diff --git a/pkgs/build-support/remove-references-to/default.nix b/pkgs/build-support/remove-references-to/default.nix
index 30c79821b906..794c44572265 100644
--- a/pkgs/build-support/remove-references-to/default.nix
+++ b/pkgs/build-support/remove-references-to/default.nix
@@ -34,8 +34,10 @@ stdenv.mkDerivation {
     substituteAll ${./darwin-sign-fixup.sh} $out/nix-support/setup-hooks.sh
   '';
 
-  inherit (builtins) storeDir;
-  shell = lib.getBin shell + (shell.shellPath or "");
-  signingUtils = if darwinCodeSign then signingUtils else null;
+  env = {
+    inherit (builtins) storeDir;
+    shell = lib.getBin shell + (shell.shellPath or "");
+  } // lib.optionalAttrs darwinCodeSign { inherit signingUtils; };
+
   meta.mainProgram = "remove-references-to";
 }