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

Calculating dependencies ... done!
Dependency resolution took 1.08 s (backtrack: 0/20).

[ebuild  N     ] media-libs/giflib-6.1.3:0/7::gentoo  USE="-doc -static-libs" 460 KiB
[ebuild  N     ] media-libs/libexif-0.6.26::gentoo  USE="nls -doc -verify-sig" 1305 KiB
[ebuild  N     ] x11-libs/libXres-1.2.3::gentoo  USE="-doc" 263 KiB
[ebuild  N     ] x11-libs/libXv-1.0.13::gentoo  USE="-doc" 275 KiB
[ebuild  N     ] x11-wm/windowmaker-0.96.0-r1:0/6.3.5::gentoo  USE="gif jpeg nls png tiff xpm -imagemagick -modelock -webp -xinerama -xrandr" 3595 KiB
[ebuild  N     ] x11-themes/windowmaker-themes-0.1-r1::gentoo  USE="-offensive" 16029 KiB

Total: 6 packages (6 new), Size of downloads: 21925 KiB