.pth files seem to be ignored in the venv site-packages directory

[ipkiss42]

Describe the bug
.pth files seem to be ignored in the venv site-packages directory

To Reproduce
In <venv>/lib/pythonX.Y/site-packages, run the following commands:

mkdir bar
touch bar/__init__.py
echo bar > bar.pth

Then simply use import bar in a python file and run pyright

Expected behavior

No error

Screenshots or Code

$ pyright --verbose
Loading configuration file at /tmp/pyright2/root/pyrightconfig.json
Assuming Python version 3.8
Assuming Python platform Linux
No include entries specified; assuming /tmp/pyright2/root
Auto-excluding **/node_modules
Auto-excluding **/__pycache__
Auto-excluding .git
venv python3.8 subdirectory not found in venv path /tmp/pyright2.
stubPath /tmp/pyright2/root/typings is not a valid directory.
Searching for source files
Found 1 source file
Could not import 'bar' in file '/tmp/pyright2/root/src/foo/__init__.py'
  Looking for typeshed stdlib path
  Attempting to resolve using root path '/tmp/node_modules/pyright/dist/typeshed-fallback/stdlib'
  Typeshed path not found
  Looking in stubPath '/tmp/pyright2/root/typings'
  Attempting to resolve using root path '/tmp/pyright2/root/typings'
  Looking in root directory of execution environment '/tmp/pyright2/root/src'
  Attempting to resolve using root path '/tmp/pyright2/root/src'
  Looking in python search path '/tmp/python-3.8/lib/python3.8'
  Attempting to resolve using root path '/tmp/python-3.8/lib/python3.8'
  Attempting to resolve using root path '/tmp/python-3.8/lib/python3.8'
  Looking in python search path '/tmp/python-3.8/lib/python3.8/lib-dynload'
  Attempting to resolve using root path '/tmp/python-3.8/lib/python3.8/lib-dynload'
  Attempting to resolve using root path '/tmp/python-3.8/lib/python3.8/lib-dynload'
  Looking in python search path '/tmp/python-3.8/lib/python3.8/site-packages'
  Attempting to resolve using root path '/tmp/python-3.8/lib/python3.8/site-packages'
  Attempting to resolve using root path '/tmp/python-3.8/lib/python3.8/site-packages'
  Looking for typeshed path
  Looking for typeshed stubs path
  Typeshed path not found
/tmp/pyright2/root/src/foo/__init__.py
  1:8 - error: Import "bar" could not be resolved (reportMissingImports)
1 error, 0 warnings, 0 infos
Completed in 0.525sec

VS Code extension or command-line

$ pyright --version
pyright 1.1.109

Additional context
My undersanding from https://docs.python.org/3/library/site.html is that the .pth file should be processed.

[jakebailey]

See also microsoft/pylance-release#78 microsoft/pylance-release#78 (comment)

Editable installs / pth files work, so long as the they add is outside the workspace.

[erictraut]

More importantly, refer to #1473

[jakebailey]

Ah, yes, they appear to be using the venv setting, which does not use python calls to get search paths. I bet it'd work via normal interpreter paths.

[ipkiss42]

Thanks for the quick responses and the pointers!

You are right, I was using a venv (outside of the workspace). After removing it and hacking $PATH to point to the same Python instance, the error disappeared.

Unfortunately, I don't think I can use the same workaround as in #1473 (select the interpreter "globally") because I have to use different venvs for different execution environments.

[erictraut]

I've added support for ".pth" files, so this will work in the next release.

[erictraut]

This is addressed in Pyright 1.1.114, which I just published. It will also be in the next release of Pylance.

[ipkiss42]

Awesome, thank you!

[ipkiss42]

Sorry for not trying it out earlier, but I still have the same issue with Pyright 1.1.117 (using a venv pointing outside the workspace).

Was that use case supposed to be fixed by the changes in version 1.1.14?

[erictraut]

If you think that the ".pth" file support isn't working in your case, please file a new bug with logs.