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-rw-r--r--pkgs/applications/science/astronomy/celestia/default.nix3
-rw-r--r--pkgs/applications/science/astronomy/stellarium/default.nix2
-rw-r--r--pkgs/applications/science/biology/diamond/default.nix2
-rw-r--r--pkgs/applications/science/biology/freebayes/default.nix2
-rw-r--r--pkgs/applications/science/biology/mosdepth/default.nix2
-rw-r--r--pkgs/applications/science/biology/raxml/default.nix1
-rwxr-xr-xpkgs/applications/science/biology/vcftools/default.nix2
-rw-r--r--pkgs/applications/science/electronics/adms/default.nix2
-rw-r--r--pkgs/applications/science/electronics/bitscope/common.nix2
-rw-r--r--pkgs/applications/science/electronics/bitscope/packages.nix5
-rw-r--r--pkgs/applications/science/electronics/kicad/default.nix2
-rw-r--r--pkgs/applications/science/electronics/librepcb/default.nix2
-rw-r--r--pkgs/applications/science/logic/aspino/default.nix2
-rw-r--r--pkgs/applications/science/logic/coq2html/default.nix2
-rw-r--r--pkgs/applications/science/logic/elan/default.nix2
-rw-r--r--pkgs/applications/science/logic/hol_light/default.nix2
-rw-r--r--pkgs/applications/science/logic/lean2/default.nix2
-rw-r--r--pkgs/applications/science/logic/mcrl2/default.nix3
-rw-r--r--pkgs/applications/science/logic/saw-tools/default.nix2
-rw-r--r--pkgs/applications/science/logic/tamarin-prover/default.nix2
-rw-r--r--pkgs/applications/science/logic/tlaplus/tlaps.nix6
-rw-r--r--pkgs/applications/science/logic/workcraft/default.nix2
-rw-r--r--pkgs/applications/science/machine-learning/torch/torch-distro.nix6
-rw-r--r--pkgs/applications/science/math/R/default.nix2
-rw-r--r--pkgs/applications/science/math/cntk/default.nix2
-rw-r--r--pkgs/applications/science/math/colpack/default.nix2
-rw-r--r--pkgs/applications/science/math/mathematica/10.nix2
-rw-r--r--pkgs/applications/science/math/mathematica/9.nix2
-rw-r--r--pkgs/applications/science/math/mathematica/default.nix1
-rw-r--r--pkgs/applications/science/math/sage/env-locations.nix3
-rw-r--r--pkgs/applications/science/math/sage/openblas-pc.nix3
-rw-r--r--pkgs/applications/science/math/sage/sage-with-env.nix3
-rw-r--r--pkgs/applications/science/math/sage/sagedoc.nix4
-rw-r--r--pkgs/applications/science/math/sage/sagelib.nix3
-rw-r--r--pkgs/applications/science/math/scilab/default.nix2
-rw-r--r--pkgs/applications/science/math/singular/default.nix2
-rw-r--r--pkgs/applications/science/misc/gephi/default.nix2
-rw-r--r--pkgs/applications/science/misc/golly/beta.nix2
-rw-r--r--pkgs/applications/science/misc/openmvg/default.nix2
-rw-r--r--pkgs/applications/science/misc/openmvs/default.nix2
-rw-r--r--pkgs/applications/science/misc/root/default.nix2
-rw-r--r--pkgs/applications/science/robotics/gazebo/default.nix2
-rw-r--r--pkgs/applications/science/robotics/qgroundcontrol/default.nix6
-rw-r--r--pkgs/applications/science/robotics/yarp/default.nix2
-rw-r--r--pkgs/applications/science/spyder/default.nix4
45 files changed, 45 insertions, 68 deletions
diff --git a/pkgs/applications/science/astronomy/celestia/default.nix b/pkgs/applications/science/astronomy/celestia/default.nix
index 589625cc18f..e3ceffd34c1 100644
--- a/pkgs/applications/science/astronomy/celestia/default.nix
+++ b/pkgs/applications/science/astronomy/celestia/default.nix
@@ -1,6 +1,5 @@
 { stdenv, fetchurl, freeglut, gtk2, gtkglext, libjpeg_turbo, libtheora, libXmu
-, lua, libGLU_combined, pkgconfig, perl, autoreconfHook, glib, cairo
-, pango, gdk_pixbuf, atk
+, lua, libGLU_combined, pkgconfig, perl, autoreconfHook
 }:
 
