Update utils

flake.nix

@@ -4,6 +4,10 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     flake-utils.url = "github:numtide/flake-utils";
+    # Shared control4-utils library
+    # sync by running nix lock update control4-utils, then nix run .#sync-utils
+    control4-utils.url = "git+ssh://git@git.c3c.cz/arnie/nix-config.git?dir=flakes/control4-utils";
+    control4-utils.inputs.nixpkgs.follows = "nixpkgs";
   };
 
   outputs =
@@ -11,6 +15,7 @@
       self,
       nixpkgs,
       flake-utils,
+      control4-utils,
     }:
     let
       version = "0.0.1";
@@ -39,16 +44,27 @@
           '';
         };
 
-        apps.default = {
-          type = "app";
-          program = "${pkgs.writeShellScript "build-c4z" ''
-            set -euo pipefail
-            nix build
-            # Move the file into a predefined directory mounted in the Composer Pro environment
-            rm -f ../compiled/${driverName}.c4z
-            cp -L result/${driverName}.c4z ../compiled
-            echo "Built ${gitRev}: ../compiled/${driverName}.c4z"
-          ''}";
+        apps = {
+          default = {
+            type = "app";
+            program = "${pkgs.writeShellScript "build-c4z" ''
+              set -euo pipefail
+              nix build
+              # Move the file into a predefined directory mounted in the Composer Pro environment
+              rm -f ../compiled/${driverName}.c4z
+              cp -L result/${driverName}.c4z ../compiled
+              echo "Built ${gitRev}: ../compiled/${driverName}.c4z"
+            ''}";
+          };
+
+          # Replace src/control4-utils with the shared copy; run from the project root
+          sync-utils = {
+            type = "app";
+            program = "${pkgs.writeShellScript "sync-utils" ''
+              set -euo pipefail
+              ${control4-utils.apps.${system}.default.program} src
+            ''}";
+          };
         };
 
         packages.default = pkgs.stdenv.mkDerivation {