diff --git a/pkgs/data/documentation/gnome-user-docs/default.nix b/pkgs/data/documentation/gnome-user-docs/default.nix
index 30f8d736d32e..ebd171c65455 100644
--- a/pkgs/data/documentation/gnome-user-docs/default.nix
+++ b/pkgs/data/documentation/gnome-user-docs/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   version = "3.38.2";
 
   src = fetchurl {
-    url = "mirror://gnome/sources/gnome-user-docs/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
+    url = "mirror://gnome/sources/gnome-user-docs/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
     sha256 = "1h9lyn80zccmgi6gpymabgrcj7km0sb1axll5z490qnx74xbn37m";
   };
 
diff --git a/pkgs/data/documentation/man-pages-posix/default.nix b/pkgs/data/documentation/man-pages-posix/default.nix
index 8a76bcb2c448..a65b176f88fc 100644
--- a/pkgs/data/documentation/man-pages-posix/default.nix
+++ b/pkgs/data/documentation/man-pages-posix/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl}:
+{lib, stdenv, fetchurl}:
 
 stdenv.mkDerivation rec {
   name = "man-pages-posix-2013-a";
@@ -16,6 +16,6 @@ stdenv.mkDerivation rec {
   meta = {
     description = "POSIX man-pages (0p, 1p, 3p)";
     homepage = "https://www.kernel.org/doc/man-pages/";
-    platforms = stdenv.lib.platforms.unix;
+    platforms = lib.platforms.unix;
   };
 }
diff --git a/pkgs/data/fonts/cantarell-fonts/default.nix b/pkgs/data/fonts/cantarell-fonts/default.nix
index 4c3459d0f114..5129cf271886 100644
--- a/pkgs/data/fonts/cantarell-fonts/default.nix
+++ b/pkgs/data/fonts/cantarell-fonts/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, meson, ninja, gettext, appstream-glib, gnome3 }:
+{ lib, stdenv, fetchurl, meson, ninja, gettext, appstream-glib, gnome3 }:
 
 let
   pname = "cantarell-fonts";
@@ -7,7 +7,7 @@ in stdenv.mkDerivation rec {
   name = "${pname}-${version}";
 
   src = fetchurl {
-    url = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${name}.tar.xz";
+    url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${name}.tar.xz";
     sha256 = "05hpnhihwm9sxlq1qn993g03pwkmpjbn0dvnba71r1gfjv0jp2w5";
   };
 
@@ -31,8 +31,8 @@ in stdenv.mkDerivation rec {
 
   meta = {
     description = "Default typeface used in the user interface of GNOME since version 3.0";
-    platforms = stdenv.lib.platforms.all;
-    license = stdenv.lib.licenses.ofl;
-    maintainers = with stdenv.lib.maintainers; [ ];
+    platforms = lib.platforms.all;
+    license = lib.licenses.ofl;
+    maintainers = with lib.maintainers; [ ];
   };
 }
diff --git a/pkgs/data/fonts/dejavu-fonts/default.nix b/pkgs/data/fonts/dejavu-fonts/default.nix
index 839cb80a6b99..aed90b103b4e 100644
--- a/pkgs/data/fonts/dejavu-fonts/default.nix
+++ b/pkgs/data/fonts/dejavu-fonts/default.nix
@@ -1,4 +1,4 @@
-{ fetchFromGitHub, stdenv, fontforge, perl, perlPackages }:
+{ fetchFromGitHub, lib, stdenv, fontforge, perl, perlPackages }:
 
 let
   version = "2.37";
@@ -18,9 +18,9 @@ let
     # Copyright (c) 2006 by Tavmjong Bah. All Rights Reserved.
     # DejaVu changes are in public domain
     # See http://dejavu-fonts.org/wiki/License for details
-    license = stdenv.lib.licenses.free;
+    license = lib.licenses.free;
 
-    platforms = stdenv.lib.platforms.all;
+    platforms = lib.platforms.all;
   };
 
   full-ttf = stdenv.mkDerivation {
@@ -31,7 +31,7 @@ let
     src = fetchFromGitHub {
       owner = "dejavu-fonts";
       repo = "dejavu-fonts";
-      rev = "version_${stdenv.lib.replaceStrings ["."] ["_"] version}";
+      rev = "version_${lib.replaceStrings ["."] ["_"] version}";
       sha256 = "1xknlg2h287dx34v2n5r33bpcl4biqf0cv7nak657rjki7s0k4bk";
     };
 
diff --git a/pkgs/data/fonts/fixedsys-excelsior/default.nix b/pkgs/data/fonts/fixedsys-excelsior/default.nix
index 4222b802d55c..e55ae0bcf11b 100644
--- a/pkgs/data/fonts/fixedsys-excelsior/default.nix
+++ b/pkgs/data/fonts/fixedsys-excelsior/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl } :
+{ lib, stdenv, fetchurl } :
 
