Help me out: Let's say I wanted to build a desktop that used *only* X11 applications, but still used Wayland to actually talk to the hardware -- a full XWayland setup. I know how to do that, but what I don't know is which compositor is most suited to that use case -- the XWayland server running in a rootful mode, filling the whole screen, with no other Wayland clients running.

So which compositor fits that model best?