ci: build aarch64 wheels on Linux

Author: saghul

.github/workflows/build-wheels.yml

@@ -12,7 +12,13 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+      - name: Set up QEMU
+        if: runner.os == 'Linux'
+        uses: docker/setup-qemu-action@v1
+        with:
+          platforms: all
       - name: Build wheels
         uses: joerick/cibuildwheel@v1.11.0
         env:
           CIBW_BUILD: "cp36-* cp37-* cp38-* cp39-*"
+          CIBW_ARCHS_LINUX: auto aarch64

.github/workflows/release-wheels.yml

@@ -15,10 +15,16 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+      - name: Set up QEMU
+        if: runner.os == 'Linux'
+        uses: docker/setup-qemu-action@v1
+        with:
+          platforms: all
       - name: Build wheels
         uses: joerick/cibuildwheel@v1.11.0
         env:
           CIBW_BUILD: "cp36-* cp37-* cp38-* cp39-*"
+          CIBW_ARCHS_LINUX: auto aarch64
       - uses: actions/upload-artifact@v2
         with:
           path: ./wheelhouse/*.whl