Package cca

Failed to find a solution:

no platform:
2025-05-16 17:41.51 [INFO] Solving for ocaml-base-compiler,
                           cca, constraints ocaml-base-compiler<=5.3.0,
                           cca=0.5 using opam_repository_commit cf409d95af00ff822422bd76b657ed213b661401

2025-05-16 17:41.53 [INFO] base: eliminated all possibilities in 0.71 s

2025-05-16 17:41.53 [INFO] = base =

2025-05-16 17:41.53 [INFO] Can't find all required versions.
Selected: angstrom.0.16.1 asn1-combinators.0.3.2 astring.0.8.5 awa.0.1.0
          base.v0.17.2 base-bytes.base base-threads.base base-unix.base
          base64.3.5.1 bigarray-compat.1.1.0 bos.0.2.1 camlzip.1.13
          carton-git.0.4.3 checkseum.0.5.2 conf-gmp.5 conf-gmp-powm-sec.4
          conf-pkg-config.4 conf-zlib.1 cppo.1.8.0 cryptokit.1.20 csexp.1.5.2
          cstruct-sexp.6.0.1 cstruct-unix.6.0.1 csv.2.4 digestif.1.3.0
          domain-name.0.4.1 dune.3.18.2 dune-configurator.3.18.2
          duration.0.2.1 emile.1.1 encore.0.8.1 eqaf.0.10 fmt.0.9.0
          fpath.0.7.3 gmap.0.3.0 hxd.0.3.1 ipaddr.5.6.0 kdf.1.0.0 ke.0.6
          logs.0.7.0 lwt.5.9.1 macaddr.5.6.0 menhir.20240715
          menhirCST.20240715 menhirLib.20240715 menhirSdk.20240715
          mimic.0.0.9 mirage-clock.4.2.0 mirage-clock-unix.4.2.0
          mirage-flow.5.0.0 mirage-kv.6.1.1 mirage-no-solo5.1 mirage-no-xen.1
          mmap.1.2.0 num.1.5-1 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
          ocamlgraph.2.2.0 ocplib-endian.1.2 ohex.0.2.0 optint.0.3.0
          parsexp.v0.17.0 pecu.0.7 ppx_cstruct.6.0.1 ppx_sexp_conv.v0.17.0
          ppxlib_jane.v0.17.2 psq.0.2.1 ptime.1.2.0 pxp.1.2.9 result.1.5
          rresult.0.7.0 seq.base sexplib.v0.17.0 sexplib0.v0.17.0
          stdlib-shims.0.3.0 stringext.1.6.0 topkg.1.0.8 uri.4.4.0 uutf.1.0.3
          x509.1.0.6 zarith.1.14 cca&ocaml-base-compiler ocaml-variants
          ocaml-base-compiler mirage-no-solo5&mirage-no-xen
          ocaml-base-compiler
- awa-mirage -> (problem)
    Rejected candidates:
      awa-mirage.0.5.1: Requires awa = 0.5.1
      awa-mirage.0.5.0: Requires awa = 0.5.0
      awa-mirage.0.4.0: Requires awa = 0.4.0
      awa-mirage.0.3.1: Requires awa = 0.3.1
      awa-mirage.0.3.0: Requires awa = 0.3.0
      ...
- bigstringaf -> bigstringaf.0.8.0
    git 3.6.0 requires < 0.9.0
- ca-certs-nss -> (problem)
    Rejected candidates:
      ca-certs-nss.3.108-1: Requires cmdliner >= 1.1.0
      ca-certs-nss.3.108: Requires cmdliner >= 1.1.0
      ca-certs-nss.3.107: Requires cmdliner >= 1.1.0
      ca-certs-nss.3.104: Requires cmdliner >= 1.1.0
      ca-certs-nss.3.103: Requires cmdliner >= 1.1.0
      ...
- carton -> (problem)
    Rejected candidates:
      carton.1.0.0: Requires decompress >= 1.5.0
      carton.0.7.2: Requires decompress >= 1.4.3
      carton.0.7.1: Requires decompress >= 1.4.3
      carton.0.7.0: Requires decompress >= 1.4.3
      carton.0.6.0: Requires decompress >= 1.4.3
      ...
- carton-lwt -> carton-lwt.0.4.3
    carton-git 0.4.3 requires = 0.4.3
- cca -> cca.0.5
    User requested = 0.5
