40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
|
import abc
|
||
|
|
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()
|