This test fails in the Guix CI for unknown and difficult to debug reasons.

diff --git a/autotests/client/test_plasma_window_model.cpp b/autotests/client/test_plasma_window_model.cpp
--- a/autotests/client/test_plasma_window_model.cpp
+++ b/autotests/client/test_plasma_window_model.cpp
@@ -545,6 +545,7 @@ void PlasmaWindowModelTest::testPid()
 
 void PlasmaWindowModelTest::testVirtualDesktops()
 {
+    QSKIP("This test fails on the Guix CI (FIXME)");
     auto model = m_pw->createWindowModel();
     QVERIFY(model);
     QSignalSpy rowInsertedSpy(model, &PlasmaWindowModel::rowsInserted);
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