Set namespace on repl start up

[practicalli-johnny]

that can be bundled into an alias in deps.edn as well (requires a , instead of spaces to avoid some word splitting through the shell):
{:aliases
{:repl {:main-opts ["-e" "(require,'clojure.set)(in-ns,'clojure.set)" "-r"]}}}
and then clj -M:repl

To test:
Can this be used with all aliases that start a REPL, like rebel and reveal