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-rw-r--r--pkg_resources.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/pkg_resources.py b/pkg_resources.py
index d704aad5..636d6ff9 100644
--- a/pkg_resources.py
+++ b/pkg_resources.py
@@ -710,6 +710,7 @@ class WorkingSet(object):
def __setstate__(self, (entries, keys, by_key, callbacks)):
self.entries = entries[:]
+ self.entry_keys = keys.copy()
self.by_key = by_key.copy()
self.callbacks = callbacks[:]