Elixir 0.5.0

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/elixir.rb

@@ -0,0 +1,42 @@
+require 'formula'
+
+class ErlangInstalled < Requirement
+  def message; <<-EOS.undent
+    Erlang 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
+
+  def satisfied?
+    which 'erl'
+  end
+
+  def fatal?
+    true
+  end
+end
+
+class Elixir < Formula
+  homepage 'http://elixir-lang.org/'
+  url 'https://github.com/elixir-lang/elixir/tarball/v0.5.0'
+  sha1 'a153ab42f06d7ba35e64e9dff9f60335e4678f7e'
+
+  head 'https://github.com/elixir-lang/elixir.git'
+
+  depends_on ErlangInstalled.new
+
+  def install
+    system "make"
+    bin.install Dir['bin/*'] - Dir['bin/*.bat']
+    prefix.install Dir['ebin/']
+  end
+
+  def test
+    system "#{bin}/elixir -v"
+  end
+end