- cmdliner -> cmdliner.1.0.4
    git-unix 3.6.0 requires >= 1.0.4 & < 1.1.0
- cstruct -> cstruct.6.0.1
    cstruct-sexp 6.0.1 requires = 6.0.1
- decompress -> decompress.1.4.2
    git 3.6.0 requires >= 1.4.0 & < 1.4.3
- git -> git.3.6.0
    git-unix 3.6.0 requires = 3.6.0
- git-cohttp-unix -> (problem)
    No usable implementations:
      git-cohttp-unix.3.6.0: Availability condition not satisfied
      git-cohttp-unix.3.5.0: Availability condition not satisfied
      git-cohttp-unix.3.4.0: Availability condition not satisfied
      git-cohttp-unix.3.3.3: Availability condition not satisfied
      git-cohttp-unix.3.3.2: Availability condition not satisfied
      ...
- git-unix -> git-unix.3.6.0
    cca 0.5 requires >= 3.3.0 & < 3.7.0
- hkdf -> hkdf.1.0.4
    tls 0.17.5 requires < 2.0.0
- mirage-crypto -> (problem)
    awa 0.1.0 requires >= 0.8.1 & < 1.0.0
    kdf 1.0.0 requires >= 1.0.0
    Rejected candidates:
      mirage-crypto.2.0.1: Incompatible with restriction: >= 0.8.1 & < 1.0.0
      mirage-crypto.2.0.0: Incompatible with restriction: >= 0.8.1 & < 1.0.0
      mirage-crypto.1.2.0: Incompatible with restriction: >= 0.8.1 & < 1.0.0
      mirage-crypto.1.1.0: Incompatible with restriction: >= 0.8.1 & < 1.0.0
      mirage-crypto.0.11.3: Incompatible with restriction: >= 1.0.0
      ...
- mirage-crypto-ec -> mirage-crypto-ec.0.10.7
    awa 0.1.0 requires >= 0.10.0 & < 1.0.0
- mirage-crypto-pk -> mirage-crypto-pk.0.10.7
    awa 0.1.0 requires < 1.0.0
- mirage-crypto-rng -> mirage-crypto-rng.0.10.7
    awa 0.1.0 requires < 0.11.0
- mtime -> mtime.1.4.0
    cca 0.5 requires < 2.0
- 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
      ...
- ocamlnet -> (problem)
    Rejected candidates:
      ocamlnet.4.1.9-2: Requires ocaml >= 4.02 & < 5
      ocamlnet.4.1.9-1: Requires ocaml >= 4.02 & < 5
      ocamlnet.4.1.9: Requires ocaml >= 4.02 & < 5
      ocamlnet.4.1.8: Requires ocaml >= 4.02 & < 5
      ocamlnet.4.1.7: Requires ocaml >= 4.02 & < 4.11.0
      ...
- ppxlib -> (problem)
    ppx_cstruct 6.0.1 requires >= 0.16.0
    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
      ...
- tcpip -> (problem)
    git-unix 3.6.0 requires >= 6.0.0
    Rejected candidates:
      tcpip.9.0.1: Requires cstruct >= 6.2.0
      tcpip.9.0.0: Requires mirage-crypto-rng >= 1.2.0
      tcpip.8.2.0: Requires cmdliner >= 1.1.0
      tcpip.8.1.0: Requires cmdliner >= 1.1.0
      tcpip.8.0.2: Requires cmdliner >= 1.1.0
      ...
- tls -> tls.0.17.5
    git-unix 3.6.0 requires >= 0.14.0 & < 1.0.0
- tls-mirage -> tls-mirage.0.17.5
    git-unix 3.6.0 requires >= 0.14.0 & < 1.0.0
- ulex -> (problem)
    Rejected candidates:
      ulex.1.2: Requires ocaml < 5.0
- uuidm -> (problem)
    Rejected candidates:
      uuidm.0.9.10: Requires cmdliner not(< 1.3.0)
      uuidm.0.9.9: Requires cmdliner not(< 1.3.0)
      uuidm.0.9.8: Requires cmdliner not(< 1.1.0)
      uuidm.0.9.7: Requires ocaml >= 4.03.0 & < 5.0
      uuidm.0.9.6: Requires ocaml >= 4.01.0 & < 5.0
- volt -> (problem)
    Rejected candidates:
      volt.1.4: Requires ocaml >= 4.03 & < 5.0