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/Sys-Hostname-Long-1.500.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 6 KiB
[ebuild  N     ] dev-perl/Mail-Sendmail-0.820.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 23 KiB

Total: 2 packages (2 new), Size of downloads: 29 KiB