/feeley/gambit.git";
     rev = "ffe8841b56330eb86fd794b16dc7f83914ecc7c5";
diff --git a/pkgs/development/compilers/gcc/4.8/default.nix b/pkgs/development/compilers/gcc/4.8/default.nix
index 15071fd2ba5..943391611de 100644
--- a/pkgs/development/compilers/gcc/4.8/default.nix
+++ b/pkgs/development/compilers/gcc/4.8/default.nix
@@ -28,7 +28,6 @@
 , # Strip kills static libs of other archs (hence no cross)
   stripped ? hostPlatform == buildPlatform && targetPlatform == hostPlatform
 , gnused ? null
-, darwin ? null
 , buildPlatform, hostPlatform, targetPlatform
 , buildPackages
 }:
diff --git a/pkgs/development/compilers/gcc/4.9/default.nix b/pkgs/development/compilers/gcc/4.9/default.nix
index 006cbdf40dc..bf3b192e1bb 100644
--- a/pkgs/development/compilers/gcc/4.9/default.nix
+++ b/pkgs/development/compilers/gcc/4.9/default.nix
@@ -28,7 +28,6 @@
 , # Strip kills static libs of other archs (hence no cross)
   stripped ? hostPlatform == buildPlatform && targetPlatform == hostPlatform
 , gnused ? null
-, darwin ? null
 , buildPlatform, hostPlatform, targetPlatform
 , buildPackages
 }:
diff --git a/pkgs/development/compilers/gcc/5/default.nix b/pkgs/development/compilers/gcc/5/default.nix
index f360ed135d7..0564329967e 100644
--- a/pkgs/development/compilers/gcc/5/default.nix
+++ b/pkgs/development/compilers/gcc/5/default.nix
@@ -29,7 +29,6 @@
   stripped ? hostPlatform == buildPlatform && targetPlatform == hostPlatform
 , gnused ? null
 , cloog # unused; just for compat with gcc4, as we override the parameter on some places
-, darwin ? null
 , buildPlatform, hostPlatform, targetPlatform
 , buildPackages
 }:
diff --git a/pkgs/development/compilers/gcc/6/default.nix b/pkgs/development/compilers/gcc/6/default.nix
index 02a00350162..50d55aef234 100644
--- a/pkgs/development/compilers/gcc/6/default.nix
+++ b/pkgs/development/compilers/gcc/6/default.nix
@@ -29,7 +29,6 @@
   stripped ? hostPlatform == buildPlatform && targetPlatform == hostPlatform
 , gnused ? null
 , cloog # unused; just for compat with gcc4, as we override the parameter on some places
-, darwin ? null
 , buildPlatform, hostPlatform, targetPlatform
 , buildPackages
 }:
diff --git a/pkgs/development/compilers/gcc/7/default.nix b/pkgs/development/compilers/gcc/7/default.nix
index 84323cca823..0c51868aef8 100644
--- a/pkgs/development/compilers/gcc/7/default.nix
+++ b/pkgs/development/compilers/gcc/7/default.nix
@@ -22,7 +22,6 @@
   stripped ? hostPlatform == buildPlatform && targetPlatform == hostPlatform
 , gnused ? null
 , cloog # unused; just for compat with gcc4, as we override the parameter on some places
-, darwin ? null
 , buildPlatform, hostPlatform, targetPlatform
 , buildPackages
 }:
diff --git a/pkgs/development/compilers/gcc/8/default.nix b/pkgs/development/compilers/gcc/8/default.nix
index 85c03bc440f..38d8bcd83cf 100644
--- a/pkgs/development/compilers/gcc/8/default.nix
+++ b/pkgs/development/compilers/gcc/8/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, targetPackages, fetchurl, fetchpatch, noSysDirs
+{ stdenv, targetPackages, fetchurl, noSysDirs
 , langC ? true, langCC ? true, langFortran ? false
 , langObjC ? targetPlatform.isDarwin
 , langObjCpp ? targetPlatform.isDarwin
@@ -22,7 +22,6 @@
   stripped ? hostPlatform == buildPlatform && targetPlatform == hostPlatform
 , gnused ? null
 , cloog # unused; just for compat with gcc4, as we override the parameter on some places
-, darwin ? null
 , buildPlatform, hostPlatform, targetPlatform
 , buildPackages
 }:
diff --git a/pkgs/development/compilers/gcc/snapshot/default.nix b/pkgs/development/compilers/gcc/snapshot/default.nix
index b00f180bbc7..124fdbcdf9d 100644
--- a/pkgs/development/compilers/gcc/snapshot/default.nix
+++ b/pkgs/development/compilers/gcc/snapshot/default.nix
@@ -22,7 +22,6 @@
   stripped ? hostPlatform == buildPlatform && targetPlatform == hostPlatform
 , gnused ? null
 , cloog # unused; just for compat with gcc4, as we override the parameter on some places
-, darwin ? null
 , flex ? null
 , buildPlatform, hostPlatform, targetPlatform
 , buildPackages
diff --git a/pkgs/development/compilers/gcl/2.6.13-pre.nix b/pkgs/development/compilers/gcl/2.6.13-pre.nix
index 2a80eccfb40..71a6eaa8db8 100644
--- a/pkgs/development/compilers/gcl/2.6.13-pre.nix
+++ b/pkgs/development/compilers/gcl/2.6.13-pre.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, mpfr, m4, binutils, fetchcvs, emacs, zlib, which
+{ stdenv, fetchgit, mpfr, m4, binutils, emacs, zlib, which
 , texinfo, libX11, xproto, inputproto, libXi, gmp, readline, strace
 , libXext, xextproto, libXt, libXaw, libXmu } :
 
