Split in 2 workflow to speed things up

.github/workflows/build_wheels.yml

@@ -40,13 +40,6 @@ jobs:
       - name: Install cibuildwheel
         run: python -m pip install "cibuildwheel>=2.22,<2.23"
 
-      # Needed for Linux aarch64 builds
-      - name: Set up QEMU
-        if: runner.os == 'Linux'
-        uses: docker/setup-qemu-action@v1
-        with:
-          platforms: all
-
       - name: Build wheels
         run: python -m cibuildwheel --output-dir wheelhouse
         env:
@@ -55,10 +48,8 @@ jobs:
           # Build wheels for Apple x86_64 only; we use another workflow for Apple arm64
           CIBW_ARCHS_MACOS: "native"
           # Build manylinux2014 wheels
-          CIBW_ARCHS_LINUX: auto aarch64
           CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
           CIBW_MANYLINUX_I686_IMAGE: manylinux2014
-          CIBW_MANYLINUX_AARCH64_IMAGE: manylinux2014
           # The C libraries (OpenSSL and Zlib) only need to be built once per OS
           # as they are not tied to a specific Python version
           CIBW_BEFORE_ALL: "python -m pip install setuptools invoke && invoke build.deps"

.github/workflows/build_wheels_linux_aarch64.yml

@@ -0,0 +1,50 @@
+# Workflow just for linux aarch64 wheels so it can run in parallel with the build_wheels workflow 
+name: Build aarch64 Wheels
+
+on:
+  push:
+    branches: [ release ]
+  pull_request:
+    branches: [ release ]
+
+jobs:
+  build_wheels:
+    name: Build aarch64 wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-22.04]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        name: Install Python
+        with:
+          python-version: '3.10'
+
+      - name: Install cibuildwheel
+        run: python -m pip install "cibuildwheel>=2.22,<2.23"
+
+      # Needed for Linux aarch64 builds
+      - name: Set up QEMU
+        if: runner.os == 'Linux'
+        uses: docker/setup-qemu-action@v1
+        with:
+          platforms: all
+
+      - name: Build wheels
+        run: python -m cibuildwheel --output-dir wheelhouse
+        env:
+          CIBW_BUILD: "cp39-* cp310-* cp311-* cp312-* cp313-*"
+          CIBW_ARCHS_LINUX: aarch64  # Specifically build linux aarch64 wheels
+          CIBW_MANYLINUX_AARCH64_IMAGE: manylinux2014
+          CIBW_BEFORE_ALL: "python -m pip install setuptools invoke && invoke build.deps"
+          CIBW_BEFORE_BUILD: "python -m pip install setuptools invoke && invoke build.nassl"
+          CIBW_TEST_REQUIRES: "pytest"
+          CIBW_TEST_COMMAND: "python -m pytest {project}/tests"
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.os }}-wheels
+          path: ./wheelhouse/*.whl