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

Calculating dependencies ... done!
Dependency resolution took 1.04 s (backtrack: 0/20).

[ebuild  N     ] dev-util/byacc-20260126::gentoo  USE="-verify-sig" 893 KiB
[ebuild  N     ] media-libs/libid3tag-0.16.4:0/0.16.4::gentoo  48 KiB
[ebuild  N     ] media-sound/mt-daapd-0.2.4.2-r2::gentoo  USE="-vorbis" 427 KiB

Total: 3 packages (3 new), Size of downloads: 1367 KiB