BaseLoader: Add hook to call metadata fetchers before loading an origin (!286) · Merge requests · Platform / Development / swh-loader-core

This uses setuptools entrypoints to allow metadata fetchers to make themselves discoverable without explicitly depending on them.

This commit also lifts the generic metadata loading from the base PackageLoader to BaseLoader

Migrated from D7632 (view on Phabricator)

BaseLoader: Add hook to call metadata fetchers before loading an origin