 let
diff --git a/pkgs/applications/science/astronomy/stellarium/default.nix b/pkgs/applications/science/astronomy/stellarium/default.nix
index 11160812671..24d6246e90c 100644
--- a/pkgs/applications/science/astronomy/stellarium/default.nix
+++ b/pkgs/applications/science/astronomy/stellarium/default.nix
@@ -1,5 +1,5 @@
 { mkDerivation, lib, fetchFromGitHub
-, cmake, freetype, libpng, libGLU_combined, gettext, openssl, perl, libiconv
+, cmake, freetype, libpng, libGLU_combined, openssl, perl, libiconv
 , qtscript, qtserialport, qttools
 , qtmultimedia, qtlocation, makeWrapper, qtbase
 }:
diff --git a/pkgs/applications/science/biology/diamond/default.nix b/pkgs/applications/science/biology/diamond/default.nix
index a45e5df2f52..854e91b2fcb 100644
--- a/pkgs/applications/science/biology/diamond/default.nix
+++ b/pkgs/applications/science/biology/diamond/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, cmake, gcc, zlib }:
+{ stdenv, fetchurl, cmake, zlib }:
 
 stdenv.mkDerivation rec {
   name = "diamond-0.8.36";
diff --git a/pkgs/applications/science/biology/freebayes/default.nix b/pkgs/applications/science/biology/freebayes/default.nix
index 99d2dfa55dd..1a15dcf6197 100644
--- a/pkgs/applications/science/biology/freebayes/default.nix
+++ b/pkgs/applications/science/biology/freebayes/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, cmake, gcc, zlib, bzip2, lzma }:
+{ stdenv, fetchFromGitHub, zlib, bzip2, lzma }:
 
 stdenv.mkDerivation rec {
   name    = "freebayes-${version}";
diff --git a/pkgs/applications/science/biology/mosdepth/default.nix b/pkgs/applications/science/biology/mosdepth/default.nix
index 05cd7992aa9..4b4920a6ca3 100644
--- a/pkgs/applications/science/biology/mosdepth/default.nix
+++ b/pkgs/applications/science/biology/mosdepth/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchFromGitHub, nim, htslib, patchelf, pcre}:
+{stdenv, fetchFromGitHub, nim, htslib, pcre}:
 
 let
   hts-nim = fetchFromGitHub {
diff --git a/pkgs/applications/science/biology/raxml/default.nix b/pkgs/applications/science/biology/raxml/default.nix
index efe19a4e2b6..140f7032319 100644
--- a/pkgs/applications/science/biology/raxml/default.nix
+++ b/pkgs/applications/science/biology/raxml/default.nix
@@ -1,6 +1,5 @@
 { stdenv
 , fetchFromGitHub
-, zlib
 , pkgs
 , mpi ? false
 }:
diff --git a/pkgs/applications/science/biology/vcftools/default.nix b/pkgs/applications/science/biology/vcftools/default.nix
index ab3050955df..394973692dc 100755
--- a/pkgs/applications/science/biology/vcftools/default.nix
+++ b/pkgs/applications/science/biology/vcftools/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, htslib, zlib, autoreconfHook, pkgconfig, perl }:
+{ stdenv, fetchFromGitHub, zlib, autoreconfHook, pkgconfig, perl }:
 
 stdenv.mkDerivation rec {
   name = "${pname}-${version}";
diff --git a/pkgs/applications/science/electronics/adms/default.nix b/pkgs/applications/science/electronics/adms/default.nix
index 99b7ef79594..236225959f7 100644
--- a/pkgs/applications/science/electronics/adms/default.nix
+++ b/pkgs/applications/science/electronics/adms/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, libtool, autoreconfHook, flex, bison, gperf,
+{ stdenv, fetchFromGitHub, autoreconfHook, flex, bison, gperf,
   libxml2, perl, perlPackages, gd }:
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/applications/science/electronics/bitscope/common.nix b/pkgs/applications/science/electronics/bitscope/common.nix
index ba2d5221cc5..64777b5a0ac 100644
--- a/pkgs/applications/science/electronics/bitscope/common.nix
+++ b/pkgs/applications/science/electronics/bitscope/common.nix
@@ -2,14 +2,12 @@
 , buildFHSUserEnv
 , cairo
 , dpkg
-, fetchurl
 , gdk_pixbuf
 , glib
 , gtk2-x11
 , makeWrapper
 , pango
 , stdenv
-, writeTextFile
 , xorg
 }:
 
