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✏️ Editing: cmdoptions.py

"""
shared options and groups

The principle here is to define options once, but *not* instantiate them
globally. One reason being that options with action='append' can carry state
between parses. pip parses general options twice internally, and shouldn't
pass on state. To be consistent, all options will follow this design.
"""

# The following comment should be removed at some point in the future.
# mypy: strict-optional=False

from __future__ import absolute_import

import os
import textwrap
import warnings
from distutils.util import strtobool
from functools import partial
from optparse import SUPPRESS_HELP, Option, OptionGroup
from textwrap import dedent

from pip._internal.cli.progress_bars import BAR_TYPES
from pip._internal.exceptions import CommandError
from pip._internal.locations import USER_CACHE_DIR, get_src_prefix
from pip._internal.models.format_control import FormatControl
from pip._internal.models.index import PyPI
from pip._internal.models.target_python import TargetPython
from pip._internal.utils.hashes import STRONG_HASHES
from pip._internal.utils.typing import MYPY_CHECK_RUNNING

if MYPY_CHECK_RUNNING:
    from typing import Any, Callable, Dict, Optional, Tuple
    from optparse import OptionParser, Values
    from pip._internal.cli.parser import ConfigOptionParser

def raise_option_error(parser, option, msg):
    # type: (OptionParser, Option, str) -> None
    """
    Raise an option parsing error using parser.error().

Args:
      parser: an OptionParser instance.
      option: an Option instance.
      msg: the error text.
    """
    msg = '{} error: {}'.format(option, msg)
    msg = textwrap.fill(' '.join(msg.split()))
    parser.error(msg)

def make_option_group(group, parser):
    # type: (Dict[str, Any], ConfigOptionParser) -> OptionGroup
    """
    Return an OptionGroup object
    group  -- assumed to be dict with 'name' and 'options' keys
    parser -- an optparse Parser
    """
    option_group = OptionGroup(parser, group['name'])
    for option in group['options']:
        option_group.add_option(option())
    return option_group

def check_install_build_global(options, check_options=None):
    # type: (Values, Optional[Values]) -> None
    """Disable wheels if per-setup.py call options are set.

:param options: The OptionParser options to update.
    :param check_options: The options to check, if not supplied defaults to
        options.
    """
    if check_options is None:
        check_options = options

def getname(n):
        # type: (str) -> Optional[Any]
        return getattr(check_options, n, None)
    names = ["build_options", "global_options", "install_options"]
    if any(map(getname, names)):
        control = options.format_control
        control.disallow_binaries()
        warnings.warn(
            'Disabling all use of wheels due to the use of --build-option '
            '/ --global-option / --install-option.', stacklevel=2,
        )

def check_dist_restriction(options, check_target=False):
    # type: (Values, bool) -> None
    """Function for determining if custom platform options are allowed.

:param options: The OptionParser options.
    :param check_target: Whether or not to check if --target is being used.
    """
    dist_restriction_set = any([
        options.python_version,
        options.platform,
        options.abi,
        options.implementation,
    ])

binary_only = FormatControl(set(), {':all:'})
    sdist_dependencies_allowed = (
        options.format_control != binary_only and
        not options.ignore_dependencies
    )

# Installations or downloads using dist restrictions must not combine
    # source distributions and dist-specific wheels, as they are not
    # guaranteed to be locally compatible.
    if dist_restriction_set and sdist_dependencies_allowed:
        raise CommandError(
            "When restricting platform and interpreter constraints using "
            "--python-version, --platform, --abi, or --implementation, "
            "either --no-deps must be set, or --only-binary=:all: must be "
            "set and --no-binary must not be set (or must be set to "
            ":none:)."
        )

if check_target:
        if dist_restriction_set and not options.target_dir:
            raise CommandError(
                "Can not use any platform or abi specific options unless "
                "installing via '--target'"
            )

def _path_option_check(option, opt, value):
    # type: (Option, str, str) -> str
    return os.path.expanduser(value)

class PipOption(Option):
    TYPES = Option.TYPES + ("path",)
    TYPE_CHECKER = Option.TYPE_CHECKER.copy()
    TYPE_CHECKER["path"] = _path_option_check