diff --git a/pkgs/development/compilers/gcl/default.nix b/pkgs/development/compilers/gcl/default.nix
index 0e4d5bed051..f503427b326 100644
--- a/pkgs/development/compilers/gcl/default.nix
+++ b/pkgs/development/compilers/gcl/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, mpfr, m4, binutils, fetchcvs, emacs, zlib, which
+{ stdenv, fetchurl, mpfr, m4, binutils, emacs, zlib, which
 , texinfo, libX11, xproto, inputproto, libXi, gmp
 , libXext, xextproto, libXt, libXaw, libXmu } :
 
diff --git a/pkgs/development/compilers/gerbil/build.nix b/pkgs/development/compilers/gerbil/build.nix
index 5609de15d4c..0ce9fbb00e2 100644
--- a/pkgs/development/compilers/gerbil/build.nix
+++ b/pkgs/development/compilers/gerbil/build.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, makeStaticLibraries,
+{ stdenv, makeStaticLibraries,
   coreutils, rsync, bash,
   openssl, zlib, sqlite, libxml2, libyaml, mysql, lmdb, leveldb, postgresql,
   version, git-version, GAMBIT, SRC }:
diff --git a/pkgs/development/compilers/ghc/7.10.3.nix b/pkgs/development/compilers/ghc/7.10.3.nix
index 2a906d918aa..0cf3a4cb12b 100644
--- a/pkgs/development/compilers/ghc/7.10.3.nix
+++ b/pkgs/development/compilers/ghc/7.10.3.nix
@@ -3,10 +3,10 @@
 
 # build-tools
 , bootPkgs, hscolour
-, coreutils, fetchurl, fetchpatch, perl
+, coreutils, fetchurl, perl
 , docbook_xsl, docbook_xml_dtd_45, docbook_xml_dtd_42, libxml2, libxslt
 
-, libffi, libiconv ? null, ncurses
+, libiconv ? null, ncurses
 
 , useLLVM ? !targetPlatform.isx86
 , # LLVM is conceptually a run-time-only depedendency, but for
diff --git a/pkgs/development/compilers/ghc/8.0.2.nix b/pkgs/development/compilers/ghc/8.0.2.nix
index 8062e93df54..7671fcdb025 100644
--- a/pkgs/development/compilers/ghc/8.0.2.nix
+++ b/pkgs/development/compilers/ghc/8.0.2.nix
@@ -5,7 +5,7 @@
 , bootPkgs, hscolour
 , coreutils, fetchpatch, fetchurl, perl, sphinx
 
-, libffi, libiconv ? null, ncurses
+, libiconv ? null, ncurses
 
 , useLLVM ? !targetPlatform.isx86
 , # LLVM is conceptually a run-time-only depedendency, but for
diff --git a/pkgs/development/compilers/ghc/8.2.2.nix b/pkgs/development/compilers/ghc/8.2.2.nix
index d740a7ee673..c24cdeb43bf 100644
--- a/pkgs/development/compilers/ghc/8.2.2.nix
+++ b/pkgs/development/compilers/ghc/8.2.2.nix
@@ -6,7 +6,7 @@
 , autoconf, autoreconfHook, automake, coreutils, fetchurl, fetchpatch, perl, python3, sphinx
 , runCommand
 
-, libffi, libiconv ? null, ncurses
+, libiconv ? null, ncurses
 
 , useLLVM ? !targetPlatform.isx86 || (targetPlatform.isMusl && hostPlatform != targetPlatform)
 , # LLVM is conceptually a run-time-only depedendency, but for
diff --git a/pkgs/development/compilers/ghc/8.4.3.nix b/pkgs/development/compilers/ghc/8.4.3.nix
index 182afa6b349..c93fb1fd9b2 100644
--- a/pkgs/development/compilers/ghc/8.4.3.nix
+++ b/pkgs/development/compilers/ghc/8.4.3.nix
@@ -5,7 +5,7 @@
 , bootPkgs, alex, happy, hscolour
 , autoconf, automake, coreutils, fetchurl, fetchpatch, perl, python3, m4
 
-, libffi, libiconv ? null, ncurses
+, libiconv ? null, ncurses
 
 , useLLVM ? !targetPlatform.isx86 || (targetPlatform.isMusl && hostPlatform != targetPlatform)
 , # LLVM is conceptually a run-time-only depedendency, but for
diff --git a/pkgs/development/compilers/ghc/8.6.1.nix b/pkgs/development/compilers/ghc/8.6.1.nix
index 522ad32e69f..ae22e1f1e40 100644
--- a/pkgs/development/compilers/ghc/8.6.1.nix
+++ b/pkgs/development/compilers/ghc/8.6.1.nix
@@ -3,9 +3,9 @@
 
 # build-tools
 , bootPkgs, alex, happy, hscolour
-, autoconf, automake, coreutils, fetchurl, fetchpatch, perl, python3, m4
+, autoconf, automake, coreutils, fetchurl, perl, python3, m4
 
-, libffi, libiconv ? null, ncurses
+, libiconv ? null, ncurses
 
 , useLLVM ? !targetPlatform.isx86 || (targetPlatform.isMusl && hostPlatform != targetPlatform)
 , # LLVM is conceptually a run-time-only depedendency, but for
diff --git a/pkgs/development/compilers/ghc/head.nix b/pkgs/development/compilers/ghc/head.nix
index 4c1e5d986dc..2824ce669ee 100644
--- a/pkgs/development/compilers/ghc/head.nix
+++ b/pkgs/development/compilers/ghc/head.nix
@@ -5,7 +5,7 @@
 , bootPkgs, alex, happy, hscolour
 , autoconf, automake, coreutils, fetchgit, perl, python3, m4
 