diff --git a/pkgs/applications/science/electronics/bitscope/packages.nix b/pkgs/applications/science/electronics/bitscope/packages.nix
index dc333f3d3b7..58e01f4f9f4 100644
--- a/pkgs/applications/science/electronics/bitscope/packages.nix
+++ b/pkgs/applications/science/electronics/bitscope/packages.nix
@@ -1,8 +1,5 @@
-{ buildFHSUserEnv
-, callPackage
+{ callPackage
 , fetchurl
-, makeWrapper
-, stdenv
 }:
 
 let
diff --git a/pkgs/applications/science/electronics/kicad/default.nix b/pkgs/applications/science/electronics/kicad/default.nix
index 8e98bad55c3..e3244ec339e 100644
--- a/pkgs/applications/science/electronics/kicad/default.nix
+++ b/pkgs/applications/science/electronics/kicad/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchbzr, cmake, libGLU_combined, wxGTK, zlib, libX11, gettext, glew, cairo, curl, openssl, boost, pkgconfig, doxygen }:
+{ stdenv, fetchurl, cmake, libGLU_combined, wxGTK, zlib, libX11, gettext, glew, cairo, curl, openssl, boost, pkgconfig, doxygen }:
 
 stdenv.mkDerivation rec {
   name = "kicad-${version}";
diff --git a/pkgs/applications/science/electronics/librepcb/default.nix b/pkgs/applications/science/electronics/librepcb/default.nix
index 48afb5bf9dc..33eb52c18ee 100644
--- a/pkgs/applications/science/electronics/librepcb/default.nix
+++ b/pkgs/applications/science/electronics/librepcb/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, qtbase, qttools, qmake, libGLU_combined, openssl, zlib }:
+{ stdenv, fetchFromGitHub, qtbase, qttools, qmake }:
 
 stdenv.mkDerivation rec {
   name = "librepcb-${version}";
diff --git a/pkgs/applications/science/logic/aspino/default.nix b/pkgs/applications/science/logic/aspino/default.nix
index 5e1a448a7cf..d7a5e7b4c83 100644
--- a/pkgs/applications/science/logic/aspino/default.nix
+++ b/pkgs/applications/science/logic/aspino/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchFromGitHub, zlib, boost, glucose }:
+{ stdenv, fetchurl, fetchFromGitHub, zlib, boost }:
 
 let
   glucose' = fetchurl {
diff --git a/pkgs/applications/science/logic/coq2html/default.nix b/pkgs/applications/science/logic/coq2html/default.nix
index 9687ac66ead..a987bf1ba57 100644
--- a/pkgs/applications/science/logic/coq2html/default.nix
+++ b/pkgs/applications/science/logic/coq2html/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, make, fetchgit, ocaml }:
+{ stdenv, make, fetchgit, ocaml }:
 
 let 
   version = "20170720";
diff --git a/pkgs/applications/science/logic/elan/default.nix b/pkgs/applications/science/logic/elan/default.nix
index ff737de0cc4..2b7cb9c30fa 100644
--- a/pkgs/applications/science/logic/elan/default.nix
+++ b/pkgs/applications/science/logic/elan/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, pkgconfig, curl, openssl, zlib, fetchFromGitHub, rustPlatform }:
+{ stdenv, pkgconfig, curl, openssl, zlib, fetchFromGitHub, rustPlatform }:
 
 rustPlatform.buildRustPackage rec {
   name = "elan-${version}";
diff --git a/pkgs/applications/science/logic/hol_light/default.nix b/pkgs/applications/science/logic/hol_light/default.nix
index 8d7c11ee91b..a1779baf5f8 100644
--- a/pkgs/applications/science/logic/hol_light/default.nix
+++ b/pkgs/applications/science/logic/hol_light/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, fetchpatch, writeScript, ocaml, camlp5 }:
+{ stdenv, fetchFromGitHub, fetchpatch, ocaml, camlp5 }:
 
