Package ojs-base

Failed to find a solution:

no platform:
2024-01-29 15:10.22 [INFO] Solving for ocaml-base-compiler, ocaml,
                           ojs-base using opam_repository_commit 251c5edf2ecdd2541c324dacb931c3606ee71eeb

2024-01-29 15:10.28 [INFO] base: eliminated all possibilities in 2.85 s

2024-01-29 15:10.28 [INFO] = base =

2024-01-29 15:10.28 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-bytes.base base-domains.base base-nnp.base
          base-threads.base base-unix.base conf-gmp.4 conf-gmp-powm-sec.3
          conf-libssl.4 conf-pkg-config.3 conf-zlib.1 cppo.1.6.9
          cryptokit.1.19 csexp.1.5.2 dune.3.13.0 dune-configurator.3.13.0
          lwt.5.7.0 ocaml-config.3 ocaml-options-vanilla.1 ocamlbuild.0.14.3
          ocamlfind.1.9.6 ocplib-endian.1.2 ssl.0.7.0 zarith.1.13
          ojs-base&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler ocaml base-domains ocaml ocaml-base-compiler
- cohttp -> (problem)
    websocket 0.8.1 requires >= 0.10.0 & < 0.12.0
    Rejected candidates:
      cohttp.6.0.0~beta2: Incompatible with restriction: >= 0.10.0 & < 0.12.0
      cohttp.6.0.0~alpha2: Incompatible with restriction: >= 0.10.0 & < 0.12.0
      cohttp.6.0.0~alpha1: Incompatible with restriction: >= 0.10.0 & < 0.12.0
      cohttp.6.0.0~alpha0: Incompatible with restriction: >= 0.10.0 & < 0.12.0
      cohttp.5.3.1: Incompatible with restriction: >= 0.10.0 & < 0.12.0
      ...
- js_of_ocaml -> (problem)
    ojs-base 0.2.0 requires >= 2.4.0 & < 3.0
    Rejected candidates:
      js_of_ocaml.5.6.0: Incompatible with restriction: >= 2.4.0 & < 3.0
      js_of_ocaml.5.5.2: Incompatible with restriction: >= 2.4.0 & < 3.0
      js_of_ocaml.5.4.0: Incompatible with restriction: >= 2.4.0 & < 3.0
      js_of_ocaml.5.3.0: Incompatible with restriction: >= 2.4.0 & < 3.0
      js_of_ocaml.5.2.0: Incompatible with restriction: >= 2.4.0 & < 3.0
      ...
- 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~
- ojs-base -> ojs-base.0.2.0
    User requested = 0.2.0
- optcomp -> (problem)
    Rejected candidates:
      optcomp.1.6: Requires ocaml >= 3.12 & < 4.06.0
      optcomp.1.5: Requires ocaml >= 3.12 & < 4.06.0
      optcomp.1.4: Requires ocaml < 4.06.0
- ppx_deriving_yojson -> (problem)
    ojs-base 0.2.0 requires = 2.0
    Rejected candidates:
      ppx_deriving_yojson.3.7.0: Incompatible with restriction: = 2.0
      ppx_deriving_yojson.3.6.1: Incompatible with restriction: = 2.0
      ppx_deriving_yojson.3.6.0: Incompatible with restriction: = 2.0
      ppx_deriving_yojson.3.5.3: Incompatible with restriction: = 2.0
      ppx_deriving_yojson.3.5.2: Incompatible with restriction: = 2.0
      ...
- websocket -> websocket.0.8.1
    ojs-base 0.2.0 requires = 0.8.1
- yojson -> (problem)
    ojs-base 0.2.0 requires = 1.1.8
    Rejected candidates:
      yojson.2.1.2: Incompatible with restriction: = 1.1.8
      yojson.2.1.1: Incompatible with restriction: = 1.1.8
      yojson.2.1.0: Incompatible with restriction: = 1.1.8
      yojson.2.0.2: Incompatible with restriction: = 1.1.8
      yojson.2.0.1: Incompatible with restriction: = 1.1.8
      ...