Package vpnkit

Failed to find a solution:

no platform:
2025-05-16 17:11.11 [INFO] Solving for ocaml-base-compiler,
                           vpnkit, constraints ocaml-base-compiler<=5.3.0,
                           vpnkit=0.2.0 using opam_repository_commit cf409d95af00ff822422bd76b657ed213b661401

2025-05-16 17:11.12 [INFO] base: eliminated all possibilities in 0.75 s

2025-05-16 17:11.12 [INFO] = base =

2025-05-16 17:11.12 [INFO] Can't find all required versions.
Selected: angstrom.0.16.1 arp.4.0.0 asl.0.11 astring.0.8.5 base.v0.17.2
          base-bytes.base base-threads.base base-unix.base base64.3.5.1
          bigstringaf.0.10.0 checkseum.0.5.2 cmdliner.1.3.0 cohttp.6.1.0
          cohttp-lwt.6.1.0 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0
          cstruct-lwt.6.2.0 datakit-server-9p.1.0.0 decompress.1.5.3
          digestif.1.3.0 dns-lwt.1.1.3 dnssd.0.5.0 domain-name.0.4.1
          dune-configurator.3.18.2 duration.0.2.1 eqaf.0.10 ethernet.3.2.0
          ezjsonm.1.3.0 fd-send-recv.2.0.2 fmt.0.10.0 hashcons.1.4.0
          hex.1.5.0 http.6.1.0 hvsock.1.0.2 ipaddr.5.6.0 ipaddr-cstruct.5.6.0
          jbuilder.transition jsonm.1.0.2 logs.0.8.0 lru.0.3.1 lwt.5.9.1
          lwt-dllist.1.1.0 macaddr.5.6.0 macaddr-cstruct.5.6.0 metrics.0.4.1
          mirage-clock.4.2.0 mirage-clock-unix.4.2.0 mirage-crypto.2.0.1
          mirage-crypto-rng.2.0.1 mirage-dns.3.1.3 mirage-flow.5.0.0
          mirage-kv-lwt.2.0.0 mirage-mtime.5.0.0 mirage-net.4.0.0
          mirage-profile.0.9.1 mirage-sleep.4.0.0 mirage-stack-lwt.1.4.0
          mirage-time-lwt.1.3.0 mirage-vnetif.0.6.2 mtime.2.1.0 num.1.5-1
          ocaml.5.5.0 ocaml-config.3 ocaml-options-vanilla.1
          ocaml-syntax-shims.1.0.0 ocaml_intrinsics_kernel.v0.17.1
          ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0
          parsexp.v0.17.0 pcap-format.0.6.0 ppx_cstruct.6.2.0
          ppx_sexp_conv.v0.17.0 ppxlib_jane.v0.17.2 psq.0.2.1
          randomconv.0.2.0 re.1.12.0 result.1.5 seq.base sexplib.v0.17.0
          sexplib0.v0.17.0 stringext.1.6.0 tar.3.3.0 tcpip.9.0.1 topkg.1.0.8
          uri.4.4.0 uri-sexp.4.4.0 uuidm.0.9.10 uutf.1.0.4 win-eventlog.0.4
          vpnkit&ocaml-base-compiler ocaml-variants ocaml-base-compiler
          ocaml-base-compiler
- charrua-core -> (problem)
    Rejected candidates:
      charrua-core.0.12.0: Requires cstruct >= 3.0.1 & < 4.0.0
      charrua-core.0.11.2: Requires cstruct >= 3.0.1 & < 4.0.0
      charrua-core.0.11.1: Requires cstruct >= 3.0.1 & < 4.0.0
      charrua-core.0.11.0: Requires cstruct >= 3.0.1 & < 4.0.0
      charrua-core.0.10: Requires cstruct >= 3.0.1 & < 4.0.0
      ...
- datakit-server -> (problem)
    Rejected candidates:
      datakit-server.1.0.0: Requires lwt >= 3.0.0 & < 5.6.0
      datakit-server.0.12.3: Requires lwt >= 3.0.0 & < 5.6.0
      datakit-server.0.12.2: Requires lwt >= 3.0.0 & < 5.6.0
      datakit-server.0.12.0: Requires lwt >= 3.0.0 & < 5.6.0
- dns -> (problem)
    dns-lwt 1.1.3 requires = 1.1.3
    Rejected candidates:
      dns.10.0.0: Incompatible with restriction: = 1.1.3
