Package ppxlib

Failed to find a solution:

no platform:
2025-01-08 13:24.32 [INFO] Solving for ocaml-base-compiler, ocaml,
                           ppxlib using opam_repository_commit 2e81d1953c37347d78d994b71ede87c5f6f6e207

2025-01-08 13:25.44 [INFO] base: eliminated all possibilities in 1.21 s

2025-01-08 13:25.44 [INFO] = base =

2025-01-08 13:25.44 [INFO] Can't find all required versions.
Selected: ocaml-config.3 ocaml-options-vanilla.1
          ppxlib&ocaml&ocaml-base-compiler ocaml-variants ocaml-base-compiler
          ocaml-base-compiler
- ocaml -> ocaml.5.1.1
    User requested <= 5.1.1
- ocaml-base-compiler -> ocaml-base-compiler.5.3.0~rc1
    User requested >= 4.04.1
- ocaml-compiler -> (problem)
    ocaml-base-compiler 5.3.0~rc1 requires = 5.3.0~rc1
    Rejected candidates:
      ocaml-compiler.5.3.0~rc1: Requires ocaml = 5.3.0
      ocaml-compiler.5.3.0~beta2: Incompatible with restriction: = 5.3.0~rc1
      ocaml-compiler.5.3.0~beta1: Incompatible with restriction: = 5.3.0~rc1
      ocaml-compiler.5.3.0~alpha1: Incompatible with restriction: = 5.3.0~rc1
      ocaml-compiler.5.3: Incompatible with restriction: = 5.3.0~rc1
- ocaml-variants -> (problem)
    Rejected candidates:
      ocaml-variants.5.4.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0~rc1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0~beta2+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0~beta1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ...
- ppxlib -> (problem)
    User requested = 0.33.1~5.3preview
    No usable implementations:
      ppxlib.0.34.0: Rejected by user-specified constraint ppxlib (= 0.33.1~5.3preview)
      ppxlib.0.33.1~5.3preview: Availability condition not satisfied
      ppxlib.0.33.0: Rejected by user-specified constraint ppxlib (= 0.33.1~5.3preview)
      ppxlib.0.32.1: Rejected by user-specified constraint ppxlib (= 0.33.1~5.3preview)
      ppxlib.0.32.0: Rejected by user-specified constraint ppxlib (= 0.33.1~5.3preview)
      ...