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

Calculating dependencies ... done!
Dependency resolution took 0.82 s (backtrack: 0/20).


!!! All ebuilds that could satisfy "=virtual/libcrypt-1-r2" have been masked.
!!! One of the following masked packages is required to complete your request:
- virtual/libcrypt-1-r2::gentoo (masked by: package.mask)
/Volumes/Disk 1/Repository/portage-git/profiles/base/package.mask:
# Sam James <sam@gentoo.org> (2021-11-22)
# Mask the older libcrypt virtual (which accepted glibc[crypt]) to ease
# dependency resolution. In a fair number of cases, this has helped
# upgrades go through cleanly.
# Read the news item if you need help!
# (This mask is undone in musl profiles where the transition is not yet being
# made.)
# bug #699422.


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