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

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

[ebuild  N     ] xfce-base/libxfce4util-4.21.0:0/7::gentoo  USE="-introspection -vala" 113 KiB

Total: 1 package (1 new), Size of downloads: 113 KiB