[Aptitude-devel] Bug#775332: aptitude: Package conflicts are reported incorrectly

[Keith Edmunds]

Package: aptitude
Version: 0.6.11-1+b1
Severity: normal

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?

I wanted to check what packages 'spamc' would pull in.

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

I ran "aptitude show spamc"

   * What was the outcome of this action?

This (partial) output:

$ aptitude show spamc
Package: spamc
State: not installed
Version: 3.4.0-5
Priority: optional
Section: mail
Maintainer: Noah Meyerhans <noahm at debian.org>
Architecture: amd64
Uncompressed Size: 186 k
Depends: libc6 (>= 2.14), libssl1.0.0 (>= 1.0.0), zlib1g (>= 1:1.1.4)
Suggests: spamassassin
Conflicts: spamassassin (< 2.30-2), spamassassin (< 2.30-2), spamc

   * What outcome did you expect instead?

I didn't expect it to list a conflict with spamassassin twice, nor did I
expect it to conflict with itself.

Note this does not appear to be a problem with the spamc package as the
output from apt-cache seems sane:

$ apt-cache show spamc|grep ^Conflicts
Conflicts: spamassassin (<< 2.30-2)


-- Package-specific info:
Terminal: xterm
$DISPLAY is set.
which aptitude: /usr/bin/aptitude

aptitude version information:
aptitude 0.6.11 compiled at Nov  8 2014 13:34:39
Compiler: g++ 4.9.1
Compiled against:
  apt version 4.12.0
  NCurses version 5.9
  libsigc++ version: 2.4.0
  Gtk+ support disabled.
  Qt support disabled.

Current library versions:
  NCurses version: ncurses 5.9.20140913
  cwidget version: 0.5.17
  Apt version: 4.12.0

aptitude linkage:
	linux-vdso.so.1 (0x00007fff62cf1000)
	libapt-pkg.so.4.12 => /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 (0x00007fdfb0c5e000)
	libncursesw.so.5 => /lib/x86_64-linux-gnu/libncursesw.so.5 (0x00007fdfb0a28000)
	libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007fdfb07fd000)
	libsigc-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libsigc-2.0.so.0 (0x00007fdfb05f7000)
	libcwidget.so.3 => /usr/lib/x86_64-linux-gnu/libcwidget.so.3 (0x00007fdfb02e1000)
	libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 (0x00007fdfb0018000)
	libboost_iostreams.so.1.55.0 => /usr/lib/x86_64-linux-gnu/libboost_iostreams.so.1.55.0 (0x00007fdfafe00000)
	libxapian.so.22 => /usr/lib/libxapian.so.22 (0x00007fdfaf9ef000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fdfaf7d1000)
	libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fdfaf4c6000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fdfaf1c5000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fdfaefae000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fdfaec05000)
	libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007fdfaea02000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fdfae7fd000)
	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fdfae5e2000)
	libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007fdfae3d2000)
	liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007fdfae1ae000)
	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fdfadfa6000)
	libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007fdfadda0000)
	/lib64/ld-linux-x86-64.so.2 (0x00007fdfb1647000)

-- System Information:
Debian Release: 8.0
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages aptitude depends on:
ii  aptitude-common           0.6.11-1
ii  libapt-pkg4.12            1.0.9.5
ii  libboost-iostreams1.55.0  1.55.0+dfsg-3
ii  libc6                     2.19-13
ii  libcwidget3               0.5.17-2
ii  libgcc1                   1:4.9.1-19
ii  libncursesw5              5.9+20140913-1+b1
ii  libsigc++-2.0-0c2a        2.4.0-1
ii  libsqlite3-0              3.8.7.1-1
ii  libstdc++6                4.9.1-19
ii  libtinfo5                 5.9+20140913-1+b1
ii  libxapian22               1.2.19-1

Versions of packages aptitude recommends:
ii  aptitude-doc-en [aptitude-doc]  0.6.11-1
ii  libparse-debianchangelog-perl   1.2.0-1.1
ii  sensible-utils                  0.0.9

Versions of packages aptitude suggests:
pn  apt-xapian-index  <none>
pn  debtags           <none>
ii  tasksel           3.29

-- no debconf information