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-rw-r--r--lib/rubygems/defaults.rb5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/rubygems/defaults.rb b/lib/rubygems/defaults.rb
index 7eba0cb049..c894bf41be 100644
--- a/lib/rubygems/defaults.rb
+++ b/lib/rubygems/defaults.rb
@@ -1,5 +1,10 @@
module Gem
+ @post_install_hooks ||= []
+ @post_uninstall_hooks ||= []
+ @pre_uninstall_hooks ||= []
+ @pre_install_hooks ||= []
+
##
# An Array of the default sources that come with RubyGems