I do similar things with Elixir scripts, though commonly I still turn to PHP because there is some single file library that does what I want with a lot less cer

I do similar things with Elixir scripts, though commonly I still turn to PHP because there is some single file library that does what I want with a lot less ceremony than the Java variety would require. There's also PsySH, https://psysh.org/ https://psysh.org/, for being something other than a Common Lisp or BEAM interface it's a very nice REPL. Besides Picolisp and iex it's the interactive programming environment I use the most.