This gets us back to pre-2.23 behavior of this primop.
Done by inlining the code of `nix::dirOf` from 2.2-maintenance.
(cherry picked from commit a33fccf55a)
This gets us back to pre-2.23 behavior of this primop.
Done by inlining the code of `nix::dirOf` from 2.2-maintenance.
(cherry picked from commit a33fccf55a)