correct theming

modules/_home/apps.nix

@@ -1,5 +1,6 @@
 { pkgs, ... }: {
   home.packages = with pkgs; [
+    # File manager + KDE ecosystem
     kdePackages.dolphin
     kdePackages.qtwayland
     kdePackages.kio
@@ -9,9 +10,14 @@
     kdePackages.ffmpegthumbs
     kdePackages.kded
     kdePackages.systemsettings
+    kdePackages.ksshaskpass
     ffmpegthumbnailer
+
+    # Desktop utilities
+    qalculate-gtk
   ];
 
+  # Use KDE file chooser portal for Dolphin integration
   xdg.configFile."xdg-desktop-portal/niri-portals.conf".text = ''
     [preferred]
     default=gnome;

modules/_home/niri.nix

@@ -34,6 +34,14 @@ in {
   };
 
   home.packages = with pkgs; [
+    # Niri session tools
+    fuzzel
+    swaylock
+    swww
+    rofimoji
+    libnotify
+
+    # Screenshot stack
     grim
     slurp
     satty

modules/_home/theme.nix

@@ -1,16 +1,14 @@
-{ pkgs, lib, ... }: {
+{ pkgs, ... }: {
   home.packages = with pkgs; [
-    gruvterial-theme
+    gruvbox-gtk-theme
     gruvbox-plus-icons
-    libsForQt5.qt5ct
-    kdePackages.qt6ct
   ];
 
   gtk = {
     enable = true;
     theme = {
-      name = "Gruvterial-Dark";
-      package = pkgs.gruvterial-theme;
+      name = "Gruvbox-Dark";
+      package = pkgs.gruvbox-gtk-theme;
     };
     iconTheme = {
       name = "Gruvbox-Plus-Dark";
@@ -20,47 +18,84 @@
 
   qt = {
     enable = true;
-    platformTheme.name = "qtct";
-    style = {
-      name = "kvantum";
-      package = pkgs.kdePackages.qtstyleplugin-kvantum;
-    };
+    # KDE platform theme: reads kdeglobals for colors, handles KDE app integration.
+    # qtct has a known bug where qt6ct can't access Kvantum, making it wrong for Dolphin.
+    platformTheme.name = "kde";
+    # QT_STYLE_OVERRIDE=kvantum is set automatically by home-manager.
+    # Uses qt6Packages.qtstyleplugin-kvantum + libsForQt5.qtstyleplugin-kvantum.
+    style.name = "kvantum";
   };
 
-  xdg.configFile."kvantum/kvantum.kvconfig".text = ''
+  # Kvantum themes must live in ~/.config/Kvantum/ (capital K, capital V).
+  # The nix user-environment strips share/Kvantum from the profile merge, so the
+  # package alone is not enough — the theme directory must be linked explicitly.
+  xdg.configFile."Kvantum/Gruvbox-Dark-Brown".source =
+    "${pkgs.gruvbox-kvantum}/share/Kvantum/Gruvbox-Dark-Brown";
+
+  xdg.configFile."Kvantum/kvantum.kvconfig".text = ''
     [General]
-    theme=KvDark
+    theme=Gruvbox-Dark-Brown
   '';
 
-  xdg.configFile."qt5ct/qt5ct.conf".text = ''
-    [Appearance]
-    style=kvantum
-    icon_theme=Gruvbox-Plus-Dark
-    standard_dialogs=default
-    custom_palette=false
+  # KDE color scheme aligned to gruvbox-gtk-theme's Gruvbox Dark palette so
+  # Dolphin and other KDE apps share the same background and accent colors as
+  # GTK apps like qalculate-gtk.
+  xdg.configFile."kdeglobals".text = ''
+    [Colors:Window]
+    BackgroundNormal=#282828
+    BackgroundAlternate=#32302f
+    ForegroundNormal=#ebdbb2
+    ForegroundInactive=#a89984
+    ForegroundActive=#ebdbb2
+    DecorationHover=#7daea3
+    DecorationFocus=#7daea3
 
-    [Interface]
-    menus_have_icons=true
-    buttons_have_icons=true
-    toolbutton_style=4
-    activate_item_on_single_click=1
-    underline_shortcut=1
+    [Colors:Button]
+    BackgroundNormal=#3c3836
+    BackgroundAlternate=#32302f
+    ForegroundNormal=#ebdbb2
+    ForegroundInactive=#a89984
+    DecorationHover=#7daea3
+    DecorationFocus=#7daea3
+
+    [Colors:View]
+    BackgroundNormal=#1d2021
+    BackgroundAlternate=#282828
+    ForegroundNormal=#ebdbb2
+    ForegroundInactive=#a89984
+    ForegroundActive=#7daea3
+    ForegroundLink=#83a598
+    ForegroundVisited=#b16286
+    DecorationHover=#7daea3
+    DecorationFocus=#7daea3
+
+    [Colors:Selection]
+    BackgroundNormal=#7daea3
+    BackgroundAlternate=#689d6a
+    ForegroundNormal=#1d2021
+    ForegroundInactive=#1d2021
+
+    [Colors:Tooltip]
+    BackgroundNormal=#32302f
+    ForegroundNormal=#fbf1c7
+
+    [Colors:Complementary]
+    BackgroundNormal=#1d2021
+    ForegroundNormal=#ebdbb2
+
+    [Icons]
+    Theme=Gruvbox-Plus-Dark
+
+    [General]
+    ColorScheme=GruvboxDark
+    Name=Gruvbox Dark
+
+    [KDE]
+    contrast=5
   '';
 
-  xdg.configFile."qt6ct/qt6ct.conf".text = ''
-    [Appearance]
-    style=kvantum
-    icon_theme=Gruvbox-Plus-Dark
-    standard_dialogs=default
-    custom_palette=false
-
-    [Interface]
-    menus_have_icons=true
-    buttons_have_icons=true
-    toolbutton_style=4
-    activate_item_on_single_click=1
-    underline_shortcut=1
-  '';
-
-  home.sessionVariables.QT_QPA_PLATFORMTHEME = lib.mkForce "qt6ct";
+  home.sessionVariables = {
+    SSH_ASKPASS = "${pkgs.kdePackages.ksshaskpass}/bin/ksshaskpass";
+    SSH_ASKPASS_REQUIRE = "prefer";
+  };
 }

modules/den.nix

@@ -104,7 +104,7 @@ in {
         ./_home/niri.nix
         ./_home/cursor.nix
         ./_home/git.nix
-        ./_home/dolphin.nix
+        ./_home/apps.nix
         ./_home/theme.nix
         ./_home/xdg-dirs.nix
       ];

modules/niri.nix

@@ -13,19 +13,9 @@
 
     environment.systemPackages = with pkgs; [
       quickshell-niri
-      fuzzel
-      swaylock
-      swayidle
-      swww
-      grim
-      slurp
-      wl-clipboard
       xdg-desktop-portal-gnome
       xwayland-satellite
       gpu-screen-recorder-gtk
-      libnotify
-      qalculate-gtk
-      rofimoji
     ];
  
     xdg.portal = {