Update dependencies on "x-window-system"

[pierre]

With the rise of wayland, and the coming vulkan, "x-window-system" as a dependency is not accurate enough. This ticket is for following progress in replacing this dependency with a more accurate one. Some instruction changes may be needed too to adapt to wayland only builds.

[pierre]

List of packages with dependency on x-window-system as of November 20th, 2021

[pierre]

Note that we may want to look at dependencies on "xorg-server" too. mutter has xorg-server (with Xwayland): this one should be changed to xwayland (and xorg-server moved to optional). I guess others should be changed to "xorg-server or xwayland"...

[pierre]

Maybe we should change the part title X + Window and Display Managers to Graphical Components in x/x.xml. And the chapter title X Window System to Graphical Environments in x/installing/installing.xml. Then X Libraries could become Graphical Environment Libraries in x/lib/lib.xml. By adequately changing the xreflabel's, the refs could be kept the same.

[Bruce Dubbs]

I'm OK with the title/xref name changes. Will that be enough to close this ticket?

[pierre]

Not quite, because I think there are some text changes needed too (in the introduction to xorg at least). I'll create a branch so that everybody can comment. But changing the titles and xreflabels will simplify a lot.

We'll maybe need another ticket for separating dependencies on xwayland and on xorg-server.

[pierre]

Created branch plabs/graphenv