Package sexplib

Failed to find a solution:

no platform:
2024-05-29 15:03.05 [INFO] Solving for ocaml-base-compiler, ocaml,
                           sexplib using opam_repository_commit 7311123dcaba6b163a96ad2219b8cc4e59df93a3

2024-05-29 15:03.11 [INFO] base: eliminated all possibilities in 2.72 s

2024-05-29 15:03.11 [INFO] = base =

2024-05-29 15:03.11 [INFO] Can't find all required versions.
Selected: base-ocamlbuild.base js-build-tools.113.33.04 ocaml-config.3
          ocamlbuild.0 ocamlfind.1.9.6 sexplib&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler
- ocaml -> ocaml.4.02.3
    User requested <= 5.1.1
    base-ocamlbuild base requires >= 3.10 & < 4.03
    sexplib 113.33.03 requires = 4.02.3
- ocaml-base-compiler -> (problem)
    User requested >= 4.04.1
    Rejected candidates:
      ocaml-base-compiler.5.2.0: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~rc1: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~beta2: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~beta1: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~alpha1: Requires ocaml = 5.2.0
      ...
- sexplib -> sexplib.113.33.03
    User requested = 113.33.03