Simplified config to not try to build multiple test runners at once.

buildout.cfg

 [buildout]
 develop = zc.recipe.egg_ .
-parts = 
-      test2.3 py2.3 oltest2.3
-      test2.4 py2.4 oltest2.4
-      test2.5 py2.5 oltest2.5
+parts = test oltest py
 
-[py2.3]
+[py]
 recipe = zc.recipe.egg
 eggs = zc.buildout
-scripts = py2.3
-interpreter = py2.3
-python = python2.3
+interpreter = py
 
-[test2.3]
+[test]
 recipe = zc.recipe.testrunner
 eggs = 
   zc.buildout
   zc.recipe.egg
-python = python2.3
 
 # Tests that can be run wo a network
-[oltest2.3]
+[oltest]
 recipe = zc.recipe.testrunner
 eggs = 
   zc.buildout
@@ -30,61 +24,3 @@ defaults =
   '-t',
   '!(bootstrap|selectingpython|selecting-python)',
   ]
-python = python2.3
-
-
-[py2.4]
-recipe = zc.recipe.egg
-eggs = zc.buildout
-scripts = py2.4
-interpreter = py2.4
-python = python2.4
-
-[test2.4]
-recipe = zc.recipe.testrunner
-eggs = 
-  zc.buildout
-  zc.recipe.egg
-python = python2.4
-
-# Tests that can be run wo a network
-[oltest2.4]
-recipe = zc.recipe.testrunner
-eggs = 
-  zc.buildout
-  zc.recipe.egg
-defaults =
-  [
-  '-t',
-  '!(bootstrap|selectingpython|selecting-python)',
-  ]
-python = python2.4
-
-
-[py2.5]
-recipe = zc.recipe.egg
-eggs = zc.buildout
-scripts = py2.5
-interpreter = py2.5
-python = python2.5
-
-[test2.5]
-recipe = zc.recipe.testrunner
-eggs = 
-  zc.buildout
-  zc.recipe.egg
-python = python2.5
-
-# Tests that can be run wo a network
-[oltest2.5]
-recipe = zc.recipe.testrunner
-eggs = 
-  zc.buildout
-  zc.recipe.egg
-defaults =
-  [
-  '-t',
-  '!(bootstrap|selectingpython|selecting-python)',
-  ]
-python = python2.5
-