Package erssical

Failed to find a solution:

no platform:
2024-09-12 08:16.59 [INFO] Solving for ocaml-base-compiler, ocaml,
                           erssical using opam_repository_commit 0329818dcfd3de1a722ea09eeeed94cd24caa375

2024-09-12 08:17.06 [INFO] base: eliminated all possibilities in 3.40 s

2024-09-12 08:17.06 [INFO] = base =

2024-09-12 08:17.06 [INFO] Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-nnp.base
          base-threads.base base-unix.base conf-libcurl.2 host-arch-x86_64.1
          ocaml-config.3 ocaml-options-vanilla.1 ocamlbuild.0.15.0
          ocamlfind.1.9.6 ocamlrss.2.2.2 ocurl.0.9.2 topkg.1.0.7 xmlm.1.4.0
          erssical&ocaml&ocaml-base-compiler ocaml-base-compiler
          ocaml-base-compiler system-mingw ocaml base-domains
          ocaml-base-compiler
- erssical -> erssical.0.1
    User requested = 0.1
- ocaml -> ocaml.5.1.1
    User requested <= 5.1.1
- ocaml-base-compiler -> ocaml-base-compiler.5.1.1
    User requested >= 4.04.1
    ocaml-base-compiler|ocaml-variants|ocaml-system|dkml-base-compiler ocaml-base-compiler requires >= 5.1.1~ & < 5.1.2~
- ocamlnet -> (problem)
    erssical 0.1 requires >= 3.6.5 & <= 3.7.7
    Rejected candidates:
      ocamlnet.4.1.9-2: Incompatible with restriction: >= 3.6.5 & <= 3.7.7
      ocamlnet.4.1.9-1: Incompatible with restriction: >= 3.6.5 & <= 3.7.7
      ocamlnet.4.1.9: Incompatible with restriction: >= 3.6.5 & <= 3.7.7
      ocamlnet.4.1.8: Incompatible with restriction: >= 3.6.5 & <= 3.7.7
      ocamlnet.4.1.7: Incompatible with restriction: >= 3.6.5 & <= 3.7.7
      ...
- system-mingw -> (problem)
    No usable implementations:
      system-mingw.1: Availability condition not satisfied
- xtmpl -> (problem)
    erssical 0.1 requires > 0.4 & <= 0.6
    Rejected candidates:
      xtmpl.0.19.0: Incompatible with restriction: > 0.4 & <= 0.6
      xtmpl.0.18.0: Incompatible with restriction: > 0.4 & <= 0.6
      xtmpl.0.17.0: Incompatible with restriction: > 0.4 & <= 0.6
      xtmpl.0.16.0: Incompatible with restriction: > 0.4 & <= 0.6
      xtmpl.0.15.0: Incompatible with restriction: > 0.4 & <= 0.6
      ...