Try building on Windows only

.github/workflows/build.yaml

@@ -3,20 +3,39 @@ name: Build
 on: [workflow_dispatch]
 
 jobs:
-  build_wheels:
-    name: Build wheels on ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, windows-latest, macos-13, macos-14]
+  build-windows:
+    name: Build wheels on Windows
+    runs-on: windows-latest
+    # strategy:
+    #   matrix:
+    #     os: [ubuntu-latest, windows-latest, macos-13, macos-14]
 
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - uses: ilammy/msvc-dev-cmd@v1
+        with:
+          arch: x64
+
+      - name: Setup vcpkg package manager
+        run: |
+          mkdir .cache
+          git clone https://github.com/microsoft/vcpkg --branch 2024.03.25 .cache/vcpkg
+          .cache/vcpkg/bootstrap-vcpkg.bat
+
       - name: Install cibuildwheel
         run: pip install cibuildwheel==2.17.0
+
       - name: Build wheels
         run: python -m cibuildwheel --output-dir wheelhouse
+        env:
+          CIBW_SKIP: pp* *-win32
+          CMAKE_TOOLCHAIN_FILE: .cache/vcpkg/scripts/buildsystems/vcpkg.cmake
+          VCPKG_TARGET_TRIPLET: x64-windows-static
+
       - uses: actions/upload-artifact@v4
         with:
           name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}

pyproject.toml

@@ -2,6 +2,10 @@
 name = "zint"
 version = "0.1.0"
 description="A minimal example package (with pybind11)"
+requires-python = ">=3.8"
+dependencies = [
+    "numpy"
+]
 
 [build-system]
 requires = [

src/zint/vcpkg.json

@@ -0,0 +1,7 @@
+{
+	"dependencies": ["zlib", "libpng"],
+	"overrides": [
+		{"name": "zlib", "version": "1.3.1"},
+		{"name": "libpng", "version": "1.6.40"}
+	]
+}