Do not require typo3conf/ext to be writable in Composer Mode
The Folder Structure check of the Install Tool requires
typo3conf/ext to be writable. However, this is not essential for the Composer Mode where this directory is not managed at runtime via Extension Manager but at build time via Composer instead.
Thus this directory should be excluded from the check in Composer Mode.
Updated by Mathias Brodala over 4 years ago
Georg Ringer wrote:
Also non composer sites could be managed by version control and don't need runtime writable extension directories....
True, but that's not something TYPO3 can detect at runtime. In this case you want to have this check for your dev enviroment even though it's not required on production.