maturin failed: Failed to normalize python source path python

[yesint]

Bug Description

When building a package pymolar from source distribution (downloaded from pypi) maturing fails with error "Failed to normalize python source path python".
If the same package is built locally (without downloading from pypi) everything works correctly.

Your maturin version (maturin --version)

1.8.2

Your Python version (python -V)

3.12.3

Your pip version (pip -V)

24.0

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

1. Run $ pip3 install pymolar --verbose. This doesn't work:

$ pip3 install pymolar --verbose
Using pip 24.0 from /home/semen/work/Projects/molar/molar_python/venv/lib/python3.12/site-packages/pip (python 3.12)
Collecting pymolar
  Downloading pymolar-0.8.1.tar.gz (3.2 MB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 3.2/3.2 MB 8.0 MB/s eta 0:00:00
  Running command pip subprocess to install build dependencies
  Collecting maturin<2.0,>=1.5
    Using cached maturin-1.8.2-py3-none-manylinux_2_12_x86_64.manylinux2010_x86_64.musllinux_1_1_x86_64.whl.metadata (16 kB)
  Using cached maturin-1.8.2-py3-none-manylinux_2_12_x86_64.manylinux2010_x86_64.musllinux_1_1_x86_64.whl (8.2 MB)
  Installing collected packages: maturin
  Successfully installed maturin-1.8.2
  Installing build dependencies ... done
  Running command Getting requirements to build wheel
  Getting requirements to build wheel ... done
  Running command Preparing metadata (pyproject.toml)
  💥 maturin failed
    Caused by: Failed to normalize python source path `python`
    Caused by: No such file or directory (os error 2)
  Error running maturin: Command '['maturin', 'pep517', 'write-dist-info', '--metadata-directory', '/tmp/pip-modern-metadata-k3a4vbsz', '--interpreter', '/home/semen/work/Projects/molar/molar_python/venv/bin/python3']' returned non-zero exit status 1.
  Checking for Rust toolchain....
  Running `maturin pep517 write-dist-info --metadata-directory /tmp/pip-modern-metadata-k3a4vbsz --interpreter /home/semen/work/Projects/molar/molar_python/venv/bin/python3`
  error: subprocess-exited-with-error
  
  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> See above for output.
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  full command: /home/semen/work/Projects/molar/molar_python/venv/bin/python3 /home/semen/work/Projects/molar/molar_python/venv/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py prepare_metadata_for_build_wheel /tmp/tmprkb4gtab
  cwd: /tmp/pip-install-52ib24gw/pymolar_4793aab43205470abe09961cd7e9cfb8
  Preparing metadata (pyproject.toml) ... error
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

2. Building exactly the same package locally without downloading from pypi works fine:
   maturin sdist && pip install . runs without any problems:

...
Successfully installed pymolar-0.8.1

The version in pypi is exactly the same sdist which is generated locally. Here is the command used to upload the package to pypi:

maturin sdist
maturin upload <path reported by previous command>/pymolar-0.8.1.tar.gz -r pypi -u __token__  -p <secret>