499 lines
19 KiB
Python
499 lines
19 KiB
Python
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"""
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Load setuptools configuration from ``pyproject.toml`` files.
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**PRIVATE MODULE**: API reserved for setuptools internal usage only.
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"""
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import logging
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import os
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import warnings
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from contextlib import contextmanager
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from functools import partial
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from typing import TYPE_CHECKING, Callable, Dict, Optional, Mapping, Set, Union
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from setuptools.errors import FileError, OptionError
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from . import expand as _expand
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from ._apply_pyprojecttoml import apply as _apply
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from ._apply_pyprojecttoml import _PREVIOUSLY_DEFINED, _WouldIgnoreField
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if TYPE_CHECKING:
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from setuptools.dist import Distribution # noqa
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_Path = Union[str, os.PathLike]
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_logger = logging.getLogger(__name__)
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def load_file(filepath: _Path) -> dict:
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from setuptools.extern import tomli # type: ignore
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with open(filepath, "rb") as file:
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return tomli.load(file)
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def validate(config: dict, filepath: _Path) -> bool:
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from . import _validate_pyproject as validator
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trove_classifier = validator.FORMAT_FUNCTIONS.get("trove-classifier")
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if hasattr(trove_classifier, "_disable_download"):
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# Improve reproducibility by default. See issue 31 for validate-pyproject.
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trove_classifier._disable_download() # type: ignore
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try:
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return validator.validate(config)
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except validator.ValidationError as ex:
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summary = f"configuration error: {ex.summary}"
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if ex.name.strip("`") != "project":
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# Probably it is just a field missing/misnamed, not worthy the verbosity...
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_logger.debug(summary)
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_logger.debug(ex.details)
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error = f"invalid pyproject.toml config: {ex.name}."
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raise ValueError(f"{error}\n{summary}") from None
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def apply_configuration(
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dist: "Distribution",
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filepath: _Path,
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ignore_option_errors=False,
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) -> "Distribution":
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"""Apply the configuration from a ``pyproject.toml`` file into an existing
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distribution object.
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"""
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config = read_configuration(filepath, True, ignore_option_errors, dist)
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return _apply(dist, config, filepath)
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def read_configuration(
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filepath: _Path,
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expand=True,
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ignore_option_errors=False,
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dist: Optional["Distribution"] = None,
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):
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"""Read given configuration file and returns options from it as a dict.
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:param str|unicode filepath: Path to configuration file in the ``pyproject.toml``
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format.
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:param bool expand: Whether to expand directives and other computed values
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(i.e. post-process the given configuration)
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:param bool ignore_option_errors: Whether to silently ignore
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options, values of which could not be resolved (e.g. due to exceptions
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in directives such as file:, attr:, etc.).
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If False exceptions are propagated as expected.
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:param Distribution|None: Distribution object to which the configuration refers.
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If not given a dummy object will be created and discarded after the
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configuration is read. This is used for auto-discovery of packages and in the
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case a dynamic configuration (e.g. ``attr`` or ``cmdclass``) is expanded.
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When ``expand=False`` this object is simply ignored.
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:rtype: dict
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"""
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filepath = os.path.abspath(filepath)
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if not os.path.isfile(filepath):
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raise FileError(f"Configuration file {filepath!r} does not exist.")
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asdict = load_file(filepath) or {}
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project_table = asdict.get("project", {})
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tool_table = asdict.get("tool", {})
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setuptools_table = tool_table.get("setuptools", {})
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if not asdict or not (project_table or setuptools_table):
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return {} # User is not using pyproject to configure setuptools
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if setuptools_table:
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# TODO: Remove the following once the feature stabilizes:
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msg = "Support for `[tool.setuptools]` in `pyproject.toml` is still *beta*."
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warnings.warn(msg, _BetaConfiguration)
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# There is an overall sense in the community that making include_package_data=True
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# the default would be an improvement.
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# `ini2toml` backfills include_package_data=False when nothing is explicitly given,
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# therefore setting a default here is backwards compatible.
