[raymondginger2018-sudo]

Problem

The repository root contains a tracked __init__.py. On a case-insensitive filesystem (Windows) that makes the checkout directory itself a package whose name matches the deepcode module:

C:\...\deepcode\__init__.py     # package named "deepcode"
C:\...\deepcode\deepcode.py      # the real entry point (main, _bootstrap_logging)

pytest's default --import-mode=prepend inserts the package root on sys.path, so import deepcode binds to the checkout directory instead of deepcode.py and deepcode.main() does not exist:

AttributeError: module 'deepcode' has no attribute 'main'
AttributeError: module 'deepcode' has no attribute '_bootstrap_logging'

Any checkout literally named deepcode hits this — including a plain git clone on Windows. Upstream CI never sees it because it checks out as DeepCode (capital D), which does not match deepcode on a case-sensitive filesystem.

Reproduction

With the tree checked out at HEAD and the directory named deepcode:

python -m pytest tests/test_cli_logging_bootstrap.py tests/test_version_metadata.py -q
→ 6 failed, 1 passed

Fix

Delete the root __init__.py and mirror that in MANIFEST.in (it previously shipped include __init__.py); a comment records why the root is deliberately not a package. The package metadata lives in setup.py (py_modules = ["deepcode"] plus the deepcode=deepcode:main console script), so nothing depends on the root __init__.py.

After

python -m pytest tests/test_cli_logging_bootstrap.py tests/test_version_metadata.py -q
→ 7 passed
python -c "import deepcode; print(deepcode.__file__)"
→ ...\deepcode.py

check-manifest stays consistent because MANIFEST.in is updated in the same commit.

I did not take the alternative route of re-exporting main/_bootstrap_logging from the root __init__.py: tests/test_cli_logging_bootstrap.py monkeypatches deepcode._bootstrap_logging, and under package binding that patch would no longer reach the module global that main() reads — the test would pass while testing nothing.

[Zongwei9888]

Merged into main as ec3e4f7. Thank you @raymondginger2018-sudo — the case-insensitive-checkout shadowing was a real trap, and the reasoning for deleting the root package instead of re-exporting main from it (the monkeypatch in test_cli_logging_bootstrap.py would silently stop reaching the module global) was exactly right.