Migrate Deluge to Python 3

[John Garland]

It has to happen sooner or later.

Python 2.7 is the last major version in the 2.x series: ​http://python.org/download/releases/2.7/

This will also involve ditching setuptools in favour of distribute: ​http://packages.python.org/distribute/

[Calum]

Should we maybe consider moving to distribute for 1.4 then? It would make it one less step when Twisted and other libraries are finally migrated to Py3.

[Damien Churchill]

This involves diddly squat on our behalf WRT to distribute. distribute is a drop-in replacement for setuptools. Ubuntu has already switched to it, as has arch.

Twisted is going to be our biggest problem. I can't think of many others off the top of my head that will be a huge issue.

[Calum]

Current state of dependencies for Python 3:

Note: Twisted still in development, ​Twisted Python 3 Plan

Core

• twisted.internet
  • twisted.internet.defer - Yes
  • twisted.internet.error - Yes
  • twisted.internet.reactor - Yes
  • twisted.internet.threads - Yes
  • twisted.internet.ssl - Yes
  • twisted.internet.task - Yes
  • twisted.internet.protocol - Yes
  • twisted.internet.utils Yes
• twisted.python
  • twisted.python.log - Yes
  • twisted.python.failure - Yes
• twisted.trial
  • twisted.trial import unittest - Yes
• twisted.web
  • twisted.web.error - Yes
  • twisted.web.resource - Yes
  • twisted.web.client - Probably for GetPage and PartialDownloadError

• pyopenssl - Yes
• pyxdg - Yes
• chardet - Yes

Gtk

• twisted.internet.gtk2reactor -> gtk3reactor
• python-notify -> PyGObject
• pygame - Yes
• pygtk -> PyGObject

Web

• twisted.application
  • twisted.application.service - Yes
  • twisted.application.internet - Yes
• twisted.web
  • twisted.web.server - Yes
  • twisted.web.static - Yes
• mako Yes

Tests

• twisted.web.http - Almost

libtorrent

• boost - Yes
• bindings - Patches applied but untested

[mk.fg]

Replying to Cas:

Gtk

• python-notify - No
• pygame - Yes
• pygtk - Needs port to PyGObject

"python-notify" should probably be also listed as "Needs port to PyGObject" - "from gi.repository import Notify" can be used as an almost drop-in replacement for pynotify.

[Calum]

​http://dev.deluge-torrent.org/wiki/Plan/Python3