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"""
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
import importlib.util
import logging
import os
import textwrap
from functools import partial
from optparse import SUPPRESS_HELP, Option, OptionGroup, OptionParser, Values
from textwrap import dedent
from typing import Any, Callable, Dict, Optional, Tuple
from pip._vendor.packaging.utils import canonicalize_name
from pip._internal.cli.parser import ConfigOptionParser
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.misc import strtobool
logger = logging.getLogger(__name__)
def raise_option_error(parser: OptionParser, option: Option, msg: str) -> None:
"""
Raise an option parsing error using parser.error().
Args:
parser: an OptionParser instance.
option: an Option instance.
msg: the error text.
"""
msg = f"{option} error: {msg}"
msg = textwrap.fill(" ".join(msg.split()))
parser.error(msg)
def make_option_group(group: Dict[str, Any], parser: 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_dist_restriction(options: Values, check_target: bool = False) -> 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.platforms,
options.abis,
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 not options.dry_run and dist_restriction_set and not options.target_dir:
raise CommandError(
"Can not use any platform or abi specific options unless "
"installing via '--target' or using '--dry-run'"
)
def _path_option_check(option: Option, opt: str, value: str) -> str:
return os.path.expanduser(value)
def _package_name_option_check(option: Option, opt: str, value: str) -> str:
return canonicalize_name(value)
class PipOption(Option):
TYPES = Option.TYPES + ("path", "package_name")
TYPE_CHECKER = Option.TYPE_CHECKER.copy()
TYPE_CHECKER["package_name"] = _package_name_option_check
TYPE_CHECKER["path"] = _path_option_check
###########
# options #
###########
help_: Callable[..., Option] = partial(
Option,
"-h",
"--help",
dest="help",
action="help",
help="Show help.",
)
debug_mode: Callable[..., Option] = partial(
Option,
"--debug",
dest="debug_mode",
action="store_true",
default=False,
help=(
"Let unhandled exceptions propagate outside the main subroutine, "
"instead of logging them to stderr."
),
)
isolated_mode: Callable[..., Option] = partial(
Option,
"--isolated",
dest="isolated_mode",
action="store_true",
default=False,
help=(
"Run pip in an isolated mode, ignoring environment variables and user "
"configuration."
),
)
require_virtualenv: Callable[..., Option] = partial(
Option,
"--require-virtualenv",
"--require-venv",
dest="require_venv",
action="store_true",
default=False,
help=(
"Allow pip to only run in a virtual environment; "
"exit with an error otherwise."
),
)
override_externally_managed: Callable[..., Option] = partial(
Option,
"--break-system-packages",
dest="override_externally_managed",
action="store_true",
help="Allow pip to modify an EXTERNALLY-MANAGED Python installation",
)
python: Callable[..., Option] = partial(
Option,
"--python",
dest="python",
help="Run pip with the specified Python interpreter.",
)
verbose: Callable[..., Option] = 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.",
)
no_color: Callable[..., Option] = partial(
Option,
"--no-color",
dest="no_color",
action="store_true",
default=False,
help="Suppress colored output.",
)
version: Callable[..., Option] = partial(
Option,
"-V",
"--version",
dest="version",
action="store_true",
help="Show version and exit.",
)
quiet: Callable[..., Option] = 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)."
),
)
progress_bar: Callable[..., Option] = partial(
Option,
"--progress-bar",
dest="progress_bar",
type="choice",
choices=["on", "off"],
default="on",
help="Specify whether the progress bar should be used [on, off] (default: on)",
)
log: Callable[..., Option] = partial(
PipOption,
"--log",
"--log-file",
"--local-log",
dest="log",
metavar="path",
type="path",
help="Path to a verbose appending log.",
)
no_input: Callable[..., Option] = partial(
Option,
# Don't ask for input
"--no-input",
dest="no_input",
action="store_true",
default=False,
help="Disable prompting for input.",
)
keyring_provider: Callable[..., Option] = partial(
Option,
"--keyring-provider",
dest="keyring_provider",
choices=["auto", "disabled", "import", "subprocess"],
default="auto",
help=(
"Enable the credential lookup via the keyring library if user input is allowed."
" Specify which mechanism to use [disabled, import, subprocess]."
" (default: disabled)"
),
)
proxy: Callable[..., Option] = partial(
Option,
"--proxy",
dest="proxy",
type="str",
default="",
help="Specify a proxy in the form scheme://[user:passwd@]proxy.server:port.",
)
retries: Callable[..., Option] = partial(
Option,
"--retries",
dest="retries",
type="int",
default=5,
help="Maximum number of retries each connection should attempt "
"(default %default times).",
)
timeout: Callable[..., Option] = partial(
Option,
"--timeout",
"--default-timeout",
metavar="sec",
dest="timeout",
type="float",
default=15,
help="Set the socket timeout (default %default seconds).",
)
def exists_action() -> 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: Callable[..., Option] = partial(
PipOption,
"--cert",
dest="cert",
type="path",
metavar="path",
help=(
"Path to PEM-encoded CA certificate bundle. "
"If provided, overrides the default. "
"See 'SSL Certificate Verification' in pip documentation "
"for more information."
