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

Calculating dependencies ... done!
Dependency resolution took 1.49 s (backtrack: 0/20).

[ebuild     U  ] net-libs/nghttp2-1.70.0:0/1.14::gentoo [1.68.0:0/1.14::gentoo] USE="-debug -hpack-tools (-systemd) -test -utils -verify-sig -xml (-jemalloc%)" 1972 KiB

Total: 1 package (1 upgrade), Size of downloads: 1972 KiB