Switching to a pure Tokio-supported stack is prohibitive (as the old tokio based MSSQL lib https://github.com/steffengy/tiberius is no longer supported).
Is there a general guidance resource for using both async-std and tokio runtimes together anywhere?
You're welcome. Note that the Cargo.toml for prisma tiberius contains both async-std and Tokio as optional dependencies, so I suspect that only tide is forcing you to use async-std.