Package depext

Failed to find a solution:

no platform:
2024-05-29 14:49.13 [INFO] Solving for ocaml-base-compiler, ocaml,
                           depext using opam_repository_commit 7311123dcaba6b163a96ad2219b8cc4e59df93a3

2024-05-29 14:51.33 [INFO] base: eliminated all possibilities in 2.43 s

2024-05-29 14:51.33 [INFO] = base =

2024-05-29 14:51.33 [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 depext&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler ocaml base-domains
          ocaml-base-compiler
- depext -> (problem)
    User requested = 1.0.2
    No usable implementations:
      depext.transition: Rejected by user-specified constraint depext (= 1.0.2)
      depext.1.0.5: Rejected by user-specified constraint depext (= 1.0.2)
      depext.1.0.4: Rejected by user-specified constraint depext (= 1.0.2)
      depext.1.0.3: Rejected by user-specified constraint depext (= 1.0.2)
      depext.1.0.2: Availability condition not satisfied
      ...
- ocaml -> ocaml.5.1.1
    User requested <= 5.1.1
- ocaml-base-compiler -> ocaml-base-compiler.5.1.1
    User requested >= 4.04.1
    ocaml-base-compiler|ocaml-variants|ocaml-system|dkml-base-compiler ocaml-base-compiler requires >= 5.1.1~ & < 5.1.2~