refactor(hosts): simplify configuration imports across hosts

modules/hosts/arcturus/config.nix

@@ -2,7 +2,6 @@
 {
   flake.modules.nixos.arcturus =
     {
-      pkgs,
       hostName,
       userName,
       ...
@@ -10,7 +9,6 @@
     {
       imports = with config.flake.modules.nixos; [
         boot
-        hardware
         networking
         virtualisation
         services
@@ -109,10 +107,6 @@
         firewall.enable = false;
       };
 
-      environment.systemPackages = with pkgs; [
-        nvtopPackages.full
-      ];
-
       system.stateVersion = "26.05";
     };
 }

modules/hosts/arcturus/default.nix

@@ -14,7 +14,14 @@ in
 {
   flake.nixosConfigurations."${hostName}" = nixpkgs.lib.nixosSystem {
     inherit system;
-    specialArgs = { inherit hostName userName userEmail; };
+    specialArgs = {
+      inherit
+        hostName
+        userName
+        userEmail
+        system
+        ;
+    };
     modules = [
       config.flake.modules.nixos.core
       config.flake.modules.nixos.${hostName}

modules/hosts/arcturus/hardware.nix

@@ -1,11 +1,17 @@
+{ config, ... }:
 {
   flake.modules.nixos.arcturus =
     {
-      config,
       lib,
+      pkgs,
+      system,
       ...
-    }:
+    }@innerArgs:
     {
+      imports = with config.flake.modules.nixos; [
+        hardware
+      ];
+
       boot.initrd.availableKernelModules = [
         "nvme"
         "xhci_pci"
@@ -18,15 +24,13 @@
       boot.kernelModules = [ "kvm-amd" ];
       boot.extraModulePackages = [ ];
 
-      # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
-      # (the default) this is the recommended approach. When using systemd-networkd it's
-      # still possible to use this option, but it's recommended to use it in conjunction
-      # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
-      networking.useDHCP = lib.mkDefault true;
-      # networking.interfaces.eno1.useDHCP = lib.mkDefault true;
-      # networking.interfaces.wlp10s0f3u2i2.useDHCP = lib.mkDefault true;
+      hardware.cpu.amd.updateMicrocode = lib.mkDefault innerArgs.config.hardware.enableRedistributableFirmware;
 
-      nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
-      hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+      networking.useDHCP = lib.mkDefault true;
+      nixpkgs.hostPlatform = lib.mkDefault system;
+
+      environment.systemPackages = with pkgs; [
+        nvtopPackages.amd
+      ];
     };
 }