openfst : Finite State Transducer tools by Google et al ( https://www.openfst.org/twiki/bin/view/FST/WebHome )
opengrm-ngram : n-gram language models encoded as weighted finite-state transducers ( https://www.opengrm.org/twiki/bin/view/GRM/NGramLibrary )
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