scip-python index fatally errors when using 3.10 stdlib features

[kevinxu12]

The scip-python index command is fatally crashing on our python repository.

Minimal Error Repro

ParamSpec is available in the standard typing module post 3.10

from typing import ParamSpec
from collections.abc import Callable

P = ParamSpec("P")

def decorator(func: Callable[P, None]) -> Callable[P, None]:
    pass

class BaseFactory:
    @classmethod
    @decorator
    def create(cls, *args, **kwargs):
        return super().create(*args, **kwargs)

class ChildFactory(BaseFactory):
    @classmethod
    def create(cls, *args, **kwargs):
        return super().create(*args, **kwargs)

Command:

npx @sourcegraph/scip-python index --cwd ${pathToIndexRoot} --output ${scipFile}

Environment:

Python 3.10.17

Actual error:

Experienced Fatal Error While Indexing:\nPlease create an issue at github.com/sourcegraph/scip-python: {\n  currentFilepath: '/Users/kevinxu/Documents/work/detail/packages/codetools/src/test_data/sample_python_repo/factories/deployment.py',\n  error: TypeError: Cannot read properties of undefined (reading 'node')\n      at L.getFunctionRelationships (/Users/kevinxu/Documents/work/detail/node_modules/.pnpm/@sourcegraph+scip-python@0.6.0_@types+node@22.13.4_typescript@5.7.3/node_modules/@sourcegraph/scip-python/dist/scip-python.js:1:83363)\n      at L.visitFunction (/Users/kevinxu/Documents/work/detail/node_modules/.pnpm/@sourcegraph+scip-python@0.6.0_@types+node@22.13.4_typescript@5.7.3/

Thought

• Do we need to re-sync the typeshed-fallback stubs (they haven't been updated in 2 years)?

[linear]

OSS-24172 scip-python index fatally errors when using newer python stdlib features