Depends on app-emulation/xen-tools which is masked there as well... app-emulation/libvirt-0.1.3: nonsolvable depset(depends) keyword(~x86) profile (default-linux/x86/no-nptl/2.4): solutions: [ app-emulation/xen-tools ] app-emulation/libvirt-0.1.3: nonsolvable depset(rdepends) keyword(~x86) profile (default-linux/x86/no-nptl/2.4): solutions: [ app-emulation/xen-tools ] app-emulation/libvirt-0.1.4: nonsolvable depset(depends) keyword(~x86) profile (default-linux/x86/no-nptl/2.4): solutions: [ app-emulation/xen-tools ] app-emulation/libvirt-0.1.4: nonsolvable depset(rdepends) keyword(~x86) profile (default-linux/x86/no-nptl/2.4): solutions: [ app-emulation/xen-tools ] app-emulation/libvirt-0.1.7: nonsolvable depset(depends) keyword(~x86) profile (default-linux/x86/no-nptl/2.4): solutions: [ app-emulation/xen-tools ] app-emulation/libvirt-0.1.7: nonsolvable depset(rdepends) keyword(~x86) profile (default-linux/x86/no-nptl/2.4): solutions: [ app-emulation/xen-tools ]
Masked, thanks.