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

Calculating dependencies ... done!
Dependency resolution took 0.96 s (backtrack: 0/20).

[ebuild  N     ] www-apache/pwauth-2.3.10-r2::gentoo  USE="pam -domain-aware -faillog -ignore-case (-selinux)" 24 KiB

Total: 1 package (1 new), Size of downloads: 24 KiB