Package feat

Failed to find a solution:

no platform:
2024-01-29 15:03.06 [INFO] Solving for ocaml-base-compiler, ocaml,
                           feat using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 15:03.11 [INFO] base: eliminated all possibilities in 2.55 s

2024-01-29 15:03.11 [INFO] = base =

2024-01-29 15:03.11 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-nnp.base
          base-threads.base base-unix.base ocaml-config.3
          ocaml-options-vanilla.1 feat&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler ocaml base-domains
          ocaml-base-compiler
- feat -> (problem)
    User requested = 20220101
    No usable implementations:
      feat.20220407: Rejected by user-specified constraint feat (= 20220101)
      feat.20220101: Availability condition not satisfied
      feat.20211224: Rejected by user-specified constraint feat (= 20220101)
      feat.20201231: Rejected by user-specified constraint feat (= 20220101)
- 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~