I am still only lurking into Elixir. My friends love it. I want to evaluate the developer experience and compare it with Common Lisp.
Alchemist mode for Emacs doesn't seem to have much of the interactive capabilities of Slime (and that would be understandable, given it's the most one can do).
often alchemist has to boot an Erlang VM to evaluate a single expression. Running tests boots a VM, looking up a function’s source doc boots a VM, each prefix autocompletion boots a VM. This is slow, and if you want the VM to load the code you’re actively developing you better not have any compile-time errors.
http://jtmoulia.pocketknife.io/blog/2015/03/11/elixir-and-distel/
We will want to try Distel, even if it doesn't look much maintained (at all).