Upstream supports python3 : https://github.com/pygraphviz/pygraphviz/issues/16 But in gentoo we only get the python2.7 version. Ideally the package could install both, using PYTHON_TARGETS
commit 7c6b217aa892a259b091a11e7d33d0cf2ee995f0 Author: Justin Lecher <jlec@gentoo.org> Date: Mon Sep 7 09:33:01 2015 +0200 dev-python/pygraphviz: Version Bump Gentoo-Bug: https://bugs.gentoo.org/show_bug.cgi?id=554436 Package-Manager: portage-2.2.20.1 Signed-off-by: Justin Lecher <jlec@gentoo.org> https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=7c6b217aa892a259b091a11e7d33d0cf2ee995f0