deps.edn is a building block not a finished build tool. You need to import libraries for common tasks like building an uberjar. There are plenty of reasons to

deps.edn is a building block not a finished build tool. You need to import libraries for common tasks like building an uberjar. There are plenty of reasons to start a new REPL: - adding a library - changing the project config - messing up the repl state - starting with a clean slate - switching branches