nixpkgs/nixos/tests/systemd-user-linger.nix

import ./make-test-python.nix (
  { lib, ... }:
  {
    name = "systemd-user-linger";

    nodes.machine =
      { ... }:
      {
        users.users = {
          alice = {
            isNormalUser = true;
            linger = true;
            uid = 1000;
          };

          bob = {
            isNormalUser = true;
            linger = false;
            uid = 10001;
          };
        };
      };

    testScript =
      { ... }:
      ''
        machine.wait_for_file("/var/lib/systemd/linger/alice")
        machine.succeed("systemctl status user-1000.slice")

        machine.fail("test -e /var/lib/systemd/linger/bob")
        machine.fail("systemctl status user-1001.slice")

        with subtest("missing users have linger purged"):
            machine.succeed("touch /var/lib/systemd/linger/missing")
            machine.systemctl("restart linger-users")
            machine.succeed("test ! -e /var/lib/systemd/linger/missing")
      '';
  }
)