Testing out Sway (Wayland) on an existing installation

When installing r4.3-rc2 in a VM today I noticed that it’s possible to additionally add Wayland (Sway) support via a switch in the installer. What would be the process to do that on an existing Qubes r4.3 installation? Is setting up sys-gui mandatory?

Regretfully it won’t work. It is/was one of the options of original Ananconda installer. I am not 100% certain if there is already an open issue to address this. But for sure, I have seen it being discussed somewhere.