feat: Compile Plasma Bigscreen against the development repo as of February 13, 2026

hw/nix-zima.nix

@@ -66,6 +66,6 @@ in
 
     # ========== Software Profile ==========
     athenix.sw.enable = lib.mkDefault true;
-    athenix.sw.desktop.enable = lib.mkDefault true;
+    athenix.sw.bigscreen.enable = lib.mkDefault true;
   };
 }

pkgs/default.nix

@@ -0,0 +1,24 @@
+{ pkgs, ... }:
+{
+  plasma-bigscreen = pkgs.callPackage ./plasma-bigscreen.nix {
+    inherit (pkgs.kdePackages)
+      kcmutils
+      kdeclarative
+      ki18n
+      kio
+      knotifications
+      kwayland
+      kwindowsystem
+      mkKdeDerivation
+      qtmultimedia
+      plasma-workspace
+      bluez-qt
+      qtwebengine
+      plasma-nano
+      plasma-nm
+      milou
+      kscreen
+      kdeconnect-kde
+      ;
+  };
+}

pkgs/plasma-bigscreen.nix

@@ -0,0 +1,112 @@
+# NOTE: from https://github.com/NixOS/nixpkgs/pull/428353#issuecomment-3498917203
+# more info in tv.nix nixos config
+{
+  mkKdeDerivation,
+  lib,
+  fetchFromGitLab,
+  pkg-config,
+  ki18n,
+  kdeclarative,
+  kcmutils,
+  knotifications,
+  kio,
+  kwayland,
+  kwindowsystem,
+  plasma-workspace,
+  qtmultimedia,
+  bluez-qt,
+  qtwebengine,
+  plasma-nano,
+  plasma-nm,
+  milou,
+  kscreen,
+  kdeconnect-kde,
+  sdl3,
+  libcec ? null
+}:
+mkKdeDerivation {
+  pname = "plasma-bigscreen";
+  version = "unstable-2026-02-13";
+
+  src = fetchFromGitLab {
+    domain = "invent.kde.org";
+    owner = "plasma";
+    repo = "plasma-bigscreen";
+    rev = "1db19cdfc2ac1653cb129f403702addec2caf4c7";
+    hash = "sha256-dfsR20dY1jtLmEpGRxvp9xwOHJFn3mVw+1RUGBJRLpQ=";
+  };
+
+  extraNativeBuildInputs = [
+    pkg-config
+  ];
+
+  buildInputs = [
+    ki18n
+    kdeclarative
+    kcmutils
+    knotifications
+    kio
+    kwayland
+    kwindowsystem
+    plasma-workspace
+    qtmultimedia
+    bluez-qt
+    qtwebengine
+    plasma-nano
+    plasma-nm
+    milou
+    kscreen
+    kdeconnect-kde
+    sdl3
+  ] ++ lib.optionals (libcec != null) [ libcec ];
+
+  postPatch = ''
+        substituteInPlace bin/plasma-bigscreen-wayland.in \
+          --replace-fail @KDE_INSTALL_FULL_LIBEXECDIR@ "${plasma-workspace}/libexec"
+
+        # Plasma version numbers are required to match, but we are building an
+        # unreleased package against a stable Plasma release.
+        substituteInPlace CMakeLists.txt \
+          --replace-fail 'set(PROJECT_VERSION "6.5.80")' 'set(PROJECT_VERSION "${plasma-workspace.version}")'
+
+        # Fix for Qt 6.10+ which requires explicit find_package of private targets
+        # Reference: https://github.com/NixOS/nixpkgs/pull/461599/changes
+        substituteInPlace CMakeLists.txt \
+          --replace-fail \
+          'find_package(Qt6 ''${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS
+        Quick
+        Core
+        Qml
+        DBus
+        Network
+        Multimedia
+        WebEngineCore
+        WebEngineQuick
+        WaylandClient
+    )' \
+          'find_package(Qt6 ''${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS
+        Quick
+        Core
+        Qml
+        QmlPrivate
+        DBus
+        Network
+        Multimedia
+        WebEngineCore
+        WebEngineQuick
+        WaylandClient
+    )'
+  '';
+
+  preFixup = ''
+    wrapQtApp $out/bin/plasma-bigscreen-wayland
+  '';
+
+  passthru.providedSessions = [
+    "plasma-bigscreen-wayland"
+  ];
+
+  meta = {
+    license = lib.licenses.gpl2Plus;
+  };
+}

