fix

modules/core/user.nix

@@ -21,7 +21,7 @@ in
 
   users.users.${username} = {
     isNormalUser = true;
-    description = ${username};
+    description = "${username}";
     extraGroups = [ "networkmanager" "wheel" ];
     shell = pkgs.zsh;
   };

modules/core/xserver.nix

@@ -5,7 +5,7 @@
     layout = "us";
     displayManager.autoLogin = {
       enable = true;
-      user = ${username};
+      user = "${username}";
     };
     libinput = {
       enable = true;