Attempt to add windows wheel build

.github/workflows/build_wheels.yml

@@ -13,6 +13,67 @@ env:
   FORCE_COLOR: 3
 
 jobs:
+  build_windows_wheels:
+    name: Wheels (windows-latest)
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: 'true'
+      - uses: actions/setup-python@v5
+        with:
+          python-version: 3.11
+
+      - name: Get number of cores on Windows
+        id: get_num_cores
+        shell: python
+        run: |
+          from os import environ, cpu_count
+          num_cpus = cpu_count()
+          output_file = environ['GITHUB_OUTPUT']
+          with open(output_file, "a", encoding="utf-8") as output_stream:
+              output_stream.write(f"count={num_cpus}\n")
+
+      - name: Install vcpkg on Windows
+        run: |
+          cd C:\
+          rm -r -fo 'C:\vcpkg'
+          git clone https://github.com/microsoft/vcpkg
+          cd vcpkg
+          .\bootstrap-vcpkg.bat
+
+      - name: Cache packages installed through vcpkg on Windows
+        uses: actions/cache@v4
+        env:
+          cache-name: vckpg_binary_cache
+        with:
+          path: C:\Users\runneradmin\AppData\Local\vcpkg\archives
+          key: ${{ runner.os }}-build-VS2022-${{ env.cache-name }}-${{ hashFiles('vcpkg*.json') }}
+
+      - name: Build wheels on Windows
+        run: pipx run cibuildwheel --output-dir wheelhouse
+        env:
+          CIBW_ENVIRONMENT: >
+            PYBAMM_USE_VCPKG=ON
+            VCPKG_ROOT_DIR=C:\vcpkg
+            VCPKG_DEFAULT_TRIPLET=x64-windows-static-md
+            VCPKG_FEATURE_FLAGS=manifests,registries
+            CMAKE_GENERATOR="Visual Studio 17 2022"
+            CMAKE_GENERATOR_PLATFORM=x64
+            CMAKE_BUILD_PARALLEL_LEVEL=${{ steps.get_num_cores.outputs.count }}
+          CIBW_ARCHS: AMD64
+          CIBW_BEFORE_BUILD: python -m pip install setuptools wheel delvewheel # skip CasADi and CMake
+          CIBW_REPAIR_WHEEL_COMMAND: delvewheel repair --add-path C:/Windows/System32 -w {dest_dir} {wheel}
+          CIBW_TEST_EXTRAS: "dev"
+          CIBW_TEST_COMMAND: |
+            python -m pytest {project}/tests/unit
+      - name: Upload Windows wheels
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels_windows
+          path: ./wheelhouse/*.whl
+          if-no-files-found: error
+
   build_manylinux_wheels:
     name: Wheels (linux-amd64)
     runs-on: ubuntu-latest

.gitignore

@@ -10,4 +10,7 @@ setup.log
 install_KLU_Sundials
 .idaklu
 build
+
+# Extra directories for local work
 workspace
+deploy

vcpkg-configuration.json

@@ -0,0 +1,20 @@
+{
+  "default-registry": {
+    "kind": "builtin",
+    "baseline": ""
+  },
+  "registries": [
+    {
+      "kind": "git",
+      "repository": "https://github.com/pybamm-team/sundials-vcpkg-registry.git",
+      "baseline": "13d432fcf5da8591bb6cb2d46be9d6acf39cd02b",
+      "packages": ["sundials"]
+    },
+    {
+      "kind": "git",
+      "repository": "https://github.com/pybamm-team/casadi-vcpkg-registry.git",
+      "baseline": "1cb93f2fb71be26c874db724940ef8e604ee558e",
+      "packages": ["casadi"]
+    }
+  ]
+}

vcpkg.json

@@ -0,0 +1,12 @@
+{
+  "name": "pybamm",
+  "version-string": "24.9.0",
+  "dependencies": [
+    "casadi",
+    {
+      "name": "sundials",
+      "default-features": false,
+      "features": ["klu"]
+    }
+  ]
+}