anchor.diff:    #   };
     # });
   
  +  ordereddict = if isPy26 then (buildPythonPackage {
  +    name = "ordereddict-1.1";
  +    src = fetchurl {
  +      url = "http://pypi.python.org/packages/source/o/ordereddict/ordereddict-1.1.tar.gz";
  +      md5 = "a0ed854ee442051b249bfad0f638bbec";
  +    };
  +    doCheck = false;
  +  }) else null;
  +
     ply = buildPythonPackage (rec {
       name = "ply-3.2";
   
  
positive.code:       sha256 = "0bhiyx41kilvy04cgjbvjy2r4b6l7zz31fbrg3l6lvnqm26nihb0";
      };
  
      buildInputs = [ pkgs.setuptools ] ++
                    (if python.majorVersion == "2.6" then [ argparse ] else []);
  
      meta = {
        description = "automatically generated zsh completion function for Python's option parser modules";
  
negative.code:     };
    };
  
    importlib = if isPy26 then (buildPythonPackage {
      name = "importlib-1.0.2";
      src = fetchurl {
        url = "http://pypi.python.org/packages/source/i/importlib/importlib-1.0.2.tar.gz";
        md5 = "4aa23397da8bd7c7426864e88e4db7e1";
      };
      doCheck = false;
    }) else null;
  
    iptools = buildPythonPackage rec {
      version = "0.4.0";
  