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windows.py
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windows.py
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import os
import shutil
import subprocess
import sys
import tempfile
from pathlib import Path
from typing import Dict, List, NamedTuple, Optional, Sequence, Set
from zipfile import ZipFile
from packaging.version import Version
from .architecture import Architecture
from .environment import ParsedEnvironment
from .logger import log
from .options import Options
from .typing import PathOrStr, assert_never
from .util import (
BuildFrontend,
BuildSelector,
NonPlatformWheelError,
download,
get_build_verbosity_extra_flags,
get_pip_version,
prepare_command,
read_python_configs,
)
CIBW_INSTALL_PATH = Path("C:\\cibw")
def call(
args: Sequence[PathOrStr], env: Optional[Dict[str, str]] = None, cwd: Optional[PathOrStr] = None
) -> None:
print("+ " + " ".join(str(a) for a in args))
# we use shell=True here, even though we don't need a shell due to a bug
# https://bugs.python.org/issue8557
subprocess.run([str(a) for a in args], env=env, cwd=cwd, shell=True, check=True)
def shell(
command: str, env: Optional[Dict[str, str]] = None, cwd: Optional[PathOrStr] = None
) -> None:
print(f"+ {command}")
subprocess.run(command, env=env, cwd=cwd, shell=True, check=True)
def get_nuget_args(version: str, arch: str) -> List[str]:
platform_suffix = {"32": "x86", "64": "", "ARM64": "arm64"}
python_name = "python" + platform_suffix[arch]
return [
python_name,
"-Version",
version,
"-FallbackSource",
"https://api.nuget.org/v3/index.json",
"-OutputDirectory",
str(CIBW_INSTALL_PATH / "python"),
]
class PythonConfiguration(NamedTuple):
version: str
arch: str
identifier: str
url: Optional[str] = None
def get_python_configurations(
build_selector: BuildSelector,
architectures: Set[Architecture],
) -> List[PythonConfiguration]:
full_python_configs = read_python_configs("windows")
python_configurations = [PythonConfiguration(**item) for item in full_python_configs]
map_arch = {"32": Architecture.x86, "64": Architecture.AMD64, "ARM64": Architecture.ARM64}
# skip builds as required
python_configurations = [
c
for c in python_configurations
if build_selector(c.identifier) and map_arch[c.arch] in architectures
]
return python_configurations
def extract_zip(zip_src: Path, dest: Path) -> None:
with ZipFile(zip_src) as zip:
zip.extractall(dest)
def install_cpython(version: str, arch: str, nuget: Path) -> Path:
nuget_args = get_nuget_args(version, arch)
installation_path = Path(nuget_args[-1]) / (nuget_args[0] + "." + version) / "tools"
call([nuget, "install", *nuget_args])
# "python3" is not included in the vanilla nuget package,
# though it can be present if modified (like on Azure).
if not (installation_path / "python3.exe").exists():
(installation_path / "python3.exe").symlink_to(installation_path / "python.exe")
return installation_path
def install_pypy(version: str, arch: str, url: str) -> Path:
assert arch == "64" and "win64" in url
# Inside the PyPy zip file is a directory with the same name
zip_filename = url.rsplit("/", 1)[-1]
extension = ".zip"
assert zip_filename.endswith(extension)
installation_path = CIBW_INSTALL_PATH / zip_filename[: -len(extension)]
if not installation_path.exists():
pypy_zip = CIBW_INSTALL_PATH / zip_filename
download(url, pypy_zip)
# Extract to the parent directory because the zip file still contains a directory
extract_zip(pypy_zip, installation_path.parent)
return installation_path
def setup_python(
python_configuration: PythonConfiguration,
dependency_constraint_flags: Sequence[PathOrStr],
environment: ParsedEnvironment,
build_frontend: BuildFrontend,
) -> Dict[str, str]:
nuget = CIBW_INSTALL_PATH / "nuget.exe"
if not nuget.exists():
log.step("Downloading nuget...")
download("https://dist.nuget.org/win-x86-commandline/latest/nuget.exe", nuget)
implementation_id = python_configuration.identifier.split("-")[0]
log.step(f"Installing Python {implementation_id}...")
if implementation_id.startswith("cp"):
installation_path = install_cpython(
python_configuration.version, python_configuration.arch, nuget
)
elif implementation_id.startswith("pp"):
assert python_configuration.url is not None
installation_path = install_pypy(
python_configuration.version, python_configuration.arch, python_configuration.url
)
else:
raise ValueError("Unknown Python implementation")
assert (installation_path / "python.exe").exists()
log.step("Setting up build environment...")
