I tried to install the latest version of Neos CMS using Composer 2.2.3 and got these warnings
- Installing neos/composer-plugin (2.1.3): Extracting archive
neos/composer-plugin contains a Composer plugin which is currently not in your allow-plugins config. See https://getcomposer.org/allow-plugins
Do you trust "neos/composer-plugin" to execute code and wish to enable it now? (writes "allow-plugins" to composer.json) [y,n,d,?] y
Class Neos\Flow\Composer\InstallerScripts is not autoloadable, can not call post-package-install script
- Installing composer/package-versions-deprecated (1.11.99.4): Extracting archive
composer/package-versions-deprecated contains a Composer plugin which is currently not in your allow-plugins config. See https://getcomposer.org/allow-plugins
Do you trust "composer/package-versions-deprecated" to execute code and wish to enable it now? (writes "allow-plugins" to composer.json) [y,n,d,?] y
Class Neos\Flow\Composer\InstallerScripts is not autoloadable, can not call post-package-install script
The installation completed successfully but it seems these warnings are related to a new security feature of Composer 2.2. Please check.