Testing aarch64 build action.

.github/workflows/build_wheels.yml

@@ -9,18 +9,20 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-20.04]
+        arch: [aarch64]
+        #arch: [x86_64, i686, aarch64]
     steps:
       - uses: actions/checkout@v4
+      - name: Set up QEMU to emulate aarch64
+        if: matrix.arch == 'aarch64'
+        uses: docker/setup-qemu-action@v3
+        with:
+          platforms: arm64
+      - name: Build aarch64 wheels
+        if: matrix.arch == 'aarch64'
+        run: echo 'CIBW_ARCHS_LINUX=aarch64' >> $GITHUB_ENV
       - name: Build wheels
         uses: pypa/[email protected]
-        # env:
-        #   CIBW_SOME_OPTION: value
-        #    ...
-        # with:
-        #   package-dir: .
-        #   output-dir: wheelhouse
-        #   config-file: "{package}/pyproject.toml"
-
       - uses: actions/upload-artifact@v4
         with:
           name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}