Very promising!
Only a little problem: my XBox One controller (plugged via USB) doesn't seem to work properly on the macOS RubyChest demo. I can press/keep A to skip the logo, but at the title screen it doesn't respond anymore. It's written "press A", but pressing A (or any other button) does nothing.
The controller works correctly with most other macOS games I tried (Celeste, Owlboy,...).