###########
# options #
###########

help_ = partial(
    Option,
    '-h', '--help',
    dest='help',
    action='help',
    help='Show help.',
)  # type: Callable[..., Option]

isolated_mode = partial(
    Option,
    "--isolated",
    dest="isolated_mode",
    action="store_true",
    default=False,
    help=(
        "Run pip in an isolated mode, ignoring environment variables and user "
        "configuration."
    ),
)  # type: Callable[..., Option]

require_virtualenv = partial(
    Option,
    # Run only if inside a virtualenv, bail if not.
    '--require-virtualenv', '--require-venv',
    dest='require_venv',
    action='store_true',
    default=False,
    help=SUPPRESS_HELP
)  # type: Callable[..., Option]

verbose = partial(
    Option,
    '-v', '--verbose',
    dest='verbose',
    action='count',
    default=0,
    help='Give more output. Option is additive, and can be used up to 3 times.'
)  # type: Callable[..., Option]

no_color = partial(
    Option,
    '--no-color',
    dest='no_color',
    action='store_true',
    default=False,
    help="Suppress colored output",
)  # type: Callable[..., Option]

version = partial(
    Option,
    '-V', '--version',
    dest='version',
    action='store_true',
    help='Show version and exit.',
)  # type: Callable[..., Option]

quiet = partial(
    Option,
    '-q', '--quiet',
    dest='quiet',
    action='count',
    default=0,
    help=(
        'Give less output. Option is additive, and can be used up to 3'
        ' times (corresponding to WARNING, ERROR, and CRITICAL logging'
        ' levels).'
    ),
)  # type: Callable[..., Option]

progress_bar = partial(
    Option,
    '--progress-bar',
    dest='progress_bar',
    type='choice',
    choices=list(BAR_TYPES.keys()),
    default='on',
    help=(
        'Specify type of progress to be displayed [' +
        '|'.join(BAR_TYPES.keys()) + '] (default: %default)'
    ),
)  # type: Callable[..., Option]

log = partial(
    PipOption,
    "--log", "--log-file", "--local-log",
    dest="log",
    metavar="path",
    type="path",
    help="Path to a verbose appending log."
)  # type: Callable[..., Option]

no_input = partial(
    Option,
    # Don't ask for input
    '--no-input',
    dest='no_input',
    action='store_true',
    default=False,
    help="Disable prompting for input."
)  # type: Callable[..., Option]

proxy = partial(
    Option,
    '--proxy',
    dest='proxy',
    type='str',
    default='',
    help="Specify a proxy in the form [user:passwd@]proxy.server:port."
)  # type: Callable[..., Option]

retries = partial(
    Option,
    '--retries',
    dest='retries',
    type='int',
    default=5,
    help="Maximum number of retries each connection should attempt "
         "(default %default times).",
)  # type: Callable[..., Option]

timeout = partial(
    Option,
    '--timeout', '--default-timeout',
    metavar='sec',
    dest='timeout',
    type='float',
    default=15,
    help='Set the socket timeout (default %default seconds).',
)  # type: Callable[..., Option]

def exists_action():
    # type: () -> Option
    return Option(
        # Option when path already exist
        '--exists-action',
        dest='exists_action',
        type='choice',
        choices=['s', 'i', 'w', 'b', 'a'],
        default=[],
        action='append',
        metavar='action',
        help="Default action when a path already exists: "
             "(s)witch, (i)gnore, (w)ipe, (b)ackup, (a)bort.",
    )

cert = partial(
    PipOption,
    '--cert',
    dest='cert',
    type='path',
    metavar='path',
    help="Path to alternate CA bundle.",
)  # type: Callable[..., Option]

client_cert = partial(
    PipOption,
    '--client-cert',
    dest='client_cert',
    type='path',
    default=None,
    metavar='path',
    help="Path to SSL client certificate, a single file containing the "
         "private key and the certificate in PEM format.",
)  # type: Callable[..., Option]

index_url = partial(
    Option,
    '-i', '--index-url', '--pypi-url',
    dest='index_url',
    metavar='URL',
    default=PyPI.simple_url,
    help="Base URL of the Python Package Index (default %default). "
         "This should point to a repository compliant with PEP 503 "
         "(the simple repository API) or a local directory laid out "
         "in the same format.",
)  # type: Callable[..., Option]

def extra_index_url():
    # type: () -> Option
    return Option(
        '--extra-index-url',
        dest='extra_index_urls',
        metavar='URL',
        action='append',
        default=[],
        help="Extra URLs of package indexes to use in addition to "
             "--index-url. Should follow the same rules as "
             "--index-url.",
    )

