From 1c74a16e10e6d5ebff37d7846638c99850dce641 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Thu, 3 Mar 2016 13:10:22 +0100
Subject: [PATCH] rcs: Fix build on gcc 5

http://hydra.nixos.org/build/32624218
---
 pkgs/applications/version-management/rcs/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/applications/version-management/rcs/default.nix b/pkgs/applications/version-management/rcs/default.nix
index a829af8aa23..44f72c3f0fe 100644
--- a/pkgs/applications/version-management/rcs/default.nix
+++ b/pkgs/applications/version-management/rcs/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
 
-  NIX_CFLAGS_COMPILE = if stdenv.isDarwin then "-std=gnu99" else null;
+  NIX_CFLAGS_COMPILE = [ "-std=c99" ];
 
   meta = {
     homepage = http://www.gnu.org/software/rcs/;