anchor.diff:  
   
     httplib2 = buildPythonPackage rec {
  -    name = "httplib2-0.6.0";
  +    name = "httplib2-0.7.6";
   
       src = fetchurl {
         url = "http://httplib2.googlecode.com/files/${name}.tar.gz";
  -      sha256 = "134pldyxayc0x4akzzvkciz2kj1w2dsim1xvd9b1qrpmba70dpjq";
  +      sha256 = "baa7bf431fa9d3c1016562de717e1ebb322a99df72a2918f6b5b8f65fa65bc2e";
       };
   
       doCheck = false; # doesn't have a test
   
       meta = {
  -      homepage = http://code.google.com/p/httplib2/;
  +      homepage = "http://code.google.com/p/httplib2";
         description = "A comprehensive HTTP client library";
  +      license = pkgs.lib.licenses.mit;
  +      maintainers = [ stdenv.lib.maintainers.garbas ];
  +      platforms = python.meta.platforms;
       };
     };
   
  
positive.code:     };
    };
  
    twisted = buildPythonPackage rec {
      name = "twisted-10.2.0";
  
  
negative.code:     };
    });
  
    oauth2 = buildPythonPackage (rec {
      name = "auth2-1.5.211";
  
      src = fetchurl {
        url = "http://pypi.python.org/packages/source/o/oauth2/oauth2-1.5.211.tar.gz";
        sha256 = "82a38f674da1fa496c0fc4df714cbb058540bed72a30c50a2e344b0d984c4d21";
      };
  
      propagatedBuildInputs = [ httplib2  ];
      doCheck = false;
  
      meta = {
        homepage = "https://github.com/simplegeo/python-oauth2";
        description = "library for OAuth version 1.0";
        license = pkgs.lib.licenses.mit;
        maintainers = [ stdenv.lib.maintainers.garbas ];
        platforms = stdenv.lib.platforms.linux;
      };
    });
  
    optfunc = buildPythonPackage ( rec {
      name = "optfunc-git";
  
  