anchor.diff:  
     dbus = buildFromGitHub {
       version = 3;
  -    rev = "bd29ed602e2cf4207ebcabcd530259169e4289ba";
  +    rev = "97646858c46433e4afb3432ad28c12e968efa298";
       owner = "godbus";
       repo = "dbus";
  -    sha256 = "07ms9vg7pay4jbhjcavapfjsvxid0968m97fl24qwvcl2znmv089";
  -    date = "2017-07-07";
  +    sha256 = "17849dfzyqz1b6f6ysz5wc3n8mb32jgaannc47jancif3z0gq5x1";
  +    date = "2017-08-22";
     };
   
     decimal = buildFromGitHub {
  
positive.code: 
    pprof = buildFromGitHub {
      version = 3;
      rev = "2191094077cac7cd05ced16c0768a2e57fe5371d";
      owner  = "google";
      repo   = "pprof";
      sha256 = "03w6sbwpannn8klkpf4l1jpskk95473132rs1a6273psvf40jik6";
      date = "2017-08-18";
      propagatedBuildInputs = [
        demangle
      ];
  
negative.code:       purgeTimestamps = true;
        inherit name;
        url = "https://code.googlesource.com/google-api-go-client/+archive/${rev}.tar.gz";
        sha256 = "0fygbrnz8ddfp2iwadb7ivq7rxrpgxvfj88f7jczqdhrakf5bkjv";
      };
      buildInputs = [
        appengine
  