Xmonad core doesn't provide any kind of X11 encapsulation and convenience interface, every single xmonad extension, any piece of configuration, can (and does) d

Xmonad core doesn't provide any kind of X11 encapsulation and convenience interface, every single xmonad extension, any piece of configuration, can (and does) directly use X11, both API and behavior. After all, it's an X11 window manager. You have to rewrite everything.