Packages with the plymouth use flag

gnome-base / gdm : GNOME Display Manager for managing graphical display servers and user logins

  • Enable support for smooth transition from sys-boot/plymouth

kde-plasma / plasma-meta : Merge this to pull in all Plasma 5 packages

  • Pull in Breeze theme for sys-boot/plymouth

sys-kernel / genkernel-next : Gentoo automatic kernel building scripts, reloaded

  • Enable support for Plymouth (include Plymouth dependency)