kappanhang: provide update script

pkgs/by-name/ka/kappanhang/package.nix

@@ -4,6 +4,7 @@
   fetchFromGitHub,
   pkg-config,
   pulseaudio,
+  nix-update-script,
 }:
 
 buildGoModule rec {
@@ -22,6 +23,8 @@ buildGoModule rec {
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ pulseaudio ];
 
+  passthru.updateScript = nix-update-script { };
+
   meta = {
     homepage = "https://github.com/nonoo/kappanhang";
     description = "Remote control for Icom radio transceivers";