Convert action into a single step with group markers

.github/actions/build-android/action.yml

@@ -15,42 +15,58 @@ runs:
   using: composite
 
   steps:
-    # Build Python, and package it into a release artifact.
+    # The steps of a composite action are not clearly divided in the GitHub
+    # UI, so use a single step with ::group:: markers instead.
     - shell: bash
-      run: ./Android/android.py build ${{ inputs.triplet }}
-    - shell: bash
-      run: ./Android/android.py package ${{ inputs.triplet }}
+      run: |
+        echo "::group::Configure build Python"
+        ./Android/android.py configure-build
+        echo "::endgroup::"
+
+        echo "::group::Compile build Python"
+        ./Android/android.py make-build
+        echo "::endgroup::"
+
+        echo "::group::Configure host Python"
+        ./Android/android.py configure-host ${{ inputs.triplet }}
+        echo "::endgroup::"
+
+        echo "::group::Compile host Python"
+        ./Android/android.py make-host ${{ inputs.triplet }}
+        echo "::endgroup::"
+
+        echo "::group::Make release package"
+        ./Android/android.py package ${{ inputs.triplet }}
+        echo "::endgroup::"
+
+        if [ "$RUNNER_OS" = "Linux" ] && [ "$RUNNER_ARCH" = "X64"]; then
+            # https://github.blog/changelog/2024-04-02-github-actions-hardware-accelerated-android-virtualization-now-available/
+            echo "::group::Enable KVM for Android emulator"
+            echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' \
+              | sudo tee /etc/udev/rules.d/99-kvm4all.rules
+            sudo udevadm control --reload-rules
+            sudo udevadm trigger --name-match=kvm
+            echo "::endgroup::"
+
+            echo "::group::Unpack release artifact"
+            mkdir $RUNNER_TEMP/android
+            tar -C $RUNNER_TEMP/android -xf cross-build/${{ inputs.triplet }}/dist/*
+            echo "::endgroup::"
+
+            echo "::group::Tests"
+            # Arguments are similar to --fast-ci, but in single-process mode.
+            $RUNNER_TEMP/android/android.py test --managed maxVersion -v -- \
+              --single-process --fail-env-changed --rerun --slowest --verbose3 \
+              -u "all,-cpu" --timeout=600
+            echo "::endgroup::"
+
+        else
+            echo "Skipping test: GitHub Actions currently only supports the " \
+              "Android emulator on Linux x86_64."
+        fi
+
     - uses: actions/upload-artifact@v4
       with:
         name: ${{ inputs.triplet }}
         path: cross-build/${{ inputs.triplet }}/dist/*
         if-no-files-found: error
-
-    # Currently, GitHub Actions can only run the Android emulator on Linux, so
-    # all the remaining steps are conditional on that.
-
-    # (https://github.blog/changelog/2024-04-02-github-actions-hardware-accelerated-android-virtualization-now-available/).
-    - name: Enable KVM for Android emulator
-      if: runner.os == 'Linux'
-      shell: bash
-      run: |
-        echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' \
-          | sudo tee /etc/udev/rules.d/99-kvm4all.rules
-        sudo udevadm control --reload-rules
-        sudo udevadm trigger --name-match=kvm
-
-    - name: Unpack release artifact
-      if: runner.os == 'Linux'
-      shell: bash
-      run: |
-        mkdir $RUNNER_TEMP/android
-        tar -C $RUNNER_TEMP/android -xf cross-build/${{ inputs.triplet }}/dist/*
-
-    - name: Tests
-      if: runner.os == 'Linux'
-      shell: bash
-      # Arguments are similar to --fast-ci, but in single-process mode.
-      run: |
-        $RUNNER_TEMP/android/android.py test --managed maxVersion -v -- \
-          --single-process --fail-env-changed --rerun --slowest --verbose3 \
-          -u "all,-cpu" --timeout=600