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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] dev-util/libabigail-2.10:0/9::gentoo  USE="-btf -debug -doc -test" 480031 KiB

Total: 1 package (1 new), Size of downloads: 480031 KiB