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Bug 1817778

Summary: python-slixmpp fails to build with Python 3.9: No module named 'xml.etree.cElementTree'
Product: [Fedora] Fedora Reporter: Miro Hrončok <mhroncok>
Component: python-slixmppAssignee: Matthieu Saulnier <casper>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: rawhideCC: casper, cstratak, igor.raits, louiz, mhroncok, mplch
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: python-slixmpp-1.4.2-5.fc33 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-06-17 22:29:00 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: 1803234, 1803235, 1785415    

Description Miro Hrončok 2020-03-26 23:58:53 UTC
python-slixmpp fails to build with Python 3.9.0a5.

+ /usr/bin/python3 setup.py build '--executable=/usr/bin/python3 -s'
Traceback (most recent call last):
  File "/builddir/build/BUILD/slixmpp-slix-1.4.2/setup.py", line 20, in <module>
    from slixmpp.version import __version__
  File "/builddir/build/BUILD/slixmpp-slix-1.4.2/slixmpp/__init__.py", line 17, in <module>
    from slixmpp.stanza import Message, Presence, Iq
  File "/builddir/build/BUILD/slixmpp-slix-1.4.2/slixmpp/stanza/__init__.py", line 10, in <module>
    from slixmpp.stanza.error import Error
  File "/builddir/build/BUILD/slixmpp-slix-1.4.2/slixmpp/stanza/error.py", line 9, in <module>
    from slixmpp.xmlstream import ElementBase, ET
  File "/builddir/build/BUILD/slixmpp-slix-1.4.2/slixmpp/xmlstream/__init__.py", line 10, in <module>
    from slixmpp.xmlstream.stanzabase import StanzaBase, ElementBase, ET
  File "/builddir/build/BUILD/slixmpp-slix-1.4.2/slixmpp/xmlstream/stanzabase.py", line 20, in <module>
    from xml.etree import cElementTree as ET
ImportError: cannot import name 'cElementTree' from 'xml.etree' (/usr/lib64/python3.9/xml/etree/__init__.py)

See https://docs.python.org/3.9/whatsnew/3.9.html#removed

"The xml.etree.cElementTree module has been removed."


For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.9/fedora-rawhide-x86_64/01321111-python-slixmpp/

For all our attempts to build python-slixmpp with Python 3.9, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.9/package/python-slixmpp/

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 3.9:
https://copr.fedorainfracloud.org/coprs/g/python/python3.9/

Let us know here if you have any questions.

Python 3.9 will be included in Fedora 33. To make that update smoother, we're building Fedora packages with early pre-releases of Python 3.9.
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.

Comment 1 Miro Hrončok 2020-05-25 13:01:09 UTC
This comment is mass posted to all bugs blocking the Python 3.9 tracker, sorry if it is not 100 % relevant. When in doubt, please ask.


The Python 3.9 rebuild is in progress in a Koji side tag.

If you fix this bug, please don't rebuild the package in regular rawhide, but do it in the side tag with:

    $ fedpkg build --target=f33-python

The rebuild is progressing slowly and it is possible this package won't have all the required build dependencies yet. If that's the case, please just leave the fix committed and pushed and we will eventually rebuild it for you.

You are not asked to go and try rebuild all the missing dependencies yourself. If you know there is a bootstrap loop in the dependencies, let me know and we can untangle it together.

If you want to test your fix or reproduce the failure, you can still use the Copr repo mentioned in the initial comment of this bug: https://copr.fedorainfracloud.org/coprs/g/python/python3.9/

Comment 2 Miro Hrončok 2020-05-29 07:11:15 UTC
Python 3.9 update: The f33-python side tag is currently being merged.

New builds in f33-python are no longer possible, but python3 is not yet updated to Python 3.9 in rawhide. You can check when Python is Python 3.9 with:

    $ koji wait-repo f33-build --build python3.9-3.9.0~b1-3.fc3

And build the packages normally after that.

Comment 3 Tomáš Hrnčiar 2020-06-11 10:39:51 UTC
*** Bug 1841781 has been marked as a duplicate of this bug. ***

Comment 4 Charalampos Stratakis 2020-06-17 22:29:00 UTC
Fixed by backporting https://lab.louiz.org/poezio/slixmpp/-/commit/7218bb44997b8b3cc5bed114f6bfc668d1e7d913