 let
   major = "3";
@@ -23,8 +23,8 @@ in fetchurl rec {
   meta = {
     description = "Pan-unicode version of Fixedsys, a classic DOS font";
     homepage = "http://www.fixedsysexcelsior.com/";
-    platforms = stdenv.lib.platforms.all;
-    license = stdenv.lib.licenses.publicDomain;
-    maintainers = [ stdenv.lib.maintainers.ninjatrappeur ];
+    platforms = lib.platforms.all;
+    license = lib.licenses.publicDomain;
+    maintainers = [ lib.maintainers.ninjatrappeur ];
   };
 }
diff --git a/pkgs/data/fonts/go-font/default.nix b/pkgs/data/fonts/go-font/default.nix
index b2225f5b49bf..056cd621394f 100644
--- a/pkgs/data/fonts/go-font/default.nix
+++ b/pkgs/data/fonts/go-font/default.nix
@@ -22,7 +22,7 @@ in (fetchgit {
     description = "The Go font family";
     license = licenses.bsd3;
     maintainers = with maintainers; [ sternenseemann ];
-    platforms = stdenv.lib.platforms.all;
+    platforms = lib.platforms.all;
     hydraPlatforms = [];
   };
 }
diff --git a/pkgs/data/fonts/kochi-substitute/default.nix b/pkgs/data/fonts/kochi-substitute/default.nix
index cf89a8fcb8f1..071db9b13dfb 100644
--- a/pkgs/data/fonts/kochi-substitute/default.nix
+++ b/pkgs/data/fonts/kochi-substitute/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, dpkg }:
+{ lib, stdenv, fetchurl, dpkg }:
 
 let version = "20030809";
 in
@@ -42,7 +42,7 @@ stdenv.mkDerivation {
       from the naga10 font.
     '';
     homepage = "https://osdn.net/projects/efont/";
-    license = stdenv.lib.licenses.wadalab;
-    maintainers = [ stdenv.lib.maintainers.auntie ];
+    license = lib.licenses.wadalab;
+    maintainers = [ lib.maintainers.auntie ];
   };
 }
diff --git a/pkgs/data/fonts/league-of-moveable-type/default.nix b/pkgs/data/fonts/league-of-moveable-type/default.nix
index 9a80b9a43df8..f6855dc99d66 100644
--- a/pkgs/data/fonts/league-of-moveable-type/default.nix
+++ b/pkgs/data/fonts/league-of-moveable-type/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl, unzip, raleway}:
+{lib, stdenv, fetchurl, unzip, raleway}:
 
 let
 
@@ -43,9 +43,9 @@ stdenv.mkDerivation rec {
 
     homepage = "https://www.theleagueofmoveabletype.com/";
 
-    license = stdenv.lib.licenses.ofl;
+    license = lib.licenses.ofl;
 
-    platforms = stdenv.lib.platforms.all;
-    maintainers = with stdenv.lib.maintainers; [ bergey Profpatsch ];
+    platforms = lib.platforms.all;
+    maintainers = with lib.maintainers; [ bergey Profpatsch ];
   };
 }
diff --git a/pkgs/data/fonts/meslo-lg/default.nix b/pkgs/data/fonts/meslo-lg/default.nix
index 2837e488389b..7083b9e00313 100644
--- a/pkgs/data/fonts/meslo-lg/default.nix
+++ b/pkgs/data/fonts/meslo-lg/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, unzip }:
+{ lib, stdenv, fetchurl, unzip }:
 
 stdenv.mkDerivation rec {
   version = "1.2.1";
@@ -39,8 +39,8 @@ stdenv.mkDerivation rec {
   meta = {
     description = "A customized version of Apple’s Menlo-Regular font";
     homepage = "https://github.com/andreberg/Meslo-Font/";
-    license = stdenv.lib.licenses.asl20;
-    maintainers = with stdenv.lib.maintainers; [ balajisivaraman ];
-    platforms = with stdenv.lib.platforms; all;
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [ balajisivaraman ];
+    platforms = with lib.platforms; all;
   };
 }
diff --git a/pkgs/data/fonts/nafees/default.nix b/pkgs/data/fonts/nafees/default.nix
index 11e1ccb56451..e23528aefe80 100644
--- a/pkgs/data/fonts/nafees/default.nix
+++ b/pkgs/data/fonts/nafees/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl, unzip}:
+{lib, stdenv, fetchurl, unzip}:
 
 stdenv.mkDerivation {
   name = "nafees";
@@ -56,7 +56,7 @@ stdenv.mkDerivation {
     # more like a modified BSD, but still contains the GPLv2 embedded
     # font exception, and some not-for-resale language.
     license = "unknown";
-    platforms = stdenv.lib.platforms.all;
-    maintainers = with stdenv.lib.maintainers; [ bergey ];
+    platforms = lib.platforms.all;
+    maintainers = with lib.maintainers; [ bergey ];
   };
 }
diff --git a/pkgs/data/fonts/navilu/default.nix b/pkgs/data/fonts/navilu/default.nix
index 0433ad22de53..afd9f85741c3 100644
--- a/pkgs/data/fonts/navilu/default.nix
+++ b/pkgs/data/fonts/navilu/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, fontforge }:
+{ lib, stdenv, fetchFromGitHub, fontforge }:
 
 stdenv.mkDerivation rec {
   pname = "navilu-font";
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   installPhase = "install -Dm444 -t $out/share/fonts/truetype/ Navilu.ttf";
 
