ethash : The Ethereum Proof of Work algorithm ( https://github.com/chfast/ethash )
evmc : Ethereum Client-VM Connector API ( https://github.com/ethereum/evmc )
evmone : Fast Ethereum Virtual Machine implementation ( https://github.com/ethereum/evmone )
intx : Extended precision integer C++ library. ( https://github.com/chfast/intx )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a ethereum
For Paludis use this rsync : rsync://gentoo.zugaina.org/ethereum-portage
If you have a problem : ycarus(-at-)zugaina.org