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Bug 387139 - sys-apps/portage: emerge fails to handle simple slot conflict
Summary: sys-apps/portage: emerge fails to handle simple slot conflict
Alias: None
Product: Portage Development
Classification: Unclassified
Component: Core (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Portage team
Depends on:
Blocks: 300071
  Show dependency tree
Reported: 2011-10-14 16:40 UTC by Juergen Rose
Modified: 2013-01-14 09:00 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---

Bzip2ed result of 'emerge --debug -vD freecad > emerge--debug.log 2>&1' (emerge--debug.log.bz2,671.92 KB, text/x-bzip)
2011-10-19 14:04 UTC, Juergen Rose

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Description Juergen Rose 2011-10-14 16:40:37 UTC
'emerge freecad' fails with:

root@moose:/root(62)# emerge -vD freecad

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

Calculating dependencies... done!
[ebuild     UD ] dev-lang/swig-1.3.40-r1 [2.0.4] USE="doc -ccache (-pcre%*)" 4,777 kB
[ebuild  N     ] sci-libs/gts-20100321-r2  USE="doc examples -test" 856 kB
[ebuild  N     ] media-libs/coin-3.1.3-r1  USE="bzip2 doc threads zlib -debug -javascript -openal -simage -static-libs" 5,842 kB
[ebuild  N     ] dev-games/ode-0.11.1  USE="doc examples -debug -double-precision -gyroscopic -static-libs" 1,680 kB
[ebuild  N     ] media-libs/SoQt-1.5.0-r1  USE="doc -debug -static-libs" 1,480 kB
[ebuild  N     ] dev-python/pivy-0.5_alpha20110303  6,143 kB
[ebuild  N     ] media-gfx/freecad-0.11.3729  15,850 kB

Total: 7 packages (1 downgrade, 6 new), Size of downloads: 36,625 kB

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


  (dev-lang/swig-2.0.4::gentoo, installed) pulled in by
    (no parents that aren't satisfied by other packages in this slot)

  (dev-lang/swig-1.3.40-r1::gentoo, ebuild scheduled for merge) pulled in by
    =dev-lang/swig-1.3* required by (dev-python/pivy-0.5_alpha20110303::gentoo, ebuild scheduled for merge)

