from __future__ import annotations import functools import os import platform import re import shutil import subprocess import sys import typing from collections.abc import Sequence, Set from dataclasses import dataclass from pathlib import Path from typing import Literal, Tuple from filelock import FileLock from packaging.version import Version from . import errors from ._compat.typing import assert_never from .architecture import Architecture from .environment import ParsedEnvironment from .logger import log from .options import Options from .typing import PathOrStr from .util import ( CIBW_CACHE_PATH, BuildFrontendConfig, BuildFrontendName, BuildSelector, call, combine_constraints, detect_ci_provider, download, find_compatible_wheel, find_uv, free_thread_enable_313, get_build_verbosity_extra_flags, get_pip_version, install_certifi_script, move_file, prepare_command, read_python_configs, shell, split_config_settings, test_fail_cwd_file, unwrap, virtualenv, ) @functools.lru_cache(maxsize=None) def get_macos_version() -> tuple[int, int]: """ Returns the macOS major/minor version, as a tuple, e.g. (10, 15) or (11, 0) These tuples can be used in comparisons, e.g. (10, 14) <= (11, 0) == True (10, 14) <= (10, 16) == True (11, 2) <= (11, 0) != True """ version_str, _, _ = platform.mac_ver() version = tuple(map(int, version_str.split(".")[:2])) if (10, 15) < version < (11, 0): # When built against an older macOS SDK, Python will report macOS 10.16 # instead of the real version. version_str = call( sys.executable, "-sS", "-c", "import platform; print(platform.mac_ver()[0])", env={"SYSTEM_VERSION_COMPAT": "0"}, capture_stdout=True, ) version = tuple(map(int, version_str.split(".")[:2])) return typing.cast(Tuple[int, int], version) @functools.lru_cache(maxsize=None) def get_test_macosx_deployment_target() -> str: version = get_macos_version() if version >= (11, 0): return f"{version[0]}.0" return f"{version[0]}.{version[1]}" def get_macos_sdks() -> list[str]: output = call("xcodebuild", "-showsdks", capture_stdout=True) return [m.group(1) for m in re.finditer(r"-sdk (macosx\S+)", output)] @dataclass(frozen=True) class PythonConfiguration: version: str identifier: str url: str def get_python_configurations( build_selector: BuildSelector, architectures: Set[Architecture] ) -> list[PythonConfiguration]: full_python_configs = read_python_configs("macos") python_configurations = [PythonConfiguration(**item) for item in full_python_configs] # filter out configs that don't match any of the selected architectures python_configurations = [ c for c in python_configurations if any(c.identifier.endswith(a.value) for a in architectures) ] # skip builds as required by BUILD/SKIP python_configurations = [c for c in python_configurations if build_selector(c.identifier)] # filter-out some cross-compilation configs with PyPy: # can't build arm64 on x86_64 # rosetta allows to build x86_64 on arm64 if platform.machine() == "x86_64": python_configurations_before = set(python_configurations) python_configurations = [ c for c in python_configurations if not (c.identifier.startswith("pp") and c.identifier.endswith("arm64")) ] removed_elements = python_configurations_before - set(python_configurations) if removed_elements: ids = ", ".join(c.identifier for c in removed_elements) log.quiet( unwrap( f""" Note: {ids} {'was' if len(removed_elements) == 1 else 'were'} selected, but can't be built on x86_64 so will be skipped automatically. """ ) ) return python_configurations def install_cpython(tmp: Path, version: str, url: str, free_threading: bool) -> Path: ft = "T" if free_threading else "" installation_path = Path(f"/Library/Frameworks/Python{ft}.framework/Versions/{version}") with FileLock(CIBW_CACHE_PATH / f"cpython{version}.lock"): installed_system_packages = call("pkgutil", "--pkgs", capture_stdout=True).splitlines() # if this version of python isn't installed, get it from python.org and install python_package_identifier = f"org.python.Python.Python{ft}Framework-{version}" if python_package_identifier not in installed_system_packages: if detect_ci_provider() is None: # if running locally, we don't want to install CPython with sudo # let the user know & provide a link to the installer msg = ( f"Error: CPython {version} is not installed.