anchor.diff:  , isPy3
   , lib
   , python
  -, pythonOlder
   
   , apscheduler
   , beautifulsoup
  
positive.code: , html5lib
  , jinja2
  , jsonschema
  , pathlib
  , pathpy
  , pkgs
  #, progressbar
  
negative.code:     zxcvbn-python
    ] ++ optionals isPy2 [
      deluge
    ];
  
    postPatch = /* Allow using newer dependencies */ ''
  