-, libffi, libiconv ? null, ncurses
+, libiconv ? null, ncurses
 
 , useLLVM ? !targetPlatform.isx86 || (targetPlatform.isMusl && hostPlatform != targetPlatform)
 , # LLVM is conceptually a run-time-only depedendency, but for
diff --git a/pkgs/development/compilers/ghcjs-ng/configured-ghcjs-src.nix b/pkgs/development/compilers/ghcjs-ng/configured-ghcjs-src.nix
index 57d9fccd266..df1394e4a24 100644
--- a/pkgs/development/compilers/ghcjs-ng/configured-ghcjs-src.nix
+++ b/pkgs/development/compilers/ghcjs-ng/configured-ghcjs-src.nix
@@ -4,7 +4,6 @@
 , python3
 , gcc
 , cabal-install
-, gmp
 , runCommand
 , lib
 , stdenv
diff --git a/pkgs/development/compilers/ghcjs/base.nix b/pkgs/development/compilers/ghcjs/base.nix
index f09a577110b..46e9d8d72be 100644
--- a/pkgs/development/compilers/ghcjs/base.nix
+++ b/pkgs/development/compilers/ghcjs/base.nix
@@ -3,7 +3,6 @@
 , broken ? false
 , test-framework
 , test-framework-hunit
-, test-framework-quickcheck2
 , data-default
 , ghc-paths
 , haskell-src-exts
@@ -20,10 +19,8 @@
 , transformers-compat
 , haddock-api
 , regex-posix
-, callPackage
 
 , bootPkgs, gmp
-, jailbreak-cabal
 
 , runCommand
 , nodejs, stdenv, filepath, HTTP, HUnit, mtl, network, QuickCheck, random, stm
@@ -32,11 +29,11 @@
 , lens
 , parallel, safe, shelly, split, stringsearch, syb
 , tar, terminfo
-, vector, yaml, fetchgit, fetchFromGitHub, Cabal
+, vector, yaml, fetchgit, fetchFromGitHub
 , alex, happy, git, gnumake, autoconf, patch
 , automake, libtool
 , cryptohash
-, haddock, hspec, xhtml, primitive, cacert, pkgs
+, haddock, hspec, xhtml, pkgs
 , coreutils
 , libiconv
 
diff --git a/pkgs/development/compilers/go/1.10.nix b/pkgs/development/compilers/go/1.10.nix
index 0958bdeb0c1..513d0307f6b 100644
--- a/pkgs/development/compilers/go/1.10.nix
+++ b/pkgs/development/compilers/go/1.10.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchFromGitHub, tzdata, iana-etc, go_bootstrap, runCommand, writeScriptBin
 , perl, which, pkgconfig, patch, procps
 , pcre, cacert, llvm
-, Security, Foundation, bash
+, Security, Foundation
 , makeWrapper, git, subversion, mercurial, bazaar }:
 
 let
diff --git a/pkgs/development/compilers/go/1.9.nix b/pkgs/development/compilers/go/1.9.nix
index 6acedecb211..d46e40f460b 100644
--- a/pkgs/development/compilers/go/1.9.nix
+++ b/pkgs/development/compilers/go/1.9.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchFromGitHub, tzdata, iana-etc, go_bootstrap, runCommand, writeScriptBin
 , perl, which, pkgconfig, patch, procps
 , pcre, cacert, llvm
-, Security, Foundation, bash
+, Security, Foundation
 , makeWrapper, git, subversion, mercurial, bazaar }:
 
 let
diff --git a/pkgs/development/compilers/graalvm/default.nix b/pkgs/development/compilers/graalvm/default.nix
index 79446744371..52a49c519b3 100644
--- a/pkgs/development/compilers/graalvm/default.nix
+++ b/pkgs/development/compilers/graalvm/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchFromGitHub, fetchhg, fetchurl, fetchzip, mercurial, python27, zlib, makeWrapper, oraclejdk8 }:
+{ stdenv, lib, fetchFromGitHub, fetchurl, fetchzip, mercurial, python27, zlib, makeWrapper, oraclejdk8 }:
 
 let
   # pre-download some cache entries ('mx' will not be able to download under nixbld1)
diff --git a/pkgs/development/compilers/haxe/default.nix b/pkgs/development/compilers/haxe/default.nix
index afeef2b3637..0a974fccc88 100644
--- a/pkgs/development/compilers/haxe/default.nix
+++ b/pkgs/development/compilers/haxe/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, bash, coreutils, ocaml, zlib, pcre, neko, camlp4 }:
+{ stdenv, fetchgit, coreutils, ocaml, zlib, pcre, neko, camlp4 }:
 
 let
   generic = { version, sha256, prePatch }:
diff --git a/pkgs/development/compilers/inform7/default.nix b/pkgs/development/compilers/inform7/default.nix
index 7f1830430c4..a6955c03051 100644
--- a/pkgs/development/compilers/inform7/default.nix
+++ b/pkgs/development/compilers/inform7/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, writeText, fetchzip, coreutils, perl, gnutar, gzip }:
+{ stdenv, fetchzip, coreutils, perl, gnutar, gzip }:
 let
   version = "6M62";
 in stdenv.mkDerivation {
diff --git a/pkgs/development/compilers/ios-cross-compile/9.2.nix b/pkgs/development/compilers/ios-cross-compile/9.2.nix
index 9c4b38f87de..e64c0c912d9 100644
--- a/pkgs/development/compilers/ios-cross-compile/9.2.nix
+++ b/pkgs/development/compilers/ios-cross-compile/9.2.nix
@@ -1,6 +1,6 @@
 { stdenv, git, clang,
   fetchFromGitHub, requireFile,
-  openssl, xz, gnutar, gcc,
+  openssl, xz, gnutar,
   automake, autoconf, libtool, clangStdenv } :
 
 clangStdenv.mkDerivation rec {
diff --git a/pkgs/development/compilers/ispc/default.nix b/pkgs/development/compilers/ispc/default.nix
index 7aedf191abe..a5d6247ffdc 100644
--- a/pkgs/development/compilers/ispc/default.nix
+++ b/pkgs/development/compilers/ispc/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchFromGitHub, fetchpatch, bash, which, m4, python, bison, flex, llvmPackages,
+{stdenv, fetchFromGitHub, fetchpatch, which, m4, python, bison, flex, llvmPackages,
 testedTargets ? ["sse2" "host"] # the default test target is sse4, but that is not supported by all Hydra agents
 }:
 
