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

Calculating dependencies ... done!
Dependency resolution took 0.88 s (backtrack: 2/20).


!!! All ebuilds that could satisfy "sci-biology/prosite" have been masked.
!!! One of the following masked packages is required to complete your request:
- sci-biology/prosite-2017.02-r1::gentoo (masked by: swiss-prot license(s))
A copy of the 'swiss-prot' license is located at '/Volumes/Disk 1/Repository/portage-git/licenses/swiss-prot'.


(dependency required by "sci-biology/emboss-6.6.0-r4::gentoo[-minimal]" [ebuild])
(dependency required by "sci-biology/embassy-clustalomega-1.1.0.660-r1::gentoo" [ebuild])
(dependency required by "=sci-biology/embassy-clustalomega-1.1.0.660-r1" [argument])
For more information, see the MASKED PACKAGES section in the emerge
man page or refer to the Gentoo Handbook.