Using libvirt (KVM/QEMU) with MediaWiki-Vagrant
libvirt is a virtualization API. It supports multiple backends (hypervisors), including KVM/QEMU.
Running MediaWiki-Vagrant in KVM/QEMU under libvirt requires to install the libvirt Vagrant plugin. On a Fedora system, you can just install the package vagrant-libvirt. For Debian see their wiki page wiki.debian.org/KVM#Installation
At first download the Debian Jessie box:
vagrant box add debian/contrib-jessie64 # app.vagrantup.com/debian/boxes/contrib-jessie64
You would then need to convert the box to libvirt. Install the mutate plugin either from your distribution package 'vagrant-mutate' or if not available:
vagrant plugin install mutate
Then do the conversion:
vagrant mutate debian/contrib-jessie64 libvirt
vagrant up --provider=libvirt
Currently vagrant-libvirt does only support system VMs (cf. github.com/pradels/vagrant-libvirt/issues/272).