New review comment by FollieHiyuki on void-packages repository

https://github.com/void-linux/void-packages/pull/29962#discussion_r622654399

Comment:
Yeah right `wlroots` and `mpv` don't seem to be explicitly needed in depends.

But it uses xdg-output-unstable-v1 and wlr-layer-shell-unstable-v1 so shouldn't we specify `wlroots` in depends as a safe guard (since it only works in wlroots based compositors)?