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

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

[ebuild  N     ] perl-core/Test-Harness-3.500.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 211 KiB

Total: 1 package (1 new), Size of downloads: 211 KiB