no_index = partial(
    Option,
    '--no-index',
    dest='no_index',
    action='store_true',
    default=False,
    help='Ignore package index (only looking at --find-links URLs instead).',
)  # type: Callable[..., Option]

def find_links():
    # type: () -> Option
    return Option(
        '-f', '--find-links',
        dest='find_links',
        action='append',
        default=[],
        metavar='url',
        help="If a URL or path to an html file, then parse for links to "
             "archives such as sdist (.tar.gz) or wheel (.whl) files. "
             "If a local path or file:// URL that's a directory,  "
             "then look for archives in the directory listing. "
             "Links to VCS project URLs are not supported.",
    )

def trusted_host():
    # type: () -> Option
    return Option(
        "--trusted-host",
        dest="trusted_hosts",
        action="append",
        metavar="HOSTNAME",
        default=[],
        help="Mark this host or host:port pair as trusted, even though it "
             "does not have valid or any HTTPS.",
    )

def constraints():
    # type: () -> Option
    return Option(
        '-c', '--constraint',
        dest='constraints',
        action='append',
        default=[],
        metavar='file',
        help='Constrain versions using the given constraints file. '
        'This option can be used multiple times.'
    )

def requirements():
    # type: () -> Option
    return Option(
        '-r', '--requirement',
        dest='requirements',
        action='append',
        default=[],
        metavar='file',
        help='Install from the given requirements file. '
        'This option can be used multiple times.'
    )

def editable():
    # type: () -> Option
    return Option(
        '-e', '--editable',
        dest='editables',
        action='append',
        default=[],
        metavar='path/url',
        help=('Install a project in editable mode (i.e. setuptools '
              '"develop mode") from a local project path or a VCS url.'),
    )

def _handle_src(option, opt_str, value, parser):
    # type: (Option, str, str, OptionParser) -> None
    value = os.path.abspath(value)
    setattr(parser.values, option.dest, value)

src = partial(
    PipOption,
    '--src', '--source', '--source-dir', '--source-directory',
    dest='src_dir',
    type='path',
    metavar='dir',
    default=get_src_prefix(),
    action='callback',
    callback=_handle_src,
    help='Directory to check out editable projects into. '
    'The default in a virtualenv is "<venv path>/src". '
    'The default for global installs is "<current dir>/src".'
)  # type: Callable[..., Option]

def _get_format_control(values, option):
    # type: (Values, Option) -> Any
    """Get a format_control object."""
    return getattr(values, option.dest)

def _handle_no_binary(option, opt_str, value, parser):
    # type: (Option, str, str, OptionParser) -> None
    existing = _get_format_control(parser.values, option)
    FormatControl.handle_mutual_excludes(
        value, existing.no_binary, existing.only_binary,
    )

def _handle_only_binary(option, opt_str, value, parser):
    # type: (Option, str, str, OptionParser) -> None
    existing = _get_format_control(parser.values, option)
    FormatControl.handle_mutual_excludes(
        value, existing.only_binary, existing.no_binary,
    )

def no_binary():
    # type: () -> Option
    format_control = FormatControl(set(), set())
    return Option(
        "--no-binary", dest="format_control", action="callback",
        callback=_handle_no_binary, type="str",
        default=format_control,
        help='Do not use binary packages. Can be supplied multiple times, and '
             'each time adds to the existing value. Accepts either ":all:" to '
             'disable all binary packages, ":none:" to empty the set (notice '
             'the colons), or one or more package names with commas between '
             'them (no colons). Note that some packages are tricky to compile '
             'and may fail to install when this option is used on them.',
    )

def only_binary():
    # type: () -> Option
    format_control = FormatControl(set(), set())
    return Option(
        "--only-binary", dest="format_control", action="callback",
        callback=_handle_only_binary, type="str",
        default=format_control,
        help='Do not use source packages. Can be supplied multiple times, and '
             'each time adds to the existing value. Accepts either ":all:" to '
             'disable all source packages, ":none:" to empty the set, or one '
             'or more package names with commas between them. Packages '
             'without binary distributions will fail to install when this '
             'option is used on them.',
    )

platform = partial(
    Option,
    '--platform',
    dest='platform',
    metavar='platform',
    default=None,
    help=("Only use wheels compatible with <platform>. "
          "Defaults to the platform of the running system."),
)  # type: Callable[..., Option]

# This was made a separate function for unit-testing purposes.
def _convert_python_version(value):
    # type: (str) -> Tuple[Tuple[int, ...], Optional[str]]
    """
    Convert a version string like "3", "37", or "3.7.3" into a tuple of ints.