diff --git a/pkgs/development/compilers/julia/0.5.nix b/pkgs/development/compilers/julia/0.5.nix
index cff6c1c446f..e503b7a92ce 100644
--- a/pkgs/development/compilers/julia/0.5.nix
+++ b/pkgs/development/compilers/julia/0.5.nix
@@ -1,11 +1,10 @@
-{ stdenv, fetchgit, fetchurl, fetchzip
+{ stdenv, fetchurl, fetchzip
 # build tools
 , gfortran, m4, makeWrapper, patchelf, perl, which, python2
-, runCommand
 , paxctl
 # libjulia dependencies
 , libunwind, readline, utf8proc, zlib
-, llvm, libffi, ncurses
+, llvm
 # standard library dependencies
 , curl, fftwSinglePrec, fftw, gmp, libgit2, mpfr, openlibm, openspecfun, pcre2
 # linear algebra
diff --git a/pkgs/development/compilers/julia/0.6.nix b/pkgs/development/compilers/julia/0.6.nix
index 49bbaf0e8df..fcf486b3b41 100644
--- a/pkgs/development/compilers/julia/0.6.nix
+++ b/pkgs/development/compilers/julia/0.6.nix
@@ -1,11 +1,10 @@
-{ stdenv, fetchgit, fetchurl, fetchzip
+{ stdenv, fetchurl, fetchzip
 # build tools
 , gfortran, m4, makeWrapper, patchelf, perl, which, python2
-, runCommand
 , paxctl
 # libjulia dependencies
 , libunwind, readline, utf8proc, zlib
-, llvm, libffi, ncurses
+, llvm
 # standard library dependencies
 , curl, fftwSinglePrec, fftw, gmp, libgit2, mpfr, openlibm, openspecfun, pcre2
 # linear algebra
diff --git a/pkgs/development/compilers/julia/default.nix b/pkgs/development/compilers/julia/default.nix
index b5a3a8c6be2..a504dc2ea46 100644
--- a/pkgs/development/compilers/julia/default.nix
+++ b/pkgs/development/compilers/julia/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, fetchurl
+{ stdenv, fetchurl
 # build tools
 , gfortran, m4, makeWrapper, patchelf, perl, which, python2, paxctl
 # libjulia dependencies
diff --git a/pkgs/development/compilers/ldc/default.nix b/pkgs/development/compilers/ldc/default.nix
index 48301a8f287..dc6a933a934 100644
--- a/pkgs/development/compilers/ldc/default.nix
+++ b/pkgs/development/compilers/ldc/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, fetchurl, cmake, llvm, curl, tzdata
+{ stdenv, fetchurl, cmake, llvm, curl, tzdata
 , python, libconfig, lit, gdb, unzip, darwin, bash
 , callPackage, makeWrapper, targetPackages
 , bootstrapVersion ? false
diff --git a/pkgs/development/compilers/llvm/3.4/llvm.nix b/pkgs/development/compilers/llvm/3.4/llvm.nix
index 0b29b04825a..25bb0828414 100644
--- a/pkgs/development/compilers/llvm/3.4/llvm.nix
+++ b/pkgs/development/compilers/llvm/3.4/llvm.nix
@@ -8,7 +8,6 @@
 , libffi
 , libbfd
 , libxml2
-, valgrind
 , ncurses
 , version
 , zlib
diff --git a/pkgs/development/compilers/llvm/3.5/dragonegg.nix b/pkgs/development/compilers/llvm/3.5/dragonegg.nix
index 96d4f9f558c..d54ffd96382 100644
--- a/pkgs/development/compilers/llvm/3.5/dragonegg.nix
+++ b/pkgs/development/compilers/llvm/3.5/dragonegg.nix
@@ -1,4 +1,4 @@
-{stdenv, fetch, fetchpatch, llvm, gmp, mpfr, libmpc, ncurses, zlib, version}:
+{stdenv, fetch, llvm, gmp, mpfr, libmpc, ncurses, zlib, version}:
 
