Package core

Failed to find a solution:

no platform:
2024-09-12 08:00.00 [INFO] Solving for ocaml-base-compiler, ocaml,
                           core using opam_repository_commit 0329818dcfd3de1a722ea09eeeed94cd24caa375

2024-09-12 08:00.07 [INFO] base: eliminated all possibilities in 2.89 s

2024-09-12 08:00.07 [INFO] = base =

2024-09-12 08:00.07 [INFO] Can't find all required versions.
Selected: base-bytes.backport base-ocamlbuild.base
          camlp4.4.02.0-1modular-implicits conf-which.1 ocaml-config.3
          ocamlbuild.0 ocamlfind.1.9.6 ounit.2.2.7 res.4.0.7
          core&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler
- bin_prot -> bin_prot.108.07.00
    core 108.07.00 requires = 108.07.00
- comparelib -> comparelib.108.07.00
    core 108.07.00 requires = 108.07.00
- core -> core.108.07.00
    User requested = 108.07.00
- fieldslib -> fieldslib.108.07.00
    core 108.07.00 requires = 108.07.00
- ocaml -> ocaml.3.12.1
    User requested <= 5.1.1
    base-bytes backport requires < 4.02.0
    core 108.07.00 requires < 4.00.0
- ocaml-base-compiler -> (problem)
    User requested >= 4.04.1
    Rejected candidates:
      ocaml-base-compiler.5.2.0: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~rc1: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~beta2: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~beta1: Requires ocaml = 5.2.0
      ocaml-base-compiler.5.2.0~alpha1: Requires ocaml = 5.2.0
      ...
- 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.5.4.0+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.3.0+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.1+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.0+statmemprof: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.0+options: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ...
- 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
      ...
- pa_ounit -> pa_ounit.108.07.00
    core 108.07.00 requires = 108.07.00
- pipebang -> pipebang.108.07.00
    core 108.07.00 requires = 108.07.00
- sexplib -> sexplib.108.07.00
    core 108.07.00 requires = 108.07.00
- type_conv -> type_conv.108.07.00
    bin_prot 108.07.00 requires = 108.07.00
- variantslib -> variantslib.108.07.00
    core 108.07.00 requires = 108.07.00