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

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

[ebuild  N     ] media-libs/libdiscid-0.6.4::gentoo  384 KiB
[ebuild  N     ] dev-perl/MusicBrainz-DiscID-0.60.0::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 7 KiB

Total: 2 packages (2 new), Size of downloads: 391 KiB