Package cstruct

Failed to find a solution:

no platform:
2024-01-29 14:45.50 [INFO] Solving for ocaml-base-compiler, ocaml,
                           cstruct using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 14:45.56 [INFO] base: eliminated all possibilities in 2.55 s

2024-01-29 14:45.56 [INFO] = base =

2024-01-29 14:45.56 [INFO] Can't find all required versions.
Selected: base-bytes.base base-threads.base base-unix.base camlp4.4.05+system
          cppo.1.6.9 dune.3.13.0 ocaml-config.3
          ocaml-secondary-compiler.4.08.1-1 ocamlbuild.0.14.3 ocamlfind.1.9.6
          ocamlfind-secondary.1.9.6 ocplib-endian.1.2 ounit.2.2.7
          ounit2.2.2.7 seq.0.3.1 stdlib-shims.0.3.0 type_conv.113.00.02
          cstruct&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler ocaml&ocamlfind-secondary
- cstruct -> cstruct.1.4.0
    User requested = 1.4.0
- ocaml -> ocaml.4.05.1
    User requested <= 5.1.0
    camlp4 4.05+system requires >= 4.05 & < 4.06
- ocaml-base-compiler -> (problem)
    User requested >= 4.04.1
    Rejected candidates:
      ocaml-base-compiler.5.1.1: Requires ocaml = 5.1.1
      ocaml-base-compiler.5.1.1~rc1: Requires ocaml = 5.1.1
      ocaml-base-compiler.5.1.0: Requires ocaml = 5.1.0
      ocaml-base-compiler.5.1.0~rc3: Requires ocaml = 5.1.0
      ocaml-base-compiler.5.1.0~rc2: Requires ocaml = 5.1.0
      ...
- ocaml-system -> (problem)
    No usable implementations:
      ocaml-system.5.1.1: Availability condition not satisfied
      ocaml-system.5.1.0: Availability condition not satisfied
      ocaml-system.5.0.0: Availability condition not satisfied
      ocaml-system.4.14.1: Availability condition not satisfied
      ocaml-system.4.14.0: Availability condition not satisfied
      ...
- sexplib -> (problem)
    cstruct 1.4.0 requires < 113.01.00
    Rejected candidates:
      sexplib.v0.16.0: Incompatible with restriction: < 113.01.00
      sexplib.v0.15.1: Incompatible with restriction: < 113.01.00
      sexplib.v0.15.0: Incompatible with restriction: < 113.01.00
      sexplib.v0.14.0: Incompatible with restriction: < 113.01.00
      sexplib.v0.13.0: Incompatible with restriction: < 113.01.00
      ...