Support pyproject.toml

[brettcannon]

As the co-author of the standard for that file, I don't think this request coming from me will be much of a shock. 😉

[vpoulailleau]

The first time I made a pyproject.toml, I used https://github.com/dephell/dephell to convert my old setup.[py|cfg] to a pyproject.toml. For a jump start, that tool may help you.

BTW, I use https://python-poetry.org/ that has a clean CLI, and a good dependency resolver (disclaimer: I only tried poetry, but it's really great).

@brettcannon Thanks for this PEP 518 (and the explanations you gave at https://testandcode.com/52)

[nedbat]

Yes, I knew this request would come. It feels strange to need to install a third-party library in order to support a PEP, but there we are.

@vpoulailleau The request here (unless I am mistaken) is for scriv to read pyproject.toml files, not to have one for itself.

[vpoulailleau]

@nedbat Ah, ok… I assume this is to use pyproject.toml as a configuration file for scriv…

But still, you might merge MANIFEST.in, setup.cfg, setup.py, tox.ini, pylintrc (not sure for this file) into pyproject.toml and use the poetry workflow (poetry update, poetry build, poetry publish, poetry run). It's just a suggestion, do as you want since it's your project.

[brettcannon]

Yes, the request is for scriv to read from pyproject.toml.

And you're not the first person to make that comment about "why isn't there a TOML parser in the stdlib?", but I made that decision consciously. Ignoring the whole "which format is better" quagmire and focusing on the stdlib bit, TOML is at v1.0.0-rc.2 and adding a parser when the final 1.0 spec is close to being done seems unnecessarily rushed (the expectation is the end of the year and Pradyun who is a pip developer is a co-maintainer of TOML, so we will know when it occurs). But more importantly, when I start the discussion to add a TOML parser to the stdlib I know it will not only launch a massive discussion about which parser to pull in (or whether to write a new one from scratch), but it will start an even larger discussion about what the future of the stdlib even is.

So when TOML hits 1.0 it means I am going to lose months of my mental capacity to several centi-threads, and that's not something I'm running head-first towards while I try to clear out my current backlog. 😅

[webknjaz]

It feels strange to need to install a third-party library in order to support a PEP, but there we are.

You could add it as an extra. This would mitigate the need to have an unnecessary dependency for folks who don't really need it.

[nedbat]

There's a [toml] extra, though if you are using pyproject.toml, you probably already have the toml module available anyway.

[nedbat]

This is now available in scriv 0.10.0