unfortunately I'm not sure whether this is a "dune" or a "merlin" issue. My setup is OCaml 4.12.0 with emacs, and merlin 4.1-412 / dune 2.8.2. In the *Messages* buffer I see lots of messages: Path is not in dune workspace /home/hannes/mirage/mirage-crypto/tests.

And in the source code, merlin does not work at all. It is not clear to me how to debug this issue further, any hints on how to inspect what this "dune workspace path" is?

Thanks.