anchor.diff:  
     buildInputs = [
       expat
  -    libidn
  +    libidn2
       ncurses
  -    openssl_1-0-2
  +    openssl
       readline
       zlib
     ];
  
positive.code:     boolWt;
  in
  stdenv.mkDerivation rec {
    name = "lftp-4.8.0";
  
    src = fetchurl {
      urls = [
        "https://lftp.yar.ru/ftp/${name}.tar.bz2"
        "https://lftp.yar.ru/ftp/old/${name}.tar.bz2"
      ];
      multihash = "QmeVeVg9bMdfEuYcpLDfLtxH6xG9RkpwXruvMS3ThyXzEw";
      sha256 = "64e8b122aba45cb2c1cc0f0c2065c6e62415679aca8b13b94600bddfbf18447c";
    };
  
    nativeBuildInputs = [
  
negative.code: 
  , expat
  , less
  , libidn2
  , ncurses
  , openssl
  , readline
  , zlib
  }:
  