Package ocp-index

Failed to find a solution:

no platform:
2024-01-29 14:46.26 [INFO] Solving for ocaml-base-compiler, ocaml,
                           ocp-index using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 14:46.32 [INFO] base: eliminated all possibilities in 2.70 s

2024-01-29 14:46.32 [INFO] = base =

2024-01-29 14:46.32 [INFO] Can't find all required versions.
Selected: base-bytes.base base-threads.base base-unix.base dune.3.13.0
          ocaml-config.3 ocaml-secondary-compiler.4.08.1-1 ocamlfind.1.9.6
          ocamlfind-secondary.1.9.6 ocp-build.1.99.21 ocp-indent.1.8.1
          re.1.11.0 ocp-index&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler ocaml&ocamlfind-secondary seq&ocaml
- cmdliner -> cmdliner.1.0.4
    ocp-build 1.99.21 requires >= 1 & < 1.1.0
- ocaml -> ocaml.4.03.1
    User requested <= 5.1.0
    ocp-build 1.99.21 requires < 4.12
    ocp-index 1.1.4 requires >= 4.01.0 & < 4.04
- ocaml-base-compiler -> (problem)
    User requested >= 4.04.1
    Rejected candidates:
      ocaml-base-compiler.5.1.1: Requires ocaml = 5.1.1
      ocaml-base-compiler.5.1.1~rc1: Requires ocaml = 5.1.1
      ocaml-base-compiler.5.1.0: Requires ocaml = 5.1.0
      ocaml-base-compiler.5.1.0~rc3: Requires ocaml = 5.1.0
      ocaml-base-compiler.5.1.0~rc2: Requires ocaml = 5.1.0
      ...
- ocp-index -> ocp-index.1.1.4
    User requested = 1.1.4
- seq -> seq.0.3.1
    seq&ocaml|seq&ocaml seq&ocaml requires < base