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

Calculating dependencies ... done!
Dependency resolution took 0.96 s (backtrack: 0/20).

[ebuild  N     ] dev-build/netsurf-buildsystem-1.10::gentoo  39 KiB
[ebuild  N     ] media-libs/libnsgif-1.0.0-r1:0/1.0.0::gentoo  276 KiB

Total: 2 packages (2 new), Size of downloads: 315 KiB