I am running the Gnome desktop with wayland. Today I decided to try the new Rust Xilem GUI, which is currently under strong development and should become very popular soon, see https://github.com/linebender/xilem When running the examples, I get the following error messages: WARN winit::Window::set_cursor: Failed to set cursor to Default The reason is described in https://github.com/bevyengine/bevy/issues/4768 and https://gitlab.alpinelinux.org/alpine/aports/-/issues/13901 Seems to occur also when the famous Rust Bevy game engine is used. Actually it is related to Rust winit, a library to provide a primitive window on the screen. A possible fix is to define the environment variable XCURSOR_THEME as in XCURSOR_THEME=Adwaita cargo run --example calc I am not sure if this is something which Gentoo can fix, but a fix would be very welcome.