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

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] app-text/docbook-sgml-dtd-4.0-r5:4.0::gentoo  55 KiB

Total: 1 package (1 new), Size of downloads: 55 KiB