\n" "cibuildwheel will not perform system-wide installs when running outside of CI.\n" f"To build locally, install CPython {version} on this machine, or, disable this version of Python using CIBW_SKIP=cp{version.replace('.', '')}-macosx_*\n" f"\nDownload link: {url}" ) raise errors.FatalError(msg) pkg_path = tmp / "Python.pkg" # download the pkg download(url, pkg_path) # install args = [] if version.startswith("3.13"): # Python 3.13 is the first version to have a free-threading option args += ["-applyChoiceChangesXML", str(free_thread_enable_313.resolve())] call("sudo", "installer", "-pkg", pkg_path, *args, "-target", "/") pkg_path.unlink() env = os.environ.copy() env["PIP_DISABLE_PIP_VERSION_CHECK"] = "1" if free_threading: call(installation_path / f"bin/python{version}t", "-m", "ensurepip", env=env) call(installation_path / f"bin/python{version}t", install_certifi_script, env=env) else: call(installation_path / "bin/python3", install_certifi_script, env=env) return installation_path / "bin" / (f"python{version}t" if free_threading else "python3") def install_pypy(tmp: Path, url: str) -> Path: pypy_tar_bz2 = url.rsplit("/", 1)[-1] extension = ".tar.bz2" assert pypy_tar_bz2.endswith(extension) installation_path = CIBW_CACHE_PATH / pypy_tar_bz2[: -len(extension)] with FileLock(str(installation_path) + ".lock"): if not installation_path.exists(): downloaded_tar_bz2 = tmp / pypy_tar_bz2 download(url, downloaded_tar_bz2) installation_path.parent.mkdir(parents=True, exist_ok=True) call("tar", "-C", installation_path.parent, "-xf", downloaded_tar_bz2) downloaded_tar_bz2.unlink() return installation_path / "bin" / "pypy3" def setup_python( tmp: Path, python_configuration: PythonConfiguration, dependency_constraint_flags: Sequence[PathOrStr], environment: ParsedEnvironment, build_frontend: BuildFrontendName, ) -> tuple[Path, dict[str, str]]: if build_frontend == "build[uv]" and Version(python_configuration.version) < Version("3.8"): build_frontend = "build" uv_path = find_uv() use_uv = build_frontend == "build[uv]" and Version(python_configuration.version) >= Version( "3.8" ) tmp.mkdir() implementation_id = python_configuration.identifier.split("-")[0] log.step(f"Installing Python {implementation_id}...") if implementation_id.startswith("cp"): free_threading = "t-macos" in python_configuration.identifier base_python = install_cpython( tmp, python_configuration.version, python_configuration.url, free_threading ) elif implementation_id.startswith("pp"): base_python = install_pypy(tmp, python_configuration.url) else: msg = "Unknown Python implementation" raise ValueError(msg) assert ( base_python.exists() ), f"{base_python.name} not found, has {list(base_python.parent.iterdir())}" log.step("Setting up build environment...") venv_path = tmp / "venv" env = virtualenv( python_configuration.version, base_python, venv_path, dependency_constraint_flags, use_uv=use_uv, ) venv_bin_path = venv_path / "bin" assert venv_bin_path.exists() # Fix issue with site.py setting the wrong `sys.prefix`, `sys.exec_prefix`, # `sys.path`, ... for PyPy: https://foss.heptapod.net/pypy/pypy/issues/3175 # Also fix an issue with the shebang of installed scripts inside the # testing virtualenv- see https://github.com/theacodes/nox/issues/44 