After updating to media-libs/gst-plugins-base-0.10.24, emerge tries to delete media-libs/gst-plugins-base-0.10.24 and install again media-libs/gst-plugins-base-0.10.23 Reproducible: Always Steps to Reproduce: 1.emerge -uDN world 2. 3. Actual Results: # emerge -uDN world Calculating dependencies... done! [ebuild UD] media-libs/gst-plugins-base-0.10.23 [0.10.24] !!! Multiple package instances within a single package slot have been pulled !!! into the dependency graph, resulting in a slot conflict: media-libs/gst-plugins-base:0.10 ('ebuild', '/', 'media-libs/gst-plugins-base-0.10.23', 'merge') pulled in by <media-libs/gst-plugins-base-0.10.24 required by ('installed', '/', 'media-libs/schroedinger-1.0.5', 'nomerge') (and 52 more) ('installed', '/', 'media-libs/gst-plugins-base-0.10.24', 'nomerge') pulled in by >=media-libs/gst-plugins-base-0.10.24 required by ('installed', '/', 'media-libs/gst-plugins-bad-0.10.14', 'nomerge') >=media-libs/gst-plugins-base-0.10.24 required by ('installed', '/', 'media-plugins/gst-plugins-mimic-0.10.14', 'nomerge') (and 52 more) # emerge --info Portage 2.1.6.13 (default/linux/amd64/2008.0, gcc-4.3.2, glibc-2.9_p20081201-r2, 2.6.27-gentoo-r8 x86_64) ================================================================= System uname: Linux-2.6.27-gentoo-r8-x86_64-AMD_Athlon-tm-_64_X2_Dual_Core_Processor_3800+-with-gentoo-1.12.11.1 Timestamp of tree: Mon, 07 Sep 2009 19:30:01 +0000 app-shells/bash: 3.2_p39 dev-java/java-config: 1.3.7-r1, 2.1.8-r1 dev-lang/python: 2.5.4-r3, 2.6.2-r1 dev-python/pycrypto: 2.0.1-r8 dev-util/cmake: 2.6.4 sys-apps/baselayout: 1.12.11.1 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.13, 2.63-r1 sys-devel/automake: 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.18-r3 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 1.5.26 virtual/os-headers: 2.6.30-r1 ACCEPT_KEYWORDS="amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=k8 -O2 -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/config /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-march=k8 -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp://mirror.switch.ch/mirror/gentoo/ http://ftp.cs.pu.edu.tw/Linux/Gentoo/ http://mirror.cambrium.nl/pub/os/linux/gentoo/" LANG="C" LDFLAGS="-Wl,-O1" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/portage/local/layman/science /usr/portage/local/layman/ikelos /usr/portage/local/layman/voip /usr/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi addbookmarks addressbook aim alias alsa amd64 apache2 apm arts audiofile autoreplace bash-completion bcmath berkdb bidi blas bluetooth bzip2 cairo cdparanoia cdr cli connectionstatus consolekit contactnotes cracklib crypt cups curl curlwrappers cxx dbus dc1394 dga directfb dkim domainkeys dri dts dv dvb dvd dvdr eds emacs encode esd evo examples exif fam fastcgi fbcon ffmpeg fftw firefox flac fortran ftp gconf gd gdbm gecko ggi gif gimp ginac glut gnome gnutls gphoto2 gpm gs gstreamer gtk h281 h323 hal iconv icotools icq idn ieee1394 imagemagick imap ipv6 isdnlog jabber java javascript jpeg jpeg2k kde kdrive lapack lcms ldap leim libedit libnotify libwww lirc lm_sensors mad madwifi matroska mikmod mime mmx mng mono mp3 mpeg mpi msn mudflap mule multilib mysql mysqli nas ncurses netmeeting nls nptl nptlonly nsplugin octave ogg ole openal opengl openmp osc oscar oss pam pcre pdf perl php pipes plotutils png pppd privacy python qt3 qt3support qt4 quicktime radius readline reflection samba scanner seamonkey semantic-desktop server session shm skype sockets socks5 solver sparse spell spl sqlite sse sse2 ssl startup-notification statistics svg symlink sysfs szip tcpd testbed theora threads tidy tiff tokenizer truetype unicode urlpicpreview usb v4l v4l2 vcd vhosts vorbis webkit webpresence wifi winetools wxwindows xcap xcomposite xface xine xml xmlrpc xorg xosd xulrunner xvid yahoo zlib zrtp" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache 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" ELIBC="glibc" INPUT_DEVICES="keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIRC_DEVICES="imon" USERLAND="GNU" VIDEO_CARDS="nvidia vesa fbdev" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
It's schroedinger that's pulling in g-p-b-0.10.23. schroedinger-1.0.7-r1 does not have this problem. Take a moment to read the output next time or stop mixing stable and testing. We only try to guarantee consistent depgraphs for full ~arch or arch users.