Setting up for Advent of Code 2025

[adamu]

@vkryukov

Frankly, with LLMs these days, you don’t necessarily need to rely on external packages for simple things - you can just ask the LLM of your choice to write your own little modules (or even write them yourself!).

Note that AoC recommends that you don’t use LLMs. Here’s mine:

1. copy dayN.exs to relevant date
2. replace REPLACE_ME with relevant date
3. right click and save input file from website you’re reading already
4. run with elixir script.exs input

That’s it. That’s the whole setup.