Computer Graphics ebuilds overlay.
This page has user manual for gentoo beginners
https://t.me/cgoverlay/124
update external overlays list
# eselect repository list
# eselect repository enable cg
# emerge --sync cg
# eselect repository disable cg
# rm -r /var/db/repos/cg
Blender addons installs to system subdirectory by default:
/usr/share/blender/scripts/
You may set another path in make.conf before as CG_BLENDER_SCRIPTS_DIR
And, set it to PreferencesFilePaths.scripts_directory
More info you can find at page
https://docs.blender.org/manual/en/latest/preferences/file.html#scripts-path