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"""Provide basic warnings used by setuptools modules. Using custom classes (other than ``UserWarning``) allow users to set ``PYTHONWARNINGS`` filters to run tests and prepare for upcoming changes in setuptools. """ from __future__ import annotations import os import warnings from datetime import date from inspect import cleandoc from textwrap import indent from typing import Tuple _DueDate = Tuple[int, int, int] # time tuple _INDENT = 8 * " " _TEMPLATE = f"""{80 * '*'}\n{{details}}\n{80 * '*'}""" class SetuptoolsWarning(UserWarning): """Base class in ``setuptools`` warning hierarchy.""" @classmethod def emit( cls, summary: str | None = None, details: str | None = None, due_date: _DueDate | None = None, see_docs: str | None = None, see_url: str | None = None, stacklevel: int = 2, **kwargs, ): """Private: reserved for ``setuptools`` internal use only""" # Default values: summary_ = summary or getattr(cls, "_SUMMARY", None) or "" details_ = details or getattr(cls, "_DETAILS", None) or "" due_date = due_date or getattr(cls, "_DUE_DATE", None) docs_ref = see_docs or getattr(cls, "_SEE_DOCS", None) docs_url = docs_ref and f"https://setuptools.pypa.io/en/latest/{docs_ref}" see_url = see_url or getattr(cls, "_SEE_URL", None) due = date(*due_date) if due_date else None text = cls._format(summary_, details_, due, see_url or docs_url, kwargs) if due and due < date.today() and _should_enforce(): raise cls(text) warnings.warn(text, cls, stacklevel=stacklevel + 1) @classmethod def _format( cls, summary: str, details: str, due_date: date | None = None, see_url: str | None = None, format_args: dict | None = None, ): """Private: reserved for ``setuptools`` internal use only""" today = date.today() summary = cleandoc(summary).format_map(format_args or {}) possible_parts = [ cleandoc(details).format_map(format_args or {}), ( f"\nBy {due_date:%Y-%b-%d}, you need to update your project and remove " "deprecated calls\nor your builds will no longer be supported." if due_date and due_date > today else None ), ( "\nThis deprecation is overdue, please update your project and remove " "deprecated\ncalls to avoid build errors in the future." if due_date and due_date < today else None ), (f"\nSee {see_url} for details." if see_url else None), ] parts = [x for x in possible_parts if x] if parts: body = indent(_TEMPLATE.format(details="\n".join(parts)), _INDENT) return "\n".join([summary, "!!\n", body, "\n!!"]) return summary class InformationOnly(SetuptoolsWarning): """Currently there is no clear way of displaying messages to the users that use the setuptools backend directly via ``pip``. The only thing that might work is a warning, although it is not the most appropriate tool for the job... See pypa/packaging-problems#558. """ class SetuptoolsDeprecationWarning(SetuptoolsWarning): """ Base class for warning deprecations in ``setuptools`` This class is not derived from ``DeprecationWarning``, and as such is visible by default. """ def _should_enforce(): enforce = os.getenv("SETUPTOOLS_ENFORCE_DEPRECATION", "false").lower() return enforce in ("true", "on", "ok", "1")