This looks like this only traces the original Unix and the BSD lines. I assume that's because that's what the sources are available for. It would be cool to see

This looks like this only traces the original Unix and the BSD lines. I assume that's because that's what the sources are available for. It would be cool to see what came from the SysV side of things over time, but, one would have to get the sources for a SysV-derived Unix. I'd think Illumos would count, having come from Solaris. But that doesn't help much either, does it, since Illumos is a modern Unix, and not a historic version?