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

Calculating dependencies ...

!!! Problem resolving dependencies for =app-i18n/nkf-2.1.5-r1
 done!
Dependency resolution took 0.83 s (backtrack: 0/20).


!!! The ebuild selected to satisfy "=app-i18n/nkf-2.1.5-r1" has unmet requirements.
- app-i18n/nkf-2.1.5-r1::gentoo USE="python -debug -perl -test" L10N="-ja" PERL_FEATURES="ithreads (-debug) -quadmath" PYTHON_TARGETS="-python3_12"

  The following REQUIRED_USE flag constraints are unsatisfied:
    python? ( python_targets_python3_12 )

  The above constraints are a subset of the following complete expression:
    python? ( any-of ( python_targets_python3_12 ) )