def _check_installable(self) -> None:
if not (self.path.joinpath("setup.py").exists()
or self.path.joinpath("pyproject.toml").exists()):
raise RequirementError(
f"The local path '{self.path}' is not installable.")
result = SetupReader.read_from_directory(
self.path.absolute().as_posix())
self.name = result["name"]
def get_metadata(self,
allow_all_wheels: bool = True,
raising: bool = False) -> Optional[Metadata]:
"""Get the metadata of the candidate.
For editable requirements, egg info are produced, otherwise a wheel is built.
If raising is True, error will pop when the package fails to build.
"""
if self.metadata is not None:
return self.metadata
ireq = self.ireq
if self.link and not ireq.link:
ireq.link = self.link
try:
built = self.environment.build(ireq, self.hashes, allow_all_wheels)
except BuildError:
if raising:
raise
termui.logger.warn(
"Failed to build package, try parsing project files.")
meta_dict = SetupReader.read_from_directory(
ireq.unpacked_source_directory)
meta_dict.update(summary="UNKNOWN")
meta_dict["requires_python"] = meta_dict.pop(
"python_requires", None)
self.metadata = Namespace(**meta_dict)
else:
if self.req.editable:
if not self.req.is_local_dir and not self.req.is_vcs:
raise RequirementError(
"Editable installation is only supported for "
"local directory and VCS location.")
sdist = get_sdist(built)
self.metadata = sdist.metadata if sdist else None
else:
# It should be a wheel path.
self.wheel = Wheel(built)
self.metadata = self.wheel.metadata
if not self.name:
self.name = self.metadata.name
self.req.name = self.name
if not self.version:
self.version = self.metadata.version
self.link = ireq.link
return self.metadata