Advent of Code in Haskell in silly ways

Using stack:

git clone https://github.com/Intrets/AdventOfCode/
cd adventofcode/
stack init
stack run

To run every day of every year:

stack run

To run all of a specific year:

stack run 2020

To run a specific year and specific days:

stack run 2021 1 2 3 12 20