Well, kinda. There's no system check, so a system arch=x86-64 os=linux derivation builds on NetBSD, using NetBSD, but produces a hash mismatch.
I'll fix that at some point, but... right now, I don't care about such things, and am willing to leave hidden footguns all over the place. I want to validate ideas first! Once they're validated, I'll throw the entire codebase out and reimplement it well.
Works fine on NetBSD too!