def generate_vagrant_set
      sets = [generate_builtin_set, generate_plugin_set]
      if env_plugin_gem_path && env_plugin_gem_path.exist?
        sets << generate_plugin_set(env_plugin_gem_path)
      end
      Gem::Resolver.compose_sets(*sets)
    end
def generate_vagrant_set
      sets = [generate_builtin_set, generate_plugin_set]
      if env_plugin_gem_path && env_plugin_gem_path.exist?
        sets << generate_plugin_set(env_plugin_gem_path)
      end
      Gem::Resolver.compose_sets(*sets)
    end
Generate the composite resolver set totally all of vagrant (builtin + plugin set)