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 __init__(
self,
name, # type: str
path, # type: Path
category="main", # type: str
optional=False, # type: bool
base=None, # type: Path
extras=None, # type: Union[List[str], FrozenSet[str]]
):
self._path = path
self._base = base or Path.cwd()
self._full_path = path
if not self._path.is_absolute():
try:
self._full_path = self._base.joinpath(self._path).resolve()
except FileNotFoundError:
raise ValueError("Directory {} does not exist".format(self._path))
if not self._full_path.exists():
raise ValueError("File {} does not exist".format(self._path))
if self._full_path.is_dir():
raise ValueError("{} is a directory, expected a file".format(self._path))
super(FileDependency, self).__init__(
name,
"*",
category=category,
optional=optional,
allows_prereleases=True,
source_type="file",
source_url=self._full_path.as_posix(),
extras=extras,
)
def executable():
global _executable
if _executable is not None:
return _executable
if WINDOWS and PY36:
# Finding git via where.exe
where = "%WINDIR%\\System32\\where.exe"
paths = decode(
subprocess.check_output([where, "git"], shell=True,
encoding="oem")).split("\n")
for path in paths:
if not path:
continue
path = Path(path.strip())
try:
path.relative_to(Path.cwd())
except ValueError:
_executable = str(path)
break
else:
_executable = "git"
if _executable is None:
raise RuntimeError("Unable to find a valid git executable")
return _executable
def __init__(
self,
name, # type: str
path, # type: Path
category="main", # type: str
optional=False, # type: bool
base=None, # type: Path
develop=False, # type: bool
extras=None, # type: Union[List[str], FrozenSet[str]]
):
self._path = path
self._base = base or Path.cwd()
self._full_path = path
if not self._path.is_absolute():
try:
self._full_path = self._base.joinpath(self._path).resolve()
except FileNotFoundError:
raise ValueError("Directory {} does not exist".format(self._path))
self._develop = develop
self._supports_poetry = False
if not self._full_path.exists():
raise ValueError("Directory {} does not exist".format(self._path))
if self._full_path.is_file():
raise ValueError("{} is a file, expected a directory".format(self._path))
# Checking content to determine actions
setup = self._full_path / "setup.py"
self._supports_poetry = PyProjectTOML(
self._full_path / "pyproject.toml"
).is_poetry_project()
if not setup.exists() and not self._supports_poetry:
raise ValueError(
"Directory {} does not seem to be a Python package".format(
self._full_path
)
)
super(DirectoryDependency, self).__init__(
name,
"*",
category=category,
optional=optional,
allows_prereleases=True,
source_type="directory",
source_url=self._full_path.as_posix(),
extras=extras,
)
def get_vcs(directory): # type: (Path) -> Git
working_dir = Path.cwd()
os.chdir(str(directory.resolve()))
try:
git_dir = decode(
subprocess.check_output(["git", "rev-parse", "--show-toplevel"],
stderr=subprocess.STDOUT)).strip()
vcs = Git(Path(git_dir))
except (subprocess.CalledProcessError, OSError):
vcs = None
finally:
os.chdir(str(working_dir))
return vcs
def checkout_output(cmd, *args, **kwargs):
if Path(cmd[0]).name == "where.exe":
return "\n".join(
[str(Path.cwd().joinpath("git.exe")), "C:\\Git\\cmd\\git.exe"])
return b""