Hey @MatthiasGrandl, there is no such thing as current theme for all linux desktop environment. Some may choose to use the GTK default like Gnome, some like KDE have there own configuration and some other DE like i3, sway, hypr don't even have the concept of a current theme.

That said if you want to, it would be ok to open a PR adding a function to lookup the current GTK theme. I would rather have this behind a feature flag.

Also I don't have the time to implement that myself, but PRs are welcome.

Ah yeah that's true. So it seems in onagre you just have it as theme option, instead of trying to determine whatever theme is in use by the environment?

i3, sway, hypr don't even have the concept of a current theme.

well that's not quite true. you usually have some environment configuration that tells GTK/QT apps which theme to use. So I was thinking using GTK crates one could probably figure out what theme to use, with the caveat of pulling in tons of dependencies.

Also I don't have the time to implement that myself, but PRs are welcome.

I'll look into it, although I am not on Linux myself at the moment. I am building Loungy which is mostly on MacOS, but slowly getting ported to Linux :)