AttributeError: type object Signature has no attribute _encoding

[Barabazs]

Hi folks!

I'm running into this weird error when running my python code with ray. Basically I get AttributeError: type object 'Signature' has no attribute '_encoding'. But it works fine when I run my script without ray...

pygit2 version: v1.12.2 environment: python:3.9.16 docker container.

The error can be reproduced with the code below. Ray can be installed from PyPi: pip install ray

import pygit2
import ray
from pygit2 import Signature

def function_without_ray():
    org_name = "libgit2"
    repo_name = "pygit2"
    repo = pygit2.clone_repository(
        f"https://github.com/{org_name}/{repo_name}",
        f"/tmp/{repo_name}.git",
    )
    new_branch = repo.branches.create(
        "dummy-branch", repo.revparse_single("HEAD")
    )
    repo.checkout(new_branch)

    index = repo.index
    index.add_all()
    index.write()

    author = Signature("John Doe", "john@doe.com")

    ref = repo.head.name
    tree = index.write_tree()
    parents = [repo.head.target]

    repo.create_commit(
        ref,
        author,
        author,
        "Just a dummy commit",
        tree,
        parents,
    )

@ray.remote
def function_with_ray():
    function_without_ray()

# Comment out one of these function calls to check if it works:
ray.get(function_with_ray.remote())

function_without_ray()

[Barabazs]

EDIT: added code to reproduce the error