I was away for two weeks and now one of my systems cannot be updated due
to  conflicts.  The entire (long) emerge output is at the end of
this msg.


------------------  The first conflict is -------------------


!!! Multiple package instances within a single package slot have been pulled
!!! into the dependency graph, resulting in a slot conflict:

dev-lang/perl:0

  (dev-lang/perl-5.16.3::gentoo, installed) pulled in by
    dev-lang/perl:0/5.16=[-build(-)] required by 
(net-analyzer/net-snmp-5.7.3_pre3::gentoo, installed)

  (dev-lang/perl-5.18.2-r1::gentoo, ebuild scheduled for merge) pulled in by
    =dev-lang/perl-5.18* required by 
(virtual/perl-File-Spec-3.400.0-r2::gentoo, installed)
    (and 1 more with the same problem)

----------------------------------------

I can't follow this.  For one thing net-snmp-5.7.3_pre3.ebuild does not
contain the string "lang" and I looked at all occurrences of "perl" in
the ebuild and don't see how dev-lang/perl-5.16.3 is required.

------------------  The second conflict is ------------

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

  (media-video/ffmpeg-1.2.6-r1::gentoo, ebuild scheduled for merge) pulled in by
    
>=media-video/ffmpeg-1.2.6-r1:0[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?]
 (>=media-video/ffmpeg-1.2.6-r1:0[abi_x86_64(-)]) required by 
(media-plugins/gst-plugins-ffmpeg-0.10.13_p201211-r2::gentoo, ebuild scheduled 
for merge)

  (media-video/libav-9.14::gentoo, installed) pulled in by
    
>=media-video/libav-9.12[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?,X?,encode?,gsm?,jpeg2k?,mp3?,opus?,sdl?,speex?,theora?,threads?,truetype?,vaapi?,vdpau?,x264?]
 (>=media-video/libav-9.12[abi_x86_64(-),X,encode,mp3,sdl,truetype,x264]) 
required by (virtual/ffmpeg-9-r1::gentoo, installed)

---------------------------------------------------

I don't understand this since it looks to me that virtual/ffmpeg-9-r1
wants EITHER media-video/ffmpeg OR media-video/libav.  So if
gst-plugins-ffmpeg requires ffmpeg, why isn't virtual/ffmpeg satisfied,
i.e., why does it require that media-video/libav remain installed?

-------------- The entire emerge command and output follows
Note that I have
EMERGE_DEFAULT_OPTS="--ask --deep --tree --verbose --jobs --load-average=5"

