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test_sysconfig.TestSysConfig.test_sysconfigdata_json fails: it expects 'userbase' to be '/root/.local' #128055
Description
Bug report
Bug description:
As in the title. We hit this in Fedora, can it be caused by the mismatch of users (one which generated the file, the other which runs tests?)
FAIL: test_sysconfigdata_json (test.test_sysconfig.TestSysConfig.test_sysconfigdata_json)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/lib64/python3.14/test/test_sysconfig.py", line 671, in test_sysconfigdata_json
self.assertEqual(system_config_vars, json_config_vars)
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
<snip>
- 'userbase': '/root/.local'}
? ---
+ 'userbase': '/builddir/.local'}
? +++++++CPython versions tested on:
3.14
Operating systems tested on:
Linux
Activity
Eclips4 commentedon Dec 18, 2024
cc @FFY00
FFY00 commentedon Dec 18, 2024
@befeleme thanks for the report, please provide reproduction instructions, otherwise I can't debug the issue.
befeleme commentedon Dec 18, 2024
For now I only have a Fedora-specific example. I'm not sure whether this is something related to our environment only or a general issue. It appeared on our CI which installs the built Python rpm package and runs the test suite in a fresh environment. I don't control the environment, but you can see the results here: https://artifacts.dev.testing-farm.io/a7c444e9-2e53-4a09-8a5a-33666297c776/#artifacts-git-refs-pull-19-headndwq3vz8/tests/tests.yml
To reproduce with a Fedora Rawhide container:
python3.14.0a3 as an RPM can be found here: https://koji.fedoraproject.org/koji/taskinfo?taskID=126962646
python3.14-libs contains the
/usr/lib64/python3.14/_sysconfig_vars__linux_x86_64-linux-gnu.jsonfile, which was generated during the build, hence the 'userbase' is set to '/builddir/.local'.For convenience, download all the
python3.14-*.x86_64.rpmto a fresh Fedora Rawhide container.Install with:
dnf install python3.14*Run
python3.14 -m test test_sysconfig- the same AssertionError appears.I'm trying to find a better reproducer that wouldn't require rpm magic.
pythonGH-128055: fix test_sysconfigdata_json outside the builddir
FFY00 commentedon Dec 18, 2024
You are running the tests after installation, right? Since
userbaseis generated dynamically, it would change after installing. I opened GH-128070 to make the test ignoreuserbase. I also opened GH-128072 to explore a way to mitigate this kind of issues.Feel free to ignore this test for now, or backport the fix. The failure is a false positive, it does not expose a real bug.
befeleme commentedon Dec 19, 2024
Yes. Thank you for looking into this.
Merge branch 'main' into pythongh-128055
GH-128055: fix test_sysconfigdata_json outside the builddir (#128070)