-  meta = with stdenv.lib; src.meta // {
+  meta = with lib; src.meta // {
     description = "A Kannada handwriting font";
     license = licenses.gpl3Plus;
     platforms = platforms.all;
diff --git a/pkgs/data/fonts/poly/default.nix b/pkgs/data/fonts/poly/default.nix
index 05b411a5ba30..50dfb5020354 100644
--- a/pkgs/data/fonts/poly/default.nix
+++ b/pkgs/data/fonts/poly/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, unzip }:
+{ lib, stdenv, fetchurl, unzip }:
 
 stdenv.mkDerivation rec {
   name = "poly";
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
       and languages that use the Latin script and its variants.
     '';
     homepage = "http://www.fontsquirrel.com/fonts/poly";
-    license = stdenv.lib.licenses.ofl;
-    maintainers = with stdenv.lib.maintainers; [ relrod ];
+    license = lib.licenses.ofl;
+    maintainers = with lib.maintainers; [ relrod ];
   };
 }
diff --git a/pkgs/data/fonts/tempora-lgc/default.nix b/pkgs/data/fonts/tempora-lgc/default.nix
index d20acad663c1..c7be70f800de 100644
--- a/pkgs/data/fonts/tempora-lgc/default.nix
+++ b/pkgs/data/fonts/tempora-lgc/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl}:
+{lib, stdenv, fetchurl}:
 let
   srcs = [
     (fetchurl {
@@ -36,7 +36,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = ''Tempora font'';
-    license = stdenv.lib.licenses.gpl2 ;
-    maintainers = [stdenv.lib.maintainers.raskin];
+    license = lib.licenses.gpl2 ;
+    maintainers = [lib.maintainers.raskin];
   };
 }
diff --git a/pkgs/data/fonts/tex-gyre-math/default.nix b/pkgs/data/fonts/tex-gyre-math/default.nix
index 92898be0f3ff..95038d3f9cfe 100644
--- a/pkgs/data/fonts/tex-gyre-math/default.nix
+++ b/pkgs/data/fonts/tex-gyre-math/default.nix
@@ -64,4 +64,4 @@ let
       };
     };
 in
-  stdenv.lib.mapAttrs mkVariant variants
+  lib.mapAttrs mkVariant variants
diff --git a/pkgs/data/fonts/tex-gyre/default.nix b/pkgs/data/fonts/tex-gyre/default.nix
index 333da24e95f3..6ce5bd207862 100644
--- a/pkgs/data/fonts/tex-gyre/default.nix
+++ b/pkgs/data/fonts/tex-gyre/default.nix
@@ -32,7 +32,7 @@ let
       platforms = platforms.all;
     };
   };
-in stdenv.lib.mapAttrs mkVariant {
+in lib.mapAttrs mkVariant {
   adventor = {
     version = "2_501";
     sha256 = "0qjg3x0adfppyx3x33cm07ww9i9sl88xaq07m7wfip8rmyp567fn";
diff --git a/pkgs/data/fonts/ttf-bitstream-vera/default.nix b/pkgs/data/fonts/ttf-bitstream-vera/default.nix
index f485f43b60c6..bcf6cefb8d67 100644
--- a/pkgs/data/fonts/ttf-bitstream-vera/default.nix
+++ b/pkgs/data/fonts/ttf-bitstream-vera/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchzip }:
+{ lib, stdenv, fetchzip }:
 let
   pname = "ttf-bitstream-vera";
   version = "1.10";
@@ -6,7 +6,7 @@ in
 fetchzip rec {
   name = "${pname}-${version}";
 
-  url = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${name}.tar.bz2";
+  url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${name}.tar.bz2";
 
   postFetch = ''
     tar -xjf $downloadedFile --strip-components=1
diff --git a/pkgs/data/fonts/twitter-color-emoji/default.nix b/pkgs/data/fonts/twitter-color-emoji/default.nix
index de70a0b6c6a0..f86c47994929 100644
--- a/pkgs/data/fonts/twitter-color-emoji/default.nix
+++ b/pkgs/data/fonts/twitter-color-emoji/default.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
   ];
 
   postPatch = let
-    templateSubstitutions = stdenv.lib.concatStringsSep "; " [
+    templateSubstitutions = lib.concatStringsSep "; " [
       ''s#Noto Color Emoji#Twitter Color Emoji#''
       ''s#NotoColorEmoji#TwitterColorEmoji#''
       ''s#Copyright .* Google Inc\.#Twitter, Inc and other contributors.#''
diff --git a/pkgs/data/fonts/uni-vga/default.nix b/pkgs/data/fonts/uni-vga/default.nix
index 65db46ca2ca7..56ba36b1eb41 100644
--- a/pkgs/data/fonts/uni-vga/default.nix
+++ b/pkgs/data/fonts/uni-vga/default.nix
@@ -1,8 +1,8 @@
-{ stdenv, fetchurl, perl, kbd, bdftopcf
+{ lib, stdenv, fetchurl, perl, kbd, bdftopcf
 , libfaketime, fonttosfnt, mkfontscale
 }:
 
-with stdenv.lib;
+with lib;
 
 stdenv.mkDerivation {
   name = "uni-vga";
diff --git a/pkgs/data/fonts/unscii/default.nix b/pkgs/data/fonts/unscii/default.nix
index 724d015a7c31..5aaa68f9796f 100644
--- a/pkgs/data/fonts/unscii/default.nix
+++ b/pkgs/data/fonts/unscii/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, perl, bdftopcf
+{ lib, stdenv, fetchurl, perl, bdftopcf
 , fontforge, SDL, SDL_image, mkfontscale
 }:
 
