90a3908ec3
Previously, we were storing the leader pid in a runtime file and signalled SIGRTMIN+4 manually. In systemd 219, the `machinectl poweroff` command was introduced, which does that for us.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.