From eb189808c49e651ab3c1988c666d898e2b925077 Mon Sep 17 00:00:00 2001
From: Matthew Bauer <mjbauer95@gmail.com>
Date: Thu, 6 Jun 2019 00:33:23 -0400
Subject: [PATCH] =?UTF-8?q?python-cld2-cffi:=20don=E2=80=99t=20error=20on?=
 =?UTF-8?q?=20c++11-narrowing?=
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---
 pkgs/development/python-modules/cld2-cffi/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/python-modules/cld2-cffi/default.nix b/pkgs/development/python-modules/cld2-cffi/default.nix
index c54b962a8f6..a38d4c0866e 100644
--- a/pkgs/development/python-modules/cld2-cffi/default.nix
+++ b/pkgs/development/python-modules/cld2-cffi/default.nix
@@ -13,7 +13,7 @@ buildPythonPackage rec {
   checkInputs = [ nose ];
 
   # gcc doesn't approve of this code, so disable -Werror
-  NIX_CFLAGS_COMPILE = "-w";
+  NIX_CFLAGS_COMPILE = [ "-w" ] ++ stdenv.lib.optional stdenv.cc.isClang "-Wno-error=c++11-narrowing";
 
   checkPhase = "nosetests -v";