My attempt at 2021's Advent of Code.

Puzzle inputs differ by user. For this reason, you can't get your data with an unauthenticated request. To authenicate your requests, you must export your session token as an environment variable, or add it to ~/.config/aocd/token.

// EITHER
export AOC_SESSION=<AOC_SESSION_TOKEN>
// OR
echo <AOC_SESSION_TOKEN> > ~/.config/aocd/token

Setup your environment and dependencies with pipenv.

make install
make test