e6510 ~ # emerge --update --changed-use --deep  @world

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

Calculating dependencies... done!
[nomerge       ] gnome-base/gnome-3.12.0:2.0  USE="bluetooth cdr classic cups 
extras -accessibility" 
[nomerge       ]  gnome-base/gnome-extra-apps-3.12.0:3.0  USE="games shotwell 
tracker" 
[ebuild     U  ]   media-video/cheese-3.12.2-r1:0/7 [3.12.2:0/7] 
USE="introspection {-test}" 0 kB
[nomerge       ] app-office/libreoffice-bin-4.2.5.2  USE="gnome (-aqua) -java 
-kde" PYTHON_SINGLE_TARGET="python2_7 -python3_3 (-python3_4)" 
PYTHON_TARGETS="python2_7 python3_3 (-python3_4)" 
[ebuild   R    ]  dev-libs/redland-1.0.16  USE="berkdb xml -iodbc -mysql -odbc 
-postgres -sqlite -static-libs (-ssl%*)" 1,587 kB
[ebuild     U  ] app-admin/syslog-ng-3.4.8 [3.4.7] USE="ipv6 pcre ssl systemd 
tcpd -amqp% -caps -dbi -geoip -json -mongodb -pacct% -smtp -spoof-source" 3,096 
kB
[ebuild     UD ] www-client/firefox-24.7.0 [30.0] USE="alsa dbus gstreamer jit 
libnotify minimal pulseaudio startup-notification -bindist -custom-cflags 
-custom-optimization -debug (-pgo) (-selinux) -system-cairo -system-icu 
-system-jpeg -system-sqlite {-test} -wifi (-hardened%)" LINGUAS="-af -ak% -ar 
-as -ast -be -bg -bn_BD -bn_IN -br -bs -ca -cs -csb -cy -da -de -el -en_GB 
-en_ZA -eo -es_AR -es_CL -es_ES -es_MX -et -eu -fa -fi -fr -fy_NL -ga_IE -gd 
-gl -gu_IN -he -hi_IN -hr -hu -hy_AM -id -is -it -ja -kk -km -kn -ko -ku -lg% 
-lt -lv -mai -mk -ml -mr -nb_NO -nl -nn_NO -nso% -or -pa_IN -pl -pt_BR -pt_PT 
-rm -ro -ru -si -sk -sl -son -sq -sr -sv_SE -ta -ta_LK% -te -th -tr -uk -vi 
-zh_CN -zh_TW -zu (-xh%)" 117,162 kB
[ebuild     U  ] www-servers/apache-2.2.27-r4:2 [2.2.27:2] USE="ldap ssl -debug 
-doc (-selinux) -static -suexec -threads" APACHE2_MODULES="actions alias 
auth_basic auth_digest authn_alias authn_anon authn_dbm authn_default 
authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner 
authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache 
env expires ext_filter file_cache filter headers include info log_config logio 
mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id 
userdir usertrack vhost_alias -asis -authn_dbd -cern_meta -charset_lite -dbd 
-dumpio -ident -imagemap -log_forensic -proxy -proxy_ajp -proxy_balancer 
-proxy_connect -proxy_ftp -proxy_http -proxy_scgi -reqtimeout -substitute 
-version" APACHE2_MPMS="-event -itk -peruser -prefork -worker" 68 kB
[ebuild     U  ] sys-apps/man-pages-3.69 [3.67] USE="nls" LINGUAS="-da -de -fr 
-it -ja -nl -pl -ro -ru -zh_CN" 1,237 kB
[nomerge       ] gnome-base/gnome-extra-apps-3.12.0:3.0  USE="games shotwell 
tracker" 
[ebuild   R    ]  app-misc/tracker-1.0.2:0/100  USE="exif flac gif gstreamer 
gtk iso jpeg miner-fs mp3 nautilus pdf tiff upower%* vorbis xml -cue (-eds) 
-ffmpeg -firefox-bookmarks -gsf -iptc -networkmanager -playlist -rss {-test} 
-thunderbird -upnp-av -xmp -xps (-laptop%)" 0 kB
[nomerge       ] www-client/firefox-24.7.0 [30.0] USE="alsa dbus gstreamer jit 
libnotify minimal pulseaudio startup-notification -bindist -custom-cflags 
-custom-optimization -debug (-pgo) (-selinux) -system-cairo -system-icu 
-system-jpeg -system-sqlite {-test} -wifi (-hardened%)" LINGUAS="-af -ak% -ar 
-as -ast -be -bg -bn_BD -bn_IN -br -bs -ca -cs -csb -cy -da -de -el -en_GB 
