Breaking: #83302 - Composer restricts installation of typo3/cms ¶
See Issue #83302
When running a composer-based TYPO3 instance, it is not possible anymore to require the whole
TYPO3 Core via
. This package is solely used for Core-development purposes
from now on.
Instead, all system extensions maintained by the TYPO3 Core Team must be required individually.
composer require typo3/cms-core:^9
composer require typo3/cms-fluid-styled-content:^9
composer require typo3/cms-extbase:^9
composer require typo3/cms-workspaces:^9
composer require typo3/cms-sys-note:^9
For convenience, TYPO3 projects can simply require
to get the main
system extensions that are needed for a running TYPO3 instance, and add custom system extensions
as mentioned above.
Installing or updating the composer package
will show an error for TYPO3 v9.
Affected Installations ¶
Composer-based TYPO3 installations that previously required
in the projects’
file or in any required extension
Extension authors should specifically define their dependencies of system extensions in their
file, if they have previously added
Site administrators / developers should require only the necessary
packages that they
have installed in their projects. In order to find out, which system extensions have been installed,
have a look at
and look for all extensions that are located under