Thanks. I'll take a look. I've tried Relm 3, Relm 4, and gtk-rs, but they all use Linux only in their CI. I just can't work out what to install and what env vars I need. I didn't the official GTK docs all that helpful on the topic. I'm keen to see how to package the whole thing up, too. Ideally, I could just put the necessary libraries in a directory with the executable.