anchor.diff:    propagatedBuildInputs = [
       jinja2 pygments docutils pytz unidecode six dateutil feedgenerator
       blinker pillow beautifulsoup4 markupsafe lxml
  +  ];
  +
  +  checkInputs = [
  +    nose
     ];
   
     postPatch= ''
  
positive.code:     # pandoc
      git
      mock
      nose
      markdown
      typogrify
    ];
  
negative.code:     owner = "getpelican";
      repo = "pelican";
      rev = version;
      sha256 = "1ww3kc5bzp5q7b23n2vmzqch1z06l7vrscn0h96cscvk45sxc7yz";
      # Remove unicode file names which leads to different checksums on HFS+
      # vs. other filesystems because of unicode normalisation.
      extraPostFetch = ''
        rm -r $out/pelican/tests/output/custom_locale/posts
      '';
    };
  
    doCheck = true;
  
    # Exclude custom locale test, which files were removed above to fix the source checksum
    checkPhase = ''
      nosetests -sv --exclude=test_custom_locale_generation_works pelican
    '';
  
    buildInputs = [
  