Projects

Volunteering

We are always looking for help on our projects. If you would like to volunteer, please reach out to us at volunteer@haskell.foundation, or join the Haskell Foundation Slack. If you have a proposal, we'd love to hear it!

In Progress

The Haskell Security Response Team

The Security Response Team maintains the Haskell Security Advisory Database. This database can serve as the basis for Haskell-aware tooling, and it is exported to OSV, the industry-standard data source, for use in multi-language tooling.

Project Leaders
Fraser Tweedale
Fraser Tweedale
frase+hasksec@frase.id.au
David Thrane Christiansen
David Thrane Christiansen
david@haskell.foundation

The Haskell Error Index

The Haskell Error Index is a community-driven repository of detailed documentation for Haskell errors and warnings.

Project Leads
David Thrane Christiansen
David Thrane Christiansen
david@haskell.foundation

GHC API Stability Initiative

To decrease the cost of maintaining Haskell tools, the Haskell Foundation is leading the development of a stable API to GHC by facilitating conversations between tooling developers and GHC maintainers.

GHC API Project Coordinator

GHC Platform CI

Bryan Richter is working full-time for the Haskell Foundation to improve GHC’s CI implementation, focusing on reliability and observability

Project Staff
Bryan Richter
Bryan Richter
bryan@haskell.foundation

The Haskell CI Group

The Haskell CI group meets monthly to discuss the effective use of CI with Haskell. It is a forum in which professionals can share experiences, ask each other for advice, and produce materials for the community on best practices and useful techniques.

Project Leader
Bryan Richter
Bryan Richter
bryan@haskell.foundation

Language Extension Lifecycle Framework

Haskell language extensions are the mechanism by which language research and innovation are made optional. However, it is not always easy to see which extensions are expected to change and develop, and which are finished. The Haskell Foundation’s Stability Working Group is working on a simple, understandable classification that allows teams to make informed decisions about the tradeoffs between stability and innovation and to have their stability policy reflected in compiler warnings.

Project Leaders
David Thrane Christiansen
David Thrane Christiansen
david@haskell.foundation
Trevis Elser
Trevis Elser
trevis@flipstone.com
Chris Dornan
Chris Dornan

Haskell Optimization Handbook

This book on writing fast Haskell code, including a detailed treatment of profilers and other measurement tools as well as optimization techniques that enable action based on profiles, was contributed to the HF by IOG, who continue to sponsor its writing. In addition to a describing tools and techniques, the book also provides case studies, showing how to dramatically improve the performance of real Haskell programs.

Project Leader
Jeffrey M. Young
Jeffrey M. Young
jeffrey.young@iohk.io

Hosting Stackage

The Haskell Foundation is in the process of taking over the hosting of Stackage, a widely-used repository of Haskell packages that have all been tested to work well together that was developed and hosted for many years by FPComplete.

Project Lead
Bryan Richter
Bryan Richter
bryan@haskell.foundation
Completed

2023 GHC Contributor's Workshop

In order to make it easier for new contributors to get involved with GHC, the Haskell Foundation worked with OST Eastern Switerland University of Applied Sciences and the GHC developers to organize a three-day hands-on introduction, which was attended by 43 in-person participants, nine speakers from the GHC project, and six additional volunteers from the HF, OST, and the GHC project. This hybrid-online event was recorded, and the videos are available on YouTube, where they can be a continuing resource for new GHC developers and intermediate Haskellers who want to learn more about how GHC compiles their code.

Organizers
David Thrane Christiansen
David Thrane Christiansen
david@haskell.foundation
Farhad Mehta
Farhad Mehta
farhad.mehta@ost.ch

Nightly GHC Releases in GHCUp

The Haskell Foundation coordinated a process of making nightly builds of the latest development version of GHC conveniently available in GHCUp, making it much easier for the GHC team to gather feedback, especially from closed-source applications. With nightly builds available, projects can schedule a regular CI job that checks whether recent changes with the compiler are still compatible with the codebase, allowing developers to notify the GHC team much earlier in a development cycle. Additionally, it is now much easier for the GHC team to seek feedback regarding changes to the compiler. An example repository has been created by the HF’s Stability Working Group to demonstrate the use of nightlies with scheduled jobs on CI.

Project Leaders
Julian Ospald
Julian Ospald
Matthew Pickering
Matthew Pickering
David Thrane Christiansen
David Thrane Christiansen
david@haskell.foundation

GHC Medium-Term Priority Feedback

The Haskell Foundation assisted the GHC developers with getting feedback about short- to medium-term development priorities through a deliberative process, resulting in a list of priorities. The Haskell Foundation took care of contacting the users, clarifying their answers, sorting them by topic, and summarizing and analyzing the results. The HF then worked closely with the leadership of the GHC project to produce a report detailing their plans.

Project Leader
David Thrane Christiansen
David Thrane Christiansen
david@haskell.foundation

Text-UTF8 Migration

The UTF-8 character set encoding is the industry standard. Haskell Foundation drove the effort behind the migration of the core text libraries to use UTF-8 as a default. This will have a positive effect on text performance of many Haskell programs.

Project Leaders
Andrew Lelechenko
Andrew Lelechenko
andrew.lelechenko@gmail.com
Emily Pillmore
Emily Pillmore
emily@haskell.foundation
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