From 5cff1db403568d52b77990c1fe108c41a32c4b1e Mon Sep 17 00:00:00 2001
From: Marc Weber <marco-oweber@gmx.de>
Date: Mon, 18 May 2009 12:03:11 +0000
Subject: [PATCH] Synced with trunk @ 15509

svn path=/nixos/branches/modular-nixos/; revision=15642
---
 installer/nixos-install.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/installer/nixos-install.sh b/installer/nixos-install.sh
index 1784b4357f19..b90ffe4145c9 100644
--- a/installer/nixos-install.sh
+++ b/installer/nixos-install.sh
@@ -135,6 +135,10 @@ if test -n "@nixpkgsURL@" -a ${NIXOS_PULL:-1} != 0; then
     chroot $mountPoint @nix@/bin/nix-pull @nixpkgsURL@/MANIFEST || true
 fi
 
+if test -n "$NIXOS_PREPARE_CHROOT_ONLY"; then
+    echo "User requested only to prepare chroot. Exiting."
+    exit 0;
+fi
 
 # Build the specified Nix expression in the target store and install
 # it into the system configuration profile.