ref: 78da203b42b5084a7664e8773f418a4730184d53 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" }