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-rw-r--r--pkgs/tools/X11/alttab/default.nix4
-rw-r--r--pkgs/tools/X11/bgs/default.nix4
-rw-r--r--pkgs/tools/X11/bumblebee/default.nix4
-rw-r--r--pkgs/tools/X11/dragon-drop/default.nix4
-rw-r--r--pkgs/tools/X11/keynav/default.nix4
-rw-r--r--pkgs/tools/X11/ksuperkey/default.nix4
-rw-r--r--pkgs/tools/X11/nitrogen/default.nix4
-rw-r--r--pkgs/tools/X11/nx-libs/default.nix4
-rw-r--r--pkgs/tools/X11/obconf/default.nix4
-rw-r--r--pkgs/tools/X11/runningx/default.nix4
-rw-r--r--pkgs/tools/X11/screen-message/default.nix4
-rw-r--r--pkgs/tools/X11/skippy-xd/default.nix4
-rw-r--r--pkgs/tools/X11/vdpauinfo/default.nix4
-rw-r--r--pkgs/tools/X11/wmctrl/default.nix4
-rw-r--r--pkgs/tools/X11/x11spice/default.nix4
-rw-r--r--pkgs/tools/X11/x11vnc/default.nix4
-rw-r--r--pkgs/tools/X11/xautomation/default.nix4
-rw-r--r--pkgs/tools/X11/xbindkeys-config/default.nix4
-rw-r--r--pkgs/tools/X11/xbindkeys/default.nix4
-rw-r--r--pkgs/tools/X11/xcape/default.nix4
-rw-r--r--pkgs/tools/X11/xdotool/default.nix4
-rw-r--r--pkgs/tools/X11/xidlehook/default.nix4
-rw-r--r--pkgs/tools/X11/xinput_calibrator/default.nix4
-rw-r--r--pkgs/tools/X11/xmousepasteblock/default.nix4
-rw-r--r--pkgs/tools/X11/xnee/default.nix4
-rw-r--r--pkgs/tools/X11/xpra/default.nix4
-rw-r--r--pkgs/tools/X11/xprintidle-ng/default.nix4
-rw-r--r--pkgs/tools/X11/xrestop/default.nix4
-rw-r--r--pkgs/tools/X11/xsecurelock/default.nix4
-rw-r--r--pkgs/tools/X11/xsettingsd/default.nix4
-rw-r--r--pkgs/tools/X11/xwinmosaic/default.nix4
31 files changed, 62 insertions, 62 deletions
diff --git a/pkgs/tools/X11/alttab/default.nix b/pkgs/tools/X11/alttab/default.nix
index 4c9c0b66a505..4bddee68f826 100644
--- a/pkgs/tools/X11/alttab/default.nix
+++ b/pkgs/tools/X11/alttab/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, autoconf, automake, pkgconfig, ronn, libpng, uthash
+{ lib, stdenv, fetchFromGitHub, autoconf, automake, pkg-config, ronn, libpng, uthash
 , xorg }:
 
 stdenv.mkDerivation rec {
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ 
     autoconf
     automake
-    pkgconfig
+    pkg-config
     ronn
   ];
 
diff --git a/pkgs/tools/X11/bgs/default.nix b/pkgs/tools/X11/bgs/default.nix
index 9db666672d48..fc6f7752a3a4 100644
--- a/pkgs/tools/X11/bgs/default.nix
+++ b/pkgs/tools/X11/bgs/default.nix
@@ -1,4 +1,4 @@
-{lib, stdenv, fetchurl, pkgconfig, libX11, libXinerama, imlib2}:
+{lib, stdenv, fetchurl, pkg-config, libX11, libXinerama, imlib2}:
 
 stdenv.mkDerivation rec {
 
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
     sha256 = "1rw9ingkkpvvr2dixx126ziim67a54r8k49918h1mbph0fjj08n5";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ libX11 libXinerama imlib2 ];
 
diff --git a/pkgs/tools/X11/bumblebee/default.nix b/pkgs/tools/X11/bumblebee/default.nix
index 8bd65ec2fc2c..706194cc0dd0 100644
--- a/pkgs/tools/X11/bumblebee/default.nix
+++ b/pkgs/tools/X11/bumblebee/default.nix
@@ -16,7 +16,7 @@
 #
 # To use at startup, see hardware.bumblebee options.
 
