✗ 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: angstrom.0.16.1 asn1-combinators.0.3.3 astring.0.8.5
          base-bigarray.base base-bytes.base base-domains.base base-nnp.base
          base-threads.base base-unix.base base64.3.5.2 bigstringaf.0.10.0
          bos.0.3.0 bstr.0.1.1 ca-certs.1.0.3 cmdliner.2.1.1 coin.0.1.5
          conf-autoconf.1 conf-gmp.5 conf-gmp-powm-sec.4 conf-pkg-config.5
          conf-which.1 containers.3.18 cppo.1.8.0 csexp.1.5.2 cstruct.6.3.0
          digestif.1.3.1 domain-name.0.5.0 dune.3.24.2
          dune-configurator.3.24.2 duration.0.3.1 either.1.0.0 emile.1.1
          eqaf.0.10 fmt.0.11.0 fpath.0.7.3 gmap.0.3.0 hxd.0.5.0 ipaddr.5.6.2
          kdf.1.1.2 ke.0.6 logs.0.10.0 lwt.6.1.2 macaddr.5.6.2
          mirage-crypto.2.4.1 mirage-crypto-ec.2.4.1 mirage-crypto-pk.2.4.1
          mirage-crypto-rng.2.4.1 mrmime.0.8.0 ocaml-config.3
          ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0
          ocamlbuild.0.16.1+ox ocamlfind.1.9.8+ox ocplib-endian.1.2
          ohex.0.2.0 oxcaml.latest oxcaml-compiler.5.2.0minus39
          oxcaml-patch-guards.ox pecu.0.7 prettym.0.0.5 ptime.1.2.0
          rosetta.0.4.0 rresult.0.7.0 sendmail.0.12.1 tls.2.1.3 tls-lwt.2.1.3
          topkg.1.1.1+ox unstrctrd.0.5 uutf.1.0.4+ox uuuu.0.4.0 x509.1.2.0
          yuscii.0.3.0 zarith.1.14 ocaml-variants&letters ocaml
          ocaml-base-compiler ocaml-base-compiler base-domains
          ocaml-base-compiler oxcaml-angstrom-patches ocaml
- colombe -> colombe.0.12.1
    letters 0.4.0 requires >= 0.11.0 & < 0.13.0
- letters -> letters.0.4.0
    User requested = 0.4.0
- 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 angstrom = 0.16.1+ox

If you believe letters.0.4.0 should be installable on Debian trixie, please comment on the ocurrent/ocaml-docs-ci issues: find issue · report issue