import socket
from typing import Protocol


class RepoPathLike(Protocol):
    local_path: str | None
    host_paths: dict


def resolve_repo_path(repo: RepoPathLike, host: str | None = None) -> str | None:
    selected_host = host or socket.gethostname()
    host_paths = repo.host_paths or {}
    return host_paths.get(selected_host) or repo.local_path