Bug 1737929 (SugarOnPy3) - sugar depends on Python 2
Summary: sugar depends on Python 2
Alias: SugarOnPy3
Product: Fedora
Classification: Fedora
Component: sugar
Version: 31
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Peter Robinson
QA Contact: Fedora Extras Quality Assurance
Depends On: 1735100 1736374 1736722 1736897 1736900 1737983 1737985 1737995 1738086 1738104 1738116 1738169 1738170 1738929 1738940 1738941 1738974 1738975 1738976 1738979 1738980 1738981 1738982 1738983 1738986 1738988 1738991 1738992 1738993 1738994 1738995 1738997 1739000 1739001 1739002 1739003 1739004 1739005 1739006 1739007 1739008 1739009 1739055 1739056 1739058 1739061 1739064 1739066 1739068 1739069 1739733 1739914 1739915 1747854 1751488 1674828 1701920 1734179
Blocks: F31_PY2REMOVAL
TreeView+ depends on / blocked
Reported: 2019-08-06 11:40 UTC by Lumír Balhar
Modified: 2019-09-19 09:32 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Last Closed:

Attachments (Terms of Use)
install sugar-desktop to Fedora-Mate-armhfp-31-20190824.n.0-sda.raw.xz (39.70 KB, text/plain)
2019-08-28 03:33 UTC, satellitgo
no flags Details

Description Lumír Balhar 2019-08-06 11:40:18 UTC
Python 2.7 will reach end-of-life in January 2020, over 9 years after it was released. This falls within the Fedora 31 lifetime.
Packages that depend on Python 2 are being switched to Python 3 or removed from Fedora: https://fedoraproject.org/wiki/Changes/F31_Mass_Python_2_Package_Removal#Information_on_Remaining_Packages
Python 2 will be retired in Fedora 32: https://fedoraproject.org/wiki/Changes/RetirePython2

To help planning, we'd like to know the plans for sugar's future. Specifically:

- What is the reason for the Python2 dependency? (Is it software written in Python, or does it just provide Python bindings, or use Python in the build system or test runner?) 

- What are the upstream/community plans/timelines regarding Python 3?

- What is the guidance for porting to Python 3? (Assuming that there is someone who generally knows how to port to Python 3, but doesn't know anything about the particular package, what are the next steps to take?)

This bug is filed semi-automatically, and might not have all the context specific to sugar.
If you need anything from us, or something is unclear, please mention it here.

Thank you.

Comment 1 Alex Perez 2019-08-06 23:05:13 UTC
I sit on the Oversight Board for Sugar Labs, as an elected member. Sugar is written in Python, and it makes use of several components/python modules which were never ported to Python 3, such as Telepathy. Sugar was originally written in an era when Python 3 did not exist. 

We are aware of this impending deadline, and have been working to make our codebase compatible with Python 3. Python has no full time programmers, so testing is slow, but work is being done.

Comment 2 Ben Cotton 2019-08-13 16:56:56 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle.
Changing version to '31'.

Comment 3 Ben Cotton 2019-08-13 17:35:25 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle.
Changing version to 31.

Comment 4 Lumír Balhar 2019-08-15 07:43:36 UTC
The current plan is to remove packages with dependency on Python 2 from Fedora 32 in the middle of November 2019. If you want to keep your package in Fedora after that date and you cannot port it to Python 3 yet, you need to request a FESCo exception for the package and all its Python 2 dependencies (even transitive) [1]. If you don't want to maintain it anymore, please orphan the package.

If you're considering filing the exception request, let us know. We can help (for example, we can help find all the dependencies).

[1] https://fedoraproject.org/wiki/Changes/RetirePython2#FESCo_exceptions

Comment 5 Peter Robinson 2019-08-19 12:19:39 UTC
going to use this as a tracker for sugar UX migration to python3 and link all the other bugs to depend on this so it can be tracked here.

Comment 6 Petr Viktorin 2019-08-19 13:56:09 UTC
I'm sorry for the spam!

We're trying to gather the information on about 1000 packages. We forgot to check that these 80 of them are related, and just need to be asked once :(

We've made a special case for "sugar-*" and "olpc-*" packages. Others (like "hippo-canvas") aren't that easy to catch: if you get more spam, please complain so we can fix it!

Comment 7 Peter Robinson 2019-08-19 13:59:54 UTC
We're looking to deprecate hippo-canvas, it was used in the old gtk2 Activities, there's a few more to migrate to the gtk3. There's overall been a multi year effort to move to python3 including moving from gstreamer 0.10 python bindings to py3 friendly introspection based gst 1.0 bindings etc. There's only a handful of gtk2 based Activities left (repoquery --whatrequires sugar-toolkit)

Comment 8 satellitgo 2019-08-28 03:33:26 UTC
Created attachment 1608780 [details]
install sugar-desktop to Fedora-Mate-armhfp-31-20190824.n.0-sda.raw.xz

branched f31 arm

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