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

Calculating dependencies ... done!
Dependency resolution took 1.03 s (backtrack: 0/20).

[ebuild  N     ] acct-group/fax-0-r2::gentoo  0 KiB
[ebuild  N     ] acct-user/fax-0-r2::gentoo  0 KiB
[ebuild  N     ] media-libs/netpbm-11.16.1:0/advanced::gentoo  USE="X jpeg png tiff -postscript -rle -static-libs -test -xml" CPU_FLAGS_X86="sse2" 3753 KiB
[ebuild  N     ] net-dialup/mgetty-1.2.1-r4::gentoo  USE="fax (split-usr) -fidonet" 1053 KiB

Total: 4 packages (4 new), Size of downloads: 4805 KiB