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--- /dev/null
+++ b/Apple/__main__.py
@@ -0,0 +1,1034 @@
+#!/usr/bin/env python3
+##########################################################################
+# Apple XCframework build script
+#
+# This script simplifies the process of configuring, compiling and packaging an
+# XCframework for an Apple platform.
+#
+# At present, it supports iOS, tvOS, visionOS and watchOS, but it has been
+# constructed so that it could be used on any Apple platform.
+#
+# The simplest entry point is:
+#
+# $ python Apple ci iOS
+#
+# (replace iOS with tvOS, visionOS or watchOS as required.)
+#
+# which will:
+# * Clean any pre-existing build artefacts
+# * Configure and make a Python that can be used for the build
+# * Configure and make a Python for each supported iOS/tvOS architecture and ABI
+# * Combine the outputs of the builds from the previous step into a single
+# XCframework, merging binaries into a "fat" binary if necessary
+# * Clone a copy of the testbed, configured to use the XCframework
+# * Construct a tarball containing the release artefacts
+# * Run the test suite using the generated XCframework.
+#
+# This is the complete sequence that would be needed in CI to build and test a
+# candidate release artefact.
+#
+# Each individual step can be invoked individually - there are commands to
+# clean, configure-build, make-build, configure-host, make-host, package, and
+# test.
+#
+# There is also a build command that can be used to combine the configure and
+# make steps for the build Python, an individual host, all hosts, or all builds.
+# #########################################################################
+from __future__ import annotations
+
+import argparse
+import os
+import platform
+import re
+import shlex
+import shutil
+import signal
+import subprocess
+import sys
+import sysconfig
+import time
+from collections.abc import Sequence
+from contextlib import contextmanager
+from datetime import datetime, timezone
+from os.path import basename, relpath
+from pathlib import Path
+from subprocess import CalledProcessError
+from typing import Callable
+
+EnvironmentT = dict[str, str]
+ArgsT = Sequence[str | Path]
+
+SCRIPT_NAME = Path(__file__).name
+PYTHON_DIR = Path(__file__).resolve().parent.parent
+
+CROSS_BUILD_DIR = PYTHON_DIR / "cross-build"
+
+HOSTS: dict[str, dict[str, dict[str, str]]] = {
+ # Structure of this data:
+ # * Platform identifier
+ # * an XCframework slice that must exist for that platform
+ # * a host triple: the multiarch spec for that host
+ "iOS": {
+ "ios-arm64": {
+ "arm64-apple-ios": "arm64-iphoneos",
+ },
+ "ios-arm64_x86_64-simulator": {
+ "arm64-apple-ios-simulator": "arm64-iphonesimulator",
+ "x86_64-apple-ios-simulator": "x86_64-iphonesimulator",
+ },
+ },
+ "tvOS": {
+ "tvos-arm64": {
+ "arm64-apple-tvos": "arm64-appletvos",
+ },
+ "tvos-arm64_x86_64-simulator": {
+ "arm64-apple-tvos-simulator": "arm64-appletvsimulator",
+ "x86_64-apple-tvos-simulator": "x86_64-appletvsimulator",
+ },
+ },
+ "visionOS": {
+ "xros-arm64": {
+ "arm64-apple-xros": "arm64-xros",
+ },
+ "xros-arm64-simulator": {
+ "arm64-apple-xros-simulator": "arm64-xrsimulator",
+ },
+ },
+ "watchOS": {
+ "watchos-arm64_32": {
+ "arm64_32-apple-watchos": "arm64_32-watchos",
+ },
+ "watchos-arm64_x86_64-simulator": {
+ "arm64-apple-watchos-simulator": "arm64-watchsimulator",
+ "x86_64-apple-watchos-simulator": "x86_64-watchsimulator",
+ },
+ },
+}
+
+
+def subdir(name: str, create: bool = False) -> Path:
+ """Ensure that a cross-build directory for the given name exists."""
