anchor.diff:      mock
       pytestCheckHook
     ];
  +
  +  postPatch = ''
  +    substituteInPlace setup.py \
  +      --replace "cmarkgfm>=0.5.0,<0.7.0" "cmarkgfm>=0.5.0,<1"
  +  '';
   
     pythonImportsCheck = [
       "readme_renderer"
  
positive.code:     bleach
      cmarkgfm
      docutils
      future
      pygments
    ];
  
  
negative.code: , cmarkgfm
  , docutils
  , fetchPypi
  , mock
  , pygments
  , pytestCheckHook
  