I think there are times when a distribution should be removed from CPAN entirely. If a distribution doesn't appear to be used, and there are other dists providing the same functionality which are being used, then I think we can consider removing it from CPAN. In this post I'll describe why it's good for CPAN if appropriate distributions are removed, how to decide what distributions should be removed, and suggest a process for distribution removal.

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I've extended the CPAN adoption list to factor in results from CPAN Testers. This caused 6 dists to move up into the top 20.

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I've added an adoption leaderboard to my CPAN adoption list. Kudos to Ron Savage who chipping away at the adoption list.

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I had a patch accepted which adds an is_core() function to Module::CoreList. This was my first attempt at modifying a core module. This post describes the function, why I wanted it, and my experience adding it to a core module. And then fixing the bug I introduced!

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Iterating over all dists on CPAN

CPANPAUSEiteratorsJSON Sat 14 September 2013

I recently released a new version of my PAUSE::Packages module, which caches information about releases on CPAN and makes it easy to iterate over it. In this post I'll cover the motivation for this module, why I decided to transform the existing PAUSE export file, and how David Golden nudged me to use JSON.

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When creating a CPAN distribution, all the modules should come under a single namespace. If your Foo-Bar distribution has a lead module Foo::Bar, then in almost all cases, all other modules in your distribution should be in the Foo::Bar::* namespace. In this post I'll explain why.

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As I described in a recent post, I discovered that my Module::Path module has rather more dependent distributions than I thought. Awareness of this has changed my behaviour, for the good.

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CPAN in one sentence

CPANfunny Wed 21 August 2013

This line, taken from the documentation for Class::Tiny, sums up one facet of CPAN perfectly!

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The CPAN buddy system

CPANBuddyculturecommunity Fri 16 August 2013

This is an idea for encouraging new contributors to CPAN. When someone uploads their first ever module to CPAN, a volunteer buddy would be assigned. This would be a more experienced CPAN author who would email them "hi, saw your just uploaded your first module — awesome! Let me know if you have any questions, in the meantime here are some good resources about modules, CPAN and the perl community". Of course that could be done automatically, but the human connection would make a lot of difference, I believe.

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While working on my adoption metric I've been looking at the number of distributions dependent on each distribution. Today I built the full dependency graph, so I could count the total number of dependencies. Or as ETHER put it: "how many other distributions will you break if you break yours?" It turns out 70% of CPAN distributions aren't used by any other distribution.

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