Document that temp dir tweaks should be applied when running Pytest in parallel with Tox

[faph]

What's the problem this feature will solve?

Parallel runs of Pytest are supported only when the base temporary directory is unique for each concurrent run. For Tox 3, this is documented by way of an example here: https://tox.wiki/en/3.27.0/example/pytest.html#extended-example-change-dir-before-test-and-use-per-virtualenv-tempdir

Describe the solution you'd like

I appreciate that this really is a feature of Pytest and not Tox. However, since Tox provides a unique temporary directory per virtualenv out of the box, it may be helpful to document how this can be used to run Pytest with Tox's --parallel option.

I don't know where within the Tox 4 documentation pages this should be included though...

Alternative Solutions

Do nothing: keep the documentation as is.

Additional context

None.

[faph]

See also: pytest-dev/pytest#11790

[gaborbernat]

PR welcome 👍

[faph]

@gaborbernat Thanks. Any suggestion where about we could document this? Any existing sections/pages?

[gaborbernat]

Should go inside https://tox.wiki/en/4.12.1/faq.html

[faph]

Perfect. Let me get something drafted.