Support pyproject.toml for configuration

[Dr-ZeeD]

I would love to see support for pyproject.toml for the configuration as, e.g., black does

[IanLee1521]

@ZeeD26 - would you be willing to submit a PR?

[sigmavirus24]

@IanLee1521 the configuration management in this project is an abysmal nightmare. Until someone has time to do serious refactoring, I strongly advise against accepting this as a feature.

[IanLee1521]

Good point.

[asears]

Is there more traction now for pyproject.toml format? Seems more prevalent on Github. We are looking at Poetry and this would be useful to have central configuration.

[sigmavirus24]

Not really, no

[carstencodes]

Hi, I must agree to @sigmavirus24, the configuration is really messed up, but I think I found a simple and backward compliant way of adding this feature.

The idea is to read the configuration from the pyproject.toml into a dictionary and add it to the configparser object.

To keep the current behavior, that no dependencies must be used, the feature is added as an extra.

There are still some things to do before #1007 can be merged:

• Fallback mode: Read data from setup.cfg/tox.ini if no data is found in pyproject.toml
• Add Unit tests for pyproject.toml

Please tell me, what you think.

[pzelnip]

I'm not clear from the discussion: if someone were to implement pyproject.toml support (perhaps via the idea that @carstencodes suggested) would that be welcomed as a contribution? If yes, then it would be appreciated to indicate that clearly so as to encourage a contribution. If not, then I'd suggest this be closed so as to make it clear the format will not be supported (and if that decision is reversed the issue can always be reopened).

[carstencodes]

I'll try to add the missing parts on the upcoming weekend. Then it's up to the maintainers to merge or reject this PR.

As we can see in PyCQA/flake8#234, supporting this issue might be hard to accomplish. Since discussion about pyproject.toml support is too heated for some projects (see flake8), it might be a good idea to wait for a toml parser in python (see https://bugs.python.org/issue40059).

Or to use a workaround, like I did with carstencodes/flake518.

[sigmavirus24]

If not, then I'd suggest this be closed

Good idea