{ stdenv, fetchFromGitHub, cmake }: stdenv.mkDerivation rec { pname = "nlohmann_json"; version = "3.6.1"; src = fetchFromGitHub { owner = "nlohmann"; repo = "json"; rev = "v${version}"; sha256 = "1dgx3j9pb0f52dh73z8dpwdy79bra1qi5vpl66b9inq4gamf813z"; }; nativeBuildInputs = [ cmake ]; enableParallelBuilding = true; cmakeFlags = [ "-DBuildTests=${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; }; }