 let
   start_script = ''
diff --git a/pkgs/applications/science/logic/lean2/default.nix b/pkgs/applications/science/logic/lean2/default.nix
index 2b861b6d06d..4e1415d3961 100644
--- a/pkgs/applications/science/logic/lean2/default.nix
+++ b/pkgs/applications/science/logic/lean2/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, cmake, gmp, mpfr, boost, python
+{ stdenv, fetchFromGitHub, cmake, gmp, mpfr, python
 , gperftools, ninja, makeWrapper }:
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/applications/science/logic/mcrl2/default.nix b/pkgs/applications/science/logic/mcrl2/default.nix
index 6d9549b526f..dc32e84279a 100644
--- a/pkgs/applications/science/logic/mcrl2/default.nix
+++ b/pkgs/applications/science/logic/mcrl2/default.nix
@@ -1,5 +1,4 @@
-{stdenv, fetchurl, cmake, subversion, libGLU_combined, qt5, boost,
- python27, python27Packages}:
+{stdenv, fetchurl, cmake, libGLU_combined, qt5, boost}:
 
 stdenv.mkDerivation rec {
   version = "201707";
diff --git a/pkgs/applications/science/logic/saw-tools/default.nix b/pkgs/applications/science/logic/saw-tools/default.nix
index 949b34420b7..65d2b4d91c3 100644
--- a/pkgs/applications/science/logic/saw-tools/default.nix
+++ b/pkgs/applications/science/logic/saw-tools/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, gmp4, ncurses, zlib, makeWrapper, clang_35 }:
+{ stdenv, fetchurl, gmp4, ncurses, zlib, clang_35 }:
 
 let
   libPath = stdenv.lib.makeLibraryPath
diff --git a/pkgs/applications/science/logic/tamarin-prover/default.nix b/pkgs/applications/science/logic/tamarin-prover/default.nix
index fb37554b65f..4efc384ed22 100644
--- a/pkgs/applications/science/logic/tamarin-prover/default.nix
+++ b/pkgs/applications/science/logic/tamarin-prover/default.nix
@@ -1,4 +1,4 @@
-{ haskell, haskellPackages, mkDerivation, fetchFromGitHub, lib
+{ haskellPackages, mkDerivation, fetchFromGitHub, lib
 # the following are non-haskell dependencies
 , makeWrapper, which, maude, graphviz, sapic
 }:
diff --git a/pkgs/applications/science/logic/tlaplus/tlaps.nix b/pkgs/applications/science/logic/tlaplus/tlaps.nix
index 9a78c1df8b1..7d35f5f91df 100644
--- a/pkgs/applications/science/logic/tlaplus/tlaps.nix
+++ b/pkgs/applications/science/logic/tlaplus/tlaps.nix
@@ -1,8 +1,6 @@
-{ lib
-, fetchurl
-, makeWrapper
+{ fetchurl
 , stdenv
-, ocaml, gawk, isabelle, cvc3, perl, wget, which
+, ocaml, isabelle, cvc3, perl, wget, which
 }:
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/applications/science/logic/workcraft/default.nix b/pkgs/applications/science/logic/workcraft/default.nix
index b677927a8ef..313fe5a9f1d 100644
--- a/pkgs/applications/science/logic/workcraft/default.nix
+++ b/pkgs/applications/science/logic/workcraft/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, pkgs, fetchurl, jre, makeWrapper }:
+{ stdenv, fetchurl, jre, makeWrapper }:
 
 stdenv.mkDerivation rec {
   name = "workcraft-${version}";
diff --git a/pkgs/applications/science/machine-learning/torch/torch-distro.nix b/pkgs/applications/science/machine-learning/torch/torch-distro.nix
index 85a4aa02e44..9c4f2402143 100644
--- a/pkgs/applications/science/machine-learning/torch/torch-distro.nix
+++ b/pkgs/applications/science/machine-learning/torch/torch-distro.nix
@@ -1,6 +1,6 @@
-{ luarocks, lib , stdenv,  writeText , readline,  makeWrapper,
-  less, ncurses, cmake, openblas, coreutils, fetchgit, libuuid, czmq, openssl,
-  gnuplot, fetchurl, lua, src, libjpeg, libpng
+{ luarocks, lib , stdenv,  readline,  makeWrapper,
+  less, ncurses, cmake, coreutils, fetchgit, libuuid, czmq, openssl,
+  gnuplot, lua, src, libjpeg, libpng
 } :
 