-en_ZA -eo -es_AR -es_CL -es_ES -es_MX -et -eu -fa -fi -fr -fy_NL -ga_IE -gd 
-gl -gu_IN -he -hi_IN -hr -hu -hy_AM -id -is -it -ja -kk -km -kn -ko -ku -lg% 
-lt -lv -mai -mk -ml -mr -nb_NO -nl -nn_NO -nso% -or -pa_IN -pl -pt_BR -pt_PT 
-rm -ro -ru -si -sk -sl -son -sq -sr -sv_SE -ta -ta_LK% -te -th -tr -uk -vi 
-zh_CN -zh_TW -zu (-xh%)" 
[ebuild  NS    ]  media-plugins/gst-plugins-meta-0.10-r9:0.10 [1.0-r2:1.0] 
USE="X a52 aac alsa cdda dts dvd ffmpeg flac mp3 mpeg ogg pulseaudio vorbis 
x264 xv xvid -dv -dvb -http -jack -lame -libass -libvisual -mms -musepack -opus 
-oss -taglib -theora -v4l -vcd -vpx -wavpack" ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild  N     ]   media-plugins/gst-plugins-ffmpeg-0.10.13_p201211-r2:0.10  
USE="orc" ABI_X86="(64) (-32) (-x32)" 4,199 kB
[ebuild  N     ]    media-video/ffmpeg-1.2.6-r1  USE="X aac alsa bzip2 encode 
hardcoded-tables iconv mmx mp3 network pulseaudio sdl truetype vorbis x264 xvid 
zlib -3dnow -3dnowext -aacplus (-altivec) -amr -avx -bindist -bluray -cdio 
(-celt) -cpudetection -debug -doc -examples -faac -fdk -flite -fontconfig 
-frei0r -gnutls -gsm -iec61883 -ieee1394 -jack -jpeg2k -libass -libcaca 
-libsoxr -libv4l -mmxext -modplug (-neon) -openal -openssl -opus -oss -pic 
-rtmp -schroedinger -speex -ssse3 -static-libs {-test} -theora -threads 
-twolame -v4l -vaapi -vdpau (-vis) -vpx" ABI_X86="(64) (-32) (-x32)" 
FFTOOLS="aviocat cws2fws ffescape ffeval fourcc2pixfmt graph2dot ismindex 
pktdumper qt-faststart trasher" 0 kB
[ebuild  NS    ]   media-plugins/gst-plugins-mpeg2dec-0.10.19-r1:0.10 
[1.2.4-r1:1.0] ABI_X86="(64) (-32) (-x32)" 862 kB
[ebuild  NS    ]   media-plugins/gst-plugins-pulse-0.10.31-r1:0.10 
[1.2.4-r1:1.0] ABI_X86="(64) (-32) (-x32)" 2,674 kB
[nomerge       ] games-strategy/wesnoth-1.10.7  USE="dbus nls -dedicated -doc 
-server" 
[nomerge       ]  media-libs/sdl-net-1.2.8  USE="-static-libs" 
[ebuild     U ~]   media-libs/libsdl-1.2.15-r8 [1.2.15-r7] USE="X alsa joystick 
opengl pulseaudio sound video xv -aalib -custom-cflags -dga -fbcon -libcaca 
-nas -oss -static-libs -tslib -xinerama" ABI_X86="(64) -32 (-x32)" 3,829 kB
[nomerge       ] gnome-extra/gnome-shell-extensions-3.12.2  USE="-examples" 
[nomerge       ]  gnome-base/gnome-shell-3.12.2  USE="bluetooth i18n 
networkmanager (-openrc-force)" PYTHON_TARGETS="python2_7" 
[nomerge       ]   gnome-base/gnome-control-center-3.12.1-r1:2  USE="bluetooth 
colord cups gnome-online-accounts i18n -debug -kerberos -v4l" 
INPUT_DEVICES="-wacom" 
[ebuild     U  ]    x11-misc/colord-1.2.1-r1:0/2 [1.2.1:0/2] USE="gusb 
introspection policykit systemd udev -examples -extra-print-profiles -scanner 
-vala" 0 kB
[ebuild     U  ]     virtual/libudev-215-r1:0/1 [208:0/1] USE="systemd%* 
(-static-libs)" ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild     U  ]     virtual/libgudev-215-r1 [208] USE="introspection systemd%* 
(-static-libs)" ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild     U  ]      sys-apps/systemd-215-r3:0/2 [212-r5:0/2] USE="acl 
filecaps firmware-loader gudev introspection kmod pam policykit seccomp -audit 
-cryptsetup -doc -elfutils% -gcrypt -http (-kdbus) -lzma -python -qrcode 
(-selinux) (-ssl) {-test} -vanilla (-xattr%)" ABI_X86="(64) (-32) (-x32)" 
PYTHON_SINGLE_TARGET="python2_7 -python3_2 -python3_3 (-python3_4)" 
