anchor.diff:      };
     };
   
  +  certifi = buildPythonPackage rec {
  +    name = "certifi-${version}";
  +    version = "14.05.14";
  +
  +    src = fetchurl {
  +      url = "https://pypi.python.org/packages/source/c/certifi/${name}.tar.gz";
  +      sha256 = "0s8vxzfz6s4m6fvxc7z25k9j35w0rh6jkw3wwcd1az1mssncn6qy";
  +    };
  +
  +    meta = with stdenv.lib; {
  +      homepage = http://certifi.io/;
  +      description = "Python package for providing Mozilla's CA Bundle.";
  +      license = licenses.isc;
  +      maintainers = [ maintainers.koral ];
  +    };
  +  };
   
     characteristic = buildPythonPackage rec {
       name = "characteristic-14.1.0";
  
positive.code:       sha256 = "1wq083g9b1xsk89kb0wwpi4mxy63x6760vn9x5sk1fx36h27prqj";
      };
  
      # For some reason "python setup.py test" doesn't work
      doCheck = false;
  
      meta = with stdenv.lib; {
        description = "Simple Python implementation of the Git file formats and protocols.";
  
negative.code:     meta = {
        homepage = http://pypi.python.org/pypi/eventlet/;
        description = "A concurrent networking library for Python";
      };
    };
  
    fastimport = buildPythonPackage rec {
      name = "fastimport-${version}";
      version = "0.9.4";
  
      src = fetchurl {
        url = "https://pypi.python.org/packages/source/f/fastimport/${name}.tar.gz";
        sha256 = "0k8x7552ypx9rc14vbsvg2lc6z0r8pv9laah28pdwyynbq10825d";
      };
  
      meta = with stdenv.lib; {
        homepage = https://launchpad.net/python-fastimport;
        description = "VCS fastimport/fastexport parser";
        maintainers = [ maintainers.koral ];
        license = licenses.gpl2Plus;
      };
    };
  
  