From a257d811d84bf2ba35c319709d0829ef9ee82659 Mon Sep 17 00:00:00 2001
From: vitaut <victor.zverovich@gmail.com>
Date: Thu, 15 Oct 2015 07:20:52 -0700
Subject: [PATCH] Check if pip has __version__

---
 doc/build.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/build.py b/doc/build.py
index 4b741b10..41964bb7 100755
--- a/doc/build.py
+++ b/doc/build.py
@@ -28,8 +28,8 @@ def build_docs():
   # Upgrade pip because installation of sphinx with pip 1.1 available on Travis
   # is broken (see #207) and it doesn't support the show command.
   import pip
-  print('pip version: {} {}'.format(pip.__version__, LooseVersion(pip.__version__) < LooseVersion('1.5.4')))
-  if LooseVersion(pip.__version__) < LooseVersion('1.5.4'):
+  if not '__version__' in dir(pip) or \
+     LooseVersion(pip.__version__) < LooseVersion('1.5.4'):
     print("Updating pip")
     check_call(['pip', 'install', '--upgrade', 'pip==1.5.4'])
   # Install Sphinx and Breathe.