39 lines
1.2 KiB
Python
39 lines
1.2 KiB
Python
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import abc
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from typing import Optional
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from pip._vendor.pkg_resources import Distribution
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from pip._internal.index.package_finder import PackageFinder
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from pip._internal.req import InstallRequirement
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class AbstractDistribution(metaclass=abc.ABCMeta):
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"""A base class for handling installable artifacts.
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The requirements for anything installable are as follows:
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- we must be able to determine the requirement name
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(or we can't correctly handle the non-upgrade case).
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- for packages with setup requirements, we must also be able
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to determine their requirements without installing additional
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packages (for the same reason as run-time dependencies)
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- we must be able to create a Distribution object exposing the
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above metadata.
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"""
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def __init__(self, req: InstallRequirement) -> None:
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super().__init__()
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self.req = req
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@abc.abstractmethod
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def get_pkg_resources_distribution(self) -> Optional[Distribution]:
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raise NotImplementedError()
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@abc.abstractmethod
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def prepare_distribution_metadata(
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self, finder: PackageFinder, build_isolation: bool
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) -> None:
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raise NotImplementedError()
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