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     # Basically GPL2+ with font exception — because of the Unifont-augmented
     # version. The reduced version is public domain.
     license = "http://unifoundry.com/LICENSE.txt";
-    maintainers = [ stdenv.lib.maintainers.raskin ];
+    maintainers = [ lib.maintainers.raskin ];
     homepage = "http://pelulamu.net/unscii/";
   };
 }
diff --git a/pkgs/data/fonts/vista-fonts/default.nix b/pkgs/data/fonts/vista-fonts/default.nix
index 3a5ee616a0ef..b71ef7c99ec8 100644
--- a/pkgs/data/fonts/vista-fonts/default.nix
+++ b/pkgs/data/fonts/vista-fonts/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchzip, cabextract }:
+{ lib, stdenv, fetchzip, cabextract }:
 
 fetchzip {
   name = "vista-fonts-1";
@@ -26,7 +26,7 @@ fetchzip {
   meta = {
     description = "Some TrueType fonts from Microsoft Windows Vista (Calibri, Cambria, Candara, Consolas, Constantia, Corbel)";
     homepage = "http://www.microsoft.com/typography/ClearTypeFonts.mspx";
-    license = stdenv.lib.licenses.unfree; # haven't read the EULA, but we probably can't redistribute these files, so...
+    license = lib.licenses.unfree; # haven't read the EULA, but we probably can't redistribute these files, so...
 
     # Set a non-zero priority to allow easy overriding of the
     # fontconfig configuration files.
diff --git a/pkgs/data/icons/gnome-icon-theme/default.nix b/pkgs/data/icons/gnome-icon-theme/default.nix
index 9879f8da342d..b9a4fd48fb67 100644
--- a/pkgs/data/icons/gnome-icon-theme/default.nix
+++ b/pkgs/data/icons/gnome-icon-theme/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation rec {
   version = "3.12.0";
 
   src = fetchurl {
-    url = "mirror://gnome/sources/gnome-icon-theme/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
+    url = "mirror://gnome/sources/gnome-icon-theme/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
     sha256 = "0fjh9qmmgj34zlgxb09231ld7khys562qxbpsjlaplq2j85p57im";
   };
 
diff --git a/pkgs/data/icons/tango-icon-theme/default.nix b/pkgs/data/icons/tango-icon-theme/default.nix
index f1b59c2f5386..b69bf4d46f53 100644
--- a/pkgs/data/icons/tango-icon-theme/default.nix
+++ b/pkgs/data/icons/tango-icon-theme/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, intltool, pkgconfig, iconnamingutils, imagemagick, librsvg
+{ lib, stdenv, fetchurl, intltool, pkgconfig, iconnamingutils, imagemagick, librsvg
 , gtk/*any version*/, gnome-icon-theme, hicolor-icon-theme
 }:
 
@@ -26,6 +26,6 @@ stdenv.mkDerivation rec {
   meta = {
     description = "A basic set of icons";
     homepage = "http://tango.freedesktop.org/Tango_Icon_Library";
-    platforms = stdenv.lib.platforms.linux;
+    platforms = lib.platforms.linux;
   };
 }
diff --git a/pkgs/data/misc/cacert/default.nix b/pkgs/data/misc/cacert/default.nix
index ad8c39831736..e50aa81656a9 100644
--- a/pkgs/data/misc/cacert/default.nix
+++ b/pkgs/data/misc/cacert/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, nss, python3
+{ lib, stdenv, fetchurl, nss, python3
 , blacklist ? []
 
 # Used for tests only
@@ -7,7 +7,7 @@
 , openssl
 }:
 
-with stdenv.lib;
+with lib;
 
 let
 
diff --git a/pkgs/data/misc/ddccontrol-db/default.nix b/pkgs/data/misc/ddccontrol-db/default.nix
index 6cb0c46e5f55..38f72b5a2efe 100644
--- a/pkgs/data/misc/ddccontrol-db/default.nix
+++ b/pkgs/data/misc/ddccontrol-db/default.nix
@@ -32,6 +32,6 @@ stdenv.mkDerivation {
     homepage = "https://github.com/ddccontrol/ddccontrol-db";
     license = licenses.gpl2;
     platforms = platforms.linux;
-    maintainers = [ stdenv.lib.maintainers.pakhfn ];
+    maintainers = [ lib.maintainers.pakhfn ];
   };
 }
diff --git a/pkgs/data/misc/prjxray-db/default.nix b/pkgs/data/misc/prjxray-db/default.nix
index d498fdb1cc8b..edc3c86438f6 100644
--- a/pkgs/data/misc/prjxray-db/default.nix
+++ b/pkgs/data/misc/prjxray-db/default.nix
@@ -1,4 +1,4 @@
-{ stdenv
+{ lib, stdenv
 , fetchFromGitHub
 }:
 
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Project X-Ray - Xilinx Series 7 Bitstream Documentation";
     homepage    = "https://github.com/SymbiFlow/prjxray-db";
     license     = licenses.cc0;
diff --git a/pkgs/data/misc/scowl/default.nix b/pkgs/data/misc/scowl/default.nix
index 686582b48ce1..a4d91eeb037a 100644
--- a/pkgs/data/misc/scowl/default.nix
+++ b/pkgs/data/misc/scowl/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, unzip, zip, libiconv, perl, aspell, dos2unix
+{ lib, stdenv, fetchFromGitHub, unzip, zip, libiconv, perl, aspell, dos2unix
 , singleWordlist ? null
 }:
 
