Haskell Weekly


Issue 189 2019-12-12

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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.


  • Gluing together animations by David Himmelstrup

    Introducing Reanimate, a batteries-included way of gluing together different technologies: SVG as a universal image format, LaTeX for typesetting, ffmpeg for video encoding, inkscape/imagemagick for rasterization, potrace for vectorization, blender/povray for 3D graphics, and Haskell for scripting.

  • Haskell vs OCaml by Mark Karpov

    This is a comparison between the two languages by someone who has written code professionally in both.

  • Venzone by Francesco Ariis

    I am pleased to announce the release of Venzone, an ASCII platform/adventure game.

  • Main is not pure by Adam McCullough

    If you stick around long enough, you’ll hear something quite curious — people will describe main as a pure function.

  • Serving HTTP Content with Fused-Effects by Patrick Thomson

    I’ll show you how to use fused-effects’s APIs to build a minimal but aesthetically-pleasing syntax for handling HTTP requests and serving HTTP content.

  • Collection of Haskell Articles by Michael Oswald

    I compiled all articles into a single PDF in LaTeX book format.

  • Optics By Example by Chris Penner

    This book takes you from beginner to advanced using Lenses, Traversals, Prisms, and more!

  • Announcing the filepath-bytestring Haskell library by Joey Hess

    filepath-bytestring is a drop-in replacement for the standard Haskell filepath library, that operates on RawFilePath rather than FilePath.

  • Casa: Content-Addressable Storage Archive by Chris Done

    Casa stands for “content-addressable storage archive”, and also means “home” in romance languages, and it is an online service we’re announcing to store packages in a content-addressable way.

  • Splitting Persistent Models by Matt Parsons

    I’ve been working on this at work, and it’s made a big improvement in our overall compile-times.


  • Interos is Hiring Full Stack Haskell Software Engineers (ad)

    At Interos, we are disrupting the way Fortune 500 companies and government agencies identify and respond to risk within their supply chains. We deliver the data and insights to business leaders that help them identify, visualize and understand the ripple effects that could impact their supply chains, before they happen. Recently funded by Kleiner Perkins and pivoting to an automated solution, Interos is in essence, a start-up SaaS environment.

  • Digital Asset looking for experienced Haskellers for the Language Team in NYC (ad)

    Digital Asset is a leading provider of distributed ledger technology (DLT) that solves real-world business challenges. We combine deep industry expertise with scalable technology, including a DLT platform and an intuitive smart contract language originally developed by Digital Asset, called DAML.

  • Haskell Programmer at Layer 3 in Atlanta

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


  • BazQux Reader — your friend for reading feeds (ad)

    Try fine RSS feed reader written in Haskell and Ur/Web. Read blogs, Twitter, Facebook pages and Telegram channels in one place. Enjoy good typography. Search, filter, bookmark and share. Make your own algorithm free feed and support independent Haskell developer by purchasing a subscription.

In brief

Package of the week

This week’s package of the week is downloader, a small, low-dependency library that provides turn-key file download over HTTP and HTTPS.

Call for participation