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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] dev-util/numdiff-5.9.0::gentoo  USE="gmp nls" 894 KiB

Total: 1 package (1 new), Size of downloads: 894 KiB