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   '';
 
   nativeBuildInputs = [ unzip zip perl aspell dos2unix ];
-  buildInputs = stdenv.lib.optional (!stdenv.isLinux) libiconv;
+  buildInputs = lib.optional (!stdenv.isLinux) libiconv;
 
   NIX_CFLAGS_COMPILE = "-Wno-narrowing";
 
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     export PERL5LIB="$PERL5LIB''${PERL5LIB:+:}$PWD/varcon"
   '';
 
-  postBuild = stdenv.lib.optionalString (singleWordlist == null) ''
+  postBuild = lib.optionalString (singleWordlist == null) ''
     (
     cd scowl/speller
     make aspell
@@ -104,9 +104,9 @@ stdenv.mkDerivation rec {
   meta = {
     inherit version;
     description = "Spell checker oriented word lists";
-    license = stdenv.lib.licenses.mit;
-    maintainers = [stdenv.lib.maintainers.raskin];
-    platforms = stdenv.lib.platforms.unix;
+    license = lib.licenses.mit;
+    maintainers = [lib.maintainers.raskin];
+    platforms = lib.platforms.unix;
     homepage = "http://wordlist.aspell.net/";
   };
 }
diff --git a/pkgs/data/misc/symbiflow-arch-defs/default.nix b/pkgs/data/misc/symbiflow-arch-defs/default.nix
index 89549da85dcb..3f6e39d85f90 100644
--- a/pkgs/data/misc/symbiflow-arch-defs/default.nix
+++ b/pkgs/data/misc/symbiflow-arch-defs/default.nix
@@ -1,4 +1,4 @@
-{ stdenv
+{ lib, stdenv
 , fetchurl
 , autoPatchelfHook
 , python3Packages
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
     done
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Project X-Ray - Xilinx Series 7 Bitstream Documentation";
     homepage    = "https://github.com/SymbiFlow/symbiflow-arch-defs";
     hydraPlatforms = [];
diff --git a/pkgs/data/misc/xorg-rgb/default.nix b/pkgs/data/misc/xorg-rgb/default.nix
index e976fe1358d2..c74c4b826ed0 100644
--- a/pkgs/data/misc/xorg-rgb/default.nix
+++ b/pkgs/data/misc/xorg-rgb/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl, pkgconfig, xorgproto}:
+{lib, stdenv, fetchurl, pkgconfig, xorgproto}:
 stdenv.mkDerivation rec {
   pname = "rgb";
   version = "1.0.6";
@@ -13,9 +13,9 @@ stdenv.mkDerivation rec {
   meta = {
     inherit version;
     description = "X11 colorname to RGB mapping database";
-    license = stdenv.lib.licenses.mit;
-    maintainers = [stdenv.lib.maintainers.raskin];
-    platforms = stdenv.lib.platforms.linux;
+    license = lib.licenses.mit;
+    maintainers = [lib.maintainers.raskin];
+    platforms = lib.platforms.linux;
     homepage = "http://xorg.freedesktop.org/";
   };
 }
diff --git a/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/3.1.nix b/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/3.1.nix
index 0faad5b594f6..b1db3638682b 100644
--- a/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/3.1.nix
+++ b/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/3.1.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, unzip }:
+{ lib, stdenv, fetchurl, unzip }:
 
 let
 
@@ -32,6 +32,6 @@ stdenv.mkDerivation {
     '';
 
   meta = {
-    platforms = stdenv.lib.platforms.unix;
+    platforms = lib.platforms.unix;
   };
 }
diff --git a/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/4.1.nix b/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/4.1.nix
index 4b0ced9daaea..85d7ab167964 100644
--- a/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/4.1.nix
+++ b/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/4.1.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, unzip }:
+{ lib, stdenv, fetchurl, unzip }:
 
 let
 
@@ -32,6 +32,6 @@ stdenv.mkDerivation {
     '';
 
   meta = {
-    platforms = stdenv.lib.platforms.unix;
+    platforms = lib.platforms.unix;
   };
 }
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
index a3b7067b2a42..1c6e57b3e7a7 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl}:
+{lib, stdenv, fetchurl}:
 
 stdenv.mkDerivation {
   name = "docbook-xml-ebnf-1.2b1";
@@ -20,6 +20,6 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    platforms = stdenv.lib.platforms.unix;
+    platforms = lib.platforms.unix;
   };
 }
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.1.2.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.1.2.nix
index de126da9f909..8a10defa0fb5 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.1.2.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.1.2.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl, unzip, findXMLCatalogs}:
+{lib, stdenv, fetchurl, unzip, findXMLCatalogs}:
 
 let
 
@@ -12,7 +12,7 @@ let
 in
 
 import ./generic.nix {
-  inherit stdenv unzip findXMLCatalogs;
+  inherit lib stdenv unzip findXMLCatalogs;
   name = "docbook-xml-4.1.2";
   src = fetchurl {
     url = "http://www.docbook.org/xml/4.1.2/docbkx412.zip";
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.2.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.2.nix
index f894db24827e..9a9abc0588bd 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.2.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.2.nix
@@ -1,7 +1,7 @@
-{stdenv, fetchurl, unzip, findXMLCatalogs}:
+{lib, stdenv, fetchurl, unzip, findXMLCatalogs}:
 
