Mercurial > repos > guerler > hhblits

comparison lib/python3.8/site-packages/pip/_internal/distributions/base.py @ 0:9e54283cc701 draft

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
"planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
author guerler
date Mon, 27 Jul 2020 03:47:31 -0400
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:9e54283cc701
1 import abc
2
3 from pip._vendor.six import add_metaclass
4
5 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
6
7 if MYPY_CHECK_RUNNING:
8 from typing import Optional
9
10 from pip._vendor.pkg_resources import Distribution
11 from pip._internal.req import InstallRequirement
12 from pip._internal.index.package_finder import PackageFinder
13
14
15 @add_metaclass(abc.ABCMeta)
16 class AbstractDistribution(object):
17 """A base class for handling installable artifacts.
18
19 The requirements for anything installable are as follows:
20
21 - we must be able to determine the requirement name
22 (or we can't correctly handle the non-upgrade case).
23
24 - for packages with setup requirements, we must also be able
25 to determine their requirements without installing additional
26 packages (for the same reason as run-time dependencies)
27
28 - we must be able to create a Distribution object exposing the
29 above metadata.
30 """
31
32 def __init__(self, req):
33 # type: (InstallRequirement) -> None
34 super(AbstractDistribution, self).__init__()
35 self.req = req
36
37 @abc.abstractmethod
38 def get_pkg_resources_distribution(self):
39 # type: () -> Optional[Distribution]
40 raise NotImplementedError()
41
42 @abc.abstractmethod
43 def prepare_distribution_metadata(self, finder, build_isolation):
44 # type: (PackageFinder, bool) -> None
45 raise NotImplementedError()