anchor.diff:  , buildPythonPackage
   , config
   , fetchPyPi
  +, pythonPackages
   
  +, apscheduler
  +, beautifulsoup
  +, cherrypy
  +, deluge
  +, feedparser
  +, flask
  +, flask-compress
  +, flask-cors
  +, flask-login
  +, flask-restful
  +, flask-restplus
  +, future
  +, guessit
  +, html5lib
  +, jinja2
  +, jsonschema
  +, pathlib
  +, pathpy
   , pkgs
  -, pythonPackages
  +#, progressbar
  +, pynzb
  +, pyparsing
  +, pyrss2gen
  +, python-dateutil
  +, pyyaml
  +, requests2
  +, rpyc
  +, safe
  +, sqlalchemy
  +, transmissionrpc
   }:
   
   let
  
positive.code:     '';
  
    propagatedBuildInputs = [
      pythonPackages.apscheduler
      pythonPackages.beautifulsoup
      pythonPackages.cherrypy
      pythonPackages.feedparser
      pythonPackages.flask
      pythonPackages.flask-compress
      pythonPackages.flask-cors
      pythonPackages.flask-login
      pythonPackages.flask-restful
      pythonPackages.flask-restplus
      pythonPackages.future
      pythonPackages.guessit
      pythonPackages.html5lib
      pythonPackages.jinja2
      pythonPackages.jsonschema
      pythonPackages.pathpy
      #pythonPackages.progressbar
      pythonPackages.pynzb
      pythonPackages.pyparsing
      pythonPackages.pyrss2gen
      pythonPackages.python-dateutil
      pythonPackages.pyyaml
      pythonPackages.requests2
      pythonPackages.rpyc
      pythonPackages.safe
      pythonPackages.sqlalchemy
  
      #pythonPackages.paver
      #pythonPackages.python-tvrage
      #pythonPackages.tmdb3
      pythonPackages.transmissionrpc
    ] ++ optionals (pythonOlder "3.4") [
      pythonPackages.pathlib
    ] ++ optionals (config.pythonPackages.deluge or false) [
      pythonPackages.deluge
    ];
  
    disabled = isPy3k;
  
negative.code: 
  buildPythonPackage rec {
    name = "flexget-${version}";
    version = "2.0.37";
  
    src = fetchPyPi {
      package = "FlexGet";
      inherit version;
      sha256 = "8f9c5e53a2f4cf382b38c128229255bb7498fb9c9df8a113bdd2bc6ee39cd93f";
    };
  
    postPatch =
  