Comment 32 for bug 867424

(In reply to Bryan Quigley from comment #20)
> I'm guessing libsm/libice won't work on wayland?
>
> Looks like we might be able to get shutdown (but not logout) support from
> systemd. -https://wiki.freedesktop.org/www/Software/systemd/inhibit/

Well, the ICE protocol was deliberately independent of the X11 protocol so I guess classical session managers could still work with wayland. In practice, I don't know.

A systemd-style logout inhibit would let us delay logout until firefox has saved everything it needs to. But it doesn't provide a way to save restore the position and desktop of each window, as libsm/xsmp does. Nor does it restore applications on the next login or let word-processor style apps restore with the currently-opened file.