-{ stdenv, lib, fetchurl, fetchpatch, pkgconfig, help2man, makeWrapper
+{ stdenv, lib, fetchurl, fetchpatch, pkg-config, help2man, makeWrapper
 , glib, libbsd
 , libX11, xorgserver, kmod, xf86videonouveau
 , nvidia_x11, virtualgl, libglvnd
@@ -103,7 +103,7 @@ in stdenv.mkDerivation rec {
   # Build-time dependencies of bumblebeed and optirun.
   # Note that it has several runtime dependencies.
   buildInputs = [ libX11 glib libbsd kmod ];
-  nativeBuildInputs = [ makeWrapper pkgconfig help2man automake111x autoconf ];
+  nativeBuildInputs = [ makeWrapper pkg-config help2man automake111x autoconf ];
 
   # The order of LDPATH is very specific: First X11 then the host
   # environment then the optional sub architecture paths.
diff --git a/pkgs/tools/X11/dragon-drop/default.nix b/pkgs/tools/X11/dragon-drop/default.nix
index 632fc844e5ed..adf43ae8c08d 100644
--- a/pkgs/tools/X11/dragon-drop/default.nix
+++ b/pkgs/tools/X11/dragon-drop/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, gtk, pkgconfig, fetchFromGitHub }:
+{ lib, stdenv, gtk, pkg-config, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
   pname = "dragon-drop";
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "0fgzz39007fdjwq72scp0qygp2v3zc5f1xkm0sxaa8zxm25g1bra";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [ gtk ];
 
   installPhase = ''
diff --git a/pkgs/tools/X11/keynav/default.nix b/pkgs/tools/X11/keynav/default.nix
index d737ba56ed86..75b5bc2356a1 100644
--- a/pkgs/tools/X11/keynav/default.nix
+++ b/pkgs/tools/X11/keynav/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, pkgconfig, libX11, xorgproto, libXtst, libXi, libXext
+{ lib, stdenv, fetchFromGitHub, pkg-config, libX11, xorgproto, libXtst, libXi, libXext
 , libXinerama, libXrandr, glib, cairo, xdotool }:
 
 let release = "20180821"; in
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
     sha256 = "0hmc14fj612z5h7gjgk95zyqab3p35c4a99snnblzxfg0p3x2f1d";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libX11 xorgproto libXtst libXi libXext libXinerama libXrandr
                   glib cairo xdotool ];
 
diff --git a/pkgs/tools/X11/ksuperkey/default.nix b/pkgs/tools/X11/ksuperkey/default.nix
index aed85f978cd5..144841209304 100644
--- a/pkgs/tools/X11/ksuperkey/default.nix
+++ b/pkgs/tools/X11/ksuperkey/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, libX11, libXtst, pkgconfig, xorgproto, libXi }:
+{ lib, stdenv, fetchFromGitHub, libX11, libXtst, pkg-config, xorgproto, libXi }:
 
 stdenv.mkDerivation rec {
   pname = "ksuperkey";
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [ "PREFIX=${placeholder "out"}" ];
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libX11 libXtst xorgproto libXi ];
 
   meta = with lib; {
diff --git a/pkgs/tools/X11/nitrogen/default.nix b/pkgs/tools/X11/nitrogen/default.nix
index 8521c1dbc29a..432193950cdd 100644
--- a/pkgs/tools/X11/nitrogen/default.nix
+++ b/pkgs/tools/X11/nitrogen/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, pkgconfig, glib, gtkmm2 }:
+{ lib, stdenv, fetchurl, pkg-config, glib, gtkmm2 }:
 
 let version = "1.6.1";
 in
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "0zc3fl1mbhq0iyndy4ysmy8vv5c7xwf54rbgamzfhfvsgdq160pl";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ glib gtkmm2 ];
 
