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

Calculating dependencies ... done!
Dependency resolution took 0.88 s (backtrack: 1/20).


!!! All ebuilds that could satisfy "sci-physics/root:=" have been masked.
!!! One of the following masked packages is required to complete your request:
- sci-physics/root-9999::gentoo (masked by: freedist MSttfEULA license(s), missing keyword)
A copy of the 'freedist' license is located at '/Volumes/Disk 1/Repository/portage-git/licenses/freedist'.

A copy of the 'MSttfEULA' license is located at '/Volumes/Disk 1/Repository/portage-git/licenses/MSttfEULA'.

- sci-physics/root-6.40.9999::gentoo (masked by: freedist MSttfEULA license(s), missing keyword)
- sci-physics/root-6.40.04::gentoo (masked by: freedist MSttfEULA license(s))
- sci-physics/root-6.38.04::gentoo (masked by: freedist MSttfEULA license(s))

(dependency required by "sci-physics/vmc-2.1::gentoo" [ebuild])
(dependency required by "=sci-physics/vmc-2.1" [argument])
For more information, see the MASKED PACKAGES section in the emerge
man page or refer to the Gentoo Handbook.