NAME
   Carton - Perl module dependency manager (aka Bundler for Perl)

SYNOPSIS
     # On your development environment
     > cat cpanfile
     requires 'Plack', 0.9980;
     requires 'Starman', 0.2000;

     > carton install
     > git add cpanfile cpanfile.snapshot
     > git commit -m "add Plack and Starman"

     # Other developer's machine, or on a deployment box
     > carton install
     > carton exec starman -p 8080 myapp.psgi

AVAILABILITY
   Carton only works with perl installation with the complete set of core
   modules. If you use perl installed by a vendor package with modules
   stripped from core, Carton is not expected to work correctly.

   Also, Carton requires you to run your command/application with "carton
   exec" command, which means it's difficult or impossible to run in an
   embedded perl use case such as mod_perl.

DESCRIPTION
   carton is a command line tool to track the Perl module dependencies for
   your Perl application. Dependencies are declared using cpanfile format,
   and the managed dependencies are tracked in a *cpanfile.snapshot* file,
   which is meant to be version controlled, and the snapshot file allows
   other developers of your application will have the exact same versions
   of the modules.

TUTORIAL
 Initializing the environment
   carton will use the *local* directory to install modules into. You're
   recommended to exclude these directories from the version control
   system.

     > echo local/ >> .gitignore
     > git add cpanfile.snapshot
     > git commit -m "Start using carton"

 Tracking the dependencies
   You can manage the dependencies of your application via "cpanfile".

     # cpanfile
     requires 'Plack', 0.9980;
     requires 'Starman', 0.2000;

   And then you can install these dependencies via:

     > carton install

   The modules are installed into your *local* directory, and the
   dependencies tree and version information are analyzed and saved into
   *cpanfile.snapshot* in your directory.

   Make sure you add *cpanfile.snapshot* to your version controlled
   repository and commit changes as you update dependencies. This will
   ensure that other developers on your app, as well as your deployment
   environment, use exactly the same versions of the modules you just
   installed.

     > git add cpanfile cpanfile.snapshot
     > git commit -m "Added Plack and Starman"

 Deploying your application
   Once you've done installing all the dependencies, you can push your
   application directory to a remote machine (excluding *local* and
   *.carton*) and run the following command:

     > carton install --deployment

   This will look at the *cpanfile.snapshot* and install the exact same
   versions of the dependencies into *local*, and now your application is
   ready to run.

   The "--deployment" flag makes sure that carton will only install modules
   and versions available in your snapshot, and won't fallback to query for
   CPAN Meta DB for missing modules.

 Bundling modules
   carton can bundle all the tarballs for your dependencies into a
   directory so that you can even install dependencies that are not
   available on CPAN, such as internal distribution aka DarkPAN.

     > carton bundle

   will bundle these tarballs into *vendor/cache* directory, and

     > carton install --cached

   will install modules using this local cache. Combined with
   "--deployment" option, you can avoid querying for a database like CPAN
   Meta DB or downloading files from CPAN mirrors upon deployment time.

COMMUNITY
   <https://github.com/miyagawa/carton>
       Code repository, Wiki and Issue Tracker

   <irc://irc.perl.org/#carton>
       IRC chat room

AUTHOR
   Tatsuhiko Miyagawa

COPYRIGHT
   Tatsuhiko Miyagawa 2011-

LICENSE
   This software is licensed under the same terms as Perl itself.

SEE ALSO
   cpanm

   Bundler <http://gembundler.com/>

   pip <http://pypi.python.org/pypi/pip>

   npm <http://npmjs.org/>

   perlrocks <https://github.com/gugod/perlrocks>

   only

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