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11.4. Setting Up Mandatory Extensions

In GNOME Shell, you can provide a set of extensions that the user has to use. To do so, install the extensions in the /usr/share/gnome-shell/extensions directory and then lock down the and keys.
Locking down the key ensures that the user cannot use GNOME Shell's integrated debugger and inspector tool (Looking Glass) to disable any mandatory extensions.

Procedure 11.4. Setting up mandatory extensions

  1. Create a local database file for machine-wide settings in /etc/dconf/db/local.d/00-extensions-mandatory:
    # List all mandatory extensions
    enabled-extensions=['', '']
    # Disable access to Looking Glass
    The enabled-extensions key specifies the enabled extensions using the extensions' uuid ( and
    The development-tools key is set to false to disable access to Looking Glass.
  2. Override the user's setting and prevent the user from changing it in /etc/dconf/db/local.d/locks/extensions-mandatory:
    # Lock the list of mandatory extensions and access to Looking Glass
  3. Update the system databases:
    # dconf update
  4. Users must log out and back in again before the system-wide settings take effect.