🐛 fix(patch): detect python -m pre_commit#115
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gaborbernat merged 1 commit intotox-dev:mainfrom Feb 18, 2026
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During .pth processing, sys.argv is ["-m", ...] without the module name. The patch detection missed this case, so `python -m pre_commit` ran without uv. Use sys.orig_argv (available since Python 3.10) to check for the pre_commit module name. Fixes tox-dev#80
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Running
python -m pre_commitbypassed the uv patching entirely because the.pthfile's detection logic didn't account for how Python populatessys.argvduring module execution. When invoked with-m, Python setssys.argv[0]to"-m"during site initialization (when the.pthfile runs), stripping the module name from the arguments. This meant tox configs using{env_python} -m pre_commitwould silently fall back to vanilla pre-commit without uv.The fix uses
sys.orig_argv(available since Python 3.10, which is the project's minimum) to inspect the original command line and detect whenpre_commitis the-mtarget module. The detection logic was also extracted into a standalone function to keep the boolean expression count within linting limits.Fixes #80