anchor.diff:      cherrypy
       mock
       pytestCheckHook
  -  ];
  +  ] ++ passthru.optional-dependencies.filecache;
   
     pythonImportsCheck = [
       "cachecontrol"
     ];
  +
  +  passthru.optional-dependencies = {
  +    filecache = [ lockfile ];
  +    redis = [ redis ];
  +  };
   
     meta = with lib; {
       description = "Httplib2 caching for requests";
  
positive.code: , msgpack
  , pytestCheckHook
  , pythonOlder
  , requests
  }:
  
  buildPythonPackage rec {
    pname = "cachecontrol";
    version = "0.12.10";
    format = "setuptools";
  
    disabled = pythonOlder "3.6";
  
negative.code:     owner = "ionrock";
      repo = pname;
      rev = "v${version}";
      hash = "sha256-uUPIQz/n347Q9G7NDOGuB760B/KxOglUxiS/rYjt5Po=";
    };
  
    propagatedBuildInputs = [
      msgpack
      requests
    ];
  