Haskell on The Negation

Cross-Compiling Haskell under NixOS with Docker

Thu, 29 May 2025 23:55:54 +0000

I learned how to cross-compile Haskell projects under NixOS using Docker images for ARM architectures, and how to run them under emulation on x86_64 hosts.

Magic JSON in Haskell

Fri, 23 May 2025 21:19:46 +0000

Among all Haskell libraries I have used, the one I reach for the most is autodocodec. I will explain what it is and what freebies it gives you.

Hacking Haskell with Nix: Two Tricks

Thu, 22 May 2025 22:10:37 +0000

I have mentioned a few times in my posts that Haskell is my go-to language. This is true even for small applications which go beyond a simple shell script.

Hacking Haskell with Nix is an easy and fun way to quickly prototype. I want to share two tricks that I use.

Haskell Project Template with Nix Flakes

Tue, 20 May 2025 21:43:46 +0000

This post introduces my Haskell project template powered by Nix Flakes – a simple setup I use to quickly spin up new Haskell applications.

More Haskell Diagrams: Contribution Graph

Fri, 30 Aug 2024 22:39:46 +0000

Hacking Watson with Haskell - Part 3

Sat, 17 Aug 2024 21:02:23 +0000

In the previous blog posts (part 1, part 2), we managed to read Watson frames and state from its JSON files. In this blog post, we will do something more useful: start and stop timer.

Hacking Watson with Haskell - Part 2

Fri, 16 Aug 2024 22:50:46 +0000

In the previous blog post, we read the Watson frames from a JSON file. In this blog post, we will read the Watson state file and print it to the standard output.

Hacking Watson with Haskell - Part 1

Thu, 15 Aug 2024 21:33:55 +0000

Watson is a command-line tool that helps you to track your time. It is simple and powerful, yet it lacks some features that I would like to have. In this blog post, I will start hacking Watson with Haskell.

More Haskell Diagrams: Dynamic OpenGraph Images

Wed, 14 Aug 2024 20:29:55 +0000

This blog post is a Literate Haskell program that produces its own OpenGraph image using the infamous Haskell diagrams library.

More Haskell Diagrams: Wrapping Text

Tue, 13 Aug 2024 19:14:35 +0000

Working with text, especially wrapping it, can be tricky when generating images with Haskell’s diagrams library. In this blog post, we will write a literate Haskell program to generate an image with text that fits in a box and wraps if we want so.

More Haskell Diagrams: OpenGraph Images

Mon, 12 Aug 2024 21:15:53 +0000

In this blog post, we are continuing to play with Haskell’s diagrams library. We will write a literate Haskell program to generate an OpenGraph image.

Executable Blog Posts: Second Take

Sun, 11 Aug 2024 22:35:12 +0000

This is a second take for my previous blog post Abusing Haskell: Executable Blog Posts. This time, I am going to improve the solution with a Lua filter for pandoc.

More Haskell Diagrams: Images

Sat, 10 Aug 2024 11:03:50 +0000

Let’s continue exploring the Haskell diagrams library. In this post, we will embed external images in our diagrams.

Introduction to Haskell Diagrams

Fri, 09 Aug 2024 23:20:10 +0000

I need a solid declarative diagramming library or tool that I can invest time in. I always wanted to learn Haskell’s diagrams library. In this post, I will give it a try.

Using niv to Manage Haskell Dependencies

Tue, 06 Aug 2024 20:31:10 +0000

Using Nix to manage project dependencies and development environments is a great way to keep your projects reproducible and isolated. niv can help you further in this by pinning the versions of your dependencies outside of your Nix code as JSON data.

In this post, I will show you what using niv looks like and how to override Haskell dependencies. I will also demo a small script I wrote to add Hackage packages to the sources.json file.

Backup GitHub Repositories with gidek

Mon, 05 Aug 2024 21:24:10 +0000

Do you backup your Git repositories? If not, you should consider doing so. I might even have a solution for you if you are using GitHub: gidek. It even has some NixOS goodies packed with it.

Abusing Haskell: Executable Blog Posts

Sun, 04 Aug 2024 12:21:10 +0000

Why? Because I can, and it is a rainy Sunday.

I post my notes on my blog, Hashnode and dev.to, which require slightly different markdown formats. I have been doing the sane thing to fix formats so far. But it is a rainy Sunday and I am bored, so I decided to make this blog post an executable Haskell program to do the same.