PYTHON_TARGETS="python2_7 python3_3 -python3_2 (-python3_4)" 2,821 kB
[ebuild     U  ] net-misc/dhcpcd-6.4.3 [6.2.0-r1] USE="ipv6 udev" 147 kB
[nomerge       ] www-servers/apache-2.2.27-r4:2 [2.2.27:2] USE="ldap ssl -debug 
-doc (-selinux) -static -suexec -threads" APACHE2_MODULES="actions alias 
auth_basic auth_digest authn_alias authn_anon authn_dbm authn_default 
authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner 
authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache 
env expires ext_filter file_cache filter headers include info log_config logio 
mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id 
userdir usertrack vhost_alias -asis -authn_dbd -cern_meta -charset_lite -dbd 
-dumpio -ident -imagemap -log_forensic -proxy -proxy_ajp -proxy_balancer 
-proxy_connect -proxy_ftp -proxy_http -proxy_scgi -reqtimeout -substitute 
-version" APACHE2_MPMS="-event -itk -peruser -prefork -worker" 
[ebuild     U  ]  dev-libs/apr-util-1.5.3-r2:1 [1.5.3-r1:1] USE="berkdb gdbm 
ldap -doc -freetds -mysql -nss -odbc -openssl -postgres -sqlite -static-libs" 
680 kB
[nomerge       ] net-print/hplip-3.14.1  USE="X fax hpcups libnotify policykit 
qt4 scanner snmp -doc -hpijs -kde -libusb0 -minimal -parport -static-ppds" 
PYTHON_SINGLE_TARGET="python2_7 (-python2_6)" PYTHON_TARGETS="python2_7 
(-python2_6)" 
[ebuild     U  ]  virtual/udev-215 [208-r2] USE="systemd%* (-gudev%*) 
(-introspection%*) (-static-libs%)" ABI_X86="(-32%) (-64%*) (-x32%)" 0 kB
[nomerge       ] gnome-base/gnome-extra-apps-3.12.0:3.0  USE="games shotwell 
tracker" 
[nomerge       ]  net-analyzer/gnome-nettool-3.8.1  USE="-debug" 
[nomerge       ]   net-analyzer/nmap-6.25  USE="gtk ipv6 lua nls ssl -ncat 
-ndiff -nmap-update -nping" LINGUAS="-de -es -fr -hr -hu -id -it -ja -pl -pt_BR 
-pt_PT -ro -ru -sk -zh" 
[ebuild   R    ]    net-libs/libpcap-1.5.3  USE="dbus ipv6 -bluetooth* -canusb 
-netlink -static-libs" 628 kB
[ebuild  NS    ] sys-kernel/gentoo-sources-3.14.14:3.14.14 [3.10.32:3.10.32, 
3.11.1:3.11.1, 3.12.13:3.12.13, 3.12.20:3.12.20, 3.12.21-r1:3.12.21-r1] 
USE="-build -deblob -experimental -symlink" 76,945 kB
[nomerge       ] sys-apps/logwatch-7.4.0_p170-r1 
[nomerge       ]  dev-perl/DateManip-6.410.0  USE="{-test}" 
[nomerge       ]   virtual/perl-Storable-2.450.0 
[ebuild     U ~]    perl-core/Storable-2.450.0-r1 [2.450.0] 180 kB
[nomerge       ] app-text/texlive-2013  USE="X png truetype xml -cjk -context 
-detex -dvi2tty -dvipdfm -epspdf -extra -games -graphics -humanities -jadetex 
-luatex -metapost -music -omega -pdfannotextractor -pstricks -publishers 
-science -tex4ht -texi2html -xetex -xindy" LINGUAS="en -af -ar -as -bg -bn -br 
-ca -cs -cy -da -de -el -en_GB -eo -es -et -eu -fa -fi -fr -ga -gl -gu -he -hi 
-hr -hsb -hu -hy -ia -id -is -it -ja -kn -ko -la -lo -lt -lv -ml -mn -mr -nb 
-nl -nn -no -or -pa -pl -pt -rm -ro -ru -sa_IN -sco -sk -sl -sq -sr -sv -ta -te 
-th -tk -tr -uk -vi -zh" 
[nomerge       ]  dev-texlive/texlive-genericrecommended-2013  USE="-doc 
-source" 
[nomerge       ]   app-text/texlive-core-2013-r1  USE="X -cjk -doc -source -tk 
-xetex" 
[nomerge       ]    virtual/perl-Getopt-Long-2.420.0-r1 
[nomerge       ]     perl-core/Getopt-Long-2.420.0 
[ebuild     U  ]      virtual/perl-Pod-Parser-1.600.0 [1.510.0-r2] 0 kB
