Log message:
py-importlib-metadata: updated to 6.1.0

v6.1.0
* ``packages_distributions`` now honors packages and modules
  with Python modules that not ``.py`` sources (e.g. ``.pyc``,
  ``.so``).

v6.0.1
* Expand protocol for ``PackageMetadata.get_all`` to match
  the upstream implementation of ``email.message.Message.get_all``
  in python/typeshed-9620.

v6.0.0
* Declared ``Distribution`` as an abstract class, enforcing
  definition of abstract methods in instantiated subclasses. It's no
  longer possible to instantiate a ``Distribution`` or any subclasses
  unless they define the abstract methods.

  Please comment in the issue if this change breaks any projects.
  This change will likely be rolled back if it causes significant
  disruption.

Log message:
*: use PYTHON_VERSION instead of _PYTHON_VERSION

Log message:
py-importlib-metadata: update DESCR to match present reality

Log message:
Instead of depending on setuptools_scm, copy the version number of
PKG-INFO to setup.cfg directly.

Log message:
py-importlib-metadata: updated to 4.12.0

v4.12.0
* py-93259: Now raise ``ValueError`` when ``None`` or an empty
  string are passed to ``Distribution.from_name`` (and other
  callers).

Log message:
py-importlib-metadata: switch to egg to avoid dependency hell

Log message:
py-importlib-metadata: add missing wheel dependency

Log message:
py-importlib-metadata: updated to 4.11.3

v4.11.3
* Removed cast of path items in FastPath, not needed.

v4.11.2
* Fixed bug where ``EntryPoint.extras`` was returning
  match objects and not the extras strings.

v4.11.1
* In ``Distribution.requires`` for egg-info, if ``requires.txt``
  is empty, return an empty list.

v4.11.0
* bpo-46246: Added ``__slots__`` to ``EntryPoints``.

v4.10.2
* Avoid leaking ``method_name`` in ``DeprecatedList``.

Log message:
py-importlib-metadata: fix dependencies and test-dependencies

Bump PKGREVISION.

Log message:
py-importlib-metadata: update to 4.10.1.

v4.10.1
=======

* #361: Avoid potential REDoS in ``EntryPoint.pattern``.

v4.10.0
=======

* #354: Removed ``Distribution._local`` factory. This
  functionality was created as a demonstration of the
  possible implementation. Now, the
  `pep517 <https://pypi.org/project/pep517>`_ package
  provides this functionality directly through
  `pep517.meta.load \ 
<https://github.com/pypa/pep517/blob/a942316305395f8f757f210e2b16f738af73f8b8/pep517/meta.py#L63-L73>`_.

v4.9.0
======

* Require Python 3.7 or later.

v4.8.3
======

* #357: Fixed requirement generation from egg-info when a
  URL requirement is given.

v4.8.2
======

v2.1.2
======

* #353: Fixed discovery of distributions when path is empty.

v4.8.1
======

* #348: Restored support for ``EntryPoint`` access by item,
  deprecating support in the process. Users are advised
  to use direct member access instead of item-based access::

  - ep[0] -> ep.name
  - ep[1] -> ep.value
  - ep[2] -> ep.group
  - ep[:] -> ep.name, ep.value, ep.group

v4.8.0
======

* #337: Rewrote ``EntryPoint`` as a simple class, still
  immutable and still with the attributes, but without any
  expectation for ``namedtuple`` functionality such as
  ``_asdict``.

v4.7.1
======

* #344: Fixed regression in ``packages_distributions`` when
  neither top-level.txt nor a files manifest is present.

v4.7.0
======

* #330: In ``packages_distributions``, now infer top-level
  names from ``.files()`` when a ``top-level.txt``
  (Setuptools-specific metadata) is not present.

v4.6.4
======

* #334: Correct ``SimplePath`` protocol to match ``pathlib``
  protocol for ``__truediv__``.

v4.6.3
======

* Moved workaround for #327 to ``_compat`` module.

v4.6.2
======

* bpo-44784: Avoid errors in test suite when
  DeprecationWarnings are treated as errors.

v4.6.1
======

* #327: Deprecation warnings now honor call stack variance
  on PyPy.

v4.6.0
======

* #326: Performance tests now rely on
  `pytest-perf <https://pypi.org/project/pytest-perf>`_.
  To disable these tests, which require network access
  and a git checkout, pass ``-p no:perf`` to pytest.

v4.5.0
======

* #319: Remove ``SelectableGroups`` deprecation exception
  for flake8.

v4.4.0
======

* #300: Restore compatibility in the result from
  ``Distribution.entry_points`` (``EntryPoints``) to honor
  expectations in older implementations and issuing
  deprecation warnings for these cases:

  - ``EntryPoints`` objects are once again mutable, allowing
    for ``sort()`` and other list-based mutation operations.
    Avoid deprecation warnings by casting to a
    mutable sequence (e.g.
    ``list(dist.entry_points).sort()``).

  - ``EntryPoints`` results once again allow
    for access by index. To avoid deprecation warnings,
    cast the result to a Sequence first
    (e.g. ``tuple(dist.entry_points)[0]``).

v4.3.1
======

* #320: Fix issue where normalized name for eggs was
  incorrectly solicited, leading to metadata being
  unavailable for eggs.

v4.3.0
======

* #317: De-duplication of distributions no longer requires
  loading the full metadata for ``PathDistribution`` objects,
  entry point loading performance by ~10x.

v4.2.0
======

* Prefer f-strings to ``.format`` calls.

v4.1.0
======

* #312: Add support for metadata 2.2 (``Dynamic`` field).

