Re: setuptools configuration in pyproject.toml

On Mon, 24 Sep 2018 at 16:32, Bernat Gabor <[email protected]> wrote:
>
> I'm aware this might be a controversial subject, so let's have the initial discussion about it here first for full disclosure and see what people think about it. Should setuptools support pyproject.toml as configuration source or not (alternative to setup.cfg which it already does - https://setuptools.readthedocs.io/en/latest/setuptools.html#configuring-setup-using-setup-cfg-files)?
>
> The main benefit of having this would be to decrease configuration files and have build dependencies and other types of dependencies in one location. Furthermore many other packaging projects (flit, poetry) already do define their dependencies inside pyproject.toml; so would create one unified location where to look for such in the future.
>
> The counter-argument is that "a big part of pyproject.toml was keeping that file clean" and would furthermore increase the size of that file down the line.
>
> So what do people think? Should we encourage or discourage to have a single python project file?
>
> I'm personally supporting build/code quality tools supporting pyproject.toml as their main configuration file.

If you're talking about setuptools using the `[tool.setuptools]` table
for its own configuration, then that's precisely what it's intended
for. See https://www.python.org/dev/peps/pep-0518/#tool-table. There's
no question that setuptools is a "tool" in the sense used there.

If you're talking about defining additional tables in the
pyproject.toml format, then that would require a PEP (from PEP 518
"Below we list the tables that tools are expected to
recognize/respect. Tables not specified in this PEP are reserved for
future use by other PEPs").

Paul
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