anchor.diff:    };
   
     ldap = buildFromGitHub {
  -    rev = "v2.2";
  +    rev = "v2.2.1";
       owner  = "go-ldap";
       repo   = "ldap";
  -    sha256 = "1q8wm1q5nclwfgzr07i42bppgm3nv447hgndp0y22k4fy8db1dpj";
  +    sha256 = "0l3nl8r5iy5pm8xj2i146wsx9vmyb1vczs3nk7wihw5l92jx6dyd";
       goPackageAliases = [
         "github.com/nmcclain/ldap"
         "github.com/vanackere/ldap"
  
positive.code:     repo = "collectd_exporter";
      sha256 = "165zsdn0lffb6fvxz75szmm152a6wmia5skb96k1mv59qbmn9fi1";
      buildInputs = [ prometheus_client_golang ];
      meta = with stdenv.lib; {
        description = "Relay server for exporting metrics from collectd to Prometheus";
        homepage = https://github.com/prometheus/alertmanager;
        license = licenses.asl20;
        maintainers = with maintainers; [ benley ];
        platforms = platforms.unix;
      };
    };
  
    prometheus_common = buildFromGitHub {
      date = "2016-02-11";
      rev = "23070236b1ebff452f494ae831569545c2b61d26";
      owner = "prometheus";
      repo = "common";
      sha256 = "111vqp3lqsdli7z5rnkrpcfv6yri0qjikyl70whwxzcvkqp9k42s";
      buildInputs = [ net prometheus_client_model httprouter logrus protobuf ];
      propagatedBuildInputs = [ golang_protobuf_extensions ];
    };
  
negative.code:   ## OFFICIAL GO PACKAGES
  
    appengine = buildFromGitHub {
      rev = "fb0c3ff44ee0478eeedf00179c01522463361d06";
      date = "2016-02-29";
      owner = "golang";
      repo = "appengine";
      sha256 = "100mf8cv0lj7lm94agrkvk244rb339w2z5f5g0iy4pmxgywj4kf4";
      goPackagePath = "google.golang.org/appengine";
      propagatedBuildInputs = [ protobuf net ];
    };
  
    crypto = buildFromGitHub {
      rev = "5dc8cb4b8a8eb076cbb5a06bc3b8682c15bdbbd3";
      date = "2016-02-25";
      owner    = "golang";
      repo     = "crypto";
      sha256 = "18c1vpqlj10z1id66hglgnv51d9gwphgsdvxgghc6mcm01f1g5xj";
      goPackagePath = "golang.org/x/crypto";
      goPackageAliases = [
        "code.google.com/p/go.crypto"
  