 import ./generic.nix {
-  inherit stdenv unzip findXMLCatalogs;
+  inherit lib stdenv unzip findXMLCatalogs;
   name = "docbook-xml-4.2";
   src = fetchurl {
     url = "http://www.docbook.org/xml/4.2/docbook-xml-4.2.zip";
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.3.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.3.nix
index dc2ec36ccef7..4d821ce2ffb8 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.3.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.3.nix
@@ -1,7 +1,7 @@
-{stdenv, fetchurl, unzip, findXMLCatalogs}:
+{lib, stdenv, fetchurl, unzip, findXMLCatalogs}:
 
 import ./generic.nix {
-  inherit stdenv unzip findXMLCatalogs;
+  inherit lib stdenv unzip findXMLCatalogs;
   name = "docbook-xml-4.3";
   src = fetchurl {
     url = "http://www.docbook.org/xml/4.3/docbook-xml-4.3.zip";
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.4.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.4.nix
index 93b03d854572..ca847d3e436e 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.4.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.4.nix
@@ -1,7 +1,7 @@
-{stdenv, fetchurl, unzip, findXMLCatalogs}:
+{lib, stdenv, fetchurl, unzip, findXMLCatalogs}:
 
 import ./generic.nix {
-  inherit stdenv unzip findXMLCatalogs;
+  inherit lib stdenv unzip findXMLCatalogs;
   name = "docbook-xml-4.4";
   src = fetchurl {
     url = "http://www.docbook.org/xml/4.4/docbook-xml-4.4.zip";
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.5.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.5.nix
index 5bdb63e69da2..7be810fe3071 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.5.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/4.5.nix
@@ -1,7 +1,7 @@
-{stdenv, fetchurl, unzip, findXMLCatalogs}:
+{lib, stdenv, fetchurl, unzip, findXMLCatalogs}:
 
 import ./generic.nix {
-  inherit stdenv unzip findXMLCatalogs;
+  inherit lib stdenv unzip findXMLCatalogs;
   name = "docbook-xml-4.5";
   src = fetchurl {
     url = "http://www.docbook.org/xml/4.5/docbook-xml-4.5.zip";
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/generic.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/generic.nix
index 41c4b73d3f62..3d6edd300ec3 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/generic.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook/generic.nix
@@ -1,4 +1,4 @@
-{ stdenv, unzip, src, name, postInstall ? "true", meta ? {}, findXMLCatalogs }:
+{ lib, stdenv, unzip, src, name, postInstall ? "true", meta ? {}, findXMLCatalogs }:
 
 stdenv.mkDerivation {
   inherit src name postInstall;
@@ -18,6 +18,6 @@ stdenv.mkDerivation {
   '';
 
   meta = meta // {
-    platforms = stdenv.lib.platforms.unix;
+    platforms = lib.platforms.unix;
   };
 }
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/xhtml1/default.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/xhtml1/default.nix
index 383a8750f1f8..a000c4249067 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/xhtml1/default.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/xhtml1/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, libxml2 }:
+{ lib, stdenv, fetchurl, libxml2 }:
 
 stdenv.mkDerivation {
   name = "xhtml1-20020801";
@@ -27,6 +27,6 @@ stdenv.mkDerivation {
   meta = {
     homepage = "http://www.w3.org/TR/xhtml1/";
     description = "DTDs for XHTML 1.0, the Extensible HyperText Markup Language";
-    platforms = stdenv.lib.platforms.unix;
+    platforms = lib.platforms.unix;
   };
 }
diff --git a/pkgs/data/themes/adapta-kde/default.nix b/pkgs/data/themes/adapta-kde/default.nix
index fed16da929c2..4feeeaa6c002 100644
--- a/pkgs/data/themes/adapta-kde/default.nix
+++ b/pkgs/data/themes/adapta-kde/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub }:
+{ lib, stdenv, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
   pname = "adapta-kde-theme";
@@ -21,8 +21,8 @@ stdenv.mkDerivation rec {
   meta = {
     description = "A port of the Adapta theme for Plasma";
     homepage = "https://git.io/adapta-kde";
-    license = stdenv.lib.licenses.gpl3;
-    maintainers = [ stdenv.lib.maintainers.tadfisher ];
-    platforms = stdenv.lib.platforms.all;
+    license = lib.licenses.gpl3;
+    maintainers = [ lib.maintainers.tadfisher ];
+    platforms = lib.platforms.all;
   };
 }
diff --git a/pkgs/data/themes/albatross/default.nix b/pkgs/data/themes/albatross/default.nix
index 1baa977d101c..b53dd553ca2d 100644
--- a/pkgs/data/themes/albatross/default.nix
+++ b/pkgs/data/themes/albatross/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub }:
+{ lib, stdenv, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
   pname = "Albatross";
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   meta = {
     description = "A desktop Suite for Xfce";
     homepage = "https://github.com/shimmerproject/Albatross";
-    license = stdenv.lib.licenses.gpl2;
-    platforms = stdenv.lib.platforms.unix;
+    license = lib.licenses.gpl2;
+    platforms = lib.platforms.unix;
   };
 }
diff --git a/pkgs/data/themes/arc-kde/default.nix b/pkgs/data/themes/arc-kde/default.nix
index c0db85105d56..ecf798364ff3 100644
--- a/pkgs/data/themes/arc-kde/default.nix
+++ b/pkgs/data/themes/arc-kde/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub }:
+{ lib, stdenv, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
   pname = "arc-kde-theme";
@@ -21,8 +21,8 @@ stdenv.mkDerivation rec {
   meta = {
     description = "A port of the arc theme for Plasma";
     homepage = "https://git.io/arc-kde";
-    license = stdenv.lib.licenses.gpl3;
-    maintainers = [ stdenv.lib.maintainers.nixy ];
-    platforms = stdenv.lib.platforms.all;
+    license = lib.licenses.gpl3;
+    maintainers = [ lib.maintainers.nixy ];
+    platforms = lib.platforms.all;
   };
 }
diff --git a/pkgs/data/themes/blackbird/default.nix b/pkgs/data/themes/blackbird/default.nix
index f4a2fbb7bbe6..a3f481b6d4ee 100644
--- a/pkgs/data/themes/blackbird/default.nix
+++ b/pkgs/data/themes/blackbird/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, autoreconfHook, gtk-engine-murrine }:
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, gtk-engine-murrine }:
 
