Package: aptitude Version: 0.8.11-3 Severity: important Starting aptitude fails due to a missing Xapian symbol:
$ aptitude aptitude: symbol lookup error: aptitude: undefined symbol: _ZN6Xapian4MSetC1EOS0_ This is probably a bug in the syms in the applicable xapian library package causing aptitude to get a library dependency that is too weak. In particular, my system has a recent version of aptitude with an older version of libxapian30, so there was probably a new symbol introduced in libxapian30 without adjusting the shared library dependency information. $ apt-cache policy aptitude aptitude: Installed: 0.8.11-3 Candidate: 0.8.11-6 Version table: 0.8.11-6 500 500 http://mirrors.xmission.com/debian testing/main amd64 Packages 500 http://mirrors.xmission.com/debian unstable/main amd64 Packages *** 0.8.11-3 100 100 /var/lib/dpkg/status 0.8.7-1 990 990 http://mirrors.xmission.com/debian stable/main amd64 Packages $ apt-cache policy libxapian30 libxapian30: Installed: 1.4.3-2+deb9u2 Candidate: 1.4.3-2+deb9u2 Version table: 1.4.9-1 500 500 http://mirrors.xmission.com/debian testing/main amd64 Packages 500 http://mirrors.xmission.com/debian unstable/main amd64 Packages *** 1.4.3-2+deb9u2 990 990 http://mirrors.xmission.com/debian stable/main amd64 Packages 100 /var/lib/dpkg/status -- Package-specific info: Terminal: xterm-256color $DISPLAY is set. which aptitude: /usr/bin/aptitude aptitude version information: aptitude linkage: linux-vdso.so.1 (0x00007ffdbd4e5000) libapt-pkg.so.5.0 => /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0 (0x00007f7386abf000) libncursesw.so.6 => /lib/x86_64-linux-gnu/libncursesw.so.6 (0x00007f7386a85000) libtinfo.so.6 => /lib/x86_64-linux-gnu/libtinfo.so.6 (0x00007f7386a57000) libsigc-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libsigc-2.0.so.0 (0x00007f7386850000) libcwidget.so.3 => /usr/lib/x86_64-linux-gnu/libcwidget.so.3 (0x00007f738674a000) libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 (0x00007f7386629000) libboost_iostreams.so.1.62.0 => /usr/local/lib/libboost_iostreams.so.1.62.0 (0x00007f738660a000) libboost_system.so.1.62.0 => /usr/lib/x86_64-linux-gnu/libboost_system.so.1.62.0 (0x00007f7386605000) libxapian.so.30 => /usr/lib/x86_64-linux-gnu/libxapian.so.30 (0x00007f73861f1000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f73861d0000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f738604d000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f7385eca000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f7385eae000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f7385ced000) libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007f7385cd3000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f7385ab5000) libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007f7385aa2000) liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f738587c000) liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f7385668000) libzstd.so.1 => /usr/lib/x86_64-linux-gnu/libzstd.so.1 (0x00007f73855cd000) libudev.so.1 => /lib/x86_64-linux-gnu/libudev.so.1 (0x00007f73855ac000) /lib64/ld-linux-x86-64.so.2 (0x00007f7387101000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f73855a7000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f738559d000) libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f7385396000) -- System Information: Debian Release: 9.6 APT prefers stable APT policy: (990, 'stable'), (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.19.0-1-amd64 (SMP w/8 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages aptitude depends on: ii aptitude-common 0.8.11-3 ii libapt-pkg5.0 1.8.0~alpha2 ii libboost-iostreams1.62.0 1.62.0+dfsg-10 ii libboost-system1.62.0 1.62.0+dfsg-10 ii libc6 2.28-4 ii libcwidget3v5 0.5.17-11 ii libgcc1 1:8.2.0-13 ii libncursesw6 6.1+20181013-1 ii libsigc++-2.0-0v5 2.10.0-1 ii libsqlite3-0 3.25.3-2 ii libstdc++6 8.2.0-13 ii libtinfo6 6.1+20181013-1 ii libxapian30 1.4.3-2+deb9u2 Versions of packages aptitude recommends: ii libparse-debianchangelog-perl 1.2.0-12 ii sensible-utils 0.0.9+deb9u1 Versions of packages aptitude suggests: ii apt-xapian-index 0.49 pn aptitude-doc-en | aptitude-doc <none> pn debtags <none> ii tasksel 3.39 -- no debconf information