refactor(settings): remove redundant options

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "0x29a ecosystem NixOS flake";
+  description = "0x29a NixOS flake";
   
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
@@ -28,8 +28,6 @@
           ./hosts/default/configuration.nix
           home-manager.nixosModules.home-manager
           {
-            home-manager.useGlobalPkgs = true;
-            home-manager.useUserPackages = true;
             home-manager.extraSpecialArgs = { inherit inputs; };
             home-manager.users.aaron.imports = [
               nixvim.homeModules.nixvim
@@ -47,8 +45,6 @@
           ./hosts/neon/configuration.nix
           home-manager.nixosModules.home-manager
           {
-            home-manager.useGlobalPkgs = true;
-            home-manager.useUserPackages = true;
             home-manager.extraSpecialArgs = { inherit inputs; };
             home-manager.users.aaron.imports = [
               nixvim.homeModules.nixvim

hosts/neon/configuration.nix

@@ -4,10 +4,10 @@
   imports = [
     ../../modules/nixos/audio.nix
     ../../modules/nixos/bootloader.nix
-    ../../modules/nixos/compositor.nix
     ../../modules/nixos/gnupg.nix
     ../../modules/nixos/locales.nix
     ../../modules/nixos/networking.nix
+    ../../modules/nixos/niri.nix
     ../../modules/nixos/noctalia.nix
     ../../modules/nixos/openssh.nix
     ../../modules/nixos/packages.nix

modules/nixos/settings.nix

@@ -1,8 +1,36 @@
 { config, lib, pkgs, ... }:
 
 {
-  # use flakes and nix command
-  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+  nix = {
+    # nix settings
+    settings = {
+      # enable flakes and nix-command
+      experimental-features = [ "nix-command" "flakes" ];
+      # auto-optimize my nix-store
+      auto-optimise-store = true;
+      # use all cores
+      max-jobs = "auto";  
+      # use all available cores per job
+      cores = 0;          
+      # add trusted substituters (binary caches)
+      substituters = [
+        "https://cache.nixos.org"
+        "https://nix-community.cachix.org"
+      ];
+      # add keys
+      trusted-public-keys = [
+        "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+      ];
+    };
+    
+    # enable automatic garbage collection
+    gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "--delete-older-than 7d";
+    };
+  };
 
   # links /libexec from derivations to /run/current-system/sw
   environment.pathsToLink = [ "/libexec" ];