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pip install <.whl file> installs dist_info but doesn't actually install the package

I'm trying change my package over from using setup.py to using pyproject.toml and setup.cfg.

My setup.cfg is roughly as follows:

[metadata]
name = our_name
version = 0.1.1
author = me

[options]
install_requires =
    networkx >= 3.0

My code is all under src, and I'm relying on the automatic src-layout discovery mechanism.

When I run

python -m build

it generates a proper wheel file (dist/our_name-0.1.1-py3-none-any.whl). When I unpack that wheel file, everything is in there properly - it seems to have discovered all my code correctly.

However, when I install it (pip install dist/our_name*.whl), only the distribution info directory shows up in site-packages. Because the dist info is there, pip list shows it as being there, but because the actual module directory is missing, I can't import anything from my module elsewhere, or do anything with it.

Any clue what I'm doing wrong?

Addendum: Per sinoroc's comment: pyproject.toml:

[build-system]
requires = ["setuptools"]
build-backend = "setuptools.build_meta"

project structure:

README.md
requirements.txt
src
  __init__.py
  module_1
    __init__.py
    foo.py
  module_2
    __init__.py
    bar.py

Wheel contents:

__init.py__
our_name-0.1.1.dist-info
  METADATA
  RECORD
  top_level.txt
  WHEEL
module_1
  __init__.py
  foo.py
module_2
  __init__.py
  bar.py


source https://stackoverflow.com/questions/75828200/pip-install-whl-file-installs-dist-info-but-doesnt-actually-install-the-pack

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