I would like to use the Colemak keyboard layout. In previous versions of Ubuntu (16, 17), it has been available as an input source. I just installed 18.04 LTS (into VMWare player) and Colemak is not available. I would have expected it to look exactly like this blog post, which indicates it was there for at least one user. But I only have a handful of English sources and "Other", for which the only Colemak options are Filipino and Norwegian layouts!
I'm working around for now with
setxkbmap us -variant colemak, but that doesn't persist across logins.
(For bonus points, how I would I also change the default keyboard layout for the login screen? Currently I need to type my password in QWERTY...)