[bug#27876] [PATCH v2 1/3] cuirass: Store new information in database to prepare new HTTP API integration.

[Mathieu Othacehe]

> With an autoincremented index, I suppose we might want to make sure that
> ‘db-add-build’ does not add a new entry for a build that’s already in
> the table.  WDYT?

Yes we might, but looking for a build with the same
derivation-evaluation-outputs before each build insertion will be an
expensive operation (now that this tuple is no longer the primary key).

Mathieu