Replace `toml` by `tomllib`?

[icemac]

The toml project does not seem to be that alive. (See uiri/toml#343 which could help us here but it has no comments – like many other PRs.)

According to pypa/pip#10035 pip is switching to tomli which even has support for version 1 of the TOML standard.

[dataflake]

I have no opinion on that, I don't use toml anywhere outside of this project. Either way is fine.

[icemac]

Even pep517 (the project to support pyproject.toml) now uses tomli, see https://github.com/pypa/pep517/blob/master/pyproject.toml.

I am going look into switching to tomli the next couple of days.

[icemac]

Python 3.11 will include a toml parser, so we could wait until its final release and then switch.

[dataflake]

That sounds like a great plan - anything that cuts reliance on external libraries is a win.

[icemac]

See https://github.com/zopefoundation/meta/blob/master/config/shared/toml_encoder.py if it can be removed or changed after switching to Python 3.11.

[dataflake]

I don't mind requiring Python 3.11 from now on to run the script.

[mgedmin]

+1 for depending on tomli with a ; python_version < "3.11" constraint

+0.5 for depending on stdlib tomllib and requiring python 3.11, in which case I would also like the shebang to request python3.11 specifically, as the current #!/usr/bin/env python3 will translate to 3.10 on my Ubuntu 20.10 system