Package ocaml-src

Failed to find a solution:

no platform:
2024-01-29 14:52.31 [INFO] Solving for ocaml-base-compiler, ocaml,
                           ocaml-src using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 14:52.37 [INFO] base: eliminated all possibilities in 2.71 s

2024-01-29 14:52.37 [INFO] = base =

2024-01-29 14:52.37 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-nnp.base
          base-threads.base base-unix.base ocaml-options-vanilla.1
          ocaml-src&ocaml&ocaml-base-compiler ocaml base-domains
          ocaml-base-compiler
- ocaml -> (problem)
    User requested <= 5.1.0
    ocaml-base-compiler 5.1.1 requires = 5.1.1
    Rejected candidates:
      ocaml.5.1.0: Incompatible with restriction: = 5.1.1
      ocaml.5.0.1: Incompatible with restriction: = 5.1.1
      ocaml.5.0.0: Incompatible with restriction: = 5.1.1
      ocaml.4.14.2: Incompatible with restriction: = 5.1.1
      ocaml.4.14.1: Incompatible with restriction: = 5.1.1
      ...
- ocaml-base-compiler -> ocaml-base-compiler.5.1.1
    User requested >= 4.04.1
- ocaml-src -> ocaml-src.5.1.1
    User requested = 5.1.1