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

Calculating dependencies ... done!
Dependency resolution took 1.07 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/B-COW-0.7.0::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 19 KiB

Total: 1 package (1 new), Size of downloads: 19 KiB