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

Calculating dependencies ... done!
Dependency resolution took 1.63 s (backtrack: 0/20).

[ebuild     U  ] app-crypt/gpgme-2.2.0:1/45.0::gentoo [2.0.1-r1:1/45.0::gentoo] USE="-common-lisp -static-libs -test -verify-sig" 1389 KiB
[ebuild  N     ] dev-cpp/gpgmepp-2.1.0:0/7::gentoo  USE="-test -verify-sig" 121 KiB

Total: 2 packages (1 upgrade, 1 new), Size of downloads: 1510 KiB