A rebar plugin for defining aliases
$ rebar3 compile
Add the plugin to your rebar config:
{plugins, [rebar_alias]}.
Then just call your plugin directly in an existing application:
{alias, [{check, [eunit, {ct, "--sys_config=config/app.config"}]}]}.
$ rebar3 check
===> Fetching rebar_alias
===> Compiling rebar_alias
<Plugin Output>