tiny elixir HTTP GET client w/ ssl verification using python3-certifi's certificate bundle

get.exs

#!/usr/bin/elixir
defmodule HTTPGetter do
  @cert '/usr/lib/python3/dist-packages/certifi/cacert.pem'
  @opts [ ssl: [ verify: :verify_peer, cacertfile: @cert ] ]
  def die msg do
    IO.puts :stderr, msg; exit { :shutdown, 1 }
  end
  def get url do
    case :httpc.request :get, { String.to_charlist(url), [] }, @opts, [] do
      { :ok, { { _v, 200, _m }, _h, body } } -> :erlang.list_to_binary body
      { :error, e }                          -> die "Error: #{inspect e}"
    end
  end
  def main [url] do
    :ssl.start; :inets.start; get(url) |> IO.write
  end
  def main(_), do: die "Usage: get.exs <url>"
end
HTTPGetter.main System.argv