qdjango: Fix tests

Wants sqlite driver.

pkgs/development/libraries/qdjango/default.nix

@@ -5,6 +5,7 @@
   testers,
   doxygen,
   qmake,
+  qtbase,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -55,7 +56,10 @@ stdenv.mkDerivation (finalAttrs: {
 
   doCheck = stdenv.buildPlatform.canExecute stdenv.hostPlatform;
 
-  preCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
+  preCheck = ''
+    export QT_PLUGIN_PATH=${lib.getBin qtbase}/${qtbase.qtPluginPrefix}
+  ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
     # at this point in the build, install_name for dylibs hasn't been patched yet so we need to set the library path.
     # for some reason, this doesn't work when just exporting the needed paths even though the autogenerated wrappers
     # should at most prepend paths? just patch them into the wrappers instead