Cannot figure out how to use --config to override a value from the pyproject.toml

[jleibs]

Bug Description

Because of some aspects of how sources work in our dev build, I wanted to do something along the lines of the following:

maturin develop --config 'tool.maturin.python-source="rerun_sdk"' --manifest-path rerun_py/Cargo.toml

There's a config parser that's validating that it's proper dotted key=val notation, but none of the values I put there seem to make a difference.

Your maturin version (maturin --version)

1.5.1

Your Python version (python -V)

3.11.8

Your pip version (pip -V)

23.2.1

What bindings you're using

pyo3

Does cargo build work?

• Yes, it works

If on windows, have you checked that you aren't accidentally using unix path (those with the forward slash /)?

• Yes

Steps to Reproduce

Try building a package and overriding python-source.

[jleibs]

I don't specifically need --config to work, but more generally I want to be able to override a few things to have different values during a dev build, and was hoping this might be an answer.

[messense]

--config is a cargo specific option so it won't work for overridding values in pyproject.toml.

There are currently no option in CLI to override [tool.maturin] section in pyproject.toml.