[desktop] Refactor into multiple components

roles/default.nix

@@ -31,6 +31,12 @@ with lib;
     };
     time.timeZone = "America/Los_Angeles";
 
+    services.xserver.xkb = {
+      layout = "us";
+      variant = "";
+      options = "caps:escape";
+    };
+
     # Don't go to emergency mode if we aren't able to mount filesystems.
     # This is silly if you have multiple hard drives or partitions
     # configured on a machine and then one goes away intentionally or

roles/desktop/default.nix

@@ -4,88 +4,32 @@ with lib;
 
 let
   cfg = config.roles.desktop;
-
-  customPackages = pkgs.callPackage ../../packages {};
-
-  basePackages = with pkgs; [
-    #bambu-studio
-    brightnessctl
-    emacs-nox
-  ];
-
-  x11BasePackages = with pkgs; [
-  ];
-
-  x11OnlyPackages = with pkgs; [
-  ];
-
-  waylandBasePackages = with pkgs; [
-    grim
-    slurp
-    wl-clipboard
-    mako
-  ];
-
-  waylandOnlyPackages = with pkgs; [
-  ];
 in
 {
   options.roles.desktop = {
-    enable = mkEnableOption "Enable the desktop role";
-    x11Only = mkOption {
-      type = types.bool;
-      default = false;
-    };
-    waylandOnly = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkEnableOption "Enable the desktop role.";
+    x11 = mkOption { type = types.bool; default = false; description = "Enable X11 support."; };
+    wayland = mkOption { type = types.bool; default = false; description = "Enable Wayland support."; };
+    kde = mkOption { type = types.bool; default = false; description = "Enable KDE."; };
+    gaming = mkOption { type = types.bool; default = false; description = "Enable gaming support."; };
+    sddm = mkOption { type = types.bool; default = false; description = "Enable SDDM greeter."; };
   };
 
-  config = mkIf cfg.enable
-    {
-      services.xserver.xkb = {
-        layout = "us";
-        variant = "";
-        options = "caps:escape";
-      };
-      services.xserver.enable = true;
+  imports = [
+    ./x11.nix
+    ./wayland.nix
+    ./gaming.nix
+    ./kde.nix
+  ];
 
-      services.displayManager.sddm = {
-        enable = true;
-        wayland.enable = !cfg.x11Only;
-      };
-      services.desktopManager.plasma6.enable = true;
-
-      services.xserver.windowManager.i3 = {
-        enable = true;
-        extraPackages = with pkgs; [
-          dmenu
-          i3status
-          i3lock
-        ];
-      };
-      programs.dconf.enable = true;
-      services.gnome.gnome-keyring.enable = true;
-
-      programs.sway = mkIf (!cfg.x11Only) {
-        enable = true;
-        wrapperFeatures.gtk = true;
-      };
-      programs.light.enable = mkIf (!cfg.x11Only) true;
-
-      programs.kdeconnect.enable = true;
-
-      virtualisation.docker.enable = true;
-      users.extraGroups.docker.members = [ "johno" ];
-
-      environment.systemPackages = with pkgs; mkMerge [
-        basePackages
-        (mkIf (!cfg.waylandOnly) x11BasePackages)
-        (mkIf cfg.x11Only x11OnlyPackages)
-        (mkIf (!cfg.x11Only) waylandBasePackages)
-        (mkIf (cfg.waylandOnly) waylandOnlyPackages)
-      ];
-    };
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      brightnessctl
+      emacs-nox
+    ];
 
+    programs.dconf.enable = true;
+    services.gnome.gnome-keyring.enable = true;
+    programs.kdeconnect.enable = true;
+  };
 }

roles/desktop/gaming.nix

@@ -0,0 +1,17 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.roles.desktop;
+in
+{
+  config = mkIf (cfg.enable && cfg.gaming) {
+    environment.systemPackages = with pkgs; [
+      steam
+      lutris
+    ];
+
+    # Possibly other gaming specific services or settings
+  };
+}

roles/desktop/kde.nix

@@ -0,0 +1,12 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.roles.desktop;
+in
+{
+  config = mkIf (cfg.enable && cfg.kde) {
+    services.desktopManager.plasma6.enable = true;
+  };
+}

roles/desktop/programs.nix

@@ -0,0 +1,16 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+
+{
+  config = {
+    environment.systemPackages = with pkgs; [
+      brightnessctl
+      emacs-nox
+    ];
+
+    programs.dconf.enable = true;
+    services.gnome.gnome-keyring.enable = true;
+    programs.kdeconnect.enable = true;
+  };
+}

roles/desktop/sddm.nix

@@ -0,0 +1,15 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.roles.desktop;
+in
+{
+  config = mkIf (cfg.enable && cfg.sddm) {
+    services.displayManager.sddm = {
+      enable = true;
+      wayland.enable = (!cfg.x11 && cfg.wayland);
+    };
+  };
+}

roles/desktop/wayland.nix

@@ -0,0 +1,23 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.roles.desktop;
+in
+{
+  config = mkIf (cfg.enable && cfg.wayland) {
+    programs.sway = {
+      enable = true;
+      wrapperFeatures.gtk = true;
+    };
+    programs.light.enable = true;
+
+    environment.systemPackages = with pkgs; [
+      grim
+      slurp
+      wl-clipboard
+      mako
+    ];
+  };
+}

roles/desktop/x11.nix

@@ -0,0 +1,19 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.roles.desktop;
+in
+{
+  config = mkIf (cfg.enable && cfg.x11) {
+    services.xserver = {
+      enable = true;
+
+      windowManager.i3 = {
+        enable = true;
+        extraPackages = with pkgs; [ dmenu i3status i3lock ];
+      };
+    };
+  };
+}

roles/virtualisation/default.nix

@@ -14,5 +14,7 @@ in
     {
       virtualisation.libvirtd.enable = true;
       programs.virt-manager.enable = true;
+      virtualisation.docker.enable = true;
+      users.extraGroups.docker.members = [ "johno" ];
     };
 }