✗ 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-bytes.base base-domains.base
          base-effects.base base-nnp.base base-threads.base base-unix.base
          base_bigstring.v0.17.0 base_quickcheck.v0.17.1 bin_prot.v0.17.0-1
          capitalization.v0.17.0 compiler-cloning.enabled conf-capnproto.2
          core.v0.17.2 core_kernel.v0.17.0 cppo.1.8.0 csexp.1.5.2
          dune-configurator.3.24.1 extunix.0.4.4 fieldslib.v0.17.0
          gel.v0.17.0 int_repr.v0.17.0 jane-street-headers.v0.17.0
          jbuilder.transition jst-config.v0.17.0 num.1.6
          ocaml-compiler-libs.v0.17.0 ocaml-options-vanilla.1
          ocamlfind.1.9.9~preview ocplib-endian.1.2 parsexp.v0.17.0
          ppx_assert.v0.17.0 ppx_base.v0.17.0 ppx_bench.v0.17.1
          ppx_bin_prot.v0.17.1 ppx_cold.v0.17.0 ppx_compare.v0.17.0
          ppx_custom_printf.v0.17.0 ppx_derivers.1.2.1 ppx_diff.v0.17.1
          ppx_disable_unused_warnings.v0.17.0 ppx_enumerate.v0.17.0
          ppx_expect.v0.17.3 ppx_fields_conv.v0.17.0
          ppx_fixed_literal.v0.17.0 ppx_globalize.v0.17.2 ppx_hash.v0.17.0
          ppx_here.v0.17.0 ppx_ignore_instrumentation.v0.17.0
          ppx_inline_test.v0.17.1 ppx_jane.v0.17.0 ppx_let.v0.17.1
          ppx_log.v0.17.0 ppx_module_timer.v0.17.0 ppx_optcomp.v0.17.1
          ppx_optional.v0.17.0 ppx_pipebang.v0.17.0 ppx_sexp_conv.v0.17.1
          ppx_sexp_message.v0.17.0 ppx_sexp_value.v0.17.0 ppx_stable.v0.17.1
          ppx_stable_witness.v0.17.0 ppx_string.v0.17.0
          ppx_string_conv.v0.17.0 ppx_tydi.v0.17.1 ppx_typerep_conv.v0.17.1
          ppx_variants_conv.v0.17.1 ppxlib.0.38.0 ppxlib_jane.v0.17.4
          res.5.0.2 result.1.5 sexplib.v0.17.0 sexplib0.v0.17.0
          splittable_random.v0.17.0 stdint.0.7.2 stdio.v0.17.0
          stdlib-shims.0.3.0 time_now.v0.17.0 typerep.v0.17.1 uint.2.0.1
          uopt.v0.17.0 variantslib.v0.17.0 ocaml-base-compiler&capnp
          system-mingw system-mingw|system-msvc ocaml-base-compiler ocaml
          base-domains ocaml-variants ocaml-base-compiler
- base -> (problem)
    capnp 3.1.0 requires not(>= v0.10.0)
    Rejected candidates:
      base.v0.17.3: Incompatible with restriction: not(>= v0.10.0)
      base.v0.17.2: Incompatible with restriction: not(>= v0.10.0)
      base.v0.17.1: Incompatible with restriction: not(>= v0.10.0)
      base.v0.17.0: Incompatible with restriction: not(>= v0.10.0)
      base.v0.16.5: Requires sexplib0 >= v0.16 & < v0.17
      base.v0.16.4: Requires sexplib0 >= v0.16 & < v0.17
      base.v0.16.3: Requires sexplib0 >= v0.16 & < v0.17
      base.v0.16.2: Requires sexplib0 >= v0.16 & < v0.17
      base.v0.16.1: Requires sexplib0 >= v0.16 & < v0.17
      base.v0.16.0: Requires sexplib0 >= v0.16 & < v0.17
      base.v0.15.2: Requires sexplib0 >= v0.15 & < v0.16
      base.v0.15.1: Requires sexplib0 >= v0.15 & < v0.16
      base.v0.15.0: Requires ocaml >= 4.10.0 & < 5.0
      base.v0.14.4: Requires sexplib0 >= v0.14 & < v0.15
      base.v0.14.3: Requires sexplib0 >= v0.14 & < v0.15
      base.v0.14.2: Requires sexplib0 >= v0.14 & < v0.15
      base.v0.14.1: Requires ocaml >= 4.08.0 & < 4.14
      base.v0.14.0: Requires ocaml >= 4.07.0 & < 4.12
      base.v0.13.2: Requires ocaml >= 4.04.2 & < 4.12
      base.v0.13.1: Requires ocaml >= 4.04.2 & < 4.12
- capnp -> capnp.3.1.0
    User requested = 3.1.0
- dune -> (problem)
    base_bigstring v0.17.0 requires >= 3.11.0
    Rejected candidates:
      dune.3.24.1: Requires jbuilder not(= transition)
      dune.3.24.0: Requires jbuilder not(= transition)
      dune.3.23.1: Requires jbuilder not(= transition)
      dune.3.23.0: Requires jbuilder not(= transition)
      dune.3.22.2: Requires jbuilder not(= transition)
      dune.3.22.1: Requires jbuilder not(= transition)
      dune.3.22.0: Requires jbuilder not(= transition)
      dune.3.21.1: Requires jbuilder not(= transition)
      dune.3.21.0: Requires jbuilder not(= transition)
      dune.3.20.2: Requires jbuilder not(= transition)
      dune.3.20.1: Requires jbuilder not(= transition)
      dune.3.20.0: Requires jbuilder not(= transition)
      dune.3.19.1: Requires jbuilder not(= transition)
      dune.3.19.0: Requires jbuilder not(= transition)
      dune.3.18.2: Requires jbuilder not(= transition)
      dune.3.17.2: Requires jbuilder not(= transition)
      dune.3.15.3: Requires jbuilder not(= transition)
      dune.3.12.2: Requires jbuilder not(= transition)
      dune.3.12.1: Requires jbuilder not(= transition)
      dune.3.10.0: Incompatible with restriction: >= 3.11.0
      dune.3.6.2: Incompatible with restriction: >= 3.11.0
      dune.3.5.0: Incompatible with restriction: >= 3.11.0
      dune.2.9.3: Incompatible with restriction: >= 3.11.0
      dune.2.7.1: Incompatible with restriction: >= 3.11.0
      dune.2.6.1: Incompatible with restriction: >= 3.11.0
      dune.2.5.1: Incompatible with restriction: >= 3.11.0
      dune.2.4.0: Incompatible with restriction: >= 3.11.0
      dune.2.3.0: Incompatible with restriction: >= 3.11.0
      dune.1.11.4: Incompatible with restriction: >= 3.11.0
      dune.1.6.3: Incompatible with restriction: >= 3.11.0
- ocaml -> ocaml.5.5.0
    ocaml-compiler 5.5.0 requires = 5.5.0
- ocaml-base-compiler -> ocaml-base-compiler.5.5.0
    User requested >= 4.08.0
- ocaml-compiler -> ocaml-compiler.5.5.0
    ocaml-base-compiler 5.5.0 requires = 5.5.0
- ocaml-variants -> (problem)
    Rejected candidates:
      ocaml-variants.5.6.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.5.1+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.5.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.5.0~rc1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.5.0~beta1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.5.0~alpha3+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.5.0~alpha1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.2+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.1+lrgrep: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0~rc1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0~beta2+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0~beta1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.4.0~alpha1+options: 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
      ocaml-variants.5.2.2+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.2.1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.2.1~rc1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.2.0+statmemprof: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.2.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.2.0+msvc: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.1.2+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.1.1+tsan: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.1.1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.1.1+flambda2+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.1.1+flambda2: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.1.1+effect-syntax: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.1.0+tsan: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.1.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.0.1+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.0.0+tsan: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.5.0.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.14.5+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.14.4+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.14.3+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.14.2+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.14.2~rc1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.14.1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.14.1+BER: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.14.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.13.2+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.13.1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.13.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.12.2+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.12.1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.12.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.12.0+domains+effects: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.12.0+domains: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.3+trunk+fp: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.3+trunk+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.3+trunk+afl: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.3+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+spacetime: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+no-flat-float-array: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+musl+static+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+musl+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+fp+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+fp: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+flambda+no-flat-float-array: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+default-unsafe-string: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+bytecode-only: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+afl: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.2+32bit: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+spacetime: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+no-flat-float-array: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+musl+static+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+musl+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+fp+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+fp: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+flambda+no-flat-float-array: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+default-unsafe-string: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+bytecode-only: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+afl: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+BER+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+BER: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.1+32bit: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+spacetime: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+no-flat-float-array: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+musl+static+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+musl+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+fp+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+fp: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+flambda+no-flat-float-array: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+flambda: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+default-unsafe-string: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+bytecode-only: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+afl: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
      ocaml-variants.4.11.0+32bit: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler
- system-mingw -> (problem)
    No known implementations at all

If you believe capnp.3.1.0 should be installable on Debian trixie, please comment on the ocurrent/ocaml-docs-ci issues: find issue · report issue