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require 'pathname'
def ActiveSupport.requirable?(file)
$LOAD_PATH.any? { |p| Dir.glob("#{p}/#{file}.*").any? }
end
[%w(builder 2.1.2), %w(memcache-client 1.7.5), %w(tzinfo 0.3.15)].each do |lib, version|
# If the lib is not already requirable
unless ActiveSupport.requirable? lib
# Try to activate a gem ~> satisfying the requested version first.
begin
gem lib, ">= #{version}"
# Use the vendored lib if the gem's missing or we aren't using RubyGems.
rescue LoadError, NoMethodError
# There could be symlinks
$LOAD_PATH.unshift Pathname.new(__FILE__).dirname.join("vendor/#{lib}-#{version}/lib").realpath.to_s
end
end
end
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