Daml on sql 2.1.1

[Stephen]

The old daml-on-sql has been removed from Daml 2. Please see this prior thread for discussion of recommended setup for SQL-backed Daml 2 ledgers:

What became of `daml-on-sql.jar` in 2.x.x?

To run Daml apps built with the SDK 1.x.x with database backing, there used to be a ledger implementation daml-on-sql.jar (cf. e.g., Release 1.18.0 · digital-asset/daml · GitHub) This doesn’t exist in the 2.x.x releases anymore (cf. e.g. Release 2.1.0 · digital-asset/daml · GitHub). What would I use instead to run a Daml 2.x app in a ledger with database backing?