Package git-unix

Failed to find a solution:

no platform:
2025-05-16 17:40.57 [INFO] Solving for ocaml-base-compiler,
                           git-unix, constraints ocaml-base-compiler<=5.3.0,
                           git-unix=2.1.3 using opam_repository_commit cf409d95af00ff822422bd76b657ed213b661401

2025-05-16 17:40.58 [INFO] base: eliminated all possibilities in 0.57 s

2025-05-16 17:40.58 [INFO] = base =

2025-05-16 17:40.58 [INFO] Can't find all required versions.
Selected: angstrom.0.16.1 asn1-combinators.0.3.2 astring.0.8.5 base.v0.17.2
          base-bytes.base base-threads.base base-unix.base base64.3.5.1
          bigarray-compat.1.1.0 bigstringaf.0.10.0 bos.0.2.1 ca-certs.1.0.1
          cohttp.6.1.0 cohttp-lwt-unix.5.1.0 conduit.8.0.0 conduit-lwt.8.0.0
          conduit-lwt-unix.8.0.0 conf-gmp.5 conf-gmp-powm-sec.4
          conf-pkg-config.4 cppo.1.8.0 csexp.1.5.2 digestif.1.3.0
          domain-name.0.4.1 dune.3.18.2 dune-configurator.3.18.2
          duration.0.2.1 eqaf.0.10 fmt.0.9.0 fpath.0.7.3 gmap.0.3.0
          http.6.1.0 ipaddr.5.6.0 ipaddr-sexp.5.6.0 kdf.1.0.0 logs.0.7.0
          lwt.5.9.1 macaddr.5.6.0 magic-mime.1.3.1 mirage-crypto.2.0.1
          mirage-crypto-ec.2.0.1 mirage-crypto-pk.2.0.1
          mirage-crypto-rng.2.0.1 mmap.1.2.0 ocaml.5.5.0 ocaml-config.3
          ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0
          ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8
          ocplib-endian.1.2 ohex.0.2.0 ppx_sexp_conv.v0.17.0
          ppxlib_jane.v0.17.2 ptime.1.2.0 re.1.12.0 rresult.0.7.0 seq.base
          sexplib0.v0.17.0 stringext.1.6.0 topkg.1.0.8 uri.4.4.0
          uri-sexp.4.4.0 x509.1.0.6 zarith.1.14 git-unix&ocaml-base-compiler
          ocaml-variants ocaml-base-compiler ocaml-base-compiler
- cmdliner -> cmdliner.1.0.4
    git-unix 2.1.3 requires < 1.1.0
- cohttp-lwt -> (problem)
    cohttp-lwt-unix 5.1.0 requires = 5.1.0
    Rejected candidates:
      cohttp-lwt.6.1.0: Incompatible with restriction: = 5.1.0
      cohttp-lwt.6.0.0: Requires http = 6.0.0
      cohttp-lwt.6.0.0~beta2: Requires http = 6.0.0~beta2
      cohttp-lwt.6.0.0~alpha2: Requires http = 6.0.0~alpha2
      cohttp-lwt.6.0.0~alpha1: Requires http = 6.0.0~alpha1
      ...
- git-http -> (problem)
    No usable implementations:
      git-http.2.1.3: Availability condition not satisfied
      git-http.2.1.2: Availability condition not satisfied
      git-http.2.1.1: Availability condition not satisfied
      git-http.2.1.0: Availability condition not satisfied
      git-http.2.0.0: Availability condition not satisfied
- git-unix -> git-unix.2.1.3
    User requested = 2.1.3
- mtime -> mtime.1.4.0
    git-unix 2.1.3 requires >= 1.0.0 & < 2.0.0
- ocaml-base-compiler -> ocaml-base-compiler.5.3.0
    User requested <= 5.3.0
- ocaml-compiler -> (problem)
    ocaml-base-compiler 5.3.0 requires = 5.3.0
    Rejected candidates:
      ocaml-compiler.5.5: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.4: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.3.0: Requires ocaml = 5.3.0
      ocaml-compiler.5.3.0~rc1: Incompatible with restriction: = 5.3.0
      ocaml-compiler.5.3.0~beta2: Incompatible with restriction: = 5.3.0
      ...
- ocaml-variants -> (problem)
    Rejected candidates:
      ocaml-variants.5.5.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.1+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.3.0+BER: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ...
- ppxlib -> (problem)
    ppx_sexp_conv v0.17.0 requires >= 0.28.0 & < 0.36.0
    Rejected candidates:
      ppxlib.0.36.0: Incompatible with restriction: >= 0.28.0 & < 0.36.0
      ppxlib.0.35.0: Requires ocaml >= 4.08.0 & < 5.4.0
      ppxlib.0.34.0: Requires ocaml >= 4.04.1 & < 5.4.0
      ppxlib.0.33.0: Requires ocaml >= 4.04.1 & < 5.3.0
      ppxlib.0.32.1: Requires ocaml >= 4.04.1 & < 5.3.0
      ...