# set up PATH and environment variables for run_with_env
env = os.environ.copy()
env["PYTHON_VERSION"] = python_configuration.version
env["PYTHON_ARCH"] = python_configuration.arch
env["PATH"] = os.pathsep.join(
[str(installation_path), str(installation_path / "Scripts"), env["PATH"]]
)
env["PIP_DISABLE_PIP_VERSION_CHECK"] = "1"
log.step("Installing build tools...")
# Install pip
requires_reinstall = not (installation_path / "Scripts" / "pip.exe").exists()
if requires_reinstall:
# maybe pip isn't installed at all. ensurepip resolves that.
call(["python", "-m", "ensurepip"], env=env, cwd=CIBW_INSTALL_PATH)
# pip older than 21.3 builds executables such as pip.exe for x64 platform.
# The first re-install of pip updates pip module but builds pip.exe using
# the old pip which still generates x64 executable. But the second
# re-install uses updated pip and correctly builds pip.exe for the target.
# This can be removed once ARM64 Pythons (currently 3.9 and 3.10) bundle
# pip versions newer than 21.3.
if python_configuration.arch == "ARM64" and Version(get_pip_version(env)) < Version("21.3"):
call(
[
"python",
"-m",
"pip",
"install",
"--force-reinstall",
"--upgrade",
"pip",
*dependency_constraint_flags,
],
env=env,
cwd=CIBW_INSTALL_PATH,
)
# upgrade pip to the version matching our constraints
# if necessary, reinstall it to ensure that it's available on PATH as 'pip.exe'
call(
[
"python",
"-m",
"pip",
"install",
"--force-reinstall" if requires_reinstall else "--upgrade",
"pip",
*dependency_constraint_flags,
],
env=env,
cwd=CIBW_INSTALL_PATH,
)
# update env with results from CIBW_ENVIRONMENT
env = environment.as_dictionary(prev_environment=env)
# check what Python version we're on
call(["where", "python"], env=env)
call(["python", "--version"], env=env)
call(["python", "-c", "\"import struct; print(struct.calcsize('P') * 8)\""], env=env)
where_python = (
subprocess.run(
["where", "python"],
env=env,
universal_newlines=True,
check=True,
stdout=subprocess.PIPE,
)
.stdout.splitlines()[0]
.strip()
)
if where_python != str(installation_path / "python.exe"):
print(
"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.",
file=sys.stderr,
)
sys.exit(1)
# check what pip version we're on
assert (installation_path / "Scripts" / "pip.exe").exists()
where_pip = (
subprocess.run(
["where", "pip"], env=env, universal_newlines=True, check=True, stdout=subprocess.PIPE
)
.stdout.splitlines()[0]
.strip()
)
if where_pip.strip() != str(installation_path / "Scripts" / "pip.exe"):
print(
"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.",
file=sys.stderr,
)
sys.exit(1)
call(["pip", "--version"], env=env)
if build_frontend == "pip":
call(
[
"pip",
"install",
"--upgrade",
"setuptools",
"wheel",
*dependency_constraint_flags,
],
env=env,
)
elif build_frontend == "build":
call(
["pip", "install", "--upgrade", "build[virtualenv]", *dependency_constraint_flags],
env=env,
)
else:
assert_never(build_frontend)
return env
def build(options: Options) -> None:
temp_dir = Path(tempfile.mkdtemp(prefix="cibuildwheel"))
built_wheel_dir = temp_dir / "built_wheel"
repaired_wheel_dir = temp_dir / "repaired_wheel"
python_configurations = get_python_configurations(
options.globals.build_selector, options.globals.architectures
)
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)
before_all_prepared = prepare_command(
before_all_options.before_all, project=".", package=options.globals.package_dir
)
shell(before_all_prepared, env=env)
for config in python_configurations:
build_options = options.build_options(config.identifier)
log.build_start(config.identifier)
dependency_constraint_flags: Sequence[PathOrStr] = []
if build_options.dependency_constraints:
dependency_constraint_flags = [
"-c",
build_options.dependency_constraints.get_for_python_version(config.version),
]
# install Python
env = setup_python(
config,
dependency_constraint_flags,
build_options.environment,
build_options.build_frontend,
)
# run the before_build command
if build_options.before_build:
log.step("Running before_build...")
