<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def require_prebuilt_dist(func):
 """Decorator for ToolchainCL methods. If present, the method will automatically make sure a dist has been built before continuing or, if no dists are present or can be obtained, will raise an error. """


    @wraps(func)
    def wrapper_func(self, args):
        ctx = self.ctx
        ctx.set_archs(self._archs)
        ctx.prepare_build_environment(user_sdk_dir=self.sdk_dir,
                                      user_ndk_dir=self.ndk_dir,
                                      user_android_api=self.android_api,
                                      user_ndk_api=self.ndk_api)
        dist = self._dist
        if dist.needs_build:
            if dist.folder_exists():  # possible if the dist is being replaced
                dist.delete()
            info_notify('No dist exists that meets your requirements, '
                        'so one will be built.')
            build_dist_from_args(ctx, dist, args)
        func(self, args)
    return wrapper_func