Package melange

Failed to find a solution:

no platform:
2024-02-26 22:31.09 [INFO] Solving for ocaml-base-compiler, ocaml,
                           melange using opam_repository_commit 9a5e86cfbb60b6419e192f1bcb66f716fa9d2799

2024-02-26 22:33.40 [INFO] base: eliminated all possibilities in 1.20 s

2024-02-26 22:33.40 [INFO] = base =

2024-02-26 22:33.40 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-nnp.base
          base-threads.base base-unix.base cmdliner.1.2.0 cppo.1.6.9
          dune.3.14.0 dune-build-info.3.14.0 menhir.20231231
          menhirCST.20231231 menhirLib.20231231 menhirSdk.20231231
          ocaml-compiler-libs.v0.17.0 ocaml-options-vanilla.1
          ppx_derivers.1.2.1 ppxlib.0.32.1~5.2preview sexplib0.v0.16.0
          stdlib-shims.0.3.0 melange&ocaml&ocaml-base-compiler ocaml ocaml
          base-domains ocaml-base-compiler
- melange -> melange.2.2.0
    User requested = 2.2.0
- ocaml -> (problem)
    User requested <= 5.1.0
    cmdliner 1.2.0 requires >= 4.08.0
    melange 2.2.0 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.5.2.0~alpha1
    User requested >= 4.04.1