Package: aptitude
Version: 0.4.11.11-1+b2
Severity: normal
Hi,
if a new version of package foo introduces a Breaks: foo (<< 1.2), but
only older versions of foo are available, aptitude full-upgrade will
suggest to downgrade foo and bar instead of keeping the current version:
% apt-cache show libdatetime-locale-perl | grep -e
% '^Version:\|^Breaks:\|^$'
Version: 1:0.45-1+ab1
Breaks: libdatetime-format-strptime-perl (<< 1.2000)
Version: 1:0.44-1
Version: 1:0.35-1+1.5.0
% apt-cache show libdatetime-format-strptime-perl | grep -e '^Version:'
Version: 1.1000-1
Version: 1.0702-2
% dpkg -l libdatetime-locale-perl | grep ii
ii libdatetime-locale-perl 1:0.44-1 [...]
# aptitude full-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done
The following packages are BROKEN:
libdatetime-locale-perl
1 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0B/2272kB of archives. After unpacking 4096B will be freed.
The following packages have unmet dependencies:
libdatetime-locale-perl: Breaks: libdatetime-format-strptime-perl
(< 1.2000) but 1.1000-1 is installed.
The following actions will resolve these dependencies:
Downgrade the following packages:
libdatetime-format-strptime-perl [1.1000-1 (testing, unstable, now) ->
1.0702-2 (stable)]
libdatetime-locale-perl [1:0.44-1 (testing, unstable, now) ->
1:0.35-1+1.5.0 (stable)]
Score is -10
Accept this solution? [Y/n/q/?] n
The following actions will resolve these dependencies:
Remove the following packages:
libcatalyst-modules-perl
libdatetime-format-builder-perl
libdatetime-format-iso8601-perl
libdatetime-format-strptime-perl
libhtml-formfu-model-dbic-perl
libhtml-formfu-perl
pak2deb
Score is -547
Accept this solution? [Y/n/q/?] n
Setting Aptitude::ProblemResolver::Discard-Null-Solution=false makes aptitude
suggest to keep the currently installed version instead of downgrading:
# aptitude -oAptitude::ProblemResolver::Discard-Null-Solution=false
full-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done
The following packages are BROKEN:
libdatetime-locale-perl
1 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0B/2272kB of archives. After unpacking 4096B will be freed.
The following packages have unmet dependencies:
libdatetime-locale-perl: Breaks: libdatetime-format-strptime-perl
(< 1.2000) but 1.1000-1 is installed.
The following actions will resolve these dependencies:
Keep the following packages at their current version:
libdatetime-locale-perl [1:0.44-1 (testing, unstable, now)]
Score is 60
Accept this solution? [Y/n/q/?]
I think aptitude should prefer to keep the currently installed version
over downgrading (at least when calling aptitude full-upgrade), even
when this means no action at all will be taken.
Regards,
Ansgar
PS: I'm not sure if this is the same issue as #338386 so I reported a
seperate bug.
-- Package-specific info:
aptitude 0.4.11.11 compiled at Aug 3 2009 16:22:21
Compiler: g++ 4.3.3
Compiled against:
apt version 4.8.0
NCurses version 5.7
libsigc++ version: 2.0.18
Ept support enabled.
Current library versions:
NCurses version: ncurses 5.7.20090803
cwidget version: 0.5.16
Apt version: 4.8.0
linux-vdso.so.1 => (0x00007fff129ff000)
libapt-pkg-libc6.9-6.so.4.8 => /usr/lib/libapt-pkg-libc6.9-6.so.4.8
(0x00007f8d38861000)
libncursesw.so.5 => /lib/libncursesw.so.5 (0x00007f8d38610000)
libsigc-2.0.so.0 => /usr/lib/libsigc-2.0.so.0 (0x00007f8d3840a000)
libcwidget.so.3 => /usr/lib/libcwidget.so.3 (0x00007f8d3813e000)
libept.so.0 => /usr/lib/libept.so.0 (0x00007f8d37ec7000)
libxapian.so.15 => /usr/lib/libxapian.so.15 (0x00007f8d37b75000)
libz.so.1 => /usr/lib/libz.so.1 (0x00007f8d3795e000)
libpthread.so.0 => /lib/libpthread.so.0 (0x00007f8d37742000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007f8d37431000)
libm.so.6 => /lib/libm.so.6 (0x00007f8d371af000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00007f8d36f99000)
libc.so.6 => /lib/libc.so.6 (0x00007f8d36c44000)
libutil.so.1 => /lib/libutil.so.1 (0x00007f8d36a41000)
libdl.so.2 => /lib/libdl.so.2 (0x00007f8d3683d000)
/lib64/ld-linux-x86-64.so.2 (0x00007f8d38b40000)
Terminal: xterm
$DISPLAY is set.
`which aptitude`: /usr/bin/aptitude
aptitude version information:
aptitude linkage:
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (900, 'testing'), (500, 'unstable'), (500, 'stable'), (1,
'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages aptitude depends on:
ii apt [libapt-pkg-libc6.9 0.7.25.3 Advanced front-end for dpkg
ii libc6 2.10.2-6 Embedded GNU C Library: Shared lib
ii libcwidget3 0.5.16-3 high-level terminal interface libr
ii libept0 0.5.30 High-level library for managing De
ii libgcc1 1:4.4.2-9 GCC support library
ii libncursesw5 5.7+20090803-2 shared libraries for terminal hand
ii libsigc++-2.0-0c2a 2.2.4.2-1 type-safe Signal Framework for C++
ii libstdc++6 4.4.2-9 The GNU Standard C++ Library v3
ii libxapian15 1.0.18-1 Search engine library
ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime
Versions of packages aptitude recommends:
ii aptitude-doc-en [aptitude-do 0.4.11.11-1 English manual for aptitude, a ter
ii libparse-debianchangelog-per 1.1.1-2 parse Debian changelogs and output
Versions of packages aptitude suggests:
ii debtags 1.7.9+b2 Enables support for package tags
ii tasksel 2.81 Tool for selecting tasks for insta
-- no debconf information
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