nixpkgs/pkgs/development/compilers/llvm/default.nix

{stdenv, fetchurl, gcc, flex, perl, libtool, groff}:

stdenv.mkDerivation {
  name = "llvm-2.7";
  src = fetchurl {
    url    = http://llvm.org/releases/2.7/llvm-2.7.tgz;
    sha256 = "19dwvfyxr851fjfsaxbm56gdj9mlivr37bv6h41hd8q3hpf4nrlr";
  };

  buildInputs = [ gcc flex perl libtool groff ];

  meta = {
    homepage = http://llvm.org/;
    description = "Collection of modular and reusable compiler and toolchain technologies";
    maintainers = with stdenv.lib.maintainers; [viric];
    platforms = with stdenv.lib.platforms; all;
  };
}