build: add fallback version for builds without git metadata#120
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hatch-vcs fails the build when the source tree has no git metadata (release tarballs, some AUR helper build dirs), which made 'python -m build --wheel' produce no dist/ output. Fixes caelestia-dots#81
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Fixes #81
When the source tree has no git metadata (release tarballs, some AUR helper build setups), hatch-vcs cannot determine a version and the build backend aborts, so
python -m build --wheelproduces nodist/directory and the subsequentpython -m installer dist/*.whlfails withFileNotFoundErrorThis is exactly the paru log in the issue.This adds setuptools-scm's
fallback_versionvia[tool.hatch.version.raw-options], so such builds succeed with version0.0.0instead of failing.Verified by building the same tree with and without
.git: without this change the no-git build errors out (ERROR Backend subprocess exited when trying to invoke build_wheel); with it,caelestia-0.0.0-py3-none-any.whlis produced. Builds from a proper git checkout are unaffected and keep their hatch-vcs derived version (the nix build is also unaffected as it setsSETUPTOOLS_SCM_PRETEND_VERSION).