{ lib, stdenv, fetchzip, ocaml, findlib, dune, cppo, easy-format, biniou }: let pname = "yojson"; param = if lib.versionAtLeast ocaml.version "4.02" then rec { version = "1.7.0"; url = "https://github.com/ocaml-community/yojson/releases/download/${version}/yojson-${version}.tbz"; sha256 = "08llz96if8bcgnaishf18si76cv11zbkni0aldb54k3cn7ipiqvd"; nativeBuildInputs = [ dune ]; extra = { installPhase = '' dune install --prefix $out --libdir $OCAMLFIND_DESTDIR ${pname} ''; }; } else rec { version = "1.2.3"; url = "https://github.com/ocaml-community/yojson/archive/v${version}.tar.gz"; sha256 = "10dvkndgwanvw4agbjln7kgb1n9s6lii7jw82kwxczl5rd1sgmvl"; extra = { createFindlibDestdir = true; makeFlags = [ "PREFIX=$(out)" ]; preBuild = "mkdir $out/bin"; }; }; in stdenv.mkDerivation ({ name = "ocaml${ocaml.version}-${pname}-${param.version}"; src = fetchzip { inherit (param) url sha256; }; nativeBuildInputs = [ ocaml findlib ] ++ (param.nativeBuildInputs or []); propagatedNativeBuildInputs = [ cppo ]; propagatedBuildInputs = [ easy-format biniou ]; configurePlatforms = []; meta = with lib; { description = "An optimized parsing and printing library for the JSON format"; homepage = "https://github.com/ocaml-community/${pname}"; license = licenses.bsd3; maintainers = [ maintainers.vbgl ]; platforms = ocaml.meta.platforms or []; }; } // param.extra)