Add eul app

hosts/darwin/system/os.nix

@@ -12,6 +12,7 @@
   os.homebrew.obsidian.enable = true;
   os.homebrew.microsoft.enable = true;
   os.homebrew.keka.enable = true;
+  os.homebrew.eul.enable = true;
 
   # Fix on R install. # Case sensitive bug
   environment.systemPackages = with pkgs; [ R ];

modules/system/darwin/eul.nix

@@ -0,0 +1,17 @@
+{ lib, config, ... }:
+with lib;
+let
+  cfg = config.os.homebrew.eul;
+in
+{
+  options.os.homebrew.eul = {
+    enable = mkEnableOption "System iina homebrew service";
+  };
+  config = mkIf cfg.enable {
+
+    homebrew.casks = [
+      "eul"
+    ];
+
+  };
+}