anchor.diff:  let
   
     cfg = config.programs.firefox;
  +
  +  extensionPath = "extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}";
   
   in
   
  
positive.code:         default = pkgs.firefox-unwrapped;
          defaultText = "pkgs.firefox-unwrapped";
          description = "The unwrapped Firefox package to use.";
        };
  
        enableAdobeFlash = mkOption {
  
negative.code:         };
        in
          [ (wrapper cfg.package { }) ];
  
      home.file.".mozilla/${extensionPath}" = mkIf (cfg.extensions != []) (
        let
          extensionsEnv = pkgs.buildEnv {
            name = "hm-firefox-extensions";
            paths = cfg.extensions;
          };
        in
          {
            source = "${extensionsEnv}/share/mozilla/${extensionPath}";
            recursive = true;
          }
      );
    };
  }
  