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

Calculating dependencies ... done!
Dependency resolution took 1.59 s (backtrack: 0/20).

[ebuild     U  ] app-crypt/gnupg-2.5.20-r1::gentoo [2.5.18::gentoo] USE="alternatives bzip2 nls readline smartcard ssl tofu -doc -ldap (-selinux) -test -tools -tpm -usb -user-socket (-verify-sig) -wks-server" 8133 KiB

Total: 1 package (1 upgrade), Size of downloads: 8133 KiB