{ lib, fetchzip, mkCoqDerivation, coq, version ? null }:

let
  ocamlPackages =
    coq.ocamlPackages.overrideScope'
      (self: super: {
        ppxlib = super.ppxlib.override { version = "0.15.0"; };
        # the following does not work
        ppx_sexp_conv = super.ppx_sexp_conv.overrideAttrs (_: {
          src = fetchzip {
            url = "https://github.com/janestreet/ppx_sexp_conv/archive/v0.14.1.tar.gz";
            sha256 = "04bx5id99clrgvkg122nx03zig1m7igg75piphhyx04w33shgkz2";
          };
        });
      });

  release = {
    "8.14+rc1+0.14.0".sha256 = "1w7d7anvcfx8vz51mnrf1jkw6rlpzjkjlr06avf58wlhymww7pja";
    "8.13.0+0.13.0".sha256 = "0k69907xn4k61w4mkhwf8kh8drw9pijk9ynijsppihw98j8w38fy";
    "8.12.0+0.12.1".sha256 = "048x3sgcq4h845hi6hm4j4dsfca8zfj70dm42w68n63qcm6xf9hn";
    "8.11.0+0.11.1".sha256 = "1phmh99yqv71vlwklqgfxiq2vj99zrzxmryj2j4qvg5vav3y3y6c";
    "8.10.0+0.7.2".sha256  = "1ljzm63hpd0ksvkyxcbh8rdf7p90vg91gb4h0zz0941v1zh40k8c";
  };
in

(with lib; mkCoqDerivation rec {
  pname = "serapi";
  inherit version release;

  defaultVersion =  with versions; switch coq.version [
      { case = isEq "8.14"; out = "8.14+rc1+0.14.0"; }
      { case = isEq "8.13"; out = "8.13.0+0.13.0"; }
      { case = isEq "8.12"; out = "8.12.0+0.12.1"; }
      { case = isEq "8.11"; out = "8.11.0+0.11.1"; }
      { case = isEq "8.10"; out = "8.10.0+0.7.2";  }
    ] null;

  useDune2 = true;

  propagatedBuildInputs =
    with ocamlPackages; [
      cmdliner
      findlib # run time dependency of SerAPI
      ppx_deriving
      ppx_deriving_yojson
      ppx_import
      ppx_sexp_conv
      sexplib
      yojson
      zarith # needed because of Coq
    ];

  installPhase = ''
    runHook preInstall
    dune install --prefix $out --libdir $OCAMLFIND_DESTDIR coq-serapi
    runHook postInstall
  '';

  meta = with lib; {
    homepage = https://github.com/ejgallego/coq-serapi;
    description = "SerAPI is a library for machine-to-machine interaction with the Coq proof assistant";
    license = licenses.lgpl21Plus;
    maintainers = [ maintainers.Zimmi48 ];
  };
}).overrideAttrs(o:
  let inherit (o) version; in {
  src = fetchzip {
    url =
      if version == "8.14+rc1+0.14.0"
      then "https://github.com/ejgallego/coq-serapi/archive/refs/tags/8.14+rc1+0.14.0.tar.gz"
      else
        "https://github.com/ejgallego/coq-serapi/releases/download/${version}/coq-serapi-${
          if version == "8.11.0+0.11.1" then version
          else builtins.replaceStrings [ "+" ] [ "." ] version
        }.tbz";
    sha256 = release."${version}".sha256;
  };

  patches =
    if version == "8.10.0+0.7.2"
    then [
      ./8.10.0+0.7.2.patch
    ]
    else if version == "8.11.0+0.11.1"
    then [
      ./8.11.0+0.11.1.patch
    ]
    else if version == "8.12.0+0.12.1" || version == "8.13.0+0.13.0"
    then [
      ./8.12.0+0.12.1.patch
    ]
    else [];
})