From 663934aec8fa29c4ba25a078cd8a82430b2666b6 Mon Sep 17 00:00:00 2001
From: Kosyrev Serge <serge.kosyrev@iohk.io>
Date: Mon, 12 Mar 2018 02:26:41 +0300
Subject: [PATCH] ghc841:  fixed deriving-compat now on hackage

---
 pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix b/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
index 24032e97a62e..2db02918e015 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
@@ -55,6 +55,11 @@ self: super: {
   ##       from the context: a
   constraints = super.constraints_0_10;
 
+  ## Needs bump to a versioned attribute
+  ## Setup: Encountered missing dependencies:
+  ## template-haskell >=2.5 && <2.13
+  deriving-compat = super.deriving-compat_0_4_1;
+
   ## Needs bump to a versioned attribute
   ## Issue: https://github.com/sol/doctest/issues/189
   doctest = overrideCabal super.doctest_0_14_1 (drv: {