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

Calculating dependencies ... done!
Dependency resolution took 1.08 s (backtrack: 0/20).

[ebuild  N     ] perl-core/Unicode-Collate-1.310.0::gentoo  PERL_FEATURES="ithreads (-debug) -quadmath" 906 KiB

Total: 1 package (1 new), Size of downloads: 906 KiB