I’ve never looked for this package, but you may have to add it manually. Nerves supports this and there is a great talk from last year’s ElixirConf about it. I’ll try to find it if you would like.
We had a sort of shell a while back. You can add the dep from here but it isn’t your normal shell. It is usually easier to do cmd("echo hello world") but sometimes you need a bit more control in which case i do usually: _ = Nerves.Runtime.cmd("echo", ["hello", "world"], :return). The only issue with those two approaches is when you need something that does fancy stuff to the terminal such as top. (which is disabled in the default systems iirc). What are you trying to do in a regular shell? maybe i can recommend an approach.
