I noticed xinetd process doesn't get exec'd on launch, exec here so the bash
process doesn't stick around.
Signed-off-by: William Casarin <jb55@jb55.com>
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
