Mercurial > repos > shellac > sam_consensus_v3
diff env/lib/python3.9/site-packages/pip/_internal/distributions/base.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
---|---|
date | Mon, 22 Mar 2021 18:12:50 +0000 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/env/lib/python3.9/site-packages/pip/_internal/distributions/base.py Mon Mar 22 18:12:50 2021 +0000 @@ -0,0 +1,42 @@ +import abc + +from pip._internal.utils.typing import MYPY_CHECK_RUNNING + +if 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 + super().__init__() + self.req = req + + @abc.abstractmethod + def get_pkg_resources_distribution(self): + # type: () -> Optional[Distribution] + raise NotImplementedError() + + @abc.abstractmethod + def prepare_distribution_metadata(self, finder, build_isolation): + # type: (PackageFinder, bool) -> None + raise NotImplementedError()