adw-gtk3 : The theme from libadwaita ported to GTK-3 ( https://github.com/lassekongo83/adw-gtk3 )
apple-cursor : Open source macOS cursors ( https://github.com/ful1e5/apple_cursor )
arc-theme : A flat theme with transparent elements ( https://github.com/jnsh/arc-theme )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a xira
For Paludis use this rsync : rsync://gentoo.zugaina.org/xira-portage
If you have a problem : ycarus(-at-)zugaina.org