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rebar3

ELP can auto-discover projects which contain a rebar.config or rebar.config.script. To do so, it requires an additional rebar3 plugin, named the build_info plugin.

info

We are in the process of upstreaming the plugin to rebar3, so this additional step will hopefully not be necessary with newer versions of rebar3.

Install the rebar3 build-info plugin​

To enable the plugin globally, add the following lines to your ~/.config/rebar3/rebar.config file:

{project_plugins, [
  {eqwalizer_rebar3,
    {git_subdir,
        "https://github.com/whatsapp/eqwalizer.git",
        {branch, "main"},
        "eqwalizer_rebar3"}}
]}.

Eqwalizer Support​

By default, ELP integrates with the eqWAlizer type checker. For this to work, you need to add the following to your project dependencies:

{deps, [
  {eqwalizer_support,
    {git_subdir,
        "https://github.com/whatsapp/eqwalizer.git",
        {branch, "main"},
        "eqwalizer_support"}}
]}.

If you, instead, prefer to disable eqWAlizer support altogether (you will lose features such as types on hover), you can do so via the .elp.toml config file.

Troubleshooting​

My rebar3 project is not found​

Run the following command in the project root:

$ rebar3 as test help build_info

build-info plugin was not installed​

You need the build-info plugin for rebar3 to be installed. Please refer to the installation instructions.