diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 0dd0e8edf17..92fbdd85b35 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -36,7 +36,10 @@ let
     });
   };
 
-in rec {
+  # Use this rather than `rec { ... }` below for sake of overlays.
+  inherit (pkgs.haskell) compiler packages;
+
+in {
   lib = haskellLib;
 
   compiler = {