media-libs/libpng-1.5.14 had its SLOT variable changed from 0/15 to 0 without a revbump. Portage tries to downgrade to 1.5.13-r1 and rebuild all users of the library. I assume this is because the users depend on the 15 subslot and hence need to be rebuild if the subslot changes to 0. What I do not understand is why portage also wants to downgrade libpng itself... Reproducible: Always # emerge --info Portage 2.2.0_alpha162 (default/linux/amd64/13.0/desktop/kde, gcc-4.7.2, glibc-2.16.0, 3.7.6-gentoo x86_64) ================================================================= System uname: Linux-3.7.6-gentoo-x86_64-AMD_Athlon-tm-_64_X2_Dual_Core_Processor_5000+-with-gentoo-2.2 KiB Mem: 6108400 total, 2826064 free KiB Swap: 7813116 total, 7813116 free Timestamp of tree: Wed, 13 Feb 2013 04:45:01 +0000 ld GNU ld (GNU Binutils) 2.23.1 distcc 3.2rc1 x86_64-pc-linux-gnu [disabled] app-shells/bash: 4.2_p42 dev-java/java-config: 2.1.12-r1 dev-lang/python: 2.7.3-r3, 3.2.3-r2 dev-util/cmake: 2.8.10.2-r2::kde dev-util/pkgconfig: 0.28 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.11.8 sys-apps/sandbox: 2.6 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.9.6-r3, 1.10.3, 1.11.6, 1.12.6, 1.13.1 sys-devel/binutils: 2.23.1 sys-devel/gcc: 4.7.2 sys-devel/gcc-config: 1.8 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.7 (virtual/os-headers) sys-libs/glibc: 2.16.0 Repositories: gentoo systemd local enlightenment kde sunrise g-ctan ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-pipe -O2 -march=athlon64-sse3" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/polkit-1/actions /usr/share/themes/oxygen-gtk/gtk-2.0 /usr/share/themes/oxygen-gtk/gtk-3.0 /var/lib/neatx/home" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /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="-pipe -O2 -march=athlon64-sse3" DISTDIR="/var/cache/portage/distfiles" EMERGE_DEFAULT_OPTS="--depclean-lib-check=n --with-bdeps=y --keep-going --nospinner" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs buildsyspkg compressdebug config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://ftp.spline.inf.fu-berlin.de/mirrors/gentoo/ http://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/ http://distfiles.gentoo.org" LANG="en_GB.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu" MAKEOPTS="-j3" PKGDIR="/var/cache/portage/packages" PORTAGE_COMPRESS="xz" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/var/cache/portage/gentoo" PORTDIR_OVERLAY="/var/lib/layman/systemd /var/cache/portage/local /var/cache/portage/overlays/enlightenment /var/cache/portage/overlays/kde /var/cache/portage/overlays/sunrise /var/lib/g-ctan" [...] Unset: CPPFLAGS, CTARGET, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Please attach a debug log, created as follow: emerge [arguments] --pretend --debug > debug.log 2>&1 xz -9 debug.log
See also: http://forums.gentoo.org/viewtopic.php?p=7245774#7245774
(In reply to comment #1) > Please attach a debug log, created as follow: > > emerge [arguments] --pretend --debug > debug.log 2>&1 > xz -9 debug.log Can't attach it, because it is too large. Please see the URL. See also: http://kynes.de/~dschridde/debug.log.xz
Created attachment 338824 [details] debug log for backtracking try 3 During backtracking try 3, it does not handle the slot conflict correctly. It seems like a regression due to this change: http://git.overlays.gentoo.org/gitweb/?p=proj/portage.git;a=commit;h=0240b8b754ab5f642c50c863d4bec1dc3636ba29 The _slot_operator_update_probe method is called from _slot_conflict_backtrack_abi, and it's treating the sub-slot change as insignificant, and this triggers the slot_conflict backtracking pathway instead of the slot_conflict_abi backtracking pathway that we really want it to follow.
I haven't made a test case for this yet, because it's a tricky case to trigger. I'm pretty sure that this will fix it though: http://git.overlays.gentoo.org/gitweb/?p=proj/portage.git;a=commit;h=9ea0fe8aabca82b8e8f6d05b0cde417316b635cd
This is fixed in 2.1.11.52 and -2.2.0_alpha163.
(In reply to comment #6) > This is fixed in 2.1.11.52 and -2.2.0_alpha163. Thanks! And also thanks for being so quickly!