),
)
client_cert: Callable[..., Option] = 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.",
)
index_url: Callable[..., Option] = 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.",
)
def extra_index_url() -> 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: Callable[..., Option] = partial(
Option,
"--no-index",
dest="no_index",
action="store_true",
default=False,
help="Ignore package index (only looking at --find-links URLs instead).",
)
def find_links() -> 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() -> 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() -> 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() -> 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() -> 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: Option, opt_str: str, value: str, parser: OptionParser) -> None:
value = os.path.abspath(value)
setattr(parser.values, option.dest, value)
src: Callable[..., Option] = 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".',
)
def _get_format_control(values: Values, option: Option) -> Any:
"""Get a format_control object."""
return getattr(values, option.dest)
def _handle_no_binary(
option: Option, opt_str: str, value: str, parser: 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: Option, opt_str: str, value: str, parser: OptionParser
) -> None:
existing = _get_format_control(parser.values, option)
FormatControl.handle_mutual_excludes(
value,
existing.only_binary,
existing.no_binary,
)
def no_binary() -> 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() -> 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.",
)
platforms: Callable[..., Option] = partial(
Option,
"--platform",
dest="platforms",
metavar="platform",
action="append",
default=None,
help=(
"Only use wheels compatible with <platform>. Defaults to the "
"platform of the running system. Use this option multiple times to "
"specify multiple platforms supported by the target interpreter."
),
)
# This was made a separate function for unit-testing purposes.
def _convert_python_version(value: 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: Option, opt_str: str, value: str, parser: OptionParser
) -> None:
"""
Handle a provided --python-version value.
"""
version_info, error_msg = _convert_python_version(value)
if error_msg is not None:
msg = f"invalid --python-version value: {value!r}: {error_msg}"
raise_option_error(parser, option=option, msg=msg)
parser.values.python_version = version_info
python_version: Callable[..., Option] = 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).
"""
),
)
implementation: Callable[..., Option] = 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."
),
)
abis: Callable[..., Option] = partial(
Option,
"--abi",
dest="abis",
metavar="abi",
action="append",
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. "
"Use this option multiple times to specify multiple abis supported "
"by the target interpreter. Generally you will need to specify "
"--implementation, --platform, and --python-version when using this "
"option."
),
)
def add_target_python_options(cmd_opts: OptionGroup) -> None:
cmd_opts.add_option(platforms())
cmd_opts.add_option(python_version())
cmd_opts.add_option(implementation())
cmd_opts.add_option(abis())
def make_target_python(options: Values) -> TargetPython:
target_python = TargetPython(
platforms=options.platforms,
py_version_info=options.python_version,
abis=options.abis,
implementation=options.implementation,
)
return target_python
def prefer_binary() -> Option:
return Option(
"--prefer-binary",
dest="prefer_binary",
action="store_true",
default=False,
help=(
"Prefer binary packages over source packages, even if the "
"source packages are newer."
),
)
cache_dir: Callable[..., Option] = partial(
PipOption,
"--cache-dir",
dest="cache_dir",
default=USER_CACHE_DIR,
metavar="dir",
type="path",
help="Store the cache data in <dir>.",
)
def _handle_no_cache_dir(
option: Option, opt: str, value: str, parser: 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: Callable[..., Option] = partial(
Option,
"--no-cache-dir",
dest="cache_dir",
action="callback",
callback=_handle_no_cache_dir,
help="Disable the cache.",
)
no_deps: Callable[..., Option] = partial(
Option,
"--no-deps",
"--no-dependencies",
dest="ignore_dependencies",
action="store_true",
default=False,
help="Don't install package dependencies.",
)
ignore_requires_python: Callable[..., Option] = partial(
Option,
"--ignore-requires-python",
dest="ignore_requires_python",
action="store_true",
help="Ignore the Requires-Python information.",
)
no_build_isolation: Callable[..., Option] = 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.",
)
check_build_deps: Callable[..., Option] = partial(
Option,
"--check-build-dependencies",
dest="check_build_deps",
action="store_true",
default=False,
help="Check the build dependencies when PEP517 is used.",
)
def _handle_no_use_pep517(
option: Option, opt: str, value: str, parser: 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)
# If user doesn't wish to use pep517, we check if setuptools and wheel are installed
# and raise error if it is not.
packages = ("setuptools", "wheel")
if not all(importlib.util.find_spec(package) for package in packages):
msg = (
f"It is not possible to use --no-use-pep517 "
f"without {' and '.join(packages)} installed."