and # https://github.com/pypa/virtualenv/issues/620 # Also see https://github.com/python/cpython/pull/9516 env.pop("__PYVENV_LAUNCHER__", None) # we version pip ourselves, so we don't care about pip version checking env["PIP_DISABLE_PIP_VERSION_CHECK"] = "1" # upgrade pip to the version matching our constraints # if necessary, reinstall it to ensure that it's available on PATH as 'pip' if build_frontend == "build[uv]": assert uv_path is not None pip = [str(uv_path), "pip"] else: pip = ["python", "-m", "pip"] if not use_uv: call( *pip, "install", "--upgrade", "pip", *dependency_constraint_flags, env=env, cwd=venv_path, ) # Apply our environment after pip is ready env = environment.as_dictionary(prev_environment=env) # check what pip version we're on if not use_uv: assert (venv_bin_path / "pip").exists() call("which", "pip", env=env) call("pip", "--version", env=env) which_pip = call("which", "pip", env=env, capture_stdout=True).strip() if which_pip != str(venv_bin_path / "pip"): msg = "cibuildwheel: pip available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert pip above it." raise errors.FatalError(msg) # check what Python version we're on call("which", "python", env=env) call("python", "--version", env=env) which_python = call("which", "python", env=env, capture_stdout=True).strip() if which_python != str(venv_bin_path / "python"): msg = "cibuildwheel: python available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert python above it." raise errors.FatalError(msg) config_is_arm64 = python_configuration.identifier.endswith("arm64") config_is_universal2 = python_configuration.identifier.endswith("universal2") # Set MACOSX_DEPLOYMENT_TARGET, if the user didn't set it. # For arm64, the minimal deployment target is 11.0. # On x86_64 (or universal2), use 10.9 as a default. # CPython 3.13 needs 10.13. if config_is_arm64: default_target = "11.0" elif Version(python_configuration.version) >= Version("3.13"): default_target = "10.13" elif python_configuration.identifier.startswith("pp") and Version( python_configuration.version ) >= Version("3.9"): default_target = "10.15" else: default_target = "10.9" env.setdefault("MACOSX_DEPLOYMENT_TARGET", default_target) # This is a floor, it can't be set lower than the default_target. if Version(env["MACOSX_DEPLOYMENT_TARGET"]) < Version(default_target): log.warning( f"Bumping MACOSX_DEPLOYMENT_TARGET ({env['MACOSX_DEPLOYMENT_TARGET']}) to the minimum required ({default_target})." ) env["MACOSX_DEPLOYMENT_TARGET"] = default_target if python_configuration.version not in {"3.6", "3.7"}: if config_is_arm64: # macOS 11 is the first OS with arm64 support, so the wheels # have that as a minimum. env.setdefault("_PYTHON_HOST_PLATFORM", "macosx-11.0-arm64") env.setdefault("ARCHFLAGS", "-arch arm64") elif config_is_universal2: env.setdefault("_PYTHON_HOST_PLATFORM", "macosx-10.9-universal2") env.setdefault("ARCHFLAGS", "-arch arm64 -arch x86_64") elif python_configuration.identifier.endswith("x86_64"): # even on the macos11.0 Python installer, on the x86_64 side it's # compatible back to 10.9. env.setdefault("_PYTHON_HOST_PLATFORM", "macosx-10.9-x86_64") env.setdefault("ARCHFLAGS", "-arch x86_64") building_arm64 = config_is_arm64 or config_is_universal2 if building_arm64 and get_macos_version() < (10, 16) and "SDKROOT" not in env: # xcode 12.2 or higher can build arm64 on macos 10.15 or below, but # needs the correct SDK selected. sdks = get_macos_sdks() # Different versions of Xcode contain different SDK versions... # we're happy with anything newer than macOS 11.0 arm64_compatible_sdks = [s for s in sdks if not s.startswith("macosx10.")] if not arm64_compatible_sdks: log.warning( unwrap( """ SDK for building arm64-compatible wheels not found. You need Xcode 