pkgs/tools: stdenv.lib -> lib

pkgs/tools/graphics/pngout/default.nix

@@ -1,4 +1,4 @@
-{stdenv, fetchurl}:
+{lib, stdenv, fetchurl}:
 
 let
   folder = if stdenv.hostPlatform.system == "i686-linux" then "i686"
@@ -16,7 +16,7 @@ stdenv.mkDerivation {
   installPhase = ''
     mkdir -p $out/bin
     cp ${folder}/pngout $out/bin
-    
+
     ${if stdenv.hostPlatform.system == "i686-linux" then ''
         patchelf --set-interpreter ${stdenv.glibc.out}/lib/ld-linux.so.2 $out/bin/pngout
       '' else if stdenv.hostPlatform.system == "x86_64-linux" then ''
@@ -26,8 +26,8 @@ stdenv.mkDerivation {
 
   meta = {
     description = "A tool that aggressively optimizes the sizes of PNG images";
-    license = stdenv.lib.licenses.unfree;
+    license = lib.licenses.unfree;
     homepage = "http://advsys.net/ken/utils.htm";
-    maintainers = [ stdenv.lib.maintainers.sander ];
+    maintainers = [ lib.maintainers.sander ];
   };
 }