Package vchan-xen

Failed to find a solution:

no platform:
2024-01-29 15:07.38 [INFO] Solving for ocaml-base-compiler, ocaml,
                           vchan-xen using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 15:07.43 [INFO] base: eliminated all possibilities in 2.34 s

2024-01-29 15:07.43 [INFO] = base =

2024-01-29 15:07.43 [INFO] Can't find all required versions.
Selected: base.v0.16.3 base-bigarray.base base-bytes.base base-domains.base
          base-nnp.base base-threads.base base-unix.base cmdliner.1.2.0
          conf-pkg-config.3 cppo.1.6.9 csexp.1.5.2 cstruct.6.2.0 dune.3.13.0
          dune-configurator.3.13.0 fmt.0.9.0 io-page.3.0.0 lwt.5.7.0 num.1.5
          ocaml-compiler-libs.v0.12.4 ocaml-config.3 ocaml-options-vanilla.1
          ocamlbuild.0.14.3 ocamlfind.1.9.6 ocplib-endian.1.2 parsexp.v0.16.0
          ppx_cstruct.6.2.0 ppx_derivers.1.2.1 ppx_sexp_conv.v0.16.0
          ppxlib.0.31.0 result.1.5 sexplib.v0.16.0 sexplib0.v0.16.0
          stdlib-shims.0.3.0 topkg.1.0.7 xenstore.2.2.0
          xenstore_transport.1.3.0 vchan-xen&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler ocaml base-domains ocaml
          ocaml-base-compiler
- mirage-flow-lwt -> (problem)
    Rejected candidates:
      mirage-flow-lwt.1.6.0: Requires cstruct >= 2.0.0 & < 6.1.0
      mirage-flow-lwt.1.5.0: Requires cstruct >= 2.0.0 & < 6.1.0
      mirage-flow-lwt.1.4.0: Requires lwt < 5.6.0
      mirage-flow-lwt.1.3.0: Requires lwt < 5.6.0
      mirage-flow-lwt.1.2.0: Requires fmt < 0.8.10
- mirage-xen -> (problem)
    io-page 3.0.0 requires not(< 6.0.0)
    vchan-xen 4.0.1 requires < 3.3.0
    Rejected candidates:
      mirage-xen.8.0.2: Incompatible with restriction: < 3.3.0
      mirage-xen.8.0.1: Incompatible with restriction: < 3.3.0
      mirage-xen.8.0.0: Incompatible with restriction: < 3.3.0
      mirage-xen.7.2.0: Incompatible with restriction: < 3.3.0
      mirage-xen.6.0.1: Incompatible with restriction: < 3.3.0
      ...
- 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~
- ppx_tools -> (problem)
    Rejected candidates:
      ppx_tools.6.6: Requires ocaml >= 4.08.0 & < 5.1.0
      ppx_tools.6.5: Requires ocaml >= 4.08.0 & < 4.15.0
      ppx_tools.6.4: Requires ocaml >= 4.08.0 & < 4.14.0
      ppx_tools.6.3: Requires ocaml >= 4.08.0 & < 4.13.0
      ppx_tools.6.2: Requires ocaml >= 4.08.0 & < 4.12.0
      ...
- vchan -> (problem)
    vchan-xen 4.0.1 requires >= 4.0.0 & < 4.0.2
    Rejected candidates:
      vchan.6.0.1: Incompatible with restriction: >= 4.0.0 & < 4.0.2
      vchan.6.0.0: Requires cstruct >= 1.9.0 & < 6.1.0
      vchan.5.0.0: Requires cstruct >= 1.9.0 & < 6.1.0
      vchan.4.0.3: Incompatible with restriction: >= 4.0.0 & < 4.0.2
      vchan.4.0.2: Incompatible with restriction: >= 4.0.0 & < 4.0.2
      ...
- vchan-xen -> vchan-xen.4.0.1
    User requested = 4.0.1