Add packaging of MeshPy to testing

.github/actions/build_wheel/action.yml

@@ -0,0 +1,24 @@
+name: build_wheel
+description: Build the MeshPy wheel
+inputs:
+  source-command:
+    description: Command to source the virtual environment
+    required: false
+    default: ""
+runs:
+  using: composite
+  steps:
+    - name: Build MeshPy wheel
+      shell: bash
+      run: |
+        cd ${GITHUB_WORKSPACE}
+        ${{ inputs.source-command }}
+        pip install build
+        python -m build
+        # Check if we got exactly one wheel file
+        shopt -s nullglob
+        files=(dist/*.whl)
+        if [ ${#files[@]} -ne 1 ]; then
+          echo "Expected exactly one .whl file in dist/, found ${#files[@]}"
+          exit 1
+        fi

.github/workflows/testing.yml

@@ -30,14 +30,17 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+      - name: Build wheel
+        uses: ./.github/actions/build_wheel
+        if: matrix.python-version == '3.12'
       - name: Run the test suite
         uses: ./.github/actions/run_tests
         with:
           # Test coverage and editable install with Python 3.10, otherwise we use a
           # non-editable installation and turn of coverage, because the coverage
           # only works in editable mode.
           install-command: >-
-            ${{ matrix.python-version == '3.10' && '-e .[dev]' || '.[dev]'}}
+            ${{ matrix.python-version == '3.10' && '-e .[dev]' || '"$(ls dist/*.whl | head -n 1)[dev]"'}}
           # The single space in the empty string is required, otherwise GitHub
           # evaluates the if clause wrong.
           additional-pytest-flags: >-

MANIFEST.in

@@ -0,0 +1 @@
+include src/meshpy/geometric_search/cython_lib.pyx