nix-flake/modules/components/display-managers/ly.nix

{ inputs, self, ... }: {
  flake.nixosModules.graphics = { config, pkgs, lib, ... }: {
    config = lib.mkIf (config.components.displayManager == "ly") {
      services.displayManager.ly.enable = true;

      security.pam.services.login.fprintAuth = false;
    };
  };
}