debian::debget(3pm) [debian man page]

Debian::Debget(3pm)					User Contributed Perl Documentation				       Debian::Debget(3pm)

NAME

       Debian::Debget - helper functions used by debget et al

SYNOPSIS

       XXX

DESCRIPTION

       These are functions used by debget and related scripts, but you can use them, too.  I will do everything possible to retain backwards
       compatibility for the interfaces documented here.

       Most of these functions will "die" if they're called in a context (scalar, list) which doesn't match what they expect.  This is so that I
       will be able to change them to return something different in the other context without breaking old code.

IMPORTABLES

       binary_package_info package
	   This function returns some information about a binary package.

	   If the package isn't found nothing is returned.  If it is found, the return value is a data structure like this:

	       $r->{$distribution}{$architecture} = $version;
	       # $distribution => 'stable', 'experimental', etc.
	       # $architecture => 'i386', 'powerpc', etc.

	   If something goes seriously wrong binary_package_info will "die".

       source_package_info package
	   This function returns some information about a source package.

	   If the package isn't found nothing is returned.  If it is found, the return value is a data structure like this:

	       $r->{$distribution} = [$version, @binary_package_list];
	       # $distribution => 'stable', 'experimental', etc.
	       # $version      => '123.4-5', etc.
	       # @binary_package_list => qw(nethack-common nethack-x11), etc.

       cmp_debian_versions v1, v2
	   This is like "cmp" for Debian package version numbers.  It is prototyped to take 2 scalar arguments, so it can be used as-is as a
	   "sort" comparison function.

       upstream_version debian-version
	   This returns the upstream version extracted from the given debian-version

       pool_dir package
	   This returns the pool directory (starting at the "pool/" level) in which files for package are stored.  package can be either a binary
	   or source package name.

SEE ALSO

       debget(1), AptPkg(3pm)

AUTHOR

       Roderick Schertler <roderick@argon.org>

perl v5.10.0							    2008-12-12						       Debian::Debget(3pm)

Config::Model::Debian::Dependency(3pm)			User Contributed Perl Documentation		    Config::Model::Debian::Dependency(3pm)

NAME

       Config::Model::Debian::Dependency - Checks Debian dependency declarations

VERSION

       version 2.021

SYNOPSIS

	use Config::Model ;
	use Log::Log4perl qw(:easy) ;
	use Data::Dumper ;

	Log::Log4perl->easy_init($WARN);

	# define configuration tree object
	my $model = Config::Model->new ;
	$model ->create_config_class (
	   name => "MyClass",
	   element => [
	       Depends => {
		   'type'	=> 'leaf',
		   'value_type' => 'uniline',
		   class => 'Config::Model::Debian::Dependency',
	       },
	   ],
	) ;

	my $inst = $model->instance(root_class_name => 'MyClass' );

	my $root = $inst->config_root ;

	$root->load( 'Depends="libc6 ( >= 1.0 )"') ;
	# Connecting to qa.debian.org to check libc6 versions. Please wait ...
	# Warning in 'Depends' value 'libc6 ( >= 1.0 )': unnecessary
	# versioned dependency: >= 1.0. Debian has lenny-security ->
	# 2.7-18lenny6; lenny -> 2.7-18lenny7; squeeze-security ->
	# 2.11.2-6+squeeze1; squeeze -> 2.11.2-10; wheezy -> 2.11.2-10; sid
	# -> 2.11.2-10; sid -> 2.11.2-11;

DESCRIPTION

       This class is derived from Config::Model::Value. Its purpose is to check the value of a Debian package dependency for the following:

       o   syntax as described in http://www.debian.org/doc/debian-policy/ch-relationships.html

       o   Whether the version specified with ">" or ">=" is necessary.  This module will check with Debian server whether older versions can be
	   found in Debian old-stable or not. If no older version can be found, a warning will be issued. Note a warning will also be sent if the
	   package is not found on madison and if the package is not virtual.

       o   Whether a Perl library is dual life. In this case the dependency is checked according to Debian Perl policy <http://pkg-
	   perl.alioth.debian.org/policy.html#debian_control_handling>.  Because Debian auto-build systems (buildd) will use the first available
	   alternative, the dependency should be in the form :

	   o   "perl (>= 5.10.1) | libtest-simple-perl (>= 0.88)" when the required perl version is available in sid. ".

	   o   "libcpan-meta-perl | perl (>= 5.13.10)" when the Perl version is not available in sid

Cache
       Queries to Debian server are cached in "~/.config_model_depend_cache" for about one month.

BUGS

       o   Virtual package names are found scanning local apt cache. Hence an unknown package on your system may a virtual package on another
	   system.

       o   More advanced checks can probably be implemented. The author is open to new ideas. He's even more open to patches (with tests).

AUTHOR

       Dominique Dumont, ddumont [AT] cpan [DOT] org

SEE ALSO

       Config::Model, Config::Model::Value, Memoize, Memoize::Expire

perl v5.14.2							    2012-11-09				    Config::Model::Debian::Dependency(3pm)