Why aren't we using libivirt plugin in Vagrant?

[Peeyush Gupta]

Hi all,

In relation to the change proposed here : https://fedoraproject.org/wiki/Changes/Vagrant I
was wondering why aren't we using libvirt plugin instead of KVM plugin? The thing is
libvirt is used more commonly than KVM, and could result in better implementation. Is
there any specific reason for using KVM plugin? 

Thanks,
~Peeyush Gupta