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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] sci-physics/heppdt-3.04.01-r2::gentoo  USE="-doc -examples -static-libs" 1809 KiB

Total: 1 package (1 new), Size of downloads: 1809 KiB