with dune ocaml-lsp-server builds when version of ocaml is 4.12.1. Above that ocaml-lsp-server does not build. [Note : Current ocaml is version 5.0.0]
^Triage: fix Summary and assign. To submitter: I don't know to which port ocaml-lsp-server pertains.
Ports tree includes ocaml 4.12.2 and everything build fine. Since the ports tree does not include ocaml 5 (which is experimental AFAIK), this is not a bug with the ports tree.