{ lib, stdenv, fetchurl, ocaml, findlib, ocamlbuild
, version ? if lib.versionAtLeast (lib.getVersion ocaml) "4.02" then "20190626" else "20140422"
}@args:

let
  src = fetchurl (
  if version == "20140422" then { url = "http://cristal.inria.fr/~fpottier/menhir/menhir-20140422.tar.gz"; sha256 = "1ki1f2id6a14h9xpv2k8yb6px7dyw8cvwh39csyzj4qpzx7wia0d"; }
  else if version == "20170712" then { url = "http://gallium.inria.fr/~fpottier/menhir/menhir-20170712.tar.gz"; sha256 = "006hq3bwj81j67f2k9cgzj5wr4hai8j36925p5n3sd2j01ljsj6a"; }
  else if version == "20181113" then { url = "https://gitlab.inria.fr/fpottier/menhir/repository/20181113/archive.tar.gz"; sha256 = "0hl611l0gyl7b2bm7m0sk7vjz14m0i7znrnjq3gw58pylj934dx4"; }
  else if version == "20190626" then { url = "https://gitlab.inria.fr/fpottier/menhir/repository/20190626/archive.tar.gz"; sha256 = "0nigjnskg89knyi2zj1w211mb1pvkrwfqpz9a0qbw80k3hm8gg0h"; }
  else throw ("menhir: unknown version " ++ version)
  );
in

import ./generic.nix (args // { inherit version src; })