Package mlpost

Failed to find a solution:

no platform:
2024-09-12 07:55.53 [INFO] Solving for ocaml-base-compiler, ocaml,
                           mlpost using opam_repository_commit 0329818dcfd3de1a722ea09eeeed94cd24caa375

2024-09-12 07:56.00 [INFO] base: eliminated all possibilities in 3.32 s

2024-09-12 07:56.00 [INFO] = base =

2024-09-12 07:56.00 [INFO] Can't find all required versions.
Selected: base-ocamlbuild.base base-threads.base base-unix.base
          bitstring.3.1.1 cairo.1.2.0 conf-autoconf.0.2 conf-cairo.1
          conf-gtk2.1 conf-pkg-config.3 dune.3.16.0 host-arch-x86_64.1
          lablgtk.2.18.5 ocaml-config.3 ocaml-secondary-compiler.4.14.2
          ocamlbuild.0 ocamlfind.1.9.6 ocamlfind-secondary.1.9.6
          ppx_derivers.1.2.1 ppx_tools_versioned.5.4.0 result.1.5
          stdlib-shims.0.3.0 mlpost&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler system-mingw
          system-mingw|system-msvc ocaml&ocamlfind-secondary
- mlpost -> mlpost.0.8.1
    User requested = 0.8.1
- ocaml -> ocaml.4.02.4
    User requested <= 5.1.1
    base-ocamlbuild base requires >= 3.10 & < 4.03
- 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
      ...
- ocaml-migrate-parsetree -> ocaml-migrate-parsetree.1.8.0
    bitstring 3.1.1 requires >= 1.0.5 & < 2.0.0
- system-mingw -> (problem)
    No usable implementations:
      system-mingw.1: Availability condition not satisfied