557 lines
18 KiB
Python
557 lines
18 KiB
Python
|
import logging
|
||
|
|
import sys
|
||
|
|
from typing import TYPE_CHECKING, Any, FrozenSet, Iterable, Optional, Tuple, Union, cast
|
||
|
|
|
||
|
|
from pip._vendor.packaging.utils import NormalizedName, canonicalize_name
|
||
|
|
from pip._vendor.packaging.version import Version
|
||
|
|
|
||
|
|
from pip._internal.exceptions import (
|
||
|
|
HashError,
|
||
|
|
InstallationSubprocessError,
|
||
|
|
MetadataInconsistent,
|
||
|
|
)
|
||
|
|
from pip._internal.metadata import BaseDistribution
|
||
|
|
from pip._internal.models.link import Link, links_equivalent
|
||
|
|
from pip._internal.models.wheel import Wheel
|
||
|
|
from pip._internal.req.constructors import (
|
||
|
|
install_req_from_editable,
|
||
|
|
install_req_from_line,
|
||
|
|
)
|
||
|
|
from pip._internal.req.req_install import InstallRequirement
|
||
|
|
from pip._internal.utils.direct_url_helpers import direct_url_from_link
|
||
|
|
from pip._internal.utils.misc import normalize_version_info
|
||
|
|
|
||
|
|
from .base import Candidate, CandidateVersion, Requirement, format_name
|
||
|
|
|
||
|
|
if TYPE_CHECKING:
|
||
|
|
from .factory import Factory
|
||
|
|
|
||
|
|
logger = logging.getLogger(__name__)
|
||
|
|
|
||
|
|
BaseCandidate = Union[
|
||
|
|
"AlreadyInstalledCandidate",
|
||
|
|
"EditableCandidate",
|
||
|
|
"LinkCandidate",
|
||
|
|
]
|
||
|
|
|
||
|
|
# Avoid conflicting with the PyPI package "Python".
|
||
|
|
REQUIRES_PYTHON_IDENTIFIER = cast(NormalizedName, "<Python from Requires-Python>")
|
||
|
|
|
||
|
|
|
||
|
|
def as_base_candidate(candidate: Candidate) -> Optional[BaseCandidate]:
|
||
|
|
"""The runtime version of BaseCandidate."""
|
||
|
|
base_candidate_classes = (
|
||
|
|
AlreadyInstalledCandidate,
|
||
|
|
EditableCandidate,
|
||
|
|
LinkCandidate,
|
||
|
|
)
|
||
|
|
if isinstance(candidate, base_candidate_classes):
|
||
|
|
return candidate
|
||
|
|
return None
|
||
|
|
|
||
|
|
|
||
|
|
def make_install_req_from_link(
|
||
|
|
link: Link, template: InstallRequirement
|
||
|
|
) -> InstallRequirement:
|
||
|
|
assert not template.editable, "template is editable"
|
||
|
|
if template.req:
|
||
|
|
line = str(template.req)
|
||
|
|
else:
|
||
|
|
line = link.url
|
||
|
|
ireq = install_req_from_line(
|
||
|
|
line,
|
||
|
|
user_supplied=template.user_supplied,
|
||
|
|
comes_from=template.comes_from,
|
||
|
|
use_pep517=template.use_pep517,
|
||
|
|
isolated=template.isolated,
|
||
|
|
constraint=template.constraint,
|
||
|
|
options=dict(
|
||
|
|
install_options=template.install_options,
|
||
|
|
global_options=template.global_options,
|
||
|
|
hashes=template.hash_options,
|
||
|
|
),
|
||
|
|
config_settings=template.config_settings,
|
||
|
|
)
|
||
|
|
ireq.original_link = template.original_link
|
||
|
|
ireq.link = link
|
||
|
|
return ireq
|
||
|
|
|
||
|
|
|
||
|
|
def make_install_req_from_editable(
|
||
|
|
link: Link, template: InstallRequirement
|
||
|
|
) -> InstallRequirement:
|
||
|
|
assert template.editable, "template not editable"
|
||
|
|
return install_req_from_editable(
|
||
|
|
link.url,
|
||
|
|
user_supplied=template.user_supplied,
|
||
|
|
comes_from=template.comes_from,
|
||
|
|
use_pep517=template.use_pep517,
|
||
|
|
isolated=template.isolated,
|
||
|
|
constraint=template.constraint,
|
||
|
|
permit_editable_wheels=template.permit_editable_wheels,
|
||
|
|
options=dict(
|
||
|
|
install_options=template.install_options,
|
||
|
|
global_options=template.global_options,
|
||
|
|
hashes=template.hash_options,
|
||
|
|
),
|
||
|
|
config_settings=template.config_settings,
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def _make_install_req_from_dist(
|
||
|
|
dist: BaseDistribution, template: InstallRequirement
|
||
|
|
) -> InstallRequirement:
|
||
|
|
if template.req:
|
||
|
|
line = str(template.req)
|
||
|
|
elif template.link:
|
||
|
|
line = f"{dist.canonical_name} @ {template.link.url}"
|
||
|
|
else:
|
||
|
|
line = f"{dist.canonical_name}=={dist.version}"
|
||
|
|
ireq = install_req_from_line(
|
||
|
|
line,
|
||
|
|
user_supplied=template.user_supplied,
|
||
|
|
comes_from=template.comes_from,
|
||
|
|
use_pep517=template.use_pep517,
|
||
|
|
isolated=template.isolated,
|
||
|
|
constraint=template.constraint,
|
||
|
|
options=dict(
|
||
|
|
install_options=template.install_options,
|
||
|
|
global_options=template.global_options,
|
||
|
|
hashes=template.hash_options,
|
||
|
|
),
|
||
|
|
config_settings=template.config_settings,
|
||
|
|
)
|
||
|
|
ireq.satisfied_by = dist
|
||
|
|
return ireq
|
||
|
|
|
||
|
|
|
||
|
|
class _InstallRequirementBackedCandidate(Candidate):
|
||
|
|
"""A candidate backed by an ``InstallRequirement``.
|
||
|
|
|
||
|
|
This represents a package request with the target not being already
|
||
|
|
in the environment, and needs to be fetched and installed. The backing
|
||
|
|
``InstallRequirement`` is responsible for most of the leg work; this
|
||
|
|
class exposes appropriate information to the resolver.
|
||
|
|
|
||
|
|
:param link: The link passed to the ``InstallRequirement``. The backing
|
||
|
|
``InstallRequirement`` will use this link to fetch the distribution.
|
||
|
|
:param source_link: The link this candidate "originates" from. This is
|
||
|
|
different from ``link`` when the link is found in the wheel cache.
|
||
|
|
``link`` would point to the wheel cache, while this points to the
|
||
|
|
found remote link (e.g. from pypi.org).
|
||
|
|
"""
|
||
|
|
|
||
|
|
dist: BaseDistribution
|
||
|
|
is_installed = False
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
link: Link,
|
||
|
|
source_link: Link,
|
||
|
|
ireq: InstallRequirement,
|
||
|
|
factory: "Factory",
|
||
|
|
name: Optional[NormalizedName] = None,
|
||
|
|
version: Optional[CandidateVersion] = None,
|
||
|
|
) -> None:
|
||
|
|
self._link = link
|
||
|
|
self._source_link = source_link
|
||
|
|
self._factory = factory
|
||
|
|
self._ireq = ireq
|
||
|
|
self._name = name
|
||
|
|
self._version = version
|
||
|
|
self.dist = self._prepare()
|
||
|
|
|
||
|
|
def __str__(self) -> str:
|
||
|
|
return f"{self.name} {self.version}"
|
||
|
|
|
||
|
|
def __repr__(self) -> str:
|
||
|
|
return "{class_name}({link!r})".format(
|
||
|
|
class_name=self.__class__.__name__,
|
||
|
|
link=str(self._link),
|
||
|
|
)
|
||
|
|
|
||
|
|
def __hash__(self) -> int:
|
||
|
|
return hash((self.__class__, self._link))
|
||
|
|
|
||
|
|
def __eq__(self, other: Any) -> bool:
|
||
|
|
if isinstance(other, self.__class__):
|
||
|
|
return links_equivalent(self._link, other._link)
|
||
|
|
return False
|
||
|
|
|
||
|
|
@property
|
||
|
|
def source_link(self) -> Optional[Link]:
|
||
|
|
return self._source_link
|
||
|
|
|
||
|
|
@property
|
||
|
|
def project_name(self) -> NormalizedName:
|
||
|
|
"""The normalised name of the project the candidate refers to"""
|
||
|
|
if self._name is None:
|
||
|
|
self._name = self.dist.canonical_name
|
||
|
|
return self._name
|
||
|
|
|
||
|
|
@property
|
||
|
|
def name(self) -> str:
|
||
|
|
return self.project_name
|
||
|
|
|
||
|
|
@property
|
||
|
|
def version(self) -> CandidateVersion:
|
||
|
|
if self._version is None:
|
||
|
|
self._version = self.dist.version
|
||
|
|
return self._version
|
||
|
|
|
||
|
|
def format_for_error(self) -> str:
|
||
|
|
return "{} {} (from {})".format(
|
||
|
|
self.name,
|
||
|
|
self.version,
|
||
|
|
self._link.file_path if self._link.is_file else self._link,
|
||
|
|
)
|
||
|
|
|
||
|
|
def _prepare_distribution(self) -> BaseDistribution:
|
||
|
|
raise NotImplementedError("Override in subclass")
|
||
|
|
|
||
|
|
def _check_metadata_consistency(self, dist: BaseDistribution) -> None:
|
||
|
|
"""Check for consistency of project name and version of dist."""
