view env/lib/python3.9/site-packages/pip/_internal/distributions/ @ 0:4f3585e2f14b draft default tip

"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author shellac
date Mon, 22 Mar 2021 18:12:50 +0000
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import abc

from pip._internal.utils.typing import MYPY_CHECK_RUNNING

    from typing import Optional

    from pip._vendor.pkg_resources import Distribution

    from pip._internal.index.package_finder import PackageFinder
    from pip._internal.req import InstallRequirement

class AbstractDistribution(metaclass=abc.ABCMeta):
    """A base class for handling installable artifacts.

    The requirements for anything installable are as follows:

     - we must be able to determine the requirement name
       (or we can't correctly handle the non-upgrade case).

     - for packages with setup requirements, we must also be able
       to determine their requirements without installing additional
       packages (for the same reason as run-time dependencies)

     - we must be able to create a Distribution object exposing the
       above metadata.
    def __init__(self, req):
        # type: (InstallRequirement) -> None
        self.req = req

    def get_pkg_resources_distribution(self):
        # type: () -> Optional[Distribution]
        raise NotImplementedError()

    def prepare_distribution_metadata(self, finder, build_isolation):
        # type: (PackageFinder, bool) -> None
        raise NotImplementedError()