      dns.9.1.0: Incompatible with restriction: = 1.1.3
      dns.9.0.0: Incompatible with restriction: = 1.1.3
      dns.8.0.0: Incompatible with restriction: = 1.1.3
      dns.7.0.3: Incompatible with restriction: = 1.1.3
      ...
- dns-forward -> (problem)
    Rejected candidates:
      dns-forward.0.10.0: Requires ipaddr < 3.0.0
      dns-forward.0.9.0: Requires ipaddr < 3.0.0
- dune -> (problem)
    angstrom 0.16.1 requires >= 1.8
    arp 4.0.0 requires >= 2.7.0
    base v0.17.2 requires >= 3.11.0
    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)
      ...
- mirage-channel -> (problem)
    vpnkit 0.2.0 requires >= 3.0.1 & < 4.0.0
    Rejected candidates:
      mirage-channel.4.1.0: Incompatible with restriction: >= 3.0.1 & < 4.0.0
      mirage-channel.4.0.1: Requires cstruct >= 4.0.0 & < 6.1.0
      mirage-channel.3.2.0: Requires mirage-flow >= 1.2.0 & < 2.0.0
      mirage-channel.3.1.0: Requires mirage-flow >= 1.2.0 & < 2.0.0
      mirage-channel.3.0.0: Requires mirage-flow >= 1.2.0 & < 2.0.0
- mirage-device -> mirage-device.1.2.0
    mirage-kv 2.0.0 requires >= 1.0.0 & < 2.0.0
- 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-kv -> mirage-kv.2.0.0
    mirage-kv-lwt 2.0.0 requires >= 2.0.0 & < 3.0.0
- mirage-protocols -> (problem)
    mirage-stack 1.4.0 requires >= 1.4.0 & < 4.0.0
    Rejected candidates:
      mirage-protocols.8.0.0: Incompatible with restriction: >= 1.4.0 & < 4.0.0
      mirage-protocols.7.0.0: Requires tcpip not(>= 7.0.0)
      mirage-protocols.6.0.0: Requires mirage-device >= 2.0.0
      mirage-protocols.5.0.0: Requires mirage-device >= 2.0.0
      mirage-protocols.4.0.1: Requires mirage-device >= 2.0.0
      ...
- mirage-stack -> mirage-stack.1.4.0
    mirage-stack-lwt 1.4.0 requires >= 1.3.0 & < 2.0.0
- mirage-time -> mirage-time.1.3.0
    mirage-time-lwt 1.3.0 requires >= 1.0.0 & < 2.0.0
- 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
      ...
- ppxlib -> (problem)
    ppx_cstruct 6.2.0 requires >= 0.16.0
    ppx_sexp_conv v0.17.0 requires >= 0.28.0 & < 0.36.0
    Rejected candidates:
      ppxlib.0.36.0: Incompatible with restriction: >= 0.28.0 & < 0.36.0
      ppxlib.0.35.0: Requires ocaml >= 4.08.0 & < 5.4.0
      ppxlib.0.34.0: Requires ocaml >= 4.04.1 & < 5.4.0
      ppxlib.0.33.0: Requires ocaml >= 4.04.1 & < 5.3.0
      ppxlib.0.32.1: Requires ocaml >= 4.04.1 & < 5.3.0
      ...
- protocol-9p -> (problem)
    datakit-server-9p 1.0.0 requires >= 0.11.0
    Rejected candidates:
      protocol-9p.2.0.2: Requires sexplib > 113.00.00 & < v0.15
      protocol-9p.2.0.1: Requires cstruct >= 4.0.0 & < 6.0.0
      protocol-9p.2.0.0: Requires cstruct >= 3.0.0 & < 4.0.0
      protocol-9p.1.0.1: Requires cstruct >= 3.0.0 & < 4.0.0
      protocol-9p.1.0.0: Requires cstruct >= 3.0.0 & < 4.0.0
      ...
- uwt -> (problem)
    Rejected candidates:
      uwt.0.3.3: Requires ocaml >= 4.02.1 & < 4.12
      uwt.0.3.2: Requires ocaml >= 4.02.1 & < 4.12
      uwt.0.3.0.2: Requires ocaml >= 4.02.1 & < 4.12
      uwt.0.3.0: Requires ocaml >= 4.02.1 & < 4.12
- vpnkit -> vpnkit.0.2.0
    User requested = 0.2.0