Unmask all packages in Gentoo for a specific ISA:

In the /etc/portage/make.conf file, add this to the end of the file to unmask all packages (replace ppc with your wanted ISA, and keep the ~ before it):
ACCEPT_KEYWORDS="~ppc" ACCEPT_LICENSE="*"
*It is important to note that this can make the system unstable, especially if your ISA is not currently popular/common!

Source | Date: May 6th 2023

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