{ ... }: {
  filesystems."/mnt/nas" = {
    device = "nixserver:/share";
    fsType = "nfs";
    options = [
      "nfsvers=4.2"
      "noauto"
      "x-systemd.automount"
      "x-systemd.idle-timeout=600"
      "_netdev" 
    ];
  };
}