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

Calculating dependencies ... done!
Dependency resolution took 0.85 s (backtrack: 0/20).


!!! All ebuilds that could satisfy "=app-crypt/libsecret-0.21.7-r1" have been masked.
!!! One of the following masked packages is required to complete your request:
- app-crypt/libsecret-0.21.7-r1::gentoo (masked by: package.mask)
/Volumes/Disk 1/Repository/portage-git/profiles/package.mask:
# Michał Górny <mgorny@gentoo.org> (2025-06-29)
# File collision against gnome-base/gnome-keyring[pam], which is
# required via pambase.  Masked until the maintainer determines a good
# solution.  Bug #959274.


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