From 28cb0f58c473eb6622415c20c6d27a186d9696be Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Forsman?= <bjorn.forsman@gmail.com>
Date: Wed, 16 Jul 2014 12:08:48 +0200
Subject: [PATCH] linux: only enable CONFIG_NFS_SWAP for v3.6+ kernels

Linux v3.6 is the earliest version with CONFIG_NFS_SWAP support. This
change unbreaks NixOS tests for older kernels.
---
 pkgs/os-specific/linux/kernel/common-config.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/os-specific/linux/kernel/common-config.nix b/pkgs/os-specific/linux/kernel/common-config.nix
index 9050d7aa988..a4b2c221b81 100644
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -157,7 +157,9 @@ with stdenv.lib;
   BTRFS_FS_POSIX_ACL y
   UBIFS_FS_XATTR? y
   UBIFS_FS_ADVANCED_COMPR? y
-  NFS_SWAP y
+  ${optionalString (versionAtLeast version "3.6") ''
+    NFS_SWAP y
+  ''}
   ${optionalString (versionAtLeast version "3.11") ''
     NFS_V4_1 y  # NFSv4.1 client support
     NFS_V4_2 y