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

Calculating dependencies ... done!
Dependency resolution took 0.98 s (backtrack: 0/20).

[ebuild  N     ] dev-db/cdb-0.75-r5::gentoo  53 KiB
[ebuild  N     ] dev-libs/bglibs-2.04-r5:0/2::gentoo  USE="-doc" 697 KiB
[ebuild  N     ] net-libs/cvm-0.97-r2::gentoo  USE="-mysql -postgres -test -vpopmail" 125 KiB

Total: 3 packages (3 new), Size of downloads: 875 KiB