Bugzilla Bug 185171

>>> Install nvidia-drivers-100.14.11 into /var/tmp/portage/x11-drivers/nvidia-drivers-100.14.11/image/ category x11-drivers
 * Installing nvidia module
/usr/portage/x11-drivers/nvidia-drivers/nvidia-drivers-100.14.11.ebuild: line
298: gtk: command not found
>>> Completed installing nvidia-drivers-100.14.11 into /var/tmp/portage/x11-drivers/nvidia-drivers-100.14.11/image/

Portage 2.1.3_rc8 (default-linux/x86/2006.1/desktop, gcc-4.1.2, glibc-2.5-r3,
2.6.21-gentoo-r2 i686)
=================================================================
System uname: 2.6.21-gentoo-r2 i686 Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
Gentoo Base System release 2.0.0_alpha3
Timestamp of tree: Unknown
distcc 2.18.3 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632)
[disabled]
ccache version 2.4 [enabled]
dev-java/java-config: 1.3.7, 2.0.33-r1
dev-lang/python:     2.4.4-r4, 2.5.1-r2
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache:     2.4-r7
sys-apps/sandbox:    1.2.18.1
sys-devel/autoconf:  2.13, 2.61
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10
sys-devel/binutils:  2.17
sys-devel/gcc-config: 1.4.0
sys-devel/libtool:   1.5.24
virtual/os-headers:  2.6.21
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=nocona -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /opt/openjms/config /usr/kde/3.5/env
/usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/X11/xkb
/usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf
/etc/php/apache1-php5/ext-active/ /etc/php/apache2-php5/ext-active/
/etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild
/etc/splash /etc/terminfo /etc/texmf/web2c"
CXXFLAGS="-O2 -march=nocona -pipe -fomit-frame-pointer"
DISTDIR="/var/distfiles"
FEATURES="autoaddcvs ccache collision-protect cvs distlocks fixpackages
parallel-fetch sandbox sfperms sign strict unmerge-orphans userpriv usersandbox
verify-rdepend"
GENTOO_MIRRORS=" http://trumpetti.atm.tut.fi/gentoo"
LANG="en_US.utf8"
LC_ALL="en_US.utf8"
LDFLAGS="-Wl,--as-needed -Wl,-O1"
LINGUAS="fi"
MAKEOPTS="-j2"
PKGDIR="/home/pkg/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --delete-after --stats --timeout=180
--exclude=/distfiles --exclude=/local --exclude=/packages
--filter=H_**/files/digest-*"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/mnt/checkouts/overlays/betelgeuse"
SYNC="rsync://192.168.150.1/portage"
USE="a52 aac acl acpi alsa audiofile bash-completion berkdb bitmap-fonts
bluetooth branding bzip2 cairo cdb cddb cdparanoia cdr cli cracklib crypt cups
dbus dri dts dvd dvdr dvdread emboss fam ffmpeg firefox gif gstreamer hal iconv
isdnlog java jpeg kde kdeenablefinal kdehiddenvisibility libg++ libnotify
logitech-mouse mad mikmod mjpeg mmx mp3 mpeg mudflap ncurses network nptl
nptlonly nsplugin nvidia offensive ogg opengl openmp pam pcre png ppds pppd qt3
quicktime readline real reflection rtc session spell spl sse sse2 ssl
startup-notification subversion svg symlink theora threads truetype
truetype-fonts type1-fonts udev unicode usb userlocales vim-syntax vorbis x86
xcb xcomposite xinerama xml xorg xv xvid xvmc zlib" ALSA_CARDS="hda-intel"
ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file
hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route
share shm softvol" ELIBC="glibc" INPUT_DEVICES="mouse keyboard evdev"
KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001
mtxorb ncurses text" LINGUAS="fi" USERLAND="GNU" VIDEO_CARDS="none nvidia"
Unset:  CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, PORTAGE_COMPRESS,
PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

The bug is quite obvious:
        if gtk; then

fixed.