fixup wesnoth homebrew script

wesnoth.rb

require 'formula'

class Wesnoth < Formula
  homepage 'http://www.wesnoth.org/'
  url 'https://downloads.sourceforge.net/project/wesnoth/wesnoth-1.10/wesnoth-1.10.6/wesnoth-1.10.6.tar.bz2'
  sha1 'c812a55a4544b894691f37ab95cc849d015a3041'
  head 'https://github.com/cbeck88/wesnoth.git'

  devel do
    url 'https://downloads.sourceforge.net/project/wesnoth/wesnoth/wesnoth-1.11.7/wesnoth-1.11.7.tar.bz2'
    sha1 'cbbf5b073896429da754634ee2c1e4fc69159e9d'
  end

  depends_on 'scons' => :build
  depends_on 'gettext'
  depends_on 'pango'
  depends_on 'boost'
  depends_on 'fontconfig'
  # x11 driver is needed or the clipboard code doesn't work, images don't load
  depends_on 'sdl' => 'with-x11-driver'
  depends_on 'sdl_image' => 'with-x11-driver'
  # The music is in .ogg format
  depends_on 'sdl_mixer' => 'with-libvorbis'
  depends_on 'sdl_net'
  depends_on 'sdl_ttf'
  depends_on 'ccache'

  def install
    system "scons", "install", "wesnoth", '-j 3', 'ccache=true', "prefix=#{prefix}", 'boostlibdir=/home/chris/.linuxbrew/lib'
  end

end