How to run `drush make` on the existing Drupal installation? Whenever I try to run this command for a second time I get an error.

drush -v make /home/testdev/xipdrupalbasic.make /home/testdev/drupal



Loading release_info engine.                                            [notice]
Base path /home/testdev/drupal already exists                           [error]
Command dispatch complete



I get why it gives me this error, but I would like a way of giving a force or overwrite command with it so it still runs. I get the error because it tries to make a directory that already exist.

I already tried  the adding -r to it but it will then just install it in the directory you execute the command.

When i just do:

drush -v make /home/testdev/xipdrupalbasic.make


in the directory where I want it, it will work without a problem.
You can run drush make again on the existing Drupal installation, but you've to specify --no-core parameter.


  drush make --no-core                      Build an installation profile within an existing Drupal site