This reverts commit fc373f5fef8c8dd1656dfdf31c14b3365a0a75bc.
See CONTRIBUTING.rst which has tools setup guidelines for users. They
are expected to install both poetry and poethepoet globally in their
system.
This reverts commit c3b6f07c4336e6639e4597a800700820155ad294.
This commit hardcoded the paths that `isort` and `black` checks. This
means that the `check-format` job will act on the entire codebase
instead of only changed files. We need to define a `path` argument with
a default value in order to achieve the above.
Regarding "." vs "beets beetsplug test", the intention behind using "."
was to also check python files like `docs/conf.py` and
`extra/release.py` which I presume we would also want to format
properly.
Unfortunately tox does not play very nicely with Poetry. Tox was mostly
useful since it managed virtual environments, however now this is done
by Poetry.
Thus we do not anymore need it since we can run our commands using
`poetry run`. I have extended the internal helper tool 'project' with
those commands that have previously been run using tox.
