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

Calculating dependencies ... done!
Dependency resolution took 0.95 s (backtrack: 0/20).

[ebuild   R    ] dev-libs/xxhash-0.8.3-r2::gentoo  USE="-static-libs" 1121 KiB

Total: 1 package (1 reinstall), Size of downloads: 1121 KiB