Use flatpacked vivaldi, flake update

flake.nix

@@ -24,6 +24,10 @@
     nixos-hardware = {
       url = "github:NixOS/nixos-hardware/master";
     };
+    nix-flatpak = {
+      url = "github:gmodena/nix-flatpak";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
@@ -86,6 +90,7 @@
                     home.stateVersion = osConfig.system.stateVersion;
                   }
                 )
+                inputs.nix-flatpak.homeManagerModules.nix-flatpak
               ];
               extraSpecialArgs = {
                 inherit inputs;
@@ -96,6 +101,7 @@
             };
           }
         )
+        inputs.nix-flatpak.nixosModules.nix-flatpak
         inputs.home-manager.nixosModules.home-manager
         inputs.photocatalog.nixosModules.photocatalog
         inputs.disko.nixosModules.disko