They're kind of lying. You only need pip or any package install if your testing image doesn't pre-install the required packages before running the tests. Which

They're kind of lying. You only need pip or any package install if your testing image doesn't pre-install the required packages before running the tests. Which I don't myself since I always want to see if my packages work with the latest versions of other packages - and Dark wouldn't be able to handle that anyway. So my test runs actually complete in about 50 ms if I'm not testing any external API functionality. They will also never finish earlier than 5 minutes if I am, even on Dark - since they're based on external services.