--- zope_interface-8.1.1/tox.ini.orig
+++ zope_interface-8.1.1/tox.ini
@@ -24,7 +24,6 @@
     !pure-!pypy3: PURE_PYTHON=0
     ZOPE_INTERFACE_STRICT_IRO=1
 commands =
-    pip install -U -e .[test]
     coverage run -p -m unittest discover -s src/zope {posargs}
 extras =
     test