Mix compile warnings-as-errors

[Chris Jimison]

Hi all,

Kind of a dumb question but I hit a bit of road block on this one and any help would be greatly appreciated.  

I would like to set up mix so that warnings are treated as errors.  I saw in Mix.Tasks.Compile.Elixir there is a flag I can pass in --warnings-as-errors but I can' figure out how to make this work.  

I tried on the command line: mix compile --warnings-as-errors, but I am seeing the same warnings with no errors.

In my mix.exs file I also have the following defined:

  def project do

    [app: :sandbox,

     version: "0.0.1",

     deps_path: "../../deps",

     lockfile: "../../mix.lock",

     elixir: "~> 1.0",

     erlc_options: [{:parse_transform, :lager_transform}, :warn_missing_spec, :warnings_as_errors],

     deps: deps]

  end

which works exactly as expected for my erlang files.  So with all that stated here are my questions:

Is there something similar to erlc_options for the elixir files?

Is there a flag for warn on missing spec like in Erlang?

Thanks again for any help and/or insight!

-chris

[José Valim]

Which warnings are you seeing not as an error?

In any case, you can elixirc_options: [warnings_as_errors: true].

José Valim

www.plataformatec.com.br

Skype: jv.ptec

Founder and Lead Developer

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[Christopher Jimison]

The warnings I was not seeing as an error is “variable xyz is unused”. 

Also adding the below field into the mix.exs "def project" did not fix the issue and I am still seeing warnings with no errors generated.

I am on elixir 1.0.3 if that helps any.

Thanks!

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[José Valim]

Please report that as an issue then, it looks like a bug. :)

José Valim

www.plataformatec.com.br

Skype: jv.ptec

Founder and Lead Developer

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[Christopher Jimison]

Will do.

-Chris

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