diff --git a/pkgs/by-name/ge/gepetto-viewer/package.nix b/pkgs/by-name/ge/gepetto-viewer/package.nix
index ed7eb146f06f7..0d5fb0840fc5c 100644
--- a/pkgs/by-name/ge/gepetto-viewer/package.nix
+++ b/pkgs/by-name/ge/gepetto-viewer/package.nix
@@ -16,6 +16,8 @@
   qgv,
   stdenv,
   runCommand,
+
+  withPythonQt ? false,
 }:
 let
   gepetto-viewer = stdenv.mkDerivation (finalAttrs: {
@@ -43,8 +45,10 @@ let
 
     buildInputs = [
       python3Packages.boost
-      python3Packages.python-qt
       libsForQt5.qtbase
+    ]
+    ++ lib.optionals withPythonQt [
+      python3Packages.python-qt
     ];
 
     nativeBuildInputs = [