[nomerge       ] app-office/libreoffice-bin-4.2.5.2  USE="gnome (-aqua) -java 
-kde" PYTHON_SINGLE_TARGET="python2_7 -python3_3 (-python3_4)" 
PYTHON_TARGETS="python2_7 python3_3 (-python3_4)" 
[ebuild     U  ]  dev-libs/boost-1.52.0-r7:0/1.52 [1.52.0-r6:0/1.52] USE="nls 
threads -debug -doc -icu -mpi -python -static-libs -tools" 
PYTHON_TARGETS="python2_7 python3_3 -python3_2" 53,147 kB
[nomerge       ] net-print/hplip-3.14.1  USE="X fax hpcups libnotify policykit 
qt4 scanner snmp -doc -hpijs -kde -libusb0 -minimal -parport -static-ppds" 
PYTHON_SINGLE_TARGET="python2_7 (-python2_6)" PYTHON_TARGETS="python2_7 
(-python2_6)" 
[nomerge       ]  net-analyzer/net-snmp-5.7.3_pre3  USE="X bzip2 ipv6 ssl tcpd 
zlib -doc -elf -lm_sensors -mfd-rewrites -minimal -mysql -netlink -pci -perl 
-python -rpm (-selinux) -ucd-compat" PYTHON_SINGLE_TARGET="python2_7 
(-python2_6)" PYTHON_TARGETS="python2_7 (-python2_6)" 
[nomerge       ]   dev-lang/perl-5.16.3:0/5.16  USE="berkdb gdbm -debug -doc 
-ithreads" 
[ebuild     U  ]    app-admin/perl-cleaner-2.16 [2.15] 6 kB
[nomerge       ] media-plugins/gst-plugins-meta-0.10-r9:0.10 [1.0-r2:1.0] 
USE="X a52 aac alsa cdda dts dvd ffmpeg flac mp3 mpeg ogg pulseaudio vorbis 
x264 xv xvid -dv -dvb -http -jack -lame -libass -libvisual -mms -musepack -opus 
-oss -taglib -theora -v4l -vcd -vpx -wavpack" ABI_X86="(64) (-32) (-x32)" 
[ebuild  NS    ]  media-plugins/gst-plugins-cdparanoia-0.10.36-r1:0.10 
[1.2.4-r1:1.0] ABI_X86="(64) (-32) (-x32)" 2,309 kB
[nomerge       ] gnome-base/gnome-extra-apps-3.12.0:3.0  USE="games shotwell 
tracker" 
[nomerge       ]  gnome-extra/gnome-documents-3.12.1 
[nomerge       ]   app-misc/tracker-1.0.2:0/100  USE="exif flac gif gstreamer 
gtk iso jpeg miner-fs mp3 nautilus pdf tiff upower%* vorbis xml -cue (-eds) 
-ffmpeg -firefox-bookmarks -gsf -iptc -networkmanager -playlist -rss {-test} 
-thunderbird -upnp-av -xmp -xps (-laptop%)" 
[ebuild     U  ]    app-i18n/enca-1.14-r2 [1.14-r1] USE="recode -doc" 
ABI_X86="(64) -32 (-x32)" 548 kB
[nomerge       ] media-plugins/gst-plugins-meta-0.10-r9:0.10 [1.0-r2:1.0] 
USE="X a52 aac alsa cdda dts dvd ffmpeg flac mp3 mpeg ogg pulseaudio vorbis 
x264 xv xvid -dv -dvb -http -jack -lame -libass -libvisual -mms -musepack -opus 
-oss -taglib -theora -v4l -vcd -vpx -wavpack" ABI_X86="(64) (-32) (-x32)" 
[ebuild  NS    ]  media-plugins/gst-plugins-flac-0.10.31-r1:0.10 [1.2.4-r1:1.0] 
ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild  N     ]  media-plugins/gst-plugins-vorbis-0.10.36-r1:0.10  
ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild  NS    ]  media-plugins/gst-plugins-a52dec-0.10.19-r1:0.10 
[1.2.4-r1:1.0] USE="orc" ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild  N     ]  media-plugins/gst-plugins-ogg-0.10.36-r1:0.10  ABI_X86="(64) 
(-32) (-x32)" 0 kB
[ebuild  NS    ]  media-plugins/gst-plugins-faad-0.10.23-r1:0.10 [1.2.4-r1:1.0] 
ABI_X86="(64) (-32) (-x32)" 3,082 kB
[ebuild  N     ]  media-plugins/gst-plugins-alsa-0.10.36-r1:0.10  ABI_X86="(64) 
(-32) (-x32)" 0 kB
[ebuild  N     ]  media-plugins/gst-plugins-xvideo-0.10.36-r1:0.10  
ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild  NS    ]  media-plugins/gst-plugins-dts-0.10.23-r1:0.10 [1.2.4-r1:1.0] 
