Gem::Specification#conflicts

# File tmp/rubies/ruby-3.3.0/lib/rubygems/specification.rb, line 1701
def conflicts
  conflicts = {}
  runtime_dependencies.each do |dep|
    spec = Gem.loaded_specs[dep.name]
    if spec && !spec.satisfies_requirement?(dep)
      (conflicts[spec] ||= []) << dep
    end
  end
  env_req = Gem.env_requirement(name)
  (conflicts[self] ||= []) << env_req unless env_req.satisfied_by? version
  conflicts
end