fix: faster CLI on Python 3.15 with lazy imports

Author: henryiii

cibuildwheel/__main__.py

@@ -1,3 +1,31 @@
+__lazy_modules__ = [
+    "argparse",
+    "cibuildwheel.architecture",
+    "cibuildwheel.ci",
+    "cibuildwheel.logger",
+    "cibuildwheel.options",
+    "cibuildwheel.platforms",
+    "cibuildwheel.selector",
+    "cibuildwheel.typing",
+    "cibuildwheel.util",
+    "cibuildwheel.util.file",
+    "cibuildwheel.util.helpers",
+    "cibuildwheel.util.resources",
+    "collections",
+    "collections.abc",
+    "contextlib",
+    "functools",
+    "os",
+    "pathlib",
+    "shutil",
+    "sys",
+    "tarfile",
+    "tempfile",
+    "textwrap",
+    "traceback",
+    "typing",
+]
+
 import argparse
 import contextlib
 import dataclasses

cibuildwheel/architecture.py

@@ -1,3 +1,14 @@
+__lazy_modules__ = [
+    "cibuildwheel.typing",
+    "collections",
+    "collections.abc",
+    "platform",
+    "re",
+    "shutil",
+    "subprocess",
+    "sys",
+]
+
 import platform as platform_module
 import re
 import shutil

cibuildwheel/bashlex_eval.py

@@ -1,3 +1,5 @@
+__lazy_modules__ = ["bashlex", "subprocess"]
+
 import dataclasses
 import subprocess
 from collections.abc import (

cibuildwheel/ci.py

@@ -1,3 +1,5 @@
+__lazy_modules__ = ["cibuildwheel.util.helpers", "os"]
+
 import os
 import re
 from enum import Enum

cibuildwheel/environment.py

@@ -1,3 +1,5 @@
+__lazy_modules__ = ["bashlex", "bashlex.errors", "collections", "collections.abc"]
+
 import dataclasses
 from collections.abc import Mapping, Sequence
 from typing import Any, Protocol

cibuildwheel/errors.py

@@ -4,6 +4,8 @@
 semantically clear and unique.
 """
 
+__lazy_modules__ = ["textwrap"]
+
 import textwrap
 
 

cibuildwheel/extra.py

@@ -2,6 +2,17 @@
 These are utilities for the `/bin` scripts, not for the `cibuildwheel` program.
 """
 
+__lazy_modules__ = [
+    "collections",
+    "collections.abc",
+    "io",
+    "json",
+    "time",
+    "urllib",
+    "urllib.error",
+    "urllib.request",
+]
+
 import json
 import time
 import typing

cibuildwheel/frontend.py

@@ -1,3 +1,11 @@
+__lazy_modules__ = [
+    "cibuildwheel.logger",
+    "cibuildwheel.util.helpers",
+    "collections",
+    "collections.abc",
+    "shlex",
+]
+
 import dataclasses
 import shlex
 import typing

cibuildwheel/logger.py

@@ -1,3 +1,21 @@
+__lazy_modules__ = [
+    "cibuildwheel.ci",
+    "codecs",
+    "collections",
+    "collections.abc",
+    "contextlib",
+    "functools",
+    "hashlib",
+    "humanize",
+    "io",
+    "os",
+    "pathlib",
+    "re",
+    "sys",
+    "textwrap",
+    "time",
+]
+
 import codecs
 import contextlib
 import dataclasses

cibuildwheel/oci_container.py

@@ -1,3 +1,26 @@
+__lazy_modules__ = [
+    "cibuildwheel.ci",
+    "cibuildwheel.errors",
+    "cibuildwheel.logger",
+    "cibuildwheel.typing",
+    "cibuildwheel.util.cmd",
+    "cibuildwheel.util.helpers",
+    "collections",
+    "collections.abc",
+    "io",
+    "json",
+    "os",
+    "pathlib",
+    "platform",
+    "shlex",
+    "shutil",
+    "subprocess",
+    "sys",
+    "textwrap",
+    "types",
+    "uuid",
+]
+
 import dataclasses
 import io
 import json