fix: ksnip crash

hosts/m3-kratos/home.nix

@@ -4,7 +4,6 @@
 # m3ta-home via the profile mapping in hosts/common/users/m3tam3re.nix.
 {
   config,
-  inputs,
   lib,
   ...
 }:
@@ -15,6 +14,8 @@ with lib; {
   config = mkMerge [
     # ── XDG / MIME defaults ──
     {
+      qt.platformTheme.name = mkForce "qtct";
+
       xdg = {
         enable = true;
         configFile."mimeapps.list".force = true;
@@ -58,6 +59,22 @@ with lib; {
             "6, monitor:DP-2"
             "7, monitor:DP-2"
           ];
+          # m3ta-home sets QT_QPA_PLATFORMTHEME=gtk3 globally for Hyprland.
+          # ksnip crashes with duplicate GDK type registration under that Qt GTK
+          # platform theme, so use qtct for Qt apps on this host instead.
+          env = mkForce [
+            "XCURSOR_SIZE,32"
+            "HYPRCURSOR_THEME,Bibata-Modern-Ice"
+            "WLR_NO_HARDWARE_CURSORS,1"
+            "XDG_CURRENT_DESKTOP,Hyprland"
+            "XDG_SESSION_TYPE,wayland"
+            "XDG_SESSION_DESKTOP,Hyprland"
+            "XKB_DEFAULT_LAYOUT,de"
+            "NIXOS_OZONE_WL,1"
+            "QT_QPA_PLATFORM,wayland;xcb"
+            "QT_QPA_PLATFORMTHEME,qt5ct"
+            "QT_QPA_PLATFORMTHEME_QT6,qt6ct"
+          ];
           windowrule = [
             "match:class dev.zed.Zed, workspace 1"
             "match:class ^(com.obsproject.Studio)$, workspace 2"