{ lib, fetchFromGitHub, buildDunePackage, ocaml , version ? if lib.versionAtLeast ocaml.version "4.07" then "0.15.0" else "0.13.0" , ocaml-compiler-libs, ocaml-migrate-parsetree, ppx_derivers, stdio , stdlib-shims, ocaml-migrate-parsetree-2-1 }: let param = { "0.8.1" = { sha256 = "0vm0jajmg8135scbg0x60ivyy5gzv4abwnl7zls2mrw23ac6kml6"; max_version = "4.10"; useDune2 = false; useOMP2 = false; }; "0.13.0" = { sha256 = "0c54g22pm6lhfh3f7s5wbah8y48lr5lj3cqsbvgi99bly1b5vqvl"; useDune2 = false; useOMP2 = false; }; "0.15.0" = { sha256 = "1p037kqj5858xrhh0dps6vbf4fnijla6z9fjz5zigvnqp4i2xkrn"; min_version = "4.07"; useOMP2 = false; }; "0.18.0" = { sha256 = "1ciy6va2gjrpjs02kha83pzh0x1gkmfsfsdgabbs1v14a8qgfibm"; min_version = "4.07"; }; }."${version}"; in if param ? max_version && lib.versionAtLeast ocaml.version param.max_version || param ? min_version && !lib.versionAtLeast ocaml.version param.min_version then throw "ppxlib-${version} is not available for OCaml ${ocaml.version}" else buildDunePackage rec { pname = "ppxlib"; inherit version; useDune2 = param.useDune2 or true; src = fetchFromGitHub { owner = "ocaml-ppx"; repo = pname; rev = version; inherit (param) sha256; }; propagatedBuildInputs = [ ocaml-compiler-libs (if param.useOMP2 or true then ocaml-migrate-parsetree-2-1 else ocaml-migrate-parsetree) ppx_derivers stdio stdlib-shims ]; meta = { description = "Comprehensive ppx tool set"; license = lib.licenses.mit; maintainers = [ lib.maintainers.vbgl ]; inherit (src.meta) homepage; }; }