USE="orc" ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild  NS    ]  media-plugins/gst-plugins-dvdread-0.10.19-r1:0.10 
[1.2.4-r1:1.0] ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild  N     ]  media-plugins/gst-plugins-xvid-0.10.23-r1:0.10  ABI_X86="(64) 
(-32) (-x32)" 0 kB
[ebuild  N     ]  media-plugins/gst-plugins-x-0.10.36-r1:0.10  ABI_X86="(64) 
(-32) (-x32)" 0 kB
[ebuild  NS    ]  media-plugins/gst-plugins-x264-0.10.19-r1:0.10 [1.2.4-r1:1.0] 
ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild  NS    ]  media-plugins/gst-plugins-mad-0.10.19-r1:0.10 [1.2.4-r1:1.0] 
ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild  NS    ]  media-plugins/gst-plugins-resindvd-0.10.23-r1:0.10 
[1.2.4-r1:1.0] ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild  NS    ]  media-libs/gst-plugins-good-0.10.31-r1:0.10 [1.2.4-r1:1.0] 
USE="nls orc" ABI_X86="(64) (-32) (-x32)" 0 kB
[nomerge       ] media-plugins/gst-plugins-faad-0.10.23-r1:0.10 [1.2.4-r1:1.0] 
ABI_X86="(64) (-32) (-x32)" 
[ebuild  NS    ]  media-libs/gst-plugins-bad-0.10.23-r2:0.10 [1.2.4-r1:1.0] 
USE="nls orc" ABI_X86="(64) (-32) (-x32)" 6 kB
[nomerge       ] media-plugins/gst-plugins-dvdread-0.10.19-r1:0.10 
[1.2.4-r1:1.0] ABI_X86="(64) (-32) (-x32)" 
[ebuild  NS    ]  media-libs/gst-plugins-ugly-0.10.19-r1:0.10 [1.2.4-r1:1.0] 
USE="nls orc" ABI_X86="(64) (-32) (-x32)" 0 kB
[ebuild  NS    ]   media-libs/gst-plugins-base-0.10.36-r1:0.10 [1.2.4-r1:1.0] 
USE="introspection nls orc" ABI_X86="(64) (-32) (-x32)" 0 kB
[nomerge       ] gnome-extra/gnome-shell-extensions-3.12.2  USE="-examples" 
[nomerge       ]  app-admin/eselect-gnome-shell-extensions-20120911 
[nomerge       ]   gnome-base/gnome-shell-3.12.2  USE="bluetooth i18n 
networkmanager (-openrc-force)" PYTHON_TARGETS="python2_7" 
[nomerge       ]    app-accessibility/caribou-0.4.13  PYTHON_TARGETS="python2_7 
(-python2_6)" 
[nomerge       ]     dev-python/pyatspi-2.12.0  PYTHON_TARGETS="python2_7 
python3_3 -python3_2" 
[nomerge       ]      dev-python/pygobject-3.12.2:3  USE="cairo threads 
-examples {-test}" PYTHON_TARGETS="python2_7 python3_3 -python3_2 (-python3_4)" 
[nomerge       ]       dev-python/pycairo-1.10.0-r4  USE="svg xcb -doc 
-examples {-test}" PYTHON_TARGETS="python2_7 python3_3 (-python2_6) -python3_2" 
[ebuild     U  ]        dev-lang/python-3.3.5-r1:3.3 [3.3.3:3.3] USE="gdbm ipv6 
ncurses readline sqlite ssl threads xml -build -doc -examples -hardened -tk 
-wininst" 11,845 kB
[nomerge       ] gnome-base/gnome-3.12.0:2.0  USE="bluetooth cdr classic cups 
extras -accessibility" 
[nomerge       ]  gnome-base/gnome-core-apps-3.12.0:3.0  USE="bluetooth cdr 
cups" 
[nomerge       ]   gnome-base/gnome-control-center-3.12.1-r1:2  USE="bluetooth 
colord cups gnome-online-accounts i18n -debug -kerberos -v4l" 
INPUT_DEVICES="-wacom" 
[nomerge       ]    net-fs/samba-3.6.23-r1  USE="acl aio client cups fam ldap 
netapi pam readline server smbclient winbind -addns -ads -avahi -caps -cluster 
-debug -dmapi -doc -examples -ldb -quota (-selinux) -smbsharemodes -swat 
-syslog" ABI_X86="(64) (-32) (-x32)" 
[nomerge       ]     net-fs/cifs-utils-6.1-r1  USE="acl ads caps caps-ng 
-creds" 
[nomerge       ]      virtual/krb5-0-r1  ABI_X86="(64) (-32) (-x32)" 
[ebuild     U  ]       app-crypt/mit-krb5-1.12.1-r2 [1.12.1-r1] USE="keyutils 
