Package async_rpc_kernel

Failed to find a solution:

no platform:
2024-01-29 14:52.26 [INFO] Solving for ocaml-base-compiler, ocaml,
                           async_rpc_kernel using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 14:52.31 [INFO] base: eliminated all possibilities in 2.51 s

2024-01-29 14:52.31 [INFO] = base =

2024-01-29 14:52.31 [INFO] Can't find all required versions.
Selected: base-ocamlbuild.base camlp4.4.02.0-1modular-implicits
          comparelib.113.00.00 conf-which.1 custom_printf.113.00.00
          enumerate.111.08.00 herelib.112.35.00 ocaml-config.3 ocamlbuild.0
          ocamlfind.1.9.6 ounit.2.2.7 pa_bench.113.00.00 pa_ounit.113.00.00
          pa_test.112.24.00 pipebang.113.00.00 type_conv.113.00.02
          async_rpc_kernel&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler
- async_kernel -> async_kernel.113.00.00
    async_rpc_kernel 113.00.00 requires >= 113.00.00 & < 113.01.00
- async_rpc_kernel -> async_rpc_kernel.113.00.00
    User requested = 113.00.00
- bin_prot -> bin_prot.113.00.00
    async_kernel 113.00.00 requires >= 113.00.00 & < 113.01.00
- core_kernel -> core_kernel.113.00.00
    async_kernel 113.00.00 requires >= 113.00.00 & < 113.01.00
- fieldslib -> fieldslib.113.00.00
    async_kernel 113.00.00 requires >= 113.00.00 & < 113.01.00
- ocaml -> ocaml.4.02.4
    User requested <= 5.1.0
    async_kernel 113.00.00 requires >= 4.02.1 & < 4.03
- 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-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.5.2.0+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.1.2+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.1.1+tsan: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.1.1+options: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ...
- ounit2 -> (problem)
    ounit 2.2.7 requires = 2.2.7
    Rejected candidates:
      ounit2.2.2.7: Requires ocaml >= 4.04.0
      ounit2.2.2.6: Incompatible with restriction: = 2.2.7
      ounit2.2.2.5: Incompatible with restriction: = 2.2.7
      ounit2.2.2.4: Incompatible with restriction: = 2.2.7
      ounit2.2.2.3: Incompatible with restriction: = 2.2.7
      ...
- sexplib -> sexplib.113.00.00
    async_kernel 113.00.00 requires >= 113.00.00 & < 113.01.00
- typerep -> typerep.113.00.00
    core_kernel 113.00.00 requires >= 113.00.00 & < 113.01.00
- variantslib -> variantslib.109.15.03
    core_kernel 113.00.00 requires >= 109.15.00 & < 109.16.00