come faccio ad installare un modulo alpha o RC?

visto che tutto finisce sempre con "but it does not match the constraint." :(

ho provato a cambiare "minimum-stability": "stable", a "minimum-stability": "dev",

ma è come se non facessi niente.

composer require 'drupal/tvi:^2.0@alpha'

./composer.json has been updated
Running composer update drupal/tvi
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires drupal/tvi 2.0@alpha (exact version match), found drupal/tvi[dev-1.x, dev-2.0.x, 1.0.0-alpha1, ..., 1.x-dev (alias of dev-1.x), 2.0.0-alpha1, 2.0.0-alpha2, 2.0.x-dev (alias of dev-2.0.x)] but it does not match the constraint.

Installation failed, reverting ./composer.json and ./composer.lock to their original content.