pkinit threads -doc -openldap (-selinux) {-test} -xinetd" ABI_X86="(64) (-32) 
(-x32)" 11,670 kB
[nomerge       ] gnome-extra/gnome-documents-3.12.1 
[nomerge       ]  net-misc/gnome-online-miners-3.12.0 
[nomerge       ]   net-libs/libgfbgraph-0.2.2:0.2  USE="introspection" 
[ebuild     U  ]    dev-libs/gobject-introspection-1.40.0-r1 [1.40.0] 
USE="cairo -doctool {-test}" PYTHON_SINGLE_TARGET="python2_7" 
PYTHON_TARGETS="python2_7" 0 kB
[ebuild     U  ]     dev-lang/python-2.7.7:2.7 [2.7.6-r1:2.7] USE="gdbm ipv6 
ncurses readline sqlite ssl threads (wide-unicode) xml -berkdb -build -doc 
-examples -hardened -tk -wininst" 10,264 kB
[nomerge       ] app-office/libreoffice-bin-4.2.5.2  USE="gnome (-aqua) -java 
-kde" PYTHON_SINGLE_TARGET="python2_7 -python3_3 (-python3_4)" 
PYTHON_TARGETS="python2_7 python3_3 (-python3_4)" 
[nomerge       ]  net-misc/curl-7.36.0  USE="ipv6 ldap ssl -adns -idn -kerberos 
-metalink -rtmp -ssh -static-libs {-test} -threads" CURL_SSL="nss -axtls 
-gnutls -openssl -polarssl" 
[ebuild     U  ]   dev-libs/nss-3.16.3 [3.16] USE="cacert nss-pem -utils" 
ABI_X86="(64%*) (-32) (-x32)" 6,329 kB
[nomerge       ] gnome-base/gnome-extra-apps-3.12.0:3.0  USE="games shotwell 
tracker" 
[nomerge       ]  media-gfx/gnome-screenshot-3.12.0 
[nomerge       ]   x11-libs/gtk+-3.12.2:3  USE="X colord cups introspection 
(-aqua) -cloudprint -debug -examples {-test} -vim-syntax -wayland -xinerama" 
[nomerge       ]    x11-misc/colord-1.2.1-r1:0/2 [1.2.1:0/2] USE="gusb 
introspection policykit systemd udev -examples -extra-print-profiles -scanner 
-vala" 
[nomerge       ]     dev-util/intltool-0.50.2-r1 
[ebuild     U  ]      dev-perl/XML-Parser-2.410.0-r2 [2.410.0-r1] 233 kB
[nomerge       ] app-office/libreoffice-bin-4.2.5.2  USE="gnome (-aqua) -java 
-kde" PYTHON_SINGLE_TARGET="python2_7 -python3_3 (-python3_4)" 
PYTHON_TARGETS="python2_7 python3_3 (-python3_4)" 
[ebuild     U  ]  dev-libs/nspr-4.10.6-r1 [4.10.6] USE="-debug" ABI_X86="(64%*) 
(-32) (-x32)" 0 kB
[ebuild     U  ]  dev-lang/perl-5.18.2-r1:0/5.18 [5.16.3:0/5.16] USE="berkdb 
gdbm -debug -doc -ithreads" 13,746 kB
[nomerge       ] net-print/hplip-3.14.1  USE="X fax hpcups libnotify policykit 
qt4 scanner snmp -doc -hpijs -kde -libusb0 -minimal -parport -static-ppds" 
PYTHON_SINGLE_TARGET="python2_7 (-python2_6)" PYTHON_TARGETS="python2_7 
(-python2_6)" 
[nomerge       ]  dev-python/notify-python-0.1.1-r3  USE="-examples" 
PYTHON_TARGETS="python2_7 (-python2_6)" 
[nomerge       ]   x11-libs/libnotify-0.7.6  USE="introspection {-test}" 
[nomerge       ]    virtual/notification-daemon-0  USE="gnome" 
[nomerge       ]     gnome-base/gnome-shell-3.12.2  USE="bluetooth i18n 
networkmanager (-openrc-force)" PYTHON_TARGETS="python2_7" 
[ebuild     U  ]      sys-libs/timezone-data-2014d [2014a] USE="nls" 389 kB
[ebuild     U  ] sys-devel/gnuconfig-20140212 [20131128] 44 kB
[nomerge       ] app-office/libreoffice-bin-4.2.5.2  USE="gnome (-aqua) -java 
-kde" PYTHON_SINGLE_TARGET="python2_7 -python3_3 (-python3_4)" 
PYTHON_TARGETS="python2_7 python3_3 (-python3_4)" 
[ebuild     U  ]  sys-libs/glibc-2.19-r1:2.2 [2.17:2.2] USE="(multilib) -debug 
-gd (-hardened) -nscd -profile (-selinux) -suid -systemtap -vanilla" 19,751 kB
[blocks B      ] media-video/ffmpeg:0 ("media-video/ffmpeg:0" is blocking 
media-video/libav-9.14)

