can_install_in_parallel?()private
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# File lib/bundler/installer.rb, line 277
def can_install_in_parallel?
if Bundler.rubygems.provides?(">= 2.1.0")
true
else
Bundler.ui.warn "RubyGems #{Gem::VERSION} is not threadsafe, so your " "gems will be installed one at a time. Upgrade to RubyGems 2.1.0 " "or higher to enable parallel gem installation."
false
end
end