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

Calculating dependencies ... done!
Dependency resolution took 0.83 s (backtrack: 0/20).


!!! All ebuilds that could satisfy "=net-dns/bind-tools-9.18.0-r1" have been masked.
!!! One of the following masked packages is required to complete your request:
- net-dns/bind-tools-9.18.0-r1::gentoo (masked by: package.mask)
/Volumes/Disk 1/Repository/portage-git/profiles/package.mask:
# Sam James <sam@gentoo.org> (2026-07-16)
# Stub since Bind 9.18. Maintaining a separate build just for the client
# binaries proved brittle and unsustainable (see discussion in
# bug #832218 for details). Please use net-dns/bind instead. Other options
# include net-dns/cares-tools, net-libs/ldns's drill, and net-dns/doggo.
# Removal on 2026-08-15.  Bug #977172.


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