anchor.diff:  
     ini = buildFromGitHub {
       version = 2;
  -    rev = "v1.21.1";
  +    rev = "v1.23.0";
       owner  = "go-ini";
       repo   = "ini";
  -    sha256 = "1icbs1ma8vinzq2bbgqjvq4kdca01q0mk5jcd0qj8zjx8pfbz444";
  +    sha256 = "0jb3i0nivqnsybgsran6b0w35n97k40x48hdszi4xbiiw3b2n007";
     };
   
     ini_v1 = buildFromGitHub {
       version = 2;
  -    rev = "v1.21.1";
  +    rev = "v1.23.0";
       owner  = "go-ini";
       repo   = "ini";
       goPackagePath = "gopkg.in/ini.v1";
  -    sha256 = "12f6iyy6gdysi94vl84k3wk7jmccmw1j75ljmbmysglxakdm2n6h";
  +    sha256 = "1x7a9g9njc5ggjvlzc08phpjpd3pkzl4z2fy24r75q3c3i17xfj5";
     };
   
     inject = buildFromGitHub {
  
positive.code: 
    grpc = buildFromGitHub {
      version = 2;
      date = "2016-12-19";
      rev = "09aecb094ef6b9ebe49dd999f52c505beeeb402e";
      owner = "grpc";
      repo = "grpc-go";
      sha256 = "1h75cl54qvp3n68mpvmd9b1s80pygwabb0z40vsbj29dvxh3kjq7";
      goPackagePath = "google.golang.org/grpc";
      goPackageAliases = [
        "github.com/grpc/grpc-go"
  
negative.code: 
    roaring = buildFromGitHub {
      version = 2;
      rev = "v0.3.3";
      owner  = "RoaringBitmap";
      repo   = "roaring";
      sha256 = "11ygaw1py0vnpj9rx4avvr4q2jx2pald368swl8iwxn7hd6wxncl";
      propagatedBuildInputs = [
        go-unsnap-stream
        msgp
  