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.
Comment 1 Sebastian Luther (few) 2011-10-17 17:48:07 UTC
Please post your emerge --info.
Comment 2 Juergen Rose 2011-10-19 10:28:21 UTC
root@moose:/root(12)# emerge --info
Portage (default/linux/amd64/10.0/desktop, gcc-4.5.3, glibc-2.13-r4, 3.0.6-gentoo x86_64)
System uname: Linux-3.0.6-gentoo-x86_64-Intel-R-_Core-TM-2_Quad_CPU_Q9650_@_3.00GHz-with-gentoo-2.1
Timestamp of tree: Wed, 19 Oct 2011 08:00:01 +0000
app-shells/bash:          4.2_p10
dev-java/java-config:     2.1.11-r3
dev-lang/python:          2.7.2-r3::sage-on-gentoo, 3.2.2
dev-util/cmake:           2.8.6-r1
dev-util/pkgconfig:       0.26
sys-apps/baselayout:      2.1
sys-apps/openrc:          0.9.4
sys-apps/sandbox:         2.5
sys-devel/autoconf:       2.13, 2.68
sys-devel/automake:       1.9.6-r3, 1.10.3, 1.11.1-r1
sys-devel/binutils:       2.21.1-r1
sys-devel/gcc:            4.5.3-r1
sys-devel/gcc-config:     1.4.1-r1
sys-devel/libtool:        2.4-r3
sys-devel/make:           3.82-r3
sys-kernel/linux-headers: 2.6.39 (virtual/os-headers)
sys-libs/glibc:           2.13-r4
Repositories: gentoo science x11 arcon qting-edge bicatali zugaina sage-on-gentoo java-overlay sunrise x-portage x-cpan g-octave
ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="* -@EULA PUEL dlj-1.1 skype-eula googleearth AdobeFlash-10.1 cadsoft Oracle-BCLA-JavaSE"
CFLAGS="-march=native -O2 -pipe"
CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/maven-bin-3.0/conf /usr/share/openvpn/easy-rsa /var/lib/hsqldb"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.3/ext-active/ /etc/php/cgi-php5.3/ext-active/ /etc/php/cli-php5.3/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"
CXXFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs distlocks ebuild-locks fixlafiles news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch"
FFLAGS="-march=native -O2 -pipe"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="de fr"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTDIR_OVERLAY="/var/lib/layman/science /var/lib/layman/x11 /var/lib/layman/arcon /var/lib/layman/qting-edge /var/lib/layman/bicatali /var/lib/layman/zugaina /var/lib/layman/sage-on-gentoo /var/lib/layman/java-overlay /var/lib/layman/sunrise /usr/local/portage /var/lib/cpan /var/lib/g-octave"
USE="64bit R X Xaw3d a52 aac abiword acl acpi admin afs alsa amd64 ao apache2 applet archive arpack asf aspell assistant atlas audacious audiofile automap automount bash-completion beagle berkdb blas blast bluetooth boo boost branding bzip2 cairo cdda cddb cdf cdio cdparanoia cdr cg cgi chm cli consolekit corba cracklib crypt css cuda cups curl cxx daap db dbase dbi dbm dbus declarative designer devhelp device-mapper dga dia djvu doc dri ds2490 ds9097 ds9097u dts dv dvb dvd dvdr dvi dynamicplugin eds elf emacs emboss emf encode epiphany evo examples exif expat extensions extra extras fam fame ffmpeg fftw firefox fits flac fltk fontconfig foomaticdb fortran fortran95 fpx fts3 fuse galago garmin gcj gd gdal gdbm gdu gedit geoip geolocation geos gfortran gif gimp ginac git glade glib glpk gml gmp gmtsuppl gnome gnome-keyring gnome-print gnuplot gnutls gphoto2 gpm grammar graphics graphtft graphviz grass gs gsl gsm gstreamer gtk gudev guile harness hddtemp hdf hdf5 hdri http httpd hvm hwdb iconv icq icu id3 ide imagemagick imap innodb inotify ipod ipv6 irda ithreads jabber jadetex java java6 jbig john jpeg jpeg2k kdrive kerberos kpathsea kqemu kvm ladspa lame lapack latex latex3 lcms ldap lensfun libffi libgda libnotify libsamplerate lirc lm_sensors lua lzo mad mail maildir mapnik math matroska mkl mmx mmxext mng modules mono moonlight motif mozilla mp3 mp4 mpeg mpi mplayer mtp mudflap multilib musicbrainz mysql mysqli nautilus ncurses neXt netcdf netpbm network networking networkmanager nfs nls nntp nptl nptlonly nsplugin ntfs ntp numpy nvidia obex objc ocaml ocr octave odbc ogdi ogg ole openexr opengl openmp overview pae pam pango pcre pda pdf perl plotutils plugins png podcast policykit portaudio posix postgres postscript ppds pppd preview-latex proj projectx pstricks pulseaudio python python-bindings q16 q32 qemu qhull qt3support qt4 quicktime readline reiserfs reports rle romio rpc rrdcgi rrdtool sage samba sasl science sdk sdl secure-delete semantic-desktop server session sip slang slp smbclient smp sms sndfile snmp soup sox speex spell sql sqlite sse sse2 sse4 ssl ssse3 startup-notification stlport subtitles subversion suexec svg svm swig sysfs szip t1lib tcl tcpd tex tex4ht texmacs tgif theora threads thunderbird tidy tiff tk tools truetype udev unicode usb userlocales utempter v4l2 vaapi video virtualbox vorbis wav webdav webdav-serf webkit wifi wmf wxwidgets x264 xattr xcb xemacs xext xft xine xml xmlreader xmlrpc xorg xpm xulrunner xv xvid xvmc yaml zlib zvbi" ALSA_CARDS="intel8x0" 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 auth_digest authn_anon authn_dbd authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgid dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif so speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan stage tables krita karbon braindump" CAMERAS="canon" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="de fr" NETBEANS_MODULES="apisupport cnd dlight enterprise ergonomics groovy gsf harness ide identity j2ee java mobility nb php profiler ruby websvccommon xml" PHP_TARGETS="php5-3" QEMU_SOFTMMU_TARGETS="i386 x86_64" QEMU_USER_TARGETS="i386 x86_64" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="nv nouveau vesa" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Comment 3 Sebastian Luther (few) 2011-10-19 10:30:34 UTC
Please attach the output of your command with --debug added.
Comment 4 Juergen Rose 2011-10-19 14:04:00 UTC
Created attachment 290241 [details]
Bzip2ed result of 'emerge --debug -vD freecad > emerge--debug.log 2>&1'
Comment 5 Zac Medico gentoo-dev 2011-10-19 14:10:24 UTC
(In reply to comment #4)
> Created attachment 290241 [details]
> Bzip2ed result of 'emerge --debug -vD freecad > emerge--debug.log 2>&1'

It says "backtracking aborted after 6 tries". Have you retried it with --backtrack=30 as the emerge output suggests in comment #0?
Comment 6 Juergen Rose 2011-10-19 14:30:58 UTC
'emerge --backtrack=30 -vD freecad' installed swig-1.3.40-r1 instead of swig-2.0.4 and then tried to install sci-libs/gts-20100321-r2 which failed due to file collision with sci-chemistry/apbs-1.3-r1 (/usr/bin/smooth).
I will file a seperate bug for this.
Comment 7 Juergen Rose 2011-10-19 14:34:51 UTC
The bug with the filecollision between sci-libs/gts-20100321-r2 and sci-chemistry/apbs-1.3-r1 is Bug 387689.
Comment 8 Zac Medico gentoo-dev 2011-10-19 15:14:59 UTC
(In reply to comment #6)
> 'emerge --backtrack=30 -vD freecad' installed swig-1.3.40-r1 instead of
> swig-2.0.4

Maybe we can optimize the backtracker to solve this in fewer steps. Otherwise, we might increase the default backtracking limit from 10 to maybe 15 or 20.
Comment 9 Juergen Rose 2011-10-19 17:06:42 UTC
I do not understand, how an other limit for backtracking can help, as long there is this file collision.
Comment 10 Zac Medico gentoo-dev 2011-10-19 17:11:09 UTC
(In reply to comment #9)
> I do not understand, how an other limit for backtracking can help, as long
> there is this file collision.

The file collision has nothing to do with sys-apps/portage. We can ignore it for the purposes of this bug report.
Comment 11 Sebastian Luther (few) 2011-10-23 06:42:40 UTC
Please attach the output of your command with --backtrack=30 --debug

@Zac: Looking at the first backtrack, it masks the correct version, but later pulls this masked version in again. At this point the old version isn't in the candidate list.
Comment 12 Zac Medico gentoo-dev 2012-07-11 20:34:57 UTC
This following fix might help for this bug or similar cases:;a=commit;h=69ae09d8fce2ed23c4eca7b7af83a3b47626795e

This bug caused corruption of the backtrack nodes, causing the backtracker to bail out with out exploring potentially good solutions.