+ path = CROSS_BUILD_DIR / name
+ if not path.exists():
+ if not create:
+ sys.exit(
+ f"{path} does not exist. Create it by running the appropriate "
+ f"`configure` subcommand of {SCRIPT_NAME}."
+ )
+ else:
+ path.mkdir(parents=True)
+ return path
+
+
+def run(
+ command: ArgsT,
+ *,
+ host: str | None = None,
+ env: EnvironmentT | None = None,
+ log: bool | None = True,
+ **kwargs,
+) -> subprocess.CompletedProcess:
+ """Run a command in an Apple development environment.
+
+ Optionally logs the executed command to the console.
+ """
+ kwargs.setdefault("check", True)
+ if env is None:
+ env = os.environ.copy()
+
+ if host:
+ host_env = apple_env(host)
+ print_env(host_env)
+ env.update(host_env)
+
+ if log:
+ print(">", join_command(command))
+ return subprocess.run(command, env=env, **kwargs)
+
+
+def join_command(args: str | Path | ArgsT) -> str:
+ """Format a command so it can be copied into a shell.
+
+ Similar to `shlex.join`, but also accepts arguments which are Paths, or a
+ single string/Path outside of a list.
+ """
+ if isinstance(args, (str, Path)):
+ return str(args)
+ else:
+ return shlex.join(map(str, args))
+
+
+def print_env(env: EnvironmentT) -> None:
+ """Format the environment so it can be pasted into a shell."""
+ for key, value in sorted(env.items()):
+ print(f"export {key}={shlex.quote(value)}")
+
+
+def platform_for_host(host):
+ """Determine the platform for a given host triple."""
+ for plat, slices in HOSTS.items():
+ for _, candidates in slices.items():
+ for candidate in candidates:
+ if candidate == host:
+ return plat
+ raise KeyError(host)
+
+
+def apple_env(host: str) -> EnvironmentT:
+ """Construct an Apple development environment for the given host."""
+ env = {
+ "PATH": ":".join(
+ [
+ str(PYTHON_DIR / f"Apple/{platform_for_host(host)}/Resources/bin"),
+ str(subdir(host) / "prefix"),
+ "/usr/bin",
+ "/bin",
+ "/usr/sbin",
+ "/sbin",
+ "/Library/Apple/usr/bin",
+ ]
+ ),
+ }
+
+ return env
+
+
+def delete_path(name: str) -> None:
+ """Delete the named cross-build directory, if it exists."""
+ path = CROSS_BUILD_DIR / name
+ if path.exists():
+ print(f"Deleting {path} ...")
+ shutil.rmtree(path)
+
+
+def all_host_triples(platform: str) -> list[str]:
+ """Return all host triples for the given platform.
+
+ The host triples are the platform definitions used as input to configure
+ (e.g., "arm64-apple-ios-simulator").
+ """
+ triples = []
+ for slice_name, slice_parts in HOSTS[platform].items():
+ triples.extend(list(slice_parts))
+ return triples
+
+
+def clean(context: argparse.Namespace, target: str = "all") -> None:
+ """The implementation of the "clean" command."""
+ # If we're explicitly targeting the build, there's no platform or
+ # distribution artefacts. If we're cleaning tests, we keep all built
+ # artefacts. Otherwise, the built artefacts must be dirty, so we remove
+ # them.
+ if target not in {"build", "test"}:
+ paths = ["dist", context.platform] + list(HOSTS[context.platform])
+ else:
+ paths = []
+
+ if target in {"all", "build"}:
+ paths.append("build")
+
+ if target in {"all", "hosts"}:
+ paths.extend(all_host_triples(context.platform))
+ elif target not in {"build", "test", "package"}:
+ paths.append(target)
+
+ if target in {"all", "hosts", "test"}:
+ paths.extend(
+ [
+ path.name
+ for path in CROSS_BUILD_DIR.glob(f"{context.platform}-testbed.*")
+ ]
+ )
+
+ for path in paths:
+ delete_path(path)
+
+
+def build_python_path() -> Path:
+ """The path to the build Python binary."""
