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

Calculating dependencies ... done!
Dependency resolution took 0.85 s (backtrack: 0/20).


!!! All ebuilds that could satisfy "=app-doc/geant-docs-4.11.4" have been masked.
!!! One of the following masked packages is required to complete your request:
- app-doc/geant-docs-4.11.4::gentoo (masked by: geant4 license(s))
A copy of the 'geant4' license is located at '/Volumes/Disk 1/Repository/portage-git/licenses/geant4'.


For more information, see the MASKED PACKAGES section in the emerge
man page or refer to the Gentoo Handbook.