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

Calculating dependencies ... done!
Dependency resolution took 0.85 s (backtrack: 1/20).


!!! All ebuilds that could satisfy "app-arch/unrar" have been masked.
!!! One of the following masked packages is required to complete your request:
- app-arch/unrar-7.3.1::gentoo (masked by: unRAR license(s))
A copy of the 'unRAR' license is located at '/Volumes/Disk 1/Repository/portage-git/licenses/unRAR'.

- app-arch/unrar-7.2.7::gentoo (masked by: unRAR license(s))

(dependency required by "dev-python/rarfile-4.4::gentoo[-test,compressed]" [ebuild])
(dependency required by "=dev-python/rarfile-4.4" [argument])
For more information, see the MASKED PACKAGES section in the emerge
man page or refer to the Gentoo Handbook.