Added nh, added some options such as username and hardware config

flake.nix

@@ -36,11 +36,20 @@
        #};
        arm = "aarch64-linux";
        x86 = "x86_64-linux";
+       username = "kylekrein";
     in
     {
       nixosConfigurations = {
-        homepc = nixpkgs.lib.nixosSystem {
-           specialArgs = { hostname = "nixosbtw"; system = x86; inherit inputs; };
+        "${username}-homepc" = nixpkgs.lib.nixosSystem {
+           specialArgs = { 
+	    
+	    hwconfig = {
+		hostname = "${username}-homepc";
+		isLaptop = false;
+		system = x86;
+	    };
+	    inherit username;
+	   inherit inputs; };
            
            system = x86;
 	  #pkgs = import nixpkgs {
@@ -61,8 +70,16 @@
 		#nix-flatpak.nixosModules.default
 	   ];
         };
-        mac = nixpkgs.lib.nixosSystem {
-           specialArgs = { hostname = "nixos-macbook-kylekrein"; system = arm; inherit inputs; };
+        "${username}-mac" = nixpkgs.lib.nixosSystem {
+           specialArgs = { 
+	    hwconfig = {
+		hostname = "${username}-mac";
+		isLaptop = true;
+		system = arm;
+	    };
+	    inherit username;
+	   inherit inputs; };
+           
            system = arm;
 	  #pkgs = import nixpkgs {
 	#	system = arm;

nixos/configuration.nix

@@ -2,7 +2,7 @@
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
-{ config, pkgs, stylix, hostname, system, nixvim, inputs, ... }:
+{ config, pkgs, stylix, hwconfig, username, nixvim, inputs, ... }:
 
 {
   imports =
@@ -14,9 +14,9 @@
 
   # Bootloader.
   boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = if hostname == "nixosbtw" then true else false;
+  boot.loader.efi.canTouchEfiVariables = if hwconfig.hostname == "${username}-homepc" then true else false;
 
-  networking.hostName = hostname;
+  networking.hostName = hwconfig.hostname;
   # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
 
   # Configure network proxy if necessary
@@ -55,7 +55,7 @@
   services.udisks2.enable = true;
 
   # Define a user account. Don't forget to set a password with ‘passwd’.
-  users.users.kylekrein = {
+  users.users.${username} = {
     isNormalUser = true;
     description = "Aleksandr Lebedev";
     extraGroups = [ "networkmanager" "wheel" ];
@@ -69,7 +69,7 @@
   };
 
   # Allow unfree packages
-  nixpkgs.system = system;
+  nixpkgs.system = hwconfig.system;
   nixpkgs.config.allowUnfree = true;
   nixpkgs.config.allowBroken = true;
 
@@ -182,6 +182,13 @@
 		shiftwidth = 4;
 	};
   };
+
+  programs.nh = {
+    enable = true;
+    clean.enable = true;
+    clean.extraArgs = "--keep-since 4d --keep 3";
+    flake = "/home/${username}/nixos-config";
+  };
   #https://discourse.nixos.org/t/dolphin-does-not-have-mime-associations/48985/3
   # This fixes the unpopulated MIME menus
   #environment.etc."/xdg/menus/plasma-applications.menu".text = builtins.readFile "${pkgs.kdePackages.plasma-workspace}/etc/xdg/menus/plasma-applications.menu";
@@ -234,7 +241,7 @@
 
 
   programs.steam = {
- 	enable = if system == "x86_64-linux" then true else false;
+ 	enable = if hwconfig.system == "x86_64-linux" then true else false;
  	remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
  	dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server
   	localNetworkGameTransfers.openFirewall = true; # Open ports in the firewall for Steam Local Network Game Transfers
@@ -261,9 +268,9 @@
   };
 
   home-manager = {
-	extraSpecialArgs = {inherit pkgs; inherit hostname; inherit nixvim; inherit inputs;};
+	extraSpecialArgs = {inherit pkgs; inherit hwconfig; inherit username; inherit nixvim; inherit inputs;};
 	users = {
-		"kylekrein" = import ./home.nix;
+		"${username}" = import ./home.nix;
 	};
   };
   stylix = {
@@ -323,7 +330,7 @@
   
   programs.hyprland = {
   	enable = true;
-  	package = inputs.hyprland.packages."${system}".hyprland;
+  	package = inputs.hyprland.packages."${hwconfig.system}".hyprland;
   	xwayland.enable = true;
 	systemd.setPath.enable = true;
   };

nixos/home.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, stylix, hostname, inputs, ... }:
+{ config, pkgs, stylix, hwconfig, username, inputs, ... }:
 
   let
   #nur = import (builtins.fetchTarball {
@@ -19,11 +19,10 @@
     ];
   # Home Manager needs a bit of information about you and the paths it should
   # manage.
-  home.username = "kylekrein";
-  home.homeDirectory = "/home/kylekrein";
+  home.username = username;
+  home.homeDirectory = "/home/${username}";
   stylix = {
 	enable = true;
-	targets.hyprlock.enable = true;
   };
   qt = {
 	enable = true;

nixos/hyprland/hyprland.nix

@@ -1,4 +1,4 @@
-{ pkgs, lib, hostname, ... }:
+{ pkgs, lib, hwconfig, username, ... }:
 let
 toggle_monitors = ./toggle_monitors.sh;
 wallpaper-image = ./wallpaper.jpg;
@@ -13,7 +13,7 @@ in
 		enable = true;
 		xwayland.enable = true;
 		settings = {
-			monitor = if hostname == "nixosbtw" then [
+			monitor = if hwconfig.hostname == "${username}-homepc" then [
 				"DP-1,2560x1440@75,1600x0,1.6"
 				"DP-3,2560x1440@75,0x0,1.6"
 			] else ",highres,auto,1.6";
@@ -23,6 +23,7 @@ in
 			};
 
 			exec-once = [
+				"${if hwconfig.isLaptop then "brightnessctl set 25%" else ""}"
 				"dbus-update-activation-environment --systemd --all"
 				"${pkgs.waybar}/bin/waybar &"
 				"${pkgs.networkmanagerapplet}/bin/nm-applet &"

nixos/hyprland/waybar.nix

@@ -1,4 +1,4 @@
-{ pkgs, lib, hostname, ... }:
+{ pkgs, lib, hwconfig, ... }:
 
 {
   programs.waybar = {
@@ -34,7 +34,7 @@
         #"memory"
         #"temperature"
 	"hyprland/language"
-      ] ++ (if hostname != "nixosbtw" then [ "battery" ] else [ ])
+      ] ++ (if hwconfig.isLaptop then [ "battery" ] else [ ])
       ++ [
         "tray"
 	"custom/notification"

nixos/libvirt.nix

@@ -1,7 +1,4 @@
-{ pkgs, ... }:
-let
-	username = "kylekrein";
-in
+{ pkgs, username, ... }:
 {
   virtualisation = {
     libvirtd = {