anchor.diff:  
     buildInputs = [
       json_c
  -    libuuid
       openssl
       python3
       systemd
  
positive.code: { fetchFromGitHub
  , json_c
  , lib
  , libuuid
  , meson
  , ninja
  , openssl
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "libnvme";
    version = "1.2";
  
    outputs = [ "out" "man" ];
  
  