From d33a26b370d4c17809b5e2a01426addd7125c4d0 Mon Sep 17 00:00:00 2001
From: Daiderd Jordan <daiderd@gmail.com>
Date: Wed, 28 Mar 2018 20:55:39 +0200
Subject: [PATCH] python-celery: fix darwin build

---
 pkgs/development/python-modules/celery/default.nix | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/python-modules/celery/default.nix b/pkgs/development/python-modules/celery/default.nix
index 44613dd4e5b..7f3fb46d1e1 100644
--- a/pkgs/development/python-modules/celery/default.nix
+++ b/pkgs/development/python-modules/celery/default.nix
@@ -1,6 +1,7 @@
 { stdenv, buildPythonPackage, fetchPypi, iana-etc, libredirect,
   pytest, case, kombu, billiard, pytz, anyjson, amqp, eventlet
-}: 
+}:
+
 buildPythonPackage rec {
   pname = "celery";
   version = "4.1.0";
@@ -11,11 +12,11 @@ buildPythonPackage rec {
   };
 
   # make /etc/protocols accessible to fix socket.getprotobyname('tcp') in sandbox
-  preCheck = ''
+  preCheck = stdenv.lib.optionalString stdenv.isLinux ''
     export NIX_REDIRECTS=/etc/protocols=${iana-etc}/etc/protocols \
       LD_PRELOAD=${libredirect}/lib/libredirect.so
   '';
-  postCheck = ''
+  postCheck = stdenv.lib.optionalString stdenv.isLinux ''
     unset NIX_REDIRECTS LD_PRELOAD
   '';