From 4f939520a6ea8fbe463e1b113458b0f5bdda290d Mon Sep 17 00:00:00 2001
From: Shea Levy <shea@shealevy.com>
Date: Wed, 13 Oct 2021 05:12:27 -0400
Subject: [PATCH] Add missing comment

---
 nix/pkgs/haskell/extra.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/nix/pkgs/haskell/extra.nix b/nix/pkgs/haskell/extra.nix
index 78857b5fc61..e31a06a180d 100644
--- a/nix/pkgs/haskell/extra.nix
+++ b/nix/pkgs/haskell/extra.nix
@@ -84,6 +84,7 @@ let
       "https://github.com/haskell/lsp.git"."ef59c28b41ed4c5775f0ab0c1e985839359cec96" = "1whcgw4hhn2aplrpy9w8q6rafwy7znnp0rczgr6py15fqyw2fwb5";
     };
     modules = [{
+      # for compatibility with the GHC patch for extensible interfaces, not needed on mainline GHC.
       packages.ghcide.patches = [ ../../patches/ghcide_partial_iface.patch ];
       # Workaround for https://github.com/haskell/haskell-language-server/issues/1160
       packages.haskell-language-server.patches = lib.mkIf stdenv.isDarwin [ ../../patches/haskell-language-server-dynamic.patch ];