From 0145a00d9c34c56e37654a9df228cf2b63f6c326 Mon Sep 17 00:00:00 2001
From: Kosyrev Serge <serge.kosyrev@iohk.io>
Date: Wed, 7 Mar 2018 00:46:02 +0300
Subject: [PATCH] ghc841:  fix for the bump-broken integer-gmp: m4 is now a
 dependency

---
 pkgs/development/compilers/ghc/8.4.1.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/compilers/ghc/8.4.1.nix b/pkgs/development/compilers/ghc/8.4.1.nix
index d60060000fa..dd0e5e4b057 100644
--- a/pkgs/development/compilers/ghc/8.4.1.nix
+++ b/pkgs/development/compilers/ghc/8.4.1.nix
@@ -15,7 +15,7 @@
 
 , # If enabled, GHC will be built with the GPL-free but slower integer-simple
   # library instead of the faster but GPLed integer-gmp library.
-  enableIntegerSimple ? false, gmp ? null
+  enableIntegerSimple ? false, gmp ? null, m4
 
 , # If enabled, use -fPIC when compiling static libs.
   enableRelocatedStaticLibs ? targetPlatform != hostPlatform
@@ -149,7 +149,7 @@ stdenv.mkDerivation rec {
   # masss-rebuild.
   crossConfig = true;
 
-  nativeBuildInputs = [ ghc perl autoconf automake happy alex python3 ];
+  nativeBuildInputs = [ ghc perl autoconf automake m4 happy alex python3 ];
 
   # For building runtime libs
   depsBuildTarget = toolsForTarget;