emerge -puNDt world

выводит такую фигню.

alex xscrew # emerge -puNDt world

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

Calculating world dependencies |
!!! Multiple versions within a single package slot have been
!!! pulled into the dependency graph:

('ebuild', '/', 'x11-proto/renderproto-0.9.2', 'merge') pulled in by
('ebuild', '/', 'x11-base/xorg-server-1.3.0.0-r1', 'merge')

('installed', '/', 'x11-proto/renderproto-0.9.3', 'nomerge') pulled in by
('installed', '/', 'x11-libs/libXrender-0.9.4', 'nomerge')

It may be possible to solve this problem by using package.mask to
prevent one of those packages from being selected. However, it is also
possible that conflicting dependencies exist such that they are
impossible to satisfy simultaneously. If such a conflict exists in the
dependencies of two different packages, then those packages can not be
installed simultaneously.

For more information, see MASKED PACKAGES section in the emerge man page
or refer to the Gentoo Handbook.

... done!
[ebuild U ] x11-base/xorg-server-1.3.0.0-r1 [1.3.0.0] USE="dri ipv6 nptl sdl xorg (-3dfx) -debug -dmx -kdrive -minimal -xprint" INPUT_DEVICES="keyboard mouse -acecad -aiptek -calcomp -citron -digitaledge -dmc -dynapro -elo2300 -elographics -evdev -fpit -hyperpen -jamstudio -joystick -magellan -microtouch -mutouch -palmax -penmount -spaceorb -summa -synaptics -tek4957 -ur98 -vmmouse -void -wacom" VIDEO_CARDS="nvidia -apm -ark -chips -cirrus -cyrix -dummy -epson -fbdev -fglrx -glint -i128 (-i740) -i810 (-impact) (-imstt) -mach64 -mga -neomagic (-newport) (-nsc) -nv -r128 -radeon -rendition -s3 -s3virge -savage -siliconmotion -sis -sisusb (-sunbw2) (-suncg14) (-suncg3) (-suncg6) (-sunffb) (-sunleo) (-suntcx) -tdfx -tga -trident -tseng -v4l -vesa -vga -via -vmware -voodoo" 0 kB
[ebuild R ] kde-base/kdelibs-3.5.8-r1 USE="acl alsa cups fam kdeenablefinal kdehiddenvisibility kerberos spell tiff -arts -avahi -branding -debug -doc -jpeg2k -legacyssl -lua -openexr -pertty% -utempter -xinerama" 0 kB [0=>1]
[ebuild U ] app-text/ghostscript-gpl-8.60-r1 [8.60] USE="X cups gtk -bindist -cjk -djvu -jpeg2k" 0 kB
[nomerge ] x11-wm/compiz-fusion-9999 USE="kde -gnome -unsupported" [1]
[nomerge ] x11-wm/emerald-9999 [1]
[ebuild U ] x11-libs/libwnck-2.18.3 [2.18.2] USE="-debug -doc" 471 kB
[nomerge ] x11-base/xorg-server-1.3.0.0-r1 [1.3.0.0] USE="dri ipv6 nptl sdl xorg (-3dfx) -debug -dmx -kdrive -minimal -xprint" INPUT_DEVICES="keyboard mouse -acecad -aiptek -calcomp -citron -digitaledge -dmc -dynapro -elo2300 -elographics -evdev -fpit -hyperpen -jamstudio -joystick -magellan -microtouch -mutouch -palmax -penmount -spaceorb -summa -synaptics -tek4957 -ur98 -vmmouse -void -wacom" VIDEO_CARDS="nvidia -apm -ark -chips -cirrus -cyrix -dummy -epson -fbdev -fglrx -glint -i128 (-i740) -i810 (-impact) (-imstt) -mach64 -mga -neomagic (-newport) (-nsc) -nv -r128 -radeon -rendition -s3 -s3virge -savage -siliconmotion -sis -sisusb (-sunbw2) (-suncg14) (-suncg3) (-suncg6) (-sunffb) (-sunleo) (-suntcx) -tdfx -tga -trident -tseng -v4l -vesa -vga -via -vmware -voodoo"
[ebuild UD] x11-libs/libXrender-0.9.2 [0.9.4] USE="-debug" 0 kB
[ebuild UD] x11-proto/renderproto-0.9.2 [0.9.3] USE="-debug" 0 kB
[ebuild U ] app-arch/unrar-3.7.8 [3.7.6] 129 kB
[ebuild U ] app-arch/cpio-2.9-r1 [2.9] USE="nls" 0 kB

Total: 8 packages (5 upgrades, 2 downgrades, 1 reinstall), Size of downloads: 599 kB
Portage tree and overlays:
[0] /usr/portage
[1] /usr/portage/local/layman/xeffects

как бороться с

!!! Multiple versions within a single package slot have been
!!! pulled into the dependency graph:

('ebuild', '/', 'x11-proto/renderproto-0.9.2', 'merge') pulled in by
('ebuild', '/', 'x11-base/xorg-server-1.3.0.0-r1', 'merge')

('installed', '/', 'x11-proto/renderproto-0.9.3', 'nomerge') pulled in by
('installed', '/', 'x11-libs/libXrender-0.9.4', 'nomerge')

??? я просто не догоняю. спасибо.