Windows arm wheel build

.github/workflows/cibuildwheel.yml

@@ -55,7 +55,7 @@ jobs:
         include:
           - os: ubuntu-22.04
             arch: x86_64
-          - os: ubuntu-22.04
+          - os: ubuntu-24.04-arm
             arch: aarch64
 
     steps:
@@ -138,8 +138,48 @@ jobs:
           path: ${{ github.workspace }}/wheelhouse/*.whl
 
 
+  build_wheels_windows_arm:
+    name: Build wheels for ARM64 on Windows
+    runs-on: windows-11-arm
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-python@v6
+        name: Install Python
+        with:
+          python-version: 3.x
+
+      - name: Install vcpkg dependencies
+        shell: pwsh
+        run: |
+          # Install vcpkg
+          git clone https://github.com/Microsoft/vcpkg.git C:\vcpkg
+          cd C:\vcpkg
+          .\bootstrap-vcpkg.bat
+
+          # Install netcdf and dependencies
+          .\vcpkg.exe install hdf5:arm64-windows netcdf-c:arm64-windows zlib:arm64-windows
+
+          # Set environment variables for build
+          echo "HDF5_DIR=C:\vcpkg\installed\arm64-windows" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          echo "NETCDF4_DIR=C:\vcpkg\installed\arm64-windows" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+
+      - name: Build wheels for Windows ARM64
+        uses: pypa/cibuildwheel@v3.3.0
+        env:
+          CIBW_ARCHS: ARM64
+          CIBW_SKIP: "cp310-* cp314t-*"
+
+      - uses: actions/upload-artifact@v5
+        with:
+          name: pypi-artifacts-windows-11-arm-ARM64
+          path: ${{ github.workspace }}/wheelhouse/*.whl
+
+
   show-artifacts:
-    needs: [build_bdist, build_sdist, build_wheels_winmac]
+    needs: [build_bdist, build_sdist, build_wheels_winmac, build_wheels_windows_arm]
     name: "Show artifacts"
     runs-on: ubuntu-22.04
     steps:
@@ -155,7 +195,7 @@ jobs:
 
 
   publish-artifacts-pypi:
-    needs: [build_bdist, build_sdist, build_wheels_winmac]
+    needs: [build_bdist, build_sdist, build_wheels_winmac, build_wheels_windows_arm]
     name: "Publish to PyPI"
     runs-on: ubuntu-22.04
     # upload to PyPI for every tag starting with 'v'

pyproject.toml

@@ -36,7 +36,8 @@ classifiers = [
 dependencies = [
     "cftime",
     "certifi",
-    "numpy",
+    "numpy>=2.3.0; platform_system == 'Windows' and platform_machine == 'ARM64'",
+    "numpy>=1.21.2; platform_system != 'Windows' or platform_machine != 'ARM64'",
 ]
 dynamic = ["version"]
 
@@ -156,3 +157,12 @@ environment = {MACOSX_DEPLOYMENT_TARGET="14.0",HDF5_DIR="/Users/runner/micromamb
 select = "*-win_*"
 inherit.environment = "append"
 environment = {HDF5_DIR='C:\\\\Users\\runneradmin\\micromamba\\envs\\build\\Library',netCDF4_DIR='C:\\\\Users\\runneradmin\\micromamba\\envs\\build\\Library',PATH='C:\\\\Users\\runneradmin\\micromamba\\envs\\build\\Library\\bin;${PATH}',NETCDF_PLUGIN_DIR='C:\\\\Users\\runneradmin\\micromamba\\envs\\build\\Library\\hdf5\\lib\\plugin'}
+
+[[tool.cibuildwheel.overrides]]
+select = "*-win_arm64"
+inherit.environment = "append"
+environment = { HDF5_DIR = 'C:\\\\vcpkg\\\\installed\\\\arm64-windows', netCDF4_DIR = 'C:\\\\vcpkg\\\\installed\\\\arm64-windows', PATH = 'C:\\\\vcpkg\\\\installed\\\\arm64-windows\\\\bin;${PATH}', NO_CDL = '1' }
+repair-wheel-command = [
+  "delvewheel show {wheel}",
+  "delvewheel repair -w {dest_dir} {wheel}",
+]