anchor.diff:  , rpyc
   , safe
   , sqlalchemy
  +, terminaltables
   , transmissionrpc
   }:
   
   let
     inherit (stdenv.lib)
  -    optionals;
  -  inherit (pythonPackages)
  -    isPy3k
  -    pythonOlder;
  +    optionals
  +    optionalString;
   
     version = "2.7.4";
   in
  
positive.code:     rpyc
      safe
      sqlalchemy
  
      #paver
      #python-tvrage
  
negative.code:     apscheduler
      beautifulsoup
      cherrypy
      colorclass
      feedparser
      flask
      flask-compress
  