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

• Reanimate v1.0 by David Himmelstrup

  It is my great pleasure to announce version 1.0 of the Reanimate animation library. Reanimate aims to be a batteries-included way of creating animations and illustrations.

• Strategic Deriving by Kowainik

  But what exactly is deriving, how does it work and what pitfalls can it bring? What are deriving strategies and how do you get a habit of using them regularly?

• Sockets and Pipes by Type Classes

  Sockets and Pipes is not an introduction to Haskell; it is an introduction to writing software in Haskell.

• Lazy Sort: Counting Comparisons by Jasper Van der Jeugt

  How good is Haskell’s lazy sort actually?

• Don’t use Ghcide anymore (directly) by Neil Mitchell

  I recommend people use the Haskell Language Server IDE.

• MuniHac 2020 videos

  This year due to the ongoing Corona situation, MuniHac will take place as a two-day online event filled with Haskell talks and workshops. The talks will be streamed and you can watch them here.

Jobs

• Senior Haskell Engineer at TVision

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

In brief

• Haskell’s Children by Owen Lynch

  I find myself simply not as excited about Haskell as I used to be. What changed?

• In the computer by Chris Martin

  When people talk about “algebraic reasoning”, explanations fall flat because we neglect to first figure out kind of reasoning we’re contrasting it against.

• MuniHac 2020 by Well-Typed

  We enjoyed attending virtual MuniHac and would like to thank our co-organisers TNG for all the work they put into planning, hosting and and running the event.

• Optimised Row Columnar for Haskell by Huw Campbell

  I are proud to announce a new Apache ORC library for Haskell which I am releasing as open source under the Affero General Public License.

Show & tell

• base16-bytestring version 1.0.0.0 Emily Pillmore

  This release marks an epochal change in the library’s structure, changing some existing features, and adding others.

• ghcup version 0.1.11 by Julian Ospald

  This release adds haskell-language-server (hls) to ghcup.

• stm-actor & stm-queue by Samuel Schlesinger

  Released stm-actor, something I’d been chewing on for a while, and stm-queue to accompany it in order to get better worst-case latency for reads than TQueue.

Call for participation

• persistent: SQLite: FOREIGN KEY constraint failed when migrating