|
||
|
|
if self._name is not None and self._name != dist.canonical_name:
|
||
|
|
raise MetadataInconsistent(
|
||
|
|
self._ireq,
|
||
|
|
"name",
|
||
|
|
self._name,
|
||
|
|
dist.canonical_name,
|
||
|
|
)
|
||
|
|
if self._version is not None and self._version != dist.version:
|
||
|
|
raise MetadataInconsistent(
|
||
|
|
self._ireq,
|
||
|
|
"version",
|
||
|
|
str(self._version),
|
||
|
|
str(dist.version),
|
||
|
|
)
|
||
|
|
|
||
|
|
def _prepare(self) -> BaseDistribution:
|
||
|
|
try:
|
||
|
|
dist = self._prepare_distribution()
|
||
|
|
except HashError as e:
|
||
|
|
# Provide HashError the underlying ireq that caused it. This
|
||
|
|
# provides context for the resulting error message to show the
|
||
|
|
# offending line to the user.
|
||
|
|
e.req = self._ireq
|
||
|
|
raise
|
||
|
|
except InstallationSubprocessError as exc:
|
||
|
|
# The output has been presented already, so don't duplicate it.
|
||
|
|
exc.context = "See above for output."
|
||
|
|
raise
|
||
|
|
|
||
|
|
self._check_metadata_consistency(dist)
|
||
|
|
return dist
|
||
|
|
|
||
|
|
def iter_dependencies(self, with_requires: bool) -> Iterable[Optional[Requirement]]:
|
||
|
|
requires = self.dist.iter_dependencies() if with_requires else ()
|
||
|
|
for r in requires:
|
||
|
|
yield self._factory.make_requirement_from_spec(str(r), self._ireq)
|
||
|
|
yield self._factory.make_requires_python_requirement(self.dist.requires_python)
|
||
|
|
|
||
|
|
def get_install_requirement(self) -> Optional[InstallRequirement]:
|
||
|
|
return self._ireq
|
||
|
|
|
||
|
|
|
||
|
|
class LinkCandidate(_InstallRequirementBackedCandidate):
|
||
|
|
is_editable = False
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
link: Link,
|
||
|
|
template: InstallRequirement,
|
||
|
|
factory: "Factory",
|
||
|
|
name: Optional[NormalizedName] = None,
|
||
|
|
version: Optional[CandidateVersion] = None,
|
||
|
|
) -> None:
|
||
|
|
source_link = link
|
||
|
|
cache_entry = factory.get_wheel_cache_entry(link, name)
|
||
|
|
if cache_entry is not None:
|
||
|
|
logger.debug("Using cached wheel link: %s", cache_entry.link)
|
||
|
|
link = cache_entry.link
|
||
|
|
ireq = make_install_req_from_link(link, template)
|
||
|
|
assert ireq.link == link
|
||
|
|
if ireq.link.is_wheel and not ireq.link.is_file:
|
||
|
|
wheel = Wheel(ireq.link.filename)
|
||
|
|
wheel_name = canonicalize_name(wheel.name)
|
||
|
|
assert name == wheel_name, f"{name!r} != {wheel_name!r} for wheel"
|
||
|
|
# Version may not be present for PEP 508 direct URLs
|
||
|
|
if version is not None:
|
||
|
|
wheel_version = Version(wheel.version)
|
||
|
|
assert version == wheel_version, "{!r} != {!r} for wheel {}".format(
|
||
|
|
version, wheel_version, name
|
||
|
|
)
|
||
|
|
|
||
|
|
if cache_entry is not None:
|
||
|
|
if cache_entry.persistent and template.link is template.original_link:
|
||
|
|
ireq.original_link_is_in_wheel_cache = True
|
||
|
|
if cache_entry.origin is not None:
|
||
|
|
ireq.download_info = cache_entry.origin
|
||
|
|
else:
|
||
|
|
# Legacy cache entry that does not have origin.json.
|
||
|
|
# download_info may miss the archive_info.hash field.
|
||
|
|
ireq.download_info = direct_url_from_link(
|
||
|
|
source_link, link_is_in_wheel_cache=cache_entry.persistent
|
||
|
|
)
|
||
|
|
|
||
|
|
super().__init__(
|
||
|
|
link=link,
|
||
|
|
source_link=source_link,
|
||
|
|
ireq=ireq,
|
||
|
|
factory=factory,
|
||
|
|
name=name,
|
||
|
|
version=version,
|
||
|
|
)
|
||
|
|
|
||
|
|
def _prepare_distribution(self) -> BaseDistribution:
|
||
|
|
preparer = self._factory.preparer
|
||
|
|
return preparer.prepare_linked_requirement(self._ireq, parallel_builds=True)
|
||
|
|
|
||
|
|
|
||
|
|
class EditableCandidate(_InstallRequirementBackedCandidate):
|
||
|
|
is_editable = True
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
link: Link,
|
||
|
|
template: InstallRequirement,
|
||
|
|
factory: "Factory",
|
||
|
|
name: Optional[NormalizedName] = None,
|
||
|
|
version: Optional[CandidateVersion] = None,
|
||
|
|
) -> None:
|
||
|
|
super().__init__(
|
||
|
|
link=link,
|
||
|
|
source_link=link,
|
||
|
|
ireq=make_install_req_from_editable(link, template),
|
||
|
|
factory=factory,
|
||
|
|
name=name,
|
||
|
|
version=version,
|
||
|
|
)
|
||
|
|
|
||
|
|
def _prepare_distribution(self) -> BaseDistribution:
|
||
|
|
return self._factory.preparer.prepare_editable_requirement(self._ireq)
|
||
|
|
|
||
|
|
|
||
|
|
class AlreadyInstalledCandidate(Candidate):
|
||
|
|
is_installed = True
|
||
|
|
source_link = None
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
dist: BaseDistribution,
|
||
|
|
template: InstallRequirement,
|
||
|
|
factory: "Factory",
|
||
|
|
) -> None:
|
||
|
|
self.dist = dist
|
||
|
|
self._ireq = _make_install_req_from_dist(dist, template)