:return: A 2-tuple (version_info, error_msg), where `error_msg` is
        non-None if and only if there was a parsing error.
    """
    if not value:
        # The empty string is the same as not providing a value.
        return (None, None)

parts = value.split('.')
    if len(parts) > 3:
        return ((), 'at most three version parts are allowed')

if len(parts) == 1:
        # Then we are in the case of "3" or "37".
        value = parts[0]
        if len(value) > 1:
            parts = [value[0], value[1:]]

try:
        version_info = tuple(int(part) for part in parts)
    except ValueError:
        return ((), 'each version part must be an integer')

return (version_info, None)

def _handle_python_version(option, opt_str, value, parser):
    # type: (Option, str, str, OptionParser) -> None
    """
    Handle a provided --python-version value.
    """
    version_info, error_msg = _convert_python_version(value)
    if error_msg is not None:
        msg = (
            'invalid --python-version value: {!r}: {}'.format(
                value, error_msg,
            )
        )
        raise_option_error(parser, option=option, msg=msg)

parser.values.python_version = version_info

python_version = partial(
    Option,
    '--python-version',
    dest='python_version',
    metavar='python_version',
    action='callback',
    callback=_handle_python_version, type='str',
    default=None,
    help=dedent("""\
    The Python interpreter version to use for wheel and "Requires-Python"
    compatibility checks. Defaults to a version derived from the running
    interpreter. The version can be specified using up to three dot-separated
    integers (e.g. "3" for 3.0.0, "3.7" for 3.7.0, or "3.7.3"). A major-minor
    version can also be given as a string without dots (e.g. "37" for 3.7.0).
    """),
)  # type: Callable[..., Option]

implementation = partial(
    Option,
    '--implementation',
    dest='implementation',
    metavar='implementation',
    default=None,
    help=("Only use wheels compatible with Python "
          "implementation <implementation>, e.g. 'pp', 'jy', 'cp', "
          " or 'ip'. If not specified, then the current "
          "interpreter implementation is used.  Use 'py' to force "
          "implementation-agnostic wheels."),
)  # type: Callable[..., Option]

abi = partial(
    Option,
    '--abi',
    dest='abi',
    metavar='abi',
    default=None,
    help=("Only use wheels compatible with Python "
          "abi <abi>, e.g. 'pypy_41'.  If not specified, then the "
          "current interpreter abi tag is used.  Generally "
          "you will need to specify --implementation, "
          "--platform, and --python-version when using "
          "this option."),
)  # type: Callable[..., Option]

def add_target_python_options(cmd_opts):
    # type: (OptionGroup) -> None
    cmd_opts.add_option(platform())
    cmd_opts.add_option(python_version())
    cmd_opts.add_option(implementation())
    cmd_opts.add_option(abi())

def make_target_python(options):
    # type: (Values) -> TargetPython
    target_python = TargetPython(
        platform=options.platform,
        py_version_info=options.python_version,
        abi=options.abi,
        implementation=options.implementation,
    )

return target_python

def prefer_binary():
    # type: () -> Option
    return Option(
        "--prefer-binary",
        dest="prefer_binary",
        action="store_true",
        default=False,
        help="Prefer older binary packages over newer source packages."
    )

cache_dir = partial(
    PipOption,
    "--cache-dir",
    dest="cache_dir",
    default=USER_CACHE_DIR,
    metavar="dir",
    type='path',
    help="Store the cache data in <dir>."
)  # type: Callable[..., Option]

def _handle_no_cache_dir(option, opt, value, parser):
    # type: (Option, str, str, OptionParser) -> None
    """
    Process a value provided for the --no-cache-dir option.