 stdenv.mkDerivation rec {
   name = "dragonegg-${version}";
diff --git a/pkgs/development/compilers/llvm/3.7/default.nix b/pkgs/development/compilers/llvm/3.7/default.nix
index 1bd4b88c72d..f176894dedb 100644
--- a/pkgs/development/compilers/llvm/3.7/default.nix
+++ b/pkgs/development/compilers/llvm/3.7/default.nix
@@ -1,5 +1,5 @@
-{ newScope, stdenv, libstdcxxHook, cmake, libxml2, python2, isl, fetchurl
-, overrideCC, wrapCCWith, darwin
+{ newScope, stdenv, libstdcxxHook, isl, fetchurl
+, overrideCC, wrapCCWith
 , buildLlvmTools # tools, but from the previous stage, for cross
 , targetLlvmLibraries # libraries, but from the next stage, for cross
 }:
diff --git a/pkgs/development/compilers/llvm/3.7/llvm.nix b/pkgs/development/compilers/llvm/3.7/llvm.nix
index 1654914ff8c..98b6f4adbbf 100644
--- a/pkgs/development/compilers/llvm/3.7/llvm.nix
+++ b/pkgs/development/compilers/llvm/3.7/llvm.nix
@@ -8,7 +8,6 @@
 , libffi
 , libbfd
 , libxml2
-, valgrind
 , ncurses
 , version
 , zlib
diff --git a/pkgs/development/compilers/llvm/3.8/default.nix b/pkgs/development/compilers/llvm/3.8/default.nix
index 28f908ee829..99869e6e80a 100644
--- a/pkgs/development/compilers/llvm/3.8/default.nix
+++ b/pkgs/development/compilers/llvm/3.8/default.nix
@@ -1,4 +1,4 @@
-{ newScope, stdenv, libstdcxxHook, isl, fetchurl, overrideCC, wrapCCWith, darwin
+{ newScope, stdenv, libstdcxxHook, isl, fetchurl, overrideCC, wrapCCWith
 , buildLlvmTools # tools, but from the previous stage, for cross
 , targetLlvmLibraries # libraries, but from the next stage, for cross
 }:
diff --git a/pkgs/development/compilers/llvm/3.8/llvm.nix b/pkgs/development/compilers/llvm/3.8/llvm.nix
index a6fb6119817..8cfcb1af43d 100644
--- a/pkgs/development/compilers/llvm/3.8/llvm.nix
+++ b/pkgs/development/compilers/llvm/3.8/llvm.nix
@@ -8,7 +8,6 @@
 , libffi
 , libbfd
 , libxml2
-, valgrind
 , ncurses
 , version
 , zlib
diff --git a/pkgs/development/compilers/llvm/3.9/default.nix b/pkgs/development/compilers/llvm/3.9/default.nix
index ea3ea36eb6d..01c08f4bd20 100644
--- a/pkgs/development/compilers/llvm/3.9/default.nix
+++ b/pkgs/development/compilers/llvm/3.9/default.nix
@@ -1,4 +1,4 @@
-{ newScope, stdenv, libstdcxxHook, isl, fetchurl, overrideCC, wrapCCWith, darwin
+{ newScope, stdenv, libstdcxxHook, isl, fetchurl, overrideCC, wrapCCWith
 , buildLlvmTools # tools, but from the previous stage, for cross
 , targetLlvmLibraries # libraries, but from the next stage, for cross
 }:
diff --git a/pkgs/development/compilers/llvm/3.9/llvm.nix b/pkgs/development/compilers/llvm/3.9/llvm.nix
index 458ad7db8ef..c974eb6f6d3 100644
--- a/pkgs/development/compilers/llvm/3.9/llvm.nix
+++ b/pkgs/development/compilers/llvm/3.9/llvm.nix
@@ -8,14 +8,12 @@
 , libffi
 , libbfd
 , libxml2
-, valgrind
 , ncurses
 , version
 , zlib
 , compiler-rt_src
 , debugVersion ? false
 , enableSharedLibraries ? (buildPlatform == hostPlatform)
-, darwin
 , buildPackages
 , buildPlatform
 , hostPlatform
diff --git a/pkgs/development/compilers/llvm/4/default.nix b/pkgs/development/compilers/llvm/4/default.nix
index ae674d1fa8e..75037f6a07d 100644
--- a/pkgs/development/compilers/llvm/4/default.nix
+++ b/pkgs/development/compilers/llvm/4/default.nix
@@ -1,6 +1,5 @@
-{ lowPrio, newScope, stdenv, targetPlatform, cmake, libstdcxxHook
+{ lowPrio, newScope, stdenv, cmake, libstdcxxHook
 , libxml2, python2, isl, fetchurl, overrideCC, wrapCCWith
-, darwin
 , buildLlvmTools # tools, but from the previous stage, for cross
 , targetLlvmLibraries # libraries, but from the next stage, for cross
 }:
diff --git a/pkgs/development/compilers/llvm/4/libc++/default.nix b/pkgs/development/compilers/llvm/4/libc++/default.nix
index 6ce9c0d4792..2b543b9d793 100644
--- a/pkgs/development/compilers/llvm/4/libc++/default.nix
+++ b/pkgs/development/compilers/llvm/4/libc++/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetch, cmake, python, llvm, libcxxabi, fixDarwinDylibNames, version }:
+{ lib, stdenv, fetch, cmake, python, libcxxabi, fixDarwinDylibNames, version }:
 
 stdenv.mkDerivation rec {
   name = "libc++-${version}";
diff --git a/pkgs/development/compilers/llvm/4/lld.nix b/pkgs/development/compilers/llvm/4/lld.nix
index 776109ee74d..21b0c1c3601 100644
--- a/pkgs/development/compilers/llvm/4/lld.nix
+++ b/pkgs/development/compilers/llvm/4/lld.nix
@@ -1,9 +1,7 @@
 { stdenv
 , fetch
 , cmake
-, zlib
 , llvm
-, python
 , version
 }:
 
diff --git a/pkgs/development/compilers/llvm/4/llvm.nix b/pkgs/development/compilers/llvm/4/llvm.nix
index e9140d3fcc6..514c3a006e3 100644
--- a/pkgs/development/compilers/llvm/4/llvm.nix
+++ b/pkgs/development/compilers/llvm/4/llvm.nix
@@ -6,7 +6,6 @@
 , libffi
 , libbfd
 , libxml2
-, valgrind
 , ncurses
 , version
 , release_version
@@ -15,7 +14,6 @@
 , debugVersion ? false
 , enableManpages ? false
 , enableSharedLibraries ? true
-, darwin
 }:
 
 let
diff --git a/pkgs/development/compilers/llvm/4/openmp.nix b/pkgs/development/compilers/llvm/4/openmp.nix
index 0bdf5c71e1f..a8a6b3dfea8 100644
--- a/pkgs/development/compilers/llvm/4/openmp.nix
+++ b/pkgs/development/compilers/llvm/4/openmp.nix
@@ -1,7 +1,6 @@
 { stdenv
 , fetch
 , cmake
-, zlib
 , llvm
 , perl
 , version
diff --git a/pkgs/development/compilers/llvm/5/clang/default.nix b/pkgs/development/compilers/llvm/5/clang/default.nix
index 07738048f8e..5fd0271f026 100644
--- a/pkgs/development/compilers/llvm/5/clang/default.nix
+++ b/pkgs/development/compilers/llvm/5/clang/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetch, cmake, libxml2, llvm, version, release_version, clang-tools-extra_src, python
+{ stdenv, fetch, cmake, libxml2, llvm, version, clang-tools-extra_src, python
 , fixDarwinDylibNames
 , enableManpages ? false
 }:
diff --git a/pkgs/development/compilers/llvm/5/default.nix b/pkgs/development/compilers/llvm/5/default.nix
index ef2e1c29088..00b0083108b 100644
--- a/pkgs/development/compilers/llvm/5/default.nix
+++ b/pkgs/development/compilers/llvm/5/default.nix
@@ -1,6 +1,5 @@
-{ lowPrio, newScope, stdenv, targetPlatform, cmake, libstdcxxHook
+{ lowPrio, newScope, stdenv, cmake, libstdcxxHook
 , libxml2, python2, isl, fetchurl, overrideCC, wrapCCWith
-, darwin
 , buildLlvmTools # tools, but from the previous stage, for cross
 , targetLlvmLibraries # libraries, but from the next stage, for cross
 }:
diff --git a/pkgs/development/compilers/llvm/5/libc++/default.nix b/pkgs/development/compilers/llvm/5/libc++/default.nix
index 5492e12da98..c7b4615e374 100644
--- a/pkgs/development/compilers/llvm/5/libc++/default.nix
+++ b/pkgs/development/compilers/llvm/5/libc++/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetch, cmake, python, llvm, libcxxabi, fixDarwinDylibNames, version }:
+{ lib, stdenv, fetch, cmake, python, libcxxabi, fixDarwinDylibNames, version }:
 
