Bug 2424309 - waf fails to build with Python 3.15: AttributeError: 'SourceFileLoader' object has no attribute 'load_module'. Did you mean: 'exec_module'?
Summary: waf fails to build with Python 3.15: AttributeError: 'SourceFileLoader' objec...
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: waf
Version: rawhide
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Thomas Moschny
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: PYTHON3.15
TreeView+ depends on / blocked
 
Reported: 2025-12-22 15:01 UTC by Karolina Surma
Modified: 2026-03-01 13:48 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-03-01 13:48:15 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)

Description Karolina Surma 2025-12-22 15:01:51 UTC
waf fails to build with Python 3.15.0a3.

+ /usr/bin/python3 /builddir/build/SOURCES/unpack_wafdir.py _temp
Traceback (most recent call last):
  File "/builddir/build/SOURCES/unpack_wafdir.py", line 11, in <module>
    waf = SourceFileLoader('waf', src).load_module()
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'SourceFileLoader' object has no attribute 'load_module'. Did you mean: 'exec_module'?

https://docs.python.org/3.15/whatsnew/3.15.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.15/fedora-rawhide-x86_64/09935490-waf/

For all our attempts to build waf with Python 3.15, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.15/package/waf/

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 3.15:
https://copr.fedorainfracloud.org/coprs/g/python/python3.15/

Let us know here if you have any questions.

Python 3.15 is planned to be included in Fedora 45.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.15.
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 Thomas Moschny 2026-03-01 13:48:15 UTC
Should be fixed in https://koji.fedoraproject.org/koji/buildinfo?buildID=2950064.


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