anchor.diff:      owner = "ipfs";
       repo = "ipfs-cluster";
       inherit rev;
  -    sha256 = "132whjyplcifq8747hcdrgbc0amhp618dg049jq5nyslcxfgdypm";
  +    sha256 = "1zqy4zzi33z16fny1dnhqa8z7czrggvbxdxs750gxzbnd9vqzda1";
     };
   
     nativeBuildInputs = [ gx-go ];
  
positive.code:   extraSrcPaths = [
      (fetchgx {
        inherit name src;
        sha256 = "0jwz3kd07i5fs0sxds80j8d338skhgxgxra377qxsk0cr2hhj2vm";
      })
    ];
  
  
negative.code: 
  buildGoPackage rec {
    name = "ipfs-cluster-${version}";
    version = "0.7.0";
    rev = "v${version}";
  
    goPackagePath = "github.com/ipfs/ipfs-cluster";
  