ref: 52eca667bbd1cf5a929d3f2352c3c1ee8e91625d
dir: /lib/thread/spawn+netbsd.myr/
use std
pkg thread =
	type tid = uint64
	const spawn : (fn : (-> void) -> std.result(tid, byte[:]))
;;
const spawn = {fn
	std.die("unimplemented\n")
	-> `std.Err "fuck"
}