Advent of Code
The famous programming competition: adventofcode.com. Below are instructions on how to run the solutions.
2023 (and somewhat 2019)
Make sure to clone --recursively because we now depend on a library
(aoc-lib) that lives here as a submodule.
cat Y2023/input/day-1.txt | cabal run y2023:day-12022
cd Y2022
cat input/day-1.txt | cabal run day-1.hs2021
ghc Main.hs
Main DAY2020
Most solutions are single-file and runnable with cabal run <filename.hs>
(or cabal new-run ... if you haven't upgraded to Cabal 3 yet).