Package ciao_lwt

Failed to find a solution:

no platform:
2026-03-03 11:03.46 [INFO] Solving for ocaml-base-compiler,
                           ciao_lwt, constraints ocaml-base-compiler<=5.4.0,
                           ciao_lwt=0.1 using opam_repository_commit 344134be6e4a378dcde17e96d4f521174aa1f3f8

2026-03-03 11:04.26 [INFO] base: eliminated all possibilities in 0.25 s

2026-03-03 11:04.26 [INFO] = base =

2026-03-03 11:04.26 [INFO] Can't find all required versions.
Selected: astring.0.8.5 base.v0.17.3 base-bigarray.base base-bytes.base
          base-domains.base base-effects.base base-nnp.base base-threads.base
          base-unix.base base64.3.5.2 bigstring.0.3 bigstringaf.0.10.0
          bos.0.2.1 brr.0.0.8 camlp-streams.5.0.1 checkseum.0.5.2
          cmarkit.0.3.0 cppo.1.8.0 crunch.4.0.0 csexp.1.5.2 cstruct.6.2.0
          decompress.1.5.3 domain-local-await.1.0.1 dune.3.21.1
          dune-build-info.3.21.1 dune-configurator.3.21.1 eio.1.3
          eio_linux.1.3 eio_main.1.3 eio_posix.1.3 either.1.0.0 fix.20250919
          fmt.0.11.0 fpath.0.7.3 hmap.0.8.1 iomux.0.4 js_of_ocaml.6.3.2
          js_of_ocaml-toplevel.6.3.2 jsonm.1.0.2 logs.0.10.0 lwt.6.1.1
          lwt-dllist.1.1.0 menhir.20260209 menhirCST.20260209
          menhirGLR.20260209 menhirLib.20260209 menhirSdk.20260209
          merlin-lib.5.7-505~preview mtime.2.1.0 num.1.6
          ocaml-compiler-libs.v0.17.0 ocaml-options-vanilla.1
          ocaml-version.4.0.3 ocaml_intrinsics_kernel.v0.17.1
          ocamlbuild.0.16.1 ocamlfind.1.9.8 ocamlgraph.2.2.0 ocp-indent.1.9.0
          ocplib-endian.1.2 odig.0.0.9 odoc.3.1.0 odoc-driver.3.1.0
          odoc-md.3.1.0 odoc-parser.3.1.0 opam-file-format.2.2.0 optint.0.3.0
          parsexp.v0.17.0 patch.3.1.0 ppx_blob.0.9.0 ppx_derivers.1.2.1
          ppx_sexp_conv.v0.17.1 ppxlib.0.37.0 ppxlib_jane.v0.17.4
          progress.0.5.0 psq.0.2.1 ptime.1.2.0 re.1.14.0 result.1.5
          rresult.0.7.0 seq.base sexplib.v0.17.0 sexplib0.v0.17.0 sha.1.15.4
          sherlodoc.3.1.0 stdio.v0.17.0 stdlib-shims.0.3.0 swhid_core.0.1
          terminal.0.5.0 thread-table.1.0.0 topkg.1.1.1 tyxml.4.6.0
          uring.2.7.0 uucp.17.0.0 uuseg.17.0.0 uutf.1.0.4 yojson.3.0.0
          ciao_lwt&ocaml-base-compiler system-mingw
          system-mingw|system-msvc&winpthreads ocaml base-domains
          ocaml-variants ocaml ocaml-base-compiler
- b0 -> b0.0.0.5
    odig 0.0.9 requires = 0.0.5
- ciao_lwt -> ciao_lwt.0.1
    User requested = 0.1
- cmdliner -> cmdliner.1.3.0
    ciao_lwt 0.1 requires >= 1.1.0 & < 2.0.0
- js_of_ocaml-compiler -> (problem)
    brr 0.0.8 requires >= 6.0.1
    js_of_ocaml 6.3.2 requires = 6.3.2
    Rejected candidates:
      js_of_ocaml-compiler.6.3.2: Requires cmdliner >= 2.0
      js_of_ocaml-compiler.6.3.0: Incompatible with restriction: = 6.3.2
      js_of_ocaml-compiler.6.2.0: Incompatible with restriction: = 6.3.2
      js_of_ocaml-compiler.6.1.1: Incompatible with restriction: = 6.3.2
      js_of_ocaml-compiler.6.1.0: Incompatible with restriction: = 6.3.2
      ...
- ocaml -> (problem)
    astring 0.8.5 requires >= 4.05.0
    b0 0.0.5 requires >= 4.08.0
    base v0.17.3 requires >= 5.1.0
    ciao_lwt 0.1 requires = 5.2
    Rejected candidates:
      ocaml.5.6.0: Incompatible with restriction: = 5.2
      ocaml.5.5.0: Incompatible with restriction: = 5.2
      ocaml.5.4.2: Incompatible with restriction: = 5.2
      ocaml.5.4.1: Incompatible with restriction: = 5.2
      ocaml.5.4.0: Incompatible with restriction: = 5.2
      ...
- ocaml-base-compiler -> ocaml-base-compiler.5.4.0
    User requested <= 5.4.0
- ocaml-compiler -> ocaml-compiler.5.4.0
    ocaml-base-compiler 5.4.0 requires = 5.4.0
- ocaml-variants -> (problem)
    Rejected candidates:
      ocaml-variants.5.6.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.5.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.5.0~alpha1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.2+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ...
- opam-core -> opam-core.2.4.1
    opam-format 2.4.1 requires = 2.4.1
- opam-format -> opam-format.2.4.1
    odoc-driver 3.1.0 requires >= 2.1.0 & < 2.5.0~~
- system-mingw -> (problem)
    No usable implementations:
      system-mingw.1: Availability condition not satisfied