anchor.diff:    };
   
     ini = buildFromGitHub {
  -    rev = "0.0.0";
  +    rev = "v1.11.0";
       owner  = "go-ini";
       repo   = "ini";
  -    sha256 = "0y94vqvi072ha5lw1pif5br856glz42mvpk37cbw5b5vvpdlndcl";
  +    sha256 = "10q0nksm4z91vyzhawdrmvabr847h15zl9jwh7p6kp2cb728hmbq";
     };
   
     flagfile = buildFromGitHub {
       date = "2015-02-13";
  -    rev = "0.0.0";
  +    rev = "871ce569c29360f95d7596f90aa54d5ecef75738";
       owner  = "spacemonkeygo";
       repo   = "flagfile";
  -    sha256 = "0fr5kh0q99rm7gmymd6v4qzjqp9grv8av7ffpdvp6h35pmj7nzvg";
  +    sha256 = "0s7g6xsv5y75gzky43065r7mfvdbgmmr6jv0w2b3nyir3z00frxn";
     };
   
     iochan = buildFromGitHub {
  
positive.code:   };
  
    go-radix = buildFromGitHub {
      rev = "0.0.0";
      owner  = "armon";
      repo   = "go-radix";
      sha256 = "018f9yxs33bq3lcdw06dpqm9426nfa7xkrpj4rrja3wng3m0fbcl";
      date = "2016-01-15";
    };
  
  
negative.code: 
    go-difflib = buildFromGitHub {
      date = "2016-01-10";
      rev = "792786c7400a136282c1664665ae0a8db921c6c2";
      owner  = "pmezard";
      repo   = "go-difflib";
      sha256 = "0xhjjfvx97zkms5004v1k3prc5g1kljiayhf05v0n0yf89s5r28r";
    };
  
    go-dockerclient = buildFromGitHub {
      date = "2016-05-01";
      rev = "7764ab7e9799b613f6f5eb52254f96f01c0ac8d3";
      owner = "fsouza";
      repo = "go-dockerclient";
      sha256 = "0ivppfwbc5l5fnjpa0w0xwn3b1p3qbqcrhk2wj5pf4ibn4a4y17g";
      propagatedBuildInputs = [
        docker_for_go-dockerclient
        go-cleanhttp
        mux
      ];
    };
  
    go-etcd = buildFromGitHub {
  