From d3004c78d9816431224f7ac0416c5bfea0cc22cd Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Tue, 11 Sep 2012 13:07:22 -0400
Subject: [PATCH] Don't use -warning=no-timestamp unless we have GNU tar

http://hydra.nixos.org/build/2998485
---
 corepkgs/unpack-channel.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/corepkgs/unpack-channel.nix b/corepkgs/unpack-channel.nix
index 57d5a09a07..8cf79f8284 100644
--- a/corepkgs/unpack-channel.nix
+++ b/corepkgs/unpack-channel.nix
@@ -6,7 +6,7 @@ let
     ''
       mkdir $out
       cd $out
-      ${bzip2} -d < $src | ${tar} xf - --warning=no-timestamp
+      ${bzip2} -d < $src | ${tar} xf - ${tarFlags}
       mv * $out/$channelName
       if [ -n "$binaryCacheURL" ]; then
         mkdir $out/binary-caches