anchor.diff:  
   python3Packages.buildPythonApplication rec {
     pname = "chia";
  -  version = "1.2.3";
  +  version = "1.2.5";
   
     src = fetchFromGitHub {
       owner = "Chia-Network";
       repo = "chia-blockchain";
       rev = version;
       fetchSubmodules = true;
  -    sha256 = "sha256-nK/Zk2zgIdrRtw3+VkUXQWfI9j29XFDOR95Dvbn07eA=";
  +    sha256 = "sha256-3TRjOAlZfcvDKHecagA+hXRg7HqiD6NNegi956LEXS8=";
     };
   
     patches = [
  
positive.code:   disabledTests = [
      "test_spend_through_n"
      "test_spend_zero_coin"
    ];
  
    postPatch = ''
  
negative.code:       --replace "aiohttp==3.7.4" "aiohttp>=3.7.4" \
        --replace "sortedcontainers==2.3.0" "sortedcontainers>=2.3.0" \
        --replace "click==7.1.2" "click>=7.1.2" \
        --replace "clvm==0.9.7" "clvm>=0.9.7" \
  
      ln -sf ${cacert}/etc/ssl/certs/ca-bundle.crt mozilla-ca/cacert.pem
    '';
  