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

Calculating dependencies ... done!
Dependency resolution took 0.98 s (backtrack: 0/20).

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

Total: 1 package (1 new), Size of downloads: 415 KiB