If I install texlive 2012 from DVD, biblatex is will be installed.
But currently, biblatex is mark as unstable is not installed.
(In reply to Yichao Zhou from comment #0)
> If I install texlive 2012 from DVD, biblatex is will be installed.
> But currently, biblatex is mark as unstable is not installed.
Currently only texlive 2017 is stable (or even in the tree; see <https://packages.gentoo.org/packages/app-text/texlive-core>). So please try that and report back.
It is still the same situation with recent texlive
tested by asking our chatbot wilikins
I think dev-tex/biblatex should not be a hard RDEPEND for app-text/texlive, because many users can work without it.
For example if you need app-text/texlive as renderer for TeX support in Inkscape.
*** Bug 746707 has been marked as a duplicate of this bug. ***