diff --git a/pkgs/tools/X11/nx-libs/default.nix b/pkgs/tools/X11/nx-libs/default.nix
index b685ba8cf42c..bb763962cebf 100644
--- a/pkgs/tools/X11/nx-libs/default.nix
+++ b/pkgs/tools/X11/nx-libs/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, autoconf, automake, fetchFromGitHub, libgcc, libjpeg_turbo
-, libpng, libtool, libxml2, pkgconfig, which, xorg
+, libpng, libtool, libxml2, pkg-config, which, xorg
 , libtirpc
 }:
 stdenv.mkDerivation rec {
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
     sha256 = "01aqdwy0i4nxdyfa24bwnrqjz93q0idihdaqals2yjqpg160nwfc";
   };
 
-  nativeBuildInputs = [ autoconf automake libtool pkgconfig which
+  nativeBuildInputs = [ autoconf automake libtool pkg-config which
     xorg.gccmakedep xorg.imake ];
   buildInputs = [ libgcc libjpeg_turbo libpng libxml2 xorg.fontutil
     xorg.libXcomposite xorg.libXdamage xorg.libXdmcp xorg.libXext xorg.libXfont2
diff --git a/pkgs/tools/X11/obconf/default.nix b/pkgs/tools/X11/obconf/default.nix
index 0ca2eb3de790..5cbcec63c59d 100644
--- a/pkgs/tools/X11/obconf/default.nix
+++ b/pkgs/tools/X11/obconf/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, pkgconfig, gtk2, libglade, openbox,
+{ lib, stdenv, fetchurl, pkg-config, gtk2, libglade, openbox,
   imlib2, libstartup_notification, makeWrapper, libSM }:
 
 stdenv.mkDerivation rec {
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
     sha256 = "1fanjdmd8727kk74x5404vi8v7s4kpq48l583d12fsi4xvsfb8vi";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [
     gtk2 libglade libSM openbox imlib2 libstartup_notification
     makeWrapper
diff --git a/pkgs/tools/X11/runningx/default.nix b/pkgs/tools/X11/runningx/default.nix
index 4052bbc8a556..ae0e5b89a619 100644
--- a/pkgs/tools/X11/runningx/default.nix
+++ b/pkgs/tools/X11/runningx/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, pkgconfig, libX11 }:
+{ lib, stdenv, fetchurl, pkg-config, libX11 }:
 
 stdenv.mkDerivation {
   pname = "runningx";
@@ -9,7 +9,7 @@ stdenv.mkDerivation {
     sha256 = "1mikkhrx6jsx716041qdy3nwjac08pxxvxyq2yablm8zg9hrip0d";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ libX11 ];
 
diff --git a/pkgs/tools/X11/screen-message/default.nix b/pkgs/tools/X11/screen-message/default.nix
index cb24859c1e2b..c1cef23a695b 100644
--- a/pkgs/tools/X11/screen-message/default.nix
+++ b/pkgs/tools/X11/screen-message/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, autoreconfHook, pkgconfig, gtk3 }:
+{ lib, stdenv, fetchurl, autoreconfHook, pkg-config, gtk3 }:
 
 stdenv.mkDerivation rec {
   pname = "screen-message";
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "1lw955qq5pq010lzmaf32ylj2iprgsri9ih4hx672c3f794ilab0";
   };
 
-  nativeBuildInputs = [ autoreconfHook pkgconfig ];
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ gtk3 ];
 
   # screen-message installs its binary in $(prefix)/games per default
diff --git a/pkgs/tools/X11/skippy-xd/default.nix b/pkgs/tools/X11/skippy-xd/default.nix
index f38aa2c2c187..adf3b3d9250c 100644
--- a/pkgs/tools/X11/skippy-xd/default.nix
+++ b/pkgs/tools/X11/skippy-xd/default.nix
@@ -1,10 +1,10 @@
 {lib, stdenv, fetchgit, xorgproto, libX11, libXft, libXcomposite, libXdamage
-, libXext, libXinerama, libjpeg, giflib, pkgconfig
+, libXext, libXinerama, libjpeg, giflib, pkg-config
 }:
 let
   buildInputs = [
     xorgproto libX11 libXft libXcomposite libXdamage libXext
-    libXinerama libjpeg giflib pkgconfig
+    libXinerama libjpeg giflib pkg-config
   ];
 in
 stdenv.mkDerivation rec {
diff --git a/pkgs/tools/X11/vdpauinfo/default.nix b/pkgs/tools/X11/vdpauinfo/default.nix
index 73f94768bcd9..35305d44635f 100644
--- a/pkgs/tools/X11/vdpauinfo/default.nix
+++ b/pkgs/tools/X11/vdpauinfo/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, pkgconfig, libvdpau }:
+{ lib, stdenv, fetchurl, pkg-config, libvdpau }:
 
