I have recently found how powerful the h command in iex is. It is however limited to packages with documentation, in particular it excludes the Erlang core libraries. This got me thinking, could we use an extension method where an Elixir package could have something like a Protocol that could be used to provide documentation on an external module? This would provide a great tool to prevent the reinvention of the wheel.

Has this been considered before?

On a related note we could use this as an Extension to Rebar to provide Erlang documentation for Elixir packages which may help bridge the Erlang and Elixir communities.