✗ 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-libffi.2.0.0
          conf-libudev.1 conf-pkg-config.5 conf-which.1 csexp.1.5.2
          ctypes-foreign.0.24.0+ox dune.3.24.2 dune-configurator.3.24.2
          ocaml-config.3 ocaml-options-vanilla.1 ocamlbuild.0.16.1+ox
          ocamlfind.1.9.8+ox oxcaml.latest oxcaml-compiler.5.2.0minus39
          oxcaml-patch-guards.ox stdint.0.7.2 topkg.1.1.1+ox
          ocaml-variants&libudev ocaml ocaml-base-compiler
          ocaml-base-compiler base-domains ocaml-base-compiler
          oxcaml-angstrom-patches ocaml
- ctypes -> (problem)
    ctypes-foreign 0.24.0+ox requires = 0.24.0+ox
    libudev 0.2.1 requires >= 0.4.1 & < 0.21.0
    Rejected candidates:
      ctypes.0.24.0+ox: Incompatible with restriction: >= 0.4.1 & < 0.21.0
      ctypes.0.24.0: Incompatible with restriction: = 0.24.0+ox
      ctypes.0.23.0+ox: Incompatible with restriction: = 0.24.0+ox
      ctypes.0.23.0: Incompatible with restriction: = 0.24.0+ox
      ctypes.0.22.0: Incompatible with restriction: = 0.24.0+ox
      ctypes.0.21.1: Requires ocaml >= 4.03.0 & < 5.2
      ctypes.0.20.2: Requires ocaml >= 4.03.0 & < 5.2
      ctypes.0.20.1: Requires ocaml >= 4.03.0 & < 5.2
      ctypes.0.20.0: Requires ocaml >= 4.03.0 & < 5.2
      ctypes.0.19.1: Requires ocaml >= 4.03.0 & < 5.2
      ctypes.0.18.0: Requires ocaml >= 4.02.3 & < 5.2
      ctypes.0.17.1: Requires ocaml >= 4.02.3 & < 5.2
      ctypes.0.16.0: Requires ocaml >= 4.02.3 & < 5.2
      ctypes.0.15.1: Requires ocaml >= 4.02.3 & < 5.2
      ctypes.0.15.0: Requires ocaml >= 4.02.3 & < 5.2
      ctypes.0.14.0: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.13.1: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.13.0: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.12.1: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.12.0: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.11.5: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.11.4: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.11.3: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.11.2: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.11.1: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.11.0: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.10.5: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.10.4: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.10.3: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.10.2: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.10.1: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.10.0: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.9.5: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.9.4: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.9.3: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.9.2: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.9.0: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.8.2: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.8.1: Requires ocaml >= 4.01.0 & < 5.2
      ctypes.0.8.0: Requires ocaml >= 4.01.0 & < 5.2
- libudev -> libudev.0.2.1
    User requested = 0.2.1
- 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)

If you believe libudev.0.2.1 should be installable on Debian trixie, please comment on the ocurrent/ocaml-docs-ci issues: find issue · report issue