 stdenv.mkDerivation rec {
   pname = "vdpauinfo";
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "0s6jdadnycyd1agsnfx7hrf17hmipasx1fpmppd4m1z6i9sp1i6g";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libvdpau ];
 
   meta = with lib; {
diff --git a/pkgs/tools/X11/wmctrl/default.nix b/pkgs/tools/X11/wmctrl/default.nix
index 9247d0fe2e02..0a01a3dad5a4 100644
--- a/pkgs/tools/X11/wmctrl/default.nix
+++ b/pkgs/tools/X11/wmctrl/default.nix
@@ -2,7 +2,7 @@
 , fetchurl
 , libX11
 , glib
-, pkgconfig
+, pkg-config
 , libXmu
 }:
 
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
     sha256 = "1afclc57b9017a73mfs9w7lbdvdipmf9q0xdk116f61gnvyix2np";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libX11 libXmu glib ];
 
   patches = [ ./64-bit-data.patch ];
diff --git a/pkgs/tools/X11/x11spice/default.nix b/pkgs/tools/X11/x11spice/default.nix
index 7f3bfbf75a43..4facc365c1ed 100644
--- a/pkgs/tools/X11/x11spice/default.nix
+++ b/pkgs/tools/X11/x11spice/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitLab, autoreconfHook, pkgconfig
+{ lib, stdenv, fetchFromGitLab, autoreconfHook, pkg-config
 , xorg, gtk2, spice, spice-protocol
 }:
 
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
     sha256 = "0va5ix14vnqch59gq8wvrhw6q0w0n27sy70xx5kvfj2cl0h1xpg8";
   };
 
-  nativeBuildInputs = [ autoreconfHook pkgconfig ];
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
 
   buildInputs = [
     xorg.libxcb xorg.xcbutil xorg.utilmacros
diff --git a/pkgs/tools/X11/x11vnc/default.nix b/pkgs/tools/X11/x11vnc/default.nix
index 7264311d2dd5..bd10127f729f 100644
--- a/pkgs/tools/X11/x11vnc/default.nix
+++ b/pkgs/tools/X11/x11vnc/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, fetchFromGitHub, fetchpatch,
   openssl, zlib, libjpeg, xorg, coreutils, libvncserver,
-  autoreconfHook, pkgconfig }:
+  autoreconfHook, pkg-config }:
 
 stdenv.mkDerivation rec {
   pname = "x11vnc";
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  nativeBuildInputs = [ autoreconfHook pkgconfig ];
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
 
   buildInputs =
     [ xorg.libXfixes xorg.xorgproto openssl xorg.libXdamage
diff --git a/pkgs/tools/X11/xautomation/default.nix b/pkgs/tools/X11/xautomation/default.nix
index ef0d04410bb0..0521b6f8b3b4 100644
--- a/pkgs/tools/X11/xautomation/default.nix
+++ b/pkgs/tools/X11/xautomation/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, pkgconfig, libpng, libX11, libXext, libXi, libXtst }:
+{ lib, stdenv, fetchurl, pkg-config, libpng, libX11, libXext, libXi, libXtst }:
 
 let version = "1.09"; in
 stdenv.mkDerivation {
@@ -9,7 +9,7 @@ stdenv.mkDerivation {
     sha256 = "03azv5wpg65h40ip2kk1kdh58vix4vy1r9bihgsq59jx2rhjr3zf";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libpng libX11 libXext libXi libXtst ];
 
