diff --git a/artiq-full.nix b/artiq-full.nix
index 0d9de8d..958b4c4 100644
--- a/artiq-full.nix
+++ b/artiq-full.nix
@@ -100,7 +100,7 @@ let
         "uamsterdam"
       ]);
 
-      artiq-board = import ./fast/artiq-board.nix { inherit pkgs; };
+      artiq-board = builtins.trace "artiq-board" (import ./fast/artiq-board.nix { inherit pkgs; });
       conda-artiq-board = import ./conda-artiq-board.nix { inherit pkgs; };
       src = pkgs.fetchgit {
         url = "https://git.m-labs.hk/M-Labs/sinara-systems.git";