anchor.diff: -{ stdenv, fetchgit
  +{ stdenv, fetchFromGitHub, fetchpatch
   , autoconf
   , automake
   , libevent
  
positive.code: 
    doCheck = true;
  
    meta = {
      description = "Secure parasitic rdate replacement";
      homepage = https://github.com/ioerror/tlsdate;
      maintainers = [ stdenv.lib.maintainers.tv ];
      platforms = stdenv.lib.platforms.allBut [ "darwin" ];
    };
  }
  
negative.code: , openssl
  }:
  
  stdenv.mkDerivation rec {
    version = "0.0.13";
    name = "tlsdate-${version}";
  
    src = fetchFromGitHub {
      owner = "ioerror";
      repo = "tlsdate";
      rev = name;
      sha256 = "0w3v63qmbhpqlxjsvf4k3zp90k6mdzi8cdpgshan9iphy1f44xgl";
    };
  
    patches = [
      (fetchpatch {
        name = "tlsdate-no_sslv3.patch";
        url = "https://github.com/ioerror/tlsdate/commit/f9d3cba7536d1679e98172ccbddad32bc9ae490c.patch";
        sha256 = "0prv46vxvb4paxaswmc6ix0kd5sp0552i5msdldnhg9fysbac8s0";
      })
    ];
  
    buildInputs = [
      autoconf
  