Bugzilla Bug 139639

just tested emerging tribes2 as an ~amd64 ebuild and it was succesfull, I'll
attach the ebuild I used, but just changed the keyword

d'oh, scratch that, emerge failed as I was typing this

games-fps/tribes2-25034 runs great with amd64 and I see no reason for it to bee
masked on amd64.

[ebuild   R   ] games-fps/tribes2-25034 

chade ~ # emerge --info
Portage 2.1.2.3 (default-linux/amd64/2006.1/desktop, gcc-4.1.2, glibc-2.5-r1,
2.6.20-viper4 x86_64)
=================================================================
System uname: 2.6.20-viper4 x86_64 AMD Athlon(tm) 64 Processor 3400+
Gentoo Base System release 1.12.10
Timestamp of tree: Wed, 11 Apr 2007 04:20:01 +0000
ccache version 2.4 [enabled]
dev-java/java-config: 1.3.7, 2.0.31-r5
dev-lang/python:     2.4.4
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache:     2.4-r6
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: 1.3.15-r1
sys-devel/libtool:   1.5.23b
virtual/os-headers:  2.6.20-r2
ACCEPT_KEYWORDS="amd64 ~amd64"
AUTOCLEAN="yes"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -O3 -pipe"
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/gconf
/etc/java-config/vms/ /etc/php/apache1-php4/ext-active/
/etc/php/apache1-php5/ext-active/ /etc/php/apache2-php4/ext-active/
/etc/php/apache2-php5/ext-active/ /etc/php/cgi-php4/ext-active/
/etc/php/cgi-php5/ext-active/ /etc/php/cli-php4/ext-active/
/etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/splash /etc/terminfo
/etc/texmf/web2c"
CXXFLAGS="-march=k8 -O3 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="ccache distlocks metadata-transfer sandbox sfperms strict"
GENTOO_MIRRORS="ftp://ftp.public.fix.fi/gentoo/"
LANG="en_US.utf-8"
LC_ALL="en_US.UTF-8"
LINGUAS="fi en en_GB en_US"
MAKEOPTS="-j2"
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
--filter=H_**/files/digest-*"
PORTAGE_TMPDIR="/home/tmp/"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/portage/local/layman/xeffects
/usr/portage/local/layman/sunrise /usr/portage/local/layman/nouveau
/usr/local/portage"
SYNC="rsync://rsync.fi.gentoo.org/gentoo-portage"
USE="X acpi alsa amd64 apache2 automount bash-completion berkdb binary-drivers
bitmap-fonts bootsplash cairo ccache cdparanoia cdr cdrom cgi cli cracklib
crypt cups curl curlwrappers dbus dri drm dvb dvd dvdr eds emacs emboss encode
esd fam firefox foomaticdb fortran gdbm gif glibc-compat20 gpm gstreamer gtk
gtk2 hal hddtemp iconv imlib java jpeg ldap libg++ logitech-mouse mad midi
mikmod mp3 mpeg msn mysql ncurses nls no-old-linux nptl nptlonly nsplugin ogg
opengl oss pam pcre perl pertty png ppds pppd python qt3 qt4 quicktime readline
reflection samba sdl session spell spl ssl symlink tcpd tiff truetype
truetype-fonts type1-fonts unicode usb vorbis winbind xinerama xml xorg xprint
xscreensaver xv zlib" ALSA_CARDS="emu10k1" 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="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz
cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="fi en en_GB
en_US" LIRC_DEVICES="serial" USERLAND="GNU" VIDEO_CARDS="nouveau fbdev nv
nvidia vesa v4l vga"
Unset:  CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LDFLAGS, PORTAGE_COMPRESS,
PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

Reopening for Comment #2

It isn't ~amd64 for a reason.  The patching is broken on it and doesn't work
properly.  I've since made it -amd64 so hopefully nobody requests this again
until I can look at it.