def _get_last_installed_version(
name: utils.DatasetName,
) -> Optional[_InstalledPackage]:
"""Checks whether the datasets is installed locally and returns it."""
root_dir = (
cache.module_path() / _IMPORT_MODULE_NAME / name.namespace / name.name
)
if not root_dir.exists(): # Dataset not found
return None
all_installed_package_metadatas = [
package / _METADATA_FILENAME for package in root_dir.iterdir()
]
all_installed_packages = [
_InstalledPackage.from_json(json.loads(metadata.read_text()))
for metadata in all_installed_package_metadatas
if metadata.exists()
]
all_installed_packages = sorted(
all_installed_packages, key=lambda p: p.instalation_date
)
if not all_installed_packages: # No valid package found
return None
else:
return all_installed_packages[-1] # Most recently installed package
def installation_path(self) -> utils.ReadWritePath:
"""Local path of the package."""
name = self.package.name
sub_dir = f'{_IMPORT_MODULE_NAME}/{name.namespace}/{name.name}/{self.hash}'
return cache.module_path() / sub_dir
def test_mock_cache_path(tmp_path: pathlib.Path):
with mock_cache_path(tmp_path):
assert os.fspath(tmp_path) not in sys.path
assert cache.cache_path() == tmp_path
assert cache.module_path() == tmp_path / 'modules'
assert os.fspath(tmp_path / 'modules') in sys.path