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

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

[ebuild  N     ] sci-libs/scotch-7.0.13:0/7::gentoo  USE="threads -doc -int64 -mpi -static-libs -test -tools" 7814 KiB

Total: 1 package (1 new), Size of downloads: 7814 KiB