✗ Solve failed — no dependency solution was found for this package version on Debian trixie, so it was never built. The solver's explanation:

Can't find all required versions.
Selected: base-bigarray.base base-domains.base base-nnp.base
          base-threads.base base-unix.base conf-autoconf.1 conf-gmp.5
          conf-pkg-config.5 conf-which.1 csexp.1.5.2 ctypes.0.24.0+ox
          dune.3.24.2 dune-configurator.3.24.2 integers.0.8.0 ocaml-config.3
          ocaml-options-vanilla.1 ocamlfind.1.9.8+ox oxcaml.latest
          oxcaml-compiler.5.2.0minus39 oxcaml-patch-guards.ox
          stdlib-shims.0.3.0 zarith.1.14 ocaml-variants&ctypes-zarith ocaml
          ocaml-base-compiler ocaml-base-compiler base-domains
          ocaml-base-compiler oxcaml-angstrom-patches ocaml
- ctypes-zarith -> ctypes-zarith.0.2.0
    User requested = 0.2.0
- ocaml -> ocaml.5.2.0
    User requested = 5.2.0
- ocaml-base-compiler -> (problem)
    Rejected candidates:
      ocaml-base-compiler.5.5.1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.5.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.5.0~rc1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.5.0~beta1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.5.0~alpha3: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.5.0~alpha1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.4.1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.4.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.4.0~rc1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.4.0~beta2: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.4.0~beta1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.4.0~alpha1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.3.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.2.1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.2.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.1.1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.1.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.5.0.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.14.4: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.14.3: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.14.2: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.14.2~rc1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.14.1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.14.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.13.1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.13.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.12.1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.12.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.11.2: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.11.1: In same conflict class (ocaml-core-compiler) as ocaml-variants
      ocaml-base-compiler.4.11.0: In same conflict class (ocaml-core-compiler) as ocaml-variants
- ocaml-variants -> ocaml-variants.5.2.0+ox
    User requested = 5.2.0+ox
- oxcaml-angstrom-patches -> (problem)
    Rejected candidates:
      oxcaml-angstrom-patches.enabled: Requires oxcaml-compiler not(< 5.4.0-ox1)
- ppx_cstubs -> (problem)
    Rejected candidates:
      ppx_cstubs.0.7.0: Requires ocaml >= 4.04.2 & < 5.1
      ppx_cstubs.0.6.1.2: Requires ctypes >= 0.13.0 & < 0.20
      ppx_cstubs.0.6.1.1: Requires ctypes >= 0.13.0 & < 0.19
      ppx_cstubs.0.6.1: Requires ctypes >= 0.13.0 & < 0.18
      ppx_cstubs.0.6.0.1: Requires ctypes >= 0.13.0 & < 0.19
      ppx_cstubs.0.6.0: Requires ctypes >= 0.13.0 & < 0.18
      ppx_cstubs.0.5.1: Requires ctypes >= 0.13.0 & < 0.21
      ppx_cstubs.0.5.0.2: Requires ctypes >= 0.13.0 & < 0.20
      ppx_cstubs.0.5.0.1: Requires ctypes >= 0.13.0 & < 0.19
      ppx_cstubs.0.5.0: Requires ctypes >= 0.13.0 & < 0.18
      ppx_cstubs.0.4.3: Requires ctypes >= 0.13.0 & < 0.18
      ppx_cstubs.0.4.1: Requires ctypes >= 0.13.0 & < 0.18

If you believe ctypes-zarith.0.2.0 should be installable on Debian trixie, please comment on the ocurrent/ocaml-docs-ci issues: find issue · report issue