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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] media-libs/libcdaudio-0.99.12-r5::gentoo  349 KiB
[ebuild  N     ] dev-perl/Audio-CD-disc-cover-0.05-r4::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 11 KiB

Total: 2 packages (2 new), Size of downloads: 359 KiB