Mix project with a flexible config for the Elixir artifacts

mix.exs

defmodule MyApp.MixProject do
  use Mix.Project

  def project do
    [
      app: :my_app,
      version: "0.1.0",
      elixir: "~> 1.5",
      elixirc_paths: elixirc_paths(Mix.env()),
      compilers: [:phoenix, :gettext] ++ Mix.compilers(),
      start_permanent: Mix.env() == :prod,
      aliases: aliases(),
      deps: deps(),
      deps_path: System.get_env("MIX_DEPS_PATH") || "./deps",
      releases: [
        broker: [
          include_executables_for: [:unix]
        ]
      ]
    ]
  end
  
  # ....
end