{ lib, stdenv, fetchFromGitHub, cmake, openssl }: stdenv.mkDerivation rec { pname = "paho.mqtt.c"; version = "1.3.12"; src = fetchFromGitHub { owner = "eclipse"; repo = "paho.mqtt.c"; rev = "v${version}"; hash = "sha256-LxyMbMA6Antt8Uu4jCvmvYT9+Vm4ZUVz4XXFdd0O7Kk="; }; postPatch = '' substituteInPlace src/MQTTVersion.c \ --replace "namebuf[60]" "namebuf[120]" \ --replace "lib%s" "$out/lib/lib%s" ''; nativeBuildInputs = [ cmake ]; buildInputs = [ openssl ]; cmakeFlags = [ "-DPAHO_WITH_SSL=TRUE" ]; meta = with lib; { description = "Eclipse Paho MQTT C Client Library"; homepage = "https://www.eclipse.org/paho/"; license = licenses.epl20; maintainers = with maintainers; [ sikmir ]; platforms = platforms.unix; }; }