Package cow

Failed to find a solution:

no platform:
2024-01-29 15:03.45 [INFO] Solving for ocaml-base-compiler, ocaml,
                           cow using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 15:03.51 [INFO] base: eliminated all possibilities in 2.87 s

2024-01-29 15:03.51 [INFO] = base =

2024-01-29 15:03.51 [INFO] Can't find all required versions.
Selected: angstrom.0.16.0 base-bytes.base base-threads.base base-unix.base
          bigarray-compat.1.1.0 bigstringaf.0.8.0 camlp4.4.05+system
          conf-pkg-config.3 dune.3.13.0 dyntype.0.9.0 ocaml-config.3
          ocaml-secondary-compiler.4.08.1-1 ocaml-syntax-shims.1.0.0
          ocamlbuild.0.14.3 ocamlfind.1.9.6 ocamlfind-secondary.1.9.6
          omd.2.0.0~alpha2 ounit.2.2.7 ounit2.2.2.7 re.1.11.0 seq.0.3.1
          stdlib-shims.0.3.0 stringext.1.6.0 topkg.1.0.7 type_conv.113.00.02
          ulex.1.2 uri.4.2.0 xmlm.1.4.0 cow&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler ocaml&ocamlfind-secondary
- cow -> cow.1.0.0
    User requested = 1.0.0
- ezjsonm -> (problem)
    cow 1.0.0 requires < 0.4.0
    Rejected candidates:
      ezjsonm.1.3.0: Incompatible with restriction: < 0.4.0
      ezjsonm.1.2.0: Incompatible with restriction: < 0.4.0
      ezjsonm.1.1.0: Incompatible with restriction: < 0.4.0
      ezjsonm.1.0.0: Incompatible with restriction: < 0.4.0
      ezjsonm.0.6.0: Incompatible with restriction: < 0.4.0
      ...
- 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
      ...