* #315: Add ``SimplePath`` protocol for interface clarity
  in ``PathDistribution``.

v4.0.1
======

* #306: Clearer guidance about compatibility in readme.

v4.0.0
======

* #304: ``PackageMetadata`` as returned by ``metadata()``
  and ``Distribution.metadata()`` now provides normalized
  metadata honoring PEP 566:

  - If a long description is provided in the payload of the
    RFC 822 value, it can be retrieved as the ``Description``
    field.
  - Any multi-line values in the metadata will be returned as
    such.
  - For any multi-line values, line continuation characters
    are removed. This backward-incompatible change means
    that any projects relying on the RFC 822 line continuation
    characters being present must be tolerant to them having
    been removed.
  - Add a ``json`` property that provides the metadata
    converted to a JSON-compatible form per PEP 566.

v3.10.1
=======

* Minor tweaks from CPython.

v3.10.0
=======

* #295: Internal refactoring to unify section parsing logic.

v3.9.1
======

* #296: Exclude 'prepare' package.
* #297: Fix ValueError when entry points contains comments.

v3.9.0
======

* Use of Mapping (dict) interfaces on ``SelectableGroups``
  is now flagged as deprecated. Instead, users are advised
  to use the select interface for future compatibility.

  Suppress the warning with this filter:
  ``ignore:SelectableGroups dict interface``.

  Or with this invocation in the Python environment:
  ``warnings.filterwarnings('ignore', 'SelectableGroups dict interface')``.

  Preferably, switch to the ``select`` interface introduced
  in 3.7.0. See the
  `entry points documentation \ 
<https://importlib-metadata.readthedocs.io/en/latest/using.html#entry-points>`_ \ 
and changelog for the 3.6
  release below for more detail.

  For some use-cases, especially those that rely on
  ``importlib.metadata`` in Python 3.8 and 3.9 or
  those relying on older ``importlib_metadata`` (especially
  on Python 3.5 and earlier),
  `backports.entry_points_selectable \ 
<https://pypi.org/project/backports.entry_points_selectable>`_
  was created to ease the transition. Please have a look
  at that project if simply relying on importlib_metadata 3.6+
  is not straightforward. Background in #298.

* #283: Entry point parsing no longer relies on ConfigParser
  and instead uses a custom, one-pass parser to load the
  config, resulting in a ~20% performance improvement when
  loading entry points.

v3.8.2
======

* #293: Re-enabled lazy evaluation of path lookup through
  a FreezableDefaultDict.

v3.8.1
======

* #293: Workaround for error in distribution search.

v3.8.0
======

* #290: Add mtime-based caching for ``FastPath`` and its
  lookups, dramatically increasing performance for repeated
  distribution lookups.

v3.7.3
======

* Docs enhancements and cleanup following review in
  `GH-24782 <https://github.com/python/cpython/pull/24782>`_.

v3.7.2
======

* Cleaned up cruft in entry_points docstring.

v3.7.1
======

* Internal refactoring to facilitate ``entry_points() -> dict``
  deprecation.

v3.7.0
======

* #131: Added ``packages_distributions`` to conveniently
  resolve a top-level package or module to its distribution(s).

v3.6.0
======

* #284: Introduces new ``EntryPoints`` object, a tuple of
  ``EntryPoint`` objects but with convenience properties for
  selecting and inspecting the results:

  - ``.select()`` accepts ``group`` or ``name`` keyword
    parameters and returns a new ``EntryPoints`` tuple
    with only those that match the selection.
  - ``.groups`` property presents all of the group names.
  - ``.names`` property presents the names of the entry points.
  - Item access (e.g. ``eps[name]``) retrieves a single
    entry point by name.

  ``entry_points`` now accepts "selection parameters",
  same as ``EntryPoint.select()``.

  ``entry_points()`` now provides a future-compatible
  ``SelectableGroups`` object that supplies the above interface
  (except item access) but remains a dict for compatibility.

  In the future, ``entry_points()`` will return an
  ``EntryPoints`` object for all entry points.

  If passing selection parameters to ``entry_points``, the
  future behavior is invoked and an ``EntryPoints`` is the
  result.

* #284: Construction of entry points using
  ``dict([EntryPoint, ...])`` is now deprecated and raises
  an appropriate DeprecationWarning and will be removed in
  a future version.

* #300: ``Distribution.entry_points`` now presents as an
  ``EntryPoints`` object and access by index is no longer
  allowed. If access by index is required, cast to a sequence
  first.

v3.5.0
======

* #280: ``entry_points`` now only returns entry points for
  unique distributions (by name).

v3.4.0
======

* #10: Project now declares itself as being typed.
* #272: Additional performance enhancements to distribution
  discovery.
* #111: For PyPA projects, add test ensuring that
  ``MetadataPathFinder._search_paths`` honors the needed
  interface. Method is still private.

v3.3.0
======

* #265: ``EntryPoint`` objects now expose a ``.dist`` object
  referencing the ``Distribution`` when constructed from a
  Distribution.

v3.2.0
======

* The object returned by ``metadata()`` now has a
  formally-defined protocol called ``PackageMetadata``
  with declared support for the ``.get_all()`` method.
  Fixes #126.

v3.1.1
======

v2.1.1
======

* #261: Restored compatibility for package discovery for
  metadata without version in the name and for legacy
  eggs.

v3.1.0
======

* Merge with 2.1.0.

v2.1.0
======

* #253: When querying for package metadata, the lookup
  now honors
  `package normalization rules \ 
<https://packaging.python.org/specifications/recording-installed-packages/>`_.

v3.0.0
======

* Require Python 3.6 or later.