anchor.diff:  
     wxPython28 = import ../development/python-modules/wxPython/2.8.nix {
       inherit fetchurl stdenv pkgconfig python;
  -    wxGTK = wxGTK28;
  +    inherit wxGTK;
     };
   
     twisted = pythonPackages.twisted;
  
positive.code:   };
  
    xara = import ../applications/graphics/xara {
      inherit fetchurl stdenv autoconf automake libtool gettext cvs wxGTK
        pkgconfig libxml2 zip libpng libjpeg shebangfix perl freetype;
      inherit (gtkLibs) gtk;
    };
  
negative.code:     inherit fetchurl stdenv gettext pkgconfig zlib perl intltool libogg
        libvorbis libmad;
      inherit (gtkLibs) gtk glib;
      inherit wxGTK;
    };
  
    aumix = import ../applications/audio/aumix {
  