[Development] CI testing on XWayland only, not real X11

[Shawn Rutledge]

> On Aug 19, 2025, at 04:03, Kevin Kofler via Development <development at qt-project.org> wrote:
> 
> Thiago Macieira wrote:
>> should we move our CI to test desktops only on native Wayland and through
>> XWayland?
> 
> No.
> 
> The point of the X11 (xcb) backend is to be used with X11, not with a 
> compatibility layer on Wayland. (For that, there is the native Wayland 
> backend.) And (real) X11 is not going to go away any time soon. There is 
> also a new upstream that does new X11 feature releases (XLibre/X11Libre).

I keep using real X11 mostly.  I doubt that it will become impossible anytime soon. I’d be very disappointed if it does, and suspect that many others would be too: therefore it doesn’t seem likely.

I think CI needs to test all 3 ways; it will tend to happen when we have a suitable assortment of distros.  But so far we don’t have enough stability when running the existing tests with the Wayland plugin; that continues to need work.