anchor.diff:  {lib, stdenv, fetchurl, openssh}:
   
   stdenv.mkDerivation rec {
  -  name = "autossh-1.4g";
  +  pname = "autossh";
  +  version = "1.4g";
   
     src = fetchurl {
  -    url = "http://www.harding.motd.ca/autossh/${name}.tgz";
  +    url = "http://www.harding.motd.ca/autossh/${pname}-${version}.tgz";
       sha256 = "0xqjw8df68f4kzkns5gcah61s5wk0m44qdk2z1d6388w6viwxhsz";
     };
   
  
positive.code:   meta = with lib; {
      homepage = "https://www.harding.motd.ca/autossh/";
      description = "Automatically restart SSH sessions and tunnels";
      platforms = platforms.unix;
      maintainers = with maintainers; [ pSub ];
    };
  
negative.code: 
    nativeBuildInputs = [ openssh ];
  
    installPhase = ''
        install -D -m755 autossh      $out/bin/autossh                          || return 1
        install -D -m644 CHANGES      $out/share/doc/autossh/CHANGES            || return 1
        install -D -m644 README       $out/share/doc/autossh/README             || return 1
  