| A type of package. |
| A module, theme, distro, or other repository hosted on Drupal.org. |
Composer allows you to "require" a set of dependencies that it "installs." Again, in Composer parlance, “install” simply means that the Composer package will be downloaded and correctly loaded (made available to PHP classes) by the Composer autoloader.
To use Composer to "install" a new Drupal project (module, theme, profile, etc.), execute:
composer require drupal/[project-name]Where [project-name] is the machine name of the project (module, theme, distro, etc.) on Drupal.org. You can always find the machine name of a Drupal project on it’s project page on Drupal.org:
For instance, to require token, execute:
composer require drupal/tokenThis will add drupal/token to the require array in your composer.json. It will choose a default version constraint based on your composer.json configuration. E.g., if you have specified "prefer-stable": "true" then this will download the latest stable version of the package.
You may also specify the version constraint by adding second argument:
composer require drupal/token ^1.1.0Make sure to commit the changes to composer.json and composer.lock after requiring the new module. As mentioned above and in How to Structure Your Drupal Repository, the Drupal module files will not be committed to Git. Rather, Composer will read the contents of composer.lock when installing or deploying your site to another environment in order to install the expected packages.
To update drupal/token and require a new version constraint (such as 1.10), execute:
composer require drupal/token:^1.10 --update-with-all-dependencies
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