- much simplified buildout config

buildout.cfg

@@ -1,28 +1,18 @@
 [buildout]
-extends = https://zopefoundation.github.io/Zope/releases/master/versions.cfg
-          https://raw.githubusercontent.com/zopefoundation/Zope/master/sources.cfg
-show-picked-versions = true
+extends =
+    https://zopefoundation.github.io/Zope/releases/master/versions-prod.cfg
 develop = .
 parts =
-    interpreter
     test
-    tox
-extensions = mr.developer
-auto-checkout =
-
-[sources]
-Zope = git git://github.com/zopefoundation/Zope
-
-[interpreter]
-recipe = zc.recipe.egg
-interpreter = python
-eggs =
-    Products.PythonScripts
+    scripts
 
 [test]
 recipe = zc.recipe.testrunner
-eggs = Products.PythonScripts
+defaults = ['-cv']
+eggs =
+    Products.PythonScripts
 
-[tox]
+[scripts]
 recipe = zc.recipe.egg
-eggs = tox
+eggs =
+    tox