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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] media-libs/giflib-6.1.3:0/7::gentoo  USE="-doc -static-libs" 460 KiB
[ebuild  N     ] acct-group/ziproxy-0-r2::gentoo  0 KiB
[ebuild  N     ] acct-user/ziproxy-0-r2::gentoo  0 KiB
[ebuild  N     ] net-proxy/ziproxy-3.3.2-r1::gentoo  USE="-sasl -xinetd" 202 KiB

Total: 4 packages (4 new), Size of downloads: 661 KiB