--- a/tox.ini	Tue Jan 26 18:04:00 2016 +0100
+++ b/tox.ini	Tue Dec 22 09:23:00 2015 +0100
@@ -1,5 +1,7 @@
 [tox]
-envlist = cubicweb,dataimport,devtools,entities,etwist,ext,hooks,server,sobjects,web,wsgi
+envlist =
+  py27-{cubicweb,dataimport,devtools,entities,etwist,ext,hooks,server,sobjects,web,wsgi},
+  py34-{dataimport,devtools,entities,ext,hooks,wsgi}
 
 [testenv]
 usedevelop = True
@@ -16,12 +18,18 @@
   web: -r{toxinidir}/cubicweb/web/test/requirements.txt
   wsgi: -r{toxinidir}/cubicweb/wsgi/test/requirements.txt
 commands =
-  {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/{envname}/test {posargs}
-
-[testenv:cubicweb]
-commands =
-  {envpython} -m pip install --upgrade --no-deps --quiet git+git://github.com/logilab/yapps@master#egg=yapps
-  {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/test {posargs}
+  cubicweb: {envpython} -m pip install --upgrade --no-deps --quiet git+git://github.com/logilab/yapps@master#egg=yapps
+  cubicweb: {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/test {posargs}
+  dataimport: {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/dataimport/test {posargs}
+  devtools: {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/devtools/test {posargs}
+  entities: {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/entities/test {posargs}
+  etwist: {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/etwist/test {posargs}
+  ext: {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/ext/test {posargs}
+  hooks: {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/hooks/test {posargs}
+  server: {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/server/test {posargs}
+  sobjects: {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/sobjects/test {posargs}
+  web: {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/web/test {posargs}
+  wsgi: {envpython} -c 'from logilab.common import pytest; pytest.run()' -t {toxinidir}/cubicweb/wsgi/test {posargs}
 
 [testenv:doc]
 changedir = doc