chore: use SPEC 0 schedule for cibuildwheel

.github/workflows/test.yml

@@ -40,7 +40,7 @@ jobs:
         python_version: ['3.12']
         include:
         - os: ubuntu-latest
-          python_version: '3.8'
+          python_version: '3.10'
     timeout-minutes: 180
     steps:
     - uses: actions/checkout@v4

.pre-commit-config.yaml

@@ -24,9 +24,9 @@ repos:
   rev: v1.10.0
   hooks:
   - id: mypy
-    name: mypy 3.8 on cibuildwheel/
+    name: mypy 3.10 on cibuildwheel/
     exclude: ^cibuildwheel/resources/.*py|bin/generate_schema.py$
-    args: ["--python-version=3.8"]
+    args: ["--python-version=3.10"]
     additional_dependencies: &mypy-dependencies
       - bracex
       - nox

bin/update_pythons.py

@@ -7,7 +7,7 @@
 import logging
 from collections.abc import Mapping, MutableMapping
 from pathlib import Path
-from typing import Any, Final, Literal, TypedDict, Union
+from typing import Any, Final, Literal, TypedDict
 
 import click
 import requests
@@ -50,7 +50,7 @@ class ConfigMacOS(TypedDict):
     url: str
 
 
-AnyConfig = Union[ConfigWinCP, ConfigWinPP, ConfigMacOS]
+AnyConfig = ConfigWinCP | ConfigWinPP | ConfigMacOS
 
 
 # The following set of "Versions" classes allow the initial call to the APIs to

cibuildwheel/bashlex_eval.py

@@ -1,14 +1,18 @@
 from __future__ import annotations
 
 import subprocess
-from collections.abc import Iterable, Mapping, Sequence
+from collections.abc import (
+    Callable,
+    Iterable,
+    Mapping,
+    Sequence,
+)
 from dataclasses import dataclass
-from typing import Callable, Dict, List  # noqa: TID251
 
 import bashlex
 
 # a function that takes a command and the environment, and returns the result
-EnvironmentExecutor = Callable[[List[str], Dict[str, str]], str]
+EnvironmentExecutor = Callable[[list[str], dict[str, str]], str]
 
 
 def local_environment_executor(command: Sequence[str], env: Mapping[str, str]) -> str:

cibuildwheel/linux.py

@@ -3,10 +3,10 @@
 import subprocess
 import sys
 import textwrap
+from collections import OrderedDict
 from collections.abc import Iterable, Iterator, Sequence, Set
 from dataclasses import dataclass
 from pathlib import Path, PurePath, PurePosixPath
-from typing import OrderedDict, Tuple
 
 from packaging.version import Version
 
@@ -96,7 +96,7 @@ def get_build_steps(
     Groups PythonConfigurations into BuildSteps. Each BuildStep represents a
     separate container instance.
     """
-    steps = OrderedDict[Tuple[str, str, str, OCIContainerEngineConfig], BuildStep]()
+    steps = OrderedDict[tuple[str, str, str, OCIContainerEngineConfig], BuildStep]()
 
     for config in python_configurations:
         _, platform_tag = config.identifier.split("-", 1)

cibuildwheel/logger.py

@@ -5,11 +5,11 @@
 import re
 import sys
 import time
-from typing import IO, AnyStr, Final, Tuple
+from typing import IO, AnyStr, Final
 
 from .util import CIProvider, detect_ci_provider
 
-FoldPattern = Tuple[str, str]
+FoldPattern = tuple[str, str]
 DEFAULT_FOLD_PATTERN: Final[FoldPattern] = ("{name}", "")
 FOLD_PATTERNS: Final[dict[str, FoldPattern]] = {
     "azure": ("##[group]{name}", "##[endgroup]"),

cibuildwheel/macos.py

@@ -11,7 +11,7 @@
 from collections.abc import Sequence, Set
 from dataclasses import dataclass
 from pathlib import Path
-from typing import Literal, Tuple
+from typing import Literal
 
 from filelock import FileLock
 from packaging.version import Version
@@ -51,7 +51,7 @@
 )
 
 
-@functools.lru_cache(maxsize=None)
+@functools.cache
 def get_macos_version() -> tuple[int, int]:
     """
     Returns the macOS major/minor version, as a tuple, e.g. (10, 15) or (11, 0)
@@ -75,10 +75,10 @@ def get_macos_version() -> tuple[int, int]:
             capture_stdout=True,
         )
         version = tuple(map(int, version_str.split(".")[:2]))
-    return typing.cast(Tuple[int, int], version)
+    return typing.cast(tuple[int, int], version)
 
