anchor.diff:    vault-api = buildFromGitHub {
       inherit (vault) rev owner repo sha256;
       subPackages = [ "api" ];
  -    propagatedBuildInputs = [ hcl structs go-cleanhttp mapstructure ];
  +    propagatedBuildInputs = [
  +      hcl
  +      structs
  +      go-cleanhttp
  +      go-multierror
  +      mapstructure
  +    ];
     };
   
     vcs = buildFromGitHub {
  
positive.code:   };
  
    consul-template = buildFromGitHub {
      rev = "0.0.1";
      owner = "hashicorp";
      repo = "consul-template";
      sha256 = "0zcx315f7xfw1bkxx2835zh8ql3zvwnqnzb8algkdqx7403jl6c5";
  
      buildInputs = [
        consul-api
  
negative.code:   };
  
    sys = buildFromGitHub {
      rev = "b323466d0bc6669362b0836480b30452d2c00db9";
      date = "2016-04-05";
      owner  = "golang";
      repo   = "sys";
      sha256 = "16f1ij0vsvrci0qvncw9pzgcqxzfb7n2py7fibzq0b7azw9c3nih";
      goPackagePath = "golang.org/x/sys";
      goPackageAliases = [
        "github.com/golang/sys"
  