app-shells/dash seems to work without problems on AMD64 and should at least get KEYWORDS=~amd64. In case it has any relevance, here's my emerge --info: Portage 2.1.1_pre2-r4 (default-linux/amd64/2005.1, gcc-4.1.1/amd64-vanilla, glibc-2.4-r3, 2.6.16-ck11-non-11 x86_64) ================================================================= System uname: 2.6.16-ck11-non-11 x86_64 AMD Athlon(tm) 64 Processor 3000+ Gentoo Base System version 1.12.1 distcc 2.18.3 x86_64-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] dev-lang/python: 2.3.5-r2, 2.4.3-r1 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: [Not Present] dev-util/confcache: 0.4.2-r1 sys-apps/sandbox: 1.2.18.1 sys-devel/autoconf: 2.13, 2.60 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2 sys-devel/binutils: 2.17 sys-devel/gcc-config: 2.0.0_rc1 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.16 ACCEPT_KEYWORDS="amd64 ~amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-pipe -O2 -march=k8 -mtune=k8 -fomit-frame-pointer" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /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/eselect/compiler /etc/gconf /etc/init.d /etc/java-config/vms/ /etc/revdep-rebuild /etc/terminfo /usr/share/X11" CXXFLAGS="-pipe -O2 -march=k8 -mtune=k8 -fomit-frame-pointer" DISTDIR="/usr/distfiles" FEATURES="autoconfig confcache distlocks metadata-transfer parallel-fetch sandbox sfperms strict" GENTOO_MIRRORS="ftp://ftp.ipv6.linux.ee/pub/gentoo/distfiles/ http://ftp.linux.ee/pub/gentoo/distfiles/" LANG="en_US" LC_ALL="en_US.UTF-8" MAKEOPTS="-j1" PKGDIR="/usr/portage/packages" 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'" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage/musicbrainz-overlay /usr/local/portage /usr/portage/local/layman/fluidportage /usr/portage/local/layman/xgl-coffee" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="amd64 X a52 aac aalib alsa avi berkdb bitmap-fonts browserplugin bzip2 cddb cli crypt curl dga dlloader dri dvd emboss encode exif fastcgi fbcon ffmpeg firefox flac foomaticdb gdbm gif glut gmp gnome gphoto2 gpm gstreamer gtk gtk2 hal idn imagemagick imlib ipv6 isdnlog jbig jce joystick jpeg lcms logrotate lzo lzw lzw-tiff mad matroska mikmod mng motif mozilla mp3 mpeg mplayer musepack ncurses nptl nsplugin offensive ogg oggvorbis openal opengl pam pcre pdflib perl png pppd python qt qt3 qt4 quicktime quotas randr readline reflection rtc samba sdl session smartcard speex spell spl sqlite ssl svg theora tiff truetype truetype-fonts type1-fonts unicode usb v4l v4l2 vorbis wxwindows xgetdefault xine xml xml2 xmms xorg xpm xv xvid xvmc zlib elibc_glibc input_devices_keyboard input_devices_mouse kernel_linux userland_GNU video_cards_fglrx video_cards_vesa" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LDFLAGS, LINGUAS, PORTAGE_RSYNC_EXTRA_OPTS
~amd64, thanks!