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from typing import List, Optional
from .base import BaseDistribution, BaseEnvironment, FilesystemWheel, MemoryWheel, Wheel
__all__ = [
"BaseDistribution",
"BaseEnvironment",
"FilesystemWheel",
"MemoryWheel",
"Wheel",
"get_default_environment",
"get_environment",
"get_wheel_distribution",
]
def get_default_environment() -> BaseEnvironment:
"""Get the default representation for the current environment.
This returns an Environment instance from the chosen backend. The default
Environment instance should be built from ``sys.path`` and may use caching
to share instance state accorss calls.
"""
from .pkg_resources import Environment
return Environment.default()
def get_environment(paths: Optional[List[str]]) -> BaseEnvironment:
"""Get a representation of the environment specified by ``paths``.
This returns an Environment instance from the chosen backend based on the
given import paths. The backend must build a fresh instance representing
the state of installed distributions when this function is called.
"""
from .pkg_resources import Environment
return Environment.from_paths(paths)
def get_wheel_distribution(wheel: Wheel, canonical_name: str) -> BaseDistribution:
"""Get the representation of the specified wheel's distribution metadata.
This returns a Distribution instance from the chosen backend based on
the given wheel's ``.dist-info`` directory.
:param canonical_name: Normalized project name of the given wheel.
"""
from .pkg_resources import Distribution
return Distribution.from_wheel(wheel, canonical_name)