 let
diff --git a/pkgs/applications/science/math/R/default.nix b/pkgs/applications/science/math/R/default.nix
index 25ebee96a10..913fac6ac12 100644
--- a/pkgs/applications/science/math/R/default.nix
+++ b/pkgs/applications/science/math/R/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, bzip2, gfortran, libX11, libXmu, libXt, libjpeg, libpng
 , libtiff, ncurses, pango, pcre, perl, readline, tcl, texLive, tk, xz, zlib
 , less, texinfo, graphviz, icu, pkgconfig, bison, imake, which, jdk, openblas
-, curl, Cocoa, Foundation, cf-private, libobjc, libcxx, tzdata, fetchpatch
+, curl, Cocoa, Foundation, libobjc, libcxx, tzdata
 , withRecommendedPackages ? true
 , enableStrictBarrier ? false
 }:
diff --git a/pkgs/applications/science/math/cntk/default.nix b/pkgs/applications/science/math/cntk/default.nix
index 07740f4c8ae..fe5c77be8b2 100644
--- a/pkgs/applications/science/math/cntk/default.nix
+++ b/pkgs/applications/science/math/cntk/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchgit, fetchFromGitHub, fetchpatch, cmake
+{ lib, stdenv, fetchgit, fetchFromGitHub, cmake
 , openblas, opencv3, libzip, boost, protobuf, openmpi
 , onebitSGDSupport ? false
 , cudaSupport ? false, cudatoolkit, nvidia_x11
diff --git a/pkgs/applications/science/math/colpack/default.nix b/pkgs/applications/science/math/colpack/default.nix
index 29785363b04..e62df7f11cc 100644
--- a/pkgs/applications/science/math/colpack/default.nix
+++ b/pkgs/applications/science/math/colpack/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchFromGitHub, autoconf, automake, libtool, gettext }:
+{ stdenv, fetchFromGitHub, autoconf, automake, libtool, gettext }:
 
 stdenv.mkDerivation rec {
 
diff --git a/pkgs/applications/science/math/mathematica/10.nix b/pkgs/applications/science/math/mathematica/10.nix
index 6a49976c86b..4884ee1f93a 100644
--- a/pkgs/applications/science/math/mathematica/10.nix
+++ b/pkgs/applications/science/math/mathematica/10.nix
@@ -7,13 +7,11 @@
 , freetype
 , gcc
 , glib
-, libpng
 , ncurses
 , opencv
 , openssl
 , unixODBC
 , xorg
-, zlib
 , libxml2
 , libuuid
 }:
diff --git a/pkgs/applications/science/math/mathematica/9.nix b/pkgs/applications/science/math/mathematica/9.nix
index c4fd0c384c1..d60feb54695 100644
--- a/pkgs/applications/science/math/mathematica/9.nix
+++ b/pkgs/applications/science/math/mathematica/9.nix
@@ -7,13 +7,11 @@
 , freetype
 , gcc
 , glib
-, libpng
 , ncurses
 , opencv
 , openssl
 , unixODBC
 , xorg
-, zlib
 }:
 
