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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] sci-biology/velvet-1.2.10::gentoo  USE="openmp -doc" 18378 KiB

Total: 1 package (1 new), Size of downloads: 18378 KiB