anchor.diff:    };
   
     linux = stdenv.mkDerivation rec {
  -    inherit pname meta;
  -    version = "4.4.0";
  +    inherit pname meta version;
       src = fetchurl {
         url = "https://downloads.slack-edge.com/linux_releases/slack-desktop-${version}-amd64.deb";
         inherit sha256;
  
positive.code:   };
  
    darwin = stdenv.mkDerivation rec {
      inherit pname meta;
      version = "4.4.1";
  
      phases = [ "installPhase" ];
  
  
negative.code:   throwSystem = throw "Unsupported system: ${system}";
  
    sha256 = {
      x86_64-darwin = "0z731q00bwljlcmbjwqphyys7skqms1vg87pyi4nsvjmc7kjx7qg";
      x86_64-linux = "0wrs0i2bqv21ivy8s88khbww28b3gsw4abbbbjc76mqma9b0bajs";
    }.${system} or throwSystem;
  
    version = {
      x86_64-darwin = "4.4.2";
      x86_64-linux = "4.4.2";
    }.${system} or throwSystem;
  
    meta = with stdenv.lib; {
  