Bug 1737913

Summary:	bakefile depends on Python 2
Product:	[Fedora] Fedora	Reporter:	Lumír Balhar <lbalhar>
Component:	bakefile	Assignee:	Scott Talbert <swt>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	31	CC:	mhroncok, rosset.filipe, swt
Target Milestone:	---	Keywords:	Triaged
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
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Last Closed:	2019-11-12 03:41:57 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:
Bug Depends On:
Bug Blocks:	1698500

Description Lumír Balhar 2019-08-06 11:31:38 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 bakefile'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 bakefile.
If you need anything from us, or something is unclear, please mention it here.

Thank you.

Comment 1 Scott Talbert 2019-08-09 00:04:17 UTC

Bakefile is a command line application written in Python 2.

Upstream closed my ticket about supporting Python 3: https://github.com/vslavik/bakefile/issues/109

I do still use it (rarely) but I'm not terribly motivated to port it to Python 3, so it's probably a candidate for retirement.

Comment 2 Lumír Balhar 2019-08-09 10:59:33 UTC

Then, could you please retire it in rawhide?

Comment 3 Ben Cotton 2019-08-13 17:13:04 UTC

This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle.
Changing version to '31'.

Comment 4 Ben Cotton 2019-08-13 17:19:15 UTC

This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle.
Changing version to 31.

Comment 5 Lumír Balhar 2019-08-16 09:50:39 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, and nothing in Fedora uses it, you can retire it or just remove the Python 2 part from it (subpackage, module, bindings, etc.).

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 6 Scott Talbert 2019-09-23 20:13:11 UTC

I am working on porting this to Python 3.

Comment 7 Miro Hrončok 2019-10-21 22:48:00 UTC

This will be the latst dependent of python2-libxml2 very soon. Scott, have you managed to draft something I can help review or test?

Comment 8 Scott Talbert 2019-10-22 00:25:07 UTC

(In reply to Miro Hrončok from comment #7)
> This will be the latst dependent of python2-libxml2 very soon. Scott, have
> you managed to draft something I can help review or test?

No, not yet.  I'm currently stuck on bakefile's C extension that passes strings back and forth (ugh).  Hopefully this will give me a kick in the butt to get back at it.  :-)

Comment 9 Scott Talbert 2019-10-22 01:04:19 UTC

I removed the unneeded build-dep on python2-libxml2.  Hopefully this buys me a little more time.  :-)