@yosh @eniko That's a helpful taxonomy, yeah. I'm guessing that by thr same logic, autoconf and friends are meta–build systems? I'm also curious where task runners like just or do-runner (my own attempt) fit into the picture — basically tools for keeping collections of tiny shell scripts.
I ask because make is a weird one to me in that it's both a build system and a task runner (thanks to .PHONY).