Package pa_test

Failed to find a solution:

no platform:
2024-09-12 08:00.09 [INFO] Solving for ocaml-base-compiler, ocaml,
                           pa_test using opam_repository_commit 0329818dcfd3de1a722ea09eeeed94cd24caa375

2024-09-12 08:00.15 [INFO] base: eliminated all possibilities in 3.12 s

2024-09-12 08:00.15 [INFO] = base =

2024-09-12 08:00.15 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-nnp.base
          base-threads.base base-unix.base camlp-streams.5.0.1 camlp4.5.1
          dune.3.16.0 host-arch-x86_64.1 ocaml-config.3
          ocaml-options-vanilla.1 ocamlbuild.0.15.0 ocamlfind.1.9.6
          pa_test&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler system-mingw ocaml base-domains ocaml
          ocaml-base-compiler
- comparelib -> comparelib.109.60.00
    pa_test 111.08.00 requires >= 109.27.00 & < 109.61.00
- 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~
- pa_test -> pa_test.111.08.00
    User requested = 111.08.00
- sexplib -> (problem)
    pa_test 111.08.00 requires >= 110.01.00 & < 112.07.00
    Rejected candidates:
      sexplib.v0.17.0: Incompatible with restriction: >= 110.01.00 & < 112.07.00
      sexplib.v0.16.0: Incompatible with restriction: >= 110.01.00 & < 112.07.00
      sexplib.v0.15.1: Incompatible with restriction: >= 110.01.00 & < 112.07.00
      sexplib.v0.15.0: Incompatible with restriction: >= 110.01.00 & < 112.07.00
      sexplib.v0.14.0: Incompatible with restriction: >= 110.01.00 & < 112.07.00
      ...
- system-mingw -> (problem)
    No usable implementations:
      system-mingw.1: Availability condition not satisfied
- type_conv -> (problem)
    comparelib 109.60.00 requires >= 109.60.00 & < 112.02.00
    Rejected candidates:
      type_conv.113.00.02: Incompatible with restriction: >= 109.60.00 & < 112.02.00
      type_conv.113.00.01: Incompatible with restriction: >= 109.60.00 & < 112.02.00
      type_conv.113.00.00: Incompatible with restriction: >= 109.60.00 & < 112.02.00
      type_conv.112.01.02: Requires ocaml >= 4.02.0 & < 4.03
      type_conv.112.01.01: Requires ocaml >= 4.02.0 & < 4.03
      ...