Nate Lust reports that trying to build a single QuantumGraph for all of the PipelineTasks in ci_hsc runs into SQLite's hard-coded maximum of 64 joins a single query.  I can think of several ways to avoid this, many involving temporary tables (I know those work differently in Oracle; I think my ideas are compatible with that).

For the demo we'll plan on just running the pipelines in three stages, for which QuantumGraph generation works fine.  If everything else is going extremely well early in the week I may take a stab at resolving this, too.