Unnamed

These are the packages that would be merged, in reverse order:

Calculating dependencies  ... done!
[nomerge      ] x11-base/xorg-server-1.6.5-r1  USE="ipv6 nptl xorg -debug -dmx -hal -kdrive -minimal -sdl -tslib" 
[nomerge      ]  x11-base/xorg-drivers-1.7  INPUT_DEVICES="evdev synaptics -acecad -aiptek -joystick -keyboard -mouse -penmount -tslib -virtualbox -vmmouse -void -wacom" VIDEO_CARDS="sis vesa -apm -ark -ast -chips -cirrus -dummy -epson -fbdev -fglrx (-geode) -glint -i128 (-i740) (-impact) -intel -mach64 -mga -neomagic (-newport) -nv -nvidia -r128 -radeon -radeonhd -rendition -s3 -s3virge -savage -siliconmotion -sisusb (-sunbw2) (-suncg14) (-suncg3) (-suncg6) (-sunffb) (-sunleo) (-suntcx) -tdfx -tga -trident -tseng -v4l -via -virtualbox -vmware (-voodoo) (-xgi)" 
[ebuild  N    ]   x11-drivers/xf86-video-vesa-2.3.0  USE="-debug" 
[ebuild  N    ]   x11-drivers/xf86-input-synaptics-1.2.1  USE="-debug -hal" 
[ebuild  N    ]   x11-drivers/xf86-video-sis-0.10.2  USE="dri -debug" 
[ebuild  N    ]   x11-drivers/xf86-input-evdev-2.3.2  USE="-debug" 
[ebuild  N    ]    x11-base/xorg-server-1.6.5-r1  USE="ipv6 nptl xorg -debug -dmx -hal -kdrive -minimal -sdl -tslib" 
[ebuild  N    ]     media-libs/mesa-7.7.1  USE="nptl xcb -debug (-gallium) -motif -pic (-selinux)" VIDEO_CARDS="sis -intel -mach64 -mga -none -nouveau -r128 -radeon -radeonhd -savage (-sunffb) -svga -tdfx -via" 
[ebuild  N    ]     x11-base/xorg-drivers-1.7  INPUT_DEVICES="evdev synaptics -acecad -aiptek -joystick -keyboard -mouse -penmount -tslib -virtualbox -vmmouse -void -wacom" VIDEO_CARDS="sis vesa -apm -ark -ast -chips -cirrus -dummy -epson -fbdev -fglrx (-geode) -glint -i128 (-i740) (-impact) -intel -mach64 -mga -neomagic (-newport) -nv -nvidia -r128 -radeon -radeonhd -rendition -s3 -s3virge -savage -siliconmotion -sisusb (-sunbw2) (-suncg14) (-suncg3) (-suncg6) (-sunffb) (-sunleo) (-suntcx) -tdfx -tga -trident -tseng -v4l -via -virtualbox -vmware (-voodoo) (-xgi)" 
[ebuild  N    ]     x11-apps/xinit-1.2.0-r3  USE="minimal pam -debug" 
[ebuild  N    ]     x11-proto/xcmiscproto-1.2.0 
[ebuild  N    ]     x11-libs/pixman-0.17.2  USE="mmx sse2 (-altivec) -debug" 
[ebuild  N    ]     x11-libs/libxkbui-1.0.2  USE="-debug" 
[ebuild  N    ]     x11-proto/xf86rushproto-1.1.2 
[ebuild  N    ]     x11-libs/libpciaccess-0.11.0  USE="zlib -debug -minimal" 
[ebuild  N    ]     x11-proto/bigreqsproto-1.1.0 
[ebuild  N    ]     x11-proto/trapproto-3.4.3 
[ebuild  N    ]     x11-proto/xineramaproto-1.2 
[ebuild  N    ]     x11-proto/xf86dgaproto-2.1 
[ebuild  N    ]     x11-libs/libdrm-2.4.18_pre20100211-r1  USE="-debug" 
[blocks B     ] <x11-base/xorg-server-1.7 ("<x11-base/xorg-server-1.7" is blocking media-libs/mesa-7.7.1)

 * Error: The above package list contains packages which cannot be
 * installed at the same time on the same system.

  ('ebuild', '/', 'x11-base/xorg-server-1.6.5-r1', 'merge') pulled in by
    =xorg-server-1.6.5-r1
    >=x11-base/xorg-server-1.0.99 required by ('ebuild', '/', 'x11-drivers/xf86-video-vesa-2.3.0', 'merge')
    >=x11-base/xorg-server-1.6 required by ('ebuild', '/', 'x11-drivers/xf86-input-synaptics-1.2.1', 'merge')
    (and 2 more)


For more information about Blocked Packages, please refer to the following
section of the Gentoo Linux x86 Handbook (architecture is irrelevant):

http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?full=1#blocked