From ddefd3f453e99f2bf8bfc4e0e46bd0ca853200c6 Mon Sep 17 00:00:00 2001
From: Pavel Pristupa <pristupa@gmail.com>
Date: Wed, 17 Oct 2018 17:48:47 +0700
Subject: [PATCH] Call group.addoption() instead of _addoption() when parsing
 command-line arguments

Fix #337
---
 xdist/plugin.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xdist/plugin.py b/xdist/plugin.py
index 336c93a..ce8f643 100644
--- a/xdist/plugin.py
+++ b/xdist/plugin.py
@@ -47,7 +47,7 @@ def pytest_addoption(parser):
         "you can use 'auto' here for auto detection CPUs number on "
         "host system",
     )
-    group._addoption(
+    group.addoption(
         "--maxprocesses",
         dest="maxprocesses",
         metavar="maxprocesses",