|
||
|
|
self._factory = factory
|
||
|
|
|
||
|
|
# This is just logging some messages, so we can do it eagerly.
|
||
|
|
# The returned dist would be exactly the same as self.dist because we
|
||
|
|
# set satisfied_by in _make_install_req_from_dist.
|
||
|
|
# TODO: Supply reason based on force_reinstall and upgrade_strategy.
|
||
|
|
skip_reason = "already satisfied"
|
||
|
|
factory.preparer.prepare_installed_requirement(self._ireq, skip_reason)
|
||
|
|
|
||
|
|
def __str__(self) -> str:
|
||
|
|
return str(self.dist)
|
||
|
|
|
||
|
|
def __repr__(self) -> str:
|
||
|
|
return "{class_name}({distribution!r})".format(
|
||
|
|
class_name=self.__class__.__name__,
|
||
|
|
distribution=self.dist,
|
||
|
|
)
|
||
|
|
|
||
|
|
def __hash__(self) -> int:
|
||
|
|
return hash((self.__class__, self.name, self.version))
|
||
|
|
|
||
|
|
def __eq__(self, other: Any) -> bool:
|
||
|
|
if isinstance(other, self.__class__):
|
||
|
|
return self.name == other.name and self.version == other.version
|
||
|
|
return False
|
||
|
|
|
||
|
|
@property
|
||
|
|
def project_name(self) -> NormalizedName:
|
||
|
|
return self.dist.canonical_name
|
||
|
|
|
||
|
|
@property
|
||
|
|
def name(self) -> str:
|
||
|
|
return self.project_name
|
||
|
|
|
||
|
|
@property
|
||
|
|
def version(self) -> CandidateVersion:
|
||
|
|
return self.dist.version
|
||
|
|
|
||
|
|
@property
|
||
|
|
def is_editable(self) -> bool:
|
||
|
|
return self.dist.editable
|
||
|
|
|
||
|
|
def format_for_error(self) -> str:
|
||
|
|
return f"{self.name} {self.version} (Installed)"
|
||
|
|
|
||
|
|
def iter_dependencies(self, with_requires: bool) -> Iterable[Optional[Requirement]]:
|
||
|
|
if not with_requires:
|
||
|
|
return
|
||
|
|
for r in self.dist.iter_dependencies():
|
||
|
|
yield self._factory.make_requirement_from_spec(str(r), self._ireq)
|
||
|
|
|
||
|
|
def get_install_requirement(self) -> Optional[InstallRequirement]:
|
||
|
|
return None
|
||
|
|
|
||
|
|
|
||
|
|
class ExtrasCandidate(Candidate):
|
||
|
|
"""A candidate that has 'extras', indicating additional dependencies.
|
||
|
|
|
||
|
|
Requirements can be for a project with dependencies, something like
|
||
|
|
foo[extra]. The extras don't affect the project/version being installed
|
||
|
|
directly, but indicate that we need additional dependencies. We model that
|
||
|
|
by having an artificial ExtrasCandidate that wraps the "base" candidate.
|
||
|
|
|
||
|
|
The ExtrasCandidate differs from the base in the following ways:
|
||
|
|
|
||
|
|
1. It has a unique name, of the form foo[extra]. This causes the resolver
|
||
|
|
to treat it as a separate node in the dependency graph.
|
||
|
|
2. When we're getting the candidate's dependencies,
|
||
|
|
a) We specify that we want the extra dependencies as well.
|
||
|
|
b) We add a dependency on the base candidate.
|
||
|
|
See below for why this is needed.
|
||
|
|
3. We return None for the underlying InstallRequirement, as the base
|
||
|
|
candidate will provide it, and we don't want to end up with duplicates.
|
||
|
|
|
||
|
|
The dependency on the base candidate is needed so that the resolver can't
|
||
|
|
decide that it should recommend foo[extra1] version 1.0 and foo[extra2]
|
||
|
|
version 2.0. Having those candidates depend on foo=1.0 and foo=2.0
|
||
|
|
respectively forces the resolver to recognise that this is a conflict.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
base: BaseCandidate,
|
||
|
|
extras: FrozenSet[str],
|
||
|
|
) -> None:
|
||
|
|
self.base = base
|
||
|
|
self.extras = extras
|
||
|
|
|
||
|
|
def __str__(self) -> str:
|
||
|
|
name, rest = str(self.base).split(" ", 1)
|
||
|
|
return "{}[{}] {}".format(name, ",".join(self.extras), rest)
|
||
|
|
|
||
|
|
def __repr__(self) -> str:
|
||
|
|
return "{class_name}(base={base!r}, extras={extras!r})".format(
|
||
|
|
class_name=self.__class__.__name__,
|
||
|
|
base=self.base,
|
||
|
|
extras=self.extras,
|
||
|
|
)
|
||
|
|
|
||
|
|
def __hash__(self) -> int:
|
||
|
|
return hash((self.base, self.extras))
|
||
|
|
|
||
|
|
def __eq__(self, other: Any) -> bool:
|
||
|
|
if isinstance(other, self.__class__):
|
||
|
|
return self.base == other.base and self.extras == other.extras
|
||
|
|
return False
|
||
|
|
|
||
|
|
@property
|
||
|
|
def project_name(self) -> NormalizedName:
|
||
|
|
return self.base.project_name
|
||
|
|
|
||
|
|
@property
|
||
|
|
def name(self) -> str:
|
||
|
|
"""The normalised name of the project the candidate refers to"""
|
||
|
|
return format_name(self.base.project_name, self.extras)
|
||
|
|
|
||
|
|
@property
|
||
|
|
def version(self) -> CandidateVersion:
|
||
|
|
return self.base.version
|
||
|
|
|
||
|
|
def format_for_error(self) -> str:
|
||
|
|
return "{} [{}]".format(
|
||
|
|
self.base.format_for_error(), ", ".join(sorted(self.extras))
|
||
|
|
)
|
||
|
|
|
||
|
|
@property
|
||
|
|
def is_installed(self) -> bool:
|
||
|
|
return self.base.is_installed
|
||
|
|
|
||
|
|
@property
|
||
|
|
def is_editable(self) -> bool:
|
||
|
|
return self.base.is_editable
|
||
|
|
|
||
|
|
@property
|
||
|
|
def source_link(self) -> Optional[Link]:
|
||
|
|
return self.base.source_link
|
||
|
|
|
||
|
|
def iter_dependencies(self, with_requires: bool) -> Iterable[Optional[Requirement]]:
|
||
|
|
factory = self.base._factory
|
||
|
|
|
||
|
|
# Add a dependency on the exact base
|
||
|
|
# (See note 2b in the class docstring)
|
||
|
|
yield factory.make_requirement_from_candidate(self.base)
|
||
|
|
if not with_requires:
|
||
|
|
return
|
||
|
|
|
||
|
|
# The user may have specified extras that the candidate doesn't
|
||
|
|
# support. We ignore any unsupported extras here.
|
||
|
|
valid_extras = self.extras.intersection(self.base.dist.iter_provided_extras())
|
||
|
|
invalid_extras = self.extras.difference(self.base.dist.iter_provided_extras())
|
||
|
|
for extra in sorted(invalid_extras):
|
||
|
|
logger.warning(
|
||
|
|
"%s %s does not provide the extra '%s'",
|
||
|
|
self.base.name,
|
||
|
|
self.version,
|
||
|
|
extra,
|
||
|
|
)
|
||
|
|
|
||
|
|
for r in self.base.dist.iter_dependencies(valid_extras):
|
||
|
|
requirement = factory.make_requirement_from_spec(
|
||
|
|
str(r), self.base._ireq, valid_extras
|
||
|
|
)
|
||
|
|
if requirement:
|
||
|
|
yield requirement
|
||
|
|
|
||
|
|
def get_install_requirement(self) -> Optional[InstallRequirement]:
|
||
|
|
# We don't return anything here, because we always
|
||
|
|
# depend on the base candidate, and we'll get the
|
||
|
|
# install requirement from that.
|
||
|
|
return None
|
||
|
|
|
||
|
|
|
||
|
|
class RequiresPythonCandidate(Candidate):
|
||
|
|
is_installed = False
|
||
|
|
source_link = None
|
||
|
|
|
||
|
|
def __init__(self, py_version_info: Optional[Tuple[int, ...]]) -> None:
|
||
|
|
if py_version_info is not None:
|
||
|
|
version_info = normalize_version_info(py_version_info)
|
||
|
|
else:
|
||
|
|
version_info = sys.version_info[:3]
|
||
|
|
self._version = Version(".".join(str(c) for c in version_info))
|
||
|
|
|
||
|
|
# We don't need to implement __eq__() and __ne__() since there is always
|
||
|
|
# only one RequiresPythonCandidate in a resolution, i.e. the host Python.
|
||
|
|
# The built-in object.__eq__() and object.__ne__() do exactly what we want.
|
||
|
|
|
||
|
|
def __str__(self) -> str:
|
||
|
|
return f"Python {self._version}"
|
||
|
|
|
||
|
|
@property
|
||
|
|
def project_name(self) -> NormalizedName:
|
||
|
|
return REQUIRES_PYTHON_IDENTIFIER
|
||
|
|
|
||
|
|
@property
|
||
|
|
def name(self) -> str:
|
||
|
|
return REQUIRES_PYTHON_IDENTIFIER
|
||
|
|
|
||
|
|
@property
|
||
|
|
def version(self) -> CandidateVersion:
|
||
|
|
return self._version
|
||
|
|
|
||
|
|
def format_for_error(self) -> str:
|
||
|
|
return f"Python {self.version}"
|
||
|
|
|
||
|
|
def iter_dependencies(self, with_requires: bool) -> Iterable[Optional[Requirement]]:
|
||
|
|
return ()
|
||
|
|
|
||
|
|
def get_install_requirement(self) -> Optional[InstallRequirement]:
|
||
|
|
return None
|