   meta = {
diff --git a/pkgs/tools/X11/xbindkeys-config/default.nix b/pkgs/tools/X11/xbindkeys-config/default.nix
index 1f3537d5b5ac..ec40e0b06db4 100644
--- a/pkgs/tools/X11/xbindkeys-config/default.nix
+++ b/pkgs/tools/X11/xbindkeys-config/default.nix
@@ -1,10 +1,10 @@
-{ lib, stdenv, fetchurl, gtk, pkgconfig, procps, makeWrapper, ... }:
+{ lib, stdenv, fetchurl, gtk, pkg-config, procps, makeWrapper, ... }:
 
 stdenv.mkDerivation rec {
   pname = "xbindkeys-config";
   version = "0.1.3";
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [ gtk makeWrapper ];
 
   src = fetchurl {
diff --git a/pkgs/tools/X11/xbindkeys/default.nix b/pkgs/tools/X11/xbindkeys/default.nix
index 8c65845f8bd0..ba45442a4492 100644
--- a/pkgs/tools/X11/xbindkeys/default.nix
+++ b/pkgs/tools/X11/xbindkeys/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, pkgconfig, libX11, guile }:
+{ lib, stdenv, fetchurl, pkg-config, libX11, guile }:
 
 let version = "1.8.7"; in
 stdenv.mkDerivation {
@@ -9,7 +9,7 @@ stdenv.mkDerivation {
     sha256 = "1wl2vc5alisiwyk8m07y1ryq8w3ll9ym83j27g4apm4ixjl8d6x2";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libX11 guile ];
 
   meta = {
diff --git a/pkgs/tools/X11/xcape/default.nix b/pkgs/tools/X11/xcape/default.nix
index ab9e0c345429..f8d4376017bd 100644
--- a/pkgs/tools/X11/xcape/default.nix
+++ b/pkgs/tools/X11/xcape/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, pkgconfig, libX11, libXtst, xorgproto,
+{ lib, stdenv, fetchFromGitHub, pkg-config, libX11, libXtst, xorgproto,
 libXi }:
 
 stdenv.mkDerivation rec {
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
     sha256 = "04grs4w9kpfzz25mqw82zdiy51g0w355gpn5b170p7ha5972ykc8";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ libX11 libXtst xorgproto libXi ];
 
diff --git a/pkgs/tools/X11/xdotool/default.nix b/pkgs/tools/X11/xdotool/default.nix
index 924557f62217..5779f5270f71 100644
--- a/pkgs/tools/X11/xdotool/default.nix
+++ b/pkgs/tools/X11/xdotool/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, pkgconfig, libX11, perl, libXtst, xorgproto, libXi, libXinerama, libxkbcommon }:
+{ lib, stdenv, fetchurl, pkg-config, libX11, perl, libXtst, xorgproto, libXi, libXinerama, libxkbcommon }:
 
 stdenv.mkDerivation rec {
   pname = "xdotool";
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "1a6c1zr86zb53352yxv104l76l8x21gfl2bgw6h21iphxpv5zgim";
   };
 
-  nativeBuildInputs = [ pkgconfig perl ];
+  nativeBuildInputs = [ pkg-config perl ];
   buildInputs = [ libX11 libXtst xorgproto libXi libXinerama libxkbcommon ];
 
   preBuild = ''
diff --git a/pkgs/tools/X11/xidlehook/default.nix b/pkgs/tools/X11/xidlehook/default.nix
index 35f0d73ea0b7..08fa4f155624 100644
--- a/pkgs/tools/X11/xidlehook/default.nix
+++ b/pkgs/tools/X11/xidlehook/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, rustPlatform, fetchFromGitLab, python3
-, xlibsWrapper, xorg, libpulseaudio, pkgconfig, patchelf, Security }:
+, xlibsWrapper, xorg, libpulseaudio, pkg-config, patchelf, Security }:
 
 rustPlatform.buildRustPackage rec {
   pname = "xidlehook";
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
   cargoSha256 = "050ihjhg33223x6pgvhqrjprx1clkj2x3jr6acf716vbwm3m0bmz";
 
