anchor.diff:    preConfigure = ''
       makeFlags="$makeFlags PREFIX=$out"
       makeFlags="$makeFlags PYINSTALL_EXTRA=--prefix=$out"
  -    mkdir -p $out/lib/python3.4/site-packages/
  -    export PYTHONPATH=$PYTHONPATH:$out/lib/python3.4/site-packages/
  +    mkdir -p $out/${python3.sitePackages}/
  +    export PYTHONPATH=$PYTHONPATH:$out/${python3.sitePackages}
     '';
   
     preFixup = ''
  
positive.code: { stdenv, fetchurl, pkgconfig, python3, makeWrapper, pygtk
  , webkit, glib_networking, gsettings_desktop_schemas, pythonPackages
  }:
  
  stdenv.mkDerivation rec {
    name = "uzbl-v0.9.0";
  
negative.code: 
    nativeBuildInputs = [ pkgconfig python3 makeWrapper ];
  
    buildInputs = [ gsettings_desktop_schemas webkit ];
    propagatedBuildInputs = [ pygtk pythonPackages.six ];
  }
  