Somebody definitely had the full source code back in 1995 when I tried my best to figure out who to contact.
While I succeeded in making contact with the right person, it quickly transpired that the full source code was subject to proof of having a valid Novell license. Needless to say, no such license was available at ESCOM at the time and an opportunity was lost, perhaps permanently.
That said, I would be mighty surprised if the full AT&T SVR4 source code which was the foundation for Amiga Unix has never been accidentally/intentionally leaked. Could be a fun summer project to rebuild Amiga Unix from scratch ;-)
Not only that, isn't Commodore now owned/run by Peri Fractic / Christian Simpson? It seems if anyone is going to be open to these kinds of retro projects, it's going to be the new Commodore ownership.
Yes and no. Cloanto isn't like Bill McEwen's Amiga Inc., but it's litigious towards Hyperion and several others. They're not good people. Another greedy corporation milking the corpse of Commodore. Absolute... jerks. Trying to work on my language, but I'd love to call them worse.
I am certain someone have the full source code somewhere, I just hope that they eventually say "f--k it, it has been 36 years, let the world have it".