nix-configuration/modules/services/systemd.nix

# Configure systemD
_: {
  services = {
    # Allow systemd user services to keep running after the user has logged out
    logind.killUserProcesses = false;
  };

  # Reduce systemd logout time to 30s
  environment.etc = {
    "systemd/system.conf.d/10-reduce-logout-wait-time.conf" = {
      text = ''
        [Manager]
        DefaultTimeoutStopSec=30s
      '';
    };
  };
}