Like this:
hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.mkDriver {
version = "560.35.03";
sha256_64bit = "";
sha256_aarch64 = "";
openSha256 = "";
settingsSha256 = "";
persistencedSha256 = "";
};
""
is a string of zero characters, i.e., an empty string.
You can also use lib.fakeHash
, but that’s unnecessary here.