A rebar plugin to specify path dependencies.
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A rebar plugin to specify path dependencies.

Over time, your project is growing significantly in size! It’s gotten to the point that you probably want to split out a separate OTP applications for others to use.

This plugin add to rebar the supports of path dependencies which are typically sub-applications that live within one repository.


$ rebar3 compile


Let’s start off by making a new OTP application hello_utils inside of your project hello_world:

# inside of hello-world/
$ rebar3 new app hello_utils

This will create a new folder hello_utils inside of which a rebar.config and src folder are ready to be useed. In order to tell Rebar about this, open up hello_world/rebar.config and add hello_utils to your dependencies:

{deps, [
  {hello_utils, {path, "hello_utils"}},

This tells Rebar that we depend on an application called hello_utils which is found in the hello_utils folder (relative to the rebar.config file it’s written in).

and then add the plugin to your rebar.config:

{plugins, [

Then just compile your application

$ rebar3 compile
===> Compiling rebar3_path_deps
===> Verifying dependencies...
===> Fetching hello_utils ({path,"hello_utils",
===> Compiling hello_utils
===> Compiling hello_world