+ build_dir = subdir("build")
+ binary = build_dir / "python"
+ if not binary.is_file():
+ binary = binary.with_suffix(".exe")
+ if not binary.is_file():
+ raise FileNotFoundError(f"Unable to find `python(.exe)` in {build_dir}")
+
+ return binary
+
+
+@contextmanager
+def group(text: str):
+ """A context manager that outputs a log marker around a section of a build.
+
+ If running in a GitHub Actions environment, the GitHub syntax for
+ collapsible log sections is used.
+ """
+ if "GITHUB_ACTIONS" in os.environ:
+ print(f"::group::{text}")
+ else:
+ print(f"===== {text} " + "=" * (70 - len(text)))
+
+ yield
+
+ if "GITHUB_ACTIONS" in os.environ:
+ print("::endgroup::")
+ else:
+ print()
+
+
+@contextmanager
+def cwd(subdir: Path):
+ """A context manager that sets the current working directory."""
+ orig = os.getcwd()
+ os.chdir(subdir)
+ yield
+ os.chdir(orig)
+
+
+def configure_build_python(context: argparse.Namespace) -> None:
+ """The implementation of the "configure-build" command."""
+ if context.clean:
+ clean(context, "build")
+
+ with (
+ group("Configuring build Python"),
+ cwd(subdir("build", create=True)),
+ ):
+ command = [relpath(PYTHON_DIR / "configure")]
+ if context.args:
+ command.extend(context.args)
+ run(command)
+
+
+def make_build_python(context: argparse.Namespace) -> None:
+ """The implementation of the "make-build" command."""
+ with (
+ group("Compiling build Python"),
+ cwd(subdir("build")),
+ ):
+ run(["make", "-j", str(os.cpu_count())])
+
+
+def apple_target(host: str) -> str:
+ """Return the Apple platform identifier for a given host triple."""
+ for _, platform_slices in HOSTS.items():
+ for slice_name, slice_parts in platform_slices.items():
+ for host_triple, multiarch in slice_parts.items():
+ if host == host_triple:
+ return ".".join(multiarch.split("-")[::-1])
+
+ raise KeyError(host)
+
+
+def apple_multiarch(host: str) -> str:
+ """Return the multiarch descriptor for a given host triple."""
+ for _, platform_slices in HOSTS.items():
+ for slice_name, slice_parts in platform_slices.items():
+ for host_triple, multiarch in slice_parts.items():
+ if host == host_triple:
+ return multiarch
+
+ raise KeyError(host)
+
+
+def unpack_deps(
+ platform: str,
+ host: str,
+ prefix_dir: Path,
+ cache_dir: Path,
+) -> None:
+ """Unpack binary dependencies into a provided directory.
+
+ Downloads binaries if they aren't already present. Downloads will be stored
+ in provided cache directory.
+
+ On non-macOS platforms, as a safety mechanism, any dynamic libraries will be
+ purged from the unpacked dependencies.
+ """
+ deps_url = "https://github.com/beeware/cpython-apple-source-deps/releases/download"
+ for name_ver in [
+ "BZip2-1.0.8-2",
+ "libFFI-3.4.7-2",
+ "OpenSSL-3.0.17-1",
+ "XZ-5.6.4-2",
+ "mpdecimal-4.0.0-2",
+ "zstd-1.5.7-1",
+ ]:
+ filename = f"{name_ver.lower()}-{apple_target(host)}.tar.gz"
+ archive_path = download(
+ f"{deps_url}/{name_ver}/{filename}",
+ target_dir=cache_dir,
+ )
+ shutil.unpack_archive(archive_path, prefix_dir)
+
+ # Dynamic libraries will be preferentially linked over static; On non-macOS
+ # platforms, ensure that no dylibs are available in the prefix folder.
+ if platform != "macOS":
+ for dylib in prefix_dir.glob("**/*.dylib"):
+ dylib.unlink()
+
+
+def download(url: str, target_dir: Path) -> Path:
+ """Download the specified URL into the given directory.
+
+ :return: The path to the downloaded archive.
