plymouth-calculate-plugin : Graphical boot animation (splash) and logger ( https://cgit.freedesktop.org/plymouth/ )
plymouth-openrc-plugin : Plymouth plugin for OpenRC ( https://github.com/Kangie/plymouth-openrc-plugin )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a calculate
For Paludis use this rsync : rsync://gentoo.zugaina.org/calculate-portage
If you have a problem : ycarus(-at-)zugaina.org