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orig_setuptools_table = setuptools_table.copy()
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if dist and getattr(dist, "include_package_data", None) is not None:
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setuptools_table.setdefault("include-package-data", dist.include_package_data)
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else:
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setuptools_table.setdefault("include-package-data", True)
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# Persist changes:
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asdict["tool"] = tool_table
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tool_table["setuptools"] = setuptools_table
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try:
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# Don't complain about unrelated errors (e.g. tools not using the "tool" table)
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subset = {"project": project_table, "tool": {"setuptools": setuptools_table}}
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validate(subset, filepath)
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except Exception as ex:
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# TODO: Remove the following once the feature stabilizes:
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if _skip_bad_config(project_table, orig_setuptools_table, dist):
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return {}
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# TODO: After the previous statement is removed the try/except can be replaced
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# by the _ignore_errors context manager.
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if ignore_option_errors:
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_logger.debug(f"ignored error: {ex.__class__.__name__} - {ex}")
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else:
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raise # re-raise exception
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if expand:
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root_dir = os.path.dirname(filepath)
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return expand_configuration(asdict, root_dir, ignore_option_errors, dist)
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return asdict
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def _skip_bad_config(
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project_cfg: dict, setuptools_cfg: dict, dist: Optional["Distribution"]
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) -> bool:
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"""Be temporarily forgiving with invalid ``pyproject.toml``"""
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# See pypa/setuptools#3199 and pypa/cibuildwheel#1064
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if dist is None or (
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dist.metadata.name is None
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and dist.metadata.version is None
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and dist.install_requires is None
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):
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# It seems that the build is not getting any configuration from other places
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return False
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if setuptools_cfg:
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# If `[tool.setuptools]` is set, then `pyproject.toml` config is intentional
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return False
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given_config = set(project_cfg.keys())
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popular_subset = {"name", "version", "python_requires", "requires-python"}
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if given_config <= popular_subset:
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# It seems that the docs in cibuildtool has been inadvertently encouraging users
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# to create `pyproject.toml` files that are not compliant with the standards.
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# Let's be forgiving for the time being.
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warnings.warn(_InvalidFile.message(), _InvalidFile, stacklevel=2)
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return True
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return False
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def expand_configuration(
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config: dict,
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root_dir: Optional[_Path] = None,
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ignore_option_errors: bool = False,
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dist: Optional["Distribution"] = None,
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) -> dict:
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"""Given a configuration with unresolved fields (e.g. dynamic, cmdclass, ...)
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find their final values.
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:param dict config: Dict containing the configuration for the distribution
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:param str root_dir: Top-level directory for the distribution/project
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(the same directory where ``pyproject.toml`` is place)
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:param bool ignore_option_errors: see :func:`read_configuration`
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:param Distribution|None: Distribution object to which the configuration refers.
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If not given a dummy object will be created and discarded after the
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configuration is read. Used in the case a dynamic configuration
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(e.g. ``attr`` or ``cmdclass``).
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:rtype: dict
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"""
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return _ConfigExpander(config, root_dir, ignore_option_errors, dist).expand()
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class _ConfigExpander:
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def __init__(
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self,
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config: dict,
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root_dir: Optional[_Path] = None,
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ignore_option_errors: bool = False,
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dist: Optional["Distribution"] = None,
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):
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self.config = config
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self.root_dir = root_dir or os.getcwd()
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self.project_cfg = config.get("project", {})
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self.dynamic = self.project_cfg.get("dynamic", [])
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self.setuptools_cfg = config.get("tool", {}).get("setuptools", {})
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self.dynamic_cfg = self.setuptools_cfg.get("dynamic", {})
