diff --git a/pkgs/development/haskell-modules/generic-builder.nix b/pkgs/development/haskell-modules/generic-builder.nix
index 7c3f6424193..964f569ef67 100644
--- a/pkgs/development/haskell-modules/generic-builder.nix
+++ b/pkgs/development/haskell-modules/generic-builder.nix
@@ -303,7 +303,7 @@ stdenv.mkDerivation ({
 
   passthru = passthru // {
 
-    inherit pname version ghcEnv;
+    inherit pname version ghcEnv haskellBuildInputs;
 
     isHaskellLibrary = hasActiveLibrary;