def get_package_paths(cls, sitedir,
name): # type: (Path, str) -> Set[Path]
"""
Process a .pth file within the site-packages directory, and return any valid
paths. We skip executable .pth files as there is no reliable means to do this
without side-effects to current run-time. Mo check is made that the item refers
to a directory rather than a file, however, in order to maintain backwards
compatibility, we allow non-existing paths to be discovered. The latter
behaviour is different to how Python's site-specific hook configuration works.
Reference: https://docs.python.org/3.8/library/site.html
:param sitedir: The site-packages directory to search for .pth file.
:param name: The name of the package to search .pth file for.
:return: A `Set` of valid `Path` objects.
"""
paths = set()
pth_file = sitedir.joinpath("{}.pth".format(name))
if pth_file.exists():
with pth_file.open() as f:
for line in f:
line = line.strip()
if line and not line.startswith(
("#", "import ", "import\t")):
path = Path(line)
if not path.is_absolute():
path = sitedir.joinpath(path)
paths.add(path)
return paths
def get_package_paths(cls, env, name): # type: (Env, str) -> Set[Path]
"""
Process a .pth file within the site-packages directories, and return any valid
paths. We skip executable .pth files as there is no reliable means to do this
without side-effects to current run-time. Mo check is made that the item refers
to a directory rather than a file, however, in order to maintain backwards
compatibility, we allow non-existing paths to be discovered. The latter
behaviour is different to how Python's site-specific hook configuration works.
Reference: https://docs.python.org/3.8/library/site.html
:param env: The environment to search for the .pth file in.
:param name: The name of the package to search .pth file for.
:return: A `Set` of valid `Path` objects.
"""
paths = set()
# we identify the candidate pth files to check, this is done so to handle cases
# where the pth file for foo-bar might have been installed as either foo-bar.pth or
# foo_bar.pth (expected) in either pure or platform lib directories.
candidates = itertools.product(
{env.purelib, env.platlib},
{name, module_name(name)},
)
for lib, module in candidates:
pth_file = lib.joinpath(module).with_suffix(".pth")
if not pth_file.exists():
continue
with pth_file.open() as f:
for line in f:
line = line.strip()
if line and not line.startswith(
("#", "import ", "import\t")):
path = Path(line)
if not path.is_absolute():
try:
path = lib.joinpath(path).resolve()
except FileNotFoundError:
# this is required to handle pathlib oddity on win32 python==3.5
path = lib.joinpath(path)
paths.add(path)
return paths
