anchor.diff:  
     src = fetchurl {
       url = "https://download.electrum.org/${version}/Electrum-${version}.tar.gz";
  -    sha256 = "1fvjiagi78f32nxgr2rx8jas8hxfvpp1c8fpfcalvykmlhdc2gva";
  +    sha256 = "0yg6ld92a4xgn7y8i51hmr3kmgmrbrjwniikkmyq9q141h2drb80";
     };
   
     postUnpack = ''
  
positive.code: { lib, stdenv
  , fetchurl
  , fetchFromGitHub
  , wrapQtAppsHook
  
negative.code:     requests
      tlslite-ng
      # plugins
      btchip
      ckcc-protocol
      keepkey
      trezor
    ] ++ lib.optionals enableQt [ pyqt5 qdarkstyle ];
  
    preBuild = ''
  