pkgs/development/libraries: stdenv.lib -> lib

pkgs/development/libraries/SDL2_mixer/default.nix

@@ -1,4 +1,4 @@
-{ stdenv
+{ lib, stdenv
 , fetchurl
 , pkg-config
 , AudioToolbox
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = stdenv.lib.optionals stdenv.isDarwin [
+  buildInputs = lib.optionals stdenv.isDarwin [
     AudioToolbox
     AudioUnit
     CoreServices
@@ -51,12 +51,12 @@ stdenv.mkDerivation rec {
     "--disable-music-mp3-mpg123-shared"
     "--disable-music-opus-shared"
     "--disable-music-midi-fluidsynth-shared"
-  ] ++ stdenv.lib.optionals stdenv.isDarwin [
+  ] ++ lib.optionals stdenv.isDarwin [
     "--disable-sdltest"
     "--disable-smpegtest"
   ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "SDL multi-channel audio mixer library";
     platforms = platforms.unix;
     homepage = "https://www.libsdl.org/projects/SDL_mixer/";