Package extprot

Failed to find a solution:

no platform:
2024-09-12 08:05.50 [INFO] Solving for ocaml-base-compiler, ocaml,
                           extprot using opam_repository_commit 0329818dcfd3de1a722ea09eeeed94cd24caa375

2024-09-12 08:05.57 [INFO] base: eliminated all possibilities in 3.56 s

2024-09-12 08:05.57 [INFO] = base =

2024-09-12 08:05.57 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-nnp.base
          base-threads.base base-unix.base host-arch-x86_64.1 ocaml-config.3
          ocaml-options-vanilla.1 ocamlfind.1.9.6 omake.0.10.6
          extprot&ocaml&ocaml-base-compiler extlib ocaml-base-compiler
          ocaml-base-compiler system-mingw ocaml base-domains
          ocaml-base-compiler
- extlib -> (problem)
    extlib|extlib-compat extlib requires < 1.7.8
    Rejected candidates:
      extlib.1.7.9: Incompatible with restriction: < 1.7.8
      extlib.1.7.8: Requires ocaml < 5.0
      extlib.1.7.7-1: Requires ocaml < 5.0
      extlib.1.7.7: Requires ocaml < 4.12.0
      extlib.1.7.6: Requires ocaml < 4.12.0
      ...
- extprot -> extprot.1.1.2
    User requested = 1.1.2
- ocaml -> ocaml.5.1.1
    User requested <= 5.1.1
- ocaml-base-compiler -> ocaml-base-compiler.5.1.1
    User requested >= 4.04.1
    ocaml-base-compiler|ocaml-variants|ocaml-system|dkml-base-compiler ocaml-base-compiler requires >= 5.1.1~ & < 5.1.2~
- sexplib -> (problem)
    extprot 1.1.2 requires < 113.01.00
    Rejected candidates:
      sexplib.v0.17.0: Incompatible with restriction: < 113.01.00
      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
      ...
- system-mingw -> (problem)
    No usable implementations:
      system-mingw.1: Availability condition not satisfied
- type_conv -> (problem)
    Rejected candidates:
      type_conv.113.00.02: Requires ocaml >= 4.02.0 & < 5.0
      type_conv.113.00.01: Requires ocaml >= 4.02.0 & < 4.03
      type_conv.113.00.00: Requires ocaml >= 4.02.0 & < 4.03
      type_conv.112.01.02: Requires ocaml >= 4.02.0 & < 4.03
      type_conv.112.01.01: Requires ocaml >= 4.02.0 & < 4.03
      ...