Package async_unix

Failed to find a solution:

no platform:
2024-09-12 08:16.11 [INFO] Solving for ocaml-base-compiler, ocaml,
                           async_unix using opam_repository_commit 0329818dcfd3de1a722ea09eeeed94cd24caa375

2024-09-12 08:16.18 [INFO] base: eliminated all possibilities in 3.05 s

2024-09-12 08:16.18 [INFO] = base =

2024-09-12 08:16.18 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-nnp.base
          base-threads.base base-unix.base camlp-streams.5.0.1 camlp4.5.1
          dune.3.16.0 host-arch-x86_64.1 ocaml-config.3
          ocaml-options-vanilla.1 ocamlbuild.0.15.0 ocamlfind.1.9.6
          ounit.2.2.7 ounit2.2.2.7 pa_ounit.112.24.00 pipebang.109.08.00
          seq.base stdlib-shims.0.3.0 async_unix&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler system-mingw ocaml
          base-domains ocaml ocaml-base-compiler
- async_core -> async_core.108.00.01
    async_unix 108.00.01 requires = 108.00.01
- async_unix -> async_unix.108.00.01
    User requested = 108.00.01
- bin_prot -> bin_prot.109.14.00
    async_unix 108.00.01 requires < 113.01.00
- core -> (problem)
    async_core 108.00.01 requires = 108.00.01
    Rejected candidates:
      core.v0.17.1: Incompatible with restriction: = 108.00.01
      core.v0.17.0: Incompatible with restriction: = 108.00.01
      core.v0.16.2: Incompatible with restriction: = 108.00.01
      core.v0.16.1: Incompatible with restriction: = 108.00.01
      core.v0.16.0: Incompatible with restriction: = 108.00.01
      ...
- fieldslib -> (problem)
    async_unix 108.00.01 requires < 113.01.00
    Rejected candidates:
      fieldslib.v0.17.0: Incompatible with restriction: < 113.01.00
      fieldslib.v0.16.0: Incompatible with restriction: < 113.01.00
      fieldslib.v0.15.0: Incompatible with restriction: < 113.01.00
      fieldslib.v0.14.0: Incompatible with restriction: < 113.01.00
      fieldslib.v0.13.0: Incompatible with restriction: < 113.01.00
      ...
- 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)
    async_unix 108.00.01 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)
    bin_prot 109.14.00 requires = 109.14.00
    pa_ounit 112.24.00 requires >= 109.53.00 & < 112.02.00
    Rejected candidates:
      type_conv.113.00.02: Incompatible with restriction: = 109.14.00
      type_conv.113.00.01: Incompatible with restriction: = 109.14.00
      type_conv.113.00.00: Incompatible with restriction: = 109.14.00
      type_conv.112.01.02: Incompatible with restriction: = 109.14.00
      type_conv.112.01.01: Incompatible with restriction: = 109.14.00
      ...