anchor.diff:    };
   
     core = buildFromGitHub {
  -    version = 2;
  -    rev = "e8409d73255791843585964791443dbad877058c";
  +    version = 3;
  +    rev = "6c9f9bf3130d143937e4adcef1cf1bb9f6899260";
       owner = "go-xorm";
       repo = "core";
  -    sha256 = "17b7i7p2jgh2y1pi077ckya4l9ksv341har3xmlpc7jzzysmm25b";
  -    date = "2017-03-17";
  +    sha256 = "0bjdnxpick0wk98mmcw98bvdhd1is8w305y27bbb7br20inj0izr";
  +    date = "2017-05-03";
     };
   
     cors = buildFromGitHub {
  
positive.code:     version = 3;
      owner = "minio";
      repo = "minio-go";
      rev = "fe31943bd4638093653a6a584dc1c6c6487e06c9";
      sha256 = "0l8la3ymhrjzwjf7n1a1s6lzbhl7a1ilsw0524lzq30x6g0a1xj1";
      meta.useUnstable = true;
      date = "2017-05-02";
    };
  
    missinggo = buildFromGitHub {
  
negative.code: 
    go-couchbase = buildFromGitHub {
      version = 3;
      rev = "b8f5b7e5e256b586d30ddf92f484ad91dc1e8c60";
      owner  = "couchbase";
      repo   = "go-couchbase";
      sha256 = "0z2h5n8jb494h1jim13cinznisnd9ygpzdar53z8ym91x4rxffzq";
      date = "2017-05-04";
      goPackageAliases = [
        "github.com/couchbaselabs/go-couchbase"
      ];
  