Fix unfree predicate by stealing unfreepackages from Majiir

modules/home/programs/misc/gaming/default.nix

@@ -1,7 +1,7 @@
 { ... }:
 {
   imports = [
-    ./launchers
     ./emulators
+    ./launchers
   ];
 }

modules/home/programs/misc/gaming/launchers/default.nix

@@ -7,7 +7,7 @@
     steam-run
   ];
 
-  nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
+  nixpkgs.allowUnfreePackages = [
     "steam"
     "steam-unwrapped"
   ];

modules/home/programs/misc/headless/default.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ lib, pkgs, ... }:
 {
   home.packages = with pkgs; [
     dua

modules/home/settings/nix/default.nix

@@ -1,16 +1,24 @@
 { config, lib, pkgs, unstable, ... }:
 {
-  nix = {  
-    package = lib.mkForce pkgs.nix;
-    settings.experimental-features = [
-      "nix-command"
-      "flakes"
-    ];
-    registry.unstable.flake = unstable;
+  options.nixpkgs.allowUnfreePackages = lib.mkOption {
+    type = with lib.types; listOf str;
   };
 
-  _module.args.pkgsUnstable = import unstable {
-    inherit (pkgs.stdenv.hostPlatform) system;
-    inherit (config.nixpkgs) config;
+  config = {
+    nix = {
+      package = lib.mkForce pkgs.nix;
+      settings.experimental-features = [
+        "nix-command"
+        "flakes"
+      ];
+      registry.unstable.flake = unstable;
+    };
+
+    nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) config.nixpkgs.allowUnfreePackages;
+
+    _module.args.pkgsUnstable = import unstable {
+      inherit (pkgs.stdenv.hostPlatform) system;
+      inherit (config.nixpkgs) config;
+    };
   };
 }