Package nbd

Failed to find a solution:

no platform:
2024-05-29 14:59.46 [INFO] Solving for ocaml-base-compiler, ocaml,
                           nbd using opam_repository_commit 7311123dcaba6b163a96ad2219b8cc4e59df93a3

2024-05-29 14:59.52 [INFO] base: eliminated all possibilities in 3.43 s

2024-05-29 14:59.52 [INFO] = base =

2024-05-29 14:59.52 [INFO] Can't find all required versions.
Selected: angstrom.0.16.0 base-bigarray.base base-bytes.base
          base-domains.base base-nnp.base base-threads.base base-unix.base
          bigstringaf.0.9.1 cmdliner.1.3.0 conf-time.1 conf-which.1
          cppo.1.6.9 csexp.1.5.2 dune.3.15.3 dune-configurator.3.15.3
          oasis.0.4.11 ocaml-config.3 ocaml-options-vanilla.1
          ocaml-syntax-shims.1.0.0 ocamlbuild.0.14.3 ocamlfind.1.9.6
          ocplib-endian.1.2 stringext.1.6.0 uri.4.4.0
          nbd&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler ocaml base-domains ocaml ocaml-base-compiler
- cstruct -> cstruct.1.7.1
    nbd 2.0.1 requires > 1.0.0 & < 2.0.0
- io-page -> (problem)
    Rejected candidates:
      io-page.3.0.0: Requires cstruct >= 2.0.0
      io-page.2.4.0: Requires cstruct >= 2.0.0
      io-page.2.3.0: Requires cstruct >= 2.0.0
      io-page.2.2.0: Requires cstruct >= 2.0.0
      io-page.2.1.0: Requires cstruct >= 2.0.0
      ...
- lwt -> (problem)
    nbd 2.0.1 requires >= 2.4.5 & < 2.6.0
    Rejected candidates:
      lwt.5.7.0: Incompatible with restriction: >= 2.4.5 & < 2.6.0
      lwt.5.6.1: Requires ocaml >= 4.08 & < 5.1
      lwt.5.6.0: Requires ocaml >= 4.08 & < 5.1
      lwt.5.5.0: Requires ocaml (>= 4.02.0 | >= 4.06.0) & < 5.0
      lwt.5.4.2: Requires ocaml >= 4.02.0 & < 5.0
      ...
- mirage -> (problem)
    nbd 2.0.1 requires < 3.0.0
    Rejected candidates:
      mirage.4.5.1: Incompatible with restriction: < 3.0.0
      mirage.4.5.0: Incompatible with restriction: < 3.0.0
      mirage.4.4.2: Incompatible with restriction: < 3.0.0
      mirage.4.4.1: Incompatible with restriction: < 3.0.0
      mirage.4.4.0: Incompatible with restriction: < 3.0.0
      ...
- mirage-block-unix -> (problem)
    Rejected candidates:
      mirage-block-unix.2.14.2: Requires cstruct >= 6.0.0
      mirage-block-unix.2.14.1: Requires cstruct >= 6.0.0
      mirage-block-unix.2.14.0: Requires ocaml >= 4.06.0 & < 5.0
      mirage-block-unix.2.13.0: Requires ocaml >= 4.06.0 & < 5.0
      mirage-block-unix.2.12.1: Requires ocaml >= 4.06.0 & < 5.0
      ...
- nbd -> nbd.2.0.1
    User requested = 2.0.1
- ocaml -> ocaml.5.1.1
    User requested <= 5.1.1
- ocaml-base-compiler -> ocaml-base-compiler.5.1.1
    User requested >= 4.04.1
    ocaml-base-compiler|ocaml-variants|ocaml-system|dkml-base-compiler ocaml-base-compiler requires >= 5.1.1~ & < 5.1.2~
- ocamlify -> (problem)
    Rejected candidates:
      ocamlify.0.0.1: Requires ocaml < 5.0
- ocamlmod -> (problem)
    Rejected candidates:
      ocamlmod.0.0.9: Requires ocaml < 5.0
      ocamlmod.0.0.8: Requires ocaml < 5.0
      ocamlmod.0.0.7: Requires ocaml < 4.06.0
      ocamlmod.0.0.4: Requires ocaml < 4.06.0
      ocamlmod.0.0.3: Requires ocaml < 4.06.0
- sexplib -> (problem)
    cstruct 1.7.1 requires < 113.01.00
    Rejected candidates:
      sexplib.v0.17.0: Incompatible with restriction: < 113.01.00
      sexplib.v0.16.0: Incompatible with restriction: < 113.01.00
      sexplib.v0.15.1: Incompatible with restriction: < 113.01.00
      sexplib.v0.15.0: Incompatible with restriction: < 113.01.00
      sexplib.v0.14.0: Incompatible with restriction: < 113.01.00
      ...
- type_conv -> (problem)
    Rejected candidates:
      type_conv.113.00.02: Requires ocaml >= 4.02.0 & < 5.0
      type_conv.113.00.01: Requires ocaml >= 4.02.0 & < 4.03
      type_conv.113.00.00: Requires ocaml >= 4.02.0 & < 4.03
      type_conv.112.01.02: Requires ocaml >= 4.02.0 & < 4.03
      type_conv.112.01.01: Requires ocaml >= 4.02.0 & < 4.03
      ...