Also, Go-QML and gotk3 are probably the only two golang non-web, traditional "widget" type UI projects worth exploring if you want something to just build apps and not spend a ton of time hacking the library itself to do what you want.
There may be some decent ones I'm not aware of but all the ones I've looked at other than Go-QML and gotk3 are some combination of abandoned, not yet ready for prime-time and/or horribly flawed at some basic level of their design.