Thanks for the link - Gleam looks pretty interesting! You’re right though in thinking that the Postgres-driver route is not focused on XTQL (Datalog-style queries) currently - SQL is the priority for the moment, see the response here also Wire protocol for XTQL - #3 by refset
Using v1 over HTTP (for Datalog) might work nicely but you would probably want to write an edn library for Gleam first.