Pin to old versions of pytest as workaround for man-group/pytest-plugins#110.

jaraco · jaraco · commit ffaeb72b9a3c · 2019-02-14T08:05:58.000-05:00
diff --git a/tox.ini b/tox.ini
@@ -7,6 +7,8 @@ deps =
 	setuptools>=31.0.1
 	# workaround for yaml/pyyaml#126
 	# git+https://github.com/yaml/pyyaml@master#egg=pyyaml;python_version=="3.7"
+	# workaround for https://github.com/manahl/pytest-plugins/issues/110
+	pytest < 4
 commands =
 	py.test {posargs}
 	python setup.py checkdocs
