Hello Twisted devs! I wanted to give everyone a heads-up that there's an open pull request <https://github.com/twisted/twisted/pull/11656> to update the way the project is packaged. The main changes are:
1. metadata is now defined in a `pyproject.toml` file as specified by PEP 621 <https://peps.python.org/pep-0621/>/PEP 631 <https://peps.python.org/pep-0631/> 2. the `.whl` and `.tar.gz` artifacts are built by default in an isolated manner as specified by PEP 517 <https://peps.python.org/pep-0517/>/PEP 660 <https://peps.python.org/pep-0660/>, now using Hatchling rather than setuptools 3. names of optional dependency groups that contain underscores rather than hyphens are deprecated as informed by PEP 685 <https://peps.python.org/pep-0685/> 4. the interpolation <https://docs.python.org/3/library/configparser.html#interpolation-of-values> INI feature used to keep optional dependencies DRY is replaced by self-referential dependency definitions While that seems like a lot, I think the impact will be minimal. 1 is a subset of 2 so we'll ignore that, and for 3 I added a feature <https://hatch.pypa.io/latest/config/metadata/#allowing-ambiguous-features> to Hatchling to get us through the deprecation period so let's also ignore that and only focus on 2 & 4 which require certain versions of pip. pip gained support for PEP 517 in v19.0 <https://pip.pypa.io/en/stable/news/#v19-0> which was released on 2019-01-22 and has supported self-referential dependency definitions since v21.2 <https://pip.pypa.io/en/stable/news/#v21-2> which was released on 2021-07-24. My notion of things is that old distros and other situations where pip is outdated will also be using old versions of Twisted, and newer setups will either have a recent version of pip or follow best practices and use virtualenv for managing apps which populates the virtual environments with new versions of pip. I'm curious to hear others' thoughts on this and any feedback from trying out the actual branch!
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