+ """
+ target_path = Path(target_dir).resolve()
+ target_path.mkdir(exist_ok=True, parents=True)
+
+ out_path = target_path / basename(url)
+ if not Path(out_path).is_file():
+ run(
+ [
+ "curl",
+ "-Lf",
+ "--retry",
+ "5",
+ "--retry-all-errors",
+ "-o",
+ out_path,
+ url,
+ ]
+ )
+ else:
+ print(f"Using cached version of {basename(url)}")
+ return out_path
+
+
+def configure_host_python(
+ context: argparse.Namespace,
+ host: str | None = None,
+) -> None:
+ """The implementation of the "configure-host" command."""
+ if host is None:
+ host = context.host
+
+ if context.clean:
+ clean(context, host)
+
+ host_dir = subdir(host, create=True)
+ prefix_dir = host_dir / "prefix"
+
+ with group(f"Downloading dependencies ({host})"):
+ if not prefix_dir.exists():
+ prefix_dir.mkdir()
+ unpack_deps(context.platform, host, prefix_dir, context.cache_dir)
+ else:
+ print("Dependencies already installed")
+
+ with (
+ group(f"Configuring host Python ({host})"),
+ cwd(host_dir),
+ ):
+ command = [
+ # Basic cross-compiling configuration
+ relpath(PYTHON_DIR / "configure"),
+ f"--host={host}",
+ f"--build={sysconfig.get_config_var('BUILD_GNU_TYPE')}",
+ f"--with-build-python={build_python_path()}",
+ "--with-system-libmpdec",
+ "--enable-ipv6",
+ "--enable-framework",
+ # Dependent libraries.
+ f"--with-openssl={prefix_dir}",
+ f"LIBLZMA_CFLAGS=-I{prefix_dir}/include",
+ f"LIBLZMA_LIBS=-L{prefix_dir}/lib -llzma",
+ f"LIBFFI_CFLAGS=-I{prefix_dir}/include",
+ f"LIBFFI_LIBS=-L{prefix_dir}/lib -lffi",
+ f"LIBMPDEC_CFLAGS=-I{prefix_dir}/include",
+ f"LIBMPDEC_LIBS=-L{prefix_dir}/lib -lmpdec",
+ f"LIBZSTD_CFLAGS=-I{prefix_dir}/include",
+ f"LIBZSTD_LIBS=-L{prefix_dir}/lib -lzstd",
+ ]
+
+ if context.args:
+ command.extend(context.args)
+ run(command, host=host)
+
+
+def make_host_python(
+ context: argparse.Namespace,
+ host: str | None = None,
+) -> None:
+ """The implementation of the "make-host" command."""
+ if host is None:
+ host = context.host
+
+ with (
+ group(f"Compiling host Python ({host})"),
+ cwd(subdir(host)),
+ ):
+ run(["make", "-j", str(os.cpu_count())], host=host)
+ run(["make", "install"], host=host)
+
+
+def framework_path(host_triple: str, multiarch: str) -> Path:
+ """The path to a built single-architecture framework product.
+
+ :param host_triple: The host triple (e.g., arm64-apple-ios-simulator)
+ :param multiarch: The multiarch identifier (e.g., arm64-simulator)
+ """
+ return (
+ CROSS_BUILD_DIR
+ / f"{host_triple}/Apple/{platform_for_host(host_triple)}/Frameworks/{multiarch}"
+ )
+
+
+def package_version(prefix_path: Path) -> str:
+ """Extract the Python version being built from patchlevel.h."""
+ for path in prefix_path.glob("**/patchlevel.h"):
+ text = path.read_text(encoding="utf-8")
+ if match := re.search(r'\n\s*#define\s+PY_VERSION\s+"(.+)"\s*\n', text):
+ version = match[1]
+ # If not building against a tagged commit, add a timestamp to the
+ # version. Follow the PyPA version number rules, as this will make
+ # it easier to process with other tools. The version will have a
+ # `+` suffix once any official release has been made; a freshly
+ # forked main branch will have a version of 3.X.0a0.
