Provided by: dose-distcheck_4.0.2-4_amd64 
NAME
dose-distcheck - check installability of packages according to metadata
SYNOPSIS
dose-distcheck [option] ... uri
dose-debcheck [option] ... [file]
dose-rpmcheck [option] ... [file]
dose-eclipsecheck [option] ... [file]
DESCRIPTION
dose-distcheck determines, for a set of package control stanzas, called the repository,
whether packages of the repository can be installed relative to the repository according
to the inter-package relationsships expressed in the package control stanzas. The exact
set of relevant control fields and their meaning depends on the type of the repository.
The constraint solving algorithm is complete, that is it finds a solution whenever there
exists one, even for multiple disjunctive dependencies and deep package conflicts. This
problem is computationally infeasible in theory (that is, NP-complete), but can be solved
very efficiently for package repositories that actually occur in practice.
Packages are split into foreground and background: only packages in the foreground are
checked for installability, but dependencies may be satisfied by foreground packages and
by background packages. By default, all packages are in the foreground.
Input Specification
Currently supported input types are debian, rpm, and eclipse. The dose-distcheck tool
expects its input specifiations in the form type://pathname where type is one of deb,
synthesis, hdlist or eclipse, and pathname is the pathname of a file containing the input.
The package metadata found in that file must correspond to the type given in the URI.
When invoked as dose-typecheck then the type of input is assumed to be type, and
repositories (in positional arguments or in the values of options --fg and --bg) are
simply given in form of a pathname of a file containing the repository. If no positional
argument is given then input is read from standard input. dose-distcheck also compressed
files (.gz , .bz2) as positional arguments. Input read on standard input cannot be in
compressed form.
Input Formats
Debian
The input file has to contain stanzas in the format of deb-control(5), separated by one
blank line. For instance, the Packages files as found on a Debian mirror server, or in the
directory /var/lib/apt/lists/ of a Debian system, are suitable as input to dose-debcheck.
Installability of packages is analyzed according to their Depends, Conflicts, and Provides
fields with their meaning as of Debian policy version 3.9.0. Pre-depends are treated like
Depends, and Breaks are treated like Conflicts.
If the input contains several packages with the same values of name, version, and
architecture than only the last of these is taken into account, and a warning is issued.
In the case of Debian, it is not possible to install at the same time two packages with
the same name but different versions.
Rpm
The input file can be either a synthesis file or a hdlist file. By default dose-rpmcheck
expects a synthesis file as input. To specify a hdlist file dose-distcheck must be invoked
with a file argument of the form hdlist://
Eclipse
The input is an 822 file containing the encoding of OSGi plugins content.xml files.
Cv
Internal use only. Undocumented.
OPTIONS
OPTIONS CONTROLLING FOREGROUND AND BACKGROUND
--fg=file
Add packages in file to the foreground.
--bg=file
Add packages in file to the background.
--checkonly package [,package] ...
Takes a comma-separated list of package names, each of them possibly with a
version constraint, as argument. The foreground is constituted of all packages
that match any of the expressions, all other packages are pushed into the
background. The initial distinction between foreground and background is ignored.
This option must not be combined with --coinst.
Example: --checkonly "libc6 , 2ping (= 1.2.3-1)"
--coinst package [,package] ...
Takes a comma-separated list of package names, each of them possibly with a
version constraint, as argument. If this list consists of n expressions, then co-
installability will be checked independently for each set of n packages where the
i-th element of the set matches the i-th expression. The initial distinction
between foreground and background is ignored. This option must not be combined
with --checkonly.
Example: --coinst "a (>1), b"
If we have package a in versions 1, 2 and 3, and package b in versions 11 and 12,
then this will check 4 pairs of packages for co-installability, namely (a=2,b=11),
(a=2,b=12), (a=3,b=11) and (a=3,b=12).
DEBIAN SPECIFIC OPTIONS
Multi-arch annotations are correctly considered by distcheck. Packages whose's
architecture is neither the native architecture nor in the list of foreign architectures
(see below) are ignored.
--deb-native-arch=name
Specify the native architecture. The default behavior is to deduce the native
architecture from the first package stanza in the input that has an architecture
different from all.
--deb-foreign-archs=name [,name] ...
Specify a comma-separated list of foreign architectures. The default is an empty
list of foreign architectures.
--deb-ignore-essential
Do not consider essential packages as part of the installation problem. By
default all essential package are considered as part of the installation problem
for all packages, that is a package is installable if and only if it is co-
installable with all essential packages. This option allows the user to test the
installability with no essential packages installed.
OPTIONS FOR FILTERING THE INPUT
--latest
Only the latest version of each package is kept, older versions of packages are
ignored.
OPTIONS CONTROLLING OUTPUT
-f, --failures
List all packages that are found not to be installable.
-s, --successes
List all packages that are found to be installable. May be used together with
--failures, in this case the value of the status field in the output allows one to
distinguish installable from non-installable packages.
-e, --explain
Give explanations. If used together with --failures then the explanation consists
of dependency chains leading to a conflict or a dependency on a missing package.
If used together with --successes then the explanation consists of an installation
set.
-m, --explain-minimal
For all packages P that are found installable, and when used in conjunction with
--successes, prints a reduced installation set containing only those packages in
the dependency cone of P. When used with Debian repositories, all essential
packages and their dependencies that are not in the cone of P are omitted. When
used in conjunction with --failures, and --explain, all dependencies chains are
not printed.
--summary
Gives a more detailed summary of the findings.
-o file Send output to file.
MISC OPTIONS
-v Enable info / warnings / debug messages. This option may be repeated up to three
times in order to increase verbosity.
--quiet Do not print warning messages
--progress
Show progress bars.
--timers
Show timing information.
-h, --help
Display this list of options.
--version
Show program version and exit.
EXIT CODES
Exit codes 0-63 indicate a normal termination of the program, codes 64-127 indicate
abnormal termination of the program (such as parse errors, I/O errors).
In case of normal program termination:
- exit code 0 indicates that all foreground packages are found installable;
- exit code 1 indicates that at least one foreground package is found uninstallable.
EXAMPLE
Check which packages in a particular distribution are not installable and why:
dose-distcheck -v -f -e \
--bg deb:///var/lib/apt/lists/ftp.fr.debian.org_debian_dists_sid_main_binary-amd64_Packages\
--bg deb:///var/lib/apt/lists/ftp.fr.debian.org_debian_dists_sid_non-free_binary-amd64_Packages\
--fg deb:///var/lib/apt/lists/ftp.fr.debian.org_debian_dists_sid_contrib_binary-amd64_Packages
where Packages is the file pertaining to that distribution, as for instance found in the
directory /var/lib/apt/lists.
Check which packages in contrib are not installable when dependencies may be satisfied
from main:
dose-debcheck --failures --bg=main_Packages contrib_Packages
NOTE
Dose-distcheck is a complete reimplementation of edos-debcheck, written for the EDOS
project.
AUTHOR
The first version of debcheck was written by Jerome Vouillon for the EDOS project. The
current version has been rewritten on the basis of the dose3 library by Pietro Abate.
SEE ALSO
deb-control(5)
<http://www.edos-project.org> is the home page of the EDOS project.
<http://www.mancoosi.org> is the home page of the Mancoosi project.
2016-01-03 DISTCHECK(1)