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self.ignore_option_errors = ignore_option_errors
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self._dist = dist
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self._referenced_files: Set[str] = set()
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def _ensure_dist(self) -> "Distribution":
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from setuptools.dist import Distribution
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attrs = {"src_root": self.root_dir, "name": self.project_cfg.get("name", None)}
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return self._dist or Distribution(attrs)
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def _process_field(self, container: dict, field: str, fn: Callable):
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if field in container:
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with _ignore_errors(self.ignore_option_errors):
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container[field] = fn(container[field])
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def _canonic_package_data(self, field="package-data"):
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package_data = self.setuptools_cfg.get(field, {})
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return _expand.canonic_package_data(package_data)
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def expand(self):
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self._expand_packages()
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self._canonic_package_data()
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self._canonic_package_data("exclude-package-data")
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# A distribution object is required for discovering the correct package_dir
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dist = self._ensure_dist()
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ctx = _EnsurePackagesDiscovered(dist, self.project_cfg, self.setuptools_cfg)
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with ctx as ensure_discovered:
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package_dir = ensure_discovered.package_dir
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self._expand_data_files()
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self._expand_cmdclass(package_dir)
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self._expand_all_dynamic(dist, package_dir)
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dist._referenced_files.update(self._referenced_files)
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return self.config
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def _expand_packages(self):
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packages = self.setuptools_cfg.get("packages")
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if packages is None or isinstance(packages, (list, tuple)):
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return
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find = packages.get("find")
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if isinstance(find, dict):
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find["root_dir"] = self.root_dir
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find["fill_package_dir"] = self.setuptools_cfg.setdefault("package-dir", {})
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with _ignore_errors(self.ignore_option_errors):
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self.setuptools_cfg["packages"] = _expand.find_packages(**find)
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def _expand_data_files(self):
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data_files = partial(_expand.canonic_data_files, root_dir=self.root_dir)
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self._process_field(self.setuptools_cfg, "data-files", data_files)
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def _expand_cmdclass(self, package_dir: Mapping[str, str]):
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root_dir = self.root_dir
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cmdclass = partial(_expand.cmdclass, package_dir=package_dir, root_dir=root_dir)
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self._process_field(self.setuptools_cfg, "cmdclass", cmdclass)
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def _expand_all_dynamic(self, dist: "Distribution", package_dir: Mapping[str, str]):
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special = ( # need special handling
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"version",
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"readme",
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"entry-points",
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"scripts",
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"gui-scripts",
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"classifiers",
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"dependencies",
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"optional-dependencies",
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)
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# `_obtain` functions are assumed to raise appropriate exceptions/warnings.
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obtained_dynamic = {
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field: self._obtain(dist, field, package_dir)
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for field in self.dynamic
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if field not in special
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}
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obtained_dynamic.update(
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self._obtain_entry_points(dist, package_dir) or {},
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version=self._obtain_version(dist, package_dir),
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readme=self._obtain_readme(dist),
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classifiers=self._obtain_classifiers(dist),
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dependencies=self._obtain_dependencies(dist),
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optional_dependencies=self._obtain_optional_dependencies(dist),
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)
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# `None` indicates there is nothing in `tool.setuptools.dynamic` but the value
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# might have already been set by setup.py/extensions, so avoid overwriting.
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updates = {k: v for k, v in obtained_dynamic.items() if v is not None}
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self.project_cfg.update(updates)
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def _ensure_previously_set(self, dist: "Distribution", field: str):
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previous = _PREVIOUSLY_DEFINED[field](dist)
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if previous is None and not self.ignore_option_errors:
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msg = (
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f"No configuration found for dynamic {field!r}.\n"
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"Some dynamic fields need to be specified via `tool.setuptools.dynamic`"
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"\nothers must be specified via the equivalent attribute in `setup.py`."
