[gui] Switch to Ly since GDM seems to fail to start on 26.05

system/features/gui.nix

@@ -14,10 +14,19 @@
       variant = "";
     };
   };
-  services.displayManager.gdm = {
+  # services.displayManager.gdm = {
+  #   enable = true;
+  # };
+  services.displayManager.ly = {
     enable = true;
+    # See https://github.com/S41G0N/ly/blob/master/res/config.ini
+    settings = {
+      animation = "matrix"; # matrix|doom|none
+      bigclock = "en";
+      clear_password = true; # erase the password on failure
+      clock = "%c"; # Show the clock
+    };
   };
-  # services.displayManager.ly.enable = true;
 
   # Enable Hyprland so it shows up in the menu
   programs.hyprland = {