The System 7 that runs on A/UX is actually a unix process running on top of the A/UX kernel (which exposes the necessary Macintosh Toolbox features to run the specific version of System 7).
Which led to Copland, which didn't work out, and so led to the NeXT acquisition.
> Which led to Copland, which didn't work out, and so led to the NeXT acquisition.
I remember the brief life of MkLinux. It brought a number of PoweMacs we had stacked in corners back to life as Unix workstations on sysadmin and developer desks (in 1998 or so).
I never used MkLinux myself, but I am happy to hear it was useful to someone...