build windows-11-arm wheels

.github/workflows/build.yml

@@ -109,14 +109,14 @@ jobs:
         with:
           target: ${{ matrix.platform.target }}
           args: --release --out dist
-          sccache: ${{ !startsWith(github.ref, 'refs/tags/') }}
+          sccache: false  # ${{ !startsWith(github.ref, 'refs/tags/') }}
           manylinux: musllinux_1_2
       - name: Build free-threaded wheels
         uses: PyO3/maturin-action@v1
         with:
           target: ${{ matrix.platform.target }}
           args: --release --out dist -i python3.13t
-          sccache: ${{ !startsWith(github.ref, 'refs/tags/') }}
+          sccache: false  # ${{ !startsWith(github.ref, 'refs/tags/') }}
           manylinux: musllinux_1_2
       - name: Upload wheels
         uses: actions/upload-artifact@v4
@@ -161,25 +161,42 @@ jobs:
         platform:
           - runner: windows-latest
             target: x64
+            architecture: x64
           - runner: windows-latest
             target: x86
+            architecture: x86
+          - runner: windows-11-arm
+            target: aarch64
+            architecture: arm64
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
           python-version: 3.x
-          architecture: ${{ matrix.platform.target }}
+          architecture: ${{ matrix.platform.architecture }}
+      - name: Install Rust
+        if: matrix.platform.target == 'aarch64'
+        run: |
+          # rustup is not installed in aarch64
+          if (-not (Get-Command rustup -ErrorAction SilentlyContinue)) {
+              Invoke-WebRequest -Uri "https://static.rust-lang.org/rustup/dist/aarch64-pc-windows-msvc/rustup-init.exe" -OutFile "rustup-init.exe"
+              .\rustup-init.exe --default-toolchain stable -y
+              Remove-Item "rustup-init.exe"
+              "$env:USERPROFILE/.cargo/bin" | Out-File -FilePath "$env:GITHUB_PATH" -Append
+          }
       - name: Build wheels
         uses: PyO3/maturin-action@v1
         with:
           target: ${{ matrix.platform.target }}
           args: --release --out dist
           sccache: ${{ !startsWith(github.ref, 'refs/tags/') }}
-      - uses: actions/setup-python@v5
+      - if: matrix.platform.target != 'aarch64' # no 3.13t available for windows arm64
+        uses: actions/setup-python@v5
         with:
           python-version: '3.13t'
           architecture: ${{ matrix.platform.target }}
-      - name: Build free-threaded wheels
+      - if: matrix.platform.target != 'aarch64'
+        name: Build free-threaded wheels
         uses: PyO3/maturin-action@v1
         with:
           target: ${{ matrix.platform.target }}
@@ -191,7 +208,6 @@ jobs:
           name: wheels-windows-${{ matrix.platform.target }}
           path: dist
       - name: pytest
-        if: ${{ !startsWith(matrix.platform.target, 'aarch64') }}
         shell: bash
         run: |
           set -e