readme-heroku.md

Our production Heroku deployment is controlled by the following files:

• Procfile: tells Heroku what command to launch in each Dyno;

• runtime.txt: tells Heroku which run-time engine to use (i.e., which version of Python);

  Heroku detects Python by default, but runtime.txt lets us specify/bump the version as needed;

• requirements.txt: tells Heroku what our production dependencies are. This is managed by hatch now. You will need to make sure the Python version in the [tool.hatch.envs.prod] section matches the one in runtime.txt. Now you can update the requirements with:

   hatch env remove prod
   rm -f requirements.txt
   hatch env create prod