anchor.diff:    propagatedBuildInputs = [
       jinja2 pygments docutils pytz unidecode six dateutil feedgenerator
       blinker pillow beautifulsoup4 markupsafe lxml
  +  ];
  +
  +  checkInputs = [
  +    nose
     ];
   
     postPatch= ''
  
positive.code:     owner = "getpelican";
      repo = "pelican";
      rev = version;
      sha256 = "0ag8il1b8ckfcv0f87ryrmw52k9m3xd025b4m6fvr8lsffyzv626";
    };
  
    doCheck = true;
  
    checkPhase = ''
      python -Wd -m unittest discover
    '';
  
    buildInputs = [
  
negative.code:     # pandoc
      git
      mock
      markdown
      typogrify
    ];
  