ap_verify currently ingests three kinds of data: raws, calibs, and defects. This works well for DECam, but HSC also has transmission curve datasets (optics, filter, and sensor). The only way to ingest them in Gen 2 appears to be to call a command-line script, installTransmissionCurves.py. It's not obvious how to incorporate this into DatasetIngestTask, given that it's supposed to be instrument-agnostic.
Find a way to handle transmission curves effectively in Gen 2 without breaking support for other instruments like DECam.
(Transmission curves will not be an issue in Gen 3 if we provide all calibs through a pre-ingested repository, and if not, we can use the obs.base.Instrument.writeCuratedCalibrations method to ingest them generically.)