sw/bigscreen/default.nix

@@ -0,0 +1,63 @@
+# ============================================================================
+# Bigscreen Software Configuration
+# ============================================================================
+# Imports desktop-specific programs and services (KDE Plasma, CUPS, etc.)
+
+{
+  config,
+  lib,
+  pkgs,
+  inputs,
+  ...
+}:
+
+with lib;
+
+let
+  cfg = config.athenix.sw.bigscreen;
+in
+{
+  options.athenix.sw.bigscreen = mkOption {
+    type = lib.types.submodule {
+      options = {
+        enable = mkOption {
+          type = lib.types.bool;
+          default = false;
+          description = ''
+            Enable full desktop environment with KDE Plasma 6 Bigscreen.
+
+            Includes:
+            - KDE Plasma 6 desktop with SDDM display manager
+            - Printing and scanning support (CUPS)
+            - Virtualization (libvirt, virt-manager)
+            - Bluetooth and audio (PipeWire)
+
+            Recommended for: home theater PCs, media centers, and large-screen desktops.
+          '';
+          example = true;
+        };
+      };
+    };
+    default = { };
+    description = "Desktop environment configuration (KDE Plasma 6).";
+  };
+
+  config = mkIf cfg.enable (mkMerge [
+    (import ./programs.nix {
+      inherit
+        config
+        lib
+        pkgs
+        inputs
+        ;
+    })
+    (import ./services.nix {
+      inherit
+        config
+        lib
+        pkgs
+        inputs
+        ;
+    })
+  ]);
+}

sw/bigscreen/programs.nix

@@ -0,0 +1,31 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+with lib;
+
+let
+  cfg = config.athenix.sw;
+  basePackages = with pkgs; [
+    tmux
+    man
+    (chromium.override {
+      commandLineArgs = [ "--enable-features=TouchpadOverscrollHistoryNavigation" ];
+    })
+    lm_sensors
+  ];
+in
+{
+  environment.systemPackages = subtractLists cfg.excludePackages (basePackages ++ cfg.extraPackages);
+
+  programs.mtr.enable = true;
+  programs.gnupg.agent = {
+    enable = true;
+    enableSSHSupport = true;
+  };
+
+  programs.virt-manager.enable = true;
+}

sw/bigscreen/services.nix

@@ -0,0 +1,74 @@
+{
+  lib,
+  pkgs,
+  ...
+}:
+
+let   
+  xelpkgs = pkgs: import ../../pkgs pkgs;
+  bigscreenpkgs = xelpkgs pkgs;
+in  
+
+{
+  athenix.sw.python.enable = lib.mkDefault true;
+
+  services.displayManager.sddm = {
+    enable = true;
+    theme = "breeze";
+    wayland.enable = true;
+    enableHidpi = true;
+    settings = {
+      Autologin = {
+        Session = "plasma-bigscreen-wayland";
+        User = "engr-ugaif";
+      };
+    };
+  };
+  services.desktopManager.plasma6.enable = true;
+  services.displayManager.sessionPackages = with bigscreenpkgs; [
+    plasma-bigscreen
+  ];
+
+  services.printing.enable = true;
+
+  networking.networkmanager.enable = true;
+
+  services.pulseaudio.enable = false;
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+  };
+
+  fonts.packages = with pkgs; [
+    nerd-fonts.fira-code
+    corefonts
+    noto-fonts
+  ];
+  fonts.fontconfig = {
+    enable = true;
+    defaultFonts.monospace = [ "FiraCode Nerd Font Mono" ];
+  };
+
+  hardware.bluetooth.enable = true;
+  services.blueman.enable = true;
+
+  networking.firewall.enable = true;
+
+  services.flatpak.enable = true;
+  xdg.portal.enable = true;
+  xdg.portal.extraPortals = [ pkgs.kdePackages.xdg-desktop-portal-kde ];
+
+  virtualisation.libvirtd.enable = true;
+
+  services.thermald.enable = true;
+
+  services.fwupd.enable = true;
+
+  services.openssh = {
+    enable = true;
+    settings.PermitRootLogin = "no";
+  };
+}

sw/default.nix

@@ -32,6 +32,7 @@ in
     ./builders
     ./tablet-kiosk
     ./stateless-kiosk
+    ./bigscreen
     inputs.home-manager.nixosModules.home-manager
     inputs.agenix.nixosModules.default
     inputs.disko.nixosModules.disko