+ if version.endswith("a0"):
+ version += "+"
+ if version.endswith("+"):
+ version += datetime.now(timezone.utc).strftime("%Y%m%d.%H%M%S")
+
+ return version
+
+ sys.exit("Unable to determine Python version being packaged.")
+
+
+def lib_platform_files(dirname, names):
+ """A file filter that ignores platform-specific files in the lib directory."""
+ path = Path(dirname)
+ if (
+ path.parts[-3] == "lib"
+ and path.parts[-2].startswith("python")
+ and path.parts[-1] == "lib-dynload"
+ ):
+ return names
+ elif path.parts[-2] == "lib" and path.parts[-1].startswith("python"):
+ ignored_names = set(
+ name
+ for name in names
+ if (
+ name.startswith("_sysconfigdata_")
+ or name.startswith("_sysconfig_vars_")
+ or name == "build-details.json"
+ )
+ )
+ else:
+ ignored_names = set()
+
+ return ignored_names
+
+
+def lib_non_platform_files(dirname, names):
+ """A file filter that ignores anything *except* platform-specific files
+ in the lib directory.
+ """
+ path = Path(dirname)
+ if path.parts[-2] == "lib" and path.parts[-1].startswith("python"):
+ return set(names) - lib_platform_files(dirname, names) - {"lib-dynload"}
+ else:
+ return set()
+
+
+def create_xcframework(platform: str) -> str:
+ """Build an XCframework from the component parts for the platform.
+
+ :return: The version number of the Python verion that was packaged.
+ """
+ package_path = CROSS_BUILD_DIR / platform
+ try:
+ package_path.mkdir()
+ except FileExistsError:
+ raise RuntimeError(
+ f"{platform} XCframework already exists; do you need to run with --clean?"
+ ) from None
+
+ frameworks = []
+ # Merge Frameworks for each component SDK. If there's only one architecture
+ # for the SDK, we can use the compiled Python.framework as-is. However, if
+ # there's more than architecture, we need to merge the individual built
+ # frameworks into a merged "fat" framework.
+ for slice_name, slice_parts in HOSTS[platform].items():
+ # Some parts are the same across all slices, so we use can any of the
+ # host frameworks as the source for the merged version. Use the first
+ # one on the list, as it's as representative as any other.
+ first_host_triple, first_multiarch = next(iter(slice_parts.items()))
+ first_framework = (
+ framework_path(first_host_triple, first_multiarch) / "Python.framework"
+ )
+
+ if len(slice_parts) == 1:
+ # The first framework is the only framework, so copy it.
+ print(f"Copying framework for {slice_name}...")
+ frameworks.append(first_framework)
+ else:
+ print(f"Merging framework for {slice_name}...")
+ slice_path = CROSS_BUILD_DIR / slice_name
+ slice_framework = slice_path / "Python.framework"
+ slice_framework.mkdir(exist_ok=True, parents=True)
+
+ # Copy the Info.plist
+ shutil.copy(
+ first_framework / "Info.plist",
+ slice_framework / "Info.plist",
+ )
+
+ # Copy the headers
+ shutil.copytree(
+ first_framework / "Headers",
+ slice_framework / "Headers",
+ )
+
+ # Create the "fat" library binary for the slice
+ run(
+ ["lipo", "-create", "-output", slice_framework / "Python"]
+ + [
+ (framework_path(host_triple, multiarch) / "Python.framework/Python")
+ for host_triple, multiarch in slice_parts.items()
+ ]
+ )
+
+ # Add this merged slice to the list to be added to the XCframework
+ frameworks.append(slice_framework)
+
+ print()
+ print("Build XCframework...")
+ cmd = [
+ "xcodebuild",
+ "-create-xcframework",
+ "-output",
+ package_path / "Python.xcframework",
+ ]
+ for framework in frameworks:
+ cmd.extend(["-framework", framework])
+
+ run(cmd)
+
+ # Extract the package version from the merged framework
+ version = package_version(package_path / "Python.xcframework")
+ version_tag = ".".join(version.split(".")[:2])
+
+ # On non-macOS platforms, each framework in XCframework only contains the
+ # headers, libPython, plus an Info.plist. Other resources like the standard
+ # library and binary shims aren't allowed to live in framework; they need
+ # to be copied in separately.
