libdeflate : Heavily optimized DEFLATE/zlib/gzip (de)compression ( https://github.com/ebiggers/libdeflate )
libzim : reference implementation for the ZIM archive format ( https://wiki.openzim.org/wiki/OpenZI )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a stefantalpalaru
For Paludis use this rsync : rsync://gentoo.zugaina.org/stefantalpalaru-portage
If you have a problem : ycarus(-at-)zugaina.org