load XWayland on-demand

Advantages:

• faster load/boot
• smaller memory footprint

I'd like to propose loading XWayland on-demand as mutter does [1]. Since sooner or later, almost all aplications will be "converted" to Wayland platform, it make sense in long-term.

Since this effort requires latest (not yet released) Xorg server, which should come soon after fixing CI and moving to new Xorg release system, would be nice to be prepared.

In case you'd like to put extra effort, these two patches [2] [3] must be applied on top of Xorg, and [4] for PulseAudio codebase.

[1] https://gitlab.gnome.org/GNOME/mutter/merge_requests/709/

[2] https://gitlab.freedesktop.org/xorg/xserver/merge_requests/203

[3] https://gitlab.freedesktop.org/xorg/xserver/merge_requests/236

[4] https://gitlab.freedesktop.org/pulseaudio/pulseaudio/merge_requests/109

changed the description

moved from phosh#200 (moved)

we're doing this already

https://source.puri.sm/Librem5/phoc/blob/master/src/desktop.c#L452

and the default is to lazy load.

closed

@guido.gunther maybe I'm hitting some bug, but I have Xwayland process running right after QEMU start (incl. terminal start), maybe something triggers X support right after boot?

@david.boddie Apps_Issues#42 - patches to fix this are welcome.

@okias See the above comment in this issue. :)