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Bug#685989: apt: incorrect description of Pin-Priority: 100 in man page apt_preferences



Package: apt
Version: 0.9.7.2
Severity: minor

Man page apt_preferences states:

        "0 < P <=100
        causes a version to be installed only if there is no installed version
of the   package"

However, the range appears to be 0 < P <= 99.

Depending in the point of view, this might be considered a bug of the man page
or of the executable itself. It might be worth verifiying the other priority
ranges in the man page as well.


If of interes, attached are my configuration files. The problem appeared on my
system as follows:

Debian wheezy is my standard distro (set in apt.conf) but I am using other
sources, including sid and ubuntu (for firefox). Priority between these sources
is maintained by Pinning rules in the preferences file.

A priority of 100 for "Pin: release o=Ubuntu" results in aptitude trying to
install _some_ (very few) ubuntu packages over debian packages (even of the
same upstream version).
One example for this behaviour is the defoma package.

Decreasing the priority to 99 fixes this behaviour.



-- Package-specific info:

-- apt-config dump --

APT "";
APT::Architecture "amd64";
APT::Build-Essential "";
APT::Build-Essential:: "build-essential";
APT::Install-Recommends "true";
APT::Install-Suggests "0";
APT::Authentication "";
APT::Authentication::TrustCDROM "true";
APT::NeverAutoRemove "";
APT::NeverAutoRemove:: "^firmware-linux.*";
APT::NeverAutoRemove:: "^linux-firmware$";
APT::NeverAutoRemove:: "^linux-image.*";
APT::NeverAutoRemove:: "^kfreebsd-image.*";
APT::NeverAutoRemove:: "^linux-restricted-modules.*";
APT::NeverAutoRemove:: "^linux-ubuntu-modules-.*";
APT::NeverAutoRemove:: "^gnumach$";
APT::NeverAutoRemove:: "^gnumach-image.*";
APT::Never-MarkAuto-Sections "";
APT::Never-MarkAuto-Sections:: "metapackages";
APT::Never-MarkAuto-Sections:: "restricted/metapackages";
APT::Never-MarkAuto-Sections:: "universe/metapackages";
APT::Never-MarkAuto-Sections:: "multiverse/metapackages";
APT::Never-MarkAuto-Sections:: "oldlibs";
APT::Never-MarkAuto-Sections:: "restricted/oldlibs";
APT::Never-MarkAuto-Sections:: "universe/oldlibs";
APT::Never-MarkAuto-Sections:: "multiverse/oldlibs";
APT::Periodic "";
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Download-Upgradeable-Packages "0";
APT::Periodic::AutocleanInterval "0";
APT::Update "";
APT::Update::Post-Invoke "";
APT::Update::Post-Invoke:: "touch /var/lib/apt/periodic/update-success-stamp 2>/dev/null || true";
APT::Update::Post-Invoke-Success "";
APT::Update::Post-Invoke-Success:: "[ ! -f /var/run/dbus/system_bus_socket ] || /usr/bin/dbus-send --system --dest=org.debian.apt --type=signal /org/debian/apt org.debian.apt.CacheChanged || true";
APT::Archives "";
APT::Archives::MaxAge "30";
APT::Archives::MinAge "2";
APT::Archives::MaxSize "500";
APT::Default-Release "wheezy";
APT::Architectures "";
APT::Architectures:: "amd64";
APT::Compressor "";
APT::Compressor::. "";
APT::Compressor::.::Name ".";
APT::Compressor::.::Extension "";
APT::Compressor::.::Binary "";
APT::Compressor::.::Cost "1";
APT::Compressor::gzip "";
APT::Compressor::gzip::Name "gzip";
APT::Compressor::gzip::Extension ".gz";
APT::Compressor::gzip::Binary "gzip";
APT::Compressor::gzip::Cost "2";
APT::Compressor::gzip::CompressArg "";
APT::Compressor::gzip::CompressArg:: "-9n";
APT::Compressor::gzip::UncompressArg "";
APT::Compressor::gzip::UncompressArg:: "-d";
APT::Compressor::bzip2 "";
APT::Compressor::bzip2::Name "bzip2";
APT::Compressor::bzip2::Extension ".bz2";
APT::Compressor::bzip2::Binary "bzip2";
APT::Compressor::bzip2::Cost "3";
APT::Compressor::bzip2::CompressArg "";
APT::Compressor::bzip2::CompressArg:: "-9";
APT::Compressor::bzip2::UncompressArg "";
APT::Compressor::bzip2::UncompressArg:: "-d";
APT::Compressor::xz "";
APT::Compressor::xz::Name "xz";
APT::Compressor::xz::Extension ".xz";
APT::Compressor::xz::Binary "xz";
APT::Compressor::xz::Cost "4";
APT::Compressor::xz::CompressArg "";
APT::Compressor::xz::CompressArg:: "-6";
APT::Compressor::xz::UncompressArg "";
APT::Compressor::xz::UncompressArg:: "-d";
APT::Compressor::lzma "";
APT::Compressor::lzma::Name "lzma";
APT::Compressor::lzma::Extension ".lzma";
APT::Compressor::lzma::Binary "xz";
APT::Compressor::lzma::Cost "5";
APT::Compressor::lzma::CompressArg "";
APT::Compressor::lzma::CompressArg:: "--format=lzma";
APT::Compressor::lzma::CompressArg:: "-9";
APT::Compressor::lzma::UncompressArg "";
APT::Compressor::lzma::UncompressArg:: "--format=lzma";
APT::Compressor::lzma::UncompressArg:: "-d";
APT::Compressor::::Name "";
APT::Compressor::::Extension ".";
APT::Compressor::::Binary "";
APT::Compressor::::Cost "100";
APT::Compressor::::CompressArg "";
APT::Compressor::::CompressArg:: "-9";
APT::Compressor::::UncompressArg "";
APT::Compressor::::UncompressArg:: "-d";
Dir "/";
Dir::State "var/lib/apt/";
Dir::State::lists "lists/";
Dir::State::cdroms "cdroms.list";
Dir::State::mirrors "mirrors/";
Dir::State::extended_states "extended_states";
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::netrc "auth.conf";
Dir::Etc::parts "apt.conf.d";
Dir::Etc::preferences "preferences";
Dir::Etc::preferencesparts "preferences.d";
Dir::Etc::trusted "trusted.gpg";
Dir::Etc::trustedparts "trusted.gpg.d";
Dir::Bin "";
Dir::Bin::methods "/usr/lib/apt/methods";
Dir::Bin::solvers "";
Dir::Bin::solvers:: "/usr/lib/apt/solvers";
Dir::Bin::dpkg "/usr/bin/dpkg";
Dir::Bin::bzip2 "/bin/bzip2";
Dir::Bin::xz "/usr/bin/xz";
Dir::Media "";
Dir::Media::MountPath "/media/apt";
Dir::Log "var/log/apt";
Dir::Log::Terminal "term.log";
Dir::Log::History "history.log";
Dir::Ignore-Files-Silently "";
Dir::Ignore-Files-Silently:: "~$";
Dir::Ignore-Files-Silently:: "\.disabled$";
Dir::Ignore-Files-Silently:: "\.bak$";
Dir::Ignore-Files-Silently:: "\.dpkg-[a-z]+$";
Dir::Ignore-Files-Silently:: "\.save$";
Dir::Ignore-Files-Silently:: "\.orig$";
Acquire "";
Acquire::cdrom "";
Acquire::cdrom::mount "/media/cdrom/";
Acquire::Languages "";
Acquire::Languages:: "en";
Acquire::Languages:: "none";
Acquire::Languages:: "de";
Acquire::Languages:: "de_DE";
DPkg "";
DPkg::Pre-Install-Pkgs "";
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";
DPkg::Post-Invoke "";
DPkg::Post-Invoke:: "if [ -d /var/lib/update-notifier ]; then touch /var/lib/update-notifier/dpkg-run-stamp; fi; if [ -e /var/lib/update-notifier/updates-available ]; then echo > /var/lib/update-notifier/updates-available; fi ";
Unattended-Upgrade "";
Unattended-Upgrade::Origins-Pattern "";
Unattended-Upgrade::Origins-Pattern:: "origin=Debian,archive=stable,label=Debian-Security";
CommandLine "";
CommandLine::AsString "apt-config dump";

