Just released tox-1.7.0 (finally), the generic virtualenv-based test runner for Python. It contains a lot of fixes and improvements although there are some bugs remaining. While a lot of pull requests are thankfully offered i could use some more co-maintaining/reviewing to allow for some faster progress. Anyway, to install to 1.7.0 : pip install -U tox and to look at the docs: https://testrun.org/tox/latest/ have fun, holger 1.7.0 --------- - don't lookup "pip-script" anymore but rather just "pip" on windows as this is a pip implementation detail and changed with pip-1.5. It might mean that tox-1.7 is not able to install a different pip version into a virtualenv anymore. - drop Python2.5 compatibility because it became too hard due to the setuptools-2.0 dropping support. tox now has no support for creating python2.5 based environments anymore and all internal special-handling has been removed. - merged PR81: new option --force-dep which allows to override tox.ini specified dependencies in setuptools-style. For example "--force-dep 'django<1.6'" will make sure that any environment using "django" as a dependency will get the latest 1.5 release. Thanks Bruno Oliveria for the complete PR. - merged PR125: tox now sets "PYTHONHASHSEED" to a random value and offers a "--hashseed" option to repeat a test run with a specific seed. You can also use --hashsheed=notset to instruct tox to leave the value alone. Thanks Chris Jerdonek for all the work behind this. - fix issue132: removing zip_safe setting (so it defaults to false) to allow installation of tox via easy_install/eggs. Thanks Jenisys. - fix issue126: depend on virtualenv>=1.11.2 so that we can rely (hopefully) on a pip version which supports --pre. (tox by default uses to --pre). also merged in PR84 so that we now call "virtualenv" directly instead of looking up interpreters. Thanks Ionel Maries Cristian. This also fixes issue140. - fix issue130: you can now set install_command=easy_install {opts} {packages} and expect it to work for repeated tox runs (previously it only worked when always recreating). Thanks jenisys for precise reporting. - fix issue129: tox now uses Popen(..., universal_newlines=True) to force creation of unicode stdout/stderr streams. fixes a problem on specific platform configs when creating virtualenvs with Python3.3. Thanks Jorgen Schäfer or investigation and solution sketch. - fix issue128: enable full substitution in install_command, thanks for the PR to Ronald Evers - rework and simplify "commands" parsing and in particular posargs substitutions to avoid various win32/posix related quoting issues. - make sure that the --installpkg option trumps any usedevelop settings in tox.ini or - introduce --no-network to tox's own test suite to skip tests requiring networks - introduce --sitepackages to force sitepackages=True in all environments. - fix issue105 -- don't depend on an existing HOME directory from tox tests.