 stdenv.mkDerivation rec {
   pname = "Blackbird";
@@ -18,8 +18,8 @@ stdenv.mkDerivation rec {
   meta = {
     description = "Dark Desktop Suite for Gtk, Xfce and Metacity";
     homepage = "https://github.com/shimmerproject/Blackbird";
-    license = with stdenv.lib.licenses; [ gpl2Plus cc-by-nc-sa-30 ];
-    platforms = stdenv.lib.platforms.linux;
-    maintainers = [ stdenv.lib.maintainers.romildo ];
+    license = with lib.licenses; [ gpl2Plus cc-by-nc-sa-30 ];
+    platforms = lib.platforms.linux;
+    maintainers = [ lib.maintainers.romildo ];
   };
 }
diff --git a/pkgs/data/themes/e17gtk/default.nix b/pkgs/data/themes/e17gtk/default.nix
index c666cc5d0aa1..b6cc44aa0d54 100644
--- a/pkgs/data/themes/e17gtk/default.nix
+++ b/pkgs/data/themes/e17gtk/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub }:
+{ lib, stdenv, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
   pname = "e17gtk";
@@ -20,8 +20,8 @@ stdenv.mkDerivation rec {
   meta = {
     description = "An Enlightenment-like GTK theme with sharp corners";
     homepage = "https://github.com/tsujan/E17gtk";
-    license = stdenv.lib.licenses.gpl3;
-    platforms = stdenv.lib.platforms.unix;
-    maintainers = [ stdenv.lib.maintainers.romildo ];
+    license = lib.licenses.gpl3;
+    platforms = lib.platforms.unix;
+    maintainers = [ lib.maintainers.romildo ];
   };
 }
diff --git a/pkgs/data/themes/equilux-theme/default.nix b/pkgs/data/themes/equilux-theme/default.nix
index ddc57c552a12..162b87885089 100644
--- a/pkgs/data/themes/equilux-theme/default.nix
+++ b/pkgs/data/themes/equilux-theme/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     patchShebangs install.sh
     sed -i install.sh \
       -e "s|if .*which gnome-shell.*;|if true;|" \
-      -e "s|CURRENT_GS_VERSION=.*$|CURRENT_GS_VERSION=${stdenv.lib.versions.majorMinor gnome3.gnome-shell.version}|"
+      -e "s|CURRENT_GS_VERSION=.*$|CURRENT_GS_VERSION=${lib.versions.majorMinor gnome3.gnome-shell.version}|"
     mkdir -p $out/share/themes
     ./install.sh --dest $out/share/themes
     rm $out/share/themes/*/COPYING
diff --git a/pkgs/data/themes/gnome-breeze/default.nix b/pkgs/data/themes/gnome-breeze/default.nix
index 25d6d60d6526..09f9ecd197a8 100644
--- a/pkgs/data/themes/gnome-breeze/default.nix
+++ b/pkgs/data/themes/gnome-breeze/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit }:
+{ lib, stdenv, fetchgit }:
 
 stdenv.mkDerivation {
   name = "gnome-breeze-20160526";
@@ -17,9 +17,9 @@ stdenv.mkDerivation {
   meta = {
     description = "A GTK theme built to match KDE's breeze theme";
     homepage = "https://github.com/dirruk1/gnome-breeze";
-    license = stdenv.lib.licenses.lgpl2;
-    maintainers = with stdenv.lib.maintainers; [ bennofs ];
-    platforms = stdenv.lib.platforms.all;
+    license = lib.licenses.lgpl2;
+    maintainers = with lib.maintainers; [ bennofs ];
+    platforms = lib.platforms.all;
     hydraPlatforms = [];
   };
 }
diff --git a/pkgs/data/themes/lounge/default.nix b/pkgs/data/themes/lounge/default.nix
index af355c168e42..0c51b78333dc 100644
--- a/pkgs/data/themes/lounge/default.nix
+++ b/pkgs/data/themes/lounge/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   propagatedUserEnvPkgs = [ gtk-engine-murrine ];
 
