>>> Emerging : portage://dev-ml/ppx_deriving-6.0.3-r1:run?{[]}

These are the packages that would be merged, in order:

Calculating dependencies... done!

 └─step  1─┤ download  portage://dev-lang/ocaml-4.14.2
             │           └─ file ─┤ 5.25 Mb  	 ocaml-4.14.2.tar.gz
             │ download  portage://dev-ml/cppo-1.8.0
             │           └─ file ─┤ 42.57 Kb  	 cppo-1.8.0.tar.gz
             │ download  portage://dev-ml/dune-3.23.1
             │           └─ file ─┤ 3.54 Mb  	 dune-3.23.1.tar.gz
             │ download  portage://dev-ml/findlib-1.9.8
             │           └─ file ─┤ 268.23 Kb  	 findlib-1.9.8.tar.gz
             │ download  portage://dev-ml/ocaml-compiler-libs-0.12.4-r2
             │           └─ file ─┤ 5.31 Kb  	 ocaml-compiler-libs-0.12.4.tar.gz
             │ download  portage://dev-ml/ocaml-migrate-parsetree-2.4.0-r1
             │           └─ file ─┤ 202.47 Kb  	 ocaml-migrate-parsetree-2.4.0.tar.gz
             │ download  portage://dev-ml/ocamlbuild-0.16.1
             │           └─ file ─┤ 197.67 Kb  	 ocamlbuild-0.16.1.tar.gz
             │ download  portage://dev-ml/ppx_derivers-1.2.1
             │           └─ file ─┤ 2.47 Kb  	 ppx_derivers-1.2.1.tar.gz
             │ download  portage://dev-ml/ppx_deriving-6.0.3-r1
             │           └─ file ─┤ 47.40 Kb  	 ppx_deriving-6.0.3.tar.gz
             │ download  portage://dev-ml/ppxlib-0.30.0-r2
             │           └─ file ─┤ 560.31 Kb  	 ppxlib-0.30.0.tar.gz
             │ download  portage://dev-ml/sexplib0-0.17.0-r2
             │           └─ file ─┤ 22.51 Kb  	 sexplib0-0.17.0.tar.gz
             │ download  portage://dev-ml/stdlib-shims-0.3.0
             │           └─ file ─┤ 9.92 Kb  	 stdlib-shims-0.3.0.tbz

Total: 12 actions (12 downloads), grouped into 1 step.
       10.12 Mb to be downloaded.



Error The proof for your build plan contains domain assumptions. Please verify:


>>> Domain assumptions

- Unsatisfied constraints for install dependency: 
  >=dev-ml/ppxlib-0.32.0:= [ ocamlopt? ]

  required by: portage://dev-ml/ppx_deriving-6.0.3-r1
  Known open bug:
    #984060  dev-ml/ppxlib-0.37.0-r1 with dev-lang/ocaml-5.5.1 - Failed to run command: dune : Unknown OCaml version 5.5.1
           https://bugs.gentoo.org/show_bug.cgi?id=984060

- Unsatisfied constraints for run dependency: 
  >=dev-ml/ppxlib-0.32.0:= [ ocamlopt? ]

  required by: portage://dev-ml/ppx_deriving-6.0.3-r1
  Known open bug:
    #984060  dev-ml/ppxlib-0.37.0-r1 with dev-lang/ocaml-5.5.1 - Failed to run command: dune : Unknown OCaml version 5.5.1
           https://bugs.gentoo.org/show_bug.cgi?id=984060


>>> Bug report drafts (Gentoo Bugzilla)

---
Summary: portage://dev-ml/ppx_deriving-6.0.3-r1: unsatisfied_constraints dependency on dev-ml/ppxlib

Affected package: portage://dev-ml/ppx_deriving-6.0.3-r1
Dependency: dev-ml/ppxlib
Phases: [install,run]

Unsatisfiable constraint(s):
  >=dev-ml/ppxlib-0.32.0:=

Observed:
  portage-ng reports no available candidate satisfies the above constraint(s).
  Available versions in repo set (sample, first 7 of 7): [0.22.2-r4,0.24.0-r2,0.30.0-r2,0.33.0-r2,0.36.2-r1,0.37.0-r1,0.39.0]

Potential fix (suggestion):
  Review dependency metadata in portage://dev-ml/ppx_deriving-6.0.3-r1; constraint set: [constraint(greaterequal,0.32.0,[any_same_slot])].