Package raven

Failed to find a solution:

no platform:
2025-07-05 07:43.24 [INFO] Solving for ocaml-base-compiler, ocaml,
                           raven using opam_repository_commit 6dea2f93908c01ba6c81b048fe926d48d2309cb8

2025-07-05 07:43.51 [INFO] base: eliminated all possibilities in 0.20 s

2025-07-05 07:43.51 [INFO] = base =

2025-07-05 07:43.51 [INFO] Can't find all required versions.
Selected: base-threads.base base-unix.base dune.3.19.1 ocaml-config.3
          ocaml-options-vanilla.1 raven&ocaml&ocaml-base-compiler
          ocaml-variants ocaml-base-compiler ocaml-base-compiler
- hugin -> (problem)
    Rejected candidates:
      hugin.1.0.0~alpha0: Requires ocaml >= 5.2.0
- kaun -> (problem)
    Rejected candidates:
      kaun.1.0.0~alpha0: Requires ocaml >= 5.2.0
- nx -> (problem)
    Rejected candidates:
      nx.1.0.0~alpha0: Requires ocaml >= 5.2.0
- nx-datasets -> (problem)
    Rejected candidates:
      nx-datasets.1.0.0~alpha0: Requires ocaml >= 5.2.0
- nx-text -> (problem)
    Rejected candidates:
      nx-text.1.0.0~alpha0: Requires ocaml >= 5.2.0
- ocaml -> ocaml.5.0.0
    User requested <= 5.0.0
- ocaml-base-compiler -> ocaml-base-compiler.5.4.0~alpha1
    User requested >= 4.04.1
- ocaml-compiler -> (problem)
    ocaml-base-compiler 5.4.0~alpha1 requires = 5.4.0~alpha1
    Rejected candidates:
      ocaml-compiler.5.5: Incompatible with restriction: = 5.4.0~alpha1
      ocaml-compiler.5.4.0~alpha1: Requires ocaml = 5.4.0
      ocaml-compiler.5.4: Incompatible with restriction: = 5.4.0~alpha1
      ocaml-compiler.5.3.0: Incompatible with restriction: = 5.4.0~alpha1
      ocaml-compiler.5.3.0~rc1: Incompatible with restriction: = 5.4.0~alpha1
      ...
- ocaml-variants -> (problem)
    Rejected candidates:
      ocaml-variants.5.5.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0~alpha1+options: 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
      ...
- quill -> (problem)
    Rejected candidates:
      quill.1.0.0~alpha0: Requires ocaml >= 5.2.0
- raven -> raven.1.0.0~alpha0
    User requested = 1.0.0~alpha0
- rune -> (problem)
    Rejected candidates:
      rune.1.0.0~alpha0: Requires ocaml >= 5.2.0
- sowilo -> (problem)
    Rejected candidates:
      sowilo.1.0.0~alpha0: Requires ocaml >= 5.2.0