 let
diff --git a/pkgs/applications/science/math/mathematica/default.nix b/pkgs/applications/science/math/mathematica/default.nix
index d2a518e9db0..fa4ff8b0068 100644
--- a/pkgs/applications/science/math/mathematica/default.nix
+++ b/pkgs/applications/science/math/mathematica/default.nix
@@ -8,7 +8,6 @@
 , freetype
 , gcc
 , glib
-, libpng
 , ncurses
 , opencv
 , openssl
diff --git a/pkgs/applications/science/math/sage/env-locations.nix b/pkgs/applications/science/math/sage/env-locations.nix
index 2ed079ab32b..288ffd6e0e1 100644
--- a/pkgs/applications/science/math/sage/env-locations.nix
+++ b/pkgs/applications/science/math/sage/env-locations.nix
@@ -1,5 +1,4 @@
-{ stdenv
-, writeTextFile
+{ writeTextFile
 , pari_data
 , pari
 , singular
diff --git a/pkgs/applications/science/math/sage/openblas-pc.nix b/pkgs/applications/science/math/sage/openblas-pc.nix
index ba46850bbc6..f4669a6557e 100644
--- a/pkgs/applications/science/math/sage/openblas-pc.nix
+++ b/pkgs/applications/science/math/sage/openblas-pc.nix
@@ -1,5 +1,4 @@
-{ stdenv
-, openblasCompat
+{ openblasCompat
 , writeTextFile
 , name
 }:
diff --git a/pkgs/applications/science/math/sage/sage-with-env.nix b/pkgs/applications/science/math/sage/sage-with-env.nix
index 3d1ebe87c6b..63b9772b823 100644
--- a/pkgs/applications/science/math/sage/sage-with-env.nix
+++ b/pkgs/applications/science/math/sage/sage-with-env.nix
@@ -3,8 +3,6 @@
 , makeWrapper
 , sage-env
 , sage-src
-, sagelib
-, sagedoc
 , openblasCompat
 , openblas-blas-pc
 , openblas-cblas-pc
@@ -14,7 +12,6 @@
 , singular
 , libgap
 , gap-libgap-compatible
-, gcc
 , giac
 , maxima-ecl
 , pari
diff --git a/pkgs/applications/science/math/sage/sagedoc.nix b/pkgs/applications/science/math/sage/sagedoc.nix
index 7b280e9e028..a594428a389 100644
--- a/pkgs/applications/science/math/sage/sagedoc.nix
+++ b/pkgs/applications/science/math/sage/sagedoc.nix
@@ -1,7 +1,5 @@
-{ pkgs
-, stdenv
+{ stdenv
 , sage-src
-, env-locations
 , sage-with-env
 , sagelib
 , python2
diff --git a/pkgs/applications/science/math/sage/sagelib.nix b/pkgs/applications/science/math/sage/sagelib.nix
index a053d997bf9..abcefba5e26 100644
--- a/pkgs/applications/science/math/sage/sagelib.nix
+++ b/pkgs/applications/science/math/sage/sagelib.nix
@@ -1,5 +1,4 @@
-{ stdenv
-, sage-src
+{ sage-src
 , perl
 , buildPythonPackage
 , arb
diff --git a/pkgs/applications/science/math/scilab/default.nix b/pkgs/applications/science/math/scilab/default.nix
index fcdbb6b985d..6063a45a3ef 100644
--- a/pkgs/applications/science/math/scilab/default.nix
+++ b/pkgs/applications/science/math/scilab/default.nix
@@ -1,6 +1,6 @@
 {stdenv, fetchurl, lib, gfortran
 , ncurses
-, Xaw3d, withXaw3d ? false
+, withXaw3d ? false
 #, withPVMlib ? false
 , tcl, tk, withTk ? false
 , gtk2, withGtk ? false # working ?
diff --git a/pkgs/applications/science/math/singular/default.nix b/pkgs/applications/science/math/singular/default.nix
index cec1a831c91..8be302f41e5 100644
--- a/pkgs/applications/science/math/singular/default.nix
+++ b/pkgs/applications/science/math/singular/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, gmp, bison, perl, autoconf, ncurses, readline, coreutils, pkgconfig
+{ stdenv, fetchurl, gmp, bison, perl, ncurses, readline, coreutils, pkgconfig
 , autoreconfHook
 , file
 , flint
diff --git a/pkgs/applications/science/misc/gephi/default.nix b/pkgs/applications/science/misc/gephi/default.nix
index 3a0bcb66813..b81f188a91b 100644
--- a/pkgs/applications/science/misc/gephi/default.nix
+++ b/pkgs/applications/science/misc/gephi/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, callPackage, jdk, maven, javaPackages }:
+{ stdenv, fetchFromGitHub, jdk, maven, javaPackages }:
 
 let
   version = "0.9.2";
diff --git a/pkgs/applications/science/misc/golly/beta.nix b/pkgs/applications/science/misc/golly/beta.nix
index f423adbe786..dc768725d4f 100644
--- a/pkgs/applications/science/misc/golly/beta.nix
+++ b/pkgs/applications/science/misc/golly/beta.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl, fetchgit
+{stdenv, fetchgit
 , wxGTK, perl, python2, zlib, libGLU_combined, libX11
 , automake, autoconf
 }:
diff --git a/pkgs/applications/science/misc/openmvg/default.nix b/pkgs/applications/science/misc/openmvg/default.nix
index 0f0c6aaf74d..c3e1cd60bf0 100644
--- a/pkgs/applications/science/misc/openmvg/default.nix
+++ b/pkgs/applications/science/misc/openmvg/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchgit, pkgconfig, cmake
+{ stdenv, fetchgit, pkgconfig, cmake
 , libjpeg ? null
 , zlib ? null
 , libpng ? null
diff --git a/pkgs/applications/science/misc/openmvs/default.nix b/pkgs/applications/science/misc/openmvs/default.nix
index 4e5b986a428..b665d5f4f68 100644
--- a/pkgs/applications/science/misc/openmvs/default.nix
+++ b/pkgs/applications/science/misc/openmvs/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, pkgconfig, cmake
+{ stdenv, fetchFromGitHub, pkgconfig, cmake
 , eigen, opencv, ceres-solver, cgal, boost, vcg
 , gmp, mpfr, glog, google-gflags, libjpeg_turbo }:
 
