Add rice-driven desktop environment system

- Created rice-desktop.nix module allowing rices to declare desktop environments
- Supports i3, KDE Plasma, or no desktop environment
- Enables rice-specific stylix overrides and wallpapers
- Moved desktop and stylix configuration from separate modules to unified rice-desktop
- Updated system/default.nix to import rice-desktop instead of desktop.nix and stylix.nix

1 files changed, 193 insertions, 0 deletions

diff --git a/system/rice-desktop.nix b/system/rice-desktop.nix
new file mode 100644
index 0000000..78a63e9
--- /dev/null
+++ b/system/rice-desktop.nix
@@ -0,0 +1,193 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  cfg = config.rice;
+in {
+  options.rice = {
+    desktop = {
+      environment = lib.mkOption {
+        type = lib.types.enum ["i3" "plasma" "none"];
+        default = "i3";
+        description = "Desktop environment to use";
+      };
+
+      wayland.enable = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = "Enable Wayland support";
+      };
+
+      compositor.enable = lib.mkOption {
+        type = lib.types.bool;
+        default = true;
+        description = "Enable picom compositor (for X11 environments)";
+      };
+    };
+
+    stylix = {
+      overrideColors = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = "Override system stylix colors with rice-specific colors";
+      };
+
+      base16Scheme = lib.mkOption {
+        type = lib.types.nullOr lib.types.attrs;
+        default = null;
+        description = "Custom Base16 color scheme";
+      };
+
+      wallpaper = lib.mkOption {
+        type = lib.types.nullOr lib.types.path;
+        default = null;
+        description = "Custom wallpaper path or derivation";
+      };
+
+      fonts = lib.mkOption {
+        type = lib.types.nullOr lib.types.attrs;
+        default = null;
+        description = "Custom font configuration";
+      };
+    };
+  };
+
+  config = lib.mkMerge [
+    # Default stylix configuration (can be overridden by rices)
+    {
+      stylix = {
+        enable = true;
+        autoEnable = true;
+
+        # Default Base16 scheme - Nord Blue inspired
+        base16Scheme = lib.mkDefault {
+          base00 = "2D333F"; # background
+          base01 = "3B4252"; # lighter background
+          base02 = "434C5E"; # selection background
+          base03 = "4C566A"; # comments
+          base04 = "D8DEE9"; # dark foreground
+          base05 = "C6D0F5"; # foreground
+          base06 = "E5E9F0"; # light foreground
+          base07 = "ECEFF4"; # lightest foreground
+          base08 = "BF616A"; # red
+          base09 = "D5A18E"; # orange/tan
+          base0A = "EBCB8B"; # yellow
+          base0B = "A3BE8C"; # green
+          base0C = "88C0D0"; # cyan
+          base0D = "82A3C0"; # blue (accent)
+          base0E = "B48EAD"; # purple
+          base0F = "5E81AC"; # dark blue
+        };
+
+        # Default wallpaper
+        image = lib.mkDefault (pkgs.fetchurl {
+          url = "https://raw.githubusercontent.com/NixOS/nixos-artwork/master/wallpapers/nix-wallpaper-simple-blue.png";
+          sha256 = "sha256-utrcjzfeJoFOpUbFY2eIUNCKy5rjLt57xIoUUssJmdI=";
+        });
+
+        # Default fonts
+        fonts = lib.mkDefault {
+          monospace = {
+            package = pkgs.nerd-fonts.jetbrains-mono;
+            name = "JetBrainsMono Nerd Font";
+          };
+          sansSerif = {
+            package = pkgs.noto-fonts;
+            name = "Noto Sans";
+          };
+          serif = {
+            package = pkgs.noto-fonts;
+            name = "Noto Serif";
+          };
+          emoji = {
+            package = pkgs.noto-fonts-color-emoji;
+            name = "Noto Color Emoji";
+          };
+          sizes = {
+            terminal = 10;
+            applications = 11;
+            desktop = 11;
+          };
+        };
+
+        # Default cursor
+        cursor = lib.mkDefault {
+          package = pkgs.bibata-cursors;
+          name = "Bibata-Modern-Classic";
+          size = 24;
+        };
+
+        # Default opacity
+        opacity = lib.mkDefault {
+          terminal = 0.95;
+          applications = 1.0;
+          desktop = 1.0;
+          popups = 0.95;
+        };
+
+        # Default polarity
+        polarity = lib.mkDefault "dark";
+
+        # Disable nixos-icons to avoid conflict
+        targets.nixos-icons.enable = false;
+      };
+    }
+
+    # Rice-specific stylix overrides
+    (lib.mkIf cfg.stylix.overrideColors {
+      stylix = {
+        base16Scheme = lib.mkIf (cfg.stylix.base16Scheme != null) (lib.mkForce cfg.stylix.base16Scheme);
+        image = lib.mkIf (cfg.stylix.wallpaper != null) (lib.mkForce cfg.stylix.wallpaper);
+        fonts = lib.mkIf (cfg.stylix.fonts != null) (lib.mkForce cfg.stylix.fonts);
+      };
+    })
+
+    # i3 desktop environment
+    (lib.mkIf (cfg.desktop.environment == "i3") {
+      services.xserver = {
+        enable = true;
+        windowManager.i3.enable = true;
+
+        # Czech QWERTZ layout
+        xkb = {
+          layout = "cz";
+          options = "eurosign:e,caps:escape";
+        };
+      };
+
+      # Compositor for X11
+      services.picom.enable = cfg.desktop.compositor.enable;
+    })
+
+    # KDE Plasma desktop environment
+    (lib.mkIf (cfg.desktop.environment == "plasma") {
+      # Enable KDE Plasma 6
+      services.displayManager.sddm = {
+        enable = true;
+        wayland.enable = cfg.desktop.wayland.enable;
+      };
+
+      services.desktopManager.plasma6.enable = true;
+
+      # X11 configuration for Plasma (if not using Wayland)
+      services.xserver = {
+        enable = true;
+        xkb = {
+          layout = "cz";
+          options = "eurosign:e,caps:escape";
+        };
+      };
+
+      # KDE-specific packages
+      environment.systemPackages = with pkgs; [
+        kdePackages.kate
+        kdePackages.konsole
+        kdePackages.dolphin
+        kdePackages.spectacle
+        kdePackages.gwenview
+      ];
+    })
+  ];
+}