before_build_prepared = prepare_command(
build_options.before_build, project=".", package=options.globals.package_dir
)
shell(before_build_prepared, env=env)
log.step("Building wheel...")
if built_wheel_dir.exists():
shutil.rmtree(built_wheel_dir)
built_wheel_dir.mkdir(parents=True)
verbosity_flags = get_build_verbosity_extra_flags(build_options.build_verbosity)
if build_options.build_frontend == "pip":
# 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",
options.globals.package_dir.resolve(),
f"--wheel-dir={built_wheel_dir}",
"--no-deps",
*get_build_verbosity_extra_flags(build_options.build_verbosity),
],
env=env,
)
elif build_options.build_frontend == "build":
config_setting = " ".join(verbosity_flags)
build_env = env.copy()
if build_options.dependency_constraints:
constraints_path = build_options.dependency_constraints.get_for_python_version(
config.version
)
# Bug in pip <= 21.1.3 - we can't have a space in the
# constraints file, and pip doesn't support drive letters
# in uhi. After probably pip 21.2, we can use uri. For
# now, use a temporary file.
if " " in str(constraints_path):
tmp_file = tempfile.NamedTemporaryFile(
"w", suffix="constraints.txt", delete=False, dir=CIBW_INSTALL_PATH
)
with tmp_file as new_constraints_file, open(constraints_path) as f:
new_constraints_file.write(f.read())
constraints_path = Path(new_constraints_file.name)
build_env["PIP_CONSTRAINT"] = str(constraints_path)
build_env["VIRTUALENV_PIP"] = get_pip_version(env)
call(
[
"python",
"-m",
"build",
build_options.package_dir,
"--wheel",
f"--outdir={built_wheel_dir}",
f"--config-setting={config_setting}",
],
env=build_env,
)
else:
assert_never(build_options.build_frontend)
built_wheel = next(built_wheel_dir.glob("*.whl"))
# repair the wheel
if repaired_wheel_dir.exists():
shutil.rmtree(repaired_wheel_dir)
repaired_wheel_dir.mkdir(parents=True)
if built_wheel.name.endswith("none-any.whl"):
raise NonPlatformWheelError()
if build_options.repair_command:
log.step("Repairing wheel...")
repair_command_prepared = prepare_command(
build_options.repair_command, wheel=built_wheel, dest_dir=repaired_wheel_dir
)
shell(repair_command_prepared, env=env)
else:
shutil.move(str(built_wheel), repaired_wheel_dir)
repaired_wheel = next(repaired_wheel_dir.glob("*.whl"))
if build_options.test_command and options.globals.test_selector(config.identifier):
log.step("Testing wheel...")
# set up a virtual environment to install and test from, to make sure
# there are no dependencies that were pulled in at build time.
call(["pip", "install", "virtualenv", *dependency_constraint_flags], env=env)
venv_dir = Path(tempfile.mkdtemp())
# Use --no-download to ensure determinism by using seed libraries
# built into virtualenv
call(["python", "-m", "virtualenv", "--no-download", venv_dir], env=env)
virtualenv_env = env.copy()
virtualenv_env["PATH"] = os.pathsep.join(
[
str(venv_dir / "Scripts"),
virtualenv_env["PATH"],
]
)
# check that we are using the Python from the virtual environment
call(["where", "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(before_test_prepared, env=virtualenv_env)
# install the wheel
call(
["pip", "install", str(repaired_wheel) + build_options.test_extras],
env=virtualenv_env,
)
# test the wheel
if build_options.test_requires:
call(["pip", "install"] + build_options.test_requires, env=virtualenv_env)
# run the tests from c:\, 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=options.globals.package_dir.resolve(),
)
shell(test_command_prepared, cwd="c:\\", env=virtualenv_env)
# clean up
# (we ignore errors because occasionally Windows fails to unlink a file and we
# don't want to abort a build because of that)
shutil.rmtree(venv_dir, ignore_errors=True)
# we're all done here; move it to output (remove if already exists)
shutil.move(str(repaired_wheel), build_options.output_dir)
log.build_end()
except subprocess.CalledProcessError as error:
log.step_end_with_error(
f"Command {error.cmd} failed with code {error.returncode}. {error.stdout}"
)
sys.exit(1)