From b5507a1d0040c27eb3b1dd6caefaf278ca37b4e2 Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Wed, 21 Mar 2012 16:56:44 +0100
Subject: id:"87haxiaty9.fsf@gnu.org".

---
 hurd/running/nix.mdwn | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/hurd/running/nix.mdwn b/hurd/running/nix.mdwn
index 92e5459a..663589f6 100644
--- a/hurd/running/nix.mdwn
+++ b/hurd/running/nix.mdwn
@@ -17,3 +17,11 @@ License|/fdl]]."]]"""]]
       * <http://hydra.nixos.org/job/gnu/hurd-master/qemu_image/latest/download>
 
   * <http://hydra.nixos.org/job/gnu/hurd-master/qemu_test>
+
+---
+
+This QEMU image is not (yet) comparable to NixOS, because the latter provides
+extra features, such as whole-system configuration (including services, etc.),
+and whole-system transactional update and rollback.  It is is cross-built using
+Nix, and because of that, it uses per-package installation directories under
+`/nix/store`.
-- 
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