anchor.diff:      owner = "spesmilo";
       repo = "electrum";
       rev = version;
  -    sha256 = "06vcbj9p96d8v4xjlygzr74lqllb9adn8k0racajzq61ijb0imi2";
  +    sha256 = "0cmdyfabllw4wnpqpdxp3l6hjnm0cvkwxn0z8ph4x54sf4zq9iz3";
   
       extraPostFetch = ''
         mv $out ./all
  
positive.code: }:
  
  let
    version = "4.0.7";
  
    libsecp256k1_name =
      if stdenv.isLinux then "libsecp256k1.so.0"
  
negative.code: 
    src = fetchurl {
      url = "https://download.electrum.org/${version}/Electrum-${version}.tar.gz";
      sha256 = "1fvjiagi78f32nxgr2rx8jas8hxfvpp1c8fpfcalvykmlhdc2gva";
    };
  
    postUnpack = ''
  