{ fetchPypi, unzip, stdenv, pname, version, jarHash, }: stdenv.mkDerivation rec { inherit pname version; src = fetchPypi { inherit pname version; format = "wheel"; python = "py3"; dist = "py3"; hash = jarHash; }; dontUnpack = true; nativeBuildInputs = [ unzip ]; installPhase = '' unzip ${src} install -D ./skein/java/skein.jar $out ''; }