From b852195a2cf04ef2a6afd0b362e6d20862a7938f Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 11 Mar 2021 19:31:15 +0530
Subject: [PATCH] Clear new VL cache when changing the set of virtual libraries

---
 src/calibre/db/cache.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/db/cache.py b/src/calibre/db/cache.py
index f14c309eed..a49b86af16 100644
--- a/src/calibre/db/cache.py
+++ b/src/calibre/db/cache.py
@@ -657,7 +657,7 @@ class Cache(object):
             self.backend.prefs.set_namespaced(namespace, name, val)
             return
         self.backend.prefs.set(name, val)
-        if name == 'grouped_search_terms':
+        if name in ('grouped_search_terms', 'virtual_libraries'):
             self._clear_search_caches()
         if name in dynamic_category_preferences:
             self._initialize_dynamic_categories()