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

Calculating dependencies ... done!
Dependency resolution took 1.05 s (backtrack: 0/20).

[ebuild  N     ] acct-group/munge-0-r2::gentoo  0 KiB
[ebuild  N     ] acct-user/munge-0-r2::gentoo  0 KiB
[ebuild  N     ] sys-auth/munge-0.5.18::gentoo  USE="-debug -gcrypt -static-libs" 456 KiB

Total: 3 packages (3 new), Size of downloads: 456 KiB