Package obus

Failed to find a solution:

no platform:
2024-09-12 08:04.54 [INFO] Solving for ocaml-base-compiler, ocaml,
                           obus using opam_repository_commit 0329818dcfd3de1a722ea09eeeed94cd24caa375

2024-09-12 08:05.01 [INFO] base: eliminated all possibilities in 3.39 s

2024-09-12 08:05.01 [INFO] = base =

2024-09-12 08:05.01 [INFO] Can't find all required versions.
Selected: base-ocamlbuild.base base-threads.base base-unix.base
          camlp4.4.02.0-1modular-implicits conf-which.1 cppo.1.7.0
          cppo_ocamlbuild.1.7.0 dune.3.16.0 host-arch-x86_64.1 ocaml-config.3
          ocaml-secondary-compiler.4.14.2 ocamlfind.1.9.6
          ocamlfind-secondary.1.9.6 react.1.2.1 result.1.5 topkg.1.0.0
          type_conv.113.00.02 xmlm.1.3.0 obus&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler system-mingw
          system-mingw|system-msvc ocaml&ocamlfind-secondary base-no-ppx
- base-no-ppx -> (problem)
    Rejected candidates:
      base-no-ppx.base: Requires ocaml < 4.02.0
- lwt -> lwt.2.7.1
    obus 1.1.6 requires < 3.0.0
- obus -> obus.1.1.6
    User requested = 1.1.6
- ocaml -> ocaml.4.02.4
    User requested <= 5.1.1
    base-ocamlbuild base requires >= 3.10 & < 4.03
- ocaml-base-compiler -> (problem)
    User requested >= 4.04.1
    Rejected candidates:
      ocaml-base-compiler.5.2.0: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~rc1: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~beta2: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~beta1: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~alpha1: Requires ocaml = 5.2.0
      ...
- ocaml-variants -> (problem)
    camlp4 4.02.0-1modular-implicits requires = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
    Rejected candidates:
      ocaml-variants.5.4.0+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.3.0+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.1+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.0+statmemprof: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.0+options: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ...
- ocamlbuild -> ocamlbuild.0
    lwt 2.7.1 requires not(= 0.9.0)
- system-mingw -> (problem)
    No usable implementations:
      system-mingw.1: Availability condition not satisfied