 stdenv.mkDerivation rec {
   name = "libc++-${version}";
diff --git a/pkgs/development/compilers/llvm/5/lld.nix b/pkgs/development/compilers/llvm/5/lld.nix
index 05801f2f08f..9a47435cf14 100644
--- a/pkgs/development/compilers/llvm/5/lld.nix
+++ b/pkgs/development/compilers/llvm/5/lld.nix
@@ -1,9 +1,7 @@
 { stdenv
 , fetch
 , cmake
-, zlib
 , llvm
-, python
 , version
 }:
 
diff --git a/pkgs/development/compilers/llvm/5/llvm.nix b/pkgs/development/compilers/llvm/5/llvm.nix
index 31750e2d0da..68eebc33c6b 100644
--- a/pkgs/development/compilers/llvm/5/llvm.nix
+++ b/pkgs/development/compilers/llvm/5/llvm.nix
@@ -1,12 +1,10 @@
 { stdenv
 , fetch
-, fetchpatch
 , cmake
 , python
 , libffi
 , libbfd
 , libxml2
-, valgrind
 , ncurses
 , version
 , release_version
@@ -15,7 +13,6 @@
 , debugVersion ? false
 , enableManpages ? false
 , enableSharedLibraries ? true
-, darwin
 }:
 
 let
diff --git a/pkgs/development/compilers/llvm/5/openmp.nix b/pkgs/development/compilers/llvm/5/openmp.nix
index 5c2b7501f97..901015bf2ff 100644
--- a/pkgs/development/compilers/llvm/5/openmp.nix
+++ b/pkgs/development/compilers/llvm/5/openmp.nix
@@ -1,7 +1,6 @@
 { stdenv
 , fetch
 , cmake
-, zlib
 , llvm
 , perl
 , version
diff --git a/pkgs/development/compilers/llvm/6/clang/default.nix b/pkgs/development/compilers/llvm/6/clang/default.nix
index 88214418406..84056749678 100644
--- a/pkgs/development/compilers/llvm/6/clang/default.nix
+++ b/pkgs/development/compilers/llvm/6/clang/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetch, cmake, libxml2, llvm, version, release_version, clang-tools-extra_src, python
+{ stdenv, fetch, cmake, libxml2, llvm, version, clang-tools-extra_src, python
 , fixDarwinDylibNames
 , enableManpages ? false
 }:
diff --git a/pkgs/development/compilers/llvm/6/default.nix b/pkgs/development/compilers/llvm/6/default.nix
index 66f0facc952..141daa88dcf 100644
--- a/pkgs/development/compilers/llvm/6/default.nix
+++ b/pkgs/development/compilers/llvm/6/default.nix
@@ -1,6 +1,5 @@
-{ lowPrio, newScope, stdenv, targetPlatform, cmake, libstdcxxHook
+{ lowPrio, newScope, stdenv, cmake, libstdcxxHook
 , libxml2, python2, isl, fetchurl, overrideCC, wrapCCWith
-, darwin
 , buildLlvmTools # tools, but from the previous stage, for cross
 , targetLlvmLibraries # libraries, but from the next stage, for cross
 }:
diff --git a/pkgs/development/compilers/llvm/6/libc++/default.nix b/pkgs/development/compilers/llvm/6/libc++/default.nix
index c1f0b9f6129..1f87cb83ab0 100644
--- a/pkgs/development/compilers/llvm/6/libc++/default.nix
+++ b/pkgs/development/compilers/llvm/6/libc++/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetch, cmake, python, llvm, libcxxabi, fixDarwinDylibNames, version }:
+{ lib, stdenv, fetch, cmake, python, libcxxabi, fixDarwinDylibNames, version }:
 
 stdenv.mkDerivation rec {
   name = "libc++-${version}";
diff --git a/pkgs/development/compilers/llvm/6/lld.nix b/pkgs/development/compilers/llvm/6/lld.nix
index 818ad47a335..1e68276945e 100644
--- a/pkgs/development/compilers/llvm/6/lld.nix
+++ b/pkgs/development/compilers/llvm/6/lld.nix
@@ -3,7 +3,6 @@
 , cmake
 , libxml2
 , llvm
-, python
 , version
 }:
 
diff --git a/pkgs/development/compilers/llvm/6/llvm.nix b/pkgs/development/compilers/llvm/6/llvm.nix
index 6fc448574f4..a86f5b5039e 100644
--- a/pkgs/development/compilers/llvm/6/llvm.nix
+++ b/pkgs/development/compilers/llvm/6/llvm.nix
@@ -1,12 +1,10 @@
 { stdenv
 , fetch
-, fetchpatch
 , cmake
 , python
 , libffi
 , libbfd
 , libxml2
-, valgrind
 , ncurses
 , version
 , release_version
@@ -15,7 +13,6 @@
 , enableManpages ? false
 , enableSharedLibraries ? true
 , enableWasm ? true
-, darwin
 }:
 
