anchor.diff:  
     pq = buildFromGitHub {
       version = 6;
  -    rev = "90697d60dd844d5ef6ff15135d0203f65d2f53b8";
  +    rev = "v1.0.0";
       owner  = "lib";
       repo   = "pq";
  -    sha256 = "0h6846rwbdkxwl22v4h1i1dq91bxk3v87xla2a34cjigdh9grx10";
  -    date = "2018-05-23";
  +    sha256 = "d8ef5595d8a6834ae571bbed3dbaf4dde2c2e09ca7b34ae67b198888579a0510";
     };
   
     predicate = buildFromGitHub {
  
positive.code:     version = 6;
      owner = "libp2p";
      repo = "go-libp2p-crypto";
      rev = "v1.6.2";
      sha256 = "03ij86hq40cpnnxgjka365xy0sb3dbp38sdwpvb6912hrsypp8qp";
      propagatedBuildInputs = [
        btcd
        ed25519
  
negative.code: 
    gopacket = buildFromGitHub {
      version = 6;
      rev = "v1.1.15";
      owner = "google";
      repo = "gopacket";
      sha256 = "d6e86cb45252eae2a01dc2f5bae1c8ae889f14a2a8b90922d7e0709adab73feb";
      buildInputs = [
        pkgs.libpcap
        pkgs.pf-ring
  