Package ocaml-variants

Failed to find a solution:

no platform:
2024-09-13 09:51.28 [INFO] Solving for ocaml-base-compiler, ocaml,
                           ocaml-variants using opam_repository_commit 4093222dece7c1c8f93dc2fd8dd7eec15fa80fed

2024-09-13 09:51.30 [INFO] base: eliminated all possibilities in 0.92 s

2024-09-13 09:51.30 [INFO] = base =

2024-09-13 09:51.30 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-effects.base
          base-nnp.base base-threads.base base-unix.base host-arch-x86_64.1
          ocaml-variants&ocaml&ocaml-base-compiler system-mingw
          system-mingw|system-msvc&winpthreads host-arch-x86_64 ocaml
          base-domains ocaml
- ocaml -> (problem)
    User requested <= 5.1.0
    ocaml-variants 5.4.0+trunk requires = 5.4.0
    Rejected candidates:
      ocaml.5.1.0: Incompatible with restriction: = 5.4.0
      ocaml.5.0.1: Incompatible with restriction: = 5.4.0
      ocaml.5.0.0: Incompatible with restriction: = 5.4.0
      ocaml.4.14.3: Incompatible with restriction: = 5.4.0
      ocaml.4.14.2: Incompatible with restriction: = 5.4.0
      ...
- ocaml-base-compiler -> (problem)
    User requested >= 4.04.1
    Rejected candidates:
      ocaml-base-compiler.5.2.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.2.0~rc1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.2.0~beta2: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.2.0~beta1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.2.0~alpha1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ...
- ocaml-variants -> ocaml-variants.5.4.0+trunk
    User requested = 5.4.0+trunk
- system-mingw -> (problem)
    No usable implementations:
      system-mingw.1: Availability condition not satisfied