Gentoo overlay for Estonian ID-card software
add overlay definition to your layman.conf so it looks something like that
overlays :
https://api.gentoo.org/overlays/repositories.xml
https://raw.githubusercontent.com/open-eid/gentoo/master/profiles/overlay.xml
and then just
# layman -a esteid
There is no official support for this distribution, the scripts provided here are on best-effort basis AS IS terms.