From 72e6e6a4833e3ea481f3573034011cb07abd2c8d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Mon, 18 Jan 2016 15:00:39 +0100
Subject: [PATCH] tarball: fix evaluation of mdadm on darwin

It probably doesn't make any sense to have mdadm on darwin,
but we have to "fail in a right way".
---
 pkgs/os-specific/linux/mdadm/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/os-specific/linux/mdadm/default.nix b/pkgs/os-specific/linux/mdadm/default.nix
index dc1697b9e9b2..465dc58199ed 100644
--- a/pkgs/os-specific/linux/mdadm/default.nix
+++ b/pkgs/os-specific/linux/mdadm/default.nix
@@ -1,5 +1,7 @@
 { stdenv, fetchurl, groff }:
 
+assert stdenv.isLinux;
+
 stdenv.mkDerivation rec {
   name = "mdadm-3.3.4";