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from __future__ import annotations
import os
from typing import Any
from setuptools import build_meta as _orig # type: ignore[import-not-found]
USE_MYPYC = os.getenv("CHARSET_NORMALIZER_USE_MYPYC", "0") == "1"
MYPYC_SPEC = "mypy>=1.4.1,<=1.17.1"
# Expose all the PEP 517 hooks from setuptools
get_requires_for_build_sdist = _orig.get_requires_for_build_sdist
prepare_metadata_for_build_wheel = _orig.prepare_metadata_for_build_wheel
build_wheel = _orig.build_wheel
build_sdist = _orig.build_sdist
if hasattr(_orig, "get_requires_for_build_editable"):
get_requires_for_build_editable = _orig.get_requires_for_build_editable
if hasattr(_orig, "prepare_metadata_for_build_editable"):
prepare_metadata_for_build_editable = _orig.prepare_metadata_for_build_editable
if hasattr(_orig, "build_editable"):
build_editable = _orig.build_editable
# Override the build requirements function to conditionally add Cython
def get_requires_for_build_wheel(
config_settings: dict[str, Any] | None = None,
) -> list[str]:
"""Get the build requirements, conditionally adding Mypy(C)."""
requires = _orig.get_requires_for_build_wheel(config_settings)
if USE_MYPYC and MYPYC_SPEC not in requires:
requires = list(requires) if requires else []
requires.append(MYPYC_SPEC)
return requires # type: ignore[no-any-return]
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