I seem to be bit by the same `typing extensions` missing imp

Question

I seem to be bit by the same `typing extensions` missing import from Pants after a new bootstrap on 2 11 0rc1 ``` Step 8 9 + pants pants config files=pants ci toml changed since=origin master changed dependees=transitive test Step 8 9 File home buildagent cache pants setup bootstrap Linux x86 64 2 11 0rc1 py38 lib python3 8 site packages pants util dirutil py line 18 in lt module gt Step 8 9 from typing extensions import Literal Step 8 9 ModuleNotFoundError No module named typing extensions ```

bitter-ability-32190 · Answer

I have a suspicion that this only occurs when the bootstrap is done in a subprocess of an existing Python process with `typing extensions` in it

bitter-ability-32190 · Answer

If I remove ` quiet` from the `pip install` in the bootstrap script ```Requirement already satisfied typing extensions==4 0 1 in some path to typing extensions from pantsbuild pants==2 11 0rc1 4 0 1 ``` Should the bootstrap script use ``` I ignore installed Ignore the installed packages overwriting them This can break your system if the existing package is of a different version or was installed with a different package manager ```

bitter-ability-32190 · Answer

bitter-ability-32190 · Answer

bitter-ability-32190 · Answer

I m gonna apply my PR locally to unblock my work task If < hundreds father 404> or < enough analyst 54434> or < polite garden 50641> has a free cycle to quickly look at the PR to ensure I m not doing something dumb I d greatly appreciate it heart

enough-analyst-54434 · Answer

I took a look Your fix is probably fine but this is another case for me of no clue what s actually going on here I never ever like that

bitter-ability-32190 · Answer

Looks like `pip` is using `PYTHONPATH` and thinking deps are installed

bitter-ability-32190 · Answer

enough-analyst-54434 · Answer

Ah MUCH better So then should PYTHONPATH just be unset We already scrub PEX env vars to avoid contamination

bitter-ability-32190 · Answer

That would also work

bitter-ability-32190 · Answer

I think

enough-analyst-54434 · Answer

It definitely would work and it would actually make sense locally The current fix makes no sense locally as pointed out in my PR comments