reset

# File lib/rubygems/specification.rb, line 636
  def self.reset
    @@dirs = nil
    # from = caller.first(10).reject { |s| s =~ /minitest/ }
    # warn ""
    # warn "NOTE: Specification.reset from #{from.inspect}"
    Gem.pre_reset_hooks.each  { |hook| hook.call }
    @@all = nil
    Gem.post_reset_hooks.each { |hook| hook.call }
  end