ref: 735a7d2932d70b5bf232e2d021e6c0c61e03f61a dir: /lib/fileutil/tmpdir.myr/
use std pkg fileutil = const homedir : (-> byte[:]) ;; const homedir = { match std.getenv("TMPDIR") | `std.Some h: -> d | `std.None: -> "/tmp" ;; }