Package protocol-9p-tool

Failed to find a solution:

no platform:
2025-05-16 17:37.12 [INFO] Solving for ocaml-base-compiler,
                           protocol-9p-tool, constraints ocaml-base-compiler<=5.3.0,
                           protocol-9p-tool=0.12.0 using opam_repository_commit cf409d95af00ff822422bd76b657ed213b661401

2025-05-16 17:37.14 [INFO] base: eliminated all possibilities in 0.55 s

2025-05-16 17:37.14 [INFO] = base =

2025-05-16 17:37.14 [INFO] Can't find all required versions.
Selected: astring.0.8.5 base-bytes.base base-unix.base bigarray-compat.1.1.0
          cmdliner.1.3.0 cppo.1.8.0 csexp.1.5.2 cstruct-sexp.6.0.1
          dune-configurator.3.18.2 fmt.0.10.0 jbuilder.transition logs.0.8.0
          lwt.5.9.1 lwt_log.1.1.2 lwt_react.1.2.0 mirage-channel.4.1.0
          mirage-flow.5.0.0 num.1.5-1 ocaml.5.5.0 ocaml-config.3
          ocaml-options-vanilla.1 ocamlbuild.0.16.1 ocamlfind.1.9.8
          ocplib-endian.1.2 protocol-9p.2.0.2 react.1.2.2 rresult.0.7.0
          topkg.1.0.8 win-error.1.0 protocol-9p-tool&ocaml-base-compiler
          ocaml-variants ocaml-base-compiler ocaml-base-compiler
- base -> base.v0.14.3
    parsexp v0.14.2 requires >= v0.14 & < v0.15
- camomile -> camomile.1.0.1
    lambda-term 1.13 requires >= 0.8.6 & < 2.0.0
- cstruct -> cstruct.6.0.1
    cstruct-sexp 6.0.1 requires = 6.0.1
- dune -> (problem)
    base v0.14.3 requires >= 2.0.0
    csexp 1.5.2 requires >= 3.4
    Rejected candidates:
      dune.3.18.2: Requires jbuilder not(= transition)
      dune.3.18.1: Requires jbuilder not(= transition)
      dune.3.18.0: Requires jbuilder not(= transition)
      dune.3.17.2: Requires jbuilder not(= transition)
      dune.3.17.1: Requires jbuilder not(= transition)
      ...
- lambda-term -> lambda-term.1.13
    protocol-9p-tool 0.12.0 requires < 2.0
- ocaml-base-compiler -> ocaml-base-compiler.5.3.0
    User requested <= 5.3.0
- ocaml-compiler -> (problem)
    ocaml-base-compiler 5.3.0 requires = 5.3.0
    Rejected candidates:
      ocaml-compiler.5.5: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.4: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.3.0: Requires ocaml = 5.3.0
      ocaml-compiler.5.3.0~rc1: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.3.0~beta2: Incompatible with restriction: = 5.3.0
      ...
- ocaml-variants -> (problem)
    Rejected candidates:
      ocaml-variants.5.5.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.1+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0+BER: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ...
- parsexp -> parsexp.v0.14.2
    sexplib v0.14.0 requires >= v0.14 & < v0.15
- ppx_sexp_conv -> ppx_sexp_conv.v0.14.3
    protocol-9p 2.0.2 requires >= v0.9.0 & < v0.15
- ppxlib -> (problem)
    ppx_sexp_conv v0.14.3 requires >= 0.22.0 & < 0.26.0
    Rejected candidates:
      ppxlib.0.36.0: Incompatible with restriction: >= 0.22.0 & < 0.26.0
      ppxlib.0.35.0: Incompatible with restriction: >= 0.22.0 & < 0.26.0
      ppxlib.0.34.0: Incompatible with restriction: >= 0.22.0 & < 0.26.0
      ppxlib.0.33.0: Incompatible with restriction: >= 0.22.0 & < 0.26.0
      ppxlib.0.32.1: Incompatible with restriction: >= 0.22.0 & < 0.26.0
      ...
- protocol-9p-tool -> protocol-9p-tool.0.12.0
    User requested = 0.12.0
- protocol-9p-unix -> (problem)
    protocol-9p-tool 0.12.0 requires >= 0.12.0
    Rejected candidates:
      protocol-9p-unix.2.0.2: Requires mirage-flow >= 3.0.0 & < 4.0.0
      protocol-9p-unix.2.0.1: Requires cstruct >= 3.0.0 & < 6.0.0
      protocol-9p-unix.1.0.1: Requires protocol-9p >= 1.0.1 & < 2.0.0
      protocol-9p-unix.1.0.0: Requires protocol-9p >= 1.0.0 & < 2.0.0
      protocol-9p-unix.0.12.1: Requires protocol-9p = 0.12.1
      ...
- sexplib -> sexplib.v0.14.0
    protocol-9p 2.0.2 requires > 113.00.00 & < v0.15
- sexplib0 -> (problem)
    base v0.14.3 requires >= v0.14 & < v0.15
    Rejected candidates:
      sexplib0.v0.17.0: Incompatible with restriction: >= v0.14 & < v0.15
      sexplib0.v0.16.0: Incompatible with restriction: >= v0.14 & < v0.15
      sexplib0.v0.15.1: Incompatible with restriction: >= v0.14 & < v0.15
      sexplib0.v0.15.0: Incompatible with restriction: >= v0.14 & < v0.15
      sexplib0.v0.14.0: Requires ocaml >= 4.04.2 & < 5.0
      ...
- zed -> zed.1.6
    lambda-term 1.13 requires >= 1.2 & < 2.0