maturin expects "python" directory to exist, otherwise fails with 💥 maturin failed Caused by: No such file or directory (os error 2)

[port8080]

Bug Description

The following code:
Some(py_src) => project_root.join(py_src).normalize()?.into_path_buf(),
results in this cryptic error.

The fix is simple: the user has to create a python directory. The code should be enhanced with better logging because "No such file or directory (os error 2)" is not helpful.

Your maturin version (maturin --version)

1.7.7

Your Python version (python -V)

Python 3.13.0

Your pip version (pip -V)

pip 24.2

What bindings you're using

None

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

RUST_LOG=maturin=debug maturin build
2024-12-03T14:23:30.430629Z  INFO into_build_context: maturin::build_options: close time.busy=917ns time.idle=1.62µs
2024-12-03T14:23:30.430709Z DEBUG maturin::project_layout: Found pyproject.toml in working directory at "/Users/ajitb/hf/xet-core/hf_xet/pyproject.toml"
2024-12-03T14:23:30.430842Z DEBUG maturin::project_layout: Using cargo manifest path from working directory: "/Users/ajitb/hf/xet-core/hf_xet/Cargo.toml"
2024-12-03T14:23:30.430927Z DEBUG resolve_cargo_metadata: maturin::project_layout: Resolving cargo metadata from "/Users/ajitb/hf/xet-core/hf_xet/Cargo.toml"
2024-12-03T14:23:30.594052Z  INFO resolve_cargo_metadata: maturin::project_layout: close time.busy=163ms time.idle=666ns
💥 maturin failed
  Caused by: No such file or directory (os error 2)

[messense]

Thanks for the report!