libvirt installs the policykit rules file (under /usr/share/polkit-1/rules.d) from upstream (daemon/libvirt.rules), which allows members of the libvirt group to manage virtual machines. The libvirt group does not exist on gentoo, instead a qemu group is created. As I use qemu, which creates the kvm group, I manually change it to kvm to make it work. There are two different ways to solve this (as far as I can see): 1. create a libvirt group 2. change the policy file to use another existing group (qemu, kvm) or at least warn about that after installation
(In reply to Kristian from comment #0) > As I use qemu, which creates the kvm group, I manually change it to kvm to make it work. It is better to drop your overrides into /etc/polkit-1/rules.d instead of manually overriding this file.
I have updated 2.5.0-r2 and 9999. (The former will be stabilized soon). commit dc2a7fec11cf5c934bd2a6fe656bd930a11c9abb Author: Matthias Maier <tamiko@gentoo.org> Date: Sun Jan 22 10:14:10 2017 -0600 app-emulation/libvirt: add a libvirt group, bug #597772 Add a libvirt group for convenience and update readme Package-Manager: Portage-2.3.0, Repoman-2.3.1