From 1b3a78a4597c6c1d94fc51aa0520252aab21a2c8 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Wed, 2 Jan 2013 12:00:26 +0100
Subject: [PATCH] Automatically fall back if the references of a substitute are
 not substitutable

Fixes #77.
---
 src/libstore/build.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index c1cbf362a0..b37193b858 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -2639,7 +2639,7 @@ void SubstitutionGoal::referencesValid()
 
     if (nrFailed > 0) {
         debug(format("some references of path `%1%' could not be realised") % storePath);
-        amDone(ecFailed);
+        amDone(nrNoSubstituters > 0 ? ecNoSubstituters : ecFailed);
         return;
     }