 let
diff --git a/pkgs/development/compilers/llvm/6/openmp.nix b/pkgs/development/compilers/llvm/6/openmp.nix
index 16093758e82..908a5f1218f 100644
--- a/pkgs/development/compilers/llvm/6/openmp.nix
+++ b/pkgs/development/compilers/llvm/6/openmp.nix
@@ -1,7 +1,6 @@
 { stdenv
 , fetch
 , cmake
-, zlib
 , llvm
 , perl
 , version
diff --git a/pkgs/development/compilers/matter-compiler/default.nix b/pkgs/development/compilers/matter-compiler/default.nix
index 58fb0ca22d7..63e5b50c3d4 100644
--- a/pkgs/development/compilers/matter-compiler/default.nix
+++ b/pkgs/development/compilers/matter-compiler/default.nix
@@ -1,5 +1,5 @@
 
-{ stdenv, lib, bundlerEnv, ruby }:
+{ lib, bundlerEnv, ruby }:
 
 bundlerEnv {
   name = "matter_compiler-0.5.1";
diff --git a/pkgs/development/compilers/mcpp/default.nix b/pkgs/development/compilers/mcpp/default.nix
index cdf201cec7a..9ce7c9166bc 100644
--- a/pkgs/development/compilers/mcpp/default.nix
+++ b/pkgs/development/compilers/mcpp/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, mcpp }:
+{ stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
   name = "mcpp-2.7.2";
diff --git a/pkgs/development/compilers/mono/4.0.nix b/pkgs/development/compilers/mono/4.0.nix
index f13883db74f..892ae99abaf 100644
--- a/pkgs/development/compilers/mono/4.0.nix
+++ b/pkgs/development/compilers/mono/4.0.nix
@@ -1,4 +1,4 @@
-{ stdenv, callPackage, Foundation, libobjc }:
+{ callPackage, Foundation, libobjc }:
 callPackage ./generic.nix (rec {
   inherit Foundation libobjc;
   version = "4.0.4.1";
diff --git a/pkgs/development/compilers/mono/4.4.nix b/pkgs/development/compilers/mono/4.4.nix
index f80cffe220e..9a3ccd1fd86 100644
--- a/pkgs/development/compilers/mono/4.4.nix
+++ b/pkgs/development/compilers/mono/4.4.nix
@@ -1,4 +1,4 @@
-{ stdenv, callPackage, Foundation, libobjc }:
+{ callPackage, Foundation, libobjc }:
 
 callPackage ./generic.nix (rec {
   inherit Foundation libobjc;
diff --git a/pkgs/development/compilers/mono/4.6.nix b/pkgs/development/compilers/mono/4.6.nix
index 7c9918cdd39..2bba660b69c 100644
--- a/pkgs/development/compilers/mono/4.6.nix
+++ b/pkgs/development/compilers/mono/4.6.nix
@@ -1,4 +1,4 @@
-{ stdenv, callPackage, Foundation, libobjc }:
+{ callPackage, Foundation, libobjc }:
 
 callPackage ./generic.nix (rec {
   inherit Foundation libobjc;
diff --git a/pkgs/development/compilers/mono/4.8.nix b/pkgs/development/compilers/mono/4.8.nix
index c3ba316cd13..f445127c0da 100644
--- a/pkgs/development/compilers/mono/4.8.nix
+++ b/pkgs/development/compilers/mono/4.8.nix
@@ -1,4 +1,4 @@
-{ stdenv, callPackage, Foundation, libobjc }:
+{ callPackage, Foundation, libobjc }:
 
 callPackage ./generic-cmake.nix (rec {
   inherit Foundation libobjc;
diff --git a/pkgs/development/compilers/mono/5.0.nix b/pkgs/development/compilers/mono/5.0.nix
index d10d6e3e605..53820c97b1b 100644
--- a/pkgs/development/compilers/mono/5.0.nix
+++ b/pkgs/development/compilers/mono/5.0.nix
@@ -1,4 +1,4 @@
-{ stdenv, callPackage, Foundation, libobjc }:
+{ callPackage, Foundation, libobjc }:
 
 callPackage ./generic-cmake.nix (rec {
   inherit Foundation libobjc;
diff --git a/pkgs/development/compilers/mono/5.4.nix b/pkgs/development/compilers/mono/5.4.nix
index 31e86f94c0a..acebb4beef6 100644
--- a/pkgs/development/compilers/mono/5.4.nix
+++ b/pkgs/development/compilers/mono/5.4.nix
@@ -1,4 +1,4 @@
-{ stdenv, callPackage, Foundation, libobjc }:
+{ callPackage, Foundation, libobjc }:
 
 callPackage ./generic-cmake.nix (rec {
   inherit Foundation libobjc;
diff --git a/pkgs/development/compilers/mono/5.8.nix b/pkgs/development/compilers/mono/5.8.nix
index 6db9e19807b..7b5008fd04c 100644
--- a/pkgs/development/compilers/mono/5.8.nix
+++ b/pkgs/development/compilers/mono/5.8.nix
@@ -1,4 +1,4 @@
-{ stdenv, callPackage, Foundation, libobjc }:
+{ callPackage, Foundation, libobjc }:
 
 callPackage ./generic-cmake.nix (rec {
   inherit Foundation libobjc;
diff --git a/pkgs/development/compilers/nvidia-cg-toolkit/default.nix b/pkgs/development/compilers/nvidia-cg-toolkit/default.nix
index 9eec23f1ba8..21ccf77e4a2 100644
--- a/pkgs/development/compilers/nvidia-cg-toolkit/default.nix
+++ b/pkgs/development/compilers/nvidia-cg-toolkit/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, patchelf }:
+{ lib, stdenv, fetchurl }:
 
 assert stdenv ? glibc;
 
