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

Calculating dependencies ... done!
Dependency resolution took 1.03 s (backtrack: 0/20).

[ebuild  N     ] app-crypt/uacme-1.8.1::gentoo  USE="openssl ualpn -doc -gnutls" 247 KiB

Total: 1 package (1 new), Size of downloads: 247 KiB