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} tt | j ddS )a Whether to use the ``importlib.metadata`` or ``pkg_resources`` backend.
By default, pip uses ``importlib.metadata`` on Python 3.11+, and
``pkg_resourcess`` otherwise. This can be overridden by a couple of ways:
* If environment variable ``_PIP_USE_IMPORTLIB_METADATA`` is set, it
dictates whether ``importlib.metadata`` is used, regardless of Python
version.
* On Python 3.11+, Python distributors can patch ``importlib.metadata``
to add a global constant ``_PIP_USE_IMPORTLIB_METADATA = False``. This
makes pip use ``pkg_resources`` (unless the user set the aforementioned
environment variable to *True*).
_PIP_USE_IMPORTLIB_METADATA) Fr NT)
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ValueErrorboolr osenvironsys version_infoimportlib.metadatagetattrmetadata importlib r% /builddir/build/BUILDROOT/alt-python38-pip-22.2.1-2.el8.x86_64/opt/alt/python38/lib/python3.8/site-packages/pip/_internal/metadata/__init__.py _should_use_importlib_metadata s $
r' c @ s& e Zd ZU ee ed< ee ed< dS )Backend Distribution EnvironmentN)__name__
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c C s t j S )a 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.
)r r* defaultr% r% r% r& r D s )pathsr c C s t j| S )a' Get a representation of the environment specified by ``paths``.
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given import paths. The backend must build a fresh instance representing
the state of installed distributions when this function is called.
)r r*
from_paths)r3 r% r% r& r N s ) directoryr c C s t j| S )zGet the distribution metadata representation in the specified directory.
This returns a Distribution instance from the chosen backend based on
the given on-disk ``.dist-info`` directory.
)r r) from_directory)r5 r% r% r& get_directory_distributionX s r7 )wheelcanonical_namer c C s t j| |S )a 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.
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