+ print()
+ print("Copy additional resources...")
+ has_common_stdlib = False
+ for slice_name, slice_parts in HOSTS[platform].items():
+ # Some parts are the same across all slices, so we can any of the
+ # host frameworks as the source for the merged version.
+ first_host_triple, first_multiarch = next(iter(slice_parts.items()))
+ first_path = framework_path(first_host_triple, first_multiarch)
+ first_framework = first_path / "Python.framework"
+
+ slice_path = package_path / f"Python.xcframework/{slice_name}"
+ slice_framework = slice_path / "Python.framework"
+
+ # Copy the binary helpers
+ print(f" - {slice_name} binaries")
+ shutil.copytree(first_path / "bin", slice_path / "bin")
+
+ # Copy the include path (this will be a symlink to the framework headers)
+ print(f" - {slice_name} include files")
+ shutil.copytree(
+ first_path / "include",
+ slice_path / "include",
+ symlinks=True,
+ )
+
+ # Copy in the cross-architecture pyconfig.h
+ shutil.copy(
+ PYTHON_DIR / f"Apple/{platform}/Resources/pyconfig.h",
+ slice_framework / "Headers/pyconfig.h",
+ )
+
+ print(f" - {slice_name} architecture-specific files")
+ for host_triple, multiarch in slice_parts.items():
+ print(f" - {multiarch} standard library")
+ arch, _ = multiarch.split("-", 1)
+
+ if not has_common_stdlib:
+ print(" - using this architecture as the common stdlib")
+ shutil.copytree(
+ framework_path(host_triple, multiarch) / "lib",
+ package_path / "Python.xcframework/lib",
+ ignore=lib_platform_files,
+ )
+ has_common_stdlib = True
+
+ shutil.copytree(
+ framework_path(host_triple, multiarch) / "lib",
+ slice_path / f"lib-{arch}",
+ ignore=lib_non_platform_files,
+ )
+
+ # Copy the host's pyconfig.h to an architecture-specific name.
+ arch = multiarch.split("-")[0]
+ host_path = (
+ CROSS_BUILD_DIR
+ / host_triple
+ / f"Apple/{platform}/Frameworks"
+ / multiarch
+ )
+ host_framework = host_path / "Python.framework"
+ shutil.copy(
+ host_framework / "Headers/pyconfig.h",
+ slice_framework / f"Headers/pyconfig-{arch}.h",
+ )
+
+ # Apple identifies certain libraries as "security risks"; if you
+ # statically link those libraries into a Framework, you become
+ # responsible for providing a privacy manifest for that framework.
+ xcprivacy_file = {
+ "OpenSSL": subdir(host_triple) / "prefix/share/OpenSSL.xcprivacy"
+ }
+ print(f" - {multiarch} xcprivacy files")
+ for module, lib in [
+ ("_hashlib", "OpenSSL"),
+ ("_ssl", "OpenSSL"),
+ ]:
+ shutil.copy(
+ xcprivacy_file[lib],
+ slice_path
+ / f"lib-{arch}/python{version_tag}/lib-dynload/{module}.xcprivacy",
+ )
+
+ print(" - build tools")
+ shutil.copytree(
+ PYTHON_DIR / "Apple/testbed/Python.xcframework/build",
+ package_path / "Python.xcframework/build",
+ )
+
+ return version
+
+
+def package(context: argparse.Namespace) -> None:
+ """The implementation of the "package" command."""
+ if context.clean:
+ clean(context, "package")
+
+ with group("Building package"):
+ # Create an XCframework
+ version = create_xcframework(context.platform)
+
+ # watchOS doesn't have a testbed (yet!)
