Derived collections

To support automated QA at the scale of a distribution, some collections are derived automatically from other collections. For example, the collection of Lintian output for a suite would be derived automatically by running a Lintian task on each of the packages in the corresponding debian:suite collection. Such collections have additional information to allow keeping track of what work needs to be done to keep them up to date:

• Per-item data:

  • derived_from: a list of the internal collection item IDs from which this item was derived

Implementations of the UpdateDerivedCollection task use this information to keep such derived collections up to date.