Package coinst

Failed to find a solution:

no platform:
2024-01-29 15:02.53 [INFO] Solving for ocaml-base-compiler, ocaml,
                           coinst using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 15:02.59 [INFO] base: eliminated all possibilities in 2.99 s

2024-01-29 15:02.59 [INFO] = base =

2024-01-29 15:02.59 [INFO] Can't find all required versions.
Selected: base-bytes.backport base-no-ppx.base base-ocamlbuild.base
          base-threads.base base-unix.base camlp4.4.02.0-1modular-implicits
          cmdliner.1.0.2 conf-which.1 cppo.1.6.5 cudf.0.9-1 dune.3.13.0
          extlib.1.7.8 js_of_ocaml.2.7 ocaml-config.3 ocamlfind.1.9.6
          topkg.1.0.0 coinst&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler base-no-ppx base-no-ppx extlib
- base64 -> base64.2.3.0
    js_of_ocaml 2.7 requires >= 2.0.0 & < 3.0.0
- coinst -> coinst.1.9.1
    User requested = 1.9.1
- jbuilder -> (problem)
    cppo 1.6.5 requires >= 1.0+beta17
    dune 3.13.0 requires not(= transition)
    Rejected candidates:
      jbuilder.transition: Incompatible with restriction: not(= transition)
      jbuilder.1.0+beta20.2: Requires ocaml >= 4.02.3 & < 5.0
      jbuilder.1.0+beta20.1: Requires ocaml >= 4.02.3 & < 5.0
      jbuilder.1.0+beta20: Requires ocaml >= 4.02.3 & < 4.08.0
      jbuilder.1.0+beta19.1: Requires ocaml >= 4.02.3 & < 4.08.0
      ...
- lwt -> lwt.2.6.0
    js_of_ocaml 2.7 requires >= 2.4.4 & < 4.0.0
- menhir -> menhir.20140422
    js_of_ocaml 2.7 requires < 20200525
- ocaml -> ocaml.4.01.0
    User requested <= 5.1.0
    base-bytes backport requires < 4.02.0
- ocaml-base-compiler -> (problem)
    User requested >= 4.04.1
    Rejected candidates:
      ocaml-base-compiler.5.1.1: Requires ocaml = 5.1.1
      ocaml-base-compiler.5.1.1~rc1: Requires ocaml = 5.1.1
      ocaml-base-compiler.5.1.0: Requires ocaml = 5.1.0
      ocaml-base-compiler.5.1.0~rc3: Requires ocaml = 5.1.0
      ocaml-base-compiler.5.1.0~rc2: Requires ocaml = 5.1.0
      ...
- ocaml-variants -> (problem)
    camlp4 4.02.0-1modular-implicits requires = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
    Rejected candidates:
      ocaml-variants.5.3.0+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.2.0+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.1.2+trunk: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.1.1+tsan: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ocaml-variants.5.1.1+options: Incompatible with restriction: = 4.02.0+modular-implicits | = 4.02.1+modular-implicits-ber
      ...
- ocamlbuild -> ocamlbuild.0
    lwt 2.6.0 requires not(= 0.9.0)
    menhir 20140422 requires < 0.9.1
- result -> result.1.4
    cmdliner 1.0.2 requires < 1.5
- ocaml|ocaml&ocamlfind-secondary -> (problem)
    Rejected candidates:
      ocaml: Requires ocaml >= 4.08
      ocaml&ocamlfind-secondary: Requires ocaml >= 4.02 & < 4.08~~