Haskell

Haskell is an advanced purely-functional programming language. An open-source product of more than twenty years of cutting-edge research, it allows rapid development of robust, concise, correct software. With strong support for integration with other languages, built-in concurrency and parallelism, debuggers, profilers, rich libraries and an active community, Haskell makes it easier to produce flexible, maintainable, high-quality software.

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Planet Haskell https://wiki.haskell.org/wikiupload/7/7c/Rss16.png, The Monad.Reader
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2026
- March
  - GHC 9.12.4 is released

2025
- December
  - GHC 9.12.3 is released
  - GHC 9.14.1 is released
- September
  - GHC 9.10.3 is released
- July
  - GHC LTS Releases announced
- May
  - GHC 9.10.2 is released
- March
  - GHC 9.6.7 is released
  - GHC 9.12.2 is released
- January
  - Darcs 2.18.5 is released

2024
- December
  - Stackage: LTS 23 release for ghc-9.8 and Nightly now on ghc-9.10
- November
  - GHC 9.12.1 is released
- October
  - Darcs 2.18.4 is released (changelog)
  - GHC 9.8.3 is released
- July
  - GHC 9.6.6 is released
- May
  - GHC 9.10.1 is released
- February
  - GHC 9.8.2 is released

2023
- November
  - GHC 9.4.8 is released
- October
  - GHC 9.8.1 is released
- September
  - GHC 9.6.3 is released
- August:
  - GHC 9.4.6 is released
- June
  - Stackage LTS 21.0 is released with GHC 9.4.5
  - Stackage Nightly moves to GHC 9.6
- May
  - GHC 9.2.8 is released
  - GHC 9.6.2 is released
- April
  - GHC 9.4.5 is released

Upcoming Events

The 31st ACM SIGPLAN International Conference on Functional Programming (ICFP 2026): 2026-08-24 – 2026-08-29, Indianapolis, Indiana, USA

12th International Workshop on Rewriting Techniques for Program Transformations and Evaluation (WPTE 2026): Affiliated with FLoC 2026 and FSCD 2026 in Lisbon, Portugal; 2026-07-19

19th ACM SIGPLAN International Conference on Software Language Engineering (SLE 2026): 2026-07-02 – 2026-07-03, Rennes, France

Haskell Implementors' Workshop 2026: Co-located with ZuriHac 2026 and Haskell Ecosystem Workshop 2026; 2026-06-05, Rapperswil-Jona, Switzerland

Google Summer of Code: Start coding: (Frequently asked questions); 2026-05-25

Google Summer of Code: Community Bonding Period: (Frequently asked questions); 2026-05-01 – 2026-05-24

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Recent Events

The Midlands Graduate School 2026 (MGS 2026): 2026-04-13 – 2026-04-17, Nottingham, UK

Google Summer of Code: contributor application deadline: (Frequently asked questions); 2026-03-31

BOB 2026: Conference; “What happens if we simply use what’s best?”; 2026-03-13, Berlin, Germany

North American Haskell Hackathon in New York (AmeriHac 2026): 2026-02-07 – 2026-02-08, New York City, New York, USA

Trends in Functional Programming (TFP 2026): Co-located with TFPIE 2026; 2026-01-27 – 2026-01-29, University of Southern Denmark in Odense, Denmark

Trends in Functional Programming in Education (TFPIE 2026): Co-located with TFP 2026; 2026-01-26, University of Southern Denmark in Odense, Denmark

ACM SIGPLAN Workshop on Partial Evaluation and Program Manipulation (PEPM 2026): Co-located with POPL 2026; 2026-01-13 Rennes, France

53rd ACM SIGPLAN Symposium on Principles of Programming Languages (POPL 2026): 2026-01-11 – 2026-01-17 Rennes, France

Functional Programming Day 2026: 2026-01-09 Nijmegen, The Netherlands

Recent Package Updates https://wiki.haskell.org/wikiupload/b/bf/MHvNV.png https://wiki.haskell.org/wikiupload/7/7c/Rss16.png

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