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Diffstat (limited to 'venv/lib/python3.11/site-packages/pip/_internal/exceptions.py')
| -rw-r--r-- | venv/lib/python3.11/site-packages/pip/_internal/exceptions.py | 728 |
1 files changed, 728 insertions, 0 deletions
diff --git a/venv/lib/python3.11/site-packages/pip/_internal/exceptions.py b/venv/lib/python3.11/site-packages/pip/_internal/exceptions.py new file mode 100644 index 0000000..5007a62 --- /dev/null +++ b/venv/lib/python3.11/site-packages/pip/_internal/exceptions.py @@ -0,0 +1,728 @@ +"""Exceptions used throughout package. + +This module MUST NOT try to import from anything within `pip._internal` to +operate. This is expected to be importable from any/all files within the +subpackage and, thus, should not depend on them. +""" + +import configparser +import contextlib +import locale +import logging +import pathlib +import re +import sys +from itertools import chain, groupby, repeat +from typing import TYPE_CHECKING, Dict, Iterator, List, Optional, Union + +from pip._vendor.requests.models import Request, Response +from pip._vendor.rich.console import Console, ConsoleOptions, RenderResult +from pip._vendor.rich.markup import escape +from pip._vendor.rich.text import Text + +if TYPE_CHECKING: + from hashlib import _Hash + from typing import Literal + + from pip._internal.metadata import BaseDistribution + from pip._internal.req.req_install import InstallRequirement + +logger = logging.getLogger(__name__) + + +# +# Scaffolding +# +def _is_kebab_case(s: str) -> bool: + return re.match(r"^[a-z]+(-[a-z]+)*$", s) is not None + + +def _prefix_with_indent( + s: Union[Text, str], + console: Console, + *, + prefix: str, + indent: str, +) -> Text: + if isinstance(s, Text): + text = s + else: + text = console.render_str(s) + + return console.render_str(prefix, overflow="ignore") + console.render_str( + f"\n{indent}", overflow="ignore" + ).join(text.split(allow_blank=True)) + + +class PipError(Exception): + """The base pip error.""" + + +class DiagnosticPipError(PipError): + """An error, that presents diagnostic information to the user. + + This contains a bunch of logic, to enable pretty presentation of our error + messages. Each error gets a unique reference. Each error can also include + additional context, a hint and/or a note -- which are presented with the + main error message in a consistent style. + + This is adapted from the error output styling in `sphinx-theme-builder`. + """ + + reference: str + + def __init__( + self, + *, + kind: 'Literal["error", "warning"]' = "error", + reference: Optional[str] = None, + message: Union[str, Text], + context: Optional[Union[str, Text]], + hint_stmt: Optional[Union[str, Text]], + note_stmt: Optional[Union[str, Text]] = None, + link: Optional[str] = None, + ) -> None: + # Ensure a proper reference is provided. + if reference is None: + assert hasattr(self, "reference"), "error reference not provided!" + reference = self.reference + assert _is_kebab_case(reference), "error reference must be kebab-case!" + + self.kind = kind + self.reference = reference + + self.message = message + self.context = context + + self.note_stmt = note_stmt + self.hint_stmt = hint_stmt + + self.link = link + + super().__init__(f"<{self.__class__.__name__}: {self.reference}>") + + def __repr__(self) -> str: + return ( + f"<{self.__class__.__name__}(" + f"reference={self.reference!r}, " + f"message={self.message!r}, " + f"context={self.context!r}, " + f"note_stmt={self.note_stmt!r}, " + f"hint_stmt={self.hint_stmt!r}" + ")>" + ) + + def __rich_console__( + self, + console: Console, + options: ConsoleOptions, + ) -> RenderResult: + colour = "red" if self.kind == "error" else "yellow" + + yield f"[{colour} bold]{self.kind}[/]: [bold]{self.reference}[/]" + yield "" + + if not options.ascii_only: + # Present the main message, with relevant context indented. + if self.context is not None: + yield _prefix_with_indent( + self.message, + console, + prefix=f"[{colour}]×[/] ", + indent=f"[{colour}]│[/] ", + ) + yield _prefix_with_indent( + self.context, + console, + prefix=f"[{colour}]╰─>[/] ", + indent=f"[{colour}] [/] ", + ) + else: + yield _prefix_with_indent( + self.message, + console, + prefix="[red]×[/] ", + indent=" ", + ) + else: + yield self.message + if self.context is not None: + yield "" + yield self.context + + if self.note_stmt is not None or self.hint_stmt is not None: + yield "" + + if self.note_stmt is not None: + yield _prefix_with_indent( + self.note_stmt, + console, + prefix="[magenta bold]note[/]: ", + indent=" ", + ) + if self.hint_stmt is not None: + yield _prefix_with_indent( + self.hint_stmt, + console, + prefix="[cyan bold]hint[/]: ", + indent=" ", + ) + + if self.link is not None: + yield "" + yield f"Link: {self.link}" + + +# +# Actual Errors +# +class ConfigurationError(PipError): + """General exception in configuration""" + + +class InstallationError(PipError): + """General exception during installation""" + + +class UninstallationError(PipError): + """General exception during uninstallation""" + + +class MissingPyProjectBuildRequires(DiagnosticPipError): + """Raised when pyproject.toml has `build-system`, but no `build-system.requires`.""" + + reference = "missing-pyproject-build-system-requires" + + def __init__(self, *, package: str) -> None: + super().__init__( + message=f"Can not process {escape(package)}", + context=Text( + "This package has an invalid pyproject.toml file.\n" + "The [build-system] table is missing the mandatory `requires` key." + ), + note_stmt="This is an issue with the package mentioned above, not pip.", + hint_stmt=Text("See PEP 518 for the detailed specification."), + ) + + +class InvalidPyProjectBuildRequires(DiagnosticPipError): + """Raised when pyproject.toml an invalid `build-system.requires`.""" + + reference = "invalid-pyproject-build-system-requires" + + def __init__(self, *, package: str, reason: str) -> None: + super().__init__( + message=f"Can not process {escape(package)}", + context=Text( + "This package has an invalid `build-system.requires` key in " + f"pyproject.toml.\n{reason}" + ), + note_stmt="This is an issue with the package mentioned above, not pip.", + hint_stmt=Text("See PEP 518 for the detailed specification."), + ) + + +class NoneMetadataError(PipError): + """Raised when accessing a Distribution's "METADATA" or "PKG-INFO". + + This signifies an inconsistency, when the Distribution claims to have + the metadata file (if not, raise ``FileNotFoundError`` instead), but is + not actually able to produce its content. This may be due to permission + errors. + """ + + def __init__( + self, + dist: "BaseDistribution", + metadata_name: str, + ) -> None: + """ + :param dist: A Distribution object. + :param metadata_name: The name of the metadata being accessed + (can be "METADATA" or "PKG-INFO"). + """ + self.dist = dist + self.metadata_name = metadata_name + + def __str__(self) -> str: + # Use `dist` in the error message because its stringification + # includes more information, like the version and location. + return f"None {self.metadata_name} metadata found for distribution: {self.dist}" + + +class UserInstallationInvalid(InstallationError): + """A --user install is requested on an environment without user site.""" + + def __str__(self) -> str: + return "User base directory is not specified" + + +class InvalidSchemeCombination(InstallationError): + def __str__(self) -> str: + before = ", ".join(str(a) for a in self.args[:-1]) + return f"Cannot set {before} and {self.args[-1]} together" + + +class DistributionNotFound(InstallationError): + """Raised when a distribution cannot be found to satisfy a requirement""" + + +class RequirementsFileParseError(InstallationError): + """Raised when a general error occurs parsing a requirements file line.""" + + +class BestVersionAlreadyInstalled(PipError): + """Raised when the most up-to-date version of a package is already + installed.""" + + +class BadCommand(PipError): + """Raised when virtualenv or a command is not found""" + + +class CommandError(PipError): + """Raised when there is an error in command-line arguments""" + + +class PreviousBuildDirError(PipError): + """Raised when there's a previous conflicting build directory""" + + +class NetworkConnectionError(PipError): + """HTTP connection error""" + + def __init__( + self, + error_msg: str, + response: Optional[Response] = None, + request: Optional[Request] = None, + ) -> None: + """ + Initialize NetworkConnectionError with `request` and `response` + objects. + """ + self.response = response + self.request = request + self.error_msg = error_msg + if ( + self.response is not None + and not self.request + and hasattr(response, "request") + ): + self.request = self.response.request + super().