Package opium

Failed to find a solution:

no platform:
2024-05-29 14:57.38 [INFO] Solving for ocaml-base-compiler, ocaml,
                           opium using opam_repository_commit 7311123dcaba6b163a96ad2219b8cc4e59df93a3

2024-05-29 14:57.45 [INFO] base: eliminated all possibilities in 3.50 s

2024-05-29 14:57.45 [INFO] = base =

2024-05-29 14:57.45 [INFO] Can't find all required versions.
Selected: angstrom.0.16.0 base.v0.17.0 base-bigarray.base base-bytes.base
          base-domains.base base-nnp.base base-threads.base base-unix.base
          base_bigstring.v0.17.0 base_quickcheck.v0.17.0 bigstringaf.0.9.1
          bin_prot.v0.17.0 capitalization.v0.17.0 cmdliner.1.3.0
          cohttp.6.0.0~beta2 core.v0.17.1 core_kernel.v0.17.0 cppo.1.6.9
          csexp.1.5.2 cstruct.6.2.0 dune.3.15.3 dune-configurator.3.15.3
          ezjsonm.1.3.0 fmt.0.9.0 gel.v0.17.0 hex.1.5.0 http.6.0.0~beta2
          int_repr.v0.17.0 jane-street-headers.v0.17.0 jsonm.1.0.2
          jst-config.v0.17.0 logs.0.7.0 lwt.5.7.0 magic-mime.1.3.1
          oasis.0.4.11 ocaml-compiler-libs.v0.12.4 ocaml-config.3
          ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0
          ocaml_intrinsics_kernel.v0.17.0 ocamlbuild.0.14.3 ocamlfind.1.9.6
          ocplib-endian.1.2 ppx_assert.v0.17.0 ppx_base.v0.17.0
          ppx_bench.v0.17.0 ppx_bin_prot.v0.17.0 ppx_cold.v0.17.0
          ppx_compare.v0.17.0 ppx_custom_printf.v0.17.0 ppx_derivers.1.2.1
          ppx_diff.v0.17.0 ppx_disable_unused_warnings.v0.17.0
          ppx_enumerate.v0.17.0 ppx_expect.v0.17.0 ppx_fields_conv.v0.17.0
          ppx_fixed_literal.v0.17.0 ppx_globalize.v0.17.0 ppx_hash.v0.17.0
          ppx_here.v0.17.0 ppx_ignore_instrumentation.v0.17.0
          ppx_inline_test.v0.17.0 ppx_jane.v0.17.0 ppx_let.v0.17.0
          ppx_log.v0.17.0 ppx_module_timer.v0.17.0 ppx_optcomp.v0.17.0
          ppx_optional.v0.17.0 ppx_pipebang.v0.17.0 ppx_sexp_conv.v0.17.0
          ppx_sexp_message.v0.17.0 ppx_sexp_value.v0.17.0 ppx_stable.v0.17.0
          ppx_stable_witness.v0.17.0 ppx_string.v0.17.0
          ppx_string_conv.v0.17.0 ppx_tydi.v0.17.0 ppx_typerep_conv.v0.17.0
          ppx_variants_conv.v0.17.0 ppxlib.0.32.1 ppxlib_jane.v0.17.0
          re.1.11.0 seq.base sexplib0.v0.17.0 splittable_random.v0.17.0
          stdio.v0.17.0 stdlib-shims.0.3.0 stringext.1.6.0 time_now.v0.17.0
          topkg.1.0.7 typerep.v0.17.0 uopt.v0.17.0 uri.4.4.0 uri-sexp.4.4.0
          uutf.1.0.3 variantslib.v0.17.0 opium&ocaml&ocaml-base-compiler
          ocaml-base-compiler ocaml-base-compiler ocaml base-domains ocaml
          ocaml-base-compiler
- base64 -> (problem)
    cohttp 6.0.0~beta2 requires >= 3.1.0
    opium 0.13.3 requires >= 2.0.0 & < 3.0.0
    Rejected candidates:
      base64.3.5.1: Incompatible with restriction: >= 2.0.0 & < 3.0.0
      base64.3.5.0: Incompatible with restriction: >= 2.0.0 & < 3.0.0
      base64.3.4.0: Incompatible with restriction: >= 2.0.0 & < 3.0.0
      base64.3.3.0: Incompatible with restriction: >= 2.0.0 & < 3.0.0
      base64.3.2.0: Incompatible with restriction: >= 2.0.0 & < 3.0.0
      ...
- fieldslib -> (problem)
    core v0.17.1 requires >= v0.17 & < v0.18
    opium 0.13.3 requires < 113.01.00
    Rejected candidates:
      fieldslib.v0.17.0: Incompatible with restriction: < 113.01.00
      fieldslib.v0.16.0: Incompatible with restriction: >= v0.17 & < v0.18
      fieldslib.v0.15.0: Incompatible with restriction: >= v0.17 & < v0.18
      fieldslib.v0.14.0: Incompatible with restriction: >= v0.17 & < v0.18
      fieldslib.v0.13.0: Incompatible with restriction: >= v0.17 & < v0.18
      ...
- 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~
- ocamlify -> (problem)
    Rejected candidates:
      ocamlify.0.0.1: Requires ocaml < 5.0
- ocamlmod -> (problem)
    Rejected candidates:
      ocamlmod.0.0.9: Requires ocaml < 5.0
      ocamlmod.0.0.8: Requires ocaml < 5.0
      ocamlmod.0.0.7: Requires ocaml < 4.06.0
      ocamlmod.0.0.4: Requires ocaml < 4.06.0
      ocamlmod.0.0.3: Requires ocaml < 4.06.0
- opium -> opium.0.13.3
    User requested = 0.13.3
- sexplib -> (problem)
    core v0.17.1 requires >= v0.17 & < v0.18
    opium 0.13.3 requires < 113.01.00
    Rejected candidates:
      sexplib.v0.17.0: Incompatible with restriction: < 113.01.00
      sexplib.v0.16.0: Incompatible with restriction: >= v0.17 & < v0.18
      sexplib.v0.15.1: Incompatible with restriction: >= v0.17 & < v0.18
      sexplib.v0.15.0: Incompatible with restriction: >= v0.17 & < v0.18
      sexplib.v0.14.0: Incompatible with restriction: >= v0.17 & < v0.18
      ...