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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] dev-build/netsurf-buildsystem-1.10::gentoo  39 KiB
[ebuild  N     ] dev-libs/libparserutils-0.2.5:0/0.2.5::gentoo  USE="iconv -test" 73 KiB
[ebuild  N     ] dev-libs/libwapcaplet-0.4.3-r1:0/0.4.3::gentoo  USE="-test" 32 KiB
[ebuild  N     ] dev-libs/libcss-0.9.2:0/0.9.2::gentoo  USE="-test" 533 KiB

Total: 4 packages (4 new), Size of downloads: 675 KiB