{
  # greetd display manager with the graphical noctalia greeter, replaces greetd.nix.
  # The nixpkgs module enables greetd, accountsservice (avatars) and polkit, and
  # launches noctalia-greeter-session. Sessions (niri) are discovered from
  # wayland-sessions, the last one picked is remembered.
  # See https://docs.noctalia.dev/greeter/
  services.displayManager.noctalia-greeter = {
    enable = true;

    # lets the shell's "Sync Now" / auto-sync copy wallpaper, palette and monitor
    # layout to the greeter without an admin prompt (appearance only)
    passwordlessSyncUsers = [ "aaron" ];

    # rendered to /var/lib/noctalia-greeter/greeter.toml, wins over synced values
    settings = {
      user.default = "aaron";
      # same layout as niri, otherwise the password is typed on a us keymap
      keyboard.layout = "ch";
    };
  };
}