Handy alias to run an Elixir escript without building it. Quite useful for development.

mix.exs

defmodule MyAwesomeProject.Mixfile do
  use Mix.Project

  def project do
    [app: :my_awesome_project,
     version: "0.1.0",
     elixir: "~> 1.3",
     escript: escript(),
     deps: deps(),
     aliases: aliases()]
  end

  # Configuration for the escript
  #
  # Type "mix help escript.build" for more information
  def escript do
    [main_module: MyAwesomeProject.CLI]
  end

  # Configuration for the OTP application
  #
  # Type "mix help compile.app" for more information
  def application do
    # Specify extra applications you'll use from Erlang/Elixir
    [extra_applications: [:logger]]
  end

  # Dependencies can be Hex packages:
  #
  #   {:my_dep, "~> 0.3.0"}
  #
  # Or git/path repositories:
  #
  #   {:my_dep, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
  #
  # Type "mix help deps" for more examples and options
  defp deps do
    [{:my_dep, "~> 0.3.0"}]
  end

  # Aliases are shortcuts or tasks specific to the current project.
  # For example, to run the escript module:
  #
  #     $ mix escript.run <args>
  #
  # See the documentation for `Mix` for more info on aliases.
  defp aliases do
    ["escript.run": [&escript_run/1]]
  end

  defp escript_run(args) do
    Mix.shell.cmd("mix run -e '#{escript()[:main_module]}.main(#{inspect(args)})'")
  end
end