Bug#355237: Pin-Priority: -1 doesn't work as expected

[Andreas Pakulat <apaku@gmx.de>]

Package: apt
Version: 0.6.43.3
Severity: normal

Hi,

it seems that the Pin-Priority of -1 doesn't do what it should do:

root@morpheus:/etc/apt>apt-cache policy tetex-base
tetex-base:
  Installed: (none)
  Candidate: 3.0-15
  Package pin: 3.0-15
  Version table:
     3.0-15 -1
        500 http://debian sid/main Packages
     3.0-14 -1
        500 http://debian etch/main Packages
     2.0.2c-8 -1
        500 http://debian sarge/main Packages

man apt_preferences says that the priority -1 prevents a version from
being installed. But the above output shows that all versions get the
same priority and thus the highest version would be installed. 

Have a look at my preferences file which _explicitly_ lists version
3.0.15 and assigns it the priority -1, however this has not the desired
effect.

Andreas

-- Package-specific info:

-- apt-config dump --

APT "";
APT::Architecture "i386";
APT::Build-Essential "";
APT::Build-Essential:: "build-essential";
APT::Cache-Limit "12582912";
APT::FTPArchive "";
APT::FTPArchive::MD5 "on";
Dir "/";
Dir::State "var/lib/apt/";
Dir::State::lists "lists/";
Dir::State::cdroms "cdroms.list";
Dir::State::userstatus "status.user";
Dir::State::status "/var/lib/dpkg/status";
Dir::Cache "var/cache/apt/";
Dir::Cache::archives "archives/";
Dir::Cache::srcpkgcache "srcpkgcache.bin";
Dir::Cache::pkgcache "pkgcache.bin";
Dir::Etc "etc/apt/";
Dir::Etc::sourcelist "sources.list";
Dir::Etc::sourceparts "sources.list.d";
Dir::Etc::vendorlist "vendors.list";
Dir::Etc::vendorparts "vendors.list.d";
Dir::Etc::main "apt.conf";
Dir::Etc::parts "apt.conf.d";
Dir::Etc::preferences "preferences";
Dir::Bin "";
Dir::Bin::methods "/usr/lib/apt/methods";
Dir::Bin::dpkg "/usr/bin/dpkg";
DPkg "";
DPkg::Pre-Install-Pkgs "";
DPkg::Pre-Install-Pkgs:: "if dpkg -s apt-listbugs | grep -q '^Status: .* ok installed'; then /usr/sbin/apt-listbugs apt || ( test $? -ne 10 || exit 10; echo 'Warning: apt-listbugs exited abnormally, hit enter key to continue.' 1>&2 ; read a < /dev/tty ); fi";
DPkg::Pre-Install-Pkgs:: "/usr/bin/apt-listchanges --apt || test $? -ne 10";
DPkg::Pre-Install-Pkgs:: "/usr/sbin/dpkg-preconfigure --apt || true";
DPkg::Tools "";
DPkg::Tools::Options "";
DPkg::Tools::Options::/usr/bin/apt-listchanges "";
DPkg::Tools::Options::/usr/bin/apt-listchanges::Version "2";
Aptitude "";
Aptitude::Styles "";
Aptitude::Styles::Default "";
Aptitude::Styles::Default::bg "default";
Aptitude::Purge-Unused "true";

-- /etc/apt/preferences --

Package: tetex-base
Pin: version 3.0-15
Pin-Priority: -1

-- /etc/apt/sources.list --

#Lame Encoder + mplayer + realplayer
deb http://marillat:9999/marillat/ sid main 

#Main Unstable Sites
deb http://debian:9999/debian/ sid main contrib non-free 
deb http://debian:9999/debian/ etch main contrib non-free 
#include stable sources.list for the cases when I'm not in HRO
deb http://debian:9999/debian/ sarge main contrib non-free 

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15-cherry
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)

Versions of packages apt depends on:
ii  libc6                         2.3.6-3    GNU C Library: Shared libraries an
ii  libgcc1                       1:4.0.2-9  GCC support library
ii  libstdc++6                    4.0.2-9    The GNU Standard C++ Library v3

Versions of packages apt recommends:
ii  debian-archive-keyring        2006.01.18 GnuPG archive keys of the Debian a

-- no debconf information