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)
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raise OptionError(msg)
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def _expand_directive(
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self, specifier: str, directive, package_dir: Mapping[str, str]
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):
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from setuptools.extern.more_itertools import always_iterable # type: ignore
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with _ignore_errors(self.ignore_option_errors):
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root_dir = self.root_dir
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if "file" in directive:
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self._referenced_files.update(always_iterable(directive["file"]))
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return _expand.read_files(directive["file"], root_dir)
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if "attr" in directive:
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return _expand.read_attr(directive["attr"], package_dir, root_dir)
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raise ValueError(f"invalid `{specifier}`: {directive!r}")
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return None
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def _obtain(self, dist: "Distribution", field: str, package_dir: Mapping[str, str]):
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if field in self.dynamic_cfg:
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return self._expand_directive(
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f"tool.setuptools.dynamic.{field}",
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self.dynamic_cfg[field],
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package_dir,
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)
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self._ensure_previously_set(dist, field)
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return None
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def _obtain_version(self, dist: "Distribution", package_dir: Mapping[str, str]):
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# Since plugins can set version, let's silently skip if it cannot be obtained
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if "version" in self.dynamic and "version" in self.dynamic_cfg:
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return _expand.version(self._obtain(dist, "version", package_dir))
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return None
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def _obtain_readme(self, dist: "Distribution") -> Optional[Dict[str, str]]:
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if "readme" not in self.dynamic:
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return None
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dynamic_cfg = self.dynamic_cfg
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if "readme" in dynamic_cfg:
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return {
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"text": self._obtain(dist, "readme", {}),
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"content-type": dynamic_cfg["readme"].get("content-type", "text/x-rst"),
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}
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self._ensure_previously_set(dist, "readme")
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return None
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def _obtain_entry_points(
|
||
|
|
self, dist: "Distribution", package_dir: Mapping[str, str]
|
||
|
|
) -> Optional[Dict[str, dict]]:
|
||
|
|
fields = ("entry-points", "scripts", "gui-scripts")
|
||
|
|
if not any(field in self.dynamic for field in fields):
|
||
|
|
return None
|
||
|
|
|
||
|
|
text = self._obtain(dist, "entry-points", package_dir)
|
||
|
|
if text is None:
|
||
|
|
return None
|
||
|
|
|
||
|
|
groups = _expand.entry_points(text)
|
||
|
|
expanded = {"entry-points": groups}
|
||
|
|
|
||
|
|
def _set_scripts(field: str, group: str):
|
||
|
|
if group in groups:
|
||
|
|
value = groups.pop(group)
|
||
|
|
if field not in self.dynamic:
|
||
|
|
msg = _WouldIgnoreField.message(field, value)
|
||
|
|
warnings.warn(msg, _WouldIgnoreField)
|
||
|
|
# TODO: Don't set field when support for pyproject.toml stabilizes
|
||
|
|
# instead raise an error as specified in PEP 621
|
||
|
|
expanded[field] = value
|
||
|
|
|
||
|
|
_set_scripts("scripts", "console_scripts")
|
||
|
|
_set_scripts("gui-scripts", "gui_scripts")
|
||
|
|
|
||
|
|
return expanded
|
||
|
|
|
||
|
|
def _obtain_classifiers(self, dist: "Distribution"):
|
||
|
|
if "classifiers" in self.dynamic:
|
||
|
|
value = self._obtain(dist, "classifiers", {})
|
||
|
|
if value:
|
||
|
|
return value.splitlines()
|
||
|
|
return None
|
||
|
|
|
||
|
|
def _obtain_dependencies(self, dist: "Distribution"):
|
||
|
|
if "dependencies" in self.dynamic:
|
||
|
|
value = self._obtain(dist, "dependencies", {})
|
||
|
|
if value:
|
||
|
|
return _parse_requirements_list(value)
|
||
|
|
return None
|
||
|
|
|
||
|
|
def _obtain_optional_dependencies(self, dist: "Distribution"):
|
||
|
|
if "optional-dependencies" not in self.dynamic:
|
||
|
|
return None
|
||
|
|
if "optional-dependencies" in self.dynamic_cfg:
|
||
|
|
optional_dependencies_map = self.dynamic_cfg["optional-dependencies"]
|
||
|
|
assert isinstance(optional_dependencies_map, dict)
|
||
|
|
return {
|
||
|
|
group: _parse_requirements_list(self._expand_directive(
|
||
|
|
f"tool.setuptools.dynamic.optional-dependencies.{group}",
|
||
|
|
directive,
|
||
|
|
{},
|
||
|
|
))
|
||
|
|
for group, directive in optional_dependencies_map.items()
|
||
|
|
}
|
||
|
|
self._ensure_previously_set(dist, "optional-dependencies")
|
||
|
|
return None
|
||
|
|
|
||
|
|
|
||
|
|
def _parse_requirements_list(value):
|
||
|
|
return [
|
||
|
|
line
|
||
|
|
for line in value.splitlines()
|
||
|
|
if line.strip() and not line.strip().startswith("#")
|
||
|
|
]
|
||
|
|
|
||
|
|
|
||
|
|
@contextmanager
|
||
|
|
def _ignore_errors(ignore_option_errors: bool):
|
||
|
|
if not ignore_option_errors:
|
||
|
|
yield
|
||
|
|
return
|
||
|
|
|
||
|
|
try:
|
||
|
|
yield
|
||
|
|
except Exception as ex:
|
||
|
|
_logger.debug(f"ignored error: {ex.__class__.__name__} - {ex}")
|
||
|
|
|
||
|
|
|
||
|
|
class _EnsurePackagesDiscovered(_expand.EnsurePackagesDiscovered):
|
||
|
|
def __init__(
|
||
|
|
self, distribution: "Distribution", project_cfg: dict, setuptools_cfg: dict
|
||
|
|
):
|
||
|
|
super().__init__(distribution)
|
||
|
|
self._project_cfg = project_cfg
|
||
|
|
self._setuptools_cfg = setuptools_cfg
|
||
|
|
|
||
|
|
def __enter__(self):
|
||
|
|
"""When entering the context, the values of ``packages``, ``py_modules`` and
|
||
|
|
``package_dir`` that are missing in ``dist`` are copied from ``setuptools_cfg``.
