Package cstruct

Failed to find a solution:

no platform:
2024-09-12 07:58.08 [INFO] Solving for ocaml-base-compiler, ocaml,
                           cstruct using opam_repository_commit 0329818dcfd3de1a722ea09eeeed94cd24caa375

2024-09-12 07:58.14 [INFO] base: eliminated all possibilities in 2.72 s

2024-09-12 07:58.14 [INFO] = base =

2024-09-12 07:58.14 [INFO] Can't find all required versions.
Selected: base-bytes.base base-num.base base-threads.base base-unix.base
          conf-time.1 conf-which.1 cppo.1.7.0 dune.3.16.0 host-arch-x86_64.1
          num.0 ocaml-config.3 ocaml-secondary-compiler.4.14.2
          ocamlbuild.0.14.3 ocamlfind.1.9.6 ocamlfind-secondary.1.9.6
          ocplib-endian.1.2 sexplib.v0.9.2 cstruct&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler system-mingw
          system-mingw|system-msvc ocaml&ocamlfind-secondary
- cstruct -> cstruct.2.0.0
    User requested = 2.0.0
- jbuilder -> jbuilder.1.0+beta20.2
    dune 3.16.0 requires not(= transition)
- ocaml -> ocaml.4.03.1
    User requested <= 5.1.1
    base-num base requires < 4.06.0
    cstruct 2.0.0 requires >= 4.02.3 & < 4.04.0
- 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
      ...
- system-mingw -> (problem)
    No usable implementations:
      system-mingw.1: Availability condition not satisfied