From b6b142b4b10552f2a2a8c904487bbd196d35a5c1 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Mon, 2 Jan 2017 14:46:37 +0100
Subject: [PATCH] Provide /var/run/nscd/socket in the sandbox
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Otherwise sandbox builds can fail, e.g.

  $ NIX_REMOTE=local?root=/tmp/nix nix-build '<nixpkgs>' -A hello --option build-use-substitutes false
  ...
  downloading ‘http://ftpmirror.gnu.org/bash/bash-4.3-patches/bash43-047’...
  error: unable to download ‘http://ftpmirror.gnu.org/bash/bash-4.3-patches/bash43-047’: Couldn't resolve host name (6)
---
 src/libstore/build.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index eaa9128d8..c46b7cd64 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -2340,6 +2340,7 @@ void DerivationGoal::runChild()
                 ss.push_back("/etc/nsswitch.conf");
                 ss.push_back("/etc/services");
                 ss.push_back("/etc/hosts");
+                ss.push_back("/var/run/nscd/socket");
             }
 
             for (auto & i : ss) dirsInChroot[i] = i;