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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/libp11-0.4.17::gentoo  USE="-doc -static-libs -test -verify-sig" 563 KiB
[ebuild  N     ] sys-apps/rng-tools-6.17-r1::gentoo  USE="pkcs11 -jitterentropy -nistbeacon -qrypt -rtlsdr (-selinux) -test" 69 KiB

Total: 2 packages (2 new), Size of downloads: 631 KiB