NAME
   Alien::Packages - Find information of installed packages

SYNOPSIS
       my $ap = Alien::Packages->new();

       my @packages = $ap->list_packages();
       foreach my $pkg (@packages)
       {
           print "$pkg->[0] version $pkg->[1]: $pkg->[2]\n";
       }

       my %perl_owners = $ap->list_fileowners( File::Spec->rel2abs( $^X ) );
       while( my ($fn, $pkg) = each( %perl_owners ) )
       {
           print "$fn is provided by ", join( ", ", @$pkg ), "\n";
       }

SUBROUTINES/METHODS
 new
   Instantiates new Alien::Packages object. Attributes can be specified for
   used finder (of type Module::Pluggable::Object). Additionally,

   "only_loaded"
       Use only plugins which are still loaded.

   can be specified with a true value. This forces to grep %INC instead of
   using Module::Pluggable.

 list_packages
   Lists the installed packages on the system (if the caller has the
   permission to do).

   Results in a list of array references, whereby each item contains:

     {
         PkgType => $pkg_type, # e.g. 'dpkg', 'pkgsrc', ...
         Package => $pkg_name,
         Version => $version,
         Summary => $summary,
     }

   "type" is the packager type, e.g. *rpm*, *lpp* or *pkgsrc*.

 list_fileowners
   Provides an association between files on the system and the package
   which reference it (has presumably installed it).

   Returns a hash with the files names as key and a list of referencing
   package names as value:

     '/absolute/path/to/file' =>
         [
             {
                 PkgType => $pkg_type,
                 Package => $pkg_name,
             }
         ],
     ...

AUTHOR
   Jens Rehsack, "<rehsack at cpan.org>"

GETTING HELP
   To get novice help, it's usually recommended to ask on typical platforms
   like PerlMonks. To help you make the best use of the PerlMonks platform,
   and any other lists or forums you may use, I strongly recommend that you
   read "How To Ask Questions The Smart Way" by Eric Raymond:
   <http://www.catb.org/~esr/faqs/smart-questions.html>.

   If you really asks a question what noone can answer, please drop me a
   note with the question URL to either my CPAN address or on
   "irc.perl.org" in the channels "#toolchain" or "#devops". I'll try to
   answer as best as I can (and as soon, as possible, of course).

 Where can I go for help with a concrete version?
   Bugs and feature requests are accepted against the latest version only.
   To get patches for earlier versions, you need to get an agreement with a
   developer of your choice - who may or not report the issue and a
   suggested fix upstream (depends on the license you have chosen).

 Business support and maintenance
   For business support you can contact Jens via his CPAN email address
   rehsackATcpan.org. Please keep in mind that business support is neither
   available for free nor are you eligible to receive any support based on
   the license distributed with this package.

BUGS
   This module is alpha software, the API may change in future releases.
   See Alien::Packages::Roadmap for more details.

   Please report any bugs or feature requests to "bug-alien-packages at
   rt.cpan.org", or through the web interface at
   <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Alien-Packages>. I will
   be notified, and then you'll automatically be notified of progress on
   your bug as I make changes.

SUPPORT
   You can find documentation for this module with the perldoc command.

       perldoc Alien::Packages

   You can also look for information at:

   *   RT: CPAN's request tracker

       <http://rt.cpan.org/NoAuth/Bugs.html?Dist=Alien-Packages>

   *   AnnoCPAN: Annotated CPAN documentation

       <http://annocpan.org/dist/Alien-Packages>

   *   CPAN Ratings

       <http://cpanratings.perl.org/d/Alien-Packages>

   *   Search CPAN

       <http://search.cpan.org/dist/Alien-Packages/>

   If you think you've found a bug then please also read "How to Report
   Bugs Effectively" by Simon Tatham:
   <http://www.chiark.greenend.org.uk/~sgtatham/bugs.html>.

RESOURCES AND CONTRIBUTIONS
   There're several ways how you can help to support future development:
   You can hire the author to implement the features you require at most
   (this also defines priorities), you can negotiate a support and
   maintenance contract with the company of the author and you can provide
   tests and patches. Further, you can submit documentation and links to
   resources to improve or add packaging systems or grant remote access to
   machines with insufficient supported packaging tools.

ACKNOWLEDGEMENTS
LICENSE AND COPYRIGHT
   Copyright 2010 Jens Rehsack.

   This program is free software; you can redistribute it and/or modify it
   under the terms of either: the GNU General Public License as published
   by the Free Software Foundation; or the Artistic License.

   See http://dev.perl.org/licenses/ for more information.