Package merlin-lib

Failed to find a solution:

no platform:
2025-05-27 14:30.03 [INFO] Solving for ocaml-base-compiler,
                           merlin-lib, constraints ocaml-base-compiler<=5.3.0,
                           merlin-lib=5.4.2~5.4preview using opam_repository_commit 0513bad99e6bd38bc62f558cbfa34fa046dc887b

2025-05-27 14:30.28 [INFO] base: eliminated all possibilities in 0.56 s

2025-05-27 14:30.28 [INFO] = base =

2025-05-27 14:30.28 [INFO] Can't find all required versions.
Selected: base-threads.base base-unix.base csexp.1.5.2 dune.3.19.0
          ocaml-config.3 ocaml-options-vanilla.1
          merlin-lib&ocaml-base-compiler ocaml-variants ocaml-base-compiler
          ocaml-base-compiler
- merlin-lib -> merlin-lib.5.4.2~5.4preview
    User requested = 5.4.2~5.4preview
- ocaml -> ocaml.5.4.0
    merlin-lib 5.4.2~5.4preview requires >= 5.4 & < 5.5
- ocaml-base-compiler -> ocaml-base-compiler.5.3.0
    User requested <= 5.3.0
- ocaml-compiler -> (problem)
    ocaml-base-compiler 5.3.0 requires = 5.3.0
    Rejected candidates:
      ocaml-compiler.5.5: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.4.0~alpha1: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.4: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.3.0: Requires ocaml = 5.3.0
      ocaml-compiler.5.3.0~rc1: Incompatible with restriction: = 5.3.0
      ...
- ocaml-variants -> (problem)
    Rejected candidates:
      ocaml-variants.5.5.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0~alpha1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.1+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ...