[leifdenby]

Replaces the hardcoded version = "0.1.0" with a version taken from the git tag via setuptools-scm, the same setup as mlwp-data-specs and mlwp-data-loaders (mlwp-tools/mlwp-data-loaders#20).

• Build backend switched from hatchling to setuptools + setuptools-scm, to match the sibling packages. The wheel still contains the mxalign package and the mxalign console script.
• The version is exposed as mxalign.__version__.
• uv.lock: drops the static version for mxalign. The edit was made by hand to avoid lockfile-format churn from an older local uv.
• tests.yaml now checks out with fetch-depth: 0 so tests resolve a real version, and a small test checks __version__ is set.

Verified locally: mxalign.__version__ gives 0.1.1.dev10+g5e7660ed0 (10 commits after the v0.1.0 tag), uv build works, and tests and pre-commit pass.

🤖 Generated with Claude Code

[leifdenby]

I've read through it all and am happy with this :)

[Copilot]

🔵 Needs a closer look

The hand-edited uv.lock with a removed mxalign version field was validated only against an older local uv, so a human must confirm uv sync --frozen still passes in CI under the newer pinned uv before approval.

No open issues 🎉

What changed in this PR

This PR migrates mxalign from a hardcoded project version to tag-based versioning using setuptools-scm, aligning it with the sibling packages mlwp-data-specs and mlwp-data-loaders. The build backend moves from hatchling to setuptools + setuptools-scm, the version is exposed at runtime as mxalign.__version__, and CI is adjusted so the version can resolve from git tags. The changes are self-consistent: no hardcoded 0.1.0 remains in code, the console script and package discovery (src/mxalign) are preserved, and the release workflow already checks out with fetch-depth: 0 + fetch-tags: true, so setuptools-scm works there too.

Changes:

• Switch build backend to setuptools + setuptools-scm with src-layout package discovery and a dynamic = ["version"] project version.
• Expose the resolved version as mxalign.__version__ via importlib.metadata.version and add a sanity test.
• Make the test workflow fetch full history (fetch-depth: 0) so tags resolve, drop the static version from uv.lock, and document the change in CHANGELOG.md.

File	Description
pyproject.toml	Replaces static version with dynamic = ["version"], switches to setuptools + setuptools-scm, and adds src-layout package config.
src/​mxalign/​__init__.py	Imports importlib.metadata.version, exports and sets __version__.
tests/​test_version.py	New test asserting __version__ is a non-empty, non-fallback string.
.github/​workflows/​tests.yaml	Adds fetch-depth: 0 to the checkout so tags are available for version resolution.
uv.lock	Removes the now-dynamic static version for the mxalign editable package.
CHANGELOG.md	Documents the versioning/build-backend change under Unreleased.

No blocking issues were found. The change set is complete and internally consistent; the only item worth a human glance is the hand-edited uv.lock (version field removed), whose compatibility with uv sync --frozen depends on CI's pinned uv version and can't be validated in this review environment.

_{Review effort: Balanced}

[mpvginde]

Looks good! Go ahead and merge.