From 7f5b750b401e98e9e2a346552aba5bd2e0a9203f Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Mon, 12 Jun 2017 16:07:34 +0200
Subject: Don't run pre-build-hook if we don't have a derivation

This fixes a build failure on OS X when using Hydra or Nix 1.12's
build-remote (since they don't copy the derivation to the build
machine).
---
 src/libstore/build.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/libstore/build.cc')

diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index d5fe41d1b..bdec30151 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -1950,7 +1950,7 @@ void DerivationGoal::startBuilder()
                 }
     }
 
-    if (settings.preBuildHook != "") {
+    if (useChroot && settings.preBuildHook != "" && dynamic_cast<Derivation *>(drv.get())) {
         printMsg(lvlChatty, format("executing pre-build hook ‘%1%’")
             % settings.preBuildHook);
         auto args = useChroot ? Strings({drvPath, chrootRootDir}) :
-- 
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