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

Calculating dependencies ... done!
Dependency resolution took 1.05 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/Tie-IxHash-1.230.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 10 KiB
[ebuild  N     ] dev-perl/Archive-Zip-1.680.0::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 160 KiB
[ebuild  N     ] games-util/umodpack-0.5_beta16-r3::gentoo  PERL_FEATURES="ithreads (-debug) -quadmath" 3521 KiB

Total: 3 packages (3 new), Size of downloads: 3690 KiB