diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index df6fe0f2d26c..84311e6b09a3 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -105,6 +105,7 @@ self: super: builtins.intersectAttrs super {
     configureFlags =  "--extra-include-dirs=${pkgs.rdkafka}/include/librdkafka";
   });
 
+  # library has hard coded directories that need to be removed https://github.com/NixOS/nixpkgs/pull/29109
   hw-kafka-client = dontCheck (overrideCabal super.hw-kafka-client (drv: {
     preConfigure = "sed -i -e /extra-lib-dirs/d -e /include-dirs/d -e /librdkafka/d hw-kafka-client.cabal";
     configureFlags =  "--extra-include-dirs=${pkgs.rdkafka}/include/librdkafka";