don't try building x86_64 image

modules/services/dhcp-dns-sync/default.nix

@@ -41,12 +41,6 @@ in
       description = "Path to write Unbound include file";
     };
 
-    leasesJsonPath = lib.mkOption {
-      type = lib.types.str;
-      default = "/var/lib/router/leases.json";
-      description = "Path to write leases JSON file";
-    };
-
     interval = lib.mkOption {
       type = lib.types.str;
       default = "30s";
@@ -67,7 +61,6 @@ in
     # Ensure directories and files exist with proper permissions
     systemd.tmpfiles.rules = [
       "d /var/lib/unbound 0755 unbound unbound -"
-      "d /var/lib/router 0755 dhcp-dns-sync dhcp-dns-sync -"
       "f ${cfg.unboundConfigPath} 0644 dhcp-dns-sync dhcp-dns-sync -"
     ];
 
@@ -99,22 +92,16 @@ in
         # Allow access to networkctl via D-Bus
         SupplementaryGroups = [ "systemd-network" ];
         # Read/write paths
-        ReadWritePaths = [
-          "/var/lib/unbound"
-          "/var/lib/router"
+        ReadWritePaths = [ "/var/lib/unbound" ];
+        ExecStart = lib.concatStringsSep " " [
+          (lib.getExe dhcp-leases-to-unbound)
+          "-i ${cfg.interface}"
+          "-d ${cfg.domain}"
+          "-o ${cfg.unboundConfigPath}"
+          "--networkctl ${lib.getExe' pkgs.systemd "networkctl"}"
+          "--unbound-control ${lib.getExe' pkgs.unbound "unbound-control"}"
         ];
-        # Execute paths
-        ExecPaths = [ "/run/current-system/sw/bin" ];
       };
-
-      script = ''
-        ${lib.getExe dhcp-leases-to-unbound} \
-          -i ${cfg.interface} \
-          -d ${cfg.domain} \
-          -o ${cfg.unboundConfigPath} \
-          --leases-json ${cfg.leasesJsonPath} \
-          --networkctl ${lib.getExe' pkgs.systemd "networkctl"}
-      '';
     };
 
     # Systemd timer