I just compiled unison for the N900, basically untested, so no warranties and all... just a unison binary, text-ui only: Code: ~ user@StrankN900 $ unison -version unison version 2.38.5 (Note the version number, you need a unison with 2.38.x on the other end!)
~ user@StrankN900 $ unison -version unison version 2.38.5