|
||
|
|
"""
|
||
|
|
dist, cfg = self._dist, self._setuptools_cfg
|
||
|
|
package_dir: Dict[str, str] = cfg.setdefault("package-dir", {})
|
||
|
|
package_dir.update(dist.package_dir or {})
|
||
|
|
dist.package_dir = package_dir # needs to be the same object
|
||
|
|
|
||
|
|
dist.set_defaults._ignore_ext_modules() # pyproject.toml-specific behaviour
|
||
|
|
|
||
|
|
# Set `name`, `py_modules` and `packages` in dist to short-circuit
|
||
|
|
# auto-discovery, but avoid overwriting empty lists purposefully set by users.
|
||
|
|
if dist.metadata.name is None:
|
||
|
|
dist.metadata.name = self._project_cfg.get("name")
|
||
|
|
if dist.py_modules is None:
|
||
|
|
dist.py_modules = cfg.get("py-modules")
|
||
|
|
if dist.packages is None:
|
||
|
|
dist.packages = cfg.get("packages")
|
||
|
|
|
||
|
|
return super().__enter__()
|
||
|
|
|
||
|
|
def __exit__(self, exc_type, exc_value, traceback):
|
||
|
|
"""When exiting the context, if values of ``packages``, ``py_modules`` and
|
||
|
|
``package_dir`` are missing in ``setuptools_cfg``, copy from ``dist``.
|
||
|
|
"""
|
||
|
|
# If anything was discovered set them back, so they count in the final config.
|
||
|
|
self._setuptools_cfg.setdefault("packages", self._dist.packages)
|
||
|
|
self._setuptools_cfg.setdefault("py-modules", self._dist.py_modules)
|
||
|
|
return super().__exit__(exc_type, exc_value, traceback)
|
||
|
|
|
||
|
|
|
||
|
|
class _BetaConfiguration(UserWarning):
|
||
|
|
"""Explicitly inform users that some `pyproject.toml` configuration is *beta*"""
|
||
|
|
|
||
|
|
|
||
|
|
class _InvalidFile(UserWarning):
|
||
|
|
"""The given `pyproject.toml` file is invalid and would be ignored.
|
||
|
|
!!\n\n
|
||
|
|
############################
|
||
|
|
# Invalid `pyproject.toml` #
|
||
|
|
############################
|
||
|
|
|
||
|
|
Any configurations in `pyproject.toml` will be ignored.
|
||
|
|
Please note that future releases of setuptools will halt the build process
|
||
|
|
if an invalid file is given.
|
||
|
|
|
||
|
|
To prevent setuptools from considering `pyproject.toml` please
|
||
|
|
DO NOT include the `[project]` or `[tool.setuptools]` tables in your file.
|
||
|
|
\n\n!!
|
||
|
|
"""
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def message(cls):
|
||
|
|
from inspect import cleandoc
|
||
|
|
return cleandoc(cls.__doc__)
|