feat: restructure system config

Create common system config and derive common server & desktop configs
from it.

home-pc.nix

@@ -6,7 +6,7 @@
     ./hardware/gpu-amd.nix
     ./hardware/steam.nix
     ./hardware/ledger.nix
-    ./system
+    ./system/desktop.nix
     ./system/gaming.nix
     ./desktop
     ./virtualisation/libvirt.nix

rpi4.nix

@@ -12,10 +12,7 @@ in with builtins; {
   imports = [
     # ./hardware/base.nix
     ./hardware/gpu-rpi4.nix
-    # ./system
+    ./system/server.nix
-    ./system/nix.nix
-    ./system/i18n.nix
-    ./system/networking.nix
     ./modules/emailNotify.nix
     ./services/mail.nix
     ./services/restic/rpi4.nix

system/common.nix

@@ -0,0 +1,7 @@
+{ config, pkgs, ... }:
+
+{
+  imports = [ ./i18n.nix ./nix.nix ./networking.nix ./hardened.nix ];
+
+  environment.systemPackages = with pkgs; [ wget curl openssl neovim ];
+}

system/desktop.nix

@@ -0,0 +1,8 @@
+{ config, pkgs, ... }:
+
+{
+  imports = [ ./common.nix ./fonts.nix ./sound.nix ./vpn.nix ];
+
+  services.printing.enable = true;
+  services.fwupd.enable = true;
+}

system/fonts.nix

@@ -1,17 +1,6 @@
 { config, pkgs, ... }:
 
 {
-  imports = [
-    ./hardened.nix
-    ./sound.nix
-    ./i18n.nix
-    ./nix.nix
-    ./networking.nix
-    ./vpn.nix
-  ];
-
-  environment.systemPackages = with pkgs; [ wget curl openssl neovim ];
-
   # TODO once nerdfonts 2.2.0 is released switch to NerdFontsSymbolsOnly
   # Also needs to be added to known fonts in nixpkgs:
   # https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/data/fonts/nerdfonts/shas.nix
@@ -32,7 +21,4 @@
     monospace = [ "Fira Code" "Noto Color Emoji" "FiraCode Nerd Font" ];
     emoji = [ "Noto Color Emoji" "FiraCode Nerd Font" ];
   };
-
-  services.printing.enable = true;
-  services.fwupd.enable = true;
 }

system/server.nix

@@ -0,0 +1,5 @@
+{ config, pkgs, ... }:
+
+{
+  imports = [ ./common.nix ];
+}