+ if context.platform != "watchOS":
+ # Clone testbed
+ print()
+ run(
+ [
+ sys.executable,
+ "Apple/testbed",
+ "clone",
+ "--platform",
+ context.platform,
+ "--framework",
+ CROSS_BUILD_DIR / context.platform / "Python.xcframework",
+ CROSS_BUILD_DIR / context.platform / "testbed",
+ ]
+ )
+
+ # Build the final archive
+ archive_name = (
+ CROSS_BUILD_DIR
+ / "dist"
+ / f"python-{version}-{context.platform}-XCframework"
+ )
+
+ print()
+ print("Create package archive...")
+ shutil.make_archive(
+ str(CROSS_BUILD_DIR / archive_name),
+ format="gztar",
+ root_dir=CROSS_BUILD_DIR / context.platform,
+ base_dir=".",
+ )
+ print()
+ print(f"{archive_name.relative_to(PYTHON_DIR)}.tar.gz created.")
+
+
+def build(context: argparse.Namespace, host: str | None = None) -> None:
+ """The implementation of the "build" command."""
+ if host is None:
+ host = context.host
+
+ if context.clean:
+ clean(context, host)
+
+ if host in {"all", "build"}:
+ for step in [
+ configure_build_python,
+ make_build_python,
+ ]:
+ step(context)
+
+ if host == "build":
+ hosts = []
+ elif host in {"all", "hosts"}:
+ hosts = all_host_triples(context.platform)
+ else:
+ hosts = [host]
+
+ for step_host in hosts:
+ for step in [
+ configure_host_python,
+ make_host_python,
+ ]:
+ step(context, host=step_host)
+
+ if host in {"all", "hosts"}:
+ package(context)
+
+
+def test(context: argparse.Namespace, host: str | None = None) -> None:
+ """The implementation of the "test" command."""
+ if host is None:
+ host = context.host
+
+ if context.clean:
+ clean(context, "test")
+
+ with group(f"Test {'XCframework' if host in {'all', 'hosts'} else host}"):
+ timestamp = str(time.time_ns())[:-6]
+ testbed_dir = CROSS_BUILD_DIR / f"{context.platform}-testbed.{timestamp}"
+ if host in {"all", "hosts"}:
+ framework_path = CROSS_BUILD_DIR / context.platform / "Python.xcframework"
+ else:
+ build_arch = platform.machine()
+ host_arch = host.split("-")[0]
+
+ if not host.endswith("-simulator"):
+ print("Skipping test suite non-simulator build.")
+ return
+ elif build_arch != host_arch:
+ print(
+ f"Skipping test suite for an {host_arch} build "
+ f"on an {build_arch} machine."
+ )
+ return
+ else:
+ framework_path = (
+ CROSS_BUILD_DIR
+ / host
+ / f"Apple/{context.platform}"
+ / f"Frameworks/{apple_multiarch(host)}"
+ )
+
+ run(
+ [
+ sys.executable,
+ "Apple/testbed",
+ "clone",
+ "--platform",
+ context.platform,
+ "--framework",
+ framework_path,
+ testbed_dir,
+ ]
+ )
+
+ run(
+ [
+ sys.executable,
+ testbed_dir,
+ "run",
+ "--verbose",
+ ]
+ + (["--simulator", str(context.simulator)] if context.simulator else [])
+ + [
+ "--",
+ "test",
+ # "--slow-ci" if context.slow else "--fast-ci",
+ # "--no-randomize",
+ "-uall",
+ "--rerun",
+ "-W",
+ "--single-process",
+ # Timeout handling requires subprocesses; explicitly setting
+ # the timeout to -1 disables the faulthandler.
+ "--timeout=-1",
+ # Adding Python options requires the use of a subprocess to
+ # start a new Python interpreter.
+ "--dont-add-python-opts",
+ ]
+ )
+
+
+def ci(context: argparse.Namespace) -> None:
+ """The implementation of the "ci" command."""
+ clean(context, "all")
+ build(context, host="all")
+ test(context, host="all")
+
+
+def parse_args() -> argparse.Namespace:
+ parser = argparse.ArgumentParser(
+ description=(
+ "A tool for managing the build, package and test process of "
+ "CPython on Apple platforms."
