One problem I run into when learning Common Lisp is ASDF. For some reason I can't figure out how to use it properly. For example, when I open a system definition in a new REPL, what's the expected workflow? I'm using emacs and slime by the way. Maybe my environment is set up wrong. I also have to prefix the `defsystem`s with `asdf:`. When I look at examples in open source projects they just straight up use `uiop` functions and `defsystem` in their `.asd` files without the package.