Python plugin is broken in core24
Metadata
Current evaluation
Python plugin broke in core24 classic snaps due to Python 3.12 venv changes. Fixed by PR #4946 (squash-merged as 952a8e04d), which rewrites pyvenv.cfg's "home" key to /snap/<name>/current in snapcraft/parts/plugins/python_common.py.
Resolution: closed resolved
Reason: Maintainer tigarmo closed the report citing "Fixed in #4946". PR #4946 "fix: fix Python venv in core24 classic snaps" was squash-merged as 952a8e04d and added _fix_pyvenv logic in snapcraft/parts/plugins/python_common.py with unit tests, confirming the fix landed in the tree.
Evaluated by: mr-cal-bot
No scores available.
Issue body
### Bug Description
See [https://forum.snapcraft.io/t/upgrading-classic-snap-to-core24-using-snapcraft-8-3-causes-python-3-12-errors-at-runtime/41045](https://forum.snapcraft.io/t/upgrading-classic-snap-to-core24-using-snapcraft-8-3-causes-python-3-12-errors-at-runtime/41045)
In short, it looks like the changes to virtual environments in Python 3.12 are not working with the python plugin.
### To Reproduce
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### Environment
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### snapcraft.yaml
```shell
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```
### Relevant log output
```shell
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```
### Additional context
We still need confirmation but [this fix](https://forum.snapcraft.io/t/upgrading-classic-snap-to-core24-using-snapcraft-8-3-causes-python-3-12-errors-at-runtime/41045/11?u=tigarmo) should work and is feasible for us.
Evaluation history
| Date | Model | Scores | Action | Summary |
|---|---|---|---|---|
| stealth/space-bunny-alpha | — | closed resolved | Python plugin broke in core24 classic snaps due to Python 3.12 venv changes. Fixed by PR #4946 (squash-merged as 952a8e04d), which rewrites pyvenv.cfg's "home" key to /snap/<name>/current in snapcraft/parts/plugins/python_common.py. | |
| stealth/space-bunny-alpha | — | closed resolved | Python 3.12 venv breakage in core24 classic snaps fixed by rewriting pyvenv.cfg's 'home' key to /snap/<name>/current in PR #4946, squash-merged as 952a8e04d. Maintainer closed the issue as fixed. | |
| stealth/space-bunny-alpha | — | closed resolved | Python plugin broke venvs in core24 classic snaps due to Python 3.12 venv behaviour. Fixed by PR #4946 (commit 952a8e04d), which rewrites pyvenv.cfg 'home' to /snap/<name>/current; tracked as CRAFT-3162. | |
| stealth/space-bunny-alpha | — | closed resolved | Fixed Python 3.12 virtual environments for core24 classic snaps by correcting the pyvenv.cfg home path in PR #4946, squash-merged as 952a8e04d. | |
| qwen/qwen3.6-35b-a3b | — | — | Fixed the Python plugin failure in core24 caused by Python 3.12 virtual environment changes. The problem was resolved and merged in pull request #4946. | |
| qwen/qwen3.6-35b-a3b | — | — | The Python plugin core24 breakage from Python 3.12 venv changes was closed as fixed. The resolution was merged in pull request #4946. | |
| qwen/qwen3.6-35b-a3b | — | — | Python plugin breakage in core24 caused by Python 3.12 virtual environment changes was fixed in pull request #4946. | |
| qwen3.6-35b-a3b-mtp-q6 | — | — | Resolved a core24 Python plugin failure caused by Python 3.12 virtual environment changes. The fix was merged in pull request #4946. |
Update history
No update history recorded yet.
Related work
-
Likely Fixed By:
canonical/snapcraft#4946
(confidence 98%)
Merged PR explicitly closes #4942; adds pyvenv.cfg 'home' rewrite in python_common.py plus tests/unit/parts/plugins/test_python_plugin.py::test_fix_pyvenv.
Related issues
| Issue | Project | State | Summary | Similarity |
|---|---|---|---|---|
| #4946 fix: fix Python venv in core24 classic snaps | snapcraft | merged | PR #4946 squash-merged as 952a8e04d, fixing the Python plugin in core24 classic snaps by rewriting pyvenv.cfg's "home" key to /snap/<name>/current. Closes bug #4942. | |
| #786 Python plugin. Python is broken in core24 classic snaps if snap is used on an older Ubuntu LTS version | craft-parts | open | Core24 classic snaps using the Python plugin fail on older Ubuntu LTS hosts because staged Python cannot find its stdlib; Snapcraft 8.3.2's fix proved incomplete, with follow-up in snapcraft#5144. | |
| #4666 feat(plugins): support core24 in the Python plugin | snapcraft | merged | Merged PR #4666 as commit 10352d96d, adding core24 Python plugin support with Python 3.12 for confined snaps and clearer strict/devmode interpreter selection. | |
| #5144 error out if core24 classic python snap is created with the non-staged python binary | snapcraft | open | Add a Python-plugin guard for classic snaps staged without the python3-minimal symlink; current post_prime only rewrites pyvenv.cfg, leaving the core24 failure mode unresolved. |