google-chrome: add plasmaSupport option (#483541)

pkgs/by-name/go/google-chrome/package.nix

@@ -94,8 +94,10 @@
   addDriverRunpath,
   undmg,
 
-  # For QT support
+  # Enables Chrome's "Use QT" appearance to introspect the user's Plasma theme
+  plasmaSupport ? false,
   qt6,
+  kdePackages,
 
   # Create a symlink at $out/bin/google-chrome
   withSymlink ? true,
@@ -167,8 +169,12 @@ let
   ++ [
     gtk3
     gtk4
+  ]
+  ++ lib.optionals plasmaSupport [
     qt6.qtbase
     qt6.qtwayland
+    kdePackages.plasma-integration
+    kdePackages.breeze
   ];
 
   linux = stdenvNoCC.mkDerivation (finalAttrs: {
@@ -249,9 +255,13 @@ let
 
       # "--simulate-outdated-no-au" disables auto updates and browser outdated popup
       makeWrapper "$out/share/google/$appname/google-$appname" "$exe" \
-        --prefix QT_PLUGIN_PATH  : "${qt6.qtbase}/lib/qt-6/plugins" \
-        --prefix QT_PLUGIN_PATH  : "${qt6.qtwayland}/lib/qt-6/plugins" \
-        --prefix NIXPKGS_QT6_QML_IMPORT_PATH : "${qt6.qtwayland}/lib/qt-6/qml" \
+        ${lib.optionalString plasmaSupport ''
+          --prefix QT_PLUGIN_PATH  : "${qt6.qtbase}/lib/qt-6/plugins" \
+          --prefix QT_PLUGIN_PATH  : "${qt6.qtwayland}/lib/qt-6/plugins" \
+          --prefix QT_PLUGIN_PATH  : "${kdePackages.plasma-integration}/lib/qt-6/plugins" \
+          --prefix QT_PLUGIN_PATH  : "${kdePackages.breeze}/lib/qt-6/plugins" \
+          --prefix NIXPKGS_QT6_QML_IMPORT_PATH : "${qt6.qtwayland}/lib/qt-6/qml" \
+        ''} \
         --prefix LD_LIBRARY_PATH : "$rpath" \
         --prefix PATH            : "$binpath" \
         --suffix PATH            : "${lib.makeBinPath [ xdg-utils ]}" \