mirror of https://github.com/pypa/pip
93 lines
2.6 KiB
Python
93 lines
2.6 KiB
Python
# 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
|