How to use this in Elixir?

[edescourtis]

Hi, I would like to use Elixir with mix to use riak_core? How can I get riak_core_ng to compile with mix?

[Licenser]

I don't think you need this with elixis, mix should hopefully let rebar do the compilation of the riak_core_ng package otherwise mix would need to implement a hell lot of things to remain compatible.

[edescourtis]

eric@eric-desktop:~/dev/no_slides$ mix deps.compile gen_fsm_compat
===> Compiling gen_fsm_compat
===> Unable to run pre hooks for 'compile', command 'erl_vsn' not found.
** (Mix) Could not compile dependency :gen_fsm_compat, "/home/eric/.asdf/installs/elixir/1.5.2/.mix/rebar3 bare compile --paths "/home/eric/dev/no_slides/_build/dev/lib/*/ebin"" command failed. You can recompile this dependency with "mix deps.compile gen_fsm_compat", update it with "mix deps.update gen_fsm_compat" or clean it with "mix deps.clean gen_fsm_compat"
eric@eric-desktop:~/dev/no_slides$ 

This is what I am getting when trying to compile https://github.com/gpad/no_slides.git branch riak_core_3 with mix. It's using riak_core_ng.

I tried to change mix.exs to this:

defmodule NoSlides.Mixfile do
  use Mix.Project

  def project do
    [app: :no_slides,
     version: "0.1.0",
     elixir: "~> 1.3",
     build_embedded: Mix.env == :prod,
     start_permanent: Mix.env == :prod,
     deps: deps()]
  end

  # Configuration for the OTP application
  #
  # Type "mix help compile.app" for more information
  def application do
    [applications: [:riak_core, :logger ],
     mod: {NoSlides, []}]
  end

  # Dependencies can be Hex packages:
  #
  #   {:mydep, "~> 0.3.0"}
  #
  # Or git/path repositories:
  #
  #   {:mydep, git: "https://github.com/elixir-lang/mydep.git", tag: "0.1.0"}
  #
  # Type "mix help deps" for more examples and options
  defp deps do
    [
      {:riak_core, "~> 3.0.9", git: "https://github.com/Kyorai/riak_core.git", branch: "r20"},

      #{:riak_core, "~> 3.0.9", hex: :riak_core_ng, },
      {:cuttlefish, git: "https://github.com/gpad/cuttlefish", branch: "develop", override: true},
      {:poolboy, "~> 1.5.1", override: true},
    ]
  end
end

with no luck.

[edescourtis]

I made a minimal elixir project that includes a minimal erlang dependency with rebar_erl_vsn as a provider_hook and I get the same result. Must be an issue between rebar3 and mix however I don't see why that is since other things like pc(port compiler) work just fine.

[Licenser]

Hi,
I did try this yesterday and couldn't even get anything to compile form that repo. But it looks like a bug in mix: https://gitlab.com/Project-FiFo/gen_fsm_compat/issues/1

[edescourtis]

I added a hacky workaround to that issue on gitlab. Also started issue on the Elixir repo for mix here.