Package libsvm

Failed to find a solution:

no platform:
2025-05-16 17:45.09 [INFO] Solving for ocaml-base-compiler,
                           libsvm, constraints ocaml-base-compiler<=5.3.0,
                           libsvm=0.9.2 using opam_repository_commit cf409d95af00ff822422bd76b657ed213b661401

2025-05-16 17:45.11 [INFO] base: eliminated all possibilities in 0.54 s

2025-05-16 17:45.11 [INFO] = base =

2025-05-16 17:45.11 [INFO] Can't find all required versions.
Selected: base.v0.17.2 base-threads.base base-unix.base
          base_bigstring.v0.17.0 base_quickcheck.v0.17.0 bin_prot.v0.17.0
          capitalization.v0.17.0 core.v0.17.1 csexp.1.5.2 dune.3.18.2
          dune-configurator.3.18.2 fieldslib.v0.17.0 gel.v0.17.0
          int_repr.v0.17.0 jane-street-headers.v0.17.0 jst-config.v0.17.0
          ocaml.5.5.0 ocaml-config.3 ocaml-options-vanilla.1
          ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8
          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_diff.v0.17.0
          ppx_disable_unused_warnings.v0.17.0 ppx_enumerate.v0.17.0
          ppx_expect.v0.17.2 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_jane.v0.17.2 sexplib0.v0.17.0
          splittable_random.v0.17.0 stdio.v0.17.0 time_now.v0.17.0
          typerep.v0.17.1 variantslib.v0.17.0 libsvm&ocaml-base-compiler
          ocaml-variants ocaml-base-compiler ocaml-base-compiler
- lacaml -> (problem)
    libsvm 0.9.2 requires < 8.0
    Rejected candidates:
      lacaml.11.1.1: Incompatible with restriction: < 8.0
      lacaml.11.1.0: Incompatible with restriction: < 8.0
      lacaml.11.0.10: Incompatible with restriction: < 8.0
      lacaml.11.0.8: Incompatible with restriction: < 8.0
      lacaml.11.0.7: Incompatible with restriction: < 8.0
      ...
- libsvm -> libsvm.0.9.2
    User requested = 0.9.2
- ocaml-base-compiler -> ocaml-base-compiler.5.3.0
    User requested <= 5.3.0
- ocaml-compiler -> (problem)
    ocaml-base-compiler 5.3.0 requires = 5.3.0
    Rejected candidates:
      ocaml-compiler.5.5: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.4: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.3.0: Requires ocaml = 5.3.0
      ocaml-compiler.5.3.0~rc1: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.3.0~beta2: Incompatible with restriction: = 5.3.0
      ...
- ocaml-variants -> (problem)
    Rejected candidates:
      ocaml-variants.5.5.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.1+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0+BER: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ...
- ppxlib -> (problem)
    base_quickcheck v0.17.0 requires >= 0.28.0 & < 0.36.0
    Rejected candidates:
      ppxlib.0.36.0: Incompatible with restriction: >= 0.28.0 & < 0.36.0
      ppxlib.0.35.0: Requires ocaml >= 4.08.0 & < 5.4.0
      ppxlib.0.34.0: Requires ocaml >= 4.04.1 & < 5.4.0
      ppxlib.0.33.0: Requires ocaml >= 4.04.1 & < 5.3.0
      ppxlib.0.32.1: Requires ocaml >= 4.04.1 & < 5.3.0
      ...
- sexplib -> (problem)
    core v0.17.1 requires >= v0.17 & < v0.18
    libsvm 0.9.2 requires not(>= 113.24.00)
    Rejected candidates:
      sexplib.v0.17.0: Incompatible with restriction: not(>= 113.24.00)
      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
      ...