I’m pretty sure it is a datomic on-prem only product because it uses the peer api

Ie it won’t work with dev-local at all

You should be able to use REBL to browse the dev-local database

@U033YE56GCV I think you're missing the tools.deps alias for dev-local when you run REBL. You will probably have a newer version of REBL and dev-local in your deps.edn but it shouldn't matter. This screenshot shows a minimal deps.edn and a terminal running clojure -M:rebl-main:rebl:dev-local, no Calva or Emacs based REPL (They are supported, I just wanted to show a minimal configuration)

Maybe it seems related to my weird setup. I have the ~/.clojure/deps.edn configured to share aliases across all projects, but my project is using lein with a project.clj. Is it possible to make both run together? Otherwise I will convert the project.clj to deps.edn.

If it’s a new project, just using deps.edn is probably the most simple thing to do.