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

Calculating dependencies ... done!
Dependency resolution took 1.03 s (backtrack: 0/20).

[ebuild  N     ] app-forensics/sleuthkit-4.12.1-r3:0/19::gentoo  USE="threads zlib -aff -doc -ewf -java -static-libs -test" 3681 KiB

Total: 1 package (1 new), Size of downloads: 3681 KiB