   buildInputs = [ xlibsWrapper xorg.libXScrnSaver libpulseaudio ] ++ lib.optional stdenv.isDarwin Security;
-  nativeBuildInputs = [ pkgconfig patchelf python3 ];
+  nativeBuildInputs = [ pkg-config patchelf python3 ];
 
   postFixup = lib.optionalString stdenv.isLinux ''
     RPATH="$(patchelf --print-rpath $out/bin/xidlehook)"
diff --git a/pkgs/tools/X11/xinput_calibrator/default.nix b/pkgs/tools/X11/xinput_calibrator/default.nix
index 1e4cfc6e0c92..2f74db17c372 100644
--- a/pkgs/tools/X11/xinput_calibrator/default.nix
+++ b/pkgs/tools/X11/xinput_calibrator/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, libXi, xorgproto, autoconf, automake, libtool, m4, xlibsWrapper, pkgconfig }:
+{ lib, stdenv, fetchurl, libXi, xorgproto, autoconf, automake, libtool, m4, xlibsWrapper, pkg-config }:
 
 stdenv.mkDerivation rec {
   pname = "xinput_calibrator";
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
 
   preConfigure = "./autogen.sh --with-gui=X11";
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [ xorgproto libXi autoconf automake libtool m4 xlibsWrapper ];
 
   meta = {
diff --git a/pkgs/tools/X11/xmousepasteblock/default.nix b/pkgs/tools/X11/xmousepasteblock/default.nix
index 2c63e5fd4fc8..35db8a133a23 100644
--- a/pkgs/tools/X11/xmousepasteblock/default.nix
+++ b/pkgs/tools/X11/xmousepasteblock/default.nix
@@ -1,4 +1,4 @@
-{ xorg, lib, stdenv, libev, fetchFromGitHub, pkgconfig }:
+{ xorg, lib, stdenv, libev, fetchFromGitHub, pkg-config }:
 
 stdenv.mkDerivation rec {
   pname = "xmousepasteblock";
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
   };
   makeFlags = "PREFIX=$(out)";
   buildInputs = with xorg; [ libX11 libXext libXi libev ];
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   meta = with lib; {
     description = "Middle mouse button primary X selection/clipboard paste disabler";
     homepage = "https://github.com/milaq/XMousePasteBlock";
diff --git a/pkgs/tools/X11/xnee/default.nix b/pkgs/tools/X11/xnee/default.nix
index 75f4956651e7..c3355b802633 100644
--- a/pkgs/tools/X11/xnee/default.nix
+++ b/pkgs/tools/X11/xnee/default.nix
@@ -1,5 +1,5 @@
 { fetchurl, lib, stdenv, libX11, xorgproto, libXext, libXtst
-, gtk2, libXi, pkgconfig, texinfo }:
+, gtk2, libXi, pkg-config, texinfo }:
 
 stdenv.mkDerivation rec {
   version = "3.19";
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   buildInputs =
     [ libX11 xorgproto libXext libXtst gtk2
-      libXi pkgconfig
+      libXi pkg-config
       texinfo
     ];
 
diff --git a/pkgs/tools/X11/xpra/default.nix b/pkgs/tools/X11/xpra/default.nix
index f7e64ca3d7e7..0c1accd36fbd 100644
--- a/pkgs/tools/X11/xpra/default.nix
+++ b/pkgs/tools/X11/xpra/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchurl, callPackage, substituteAll, python3, pkgconfig, writeText
+{ stdenv, lib, fetchurl, callPackage, substituteAll, python3, pkg-config, writeText
 , xorg, gtk3, glib, pango, cairo, gdk-pixbuf, atk
 , wrapGAppsHook, xorgserver, getopt, xauth, util-linux, which
 , ffmpeg, x264, libvpx, libwebp, x265
@@ -50,7 +50,7 @@ in buildPythonApplication rec {
     substituteInPlace setup.py --replace '/usr/include/security' '${pam}/include/security'
   '';
 
