Change record status: 
Project: 
Introduced in branch: 
11.1.x, 11.x
Introduced in version: 
11.1.0-beta1
Description: 

The Package Manager extension is available for testing only.

To install the extension, testing_package_manager must be set to TRUE in the site settings.php file.

To install:
$settings['testing_package_manager'] = TRUE;

Impacts: 
Module developers