That is a non-argument. I was clearly not speaking about the bare minimum, but about required in a practical sense. Have you looked at the Go gtk bindings? If not, do so! The Go bindings are way nicer than the original C interface, Gtk was designed for. Gtk fundamentally has an object-oriented design. As it is based on pure C, it has its own thin object layer. However the "object oriented" features of Go blend much better with that design than the native C. Because you can build type hierarchies of structures and each structure type has methods. I very much regret that Go hasn't made bigger headway into the UI space, but it is a chicken and and egg problem. You need UI bindings to write UI applications. In general, there isn't enough development happening, especially for Linux. And alas, too many new developments get lured into writing electron apps. And there are of course a lot of QT apps.

But in my eyes, Go+Gtk should be a great combination for the desktop, as the bindings have a nice API and Go is really approachable for newcomers - it was one of the design criteria to not have too high learning efforts. If anything, there could be more documentation on how to use Gtk. And so far, my Go+Gtk programs can be easily recompiled and run on the Mac :)