From c6d30536dc643fb5cf5ffa5d095640c80af4d153 Mon Sep 17 00:00:00 2001
From: Doug Hellmann <doug.hellmann@dreamhost.com>
Date: Mon, 31 Mar 2014 13:48:43 -0700
Subject: [PATCH] Work around atexit bug in python < 2.7.4

In python < 2.7.4, a lazy loading of package `pbr` will break
setuptools if some other modules registered functions in `atexit`.
solution from: http://bugs.python.org/issue15881#msg170215

This problem originally appeared in stevedore before the library
was adopted by Oslo
(https://github.com/dreamhost/stevedore/commit/74a719b11781cc93d60cff1b0a01de3e4e780a1d)

Change-Id: Icd412ca8435dca4b0f3b4075eca39b903dde6d27
---
 setup.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/setup.py b/setup.py
index 70c2b3f32b..83f2a7a646 100644
--- a/setup.py
+++ b/setup.py
@@ -17,6 +17,14 @@
 # THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
 import setuptools
 
+# In python < 2.7.4, a lazy loading of package `pbr` will break
+# setuptools if some other modules registered functions in `atexit`.
+# solution from: http://bugs.python.org/issue15881#msg170215
+try:
+    import multiprocessing  # flake8: noqa
+except ImportError:
+    pass
+
 setuptools.setup(
     setup_requires=['pbr'],
     pbr=True)