Add gnome theme for qt6

nixos/modules/config/qt5.nix

@@ -12,7 +12,13 @@ let
   isLxqt = cfg.platformTheme == "lxqt";
   isKde = cfg.platformTheme == "kde";
 
-  packages = if isQGnome then [ pkgs.qgnomeplatform pkgs.adwaita-qt ]
+  packages =
+    if isQGnome then [
+      pkgs.qgnomeplatform
+      pkgs.adwaita-qt
+      pkgs.qgnomeplatform-qt6
+      pkgs.adwaita-qt6
+    ]
     else if isQtStyle then [ pkgs.libsForQt5.qtstyleplugins ]
     else if isQt5ct then [ pkgs.libsForQt5.qt5ct ]
     else if isLxqt then [ pkgs.lxqt.lxqt-qtplugin pkgs.lxqt.lxqt-config ]
@@ -40,6 +46,7 @@ in
         example = "gnome";
         relatedPackages = [
           "qgnomeplatform"
+          "qgnomeplatform-qt6"
           ["libsForQt5" "qtstyleplugins"]
           ["libsForQt5" "qt5ct"]
           ["lxqt" "lxqt-qtplugin"]
@@ -71,6 +78,7 @@ in
         example = "adwaita";
         relatedPackages = [
           "adwaita-qt"
+          "adwaita-qt6"
           ["libsForQt5" "qtstyleplugins"]
         ];
         description = lib.mdDoc ''

pkgs/data/themes/adwaita-qt/default.nix

@@ -1,16 +1,17 @@
-{ mkDerivation
-, stdenv
+{ stdenv
 , lib
 , fetchFromGitHub
 , nix-update-script
 , cmake
 , ninja
 , qtbase
+, qtwayland
 , qt5
 , xorg
+, useQt6 ? false
 }:
 
-mkDerivation rec {
+stdenv.mkDerivation rec {
   pname = "adwaita-qt";
   version = "1.4.1";
 
@@ -30,9 +31,19 @@ mkDerivation rec {
 
   buildInputs = [
     qtbase
-    qt5.qtx11extras
   ] ++ lib.optionals stdenv.isLinux [
     xorg.libxcb
+  ] ++ lib.optionals (!useQt6) [
+    qt5.qtx11extras
+  ] ++ lib.optionals useQt6 [
+    qtwayland
+  ];
+
+  # Qt setup hook complains about missing `wrapQtAppsHook` otherwise.
+  dontWrapQtApps = true;
+
+  cmakeFlags = lib.optionals useQt6 [
+    "-DUSE_QT6=true"
   ];
 
   postPatch = ''

pkgs/development/libraries/qgnomeplatform/default.nix

@@ -1,19 +1,22 @@
-{ mkDerivation
+{ stdenv
 , lib
 , fetchFromGitHub
 , nix-update-script
 , cmake
 , pkg-config
 , adwaita-qt
+, adwaita-qt6
 , glib
 , gtk3
 , qtbase
+, qtwayland
 , pantheon
 , substituteAll
 , gsettings-desktop-schemas
+, useQt6 ? false
 }:
 
-mkDerivation rec {
+stdenv.mkDerivation rec {
   pname = "qgnomeplatform";
   version = "0.8.4";
 
@@ -38,15 +41,24 @@ mkDerivation rec {
   ];
 
   buildInputs = [
-    adwaita-qt
     glib
     gtk3
     qtbase
+  ] ++ lib.optionals (!useQt6) [
+    adwaita-qt
+  ] ++ lib.optionals useQt6 [
+    adwaita-qt6
+    qtwayland
   ];
 
+  # Qt setup hook complains about missing `wrapQtAppsHook` otherwise.
+  dontWrapQtApps = true;
+
   cmakeFlags = [
     "-DGLIB_SCHEMAS_DIR=${glib.getSchemaPath gsettings-desktop-schemas}"
     "-DQT_PLUGINS_DIR=${placeholder "out"}/${qtbase.qtPluginPrefix}"
+  ] ++ lib.optionals useQt6 [
+    "-DUSE_QT6=true"
   ];
 
   passthru = {

pkgs/top-level/all-packages.nix

@@ -22554,6 +22554,10 @@ with pkgs;
 
   qgnomeplatform = libsForQt5.callPackage ../development/libraries/qgnomeplatform { };
 
+  qgnomeplatform-qt6 = qt6Packages.callPackage ../development/libraries/qgnomeplatform {
+    useQt6 = true;
+  };
+
   randomx = darwin.apple_sdk_11_0.callPackage ../development/libraries/randomx { };
 
   remodel = callPackage ../development/tools/remodel {
@@ -26425,6 +26429,10 @@ with pkgs;
 
   adwaita-qt = libsForQt5.callPackage ../data/themes/adwaita-qt { };
 
+  adwaita-qt6 = qt6Packages.callPackage ../data/themes/adwaita-qt {
+    useQt6 = true;
+  };
+
   adw-gtk3 = callPackage ../data/themes/adw-gtk3 { };
 
   agave = callPackage ../data/fonts/agave { };