gistfile1.txt

Unchecked dependencies for environment dev:
* postgrex (package)
  the dependency postgrex defined

  > In mix.exs:
    {:postgrex, nil, [hex_app: :postgrex, optional: true]}

  does not match the requirement specified

  > In deps/sugar/mix.exs:
    {:postgrex, "~> 0.5.5", [hex_app: :postgrex]}

  Ensure they match or specify one of the above in your YourProject.Mixfile deps and set `override: true`
** (Mix) Can't continue due to errors on dependencies

mix.exs

defmodule YourProject.Mixfile do
  use Mix.Project

  def project do
    [app: :your_project,
     version: "0.0.1",
     elixir: "~> 1.0.0",
     deps: deps,
     override: true]
  end

  def application do
    [applications: [:logger]]
  end

  defp deps do
    [{:sugar, github: "sugar-framework/sugar"},
  {:postgrex, nil, [hex_app: :postgrex, optional: true]}]
  end
end