<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">from typing import Callable, List, Optional

from pip._internal.req.req_install import InstallRequirement
from pip._internal.req.req_set import RequirementSet

InstallRequirementProvider = Callable[
    [str, Optional[InstallRequirement]], InstallRequirement
]


class BaseResolver:
    def resolve(
        self, root_reqs: List[InstallRequirement], check_supported_wheels: bool
    ) -&gt; RequirementSet:
        raise NotImplementedError()

    def get_installation_order(
        self, req_set: RequirementSet
    ) -&gt; List[InstallRequirement]:
        raise NotImplementedError()
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