buildroot/package/python-can/0001-setup.py-require-pytest-runner-only-when-necessary.patch

From 3da4873bcdcb7d8bd47e275b97bbb6f1c134b3b9 Mon Sep 17 00:00:00 2001
From: Pierre-Jean Texier <pjtexier@koncepto.io>
Date: Sat, 29 Jun 2019 21:19:08 +0200
Subject: [PATCH] setup.py: require pytest-runner only when necessary

This optimizes setup.py for cases when pytest-runner is not needed,
using the approach that is suggested upstream:

https://pypi.python.org/pypi/pytest-runner#conditional-requirement

[Upstream status: https://github.com/hardbyte/python-can/pull/633]
Signed-off-by: Pierre-Jean Texier <pjtexier@koncepto.io>
---
 setup.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 221c030..6e1778a 100644
--- a/setup.py
+++ b/setup.py
@@ -11,6 +11,7 @@ from os import listdir
 from os.path import isfile, join
 import re
 import logging
+import sys
 from setuptools import setup, find_packages
 
 logging.basicConfig(level=logging.WARNING)
@@ -40,6 +41,8 @@ tests_require = [
 
 extras_require["test"] = tests_require
 
+needs_pytest = {'pytest', 'test', 'ptr'}.intersection(sys.argv)
+pytest_runner = ['pytest-runner'] if needs_pytest else []
 
 setup(
     # Description
@@ -96,7 +99,7 @@ setup(
         'windows-curses;platform_system=="Windows"',
         "filelock",
     ],
-    setup_requires=["pytest-runner"],
+    setup_requires=pytest_runner,
     extras_require=extras_require,
     tests_require=tests_require,
 )
-- 
2.7.4