On: What's in a Build Tool?

[microtonal]

The point is that it is not a clone of UNIX, it's one of the evolutionary strains of UNIX. You probably won't find substantial amounts of AT&T Research UNIX in Solaris, but it's still UNIX. The lineages of BSD and Solaris can be traced back directly to AT&T Research UNIX.

[abiox → microtonal]

it seems to me that, today, this seems perhaps more a discussion of "historical context" than material reality.

after all the evolution and adaptation that's gone on over the last couple decades i wonder if saying "bsd is unix" is any more than a notional thing.

is the linux kernel materially and substantially different from any current bsd kernels?