✗ 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 basement.v0.18~preview.130.106+341
          bitstring.5.0.2 cairo2.0.6.5 conf-autoconf.1 conf-cairo.1
          conf-pkg-config.5 conf-which.1 csexp.1.5.2 dune.3.24.2
          dune-configurator.3.24.2 ocaml-compiler-libs.v0.17.0+ox
          ocaml-config.3 ocaml-options-vanilla.1 ocamlfind.1.9.8+ox
          oxcaml.latest oxcaml-patch-guards.ox ppx_bitstring.5.0.2
          ppx_derivers.1.2.1 ppxlib.0.39.0
          sexp_type.v0.18~preview.130.106+341
          sexplib0.v0.18~preview.130.106+341 stdlib-shims.0.3.0
          ocaml-variants&mlpost ocaml ocaml-base-compiler ocaml-base-compiler
          base-domains ocaml-base-compiler oxcaml-angstrom-patches ocaml
- mlpost -> mlpost.0.9
    User requested = 0.9
- 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-migrate-parsetree -> (problem)
    mlpost 0.9 requires < 2.0.0
    Rejected candidates:
      ocaml-migrate-parsetree.2.4.0: Incompatible with restriction: < 2.0.0
      ocaml-migrate-parsetree.2.3.0: Incompatible with restriction: < 2.0.0
      ocaml-migrate-parsetree.2.2.0: Incompatible with restriction: < 2.0.0
      ocaml-migrate-parsetree.2.1.0: Incompatible with restriction: < 2.0.0
      ocaml-migrate-parsetree.2.0.0: Incompatible with restriction: < 2.0.0
      ocaml-migrate-parsetree.1.8.0: Requires ocaml >= 4.02.3 & < 4.13
      ocaml-migrate-parsetree.1.7.3: Requires ocaml >= 4.02.3 & < 4.12
- 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)
- oxcaml-compiler -> oxcaml-compiler.5.2.0minus39
    basement v0.18~preview.130.106+341 requires not(< 5.2.0minus39 | >= 5.4.0-ox1)

If you believe mlpost.0.9 should be installable on Debian trixie, please comment on the ocurrent/ocaml-docs-ci issues: find issue · report issue