ColorPicker VS libui-ng

Looking at the code it uses color dialog from Gtk or wx python gui libraries on Linux, maybe those failed to install, but it should give you an exception when you're trying to run it.

I remember a few years ago, a few really cool cross-platform UI libraries were starting to emerge such as libui [0] that got me excited. I've kind of lost track of them since then (libui itself went dormant for a while before this fork) so I am not sure how mature/useful they are now, but the potential for writing native desktop UIs in basically any language seemed like an absolute dream. Perhaps it's feasible for very basic things?

[0] https://github.com/libui-ng/libui-ng

Linux/Windows/MacOS: https://github.com/libui-ng/libui-ng

There are a few libraries for GUI (for example, capy), and you can easily use any C libraries out there with @cImport (like libui), but it is still a work in progress.

It exists, at least for simple use cases. You are looking for libui-ng. wxWidgets of course also exists, but it is less a basic native wrapper than it is a complete toolkit emulating what doesn't exist where as libui seems to be more lowest common denominator (not sure but I think there might be a small amount of emulation, but not like wx I don't think).

There's now libui-ng [1] which seems to be active and already has many wrappers

[1] https://libui-ng.github.io/libui-ng/