anchor.diff:    src = fetchPyPi {
       package = "html5lib";
       inherit version;
  -    sha256 = "ee747c0ffd3028d2722061936b5c65ee4fe13c8e4613519b4447123fc4546298";
  +    sha256 = "66cb0dcfdbbc4f9c3ba1a63fdb511ffdbd4f513b2b6d81b80cd26ce6b3fb3736";
     };
   
     buildInputs = [
  
positive.code: { stdenv
  , buildPythonPackage
  , fetchPyPi
  
  , six
  , webencodings
  }:
  
  let
    version = "0.999999999";
  in
  buildPythonPackage {
    name = "html5lib-${version}";
  
negative.code:     webencodings
    ];
  
    meta = with lib; {
      maintainers = with maintainers; [
        wkennington
      ];
  