Package genlet

Failed to find a solution:

no platform:
2025-02-04 13:37.39 [INFO] Solving for ocaml-base-compiler, ocaml,
                           genlet using opam_repository_commit f872de4b7a2f4b7ccc24dfe491575cabe8c9fabe

2025-02-04 13:39.07 [INFO] base: eliminated all possibilities in 1.47 s

2025-02-04 13:39.07 [INFO] = base =

2025-02-04 13:39.07 [INFO] Can't find all required versions.
Selected: base-metaocaml-ocamlfind.base ocaml-config.3
          ocaml-options-vanilla.1 ocamlfind.1.9.6
          genlet&ocaml&ocaml-base-compiler ocaml-variants ocaml-base-compiler
          ocaml-base-compiler
- delimcc -> (problem)
    Rejected candidates:
      delimcc.2023.06.17: Requires ocaml >= 4.12.0 & < 5.0.0
      delimcc.2020.10.08: Requires ocaml >= 4.07.0 & < 4.12.0
      delimcc.2018.03.16: Requires ocaml >= 4.04.0 & < 4.10.0
      delimcc.2017.03.02: Requires ocaml >= 4.04.0 & < 4.10.0
- genlet -> genlet.201406
    User requested = 201406
- ocaml -> ocaml.5.1.1
    User requested <= 5.1.1
- ocaml-base-compiler -> ocaml-base-compiler.5.3.0
    User requested >= 4.04.1
- ocaml-compiler -> (problem)
    ocaml-base-compiler 5.3.0 requires = 5.3.0
    Rejected candidates:
      ocaml-compiler.5.3.0: Requires ocaml = 5.3.0
      ocaml-compiler.5.3.0~rc1: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.3.0~beta2: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.3.0~beta1: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.3.0~alpha1: Incompatible with restriction: = 5.3.0
      ...
- ocaml-variants -> (problem)
    Rejected candidates:
      ocaml-variants.5.4.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.1+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0+options: 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
      ...