Package devkit

Failed to find a solution:

no platform:
2024-01-29 15:03.49 [INFO] Solving for ocaml-base-compiler, ocaml,
                           devkit using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 15:03.55 [INFO] base: eliminated all possibilities in 2.78 s

2024-01-29 15:03.55 [INFO] = base =

2024-01-29 15:03.55 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-bytes.base base-ocamlbuild.base
          base-threads.base base-unix.base camlp4.4.02.0-1modular-implicits
          camlzip.1.10 conf-libcurl.2 conf-libevent.1 conf-libpcre.1
          conf-pkg-config.3 conf-which.1 conf-zlib.1 cppo.1.6.9
          cppo_ocamlbuild.1.6.9 dune.3.13.0 extlib.1.7.9 libevent.0.8.1
          ocaml-config.3 ocaml-secondary-compiler.4.08.1-1 ocamlfind.1.9.6
          ocamlfind-secondary.1.9.6 ocamlnet.4.1.9-2 ocurl.0.9.1 ounit.2.2.7
          pcre.7.2.3 ppx_derivers.1.2.1 result.1.5 topkg.1.0.0 xmlm.1.3.0
          devkit&ocaml&ocaml-base-compiler extlib ocaml-base-compiler
          ocaml-base-compiler ocaml&ocamlfind-secondary base-no-ppx
- base-no-ppx -> (problem)
    Rejected candidates:
      base-no-ppx.base: Requires ocaml < 4.02.0
- devkit -> devkit.0.3
    User requested = 0.3
- extunix -> extunix.0.2.0
    devkit 0.3 requires >= 0.1.2 & < 0.3
- lwt -> lwt.3.0.0
    devkit 0.3 requires >= 2.5.0 & < 4.0.0
- ocaml -> ocaml.4.02.4
    User requested <= 5.1.0
    base-ocamlbuild base requires >= 3.10 & < 4.03
- 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
      ...
- ocaml-migrate-parsetree -> ocaml-migrate-parsetree.1.8.0
    extunix 0.2.0 requires >= 1.8.0 & < 2.0.0
- ocaml-variants -> (problem)
    camlp4 4.02.0-1modular-implicits requires = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
    Rejected candidates:
      ocaml-variants.5.3.0+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.0+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.1.2+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.1.1+tsan: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.1.1+options: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ...
- ocamlbuild -> ocamlbuild.0
    extunix 0.2.0 requires <> 0.9.0
- ounit2 -> (problem)
    ounit 2.2.7 requires = 2.2.7
    Rejected candidates:
      ounit2.2.2.7: Requires ocaml >= 4.04.0
      ounit2.2.2.6: Incompatible with restriction: = 2.2.7
      ounit2.2.2.5: Incompatible with restriction: = 2.2.7
      ounit2.2.2.4: Incompatible with restriction: = 2.2.7
      ounit2.2.2.3: Incompatible with restriction: = 2.2.7
      ...