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

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

[ebuild  N     ] dev-debug/ltrace-0.8.1::gentoo  USE="-debug -elfutils (-selinux) -test -unwind" 291 KiB

Total: 1 package (1 new), Size of downloads: 291 KiB