Traceback (most recent call last): File "/usr/bin/virt-install", line 32, in <module> import libvirt File "/usr/lib64/python2.6/site-packages/libvirt.py", line 16, in <module> ImportError: No module named libvirtmod [ebuild R ] app-emulation/libvirt-0.7.6-r1 USE="caps libvirtd lvm nls numa qemu -avahi -iscsi -lxc -network -nfs -openvz -parted -phyp -policykit -python -sasl (-selinux) -udev -uml -virtualbox -xen" 0 kB If the python use flag controls whether virt-install works it should not be called python because the global meaning is: - - python : Adds support/bindings for the Python language host betelgeuse # emerge --info Portage 2.1.7.16 (default/linux/amd64/10.0/no-multilib, gcc-4.3.4, glibc-2.10.1-r1, 2.6.30-gentoo-r4 x86_64) ================================================================= System uname: Linux-2.6.30-gentoo-r4-x86_64-Intel-R-_Core-TM-_i7_CPU_920_@_2.67GHz-with-gentoo-1.12.13 Timestamp of tree: Fri, 19 Mar 2010 02:45:01 +0000 app-shells/bash: 4.0_p35 dev-lang/python: 2.6.4 sys-apps/baselayout: 1.12.13 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.63-r1 sys-devel/automake: 1.10.2 sys-devel/binutils: 2.18-r3 sys-devel/gcc: 4.3.4 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6b virtual/os-headers: 2.6.30-r1 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/udev/rules.d" CXXFLAGS="-O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests distlocks fixpackages news parallel-fetch protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" LANG="fi_FI.utf8" LDFLAGS="-Wl,-O1" MAKEOPTS="-j8" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/home/betelgeuse/ebuilds" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="acl amd64 bash-completion berkdb bzip2 caps cli cracklib crypt cups cxx dri gdbm gpm iconv mmx modules mudflap ncurses network-cron nls nptl nptlonly openmp pam pcre pppd readline reflection session spl sse sse2 ssl sysfs tcpd unicode xorg zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" QEMU_USER_TARGETS="i386 x86_64" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga neomagic nv r128 radeon savage sis tdfx trident vesa via vmware voodoo" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
virt-install doesn't come from libvirt. virt-install comes from virtinst which depends on a libvirt built with python. So the behavior is correct, libvirt installs python bindings with the USE=python flag and another package uses those bindings.
Actually it appears that on someone's trek to nuke built_with_use, the depend got removed. Since certain versions of libvirt didn't have a USE=python flag and certain versions did, EAPI=2 USE depends didn't cover that case (as I've pointed on the ML).
