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

Calculating dependencies ... done!
Dependency resolution took 0.98 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/PerlIO-via-dynamic-0.140.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 35 KiB
[ebuild  N     ] dev-perl/IO-Digest-0.110.0-r4::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 22 KiB

Total: 2 packages (2 new), Size of downloads: 56 KiB