From c95742283595cb01b44ddc8e6ff5e9c1d66db444 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Fri, 3 Oct 2014 16:53:28 +0200
Subject: [PATCH] =?UTF-8?q?createDirs():=20Handle=20=E2=80=98path=E2=80=99?=
 =?UTF-8?q?=20being=20a=20symlink?=
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In particular, this fixes "nix-build -o /tmp/result" on Mac OS X
(where /tmp is a symlink).
---
 nix/libutil/util.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/nix/libutil/util.cc b/nix/libutil/util.cc
index 54b9eb82d6..9af42a150c 100644
--- a/nix/libutil/util.cc
+++ b/nix/libutil/util.cc
@@ -379,6 +379,9 @@ Paths createDirs(const Path & path)
         created.push_back(path);
     }
 
+    if (S_ISLNK(st.st_mode) && stat(path.c_str(), &st) == -1)
+        throw SysError(format("statting symlink `%1%'") % path);
+
     if (!S_ISDIR(st.st_mode)) throw Error(format("`%1%' is not a directory") % path);
 
     return created;