Package key-parsers

Failed to find a solution:

no platform:
2024-01-29 14:50.56 [INFO] Solving for ocaml-base-compiler, ocaml,
                           key-parsers using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 14:51.02 [INFO] base: eliminated all possibilities in 3.08 s

2024-01-29 14:51.02 [INFO] = base =

2024-01-29 14:51.02 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-nnp.base
          base-threads.base base-unix.base conf-gmp.4 cppo.1.6.9 dune.3.13.0
          ocaml-compiler-libs.v0.12.4 ocaml-config.3 ocaml-options-vanilla.1
          ocamlfind.1.9.6 ppx_derivers.1.2.1 ppx_deriving_yojson.3.7.0
          ppxlib.0.31.0 result.1.5 seq.base sexplib0.v0.16.0
          stdlib-shims.0.3.0 yojson.2.1.2 zarith.1.13
          key-parsers&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler ocaml base-domains ocaml ocaml-base-compiler
- asn1-combinators -> (problem)
    key-parsers 0.3.0 requires < 0.2.0
    Rejected candidates:
      asn1-combinators.0.2.6: Incompatible with restriction: < 0.2.0
      asn1-combinators.0.2.5: Incompatible with restriction: < 0.2.0
      asn1-combinators.0.2.4: Incompatible with restriction: < 0.2.0
      asn1-combinators.0.2.3: Requires ocaml >= 4.05.0 & < 4.12.0
      asn1-combinators.0.2.2: Requires ocaml >= 4.05.0 & < 4.12.0
      ...
- key-parsers -> key-parsers.0.3.0
    User requested = 0.3.0
- ocaml -> ocaml.5.1.0
    User requested <= 5.1.0
- ocaml-base-compiler -> ocaml-base-compiler.5.1.0
    User requested >= 4.04.1
    ocaml-base-compiler|ocaml-variants|ocaml-system|dkml-base-compiler ocaml-base-compiler requires >= 5.1.0~ & < 5.1.1~
- ppx_deriving -> (problem)
    key-parsers 0.3.0 requires >= 3.0 & < 4.0
    Rejected candidates:
      ppx_deriving.5.2.1: Incompatible with restriction: >= 3.0 & < 4.0
      ppx_deriving.5.2: Incompatible with restriction: >= 3.0 & < 4.0
      ppx_deriving.5.1: Incompatible with restriction: >= 3.0 & < 4.0
      ppx_deriving.5.0: Incompatible with restriction: >= 3.0 & < 4.0
      ppx_deriving.4.5-1: Incompatible with restriction: >= 3.0 & < 4.0
      ...