[openstack-dev] [nova] Shared envdir across tox environments

Stephen Finucane sfinucan at redhat.com
Thu Jun 28 15:18:37 UTC 2018


Just a quick heads up that an upcoming change to nova's 'tox.ini' will
change the behaviour of multiple environments slightly.

  https://review.openstack.org/#/c/534382/9

With this change applied, tox will start sharing environment
directories (e.g. '.tox/py27') among environments with identical
requirements and Python versions. This will mean you won't need to
download dependencies for every environment, which should massively
reduce the amount of time taken to (re)initialize many environments and
 save a bit of disk space to boot. This shouldn't affect most people
but it could affect people that use some fancy tooling that depends on
these directories. If this _is_ going to affect you, be sure to make
your concerns known on the review sooner rather than later so we can
resolve said concerns.

Cheers,
Stephen



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