The single most imporant convenience provided by the LFE rebar3 plugin is arguably the compiler. This allows any LFE project to be downloaded, compile, and used by any BEAM language that is also using rebar3 to manage its dependencies, etc.

To compile an LFE project:

rebar3 lfe compile

If you are publishing your LFE code, or using it in another project, you'll want to update your rebar.config file so that it is compile when a user (or script) executes the regular rebar3 compile command.

To ensure your LFE code will compile in other projects, add the following to your project's rebar.config:

{provider_hooks, [
  {pre, [{compile, {lfe, compile}}]}