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base repository: tox-dev/tox
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base: 4.47.1
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head repository: tox-dev/tox
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compare: 4.47.2
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  • 2 commits
  • 3 files changed
  • 4 contributors

Commits on Mar 3, 2026

  1. fix: handle OSError in pos_args path existence check (#3847) 

    When positional arguments exceed the filesystem's filename length limit
(typically 255 characters), `Path.exists()` raises `OSError: [Errno 36]
File name too long` instead of returning `False`.

This causes `tox` to crash with an internal error when **long** `-k`
expressions are passed via `{posargs}`, e.g.:

    tox -e py3 -- -k "test_foo or test_bar or test_baz or ..."

The traceback is:

    File ".../tox/config/main.py", line 58, in pos_args
        if path_arg.exists() and not path_arg.is_absolute():
OSError: [Errno 36] File name too long: 'test_foo or test_bar or ...'

This is because `pos_args()` checks each argument with
`path_arg.exists()` to determine whether to rewrite relative paths for
`changedir`. An argument that is too long for the filesystem clearly
cannot be a path, so the fix catches `OSError` and treats such arguments
as non-paths.

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- [ ] ran the linter to address style issues (`tox -e fix`) [XXX]
- [x] wrote descriptive pull request text
- [x] ensured there are test(s) validating the fix
- [x] added news fragment in `docs/changelog` folder -- 
- [ ] updated/extended the documentation

<details><summary>[XXX]: tried but failed to install sphinx... might try
again later</summary>

```
[INFO] Using pre-commit with uv 0.10.7 via pre-commit-uv 4.2.1
An unexpected error has occurred: CalledProcessError: command: ('/home/yoh/proj/misc/tox/.tox/fix/bin/uv', '--project', '/home/yoh/proj/misc/tox', 'pip', 'install', '.', 'sphinx>=9.1')
return code: 1
stdout: (none)
stderr:
    Using Python 3.11.12 environment at: py_env-python3
      × No solution found when resolving dependencies:
      ╰─▶ Because the current Python version (3.11.12) does not satisfy
          Python>=3.12 and sphinx==9.1.0 depends on Python>=3.12, we can conclude
          that sphinx==9.1.0 cannot be used.
          And because only sphinx<=9.1.0 is available and you require sphinx>=9.1,
          we can conclude that your requirements are unsatisfiable.
Check the log at /home/yoh/.cache/pre-commit/pre-commit.log
fix: exit 3 (24.65 seconds) /home/yoh/proj/misc/tox> pre-commit run --all-files --show-diff-on-failure pid=4127791
  fix: FAIL code 3 (25.28=setup[0.62]+cmd[24.65] seconds)
  evaluation failed :( (25.34 seconds)

```
</details>

---------

Co-authored-by: Claude Sonnet 4.5 <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
    @yarikoptic @claude @pre-commit-ci
    3 people authored Mar 3, 2026
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  2. release 4.47.2

    @gaborbernat
    gaborbernat committed Mar 3, 2026
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