Total: 57 packages (28 upgrades, 1 downgrade, 8 new, 17 in new slots, 3 
reinstalls), Size of downloads: 349,473 kB
Conflict: 1 block (1 unsatisfied)

!!! Multiple package instances within a single package slot have been pulled
!!! into the dependency graph, resulting in a slot conflict:

dev-lang/perl:0

  (dev-lang/perl-5.16.3::gentoo, installed) pulled in by
    dev-lang/perl:0/5.16=[-build(-)] required by 
(net-analyzer/net-snmp-5.7.3_pre3::gentoo, installed)

  (dev-lang/perl-5.18.2-r1::gentoo, ebuild scheduled for merge) pulled in by
    =dev-lang/perl-5.18* required by 
(virtual/perl-File-Spec-3.400.0-r2::gentoo, installed)
    (and 1 more with the same problem)


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. You may want to try a larger value of
the --backtrack option, such as --backtrack=30, in order to see if
that will solve this conflict automatically.

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


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

  (media-video/ffmpeg-1.2.6-r1::gentoo, ebuild scheduled for merge) pulled in by
    
>=media-video/ffmpeg-1.2.6-r1:0[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?]
 (>=media-video/ffmpeg-1.2.6-r1:0[abi_x86_64(-)]) required by 
(media-plugins/gst-plugins-ffmpeg-0.10.13_p201211-r2::gentoo, ebuild scheduled 
for merge)

  (media-video/libav-9.14::gentoo, installed) pulled in by
    
>=media-video/libav-9.12[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?,X?,encode?,gsm?,jpeg2k?,mp3?,opus?,sdl?,speex?,theora?,threads?,truetype?,vaapi?,vdpau?,x264?]
 (>=media-video/libav-9.12[abi_x86_64(-),X,encode,mp3,sdl,truetype,x264]) 
required by (virtual/ffmpeg-9-r1::gentoo, installed)


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

e6510 ~ # 


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