Package ocaml-option-tsan

Failed to find a solution:

no platform:
2025-04-08 16:55.30 [INFO] Solving for ocaml-base-compiler, ocaml,
                           ocaml-option-tsan using opam_repository_commit 1b1456b495ad75f503075d57e8d3e91bc8c0f471

2025-04-08 16:56.10 [INFO] base: eliminated all possibilities in 0.52 s

2025-04-08 16:56.10 [INFO] = base =

2025-04-08 16:56.10 [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 conf-pkg-config.4
          conf-unwind.0 host-arch-x86_64.1 ocaml-variants.5.4.0+trunk
          ocaml-option-tsan&ocaml&ocaml-base-compiler system-mingw
          system-mingw|system-msvc&winpthreads host-arch-x86_64 ocaml
          base-domains ocaml
- ocaml -> (problem)
    User requested <= 5.0.0
    ocaml-variants 5.4.0+trunk requires = 5.4.0
    Rejected candidates:
      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.4.14.1: Incompatible with restriction: = 5.4.0
      ocaml.4.14.0: Incompatible with restriction: = 5.4.0
      ...
- ocaml-base-compiler -> (problem)
    User requested >= 4.04.1
    Rejected candidates:
      ocaml-base-compiler.5.3.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.3.0~rc1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.3.0~beta2: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.3.0~beta1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.3.0~alpha1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ...
- ocaml-option-tsan -> ocaml-option-tsan.1
    User requested = 1
- system-mingw -> (problem)
    No usable implementations:
      system-mingw.1: Availability condition not satisfied