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The Perl Foundation provides grants for work that is valuable to the Perl and Raku communities.

While we try to keep this list relevant, things can easily get out of date. Before grabbing a task, check that a similar investment is not done recently.

⚠️ Disclaimer The list does not guarantee that TPF will fund any grant proposal based on them. This is still subject to a vote.


Perl core

readpipe(LIST) (from @rjbs)

From the Perl todo:

system() accepts a LIST syntax (and a PROGRAM LIST syntax) to avoid running a shell. readpipe() (the function behind qx//) could be similarly extended.

Unused lexicals (from @rjbs)

From the Perl todo:

This warns:

$ perl -we '$pie = 42'
  Name "main::pie" used only once: possible typo at -e line 1.

This does not:

$ perl -we 'my $pie = 42'
Logically all lexicals used only once should warn, if the user asks for warnings. An unworked RT ticket (#5087) has been open for eleven years for this discrepancy.

pack and unpack on streams (from @tux)

Currently, pack and unpack work on a string, which means that you have to move forward in the data-string yourself, if the full data-format is not known in advance, but depends on data seen so far.

If one could unpack on a stream, one could unpack the picture that is known, have the stream pointer move forward the amount of data read from the given picture, and be ready to read the next data based on a next, possibly different) picture.

Extreme “win” can be taken where the size of the data being read for a given picture is differing per architecture, like native floats.

Learning Perl

Code Combat support for Perl. is a great website for introducing programming to kids. The language they use is Python by default but you can switch to other languages. This could also be a great tool for learning Perl.

When they were asked in their slack, they responded to the idea of adding Perl:

It’s a bit tricky, but doable. This is the open-source code interpreter we made for this: – to add new programming languages for CodeCombat, we add plugins to Esper to support them. A plugin consists of a parser for the language (implemented in JavaScript, parsing to Mozilla-JavaScript-compatible AST) and a JavaScript runtime that implements the needed semantic differences between normal JS behavior and the target language. That’s how we have JS, Python, CoffeeScript, Lua, Java, and C++.


PSGI protocol for HTTP::Tiny

Enhance HTTP::Tiny to support it communicating via PSGI. The primary use case being to assist in testing. See also LWP::Protocol::PSGI and Furl::PSGI.

Convert CHI::Driver::Memcached to Moo

The base CHI of the Caching Handler Interface was swapped from Moose to Moo in v0.58 (v0.60 being current). Arguably the most common Driver CHI::Driver::Memcached for Memcache still uses Moose. Swapping this driver would reduce the footprint of this common configuration and benefit everything that uses it. Other common backends might also get the same treatment as part of a grant.

Net::Google::Calendar authentication failure

This library no longer works as it uses the Calendar v2 API which Google discontinued. It needs to be updated to the new API (v3).

Module to handle OData (from Alex aka ASB)

We (the Perl community) currently do not have a CPAN module that handles OData. There seems to be an attempt to do it in OData::Client but it’s not finished yet, and I fit doesn’t get a care taker, it will never be done. Also, there is client and server parts. Let’s get both :)

Side node: Eventually, I’m too dumb to see that we don’t need one because Perl can do it out oft he box. But if this is the case, eventually, it would be a good idea to put up a grant to create a document describing how to use OData with Perl (like this one).


A regularly updated compendium of Perl IDEs to be hosted on

Results of the (survey of newcomers to Perl)[] indicate that we need a page on listing IDEs supporing Perl, indicating whether they’re being actively maintained, a brief summary of their functionality and links to where you can learn more.

This page will need to be regularly updated.

Existing attempts

The following attempts at this have not been maintained

Examples of IDEs to cover

Update PPI for more recent constructs (from @rjbs)

Last I looked, PPI couldn’t handle much newer than Perl v5.10 or v5.12. I don’t have a comprehensive list of the stuff it can’t do, but it wouldn’t be tiny. Make it all work.

Push to have Perl support in github code navigation

Github is currently the major social network for developers and provides a good exposure for the Perl modules/code and a nice tool for helping Perl developers (both coding and CI/CD through github actions or travis ci, circle ci or whatever).

Github is experimenting/putting in place the code navigation.

Below the alert to introduce this new feature to developers :

Code navigation alert

And next a real life working example :

Code navigation example

It is available since november 2019 (see the annoucement) and I guess it will grow as this feature is just a “must have” for developers (we have multiple code browsers in my company : bitbucket native, grok and woboq !).

The doc of github says that it is based on semantic which does not support Perl as of today.

Code navigation language support

The purpose of this grant would be to :

It is written in haskell (and in the past Perl and Haskell folks were good friends right ? :P)

Some resources that could help Write Yourself a Scheme in 48 hours (Haskell tutorial), a Haskell based parser for a Perl like language or a Perl 5 grepping tool or isomorphic code written in haskell.


DBIx::Class re-documentation (from @ribasushi)

Fixing up the better-than-most-but-still-terrible documentation of DBIC is a ~200 person-hour undertaking, which on top of that requires someones fresh eye.

Given that DBIx::Class is a “staple-module” in the contemporary Perl ecosystem, I believe it is reasonable to expect for the TPF to “pick up the tab” if someone with the right qualifications steps up.


Review and Recommend Standards

As a precusor to inform further work, draft a taxonomy of standards and benchmarks pertinent to accessibility for websites and their content. Make recommendations as to which should be adopted by the TPF and hopefully by well known Perl mastheads. (See also this metacpan bug)

Benchmark, assess, and plan

Benchmark and assess TPF websites and online assets based upon the approved standards. Create a plan of action with milestones and additional potential grant projects to towards compliance with the adopted standards.

Delivery on accessibility

All the milestones that will deliver on accessibility.

External site

BountySource has a few ideas on Perl


Raku core

Raku ecosystem


SparrowHub is a repository of Sparrow plugins - reusable scripts for various automation tasks. Plugins are written on many languages and get run eithor by cli or through a programmatic Raku API. Both Raku and Perl community might gain an advantage of plugins eco system easing developers life. SparrowHub could be thought as a MetaCPAN/Raku modules but with more practical approach - find a plugin and run it straight away. It’s dead easy to create new plugins and distribute them. 

So a proposal is:


The MoarVM and Rakudo CI toolchains on GitHub (using Travis CI, CircleCI, and AppVeyor) could have a number of enhancements added. Here are three things in particular:


Document Red

Provide user documentation to the revolutionary Red ORM

Add code examples

Allow adding of notes (such as code examples) with the documentation, as is done on the PHP documentation site, e.g. PHP pcre documentation page

Other areas of interest