From 804f4bed929ec097439a59c35af264070d1d3034 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Llu=C3=ADs=20Batlle=20i=20Rossell?=
 <viric@vicerveza.homeunix.net>
Date: Tue, 9 Mar 2010 18:05:33 +0000
Subject: [PATCH] Fixing the evaluation of trunk (regarding reenabling uclibc
 cross builds)

svn path=/nixpkgs/trunk/; revision=20509
---
 pkgs/top-level/all-packages.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 04f2d450f1b..c580fb6487d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3747,7 +3747,7 @@ let
     else if (name == "uclibc") then uclibcCross
     else throw "Unknown libc";
 
-  libcCross = libcCrossChooser crossSystem.libc;
+  libcCross = assert crossSystem != null; libcCrossChooser crossSystem.libc;
 
   eglibc = import ../development/libraries/eglibc {
     inherit fetchsvn stdenv;