Split up more nix functions

modules/system/devices/udev/default.nix

@@ -1,11 +1,6 @@
-{ pkgs, ... }:
+{ config, lib, pkgs, ... }:
 {
-  services.udev.packages = [
-    (pkgs.writeTextFile {
-      name = "10-oculus.rules";
-      text = ''KERNEL=="hidraw*", ATTRS{idVendor}=="0e6f", ATTRS{idProduct}=="0184", MODE="0660", TAG+="uaccess"'';
-      destination = "/etc/udev/rules.d/10-oculus.rules";
-    })
+  services.udev.packages = lib.mkIf config.system.desktop.enable [
     (pkgs.writeTextFile {
       name = "10-pdp.rules";
       text = ''SUBSYSTEM=="usb", ATTR{idVendor}=="2833", MODE="0666"'';

modules/system/services/general/portals/default.nix

@@ -9,8 +9,6 @@
         chooser_cmd = "${pkgs.slurp}/bin/slurp -f %o -or -B 00000066 -b 00000099";
       };
     };
-    extraPortals = with pkgs; [
-      xdg-desktop-portal-gnome
-    ];
+    extraPortals = with pkgs; [ xdg-desktop-portal-gnome ];
   };
 }

modules/system/settings/nix/default.nix

@@ -1,29 +1,24 @@
 { config, lib, pkgs, unstable, ... }:
 {
-  imports = [ ./gc ];
+  imports = [
+    ./gc
+    ./unfree
+  ];
 
-  options.nixpkgs.allowUnfreePackages = lib.mkOption {
-    type = with lib.types; listOf str;
+  nix = {
+    package = pkgs.lix;
+    settings = {
+      experimental-features = [
+        "nix-command"
+        "flakes"
+      ];
+      auto-optimise-store = true;
+      trusted-users = [ "@wheel" ];
+    };
   };
 
-  config = {
-    nix = {
-      package = pkgs.lix;
-      settings = {
-        experimental-features = [
-          "nix-command"
-          "flakes"
-        ];
-        auto-optimise-store = true;
-        trusted-users = [ "@wheel" ];
-      };
-    };
-
-    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;
-    };
+  _module.args.pkgsUnstable = import unstable {
+    inherit (pkgs.stdenv.hostPlatform) system;
+    inherit (config.nixpkgs) config;
   };
 }

modules/system/settings/nix/unfree/default.nix

@@ -0,0 +1,8 @@
+{ config, lib, ... }:
+{
+  options.nixpkgs.allowUnfreePackages = lib.mkOption {
+    type = with lib.types; listOf str;
+  };
+
+  config.nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) config.nixpkgs.allowUnfreePackages;
+}