anchor.diff:      version = 3;
       owner = "olivere";
       repo = "elastic";
  -    rev = "v5.0.56";
  -    sha256 = "0r3khmsnsgzy6g0hhbhrfvz5djhawiiy1vczdcv92pyi6d6z36a8";
  +    rev = "v5.0.58";
  +    sha256 = "1csc50d0s7v0a80g5fdsmfy5flagnaw2ljkgmh7jylk3ywa7j1f4";
       goPackagePath = "gopkg.in/olivere/elastic.v5";
       propagatedBuildInputs = [
         errors
  
positive.code:     version = 3;
      owner = "rkt";
      repo = "rkt";
      rev = "34420f4b9194049312d3cbdc7507d4706931de14";
      sha256 = "0g3wmqbgr0cjmyzbwf6cc941w9z2w7q5gk5jqwwfy6vvman7mx41";
      subPackages = [
        "api/v1"
        "networking/netinfo"
  
negative.code: 
    distribution = buildFromGitHub {
      version = 3;
      rev = "bc3c7b0525e59d3ecfab3e1568350895fd4a462f";
      owner = "docker";
      repo = "distribution";
      sha256 = "059lrpafa9mxlqxb2q5kgkfwwq6hi85hggkx303l8bq856irrqzs";
      meta.useUnstable = true;
      date = "2017-11-23";
    };
  
    distribution_for_moby = buildFromGitHub {
  