So I was working thru this tutorial (another take on blog creation) and I started off by trying to switch my configuration from postgres to mysql.  I got this error:

(MatchError) no match of right hand side value: {:error, {:mariaex, {'no such file or directory', 'mariaex.app'}}}

 

 

I had automatically used this:

defp deps do
[{:mysql, "~> 0.1"},
{:ecto, "~> 1.0"}]
end

Where it was really supposed to be::

defp deps do
[{:mariaex, "~> 0.1"},
{:ecto, "~> 1.0"}]
end

I happily found the answer to the error here.  Thanks!