anchor.diff:  
   buildGoPackage rec {
     name = "ipfs-cluster-${version}";
  -  version = "0.8.0";
  +  version = "0.9.0";
     rev = "v${version}";
   
     goPackagePath = "github.com/ipfs/ipfs-cluster";
  
positive.code:   extraSrcPaths = [
      (fetchgx {
        inherit name src;
        sha256 = "0vqj6h885dy0d3zabris8f5sbqdwm5ljhpf8z466pwm7qx8m5afn";
      })
    ];
  
  
negative.code:     owner = "ipfs";
      repo = "ipfs-cluster";
      inherit rev;
      sha256 = "1bxwcp0355f1ykjcidbxv218zp9d20nma7lnpn9xcjqc8vaq03kn";
    };
  
    nativeBuildInputs = [ gx-go ];
  