--- a/lib/python3.8/site-packages/pip/_internal/utils/packaging.py	Mon Jul 27 03:47:31 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,94 +0,0 @@
-from __future__ import absolute_import
-
-import logging
-from email.parser import FeedParser
-
-from pip._vendor import pkg_resources
-from pip._vendor.packaging import specifiers, version
-
-from pip._internal.exceptions import NoneMetadataError
-from pip._internal.utils.misc import display_path
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional, Tuple
-    from email.message import Message
-    from pip._vendor.pkg_resources import Distribution
-
-
-logger = logging.getLogger(__name__)
-
-
-def check_requires_python(requires_python, version_info):
-    # type: (Optional[str], Tuple[int, ...]) -> bool
-    """
-    Check if the given Python version matches a "Requires-Python" specifier.
-
-    :param version_info: A 3-tuple of ints representing a Python
-        major-minor-micro version to check (e.g. `sys.version_info[:3]`).
-
-    :return: `True` if the given Python version satisfies the requirement.
-        Otherwise, return `False`.
-
-    :raises InvalidSpecifier: If `requires_python` has an invalid format.
-    """
-    if requires_python is None:
-        # The package provides no information
-        return True
-    requires_python_specifier = specifiers.SpecifierSet(requires_python)
-
-    python_version = version.parse('.'.join(map(str, version_info)))
-    return python_version in requires_python_specifier
-
-
-def get_metadata(dist):
-    # type: (Distribution) -> Message
-    """
-    :raises NoneMetadataError: if the distribution reports `has_metadata()`
-        True but `get_metadata()` returns None.
-    """
-    metadata_name = 'METADATA'
-    if (isinstance(dist, pkg_resources.DistInfoDistribution) and
-            dist.has_metadata(metadata_name)):
-        metadata = dist.get_metadata(metadata_name)
-    elif dist.has_metadata('PKG-INFO'):
-        metadata_name = 'PKG-INFO'
-        metadata = dist.get_metadata(metadata_name)
-    else:
-        logger.warning("No metadata found in %s", display_path(dist.location))
-        metadata = ''
-
-    if metadata is None:
-        raise NoneMetadataError(dist, metadata_name)
-
-    feed_parser = FeedParser()
-    # The following line errors out if with a "NoneType" TypeError if
-    # passed metadata=None.
-    feed_parser.feed(metadata)
-    return feed_parser.close()
-
-
-def get_requires_python(dist):
-    # type: (pkg_resources.Distribution) -> Optional[str]
-    """
-    Return the "Requires-Python" metadata for a distribution, or None
-    if not present.
-    """
-    pkg_info_dict = get_metadata(dist)
-    requires_python = pkg_info_dict.get('Requires-Python')
-
-    if requires_python is not None:
-        # Convert to a str to satisfy the type checker, since requires_python
-        # can be a Header object.
-        requires_python = str(requires_python)
-
-    return requires_python
-
-
-def get_installer(dist):
-    # type: (Distribution) -> str
-    if dist.has_metadata('INSTALLER'):
-        for line in dist.get_metadata_lines('INSTALLER'):
-            if line.strip():
-                return line.strip()
-    return ''