Package irmin-bench

Failed to find a solution:

no platform:
2024-01-29 14:48.12 [INFO] Solving for ocaml-base-compiler, ocaml,
                           irmin-bench using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 14:48.20 [INFO] base: eliminated all possibilities in 3.12 s

2024-01-29 14:48.20 [INFO] = base =

2024-01-29 14:48.20 [INFO] Can't find all required versions.
Selected: alcotest.1.7.0 angstrom.0.16.0 astring.0.8.5 base-bigarray.base
          base-bytes.base base-domains.base base-nnp.base base-threads.base
          base-unix.base base64.3.5.1 bheap.2.0.0 bigstringaf.0.9.1
          cmdliner.1.2.0 conf-gnuplot.0.1 cppo.1.6.9 csexp.1.5.2
          cstruct.6.2.0 digestif.1.1.4 dune.3.13.0 dune-configurator.3.13.0
          either.1.0.0 eqaf.0.9 fmt.0.9.0 index.1.4.1 jsonm.1.0.2 logs.0.7.0
          lwt.5.7.0 memtrace.0.2.3 metrics.0.4.1 metrics-unix.0.4.1
          ocaml-compiler-libs.v0.12.4 ocaml-config.3 ocaml-options-vanilla.1
          ocaml-syntax-shims.1.0.0 ocamlbuild.0.14.3 ocamlfind.1.9.6
          ocamlgraph.2.1.0 ocplib-endian.1.2 optint.0.3.0 ppx_derivers.1.2.1
          ppx_deriving.5.2.1 ppx_deriving_yojson.3.7.0 ppx_repr.0.4.0
          ppxlib.0.31.0 re.1.11.0 result.1.5 rusage.1.0.0
          semaphore-compat.1.0.1 seq.base sexplib0.v0.16.0 stdlib-shims.0.3.0
          stringext.1.6.0 topkg.1.0.7 uri.4.4.0 uuidm.0.9.8 uutf.1.0.3
          yojson.2.1.2 irmin-bench&ocaml&ocaml-base-compiler ocaml
          ocaml-base-compiler ocaml-base-compiler ocaml base-domains
          ocaml-base-compiler
- irmin -> irmin.2.7.1
    irmin-layers 2.7.1 requires = 2.7.1
- irmin-bench -> irmin-bench.2.7.1
    User requested = 2.7.1
- irmin-layers -> irmin-layers.2.7.1
    irmin-bench 2.7.1 requires = 2.7.1
- irmin-pack -> irmin-pack.2.7.1
    irmin-bench 2.7.1 requires = 2.7.1
- irmin-test -> irmin-test.2.7.1
    irmin-bench 2.7.1 requires = 2.7.1
- mtime -> mtime.1.4.0
    index 1.4.1 requires >= 1.1.0 & < 2.0.0
- ocaml -> ocaml.5.1.0
    User requested <= 5.1.0
- ocaml-base-compiler -> ocaml-base-compiler.5.1.0
    User requested >= 4.04.1
    ocaml-base-compiler|ocaml-variants|ocaml-system|dkml-base-compiler ocaml-base-compiler requires >= 5.1.0~ & < 5.1.1~
- ppx_irmin -> ppx_irmin.2.7.1
    irmin 2.7.1 requires = 2.7.1
- progress -> (problem)
    index 1.4.1 requires >= 0.2.1
    irmin-bench 2.7.1 requires = 1.1.0
    Rejected candidates:
      progress.0.2.2: Incompatible with restriction: = 1.1.0
      progress.0.2.1: Incompatible with restriction: = 1.1.0
      progress.0.2.0: Incompatible with restriction: >= 0.2.1
      progress.0.1.1: Incompatible with restriction: >= 0.2.1
      progress.0.1.0: Incompatible with restriction: >= 0.2.1
- repr -> repr.0.4.0
    index 1.4.1 requires >= 0.2.0 & < 0.5.0