From 57a0224a426f1623e4cc2559b1a0f3169f67c561 Mon Sep 17 00:00:00 2001
From: Robert Vollmert <rob@vllmrt.net>
Date: Tue, 4 Jul 2017 21:48:59 +0200
Subject: [PATCH] nix: short TMPDIR for tests on Darwin

This fixes test failures due to overly long nix-daemon socket paths.
---
 pkgs/tools/package-management/nix/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index 45dfd52dba19..a90f38ccc095 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -79,6 +79,9 @@ let
 
     doInstallCheck = true;
 
+    # socket path becomes too long otherwise
+    preInstallCheck = lib.optional stdenv.isDarwin "export TMPDIR=/tmp";
+
     separateDebugInfo = stdenv.isLinux;
 
     crossAttrs = {