Add :netrc library to your project's dependencies in mix.exs:

defp deps do
  [
    {:netrc, "~> 0.0.1"}
  ]
end

And fetch:

$ mix deps.get

Read the user's default netrc file:

iex> Netrc.read
%{"api.github.com" => %{"login" => "username", "password" => "pass"}}

Read the specific file path:

iex> Netrc.read("test/data/sample.netrc")
%{"m" => %{"login" => "l", "password" => "p"}}

Copyright © 2014-2015 Takayuki Matsubara, released under the MIT license.