ocaml-base-compiler 4.10.0

Error log

The package failed to build. The error log from opam follows.

[NOTE] Package dune is already installed (current version is 2.7.1).
[NOTE] Package ocamlfind is already installed (current version is 1.9.6).
[ERROR] Package conflict!
  * No agreement on the version of ocaml:
    - (invariant) -> ocaml-base-compiler = 4.10.2 -> ocaml = 4.10.2
    - merlin = 3.3.4~4.10preview1 -> ocaml = 4.10.0
    You can temporarily relax the switch invariant with `--update-invariant'

No solution found, exiting