This is an optparse.Option callback for the --no-cache-dir option.
    """
    # The value argument will be None if --no-cache-dir is passed via the
    # command-line, since the option doesn't accept arguments.  However,
    # the value can be non-None if the option is triggered e.g. by an
    # environment variable, like PIP_NO_CACHE_DIR=true.
    if value is not None:
        # Then parse the string value to get argument error-checking.
        try:
            strtobool(value)
        except ValueError as exc:
            raise_option_error(parser, option=option, msg=str(exc))

# Originally, setting PIP_NO_CACHE_DIR to a value that strtobool()
    # converted to 0 (like "false" or "no") caused cache_dir to be disabled
    # rather than enabled (logic would say the latter).  Thus, we disable
    # the cache directory not just on values that parse to True, but (for
    # backwards compatibility reasons) also on values that parse to False.
    # In other words, always set it to False if the option is provided in
    # some (valid) form.
    parser.values.cache_dir = False

no_cache = partial(
    Option,
    "--no-cache-dir",
    dest="cache_dir",
    action="callback",
    callback=_handle_no_cache_dir,
    help="Disable the cache.",
)  # type: Callable[..., Option]

no_deps = partial(
    Option,
    '--no-deps', '--no-dependencies',
    dest='ignore_dependencies',
    action='store_true',
    default=False,
    help="Don't install package dependencies.",
)  # type: Callable[..., Option]

def _handle_build_dir(option, opt, value, parser):
    # type: (Option, str, str, OptionParser) -> None
    if value:
        value = os.path.abspath(value)
    setattr(parser.values, option.dest, value)

build_dir = partial(
    PipOption,
    '-b', '--build', '--build-dir', '--build-directory',
    dest='build_dir',
    type='path',
    metavar='dir',
    action='callback',
    callback=_handle_build_dir,
    help='(DEPRECATED) '
         'Directory to unpack packages into and build in. Note that '
         'an initial build still takes place in a temporary directory. '
         'The location of temporary directories can be controlled by setting '
         'the TMPDIR environment variable (TEMP on Windows) appropriately. '
         'When passed, build directories are not cleaned in case of failures.'
)  # type: Callable[..., Option]

ignore_requires_python = partial(
    Option,
    '--ignore-requires-python',
    dest='ignore_requires_python',
    action='store_true',
    help='Ignore the Requires-Python information.'
)  # type: Callable[..., Option]

no_build_isolation = partial(
    Option,
    '--no-build-isolation',
    dest='build_isolation',
    action='store_false',
    default=True,
    help='Disable isolation when building a modern source distribution. '
         'Build dependencies specified by PEP 518 must be already installed '
         'if this option is used.'
)  # type: Callable[..., Option]

def _handle_no_use_pep517(option, opt, value, parser):
    # type: (Option, str, str, OptionParser) -> None
    """
    Process a value provided for the --no-use-pep517 option.

This is an optparse.Option callback for the no_use_pep517 option.
    """
    # Since --no-use-pep517 doesn't accept arguments, the value argument
    # will be None if --no-use-pep517 is passed via the command-line.
    # However, the value can be non-None if the option is triggered e.g.
    # by an environment variable, for example "PIP_NO_USE_PEP517=true".
    if value is not None:
        msg = """A value was passed for --no-use-pep517,
        probably using either the PIP_NO_USE_PEP517 environment variable
        or the "no-use-pep517" config file option. Use an appropriate value
        of the PIP_USE_PEP517 environment variable or the "use-pep517"
        config file option instead.
        """
        raise_option_error(parser, option=option, msg=msg)

# Otherwise, --no-use-pep517 was passed via the command-line.
    parser.values.use_pep517 = False

use_pep517 = partial(
    Option,
    '--use-pep517',
    dest='use_pep517',
    action='store_true',
    default=None,
    help='Use PEP 517 for building source distributions '
         '(use --no-use-pep517 to force legacy behaviour).'
)  # type: Any

no_use_pep517 = partial(
    Option,
    '--no-use-pep517',
    dest='use_pep517',
    action='callback',
    callback=_handle_no_use_pep517,
    default=None,
    help=SUPPRESS_HELP
)  # type: Any

install_options = partial(
    Option,
    '--install-option',
    dest='install_options',
    action='append',
    metavar='options',
    help="Extra arguments to be supplied to the setup.py install "
         "command (use like --install-option=\"--install-scripts=/usr/local/"
         "bin\"). Use multiple --install-option options to pass multiple "
         "options to setup.py install. If you are using an option with a "
         "directory path, be sure to use absolute path.",
)  # type: Callable[..., Option]

global_options = partial(
    Option,
    '--global-option',
    dest='global_options',
    action='append',
    metavar='options',
    help="Extra global options to be supplied to the setup.py "
         "call before the install command.",
)  # type: Callable[..., Option]

