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

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

[ebuild  N     ] dev-libs/pkcs11-helper-1.31.0::gentoo  USE="-doc -gnutls -nss -test" 415 KiB
[ebuild  N     ] app-crypt/pkcs11-data-0.7.4::gentoo  221 KiB

Total: 2 packages (2 new), Size of downloads: 636 KiB