Elixir Streams to process large HTTP responses on the fly

Wouldn’t be great to process a large HTTP response, in chunks, with Elixir streams? Something like:

HTTPStream.get("https://.../large_image.tiff")
|> StreamGzip.gzip
|> Stream.into(File.stream!("image.tiff.gz"))
|> Stream.run

In this first of a two-parts article, we see how to transform an HTTPoison async response into an Elixir Stream, to easily process large remote files on the fly, gaining code clarity and reusability.