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pip/src/pip/_internal/cli/cmdoptions.py

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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
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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 logging
import os
import textwrap
import warnings
from distutils.util import strtobool
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from functools import partial
from optparse import SUPPRESS_HELP, Option, OptionGroup
from textwrap import dedent
from pip._internal.exceptions import CommandError
from pip._internal.locations import USER_CACHE_DIR, get_src_prefix
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from pip._internal.models.format_control import FormatControl
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from pip._internal.models.index import PyPI
from pip._internal.models.target_python import TargetPython
from pip._internal.utils.hashes import STRONG_HASHES
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from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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from pip._internal.utils.ui import BAR_TYPES
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if MYPY_CHECK_RUNNING:
from typing import Any, Callable, Dict, Optional, Tuple
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from optparse import OptionParser, Values
from pip._internal.cli.parser import ConfigOptionParser
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logger = logging.getLogger(__name__)
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)
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def make_option_group(group, parser):
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# type: (Dict[str, Any], ConfigOptionParser) -> OptionGroup
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"""
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())
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return option_group
def check_install_build_global(options, check_options=None):
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# 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):
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# 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
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# 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 _PathOption(Option):
TYPES = Option.TYPES + ("path",)
TYPE_CHECKER = Option.TYPE_CHECKER.copy()
TYPE_CHECKER["path"] = _path_option_check
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###########
# options #
###########
help_ = partial(
Option,
'-h', '--help',
dest='help',
action='help',
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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,
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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',
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help='Show version and exit.',
) # type: Callable[..., Option]
quiet = partial(
Option,
'-q', '--quiet',
dest='quiet',
action='count',
default=0,
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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',
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help=(
'Specify type of progress to be displayed [' +
'|'.join(BAR_TYPES.keys()) + '] (default: %default)'
),
) # type: Callable[..., Option]
log = partial(
_PathOption,
"--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,
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help=SUPPRESS_HELP
) # type: Callable[..., Option]
proxy = partial(
Option,
'--proxy',
dest='proxy',
type='str',
default='',
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help="Specify a proxy in the form [user:passwd@]proxy.server:port."
) # type: Callable[..., Option]
retries = partial(
Option,
'--retries',
dest='retries',
type='int',
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default=5,
help="Maximum number of retries each connection should attempt "
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"(default %default times).",
) # type: Callable[..., Option]
timeout = partial(
Option,
'--timeout', '--default-timeout',
metavar='sec',
dest='timeout',
type='float',
default=15,
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help='Set the socket timeout (default %default seconds).',
) # type: Callable[..., Option]
skip_requirements_regex = partial(
Option,
# A regex to be used to skip requirements
'--skip-requirements-regex',
dest='skip_requirements_regex',
type='str',
default='',
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help=SUPPRESS_HELP,
) # type: Callable[..., Option]
def exists_action():
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# 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: "
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"(s)witch, (i)gnore, (w)ipe, (b)ackup, (a)bort.",
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)
cert = partial(
_PathOption,
'--cert',
dest='cert',
type='path',
metavar='path',
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help="Path to alternate CA bundle.",
) # type: Callable[..., Option]
client_cert = partial(
_PathOption,
'--client-cert',
dest='client_cert',
type='path',
default=None,
metavar='path',
help="Path to SSL client certificate, a single file containing the "
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"private key and the certificate in PEM format.",
) # type: Callable[..., Option]
index_url = partial(
Option,
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'-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 "
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"in the same format.",
) # type: Callable[..., Option]
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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 "
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"--index-url.",
)
no_index = partial(
Option,
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'--no-index',
dest='no_index',
action='store_true',
default=False,
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help='Ignore package index (only looking at --find-links URLs instead).',
) # type: Callable[..., Option]
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def find_links():
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# 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. If a local path or file:// url that's a directory, "
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"then look for archives in the directory listing.",
)
def trusted_host():
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# 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():
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# type: () -> Option
return Option(
'-c', '--constraint',
dest='constraints',
action='append',
default=[],
metavar='file',
help='Constrain versions using the given constraints file. '
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'This option can be used multiple times.'
)
def requirements():
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# type: () -> Option
return Option(
'-r', '--requirement',
dest='requirements',
action='append',
default=[],
metavar='file',
help='Install from the given requirements file. '
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'This option can be used multiple times.'
)
def editable():
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# 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(
_PathOption,
'--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):
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# type: (Values, Option) -> Any
"""Get a format_control object."""
return getattr(values, option.dest)
def _handle_no_binary(option, opt_str, value, parser):
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# 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):
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# 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():
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# 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, 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.",
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)
def only_binary():
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# 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 "
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"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():
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# 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(
_PathOption,
"--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,
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'--no-deps', '--no-dependencies',
dest='ignore_dependencies',
action='store_true',
default=False,
help="Don't install package dependencies.",
) # type: Callable[..., Option]
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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(
_PathOption,
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'-b', '--build', '--build-dir', '--build-directory',
dest='build_dir',
type='path',
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metavar='dir',
action='callback',
callback=_handle_build_dir,
help='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]
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ignore_requires_python = partial(
Option,
'--ignore-requires-python',
dest='ignore_requires_python',
action='store_true',
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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,
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'--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 "
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"directory path, be sure to use absolute path.",
) # type: Callable[..., Option]
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global_options = partial(
Option,
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'--global-option',
dest='global_options',
action='append',
metavar='options',
help="Extra global options to be supplied to the setup.py "
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"call before the install command.",
) # type: Callable[..., Option]
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no_clean = partial(
Option,
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'--no-clean',
action='store_true',
default=False,
help="Don't clean up build directories."
) # type: Callable[..., Option]
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pre = partial(
Option,
'--pre',
action='store_true',
default=False,
help="Include pre-release and development versions. By default, "
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"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 "
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"of pip is available for download. Implied with --no-index.",
) # type: Callable[..., Option]
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# Deprecated, Remove later
always_unzip = partial(
Option,
'-Z', '--always-unzip',
dest='always_unzip',
action='store_true',
help=SUPPRESS_HELP,
) # type: Callable[..., Option]
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def _handle_merge_hash(option, opt_str, value, parser):
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# 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:
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parser.values.hashes = {}
try:
algo, digest = value.split(':', 1)
except ValueError:
parser.error('Arguments to %s must be a hash name '
'followed by a value, like --hash=sha256:abcde...' %
opt_str)
if algo not in STRONG_HASHES:
parser.error('Allowed hash algorithms for %s are %s.' %
(opt_str, ', '.join(STRONG_HASHES)))
parser.values.hashes.setdefault(algo, []).append(digest)
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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 "
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'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 '
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'requirements file has a --hash option.',
) # type: Callable[..., Option]
list_path = partial(
_PathOption,
'--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]
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##########
# groups #
##########
general_group = {
'name': 'General Options',
'options': [
help_,
isolated_mode,
require_virtualenv,
verbose,
version,
quiet,
log,
no_input,
proxy,
retries,
timeout,
skip_requirements_regex,
exists_action,
trusted_host,
cert,
client_cert,
cache_dir,
no_cache,
disable_pip_version_check,
no_color,
no_python_version_warning,
]
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} # type: Dict[str, Any]
index_group = {
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'name': 'Package Index Options',
'options': [
index_url,
extra_index_url,
no_index,
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find_links,
]
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} # type: Dict[str, Any]