bemenu : dmenu clone for wayland ( https://github.com/Cloudef/bemenu )
emptty : Dead simple CLI Display Manager on TTY ( https://github.com/tvrzna/emptty )
gammastep : A screen color temperature adjusting software ( https://gitlab.com/chinstrap/gammastep/ )
wlsunset : Day/night gamma adjustments for Wayland ( https://sr.ht/~kennylevinsen/wlsunset/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a amano-kenji
For Paludis use this rsync : rsync://gentoo.zugaina.org/amano-kenji-portage
If you have a problem : ycarus(-at-)zugaina.org