Package js_of_ocaml

Failed to find a solution:

no platform:
2024-09-12 08:27.32 [INFO] Solving for ocaml-base-compiler, ocaml,
                           js_of_ocaml using opam_repository_commit 0329818dcfd3de1a722ea09eeeed94cd24caa375

2024-09-12 08:27.38 [INFO] base: eliminated all possibilities in 3.19 s

2024-09-12 08:27.38 [INFO] = base =

2024-09-12 08:27.38 [INFO] Can't find all required versions.
Selected: base-bytes.backport base-no-ppx.base base-ocamlbuild.base
          base-threads.base base-unix.base camlp4.4.02.0-1modular-implicits
          conf-which.1 dune.3.16.0 lwt.2.6.0 ocaml-config.3 ocamlfind.1.9.6
          result.1.5 js_of_ocaml&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler base-no-ppx
- js_of_ocaml -> js_of_ocaml.2.1
    User requested = 2.1
- menhir -> menhir.20140422
    js_of_ocaml 2.1 requires < 20200525
- ocaml -> ocaml.4.01.0
    User requested <= 5.1.1
    base-bytes backport requires < 4.02.0
- 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 2.6.0 requires not(= 0.9.0)
    menhir 20140422 requires < 0.9.1
- ocaml|ocaml&ocamlfind-secondary -> (problem)
    Rejected candidates:
      ocaml: Requires ocaml >= 4.08
      ocaml&ocamlfind-secondary: Requires ocaml >= 4.02 & < 4.08~~