Add Seerr (Jellyseerr)

flake.nix

@@ -38,23 +38,20 @@
     {
       nixosConfigurations = {
         plexy = nixpkgs.lib.nixosSystem {
-          specialArgs =
-            let
-              system = "x86_64-linux";
-            in
-            {
-              pkgs = import nixpkgs {
-                inherit system;
-                config.allowUnfree = true;
-              };
-              pkgs-unstable = import nixpkgs-unstable {
-                inherit system;
-                config.allowUnfree = true;
-              };
-            };
-
+          system = "x86_64-linux";
           modules = [
             ./hosts/plexy
+            {
+              nixpkgs = {
+                overlays = [
+                  (final: prev: {
+                    unstable = import nixpkgs-unstable {
+                      system = final.system;
+                    };
+                  })
+                ];
+              };
+            }
             home-manager.nixosModules.home-manager
             {
               home-manager.useGlobalPkgs = true;