fix flatpak missing variable on stylix

flake.lock

@@ -1060,11 +1060,11 @@
     },
     "nixpkgs_6": {
       "locked": {
-        "lastModified": 1735291276,
-        "narHash": "sha256-NYVcA06+blsLG6wpAbSPTCyLvxD/92Hy4vlY9WxFI1M=",
+        "lastModified": 1735471104,
+        "narHash": "sha256-0q9NGQySwDQc7RhAV2ukfnu7Gxa5/ybJ2ANT8DQrQrs=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "634fd46801442d760e09493a794c4f15db2d0cbb",
+        "rev": "88195a94f390381c6afcdaa933c2f6ff93959cb4",
         "type": "github"
       },
       "original": {
@@ -1304,11 +1304,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1735445831,
-        "narHash": "sha256-XfC/uQO77JXC4DSOYUjRI7f46xF7Pz2Ipo4z0fYAzdo=",
+        "lastModified": 1735532154,
+        "narHash": "sha256-b+Yz6cOqcDmWYt8BIifTrY1n8q5zTJEHuEh/16nhS7k=",
         "owner": "Gerg-L",
         "repo": "spicetify-nix",
-        "rev": "ffff5a333a9dea5f3fba352239c5f445b0788083",
+        "rev": "52c3363e4a6896c263657491e8177ee8b63af3b4",
         "type": "github"
       },
       "original": {

hosts/laptop/configuration.nix

@@ -28,6 +28,9 @@
 
   home-manager.users."${config.var.username}" = import ./home.nix;
 
+  home-manager.sharedModules =
+    [{ stylix.targets.gtk.flatpakSupport.enable = false; }];
+
   # users.users."${config.var.username}".extraGroups = [ "scanner" "lp" ];
   # hardware.sane.enable = true;
 

nixos/home-manager.nix

@@ -2,6 +2,7 @@
   home-manager = {
     useGlobalPkgs = true;
     useUserPackages = true;
+    backupFileExtension = "hm-backup";
     extraSpecialArgs = { inherit inputs; };
   };
 }