Add arm64 windows builds and tests (#4814)

Co-authored-by: cobalt <[email protected]>

Author: finnagin

.github/workflows/pypi_upload.yml

@@ -62,7 +62,9 @@ jobs:
             && cibuildwheel --print-build-identifiers --platform macos \
             | pyp 'json.dumps({"only": x, "os": "macos-latest"})' \
             && cibuildwheel --print-build-identifiers --platform windows \
-            | pyp 'json.dumps({"only": x, "os": "windows-latest"})'
+            | pyp 'json.dumps({"only": x, "os": "windows-latest"})' \
+            && cibuildwheel --print-build-identifiers --platform windows --archs ARM64 \
+            | pyp 'json.dumps({"only": x, "os": "windows-11-arm"})'
           } | pyp 'json.dumps(list(map(json.loads, lines)))' > /tmp/matrix
         env:
           CIBW_ARCHS_LINUX: x86_64

.github/workflows/release_tests.yml

@@ -26,7 +26,7 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.13"]
-        os: [macOS-latest, ubuntu-latest, windows-latest]
+        os: [macOS-latest, ubuntu-latest, windows-latest, windows-11-arm]
 
     steps:
       - uses: actions/checkout@v5

.github/workflows/test.yml

@@ -31,8 +31,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12.4", "3.13", "3.14", "pypy-3.9"]
-        os: [ubuntu-latest, macOS-latest, windows-latest]
+        python-version: ["3.9", "3.10", "3.11", "3.12.10", "3.13", "3.14", "pypy-3.9"]
+        os: [ubuntu-latest, macOS-latest, windows-latest, windows-11-arm]
+        exclude:
+          # setup-python only supports 3.11+ on arm64 windows
+          - os: windows-11-arm
+            python-version: "3.9"
+          - os: windows-11-arm
+            python-version: "3.10"
+          - os: windows-11-arm
+            python-version: "pypy-3.9"
 
     steps:
       - uses: actions/checkout@v5

.github/workflows/upload_binary.yml

@@ -13,12 +13,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-2025, ubuntu-22.04, ubuntu-22.04-arm, macos-latest]
+        os: [windows-2025, windows-11-arm, ubuntu-22.04, ubuntu-22.04-arm, macos-latest]
         include:
           - os: windows-2025
             pathsep: ";"
             asset_name: black_windows.exe
             executable_mime: "application/vnd.microsoft.portable-executable"
+          - os: windows-11-arm
+            pathsep: ";"
+            asset_name: black_windows-arm.exe
+            executable_mime: "application/vnd.microsoft.portable-executable"
           - os: ubuntu-22.04
             pathsep: ":"
             asset_name: black_linux
@@ -38,7 +42,7 @@ jobs:
       - name: Set up latest Python
         uses: actions/setup-python@v6
         with:
-          python-version: "3.12.4"
+          python-version: "3.13"
 
       - name: Install Black and PyInstaller
         run: |

CHANGES.md

@@ -80,6 +80,7 @@
 ### Packaging
 
 - Releases now include arm64 Linux binaries (#4773)
+- Releases now include arm64 Windows binaries and wheels (#4814)
 
 ### Output