diff --git a/pkgs/applications/science/misc/root/default.nix b/pkgs/applications/science/misc/root/default.nix
index 00ca1d2c7ab..e966e798ae6 100644
--- a/pkgs/applications/science/misc/root/default.nix
+++ b/pkgs/applications/science/misc/root/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchpatch, cmake, pcre, pkgconfig, python2
+{ stdenv, fetchurl, cmake, pcre, pkgconfig, python2
 , libX11, libXpm, libXft, libXext, libGLU_combined, zlib, libxml2, lz4, lzma, gsl, xxHash
 , Cocoa, OpenGL, noSplash ? false }:
 
diff --git a/pkgs/applications/science/robotics/gazebo/default.nix b/pkgs/applications/science/robotics/gazebo/default.nix
index babd87eb2b1..98ccd92c4ee 100644
--- a/pkgs/applications/science/robotics/gazebo/default.nix
+++ b/pkgs/applications/science/robotics/gazebo/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, cmake, pkgconfig, boost, protobuf, freeimage
   , boost-build, boost_process
   , xorg_sys_opengl, tbb, ogre, tinyxml-2
-  , libtar, glxinfo,  libusb, libxslt, ruby, ignition
+  , libtar, glxinfo,  libusb, libxslt, ignition
   , pythonPackages, utillinux
 
   # these deps are hidden; cmake doesn't catch them
diff --git a/pkgs/applications/science/robotics/qgroundcontrol/default.nix b/pkgs/applications/science/robotics/qgroundcontrol/default.nix
index 95462c02eb5..ce3317da9f8 100644
--- a/pkgs/applications/science/robotics/qgroundcontrol/default.nix
+++ b/pkgs/applications/science/robotics/qgroundcontrol/default.nix
@@ -1,8 +1,8 @@
-{ stdenv, fetchgit, git,  espeak, SDL2, udev, doxygen, cmake
+{ stdenv, fetchgit, git,  SDL2, udev, doxygen
 , qtbase, qtlocation, qtserialport, qtdeclarative, qtconnectivity, qtxmlpatterns
 , qtsvg, qtquick1, qtquickcontrols, qtgraphicaleffects, qmake, qtspeech
-, makeWrapper, lndir
-, gst_all_1, qt-gstreamer1, pkgconfig, glibc
+, makeWrapper
+, gst_all_1, pkgconfig
 }:
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/applications/science/robotics/yarp/default.nix b/pkgs/applications/science/robotics/yarp/default.nix
index 98576cfd091..507481cddab 100644
--- a/pkgs/applications/science/robotics/yarp/default.nix
+++ b/pkgs/applications/science/robotics/yarp/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, pkgconfig, cmake, ace
+{ stdenv, fetchFromGitHub, cmake, ace
 }:
 
 stdenv.mkDerivation rec {
diff --git a/pkgs/applications/science/spyder/default.nix b/pkgs/applications/science/spyder/default.nix
index 4411d78cec2..0564f3de1b7 100644
--- a/pkgs/applications/science/spyder/default.nix
+++ b/pkgs/applications/science/spyder/default.nix
@@ -1,7 +1,7 @@
-{ stdenv, fetchPypi, unzip, buildPythonApplication, makeDesktopItem
+{ stdenv, fetchPypi, buildPythonApplication, makeDesktopItem
 # mandatory
 , numpydoc, qtconsole, qtawesome, jedi, pycodestyle, psutil
-, pyflakes, rope, sphinx, nbconvert, mccabe, pyopengl, cloudpickle
+, pyflakes, rope, nbconvert, mccabe, pyopengl, cloudpickle
 # optional
 , numpy ? null, scipy ? null, matplotlib ? null
 # optional