From fe1c35f8d045d08cc9f8d07529c29597b80e9ff5 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Sat, 5 May 2012 17:31:05 -0400
Subject: [PATCH] prepend the assertion rewriting hook, so as not to break when
 builtin import is explicitly on sys.meta_path

---
 _pytest/assertion/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/_pytest/assertion/__init__.py b/_pytest/assertion/__init__.py
index bac5f653d..a91ab4831 100644
--- a/_pytest/assertion/__init__.py
+++ b/_pytest/assertion/__init__.py
@@ -50,7 +50,7 @@ def pytest_configure(config):
     hook = None
     if mode == "rewrite":
         hook = rewrite.AssertionRewritingHook()
-        sys.meta_path.append(hook)
+        sys.meta_path.insert(0, hook)
     warn_about_missing_assertion(mode)
     config._assertstate = AssertionState(config, mode)
     config._assertstate.hook = hook