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/Algorithm-Diff-1.201.0::gentoo  USE="-examples" PERL_FEATURES="ithreads (-debug) -quadmath" 30 KiB
[ebuild  N     ] dev-perl/Algorithm-Annotate-0.100.0-r2::gentoo  PERL_FEATURES="ithreads (-debug) -quadmath" 2 KiB

Total: 2 packages (2 new), Size of downloads: 31 KiB