Package alcotest

Failed to find a solution:

no platform:
2024-01-29 14:54.03 [INFO] Solving for ocaml-base-compiler, ocaml,
                           alcotest using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 14:54.09 [INFO] base: eliminated all possibilities in 2.84 s

2024-01-29 14:54.09 [INFO] = base =

2024-01-29 14:54.09 [INFO] Can't find all required versions.
Selected: base-ocamlbuild.base base-threads.base base-unix.base
          cmdliner.0.9.8 dune.3.13.0 ocaml-config.3
          ocaml-secondary-compiler.4.08.1-1 ocamlbuild.0 ocamlfind.1.9.6
          ocamlfind-secondary.1.9.6 result.1.5 stringext.1.6.0
          alcotest&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler ocaml&ocamlfind-secondary
- alcotest -> alcotest.0.4.6
    User requested = 0.4.6
- ocaml -> ocaml.4.02.4
    User requested <= 5.1.0
    alcotest 0.4.6 requires >= 4.00.1 & < 4.03.0
- 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
      ...