anchor.diff:        pkgs.libpcap
       ];
       meta.useUnstable = true;
  -    date = "2017-02-15";
  +    date = "2017-02-17";
     };
   
     etcd_client = buildFromGitHub {
  
positive.code: 
    lxd = buildFromGitHub {
      version = 2;
      rev = "lxd-2.8";
      owner  = "lxc";
      repo   = "lxd";
      sha256 = "0z03iz85pz52jvbc3sy05046dqj2nainicqr8xfr3551p9338pki";
      excludedPackages = "test"; # Don't build the binary called test which causes conflicts
      buildInputs = [
        crypto
  
negative.code:     version = 2;
      owner = "minio";
      repo = "minio-go";
      rev = "7a3619e41885dcbcfafee193c10eb80530c2be53";
      sha256 = "0xvjimlc788ax48zk84h7pp53f3zwqwlxp9cf214am3r1ypy6fs4";
      meta.useUnstable = true;
      date = "2017-02-17";
    };
  
    missinggo = buildFromGitHub {
  