fix: allow specific unfree packages in 'audio' module

modules/common/default.nix

@@ -1,25 +1,18 @@
+let
+  flakePath = "/home/h/nix";
+in
 {
   inputs,
   outputs,
   dotsPath,
-  config,
   ...
 }:
 
-let
-  inherit (inputs.nixpkgs) lib;
-in
 {
   imports = [
     inputs.home-manager.nixosModules.default
   ];
 
-  options.nixpkgs.allowedUnfree = lib.mkOption {
-    type = lib.types.listOf lib.types.str;
-    default = [ ];
-  };
-
-  config = {
   system.stateVersion = "25.05";
 
   nix.settings.experimental-features = [
@@ -27,8 +20,7 @@ in
     "flakes"
   ];
 
-    nixpkgs.config.allowUnfreePredicate =
-      pkg: builtins.elem (lib.getName pkg) config.nixpkgs.allowedUnfree;
+  nixpkgs.config.allowUnfree = true;
 
   home-manager = {
     useGlobalPkgs = true;
@@ -52,6 +44,7 @@ in
 
   system.autoUpgrade = {
     enable = true;
+    flake = flakePath;
     flags = [
       "--recreate-lock-file"
       "--commit-lock-file"
@@ -62,5 +55,4 @@ in
     randomizedDelaySec = "45min";
     allowReboot = false;
   };
-  };
 }