From 6daa7866ca1bdc8724fba496da2f953d762f1718 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Fri, 28 May 2010 09:29:39 +0000
Subject: [PATCH] * Only build aufs2 for kernels that have the requisite
 base/standalone   patch applied.

svn path=/nixpkgs/trunk/; revision=22037
---
 pkgs/os-specific/linux/aufs2/default.nix  | 2 ++
 pkgs/os-specific/linux/kernel/patches.nix | 5 +++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/pkgs/os-specific/linux/aufs2/default.nix b/pkgs/os-specific/linux/aufs2/default.nix
index 86ccc7e30d54..0b10962b7f7c 100644
--- a/pkgs/os-specific/linux/aufs2/default.nix
+++ b/pkgs/os-specific/linux/aufs2/default.nix
@@ -1,5 +1,7 @@
 { stdenv, fetchurl, kernel, perl }:
 
+assert kernel.features ? aufsBase;
+
 let version = "20100522"; in
 
 stdenv.mkDerivation {
diff --git a/pkgs/os-specific/linux/kernel/patches.nix b/pkgs/os-specific/linux/kernel/patches.nix
index 9595fcb36c8e..abaa4857237a 100644
--- a/pkgs/os-specific/linux/kernel/patches.nix
+++ b/pkgs/os-specific/linux/kernel/patches.nix
@@ -143,6 +143,7 @@ in
       # standalone package.
       name = "aufs2";
       patch = ./aufs2.patch;
-    };  
-      
+      features.aufsBase = true;
+    };
+
 }