update tox

Author: benieric

tox.ini

@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-isolated_build = true
+isolated_build = false
 envlist = black-format,flake8,pylint,docstyle,sphinx,doc8,twine,py38,py39,py310,py311
 
 skip_missing_interpreters = False
@@ -88,7 +88,7 @@ commands =
     pip install 'dill>=0.3.8'
 
     pytest {posargs}
-deps = .[test]
+usedevelop = true
 depends =
     {py38,py39,py310,p311}: clean