pkgs/tools: stdenv.lib -> lib

pkgs/tools/graphics/mscgen/default.nix

@@ -1,4 +1,4 @@
-{ stdenv
+{ lib, stdenv
 , bison
 , fetchurl
 , flex
@@ -36,7 +36,7 @@ stdenv.mkDerivation {
   meta = {
     homepage = "http://www.mcternan.me.uk/mscgen/";
     description = "Convert Message Sequence Chart descriptions into PNG, SVG, or EPS images";
-    license = stdenv.lib.licenses.gpl2;
+    license = lib.licenses.gpl2;
 
     longDescription = ''
       Mscgen is a small program that parses Message Sequence Chart
@@ -51,7 +51,7 @@ stdenv.mkDerivation {
       printing.
     '';
 
-    platforms = stdenv.lib.platforms.unix;
-    maintainers = [ stdenv.lib.maintainers.peti ];
+    platforms = lib.platforms.unix;
+    maintainers = [ lib.maintainers.peti ];
   };
 }