anchor.diff:      repo = "yaml";
       sha256 = "0fh5r36y69pkl5byxgg7y75ks857p60gy6sliiyy21cg43hkcq61";
       propagatedBuildInputs = [
  -      candiedyaml
  +      yaml_v2
       ];
     };
   
  
positive.code:     owner  = "cznic";
      repo   = "bufs";
      sha256 = "0551h2slsb7lg3r6yif65xvf6k8f0izqwyiigpipm3jhlln37c6p";
    };
  
    candiedyaml = buildFromGitHub {
      version = 1;
      date = "2016-04-29";
      rev = "99c3df83b51532e3615f851d8c2dbb638f5313bf";
      owner  = "cloudfoundry-incubator";
      repo   = "candiedyaml";
      sha256 = "104giv2wjiispfsm82q3lk5qjvfjgrqhhnxm2yma9i21klmvir0y";
    };
  
    cascadia = buildFromGitHub {
  
negative.code:       govalidator
        aws-sdk-go
        speakeasy
        etcd_client
        go-mssqldb
        duo_api_golang
  