diff --git a/pkgs/development/libraries/qt-6/modules/qttools/default.nix b/pkgs/development/libraries/qt-6/modules/qttools/default.nix
index da5c50482588d..a2b9a36da4ee8 100644
--- a/pkgs/development/libraries/qt-6/modules/qttools/default.nix
+++ b/pkgs/development/libraries/qt-6/modules/qttools/default.nix
@@ -1,4 +1,5 @@
 {
+  pkgsBuildBuild,
   qtModule,
   stdenv,
   lib,
@@ -20,6 +21,10 @@ qtModule {
     qtbase
     qtdeclarative
   ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ cups ];
+  cmakeFlags = lib.optionals (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
+    "-DQt6LinguistTools_DIR=${pkgsBuildBuild.qt6.qttools}/lib/cmake/Qt6LinguistTools"
+    "-DQt6ToolsTools_DIR=${pkgsBuildBuild.qt6.qttools}/lib/cmake/Qt6ToolsTools"
+  ];
   patches = [
     ./paths.patch
   ];
diff --git a/pkgs/development/libraries/qt-6/modules/qtwayland.nix b/pkgs/development/libraries/qt-6/modules/qtwayland.nix
index 791612abe8abe..ad5fdd6dfea93 100644
--- a/pkgs/development/libraries/qt-6/modules/qtwayland.nix
+++ b/pkgs/development/libraries/qt-6/modules/qtwayland.nix
@@ -1,4 +1,6 @@
 {
+  pkgsBuildBuild,
+  stdenv,
   lib,
   qtModule,
   qtbase,
@@ -38,6 +40,10 @@ qtModule {
   buildInputs = [ libdrm ];
   nativeBuildInputs = [ pkg-config ];
 
+  cmakeFlags = lib.optionals (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
+    "-DQt6WaylandScannerTools_DIR=${pkgsBuildBuild.qt6.qtwayland}/lib/cmake/Qt6WaylandScannerTools"
+  ];
+
   meta = {
     platforms = lib.platforms.unix;
     badPlatforms = lib.platforms.darwin;