regression in analyze regarding stdlib shadowing with PEP420 packages

[emillon]

Summary

Hi,

I've noticed a regression in ruff analyze graph.

In a PEP-420 namespace package, imports from stdlib are resolved to sibling modules (when these exist).

Concretely here's a MWE:

# pyproject.toml
[tool.ruff]
src = ["src"]
namespace-packages = ["src/example"]

# src/example/main.py
from typing import Any

x: Any = 1

# src/example/typing.py
y = 3

Results:

% uvx ruff@0.14.9 analyze graph
warning: `ruff analyze graph` is experimental and may change without warning
{
  "src/example/main.py": [],
  "src/example/typing.py": []
}
% uvx ruff@0.14.10 analyze graph
warning: `ruff analyze graph` is experimental and may change without warning
{
  "src/example/main.py": [
    "src/example/typing.py"
  ],
  "src/example/typing.py": []
}

(same behavior in 0.14.10 and 0.16.5)

This might be related to #21817, which makes sense given that adding an empty __init__.pyi fixes it.

What do you think?
Thanks!

Version

0.16.5

[MichaReiser]

Thanks for reporting. The issue here is that Ruff doesn't vendor typeshed. Therefore, it fails to resolve typeshed's typing.py.