From 774a0a397c82c6258de1dcacafa502175f44a6e1 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Wed, 10 Jan 2007 14:07:10 +0000
Subject: [PATCH] * Allow the root device to be specified by label.

svn path=/nixos/trunk/; revision=7612
---
 system/system.nix | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/system/system.nix b/system/system.nix
index 12d345bd2d5..d1f0164d314 100644
--- a/system/system.nix
+++ b/system/system.nix
@@ -71,9 +71,11 @@ rec {
     inherit extraUtils;
     autoDetectRootDevice = config.get ["boot" "autoDetectRootDevice"];
     rootDevice =
-      (pkgs.library.findSingle (fs: fs.mountPoint == "/")
-        (abort "No root mount point declared.")
-        (config.get ["fileSystems"])).device;
+      let rootFS = 
+        (pkgs.library.findSingle (fs: fs.mountPoint == "/")
+          (abort "No root mount point declared.")
+          (config.get ["fileSystems"]));
+      in if rootFS ? device then rootFS.device else "LABEL=" + rootFS.label;
     rootLabel = config.get ["boot" "rootLabel"];
     inherit stage2Init;
     modulesDir = modulesClosure;