Package cohttp-lwt-unix

Failed to find a solution:

no platform:
2024-01-29 15:07.30 [INFO] Solving for ocaml-base-compiler, ocaml,
                           cohttp-lwt-unix using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 15:07.36 [INFO] base: eliminated all possibilities in 2.41 s

2024-01-29 15:07.36 [INFO] = base =

2024-01-29 15:07.36 [INFO] Can't find all required versions.
Selected: angstrom.0.16.0 asn1-combinators.0.2.6 astring.0.8.5 base.v0.16.3
          base-bigarray.base base-bytes.base base-domains.base base-nnp.base
          base-threads.base base-unix.base base64.3.5.1 bigstringaf.0.9.1
          bos.0.2.1 ca-certs.0.2.3 cmdliner.1.2.0 conf-gmp.4
          conf-gmp-powm-sec.3 cppo.1.6.9 csexp.1.5.2 cstruct.6.2.0
          domain-name.0.4.0 dune.3.13.0 dune-configurator.3.13.0
          duration.0.2.1 eqaf.0.9 fmt.0.9.0 fpath.0.7.3 gmap.0.3.0
          ipaddr.5.5.0 ipaddr-sexp.5.5.0 logs.0.7.0 lwt.5.7.0 macaddr.5.5.0
          magic-mime.1.3.1 mirage-crypto.0.11.2 mirage-crypto-ec.0.11.2
          mirage-crypto-pk.0.11.2 mirage-crypto-rng.0.11.2 num.1.5
          ocaml-compiler-libs.v0.12.4 ocaml-config.3 ocaml-options-vanilla.1
          ocaml-syntax-shims.1.0.0 ocamlbuild.0.14.3 ocamlfind.1.9.6
          ocplib-endian.1.2 parsexp.v0.16.0 pbkdf.1.2.0 ppx_derivers.1.2.1
          ppx_sexp_conv.v0.16.0 ppxlib.0.31.0 ptime.1.1.0 rresult.0.7.0
          sexplib.v0.16.0 sexplib0.v0.16.0 stdlib-shims.0.3.0 stringext.1.6.0
          topkg.1.0.7 uri.4.4.0 x509.0.16.5 zarith.1.13
          cohttp-lwt-unix&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler ocaml base-domains ocaml ocaml-base-compiler
- cohttp -> (problem)
    cohttp-lwt 2.5.3 requires = 2.5.3
    Rejected candidates:
      cohttp.6.0.0~beta2: Incompatible with restriction: = 2.5.3
      cohttp.6.0.0~alpha2: Incompatible with restriction: = 2.5.3
      cohttp.6.0.0~alpha1: Incompatible with restriction: = 2.5.3
      cohttp.6.0.0~alpha0: Incompatible with restriction: = 2.5.3
      cohttp.5.3.1: Incompatible with restriction: = 2.5.3
      ...
- cohttp-lwt -> cohttp-lwt.2.5.3
    cohttp-lwt-unix 2.5.3 requires = 2.5.3
- cohttp-lwt-unix -> cohttp-lwt-unix.2.5.3
    User requested = 2.5.3
- conduit -> conduit.4.0.2
    conduit-lwt 4.0.2 requires = 4.0.2
- conduit-lwt -> conduit-lwt.4.0.2
    conduit-lwt-unix 4.0.2 requires = 4.0.2
- conduit-lwt-unix -> conduit-lwt-unix.4.0.2
    cohttp-lwt-unix 2.5.3 requires >= 1.0.3 & < 5.0.0
- ocaml -> ocaml.5.1.0
    User requested <= 5.1.0
- ocaml-base-compiler -> ocaml-base-compiler.5.1.0
    User requested >= 4.04.1
    ocaml-base-compiler|ocaml-variants|ocaml-system|dkml-base-compiler ocaml-base-compiler requires >= 5.1.0~ & < 5.1.1~