FYI dbt-fusion [1] is going GA next week (though GA for Databricks will come later) Most of it is source-available and ELv2-licensed, but there's a number of crates that are Apache 2.0, namely: dbt-xdbc, dbt-adapter, dbt-auth, dbt-jinja, dbt-agate. We also have plans to OSS more as time goes on (stay tuned).
I just wanted to call out the OSS crates in case you'd rather focus on "making your beer taste better" than have to re-build foundations. I'd love to hear if any of those crates come in handy for you (even more so if they don't work for you).
Feel free to reach out on LinkedIn or dbt community Slack if you ever want to chat more!