12.2 or later to build universal2 or arm64 wheels. """ ) ) else: env.setdefault("SDKROOT", arm64_compatible_sdks[0]) log.step("Installing build tools...") if build_frontend == "pip": call( "pip", "install", "--upgrade", "delocate", *dependency_constraint_flags, env=env, ) elif build_frontend == "build": call( "pip", "install", "--upgrade", "delocate", "build[virtualenv]", *dependency_constraint_flags, env=env, ) elif build_frontend == "build[uv]": assert uv_path is not None call( uv_path, "pip", "install", "--upgrade", "delocate", "build[virtualenv, uv]", *dependency_constraint_flags, env=env, ) else: assert_never(build_frontend) return base_python, env def build(options: Options, tmp_path: Path) -> None: python_configurations = get_python_configurations( options.globals.build_selector, options.globals.architectures ) if not python_configurations: return try: before_all_options_identifier = python_configurations[0].identifier before_all_options = options.build_options(before_all_options_identifier) if before_all_options.before_all: log.step("Running before_all...") env = before_all_options.environment.as_dictionary(prev_environment=os.environ) env.setdefault("MACOSX_DEPLOYMENT_TARGET", "10.9") before_all_prepared = prepare_command( before_all_options.before_all, project=".", package=before_all_options.package_dir ) shell(before_all_prepared, env=env) built_wheels: list[Path] = [] for config in python_configurations: build_options = options.build_options(config.identifier) build_frontend = build_options.build_frontend or BuildFrontendConfig("pip") use_uv = build_frontend.name == "build[uv]" and Version(config.version) >= Version( "3.8" ) uv_path = find_uv() if use_uv and uv_path is None: msg = "uv not found" raise AssertionError(msg) pip = ["pip"] if not use_uv else [str(uv_path), "pip"] log.build_start(config.identifier) identifier_tmp_dir = tmp_path / config.identifier identifier_tmp_dir.mkdir() built_wheel_dir = identifier_tmp_dir / "built_wheel" repaired_wheel_dir = identifier_tmp_dir / "repaired_wheel" config_is_arm64 = config.identifier.endswith("arm64") config_is_universal2 = config.identifier.endswith("universal2") dependency_constraint_flags: Sequence[PathOrStr] = [] if build_options.dependency_constraints: dependency_constraint_flags = [ "-c", build_options.dependency_constraints.get_for_python_version(config.version), ] base_python, env = setup_python( identifier_tmp_dir / "build", config, dependency_constraint_flags, build_options.environment, build_frontend.name, ) if not use_uv: pip_version = get_pip_version(env) compatible_wheel = find_compatible_wheel(built_wheels, config.identifier) if compatible_wheel: log.step_end() print( f"\nFound previously built wheel {compatible_wheel.name}, that's compatible with {config.identifier}. Skipping build step..." ) repaired_wheel = compatible_wheel else: if build_options.before_build: log.step("Running before_build...") before_build_prepared = prepare_command( build_options.before_build, project=".", package=build_options.package_dir ) shell(before_build_prepared, env=env) log.step("Building wheel...") built_wheel_dir.mkdir() extra_flags = split_config_settings( build_options.config_settings, build_frontend.name ) extra_flags += build_frontend.args build_env = env.copy() if not use_uv: build_env["VIRTUALENV_PIP"] = pip_version if build_options.dependency_constraints: constraint_path = build_options.dependency_constraints.get_for_python_version( config.version ) combine_constraints( build_env, constraint_path, identifier_tmp_dir if use_uv else None ) if build_frontend.name == "pip": extra_flags += get_build_verbosity_extra_flags(build_options.build_verbosity) # Path.resolve() is needed. Without it pip wheel may try to fetch package from pypi.org # see https://github.com/pypa/cibuildwheel/pull/369 call( "python", "-m", "pip", "wheel", build_options.package_dir.resolve(), f"--wheel-dir={built_wheel_dir}", "--no-deps", *extra_flags, env=build_env, ) elif build_frontend.name == "build" or build_frontend.name == "build[uv]": if not 0 <= build_options.build_verbosity < 2: msg = f"build_verbosity {build_options.build_verbosity} is not supported for build frontend. Ignoring." log.warning(msg) if use_uv and "--no-isolation" not in extra_flags and "-n" not in extra_flags: extra_flags.append("--installer=uv") call( "python", "-m", "build", build_options.package_dir, "--wheel", f"--outdir={built_wheel_dir}", *extra_flags, env=build_env, ) else: assert_never(build_frontend) built_wheel = next(built_wheel_dir.glob("*.whl")) repaired_wheel_dir.mkdir() if built_wheel.name.endswith("none-any.whl"): raise errors.NonPlatformWheelError() if build_options.repair_command: log.step("Repairing wheel...") if config_is_universal2: delocate_archs = "x86_64,arm64" elif config_is_arm64: delocate_archs = "arm64" else: delocate_archs = "x86_64" repair_command_prepared = prepare_command( build_options.repair_command, wheel=built_wheel, dest_dir=repaired_wheel_dir, delocate_archs=delocate_archs, ) shell(repair_command_prepared, env=env) else: shutil.move(str(built_wheel), repaired_wheel_dir) repaired_wheel = next(repaired_wheel_dir.glob("*.whl")) if repaired_wheel.name in {wheel.name for wheel in built_wheels}: raise errors.AlreadyBuiltWheelError(repaired_wheel.name) log.step_end() if build_options.test_command and build_options.test_selector(config.identifier): machine_arch = platform.machine() python_arch = call( "python", "-sSc", "import platform; print(platform.machine())", env=env, capture_stdout=True, ).strip() testing_archs: list[Literal["x86_64", "arm64"]] if config_is_arm64: testing_archs = ["arm64"] elif config_is_universal2: testing_archs = ["x86_64", "arm64"] else: testing_archs = ["x86_64"] for testing_arch in testing_archs: if config_is_universal2: arch_specific_identifier = f"{config.identifier}:{testing_arch}" if not build_options.test_selector(arch_specific_identifier): continue if machine_arch == "x86_64" and testing_arch == "arm64": if config_is_arm64: log.warning( unwrap( """ While arm64 wheels can be built on x86_64, they cannot be tested. Consider building arm64 wheels natively, if your CI provider offers this. To silence this warning, set `CIBW_TEST_SKIP: "*-macosx_arm64"`. """ ) ) elif config_is_universal2: log.warning( unwrap( """ While universal2 wheels can be built on x86_64, the arm64 part of the wheel cannot be tested on x86_64. Consider building universal2 wheels on an arm64 runner, if your CI provider offers this. Notably, an arm64 runner can also test the x86_64 part of the wheel, through Rosetta emulation. To silence this warning, set `CIBW_TEST_SKIP: "*-macosx_universal2:arm64"`. """ ) ) else: msg = "unreachable" raise RuntimeError(msg) # skip this test continue is_cp38 = config.identifier.startswith("cp38-") if testing_arch == "arm64" and is_cp38 and python_arch != "arm64": log.warning( unwrap( """ While cibuildwheel can build CPython 3.8 universal2/arm64 wheels, we cannot test the arm64 part of them, even when running on an Apple Silicon machine. This is because we use the x86_64 installer of CPython 3.8. See the discussion in https://github.com/pypa/cibuildwheel/pull/1169 for the details. To silence this warning, set `CIBW_TEST_SKIP: "cp38-macosx_*:arm64"`. """ ) ) # skip this test continue log.step( "Testing wheel..." if testing_arch == machine_arch else f"Testing wheel on {testing_arch}..." ) # set up a virtual environment to install and test from, to make sure # there are no dependencies that were pulled in at build time. if not use_uv: call("pip", "install", "virtualenv", *dependency_constraint_flags, env=env) venv_dir = identifier_tmp_dir / f"venv-test-{testing_arch}" arch_prefix = [] uv_arch_args = [] if testing_arch != machine_arch: if machine_arch == "arm64" and testing_arch == "x86_64": # rosetta2 will provide the emulation with just the arch prefix. arch_prefix = ["arch", "-x86_64"] uv_arch_args = ["--python-platform", "x86_64-apple-darwin"] else: msg = f"don't know how to emulate {testing_arch} on {machine_arch}" raise RuntimeError(msg) # define a custom 'call' function that adds the arch prefix each time call_with_arch = functools.partial(call, *arch_prefix) shell_with_arch = functools.partial(call, *arch_prefix, "/bin/sh", "-c") if use_uv: pip_install = functools.partial(call, *pip, "install", *uv_arch_args) call("uv", "venv", venv_dir, f"--python={base_python}", env=env) else: pip_install = functools.partial(call_with_arch, *pip, "install") # Use pip version from the initial env to ensure determinism venv_args = ["--no-periodic-update", f"--pip={pip_version}"] # In Python<3.12, setuptools & wheel are installed as well, use virtualenv embedded ones if Version(config.version) < Version("3.12"): venv_args.extend(("--setuptools=embed", "--wheel=embed")) call_with_arch("python", "-m", "virtualenv", *venv_args, venv_dir, env=env) virtualenv_env = env.copy() virtualenv_env["MACOSX_DEPLOYMENT_TARGET"] = get_test_macosx_deployment_target() virtualenv_env["PATH"] = os.pathsep.join( [ str(venv_dir / "bin"), virtualenv_env["PATH"], ] ) virtualenv_env["VIRTUAL_ENV"] = str(venv_dir) # check that we are using the Python from the virtual environment call_with_arch("which", "python", env=virtualenv_env) if build_options.before_test: before_test_prepared = prepare_command( build_options.before_test, project=".", package=build_options.package_dir, ) shell_with_arch(before_test_prepared, env=virtualenv_env) # install the wheel if is_cp38 and python_arch == "x86_64": virtualenv_env_install_wheel = virtualenv_env.copy() virtualenv_env_install_wheel["SYSTEM_VERSION_COMPAT"] = "0" log.notice( unwrap( """ Setting SYSTEM_VERSION_COMPAT=0 to ensure CPython 3.8 can get correct macOS version and allow installation of wheels with MACOSX_DEPLOYMENT_TARGET >= 11.0. See https://github.com/pypa/cibuildwheel/issues/1767 for the details. """ ) ) else: virtualenv_env_install_wheel = virtualenv_env pip_install( f"{repaired_wheel}{build_options.test_extras}", env=virtualenv_env_install_wheel, ) # test the wheel if build_options.test_requires: pip_install( *build_options.test_requires, env=virtualenv_env_install_wheel, ) # run the tests from a temp dir, with an absolute path in the command # (this ensures that Python runs the tests against the installed wheel # and not the repo code) test_command_prepared = prepare_command( build_options.test_command, project=Path(".").resolve(), package=build_options.package_dir.resolve(), wheel=repaired_wheel, ) test_cwd = identifier_tmp_dir / "test_cwd" test_cwd.mkdir(exist_ok=True) (test_cwd / "test_fail.py").write_text(test_fail_cwd_file.read_text()) shell_with_arch(test_command_prepared, cwd=test_cwd, env=virtualenv_env) # we're all done here; move it to output (overwrite existing) if compatible_wheel is None: output_wheel = build_options.output_dir.joinpath(repaired_wheel.name) moved_wheel = move_file(repaired_wheel, output_wheel) if moved_wheel != output_wheel.resolve(): log.warning( "{repaired_wheel} was moved to {moved_wheel} instead of {output_wheel}" ) built_wheels.append(output_wheel) # clean up shutil.rmtree(identifier_tmp_dir) log.build_end() except subprocess.CalledProcessError as error: msg = f"Command {error.cmd} failed with code {error.returncode}. {error.stdout or ''}" raise errors.FatalError(msg) from error