outputs = { nixpkgs, ... }:

    outputs = { self, nixpkgs }:

        };
        packages.${system}.default = {
            pname = "rpx";
            version = "1.0";
            src = ./.;
            buildPhase = ''
              make install OPTLEVEL=3 PREFIX=$out
            '';
        };
        apps.${system}.default = {
            type = "app";
            program = "${self.packages.${system}.default}/bin/rpx";