@chakravala: I felt I was completely derailing the other thread so I opened this one:
The machine I’m trying it on right now is on Ubuntu 16.04, the one I tried last night was 17.10.
I tried going to TTY0 or TTY1, logging in and typing
sway. That normally gives some permission error, which I need to fix, but I can do
sudo sway and that gives me “Can’t open Wayland socket”. Weston 1.9 is installed, I need to check if that version is late enough.
I noticed that the Arch linux wiki said that tit should show up in display managers even though it doesn’t officially support them. I looked in mine and, sure enough, there it was. When I tried to open it from there I just got a (very brief) blank screen and then back to the display manager.
I was lazy and just tried getting sway from the PPA, I may try building the latest mater from source later.