ci: adding macosx build

Author: lachlangrose

.github/workflows/pypi.yml

@@ -22,14 +22,22 @@ jobs:
           path: ./dist/*.tar.gz
   wheels:
     name: Build wheels
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest,macos-latest]
+    env:
+      MACOSX_DEPLOYMENT_TARGET: "10.13"  
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
           pip install cibuildwheel
+      - if: matrix.os == 'macos-latest'
+        run: | 
+          brew install cgal
       - name: Build wheels
         run: |
           cibuildwheel --output-dir dist