I found your email a bit confusing, so hopefully this is what you are after: (1) virt-builder --install is implemented using 'yum install' (2) virt-customize --install is implemented using 'yum install' For (1) and (2) I intend to replace yum with dnf when the guest version is Fedora >= 22 (or 23?) (3) virt-v2v uses 'yum install' and 'yum resolvedep' both for very complicated reasons. It may be best just to read the source: https://github.com/libguestfs/libguestfs/blob/master/v2v/convert_linux.ml (4) supermin uses yumdownloader. We would like to replace it with 'dnf download' except that it is broken (RHBZ#1157233). Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into KVM guests. http://libguestfs.org/virt-v2v -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct