pkg:setup
opamroot = buildpath/"opamroot"
opamroot.mkpath
ENV["OPAMROOT"] = opamroot
ENV["OPAMYES"] = "1"
ENV["NATIVE"] = "1"
ENV["LIB_PATH"] = lib
ENV["BIN_PATH"] = bin
opam init --no-setup
opam install ocamlfind
opam install --fake num
opam config exec -- make brew