From ca52fb855481116c8f5ae14945a01bff933f1743 Mon Sep 17 00:00:00 2001
From: Orivej Desh <orivej@gmx.fr>
Date: Sat, 13 Jul 2019 13:41:14 +0000
Subject: [PATCH] openmpi: unbundle libevent and hwloc on Darwin

When these dependencies are not found OpenMPI builds its internal copies.
---
 pkgs/development/libraries/openmpi/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/openmpi/default.nix b/pkgs/development/libraries/openmpi/default.nix
index 17ad9e53005b..760fc3e32329 100644
--- a/pkgs/development/libraries/openmpi/default.nix
+++ b/pkgs/development/libraries/openmpi/default.nix
@@ -32,7 +32,8 @@ in stdenv.mkDerivation rec {
   '';
 
   buildInputs = with stdenv; [ gfortran zlib ]
-    ++ lib.optionals isLinux [ libnl numactl libevent hwloc ]
+    ++ lib.optionals isLinux [ libnl numactl ]
+    ++ [ libevent hwloc ]
     ++ lib.optional (isLinux || isFreeBSD) rdma-core;
 
   nativeBuildInputs = [ perl ];