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

Calculating dependencies ... done!
Dependency resolution took 2.39 s (backtrack: 5/20).

[ebuild  N     ] dev-libs/json-glib-1.10.8::gentoo  USE="nls -gtk-doc -introspection -test" 1264 KiB
[ebuild  N     ] dev-libs/libjcat-0.2.6::gentoo  USE="ed25519 gpg man pkcs7 -gtk-doc -introspection -test -vala -verify-sig" 71 KiB

Total: 2 packages (2 new), Size of downloads: 1335 KiB

WARNING: One or more updates/rebuilds have been skipped due to a dependency conflict:

dev-python/packaging:0

  (dev-python/packaging-26.3:0/0::gentoo, ebuild scheduled for merge) USE="-test -verify-provenance" PYTHON_TARGETS="python3_14 -pypy3_12 -python3_12 -python3_13 -python3_14t (-python3_15) (-python3_15t)" conflicts with
    >=dev-python/packaging-23.2[python_targets_python3_13(-)] required by (dev-python/pyproject-metadata-0.11.0:0/0::gentoo, installed) USE="-test -verify-provenance" PYTHON_TARGETS="python3_13 -pypy3_11 -python3_11 -python3_12 -python3_13t -python3_14 -python3_14t"
                                                             
    >=dev-python/packaging-24.2[python_targets_python3_13(-)] required by (dev-python/hatchling-1.29.0:0/0::gentoo, installed) USE="-test" PYTHON_TARGETS="python3_13 -pypy3_11 -python3_11 -python3_12 -python3_13t -python3_14 -python3_14t"
                                                             
    dev-python/packaging[python_targets_python3_13(-)] required by (dev-python/setuptools-scm-9.2.2:0/0::gentoo, installed) USE="-test -verify-provenance" PYTHON_TARGETS="python3_13 -pypy3_11 -python3_11 -python3_12 -python3_13t -python3_14 -python3_14t"
                                                      
    >=dev-python/packaging-25.0[python_targets_python3_13(-)] required by (dev-python/setuptools-81.0.0:0/0::gentoo, installed) USE="-test" PYTHON_TARGETS="python3_13 -pypy3_11 -python3_11 -python3_12 -python3_13t -python3_14 -python3_14t"
                                                             
    >=dev-python/packaging-26.0[python_targets_python3_13(-)] required by (dev-python/wheel-0.46.3:0/0::gentoo, installed) USE="-test -verify-provenance" PYTHON_TARGETS="python3_13 -pypy3_11 -python3_11 -python3_12 -python3_13t -python3_14 -python3_14t"
                                                             
    >=dev-python/packaging-23.2[python_targets_python3_13(-)] required by (dev-python/scikit-build-core-0.12.2:0/0::gentoo, installed) USE="-test -verify-provenance" PYTHON_TARGETS="python3_13 -pypy3_11 -python3_11 -python3_12 -python3_14"
                                                             


!!! The following update(s) have been skipped due to unsatisfied dependencies
!!! triggered by backtracking:

dev-python/setuptools:0