kernel-cleaner : Designed for remove broken kernels from /boot and source_dirs/modules_dirs ( https://github.com/megabaks/kernel-cleaner )
pf-sources : Linux kernel fork that includes the pf-kernel patchset and Gentoo's genpatches ( https://pfkernel.natalenko.name/ see: ${HOMEPAGE}. )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a stuff
For Paludis use this rsync : rsync://gentoo.zugaina.org/stuff-portage
If you have a problem : ycarus(-at-)zugaina.org