When removing magento-hackathon/magento-composer-installer, Fatal error Class 'MagentoHackathon\Composer\Helper' not found in /var/www/vendor/ magento-hackathon/magento-composer-installer/src/MagentoHackathon/Composer/ Magento/Plugin.php on line 211 ...
magento2.4 - Plugin magento/inventory-composer-installer could not be initialized - Magento Stack Exchange
php - Why does Composer Install a Different Package? - Stack Overflow
The "magento/magento-composer-installer" plugin was skipped · Issue #31283 · magento/magento2 · GitHub
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