fix: keep build-backend metadata stdout off Hatch stdout - #2350
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takerukondo wants to merge 1 commit into
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fix: keep build-backend metadata stdout off Hatch stdout#2350takerukondo wants to merge 1 commit into
takerukondo wants to merge 1 commit into
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Non-Hatchling backends such as setuptools print build progress to stdout while preparing metadata, which breaks scripting `hatch version`. Forward the backend child's stdout to stderr so Hatch's own stdout stays clean. Fixes pypa#2069. Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
Fixes #2069.
Motivation
hatch versionon a setuptools-scm project currently printsrunning dist_info/ egg-info progress on stdout before the version string, which breaks scripting. After this change, stdout is only the version (build noise remains on stderr).Test plan
pytest tests/project/test_frontend.py::TestPrepareMetadata::test_backend_stdout_is_forwarded_to_stderrhatch versionin glyph/automat → stdout is only the version line; egg_info noise on stderrMade with Cursor