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

Calculating dependencies ... done!
Dependency resolution took 0.87 s (backtrack: 1/20).


!!! All ebuilds that could satisfy "media-gfx/xv" have been masked.
!!! One of the following masked packages is required to complete your request:
- media-gfx/xv-6.2.0::gentoo (masked by: xv license(s))
A copy of the 'xv' license is located at '/Volumes/Disk 1/Repository/portage-git/licenses/xv'.

- media-gfx/xv-6.1.0-r1::gentoo (masked by: xv license(s))
- media-gfx/xv-6.0.2::gentoo (masked by: xv license(s))
- media-gfx/xv-6.0.1::gentoo (masked by: xv license(s))

(dependency required by "x11-themes/commonbox-styles-extra-0.2-r3::gentoo" [ebuild])
(dependency required by "=x11-themes/commonbox-styles-extra-0.2-r3" [argument])
For more information, see the MASKED PACKAGES section in the emerge
man page or refer to the Gentoo Handbook.