Bug 1898060

Summary: libproxy fails to build with Python 3.10: Could NOT find Python3Interp (truncates Python version to 3.1)
Product: [Fedora] Fedora Reporter: Miro Hrončok <mhroncok>
Component: libproxyAssignee: David King <amigadave>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: rawhideCC: amigadave, i, igor.raits, mhroncok, npmccallum, thrnciar
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: libproxy-0.4.17-2.fc35 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-06-21 16:37:01 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1890881, 1927309, 1927313    

Description Miro Hrončok 2020-11-16 10:05:58 UTC
libproxy fails to build with Python 3.10.0a2.

...
-- Could NOT find Python3Interp (missing: PYTHON3_EXECUTABLE PYTHON3_VERSION_STRING) 
...
RPM build errors:
error: File not found: /builddir/build/BUILDROOT/libproxy-0.4.15-27.fc34.x86_64/usr/lib/python3.10/site-packages/__pycache__/*
error: File not found: /builddir/build/BUILDROOT/libproxy-0.4.15-27.fc34.x86_64/usr/lib/python3.10/site-packages/libproxy.*
    File not found: /builddir/build/BUILDROOT/libproxy-0.4.15-27.fc34.x86_64/usr/lib/python3.10/site-packages/__pycache__/*
    File not found: /builddir/build/BUILDROOT/libproxy-0.4.15-27.fc34.x86_64/usr/lib/python3.10/site-packages/libproxy.*

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.10/fedora-rawhide-x86_64/01757127-libproxy/

For all our attempts to build libproxy with Python 3.10, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.10/package/libproxy/

Testing and mass rebuild of packages is happening in copr. You can follow these instructions to test locally in mock if your package builds with Python 3.10:
https://copr.fedorainfracloud.org/coprs/g/python/python3.10/

Let us know here if you have any questions.

Python 3.10 will be included in Fedora 35. To make that update smoother, we're building Fedora packages with early pre-releases of Python 3.10.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires), so if this package is required a lot, it's important for us to get it fixed soon.
We'd appreciate help from the people who know this package best, but if you don't want to work on this now, let us know so we can try to work around it on our side.

Setting severity to high, because libproxy is a critpath package.

Comment 1 Miro Hrončok 2020-11-16 10:08:54 UTC
This is because the Python version is constructed in CMakeLists.txt via string slicing to 3 characters:


$ rg -F 'sys.version' libproxy-0.4.15
libproxy-0.4.15/bindings/python/python3/CMakeLists.txt
9:		    -c "import sys; print (sys.version[0:3])"

libproxy-0.4.15/bindings/python/python2/CMakeLists.txt
9:		    -c "import sys; print (sys.version[0:3])"



$ python3.10 -c "import sys; print (sys.version[0:3])"
3.1


I recommend using something like this instead:


$ python3.10 -c "import sys; print('{}.{}'.format(*sys.version_info[0:2]))"
3.10

Comment 2 Ben Cotton 2021-02-09 16:11:53 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 34 development cycle.
Changing version to 34.

Comment 3 Miro Hrončok 2021-06-04 20:12:52 UTC
This is a mass-posted update. Sorry if it is not 100% accurate to this bugzilla.


The Python 3.10 rebuild is in progress in a Koji side tag. If you manage to fix the problem, please commit the fix in the rawhide branch, but don't build the package in regular rawhide.

You can either build the package in the side tag, with:

    $ fedpkg build --target=f35-python

Or you can the build and we will eventually build it for you.

Note that the rebuild is still in progress, so not all (build) dependencies of this package might be available right away.

Thanks.

See also https://fedoraproject.org/wiki/Changes/Python3.10

If you have general questions about the rebuild, please use this mailing list thread: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/G47SGOYIQLRDTWGOSLSWERZSSHXDEDH5/

Comment 4 Miro Hrončok 2021-06-07 22:57:50 UTC
The f35-python side tag has been merged to Rawhide. From now on, build as you would normally build.

Comment 5 Miro Hrončok 2021-06-08 11:16:25 UTC
*** Bug 1968829 has been marked as a duplicate of this bug. ***

Comment 6 Miro Hrončok 2021-06-15 20:22:45 UTC
Hello,

This is the first reminder (step 3 from https://docs.fedoraproject.org/en-US/fesco/Fails_to_build_from_source_Fails_to_install/#_package_removal_for_long_standing_ftbfs_and_fti_bugs).

If you know about this problem and are planning on fixing it, please acknowledge so by setting the bug status to ASSIGNED. If you don't have time to maintain this package, consider orphaning it, so maintainers of dependent packages realize the problem.