Merge pull request #269983 from nikstur/stc-tmpfiles

- Forget about the failed state of units (`systemctl reset-failed`)

- Reload systemd (`systemctl daemon-reload`)

- Reload systemd user instances (`systemctl --user daemon-reload`)

- Set up tmpfiles (`systemd-tmpfiles --create`)

- Reload units (`systemctl reload`)

- Restart units (`systemctl restart`)

- Start units (`systemctl start`)

close($list_active_users) || die("Unable to close the file handle to loginctl");

# Set the new tmpfiles

print STDERR "setting up tmpfiles\n";

system("$new_systemd/bin/systemd-tmpfiles", "--create", "--remove", "--exclude-prefix=/dev") == 0 or $res = 3;

# Before reloading we need to ensure that the units are still active. They may have been

# deactivated because one of their requirements got stopped. If they are inactive

# but should have been reloaded, the user probably expects them to be started.

      "systemd-tmpfiles-setup.service"

    ];

    # Allow systemd-tmpfiles to be restarted by switch-to-configuration.

    systemd.services."systemd-tmpfiles-setup" = {

      unitConfig.RefuseManualStop = "no";

      restartTriggers = [ "${config.environment.etc."tmpfiles.d".source}" ];

    };

    environment.etc = {

      "tmpfiles.d".source = (pkgs.symlinkJoin {

        name = "tmpfiles.d";