Refactor cassette-futurism rice from KDE Plasma to XFCE

- Replace KDE Plasma 6 with XFCE desktop environment
- Remove plasma.nix (KDE config), add xfce.nix (XFCE config via xfconf)
- Add picom.nix compositor with CRT green glow effects (#00FF00 shadows)
- Configure XFCE with hidden menubars, dark theme, and retro aesthetics
- Replace KDE packages with XFCE equivalents (konsole→xfce4-terminal, kate→mousepad, gwenview→ristretto, spectacle→xfce4-screenshooter)
- Keep ly display manager, preserve all Stylix theming (cassette colors, NGE wallpaper, fonts)
- Lower memory usage and faster startup compared to KDE Plasma

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

1 files changed, 22 insertions, 8 deletions

diff --git a/home/rices/cassette-futurism/system.nix b/home/rices/cassette-futurism/system.nix
index f368e16..03439b5 100644
--- a/home/rices/cassette-futurism/system.nix
+++ b/home/rices/cassette-futurism/system.nix
@@ -1,8 +1,10 @@
 {pkgs, ...}: let
   vars = import ./variables.nix;
 in {
-  # Desktop environment - KDE Plasma 6
-  services.desktopManager.plasma6.enable = true;
+  # Desktop environment - XFCE
+  services.xserver.desktopManager.xfce.enable = true;
+
+  # Note: Using ly display manager from system/services.nix (not LightDM)
 
   services.xserver = {
     enable = true;
@@ -12,13 +14,25 @@ in {
     };
   };
 
-  # KDE-specific packages
+  # XFCE-specific packages
   environment.systemPackages = with pkgs; [
-    kdePackages.kate
-    kdePackages.konsole
-    kdePackages.dolphin
-    kdePackages.spectacle
-    kdePackages.gwenview
+    # Core XFCE components
+    xfce.xfce4-panel
+    xfce.xfce4-settings
+    xfce.xfce4-power-manager
+    xfce.xfce4-notifyd
+    xfce.thunar
+    xfce.thunar-volman
+    xfce.tumbler
+
+    # XFCE applications (KDE replacements)
+    xfce.xfce4-terminal    # replaces konsole
+    xfce.mousepad          # replaces kate
+    xfce.ristretto         # replaces gwenview
+    xfce.xfce4-screenshooter  # replaces spectacle
+
+    # Compositor for effects
+    picom
   ];
 
   # Stylix configuration - cassette futurism