As suggested by sage-on-gento staff can you keyword that package? https://github.com/cschwan/sage-on-gentoo/issues/393#issuecomment-178937353 Reproducible: Always
Hello Alessandro, this package lacks a maintainer. If you are interested, you may wish to proxy maintain this package.
This is fixed in, https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=e46b357454a3ad89773f243b512757587f130cb6 If the bump to EAPI=6 causes any new problems, please CC me on the bug so it doesn't wind up assigned to maintainer-needed.