How to configure maturin_import_hook for projects built with setuptools_rust

[padix-key]

Hi, I have a mixed Python-Cython-PyO3 project built with setuptools/setuptools_rust. To increase development speed I would like to use the maturin_import_hook. However the docs only focus on maturin-built projects (which makes sense, as it is a maturin-import-hook 😉).

However, is there a way to use this package also for setuptools-based projects and if this is possible, how would I configure maturin_import_hook.install()?

[mbway]

Currently the import hook is tightly integrated into Maturin. The project importer looks specifically for Maturin projects and calls out to Maturin to install them. It would be possible to add support for other types of projects and I would be open to contributions for this.

The advantage of installing with maturin develop (which the import hook uses) instead of re-installing the package with pip or uv is incremental compilation. Normal package installations are isolated and so build from scratch each time. I suspect that with setuptools-rust you would have to do a full install on each change? If that's the case then perhaps configuring uv and running with uv run would be convenient for your use case? see PyO3/maturin#2314 (comment)