From 98e5779a9ba78ba70bf432b4db87a8d55420c13c Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Thu, 28 Dec 2006 11:32:20 +0000
Subject: [PATCH] * Don't clobber $shell.

svn path=/nixpkgs/trunk/; revision=7512
---
 pkgs/stdenv/generic/setup.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index 3d4ef2e1846..89a65af8749 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -16,7 +16,9 @@ fi
 
 # Execute the pre-hook.
 export SHELL=@shell@
-export shell=@shell@
+if test -z "$shell"; then
+    export shell=@shell@
+fi
 param1=@param1@
 param2=@param2@
 param3=@param3@