Haskell Weekly

Welcome to another issue of Haskell Weekly! Haskell is a safe, purely functional programming language with a fast, concurrent runtime. This is a weekly summary of what’s going on in its community.

Featured

• GHC 9.4.4 is now available! by Ben Gamari

  The GHC developers are happy to announce the availability of GHC 9.4.4. This release is primarily a bugfix release.

• Haskell Language Server 1.9.0.0 released by Zubin Duggal

• Building Pandoc with stacklock2nix by Dennis Gosnell

  This post explains how to use stacklock2nix to build Pandoc, but with a twist that Pandoc will be fully statically-linked.

• Functors as invariant functors by Mark Seemann

  It turns out that all functors are also invariant functors. Is this useful?

• Making GHC faster at emitting code by Alexis King

  For the past few months, Krzysztof Gogolewski and I have had the opportunity to work with Mercury to identify what some of those improvements might be, and I am pleased to report that our first major patch toward that end will be part of GHC 9.6.

• Synthesizing the boring parts with GHC: a research progress report by Micah Cantor

  This semester I worked with Peter-Michael Osera at Grinnell College on a project exploring how to use the Haskell GHC to generate some simple, even “obvious,” function definitions.

Jobs

Trying to hire a Haskell developer? You should advertise with us!

In brief

• CLC Election January 2023 by Andrew Lelechenko

  It’s this time of year again: the terms of three CLC members are ending in January, so we are seeking new nominations!

• Day 25 - Balanced Quinary by Monday Morning Haskell

  This is it - the last problem! I’ll be taking a bit of a break after this, but the blog will be back in January!

• Deprecating Safe Haskell, or heavily investing in it? by Théophile Choutri

  I am looking into whether or not Safe Haskell is still worth maintaining.

• Haskell Foundation DevOps Weekly Update, 2022-12-28 by Bryan Richter

  This has been a short week focused on notarization and release engineering in general.

Show & tell

• infinite-list by Andrew Lelechenko

  Modern lightweight library for infinite lists with fusion.

• tasty-autocollect version 0.4.0 by Brandon Chinn

  tasty-autocollect is an alternative to tasty-discover for auto-discovery of tests using the tasty framework.

Call for participation

• Cabal: Document which programs can be overridden with flags like –with-gcc