From c769ba8fae245265bdb3f173a41e0e8c4f2a2d4b Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Sun, 10 Jan 2021 14:00:59 -0500
Subject: [PATCH] Add recommended workaround for resolver issues
 (pypa/pip#9143). Fixes #273.

---
 tox.ini | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tox.ini b/tox.ini
index d5de1d16..11f52d7a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,6 +12,10 @@ commands =
 	pytest {posargs}
 usedevelop = True
 extras = testing
+setenv =
+	# workaround pypa/pip#9143
+	PIP_USE_DEPRECATED=legacy-resolver
+
 
 [testenv:docs]
 extras =