java-11to8-rebuild : Utility for bulk rebuilding Java packages when switching from Java 11 back to 8 ( https://github.com/Leo3418/spark-overlay/discussions/1 )
spark-overlay-rebuild : Utility for bulk rebuilding dev-java/*::spark-overlay packages ( https://github.com/6-6-6/spark-overlay )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a spark-overlay
For Paludis use this rsync : rsync://gentoo.zugaina.org/spark-overlay-portage
If you have a problem : ycarus(-at-)zugaina.org