TYPO3 Core

While testing #52828 I found a strange behaviour that was revealed by the patch.

My Structure inside doc root is as following:

drwxrws--- fileadmin
lrwxrwxrwx index.php -> typo3_src/index.php
lrwxrwxrwx typo3 -> typo3_src/typo3
drwxrws--- typo3conf
lrwxrwxrwx typo3_src -> typo3conf/ext/050_core/typo3_src
drwxrws--- typo3temp
drwxrws--- uploads

This is done to have all files that go into version control inside typo3conf/ext and works fine until the moment. Inside typo3conf/ext/050_core/typo3_src are one or more core directories, the active one is pointed to by the symlink typo3_src.

If I now try to install an extension using the EM, I get a message like this:

The package "aboutmodules" depends on "050_coretypo3_srctypo3sysextcore" which is not present in the system.

The package key looked for but not found reflects the folder structure inside typo3conf/ext.