Enable Windows on Arm GitHub runners.

Author: diegorusso

.github/workflows/build.yml

@@ -164,10 +164,10 @@ jobs:
  - false
  - true
 include:
- - os: windows-latest # FIXME(diegorusso): change to os: windows-aarch64
+ - os: windows-aarch64
 arch: arm64
 free-threading: false
- - os: windows-latest # FIXME(diegorusso): change to os: windows-aarch64
+ - os: windows-aarch64
 arch: arm64
 free-threading: true
  - os: windows-latest
@@ -193,6 +193,7 @@ jobs:
  - arm64
 uses: ./.github/workflows/reusable-windows-msi.yml
 with:
+os: ${{matrix.os }}
 arch: ${{matrix.arch }}
 
 build-macos:

.github/workflows/jit.yml

@@ -74,7 +74,7 @@ jobs:
 runner: windows-latest
  - target: aarch64-pc-windows-msvc/msvc
 architecture: ARM64
-runner: windows-latest
+runner: windows-aarch64
  - target: x86_64-apple-darwin/clang
 architecture: x86_64
 runner: macos-13
@@ -96,19 +96,11 @@ jobs:
 python-version: '3.11'
 
  - name: Native Windows
-if: runner.os == 'Windows' && matrix.architecture != 'ARM64'
 run: |
  choco install llvm --allow-downgrade --no-progress --version ${{matrix.llvm }}.1.0
  ./PCbuild/build.bat --experimental-jit ${{matrix.debug && '-d' || ''}} -p ${{matrix.architecture }}
  ./PCbuild/rt.bat ${{matrix.debug && '-d' || ''}} -p ${{matrix.architecture }} -q --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
-# No tests (yet):
- - name: Emulated Windows
-if: runner.os == 'Windows' && matrix.architecture == 'ARM64'
-run: |
- choco install llvm --allow-downgrade --no-progress --version ${{matrix.llvm }}.1.0
- ./PCbuild/build.bat --experimental-jit ${{matrix.debug && '-d' || ''}} -p ${{matrix.architecture }}
-
 # The `find` line is required as a result of https://github.com/actions/runner-images/issues/9966.
 # This is a bug in the macOS runner image where the pre-installed Python is installed in the same
 # directory as the Homebrew Python, which causes the build to fail for macos-13. This line removes

.github/workflows/reusable-windows-msi.yml

@@ -3,6 +3,10 @@ name: Reusable Windows MSI
 on:
 workflow_call:
 inputs:
+os:
+description: OS to run on
+required: true
+type: string
 arch:
 description: CPU architecture
 required: true
@@ -17,7 +21,7 @@ env:
 jobs:
 build:
 name: installer for ${{inputs.arch }}
-runs-on: windows-latest
+runs-on: ${{inputs.os }}
 timeout-minutes: 60
 env:
 ARCH: ${{inputs.arch }}

.github/workflows/reusable-windows.yml

@@ -24,7 +24,7 @@ env:
 
 jobs:
 build:
-name: ${{inputs.arch == 'arm64' && 'build' || 'build and test' }} (${{inputs.arch }})
+name: Build and test (${{inputs.arch }})
 runs-on: ${{inputs.os }}
 timeout-minutes: 60
 env:
@@ -43,11 +43,9 @@ jobs:
  -p "${ARCH}"
  ${{fromJSON(inputs.free-threading) && '--disable-gil' || ''}}
 shell: bash
- - name: Display build info # FIXME(diegorusso): remove the `if`
-if: inputs.arch != 'arm64'
+ - name: Display build info
 run: .\\python.bat -m test.pythoninfo
- - name: Tests # FIXME(diegorusso): remove the `if`
-if: inputs.arch != 'arm64'
+ - name: Tests
 run: >-
  .\\PCbuild\\rt.bat
  -p "${ARCH}"