CI: Add Flatpak aarch64 build

Author: tytan652

.github/workflows/main.yml

@@ -71,6 +71,7 @@ jobs:
       IS_PULL_REQUEST: ${{ github.event_name == 'pull_request' }}
     outputs:
       create_artifacts: ${{ steps.config.outputs.create_artifacts }}
+      flatpak_matrix: ${{ steps.config.outputs.flatpak_matrix }}
       cache_date: ${{ steps.config.outputs.cache_date }}
     steps:
       - name: 'Configure Build Jobs'
@@ -82,8 +83,15 @@ jobs:
             else
               echo 'create_artifacts=false' >> $GITHUB_OUTPUT
             fi
+
+            if test -n "$(curl -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" -s "${{ github.event.pull_request.url }}" | jq -e '.labels[] | select(.name == "Flatpak aarch64")')"; then
+              echo 'flatpak_matrix=["x86_64", "aarch64"]' >> $GITHUB_OUTPUT
+            else
+              echo 'flatpak_matrix=["x86_64"]' >> $GITHUB_OUTPUT
+            fi
           else
             echo 'create_artifacts=true' >> $GITHUB_OUTPUT
+            echo 'flatpak_matrix=["x86_64"]' >> $GITHUB_OUTPUT
           fi
           echo "cache_date=$(date +"%Y-%m-%d")" >> $GITHUB_OUTPUT
 
@@ -364,8 +372,8 @@ jobs:
           name: 'obs-studio-windows-${{ matrix.arch }}-${{ steps.setup.outputs.commitHash }}'
           path: '${{ env.FILE_NAME }}'
 
-  linux_package:
-    name: '02 - Flatpak'
+  flatpak_deps_build:
+    name: '02 - Flatpak Dependencies'
     runs-on: [ubuntu-latest]
     needs: [config, clang_check]
     defaults:
@@ -374,6 +382,9 @@ jobs:
     container:
       image: bilelmoussaoui/flatpak-github-actions:kde-6.4
       options: --privileged
+    strategy:
+      matrix:
+        arch: ${{ fromJSON(needs.config.outputs.flatpak_matrix) }}
     steps:
 
       - name: 'Checkout'
@@ -384,18 +395,79 @@ jobs:
 
       - name: 'Setup build environment'
         run: |
+          if [[ "${{ matrix.arch }}" != "x86_64" ]]; then
+            dnf install -y -q jq docker
+          else
+            dnf install -y -q jq
+          fi
+
           git config --global --add safe.directory $GITHUB_WORKSPACE
-          echo "OBS_GIT_BRANCH=$(git rev-parse --abbrev-ref HEAD)" >> $GITHUB_ENV
+
+          echo "MANIFEST_HASH=$(cat CI/flatpak/com.obsproject.Studio.json | sha256sum | cut -d " " -f 1)" >> $GITHUB_ENV
+
+      - name: Setup QEMU
+        if: ${{ matrix.arch != 'x86_64' }}
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: arm64
+
+      - name: 'Shorten Manifest'
+        run: |
+          jq 'del(.modules[-2:]) | .modules += [{"name": "obs", "buildsystem": "simple", "build-commands": ["cp -a /usr/bin/ls /app/bin/obs"]}]' CI/flatpak/com.obsproject.Studio.json > tmp.json
+          mv tmp.json CI/flatpak/com.obsproject.Studio.json
+
+      - name: Build Flatpak Manifest
+        uses: flatpak/flatpak-github-actions/flatpak-builder@v5
+        with:
+          build-bundle: false
+          manifest-path: CI/flatpak/com.obsproject.Studio.json
+          cache-key: flatpak-builder-${{ env.MANIFEST_HASH }}
+          arch: ${{ matrix.arch }}
+
+  flatpak_build:
+    name: '03 - Flatpak'
+    runs-on: [ubuntu-latest]
+    needs: [config, flatpak_deps_build]
+    defaults:
+      run:
+        shell: bash
+    container:
+      image: bilelmoussaoui/flatpak-github-actions:kde-6.4
+      options: --privileged
+    strategy:
+      matrix:
+        arch: ${{ fromJSON(needs.config.outputs.flatpak_matrix) }}
+    steps:
+
+      - name: 'Checkout'
+        uses: actions/checkout@v3
+        with:
+          submodules: 'recursive'
+          fetch-depth: 0
+
+      - name: 'Setup build environment'
+        run: |
+          [[ "${{ matrix.arch }}" != "x86_64" ]] && dnf install -y -q docker
+
+          git config --global --add safe.directory $GITHUB_WORKSPACE
+
           echo "OBS_GIT_HASH=$(git rev-parse --short=9 HEAD)" >> $GITHUB_ENV
-          echo "OBS_GIT_TAG=$(git describe --tags --abbrev=0)" >> $GITHUB_ENV
+          echo "MANIFEST_HASH=$(cat CI/flatpak/com.obsproject.Studio.json | sha256sum | cut -d " " -f 1)" >> $GITHUB_ENV
+
+      - name: Setup QEMU
+        if: ${{ matrix.arch != 'x86_64' }}
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: arm64
 
       - name: Build Flatpak Manifest
         uses: flatpak/flatpak-github-actions/flatpak-builder@v5
         with:
           build-bundle: ${{ fromJSON(needs.config.outputs.create_artifacts) }}
           bundle: obs-studio-flatpak-${{ env.OBS_GIT_HASH }}.flatpak
           manifest-path: CI/flatpak/com.obsproject.Studio.json
-          cache-key: flatpak-builder-${{ hashFiles('CI/flatpak/com.obsproject.Studio.json') }}
+          cache-key: flatpak-builder-${{ env.MANIFEST_HASH }}
+          arch: ${{ matrix.arch }}
 
   windows_package:
     name: '03 - Windows Installer'