Abstract platform-specific workflows into separate files

.github/workflows/windows.yml

@@ -0,0 +1,62 @@
+name: Windows workflow
+
+on:
+  workflow_call:
+    inputs:
+      layout:
+        required: true
+        type: string
+  workflow_dispatch:
+    inputs:
+      layout:
+        required: true
+        type: choice
+        options: ["2013", "2020"]
+  push:
+    branches: ["try-windows"]
+
+env:
+  RUST_BACKTRACE: 1
+  SHELL: /bin/bash
+  LAYOUT: "${{ contains(inputs.layout, '2020') && 'layout-2020' || 'layout-2013' }}"
+
+jobs:
+  build-win:
+    name: Build
+    runs-on: windows-2022
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 2
+      - name: Copy to C drive
+        run: cp D:\a C:\ -Recurse
+      - name: Bootstrap
+        working-directory: "C:\\a\\${{ github.event.repository.name }}\\${{ github.event.repository.name }}"
+        run: |
+          python -m pip install --upgrade pip virtualenv
+          python mach fetch
+      - name: Release build
+        working-directory: "C:\\a\\${{ github.event.repository.name }}\\${{ github.event.repository.name }}"
+        run: python mach build --release --media-stack=dummy --with-${{ env.LAYOUT }}
+      - name: Unit tests
+        working-directory: "C:\\a\\${{ github.event.repository.name }}\\${{ github.event.repository.name }}"
+        run: python mach test-unit --release --with-${{ env.LAYOUT }}
+      - name: Smoketest
+        working-directory: "C:\\a\\${{ github.event.repository.name }}\\${{ github.event.repository.name }}"
+        run: python mach smoketest --angle
+
+  build_result:
+    name: homu build finished
+    runs-on: ubuntu-latest
+    if: always()
+    # needs all build to detect cancellation
+    needs:
+      - "build-win"
+
+    steps:
+      - name: Mark the job as successful
+        run: exit 0
+        if: ${{ !contains(join(needs.*.result, ','), 'failure') && !contains(join(needs.*.result, ','), 'cancelled') }}
+      - name: Mark the job as unsuccessful
+        run: exit 1
+        if: contains(join(needs.*.result, ','), 'failure') || contains(join(needs.*.result, ','), 'cancelled')