{ lib, callPackage, buildDunePackage, fetchurl
, fix, menhir, menhirLib, menhirSdk, merlin-extend, ppxlib, cppo, ppx_derivers
, dune-build-info
}:

buildDunePackage rec {
  pname = "reason";
  version = "3.13.0";

  minimalOCamlVersion = "4.11";

  src = fetchurl {
    url = "https://github.com/reasonml/reason/releases/download/${version}/reason-${version}.tbz";
    hash = "sha256-3yVEYGvIJKZwguIBGCbnoc3nrwzLW6RX6Tf+AYw85+Q=";
  };

  nativeBuildInputs = [
    menhir
    cppo
  ];

  buildInputs = [
    dune-build-info
    fix
    menhirSdk
    merlin-extend
  ];

  propagatedBuildInputs = [
    ppxlib
    menhirLib
  ];

  passthru.tests = {
    hello = callPackage ./tests/hello { };
  };

  meta = with lib; {
    homepage = "https://reasonml.github.io/";
    downloadPage = "https://github.com/reasonml/reason";
    description = "User-friendly programming language built on OCaml";
    license = licenses.mit;
    maintainers = [ ];
  };
}