anchor.diff:      sha256 = "0chij9mja3pwgmyvjcbp86xh9h9v1ljgpvscph6jxa1k1pp9dfah";
       propagatedBuildInputs = [
         crypto
  +      sys
       ];
     };
   
  
positive.code:     ];
    };
  
    gjson = buildFromGitHub {
      version = 2;
      owner = "tidwall";
  
negative.code:     owner = "miekg";
      repo = "mmark";
      rev = "8b498b013a3e10b12864c2023a59d490c9d4bf5b";
      date = "2017-04-07";
      sha256 = "0srih857ry0a1bg98clr3yvsxpddlks17pm008igynh93mplvfsh";
      propagatedBuildInputs = [
        toml
      ];
    };
  
    moby = buildFromGitHub {
  