The new version of the libvirt-0.7.2 and 0.7.4 ebuilds depend on qemu and qemu-kvm which are mutually blocking. Cannot emerge libvirt due to unresolved dependencies. Reproducible: Always Steps to Reproduce: 1. USE="qemu -kvm" emerge -av libvirt Actual Results: Ebuild cannot be installed because it's pulling qemu and qemu-kvm which are mutually blocking. Expected Results: It should install fine without any KVM support. The ebuild can be fixed when changing the dependency information: -qemu? ( app-emulation/qemu-kvm >=app-emulation/qemu-0.10.0 ) +qemu? ( !app-emulation/qemu-kvm >=app-emulation/qemu-0.10.0 ) I'm not sure if this is the desired result. At least it fixes the problem for me and still works as expected when running Qemu virtual machines
The proposed solution won't work if you have USE="kvm qemu" ebuild needs USE-flag clean up! Important: Don't depend on KVM if not desired! I have a CPU without virtualization support therefore I don't want any KVM cruft in my virtualization environment.
Here a solution that should also work with USE="kvm qemu" -qemu? ( app-emulation/qemu-kvm >=app-emulation/qemu-0.10.0 ) +qemu? ( !kvm? ( !app-emulation/qemu-kvm >=app-emulation/qemu-0.10.0 ) ) If you have USE="kvm qemu" it will pull qemu-kvm, if you have USE="-kvm qemu" it will pull only qemu
The problem is that someone got sloppy in their hurry to abandon KVM. Since abandoning the 'kvm' namespace, app-emulation/qemu-kvm now blocks app-emulation/qemu*, and the following broken dependency was introduced to app-emulation/libvirt: qemu? ( app-emulation/qemu-kvm >=app-emulation/qemu-0.10.0 ) Which _should_ have been qemu? || ( app-emulation/qemu-kvm app-emulation/qemu-0.10.0 ) 10 seconds of QA, people.
Meh, missed a set of parens: qemu? ( || ( app-emulation/qemu-kvm app-emulation/qemu-0.10.0 ) )
(In reply to comment #4) > Meh, missed a set of parens: > > qemu? ( || ( app-emulation/qemu-kvm app-emulation/qemu-0.10.0 ) ) > Fixed in portage. Sorry it took me so damn long to get this fixed. 23 Dec 2009; Lance Albertson <ramereth@gentoo.org> libvirt-0.7.2.ebuild, libvirt-0.7.4.ebuild, libvirt-0.7.4-r1.ebuild, libvirt-0.7.4-r2.ebuild: Fix qemu dep to resolve package blocking issue between qemu and qemu-kvm when both qemu and kvm USE flags are enabled #294179
