From a443c7573b3d76a6db107e6de974205e605a2738 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Tue, 1 Jun 2010 10:01:14 +0000
Subject: [PATCH] * Hack to allow derivations to disable chroot builds by
 setting the   attribute "__noChroot = true" (requested by Rob).

---
 src/libstore/build.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index e068ab0bd..a482ace00 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -1545,6 +1545,9 @@ void DerivationGoal::startBuilder()
 
     if (fixedOutput) useChroot = false;
 
+    /* Hack to allow derivations to disable chroot builds. */
+    if (drv.env["__noChroot"] == "1") useChroot = false;
+
     if (useChroot) {
 #if CHROOT_ENABLED
         /* Create a temporary directory in which we set up the chroot