anchor.diff:  
     });
   
  +  rpyc = buildPythonPackage rec {
  +    name = "rpyc-${version}";
  +    version = "3.3.0";
  +
  +    src = fetchurl {
  +      url = "https://pypi.python.org/packages/source/r/rpyc/${name}.tar.gz";
  +      md5 = "6931cb92c41f547591b525142ccaeef1";
  +    };
  +
  +    propagatedBuildInputs = [ nose plumbum ];
  +
  +    meta = {
  +      description = "Remote Python Call (RPyC), a transparent and symmetric RPC library";
  +      homepage = http://rpyc.readthedocs.org;
  +      license = stdenv.lib.licenses.mit;
  +    };
  +  };
  +
     rsa = buildPythonPackage rec {
       name = "rsa-3.1.2";
   
  
positive.code:     };
    };
  
  
    # TODO
    # Installs correctly but fails tests that involve simple things like:
  
negative.code:   };
  
    flexget = buildPythonPackage rec {
      name = "FlexGet-1.2.161";
  
      src = fetchurl {
        url = "https://pypi.python.org/packages/source/F/FlexGet/${name}.tar.gz";
        md5 = "f7533e7b1df49cc8027fc4a2cde0290d";
      };
  
      buildInputs = [ nose ];
      # dateutil dependancy: requirement is dateutil !=2.0 and != 2.2,
      # dateutil_1_5 is used as it's supported, but a newer version could be used
      propagatedBuildInputs = [ paver feedparser sqlalchemy pyyaml rpyc
  	    beautifulsoup4 html5lib pyrss2gen pynzb progressbar jinja2 flask
  	    cherrypy requests dateutil_1_5 jsonschema python_tvrage tmdb3 ]
  	# enable deluge and transmission plugin support, if they're installed
  	++ stdenv.lib.optional (pkgs.config.pythonPackages.deluge or false)
  	    pythonpackages.deluge
  	++ stdenv.lib.optional (pkgs.transmission != null)
  	    pythonPackages.transmissionrpc;
  
      meta = {
        homepage = http://flexget.com/;
  