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

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/MIME-Types-2.290.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 68 KiB
[ebuild  N     ] dev-perl/IPC-Signal-1.0.0-r3::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 3 KiB
[ebuild  N     ] dev-perl/Email-Date-Format-1.8.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 17 KiB
[ebuild  N     ] dev-perl/Proc-WaitStat-1.0.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 4 KiB
[ebuild  N     ] dev-perl/mime-construct-1.1100.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 13 KiB

Total: 5 packages (5 new), Size of downloads: 104 KiB