1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
# The following comment should be removed at some point in the future.
# mypy: strict-optional=False
from __future__ import absolute_import
import logging
from pip._internal.utils.logging import indent_log
from pip._internal.utils.typing import MYPY_CHECK_RUNNING
from .req_file import parse_requirements
from .req_install import InstallRequirement
from .req_set import RequirementSet
if MYPY_CHECK_RUNNING:
from typing import Any, List, Sequence
__all__ = [
"RequirementSet", "InstallRequirement",
"parse_requirements", "install_given_reqs",
]
logger = logging.getLogger(__name__)
class InstallationResult(object):
def __init__(self, name):
# type: (str) -> None
self.name = name
def __repr__(self):
# type: () -> str
return "InstallationResult(name={!r})".format(self.name)
def install_given_reqs(
to_install, # type: List[InstallRequirement]
install_options, # type: List[str]
global_options=(), # type: Sequence[str]
*args, # type: Any
**kwargs # type: Any
):
# type: (...) -> List[InstallationResult]
"""
Install everything in the given list.
(to be called after having downloaded and unpacked the packages)
"""
if to_install:
logger.info(
'Installing collected packages: %s',
', '.join([req.name for req in to_install]),
)
installed = []
with indent_log():
for requirement in to_install:
if requirement.should_reinstall:
logger.info('Attempting uninstall: %s', requirement.name)
with indent_log():
uninstalled_pathset = requirement.uninstall(
auto_confirm=True
)
try:
requirement.install(
install_options,
global_options,
*args,
**kwargs
)
except Exception:
should_rollback = (
requirement.should_reinstall and
not requirement.install_succeeded
)
# if install did not succeed, rollback previous uninstall
if should_rollback:
uninstalled_pathset.rollback()
raise
else:
should_commit = (
requirement.should_reinstall and
requirement.install_succeeded
)
if should_commit:
uninstalled_pathset.commit()
installed.append(InstallationResult(requirement.name))
return installed
|
