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

Calculating dependencies ... done!
Dependency resolution took 1.54 s (backtrack: 0/20).

[ebuild     U  ] app-arch/xz-utils-5.8.3::gentoo [5.8.2::gentoo] USE="extra-filters nls pgo -doc -static-libs -verify-sig" 2707 KiB

Total: 1 package (1 upgrade), Size of downloads: 2707 KiB