They should use ExtId instead.
(They already write the metadata that needs to be archived to raw_extrinsic_metadata)
- T3141 Make loaders pass ExtId objects between functions instead of "known_artifact"
- T3142 Make loaders write to the ExtId storage
- T3143 Migrate revision metadata to extid in the storage
- T3140 Make loaders use ExtId to find what arteficts are already loaded, in addition to revision.metadata
- T3139 Make loaders stop reading from the 'metadata' column of the 'revision' table
- T3138 Make loaders stop writing in the 'metadata' column of the 'revision' table