depot/third_party/nixpkgs/pkgs/development/ocaml-modules/ppx_tools/default.nix

{
  lib,
  stdenv,
  fetchFromGitHub,
  buildDunePackage,
  ocaml,
  findlib,
  cppo,
}:

if lib.versionAtLeast ocaml.version "5.2" then
  throw "ppx_tools is not available for OCaml ${ocaml.version}"
else

  let
    param =
      let
        v6_6 = {
          version = "6.6";
          sha256 = "sha256-QhuaQ9346a3neoRM4GrOVzjR8fg9ysMZR1VzNgyIQtc=";
          nativeBuildInputs = [ cppo ];
          buildInputs = [ cppo ];
        };
      in
      {
        "4.02" = {
          version = "5.0+4.02.0";
          sha256 = "16drjk0qafjls8blng69qiv35a84wlafpk16grrg2i3x19p8dlj8";
        };
        "4.03" = {
          version = "5.0+4.03.0";
          sha256 = "061v1fl5z7z3ywi4ppryrlcywnvnqbsw83ppq72qmkc7ma4603jg";
        };
        "4.04" = {
          version = "unstable-20161114";
          rev = "49c08e2e4ea8fef88692cd1dcc1b38a9133f17ac";
          sha256 = "0ywzfkf5brj33nwh49k9if8x8v433ral25f3nbklfc9vqr06zrfl";
        };
        "4.05" = {
          version = "5.0+4.05.0";
          sha256 = "1jvvhk6wnkvm7b9zph309ihsc0hyxfpahmxxrq19vx8c674jsdm4";
        };
        "4.06" = {
          version = "5.1+4.06.0";
          sha256 = "1ww4cspdpgjjsgiv71s0im5yjkr3544x96wsq1vpdacq7dr7zwiw";
        };
        "4.07" = {
          version = "5.1+4.06.0";
          sha256 = "1ww4cspdpgjjsgiv71s0im5yjkr3544x96wsq1vpdacq7dr7zwiw";
        };
        "4.08" = v6_6;
        "4.09" = v6_6;
        "4.10" = v6_6;
        "4.11" = v6_6;
        "4.12" = v6_6;
        "4.13" = v6_6;
        "4.14" = v6_6;
        "5.0" = v6_6;
        "5.1" = v6_6;
      }
      .${ocaml.meta.branch};
  in

  let
    src = fetchFromGitHub {
      owner = "alainfrisch";
      repo = pname;
      rev = param.rev or param.version;
      inherit (param) sha256;
    };
    pname = "ppx_tools";
    meta = with lib; {
      description = "Tools for authors of ppx rewriters";
      homepage = "https://www.lexifi.com/ppx_tools";
      license = licenses.mit;
      maintainers = with maintainers; [ vbgl ];
    };
  in
  if lib.versionAtLeast param.version "6.0" then
    buildDunePackage {
      inherit pname src meta;
      inherit (param) version buildInputs nativeBuildInputs;
    }
  else
    stdenv.mkDerivation {
      name = "ocaml${ocaml.version}-${pname}-${param.version}";

      inherit src;

      nativeBuildInputs = [
        ocaml
        findlib
      ];

      strictDeps = true;

      createFindlibDestdir = true;

      dontStrip = true;

      meta = meta // {
        inherit (ocaml.meta) platforms;
      };
    }