From 978643b7222db66837d39037f884be01fb9af234 Mon Sep 17 00:00:00 2001
From: Peter Korsgaard <peter@korsgaard.com>
Date: Fri, 9 Mar 2018 18:40:16 +0100
Subject: [PATCH] setup.py: make pip optional

pip may not be available on the build host, and it is only used to check if
docker-py is already installed, so skip the check if pip isn't available.

[Upstream-status: submitted (https://github.com/docker/docker-py/pull/1948)]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
 setup.py | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/setup.py b/setup.py
index 271d94f..c9b91a3 100644
--- a/setup.py
+++ b/setup.py
@@ -5,16 +5,20 @@ import codecs
 import os
 import sys
 
-import pip
-
 from setuptools import setup, find_packages
 
-if 'docker-py' in [x.project_name for x in pip.get_installed_distributions()]:
-    print(
-        'ERROR: "docker-py" needs to be uninstalled before installing this'
-        ' package:\npip uninstall docker-py', file=sys.stderr
-    )
-    sys.exit(1)
+try:
+    import pip
+
+    if 'docker-py' in \
+            [x.project_name for x in pip.get_installed_distributions()]:
+        print(
+            'ERROR: "docker-py" needs to be uninstalled before installing this'
+            ' package:\npip uninstall docker-py', file=sys.stderr
+        )
+        sys.exit(1)
+except ImportError:
+    pass
 
 ROOT_DIR = os.path.dirname(__file__)
 SOURCE_DIR = os.path.join(ROOT_DIR)
-- 
2.11.0