anchor.diff:  buildPythonPackage rec {
     name = "deluge-${version}";
     #version = "1.3.12";
  -  version = "2.0.0.dev556";
  +  version = "2016-05-18";
   
     /*src = fetchurl {
       url = "http://download.deluge-torrent.org/source/${name}.tar.bz2";
  
positive.code:   propagatedBuildInputs = [
    # geoip-database
    # setproctitle
      pkgs.libtorrent-rasterbar
      pkgs.librsvg
      pkgs.xdg-utils
      pythonPackages.chardet
  
negative.code: 
    disabled = isPy3k;
  
    doCheck = true;
  
    meta = with stdenv.lib; {
      description = "BitTorrent client with a client/server model";
  