| import abc |
| |
| from pip._internal.index.package_finder import PackageFinder |
| from pip._internal.metadata.base import BaseDistribution |
| 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: InstallRequirement) -> None: |
| super().__init__() |
| self.req = req |
| |
| @abc.abstractmethod |
| def get_metadata_distribution(self) -> BaseDistribution: |
| raise NotImplementedError() |
| |
| @abc.abstractmethod |
| def prepare_distribution_metadata( |
| self, finder: PackageFinder, build_isolation: bool |
| ) -> None: |
| raise NotImplementedError() |
