6ced5329b814e0fd3c397bb11dc69a82b06eb1f4
[SubU] /
1 from collections import defaultdict
2 from logging import getLogger
3 from typing import Any, DefaultDict
4
5 from pip._vendor.resolvelib.reporters import BaseReporter
6
7 from .base import Candidate, Requirement
8
9 logger = getLogger(__name__)
10
11
12 class PipReporter(BaseReporter):
13     def __init__(self) -> None:
14         self.backtracks_by_package: DefaultDict[str, int] = defaultdict(int)
15
16         self._messages_at_backtrack = {
17             1: (
18                 "pip is looking at multiple versions of {package_name} to "
19                 "determine which version is compatible with other "
20                 "requirements. This could take a while."
21             ),
22             8: (
23                 "pip is looking at multiple versions of {package_name} to "
24                 "determine which version is compatible with other "
25                 "requirements. This could take a while."
26             ),
27             13: (
28                 "This is taking longer than usual. You might need to provide "
29                 "the dependency resolver with stricter constraints to reduce "
30                 "runtime. See https://pip.pypa.io/warnings/backtracking for "
31                 "guidance. If you want to abort this run, press Ctrl + C."
32             ),
33         }
34
35     def backtracking(self, candidate: Candidate) -> None:
36         self.backtracks_by_package[candidate.name] += 1
37
38         count = self.backtracks_by_package[candidate.name]
39         if count not in self._messages_at_backtrack:
40             return
41
42         message = self._messages_at_backtrack[count]
43         logger.info("INFO: %s", message.format(package_name=candidate.name))
44
45
46 class PipDebuggingReporter(BaseReporter):
47     """A reporter that does an info log for every event it sees."""
48
49     def starting(self) -> None:
50         logger.info("Reporter.starting()")
51
52     def starting_round(self, index: int) -> None:
53         logger.info("Reporter.starting_round(%r)", index)
54
55     def ending_round(self, index: int, state: Any) -> None:
56         logger.info("Reporter.ending_round(%r, state)", index)
57
58     def ending(self, state: Any) -> None:
59         logger.info("Reporter.ending(%r)", state)
60
61     def adding_requirement(self, requirement: Requirement, parent: Candidate) -> None:
62         logger.info("Reporter.adding_requirement(%r, %r)", requirement, parent)
63
64     def backtracking(self, candidate: Candidate) -> None:
65         logger.info("Reporter.backtracking(%r)", candidate)
66
67     def pinning(self, candidate: Candidate) -> None:
68         logger.info("Reporter.pinning(%r)", candidate)