 
-@functools.lru_cache(maxsize=None)
+@functools.cache
 def get_test_macosx_deployment_target() -> str:
     version = get_macos_version()
     if version >= (11, 0):

cibuildwheel/oci_container.py

@@ -14,7 +14,7 @@
 from dataclasses import dataclass, field
 from pathlib import Path, PurePath, PurePosixPath
 from types import TracebackType
-from typing import IO, Dict, Literal
+from typing import IO, Literal
 
 from ._compat.typing import Self
 from .typing import PathOrStr, PopenBytes
@@ -398,7 +398,7 @@ def get_environment(self) -> dict[str, str]:
                 capture_output=True,
             )
         )
-        return typing.cast(Dict[str, str], env)
+        return typing.cast(dict[str, str], env)
 
     def environment_executor(self, command: Sequence[str], environment: dict[str, str]) -> str:
         # used as an EnvironmentExecutor to evaluate commands and capture output

cibuildwheel/options.py

@@ -9,9 +9,17 @@
 import functools
 import shlex
 import textwrap
-from collections.abc import Callable, Generator, Iterable, Iterator, Set
+from collections.abc import (
+    Callable,
+    Generator,
+    Iterable,
+    Iterator,
+    Mapping,
+    Sequence,
+    Set,
+)
 from pathlib import Path
-from typing import Any, Literal, Mapping, Sequence, TypedDict, Union  # noqa: TID251
+from typing import Any, Literal, TypedDict
 
 from packaging.specifiers import SpecifierSet
 
@@ -117,7 +125,7 @@ def architectures(self) -> set[Architecture]:
         return self.globals.architectures
 
 
-Setting = Union[Mapping[str, str], Sequence[str], str, int, bool]
+Setting = Mapping[str, str] | Sequence[str] | str | int | bool
 
 
 @dataclasses.dataclass(frozen=True)
@@ -258,7 +266,7 @@ def _stringify_setting(
             raise ConfigOptionError(msg)
         return list_sep.join(setting)
 
-    if isinstance(setting, (bool, int)):
+    if isinstance(setting, bool | int):
         return str(setting)
 
     return setting
@@ -838,7 +846,7 @@ def compute_options(
     return options
 
 
-@functools.lru_cache(maxsize=None)
+@functools.cache
 def _get_pinned_container_images() -> Mapping[str, Mapping[str, str]]:
     """
     This looks like a dict of dicts, e.g.

cibuildwheel/typing.py

@@ -16,7 +16,7 @@
 
 if typing.TYPE_CHECKING:
     PopenBytes = subprocess.Popen[bytes]
-    PathOrStr = Union[str, os.PathLike[str]]
+    PathOrStr = str | os.PathLike[str]
 else:
     PopenBytes = subprocess.Popen
     PathOrStr = Union[str, "os.PathLike[str]"]

cibuildwheel/util.py

@@ -19,7 +19,7 @@
 from collections.abc import Generator, Iterable, Mapping, MutableMapping, Sequence
 from dataclasses import dataclass
 from enum import Enum
-from functools import lru_cache
+from functools import cache
 from pathlib import Path, PurePath
 from tempfile import TemporaryDirectory
 from time import sleep
@@ -595,7 +595,7 @@ def get_pip_version(env: Mapping[str, str]) -> str:
     return pip_version
 
 
-@lru_cache(maxsize=None)
+@cache
 def ensure_node(major_version: str) -> Path:
     input_file = resources_dir / "nodejs.toml"
     with input_file.open("rb") as f:
@@ -627,7 +627,7 @@ def ensure_node(major_version: str) -> Path:
     return path
 
 
-@lru_cache(maxsize=None)
+@cache
 def _ensure_virtualenv(version: str) -> Path:
     version_parts = version.split(".")
     key = f"py{version_parts[0]}{version_parts[1]}"

cibuildwheel/windows.py

@@ -7,7 +7,7 @@
 import textwrap
 from collections.abc import MutableMapping, Sequence, Set
 from dataclasses import dataclass
-from functools import lru_cache
+from functools import cache
 from pathlib import Path
 
 from filelock import FileLock
@@ -98,7 +98,7 @@ def get_python_configurations(
     return python_configurations
 
 
-@lru_cache(maxsize=None)
+@cache
 def _ensure_nuget() -> Path:
     nuget = CIBW_CACHE_PATH / "nuget.exe"
     with FileLock(str(nuget) + ".lock"):

pyproject.toml

@@ -8,7 +8,7 @@ version = "2.19.1"
 description = "Build Python wheels on CI with minimal configuration."
 readme = "README.md"
 license = "BSD-2-Clause"
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 authors = [
     { name = "Joe Rickerby", email = "joerick@mac.com" },
 ]
@@ -30,8 +30,6 @@ classifiers = [
     "Natural Language :: English",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.8",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
@@ -106,7 +104,7 @@ log_cli_level = "info"
 
 
 [tool.mypy]
-python_version = "3.8"
+python_version = "3.10"
 files = [
     "cibuildwheel/*.py",
     "test/**/*.py",
@@ -149,7 +147,7 @@ ignore_missing_imports = true
 
 
 [tool.pylint]
-py-version = "3.8"
+py-version = "3.10"
 jobs = "0"
 fail-on = ["E", "F"]
 fail-under = "9.8"
@@ -186,7 +184,7 @@ messages_control.disable = [
 ]
 
 [tool.ruff]
-target-version = "py38"
+target-version = "py310"
 line-length = 100
 
 

test/conftest.py

@@ -2,7 +2,7 @@
 
 import json
 import subprocess
-from typing import Generator
+from collections.abc import Generator
 
 import pytest
 

test/test_projects/base.py

@@ -1,12 +1,12 @@
 from __future__ import annotations
 
 from pathlib import Path
-from typing import Any, Dict, Union
+from typing import Any
 
 import jinja2
 
-FilesDict = Dict[str, Union[str, jinja2.Template]]
-TemplateContext = Dict[str, Any]
+FilesDict = dict[str, str | jinja2.Template]
+TemplateContext = dict[str, Any]
 
 
 class TestProject: