anchor.diff:  
     geoip2-golang = buildFromGitHub {
       version = 5;
  -    rev = "v1.2.0";
  +    rev = "v1.2.1";
       owner = "oschwald";
       repo = "geoip2-golang";
  -    sha256 = "1f8nwg0m2lfr9y2509drwqkrrqdwnd1v9pf9kyg0vq2g2wb18w6n";
  +    sha256 = "0g2g7mhwp5abjrp2x3jn736230jkvfz154922kpzjwyc2i34ynly";
       propagatedBuildInputs = [
         maxminddb-golang
       ];
  
positive.code:       mathutil
        strutil
      ];
      date = "2017-11-22";
    };
  
    queue = buildFromGitHub {
      version = 3;
      rev = "v1.1.0";
      owner  = "eapache";
      repo   = "queue";
      sha256 = "1zbgf7pdi934ryh129yf1m6f6cxwwclmi0n2myqi8rg3lz28j2kz";
    };
  
    quotedprintable_v3 = buildFromGitHub {
  
negative.code:   };
  
    core = buildFromGitHub {
      version = 5;
      rev = "7d5d723a716c3c1adf5f478990ff7a2ff77d3abe";
      owner = "go-xorm";
      repo = "core";
      sha256 = "1fykwdmvs9awf3px7x327r3sb5fy7s8c57fxdnhck1jzs2kb4c53";
      date = "2018-03-08";
    };
  
    cors = buildFromGitHub {
  