-  nativeBuildInputs = [ pkgconfig wrapGAppsHook ];
+  nativeBuildInputs = [ pkg-config wrapGAppsHook ];
   buildInputs = with xorg; [
     libX11 xorgproto libXrender libXi
     libXtst libXfixes libXcomposite libXdamage
diff --git a/pkgs/tools/X11/xprintidle-ng/default.nix b/pkgs/tools/X11/xprintidle-ng/default.nix
index dadbfd01cb9b..9e7b85f6ef99 100644
--- a/pkgs/tools/X11/xprintidle-ng/default.nix
+++ b/pkgs/tools/X11/xprintidle-ng/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, fetchFromGitHub, libX11, libXScrnSaver, libXext, gnulib
-  , autoconf, automake, libtool, gettext, pkgconfig
+  , autoconf, automake, libtool, gettext, pkg-config
   , git, perl, texinfo, help2man
 }:
 
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     autoconf automake gettext git gnulib
-    help2man libtool perl pkgconfig texinfo
+    help2man libtool perl pkg-config texinfo
   ];
 
   configurePhase = ''
diff --git a/pkgs/tools/X11/xrestop/default.nix b/pkgs/tools/X11/xrestop/default.nix
index 945f21c8cb10..e2b87e7380c1 100644
--- a/pkgs/tools/X11/xrestop/default.nix
+++ b/pkgs/tools/X11/xrestop/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, xorg, pkgconfig, ncurses }:
+{ lib, stdenv, fetchurl, xorg, pkg-config, ncurses }:
 stdenv.mkDerivation {
 
   pname = "xrestop";
@@ -9,7 +9,7 @@ stdenv.mkDerivation {
     sha256 = "0mz27jpij8am1s32i63mdm58znfijcpfhdqq1npbmvgclyagrhk7";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkg-config ];
   buildInputs = [ xorg.libX11 xorg.libXres xorg.libXext ncurses ];
 
   meta = {
diff --git a/pkgs/tools/X11/xsecurelock/default.nix b/pkgs/tools/X11/xsecurelock/default.nix
index 99d695df2674..5c43dc6dff4a 100644
--- a/pkgs/tools/X11/xsecurelock/default.nix
+++ b/pkgs/tools/X11/xsecurelock/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkgconfig
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config
 , libX11, libXcomposite, libXft, libXmu, libXrandr, libXext, libXScrnSaver
 , pam, apacheHttpd, pamtester, xscreensaver }:
 
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [
-    autoreconfHook pkgconfig
+    autoreconfHook pkg-config
   ];
   buildInputs = [
     libX11 libXcomposite libXft libXmu libXrandr libXext libXScrnSaver
diff --git a/pkgs/tools/X11/xsettingsd/default.nix b/pkgs/tools/X11/xsettingsd/default.nix
index 55262125fadb..0bb1e5172ff4 100644
--- a/pkgs/tools/X11/xsettingsd/default.nix
+++ b/pkgs/tools/X11/xsettingsd/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, scons, pkgconfig, libX11 }:
+{ lib, stdenv, fetchFromGitHub, scons, pkg-config, libX11 }:
 
 stdenv.mkDerivation rec {
   pname = "xsettingsd";
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
     ./SConstruct.patch
   ];
 
-  nativeBuildInputs = [ scons pkgconfig ];
+  nativeBuildInputs = [ scons pkg-config ];
 
   buildInputs = [ libX11 ];
 
diff --git a/pkgs/tools/X11/xwinmosaic/default.nix b/pkgs/tools/X11/xwinmosaic/default.nix
index 553a4c2b7ede..81cefb01c7f7 100644
--- a/pkgs/tools/X11/xwinmosaic/default.nix
+++ b/pkgs/tools/X11/xwinmosaic/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, gtk2, cmake, pkgconfig, libXdamage }:
+{ lib, stdenv, fetchFromGitHub, gtk2, cmake, pkg-config, libXdamage }:
 
 stdenv.mkDerivation rec {
   version = "0.4.2";
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "16qhrpgn84fz0q3nfvaz5sisc82zk6y7c0sbvbr69zfx5fwbs1rr";
   };
 
-  nativeBuildInputs = [ pkgconfig cmake ];
+  nativeBuildInputs = [ pkg-config cmake ];
   buildInputs = [ gtk2 libXdamage ];
 
   meta = {