brew prefix printout

.github/workflows/build_test_artifacts.yml

@@ -62,6 +62,7 @@ jobs:
                 run: |
                     if [ "${{ matrix.name }}" == "macOS" ]; then
                         brew install osxutils jack liblo
+                        echo "brew prefix: $(brew --prefix)"
                     elif [ "${{ matrix.name }}" == "Linux" ]; then
                         sudo apt-get update && sudo apt install jackd2 libjack-jackd2-dev liblo-dev
                     # elif [ "${{ matrix.name }}" == "Windows" ]; then