Step 1: Make .env file

make a .env file with the following contents:

LICHESS_CLIENT_ID="lichess-oauth-flask"
SECRET_KEY="{ secure random key for flask sessions }"

Step 2: Run the App

run the app:

python app.py

Step 3: Load the URL

load this url in your browser: http://127.0.0.1:5000/

Step 4: ???

???

Step 5: Profit

profit