{ stdenv, fetchFromGitHub, cmake }: stdenv.mkDerivation rec { name = "nlohmann_json-${version}"; version = "2.0.3"; src = fetchFromGitHub { owner = "nlohmann"; repo = "json"; rev = "v${version}"; sha256 = "192mg2y93g9q0jdn3fdffydpxk19nsrcv92kfip6srkdkwja18ri"; }; nativeBuildInputs = [ cmake ]; doCheck = true; checkTarget = "test"; crossAttrs = { cmakeFlags = "-DBuildTests=OFF"; doCheck = false; } // stdenv.lib.optionalAttrs (stdenv.cross.libc == "msvcrt") { cmakeFlags = "-DBuildTests=OFF -DCMAKE_SYSTEM_NAME=Windows"; }; 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; }; }