diff --git a/pkgs/development/compilers/obliv-c/default.nix b/pkgs/development/compilers/obliv-c/default.nix
index 774cefb7940..f5bd3430ae7 100644
--- a/pkgs/development/compilers/obliv-c/default.nix
+++ b/pkgs/development/compilers/obliv-c/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, libgcrypt, fetchFromGitHub, ocamlPackages, perl }:
+{ stdenv, libgcrypt, fetchFromGitHub, ocamlPackages, perl }:
 stdenv.mkDerivation rec {
   name = "obliv-c-${version}";
   version = "0.0pre20170827";
diff --git a/pkgs/development/compilers/openjdk/10.nix b/pkgs/development/compilers/openjdk/10.nix
index 7ed493fe92e..6e8d9003bf4 100644
--- a/pkgs/development/compilers/openjdk/10.nix
+++ b/pkgs/development/compilers/openjdk/10.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, fetchurl, bash, cpio, pkgconfig, file, which, unzip, zip, cups, freetype
-, alsaLib, bootjdk, cacert, perl, liberation_ttf, fontconfig, zlib, lndir
+, alsaLib, bootjdk, perl, liberation_ttf, fontconfig, zlib, lndir
 , libX11, libICE, libXrender, libXext, libXt, libXtst, libXi, libXinerama, libXcursor, libXrandr
 , libjpeg, giflib
 , setJavaClassPath
diff --git a/pkgs/development/compilers/openjdk/bootstrap.nix b/pkgs/development/compilers/openjdk/bootstrap.nix
index 3c29df7ec78..612f0db0582 100644
--- a/pkgs/development/compilers/openjdk/bootstrap.nix
+++ b/pkgs/development/compilers/openjdk/bootstrap.nix
@@ -1,5 +1,5 @@
 { stdenv
-, runCommand, fetchurl, file, zlib
+, runCommand, fetchurl, zlib
 
 , version
 }:
diff --git a/pkgs/development/compilers/oraclejdk/jdk10-linux.nix b/pkgs/development/compilers/oraclejdk/jdk10-linux.nix
index e6e868fdf41..de063500b70 100644
--- a/pkgs/development/compilers/oraclejdk/jdk10-linux.nix
+++ b/pkgs/development/compilers/oraclejdk/jdk10-linux.nix
@@ -2,11 +2,9 @@
 , stdenv
 , requireFile
 , makeWrapper
-, unzip
 , file
 , xorg ? null
 , packageType ? "JDK" # JDK, JRE, or ServerJRE
-, pluginSupport ? true
 , glib
 , libxml2
 , ffmpeg_2
diff --git a/pkgs/development/compilers/pakcs/default.nix b/pkgs/development/compilers/pakcs/default.nix
index 94b89cf3a95..60388265348 100644
--- a/pkgs/development/compilers/pakcs/default.nix
+++ b/pkgs/development/compilers/pakcs/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   curryBase = haskellPackages.callPackage (
     { mkDerivation, base, Cabal, containers, directory, either
-    , filepath, mtl, pretty, stdenv, syb, time
+    , filepath, mtl, pretty, syb, time
     }:
     mkDerivation {
       pname = "curry-base";
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
 
   curryFront = haskellPackages.callPackage (
     { mkDerivation, base, Cabal, containers, directory
-    , filepath, mtl, network-uri, process, stdenv, syb, transformers
+    , filepath, mtl, network-uri, process, syb, transformers
     }:
     mkDerivation {
       pname = "curry-frontend";
diff --git a/pkgs/development/compilers/rust/binaryBuild.nix b/pkgs/development/compilers/rust/binaryBuild.nix
index dbfc14e30ef..488d43a6fea 100644
--- a/pkgs/development/compilers/rust/binaryBuild.nix
+++ b/pkgs/development/compilers/rust/binaryBuild.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, makeWrapper, bash, cacert, zlib, buildRustPackage, curl, darwin
+{ stdenv, makeWrapper, bash, buildRustPackage, curl, darwin
 , version
 , src
 , platform
diff --git a/pkgs/development/compilers/rust/cargo.nix b/pkgs/development/compilers/rust/cargo.nix
index 46caabf3391..2ff3257c7fb 100644
--- a/pkgs/development/compilers/rust/cargo.nix
+++ b/pkgs/development/compilers/rust/cargo.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, file, curl, pkgconfig, python, openssl, cmake, zlib
+{ stdenv, file, curl, pkgconfig, python, openssl, cmake, zlib
 , makeWrapper, libiconv, cacert, rustPlatform, rustc, libgit2, darwin
 , version
 , patches ? []
diff --git a/pkgs/development/compilers/souffle/default.nix b/pkgs/development/compilers/souffle/default.nix
index 099a591b407..0523e099e49 100644
--- a/pkgs/development/compilers/souffle/default.nix
+++ b/pkgs/development/compilers/souffle/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchFromGitHub
 , boost, bison, flex, openjdk, doxygen
-, perl, graphviz, libtool, ncurses, zlib, sqlite
+, perl, graphviz, ncurses, zlib, sqlite
 , autoreconfHook }:
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/development/compilers/swift/default.nix b/pkgs/development/compilers/swift/default.nix
index abbfdd2abb7..9c1a3658590 100644
--- a/pkgs/development/compilers/swift/default.nix
+++ b/pkgs/development/compilers/swift/default.nix
@@ -27,7 +27,6 @@
 , git
 , libgit2
 , fetchFromGitHub
-, fetchpatch
 , paxctl
 , findutils
 , makeWrapper
diff --git a/pkgs/development/compilers/urweb/default.nix b/pkgs/development/compilers/urweb/default.nix
index f2b6016ceb7..8426635ce96 100644
--- a/pkgs/development/compilers/urweb/default.nix
+++ b/pkgs/development/compilers/urweb/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchurl, file, openssl, mlton
+{ stdenv, fetchurl, file, openssl, mlton
 , mysql, postgresql, sqlite, gcc
 }: