diff --git a/flake.nix b/flake.nix
index 78096a5..da2be9f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -72,6 +72,18 @@
         propagatedBuildInputs = with pkgs.python3Packages; [ numpy pyqt6 ];
       };
 
+      qtextras = pkgs.python3Packages.buildPythonPackage rec {
+        pname = "qtextras";
+        version = "0.6.8";
+        format = "pyproject";
+        src = pkgs.fetchPypi {
+          inherit pname version;
+          hash = "sha256-d1ZotSlOI4surUy0H0N4xHoq94IRQvMHunwRH1uubFg=";
+        };
+        buildInputs = [ pkgs.python3Packages.hatchling ];
+        propagatedBuildInputs = with pkgs.python3Packages; [ numpy pyqtgraph ruamel-yaml ];
+      };
+
       pglive = pkgs.python3Packages.buildPythonPackage rec {
         pname = "pglive";
         version = "0.7.2";
@@ -91,7 +103,7 @@
         src = "${self}/pytec";
 
         nativeBuildInputs = [ pkgs.qt6.wrapQtAppsHook ];
-        propagatedBuildInputs = [ pkgs.qt6.qtbase ] ++ (with pkgs.python3Packages; [ pyqtgraph pyqt6 qasync pglive ]);
+        propagatedBuildInputs = [ pkgs.qt6.qtbase ] ++ (with pkgs.python3Packages; [ pyqtgraph pyqt6 qasync pglive qtextras ]);
 
         dontWrapQtApps = true;
         postFixup = ''
@@ -117,7 +129,7 @@
         buildInputs = with pkgs; [
           rust openocd dfu-util
           ] ++ (with python3Packages; [
-            numpy matplotlib pyqtgraph setuptools pyqt6 qasync pglive
+            numpy matplotlib pyqtgraph setuptools pyqt6 qasync pglive qtextras
           ]);
       };
       defaultPackage.x86_64-linux = thermostat;