Posts by Abhinav Sarkar

New post on abhinavsarkar.net: Reading Time Estimates for Pandoc Based Blog Generators

May 14, 2025

Reading Time Estimates for Pandoc Based Blog Generators If you, like me, are one of those who have written their own static-site generators based on Pandoc...

New post on abhinavsarkar.net: Running a Goaccess Server on NixOS

April 21, 2025

Running a Goaccess Server on NixOS Goaccess is an open source real-time web log analyzer. We can use it to parse a server access log file, such as of Nginx,...

New post on abhinavsarkar.net: Interpreting Brainfuck in Haskell

January 19, 2025

Interpreting Brainfuck in Haskell Writing an interpreter for Brainfuck is almost a rite of passage for any programming language implementer, and it’s my turn...

New post on abhinavsarkar.net: Solving Advent of Code “Seating System” with Comonads and Stencils

January 6, 2025

Solving Advent of Code “Seating System” with Comonads and Stencils In this post, we solve the Advent of Code 2020 “Seating System” challenge in Haskell using...

New Post on abhinavsarkar.net: Interesting Links for December 2024

January 1, 2025

Interesting Links for December 2024 A special Haskell edition of some interesting articles I recently read on the internet, starting with some Haskell-in-...

New post on abhinavsarkar.net: Interesting Links for November 2024

November 20, 2024

Interesting Links for November 2024 A special Programming Languages: Theory, Design and Implementation edition of some interesting articles I recently read...

New post on abhinavsarkar.net: Going REPLing with Haskeline

October 31, 2024

Going REPLing with Haskeline So you went ahead and created a new programming language, with an AST, a parser, and an interpreter. And now you hate how you...

New post on abhinavsarkar.net: Getting Started with Nix for Haskell

August 29, 2024

Getting Started with Nix for Haskell So, you’ve heard of the new hotness that is Nix, for creating reproducible and isolated development environments, and...

New post on abhinavsarkar.net: Interesting Links for July 2024

August 1, 2024

Interesting Links for July 2024 Here are some interesting things I recently read on the internet: The Unexpected Poetry of PhD Acknowledgements I love it...

New post on abhinavsarkar.net: Interesting Links for June 2024

June 14, 2024

Interesting Links for June 2024 Here are some interesting things I recently read on the internet: “As I walk around Philadelphia I often converse with...

New post on abhinavsarkar.net: Interesting Links for May 2024

May 22, 2024

Interesting Links for May 2024 Here are some interesting things I recently read on the internet: An Object-Oriented Language for the ’20s Adam Nelson remixes...

New post on abhinavsarkar.net: Interesting Links for April 2024

April 16, 2024

Interesting Links for April 2024 Here are some interesting things I recently read on the internet: A lazy and flippant classification of programming...

New post on abhinavsarkar.net: Solving Advent of Code ’23 “Aplenty” by Compiling

April 7, 2024

Solving Advent of Code ’23 “Aplenty” by Compiling Every year I try to solve some problems from the Advent of Code (AoC) competition in a not straightforward...

New post on abhinavsarkar.net: Generating Standalone Haddock Docs for a Multi-package Haskell Project

December 31, 2023

Generating Standalone Haddock Docs for a Multi-package Haskell Project So here’s a thing I recently wanted to do. I am working on a personal Haskell project,...

New post on abhinavsarkar.net: Implementing Co, a Small Language With Coroutines #4: Adding Channels

June 3, 2023

Implementing Co, a Small Language With Coroutines #4: Adding Channels In the previous post, we added coroutines to Co, the small language we are implementing...

New post on abhinavsarkar.net: Adding Mastodon Comments to a Website

May 19, 2023

Adding Mastodon Comments to a Website Two of the core ideas of IndieWeb are POSSE and Backfeed. The idea behind POSSE is that you publish your content on...

New post on abhinavsarkar.net: Automating Mastodon Backups with NixOS and Syncthing

May 13, 2023

Automating Mastodon Backups with NixOS and Syncthing Six months ago, a bunch of my friends and I started the Mastodon instance fantastic.earth. Till now, we...

New post on abhinavsarkar.net: Interesting Links for April 2023

May 2, 2023

Interesting Links for April 2023 Here are some interesting things I read on the internet in April 2023: Haskell Pedagogical Downsides of Haskell Why teaching...

New post on abhinavsarkar.net: Interesting Links for March 2023

April 1, 2023

Interesting Links for March 2023 Here are some interesting things I read on the internet in March 2023: Haskell Evolving isDigit memfd: An example of Haskell...

New post on abhinavsarkar.net: Interesting Links for February 2023

March 29, 2023

Interesting Links for February 2023 Here are some interesting things I read on the internet in February 2023: Haskell 6 ways to manage allocated memory in...

New post on abhinavsarkar.net: Pulling missing context of replied toots in Mastodon

March 5, 2023

Pulling missing context of replied toots in Mastodon Mastodon is a decentralized social media platform that’s become increasingly popular in recent years....

New post on abhinavsarkar.net: Implementing Co, a Small Language With Coroutines #3: Adding Coroutines

March 2, 2023

Implementing Co, a Small Language With Coroutines #3: Adding Coroutines In the previous post, we wrote the interpreter for basic features of Co, the small...

New post on abhinavsarkar.net: Implementing Co, a Small Language With Coroutines #3: Adding Coroutines

February 11, 2023

Implementing Co, a Small Language With Coroutines #3: Adding Coroutines In the previous post, we wrote the interpreter for basic features of Co, the small...

Writing a Static Site Generator Using Shake

December 17, 2022

Static site generators (SSGs) are all rage these days as people realize that plain HTML websites are good enough for most cases. SSGs take raw data in...

Solving Advent of Code “No Space Left On Device” with Parsers, Zippers and Interpreters

December 9, 2022

In this post, we solve the Advent of Code 2022, “No Space Left On Device” challenge in Haskell using parsers, zippers and interpreters. This post was...

Solving Rock-Paper-Scissors in Type-level Haskell

December 2, 2022

Let’s solve part 1 of today’s Advent of Code challenge “Rock Paper Scissors” in type-level Haskell. Instead of using term-level programming as we usually do,...

A* Algorithm in Haskell

December 1, 2022

The start of the Advent of code today reminded me of the A* algorithm, which I often find myself using for graph pathfinding related problems. If there is a...

Monitoring VPS Network Usage with vnStat and NixOS

November 16, 2022

I self-host a bunch of services on a VPS. To monitor the network usage of the VPS, I use vnstat, a simple network monitoring tool. After enabling the vnstat...

Just, Nix Shell and Podman are a Killer Combo

October 5, 2022

Let’s say, for some unclear reasons, you need to compile the “Hello World” C program using a variety of C compilers. #include int main() { printf("Hello...

Setting up Fail2Ban with Nginx and Cloudflare on NixOS

August 31, 2022

Fail2Ban is a service to scan the log files of various services on servers to find malicious IPs (by matching log lines to predefined regular expressions),...

Creating NixOS custom image for Digital Ocean VPS

August 27, 2022

Recently, I decided to move my Digital Ocean (DO) VPS to NixOS. The first step to do so is to create a custom NixOS image because NixOS is not an OS option...

Solving Advent of Code “Handy Haversacks” in Type-level Haskell

January 4, 2021

I have been trying to use type-level programming in Haskell to solve interesting problems since I read Thinking with Types by Sandy Maguire. Then I found...