anchor.diff:  { stdenv, libXScrnSaver, makeWrapper, fetchurl, wrapGAppsHook, gtk3, unzip, atomEnv, libuuid, at-spi2-atk }:
   
   let
  -  version = "4.1.5";
  +  version = "4.2.8";
     name = "electron-${version}";
   
     throwSystem = throw "Unsupported system: ${stdenv.hostPlatform.system}";
  
positive.code:     src = {
        i686-linux = fetchurl {
          url = "https://github.com/electron/electron/releases/download/v${version}/electron-v${version}-linux-ia32.zip";
          sha256 = "0rqaydlg7wkccks7crwpylad0bsz8knm82mpb7hnj68p9njxpsbz";
        };
        x86_64-linux = fetchurl {
          url = "https://github.com/electron/electron/releases/download/v${version}/electron-v${version}-linux-x64.zip";
          sha256 = "0xwvn41pvpsrx54waix8kmg3w1f1f9nmfn08hf9bkgnlgh251shy";
        };
        armv7l-linux = fetchurl {
          url = "https://github.com/electron/electron/releases/download/v${version}/electron-v${version}-linux-armv7l.zip";
          sha256 = "172yq2m4i0pf72xr6w3xgkxfakkx2wrc54aah5j3nr6809bcnzji";
        };
        aarch64-linux = fetchurl {
          url = "https://github.com/electron/electron/releases/download/v${version}/electron-v${version}-linux-arm64.zip";
          sha256 = "0gcgvgplg9c2sm53sa4nll4x486c4m190ma9a98xfx9mp9vy55vq";
        };
      }.${stdenv.hostPlatform.system} or throwSystem;
  
  
negative.code: 
      src = fetchurl {
        url = "https://github.com/electron/electron/releases/download/v${version}/electron-v${version}-darwin-x64.zip";
        sha256 = "083v8k17b596fa63a7qrwyn2k8pd5vmg9yijbqbnpfcg4ja3bjx9";
      };
  
      buildInputs = [ unzip ];
  