I have found a way to do this.

Create (if necessary) a `~/.profile` file and add the following:

    WAY=$(ps -aux | head -n -1 | grep "/usr/bin/gnome-shell --wayland")
    
    if [ -z "$WAY" ]; then
        echo X11
    else
        export GDK_BACKEND=wayland
        export CLUTTER_BACKEND=wayland
    fi

Logout and then login in your favorite session (either X or Wayland).
By using looking glass you can check if your application is actually running on Wayland. See [this][1].


  [1]: https://unix.stackexchange.com/questions/233459/real-gnome-wayland-session