Change record status: 
Project: 
Introduced in branch: 
9.0.x
Introduced in version: 
9.0.0
Description: 

The easyrdf/easyrdf package was determined to be used only for testing in core.

Therefore it's moved to the require-dev section in the drupal/core package.

This means it will not be installed by Composer using composer install --no-dev.

Other projects which might have needed easyrdf/easyrdf package and relied on it being installed along with Drupal core should add it as a requirement in their own package.

Learn how to add a composer.json file to your extension here: https://www.drupal.org/docs/8/creating-custom-modules/add-a-composerjson...

Impacts: 
Module developers