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nerves_bootstrap

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Nerves mix integration bootstrap and new project generator

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nerves_bootstrap lib attic loadpaths.ex
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lib/attic/loadpaths.ex 

defmodule Mix.Tasks.Nerves.Loadpaths do

  @moduledoc deprecated: "Tasks from :nerves should be used instead"

  use Mix.Task

  import Mix.Nerves.IO



  @impl Mix.Task

  def run(_args) do

    unless System.get_env("NERVES_PRECOMPILE") == "1" do

      debug_info("Loadpaths Start")



      Mix.Task.run("nerves.precompile", ["--no-loadpaths"])



      try do

        nerves_env_info()

        Mix.Task.run("nerves.env", [])

        Nerves.Env.bootstrap()

        clear_deps_cache()

        env_info()

      rescue

        e ->

          reraise e, __STACKTRACE__

      end



      debug_info("Loadpaths End")

    end

  end



  defp env(k) do

    case System.get_env(k) do

      unset when unset == nil or unset == "" -> "unset"

      set -> Path.relative_to_cwd(set)

    end

  end



  defp env_info() do

    debug_info("Environment Variable List", """

      target:     #{Nerves.Bootstrap.mix_target()}

      toolchain:  #{env("NERVES_TOOLCHAIN")}

      system:     #{env("NERVES_SYSTEM")}

      app:        #{env("NERVES_APP")}

    """)

  end



  defp clear_deps_cache() do

    if :erlang.function_exported(Mix.Project, :clear_deps_cache, 0) do

      apply(Mix.Project, :clear_deps_cache, [])

    else

      if project = Mix.Project.get() do

        key = {:cached_deps, Mix.env(), project}

        Agent.cast(Mix.ProjectStack, &%{&1 | cache: Map.delete(&1.cache, key)})

      end

    end

  end

end