FIX: Need qemu

.github/workflows/cibuildwheel.yml

@@ -4,7 +4,6 @@ on:
   pull_request:
     branches:
       - master
-
   push:
     tags:
       - "v*"
@@ -13,6 +12,7 @@ jobs:
   build_bdist:
     name: "Build ${{ matrix.os }} (${{ matrix.arch }}) wheels"
     runs-on: ${{ matrix.os }}
+    timeout-minutes: 30  # should be long enough, but let's prevent hangs
     strategy:
       fail-fast: false
       matrix:
@@ -33,6 +33,13 @@ jobs:
       with:
         fetch-depth: 0
 
+    # For aarch64 support
+    # https://cibuildwheel.pypa.io/en/stable/faq/#emulation
+    - uses: docker/setup-qemu-action@v3
+      with:
+        platforms: all
+      if: runner.os == 'Linux' && matrix.arch == 'aarch64'
+
     - name: "Building ${{ matrix.os }} (${{ matrix.arch }}) wheels"
       uses: pypa/[email protected]
       env: