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Jakob Voss edited this page May 15, 2014 · 26 revisions

This guide has been written to help anyone interested in contributing to the development of Catmandu. Please read this guide before contributing to Catmandu or related projects, to avoid wasted effort and maximizing the chances of your contributions being used.

WAYS TO CONTRIBUTE

There are many ways to contribute to the project. Catmandu is a young yet active project and any kind of help is very much appreciated!

Publicity

You don't have to start by hacking the code, spreading the word is very valuable as well!

If you have a blog, just feel free to speak about Catmandu.

Of course, it doesn't have to be limited to blogs or Twitter. Feel free to spread the word in whatever way you consider fit and drop us a line on the Catmandu user mailing list noted below.

Also, if you're using and enjoying Catmandu, rating us on cpanratings.perl.org, explaining what you like about Catmandu is another very valuable contribution that helps other new users find us!

Mailing list

Subscribing to the mailing list and providing assistance to new users is incredibly valuable.

Documentation

We value documentation very much, but it's difficult to keep it up-to-date. If you find a typo or an error in the documentation please do let us know - ideally by submitting a patch (pull request) with your fix or suggestion (see "Patch Submission").

Code

To contribute to Catmandu's core code, see "Patch Submission" below. You can also extend the functionality by new Importers, Exporters, Stores, Fix packages, Validators, Binds, or Plugins. Have a look at the list of missing modules for existing ideas and resources for new Catmandu modules. Feel also free to add new ideas and links there.

GENERAL DEVELOPMENT GUIDELINES

This section lists high-level recommendations for developing Catmandu, for more detailed guidelines, see the Coding guidelines.

Quality Assurance

Catmandu should be able to install for all Perl versions since 5.10.1, on any platform for which Perl exists. We focus mainly on GNU/Linux (any distribution).

You should avoid regressions as much as possible and keep backwards compatibility in mind when refactoring. Stable releases should not break functionality and new releases should provide an upgrade path and upgrade tips such as warning the user about deprecated functionality.

Quality Supervision and Reporting Bugs

We can measure our quality using the CPAN testers platform: http://www.cpantesters.org.

A good way to help the project is to find a failing build log on the CPAN testers: http://www.cpantesters.org/distro/D/Catmandu.html

If you find a failing test report or another kind of bug, feel free to report it as a GitHub issue: http://github.com/LibreCat/Catmandu/issues. Please make sure the bug you're reporting does not yet exist.

ENVIRONMENT AND PATCH SUBMISSION

Set up a development environment

If you want to submit a patch for Catmandu, you need git and very likely also milla (Dist::Milla). We also recommend perlbrew (see below) to test and develop Catmandu on a recent version of perl. We also suggest App::cpanminus) to quickly and comfortably install perl modules under perlbrew.

In the following sections we provide tips for the installation of some of these tools together with Catmandu. Please also see the documentation that comes with these tools for more info.

Perlbrew tips (Optional)

Install perlbrew for example with

cpanm App::perlbrew

Check which perls are available

perlbrew available

At the time of writing it looks like this

perl-5.18.0
perl-5.16.3
perl-5.14.4
perl-5.12.5
perl-5.10.1
perl-5.8.9
perl-5.6.2
perl5.005_04
perl5.004_05
perl5.003_07

Then go on and install a version inside Perlbrew. I recommend you give a name to the installation (--as option), as well as compiling without the tests (--n option) to speed it up.

perlbrew install -n perl-5.16.3 --as catmandu_dev -j 3

Wait a while, and it should be done. Switch to your new Perl with:

perlbrew switch catmandu_dev

Now you are using the fresh Perl, you can check it with:

which perl

Install cpanm on your brewed version of perl.

perlbrew install-cpanm

Install dependencies (required)

this section needs to be rewritten to reflect the change to Dist::Milla

Get Catmandu sources

Get the Catmandu sources from github (for a more complete git workflow see below):

Clone your fork to have a local copy using the following command:

$ git clone git@github.com:LibreCat/Catmandu.git

The installation is then straight forward:

$ cd Catmandu
$ perl Build.PL
$ ./Build
$ ./Build test
$ ./Build install

Patch Submission (Github workflow)

See Patch submission

RESOURCES FOR DEVELOPERS

Website

The official website is here: http://librecat.org/

Mailing Lists

A mailing list is available here: librecat-dev@mail.librecat.org

Repositories

The official repository is hosted on GitHub at http://github.com:LibreCat/Catmandu.

Official developers have write access to this repository, contributors are invited to fork the dev branch (!) and submit a pull request.

Acknowledgement

This guide is heavily based on Dancer2::Development.

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