Package merlin-lib

Failed to find a solution:

no platform:
2024-01-29 14:45.00 [INFO] Solving for ocaml-base-compiler, ocaml,
                           merlin-lib using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 14:45.05 [INFO] base: eliminated all possibilities in 2.20 s

2024-01-29 14:45.05 [INFO] = base =

2024-01-29 14:45.05 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-nnp.base
          base-threads.base base-unix.base csexp.1.5.2 dune.3.13.0
          ocaml-options-vanilla.1 merlin-lib&ocaml&ocaml-base-compiler ocaml
          base-domains ocaml ocaml-base-compiler
- merlin-lib -> merlin-lib.4.13.1-501
    User requested = 4.13.1-501
- ocaml -> (problem)
    User requested <= 5.1.0
    csexp 1.5.2 requires >= 4.03.0
    merlin-lib 4.13.1-501 requires >= 5.1.1 & < 5.2
    Rejected candidates:
      ocaml.5.1.0: Incompatible with restriction: >= 5.1.1 & < 5.2
      ocaml.5.0.1: Incompatible with restriction: >= 5.1.1 & < 5.2
      ocaml.5.0.0: Incompatible with restriction: >= 5.1.1 & < 5.2
      ocaml.4.14.2: Incompatible with restriction: >= 5.1.1 & < 5.2
      ocaml.4.14.1: Incompatible with restriction: >= 5.1.1 & < 5.2
      ...
- ocaml-base-compiler -> ocaml-base-compiler.5.1.1
    User requested >= 4.04.1