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 "=dev-build/automake-1.11.6-r5" have been masked.
!!! One of the following masked packages is required to complete your request:
- dev-build/automake-1.11.6-r5::gentoo (masked by: package.mask)
/Volumes/Disk 1/Repository/portage-git/profiles/package.mask:
# Andreas K. Hüttel <dilfridge@gentoo.org> (2021-09-18)
# dev-build/automake version 1.11 is EOL and is only useful for testing
# old de-ANSI-fication/ansi2knr/AM_C_PROTOTYPES code. Please uninstall.


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