)
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: Any = 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).",
)
no_use_pep517: Any = partial(
Option,
"--no-use-pep517",
dest="use_pep517",
action="callback",
callback=_handle_no_use_pep517,
default=None,
help=SUPPRESS_HELP,
)
def _handle_config_settings(
option: Option, opt_str: str, value: str, parser: OptionParser
) -> None:
key, sep, val = value.partition("=")
if sep != "=":
parser.error(f"Arguments to {opt_str} must be of the form KEY=VAL")
dest = getattr(parser.values, option.dest)
if dest is None:
dest = {}
setattr(parser.values, option.dest, dest)
if key in dest:
if isinstance(dest[key], list):
dest[key].append(val)
else:
dest[key] = [dest[key], val]
else:
dest[key] = val
config_settings: Callable[..., Option] = partial(
Option,
"-C",
"--config-settings",
dest="config_settings",
type=str,
action="callback",
callback=_handle_config_settings,
metavar="settings",
help="Configuration settings to be passed to the PEP 517 build backend. "
"Settings take the form KEY=VALUE. Use multiple --config-settings options "
"to pass multiple keys to the backend.",
)
build_options: Callable[..., Option] = partial(
Option,
"--build-option",
dest="build_options",
metavar="options",
action="append",
help="Extra arguments to be supplied to 'setup.py bdist_wheel'.",
)
global_options: Callable[..., Option] = 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 or bdist_wheel command.",
)
no_clean: Callable[..., Option] = partial(
Option,
"--no-clean",
action="store_true",
default=False,
help="Don't clean up build directories.",
)
pre: Callable[..., Option] = partial(
Option,
"--pre",
action="store_true",
default=False,
help="Include pre-release and development versions. By default, "
"pip only finds stable versions.",
)
disable_pip_version_check: Callable[..., Option] = 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.",
)
root_user_action: Callable[..., Option] = partial(
Option,
"--root-user-action",
dest="root_user_action",
default="warn",
choices=["warn", "ignore"],
help="Action if pip is run as a root user. By default, a warning message is shown.",
)
def _handle_merge_hash(
option: Option, opt_str: str, value: str, parser: 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(
f"Arguments to {opt_str} must be a hash name "
"followed by a value, like --hash=sha256:"
"abcde..."
)
if algo not in STRONG_HASHES:
parser.error(
"Allowed hash algorithms for {} are {}.".format(
opt_str, ", ".join(STRONG_HASHES)
)
)
parser.values.hashes.setdefault(algo, []).append(digest)
hash: Callable[..., Option] = 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...",
)
require_hashes: Callable[..., Option] = 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.",
)
list_path: Callable[..., Option] = partial(
PipOption,
"--path",
dest="path",
type="path",
action="append",
help="Restrict to the specified installation path for listing "
"packages (can be used multiple times).",
)
def check_list_path_option(options: Values) -> None:
if options.path and (options.user or options.local):
raise CommandError("Cannot combine '--path' with '--user' or '--local'")
list_exclude: Callable[..., Option] = partial(
PipOption,
"--exclude",
dest="excludes",
action="append",
metavar="package",
type="package_name",
help="Exclude specified package from the output",
)
no_python_version_warning: Callable[..., Option] = partial(
Option,
"--no-python-version-warning",
dest="no_python_version_warning",
action="store_true",
default=False,
help="Silence deprecation warnings for upcoming unsupported Pythons.",
)
# Features that are now always on. A warning is printed if they are used.
ALWAYS_ENABLED_FEATURES = [
"no-binary-enable-wheel-cache", # always on since 23.1
]
use_new_feature: Callable[..., Option] = partial(
Option,
"--use-feature",
dest="features_enabled",
metavar="feature",
action="append",
default=[],
choices=[
"fast-deps",
"truststore",
]
+ ALWAYS_ENABLED_FEATURES,
help="Enable new functionality, that may be backward incompatible.",
)
use_deprecated_feature: Callable[..., Option] = partial(
Option,
"--use-deprecated",
dest="deprecated_features_enabled",
metavar="feature",
action="append",
default=[],
choices=[
"legacy-resolver",
],
help=("Enable deprecated functionality, that will be removed in the future."),
)
##########
# groups #
##########
general_group: Dict[str, Any] = {
"name": "General Options",
"options": [
help_,
debug_mode,
isolated_mode,
require_virtualenv,
python,
verbose,
version,
quiet,
log,
no_input,
keyring_provider,
proxy,
retries,
timeout,
exists_action,
trusted_host,
cert,
client_cert,
cache_dir,
no_cache,
disable_pip_version_check,
no_color,
no_python_version_warning,
use_new_feature,
use_deprecated_feature,
],
}
index_group: Dict[str, Any] = {
"name": "Package Index Options",
"options": [
index_url,
extra_index_url,
no_index,
find_links,
],
}