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

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/gmime-2.6.23-r2:2.6::gentoo  USE="smime -doc -test -vala" 5095 KiB

Total: 1 package (1 new), Size of downloads: 5095 KiB