A Unix v7, "the last true Unix", port to x86

Huh, I suppose I'm one of just a few with this particular nostalgia (beyond my years it must be added). Oh well. I'm finding this quite useful for following along with "The Unix Programming Environment" since it was written at about the same time as v7. Of course there's no major problems with using a modern Unix to follow along with the examples in that book, (apart from the one where you octal dump a directory) but you don't get the feeling of the environment the book was written in the context of.

I'm not sure how old this port is but if it is recent, it won't be the first.

Xenix, Microsoft's(!) was a Unix V7 clone. In fact there are still Microsoft Copyright Notices in the Sys V R 4 files. It was first sold to SCO who later bought Novell's sales rights to the original Unix. They in their own turn were bought out by Caldera who then renamed themselves The SCO Group and infamously sued IBM.

One of SCOG's problems was that as Caldera they had themselves open-sourced much of the Unix code earlier.

Another Unix V7 'clone', more or less, was released by the Mark Williams company in the late 80's and early 90's. It was the first really cheap unix for the x86 ($99 USD) when AT&T Unix cost about $1200 USD. I cut my Unix teeth on it and I still have disk-images of the floppies required for installation. It was destroyed by that young upstart Linux, whose open-source developers were able to outpace the Mark Williams Company's much smaller team of programmers.

Caldera? Hmmmm. Is this safe or is this entrapment after they find this on Linux developers' machines?