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import logging
from collections import OrderedDict
from typing import Dict, List
from pip._vendor.packaging.specifiers import LegacySpecifier
from pip._vendor.packaging.utils import canonicalize_name
from pip._vendor.packaging.version import LegacyVersion
from pip._internal.req.req_install import InstallRequirement
from pip._internal.utils.deprecation import deprecated
logger = logging.getLogger(__name__)
class RequirementSet:
def __init__(self, check_supported_wheels: bool = True) -> None:
"""Create a RequirementSet."""
self.requirements: Dict[str, InstallRequirement] = OrderedDict()
self.check_supported_wheels = check_supported_wheels
self.unnamed_requirements: List[InstallRequirement] = []
def __str__(self) -> str:
requirements = sorted(
(req for req in self.requirements.values() if not req.comes_from),
key=lambda req: canonicalize_name(req.name or ""),
)
return " ".join(str(req.req) for req in requirements)
def __repr__(self) -> str:
requirements = sorted(
self.requirements.values(),
key=lambda req: canonicalize_name(req.name or ""),
)
format_string = "<{classname} object; {count} requirement(s): {reqs}>"
return format_string.format(
classname=self.__class__.__name__,
count=len(requirements),
reqs=", ".join(str(req.req) for req in requirements),
)
def add_unnamed_requirement(self, install_req: InstallRequirement) -> None:
assert not install_req.name
self.unnamed_requirements.append(install_req)
def add_named_requirement(self, install_req: InstallRequirement) -> None:
assert install_req.name
project_name = canonicalize_name(install_req.name)
self.requirements[project_name] = install_req
def has_requirement(self, name: str) -> bool:
project_name = canonicalize_name(name)
return (
project_name in self.requirements
and not self.requirements[project_name].constraint
)
def get_requirement(self, name: str) -> InstallRequirement:
project_name = canonicalize_name(name)
if project_name in self.requirements:
return self.requirements[project_name]
raise KeyError(f"No project with the name {name!r}")
@property
def all_requirements(self) -> List[InstallRequirement]:
return self.unnamed_requirements + list(self.requirements.values())
@property
def requirements_to_install(self) -> List[InstallRequirement]:
"""Return the list of requirements that need to be installed.
TODO remove this property together with the legacy resolver, since the new
resolver only returns requirements that need to be installed.
"""
return [
install_req
for install_req in self.all_requirements
if not install_req.constraint and not install_req.satisfied_by
]
def warn_legacy_versions_and_specifiers(self) -> None:
for req in self.requirements_to_install:
version = req.get_dist().version
if isinstance(version, LegacyVersion):
deprecated(
reason=(
f"pip has selected the non standard version {version} "
f"of {req}. In the future this version will be "
f"ignored as it isn't standard compliant."
),
replacement=(
"set or update constraints to select another version "
"or contact the package author to fix the version number"
),
issue=12063,
gone_in="24.0",
)
for dep in req.get_dist().iter_dependencies():
if any(isinstance(spec, LegacySpecifier) for spec in dep.specifier):
deprecated(
reason=(
f"pip has selected {req} {version} which has non "
f"standard dependency specifier {dep}. "
f"In the future this version of {req} will be "
f"ignored as it isn't standard compliant."
),
replacement=(
"set or update constraints to select another version "
"or contact the package author to fix the version number"
),
issue=12063,
gone_in="24.0",
)