Derive the package version from git tags via setuptools_scm

.github/workflows/release.yml

@@ -57,24 +57,20 @@ jobs:
   wheel:
     runs-on: ubuntu-latest
     steps:
+      # Full history: setuptools_scm derives the package version from the
+      # release tag (v1.1.0-alpha.16 -> 1.1.0a16), so the wheel is
+      # version-locked to the binaries of the same release.
       - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          fetch-tags: true
 
       - uses: actions/setup-python@v5
         with:
           python-version: "3.12"
 
       - name: build the scimesh wheel
-        env:
-          VERSION: ${{ github.ref_name }}
         run: |
-          # The tag (v1.1.0-alpha.10) becomes the package version in its
-          # PEP 440 form (1.1.0a10); the wheel is then version-locked to the
-          # binaries of the same release.
-          WHEEL_VERSION="${VERSION#v}"
-          WHEEL_VERSION="${WHEEL_VERSION/-alpha./a}"
-          WHEEL_VERSION="${WHEEL_VERSION/-beta./b}"
-          WHEEL_VERSION="${WHEEL_VERSION/-rc./rc}"
-          sed -i "s/^version = .*/version = \"${WHEEL_VERSION}\"/" pyproject.toml
           python -m pip install --quiet build
           python -m build --wheel --outdir dist
           ls -la dist/