Important: #104126 - Drop "typo3conf" directory from system status check and backend locking

See forge#104126

Description

The directory typo3conf is no longer needed in Composer Mode. Checking for the existence of this directory is no longer performed in the Environment and Install Tool.

Previously it contained:

  • extensions (which are now Composer packages stored in vendor/),
  • the configuration files (which are now part of the config/ tree)
  • language labels and some artifact states (now part of var/)
  • a "backend lock" file (LOCK_BACKEND)

The location to this file can be adjusted via the new configuration setting $GLOBALS['TYPO3_CONF_VARS']['BE']['lockBackendFile'] . See Feature: #104126 - Add configuration setting to define backend-locking file for details on this setting and location.

By default, LOCK_BACKEND is now located here:

  • var/lock/ for Composer Mode
  • config/ for Legacy Mode