__init__(error_msg, response, request) + + def __str__(self) -> str: + return str(self.error_msg) + + +class InvalidWheelFilename(InstallationError): + """Invalid wheel filename.""" + + +class UnsupportedWheel(InstallationError): + """Unsupported wheel.""" + + +class InvalidWheel(InstallationError): + """Invalid (e.g. corrupt) wheel.""" + + def __init__(self, location: str, name: str): + self.location = location + self.name = name + + def __str__(self) -> str: + return f"Wheel '{self.name}' located at {self.location} is invalid." + + +class MetadataInconsistent(InstallationError): + """Built metadata contains inconsistent information. + + This is raised when the metadata contains values (e.g. name and version) + that do not match the information previously obtained from sdist filename, + user-supplied ``#egg=`` value, or an install requirement name. + """ + + def __init__( + self, ireq: "InstallRequirement", field: str, f_val: str, m_val: str + ) -> None: + self.ireq = ireq + self.field = field + self.f_val = f_val + self.m_val = m_val + + def __str__(self) -> str: + return ( + f"Requested {self.ireq} has inconsistent {self.field}: " + f"expected {self.f_val!r}, but metadata has {self.m_val!r}" + ) + + +class InstallationSubprocessError(DiagnosticPipError, InstallationError): + """A subprocess call failed.""" + + reference = "subprocess-exited-with-error" + + def __init__( + self, + *, + command_description: str, + exit_code: int, + output_lines: Optional[List[str]], + ) -> None: + if output_lines is None: + output_prompt = Text("See above for output.") + else: + output_prompt = ( + Text.from_markup(f"[red][{len(output_lines)} lines of output][/]\n") + + Text("".join(output_lines)) + + Text.from_markup(R"[red]\[end of output][/]") + ) + + super().__init__( + message=( + f"[green]{escape(command_description)}[/] did not run successfully.\n" + f"exit code: {exit_code}" + ), + context=output_prompt, + hint_stmt=None, + note_stmt=( + "This error originates from a subprocess, and is likely not a " + "problem with pip." + ), + ) + + self.command_description = command_description + self.exit_code = exit_code + + def __str__(self) -> str: + return f"{self.command_description} exited with {self.exit_code}" + + +class MetadataGenerationFailed(InstallationSubprocessError, InstallationError): + reference = "metadata-generation-failed" + + def __init__( + self, + *, + package_details: str, + ) -> None: + super(InstallationSubprocessError, self).__init__( + message="Encountered error while generating package metadata.", + context=escape(package_details), + hint_stmt="See above for details.", + note_stmt="This is an issue with the package mentioned above, not pip.", + ) + + def __str__(self) -> str: + return "metadata generation failed" + + +class HashErrors(InstallationError): + """Multiple HashError instances rolled into one for reporting""" + + def __init__(self) -> None: + self.errors: List["HashError"] = [] + + def append(self, error: "HashError") -> None: + self.errors.append(error) + + def __str__(self) -> str: + lines = [] + self.errors.sort(key=lambda e: e.order) + for cls, errors_of_cls in groupby(self.errors, lambda e: e.__class__): + lines.append(cls.head) + lines.extend(e.body() for e in errors_of_cls) + if lines: + return "\n".join(lines) + return "" + + def __bool__(self) -> bool: + return bool(self.errors) + + +class HashError(InstallationError): + """ + A failure to verify a package against known-good hashes + + :cvar order: An int sorting hash exception classes by difficulty of + recovery (lower being harder), so the user doesn't bother fretting + about unpinned packages when he has deeper issues, like VCS + dependencies, to deal with. Also keeps error reports in a + deterministic order. + :cvar head: A section heading for display above potentially many + exceptions of this kind + :ivar req: The InstallRequirement that triggered this error. This is + pasted on after the exception is instantiated, because it's not + typically available earlier. + + """ + + req: Optional["InstallRequirement"] = None + head = "" + order: int = -1 + + def body(self) -> str: + """Return a summary of me for display under the heading. + + This default implementation simply prints a description of the + triggering requirement. + + :param req: The InstallRequirement that provoked this error, with + its link already populated by the resolver's _populate_link(). + + """ + return f" {self._requirement_name()}" + + def __str__(self) -> str: + return f"{self.head}\n{self.body()}" + + def _requirement_name(self) -> str: + """Return a description of the requirement that triggered me. + + This default implementation returns long description of the req, with + line numbers + + """ + return str(self.req) if self.req else "unknown package" + + +class VcsHashUnsupported(HashError): + """A hash was provided for a version-control-system-based requirement, but + we don't have a method for hashing those.""" + + order = 0 + head = ( + "Can't verify hashes for these requirements because we don't " + "have a way to hash version control repositories:" + ) + + +class DirectoryUrlHashUnsupported(HashError): + """A hash was provided for a version-control-system-based requirement, but + we don't have a method for hashing those.""" + + order = 1 + head = ( + "Can't verify hashes for these file:// requirements because they " + "point to directories:" + ) + + +class HashMissing(HashError): + """A hash was needed for a requirement but is absent.""" + + order = 2 + head = ( + "Hashes are required in --require-hashes mode, but they are " + "missing from some requirements. Here is a list of those " + "requirements along with the hashes their downloaded archives " + "actually had. Add lines like these to your requirements files to " + "prevent tampering. (If you did not enable --require-hashes " + "manually, note that it turns on automatically when any package " + "has a hash.)" + ) + + def __init__(self, gotten_hash: str) -> None: + """ + :param gotten_hash: The hash of the (possibly malicious) archive we + just downloaded + """ + self.gotten_hash = gotten_hash + + def body(self) -> str: + # Dodge circular import. + from pip._internal.utils.hashes import FAVORITE_HASH + + package = None + if self.req: + # In the case of URL-based requirements, display the original URL + # seen in the requirements file rather than the package name, + # so the output can be directly copied into the requirements file. + package = ( + self.req.original_link + if self.req.is_direct + # In case someone feeds something downright stupid + # to InstallRequirement's constructor. + else getattr(self.req, "req", None) + ) + return " {} --hash={}:{}".format( + package or "unknown package", FAVORITE_HASH, self.gotten_hash + ) + + +class HashUnpinned(HashError): + """A requirement had a hash specified but was not pinned to a specific + version.""" + + order = 3 + head = ( + "In --require-hashes mode, all requirements must have their " + "versions pinned with ==. These do not:" + ) + + +class HashMismatch(HashError): + """ + Distribution file hash values don't match. + + :ivar package_name: The name of the package that triggered the hash + mismatch. Feel free to write to this after the exception is raise to + improve its error message. + + """ + + order = 4 + head = ( + "THESE PACKAGES DO NOT MATCH THE HASHES FROM THE REQUIREMENTS " + "FILE. If you have updated the package versions, please update " + "the hashes. Otherwise, examine the package contents carefully; " + "someone may have tampered with them." + ) + + def __init__(self, allowed: Dict[str, List[str]], gots: Dict[str, "_Hash"]) -> None: + """ + :param allowed: A dict of algorithm names pointing to lists of allowed + hex digests + :param gots: A dict of algorithm names pointing to hashes we + actually got from the files under suspicion + """ + self.allowed = allowed + self.gots = gots + + def body(self) -> str: + return f" {self._requirement_name()}:\n{self._hash_comparison()}" + + def _hash_comparison(self) -> str: + """ + Return a comparison of actual and expected hash values. + + Example:: + + Expected sha256 abcdeabcdeabcdeabcdeabcdeabcdeabcdeabcdeabcde + or 123451234512345123451234512345123451234512345 + Got bcdefbcdefbcdefbcdefbcdefbcdefbcdefbcdefbcdef + + """ + + def hash_then_or(hash_name: str) -> "chain[str]": + # For now, all the decent hashes have 6-char names, so we can get + # away with hard-coding space literals. + return chain([hash_name], repeat(" or")) + + lines: List[str] = [] + for hash_name, expecteds in self.allowed.items(): + prefix = hash_then_or(hash_name) + lines.extend((f" Expected {next(prefix)} {e}") for e in expecteds) + lines.append( + f" Got {self.gots[hash_name].hexdigest()}\n" + ) + return "\n".join(lines) + + +class UnsupportedPythonVersion(InstallationError): + """Unsupported python version according to Requires-Python package + metadata.""" + + +class ConfigurationFileCouldNotBeLoaded(ConfigurationError): + """When there are errors while loading a configuration file""" + + def __init__( + self, + reason: str = "could not be loaded", + fname: Optional[str] = None, + error: Optional[configparser.Error] = None, + ) -> None: + super().__init__(error) + self.reason = reason + self.fname = fname + self.error = error + + def __str__(self) -> str: + if self.fname is not None: + message_part = f" in {self.fname}." + else: + assert self.error is not None + message_part = f".\n{self.error}\n" + return f"Configuration file {self.reason}{message_part}" + + +_DEFAULT_EXTERNALLY_MANAGED_ERROR = f"""\ +The Python environment under {sys.prefix} is managed externally, and may not be +manipulated by the user. Please use specific tooling from the distributor of +the Python installation to interact with this environment instead. +""" + + +class ExternallyManagedEnvironment(DiagnosticPipError): + """The current environment is externally managed. + + This is raised when the current environment is externally managed, as + defined by `PEP 668`_. The ``EXTERNALLY-MANAGED`` configuration is checked + and displayed when the error is bubbled up to the user. + + :param error: The error message read from ``EXTERNALLY-MANAGED``. + """ + + reference = "externally-managed-environment" + + def __init__(self, error: Optional[str]) -> None: + if error is None: + context = Text(_DEFAULT_EXTERNALLY_MANAGED_ERROR) + else: + context = Text(error) + super().__init__( + message="This environment is externally managed", + context=context, + note_stmt=( + "If you believe this is a mistake, please contact your " + "Python installation or OS distribution provider. " + "You can override this, at the risk of breaking your Python " + "installation or OS, by passing --break-system-packages." + ), + hint_stmt=Text("See PEP 668 for the detailed specification."), + ) + + @staticmethod + def _iter_externally_managed_error_keys() -> Iterator[str]: + # LC_MESSAGES is in POSIX, but not the C standard. The most common + # platform that does not implement this category is Windows, where + # using other categories for console message localization is equally + # unreliable, so we fall back to the locale-less vendor message. This + # can always be re-evaluated when a vendor proposes a new alternative. + try: + category = locale.LC_MESSAGES + except AttributeError: + lang: Optional[str] = None + else: + lang, _ = locale.getlocale(category) + if lang is not None: + yield f"Error-{lang}" + for sep in ("-", "_"): + before, found, _ = lang.partition(sep) + if not found: + continue + yield f"Error-{before}" + yield "Error" + + @classmethod + def from_config( + cls, + config: Union[pathlib.Path, str], + ) -> "ExternallyManagedEnvironment": + parser = configparser.ConfigParser(interpolation=None) + try: + parser.read(config, encoding="utf-8") + section = parser["externally-managed"] + for key in cls._iter_externally_managed_error_keys(): + with contextlib.suppress(KeyError): + return cls(section[key]) + except KeyError: + pass + except (OSError, UnicodeDecodeError, configparser.ParsingError): + from pip._internal.utils._log import VERBOSE + + exc_info = logger.isEnabledFor(VERBOSE) + logger.warning("Failed to read %s", config, exc_info=exc_info) + return cls(None) |