anchor.diff:    };
   
     sphinx_rtd_theme = buildPythonPackage (rec {
  -    name = "sphinx_rtd_theme-0.1.8";
  +    name = "sphinx_rtd_theme-0.1.9";
   
       src = pkgs.fetchurl {
         url = "https://pypi.python.org/packages/source/s/sphinx_rtd_theme/${name}.tar.gz";
  -      sha256 = "12mnb7qscr07mllmyyqfpx37778sr21m8663b4fivnk17bnk7xkl";
  -    };
  -
  +      sha256 = "18d0r63w7jpdrk4q5qy26n08vdlmnj9sar93akwjphyambw4cf17";
  +    };
  +
  +    # It doesn't actually have real dependencies
       postPatch = ''
         rm requirements.txt
         touch requirements.txt
  
positive.code:       sha256 = "919f26a68b2c17a7634da993d91339e288964f93c274f1343e3bbbe2096e1128";
      };
  
      # No tests included
      doCheck = false;
  
      propagatedBuildInputs = with self; [ PyStemmer ];
  
      meta = {
        description = "16 stemmer algorithms (15 + Poerter English stemmer) generated from Snowball algorithms";
  
negative.code:       license = licenses.bsd3;
        platforms = platforms.all;
      };
    };
  
    sphinx_1_2 = self.sphinx.override rec {
      name = "sphinx-1.2.3";
  