Es ist ein weitere Paket zu installieren:
$ yum search composer
======================================================================== N/S matched: composer =========================================================================
php-composer-installers.noarch : A multi-framework Composer library installer
composer.noarch : Dependency Manager for PHP
php-composer-ca-bundle.noarch : Lets you find a path to the system CA
php-composer-semver.noarch : Semver library that offers utilities, version constraint parsing and validation
php-composer-spdx-licenses.noarch : SPDX licenses list and validation library
php-composer-xdebug-handler.noarch : Restarts a process without Xdebug
python2-fedmsg-atomic-composer.noarch : Composes atomic trees when Fedora repositories are updated