This seems like a good idea in general and will at least make it easier to get screen sharing to work (but still requires a proper NixOS configuration including xdg-desktop-portal-wlr). Note: It isn't necessary to set XDG_SESSION_TYPE=wayland as wlroots already takes care of it (currently at least for the logind and libseat session backends, the next wlroots release will require libseat): https://github.com/swaywm/wlroots/blob/4839664a9209e2829f3f90006065229b5c17007c/backend/session/session.c#L80