class Bundler::Definition

def additional_base_requirements_to_prevent_downgrades(resolution_packages, last_resolve)
  return resolution_packages unless @locked_gems && !sources.expired_sources?(@locked_gems.sources)
  converge_specs(@originally_locked_specs - last_resolve).each do |locked_spec|
    next if locked_spec.source.is_a?(Source::Path)
    resolution_packages.base_requirements[locked_spec.name] = Gem::Requirement.new(">= #{locked_spec.version}")
  end
  resolution_packages
end