- fix up tox config and prepare for parallel runs

buildout.cfg

@@ -3,13 +3,8 @@ extends =
     https://zopefoundation.github.io/Zope/releases/master/versions-prod.cfg
 develop = .
 parts = 
-    tox
     test
 
-[tox]
-recipe = zc.recipe.egg
-eggs = tox<3.8
-
 [test]
 recipe = zc.recipe.testrunner
 eggs = DocumentTemplate

setup.cfg

@@ -6,6 +6,7 @@ ignore =
 [flake8]
 ignore =
     C101
+    E741
 exclude =
     bootstrap.py
     src/DocumentTemplate/__init__.py

tox.ini

@@ -9,7 +9,6 @@ envlist =
 
 [testenv]
 commands =
-    {envbindir}/buildout -c {toxinidir}/buildout.cfg buildout:directory={envdir} buildout:develop={toxinidir} bootstrap
     {envbindir}/buildout -c {toxinidir}/buildout.cfg buildout:directory={envdir} buildout:develop={toxinidir} install test
     coverage run {envbindir}/test {posargs:-cv}
 skip_install = true
@@ -20,9 +19,14 @@ setenv =
     COVERAGE_FILE=.coverage.{envname}
 
 [testenv:coverage]
-basepython = python3.6
+basepython = python3
 skip_install = true
 deps = coverage
+depends =
+    py35,
+    py36,
+    py37,
+    py38,
 setenv =
     COVERAGE_FILE=.coverage
 commands =
@@ -33,12 +37,12 @@ commands =
     coverage report
 
 [testenv:flake8]
-basepython = python3.6
+basepython = python3
 commands_pre =
     mkdir -p {toxinidir}/parts/flake8
 commands =
     - isort --check-only --diff --recursive {toxinidir}/src setup.py
-    flake8 src tests setup.py {posargs}
+    flake8 src setup.py {posargs}
 deps =
     isort
     flake8