begin migration to dendritic pattern

modules/components/display-managers/ly.nix

@@ -0,0 +1,9 @@
+{ inputs, self, ... }: {
+  flake.nixosModules.ly = { config, pkgs, ... }: {
+    services.displayManager.ly = {
+      enable = true;
+    };
+
+    security.pam.services.login.fprintAuth = false;
+  };
+}