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

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/Sort-Key-1.330.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 57 KiB
[ebuild  N     ] dev-perl/Sort-Key-IPv4-0.30.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 38 KiB

Total: 2 packages (2 new), Size of downloads: 95 KiB