kanata: add update script

Author: jian-lin

pkgs/tools/system/kanata/default.nix

@@ -5,6 +5,7 @@
 , fetchFromGitHub
 , jq
 , moreutils
+, nix-update-script
 , withCmd ? false
 }:
 
@@ -50,6 +51,10 @@ rustPlatform.buildRustPackage rec {
     install -Dm 444 assets/kanata-icon.svg $out/share/icons/hicolor/scalable/apps/kanata.svg
   '';
 
+  passthru = {
+    updateScript = nix-update-script { };
+  };
+
   meta = with lib; {
     description = "Tool to improve keyboard comfort and usability with advanced customization";
     homepage = "https://github.com/jtroo/kanata";