Package extprot

Failed to find a solution:

no platform:
2024-05-29 14:55.28 [INFO] Solving for ocaml-base-compiler, ocaml,
                           extprot using opam_repository_commit 7311123dcaba6b163a96ad2219b8cc4e59df93a3

2024-05-29 14:55.34 [INFO] base: eliminated all possibilities in 3.10 s

2024-05-29 14:55.34 [INFO] = base =

2024-05-29 14:55.34 [INFO] Can't find all required versions.
Selected: base-bytes.backport base-ocamlbuild.base base-unix.base
          camlp4.4.02.0-1modular-implicits conf-which.1 cppo.1.6.5
          jbuilder.transition ocaml-config.3 ocamlbuild.0 ocamlfind.1.9.6
          omake.0.9.8.6-0.rc1 extprot&ocaml&ocaml-base-compiler extlib
          ocaml-base-compiler ocaml-base-compiler
- dune -> (problem)
    Rejected candidates:
      dune.3.15.3: Requires jbuilder not(= transition)
      dune.3.15.2: Requires jbuilder not(= transition)
      dune.3.15.0: Requires jbuilder not(= transition)
      dune.3.14.2: Requires jbuilder not(= transition)
      dune.3.14.0: Requires jbuilder not(= transition)
      ...
- extlib -> extlib.1.7.7-1
    extlib|extlib-compat extlib requires < 1.7.8
- extprot -> extprot.1.1.1
    User requested = 1.1.1
- ocaml -> ocaml.4.01.0
    User requested <= 5.1.1
    base-bytes backport requires < 4.02.0
- 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
      ...
- ocaml-variants -> (problem)
    camlp4 4.02.0-1modular-implicits requires = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
    Rejected candidates:
      ocaml-variants.5.3.0+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.1+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.0+statmemprof: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.0+options: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.0~rc1+options: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ...
- sexplib -> sexplib.112.01.00
    extprot 1.1.1 requires < 113.01.00
- type_conv -> (problem)
    sexplib 112.01.00 requires not(< 112.01.00)
    sexplib 112.01.00 requires not(>= 112.02.00)
    Rejected candidates:
      type_conv.113.00.02: Incompatible with restriction: not(>= 112.02.00)
      type_conv.113.00.01: Incompatible with restriction: not(>= 112.02.00)
      type_conv.113.00.00: Incompatible with restriction: not(>= 112.02.00)
      type_conv.112.01.02: Requires ocaml >= 4.02.0 & < 4.03
      type_conv.112.01.01: Requires ocaml >= 4.02.0 & < 4.03
      ...