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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)
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