anchor.diff:    ];
   
     buildInputs = [
  +    gperftools
       libcap
       libevent
       libscrypt
       libseccomp
       libsodium
       openssl
  +    systemd_lib
       zlib
     ];
   
  
positive.code: , fetchurl
  , perl
  
  , libcap
  , libevent
  , libscrypt
  , libseccomp
  , libsodium
  , openssl
  , zlib
  }:
  
  stdenv.mkDerivation rec {
    name = "tor-0.2.9.10";
  
    src = fetchurl {
      url = "https://www.torproject.org/dist/${name}.tar.gz";
      hashOutput = false;
      sha256 = "d611283e1fb284b5f884f8c07e7d3151016851848304f56cfdf3be2a88bd1341";
    };
  
    nativeBuildInputs = [
  
negative.code:     "--sysconfdir=/etc"
      "--localstatedir=/var"
      "--disable-unittests"
      "--enable-systemd"
      "--with-tcmalloc"
    ];
  
    preInstall = ''
  