Hm, AROS does have "installer", evindently.
http://kolla.no/aros-installer.jpg
If you're satisfied with it being able only to run the provided demo (and even then, it sometimes crashes...), then yes. Really, I would guess it's only about 50% finished and still needs a lot of work. But perhaps you were kidding?
Until some developer is interested in finishing it, I would advise people who need those functionalities to use a shell script of course: it is quite stable and evolved on ABIv1 and ABIv0-on-trunk, and so is able to make many tests on installed files and the system in general, and even allows quite comfortable interactions with the user.
