First test of actions building wheels.

.github/workflows/main.yml

@@ -17,15 +17,15 @@ env:
   ACTIONS_ALLOW_UNSECURE_COMMANDS: true
 
 jobs:
-  build:
+  test:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest] # macos-latest
+        os: [ubuntu-latest, windows-latest, macos-13, macos-14] # macos-latest
         python-version: ["3.9", "3.10", "3.11"]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - uses: actions/cache@v1
         if: startsWith(runner.os, 'Linux')
@@ -89,3 +89,30 @@ jobs:
           echo "backend: TkAgg" >> ~/.matplotlib/matplotlibrc
       - name: Test and coverage
         run: python setup.py test
+
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-13, macos-14]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      # Used to host cibuildwheel
+      - uses: actions/setup-python@v5
+
+      - name: Install cibuildwheel
+        run: python -m pip install cibuildwheel==2.19.2
+
+      - name: Build wheels
+        run: python -m cibuildwheel --output-dir wheelhouse
+        # to supply options, put them in 'env', like:
+        # env:
+        #   CIBW_SOME_OPTION: value
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
+          path: ./wheelhouse/*.whl