-- /etc/apt/preferences --

#Explanation: see http://www.argon.org/~roderick/apt-pinning.html
# Also: man apt_preferences

# Wheezy (testing)
Package: *
Pin: release o=Debian,n=wheezy
Pin-Priority: 900

# Squeeze (stable)
Package: *
Pin: release o=Debian,n=squeeze
Pin-Priority: 400


# Sid (unstable)
Package: *
Pin: release o=Debian,n=sid
Pin-Priority: 300

Package: *
Pin: release o="Unofficial Multimedia Packages",n=wheezy
Pin-Priority: 850

Package: *
Pin: release o="Unofficial Multimedia Packages",n=sqeeze
Pin-Priority: 350

Package: *
Pin: release o="Unofficial Multimedia Packages",n=sid
Pin-Priority: 250


#Package: *
#Pin: origin www.debian-multimedia.org
#Pin-Priority: 600

# Ubuntu
# 0 < P <100:  causes a version to be installed only if there is no installed version of the package
Package: *
Pin: release o=Ubuntu
Pin-Priority: 99

Package: *
Pin: release o=Debian
Pin-Priority: -1

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

# 
# deb cdrom:[Debian GNU/Linux testing _Squeeze_ - Official Snapshot amd64 CD Binary-1 20091012-08:11]/ squeeze main

# SQUEEZE (stable)
deb http://ftp.de.debian.org/debian squeeze main contrib non-free 
deb http://security.debian.org/ squeeze/updates main contrib non-free
deb http://www.deb-multimedia.org squeeze main non-free 
#deb http://debian-unofficial.org/debian sqeeze main contrib non-free restricted

# Wheezy (testing)
deb http://ftp.de.debian.org/debian wheezy main contrib non-free 
deb http://www.deb-multimedia.org wheezy main non-free

# Sid (unstable)
deb http://ftp.de.debian.org/debian sid main contrib non-free 



# Ubuntu 11 Natty (for Firefox)
deb http://archive.ubuntu.com/ubuntu natty main
deb http://security.ubuntu.com/ubuntu natty-security main

# Virtualbox
deb http://download.virtualbox.org/virtualbox/debian squeeze contrib non-free

# PlayOnLinux (wheezy does not exist)
deb http://deb.playonlinux.com/ squeeze main

-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (990, 'testing'), (400, 'stable'), (300, 'unstable'), (99, 'natty-security'), (99, 'natty')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.38.8-nibbler-v100 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages apt depends on:
ii  debian-archive-keyring  2012.4
ii  gnupg                   1.4.12-4+b1
ii  libapt-pkg4.12          0.9.7.2
ii  libc6                   2.13-35
ii  libgcc1                 1:4.7.1-2
ii  libstdc++6              4.7.1-2

apt recommends no packages.

Versions of packages apt suggests:
pn  apt-doc     <none>
ii  aptitude    0.6.8-1
ii  dpkg-dev    1.16.8
ii  python-apt  0.8.4
ii  synaptic    0.75.12
ii  xz-utils    5.1.1alpha+20120614-1

-- no debconf information


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