From dddf0314bc0b08e863628ab756ffe37c20f1985a Mon Sep 17 00:00:00 2001
From: Michael Alan Dorman <mdorman@ironicdesign.com>
Date: Sun, 25 Mar 2018 16:29:44 -0400
Subject: [PATCH] haskell-hnix: jailbreak deriving-compat dependency

Reported as https://github.com/jwiegley/hnix/issues/98
---
 pkgs/development/haskell-modules/configuration-common.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 22e2e5cc722..71d7f96aa85 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -244,6 +244,8 @@ self: super: {
   # base bound
   digit = doJailbreak super.digit;
 
+  # https://github.com/jwiegley/hnix/issues/98 - tied to an older deriving-compat
+  hnix = doJailbreak super.hnix;
 
   # Fails for non-obvious reasons while attempting to use doctest.
   search = dontCheck super.search;