anchor.diff:      };
     };
   
  +  pyPdf = buildPythonPackage rec {
  +    name = "pyPdf-1.13";
  +
  +    src = pkgs.fetchurl {
  +      url = "https://pypi.python.org/packages/source/p/pyPdf/${name}.tar.gz";
  +      md5 = "7a75ef56f227b78ae62d6e38d4b6b1da";
  +    };
  +
  +    buildInputs = with self; [ ];
  +
  +    meta = {
  +      description = "Pure-Python PDF toolkit";
  +      homepage = "http://pybrary.net/pyPdf/";
  +      license = stdenv.lib.licenses.bsd3;
  +    };
  +  };
   
     pyopengl = buildPythonPackage rec {
       name = "pyopengl-${version}";
  
positive.code: 
      meta = {
        maintainers = [ stdenv.lib.maintainers.iElectric ];
      };
    };
  
  
negative.code:     };
    };
  
    pyparsing1 = buildPythonPackage rec {
      name = "pyparsing-1.5.7";
      disabled = isPy3k;
  
      src = pkgs.fetchurl {
        url = "http://pypi.python.org/packages/source/p/pyparsing/${name}.tar.gz";
        md5 = "9be0fcdcc595199c646ab317c1d9a709";
      };
  
      meta = {
        homepage = http://pyparsing.wikispaces.com/;
        description = "The pyparsing module is an alternative approach to creating and executing simple grammars, vs. the traditional lex/yacc approach, or the use of regular expressions.";
      };
    };
  
  
    pyparted = buildPythonPackage rec {
      name = "pyparted-${version}";
  