require 'formula' # Installs the binary build of MLton. # Since MLton is written in ML, building from source # would require an existing ML compiler/interpreter for bootstrapping. class StandardHomebrewLocation < Requirement def message; <<-EOS.undent mlton won't work outside of /usr/local Because this uses pre-compiled binaries, it will not work if Homebrew is installed somewhere other than /usr/local; mlton will be unable to find GMP. EOS end def satisfied? HOMEBREW_PREFIX.to_s == "/usr/local" end end class Mlton < Formula homepage 'http://mlton.org' url 'http://downloads.sourceforge.net/project/mlton/mlton/20100608/mlton-20100608-1.amd64-darwin.gmp-static.tgz' md5 'd32430f2b66f05ac0ef6ff087ea109ca' # We download and install the version of MLton which is statically linked to libgmp, but all # generated executables will require gmp anyway, hence the dependency depends_on StandardHomebrewLocation.new depends_on 'gmp' skip_clean :all def install cd "local" do # Remove OS X droppings rm Dir["man/man1/._*"] mv "man", "share" prefix.install Dir['*'] end end end