anchor.diff:  
     preBuild = ''
       (cd go/src/k8s.io/kops
  -     go-bindata -o upup/models/bindata.go -pkg models -prefix upup/models/ upup/models/...
  -     go-bindata -o federation/model/bindata.go -pkg model -prefix federation/model federation/model/...)
  +     go-bindata -o upup/models/bindata.go -pkg models -prefix upup/models/ upup/models/...)
     '';
   
     postInstall = ''
  
positive.code:     rev = version;
      owner = "kubernetes";
      repo = "kops";
      sha256 = "12nyr0iw1xwp60apli3nlq2vyn4jk3qjrb404m2syx2mqbnn47my";
    };
  
    buildInputs = [go-bindata];
  
negative.code: 
  { stdenv, lib, buildGoPackage, fetchFromGitHub, go-bindata }:
  
  buildGoPackage rec {
    name = "kops-${version}";
    version = "1.9.0";
  
    goPackagePath = "k8s.io/kops";
  
  