The Toolchain Summit is only possible with support from our sponsors

The Perl Toolchain Summit (PTS) started yesterday (Thursday 11th May) in Lyon, France. 35 dedicated toolchain developers have assembled for four days of intensive discussions and co-working. Not only does a lot get done in these four days, but we send everyone home with longer todo lists, fired up to keep working on them.

The developers come from around the world, and we're only available to do this with the generous support of all of our sponsors. You've seen individual posts for our Platinum and Gold sponsors, but in this post we'd like to tell you about our other sponsors. If you get the chance, please thank them: all Perl developers benefit from this summit.

Specifying dependencies for your CPAN distribution

In this article I'm going to show you how to specify dependencies for your CPAN distributions: the other Perl and CPAN modules that your distribution relies on. This is the fourth article in a series. The first article gave a general introduction to distribution metadata. The second article introduced the five phases for which dependencies, or prerequisites, can be specified. The third article presented the types, or relationships, that can be specified for each dependency.

This article is brought to you by cPanel, Inc., a Gold sponsor for the Perl Toolchain Summit. cPanel are a well-known user and supporter of Perl, and we're very grateful for their support. More about cPanel at the end of this article.

Specifying the type of your CPAN dependencies

This is the third article in a series on CPAN distribution metadata. The first article was a general introduction, and the second article looked at dependencies, and in particular the different phases that you can specify dependencies for (configure, build, runtime, test, and develop). In this article, we'll cover the different types of dependencies and how you combine these with the phases (described in the previous article) to specify the dependencies (or prereqs) for your CPAN distribution.

This article is brought to you by MaxMind, a gold Sponsor for this year's Toolchain Summit, being held next month (May) in Lyon, France. The summit is only possible with the support of our sponsors.

The Perl Toolchain Summit Project List

The Perl Toolchain Summit (PTS) is the annual event where we assemble the people who are actively working on the Perl toolchain, and give them 4 days to work together. In this blog post, we'll look at how we decide what everyone will work on, and give you a chance to make suggestions.

This blog post is brought to you by Perl Jobs by Perl Careers, which as well as helping Perl programmers find jobs, supports a number of community events, including the QA Hackathon last year.

Dependency phases in CPAN distribution metadata

In the previous article in this series we gave a general introduction to the distribution metadata which is included in releases as files META.json and/or META.yml. In this article I'll drill into more detail at one critical component of a distribution's metadata: dependencies, also known as prerequisites (usually shortened to "prereqs"). This is how you specify other CPAN modules that your distribution depends on.

This post is brought to you by, a platinum sponsor for the Perl Toolchain Summit. is one of the largest Perl shops in the world, and so depends heavily on the toolchain. Thank you to for supporting the summit.