   mesonFlags = [
-    "-D gnome_version=${stdenv.lib.versions.majorMinor gnome3.gnome-shell.version}"
+    "-D gnome_version=${lib.versions.majorMinor gnome3.gnome-shell.version}"
   ];
 
   postFixup = ''
diff --git a/pkgs/data/themes/materia-theme/default.nix b/pkgs/data/themes/materia-theme/default.nix
index a7351a30ba82..d34ece5c94f7 100644
--- a/pkgs/data/themes/materia-theme/default.nix
+++ b/pkgs/data/themes/materia-theme/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
   dontBuild = true;
 
   mesonFlags = [
-    "-Dgnome_shell_version=${stdenv.lib.versions.majorMinor gnome3.gnome-shell.version}"
+    "-Dgnome_shell_version=${lib.versions.majorMinor gnome3.gnome-shell.version}"
   ];
 
   postInstall = ''
diff --git a/pkgs/data/themes/numix-sx/default.nix b/pkgs/data/themes/numix-sx/default.nix
index 7c8cf77dfc40..ee887cbadee1 100644
--- a/pkgs/data/themes/numix-sx/default.nix
+++ b/pkgs/data/themes/numix-sx/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, gtk-engine-murrine }:
+{ lib, stdenv, fetchurl, gtk-engine-murrine }:
 
 stdenv.mkDerivation {
   version = "2017-04-24";
@@ -23,8 +23,8 @@ stdenv.mkDerivation {
   meta = {
     description = "Gray variation of Numix theme";
     homepage = "https://www.gnome-look.org/p/1117412/";
-    license = stdenv.lib.licenses.gpl3Plus;
-    platforms = stdenv.lib.platforms.all;
-    maintainers = [ stdenv.lib.maintainers.sauyon ];
+    license = lib.licenses.gpl3Plus;
+    platforms = lib.platforms.all;
+    maintainers = [ lib.maintainers.sauyon ];
   };
 }
diff --git a/pkgs/data/themes/numix/default.nix b/pkgs/data/themes/numix/default.nix
index 879a13561533..23f491d4a9ad 100644
--- a/pkgs/data/themes/numix/default.nix
+++ b/pkgs/data/themes/numix/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, sass, glib, libxml2, gdk-pixbuf
+{ lib, stdenv, fetchFromGitHub, sass, glib, libxml2, gdk-pixbuf
 , gtk-engine-murrine
 }:
 
@@ -25,8 +25,8 @@ stdenv.mkDerivation rec {
   meta = {
     description = "Modern flat theme with a combination of light and dark elements (GNOME, Unity, Xfce and Openbox)";
     homepage = "https://numixproject.github.io";
-    license = stdenv.lib.licenses.gpl3Plus;
-    platforms = stdenv.lib.platforms.all;
-    maintainers = [ stdenv.lib.maintainers.romildo ];
+    license = lib.licenses.gpl3Plus;
+    platforms = lib.platforms.all;
+    maintainers = [ lib.maintainers.romildo ];
   };
 }
diff --git a/pkgs/data/themes/openzone/default.nix b/pkgs/data/themes/openzone/default.nix
index cce23bd76ea0..e7748612fef3 100644
--- a/pkgs/data/themes/openzone/default.nix
+++ b/pkgs/data/themes/openzone/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, icon-slicer, xcursorgen }:
+{ lib, stdenv, fetchFromGitHub, icon-slicer, xcursorgen }:
 stdenv.mkDerivation rec {
   pname = "openzone-cursors";
   version = "1.2.9";
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [ "DESTDIR=$(out)" ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Clean and sharp X11/Wayland cursor theme";
     homepage = "https://www.gnome-look.org/p/999999/";
     license = licenses.mit;
diff --git a/pkgs/data/themes/orion/default.nix b/pkgs/data/themes/orion/default.nix
index 740b34889227..93ea3633fb5a 100644
--- a/pkgs/data/themes/orion/default.nix
+++ b/pkgs/data/themes/orion/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, gtk-engine-murrine }:
+{ lib, stdenv, fetchFromGitHub, gtk-engine-murrine }:
 
 stdenv.mkDerivation rec {
   pname = "orion";
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     homepage = "https://github.com/shimmerproject/Orion";
-    license = stdenv.lib.licenses.gpl3Plus;
-    platforms = stdenv.lib.platforms.linux;
+    license = lib.licenses.gpl3Plus;
+    platforms = lib.platforms.linux;
   };
 }
diff --git a/pkgs/data/themes/plata/default.nix b/pkgs/data/themes/plata/default.nix
index 6153c3607c92..5c7de90b295e 100644
--- a/pkgs/data/themes/plata/default.nix
+++ b/pkgs/data/themes/plata/default.nix
@@ -39,8 +39,8 @@ stdenv.mkDerivation rec {
     libxml2
     glib.dev
   ]
-  ++ stdenv.lib.optionals mateSupport [ gtk3 marco ]
-  ++ stdenv.lib.optional telegramSupport zip;
+  ++ lib.optionals mateSupport [ gtk3 marco ]
+  ++ lib.optional telegramSupport zip;
 
   buildInputs = [
     gdk-pixbuf
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
 
   configureFlags =
     let
-      inherit (stdenv.lib) enableFeature optional;
+      inherit (lib) enableFeature optional;
       withOptional = value: feat: optional (value != null) "--with-${feat}=${value}";
     in [
       "--enable-parallel"