That packaging error makes liblzma being pulled in at installation (well, it's probably already there if pid 1 requires it). But it will not make the sshd binar

That packaging error makes liblzma being pulled in at installation (well, it's probably already there if pid 1 requires it). But it will not make the sshd binary use it. So I think the original claim stands: Without patching sshd for the notification it will not use liblzma. Disclaimer: I did not search for all possible occurrences of dlopen().