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

Calculating dependencies ... done!
Dependency resolution took 1.53 s (backtrack: 0/20).

[ebuild     U  ] app-arch/gzip-1.15::gentoo [1.14::gentoo] USE="-pic -static -verify-sig" 790 KiB

Total: 1 package (1 upgrade), Size of downloads: 790 KiB