Package ppx_variants_conv

Failed to find a solution:

no platform:
2024-09-12 07:56.55 [INFO] Solving for ocaml-base-compiler, ocaml,
                           ppx_variants_conv using opam_repository_commit 0329818dcfd3de1a722ea09eeeed94cd24caa375

2024-09-12 07:57.01 [INFO] base: eliminated all possibilities in 2.92 s

2024-09-12 07:57.01 [INFO] = base =

2024-09-12 07:57.01 [INFO] Can't find all required versions.
Selected: base-ocamlbuild.base base-threads.base base-unix.base cppo.1.7.0
          dune.3.16.0 host-arch-x86_64.1 js-build-tools.113.33.04
          ocaml-config.3 ocaml-secondary-compiler.4.14.2 ocamlbuild.0
          ocamlfind.1.9.6 ocamlfind-secondary.1.9.6 ppx_derivers.1.2.1
          ppx_deriving.4.5-1 ppx_tools.5.0+4.02.0 ppxfind.1.4 result.1.5
          ppx_variants_conv&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler system-mingw system-mingw|system-msvc
          ocaml&ocamlfind-secondary
- ocaml -> ocaml.4.02.3
    User requested <= 5.1.1
    base-ocamlbuild base requires >= 3.10 & < 4.03
    ppx_core 113.33.03 requires = 4.02.3
- 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-migrate-parsetree -> ocaml-migrate-parsetree.1.8.0
    ppx_deriving 4.5-1 requires < 2.0.0
- ppx_core -> ppx_core.113.33.03
    ppx_driver 113.33.04 requires >= 113.33.03 & < 113.34.00
- ppx_driver -> ppx_driver.113.33.04
    ppx_type_conv 113.33.03 requires >= 113.33.03 & < 113.34.00
- ppx_optcomp -> ppx_optcomp.113.33.03
    ppx_driver 113.33.04 requires >= 113.33.03 & < 113.34.00
- ppx_type_conv -> ppx_type_conv.113.33.03
    ppx_variants_conv 113.33.00 requires >= 113.33.00 & < 113.34.00
- ppx_variants_conv -> ppx_variants_conv.113.33.00
    User requested = 113.33.00
- system-mingw -> (problem)
    No usable implementations:
      system-mingw.1: Availability condition not satisfied
- variantslib -> variantslib.113.24.00
    ppx_variants_conv 113.33.00 requires >= 113.24.00 & < 113.25.00