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nerves_bootstrap

1.0.0-rc.1
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Nerves mix integration bootstrap and new project generator

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nerves_bootstrap templates new mix.exs
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templates/new/mix.exs 

defmodule <%= app_module %>.MixProject do

  use Mix.Project



  @target System.get_env("MIX_TARGET") || "host"



  def project do

    [

      app: :<%= app_name %>,

      version: "0.1.0",

      elixir: "<%= elixir_req %>",

      target: @target,

      archives: [nerves_bootstrap: "~> <%= bootstrap_vsn %>"],<%= if in_umbrella do %>

      deps_path: "../../deps/#{@target}",

      build_path: "../../_build/#{@target}",

      config_path: "../../config/config.exs",

      lockfile: "../../mix.lock.#{@target}",<% else %>

      deps_path: "deps/#{@target}",

      build_path: "_build/#{@target}",

      lockfile: "mix.lock.#{@target}",<% end %>

      build_embedded: Mix.env() == :prod,

      start_permanent: Mix.env() == :prod,

      aliases: [loadconfig: [&bootstrap/1]],

      deps: deps()

    ]

  end



  # Starting nerves_bootstrap adds the required aliases to Mix.Project.config()

  # Aliases are only added if MIX_TARGET is set.

  def bootstrap(args) do

    Application.start(:nerves_bootstrap)

    Mix.Task.run("loadconfig", args)

  end



  # Run "mix help compile.app" to learn about applications.

  def application, do: application(@target)



  # Specify target specific application configurations

  # It is common that the application start function will start and supervise

  # applications which could cause the host to fail. Because of this, we only

  # invoke <%= app_module %>.start/2 when running on a target.

  def application("host") do

    [extra_applications: [:logger]]

  end



  def application(_target) do

    [mod: {<%= app_module %>.Application, []}, extra_applications: [:logger]]

  end



  # Run "mix help deps" to learn about dependencies.

  defp deps do

    [<%= nerves_dep %>] ++ deps(@target)

  end



  # Specify target specific dependencies

  defp deps("host"), do: []



  defp deps(target) do

    [

      {:shoehorn, "~> <%= shoehorn_vsn %>"},

      {:nerves_runtime, "~> <%= runtime_vsn %>"}

    ] ++ system(target)

  end



<%= for target <- targets do %>

  defp system("<%= target %>"), do: [{:<%= "nerves_system_#{target}" %>, "~> 1.0-rc", runtime: false}]

<% end %>

  defp system(target), do: Mix.raise("Unknown MIX_TARGET: #{target}")

end