added sddm with autologin (only one needed)

modules/features/sddm/autologin.nix

@@ -0,0 +1,21 @@
+{
+  self,
+  inputs,
+  ...
+}: {
+  flake.nixosModules.sddm-autologin = {
+    pkgs,
+    lib,
+    ...
+  }: let
+    modules = with self.nixosModules; [
+      sddm
+    ];
+  in {
+    imports = modules;
+    services.displayManager = {
+      autoLogin.enable = true;
+      autoLogin.user = "user01";
+    };
+  };
+}

modules/features/sddm/default.nix

@@ -0,0 +1,25 @@
+{
+  self,
+  inputs,
+  ...
+}: {
+  flake.nixosModules.sddm = {
+    pkgs,
+    lib,
+    ...
+  }: {
+    environment.systemPackages = [
+      (pkgs.catppuccin-sddm.override {
+        flavor = "mocha";
+        font = "Fira Mono Nerd Font";
+        fontSize = "11";
+        background = null;
+      })
+    ];
+    services.displayManager.sddm = {
+      enable = true;
+      theme = "catppuccin-mocha-mauve";
+      package = pkgs.kdePackages.sddm;
+    };
+  };
+}