diff --git a/zc706.nix b/zc706.nix
index 7a719a5..239477e 100644
--- a/zc706.nix
+++ b/zc706.nix
@@ -2,4 +2,4 @@
   pkgs ? import <nixpkgs> {},
   artiq-zynq ? import <artiq-zynq> { mozillaOverlay = import <mozillaOverlay>; },
 }:
-artiq-zynq
+{}