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from pip._vendor.resolvelib.providers import AbstractProvider
from pip._internal.utils.typing import MYPY_CHECK_RUNNING
if MYPY_CHECK_RUNNING:
from typing import Any, Optional, Sequence, Tuple, Union
from pip._internal.req.req_install import InstallRequirement
from .base import Requirement, Candidate
from .factory import Factory
class PipProvider(AbstractProvider):
def __init__(
self,
factory, # type: Factory
ignore_dependencies, # type: bool
):
# type: (...) -> None
self._factory = factory
self._ignore_dependencies = ignore_dependencies
def get_install_requirement(self, c):
# type: (Candidate) -> Optional[InstallRequirement]
return c.get_install_requirement()
def identify(self, dependency):
# type: (Union[Requirement, Candidate]) -> str
return dependency.name
def get_preference(
self,
resolution, # type: Optional[Candidate]
candidates, # type: Sequence[Candidate]
information # type: Sequence[Tuple[Requirement, Candidate]]
):
# type: (...) -> Any
# Use the "usual" value for now
return len(candidates)
def find_matches(self, requirement):
# type: (Requirement) -> Sequence[Candidate]
return requirement.find_matches()
def is_satisfied_by(self, requirement, candidate):
# type: (Requirement, Candidate) -> bool
return requirement.is_satisfied_by(candidate)
def get_dependencies(self, candidate):
# type: (Candidate) -> Sequence[Requirement]
if self._ignore_dependencies:
return []
return candidate.get_dependencies()