From 1fffc949565afe75a3193b620aeef4fb27f2ec37 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Fri, 21 Sep 2012 15:29:05 -0400
Subject: [PATCH] Fix evaluation on non-Linux platforms

---
 pkgs/development/interpreters/perl/5.16/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/interpreters/perl/5.16/default.nix b/pkgs/development/interpreters/perl/5.16/default.nix
index 13d2fa5f54b..eefb098d46b 100644
--- a/pkgs/development/interpreters/perl/5.16/default.nix
+++ b/pkgs/development/interpreters/perl/5.16/default.nix
@@ -2,7 +2,7 @@
 
 let
 
-  libc = stdenv.gcc.libc or "/usr";
+  libc = if stdenv.gcc.libc or null != null then stdenv.gcc.libc else "/usr";
 
 in