NixOS/hydra — pull request #152 by aszlig (2014-04-10 18:16:13+00:00)
Title: hydra-module: Don't rely on su being available in shadow.

The `su` binary is now in a separate output of the `shadow` package and isn't included in the main output path anymore.

But instead of changing the call to use `pkgs.su`, we're now entirely dropping the dependency because systemd is already able to execute processes under a specific user by itself.