anchor.diff:      homepage = http://cairographics.org/;
   
       licenses = [ "LGPLv2+" "MPLv1" ];
  +
  +    platforms = stdenv.lib.platforms.all;
     };
   }
  
positive.code:   buildInputs =
      [ pkgconfig x11 fontconfig pixman xlibs.libXrender ]
      ++ stdenv.lib.optionals xcbSupport [ libxcb xcbutil ]
      ++ stdenv.lib.optional gobjectSupport glib;
  
    propagatedBuildInputs =
      [ freetype ] ++
  
negative.code: , gobjectSupport ? true, glib
  , stdenv, fetchurl, pkgconfig, x11, fontconfig, freetype, xlibs
  , zlib, libpng, pixman, libxcb ? null, xcbutil ? null
  , gettext
  }:
  
  assert postscriptSupport -> zlib != null;
  