+ ),
+ )
+ parser.suggest_on_error = True
+ subcommands = parser.add_subparsers(dest="subcommand", required=True)
+
+ clean = subcommands.add_parser(
+ "clean",
+ help="Delete all build directories",
+ )
+
+ configure_build = subcommands.add_parser(
+ "configure-build", help="Run `configure` for the build Python"
+ )
+ subcommands.add_parser(
+ "make-build",
+ help="Run `make` for the build Python",
+ )
+ configure_host = subcommands.add_parser(
+ "configure-host",
+ help="Run `configure` for a specific platform and target",
+ )
+ make_host = subcommands.add_parser(
+ "make-host",
+ help="Run `make` for a specific platform and target",
+ )
+ package = subcommands.add_parser(
+ "package",
+ help="Create a release package for the platform",
+ )
+ build = subcommands.add_parser(
+ "build",
+ help="Build all platform targets and create the XCframework",
+ )
+ test = subcommands.add_parser(
+ "test",
+ help="Run the testbed for a specific platform",
+ )
+ ci = subcommands.add_parser(
+ "ci",
+ help="Run build, package, and test",
+ )
+
+ # platform argument
+ for cmd in [clean, configure_host, make_host, package, build, test, ci]:
+ cmd.add_argument(
+ "platform",
+ choices=HOSTS.keys(),
+ help="The target platform to build",
+ )
+
+ # host triple argument
+ for cmd in [configure_host, make_host]:
+ cmd.add_argument(
+ "host",
+ help="The host triple to build (e.g., arm64-apple-ios-simulator)",
+ )
+ # optional host triple argument
+ for cmd in [clean, build, test]:
+ cmd.add_argument(
+ "host",
+ nargs="?",
+ default="all",
+ help=(
+ "The host triple to build (e.g., arm64-apple-ios-simulator), "
+ "or 'build' for just the build platform, or 'hosts' for all "
+ "host platforms, or 'all' for the build platform and all "
+ "hosts. Defaults to 'all'"
+ ),
+ )
+
+ # --clean option
+ for cmd in [configure_build, configure_host, build, package, test, ci]:
+ cmd.add_argument(
+ "--clean",
+ action="store_true",
+ default=False,
+ dest="clean",
+ help="Delete the relevant build directories first",
+ )
+
+ # --cache-dir option
+ for cmd in [configure_host, build, ci]:
+ cmd.add_argument(
+ "--cache-dir",
+ default="./cross-build/downloads",
+ help="The directory to store cached downloads.",
+ )
+
+ # --simulator option
+ for cmd in [test, ci]:
+ cmd.add_argument(
+ "--simulator",
+ help=(
+ "The name of the simulator to use (eg: 'iPhone 16e'). Defaults to "
+ "the most recently released 'entry level' iPhone device. Device "
+ "architecture and OS version can also be specified; e.g., "
+ "`--simulator 'iPhone 16 Pro,arch=arm64,OS=26.0'` would run on "
+ "an ARM64 iPhone 16 Pro simulator running iOS 26.0."
+ ),
+ )
+ cmd.add_argument(
+ "--slow",
+ action="store_true",
+ help="Run tests with --slow-ci options.",
+ )
+
+ for subcommand in [configure_build, configure_host, build, ci]:
+ subcommand.add_argument(
+ "args", nargs="*", help="Extra arguments to pass to `configure`"
+ )
+
+ return parser.parse_args()
+
+
+def print_called_process_error(e: subprocess.CalledProcessError) -> None:
+ for stream_name in ["stdout", "stderr"]:
+ content = getattr(e, stream_name)
+ stream = getattr(sys, stream_name)
+ if content:
+ stream.write(content)
+ if not content.endswith("\n"):
+ stream.write("\n")
+
+ # shlex uses single quotes, so we surround the command with double quotes.
+ print(f'Command "{join_command(e.cmd)}" returned exit status {e.returncode}')
+
+