tests: make tox tests working

tox.ini

@@ -8,3 +8,14 @@ ignore=E124,E125,E127,E128,E501
 # Exclude the build directory that distutils creates
 exclude=build/*
 max-line-length=120
+
+
+[tox]
+# sync with .github/workflows/tox.yml!
+envlist = py{36,37,38,39,310,311,312,313}
+skipsdist = True
+
+
+[testenv]
+deps = nose
+commands = nosetests {posargs}