//users/tazjin/nixos: warnings from persistence module

trace: evaluation warning: environment.persistence:
    Neither /var/lib/nixos nor any of its parents are
    persisted. This means all users/groups without
    specified uids/gids will have them reassigned on
    reboot.
    The following users are missing a uid:
      fwupd-refresh
      geoclue
      nm-iodine
      nscd
      systemd-oom
    The following groups are missing a gid:
      fwupd-refresh
      geoclue
      msr
      nscd
      polkituser
      resolvconf
      systemd-coredump
      systemd-oom