anchor.diff:      name = "poppler-qt4-${version}";
       version = "0.18.1";
       disabled = isPy3k || isPyPy;
  -    
  +
       src = pkgs.fetchurl {
         url = "https://pypi.python.org/packages/source/p/python-poppler-qt4/" +
               "python-poppler-qt4-${version}.tar.gz";
  
positive.code:       maintainers = [ stdenv.lib.maintainers.DamienCassou ];
      };
    };
  }); in pythonPackages
  
negative.code: 
      buildInputs = with self; [ nose mock ];
      propagatedBuildInputs = with self; [
        jinja2 pyyaml redis requests pagerduty
        python_simple_hipchat pushbullet
      ];
  
  