anchor.diff:      owner = "miekg";
       repo = "mmark";
       rev = "8b498b013a3e10b12864c2023a59d490c9d4bf5b";
  +    date = "2017-04-07";
       sha256 = "0srih857ry0a1bg98clr3yvsxpddlks17pm008igynh93mplvfsh";
  -    buildInputs = [
  +    propagatedBuildInputs = [
         toml
       ];
  -    date = "2017-04-07";
     };
   
     moby = buildFromGitHub {
  
positive.code:       pflag
        purell
        text
        toml
        viper
        websocket
        yaml_v2
  
negative.code:     ];
    };
  
    gitmap = buildFromGitHub {
      version = 2;
      rev = "dcb907b39a0690430d435eb8f63cd8811961231f";
      date = "2017-02-17";
      owner = "bep";
      repo = "gitmap";
      sha256 = "1zykf519xplb23lj0rjggpgbmd375l0zhzx29q4vxrsppyjsqzkk";
    };
  
    gjson = buildFromGitHub {
      version = 2;
      owner = "tidwall";
  