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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/ppl-1.2-r5:0/4.14::gentoo  USE="cxx -cdd -doc -lpsol (-pch) -test" 13826 KiB

Total: 1 package (1 new), Size of downloads: 13826 KiB