Package camltc

Failed to find a solution:

no platform:
2024-06-03 08:55.37 [INFO] Solving for ocaml-base-compiler, ocaml,
                           camltc using opam_repository_commit 4e03b5779a616b359a49721086d24092d8deef5c

2024-06-03 08:56.59 [INFO] base: eliminated all possibilities in 1.14 s

2024-06-03 08:56.59 [INFO] = base =

2024-06-03 08:56.59 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-nnp.base
          base-threads.base base-unix.base ocaml-config.3
          ocaml-options-vanilla.1 camltc&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler ocaml base-domains
          ocaml-base-compiler
- camltc -> (problem)
    User requested = 0.9.5
    No usable implementations:
      camltc.0.9.8: Rejected by user-specified constraint camltc (= 0.9.5)
      camltc.0.9.7.0: Rejected by user-specified constraint camltc (= 0.9.5)
      camltc.0.9.6: Rejected by user-specified constraint camltc (= 0.9.5)
      camltc.0.9.5: Availability condition not satisfied
      camltc.0.9.4: Rejected by user-specified constraint camltc (= 0.9.5)
      ...
- ocaml -> ocaml.5.1.1
    User requested <= 5.1.1
- ocaml-base-compiler -> ocaml-base-compiler.5.1.1
    User requested >= 4.04.1
    ocaml-base-compiler|ocaml-variants|ocaml-system|dkml-base-compiler ocaml-base-compiler requires >= 5.1.1~ & < 5.1.2~