message: Enable Metal for Mac CI builds
diff: @@ -299,7 +299,7 @@ jobs:
  run: |
  mkdir build
  pushd build
  - cmake -DCMAKE_BUILD_TYPE=${{ matrix.type }} ..
  + cmake -DENABLE_METAL=On -DCMAKE_BUILD_TYPE=${{ matrix.type }} ..
  make -j2
  popd
  - if: matrix.type == 'Debug'
  