CI workflow: trying out all.yml that build on Linux/MacOS/Windows.

.github/workflows/all.yml

@@ -0,0 +1,40 @@
+name: Linux/MacOs/Windows Wheels
+
+on: [push, pull_request]
+
+jobs:
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-20.04, macos-11, windows-2019]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@v2.16.5
+        env:
+          # Skip Python 32 bit Linux, and PyPy
+          CIBW_SKIP: "*-manylinux_i686 *musllinux* pp*"
+          CIBW_BEFORE_ALL_LINUX: yum install -y tk mesa-libGLU-devel
+          CIBW_BEFORE_BUILD: >
+            pip install cython FXrays low_index sphinx sphinx_rtd_theme &&
+            pip install --pre --extra-index-url https://test.pypi.org/simple cypari &&
+            pip install git+https://github.com/3-manifolds/PLink &&
+            pip install git+https://github.com/3-manifolds/snappy_manifolds &&
+            pip install git+https://github.com/3-manifolds/Spherogram
+          CIBW_BEFORE_TEST: >
+            pip install cython low_index &&
+            pip install --pre --extra-index-url https://test.pypi.org/simple cypari &&
+            pip install git+https://github.com/3-manifolds/PLink &&
+            pip install git+https://github.com/3-manifolds/snappy_manifolds &&
+            pip install git+https://github.com/3-manifolds/Spherogram
+          CIBW_REPAIR_WHEEL_COMMAND_LINUX: auditwheel repair --strip -w {dest_dir} {wheel}
+          CIBW_TEST_COMMAND: python -m snappy.test --skip-modern-opengl
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: snappy_all_wheels
+          path: ./wheelhouse/*.whl