Why xwayland is not named Xwayland.tcz?
Because I don't like capital letters
How many composer are in repo?
Use the apps gui tags function to search on "compositor"
I tried weston and xwayland and it didn't work.
If you google on "weston configuration" you will find details on weston.ini
..basically you need to include this in your weston.ini
[core]
xwayland=true
[xwayland]
path=/usr/local/bin/Xwayland
How to run wayland? Do I need configured Xorg?
As mentioned previously, you need a wayland compositor, if you look in the info file of the compositor, it will explain how to run it. Wayland compositors do not need to use Xorg.