no_clean = partial(
    Option,
    '--no-clean',
    action='store_true',
    default=False,
    help="Don't clean up build directories."
)  # type: Callable[..., Option]

pre = partial(
    Option,
    '--pre',
    action='store_true',
    default=False,
    help="Include pre-release and development versions. By default, "
         "pip only finds stable versions.",
)  # type: Callable[..., Option]

disable_pip_version_check = partial(
    Option,
    "--disable-pip-version-check",
    dest="disable_pip_version_check",
    action="store_true",
    default=False,
    help="Don't periodically check PyPI to determine whether a new version "
         "of pip is available for download. Implied with --no-index.",
)  # type: Callable[..., Option]

def _handle_merge_hash(option, opt_str, value, parser):
    # type: (Option, str, str, OptionParser) -> None
    """Given a value spelled "algo:digest", append the digest to a list
    pointed to in a dict by the algo name."""
    if not parser.values.hashes:
        parser.values.hashes = {}
    try:
        algo, digest = value.split(':', 1)
    except ValueError:
        parser.error('Arguments to {} must be a hash name '  # noqa
                     'followed by a value, like --hash=sha256:'
                     'abcde...'.format(opt_str))
    if algo not in STRONG_HASHES:
        parser.error('Allowed hash algorithms for {} are {}.'.format(  # noqa
                     opt_str, ', '.join(STRONG_HASHES)))
    parser.values.hashes.setdefault(algo, []).append(digest)

hash = partial(
    Option,
    '--hash',
    # Hash values eventually end up in InstallRequirement.hashes due to
    # __dict__ copying in process_line().
    dest='hashes',
    action='callback',
    callback=_handle_merge_hash,
    type='string',
    help="Verify that the package's archive matches this "
         'hash before installing. Example: --hash=sha256:abcdef...',
)  # type: Callable[..., Option]

require_hashes = partial(
    Option,
    '--require-hashes',
    dest='require_hashes',
    action='store_true',
    default=False,
    help='Require a hash to check each requirement against, for '
         'repeatable installs. This option is implied when any package in a '
         'requirements file has a --hash option.',
)  # type: Callable[..., Option]

list_path = partial(
    PipOption,
    '--path',
    dest='path',
    type='path',
    action='append',
    help='Restrict to the specified installation path for listing '
         'packages (can be used multiple times).'
)  # type: Callable[..., Option]

def check_list_path_option(options):
    # type: (Values) -> None
    if options.path and (options.user or options.local):
        raise CommandError(
            "Cannot combine '--path' with '--user' or '--local'"
        )

no_python_version_warning = partial(
    Option,
    '--no-python-version-warning',
    dest='no_python_version_warning',
    action='store_true',
    default=False,
    help='Silence deprecation warnings for upcoming unsupported Pythons.',
)  # type: Callable[..., Option]

unstable_feature = partial(
    Option,
    '--unstable-feature',
    dest='unstable_features',
    metavar='feature',
    action='append',
    default=[],
    choices=['resolver'],
    help=SUPPRESS_HELP,  # TODO: drop this in pip 20.3
)  # type: Callable[..., Option]

use_new_feature = partial(
    Option,
    '--use-feature',
    dest='features_enabled',
    metavar='feature',
    action='append',
    default=[],
    choices=['2020-resolver', 'fast-deps'],
    help='Enable new functionality, that may be backward incompatible.',
)  # type: Callable[..., Option]

use_deprecated_feature = partial(
    Option,
    '--use-deprecated',
    dest='deprecated_features_enabled',
    metavar='feature',
    action='append',
    default=[],
    choices=[],
    help=(
        'Enable deprecated functionality, that will be removed in the future.'
    ),
)  # type: Callable[..., Option]

##########
# groups #
##########

general_group = {
    'name': 'General Options',
    'options': [
        help_,
        isolated_mode,
        require_virtualenv,
        verbose,
        version,
        quiet,
        log,
        no_input,
        proxy,
        retries,
        timeout,
        exists_action,
        trusted_host,
        cert,
        client_cert,
        cache_dir,
        no_cache,
        disable_pip_version_check,
        no_color,
        no_python_version_warning,
        unstable_feature,
        use_new_feature,
        use_deprecated_feature,
    ]
}  # type: Dict[str, Any]

index_group = {
    'name': 'Package Index Options',
    'options': [
        index_url,
        extra_index_url,
        no_index,
        find_links,
    ]
}  # type: Dict[str, Any]

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