Publishing a package Erlang packages can be published through the rebar3 Hex plugin. It is suggested to place the entry in the global rebar3 config which should be made as ~/.config/rebar3/rebar.config. Example rebar.config file {plugins, [rebar3_hex]}. Publishing a package to Hex consists of registering a Hex user, adding metadata to the project’s .app.src file, and finally submitting the package