I had to copy in and redefine the ‘stumpwm::maximize-window’ function from the
‘swm-gaps’ package because for some reason ‘(frame-width ...)’ returns a ratio
on my machine (is it because high-dpi, or ultra-wide? I don't know) and not an
integer, which screws up the ‘(setf (xlib:drawable-width ...) ...)’ call.
