WTH 0.0.3 formula

wth.rb

require "formula"

# https://github.com/Homebrew/homebrew/blob/master/Library/Formula/elixir.rb
class ErlangInstalled < Requirement
  fatal true
  default_formula 'erlang'
  env :userpaths

  satisfy {
    erl = which('erl') and begin
      `#{erl} -noshell -eval 'io:fwrite("~s~n", [erlang:system_info(otp_release)]).' -s erlang halt | grep -q '^R1[6789]'`
      $?.exitstatus == 0
    end
  }

  def message; <<-EOS.undent
    Erlang R16 is required to install.

    You can install this with:
      brew install erlang

    Or you can use an official installer from:
      http://www.erlang.org/
    EOS
  end
end
class Wth < Formula
  homepage "https//github.com/edgurgel/wth"
  url "https://github.com/edgurgel/wth/releases/download/0.0.3/wth.tar.gz"
  sha1 "64e837073b22258f0e7eb9dea994b483619d1dc1"

  depends_on ErlangInstalled

  def install
    bin.install "wth"
  end

  test do
    system "#{bin}/wth", "--help"
  end
end

brew install https://gist.githubusercontent.com/edgurgel/9823561/raw/be3f186d6fa04bf026dd6c54900faf223f00e439/wth.rb