Replace setup.py by pyproject.toml

[coroa]

The use of setup.py is being superseeded by declarations in pyproject.toml slowly.

https://packaging.python.org/en/latest/specifications/declaring-project-metadata/

Here i am migrating everything from setup.py there.

Explicit packages, package_dir and py_modules have been removed in favour of setuptools default src-layout-based "Auto-Discovery" (https://setuptools.pypa.io/en/latest/userguide/package_discovery.html#auto-discovery).

include_package_data was omitted since that is on by default.

[joaomcteixeira]

Dear @coroa

Many thanks for your contribution. I will review it asap in the next few days.

[joaomcteixeira]

Hi @coroa

I corrected some typos in the pyproject.toml file and started editing the tox.ini. Many thanks for this contribution. I won't merge yet because I want to review the whole process and update documentation as well to make sure everything is harmonized. I will keep working on your branch. Feel very welcome to continue working on this PR as you wish. Otherwise, I will finish it as I have time in the next few days.

Best,

[joaomcteixeira]

Not straightforward to configure tox with pyproject.toml, it seems many integrations between both projects are still not fully developed. Meanwhile, we continue to prepare this PR.

[coroa]

True, i haven't used tox so much previously. So, did not foresee the integration issues. Thanks for taking it along anyway. (And sorry for the typos)

[joaomcteixeira]

Thanks @coroa

I will keep working on it for the next few weeks while seeing how tox goes along with it or if it's something I am doing wrong. Sorry for any delays; very busy at work recently.

I found it difficult for me to go along without tox because it's really an excellent tool for teamwork and reproducibility.

[coroa]

All tox envs work fine for me here, except that i did not try tox -e pr, but i'm on a fairly recent python mac os x install (3.10.10).

[coroa]

On a different note, i got rid of bumpversion and check-manifest in favour of setuptools_scm and replaced isort and flake8 with ruff and black over at https://github.com/coroa/python-project-skeleton/tree/use-automatic-versioning . Since this completely takes away your versioning workflow, i do not intend to PR the whole bunch, but if your interested in bits and pieces. Feel free

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[joaomcteixeira]

Thanks very much, @coroa, for this contribution. I made all tests pass. I want to review the documentation to ensure everything is updated.

On another more philosophical note, and to keep the discussion active 😉, I understand the Python community is moving towards the pyproject.toml and some benefits exist. But, for me, it is not clear the true benefit of using the toml file strategy. With setup.py, we could configure as much as needed and run custom scripts that were useful in some cases for the packing or installation. I may be missing the big picture, though.

Also, I disagree with placing all configurations in the pyproject.toml, as is the current tendency. For example, I prefer flake8 and isort parameters in tox.ini where they are used or in their own files. Simpler to configure and easier to find, IMHO.

I may be wrong, but I see a loss of (some) capabilities. But, in this case, I will adopt this strategy because that's where the community is moving and adopting the toml is a general "new practice" rather than an opinion.

Many thanks for putting this forward. Hope soon I can finish reviewing it and merge it.
Cheers,

[coroa]

Also, I disagree with placing all configurations in the pyproject.toml, as is the current tendency. For example, I prefer flake8 and isort parameters in tox.ini where they are used or in their own files. Simpler to configure and easier to find, IMHO.

I actually was not familiar with tox enough which predisposed me against tox.ini. I thought the config there would be exclusive to the invocation by tox. ie. the flake8 linter in vscode would be behaving differently. After checking the documentation for a couple of tools (flake8 and isort), I stand corrected.

I have a slight preference for less files, so i tend to embrace the pyproject.toml strategy; but i am also still fine with separate files for the different tools. I do not see a difference between tox.ini and pyproject.toml.

It currently feels like everything would converge toward the latter eventually.

[joaomcteixeira]

I actually was not familiar with tox enough which predisposed me against tox.ini. I thought the config there would be exclusive to the invocation by tox. ie. the flake8 linter in vscode would be behaving differently. After checking the documentation for a couple of tools (flake8 and isort), I stand corrected.

Very interesting. I was not aware tools like vscode were not reading from tox.ini. I am vim user, and I don't like to have any tools/plugins incorporated when editing code. In this particular case, when I want to check the lint for the current file, I do ,k which is a custom hotkey for !tox -e lint -- % inside vim. Thus, tox runs in the background. But your argument is very valid and is reason enough to move the configuration to pyproject.toml if other editors can read from it.

I have a slight preference for less files, so i tend to embrace the pyproject.toml strategy; but i am also still fine with separate files for the different tools. I do not see a difference between tox.ini and pyproject.toml.

IMHO, the difference is that pyproject.toml is about defining the package. And tox is about the CI activities. Hence, I see flake8, black, or ruff (etc) should be defined separately from the project. Plus there is more complexity in defining such parameters in the pyproject.toml with the tool. or .init_ pre/suffixes.

It currently feels like everything would converge toward the latter eventually.

That's true. 😉 Good conversation!

[tomschr]

@joaomcteixeira Found this by accident (seems I have the tendency to leave a comment in arbitrary issues). 😉 🙈

I saw that you've use bumpversion to modify the version in the pyproject.toml file. If I'm not mistaken, this is not really necessary. The setuptools library distinguish between static information (like authors, project name etc.) and dynamic information (like versions).

You could amend the TOML file with this:

[project]
# ...
dynamic = ["version"]

[tool.setuptools.dynamic]
version = {attr = "mymodule.__version__"}

--- Taken from pypa/setuptools#3190

I have to admit, it's currently in beta so you might get some warnings.

See also https://setuptools.pypa.io/en/latest/userguide/pyproject_config.html#dynamic-metadata