class Bundler::Molinillo::Resolver::Resolution

def attempt_to_activate_existing_spec(existing_node)
  existing_spec = existing_node.payload
  if requirement_satisfied_by?(requirement, activated, existing_spec)
    new_requirements = requirements.dup
    push_state_for_requirements(new_requirements)
  else
    return if attempt_to_swap_possibility
    create_conflict
    debug(depth) { "Unsatisfied by existing spec (#{existing_node.payload})" }
    unwind_for_conflict
  end
end