def _pep517_metadata(cls, path): # type (Path) -> PackageInfo
"""
Helper method to use PEP-517 library to build and read package metadata.
:param path: Path to package source to build and read metadata for.
"""
info = None
try:
info = cls.from_setup_files(path)
if info.requires_dist is not None:
return info
except PackageInfoError:
pass
with temporary_directory() as tmp_dir:
# TODO: cache PEP 517 build environment corresponding to each project venv
venv_dir = Path(tmp_dir) / ".venv"
EnvManager.build_venv(venv_dir.as_posix())
venv = VirtualEnv(venv_dir, venv_dir)
dest_dir = Path(tmp_dir) / "dist"
dest_dir.mkdir()
try:
venv.run("python", "-m", "pip", "install",
"--disable-pip-version-check", "--ignore-installed",
*PEP517_META_BUILD_DEPS)
venv.run(
"python",
"-",
input_=PEP517_META_BUILD.format(source=path.as_posix(),
dest=dest_dir.as_posix()),
)
return cls.from_metadata(dest_dir)
except EnvCommandError as e:
# something went wrong while attempting pep517 metadata build
# fallback to egg_info if setup.py available
cls._log("PEP517 build failed: {}".format(e), level="debug")
setup_py = path / "setup.py"
if not setup_py.exists():
raise PackageInfoError(path)
cwd = Path.cwd()
os.chdir(path.as_posix())
try:
venv.run("python", "setup.py", "egg_info")
return cls.from_metadata(path)
except EnvCommandError:
raise PackageInfoError(path)
finally:
os.chdir(cwd.as_posix())
if info:
cls._log(
"Falling back to parsed setup.py file for {}".format(path),
"debug")
return info
# if we reach here, everything has failed and all hope is lost
raise PackageInfoError(path)
def prepare_metadata_for_build_wheel(metadata_directory, config_settings=None):
poetry = Factory().create_poetry(Path(".").resolve())
builder = WheelBuilder(poetry)
dist_info = Path(metadata_directory, builder.dist_info)
dist_info.mkdir(parents=True, exist_ok=True)
if "scripts" in poetry.local_config or "plugins" in poetry.local_config:
with (dist_info / "entry_points.txt").open("w", encoding="utf-8") as f:
builder._write_entry_points(f)
with (dist_info / "WHEEL").open("w", encoding="utf-8") as f:
builder._write_wheel_file(f)
with (dist_info / "METADATA").open("w", encoding="utf-8") as f:
builder._write_metadata_file(f)
return dist_info.name
