Package crs

Failed to find a solution:

no platform:
2025-07-10 13:46.37 [INFO] Solving for ocaml-base-compiler, ocaml,
                           crs using opam_repository_commit 64169c3d1d6774ef4ce0fcc471269bb09cd215f5

2025-07-10 13:46.38 [INFO] base: eliminated all possibilities in 0.19 s

2025-07-10 13:46.38 [INFO] = base =

2025-07-10 13:46.38 [INFO] Can't find all required versions.
Selected: astring.0.8.5 base.v0.17.3 base-bigarray.base base-domains.base
          base-effects.base base-nnp.base base-threads.base base-unix.base
          cmdlang.0.0.9 cmdlang-to-cmdliner.0.0.9 cmdliner.1.3.0 csexp.1.5.2
          dune.3.19.1 dune-configurator.3.19.1 dyn.3.19.1 file-rewriter.0.0.3
          fmt.0.10.0 fpath.0.7.3 fpath-base.0.3.1 fpath-sexp0.0.3.1 gen.1.1
          loc.0.2.2 logs.0.9.0 ocaml-compiler-libs.v0.17.0
          ocaml-options-vanilla.1 ocaml_intrinsics_kernel.v0.17.1
          ocamlbuild.0.16.1 ocamlfind.1.9.8 ordering.3.19.1 pageantty.0.0.2
          parsexp.v0.17.0 pp.2.0.0 pplumbing.0.0.14 ppx_compare.v0.17.0
          ppx_derivers.1.2.1 ppx_enumerate.v0.17.0 ppx_hash.v0.17.0
          ppx_here.v0.17.0 ppx_let.v0.17.1 ppx_sexp_conv.v0.17.1
          ppx_sexp_value.v0.17.0 ppx_yojson_conv.v0.17.0
          ppx_yojson_conv_lib.v0.17.0 ppxlib.0.37.0~5.4preview
          ppxlib_jane.v0.17.4 re.1.13.2 sedlex.3.6 seq.base sexplib0.v0.17.0
          spawn.v0.17.0 stdio.v0.17.0 stdlib-shims.0.3.0 stdune.3.19.1
          topkg.1.0.8 volgo.0.0.18 volgo-base.0.0.18 volgo-git-backend.0.0.18
          volgo-git-unix.0.0.18 volgo-hg-backend.0.0.18 volgo-hg-unix.0.0.18
          yojson.3.0.0 yojson-five.3.0.0 crs&ocaml&ocaml-base-compiler
          system-mingw system-mingw|system-msvc&winpthreads ocaml
          base-domains ocaml-variants ocaml-base-compiler
- crs -> crs.0.0.20250705
    User requested = 0.0.20250705
- ocaml -> (problem)
    User requested <= 5.0.0
    astring 0.8.5 requires >= 4.05.0
    base v0.17.3 requires >= 5.1.0
    Rejected candidates:
      ocaml.5.0.0: Incompatible with restriction: >= 5.1.0
      ocaml.4.14.3: Incompatible with restriction: >= 5.1.0
      ocaml.4.14.2: Incompatible with restriction: >= 5.1.0
      ocaml.4.14.1: Incompatible with restriction: >= 5.1.0
      ocaml.4.14.0: Incompatible with restriction: >= 5.1.0
      ...
- ocaml-base-compiler -> ocaml-base-compiler.5.4.0~alpha1
    User requested >= 4.04.1
- ocaml-compiler -> ocaml-compiler.5.4.0~alpha1
    ocaml-base-compiler 5.4.0~alpha1 requires = 5.4.0~alpha1
- 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.5.4.0~alpha1+options: 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
      ...
- ppx_js_style -> (problem)
    Rejected candidates:
      ppx_js_style.v0.17.0: Requires ppxlib >= 0.28.0 & < 0.36.0
      ppx_js_style.v0.16.0: Requires base >= v0.16 & < v0.17
      ppx_js_style.v0.15.0: Requires base >= v0.15 & < v0.16
      ppx_js_style.v0.14.1: Requires base >= v0.14 & < v0.15
      ppx_js_style.v0.14.0: Requires base >= v0.14 & < v0.15
      ...
- system-mingw -> (problem)
    No usable implementations:
      system-mingw.1: Availability condition not satisfied