Package protocol-9p-tool

Failed to find a solution:

no platform:
2025-06-02 22:42.21 [INFO] Solving for ocaml-base-compiler,
                           protocol-9p-tool, constraints ocaml-base-compiler<=5.3.0,
                           protocol-9p-tool=2.0.2 using opam_repository_commit c037675bed027195b802bf40b1840ece3feb3b2a

2025-06-02 22:42.23 [INFO] base: eliminated all possibilities in 0.62 s

2025-06-02 22:42.23 [INFO] = base =

2025-06-02 22:42.23 [INFO] Can't find all required versions.
Selected: astring.0.8.5 base-bytes.base base-threads.base base-unix.base
          cmdliner.1.3.0 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0
          cstruct-sexp.6.2.0 dune.3.19.0 dune-configurator.3.19.0 fmt.0.10.0
          lambda-term.3.3.2 logs.0.8.0 lwt.5.9.1 lwt_react.1.2.0 mew.0.1.0
          mew_vi.0.5.0 mirage-channel.5.0.0 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 result.1.5 rresult.0.7.0 topkg.1.0.8
          trie.1.0.0 uchar.0.0.2 uucp.16.0.0 uuseg.16.0.0 uutf.1.0.4
          win-error.1.0 zed.3.2.3 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
- 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.5.4.0~alpha1: 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-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.5.4.0~alpha1+options: 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
      ...
- 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.0.37.0~5.4preview: Incompatible with restriction: >= 0.22.0 & < 0.26.0
      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
      ...
- protocol-9p-tool -> protocol-9p-tool.2.0.2
    User requested = 2.0.2
- protocol-9p-unix -> (problem)
    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
      ...