{ stdenv, fetchFromGitHub, cmake }: stdenv.mkDerivation rec { name = "nlohmann_json-${version}"; version = "3.4.0"; src = fetchFromGitHub { owner = "nlohmann"; repo = "json"; rev = "v${version}"; sha256 = "1140gz5za7yvfcphdgxaq1dm4b1vxy1m8d1w0s0smv4vvdvl26ym"; }; nativeBuildInputs = [ cmake ]; enableParallelBuilding = true; cmakeFlags = [ "-DBuildTests=${if doCheck then "ON" else "OFF"}" ]; doCheck = stdenv.hostPlatform == stdenv.buildPlatform; meta = with stdenv.lib; { description = "Header only C++ library for the JSON file format"; homepage = https://github.com/nlohmann/json; license = licenses.mit; platforms = platforms.all; }; }