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

Calculating dependencies ... done!
Dependency resolution took 1.55 s (backtrack: 0/20).

[ebuild     U  ] dev-libs/xmlsec-1.3.12:0/1.3.12::gentoo [1.3.7-r1:0/1.3::gentoo] USE="http openssl -doc -gcrypt -gnutls -nss -static-libs -test -verify-sig%" 3019 KiB

Total: 1 package (1 upgrade), Size of downloads: 3019 KiB